Pressure vessel detection device convenient to adjust

Abstract

The utility model discloses a pressure vessel detection device convenient to adjust, which comprises a detection device body matched with a pipe orifice end of a pressure vessel, a valve is arranged between the outer side of the pressure vessel and the pipe orifice end, the detection device body comprises a frame shaped like a Chinese character'hui ', and a PLC (Programmable Logic Controller) is fixedly arranged on the inner wall of the left side of the frame shaped like a Chinese character'hui'. According to the utility model, a series of structures are arranged, so that the clamping distance can be automatically and adaptively adjusted and the pipe orifice end can be clamped and plugged in a pressure-controlled manner by utilizing gas in an inflating and pressurizing manner, manual adjustment and clamping work of personnel are not needed, the use convenience and the accurate control effect of the clamping force are improved, and the working efficiency is improved. The air tightness detection and pressure maintaining of the pressure container after pressure-controlled clamping and plugging are facilitated, the cooperative cooperation mode of air tightness detection and pressure-controlled clamping is achieved through a single air pump, power equipment does not need to be independently arranged, the phenomenon that the power equipment is additionally arranged is reduced, and a good integrated cooperative application effect is achieved.

Description

A pressure vessel testing device that is easy to adjust Technical Field

[0001] This utility model relates to the technical field of pressure vessel testing equipment, specifically a pressure vessel testing device that is easy to adjust. Background Technology

[0002] Pressure vessels are closed devices that hold gases or liquids and bear a certain pressure. Pressure vessels often pose safety hazards such as flammability, explosiveness, corrosiveness, and inability to withstand high temperatures. Once a pressure vessel leaks, the medium inside, especially the medium containing chemical components, will seriously pollute the surrounding environment and endanger human health. Therefore, a sealing test is conducted on pressure vessels to detect whether there is a leak.

[0003] The existing detection method involves connecting the detection device to the port on a pressure vessel, and observing the pressure change by inflating and maintaining pressure to determine if a leak exists. The connection method is usually a threaded connection or a horizontal clamping of the port by multiple bolts. This method has the following drawbacks:

[0004] Since different pressure vessels have different nozzle diameters, adjusting multiple bolts one by one for lateral clamping and connection makes it difficult to automatically and conveniently adjust and control the pressure clamping. The adjustment is not convenient enough, the clamping force is difficult to control, and the ease of use is not ideal. In view of this, this application proposes a pressure vessel detection device that is easy to adjust to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a pressure vessel testing device that is easy to adjust, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pressure vessel detection device that is easy to adjust, comprising a detection device body that cooperates with the pipe end of the pressure vessel, a valve being installed between the outer side of the pressure vessel and the pipe end, the detection device body comprising a U-shaped frame, a PLC controller being fixedly installed on the left inner wall of the U-shaped frame, and an air pump being fixedly installed on the right inner wall of the U-shaped frame.

[0007] A loop tube is fixedly fitted on the top outer side of the loop frame. A switching ventilation and pressure measuring component is fixedly connected between the air outlet of the air pump and the inner left wall of the loop tube. A conical plug fixedly fitted on the switching ventilation and pressure measuring component is fixedly installed at the bottom of the loop frame. Both the air pump and the switching ventilation and pressure measuring component are electrically connected to the PLC controller. The switching ventilation and pressure measuring component is used to control the PLC controller to first supply air to the loop tube and then switch to filling the pressure vessel when the air pump is started.

[0008] Stainless steel vent pipes are fixedly connected to both sides of the bottom of the U-shaped tube. A downward protrusion is integrally provided on both sides of the bottom of the U-shaped frame and a pressure-measuring clamping assembly is fixedly connected to it. The pressure-measuring clamping assembly is fixedly connected to the bottom end of the corresponding stainless steel vent pipe. The pressure-measuring clamping assembly is used to automatically clamp and support the pipe end of the pressure vessel from both sides when air is supplied in the U-shaped tube, and to detect the clamping force and transmit the pressure value to the PLC controller. The PLC controller automatically controls the change of air supply direction when the preset clamping pressure value is reached.

