Ultrahigh pressure vessel plug body sealing test detection device

Abstract

The invention relates to the technical field of boiler pressure vessel detection, in particular to an ultrahigh pressure vessel plug body sealing test detection device, and aims to efficiently detect and ensure the sealing performance of a pressure vessel sealing plug body. The sealing performance of the sealing plug body is accurately tested, and the safety of the container is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of boiler pressure vessel detection, and in particular to a sealing test detection device for an ultra-high pressure vessel plug. Background Art

[0002] Ultra-high pressure vessels are the core components of hot isostatic pressing equipment. Ultra-high pressure vessels can achieve safe sealing and withstand internal pressure to the maximum extent during operation. With the increasing application of hot isostatic pressing equipment in the forming process of metal and non-metallic materials, it is also more widely used in the food industry and chemical industry. Ultra-high pressure vessels not only work under high pressure and have high stress levels, but are often accompanied by high temperatures. The plug sealing component of the ultra-high pressure container is the most important component, which is mainly composed of a head and a sealing element (metal sealing ring).

[0003] Ultra-high pressure containers are usually used to store or transport high-pressure gases or liquids. Any tiny sealing defect may cause gas or liquid leakage, which may not only cause material loss but also serious safety accidents, such as explosion or leakage of harmful substances. The sealing of ultra-high pressure containers requires the sealing of the plug body, so it is necessary to conduct a sealing test on the plug body to verify the sealing performance of the plug body and the container as a whole, and conduct a preliminary test on the sealing of the plug body to ensure the safe use of the ultra-high pressure container. In addition, there are many problems in the existing sealing test of the ultra-high pressure container plug body, including the complexity of the operation process, the inconvenience of the operation and detection process, and the low efficiency when conducting a large number of tests. These problems not only make the detection process time-consuming and labor-intensive, but also directly affect the efficiency of the detection. Therefore, it is necessary to develop a sealing test detection device for the plug body of an ultra-high pressure container. Summary of the invention

[0004] In view of the above-mentioned defects and problems, the present invention provides an ultra-high pressure container plug sealing test detection device, the purpose of which is to efficiently detect and ensure the sealing of the pressure vessel sealing plug. Through the built-in air pressure sensor and phased array probe, combined with the clamping assembly, it can accurately test the sealing performance of the sealing plug in a simulated ultra-high pressure environment to ensure the safety of the container.

[0005] The solution adopted by the present invention to solve the technical problem is: a super-high pressure container plug body sealing test detection device, including a detection cylinder, a pressure supply and exhaust assembly, a phased array probe, a sealing plug body and a pressing assembly, the detection cylinder includes a pressure vessel for filling high pressure, a detection chamber is formed between the pressure vessel and the detection cylinder, an air pressure sensor for detecting air pressure changes is arranged in the detection chamber, the pressure supply and exhaust assembly is used to supply pressure and exhaust to the pressure vessel, and a cylinder cover is movably installed at the end of the detection cylinder; The clamping assembly includes a fixed screw sleeve arranged coaxially with the cylinder cover, a screw tube is rotatably mounted in the fixed screw sleeve, a driving screw is rotatably mounted in the screw tube, and a translation push tube is mounted on the inner end of the screw tube, a sleeve connection portion is provided between the translation push tube and the screw tube to prevent the translation push tube from rotating, and a disc spring is provided at the sleeve connection portion to compensate for the axial movement of the translation push tube, and the rotation of the screw tube can synchronously push the translation push tube axially; a plurality of inner column heads are evenly distributed radially on the inner side surface of the cylinder cover, and a fixed disc guide on the outer circumferential side of the translation push tube is sleeved on the inner column head, The inner end of the translation push tube is fixedly connected with a pad, and the pad guide is sleeved on the inner column head. The outer side surface of the pad is sleeved with multiple radial sliding clamps along the radial sliding. At the same time, each radial sliding clamp is elastically constrained by an annular spring, and a lower conical surface section is opened at the bottom of the radial sliding clamp. A pushing cone head is installed at the inner end of the driving screw. The pushing cone head can push the radial sliding clamp through the lower conical surface section, so that the radial sliding clamp moves radially on the pad, and a flat hole corresponding to the radial sliding clamp is radially opened on the translation push tube; The sealing plug body is guided by the inner column head and is parallelly sleeved on the inner side of the pad. The phased array probes are evenly distributed in the detection grooves on the inner side of the pad. The sealing plug body can be detected by the phased array probe. A pressure sensor is provided on the ring seat of the pressure vessel mouth, and outer column heads corresponding to each inner column head are connected to the ring seat. Concave flat grooves are provided on both sides of the outer column head. An upper inclined surface section is provided on the top of the radial sliding clamp, and a matching inclined surface section is provided on the front side of the concave flat groove. When the radial sliding clamp moves radially, the upper inclined surface section and the matching inclined surface section cooperate with each other, so that the radial sliding clamp can push the pad inward to seal the sealing plug body to the mouth of the pressure vessel. After the cylinder cover is closed, the spiral tube can control the axial translation of the sealing plug body to make the sealing plug body seal and dock with the pressure vessel mouth. At the same time, the driving screw can push the radial sliding clamp so that the radial sliding clamp radially compresses and seals the sealing plug body, and the sealing performance of the sealing plug body is tested.

