Pressure test device for pressure vessel production

Abstract

The utility model discloses a pressure test device for pressure vessel production, belongs to the technical field of pressure vessel production, and aims to solve the problem that the accuracy of a test result is affected as the pressure cannot be easily and effectively clamped and fixed, the pressure test device comprises a workbench, the bottom of the workbench is fixedly connected with a plurality of supporting columns, and the supporting columns are arranged on the workbench. The top of the workbench is fixedly connected with two convex frames, the tops of the two convex frames are both rotationally connected with threaded rods, the trapezoidal push block is matched with the clamping mechanism, the rotating plate rotates the threaded rods to drive the trapezoidal push block to descend, and the two guide wheels are driven to roll towards the outer side while the trapezoidal push block descends; and two first guide rods drive first arc-shaped clamping plates to move inwards, so that two first guide rods rotate outwards, two second guide rods drive second arc-shaped clamping plates to move inwards, the two second arc-shaped clamping plates are matched with the first arc-shaped clamping plates, the tank-shaped pressure container is clamped and fixed in three directions, the pressure container is prevented from shaking, and the test detection accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure vessel production, and in particular relates to a pressure testing device for pressure vessel production. Background Art

[0002] A pressure vessel is a closed container used to withstand internal pressure. It is usually used to store, transport or process liquids, gases or steam. They are widely used in various industrial fields, including chemical, petroleum, natural gas, food processing, pharmaceutical, energy and other industries. After the pressure vessel is produced, the gas inside the pressure vessel needs to be tested to understand the gas pressure value that the container can withstand. This can ensure the safety of the pressure vessel during use and avoid the explosion of the pressure vessel due to high gas pressure during use.

[0003] The prior art discloses a pressure test device for pressure vessel production with patent announcement number CN214334537U. The patent includes a working joint, a fixing mechanism and a pressure test mechanism installed on a workbench. The fixing mechanism includes fixing plates welded on both sides of the top surface of the working joint and two fixing frames symmetrically arranged between the two fixing plates. A fixing pipe is fixedly inserted at the center position of the opposite side of the two fixing plates. A telescopic rod is slidably inserted at one end of the two fixing tubes extending out of the fixing plate. The two fixing frames are both U-shaped structures, and the center position of the opposite side of the two fixing frames is welded and fixed with the telescopic rod. The device can provide pressure relief protection for the pressure test device, avoid damage to the pressure test device caused by excessive pressure, and improve safety; however, there are still the following deficiencies in actual use: from a practical point of view, the pressure vessel is usually a tank structure, and the surface of the tank is an arc shape. The square fixing frame of the device cannot effectively clamp and fix the tank structure. At the same time, the clamping force provided by the spring is easy to cause the pressure vessel to shake during the test, affecting the accuracy of the test results.

[0004] Therefore, there is a need for a pressure testing device for pressure vessel production to solve the problem in the prior art that the pressure cannot be effectively clamped and fixed, which affects the accuracy of the test results. Utility Model Content

[0005] The purpose of the utility model is to provide a pressure testing device for pressure vessel production to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure testing device for pressure vessel production, comprising a workbench, a plurality of supporting columns are fixedly connected to the bottom of the workbench, two convex frames are fixedly connected to the top of the workbench, the tops of the two convex frames are rotatably connected to threaded rods, the tops of the two threaded rods are fixedly connected to rotating plates, the bottoms of the two threaded rods are rotatably connected to trapezoidal push blocks, the bottoms of the two trapezoidal push blocks are both installed with a first arc-shaped clamping plate, the tops of the two trapezoidal push blocks are fixedly connected to two limit rods, and clamping mechanisms are arranged inside the two convex frames, an air pump is fixedly connected to the top of the workbench, a gas delivery pipe is fixedly connected to the front end of the gas delivery pipe, a gas delivery hose is fixedly connected to the front end of the gas delivery hose, a gas nozzle is fixedly connected to the top of the gas delivery pipe, and a pressure gauge and an electromagnetic pressure relief valve are installed on the top of the gas delivery pipe.