[0009] Preferably, the switching ventilation pressure measuring assembly includes an L-shaped tube fixedly connected to the air pump outlet, a conical plug fixedly sleeved on the L-shaped tube, a first solenoid valve fixedly connected between the left side of the L-shaped tube and the left inner wall of the U-shaped tube, a second solenoid valve installed on the L-shaped tube below the air pump outlet, a pressure gauge fixedly installed on the left side of the L-shaped tube below the second solenoid valve, the detection end of the pressure gauge extending into the L-shaped tube, and both the first and second solenoid valves electrically connected to the PLC controller.

[0010] Preferably, the pressure-measuring clamping assembly includes a horizontal tube fixedly connected to the bottom of the U-shaped frame. The opposing ends of the two horizontal tubes are both configured as sealing structures. The top of the horizontal tube is connected and fixedly connected to the bottom end of the corresponding stainless steel vent pipe. A piston is sealed and slidably sleeved inside the horizontal tube. A connecting rod is fixedly connected to the adjacent side of the two pistons. A pressure sensor is fixedly connected to the adjacent end of the two connecting rods. A guide sleeve is fixedly installed on the rear inner wall of the horizontal tube and slidably sleeved on the outer side of the corresponding connecting rod. A spring is fixedly connected between the guide sleeve and the corresponding piston and movably sleeved on the outer side of the corresponding connecting rod. An arc-shaped clamping block is fixedly connected to the adjacent side of the two pressure sensors. A horizontal guide rod is fixedly connected to the top of the opposing side of the two arc-shaped clamping blocks. The U-shaped frame is slidably sleeved on the two horizontal guide rods. The adjacent side of the two arc-shaped clamping blocks is configured as a concave arc structure and is bonded and fixedly covered with anti-slip rubber.

[0011] Preferably, the outer side of the conical plug is fitted with a conical sealing sleeve, and the outer side of the conical sealing sleeve is pressed tightly against the inner side of the top end of the pipe.

[0012] Preferably, a storage battery is fixedly installed on the inner left side of the U-shaped frame, and the PLC controller, the first solenoid valve, the second solenoid valve, the pressure sensor and the air pump are all electrically connected to the storage battery.

[0013] Preferably, a U-shaped handle is fixedly connected to the top of the U-shaped frame.

[0014] Preferably, a manual venting valve is fixedly connected to the top left side of the U-shaped tube.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Through the combination of the set-in U-shaped frame, conical block, PLC controller, air pump, U-shaped pipe, stainless steel vent pipe, switching venting and pressure measuring component and pressure measuring clamping component, it can plug and seal the pipe end of the pressure vessel. By inflating the gas, it can automatically and adaptively adjust the clamping distance and control the pressure clamping of the pipe end, eliminating the need for manual adjustment and clamping work, thus improving the ease of use and the accuracy of clamping force control.

[0017] 2. By using the air pump, conical plug, and switching ventilation and pressure testing components, the pressure vessel can be pressurized and pressure-maintained after pressure-controlled clamping and sealing to test its airtightness. Combined with the aforementioned pressure-controlled clamping, a single air pump can simultaneously achieve airtightness testing and pressure-controlled clamping in a coordinated manner, eliminating the need for separate power equipment and reducing the need for additional power equipment. This results in a better integrated and coordinated application effect.

[0018] This utility model, through a series of structures, facilitates the automatic adaptive adjustment of the clamping distance and the pressure-controlled clamping and sealing of the pipe end by means of gas pressurization, eliminating the need for manual adjustment and clamping work. This improves the ease of use and the accuracy of clamping force control. It also facilitates the pressure testing of the pressure vessel after pressure-controlled clamping and sealing, and enables the coordinated operation of airtightness testing and pressure-controlled clamping through a single air pump. This eliminates the need for separate power equipment, reducing the need for additional power equipment and achieving a better integrated and coordinated application effect. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the structure of a pressure vessel testing device that is easy to adjust according to this utility model;

[0020] Figure 2 is a three-dimensional structural diagram of the detection device body of a pressure vessel detection device that is easy to adjust according to the present invention.

[0021] Figure 3 is an enlarged cross-sectional view of part A in Figure 1;

[0022] Figure 4 is a magnified schematic diagram of part B in Figure 3.

