Water pressure testing device and method for pressure vessel

Abstract

The invention belongs to the technical field of water pressure testing, and discloses a water pressure testing device and method for a pressure vessel, and the device comprises a testing box, one side of the testing box is hinged with a protective door, the testing box is internally provided with a testing structure, two fixing plates are symmetrically arranged below the testing structure, one side of each fixing plate is provided with a cylinder, and the other side of each fixing plate is provided with a cylinder. The two air cylinders are arranged in the test box, and an air blowing assembly is arranged in the test box; the air blowing assembly comprises an air pump arranged in the test box, the output end of the air pump is connected with a connecting pipe, air pipes are evenly installed on the side wall of the connecting pipe, the air pipes are embedded into the inner wall of the test box, when water stains in the test box need to be cleaned, the air pump is started, air is blown into the test box through connection of the connecting pipe and the air pipes, and the water stains can be blow-dried; the subsequent pressure vessel can be conveniently tested, and the test environment is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydrostatic testing, and specifically relates to a hydrostatic testing device and method for pressure vessels. Background Technique

[0002] A pressure vessel is a closed device used to store or process media such as gases and liquids, capable of withstanding a certain pressure inside. They are widely used in industries such as petrochemical, energy, pharmaceutical, and food processing;

[0003] Hydrostatic testing is an essential key link in the manufacturing, installation, and use of pressure vessels, mainly used to verify the strength and sealing performance of the vessel to ensure its safe operation;

[0004] After retrieval, such as the patent: CN114942193B, an automatic testing machine for hydrostatic testing of gas cylinders, the following solution is proposed, including a testing platform, a placement pipe, a support frame, a mounting block, a first rotating block, and an open plate. On both outer walls of the two support frames, two guide rods are fixedly connected. Through the setting of an open air plate, when the gas cylinder is placed in the pressure-bearing box, rotate the second turning handle, so that the second turning handle drives one connecting rod to drive the other connecting rod to adjust upward, thereby enabling the open plate on the second rotating shaft to move in the installation groove on the limiting plate. When the upper limiting rod abuts against the inner wall of the installation groove, at this time, when the second turning handle continues to rotate, the lower limiting rod enters the arc end of the installation groove, so that the air plate opens, and then the gas cylinder is placed, and the gas cylinder can be placed more conveniently, improving the detection efficiency;

[0005] When a pressure vessel ruptures during hydrostatic testing, the pressurized water inside will quickly spray out from the rupture point, forming water splashes. These waters may splash into every corner of the testing area, not only making the ground slippery and increasing the risk of personnel slipping and falling, but also causing pollution to the ground, equipment, or surrounding environment in the testing area. Summary of the Invention

[0006] The purpose of the present invention is to provide a hydrostatic testing device and method for pressure vessels to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A hydrostatic testing device for pressure vessels, including a testing box, a protective door is hinged on one side of the testing box, a testing structure is installed inside the testing box, a fixing plate is arranged below the testing structure, two fixing plates are symmetrically arranged, and on one side of each of the two fixing plates, a cylinder is installed, both cylinders are arranged inside the testing box, and a blowing component is arranged inside the testing box;

[0008] The blowing component includes an air pump disposed inside the test chamber. The output end of the air pump is connected to a connecting pipe, and air pipes are uniformly installed on the side wall of the connecting pipe. The air pipes are embedded in the inner wall of the test chamber.

[0009] As a further technical solution of the present invention, the air pipes are arranged to be inclined downward.

[0010] As a further technical solution of the present invention, a scraper is slidably installed inside the test chamber. A reciprocating lead screw and a guide shaft are embedded in the inner wall of the scraper. The top end of the reciprocating lead screw is fixedly installed with a driven wheel. A driving wheel is arranged on one side of the driven wheel. The driving wheel and the driven wheel are driven by a belt. A rotating shaft is fixedly installed inside the driving wheel. A turbine blade is fixedly installed at the bottom of the rotating shaft. The turbine blade is arranged inside the connecting pipe.

