Apparatus for collecting cleaning bodies for tubular heat exchanger

Abstract: An apparatus for collecting cleaning bodies in a tubular heat exchanger is disclosed which rectifies or regulates the deflected flow of the cooling water from the upstream side by a rectifying member (5), and hence it is possible to collect the cleaning bodies without any adhesion and stagnation of the cleaning bodies in the cooling water on collection lattices (2) disposed in a V-shape. It is also possible to trap a large article such as a falling tool between a guide member disposed downstream of the collection lattices and the collection lattices, and to introduce only the cleaning bodies into the guide member. Furthermore, the downstream port of a cleaning body discharge pipe (4) is opened toward the downstream side to thereby prevent the clogging of the port with the foreign matter or the like.

Description: The present invention relates to an apparatus for collecting cleaning bodies from a coding water flow for a tubular heat exchanger comprising the features of the precharacterising part of claim 1. Such an apparatus is, for example, disclosed in EP-A-2 525 490. The JP-A-58-186411 discloses a conventional cleaning body collecting apparatus for a tubular heat exchanger, in which a lower portion of a collection lattice is formed into a collection container, an obliquely extending guide member is provided in the region of an end wall of the collection container, and a width of the guide member is narrower than a distance of side walls of the collection container. In addition, the guide member is directed toward a cleaning member outlet. The cleaning member is separated from cooling water. The JP-U-62-19298 shows an apparatus in which a cleaning body extracting pipe for absorbing, toward the upstream side, the cleaning bodies collected at a downstream end of a lattice is disposed in a space embraced by the collection lattice. With respect to the former prior art apparatus, there is no means for rectifying a deflected flow, from the upstream side, for the inlet side of a cylindrical casing. It would be difficult to stably collect the cleaning bodies since the cleaning bodies would be stuck to or stagnant in the lattice. In addition, when a large amount of foreign matter is temporarily introduced into the apparatus, it is impossible to interrupt the introduction of the foreign matter between the guide member and the side wall of the container. Accordingly, the foreign matter would clag an opening portion of the cleaning body extracting pipe located on the lower side and opened upwardly, so that the collection efficiency of the cleaning bodies would be decreased. The latter conventional apparatus suffers from a problem that it would be difficult to stably collect the cleaning bodies, since the cleaning bodies would be stuck to or stagnant in the lattice due to fact that there is no means for rectifying or regulating the deflected flow at the inlet side of the cylinder with respect to the deflected flow from the upstream side. In addition, when a large amount of foreign matter is temporarily introduced, since there is no means for interrupting the introduction of the foreign matter, the foreign matter or the like would clog the opening portion of the cleaning body extracting pipe located on the upper side and opened downwardly, thus reducing the cleaning body collecting performance. From the FR-A-2 525 490 it is known an apparatus for collecting cleaning bodies in a cooling water flow of a tubular heat exchanger, comprising a V-shaped lattice means for trapping and collecting the cleaning bodies fed in the cooling water flow. The both screen members of said lattice means are pivotally mounted in a cylindrical barrel about horizontally axes. Between the lower straight end portions of said screen members a duct means being fixedly mounted in the barrel having two obliquely side walls for feeding the cleaning bodies through a lower vertical discharge channel to a discharge pipe connected with the lower end of said discharge channel. In parallel to the both side walls of said duct means there are provided in the barrel two guiding members above the side walls at a predetermined distance larger than the diameter of the cleaning members. An object of the present invention is to provide an apparatus for collecting cleaning bodies for a tubular heat exchanger, which is capable of collecting cleaning bodies in a stable manner with a high collection efficiency without any clogging of an opening portion of a cleaning body discharge pipe with foreign matter even if a large amount of foreign matter is introduced into the apparatus. This object is solved according to the invention by the features of claims 1 and 9. The collection lattice means is pivotally provided in the apparatus. The guide means includes a vane fixed so that a central portion located on the most downstream side is fixed to a downstream end portion of the flow rectifying member, its both sides extend obliquely in the upstream direction, and a downstream end of the cleaning body discharge means is opened toward the downstream side at