[0023] In the diagram: 100, pipe end; 1, U-shaped frame; 101, PLC controller; 102, air pump; 103, U-shaped handle; 2, U-shaped pipe; 201, manual vent valve; 3, L-shaped pipe; 301, first solenoid valve; 302, second solenoid valve; 303, air pressure gauge; 4, conical plug; 5, stainless steel vent pipe; 501, horizontal pipe; 502, piston; 503, connecting rod; 504, guide sleeve; 505, pressure sensor; 506, spring; 6, U-shaped clamp; 601, horizontal guide rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] As shown in Figures 1 to 4, the pressure vessel detection device proposed in this embodiment includes a detection device body that cooperates with the pipe end 100 of the pressure vessel. A valve is installed between the outer side of the pressure vessel and the pipe end 100. The detection device body includes a U-shaped frame 1. A PLC controller 101 is fixedly installed on the left inner wall of the U-shaped frame 1. An air pump 102 is fixedly installed on the right inner wall of the U-shaped frame 1. A U-shaped handle 103 is fixedly connected to the top of the U-shaped frame 1.

[0026] A loop tube 2 is fixedly fitted on the top outer side of the loop frame 1. A manual vent valve 201 is fixedly connected to the top left side of the loop tube 2. A switching ventilation and pressure testing component is fixedly connected between the air outlet of the air pump 102 and the inner left wall of the loop tube 2. A conical block 4 is fixedly installed on the bottom of the loop frame 1 and fixedly fitted on the switching ventilation and pressure testing component. A conical sealing sleeve is adhesively fitted on the outside of the conical block 4. The outside of the conical sealing sleeve is tightly pressed against the inner top of the tube end 100. The air pump 102 and the switching ventilation and pressure testing component are both electrically connected to the PLC controller 101. The switching ventilation and pressure testing component is used to control the PLC controller 101 to first supply air to the loop tube 2 when the air pump 102 is started, and then switch to filling the pressure vessel with air.

[0027] Stainless steel vent pipes 5 are fixedly connected to both sides of the bottom of the U-shaped tube 2. The bottom of the U-shaped frame 1 is integrally provided with a downward protrusion and fixedly connected with a pressure-measuring clamping assembly. The pressure-measuring clamping assembly is fixedly connected to the bottom end of the corresponding stainless steel vent pipe 5. The pressure-measuring clamping assembly is used to automatically clamp and support the pipe end 100 of the pressure vessel from both sides when air is supplied in the U-shaped tube 2, and detect the clamping force and transmit the pressure value to the PLC controller 101. The PLC controller 101 automatically controls the change of air supply direction when the preset clamping pressure value is reached.

[0028] Specifically, the switching ventilation pressure measurement assembly includes an L-shaped tube 3 connected and fixed to the outlet of the air pump 102, a conical plug 4 fixedly sleeved on the L-shaped tube 3, wherein the bottom of the conical plug 4 has a fitting hole for fixed connection with the outside of the L-shaped tube 3, and the bottom inner wall of the U-shaped frame 1 has a movable through hole for the L-shaped tube 3 to pass through. The left side of the L-shaped tube 3 and the left inner wall of the U-shaped tube 2 are connected and fixedly connected to the same first solenoid valve 301. A second solenoid valve located below the outlet of the air pump 102 is installed on the L-shaped tube 3. A pressure gauge 303 is fixedly installed on the left side of the L-shaped tube 3, below the second solenoid valve 302. The detection end of the pressure gauge 303 extends into the L-shaped tube 3. Both the first solenoid valve 301 and the second solenoid valve 302 are electrically connected to the PLC controller 101. The L-shaped tube 3, the first solenoid valve 301, the second solenoid valve 302, and the pressure gauge 303 work together to control the first solenoid valve 301 and the air pump 102 to open using preset settings on the PLC controller 101, and to control the first... The pressure value for switching between closing solenoid valve 301 and opening the second solenoid valve 302 is determined by the initial pressing of the loop frame 1, which causes the conical plug 4 to squeeze and seal the inner side of the top of the pipe end 100. Then, the PLC controller 101 is activated, first controlling the air pump 102 and the first solenoid valve 301 to open. The air pump 102 supplies air into the L-shaped pipe 3, and the air is supplied into the loop 2 via the first solenoid valve 301. Subsequently, when the clamping pressure value received by the PLC controller 101 reaches the preset value, it controls the first solenoid valve 301 to close and the second solenoid valve 302 to open. The second solenoid valve 302 is opened to switch the air supply direction, changing it to filling the pressure vessel with air. The pressure gauge 303 detects the air pressure inside the pressure vessel through the L-shaped tube 3. When the required air pressure value is reached, the operator can operate the PLC controller 101 to shut off the air pump 102 and the second solenoid valve 302. By observing whether the air pressure value detected by the pressure gauge 303 drops over a period of time, the sealing performance of the pressure vessel can be judged. A drop in air pressure indicates that there is a leak. This process of filling and maintaining pressure in the pressure vessel to test its airtightness is achieved.