[0011] As a further technical solution of the present invention, through holes are formed in the bottom of the test chamber, and the through holes are uniformly distributed.

[0012] As a further technical solution of the present invention, support columns are fixedly installed at the bottom of the test chamber, and the support columns are arranged below the through holes.

[0013] As a further technical solution of the present invention, a sponge is installed inside the scraper.

[0014] As a further technical solution of the present invention, filter holes are uniformly formed at the bottom of the scraper, and the filter holes are arranged below the sponge.

[0015] As a further technical solution of the present invention, a pressing plate is arranged at the top end of the sponge. The pressing plate is slidably installed inside the scraper. Connecting shafts are uniformly connected to the bottom end of the pressing plate. A connecting plate is arranged below the connecting shafts. The connecting plate is fixedly installed on the inner wall of the test chamber.

[0016] As a further technical solution of the present invention, tension springs are installed at the top end of the pressing plate, and the tension springs are uniformly distributed.

[0017] A method for a water pressure testing device of a pressure vessel includes the following steps:

[0018] S1: When a pressure vessel is undergoing a water pressure test, first place the pressure vessel between two fixing plates, and then move the fixing plates towards one side of the pressure vessel through a cylinder to fix it. After fixing, connect the pressure vessel to the test structure for testing;

[0019] S2: When the pressure vessel ruptures during the water pressure test, isolate the ruptured vessel through the protection of the test chamber and the protective door to prevent it from continuing to leak or causing other hazards;

[0020] S3: When it is necessary to clean the water stains inside the test chamber, start the air pump and blow air into the test chamber through the connection pipe connected to the air pipe, which helps to dry the water stains.

[0021] At the same time, the gas flowing in the connection pipe drives the turbine blade to rotate. The rotation of the turbine blade drives the rotation of the rotating shaft. The rotation of the rotating shaft drives the rotation of the driving wheel. When the driving wheel rotates, it drives the driven wheel to rotate through belt transmission. The rotation of the driven wheel drives the rotation of the reciprocating screw rod. The rotation of the reciprocating screw rod drives the movement of the scraper, so that the scraper scrapes off the water stains on the inner wall of the test chamber during the movement.

[0022] S4: During the process of the scraper moving to scrape water, the sponge contacts the inner wall of the test chamber and can suck away the water stains attached to the inner wall of the test chamber.

[0023] S5: When the scraper moves downward, the movement of the scraper drives the movement of the connecting shaft. When the connecting shaft moves above the connecting plate, it is attracted downward by its magnetism and fits with the top end of the connecting plate. At the same time, the movement of the connecting shaft drives the movement of the pressing plate. The pressing plate moves downward to squeeze the sponge, facilitating the discharge of the water inside the sponge. At the same time, when the connecting shaft moves downward and contacts the connecting plate, the tension spring deforms and stores elastic potential energy. When the connecting shaft separates from the connecting plate after the scraper moves upward, the pressing plate moves upward and resets by releasing the elastic potential energy of the tension spring.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. Through the setting of the air blowing assembly in the present invention, when a pressure vessel is undergoing a hydrostatic test, first place the pressure vessel between two fixed plates, and then move the fixed plates to one side of the pressure vessel through a cylinder to fix it. After fixing, connect the pressure vessel to the test structure for testing. When the pressure vessel ruptures during the hydrostatic test, the ruptured container is isolated through the protection of the test chamber and the protective door to prevent it from continuing to leak or causing other hazards. When it is necessary to clean the water stains inside the test chamber, start the air pump and blow air into the test chamber through the connection pipe connected to the air pipe, which helps to dry the water stains and facilitates the subsequent testing of the pressure vessel, improving the test environment.

