Abstract:
The present invention provides a compression apparatus capable of improving assembling workability, and the compression apparatus includes: a compressor that compresses a gas; a cooler that cools a gas discharged from the compressor in a compressed state; and a support base that supports the compressor and the cooler, wherein the support base includes a main support base having the compressor disposed thereon and an auxiliary support table connectable to the main support base, and wherein the auxiliary support table includes a base plate supporting the cooler and a plurality of leg portions supporting the base plate and stands by itself by the plurality of leg portions.

Description:
BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The present invention relates to a compression apparatus that compresses a gas. 
     Description of the Related Art 
     As illustrated in FIG. 10, Japanese Patent No. 2585299 discloses a multi-axis centrifugal air compressor 100. In the multi-axis centrifugal air compressor 100, a multi-axis centrifugal compressor body 102 that increases the pressure of air in three stages or four stages and three an coolers 104 that cool the compressed air in the respective pressure stages discharged from the multi-axis centrifugal compressor body 102 are supported by a support base 110. The support base 110 includes a box-shaped compressor base 112 that is widened in the horizontal direction and four skid base leg portions 114 that support the box-shaped compressor base 112 extending downward from four corners of the box-shaped compressor base 112 at a predetermined height position. Then, the multi-axis centrifugal compressor body 102 is disposed on the box-shaped compressor base 112, and three air coolers 104 are disposed below the box-shaped compressor base 112. In this way, the multi axis centrifugal compressor body 102 and three an coolers 104 are disposed at the upper and lower positions with the box-shaped compressor base 112 interposed therebetween. Accordingly, the installation space may be saved. 
     SUMMARY OF THE INVENTION 
     Incidentally, when the number of the compressor bodies increases, the number of the coolers also increases, and hence the entire compression apparatus increases in size. In the configuration of the related art, since the base is provided by assembling iron frames in the installation place or the cooler is disposed on the base, the work load increases. 
     Therefore, the present invention is made in view of the above-described circumstance, and a main object thereof is to improve the assembling workability of a compression apparatus. 
     In order to solve the above-described problems, according to an aspect of the present invention, there is provided a compression apparatus including: a compressor that compresses a gas; a cooler that cools a gas discharged from the compressor in a compressed state; and a support base that supports the compressor and the cooler, wherein the support base includes a main support base having the compressor disposed thereon and an auxiliary support table connectable to the main support base, and wherein the auxiliary support table includes a base plate supporting the cooler and a plurality of leg portions supporting the base plate and stands by itself by the plurality of leg portions. 
     In the present invention, since the auxiliary support table may stand by itself, there is no need to support the auxiliary support table in a work in which the auxiliary support table is connected to the main support base. Further, since the auxiliary support table may stand by itself even in a state where the cooler is attached thereto, the cooler may be easily transported while the cooler is attached thereto. Accordingly, the cooler disposed on the auxiliary support table in a factory or the like may be moved to an installation place, and the auxiliary support table having the cooler disposed thereon may be easily and directly connected to the main support base. As a result, it is possible to improve the assembling workability of the compression apparatus in the installation place. 
     The cooler may be disposed at the lower side of the base plate, and the plurality of leg portions may be disposed so that at least two leg portions are located at both sides of the arrangement position of the cooler with a gap interposed therebetween. 
     In this aspect, the auxiliary support table may stand by itself through a simple configuration in which the base plate is supported by the plurality of leg portions provided at both sides of the arrangement position of the cooler. 
     The auxiliary support table may include a suspending portion that suspends the cooler on the base plate. In this case, the suspending portion may include a variation allowing portion that allows the movement of the cooler from the arrangement position with an expansion of a pipe connecting the compressor and the cooler to each other. 
     According to such a configuration, when the pipe connecting the compressor and the gas cooler to each other is thermally expanded by the high-temperature gas discharged from the compressor, the cooler moves, and hence the stress caused be the thermal expansion may be suppressed. 
     The auxiliary support table may further include a cross beam member that is stretched between the leg portions below the arrangement position of the cooler. In this case, the cross beam member may include a first swing limiting portion that restricts the movement of the cooler in a direction intersecting the cross beam member. 
