Pressure testing device and method for pressure vessel

Abstract

The invention relates to the technical field of pressure testing devices.The embodiment of the invention provides a pressure testing device and method.The pressure testing device of the pressure container comprises a connecting cylinder, a moving plate, a pushing assembly, a supporting assembly and a plugging assembly, and the connecting cylinder is welded and fixedly installed at a pressure testing opening of the pressure container; the moving plate is slidably installed in a sliding groove of the pressure test plate, the pushing assembly is arranged on the side face of the pressure test plate, a pressure test assembly is arranged on the pushing assembly through the moving plate, the pushing assembly is used for pushing the pressure test assembly into a pressure container, the supporting assembly is arranged on the pushing assembly, and the plugging assembly is arranged on the supporting assembly and used for plugging a gap. According to the technical scheme, the technical problem that in the prior art, when over-pressure testing is carried out on the pressure vessel and the connecting pipe is installed on the pressure vessel, a plurality of bolts need to be installed when flange connection is carried out, and consequently the process is tedious is solved.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of pressure testing devices, and in particular, to a pressure testing device and method for a pressure vessel. Background Art

[0002] Pressure vessels generally refer to closed containers that withstand gas or liquid pressure internally or externally and have high safety requirements. They are mainly responsible for reactions, heat transfer, mass transfer and other links in production, or store and transport gas or liquefied gas under pressure. They are widely used in the petroleum, machinery, chemical and other industries. After the pressure vessel is produced, it is usually subjected to a pressure test. By applying a test pressure to the pressure vessel, it is checked whether the container has sufficient strength under the design pressure, and it can also be tested whether the sealing is good to avoid leakage of stored gas during subsequent use.

[0003] When pressure testing a pressure vessel, the air outlet pipe is usually connected and installed at the pressure test port of the pressure vessel, and then the air outlet pipe is connected to the air source or water source through the pump body, and the air or water source is passed into the pressure vessel for testing. When the air outlet pipe is connected to the pressure test port of the pressure vessel, it is usually flange-connected or welded into the pressure vessel. When connected through the flange, multiple bolts need to be threadedly installed on the pressure vessel and the flange. Because some air outlet pipes are heavy, it is more laborious to lift the air outlet pipe, pass it through the flange to the pressure test port, and then thread the bolts in sequence. It may be dangerous if you are not careful when lifting it manually. If the air outlet pipe is installed at the pressure test port of the pressure vessel by welding, it is difficult to disassemble. When the air outlet pipe is cut and polished during subsequent disassembly, it is also easy to cause certain damage to the pressure vessel. Summary of the Invention

[0004] To overcome the above-mentioned defects, the embodiments of the present disclosure provide a pressure testing device and method for a pressure vessel, which solves the technical problem in the prior art that when pressure testing a pressure vessel and installing a connecting pipe on the pressure vessel, multiple bolts need to be installed when connecting through a flange, which is relatively cumbersome.

[0005] According to one aspect, at least one embodiment of the present disclosure provides a pressure test device for a pressure vessel, comprising a pressure test plate, which is installed at the top of the pressure test plate during pressure testing of the pressure vessel, wherein two slide grooves are provided at the top of the pressure test plate, and a pressure test port is provided on the side of the pressure vessel, further comprising a connecting tube, a movable plate, a pushing assembly, a supporting assembly and a sealing assembly, wherein the connecting tube is welded and fixedly installed at the pressure test port of the pressure vessel, the movable plate is slidably installed in the slide groove of the pressure test plate, the pushing assembly is arranged on the side of the pressure test plate, a pressure test assembly is arranged on the pushing assembly through the movable plate, the pushing assembly is used to push the pressure test assembly into the pressure vessel, two supporting assemblies are provided, and the supporting assembly is arranged on the pushing assembly for supporting the pressure test assembly after pushing the pressure test assembly into the pressure vessel, and the sealing assembly is arranged on the supporting assembly for sealing the gap.