[0026] 2. Through the setting of scraping the water stains on the inner wall of the test chamber by the scraper in the present invention, when drying the water stains inside the test chamber, the gas flowing in the connection pipe drives the turbine blade to rotate. The rotation of the turbine blade drives the rotation of the rotating shaft. The rotation of the rotating shaft drives the rotation of the driving wheel. When the driving wheel rotates, it drives the driven wheel to rotate through belt transmission. The rotation of the driven wheel drives the rotation of the reciprocating screw rod. The rotation of the reciprocating screw rod drives the movement of the scraper, so that the scraper scrapes off the water stains on the inner wall of the test chamber during the movement, which helps to improve the drying effect of the test chamber.

[0027] 3. In the present invention, through the setting of the pressing plate, when the scraping plate moves downward, the movement of the scraping plate drives the movement of the connecting shaft. When the connecting shaft moves above the connecting plate, it is attracted downward by its magnetism and fits with the top end of the connecting plate. At the same time, the movement of the connecting shaft drives the movement of the pressing plate, and the pressing plate moves downward to squeeze the sponge, facilitating the discharge of the water inside the sponge and restoring the water absorption performance of the sponge. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 is a schematic sectional view of the overall structure of the present invention;

[0030] Figure 3 is a schematic sectional view of the structure at the test box of the present invention;

[0031] Figure 4 of the present invention Figure 3 is an enlarged schematic view of the structure at A in;

[0032] Figure 5 is a schematic sectional view of the structure at the scraping plate of the present invention;

[0033] Figure 6 of the present invention Figure 5 is an enlarged schematic view of the structure at B in.

[0034] In the figure: 1. Test box; 2. Protection door; 3. Test structure; 4. Fixed plate; 5. Cylinder; 6. Air pump; 7. Connecting pipe; 8. Air pipe; 9. Through hole; 10. Scraping plate; 11. Reciprocating lead screw; 12. Driven wheel; 13. Driving wheel; 14. Belt; 15. Rotating shaft; 16. Turbine blade; 17. Sponge; 18. Filter hole; 19. Pressing plate; 20. Tension spring; 21. Connecting shaft; 22. Connecting plate; 23. Support column; 24. Guide shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Such as Figures 1 to 6As shown, in the embodiment of the present invention, a hydrostatic test device for a pressure vessel includes a test box 1. A protective door 2 is hinged on one side of the test box 1. A test structure 3 is installed inside the test box 1. A fixing plate 4 is arranged below the test structure 3. There are two fixing plates 4 symmetrically arranged. On one side of the two fixing plates 4, air cylinders 5 are installed. Both air cylinders 5 are arranged inside the test box 1. A blowing component is arranged inside the test box 1;

[0037] The blowing component includes an air pump 6 arranged inside the test box 1. The output end of the air pump 6 is connected to a connecting pipe 7. Air pipes 8 are evenly installed on the side wall of the connecting pipe 7. The air pipes 8 are embedded in the inner wall of the test box 1.

[0038] The protective door 2 is made of a transparent material, which is convenient for observing the situation inside the test box 1 during the test;

[0039] When a pressure vessel is undergoing a hydrostatic test, first place the pressure vessel between the two fixing plates 4, and then use the air cylinders 5 to move the fixing plates 4 towards one side of the pressure vessel to fix it. After fixing, connect the pressure vessel to the test structure 3 for testing;

[0040] When the pressure vessel bursts during the hydrostatic test, the burst container is isolated through the protection of the test box 1 and the protective door 2 to prevent it from continuing to leak or cause other hazards;

[0041] When it is necessary to clean the water stains inside the test box 1, start the air pump 6, and blow air into the test box 1 through the connection between the connecting pipe 7 and the air pipes 8, which helps to dry the water stains and is convenient for testing subsequent pressure vessels, improving the test environment.

[0042] As Figure 1 and Figure 2 shown, the air pipes 8 are arranged to slope downwards.

[0043] To ensure that a certain flow pattern of air is formed inside the equipment, which helps the uniform evaporation of moisture throughout the equipment. This can not only improve the drying efficiency but also ensure a more consistent degree of dryness inside the equipment.