[0006] Furthermore, the radial sliding card plate is composed of a sliding block and a card plate, which is symmetrically connected to the top of the sliding block. A card slot is formed between adjacent card plates, and the card slot can constrain the card sleeve on the concave flat groove. The sliding block is slidably sleeved in the constraint groove of the pad, so that the radial sliding card plate can move radially on the pad, and the upper inclined surface section is opened at the top of the card plate, and the lower conical surface section is opened at the bottom of the sliding block.

[0007] Furthermore, a positioning parallel groove corresponding to the radial sliding clamping plate is provided on the outer side surface of the pad, and the positioning parallel groove can assist the radial sliding clamping plate in positioning and parallelism.

[0008] Furthermore, the fixed disc is fixedly connected to the translation push tube, and a guide tube is fixedly sleeved on the fixed disc, and the fixed disc is guided and sleeved on the inner column head through the guide tube.

[0009] Furthermore, the sleeve connection part includes a sleeve connection ring groove provided on the screw tube, and a sleeve connection ring platform sleeved with the sleeve connection ring groove is provided in the translation push tube. The translation push tube can slide axially in the sleeve connection ring groove of the screw tube through the sleeve connection ring platform. Through the mutual cooperation between the sleeve connection ring groove and the adjustment ring platform, the screw tube can push the translation push tube to move axially when it rotates; the disc spring is sleeved between the sleeve connection ring platform and the sleeve connection ring groove.

[0010] Furthermore, the pressure supply and exhaust assembly includes a booster pump for pressurizing the pressure vessel, the booster pump is connected to the pressure vessel through a pipeline, a pressure gauge is arranged on the pipeline, and an exhaust valve is arranged on the pressure vessel.

[0011] The beneficial effects of the present invention: the present invention has a unique structure, ingenious design, and simple operation. The two actions of axial translation and radial compression are realized by the spiral tube and the driving screw, which simplifies the operation process and the device structure, improves the convenience of operation and the compactness of the device, and can quickly connect the sealing plug body with the tank mouth of the pressure vessel, and push the radial clamping plate by the driving screw to realize the radial compression and sealing of the sealing plug body, effectively improving the efficiency of the sealing performance detection of the sealing plug body, and through the synergistic effect of the spiral tube and the driving screw, as well as the compensating movement stroke of the disc spring, the precise axial and radial movement and compression of the sealing plug body are ensured, and the accuracy of the sealing performance detection is improved. The built-in air pressure sensor and phased array probe are used in combination with the compression assembly to accurately test the sealing performance of the sealing plug body in a simulated ultra-high pressure environment to ensure the safety of the container. The overall simplified structure and operation process reduce the maintenance cost and failure rate of the device, and improve the reliability and service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0014] Figure 3 This is one of the structural schematic diagrams of the clamping assembly.

[0015] Figure 4 This is the second structural diagram of the clamping assembly.

[0016] Figure 5 This is one of the schematic diagrams of the use status of the clamping component.

[0017] Figure 6 This is the second schematic diagram of the use status of the clamping component.

[0018] Figure 7 for Figure 6 A magnified schematic diagram of part A in FIG.

[0019] Figure 8One of the front views of the clamping assembly.

[0020] Fig. 9 One of the internal cross-sectional views of the clamping assembly.

[0021] Fig.10 This is the second front view of the clamping assembly.

[0022] Fig.11 This is the second internal cross-sectional view of the clamping assembly.

[0023] Fig.12 One of the expanded schematic diagrams of the clamping assembly.

[0024] Fig.13 This is the second schematic diagram of the clamping component expansion.

[0025] Fig.14 It is a schematic diagram of the cutaway structure of the clamping component.

[0026] Fig.15 Schematic diagram of the structure of the outer column head.

[0027] Fig.16 It is a control flow chart of the present invention.

