Pressure vessel inspection device

Abstract

The utility model discloses a pressure vessel inspection device which comprises a detection box, a positioning assembly and a sealing assembly. A liquid changing valve pipe is arranged on the bottom surface of the detection box; the positioning assembly comprises an electric push rod, an arch frame, a side plate, a sliding rod, a lifting column, an extrusion block and a clamping block, the electric push rod drives the arch frame to descend and drives the extrusion block and the clamping block to press and fix the pressure container in multiple directions, and the clamping block is slidably connected with a sliding groove of the detection box through the sliding column to ensure that the motion trail is stable; the sealing assembly comprises a mounting shell, a first motor, a double-thread screw, a threaded sleeve, a connecting plate and a sealing plate, the first motor drives the double-thread screw to rotate and drives the sealing plate and a sealing gasket to cover an avoiding hole of the detection box, rapid sealing is achieved, multi-direction pressing of the pressure container is achieved through the positioning assembly, shaking and displacement are prevented, components are reduced, and the detection efficiency is improved. The operation process is simplified, the overall structure is compact, the operation is simple and convenient, the detection efficiency is improved, and the equipment cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure vessel pressure test technical field, concretely is a pressure vessel inspection device. BACKGROUND

[0002] Pressure vessel is a kind of closed equipment that stores gas or liquid and bears pressure, and it is a class of special equipment;According to relevant laws and regulations of the state, pressure vessel must be periodically inspected, and leakage test is an important item of periodic inspection, and for pressure vessel that is not allowed to leak in design, especially some low-temperature containers for storing flammable and explosive liquefied gas, leakage test should be carried out when necessary.

[0003] In the prior art, the pressure vessel pressure test device comprises a water storage tank, a spraying frame and a pressure vessel, the spraying frame delivers soapy water to the water storage tank, the pressure vessel filled with test gas is placed into the water storage tank, and whether the pressure vessel leaks is observed to complete pressure test.

[0004] Publication No. CN220670846U discloses a kind of pressure vessel pressure test device, relating to pressure vessel pressure test technical field, including support table, the top of support table is fixedly connected with horizontal support, and the left and right ends of horizontal support are all fixedly connected with vertical support, and the middle part of vertical support is screw-threaded with adjusting bolt, and the end of adjusting bolt is rotatably connected with connecting frame, and the bottom of connecting frame is fixedly connected with positioning frame, and the two ends of connecting frame are all fixedly connected with sliding block, and the two ends of horizontal support are all provided with sliding slot, and the inside of sliding slot is movably connected with the outside of sliding block, this device solves the problem that the pressure vessel pressure test device does not have the function of limiting pressure vessel, the pressure vessel is not stable, and the pressure vessel shakes back and forth with water pressure, not only does not have strong safety performance, but also cannot clearly distinguish whether pressure vessel leaks, but the patent still has the following problems in actual use process:

[0005] The above device extrudes the top of the container through the spraying frame, and the positioning frame and the connecting frame fix the side of the container, especially to avoid horizontal shaking of the container, the position of the positioning frame needs to be adjusted by screwing the bolt, and the operation needs to be carried out respectively, which is relatively troublesome, and if electric components are used to control, too many components are needed for fixing function, which increases equipment cost.

[0006] A pressure vessel inspection device is proposed to solve the problems mentioned above. Utility model content

[0007] The utility model discloses a pressure vessel inspection device to solve the above -mentioned device through the container top extrusion of spraying frame, and the positioning frame and the connecting frame carry out the side fixing to the container, especially to avoid container horizontal swing, need to adjust the position of positioning frame by screwing the bolt, and need to operate respectively, and the operation is more troublesome, if it is changed into electric component control, then will lead to the problem of fixed function needs too many components, increases equipment cost.

[0008] In order to realize the above object, the utility model provides the following technical scheme: a pressure vessel inspection device, including detection box, the bottom surface fixed mounting of detection box has liquid exchange valve pipe,

[0009] The inside of detection box is provided with positioning assembly, and the outside of detection box is provided with closed assembly symmetrically,

[0010] Among them, the positioning assembly includes electric push rod fixed to the top surface of detection box, the output end of electric push rod is fixedly connected with arch frame, and the bottom of both sides of arch frame is fixedly connected with side plate, the side plate is slidably connected with slide rod and lifting column, the bottom end of lifting column is fixedly connected with extrusion block, and the extrusion block is slidably connected with clamping block, the outside of clamping block is fixedly connected with slide post symmetrically, and the front and rear sides of detection box are symmetrically provided with sliding groove,

[0011] Among them, the side of clamping block close to extrusion block is provided with hidden groove, and the other side of clamping block is provided with extrusion inclined plane, and the side of extrusion block close to clamping block is fixedly connected with slide strip.