     According to such a configuration, since the cross beam member is provided, the swing of the cooler in a direction intersecting the cross beam member may be suppressed by using the cross beam member while improving the rigidity of the auxiliary support table. 
     The cross beam member may include a second swing limiting portion that restricts the movement of the cooler in a direction along the cross beam member. 
     According to such a configuration, since the cross beam member is provided, the swing of the cooler in a direction along the cross beam member may be suppressed by using the cross beam member while improving the rigidity of the auxiliary support table. 
     According to another aspect of the present invention, there is provided a cooler unit that includes a compressor compressing a gas and a main support base having the compressor disposed thereon and is connectable to a compression apparatus body the cooler unit including: a cooler that cools the gas discharged from the compressor in a compressed state; and an auxiliary support table that supports the cooler and is connectable to the main support base, wherein the auxiliary support table includes a base plate, a plurality of leg portions that support the base plate, a suspending portion that suspends the cooler on the base plate, a cross beam member that is stretched between the leg portions below the arrangement position of the cooler, and a fixation portion that fixes the cooler suspended on the suspending portion to the cross beam member. 
     In the present invention, since the auxiliary support table may stand by itself, there is no need to support the auxiliary support table in a work in which the auxiliary support table is connected to the main support base. Further, since the auxiliary support table may stand by itself even in a state where the cooler is attached thereto, the cooler may be easily transported while the cooler is attached thereto. Accordingly, the cooler disposed on the auxiliary support table in a factory or the like may be moved to an installation place, and the auxiliary support table having the cooler disposed thereon may be easily and directly connected to the main support base. As a result, it is possible to improve the assembling workability when the compression apparatus is assembled by connecting the cooler unit to the compression apparatus body. 
     The fixation portion may be adapted to release the fixed state of the cooler and may serve as swing limiting portion that restricts the movement of the cooler in a direction intersecting the cross beam member in the released state. 
     According to such a configuration, since the cross beam member is provided, the swing of the cooler in a direction intersecting the cross beam member may be suppressed by using the cross beam member while improving the rigidity of the auxiliary support table. 
     As described above, according to the present invention, the assembling workability of the compression apparatus may be improved. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a front view illustrating a compression apparatus according to this embodiment. 
         FIG. 2  is an enlarged perspective view when obliquely viewed from the upper and rear sides of a first auxiliary support table and a main support base of a support base. 
         FIG. 3  is a perspective view illustrating the first auxiliary support table when obliquely viewed from the upper and rear sides thereof. 
         FIG. 4  is a front view of the first auxiliary support table. 
         FIG. 5  is a cross-sectional view of the rear part of the first auxiliary support table at the position V-V of  FIG. 4 . 
         FIGS. 6A and 6B  are views illustrating a swing limiting portion of a first cross beam member and a peripheral part thereof, where  FIG. 6A  is a partially enlarged front view and  FIG. 6B  is a cross-sectional view taken along the position VIB-VIB of  FIG. 6A . 
         FIGS. 7A and 7B  are views illustrating the swing limiting portion and the peripheral part thereof during the transportation of the first auxiliary support table, where  FIG. 7A  is a partially enlarged front view and  FIG. 7B  is a cross-sectional view taken along the position VIIB-VIIB of  FIG. 7A . 
         FIG. 8  is a schematic perspective view of the auxiliary support table according to the embodiment. 
         FIG. 9  is a view illustrating a longitudinal swing limiting portion according to the embodiment. 
         FIG. 10  is a front view of a multi-axis centrifugal air compressor of the related art. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Hereinafter, an embodiment of the present invention will be described by referring to the accompanying drawings. 
     As illustrated in  FIG. 1 , a compression apparatus  1  of this embodiment includes a compressor  52 , a plurality of coolers  54 A to  54 F, and a support base  10  that supports the compressor  52  and the plurality of coolers  54 A to  54 F on an installation surface G. Furthermore, a pipe between the compressor  52  and the coolers  54 A to  54 F is not illustrated in the drawings. The support base  10  includes a main support base  20 , a first auxiliary support table  30 , and a second auxiliary support table  40 . In the support base  10  of this embodiment, the first auxiliary support table  30  and the second auxiliary support table  40  are disposed at both sides of the main support base  20  with the main support base  20  interposed therebetween in the horizontal direction. 