the central portion, and a duct formed substantially in parallel with the vane at an interval relative to the vane, which interval is greater than a diameter of the cleaning bodies but smaller than foreign matter or the like, the duct being provided downstream of the vane. The vane and the duct have an increased width toward the ends thereof. The guide means includes a reverse absorption box fixed to the downstream end portion of the flow rectifying means, made in the form of a box shape opened at the downstream side, with its upstream bottom being located on the most upstream side at the central portion, and with its both sides being slanted obliquely on the downstream side, and a duct formed substantially in parallel with a downstream end face of the reverse absorption box at an interval greater than a diameter of the cleaning body but smaller than a diameter of foreign matter or the like. The guide means includes a water injection pipe opened toward the upstream side between the reverse absorption box and the duct. The reverse absorption box includes a flange fixed to an outer portion of a widthwise downstream end portion of the reverse absorption box with a tip end portion of the flange extending toward the collection lattice means. The guide means includes a flow rectifying plate disposed between the reverse absorption box and the duct for introducing the cleaning bodies into the reverse absorption box. The guide means includes a vane and a duct, the vane being in the form of waves so that downstream end portions of the plurality of cleaning body discharge pipes are located on the downstream side. The duct is in the form of waves so that the position of the duct facing downstream tip opening portion of the plurality of cleaning body discharge pipes is located on the downstream side. In the accompanying drawings: Fig. 1 is a longitudinal sectional view showing one embodiment of the invention; Fig. 2 is a sectional view taken along the line II-II of Fig. 1; Fig. 3 is a sectional view taken along the line III-III of Fig. 1; Fig. 4 is a sectional view taken along the line IV-IV of Fig. 1; Fig. 5 is a partially fragmentary perspective view showing the apparatus of Fig. 1; Fig. 6 is an enlarged perspective view showing a duct used in the apparatus shown in Fig. 1; Fig. 7 is an enlarged perspective view showing a duct in accordance with another embodiment of the invention; Fig. 8 is a longitudinal sectional view showing still another embodiment of the invention; Fig. 9 is a sectional view taken along the line IX-IX of Fig. 8; Fig. 10 is a sectional view taken along the line X-X of Fig. 8; Fig. 11 is a cross-sectional view of the apparatus shown in Fig. 8; Fig. 12 is a longitudinal sectional view showing another embodiment of the invention; Fig. 13 is a sectional view taken along the line XIII-XIII of Fig. 12; Fig. 14 is a sectional view taken along the line XIV-XIV of Fig. 12; Fig. 15 is a sectional view taken along the line XV-XV of Fig. 12; Fig. 16 is a partially fragmentary perspective view showing the apparatus of Fig. 12; Fig. 17 is a longitudinal sectional view showing still another embodiment of the invention; Fig. 18 is a sectional view taken along the line XVIII-XVIII of Fig. 17; Fig. 19 is a sectional view taken along the line XIX-XIX of Fig. 17; Fig. 20 is a cross-sectional view showing the apparatus of Fig. 17; Fig. 21 is a longitudinal sectional view showing still another embodiment of the invention; Fig. 22 is a sectional view taken along the line XXII-XXII of Fig. 21; Fig. 23 is a partially fragmentary perspective view showing the apparatus of Fig. 21; Fig. 24 is a longitudinal sectional view showing yet another embodiment of the invention; Fig. 25 is an illustration of the operation of the apparatus shown in Fig. 24; Fig. 26 is a longitudinal sectional view showing yet another embodiment of the invention; Fig. 27 is an illustration of the operation of the apparatus shown in Fig. 26; Fig. 28 is a graph showing the characteristics of the cleaning body collection limits in accordance with the presence/absence of the flow rectifying member according to the invention; and Fig. 29 is a graph showing the characteristics of the cleaning body collection limits in accordance with a difference in cleaning body discharge methods. One embodiment of the invention will now be described with reference to Figs. 1 through 6. As shown in these figures, a cleaning body collecting apparatus according to the invention mainly includes a cylindrical barrel 1, a collection lattice 2, a cleaning body discharge pipe 4, a rectifying or regulating member 5, a duct 3 and a vane 6 which serve as a guide member. The respective components will be described in detail. A flange 1a of the barrel 1 is connected in unison with a cooling water pipe extending from a condensor (not shown) by a coupling means such as welding. The cleaning body discharge pipe 4 is disposed along an axial line of the barrel 1 and its upstream portion is bent at a right angle with its tip end portion extending outside of the barrel 1. A flange 4a for connection with a recirculation system (not shown) is fixed to