[0044] As Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, a scraper 10 is slidably installed inside the test box 1. A reciprocating lead screw 11 and a guide shaft 24 are embedded in the inner wall of the scraper 10. A driven wheel 12 is fixedly installed at the top of the reciprocating lead screw 11. A driving wheel 13 is arranged on one side of the driven wheel 12. The driving wheel 13 and the driven wheel 12 are driven by a belt 14. A rotating shaft 15 is fixedly installed inside the driving wheel 13. A turbine blade 16 is fixedly installed at the bottom of the rotating shaft 15. The turbine blade 16 is arranged inside the connecting pipe 7.

[0045] To improve the rotational stability of the turbine blade 16, a wind guide plate can be provided inside the connecting pipe 7;

[0046] When drying the water stains in the drying test chamber 1, the gas flows in the connecting pipe 7 to drive the rotation of the turbine blade 16. The rotation of the turbine blade 16 drives the rotation of the rotating shaft 15, and the rotation of the rotating shaft 15 drives the rotation of the driving wheel 13. When the driving wheel 13 rotates, it drives the driven wheel 12 to rotate through the belt 14. The rotation of the driven wheel 12 drives the rotation of the reciprocating lead screw 11, and the rotation of the reciprocating lead screw 11 drives the movement of the scraper 10, so that the scraper 10 scrapes off the water stains on the inner wall of the test chamber 1 during the movement, which helps to improve the drying effect of the test chamber 1.

[0047] As Figure 2 and Figure 3 shown, through holes 9 are provided in the bottom of the test chamber 1, and the through holes 9 are evenly distributed.

[0048] The bottom of the test chamber 1 is hollow and provided with a drain port to drain water from the equipment;

[0049] During the process of drying the water stains in the test chamber 1 and scraping the water, the water can be drained through the through holes 9.

[0050] As Figure 2 and Figure 3 shown, support columns 23 are fixedly installed at the bottom of the test chamber 1, and the support columns 23 are arranged below the through holes 9.

[0051] Supporting the hollow part at the bottom of the test chamber 1 helps to improve the stability of the equipment support.

[0052] As Figure 3 、 Figure 5 and Figure 6 shown, a sponge 17 is installed inside the scraper 10.

[0053] During the process of the scraper 10 moving to scrape water, the sponge 17 contacts the inner wall of the test chamber 1, and can absorb the water stains attached to the inner wall of the test chamber 1, improving the drying effect inside the equipment.

[0054] As Figure 5 and Figure 6 shown, filter holes 18 are evenly provided at the bottom of the scraper 10, and the filter holes 18 are arranged below the sponge 17.

[0055] As Figure 5 and Figure 6 shown, a pressing plate 19 is provided at the top of the sponge 17. The pressing plate 19 is slidably installed inside the scraper 10. The bottom end of the pressing plate 19 is evenly connected with connecting shafts 21, and a connecting plate 22 is arranged below the connecting shafts 21. The connecting plate 22 is fixedly installed on the inner wall of the test chamber 1.

[0056] The connecting plate 22 and the connecting shaft 21 are magnetically connected;

[0057] When the scraper 10 moves downward, the movement of the scraper 10 drives the movement of the connecting shaft 21. When the connecting shaft 21 moves above the connecting plate 22, it is attracted downward by its magnetism and fits against the top end of the connecting plate 22. At the same time, the movement of the connecting shaft 21 drives the movement of the pressing plate 19, and the pressing plate 19 moves downward to squeeze the sponge 17, facilitating the discharge of the water inside the sponge 17 and restoring the water absorption performance of the sponge 17.

[0058] As Figures 1 to 6 shown, a tension spring 20 is installed at the top end of the pressing plate 19, and the tension springs 20 are evenly distributed.

[0059] Both ends of the tension spring 20 are fixedly connected to the scraper 10 and the pressing plate 19 respectively;

[0060] When the scraper 10 moves downward and the connecting shaft 21 moves downward to contact the connecting plate 22, the tension spring 20 deforms to store elastic potential energy;

[0061] After the scraper 10 moves upward and the connecting shaft 21 separates from the connecting plate 22, the elastic potential energy is released through the tension spring 20 to move the upper pressing plate 19 upward to reset.