[0012] Preferably, the electric push rod is vertically arranged, the bottom end of the lifting column on the same side is fixedly connected with the same clamping block, a spring is sleeved on the outside of the lifting column, a limiting block is fixedly connected to the top end of the lifting column, the slide rod is fixedly connected with the inner wall of the detection box, and the inner bottom surface of the detection box is higher in the middle and lower on both sides.

[0013] Preferably, the top end of the lifting column is fixedly connected with the side plate, and the bottom end of the lifting column is fixedly connected with the clamping block.

[0014] Preferably, the hidden groove is slidably connected with the slide strip, and the slide post is slidably connected with the sliding groove.

[0015] Preferably, the closed assembly includes the avoidance hole opened on the front and rear sides of the detection box and the installation shell located below the avoidance hole, the inside of the installation shell is rotatably connected with the double-end screw rod, one end of the installation shell is fixedly connected with the first motor on the outside, the outside of the double-end screw rod is slidably sleeved with the threaded sleeve, the top of the threaded sleeve is fixedly connected with the connecting plate, and the top end of the connecting plate is fixedly connected with the closing plate.

[0016] Preferably, the mounting shell is fixed outside the detection box, the output end of the first motor extends into the mounting shell and is fixedly connected with the double-end screw rod, and the threaded sleeve is slidingly connected with the top of the mounting shell.

[0017] Preferably, the outer side of the sealing plate is fixedly connected with a sealing gasket, the sealing gasket is slidingly attached to the outer side of the detection box and can cover the outside of the avoiding hole.

[0018] Compared with the prior art, the pressure container inspection device has the advantages that: only one electric push rod is needed to realize multidirectional pressing, time and labor are saved, and the device has an overload protection function, ensuring the safety and reliability of the detection process.

[0019] 1. The arch frame is driven to descend by the electric push rod, the extrusion block and the clamping block are driven to press the pressure container in multiple directions, the slide bar slides in the dark groove, the slide column moves in the sliding groove, the stable movement of the clamping block is ensured, the extrusion inclined surface applies inclined upward pressure to the pressure container to prevent it from shaking left and right and moving up and down, and the spring contracts when overloaded to avoid excessive pressure on the pressure container. The assembly has a compact structure and is easy to operate, only one electric push rod is needed to realize multidirectional pressing, time and labor are saved, and the device has an overload protection function, ensuring the safety and reliability of the detection process.

[0020] 2. The double-end screw rod is driven to rotate by the first motor, the threaded sleeve and the connecting plate are moved, the sealing plate and the sealing gasket cover the avoiding hole, and rapid sealing is realized. This design avoids the complex operation of taking out the pressure container from the inside of the detection box in the traditional way and simplifies the process. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front structure schematic view of the utility model;

[0022] Figure 2 It is a front structure schematic view of the utility model;

[0023] Figure 3 It is an installation structure schematic view of the extrusion block and the clamping block;

[0024] Figure 4 It is an installation structure schematic view of the arch frame and the side plate;

[0025] Figure 5 It is Figure 2 It is an enlarged structure schematic view of position A in the middle.

[0026] In the figure: 1, detection box; 101, liquid exchange valve pipe; 2, positioning assembly; 201, electric push rod; 202, arch frame; 203, side plate; 204, sliding rod; 205, lifting column; 206, extrusion block; 2061, sliding bar; 207, clamping block; 2071, hidden groove; 2072, extrusion inclined surface; 208, sliding column; 209, sliding groove; 210, limiting block; 211, spring; 3, sealing assembly; 301, mounting shell; 302, first motor; 303, double-headed screw; 304, threaded sleeve; 305, connecting plate; 306, sealing plate; 307, sealing gasket; 308, avoidance hole. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Please refer to Figure 1 Figure 5 The utility model provides technical scheme: a pressure vessel inspection device, including detection box 1, the bottom surface fixed mounting of detection box 1 has liquid exchange valve pipe 101;Liquid exchange valve pipe 101 is used for connecting external liquid circulation system, it is convenient to replace or discharge liquid in the detection process, ensure the cleanliness of detection environment and the accuracy of pressure control, and can assist observation air leakage.

[0029] The inside of detection box 1 is provided with positioning assembly 2, and the outside of detection box 1 is symmetrically provided with sealing assembly 3.

