Patent Publication Number: US-2023134902-A1

Title: Built-in valve chamber of tank completely covered with soil

Description:
FIELD 
     The present disclosure relates to a field of soil-covered tanks, in particular to a soil completely-covered tank system with a built-in valve chamber 
     BACKGROUND 
     Soil covering storage means that a liquefied petroleum gas at a normal temperature is pressurized and stored in tanks or under the ground and is subjected to reasonable comprehensive backfill, this technology is very suitable for storing a flammable and explosive liquid material and can be used for protecting tank bodies, preventing heat and shock waves generated by combustion and explosion from affecting other tank bodies, effectively reducing risks and ensuring that the tank body is mounted closer to one another, thereby saving the land. At present, a technology for a soil completely-covered tank system with a built-in valve chamber has not been mature. If a tank body is completely covered with soil, layout control on various pipelines connected to the inside or outside of the tank body and cables of electric control devices is required. The pipelines are required to be provided with valves according to a standard. 
     SUMMARY 
     The present disclosure provides a soil completely-covered tank system with a built-in valve chamber If the tank body is covered with soil, various pipelines connected to the inside and outside of the tank body and cables of electric control devices can be accommodated, if an emergency occurs, the pipelines can be more rapidly cut off to the greatest extent via the valve chamber; and the sealing performance of the valve chamber is good, so that various facilities inside the valve chamber can be better protected. The above-mentioned technical problems are solved. 
     A technical solution for solving the above-mentioned technical problems in the present disclosure is that: 
     a built-in valve chamber of a tank completely covered with soil includes a spherical tank body, a valve chamber, and a channel; an exterior of the spherical tank body is completely covered with soil, the spherical tank body is connected to a stand column, the stand column is used for supporting the spherical tank body, and the bottom of the stand column is arranged on a ground foundation, such that a gap is formed between the bottom of the spherical tank body and the ground foundation; the valve chamber is arranged between the spherical tank body and the ground foundation, and the valve chamber is provided with a top opening and a side opening; the top opening of the valve chamber is connected to an outer wall on the bottom of the spherical tank body by means of a first connecting structure, such that the valve chamber supports the bottom of the spherical tank body; and the first connecting structure enables a sealed connection state to be formed between the top opening of the valve chamber and the spherical tank body; and one end of the channel is connected to the side opening of the valve chamber by means of a second connecting structure, the other end of the channel extends outwards to be in communication with the outside of a soil layer, and the second connecting structure enables a sealed connection state to be formed between the side opening of the valve chamber and the channel. 
     In a preferred implementation, the first connecting structure includes a first base plate and a first waterproof layer, the first base plate is arranged between the top opening of the valve chamber and the spherical tank body, and the first waterproof layer is arranged on an outer wall position where the first base plate, the valve chamber and the spherical tank body are connected. 
     By arranging the base plate between the top opening of the valve chamber and the spherical tank body, the situation that the tank body is damaged to even leak when being extruded by the valve chamber to deform due to direct contact with the top of the valve chamber can be avoided. By arranging the first waterproof layer, the situation that a liquid outside the valve chamber enters into the valve chamber via a gap between the tank body and the valve chamber to damage devices therein can be avoided, and liquid accumulation on a junction of the tank body and the valve chamber, which is unfavorable for the tank body, can also be avoided. 
     In a preferred implementation, the second connecting structure includes a second base plate, cement, and the first waterproof layer, the second base plate is arranged between the side opening of the valve chamber and the channel, and the cement is arranged on an end, facing the channel, of the second base plate to reinforce the position of the second base plate; and one end of the first waterproof layer is connected to an outer wall of the spherical tank body, and the other end thereof extends to an outer wall on the top of the channel to perform connection, so that the first base plate and the second base plate are sealed at the same time. 
     By arranging the base plate between the valve chamber and the channel, the situation that direct extrusion occurs between the side wall of the valve chamber and the side wall of the channel to damage the both can be avoided. By arranging the first waterproof layer herein, the situation that the liquid outside the valve chamber enters into the valve chamber and the channel via the gap between the valve chamber and the channel to cause excessively high moisture in internal spaces thereof so as to damage devices therein can be avoided, and meanwhile, the tank body inside the valve chamber can be favorably protected. 
