Oil storage tank sealing performance test device

Abstract

The present invention relates to the technical field of oil storage tanks, and discloses an airtightness test device for an oil storage tank, which includes a box body. Two support frames are arranged on the bottom surface of the box body, and the oil storage tank is placed on the two support frames. A first telescopic cylinder is connected to the right inner wall of the box body, and a pressing plate is connected to the telescopic end of the first telescopic cylinder; an end sealing mechanism is arranged on the left side wall of the box body; an air inflation mechanism is arranged in the end sealing mechanism; side sealing mechanisms are arranged on the front and rear inner walls of the box body, and the side sealing mechanisms are connected with a driving mechanism; a water conveying mechanism is connected to the front side wall of the box body. The airtightness test device for an oil storage tank is provided to overcome the defects that in the existing airtightness test experiment, the port diameters of different oil storage tanks are different, different sealing heads need to be replaced for testing different oil storage tanks, which is very troublesome and the detection efficiency is not high.

Description

Technical Field

[0001] The present invention relates to the field of oil storage tanks, specifically to a sealing test device for oil storage tanks. Background Art

[0002] An oil storage tank is a container for storing oil products. It is the main facility of an oil depot. In pipeline transportation, it is the oil source interface of the oil pipeline. It can be divided into two categories: non-metallic oil tanks and metallic oil tanks according to the material. Metallic oil tanks can be further divided into three types according to the shape: vertical cylindrical, horizontal cylindrical and spherical. Metallic oil tanks are widely used because of their low cost, low leakage rate, convenient construction and easy maintenance. Existing oil tanks need to be tested for sealing performance using equipment before leaving the factory to check their sealing performance. However, the port diameters of different oil storage tanks are different, and different sealing heads need to be replaced to test different oil storage tanks, which is very troublesome and the detection efficiency is not high. Therefore, an oil storage tank sealing test device is proposed for the above problems. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects of the existing sealing test, where the port diameters of different oil storage tanks are different, different sealing heads need to be replaced to test different oil storage tanks, which is very troublesome and the detection efficiency is not high, and to provide an oil storage tank sealing test device.

[0004] The technical solution to achieve the above purpose is: an oil storage tank sealing test device, including a box body. Two support frames are arranged on the bottom surface of the box body, and the oil storage tank is placed on the two support frames. A first telescopic cylinder is connected to the right inner wall of the box body, and the telescopic end of the first telescopic cylinder is connected to a pressing plate; a head sealing mechanism is arranged on the left side wall of the box body; an inflation mechanism is arranged inside the head sealing mechanism; side sealing mechanisms are arranged on the front and rear inner walls of the box body, and the side sealing mechanisms are connected to a driving mechanism; a water delivery mechanism is connected to the front side wall of the box body.

[0005] Preferably, the head sealing mechanism includes a first sealing ring. A first sealing ring is connected to the side of the first sealing ring close to the oil storage tank. Four first connecting columns are connected to the edge of the side of the first sealing ring away from the oil storage tank. The left ends of the four first connecting columns pass through the left side wall of the box body and are connected to an iron ring; a first groove is formed on the left side wall of the box body, a first electromagnet is arranged in the first groove, and four first springs are further connected in the first groove. The other ends of the four first springs are connected to the side wall of the iron ring;

[0006] Four sliding grooves are equidistantly formed in the outer sidewall of the first sealing ring, and four sliding blocks are connected to the inner wall of the second sealing ring. The four sliding blocks are slidably connected in the four sliding grooves. A second sealing ring is connected to the side of the second sealing ring close to the oil storage bin; four second connecting columns are connected to the edge of the side of the second sealing ring away from the oil storage bin. The left ends of the four second connecting columns pass through the left sidewall of the box body and are connected to a second electromagnet. A second groove is formed in the left sidewall of the box body, a third electromagnet is arranged in the second groove, and a limiting component is arranged in the sliding groove.

[0007] Preferably, the limiting component includes three counterbores. The three counterbores are formed in the bottom of the sliding groove. A second spring is arranged in each counterbore, and a first ball is arranged at the upper end of the second spring; three semi-circular limiting holes are formed in the lower end surface of the sliding block, and a sliding groove is formed between the four semi-circular limiting holes.