[0006] Furthermore, the pushing assembly includes a mounting plate 1, a reciprocating screw, a first motor, a screw nut and a limit assembly. Two mounting plates 1 are provided, and the two mounting plates 1 are fixedly mounted on one side of the pressure test plate. The reciprocating screw is rotatably mounted between the two mounting plates 1. The first motor is mounted on the side of one of the mounting plates 1, and the output end of the first motor is coaxially connected to the reciprocating screw. The screw nut is mounted on the reciprocating screw, and the limit assembly is arranged on the other side of the pressure test plate.

[0007] Furthermore, the limit assembly includes a second mounting plate, a limit rod, a limit block and a connecting plate. There are two second mounting plates, and the two second mounting plates are fixedly mounted on the other side of the pressure test plate. The limit rod is fixedly mounted between the two second mounting plates, and the limit block is slidably mounted on the limit rod. There are two connecting plates, and the two connecting plates are respectively fixedly mounted on the sides of the screw nut and the limit block, and the movable plate is fixedly mounted between the two connecting plates.

[0008] Furthermore, the pressure test assembly includes an air pump, an air outlet pipe and an air inlet pipe. The air pump is installed at the top of the movable plate. The air outlet pipe is connected to the air outlet of the air pump. The air inlet pipe is connected to the air inlet of the air pump.

[0009] Furthermore, the supporting assembly includes a sliding frame, a rack, a pushing frame, a supporting half ring, a supporting frame, a rotating shaft, a driving gear and a transmission assembly. The sliding frame is slidably installed in the sliding groove of the pressure test plate, and a sliding groove is provided at the top of the sliding frame. The rack is slidably installed in the sliding groove at the top of the sliding frame. The pushing frame is fixedly installed on the rack, the supporting half ring is fixedly installed on the side of the pushing frame, and a rubber sealing ring is installed on the side of the supporting half ring. The supporting frame is fixedly installed on the bottom end of the sliding frame, the rotating shaft is rotatably installed on the supporting frame, the driving gear is fixedly installed on one end of the rotating shaft, and the driving gear is meshed with the rack. The transmission assembly is provided with one, and the transmission assembly is arranged on the movable plate.

[0010] Furthermore, the transmission assembly includes a connecting frame, a transmission shaft, a bevel gear 1, a bevel gear 2 and a second motor. The connecting frame is fixedly mounted on the sides of the movable plate and the sliding frame, the transmission shaft is rotatably mounted on the connecting frame, two bevel gears 1 are provided, and the two bevel gears 1 are respectively fixedly mounted on the two ends of the transmission shaft, two bevel gears 2 are provided, and the two bevel gears 2 are respectively fixedly mounted on the other ends of the two rotating shafts, and the two bevel gears 1 are respectively meshed with the two bevel gears 2, the second motor is mounted on the side of one of the connecting frames, and the second motor is coaxially connected to one of the rotating shafts.

[0011] Furthermore, the sealing assembly includes an electric push rod and a sealing ring. Two electric push rods are provided, and the two electric push rods are respectively installed on the sides of the two pushing frames. The sealing ring is slidably installed on the outer wall of the outlet pipe through a sliding ring, and the sealing ring is fixedly installed on the output ends of the two electric push rods through two connecting rods.

[0012] Furthermore, a semicircular groove is formed on the supporting semi-ring, and the curvature of the inner wall of the semicircular groove is consistent with the curvature of the outer wall of the air outlet pipe.

[0013] Furthermore, the sum of the side areas of the two supporting half rings is consistent with the side area of the connecting tube.