[0030] The positioning assembly 2 includes an electric push rod 201 fixed to the top surface of the detection box 1, the output end of the electric push rod 201 is fixedly connected with an arch frame 202, the bottom of the two sides of the arch frame 202 is fixedly connected with side plates 203, the side plates 203 are slidingly connected with sliding rods 204 and lifting columns 205, the bottom end of the lifting column 205 is fixedly connected with an extrusion block 206, the extrusion block 206 is slidingly connected with a clamping block 207, the outside of the clamping block 207 is symmetrically fixedly connected with sliding columns 208, and sliding grooves 209 are symmetrically formed on the front and rear sides of the detection box 1. The electric push rod 201 serves as a power source to drive the arch frame 202 to move up and down, thereby driving the side plates 203 and the lifting columns 205 to move. The sliding connection design of the extrusion block 206 and the clamping block 207 enables the clamping block 207 to automatically adjust the position according to the shape of the pressure vessel, ensuring the stability and adaptability of clamping. The cooperation of the sliding columns 208 and the sliding grooves 209 further ensures that the movement trajectory of the clamping block 207 is accurately controllable.

[0031] ​The clamping block 207 has a recessed groove 2071 on one side near the pressing block 206, and a pressing inclined surface 2072 on the other side. A slide bar 2061 is fixedly connected to the pressing block 206 near the clamping block 207. The sliding connection between the recessed groove 2071 and the slide bar 2061 allows the clamping block 207 to move smoothly under the action of the pressing block 206. The pressing inclined surface 2072 allows the clamping block 207 to apply pressure to the upper sides of the pressure vessel, preventing the pressure vessel from shaking or shifting during the testing process.

[0032] The electric actuator 201 is vertically positioned, and the bottom end of the lifting column 205 on the same side is fixedly connected to the same clamping block 207. A spring 211 is sleeved on the outside of the lifting column 205, and a limit block 210 is fixedly connected to the top of the lifting column 205. The sliding rod 204 is fixedly connected to the inner wall of the detection box 1. The inner bottom surface of the detection box 1 is higher in the middle and lower on both sides. The vertical positioning of the electric actuator 201 ensures the linearity and stability of power transmission. The design of the spring 211 can provide buffering when the electric actuator 201 descends excessively, avoiding excessive external pressure on the pressure vessel. The design of the inner bottom surface of the detection box 1, which is higher in the middle and lower on both sides, facilitates liquid flow and positioning of the pressure vessel.

[0033] The top end of the lifting column 205 is fixedly connected to the side plate 203, and the bottom end of the lifting column 205 is fixedly connected to the clamping block 207.

[0034] The concealed groove 2071 is slidably connected to the slide bar 2061, and the slide column 208 is slidably connected to the slide groove 209.

[0035] The sealing assembly 3 includes clearance holes 308 on the front and rear sides of the testing box 1 and a mounting shell 301 located below the clearance holes 308. A double-ended screw 303 is rotatably connected inside the mounting shell 301. A first motor 302 is fixedly connected to the outer side of one end of the mounting shell 301. A threaded sleeve 304 is threadedly slidably fitted onto the outer side of the double-ended screw 303. A connecting plate 305 is fixedly connected to the top of the threaded sleeve 304, and a sealing plate 306 is fixedly connected to the top of the connecting plate 305. The first motor 302 drives the double-ended screw 303 to rotate, causing the threaded sleeve 304 and the connecting plate 305 to move, thereby causing the sealing plate 306 to cover the clearance holes 308. This design achieves rapid sealing of the testing box 1, avoiding the laborious operation of retrieving the pressure vessel from inside the testing box 1 in the traditional method. The pressure vessel can be directly pulled out from the clearance hole 308.

[0036] The mounting shell 301 is fixed outside the detection box 1, the output end of the first motor 302 extends into the mounting shell 301 and is fixedly connected with the double-end screw 303, the threaded sleeve 304 is slidingly connected with the top of the mounting shell 301, the outer side of the closing plate 306 is fixedly connected with the sealing gasket 307, the sealing gasket 307 is slidingly attached to the outer side of the detection box 1 and can cover the outside of the avoiding hole 308, the sealing gasket 307 is made of high-temperature-resistant and corrosion-resistant material, so that the sealing gasket 307 has good sealing performance in a high-pressure environment, and the sealing gasket 307 is closely attached to the outer side of the detection box 1, so that the sealing performance of the detection box 1 is further improved, and liquid leakage is prevented.