[0062] A method for a hydrostatic test device of a pressure vessel includes the following steps:

[0063] S1: When a pressure vessel is undergoing a hydrostatic test, first place the pressure vessel between two fixed plates 4, and then use a cylinder 5 to move the fixed plate 4 toward one side of the pressure vessel to fix it. After fixing, connect the pressure vessel to the test structure 3 for testing;

[0064] S2: When the pressure vessel ruptures during the hydrostatic test, isolate the ruptured vessel through the protection of the test box 1 and the protective door 2 to prevent it from continuing to leak or causing other hazards;

[0065] S3: When it is necessary to clean the water stains inside the test box 1, start the air pump 6, connect it to the air pipe 8 through the connecting pipe 7 to blow air into the test box 1, which helps to dry the water stains;

[0066] At the same time, the gas flowing in the connecting pipe 7 drives the turbine blade 16 to rotate. The rotation of the turbine blade 16 drives the rotation of the rotating shaft 15. The rotation of the rotating shaft 15 drives the rotation of the driving wheel 13. When the driving wheel 13 rotates, it drives the driven wheel 12 to rotate through the belt 14. The rotation of the driven wheel 12 drives the rotation of the reciprocating lead screw 11. The rotation of the reciprocating lead screw 11 drives the movement of the scraper 10, so that the scraper 10 scrapes off the water stains on the inner wall of the test box 1 during the movement;

[0067] S4: During the process of the squeegee 10 moving to wipe water, the sponge 17 contacts the inner wall of the test box 1, and can suck away the water stains attached to the inner wall of the test box 1;

[0068] S5: When the squeegee 10 moves downward, the movement of the squeegee 10 drives the movement of the connecting shaft 21. When the connecting shaft 21 moves above the connecting plate 22, it is attracted downward by its magnetism and fits with the top end of the connecting plate 22. At the same time, the movement of the connecting shaft 21 drives the movement of the pressing plate 19. The pressing plate 19 moves downward to squeeze the sponge 17, facilitating the discharge of the water inside the sponge 17. At the same time, when the connecting shaft 21 moves downward and contacts the connecting plate 22, the tension spring 20 deforms and stores elastic potential energy. After the connecting shaft 21 separates from the connecting plate 22 when the squeegee 10 moves upward, the elastic potential energy is released through the tension spring 20, and the upper pressing plate 19 moves upward to reset.

[0069] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydrostatic test device for a pressure vessel, comprising a test chamber (1), characterized in that: One side of the test chamber (1) is hinged with a protective door (2). A test structure (3) is installed inside the test chamber (1). A fixed plate (4) is arranged below the test structure (3). There are two fixed plates (4) symmetrically arranged. On one side of each of the two fixed plates (4), a cylinder (5) is installed. Both of the two cylinders (5) are arranged inside the test chamber (1). A blowing component is arranged inside the test chamber (1). The blowing component includes an air pump (6) arranged inside the test chamber (1). The output end of the air pump (6) is connected with a connecting pipe (7). Air pipes (8) are uniformly installed on the side wall of the connecting pipe (7). The air pipes (8) are embedded in the inner wall of the test chamber (1).

2. The hydrostatic test device for a pressure vessel according to claim 1, characterized in that: The air pipes (8) are arranged to be inclined downward.

3. The hydrostatic test device for a pressure vessel according to claim 1, characterized in that: A scraper (10) is slidably installed inside the test chamber (1). A reciprocating lead screw (11) and a guide shaft (24) are embedded in the inner wall of the scraper (10). A driven wheel (12) is fixedly installed at the top end of the reciprocating lead screw (11). A driving wheel (13) is arranged on one side of the driven wheel (12). The driving wheel (13) and the driven wheel (12) are driven by a belt (14). A rotating shaft (15) is fixedly installed inside the driving wheel (13). A turbine blade (16) is fixedly installed at the bottom of the rotating shaft (15). The turbine blade (16) is arranged inside the connecting pipe (7).