[0014] A pressure testing method for a pressure vessel, using a pressure testing device for a pressure vessel according to the above scheme, comprises the following steps: Step 1: Installation: Start the first motor. The output end of the first motor drives the reciprocating screw to rotate between the two mounting plates, thereby moving the screw nut on the reciprocating screw, and at the same time drives the connecting plate and the moving frame forward, and at the same time drives the other connecting plate to move, drives the limit block to slide on the limit rod, drives the air pump and the air outlet pipe forward, and moves until the air outlet pipe is inserted into the connecting tube and the pressure test port of the pressure vessel; The second gear is rotated by the second motor, and the second gear is rotated by the second motor, and the second gear is rotated by the second motor, and the second gear is rotated by the second motor, and the gear is rotated by the second motor, and the gear is rotated by the second motor, and the gear is rotated by the second motor, and the gear is rotated by the second motor, and the gear is rotated by the second motor, and the gear is rotated by the second motor, and the gear is rotated by the second motor, and the gear is rotated by the second motor, and the gear is rotated by the second motor, and the gear is rotated by the second motor, Step 3: Blocking: There will be a gap after the two supporting half rings are fitted together. Then, by starting the electric push rod, the electric push rod drives the sealing ring to slide on the outer wall of the outlet pipe, and then fits on the side of the two supporting half rings to block the gap; Step 4: Pressure test: connect the air inlet pipe to the air source, and use the air pump to pass the gas through the air inlet pipe into the pressure vessel for pressure test.

[0015] The beneficial effects of the embodiments of the present disclosure are: 1. In the present disclosure, during installation, the outlet pipe of the pressure test assembly can be moved and connected to the pressure test port of the pressure vessel by pushing the assembly and the pressure test assembly. Compared with installing the outlet pipe on the pressure vessel through a flange, it is more convenient and more labor-saving. Moreover, if the weight of the outlet pipe is heavy, manual handling is not required, which is safer.

[0016] 2. In the present disclosure, after the connection is completed, the support assembly can clamp and support both sides of the air outlet pipe so that it can be firmly placed at the pressure test port, and the gap between the connecting tube and the air outlet pipe can be sealed during support, and the gap between the two supporting half rings can be sealed by the sealing assembly to avoid poor sealing effect during the pressure test.

[0017] To summarize, the device can connect the outlet pipe to the pressure vessel without manual installation during pressure testing through the mutual cooperation between the connecting cylinder, movable plate, pressure test assembly, pushing assembly, supporting assembly and blocking assembly. This method is not only convenient for installation and labor-saving, but also more flexible in disassembly than directly welding the outlet pipe to the pressure vessel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly describes the drawings required for use in describing the embodiments of the present disclosure. Obviously, the drawings described below are merely some exemplary embodiments of the present disclosure. Those skilled in the art can, without inventive effort, derive other drawings based on the content of the exemplary embodiments of the present disclosure and these drawings.

[0019] Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 It is a structural schematic diagram of another state of the present invention as a whole; Figure 3 This is a schematic structural diagram of the cooperation between the push assembly and the movable plate of the present invention; Figure 4 This is a schematic structural diagram of the pressure vessel, connecting tube and pressure test assembly of the present invention; Figure 5 This is a schematic diagram of the structure of the movable plate and the supporting assembly of the present invention; Figure 6 It is a structural schematic diagram of the connecting plate of the present invention; Figure 7 It is a structural schematic diagram of the blocking component of the present invention.

[0020] In the figure: 1. Test pressure plate; 2. Pressure vessel; 3. Connecting cylinder; 4. Moving plate; 5. Mounting plate 1; 6. Reciprocating screw; 7. First motor; 8. Screw nut; 9. Mounting plate 2; 10. Limit rod; 11. Limit block; 12. Connecting plate; 13. Air pump; 14. Outlet pipe; 15. Inlet pipe; 16. Sliding frame; 17. Rack; 18. Pushing frame; 19. Support half ring; 20. Support frame; 21. Rotating shaft; 22. Driving gear; 23. Connecting frame; 24. Transmission shaft; 25. Bevel gear 1; 26. Bevel gear 2; 27. Second motor; 28. Electric push rod; 29. Sealing ring. DETAILED DESCRIPTION

[0021] The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than to limit the present disclosure.

[0022] To simplify the drawings, only the parts relevant to the disclosure are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically shown or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0023] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on the specific circumstances.

[0024] In the present disclosure, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0025] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present disclosure.