the tip end portion of the discharge pipe 4. An opening portion 7 is formed at a downstream tip end portion of the discharge pipe 4 so as to open toward the downstream side at the space defined between the vane 6 and the duct 3. The duct 33 is composed of a pair of duct members as best shown in Fig. 6, each duct member having an L-shape in cross section. A portion, located at the most downstream side, of a central portion of each duct member is disposed to face the downstream opening portion 7 of the cleaning body discharge pipe 4. The duct members extend on both sides obliquely upwardly with its width being increased toward the upper ends, respectively. Since edges of both the duct members are fixed to downstream end portions of the collecting lattices 2 as best shown in Fig. 5. The reason why the width of the duct members of the duct 3 is increased on both sides toward the upper ends is that, since both sides of the duct 3 extend obliquely upwardly, if the width of the duct members of the duct 3 would be kept constant, it would be difficult to readily determine the length of the collection lattices 2 whereby it would be difficult to securely couple the side edges of the duct members of the duct 3 and the downstream end portions of the collection lattices 2 with each other. The flow rectifying or regulating member 5 is disposed along the axial line of the barrel 1 so as to substantially divide the cooling water passage into two halves. Both sides of the rectifying member 5 are fixed to vertical planar plates 10. The rectifying member 5 is fixed at the central portion to the washing material discharge pipe 4. The vane 6 is fixed to the downstream portion of the rectifying member 5, and is extended obliquely upwardly on both sides at the same slant angle as that of the duct 3 so as to keep a space in cooperation with the duct 3, with its width being increased toward the upper end portions. The uppermost ends of the vane 6 are fixed to the vertical planar plates 10. It should be noted that the space has an interval greater than a diameter of cleaning balls S but smaller than a diameter of a relatively large foreign matter such as, for example, falling material from the cooling water discharging pipe. It is also noted that a constant interval is kept between the side edges of the vanes 6 on both sides and the downstream ends of the collection lattices 2. The lattice 2 includes a pair of lattice members each of which has a number of crosspieces arranged at a predetermined interval so as to be perpendicular to the flow direction of the cooling water. The downstream end of each lattice member is fixed to the side edge portions of each duct member of the duct 3 and to face the side edge of the vane 6 at a predetermined interval. When the upstream end portions of the lattice members 2 are located at positions shown in Fig. 2, the lattice members are brought substantially in contact with an inner surface of the barrel 1. A shaft 8 is disposed on each side so that the collection lattice 2 may hold the number of crosspieces in unison. The shaft is rotatably supported to the barrel 1. A handle 9 is fixed to the other end portion of the shaft 8 passing through the barrel 1. The washing ball collection method will be explained. The cooling water into which mixed are cleaning bodies S which have passed through heat transfer tubes of the condensor to complete the cleaning is introduced from the upstream side of the barrel 1 through the cooling water discharging pipe. Then the cleaning bodies S are collided with the collection lattice members 2 which has been swung to the position indicated by the solid lines in Fig. 2 by rotating the handle 9 in advance. The cleaning bodies S fall down by the gravitational force along the slanted crosspieces to the duct 3. Thereafter, the cleaning bodies S are moved between the interval between the duct 3 and the vane 6 along both the slanted surfaces of the duct 3 and reach the most downstream position of the central portion of the duct 3. The cleaning bodies S are absorbed therefrom through the opening portion 7 into the cleaning body discharge pipe 4 and are collected through the cleaning body discharge pipe 4 to a predetermined position. On the other hand, in the case where a large amount foreign matter is introduced into the apparatus from the cooling water discharging pipe, if the size of the foreign matter is larger than the interval between both the ends of the vane 6 and the downstream edges of the collection lattices 2, the foreign matter is to be collected at the space between the vane 6 and the collection lattice member 2 but the cleaning bodies S are only allowed to enter the duct 3 to be collect3d through the cleaning body discharge pipe 4 to a predetermined position. A duct in accordance with another embodiment of the invention will be described with reference to Fig. 7. The duct 3 shown in Fig. 7 has, in cross section, an arcuate shape where its central portion is concave. Thus, the cleaning bodies S may readily be rolled and moved to ensure the collection onto the cleaning body discharge pipe. Still another embodiment of the invention