A clamping device for pressure vessel pressure test

Abstract

The utility model relates to a kind of clamping devices for pressure vessel pressure resistance inspection, including the box of top open, the limit frame is arranged in the box, the front side inner wall of the limit frame is fixed with first electric push rod, the rear end telescopic shaft of first electric push rod is fixed with a block, first electric push rod drives block to stretch out backwards, and cooperate the rear side inner wall of limit frame to hold the front and rear ends of pressure vessel.This utility model places pressure vessel in limit frame, by the rear end telescopic shaft of first electric push rod driving first electric push rod stretches out backwards, to drive block to stretch out backwards, when block contacts pressure vessel and continues to stretch out backwards and pushes pressure vessel to move backwards, so that the rear end of pressure vessel is in contact with the rear side inner wall of limit frame, by block and the rear side inner wall of limit frame hold the front and rear ends of pressure vessel, and different sizes of pressure vessel can be adapted.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for pressure vessel pressure resistance testing, and in particular to a clamping device for pressure vessel pressure resistance testing. Background Technology

[0002] Pressure vessels are widely used in industrial production and daily life, ranging from large gas storage tanks in factories to pressure cookers in homes. These vessels withstand pressure during use, and their safety directly impacts people's lives and property. Therefore, rigorous pressure resistance testing is crucial for ensuring their safe use. Some existing devices are not stable enough when securing pressure vessels, causing them to shake during testing. This not only affects the accuracy of test results but may also pose safety hazards. Traditional devices typically use simple clamping methods, which are difficult to adapt to pressure vessels of different sizes. Utility Model Content

[0003] The purpose of this invention is to provide a clamping device for pressure vessel pressure resistance testing, which can adapt to pressure vessels of different sizes.

[0004] The technical solution of this utility model:

[0005] A clamping device for pressure resistance testing of pressure vessels includes a box with an open top. A limiting frame is provided inside the box. A first electric push rod is fixed on the front inner wall of the limiting frame. A stop block is fixed to the rear telescopic shaft of the first electric push rod. The first electric push rod drives the stop block to extend backward and cooperate with the rear inner wall of the limiting frame to clamp the front and rear ends of the pressure vessel.

[0006] Furthermore, guide blocks are fixed at both ends of the abutment, and guide grooves for sliding of the guide blocks are provided on the left and right inner sides of the limiting frame.

[0007] Furthermore, a crossbar is fixed within the limiting frame between the first electric push rod and the stop block, and the rear telescopic shaft of the first electric push rod passes through the crossbar and is connected to the crossbar via a straight bearing.

[0008] Furthermore, the bottom of the limiting frame has four raising blocks.

[0009] Furthermore, a portal frame is fixed at the top of the limiting frame above the pressure vessel, and a threaded rod is threadedly connected to the crossbar of the portal frame. The lower end of the threaded rod penetrates the crossbar of the portal frame and is connected to a limiting block by a bearing.

[0010] Furthermore, the top of the threaded rod has a hexagonal groove.

[0011] Furthermore, a lifting plate is provided above the housing, and the bottom left and right sides of the lifting plate are fixedly connected to the upper telescopic shaft of the second electric push rod; two connecting plates are fixedly located at the bottom of the lifting plate between the upper telescopic shafts of the two second electric push rods, and the lower end of the connecting plates is fixedly connected to the limiting frame.

[0012] Furthermore, the pressure vessel has an air pipe.

[0013] The beneficial effects of this utility model are:

[0014] (1) The pressure vessel is placed inside the limiting frame. The rear end of the first electric push rod is driven to extend backward by the first electric push rod, thereby causing the abutment to extend backward. When the abutment contacts the pressure vessel, it continues to extend backward and push the pressure vessel to move backward, so that the rear end of the pressure vessel contacts the rear inner wall of the limiting frame. The front and rear ends of the pressure vessel are clamped by the abutment and the rear inner wall of the limiting frame, and it can adapt to pressure vessels of different sizes.

[0015] (2) The rotating threaded rod drives the limiting block to move downward and abut against the top of the pressure vessel, clamping the pressure vessel in the vertical direction, further limiting the pressure vessel in the box, preventing the pressure vessel from shaking unstablely during the test, and improving the applicability of this device.