[0008] Preferably, the inflation mechanism includes an air pump. The air pump is connected with an air delivery pipe. The air delivery pipe passes through the left sidewall of the box body and is connected to a through hole formed in the middle of the first sealing ring.

[0009] Preferably, the side sealing mechanism includes a semi-circular support. A connecting block is connected to each end of the semi-circular support. A screw nut is connected to each of the two connecting blocks; a break is formed in the middle of the semi-circular support. Semi-circular sliding grooves are formed in the semi-circular support on both sides of the break, and semi-circular limiting grooves are formed on both sides of the semi-circular sliding grooves; a fixed support is connected to the second telescopic cylinder. Two second balls are connected to the fixed support. The two second balls are respectively slidably connected in the two semi-circular sliding grooves. The telescopic end of the second telescopic cylinder is connected to a side sealing head.

[0010] Preferably, the driving mechanism includes two driving motors. A placement groove is formed in each of the front and rear inner walls of the box body. A lead screw is movably connected in each of the two placement grooves. The right ends of the two lead screws pass through the box body and are respectively connected to a driving motor. The two screw nuts are respectively connected to the corresponding lead screws.

[0011] Preferably, the water delivery mechanism includes a water tank and a water pump. The water tank and the water pump are arranged on the front sidewall of the box body. The water pump is connected with a pipeline. One end of the pipeline is connected to the water tank, and the other end is connected to the box body.

[0012] The beneficial effects of the present invention are as follows: By providing the first sealing ring, the second sealing ring, the third electromagnet, the second electromagnet, the second connecting column, the first connecting column, the first spring, the first electromagnet and the iron ring, a suitable sealing ring can be selected for oil storage bins with different port diameters, which is convenient to adjust, avoids wasting time by frequently replacing the sealing ring, and improves efficiency. Description of the Drawings

[0013] Figure 1 is the front view of the present invention;

[0014] Figure 2 is the rear view of the present invention;

[0015] Figure 3 is the sectional view of the present invention;

[0016] Figure 4 is the detailed view of the driving mechanism of the present invention;

[0017] Figure 5 is the detailed view of the side plugging mechanism of the present invention;

[0018] Figure 6 is the detailed view of the connection of the second telescopic cylinder of the present invention;

[0019] Figure 7 is Figure 3 the enlarged view at position A in

[0020] Figure 8 is Figure 3 the enlarged view at position B in

[0021] Figure 9 is Figure 8 the enlarged view at position C in

[0022] In the figure: 1. box body; 2. support frame; 3. oil storage tank; 4. first telescopic cylinder; 5. counterweight plate; 6. first sealing ring; 7. first sealing ring; 8. first connecting column; 9. iron ring; 10. first groove; 11. first electromagnet; 12. first spring; 13. second sealing ring; 14. slider; 15. sliding groove; 16. second sealing ring; 17. second connecting column; 18. second groove; 19. third electromagnet; 20. second electromagnet; 21. counterbore; 22. second spring; 23. semi-circular limiting hole; 24. first ball; 25. sliding slot; 26. air pump; 27. air pipe; 28. through hole; 29. semi-circular support; 30. connecting block; 31. break; 32. semi-circular sliding groove; 33. semi-circular limiting groove; 34. second telescopic cylinder; 35. side plugging head; 36. fixed support; 37. second ball; 38. lead screw nut; 39. placement groove; 40. lead screw; 41. driving motor; 42. water tank; 43. water pump; 44. pipeline. Detailed implementation manner

[0023] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] As Figures 1-9 shown, the oil storage tank sealing performance test device includes a box body 1. Two support frames 2 are provided on the bottom surface of the box body 1. The oil storage tank 3 is placed on the two support frames 2. A first telescopic cylinder 4 is connected to the right inner wall of the box body 1, and a pressing plate 5 is connected to the telescopic end of the first telescopic cylinder 4; a head sealing mechanism is provided on the left side wall of the box body 1; an inflation mechanism is provided inside the head sealing mechanism; side sealing mechanisms are provided on the front and rear inner walls of the box body 1, and the side sealing mechanisms are connected to a driving mechanism; a water supply mechanism is connected to the front side wall of the box body 1. The oil storage tank 3 is hoisted onto the support frames 2, and then the first telescopic cylinder 4 and the head sealing mechanism are started. The side sealing mechanisms can seal the openings on the side wall of the oil storage tank 3. Then, the water supply mechanism is started to fill the box body 1 with water. Then, the inflation mechanism is started to inflate the oil storage tank 3. After the inflation is completed, observe whether there are bubbles on the water surface and the outer surface of the oil storage tank 3. If there are bubbles, it means that there is a problem with the sealing performance of the oil storage tank 3.