     The compression apparatus  1  of this embodiment includes six coolers, the first to sixth coolers  54 A to  54 F. In  FIG. 1 , the left upper-stage cooler is set as the first cooler  54 A, the lower-stage coolers are set as the second to fifth coolers  54 B to  54 E in this order from the left side, and the right upper-stage cooler is set as the sixth cooler  54 F. In this embodiment, the main support base  20  and the compressor  52  disposed thereon constitute a main body of the compression apparatus  1 . Further, in the description below, there is a case where the first auxiliary support table  30  on which the second cooler  54 B is disposed is referred to as a first cooler unit and the second auxiliary support table  40  on which the fourth cooler  54 D and the fifth cooler  54 E are disposed are referred to as a second cooler unit. 
     The compressor  52  is a so-called multi-stage compressor that gradually increases the pressure of a gas to a predetermined pressure. As illustrated in  FIG. 2 , the compressor  52  is driven by the rotation power generated from a motor M connected to the compressor  52 . 
     Each of the first to sixth coolers  54 A to  54 F includes a columnar cooler body  540  that extends in the horizontal direction. The first to sixth coolers  54 A to  54 F are respectively disposed on the support base  10  so that the center axes (hereinafter, simply referred to as the “cooler axes”) of the cooler bodies  540  are parallel to one another. Each cooler body  540  cools a gas introduced thereinto and discharges the gas cooled therein. Each of the second to fifth coolers  54 B to  54 E includes a pair of support pieces  543  which is disposed in parallel in a direction perpendicular to the drawing paper of  FIG. 1 . The support pieces  543  are respectively provided at both ends of the cooler body  540  in the cooler axis direction. 
     As illustrated in  FIG. 2 , the main support base  20  includes a main body base plate  21  and a plurality of main body leg portions  22 . The main support base  20  supports the compressor  52  and the third cooler  54 C on the installation surface G. The main support base  20  of this embodiment also supports the motor M as a drive source of the compressor  52 . 
     The main body base plate  21  is a part that includes a placement surface  210  formed at the upper end thereof so as to be widened in the horizontal direction. Specifically, the main body base plate  21  has a rectangular shape in the top view, and is formed so that an iron plate  212  or the like is placed on a frame  211  formed of shaped steel such as channel steel or H-shaped steel. As illustrated in  FIG. 1 , the compressor  52  is placed on the main body base plate  21 , and the third cooler  54 C is disposed below the main body base plate  21 . The third cooler  54 C is suspended from the main body base plate  21  by a swing member  25  extending in the up and down direction. 
     The main body leg portions  22  extend downward from the main body base plate  21 , and support the main body base plate  21  so that the main body base plate  21  is located a predetermined height position on the installation surface G. For example, the main support base  20  of this embodiment includes eight main body leg portions  22  including four main body leg portions  22  disposed at four corners. These eight main body leg portions  22  are disposed so that four main body leg portions are disposed at each of both sides of the main body base plate  21  in the horizontal direction perpendicular to the cooler axis. 
     As illustrated in  FIGS. 1 and 3 , the first auxiliary support table  30  includes a base plate  31 , a plurality of leg portions  32 , a first cooler support portion  36 , and a second cooler support portion (a suspending portion)  37 . The first auxiliary support table  30  supports the first and second coolers  54 A and  54 B while being connected to the main support base  20 . 
     The base plate  31  is a part that includes a placement surface  310  formed at the upper end thereof so as to be widened in the horizontal direction. The base plate  31  has the same configuration as that of the main body base plate  21 . That is, the base plate  31  has a rectangular shape in the top view, and is formed so that an iron plate  312  or the like is placed on a frame  311  formed of shaped steel such as channel steel or H-shaped steel. The first cooler  54 A is placed on the base plate  31 , and the second cooler  54 B is disposed below the base plate  31 . 