     In a preferred implementation, an outer wall of the channel is provided with a plurality of deformation joints at intervals, and a spacing distance among the deformation joints does not exceed 10 m. 
     In the prevent disclosure, the deformation joints are capable of controlling the generation and development of cracks, avoiding collapse, damage of the tank body and more serious hazards, and are beneficial to the guarantee for the structural firmness and stability of the valve chamber and the channel. 
     In a preferred implementation, a third base plate is arranged in the deformation joints, an inner side, facing the channel, of the deformation joint is provided with the cement for reinforcing the third base plate, an outer side thereof is provided with a second waterproof layer, and an exterior of the second waterproof layer is covered with soil. 
     By arranging the third base plate, the situation that the side wall structure of the channel is damaged by direct mutual extrusion between structures on two sides of the third base plate to lower the supporting strength for covering soil can be avoided. The arrangement of the second waterproof layer is beneficial to the maintenance of a relatively dry state inside the channel and the valve chamber and the avoidance of damage of internal facilities affected with damp and is also beneficial to the prolonging of the service life of the third base plate. 
     In a preferred implementation, all of the first base plate, the second base plate and the third base plate are set as wood fiber plates dipped with emulsified asphalt, the cement is set as polyvinyl chloride cement, and both of the first waterproof layer and the second waterproof layer are set as self-adhesive waterproof rolls. The above-mentioned materials can play a better waterproofing role and is beneficial to the guarantee for the structural safety and stability of the built-in valve chamber. 
     In a preferred implementation, an exterior of the second waterproof layer is provided with a protective layer, and the protective layer includes a top protective layer, a bottom protective layer, and a side protective layer; the top protective layer is arranged on the top of the valve chamber and is made of fine aggregate concrete which is 70 mm thick; the bottom protective layer is arranged on the bottom of the valve chamber and is made of fine aggregate concrete which is 50 mm thick; and the side protective layer is arranged on the side of the valve chamber and is made of a soft protective material. 
     By arranging the above-mentioned protective layers, the second waterproof layer is not in direct contact with the covering soil, which is beneficial to the protection of the second waterproof layer from being damaged, and thus, its waterproof effect can be guaranteed. 
     In a preferred implementation, main bodies of the valve chamber and the channel are made of reinforced concrete. By adopting the above-mentioned structure, the supporting stability of the valve chamber for the tank body is higher, collapse cannot be easily caused, the safety of the tank body can be favorably guaranteed, and greater dangers are avoided. 
     In a preferred implementation, a bedding layer is arranged on the bottoms of the valve chamber and the channel, and the bedding layer is set as plain concrete; and the lower part of the bedding layer is provided with a graded sand and stone layer of which the compaction coefficient is not smaller than 0.96. 
     By adopting the above-mentioned structure, a bottom structure where the tank body is located is more stable and reliable, and the situation that serious deformation occurs on the bottom structure to result in the deflection of the tank body and even trigger the collapse and explosion of the tank body can be avoided. 
     In a preferred implementation, a fireproof door is arranged on a position, close to the side opening of the valve chamber, in the channel, and an anti-theft door is arranged on a position, close to an exit of the channel, in the channel. By arranging the fireproof door, the situation that a fire source outside or inside the door spreads to cause higher loss can be stopped. The arrangement of the anti-theft door is beneficial to the guarantee for the safety of the facilities inside the valve chamber. 
     By adopting the above-mentioned structure, the present disclosure has the beneficial effects that: after the tank body is covered with soil, various pipelines connected to the inside and outside of the tank body and cables of electric control devices can be accommodated, if an emergency occurs, the pipelines can be more rapidly cut off to the greatest extent via the valve chamber; and the sealing performance of the valve chamber is good, so that various facilities inside the valve chamber can be better protected. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings described herein are provided for further understanding of the present disclosure, and constitute one part of the present disclosure. Exemplary embodiments of the present disclosure and their descriptions are intended to explain the present disclosure, rather than to constitute improper limitations on the present disclosure. In the accompanying drawings: 
         FIG.  1    is a schematic view of a sectional structure of the present disclosure; 
         FIG.  2    is a schematic view of a partial vertical-view structure of the present disclosure; 
         FIG.  3    is a partial sectional view of a first connecting structure and a second connecting structure of the present disclosure; and 
         FIG.  4    is a schematic view of a partial structure of a deformation joint of the present disclosure. 