[0026] Specifically, the end plugging mechanism includes a first plugging ring 6. A first sealing ring 7 is connected to the side of the first plugging ring 6 close to the oil storage tank 3. Four first connecting columns 8 are connected to the edge of the side of the first plugging ring 6 away from the oil storage tank 3. The left ends of the four first connecting columns 8 pass through the left side wall of the box body 1 and are connected to an iron ring 9. A first groove 10 is formed in the left side wall of the box body 1. A first electromagnet 11 is arranged in the first groove 10. Four first springs 12 are also connected in the first groove 10. The other ends of the four first springs 12 are connected to the side wall of the iron ring 9. Four sliding grooves 15 are equidistantly formed in the outer side wall of the first plugging ring 6. Four sliding blocks 14 are connected to the inner wall of the second plugging ring 13. The four sliding blocks 14 are slidably connected in the four sliding grooves 15. A second sealing ring 16 is connected to the side of the second plugging ring 13 close to the oil storage tank 3. Four second connecting columns 17 are connected to the edge of the side of the second plugging ring 13 away from the oil storage tank 3. The left ends of the four second connecting columns 17 pass through the left side wall of the box body 1 and are connected to a second electromagnet 20. A second groove 18 is formed in the left side wall of the box body 1. A third electromagnet 19 is arranged in the second groove 18. A limiting component is arranged in the sliding groove 15. The limiting component includes three counterbores 21. Three counterbores 21 are formed at the bottom of the sliding groove 15. A second spring 22 is arranged in each counterbore 21. A first ball 24 is arranged at the upper end of the second spring 22. Three semi-circular limiting holes 23 are formed in the lower end surface of the sliding block 14. A sliding groove 25 is formed between the four semi-circular limiting holes 23.

[0027] When plugging the port of the oil storage tank 3, the first electromagnet 11 is energized. After the first electromagnet 11 is energized, it generates a magnetic force to attract the iron ring 9. The iron ring 9 contacts the first electromagnet 11 and then drives the first plugging ring 6 to plug the port of the oil storage tank 3. After the sealing experiment is completed, the first electromagnet 11 is powered off. The first electromagnet 11 loses its suction force on the iron ring 9. The four first springs 12 reset and push the iron ring 9 away, so that the first plugging ring 6 leaves the port of the oil storage tank 3.

[0028] For oil storage tanks 3 with different port diameters, it can be selected whether to use the second plugging ring 13.

[0029] When the second plugging ring 13 is not needed, the third electromagnet 19 and the second electromagnet 20 are energized to make the third electromagnet 19 and the second electromagnet 20 repel each other. The third electromagnet 19 pushes the second electromagnet 20, so that the second electromagnet 20 drives the second plugging ring 13 to move leftward through the second connecting column 17, making the right end face of the second plugging ring 13 not flush with the right end face of the first plugging ring 6. Only the first plugging ring 6 is used. After the second plugging ring 13 moves leftward, the three first balls 24 are not exactly located in the three semi-circular limiting holes 23. At this time, the third electromagnet 19 and the second electromagnet 20 are powered off, so that the third electromagnet 19 and the second electromagnet 20 neither attract nor repel each other. Only the first electromagnet 11 is used to drive the iron ring 9 to move so that the first plugging ring 6 plugs the port of the oil storage tank 3.