[0029] Furthermore, the pressure-measuring clamping assembly includes a horizontal tube 501 fixedly connected to the bottom of the U-shaped frame 1. The opposing ends of the two horizontal tubes 501 are both configured as sealing structures. The top of the horizontal tube 501 is connected and fixedly connected to the bottom end of the corresponding stainless steel vent pipe 5. A piston 502 is slidably fitted inside the horizontal tube 501. A sealing ring is adhesively fitted on the outside of the piston 502, slidingly contacting the inner wall of the corresponding horizontal tube 501, achieving a sliding seal between the outside of the piston 502 and the inner wall of the horizontal tube 501. The two pistons 502 are located between the two stainless steel vent pipes 5. A connecting rod 503 is fixedly connected to the adjacent side of each of the two pistons 502. A pressure sensor 505 is fixedly connected to the adjacent end of each of the two connecting rods 503. A guide sleeve 504 is fixedly installed on the inner wall of the rear side and is slidably sleeved on the outside of the corresponding connecting rod 503. A spring 506 is movably sleeved on the outside of the corresponding connecting rod 503 and fixedly connected between the guide sleeve 504 and the corresponding piston 502. An arc-shaped clamp 6 is fixedly connected to the side of the two pressure sensors 505 that are close to each other. A horizontal guide rod 601 is fixedly connected to the top of the side of the two arc-shaped clamps 6 that are in opposition. A ring frame 1 is slidably sleeved on the two horizontal guide rods 601. A horizontal guide hole is opened on both sides of the ring frame 1. The inner wall of the horizontal guide hole is slidably sleeved with the outer side of the corresponding horizontal guide rod 601, which plays the role of guiding the horizontal guide rod 601 to slide laterally. The side of the two arc-shaped clamps 6 that are close to each other is set as a concave arc structure and is bonded and fixed with anti-slip rubber.

[0030] The system, consisting of a horizontal tube 501, piston 502, connecting rod 503, pressure sensor 505, guide sleeve 504, spring 506, arc-shaped clamp 6, horizontal guide rod 601, and anti-slip rubber, works in conjunction with these components. When gas is supplied into the U-shaped tube 2, the gas automatically and evenly flows through two stainless steel vent pipes 5, distributing the gas evenly into the two horizontal tubes 501. This gas compression pushes the two pistons 502 to move closer together and compresses the two springs 506. The two pistons 502, through the two connecting rods 503, drive the two pressure sensors 505 to move closer together, thus controlling the pressure. Sensor 505 drives two arc-shaped clamping blocks 6 to move close together to clamp the outside of the pipe end 100. Pressure sensor 505 detects the squeezing force applied by the corresponding connecting rod 503 during clamping and transmits the pressure value to PLC controller 101. The two pressure sensors 505 directly apply pressure to the two arc-shaped clamping blocks 6 for clamping work, bypassing the spring 506. Therefore, they directly detect the pressure applied to the arc-shaped clamping blocks 6 and are not affected by the compression of the spring 506. The compression of the spring 506 only provides the function of rebounding and resetting the piston 502 when releasing air after use.

[0031] Furthermore, a battery is fixedly installed on the inner left side of the U-shaped frame 1. The PLC controller 101, the first solenoid valve 301, the second solenoid valve 302, the pressure sensor 505, and the air pump 102 are all electrically connected to the battery. The battery is used to supply power to the PLC controller 101, the first solenoid valve 301, the second solenoid valve 302, the pressure sensor 505, and the air pump 102.