[0007] It should be noted in the solution that the bottoms of the plurality of support columns are fixedly connected with shock-absorbing sleeves.

[0008] It is further worth noting that a thread groove corresponding to the threaded rod and a through hole corresponding to the limiting rod are provided on the top of the convex frame.

[0009] It should be further explained that the clamping mechanism includes a plurality of fixed blocks fixedly connected to the inner wall of the convex frame, a rotating shaft is rotatably connected between every two corresponding fixed blocks, the outer walls of the two rotating shafts are fixedly connected to pipe sleeves, the tops of the two pipe sleeves are fixedly connected to a first guide rod, the inner sides of the two first guide rods are installed with guide wheels corresponding to the trapezoidal push blocks, the bottoms of the two pipe sleeves are fixedly connected to a second guide rod, and the inner sides of the two second guide rods are installed with a second arc-shaped clamping plate.

[0010] As a preferred embodiment, the two guide wheels are both rollingly fitted to the outer walls on both sides of the trapezoidal push block.

[0011] As a preferred implementation, the first arc-shaped clamping plate and the second arc-shaped clamping plate are both installed through a universal joint, and the inner wall of the first arc-shaped clamping plate and the inner wall of the second arc-shaped clamping plate are both fixedly connected with an anti-slip pad.

[0012] As a preferred implementation, the electromagnetic pressure relief valve is connected to the gas transmission hard pipe.

[0013] Compared with the prior art, the pressure test device for pressure vessel production provided by the utility model has at least the following beneficial effects:

[0014] (1) By setting up a trapezoidal push block and a clamping mechanism to cooperate, the rotating plate rotates the threaded rod to drive the trapezoidal push block to descend. When the trapezoidal push block descends, it drives the two guide wheels to roll outward, so that the two first guide rods rotate outward, and the two second guide rods drive the second arc-shaped clamping plates to move inward, so that the two second arc-shaped clamping plates cooperate with the first arc-shaped clamping plates to clamp and fix the tank-shaped pressure vessel from three directions, thereby preventing the pressure vessel from shaking and improving the accuracy of the test detection.

[0015] (2) By setting up an electromagnetic pressure relief valve, when the pressure in the pressure vessel exceeds the preset value, the electromagnetic pressure relief valve automatically opens to release excessive pressure, preventing the pressure vessel from bursting or other dangerous situations, and ensuring the safety of the test work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model from a third viewing angle;

[0019] Figure 4 It is a structural schematic diagram of the clamping mechanism of the utility model.

[0020] In the figure: 1. workbench; 2. support column; 3. convex frame; 4. threaded rod; 5. rotating plate; 6. trapezoidal push block; 7. first arc-shaped clamping plate; 8. limit rod; 9. clamping mechanism; 901. fixed block; 902. rotating shaft; 903. pipe sleeve; 904. first guide rod; 905. guide wheel; 906. second guide rod; 907. second arc-shaped clamping plate; 10. air pump; 11. gas pipe; 12. gas hose; 13. gas nozzle; 14. pressure gauge; 15. electromagnetic pressure relief valve. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] See also Figure 1-4The utility model provides a pressure testing device for pressure vessel production, including a workbench 1, a plurality of supporting columns 2 are fixedly connected to the bottom of the workbench 1, two convex frames 3 are fixedly connected to the top of the workbench 1, threaded rods 4 are rotatably connected to the tops of the two convex frames 3, rotating plates 5 are fixedly connected to the tops of the two threaded rods 4, trapezoidal push blocks 6 are rotatably connected to the bottoms of the two threaded rods 4, first arc-shaped clamping plates 7 are installed at the bottoms of the two trapezoidal push blocks 6, two limit rods 8 are fixedly connected to the tops of the two trapezoidal push blocks 6, clamping mechanisms 9 are arranged inside the two convex frames 3, an air pump 10 is fixedly connected to the top of the workbench 1, a gas delivery hard pipe 11 is fixedly connected to the front end of the air pump 10, a gas delivery hose 12 is fixedly connected to the front end of the gas delivery hard pipe 11, a gas nozzle 13 is fixedly connected to the front end of the gas delivery hose 12, and a pressure gauge 14 and an electromagnetic pressure relief valve 15 are installed on the top of the gas delivery hard pipe 11.