will be described with reference to Figs. 8 through 11. In the embodiment shown in Figs. 8 through 11, since a diameter D₂ of a barrel 31 is large, in the case where it takes the same structure as shown in Figs. 1 through 6, the collection lattices are enlarged and the length of the barrel is increased. Thus, this embodiment is applicable to a compactness of the overall apparatus. As shown in Figs. 8 through 11, a central portion of the barrel 31 is divided into two semi-cylindrical chambers 41 by a partitioning plate 30. A pair of collection lattices 32A and 32B are swingably disposed about a shaft 38 in each chamber 41. The two pairs of the lattices are arranged so as to face each other on both sides of the centerlines M. A flow rectifying or regulating member 35 is provided along each centerline M. Each flow rectifying member 35 is fixed at a central portion to the cleaning body discharge pipe 34. Both sides edge portions of the rectifying member 35 are fixed to a vertical planar plate 40. Vanes 36 are fixed to the downstream end portions of the rectifying plate 35. The vanes 36 are in the form of waves so that the mounting positions of the downstream end opening portions 37 of the cleaning body discharge pipes 34 onto the vanes 36 are located on the downstream side. Both ends of the vanes 36 are fixed to the vertical planar plates 40. On the downstream side, the ducts 33 are arranged so as to have intervals, with the vanes 36, greater than a diameter of the cleaning bodies S but smaller than a diameter of a relatively large foreign matter. The ducts 33 are in the form of waves in parallel with the vanes 36 so that the positions of the ducts 33 facing the downstream end opening portions 37 of the discharge pipes 34 are located on the downstream side. Both side edges of the ducts 33 are fixed to the downstream ends of the collection lattices 32A and 32B. The cleaning body collecting method therefor is the same as that of the embodiment shown in Figs. 1 to 6, and hence the explanation will be omitted herein. Another embodiment of the invention will now be described with reference to Figs. 12 through 16. The embodiment shown in Figs. 12 to 16 is substantially the same as the embodiment shown in Figs. 1 to 6 except for the difference in reverse absorption box 106 and duct 103 which form a guide member. Therefore, the difference will be explained as below. The reverse absorption box 106 is fixed to the downstream side of the rectifying member 105. On the downstream side, there is provided an opening portion 107 facing the duct 103, and on the upstream side, the box 106 is formed into a box shape in cross section with its width being kept constant and with a bottom being fixed to the downstream side of the rectifying member 105. The central portion of the bottom portion is located on the most upstream side for fixing the cleaning body discharge pipe 104 thereto so that its opening portion is directed to the downstream side. Both sides of the bottom portion are slanted obliquely downwardly to assist and guide all the cleaning bodies S, introduced between the duct 103 and the bottom portion and spread in the transverse direction (in Fig. 12), to enter the downstream opening portion 107 of the cleaning body discharge pipe 104. Formed between the lower surface of the reverse absorption box 106 and the duct 103 is an interval which is larger than a diameter of the cleaning bodies S but smaller than a diameter of a relatively large foreign matter introduced, such as, for example, a tool falling apart from the cooling water discharging tube. Further, the space between the side edges of the reverse absorption box 106 and the downstream ends of the collection lattices allows only the cleaning bodies S to pass therethrough. The duct 103 includes a pair of duct elements in the same manner as shown in Fig. 6, with an L-shape in cross section. The respective duct members are arranged so as to face the downstream end opening portion 107 of the reverse absorption box 106 and extend in a horizontal direction with a constant width. The duct members are fixed to the downstream ends of the collection lattices 102. It is also possible o form the duct members of the duct 103 to have an arcuate U-shape in cross section so that the cleaning bodies S may readily be rolled or moved along the arcuate shape to ensure the collection of the cleaning bodies S within the reverse absorption box 106. The method for collecting the bodies will be described. When the cooling water into which mixed are the cleaning bodies S which have passed through the heat transfer tubes of the condensor to perform the washing is introduced from the upstream side of the barrel 101 through the cooling water discharging pipe, the cleaning bodies S are collided with the collection lattices 102 which have been swung to the position indicated by solid lines in Fig. 13 by rotating the handle 109 in advance, and descend along the crosspieces obliquely provided in the lattices to fall on the duct 103. Thereafter, the cleaning bodies S are introduced into the space between the duct 103 and the downstream end portion of the