4. The hydrostatic test device for a pressure vessel according to claim 1, characterized in that: Through holes (9) are formed at the bottom of the test chamber (1). The through holes (9) are uniformly distributed.

5. The hydrostatic test device for a pressure vessel according to claim 1, characterized in that: Support columns (23) are fixedly installed at the bottom of the test chamber (1). The support columns (23) are arranged below the through holes (9).

6. The hydrostatic test device for a pressure vessel according to claim 3, characterized in that: A sponge (17) is installed inside the scraper (10).

7. The hydrostatic test device for a pressure vessel according to claim 6, characterized in that: Filter holes (18) are uniformly formed at the bottom of the scraper (10). The filter holes (18) are arranged below the sponge (17).

8. The hydrostatic test device for a pressure vessel according to claim 6, characterized in that: A pressing plate (19) is arranged at the top end of the sponge (17). The pressing plate (19) is slidably installed inside the scraper (10). Connecting shafts (21) are uniformly connected to the bottom end of the pressing plate (19). A connecting plate (22) is arranged below the connecting shafts (21). The connecting plate (22) is fixedly installed on the inner wall of the test chamber (1).

9. The hydrostatic test device for a pressure vessel according to claim 8, characterized in that: Pulling springs (20) are installed at the top end of the pressing plate (19). The pulling springs (20) are uniformly distributed.

10. Method for the hydrostatic test device of a pressure vessel, which method is applicable to the hydrostatic test device of the pressure vessel described in claims 1-9 above, characterized in that, Including the following steps: S1: When a pressure vessel is undergoing a hydrostatic test, first place the pressure vessel between the two fixed plates (4), and then move the fixed plates (4) towards one side of the pressure vessel through the cylinders (5) to fix it. After fixing, connect the pressure vessel with the test structure (3) for testing; S2: When the pressure vessel ruptures during the hydrostatic test, isolate the ruptured vessel through the protection of the test chamber (1) and the protective door (2) to prevent it from continuing to leak or causing other hazards; S3: When it is necessary to clean the water stains inside the test chamber (1), start the air pump (6), and blow air into the test chamber (1) through the connection between the connecting pipe (7) and the air pipes (8), which helps to dry the water stains; Meanwhile, the gas flowing in the connecting pipe (7) drives the turbine blade (16) to rotate. The rotation of the turbine blade (16) drives the rotation of the rotating shaft (15). The rotation of the rotating shaft (15) drives the rotation of the driving wheel (13). When the driving wheel (13) rotates, it drives the driven wheel (12) to rotate through the belt (14). The rotation of the driven wheel (12) drives the rotation of the reciprocating lead screw (11). The rotation of the reciprocating lead screw (11) drives the movement of the scraper (10), so that the scraper (10) scrapes off the water stains on the inner wall of the test box (1) during the movement; S4: During the process of the scraper (10) moving to scrape water, the sponge (17) contacts the inner wall of the test box (1), and can suck away the water stains attached to the inner wall of the test box (1); S5: When the scraper (10) moves downward, the movement of the scraper (10) drives the movement of the connecting shaft (21). When the connecting shaft (21) moves above the connecting plate (22), it is attracted downward by its magnetism and moves downward to fit with the top end of the connecting plate (22). At the same time, the movement of the connecting shaft (21) drives the movement of the pressing plate (19). The pressing plate (19) moves downward to squeeze the sponge (17), which is convenient for the water inside the sponge (17) to be discharged. At the same time, when the connecting shaft (21) moves downward and contacts the connecting plate (22), the tension spring (20) deforms and stores elastic potential energy. After the connecting shaft (21) separates from the connecting plate (22) after the scraper (10) moves upward, the pressing plate (19) moves upward and resets by the release of the elastic potential energy of the tension spring (20).

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