     
    
    
     In the drawings: 
       1 , spherical tank body;  101 , stand column; 
       2 , valve chamber;  201 , first connecting structure;  2011 , first base plate;  2012 , first waterproof layer; 
       3 , channel;  301 , second connecting structure;  302 , second base plate;  303 , deformation joint;  3031 , third base plate;  3032 , cement;  3033 , second waterproof layer; 
       4 , bedding layer;  5 , fireproof door; and  6 , anti-theft door. 
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     In order to describe the overall concept of the present disclosure more clearly, detailed descriptions will be further shown below with reference to the accompanying drawings of the description by way of examples. 
     It needs to be noted that many concrete details are shown in the following descriptions to facilitate the sufficient understanding of the present disclosure, however, the present disclosure can also be implemented in other ways different from the ways described herein, and therefore, the protection scope of the present disclosure is not limited by the specific embodiments disclosed below. 
     As shown in  FIG.  1    to  FIG.  4   , a soil completely-covered tank system with a built-in valve chamber  2  includes a spherical tank body  1 , a valve chamber  2 , and a channel  3 ; an exterior of the spherical tank body  1  is completely covered with soil, the spherical tank body  1  is connected to a stand column  101 , the stand column  101  is used for supporting the spherical tank body  1 , and the bottom of the stand column  101  is arranged on a ground foundation, such that a gap is formed between the bottom of the spherical tank body  1  and the ground foundation; the valve chamber  2  is arranged between the spherical tank body  1  and the ground foundation, and the valve chamber  2  is provided with a top opening and a side opening; the top opening of the valve chamber  2  is connected to the outer wall on the bottom of the spherical tank body  1  by means of a first connecting structure  201 , such that the valve chamber  2  supports the bottom of the spherical tank body  1 ; and the first connecting structure  201  enables a sealed connection state to be formed between the top opening of the valve chamber  2  and the spherical tank body  1 ; and one end of the channel  3  is connected to the side opening of the valve chamber  2  by means of a second connecting structure  301 , the other end of the channel  3  extends outwards to be in communication with an outside of a soil layer, and the second connecting structure enables a sealed connection state to be formed between the side opening of the valve chamber  2  and the channel  3 . 
     In a preferred implementation, the first connecting structure  201  includes a first base plate  2011  and a first waterproof layer  2012 , the first base plate  2011  is arranged between the top opening of the valve chamber  2  and the spherical tank body  1 , and the first waterproof layer  2012  is arranged on an outer wall position where the first base plate  2011 , the valve chamber  2  and the spherical tank body  1  are connected. 
     By arranging the base plate between the top opening of the valve chamber  2  and the spherical tank body  1 , the situation that the tank body is damaged to even leak when being extruded by the valve chamber  2  to deform due to direct contact with the top of the valve chamber  2  can be avoided. By arranging the first waterproof layer  2012 , the situation that a liquid outside the valve chamber  2  enters into the valve chamber  2  via a gap between the tank body and the valve chamber  2  to damage devices therein can be avoided, and liquid accumulation on a junction of the tank body and the valve chamber  2 , which is unfavorable for the tank body, can also be avoided. 
     As shown in  FIG.  1    to  FIG.  3   , the second connecting structure  301  includes a second base plate  302 , cement  3032 , and the first waterproof layer  2012 , the second base plate  302  is arranged between the side opening of the valve chamber  2  and the channel  3 , and the cement  3032  is arranged on an end, facing the channel  3 , of the second base plate  302  to reinforce the position of the second base plate  302 ; and one end of the first waterproof layer  2012  is connected to the outer wall of the spherical tank body  1 , and the other end thereof extends to an outer wall on the top of the channel  3  to perform connection, so that the first base plate  2011  and the second base plate  302  are sealed at the same time. 
     By arranging the base plate between the valve chamber  2  and the channel  3 , the situation that direct extrusion occurs between the side wall of the valve chamber  2  and the side wall of the channel  3  to damage the both can be avoided. By arranging the first waterproof layer  2012  herein, the situation that the liquid outside the valve chamber  2  enters into the valve chamber  2  and the channel  3  via the gap between the valve chamber  2  and the channel  3  to cause excessively high moisture in internal spaces thereof so as to damage devices therein can be avoided, and meanwhile, the tank body inside the valve chamber  2  can be favorably protected. 