[0032] The usage method of this embodiment is as follows: When using this easily adjustable pressure vessel testing device, the programmer uses the PLC controller 101 to pre-set the opening of the first solenoid valve 301 and the air pump 102, and sets the pressure value for switching between closing the first solenoid valve 301 and opening the second solenoid valve 302. When opening the valve on the pressure vessel for sealing testing, the operator first presses down on the U-shaped frame 1 to drive the conical plug 4 to squeeze and seal the inner side of the top of the pipe end 100. The conical sealing sleeve on the outside of the conical plug 4 is used for sealing during the squeezing process. Then, the PLC controller 101 is started to control the air pump 102 and the first solenoid valve 301 to open. Utilizing the characteristic of automatic and uniform gas flow, the gas is then evenly distributed into the two horizontal pipes 501 through two stainless steel vent pipes 5. At this time, the gas squeezes and pushes the two pistons 502 to move close together and compress the two springs 506. The two pistons 502 drive the two pressure sensors 505 to move close together through the two connecting rods 503. The two pressure sensors 505 drive the two arc-shaped clamps 6 to move close together and press against the pipe. The outer side of the opening 100 is clamped, and the arc-shaped clamping block 6 drives the corresponding horizontal guide rod 601 to slide laterally within the U-shaped frame 1. The pressure sensor 505 detects the compressive force applied by the corresponding connecting rod 503 during clamping and transmits the pressure value to the PLC controller 101. Among them, the two pressure sensors 505 directly apply pressure to the two arc-shaped clamping blocks 6 for clamping work, bypassing the spring 506. Therefore, to directly detect the pressure applied to the arc-shaped clamping blocks 6, it is not affected by the compression of the spring 506. The compression of the spring 506 only provides a release after use. When the gas is applied, the piston 502 rebounds and resets. When the clamping pressure value received by the PLC controller 101 reaches the preset pressure value, it controls the first solenoid valve 301 to close and controls the second solenoid valve 302 to open, thereby switching the gas supply direction. This achieves the effect of automatically and adaptively adjusting the clamping distance using gas and controlling the pressure clamping of the pipe end 100. No manual adjustment or clamping work is required, which improves the ease of use and the accuracy of clamping force control. In addition, the conical block 4 can also be used to conveniently insert and seal the pipe ends with different inner diameter specifications using its conical shape.

[0033] When the PLC controller 101 controls the first solenoid valve 301 to close and the second solenoid valve 302 to open, switching the air supply direction, the pressure vessel is filled with air through the L-shaped tube 3. The pressure gauge 303 detects the air pressure in the pressure vessel through the L-shaped tube 3. When the required air pressure value is reached, the operator can operate the PLC controller 101 to close the air pump 102 and the second solenoid valve 302. The sealing performance of the pressure vessel is judged by observing whether the air pressure value detected by the pressure gauge 303 drops over a period of time. A drop in air pressure indicates a leak. This achieves the effect of filling and maintaining pressure in the pressure vessel to test its airtightness. Furthermore, by using the air pump 102 to simultaneously achieve airtightness detection and pressure control clamping, there is no need to set up separate power equipment, reducing the need for additional power equipment and demonstrating a good integrated collaborative application effect.