reverse absorption box 106 and sucked into the reverse absorption box 106 through the opening portion 107 to be collected to a predetermined position through the cleaning body discharge pipe 104. In the case where the large amount of foreign matter is temporarily introduced from the cooling water pipe, the foreign matter having a larger size than an interval between the side edges of the reverse absorption box 106 and the downstream edges of the collection lattices 102 is trapped between the reverse absorption box 106 and the collection lattices 102. After the cleaning bodies S are only introduced into the duct 103, the cleaning bodies S are sucked into the reverse absorption box 106 through the opening portion 107 and are collected to the predetermined position through the cleaning body discharge pipe 104. Figs. 17 through 20 show the case where the interior of the barrel 131 is divided into a plurality (two in the drawings) of chambers 141 by a partitioning plate 130 and the cleaning body collection means having the same structure as that shown in Figs. 12 to 16 is provided in each chamber 141 for the same reason as in the embodiment shown in Figs. 8 through 11. Yet another embodiment of the invention will be described with reference to Figs. 21 to 23 in which an water injection pipe 111 is fixed to the barrel 101 and the duct 103 and is opened at its tip end toward the interior of the cleaning body discharge pipe 104. Therefore, according to this embodiment, it is possible to suck the cleaning bodies S, introduced into the reverse absorption box 106, into the cleaning body discharge pipe 104 at a higher speed by the injection water flow from the water injection pipe 111. It should be noted that the injected water used in the water injection pipe 111 may be an injected water branched from a recirculation pump outlet of the cleaning body recirculation line or otherwise may be a pressurized cooling water branched from the cooling water pipe upstream of the barrel 101. A reverse absorption box in accordance with another embodiment of the invention will be described with reference to Figs. 24 and 25. As shown in Fig. 24, the reverse absorption box 106 in accordance with this embodiment has a flange 112 fixed to an outer surface of the downstream ends in the widthwise direction. The flange 112 has end portions extending toward the downstream side of the collection lattices 102. Accordingly, as shown in Fig. 25, the cooling water supplied from the upstream side is switched in eddies by the projection of the flange 112, and the generation of the peeling forcible conviction is accelerated on the downstream side of the flange 112. As a result, the cleaning bodies S are effectively entrained or introduced into the reverse absorption box 106 to thereby further enhance the collection performance. Another embodiment of the invention will be described with reference to Figs. 26 and 27. As shown in Fig. 26, in this embodiment, a planar rectifying plate 113 is provided at the central portion in the widthwise direction between the reverse absorption box 106 and the duct 103 and is fixed at both sides to the vertical plates (not shown). Accordingly, as shown in Fig. 27, the cooling water which has passed from the upstream side through the space between two end faces extending in the widthwise direction of the reverse absorption box 106 and the downstream side of the collection lattices 102 is accelerated in generation of the peeling forcible conviction between the reverse absorption box 106 and the duct 103 by the rectifying plate 113 in the same way as in Fig. 25. As a result, the cleaning bodies S are effectively entrained into the reverse absorption box 106 and are simultaneously sucked up thereinto. It is therefore possible to further enhance the collection property. On the other hand, according to experimental results made by the inventors, comparing a method of sucking the cleaning bodies on the upstream side, i.e., upwardly as in the present invention, with a conventional method of sucking the cleaning bodies on the downstream side, i.e., downwardly, it was found that the upwardly sucking method was superior to the downwardly sucking method in cleaning body collectable range in the relationship of the flow rate ratio (flow rate of the cleaning body discharge pipe/flow rate of the inlet of the barrel) as shown in Fig. 29. In the embodiment shown in Figs. 21 and 22, since the water is injected from the water injection pipe 111 when discharging the cleaning bodies upwardly, due to the effect of the injection water flow, the cleaning bodies S are sucked to the washing material discharge pipe 104 at a higher speed, thereby further enhancing the cleaning body collection performance. As described above, according to the invention, since the flow rectifying member and a guide member for introducing the cleaning bodies to the cleaning body discharge pipe opened at its downstream end on the downstream side are provided at the same time, it is possible to ensure a high cleaning body collection performance. With such structure according to the invention, it is possible to ensure the