[0023] Further as Figure 4 As shown, it is worth explaining in detail that the clamping mechanism 9 includes a plurality of fixed blocks 901 fixedly connected to the inner wall of the convex frame 3, and a rotating shaft 902 is rotatably connected between every two corresponding fixed blocks 901, and the outer walls of the two rotating shafts 902 are fixedly connected to pipe sleeves 903, and the tops of the two pipe sleeves 903 are fixedly connected to first guide rods 904, and the inner sides of the two first guide rods 904 are installed with guide wheels 905 corresponding to the trapezoidal push blocks 6, and the bottoms of the two pipe sleeves 903 are fixedly connected to second guide rods 906, and the inner sides of the two second guide rods 906 are installed with second arc-shaped clamps 907. By setting the clamping mechanism 9, the two second arc-shaped clamps 907 cooperate with the first arc-shaped clamp 7 to clamp and fix the tank-shaped pressure vessel from three directions, thereby avoiding shaking of the pressure vessel and improving the accuracy of the test detection.

[0024] Further as Figure 4 As shown, it is worth explaining in detail that the two guide wheels 905 are both rollingly fitted to the outer walls of the trapezoidal push block 6, ensuring that the movement of the trapezoidal push block 6 can drive the two guide wheels 905 to move outward at the same time, thereby providing power for the movement of the arc clamping plate 907.

[0025] Further as Figure 4 As shown, it is worth explaining in detail that the first arc-shaped clamp plate 7 and the second arc-shaped clamp plate 907 are both installed through universal joints, and the inner wall of the first arc-shaped clamp plate 7 and the inner wall of the second arc-shaped clamp plate 907 are fixedly connected with anti-slip pads. Under the action of the universal joint, the first arc-shaped clamp plate 7 and the second arc-shaped clamp plate 907 can fit the outer wall of the tank-shaped pressure vessel more fully, and the pressure vessel can be clamped more fully. At the same time, the anti-slip pad can increase the friction between the pressure vessel and the clamp plate, and further improve the stability of the clamping.

[0026] According to the above working process, it can be known that by setting the clamping mechanism 9, the two second arc-shaped clamping plates 907 and the first arc-shaped clamping plate 7 cooperate with each other to clamp and fix the can-shaped pressure vessel from three directions, thereby preventing the pressure vessel from shaking and improving the accuracy of the test detection.

[0027] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that the bottoms of the multiple support columns 2 are fixedly connected with shock-absorbing sleeves, which play a role in buffering and shock absorption, so that the workbench 1 always maintains a stable state and ensures the stability of the test.

[0028] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that a threaded groove corresponding to the threaded rod 4 and a through hole corresponding to the limiting rod 8 are provided on the top of the convex frame 3. The threaded groove cooperates with the threaded rod 4 to ensure that the threaded rod 4 can drive the trapezoidal push block 6 to rise and fall while rotating. The through hole cooperates with the limiting rod 8 to limit and guide the rising and falling of the trapezoidal push block 6, making the rising and falling of the trapezoidal push block 6 more stable.

[0029] Further as Figure 1 and Figure 3 As shown, it is worth explaining in detail that the electromagnetic pressure relief valve 15 is connected to the gas transmission hard pipe 11. When the pressure in the pressure vessel exceeds the preset value, the electromagnetic pressure relief valve 15 automatically opens to release excessive pressure to prevent the pressure vessel from bursting or other dangerous situations.

[0030] This solution has the following working process: in actual use, the pressure vessel to be tested is placed on the top of the workbench 1, and then the rotating plate 5 rotates the threaded rod 4 to drive the trapezoidal push block 6 to descend. While the trapezoidal push block 6 descends, it drives the two guide wheels 905 to roll outward, so that the two first guide rods 904 rotate outward, and the two second guide rods 906 drive the second arc-shaped clamping plate 907 to move inward, so that the two second arc-shaped clamping plates 907 cooperate with the first arc-shaped clamping plate 7 to clamp and fix the can-shaped pressure vessel from three directions. After the pressure vessel is firmly positioned, the air nozzle 13 is inserted into the inner wall of the through hole of the pressure vessel, and the air pump 10 is turned on for pressurization. The pressure gauge 14 can monitor the pressure of the pressure vessel. When the pressure inside the pressure vessel is too high, the electromagnetic pressure relief valve 15 automatically opens to relieve the pressure.