[0026] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0027] Example 1, as Figures 1 to 7As shown, it shows a pressure test device for a pressure vessel in one embodiment of the present disclosure, including a pressure test plate 1. The pressure vessel 2 is installed on the top of the pressure test plate 1 during pressure testing. Two slide grooves are provided on the top of the pressure test plate 1, and a pressure test port is provided on the side of the pressure vessel 2. It also includes a connecting tube 3, a movable plate 4, a pushing assembly, a supporting assembly and a sealing assembly. The connecting tube 3 is welded and fixedly installed at the pressure test port of the pressure vessel 2. The movable plate 4 is slidably installed in the slide groove of the pressure test plate 1. The pushing assembly is arranged on the side of the pressure test plate 1. A pressure test assembly is arranged on the pushing assembly through the movable plate 4. The pushing assembly is used to push the pressure test assembly into the pressure vessel 2. Two support assemblies are provided. The support assembly is arranged on the pushing assembly for supporting the pressure test assembly after pushing the pressure test assembly into the pressure vessel 2. The sealing assembly is arranged on the supporting assembly for sealing the gap.

[0028] When the pressure vessel 2 needs to be pressure tested, first install the pressure test assembly into the pressure test port of the pressure vessel 2 by pushing the assembly. Figure 2 As shown, the air outlet pipe 14 can be fitted and supported by the support assembly before being pushed, as shown in FIG. Figure 5 and Figure 6 As shown, the support assembly includes a sliding frame 16, a rack 17, a pushing frame 18, a supporting half ring 19, a supporting frame 20, a rotating shaft 21, a driving gear 22 and a transmission assembly. The sliding frame 16 is slidably installed in the slide groove of the test pressure plate 1, and a slide groove is provided at the top of the sliding frame 16. The rack 17 is slidably installed in the slide groove at the top of the sliding frame 16. The pushing frame 18 is fixedly installed on the rack 17. The supporting half ring 19 is fixedly installed on the side of the pushing frame 18, and a rubber sealing ring is installed on the side of the supporting half ring 19. The supporting frame 20 is fixedly installed on the bottom end of the sliding frame 16. The rotating shaft 21 is rotatably installed on the supporting frame 20. The driving gear 22 is fixedly installed on one end of the rotating shaft 21, and the driving gear 22 is meshed with the rack 17. There is one component, and the transmission component is arranged on the movable plate 4. The transmission component includes a connecting frame 23, a transmission shaft 24, a bevel gear 1 25, a bevel gear 2 26 and a second motor 27. The connecting frame 23 is fixedly mounted on the side of the movable plate 4 and the sliding frame 16. The transmission shaft 24 is rotatably mounted on the connecting frame 23. There are two bevel gears 1 25, and the two bevel gears 1 25 are respectively fixedly mounted on the two ends of the transmission shaft 24. There are two bevel gears 26, and the two bevel gears 26 are respectively fixedly mounted on the other end of the two rotating shafts 21, and the two bevel gears 1 25 are respectively meshed with the two bevel gears 26. The second motor 27 is mounted on the side of one of the connecting frames 23, and the second motor 27 is coaxially connected to one of the rotating shafts 21.

[0029] Specifically, the second motor 27 is started, and the output end of the second motor 27 drives one of the rotating shafts 21 to rotate, and the rotating shaft 21 drives one of the driving gears 22 to rotate, and the driving gear 22 drives the rack 17 to slide on the top of the sliding frame 16, thereby driving the push frame 18 and the supporting half ring 19 to move forward to fit the outlet pipe 14, and the rotating shaft 21 drives the bevel gear 2 26 to rotate, and the bevel gear 2 26 drives one of the bevel gears 1 25 to rotate, and the bevel gear 1 25 drives the transmission shaft 24 to rotate, and the transmission shaft 24 drives the bevel gear at the other end. As wheel 1 25 rotates, bevel gear 1 25 drives another bevel gear 2 26 to rotate, bevel gear 2 26 drives the rotating shaft 21 to rotate, the rotating shaft 21 drives another driving gear 22 to rotate, the driving gear 22 drives the rack 17 to move, the rack 17 drives another push frame 18 and the supporting half ring 19 to move forward, and the two sides of the two supporting half rings 19 fit together because a semicircular groove is provided on the supporting half ring 19, and the curvature of the inner wall of the semicircular groove is consistent with the curvature of the outer wall of the outlet pipe 14, so it fits together with the outer wall of the outlet pipe 14.