following effects. According to a first aspect of the invention, since it is possible to rectify or regulate the flow lines of the deflected flow from the upstream side, the cleaning bodies are introduced along the rectified flow lines, whereby it is possible to ensure the higher collection performance (i.e., higher collection efficiency) without any adhesion or stagnation of the washing materials to the collection lattices. Also, even if a large amount of foreign matter is introduced temporarily from the upstream side, since the downward end of the cleaning body discharge pipe is opened toward the downstream side, there is no fear that the pipe would be clogged by the foreign matter. It is therefore possible to suck only the cleaning bodies upwardly into the cleaning body discharge pipe. According to a second aspect of the invention, since the collection lattices are pivotally supported, it is possible to readily clean the collection lattices. According to a third aspect of the invention, the guide member is composed of vanes such that a central portion which is located on the most downward side is fixed to the downstream end of the flow rectifying member, both sides of the vanes extend obliquely on the upstream side and the downstream end of the cleaning body discharge pipe is opened at the central portion toward the downstream side, and a duct which is arranged downstream of the vanes and substantially in parallel with the vanes at an interval greater than a diameter of the cleaning bodies but smaller than a size of relatively larger foreign matter. Accordingly, the foreign matter and the like are trapped between the widthwise end faces of the vanes and the collection lattices and only the cleaning bodies are guided along the slant surface of the duct between the vanes and the duct to the central portion, so that the are introduced into the cleaning body discharge pipe. For this reason, the tip end opening portion of the cleaning body discharge pipe would not be clogged to thereby enhance the collection performance. According to a fourth aspect of the invention, since the widthwise size of the duct is increased toward the ends thereof, it is possible to readily determine the length of the collection lattices. Thus, it is possible to readily fix the downstream edges of the collection lattices and the widthwise end faces of the duct and to readily determine the interval between the widthwise end faces of the duct and the vanes. According to a fifth aspect of the invention, the guide member is composed of a reverse absorption box and a duct, the downstream side of the reverse absorption box is opened downwardly toward the duct, and a predetermined interval is provided between the duct and the reverse absorption box. Thus, the foreign matter or the like may be trapped, and only the cleaning bodies are allowed to enter into the cleaning body discharge pipe with a high efficiency. According to a sixth aspect of the invention, since the water injection pipe opened toward the reverse absorption box is provided between the reverse absorption box and the duct, it is possible to introduce the cleaning bodies into the cleaning body discharge pipe at a higher speed due to the effect of the injection water flow from the injection water pipe, whereby it is possible to further enhance the cleaning body collecting performance. According to a seventh aspect of the invention, a flange having an end extending toward the collection lattice is provided on the outer portion of the downstream widthwise edge of the reverse absorption box, so that the generation of the peeling forcible conviction is accelerated between the reverse absorption box and the duct and the cleaning bodies are effectively sucked and entrained into the reverse absorption box to thereby enhance the cleaning body collecting performance. According to an eighth aspect of the invention, since the flow rectifying or regulating plate for entraining and guiding the cleaning bodies into the box is provided between the reverse absorption box and the duct, it is possible to accelerate the generation of the peeling forcible conviction between the reverse absorption box and the duct to further enhance the cleaning body collecting performance. According to a ninth aspect of the invention, the chamber within the barrel is divided into a plurality of chambers by a partition plate in correspondence with the size of the cooling passage, and the respective divided chambers have the same structure as the first aspect of the invention. Thus, it is possible to miniaturize the apparatus. According to a tenth aspect of the invention, the vanes are made in the form of waves so that the downstream tip ends of the cleaning body discharge pipes are located on the downstream side, whereby it is possible to facilitate the manufacture of the vanes. According to an eleventh aspect of the invention, the duct is in the form of waves so that the position, facing the opening portions of the downstream ends of the cleaning body discharge pipes, of the duct is located on the downstream side. It is thus possible to facilitate the manufacture of the duct.