[0037] Working principle: before using the pressure container testing device, the overall condition of the device needs to be checked to determine whether the device can work normally, according to the Figure 1 Figure 5 As shown in the figure, first, the cylindrical pressure container is placed in the middle of the inner bottom surface of the detection box 1 from the avoiding hole 308, then the first motor 302 is started to make the double-end screw 303 rotate, so that the threaded sleeve 304 moves along the outside of the double-end screw 303, and the closing plate 306 moves through the connecting plate 305, so that the closing plate 306 drives the sealing gasket 307 to closely attach to each other and cover the outside of the avoiding hole 308, in the case that there is no liquid in the detection box 1, the cylindrical pressure container can be quickly placed and taken out, so that the pressure container on the inner bottom surface of the detection box 1 does not need to be fished out from the inside of the detection box 1 when the pressure container is taken out, which is convenient for operation.

[0038] When the pressure container is located between the two clamping blocks 207, the electric push rod 201 is started to make the arch frame 202 descend, so that the extrusion block 206 descends and extrudes the clamping block 207, along with the sliding of the sliding bar 2061 in the dark groove 2071, the clamping block 207 drives the sliding column 208 to slide in the sliding groove 209, so that the clamping block 207 extrudes the pressure container, the extrusion slope 2072 extrudes the two sides of the pressure container, finally the pressure container is subjected to pressure from the oblique upper side, cannot shake left and right, and cannot move up and down, this device only needs to use one component to complete the multi-directional pressing of the pressure container, which saves time and effort, and when the arch frame 202 excessively descends, the spring 211 will contract due to the reaction force, so that the direct transmission does not cause the pressure container to be subjected to excessive external pressure, which affects the pressure test, and even may cause the deformation of the pressure container.

[0039] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.​

Claims

1. A pressure vessel inspection device, comprising an inspection box (1), wherein a liquid replacement valve pipe (101) is fixedly installed on the bottom surface of the inspection box (1); Its features are, Also includes: The detection box (1) is equipped with a positioning component (2) inside, and a sealing component (3) is symmetrically provided on the outside of the detection box (1); The positioning component (2) includes an electric push rod (201) fixed to the top surface of the detection box (1). The output end of the electric push rod (201) is fixedly connected to an arch frame (202). The bottom sides of the arch frame (202) are fixedly connected to side plates (203). A sliding rod (204) and a lifting column (205) are slidably connected on the side plate (203). A pressing block (206) is fixedly connected to the bottom end of the lifting column (205). A clamping block (207) is slidably connected to the pressing block (206). A sliding column (208) is symmetrically fixedly connected to the outside of the clamping block (207). Sliding grooves (209) are symmetrically opened on the front and rear sides of the detection box (1). The clamping block (207) has a groove (2071) on one side near the extrusion block (206), and an extrusion inclined surface (2072) on the other side of the clamping block (207). A slide bar (2061) is fixedly connected to the side of the extrusion block (206) near the clamping block (207).

2. The pressure vessel inspection device according to claim 1, characterized in that: The electric push rod (201) is vertically arranged, and the bottom end of the lifting column (205) on the same side is fixedly connected to the same clamping block (207). A spring (211) is sleeved on the outside of the lifting column (205). A limit block (210) is fixedly connected to the top of the lifting column (205). The slide rod (204) is fixedly connected to the inner wall of the detection box (1). The inner bottom surface of the detection box (1) is high in the middle and low on both sides.

3. The pressure vessel inspection device according to claim 2, characterized in that: The top end of the lifting column (205) is fixedly connected to the side plate (203), and the bottom end of the lifting column (205) is fixedly connected to the clamping block (207).

4. The pressure vessel inspection device according to claim 1, characterized in that: The groove (2071) is slidably connected to the slide bar (2061), and the slide column (208) is slidably connected to the slide groove (209).

5. The pressure vessel inspection device according to claim 1, characterized in that: The enclosed assembly (3) includes clearance holes (308) on the front and rear sides of the detection box (1) and a mounting shell (301) located below the clearance holes (308). A double-ended screw (303) is rotatably connected inside the mounting shell (301). A first motor (302) is fixedly connected to the outer side of one end of the mounting shell (301). A threaded sleeve (304) is threadedly slidably sleeved on the outer side of the double-ended screw (303). A connecting plate (305) is fixedly connected to the top of the threaded sleeve (304). A closing plate (306) is fixedly connected to the top of the connecting plate (305).

6. The pressure vessel inspection device according to claim 5, characterized in that: The mounting shell (301) is fixed to the outside of the detection box (1), the output end of the first motor (302) extends into the mounting shell (301) and is fixedly connected to the double-ended screw (303), and the threaded sleeve (304) is slidably connected to the top of the mounting shell (301).

7. The pressure vessel inspection device according to claim 5, characterized in that: A sealing gasket (307) is fixedly connected to the outside of the sealing plate (306). The sealing gasket (307) slides against the outside of the detection box (1) and can cover the outside of the clearance hole (308).

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