     Furthermore, in  FIG. 3 , the iron plate  312  illustrated in  FIG. 2  is omitted so as to illustrate the configuration of the frame  311 . Further, each of the number of the coolers placed on the base plate  31  and the number of the coolers disposed below the base plate  31  may be two or more. Further, the cooler may be disposed at only one of a position on the base plate  31  and a position below the base plate  31 . Further, the base plate  31  may have a shape other than the rectangular shape in the top view. 
     The leg portions  32  extend downward from the base plate  31 , and support the base plate  31  so that the base plate  31  is located at a predetermined height position on the installation surface G. Specifically, the first auxiliary support table  30  includes, for example, four leg portions  32 . Then, the leg portions  32  respectively extend downward from four corners of the base plate  31 , and support the base plate  31  at a height position where the placement surface  310  of the base plate  31  and the placement surface  210  of the main body base plate  21  are flush with each other. In this way, the first auxiliary support table  30  realizes a self-standing configuration by a simple configuration in which the base plate  31  is supported by the plurality of leg portions  32  extending in the up and down direction. 
     As illustrated in  FIG. 4 , the first cooler support portion  36  includes a plurality of first support bodies  360  disposed on the base plate  31 , and supports the first cooler  54 A from the downside by the plurality of first support bodies  360 . The first cooler support portion  36  of this embodiment supports the first cooler  54 A on the placement surface  310  by four first support bodies  360 . Each of the first support bodies  360  includes a spring coil  361  having a posture in which the coil axis faces the up and down direction. Then, the first support bodies  360  support the first cooler  54 A by using the elastic force of the spring coil  361  disposed between the first cooler  54 A and the placement surface  310 . Accordingly, it is possible to absorb the thermal expansion displacement generated in a pipe (not illustrated) between the compressor  52  and the first cooler  54 A caused by the high-temperature gas (the compressed high-temperature gas) discharged from the compressor  52  flowing through the pipe. As a result, it is possible to suppress the generation of stress in a pipe or the like caused by the thermal expansion. The same applies to the sixth cooler  54 F of  FIG. 1 . 
     As illustrated in  FIGS. 4 and 5 , the second cooler support portion  37  includes a plurality of second support bodies  370  each of which includes a suspending portion  371  and a support portion (a variation allowing portion)  373 , and suspends the second cooler  54 B on the first auxiliary support table  30  by the plurality of second support bodies  370  in a swingable manner. In the first auxiliary support table  30  of this embodiment, the second cooler  54 B is suspended on the base plate  314  by the second support bodies  370 . 
     The suspending portion  371  is a member that extends from the support portion  373  disposed in the base plate  31  to the second cooler  54 B disposed below the base plate  31  in the up and down direction. Specifically, the suspending portion  371  includes a flange portion  372  formed at the upper end thereof so as to be widened in the horizontal direction. Then, the upper end (the part provided with the flange portion  372 ) of the suspending portion  371  is supported by the support portion  373  disposed on the placement surface  310 , and the suspending portion  371  is suspended downward so as to pass between a pair of channel steel members  3110  that forms the frame  311  of the base plate  31  from the upper end thereof and is disposed with a gap therebetween in the horizontal direction. The lower end of the suspending portion  371  is connected to the support piece  543  of the second cooler  54 B. The suspending portion  371  of this embodiment is formed of, for example, a steel bar. 
     The support portion  373  includes a spring coil  374  that is disposed on the placement surface  310  of the base plate  31  and has a posture in which the coil axis faces the up and down direction. The spring coil  374  is disposed so as to be interposed between the placement surface  310  and the flange portion  372  while the suspending portion  371  is inserted along the coil axis. Then, the support portion  373  supports the second cooler  54 B by using the elastic force of the spring coil  374 . Accordingly, it is possible to absorb the thermal expansion displacement generated in a pipe (not illustrated) between the compressor  52  and the second cooler  54 B caused by the high-temperature gas (the compressed high-temperature gas) discharged from the compressor  52  flowing through the pipe. As a result, it is possible to suppress the generation of stress in a pipe or the like caused by the thermal expansion. The same applies to the third to fifth coolers  54 C to  54 E. 