Claims: Apparatus for collecting and discharging cleaning bodies from a cooling water flow for a tubular heat exchanger, comprising a V-shaped lattice means (2, 32, 102, 132) disposed in a barrel (1) for trapping and collecting the cleaning bodies (S) fed in the cooling water flow, the upstream sides of said lattice means being opened toward the cooling water flow in said barrel (1), discharge means (4, 34, 104, 134) for discharging the trapped cleaning bodies (S) to the outside of the barrel (1), guide means (6, 36, 106, 136) for guiding the cleaning bodies (S) to said discharge means through an interior partitioned from the cooling water flow, duct means (3) disposed on the downstream end of the lattice means (2, 32, 102, 132) at a distance greater than the diameter of the cleaning bodies downstream of the guiding means (6, 36, 106, 136), characterized in that flow rectifying means (5, 35, 105, 135) for dividing the cooling water flow inside the lattice means (2, 32, 102, 132) are provided and fixed with its lower end portion at the guiding means (6, 36, 106, 136) and the discharge means (4, 34, 104, 134) has a downstream directed end portion being opened toward the central portion of the duct means (3) and being fixed to the guide means (6, 36, 106, 136). Apparatus according to claim 1, characterized in that each side of the V-shaped lattice means (2, 32, 102, 132) is pivotally disposed in the barrel (1) and provided with a duct member of the duct means (3), so that said duct member will pivot together with the sides of the lattice means (2, 32, 102, 132). Apparatus according to claim 1 or 2, characterized in that the guide means (6,36,106,136) include vanes (6, 36) disposed diametrically on both sides of the downstream end portion of the discharge means (4) and fixed to a side wall (10) of the barrel (1). Apparatus according to claim 3, characterized in that the vanes (6) and the duct (3) are arranged substantially in parallel to another and have an increased width towards the lateral ends thereof. Apparatus according to claim 1 or 2, characterized in that the guide means (106) includes a reverse absorption box (106, 136) fixed to the downstream end portion of said rectifying means (105) and opened to the downstream side, the upstream bottom of said absorption box (106, 136) being located on the most upstream side at the central portion and the both sides of said absorption box (106, 136) being slanted obliquely on the downstream side, and that the duct (103) is formed substantially in parallel with a downstream end face of said absorption box (106, 136) at an interval greater than the diameter of the cleaning bodies but smaller than a diameter of foreign matter or the like. Apparatus according to claim 5, characterized in that said guide means (106) includes a water injection pipe (111) opened toward the upstream side between the absorption box (106) and the duct (103) (Fig. 21). Apparatus according to claim 5 or 6, characterized in that the absorption box (106) includes a flange (112) fixed to an outer portion of a widthwise downstream end portion of said reverse absorption box with a tip end portion of said flange extending toward the lattice means (102) (Fig. 25). The apparatus according to claim 5, characterized in that the guide means (106) includes a flow rectifying plate (113) disposed between the absorption box (106) and the duct (103) for introducing the cleaning bodies into the absorption box (106) (Fig. 26). Apparatus for collecting and discharging cleaning bodies from a cooling water flow of a tubular heat exchanger, comprising: a collection lattice means (32, 132) disposed in the form of a V-shape with its upstream sides being opened toward a cooling water passage (31, 131), for collecting the washing materials fed in a cooling water; and a discharge means (34, 134) for discharging the cleaning bodies, trapped by said collection lattice means, to an outside of the cooling water passage, characterized by: at least one partitioning plate (30, 130) for partitioning said cooling water passage (31) into a plurality of chambers (41) in conformity with a size of said cooling water passage; said lattice means including a plurality of lattices (32) for collecting the cleaning bodies introduced from the upstream side into the respective chambers (41); a plurality of flow rectifying means (35, 135) for dividing each cooling water passage between the lattice (32) for rectifying a deflected flow from the upstream side; and a guide means (36, 136) fixed to downstream end portions of said plurality of flow rectifying means for guiding the cleaning bodies into said discharge means through a partitioned interior of the cooling water passage, said discharge means including a plurality of cleaning body discharge pipes (34) each being fixed at its downstream end to said guide means (36) and being opened at its tip end opening portion toward the downstream side. Apparatus according to claim 9, characterized in that the guide means (36, 136) includes a vane (36) and a duct (33), said vane (36) being in the form of waves so that downstream end portions of said plurality of discharge pipes (34) are located on the downstream side. Apparatus according to claim 10, characterized in that the duct (33) is in the form of waves so that the position of the duct facing downstream tip opening portion of said plurality of discharge pipes (34) is located on the downstream side.

Inventors: FUJITANI YASUO, ISHIDA KEIZO, KANEKO TOSHIHIKO, KON HIDEKI, MATSUSHIMA TOKUNORI, ODA SHIGEO, OTAKE KATSUMOTO, SASAKI TAKUYA, SATOH HIROSHI, SUMIYA YOSHIO, YANAGIHARA MAKOTO, FUJITANI, YASUO, ISHIDA, KEIZO, KANEKO, TOSHIHIKO, KON, HIDEKI, MATSUSHIMA, TOKUNORI, ODA, SHIGEO, OTAKE, KATSUMOTO, SASAKI, TAKUYA, SATOH, HIROSHI, SUMIYA, YOSHIO, YANAGIHARA, MAKOTO
Applicants: HITACHI LTD, HITACHI MACH & ENG LTD, HITACHI MACHINERY & ENGINEERING, LTD., HITACHI, LTD.
Application year: 1991
Main classification: F28G1
IPC codes: F28G1