[0030] When the second sealing ring 13 needs to be used, the third electromagnet 19 and the second electromagnet 20 are energized, so that the third electromagnet 19 and the second electromagnet 20 attract each other. The contact between the third electromagnet 19 and the second electromagnet 20 causes the second connecting column 17 to drive the second sealing ring 13 to move to the right, making the right end face of the second sealing ring 13 flush with the right end face of the first sealing ring 6. At this time, the three first balls 24 are exactly located in the three semi-circular limiting holes 23. The second spring 22 has an upward force, making the three first balls 24 press tightly against the slider 14, which can limit the second sealing ring 13 and prevent the second sealing ring 13 from sliding when the second sealing ring 13 seals the port of the oil storage chamber 3. After the right end face of the second sealing ring 13 is flush with the right end face of the first sealing ring 6, the third electromagnet 19 and the second electromagnet 20 are powered off, so that the third electromagnet 19 and the second electromagnet 20 neither attract nor repel each other. Only the first electromagnet 11 is used to drive the iron ring 9 to move, so that the first sealing ring 6 moves and then drives the second sealing ring 13 to seal the port of the oil storage chamber 3.

[0031] Specifically, the driving mechanism includes two driving motors 41. A placement groove 39 is formed in each of the front and rear inner walls of the box body 1. A lead screw 40 is movably connected in each of the two placement grooves 39. The right ends of the two lead screws 40 pass through the box body 1 and are respectively connected to a driving motor 41. Two lead screw nuts 38 are respectively connected to the corresponding lead screws 40. The side sealing mechanism includes a semi-circular bracket 29. A connecting block 30 is connected to each end of the semi-circular bracket 29. Each of the two connecting blocks 30 is connected to a lead screw nut 38; a break 31 is formed in the middle of the semi-circular bracket 29. Semi-circular sliding grooves 32 are formed in the semi-circular bracket 29 on both sides of the break 31. Semi-circular limiting grooves 33 are formed on both sides of the semi-circular sliding grooves 32; a fixed bracket 36 is connected to the second telescopic cylinder 34. Two second balls 37 are connected to the fixed bracket 36. The two second balls 37 are respectively slidably connected in the two semi-circular sliding grooves 32. The telescopic end of the second telescopic cylinder 34 is connected to the side sealing head 35.

[0032] For an oil storage chamber 3 with holes on some side walls, the side sealing mechanism can be used for sealing. Start the two driving motors 41. The rotation of the driving motors 41 drives the lead screws 40 to rotate. The rotation of the lead screws 40 drives the lead screw nuts 38 to move left and right above the lead screws 40, thereby making the semi-circular bracket 29 move. After the semi-circular bracket 29 moves to a suitable position, the second telescopic cylinder 34 is pushed to slide in the semi-circular bracket 29. After the position is appropriate, start the second telescopic cylinder 34. The second telescopic cylinder 34 extends to make the side sealing head 35 seal the holes on the side wall of the oil storage chamber 3.

[0033] Specifically, the water delivery mechanism includes a water tank 42 and a water pump 43. The front side wall of the box body 1 is provided with the water tank 42 and the water pump 43. The water pump 43 is connected to a pipeline 44. One end of the pipeline 44 is connected to the water tank 42, and the other end is connected to the box body 1. After the end sealing mechanism and the side sealing mechanism complete the sealing of the ports and side holes of the oil storage bin 3, then start the water pump 43, so that the water pump 43 pumps the water in the water tank 42 into the box body 1. The water completely submerges the oil storage bin 3, and then start the inflation mechanism to inflate the oil storage bin 3. After the inflation is completed, observe whether there are bubbles on the water surface and the outer surface of the oil storage bin 3. If there are bubbles, it means that there is a problem with the sealing performance of the oil storage bin 3. After the detection is completed, the water pump 43 pumps the water in the box body 1 back into the water tank 42, thus achieving the recycling of water.

[0034] Specifically, the inflation mechanism includes an air pump 26. The air pump 26 is connected to an air delivery pipe 27. The air delivery pipe 27 passes through the left side wall of the box body 1 and is connected to a through hole 28 opened in the middle of the first sealing ring 6. When the water pump 43 pumps the water in the water tank 42 into the box body 1 and the water completely submerges the oil storage bin 3, the air pump 26 inflates the inside of the oil storage bin 3 through the air delivery pipe 27 to detect the sealing performance of the oil storage bin 3. After the inflation is completed, observe whether there are bubbles on the water surface and the outer surface of the oil storage bin 3. If there are bubbles, it means that there is a problem with the sealing performance of the oil storage bin 3.