[0030] Then push the assembly to make the support half ring 19 fit on the side of the connecting tube 3, as shown in the figure. Figure 3As shown, the pushing assembly includes a mounting plate 5, a reciprocating screw 6, a first motor 7, a screw nut 8 and a limit assembly. There are two mounting plates 5, and the two mounting plates 5 are fixedly mounted on one side of the pressure test plate 1. The reciprocating screw 6 is rotatably mounted between the two mounting plates 5. The first motor 7 is mounted on the side of one of the mounting plates 5, and the output end of the first motor 7 is coaxially connected to the reciprocating screw 6. The screw nut 8 is mounted on the reciprocating screw 6. The limit assembly is arranged on the other side of the pressure test plate 1. The limit assembly includes a mounting plate 9, a limit rod 10, a limit block 11 and a connecting plate 12. There are two mounting plates 9, and the two mounting plates 9 are fixedly mounted on the other side of the pressure test plate 1. The limit rod 10 is fixedly mounted between the two mounting plates 9. The limit block 11 is slidably mounted on the limit rod 10. There are two connecting plates 12, and the two connecting plates 12 are respectively fixedly mounted on the sides of the screw nut 8 and the limit block 11, and the moving plate 4 is fixedly mounted between the two connecting plates 12. Specifically, start the first motor 7, the output of the first motor 7 The end drives the reciprocating screw 6 to rotate between the two mounting plates 5. It should be added that the screw nut 8 and the reciprocating screw 6 are rolling thread transmission, which is a well-known technology. Therefore, the screw nut 8 can move on the reciprocating screw 6, and the screw nut 8 drives one of the connecting plates 12 to move, and the connecting plate 12 drives the moving plate 4 to slide forward on the test pressure plate 1. The connecting plate 12 on the other side of the moving plate 4 is connected to the limit block 11 to slide synchronously on the limit rod 10, and under the drive of the connecting frame 23, the sliding frame 16 moves forward synchronously. When the side of the supporting half ring 19 is moved to the same horizontal position as the side of the connecting tube 3, and the supporting half ring 19 continues to move forward and fits against the side of the connecting tube 3, because the sum of the area of the side surfaces of the two supporting half rings 19 is consistent with the area of the side surfaces of the connecting tube 3, the two supporting half rings 19 can fit and seal the side surfaces of the connecting tube 3, and the rubber sealing ring will squeeze into the connecting tube 3 to seal the annular gap between the connecting tube 3 and the supporting half ring 19, thereby maintaining the sealing and avoiding leakage during gas transmission.

[0031] The two supporting half rings 19 are placed close together, so there will be a small gap in the middle. In order to ensure a better pressure test effect, the gap between the two supporting half rings 19 can be blocked by a blocking component, such as Figure 7 As shown, the sealing assembly includes an electric push rod 28 and a sealing ring 29. There are two electric push rods 28, which are respectively installed on the sides of the two push frames 18. The sealing ring 29 is slidably installed on the outer wall of the outlet pipe 14 through a sliding ring, and the sealing ring 29 is fixedly installed on the output ends of the two electric push rods 28 through two connecting rods. Specifically, when the electric push rod 28 is started, the output end of the electric push rod 28 drives the sealing ring 29 to move on the outlet pipe 14 toward the connecting tube 3, thereby fitting against the sides of the two supporting half rings 19 to seal the gap.

[0032] After the outlet pipe 14 is inserted, pressure test is performed. Figure 4 As shown, the pressure test assembly includes an air pump 13, an air outlet pipe 14 and an air inlet pipe 15. The air pump 13 is installed at the top of the movable plate 4. The air outlet pipe 14 is connected to the air outlet installed at the air pump 13, and the air inlet pipe 15 is connected to the air inlet installed at the air pump 13. Specifically, the air inlet pipe 15 is connected to the air source. The air inlet pipe 15 can be set as a hose to facilitate connection and not be affected when the movable plate 4 moves. Then start the air pump 13, and the air pump 13 will let the gas from the air source enter the pressure vessel 2 through the air outlet pipe 14 for testing.