[0034] When separation is required after testing, personnel can directly open the manual vent valve 201 to release air from the U-shaped tube 2. At this time, the gas in the horizontal tube 501 will be discharged through the corresponding stainless steel vent pipe 5 and the U-shaped tube 2 in sequence, relieving the gas compression pressure. At this time, the elastic force of the two springs 506 in the compressed state will drive the two pistons 502 to repel each other and move back to reset. The two pistons 502 will drive the two arc-shaped clamps 6 to move repellingly through the two connecting rods 503 and the two pressure sensors 505 in sequence, releasing the clamping state. Then the U-shaped frame 1 can be moved up to drive the conical block 4 to separate from the pipe end 100 of the pressure vessel.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. 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 described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pressure vessel detection device that is easy to adjust, comprising a detection device body that mates with the nozzle end (100) of a pressure vessel, wherein a valve is installed between the outer side of the pressure vessel and the nozzle end (100), characterized in that: The detection device body includes a U-shaped frame (1), a PLC controller (101) is fixedly installed on the left inner wall of the U-shaped frame (1), and an air pump (102) is fixedly installed on the right inner wall of the U-shaped frame (1). A U-shaped tube (2) is fixedly fitted on the top outer side of the U-shaped frame (1). A switching ventilation pressure measuring component is fixedly connected between the air outlet of the air pump (102) and the left inner wall of the U-shaped tube (2). A conical block (4) is fixedly fitted on the switching ventilation pressure measuring component at the bottom of the U-shaped frame (1). The air pump (102) and the switching ventilation pressure measuring component are both electrically connected to the PLC controller (101). Stainless steel ventilation pipes (5) are fixedly connected to both sides of the bottom of the U-shaped tube (2). A downward protrusion is integrally provided on both sides of the bottom of the U-shaped frame (1) and a pressure measuring clamping component is fixedly connected to it. The pressure measuring clamping component is fixedly connected to the bottom end of the corresponding stainless steel ventilation pipe (5).

2. The pressure vessel detection device with convenient adjustment according to claim 1, characterized in that: The switching ventilation pressure measuring assembly includes an L-shaped tube (3) connected to and fixed at the outlet of the air pump (102), a conical plug (4) fixedly sleeved on the L-shaped tube (3), a first solenoid valve (301) connected and fixed between the left side of the L-shaped tube (3) and the left inner wall of the U-shaped tube (2), a second solenoid valve (302) located below the outlet of the air pump (102) installed on the L-shaped tube (3), a pressure gauge (303) located below the second solenoid valve (302) fixedly installed on the left side of the L-shaped tube (3), the detection end of the pressure gauge (303) extending into the L-shaped tube (3), and both the first solenoid valve (301) and the second solenoid valve (302) being electrically connected to the PLC controller (101).

3. The pressure vessel detection device with convenient adjustment according to claim 2, characterized in that: The pressure-measuring clamping assembly includes a horizontal tube (501) fixedly connected to the bottom of the U-shaped frame (1). The opposing ends of the two horizontal tubes (501) are both set as sealing structures. The top of the horizontal tube (501) is connected and fixedly connected to the bottom end of the corresponding stainless steel vent pipe (5). A piston (502) is sealed and slidably sleeved inside the horizontal tube (501). A connecting rod (503) is fixedly connected to the adjacent side of the two pistons (502). A pressure sensor (505) is fixedly connected to the adjacent end of the two connecting rods (503). A slidably sleeved... The guide sleeve (504) on the outside of the corresponding connecting rod (503) is fixedly connected to the guide sleeve (504) and the corresponding piston (502), and a spring (506) is movably sleeved on the outside of the corresponding connecting rod (503); the two pressure sensors (505) are fixedly connected to the side of each other with an arc-shaped clamp (6), and the top of the side of each of the two arc-shaped clamps (6) is fixedly connected to a horizontal guide rod (601). The ring frame (1) is slidably sleeved on the two horizontal guide rods (601). The side of each of the two arc-shaped clamps (6) is set to a concave arc structure and is bonded and fixed with anti-slip rubber.

4. The pressure vessel testing device with convenient adjustment according to claim 1, characterized in that: The outer side of the conical plug (4) is fitted with a conical sealing sleeve, and the outer side of the conical sealing sleeve is pressed tightly against the inner side of the top of the pipe end (100).

5. The pressure vessel detection device with convenient adjustment according to claim 3, characterized in that: A storage battery is fixedly installed on the inner left side of the U-shaped frame (1). The PLC controller (101), the first solenoid valve (301), the second solenoid valve (302), the pressure sensor (505), and the air pump (102) are all electrically connected to the storage battery.

6. The pressure vessel detection device with convenient adjustment according to claim 1, characterized in that: The top of the spiral frame (1) is fixedly connected to a U-shaped handle (103).

7. The pressure vessel testing device with convenient adjustment according to claim 1, characterized in that: The top left side of the U-shaped tube (2) is connected to a manual vent valve (201).

Images