[0035] Working principle: Lift the oil storage bin 3 onto the support frame 2, and then start the first telescopic cylinder 4 and the end sealing mechanism. When sealing the port of the oil storage bin 3, energize the first electromagnet 11. After the first electromagnet 11 is energized, it generates a magnetic force to attract the iron ring 9. The iron ring 9 contacts the first electromagnet 11 and then drives the first sealing ring 6 to seal the port of the oil storage bin 3. After the sealing experiment is completed, de-energize the first electromagnet 11. The first electromagnet 11 loses its attraction to the iron ring 9, and the four first springs 12 reset to push the iron ring 9 away, so that the first sealing ring 6 leaves the port of the oil storage bin 3;

[0036] When the second sealing ring 13 is not needed, energize the third electromagnet 19 and the second electromagnet 20, so that the third electromagnet 19 and the second electromagnet 20 repel each other. The third electromagnet 19 pushes the second electromagnet 20, so that the second electromagnet 20 drives the second sealing ring 13 to move to the left through the second connecting column 17, so that the right end face of the second sealing ring 13 is not flush with the right end face of the first sealing ring 6, and only the first sealing ring 6 is used. After the second sealing ring 13 moves to the left, the three first balls 24 are not exactly located in the three semi-circular limiting holes 23; at this time, de-energize the third electromagnet 19 and the second electromagnet 20, so that the third electromagnet 19 and the second electromagnet 20 neither attract nor repel each other, and only use the first electromagnet 11 to drive the iron ring 9 to move so that the first sealing ring 6 seals the port of the oil storage bin 3;

[0037] When the second sealing ring 13 needs to be used, the third electromagnet 19 and the second electromagnet 20 are energized, so that the third electromagnet 19 and the second electromagnet 20 attract each other. The third electromagnet 19 and the second electromagnet 20 come into contact, causing the second connecting column 17 to drive the second sealing ring 13 to move to the right, making the right end face of the second sealing ring 13 flush with the right end face of the first sealing ring 6. At this time, the three first balls 24 are exactly located in the three semi-circular limiting holes 23. The second spring 22 has an upward force, causing the three first balls 24 to press tightly against the slider 14, which can limit the second sealing ring 13 and prevent the second sealing ring 13 from sliding when the second sealing ring 13 seals the port of the oil storage chamber 3. After the right end face of the second sealing ring 13 is flush with the right end face of the first sealing ring 6, the third electromagnet 19 and the second electromagnet 20 are de-energized, so that the third electromagnet 19 and the second electromagnet 20 neither attract nor repel each other. Only the first electromagnet 11 is used to drive the iron ring 9 to move, causing the first sealing ring 6 to move and then driving the second sealing ring 13 to seal the port of the oil storage chamber 3.

[0038] For some oil storage chambers 3 with holes opened on the side walls, the side sealing mechanism can be used for sealing. Start the two driving motors 41. The driving motors 41 rotate to drive the lead screws 40 to rotate. The lead screws 40 rotate to drive the lead screw nuts 38 to move left and right above the lead screws 40, and then the semi-circular brackets 29 move. After the semi-circular brackets 29 move to the appropriate positions, the second telescopic cylinder 34 is pushed to slide in the semi-circular brackets 29. After the positions are appropriate, start the second telescopic cylinder 34. The second telescopic cylinder 34 extends to make the side sealing head 35 seal the holes on the side walls of the oil storage chamber 3.