[0033] Working principle: When the pressure vessel 2 is pressure tested, the second motor 27 is first started, and the two support half rings 19 are moved relative to each other and fit against the outer wall of the outlet pipe 14 through the second motor 27. After the fitting is completed, the first motor 7 is started to drive the movable plate 4 to move on the pressure test plate 1, and move until the outlet pipe 14 is inserted into the pressure test port of the pressure vessel 2 through the connecting tube 3. At this time, the side of the support half ring 19 fits against the side of the connecting tube 3, and the rubber sealing ring of the support half ring 19 is squeezed in the annular gap between the support half ring 19 and the connecting tube 3 for sealing. After the movement is completed, the electric push rod 28 is started again to move the sealing ring to fit against the side of the two support half rings 19, and the gap between the two support half rings 19 is fitted. Finally, the air pump 13 is started to pass the gas into the pressure vessel 2 through the inlet pipe 15 and the outlet pipe 14 to test the pressure of the pressure vessel 2.

[0034] Example 2: Example 2 of the present application is supplemented with Example 1 to provide a pressure testing method for a pressure vessel 2, comprising the following steps: Step 1: Installation: Start the first motor 7. The output end of the first motor 7 drives the reciprocating screw 6 to rotate between the two mounting plates 1 5, thereby moving the screw nut 8 on the reciprocating screw 6, and at the same time drives the connecting plate 12 and the movable frame forward, and at the same time drives the other connecting plate 12 to move, drives the limit block 11 to slide on the limit rod 10, drives the air pump 13 and the air outlet pipe 14 to move forward, and moves until the air outlet pipe 14 is inserted into the connecting tube 3 and the pressure test port of the pressure vessel 2; Step 2, support, when the moving plate 4 moves forward, start the second motor 27, the second motor 27 drives one of the rotating shafts 21 to rotate, the rotating shaft 21 drives one of the driving gears 22 to rotate, the driving gear 22 drives the rack 17 to slide on the top of the sliding frame 16, thereby driving the pushing frame 18 and the supporting half ring 19 to move forward to fit the outlet pipe 14, and the rotating shaft 21 drives the bevel gear 2 26 to rotate, the bevel gear 2 26 drives one of the bevel gears 1 25 to rotate, the bevel gear 1 25 drives the transmission shaft 24 to rotate, and the transmission shaft 24 drives the bevel gear 1 25 at the other end to rotate, and the bevel gear 1 25 at the other end rotates. Gear 1 25 drives another bevel gear 2 26 to rotate, and similarly drives another push frame 18 and support half ring 19 to move forward. The two sides of the two support half rings 19 fit together and also fit against the outer wall of the outlet pipe 14. Then, driven by the connecting frame 23, the sliding frame 16 moves forward synchronously until the side surfaces of the support half rings 19 and the side surfaces of the connecting tube 3 are at the same horizontal position. When the support half rings 19 move forward and fit against the side surfaces of the connecting tube 3, the rubber sealing ring squeezes into the connecting tube 3, sealing the annular gap between the connecting tube 3 and the support half rings 19 to maintain sealing. Step 3: Blocking: There will be a gap between the two supporting half rings 19 after they are attached. Then, by starting the electric push rod 28, the electric push rod 28 drives the sealing ring 29 to slide on the outer wall of the outlet pipe 14, and then attaches to the sides of the two supporting half rings 19 to block the gap; Step 4: pressure test: connect the air inlet pipe 15 to the air source, and use the air pump 13 to pass the gas through the air inlet pipe 15 into the pressure vessel 2 for pressure test.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and are not limiting. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present disclosure, and all of these should be included in the scope of the claims of the present disclosure.