     As illustrated in  FIG. 3 , in the first auxiliary support table  30 , a first cross beam member (the cross beam member)  33  and a second cross beam member  34  are attached to the lower portion of the leg portion  32 , and a reinforcement member  35  is attached to the upper portion of the leg portion  32 . Since the first and second cross beam members  33  and  34  and the reinforcement member  35  are provided in the first auxiliary support table  30 , the rigidity of the first auxiliary support table  30  is improved. 
     As illustrated in  FIGS. 3 and 4 , the second cross beam member  34  is stretched between the pair of leg portions  32  extending in the cooler axis direction and disposed in parallel with a gap therebetween in the cooler axis direction. The second cross beam member  34  of this embodiment is formed of, for example, channel steel. 
     Further, as illustrated in  FIG. 3 , the reinforcement member  35  extends in the inclined direction so as to connect the base plate  31  and the leg portion  32  to each other, and is formed of for example, channel steel in this embodiment. 
     As illustrated in  FIGS. 3 to 6B , the first cross beam member  33  includes a cross beam body  331 , a longitudinal swing limiting portion (a first swing limiting portion)  332 , and a pair of lateral swing limiting portions (second swing limiting portions)  333 . The cross beam body  331  extends in the horizontal direction perpendicular to the cooler axis direction at a position below the second cooler  54 B, and is stretched between the pair of leg portions  32  disposed with the second cooler  54 B interposed therebetween. The cross beam body  331  of this embodiment is formed of, for example, H-shaped steel. 
     The longitudinal swing limiting portion  332  is a part that protrudes upward from the cross beam body  331 . The longitudinal swing limiting portion  332  of this embodiment is formed of, for example, the channel steel that is attached to the upper end of the cross beam body  331 . The longitudinal swing limiting portion  332  has a height dimension in which the upper end thereof is located at the upside in relation to the support piece  543  of the second cooler  54 B. That is, when the first auxiliary support table  30  is viewed from the front side thereof while the right side of  FIG. 5  is set as the front side and the left side thereof is set as the rear side, the longitudinal swing limiting portion  332  has a height dimension in which the upper portion thereof overlaps the lower portion of the support piece  543 . Then, the longitudinal swing limiting portion  332  of the front first cross beam member  33  is disposed at the front side of the support piece  543  with a slight gap with respect to the support piece  543  provided at the front portion of the second cooler  54 B in the cooler axis direction. Further, the longitudinal swing limiting portion  332  of the rear first cross beam member  33  is disposed at the rear side of the support piece  543  with a slight gap with respect to the support piece  543  provided at the rear portion of the second cooler  54 B in the cooler axis direction. That is, as illustrated in  FIG. 5 , the pair of longitudinal swing limiting portions  332  and  332  is provided so as to interpose the pair of support pieces  543  and  543 , provided at a gap therebetween in the cooler axis direction, from the outside of the cooler axis direction. 
     Since the longitudinal swing limiting portion  332  is provided in this way, the front or rear support piece  543  comes into contact with the corresponding longitudinal swing limiting portion  332  when the second cooler  54 B swings forward or backward. Since the forward or backward movement of the second cooler  54 B is restricted by the longitudinal swing limiting portion  332 , it is possible to prevent the damage of the connection position between the cooler and the pipe. 
     Furthermore, the specific shape of the longitudinal swing limiting portion  332  is not limited as long as the longitudinal swing limiting portion  332  protrudes upward from the cross beam body  331  so as to come into contact with the support piece  543  of the second cooler  54 B. Further, the longitudinal swing limiting portion  332  may be provided so as to protrude toward the second cooler  54 B in the leg portion  32 . 
     When the first auxiliary support table  30  having the second cooler  54 B disposed thereon, that is, the first cooler unit is transported so that the compression apparatus  1  may be assembled in an installation place, the support piece  543  is fixed to the longitudinal swing limiting portion  332  as illustrated in  FIGS. 7A and 7B . At this time, the support piece  543  and the longitudinal swing limiting portion  332  are connected to each other by a fastening member  66  in a state where a spacer  65  is interposed between the support piece  543  and the longitudinal swing limiting portion  332 . The spacer  65  has a thickness corresponding to the gap between the support piece  543  and the longitudinal swing limiting portion  332 . Accordingly, when the front support piece  543  and the rear support piece  543  of the second gas cooler  54 B are respectively fixed to the corresponding longitudinal swing limiting portions  332 , the second gas cooler  54 B may be fixed without any deviation from a predetermined arrangement position. In this way, since the second cooler  54 B is fixed to the arrangement position in, the first auxiliary support table  30  when the support piece  543  is fixed to the longitudinal swing limiting portion  332 , it is possible to prevent the second cooler  54 B from being dropped from the first auxiliary: support table  30  due to the large movement (swing) of the second cooler  54 B caused by the vibration or the swing in a transportation state. 