[0039] Start the water pump 43, so that the water pump 43 pumps the water in the water tank 42 into the box body 1, and the water completely submerges the oil storage chamber 3. The air pump 26 inflates the inside of the oil storage chamber 3 through the air pipe 27 to detect the sealing performance of the oil storage chamber 3. After the inflation is completed, observe whether there are bubbles on the water surface and the outer surface of the oil storage chamber 3. If there are bubbles, it means that there is a problem with the sealing performance of the oil storage chamber 3.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil storage tank sealing performance test device, characterized in that, It includes a box body (1). Two support frames (2) are provided on the bottom surface of the box body (1). An oil storage tank (3) is placed on the two support frames (2). A first telescopic cylinder (4) is connected to the right inner wall of the box body (1), and a pressing plate (5) is connected to the telescopic end of the first telescopic cylinder (4); A head sealing mechanism is provided on the left side wall of the box body (1); An inflation mechanism is arranged in the head sealing mechanism; Side sealing mechanisms are arranged on the front and rear inner walls of the box body (1), and the side sealing mechanisms are connected to a driving mechanism; A water conveying mechanism is connected to the front side wall of the box body (1). The head sealing mechanism includes a first sealing ring (6). A first sealing ring (7) is connected to the side of the first sealing ring (6) close to the oil storage tank (3). Four first connecting columns (8) are connected to the edge of the first sealing ring (6) far from the oil storage tank (3). The left ends of the four first connecting columns (8) pass through the left side wall of the box body (1) and are connected to an iron ring (9); A first groove (10) is opened on the left side wall of the box body (1). A first electromagnet (11) is arranged in the first groove (10). Four first springs (12) are also connected in the first groove (10), and the other ends of the four first springs (12) are connected to the side wall of the iron ring (9). Four sliding grooves (15) are equidistantly opened on the outer side wall of the first sealing ring (6). Four sliders (14) are connected to the inner wall of the second sealing ring (13). The four sliders (14) are slidably connected in the four sliding grooves (15). A second sealing ring (16) is connected to the side of the second sealing ring (13) close to the oil storage tank (3); Four second connecting columns (17) are connected to the edge of the second sealing ring (13) far from the oil storage tank (3). The left ends of the four second connecting columns (17) pass through the left side wall of the box body (1) and are connected to a second electromagnet (20). A second groove (18) is opened on the left side wall of the box body (1). A third electromagnet (19) is arranged in the second groove (18). A limiting component is arranged in the sliding groove (15).

2. The oil storage tank sealing performance testing device according to claim 1, characterized in that, The limiting component includes three counterbores (21). Three of the counterbores (21) are opened at the bottom of the sliding groove (15). A second spring (22) is arranged in each of the counterbores (21). A first ball (24) is arranged at the upper end of the second spring (22); Three semi-circular limiting holes (23) are opened on the lower end surface of the slider (14). A sliding groove (25) is opened between the four semi-circular limiting holes (23).

3. The oil storage tank sealing performance test device according to claim 1, characterized in that, The inflation mechanism includes an air pump (26). The air pump (26) is connected to an air delivery pipe (27). The air delivery pipe (27) passes through the left side wall of the box body (1) and is connected to a through hole (28) opened in the middle of the first sealing ring (6).

4. The oil storage tank sealing performance test device according to claim 1, characterized in that, The side plugging mechanism includes a semi-circular bracket (29), with a connecting block (30) connected to each end of the semi-circular bracket (29), and a lead screw nut (38) connected to each of the two connecting blocks (30); a break (31) is formed in the middle of the semi-circular bracket (29), semi-circular chutes (32) are formed on the semi-circular bracket (29) on both sides of the break (31), and semi-circular limit grooves (33) are formed on both sides of the semi-circular chutes (32); a fixed bracket (36) is connected to the second telescopic cylinder (34), two second balls (37) are connected to the fixed bracket (36), the two second balls (37) are respectively slidably connected in the two semi-circular chutes (32), and the telescopic end of the second telescopic cylinder (34) is connected to the side plugging head (35).

5. The oil storage tank sealing performance testing device according to claim 4, characterized in that, The driving mechanism includes two driving motors (41), a placement groove (39) is formed in each of the front and rear inner walls of the box body (1), a lead screw (40) is movably connected in each of the two placement grooves (39), the right ends of the two lead screws (40) pass through the box body (1) and are respectively connected to a driving motor (41), and the two lead screw nuts (38) are respectively connected to the corresponding lead screws (40).

6. The oil storage tank sealing performance test device according to claim 4, characterized in that The water delivery mechanism includes a water tank (42) and a water pump (43), the water tank (42) and the water pump (43) are arranged on the front side wall of the box body (1), the water pump (43) is connected to a pipeline (44), one end of the pipeline (44) is connected to the water tank (42), and the other end is connected to the box body (1).

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