Claims

1. A pressure test device for a pressure vessel, comprising a pressure test plate (1), wherein a pressure vessel (2) is mounted on the top of the pressure test plate (1) during pressure testing, and characterized in that: The top of the pressure test plate (1) is provided with two slide grooves, and the side of the pressure vessel (2) is provided with a pressure test port, and further comprises: A connecting tube (3), the connecting tube (3) being welded and fixedly mounted on the pressure test port of the pressure vessel (2); A movable plate (4), the movable plate (4) being slidably mounted in a slide groove of the pressure test plate (1); A pushing assembly, the pushing assembly being arranged on a side of the pressure test plate (1), the pressure test assembly being arranged on the pushing assembly via the movable plate (4), and the pushing assembly being used to push the pressure test assembly into the pressure vessel (2); A support assembly, wherein two support assemblies are provided, and the support assemblies are provided on the pushing assembly and are used to support the pressure test assembly after the pressure test assembly is pushed into the pressure vessel (2); A sealing component is arranged on the supporting component and is used for sealing the gap.

2. A pressure testing device for a pressure vessel according to claim 1, characterized in that: The pushing component includes: Mounting plate one (5), two mounting plates one (5) are provided, and both mounting plates one (5) are fixedly mounted on one side of the pressure test plate (1); A reciprocating screw (6), the reciprocating screw (6) being rotatably mounted between the two mounting plates (5); a first motor (7), the first motor (7) being mounted on a side surface of one of the mounting plates (5), and an output end of the first motor (7) being coaxially connected to the reciprocating screw (6); A screw nut (8), the screw nut (8) being mounted on the reciprocating screw (6); A limit assembly is provided on the other side of the pressure test plate (1).

3. A pressure testing device for a pressure vessel according to claim 2, characterized in that: The limiting component includes: Mounting plate 2 (9), there are two mounting plates 2 (9), and both mounting plates 2 (9) are fixedly mounted on the other side of the pressure test plate (1); A limiting rod (10), wherein the limiting rod (10) is fixedly mounted between the two second mounting plates (9); A limit block (11), wherein the limit block (11) is slidably mounted on the limit rod (10); A connecting plate (12), wherein two connecting plates (12) are provided, and the two connecting plates (12) are fixedly mounted on the sides of the lead screw nut (8) and the limit block (11), respectively, and the movable plate (4) is fixedly mounted between the two connecting plates (12).

4. A pressure testing device for a pressure vessel according to claim 3, characterized in that: The pressure test assembly comprises: An air pump (13), the air pump (13) being mounted on the top of the movable plate (4); An air outlet pipe (14), the air outlet pipe (14) being connected to an air outlet installed on the air pump (13); An air intake pipe (15) is connected to an air intake port installed on the air pump (13).

5. A pressure testing device for a pressure vessel according to claim 4, characterized in that: The support assembly comprises: A sliding frame (16), wherein the sliding frame (16) is slidably mounted in a sliding groove of the pressure test plate (1), and a sliding groove is provided at the top end of the sliding frame (16); a rack (17), the rack (17) being slidably mounted in a slide groove at the top end of the sliding frame (16); A pushing frame (18), wherein the pushing frame (18) is fixedly mounted on the rack (17); A supporting half ring (19), wherein the supporting half ring (19) is fixedly mounted on a side surface of the pushing frame (18), and a rubber sealing ring is mounted on the side surface of the supporting half ring (19); A support frame (20), the support frame (20) being fixedly mounted on the bottom end of the sliding frame (16); A rotating shaft (21), the rotating shaft (21) being rotatably mounted on the support frame (20); a driving gear (22), wherein the driving gear (22) is fixedly mounted on one end of the rotating shaft (21), and the driving gear (22) is meshed with the rack (17); A transmission assembly is provided, wherein the transmission assembly is provided on the movable plate (4).