     In this way, in the compression apparatus  1  of this embodiment, the longitudinal swing limiting portion  332 , the spacer  65 , and the fastening member  66  constitute a fixation portion that fixes the second cooler  54 B suspended on the base plate  31  to the cross beam body  331  during the transportation of the first cooler unit. 
     As illustrated in  FIGS. 4 to 6A  and  FIG. 7A , the lateral swing limiting portion  333  is a plate-shaped member that is attached to the longitudinal swing limiting portion  332 . The lateral swing limiting portion  333  has a height dimension in which the upper end thereof is located at the upside in relation to the lower end of the support piece  543  of the second cooler  54 B. Further, the lateral swing limiting portion  333  has a thickness dimension in which the lateral swing limiting portion  333  comes into contact with the support piece  543  when the support piece  543  moves in the lateral direction (the right and left direction of  FIG. 4 ). The pair of lateral swing limiting portions  333  and  333  attached to the front longitudinal swing limiting portion  332  is disposed at both sides of the support piece  543  with a slight gap with respect to the support piece  543  provided at the front portion of the second cooler  54 B in the horizontal direction perpendicular to the cooler axis. In the same way, the pair of lateral swing limiting portions  333  and  333  attached to the rear longitudinal swing limiting portion  332  is disposed at both sides of the support piece  543  with a slight gap with respect to the support piece  543  provided at the rear portion of the second cooler  54 B in the horizontal direction perpendicular to the cooler axis. That is, in the longitudinal swing limiting portions  332 , the pair of longitudinal swing limiting portions  333  and  333  is disposed so as to interpose the support piece  543  from the outside in the horizontal direction perpendicular to the cooler axis. 
     Since the lateral swing limiting portion  333  is provided in this way, the support piece  543  comes into contact with the corresponding lateral swing limiting portion  333  when the second cooler  54 B swings in the lateral direction. Accordingly, since the lateral movement of the second cooler  54 B is restricted by the lateral swing limiting portion  333 , it is possible to prevent the damage of the connection position between the cooler and the pipe. 
     The first auxiliary support table  30  with the above-described configuration is connected to the main support base  20  in a manner such that the end of the base plate  31  and the end of the main body base plate  21  are separably connected to each other by a fastening member such as a bolt. 
     As illustrated in  FIG. 1 , the second auxiliary support table  40  has substantially the same configuration as that of the first auxiliary support table  30 . That is, the second auxiliary support table  40  includes the base plate  31 , the plurality of leg portions  32 , the first cooler support portion  36 , and the second cooler support portion (the suspending portion)  37 . Further, even in the second auxiliary support table  40 , the first cross beam member (the cross beam member)  33  that includes the cross beam body  331 , the longitudinal swing limiting portion  332 , and the lateral swing limiting portion  333  having a configuration of  FIG. 6  and the second cross beam member  34  are attached to the lower portion of the leg portion  32 , and the reinforcement member is attached to the upper portion of the leg portion  32 . Furthermore, in the second auxiliary support table  40 , the same reference numerals will be given to the same components as those of the first auxiliary support table  30 , and the detailed description thereof will not be repeated. 
     In the second auxiliary support table  40 , the sixth cooler  54 F is placed on the base plate  31 , and the fourth and fifth coolers  54 D and  54 E are disposed below the base plate  31 . The sixth cooler  54 F is supported on the base plate  31  of the second auxiliary support table  40  by the first cooler support portion  36 . Further, the fourth cooler  54 D and the fifth cooler  54 E are respectively suspended on the base plate  31  of the second auxiliary support table  40  by the second cooler support portion  37 . 