[0016] (3) After the test is completed, the first electric push rod drives the block to move forward, and then the threaded rod is rotated to drive the limit block to move upward, thus canceling the clamping of the pressure vessel; then the two second electric push rods drive the upper telescopic shafts of the two second electric push rods to rise, thereby driving the lifting plate to rise, the lifting plate to rise, the connecting plate to rise, and the connecting plate to rise, thus driving the limit frame to rise, so that the pressure vessel can be taken out.

[0017] This invention can be adapted to pressure vessels of different sizes. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the box.

[0020] Figure 3 This is a schematic diagram of the limiting frame.

[0021] Figure 4 This is a structural schematic diagram of the limiting frame (without a pressure vessel).

[0022] In the diagram: 1. Box body; 2. Limiting frame; 3. First electric push rod; 4. Rear telescopic shaft; 5. Guide groove; 6. Guide block; 7. Abutment block; 8. Gantry frame; 9. Limiting block; 10. Threaded rod; 11. Pressure vessel; 12. Air pipe; 13. Linear bearing; 14. Second electric push rod; 15. Lifting plate; 16. Connecting plate; 17. Angled angle; 18. Hexagonal groove; 19. Crossbar; 20. Elevating block. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figures 1-4 As shown, this utility model provides a first embodiment of a clamping device for pressure vessel pressure resistance testing, including a box 1 with an open top, a limiting frame 2 provided inside the box 1, a first electric push rod 3 fixed on the front inner wall of the limiting frame 2, and a stop block 7 fixed on the rear telescopic shaft 4 of the first electric push rod 3. The first electric push rod 3 drives the stop block 7 to extend backward, and cooperates with the rear inner wall of the limiting frame 2 to clamp the front and rear ends of the pressure vessel 11.

[0025] The pressure vessel 11 is placed inside the limiting frame 2. The first electric push rod 3 drives the rear telescopic shaft 4 of the first electric push rod 3 to extend backward, thereby causing the stop block 7 to extend backward. When the stop block 7 contacts the pressure vessel 11, it continues to extend backward, pushing the pressure vessel 11 to move backward, so that the rear end of the pressure vessel 11 contacts the rear inner wall of the limiting frame 2. The front and rear ends of the pressure vessel 11 are clamped by the stop block 7 and the rear inner wall of the limiting frame 2, and it can adapt to pressure vessels 11 of different sizes.

[0026] Based on the first embodiment, this utility model provides a second embodiment of a clamping device for pressure vessel pressure resistance testing. Guide blocks 6 are fixed at both ends of the abutment 7, and guide grooves 5 for sliding of the guide blocks 6 are opened on the left and right inner sides of the limiting frame 2. During the movement of the abutment 7, the guide blocks 6 also slide in the guide grooves 5, which can guide the abutment 7.

[0027] Based on any of the above embodiments, this utility model provides a third embodiment of a clamping device for pressure vessel pressure resistance testing. A crossbar 19 is fixed within the limiting frame 2 between the first electric push rod 3 and the stop block 7. The rear telescopic shaft 4 of the first electric push rod 3 passes through the crossbar 19 and is connected to the crossbar 19 via a linear bearing 13. The crossbar 19 provides support for the rear telescopic shaft 4 of the first electric push rod 3, and the linear bearing 13 facilitates the extension and retraction of the rear telescopic shaft 4 of the first electric push rod 3.

[0028] Based on any of the above embodiments, this utility model provides a fourth embodiment of a clamping device for pressure vessel pressure resistance testing. The bottom of the limiting frame 2 has four raising blocks 20. The raising blocks 20 can increase the height of the limiting frame 2, so that the rear inner wall of the limiting frame 2 and the abutment block 7 can be clamped in the vertical direction close to the middle position of the pressure vessel 11, which can better clamp the pressure vessel 11.

[0029] Based on any of the above embodiments, this utility model provides a fifth embodiment of a clamping device for pressure vessel pressure resistance testing. A portal frame 8 is fixed at the top of the limiting frame 2 above the pressure vessel 11. A threaded rod 10 is threadedly connected to the crossbar of the portal frame 8. The lower end of the threaded rod 10 penetrates the crossbar of the portal frame 8 and is bearing-connected to a limiting block 9. Rotating the threaded rod 10 causes the limiting block 9 to move downwards and abut against the top of the pressure vessel 11, clamping the pressure vessel 11 vertically and further limiting the pressure vessel 11 within the housing 1, preventing unstable shaking of the pressure vessel 11 during testing, and improving the applicability of this device.