6. A pressure testing device for a pressure vessel according to claim 5, characterized in that: The transmission assembly comprises: A connecting frame (23), the connecting frame (23) being fixedly mounted on the sides of the movable plate (4) and the sliding frame (16); A transmission shaft (24), the transmission shaft (24) being rotatably mounted on the connecting frame (23); Bevel gear one (25), two bevel gears (25) are provided, and the two bevel gears (25) are fixedly mounted on both ends of the transmission shaft (24); Bevel gear 2 (26), two bevel gears 2 (26) are provided, the two bevel gears 2 (26) are respectively fixedly mounted on the other ends of the two rotating shafts (21), and the two bevel gears 1 (25) are respectively meshed with the two bevel gears 2 (26); A second motor (27), the second motor (27) is mounted on a side of one of the support frames (20) via a placement frame, and the second motor (27) is coaxially connected to one of the rotating shafts (21).

7. A pressure testing device for a pressure vessel according to claim 6, characterized in that: The blocking component comprises: An electric push rod (28), wherein two electric push rods (28) are provided, and the two electric push rods (28) are respectively mounted on the sides of the two pushing frames (18); A sealing ring (29) is slidably mounted on the outer wall of the air outlet pipe (14) via a sliding ring, and the sealing ring (29) is fixedly mounted on the output ends of the two electric push rods (28) via two connecting rods.

8. A pressure testing device for a pressure vessel according to claim 7, characterized in that: A semicircular groove is provided on the supporting semi-ring (19), and the curvature of the inner wall of the semicircular groove is consistent with the curvature of the outer wall of the outlet pipe (14).

9. A pressure testing device for a pressure vessel according to claim 8, characterized in that: The sum of the side areas of the two supporting half rings (19) is consistent with the side area of the connecting cylinder (3).

10. A pressure testing method for a pressure vessel, using the pressure testing device for a pressure vessel according to claim 9, characterized in that: The following steps are involved: S1. Installation, by starting the first motor (7), the output end of the first motor (7) drives the reciprocating screw (6) to rotate between the two mounting plates (5), thereby moving the screw nut (8) on the reciprocating screw (6), and at the same time driving the connecting plate (12) and the moving frame forward, and at the same time driving the other connecting plate (12) to move, driving the limit block (11) to slide on the limit rod (10), driving the air pump (13) and the air outlet pipe (14) to move forward, and moving the air outlet pipe (14) to be inserted into the connecting tube (3) and the pressure test port of the pressure vessel (2); S2, support, when the moving plate (4) moves forward, start the second motor (27), the second motor (27) drives one of the rotating shafts (21) to rotate, the rotating shaft (21) drives one of the driving gears (22) to rotate, the driving gear (22) drives the rack (17) to slide on the top of the sliding frame (16), thereby driving the push frame (18) and the supporting half ring (19) to move forward to fit the outlet pipe (14), and the rotating shaft (21) drives the bevel gear 2 (26) to rotate, the bevel gear 2 (26) drives one of the bevel gears 1 (25) to rotate, the bevel gear 1 (25) drives the transmission shaft (24) to rotate, and the transmission shaft (24) drives the bevel gear 1 (25) at the other end to rotate. ) rotates, bevel gear 1 (25) drives another bevel gear 2 (26) to rotate, and then similarly drives another push frame (18) and the support half ring (19) to move forward, and the two sides of the two support half rings (19) fit together and also fit on the outer wall of the outlet pipe (14), and then, driven by the connecting frame (23), the sliding frame (16) moves forward synchronously until the side of the support half ring (19) and the side of the connecting tube (3) are at the same horizontal position, and when the support half ring (19) moves forward and fits on the side of the connecting tube (3), the rubber sealing ring squeezes into the connecting tube (3), and the annular gap between the connecting tube (3) and the support half ring (19) is blocked to maintain sealing; S3, blocking, when there is a gap between the two supporting half rings (19) after being fitted together, the electric push rod (28) is started, and the electric push rod (28) drives the sealing ring (29) to slide on the outer wall of the outlet pipe (14), and then fits on the side surfaces of the two supporting half rings (19) to block the gap; S4, pressure test, connect the air inlet pipe (15) to the air source, and use the air pump (13) to pass the gas through the air inlet pipe (15) into the pressure vessel (2) for pressure test.

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