[0031] In summary: by setting the clamping mechanism 9, the two second arc-shaped clamping plates 907 and the first arc-shaped clamping plate 7 cooperate with each other to clamp and fix the can-shaped pressure vessel from three directions, thereby preventing the pressure vessel from shaking and improving the accuracy of the test detection; by setting the electromagnetic pressure relief valve 15, when the pressure in the pressure vessel exceeds the preset value, the electromagnetic pressure relief valve 15 automatically opens to release excessive pressure, thereby preventing the pressure vessel from bursting or other dangerous situations, and ensuring the safe conduct of the test work.

Claims

1. A pressure testing device for pressure vessel production, comprising a workbench (1), characterized in that: The bottom of the workbench (1) is fixedly connected to a plurality of support columns (2); the top of the workbench (1) is fixedly connected to two convex frames (3); the tops of the two convex frames (3) are rotatably connected to threaded rods (4); the tops of the two threaded rods (4) are fixedly connected to rotating plates (5); the bottoms of the two threaded rods (4) are rotatably connected to trapezoidal push blocks (6); the bottoms of the two trapezoidal push blocks (6) are installed with first arc-shaped clamping plates (7); the tops of the two trapezoidal push blocks (6) are fixedly connected to the tops of the two convex frames (3); Two limit rods (8) are fixedly connected, and clamping mechanisms (9) are arranged inside the two convex frames (3). An air pump (10) is fixedly connected to the top of the workbench (1), and a gas delivery hard pipe (11) is fixedly connected to the front end of the air pump (10), and a gas delivery hose (12) is fixedly connected to the front end of the gas delivery hard pipe (11), and a gas nozzle (13) is fixedly connected to the front end of the gas delivery hose (12), and a pressure gauge (14) and an electromagnetic pressure relief valve (15) are installed on the top of the gas delivery hard pipe (11).

2. A pressure testing device for pressure vessel production according to claim 1, characterized in that: The bottoms of the plurality of support columns (2) are all fixedly connected with shock-absorbing sleeves.

3. A pressure testing device for pressure vessel production according to claim 1, characterized in that: The top of the convex frame (3) is provided with a thread groove corresponding to the threaded rod (4) and a through hole corresponding to the limiting rod (8).

4. A pressure testing device for pressure vessel production according to claim 1, characterized in that: The clamping mechanism (9) comprises a plurality of fixed blocks (901) fixedly connected to the inner wall of the convex frame (3), a rotating shaft (902) being rotatably connected between every two corresponding fixed blocks (901), a pipe sleeve (903) being fixedly connected to the outer wall of the two rotating shafts (902), a first guide rod (904) being fixedly connected to the top of the two pipe sleeves (903), a guide wheel (905) corresponding to the trapezoidal push block (6) being installed on the inner side of the two first guide rods (904), a second guide rod (906) being fixedly connected to the bottom of the two pipe sleeves (903), and a second arc-shaped clamping plate (907) being installed on the inner side of the two second guide rods (906).

5. A pressure testing device for pressure vessel production according to claim 4, characterized in that: The two guide wheels (905) are both rollingly fitted to the outer walls on both sides of the trapezoidal push block (6).

6. A pressure testing device for pressure vessel production according to claim 4, characterized in that: The first arc-shaped clamping plate (7) and the second arc-shaped clamping plate (907) are both mounted via a universal joint, and the inner wall of the first arc-shaped clamping plate (7) and the inner wall of the second arc-shaped clamping plate (907) are both fixedly connected with anti-slip pads.

7. A pressure testing device for pressure vessel production according to claim 1, characterized in that: The electromagnetic pressure relief valve (15) is in continuous connection with the gas transmission hard pipe (11).

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