     In the fourth and fifth coolers  54 D and  54 E, the support piece  543  is bonded to the upper side of the cooler body  540 . Further, in the fourth and fifth coolers  54 D and  54 E, a plate-shaped contact piece  545  that extends downward from the cooler body  540  and is widened in a direction perpendicular to the cooler axis is bonded to a position located below the cooler body  540  and corresponding to each longitudinal swing limiting portion  332 . As in the case of the support piece  543  of the second cooler  54 B, the contact piece  545  has a configuration in which the front or rear contact piece  545  comes into contact with the corresponding longitudinal swing limiting portion  332  so as to restrict the further movement of the fourth and fifth coolers  54 D and  54 E when the fourth and fifth coolers  54 D and  54 E swing forward or backward. 
     Furthermore, in the second auxiliary support table  40 , since two coolers (the fourth cooler  54 D and the fifth cooler  54 E) are disposed below the base plate  31 , two longitudinal swing limiting portions  332  are provided at the positions corresponding to the coolers  54 D and  54 E of each cross beam body  331 . 
     According to the above-described compression apparatus  1 , in the first or second auxiliary support table  30  or  40 , the plurality of leg portions  32  are disposed at both sides of the arrangement position of the second cooler  54 B or the fourth and fifth coolers  54 D and  54 E so as to interpose the arrangement position in the horizontal direction, so that the first and second auxiliary support tables  30  and  40  may stand by itself. For this reason, there is no need to support the first and second auxiliary support tables  30  and  40  in the work in which the first and second auxiliary support tables  30  and  40  are connected to the main support base  20 . Further, since it is possible to transport the first and second auxiliary support tables  30  and  40  having the second cooler  54 B or the fourth and fifth coolers  54 D and  54 E attached thereto, that is, the first and second cooler units, the second cooler  54 B or the fourth and fifth coolers  54 D and  54 E may be moved to the installation place while being disposed on the first and second auxiliary support tables  30  and  40  in a factory or the like, and the first and second cooler units may be directly connected to the main support base  20  and the compressor  52 , that is, the main body of the compression apparatus  1 . As a result, the assembling workability of the compression apparatus  1  is improved. 
     In the first and second auxiliary support tables  30  and  40 , the first cooler support portion  36  and the second cooler support portion  37  support the first, second, and fourth to sixth coolers  54 A,  54 B, and  54 D to  54 F so as to allow the movement from the arrangement position thereof caused by the thermal expansion of the pipe connecting the first, second, and fourth to sixth coolers  54 A,  54 B, and  54 D to  54 F to the compressor  52 . For this reason, when the pipe or the like is thermally expanded by the high-temperature gas discharged from the compressor  52 , the coolers  54 A,  54 B,  54 D to  54 F move from the arrangement position thereof, so that the stress caused by the thermal expansion may be suppressed. 
     Furthermore, the compression apparatus and the cooler unit of the present invention are not limited to the above-described embodiment, and may be, of course, modified into various forms without departing from the spirit of the present invention. 
     The number of the auxiliary support tables disposed on the support base  10  may be one or three or more. 
     As illustrated in  FIG. 8 , the leg portion  32 A of the auxiliary support table  30 A may have, for example, a plate shape or the like other than the shape extending in the up and down direction. 
     The longitudinal swing limiting portion  332  of the above-described embodiment is provided so as to protrude upward from the first cross beam member  331 , but is not limited to this configuration. For example, as illustrated in  FIG. 9 , the longitudinal swing limiting portion  332 A may protrude in the horizontal direction from the height position corresponding to the support piece  543  of the cooler  54  in the leg portion  32 . 
     Further, in the first and second auxiliary support tables  30  and  40 , the second, fourth, and fifth coolers  54 B,  54 D, and  54 E disposed below the base plate  31  may be supported by the first cooler support portion  36  on the first cross beam member  331  or the like. 
     In the first and second auxiliary support tables  30  and  40 , the first cross beam member  33 , the second cross beam member  34 , and the reinforcement member  35  may not be essentially provided as long as strength is ensured. Further, the first and second auxiliary support tables  30  and  40  may be provided with one or two members among three members, that is, the first cross beam member  33 , the second cross beam member  34 , and the reinforcement member  35 .