[0030] Based on the fifth embodiment, this utility model provides a sixth embodiment of a clamping device for pressure vessel pressure resistance testing. The pressure vessel 11 is a gas cylinder, and the bottom of the limiting block 9 is provided with an angled 17, which can be adapted to the end face of the gas cylinder and can better clamp the gas cylinder.

[0031] Based on the fifth embodiment, this utility model provides a seventh embodiment of a clamping device for pressure vessel pressure resistance testing. The top of the threaded rod 10 has a hexagonal groove 18, and a hexagonal tool is installed in the hexagonal groove 18 to rotate the threaded rod 10 by means of force.

[0032] Based on any of the above embodiments, this utility model provides an eighth embodiment of a clamping device for pressure vessel pressure resistance testing. A lifting plate 15 is provided above the housing 1. The bottom left and right sides of the lifting plate 15 are fixedly connected to the upper telescopic shafts of the second electric push rods 14. Two connecting plates 16 are fixedly located between the upper telescopic shafts of the two second electric push rods 14 at the bottom of the lifting plate 15. The lower ends of the connecting plates 16 are fixedly connected to the limiting frame 2.

[0033] After the test is completed, the first electric push rod 3 drives the stop block 7 to move forward, and then the threaded rod 10 rotates to drive the limit block 9 to move upward, thus releasing the clamping of the pressure vessel 11; then the two second electric push rods 14 drive the upper telescopic shafts of the two second electric push rods 14 to rise, thereby driving the lifting plate 15 to rise, the lifting plate 15 to rise, the connecting plate 16 to rise, and the connecting plate 16 to rise, thereby driving the limit frame 2 to rise, so as to facilitate the removal of the pressure vessel 11.

[0034] Based on any of the above embodiments, this utility model provides a ninth embodiment of a clamping device for pressure vessel pressure resistance testing, wherein the pressure vessel 11 has an air pipe 12. Gas is injected into the pressure vessel 11 through the air pipe 12 to test the pressure, and a certain amount of water is injected into the chamber 1 during the test to test the airtightness of the pressure vessel 11.

[0035] The above description is only a preferred embodiment of the present utility model and should not be construed as a limitation of this application. All equivalent changes and modifications made within the scope of the patent application of the present utility model should be included in the scope of the present utility model.

Claims

1. A clamping device for pressure vessel pressure resistance testing, characterized in that, The pressure vessel includes an open-top box with a limiting frame inside. A first electric push rod is fixed to the front inner wall of the limiting frame. A stop block is fixed to the rear telescopic shaft of the first electric push rod. The first electric push rod drives the stop block to extend backward and, together with the rear inner wall of the limiting frame, clamps the front and rear ends of the pressure vessel.

2. The clamping device for pressure vessel pressure resistance testing according to claim 1, characterized in that, Guide blocks are fixed at both ends of the abutment, and guide grooves for sliding of the guide blocks are provided on the left and right inner sides of the limiting frame.

3. The clamping device for pressure vessel pressure resistance testing according to claim 1, characterized in that, A crossbar is fixed within the limiting frame between the first electric push rod and the stop block. The rear telescopic shaft of the first electric push rod passes through the crossbar and is connected to the crossbar via a straight bearing.

4. The clamping device for pressure vessel pressure resistance testing according to claim 1, characterized in that, The bottom of the limiting frame has four shims.

5. A clamping device for pressure vessel pressure resistance testing according to claim 1, characterized in that, A portal frame is fixed at the top of the limiting frame above the pressure vessel. A threaded rod is threadedly connected to the crossbar of the portal frame. The lower end of the threaded rod penetrates the crossbar of the portal frame and is connected to a limiting block by a bearing.

6. A clamping device for pressure vessel pressure resistance testing according to claim 5, characterized in that, The top of the threaded rod has a hexagonal groove.

7. A clamping device for pressure vessel pressure resistance testing according to claim 1, characterized in that, A lifting plate is provided above the box body. The bottom left and right sides of the lifting plate are fixedly connected to the upper telescopic shaft of the second electric push rod. Two connecting plates are fixed at the bottom of the lifting plate between the upper telescopic shafts of the two second electric push rods. The lower end of the connecting plates is fixedly connected to the limiting frame.

8. A clamping device for pressure vessel pressure resistance testing according to claim 1, characterized in that, The pressure vessel has an air pipe.

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