     As shown in  FIG.  1    to  FIG.  4   , an outer wall of the channel  3  is provided with a plurality of deformation joints  303  at intervals, and a spacing distance among the deformation joints  303  does not exceed 10 m. 
     In the prevent disclosure, the deformation joints  303  are capable of controlling the generation and development of cracks, avoiding collapse, damage of the tank body and more serious hazards, and are beneficial to the guarantee for the structural firmness and stability of the valve chamber  2  and the channel  3 . 
     Further, a third base plate  3031  is arranged in the deformation joints  303 , an inner side, facing the channel  3 , of the deformation joint  303  is provided with the cement  3032  for reinforcing the third base plate  3031 , an outer side thereof is provided with a second waterproof layer  3033 , and an exterior of the second waterproof layer  3033  is covered with soil. 
     By arranging the third base plate  3031 , the situation that the side wall structure of the channel  3  is damaged by direct mutual extrusion between structures on two sides of the third base plate to lower the supporting strength for covering soil can be avoided. The arrangement of the second waterproof layer  3033  is beneficial to the maintenance of a relatively dry state inside the channel  3  and the valve chamber  2  and the avoidance of damage of internal facilities affected with damp and is also beneficial to the prolonging of the service life of the third base plate  3031 . 
     Further, all of the first base plate  2011 , the second base plate  302  and the third base plate  3031  are set as wood fiber plates dipped with emulsified asphalt, the cement  3032  is set as polyvinyl chloride cement  3032 , and both of the first waterproof layer  2012  and the second waterproof layer  3033  are set as self-adhesive waterproof rolls. The above-mentioned materials can play a better waterproofing role and is beneficial to the guarantee for the structural safety and stability of the built-in valve chamber  2 . 
     Further, an exterior of the second waterproof layer  3033  is provided with a protective layer, and the protective layer includes a top protective layer, a bottom protective layer, and a side protective layer; the top protective layer is arranged on the top of the valve chamber  2  and is made of fine aggregate concrete which is  70  mm thick; the bottom protective layer is arranged on the bottom of the valve chamber  2  and is made of fine aggregate concrete which is  50  mm thick; and the side protective layer is arranged on the side of the valve chamber  2  and is made of a soft protective material. 
     By arranging the above-mentioned protective layers, the second waterproof layer  3033  is not in direct contact with the covering soil, which is beneficial to the protection of the second waterproof layer  3033  from being damaged, and thus, its waterproof effect can be guaranteed. 
     Further, main bodies of the valve chamber  2  and the channel  3  are made of reinforced concrete. By adopting the above-mentioned structure, the supporting stability of the valve chamber  2  for the tank body is higher, collapse cannot be easily caused, the safety of the tank body can be favorably guaranteed, and greater dangers are avoided. 
     In a preferred implementation, a bedding layer  4  is arranged on the bottoms of the valve chamber  2  and the channel  3 , and the bedding layer  4  is set as plain concrete; and the lower part of the bedding layer  4  is provided with a graded sand and stone layer of which the compaction coefficient is not smaller than 0.96. 
     By adopting the above-mentioned structure, a ground foundation where the tank body is located is more stable and reliable, and the situation that serious deformation occurs on the ground foundation to result in the deflection of the tank body and even trigger the collapse and explosion of the tank body can be avoided. 
     In a preferred implementation, a fireproof door  5  is arranged on a position, close to the side opening of the valve chamber  2 , in the channel  3 , and an anti-theft door  6  is arranged on a position, close to an exit of the channel  3 , in the channel  3 . By arranging the fireproof door  5 , the situation that a fire source outside or inside the fireproof door  5  spreads to cause higher loss can be stopped. The arrangement of the anti-theft door  6  is beneficial to the guarantee for the safety of the facilities inside the valve chamber. 
     The technical solutions to be protected in the present disclosure are not limited to the above-mentioned embodiments. It should be indicated that combinations of the technical solution in any one of the embodiments and technical solutions in one or more of other embodiments fall within the protection scope of the present disclosure. Although the present disclosure has been described in detail with generalized descriptions and specific embodiments as above, some modifications or improvements may be made on the basis of the present disclosure, which is apparent for the skilled in the art. Therefore, all of these modifications or improvements made without departing from the spirit of the present disclosure fall within the scope claimed to be protected in the present disclosure.