[0028] In the figure: 1-detection cylinder, 101-pressure vessel, 102-tank mouth, 103-ring seat, 104-detection chamber, 2-outer column head, 201-concave flat groove, 202-matching inclined surface section, 3-pressure supply and exhaust assembly, 4-sealing plug body, 401-metal sealing ring, 5-cylinder cover, 6-fixed screw sleeve, 7-screw pipe, 8-driving screw, 9-pushing cone head, 10-handwheel, 11-translational push pipe, 12-flat hole, 13-sleeve connection part, 131-sleeve ring groove, 132-sleeve ring platform, 14-disc spring, 15-fixed disc, 16-guide tube, 17-inner column head, 18-guide seat, 19-pad, 191-detection groove, 192-constraint groove, 193-positioning parallel groove, 20-radial sliding card plate, 21-sliding block, 22-card plate, 23-upper inclined surface section, 24-lower cone segment, 25-annular spring, 26-pressure sensor, 27-phased array probe, 28-air pressure sensor. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0030] Example 1: There are many problems in the existing sealing test of ultra-high pressure container plugs, including the complexity of the operation process, the inconvenience of the operation and testing process, and the low efficiency when conducting a large number of tests. These problems not only make the testing process time-consuming and labor-intensive, but also directly affect the efficiency of the test.

[0031] In response to the above problems, this embodiment provides an ultra-high pressure container plug sealing test detection device, which is used to detect the sealing performance of the ultra-high pressure container sealing plug. The device body includes a detection cylinder, a pressure supply and exhaust assembly, a phased array probe, a sealing plug and a clamping assembly.

[0032] like Figure 2 As shown, the interior of the detection cylinder 1 includes a pressure vessel 101 that can be filled with high pressure, and a detection chamber 104 is formed between the pressure vessel 101 and the detection cylinder 1. The negative pressure in the detection chamber 104 is evacuated to a vacuum state, and an air pressure sensor 28 for monitoring air pressure changes is installed in the detection chamber 104 to detect the sealing performance of the sealing plug body 4. The pressure supply and exhaust assembly 3 is used to pressurize and exhaust the pressure vessel 101. The pressure supply and exhaust assembly 3 includes a booster pump for pressurizing the pressure vessel 101. The booster pump is connected to the pressure vessel 101 through a pipeline, and a pressure gauge is arranged on the pipeline, and an exhaust valve is arranged on the pressure vessel 101.

[0033] like Figure 1 As shown, a cylinder cover 5 is movably installed at the end of the detection cylinder 1. The cylinder cover 5 is hingedly installed and provided with a fastening bolt for auxiliary sealing. After the cylinder cover 5 is closed, the fastening bolt can be tightened onto the detection cylinder 1 to strengthen the sealing of the cylinder cover 5. like Figure 4-7 As shown, the clamping assembly includes a fixed screw sleeve 6 coaxially arranged on the cylinder cover 5, the fixed screw sleeve 6 is internally threaded with a screw tube 7, and a driving screw 8 is internally threaded with the screw tube 7, the inner end of the driving screw 8 is fixedly installed with a push cone head 9, the outer end is fixedly installed with a hand wheel 10, and the inner end of the screw tube 7 is covered with a translation push tube 11, and a sleeve connection portion 13 is provided between the translation push tube 11 and the screw tube 7 to prevent the translation push tube 11 from rotating. The screw tube 7 can realize the synchronous axial push of the translation push tube 11 by rotating, and the sleeve connection portion 13 includes a sleeve opening on the screw tube 7. A sleeve ring groove 131 is provided, and a sleeve ring platform 132 sleeved with the sleeve ring groove 131 is provided in the translation push tube 11. The translation push tube 11 can slide axially in the sleeve ring groove 131 of the screw tube 7 through the sleeve ring platform 132. Through the mutual cooperation between the sleeve ring groove 131 and the adjustment ring platform, the screw tube 7 can push the translation push tube 11 to move axially when it rotates, and a disc spring 14 is provided in the sleeve portion 13 to compensate for the axial movement of the translation push tube 11. The disc spring 14 is sleeved between the sleeve ring platform 132 and the sleeve ring groove 131, and the disc spring 14 is located on the inner side of the sleeve switching platform.

[0034] A plurality of inner studs 17 are evenly distributed along the radial direction on the inner side surface of the cylinder cover 5, and 6 to 8 inner studs 17 may be arranged. The inner studs 17 are fixedly sleeved in the guide seat 18 on the inner side surface of the cylinder cover 5, and a fixed disc 15 is provided on the outer circumference of the translation push tube 11. The fixed disc 15 is fixedly connected to the translation push tube 11, and a guide tube 16 is fixedly sleeved on the fixed disc 15. The fixed disc 15 is guided and sleeved on the inner stud 17 through the guide tube 16. The inner stud 17 has the following functions: first, it can position the sleeved sealing plug body 4, and second, it can guide the translation push tube 11 and prevent the translation push tube 11 from rotating.

[0035] A backing plate 19 is fixedly connected to the inner end of the translation push tube 11. The backing plate 19 is guided and sleeved on the inner column head 17, and the backing plate 19 is parallel to the fixed disc 15. Figure 12-14 As shown, a plurality of radial sliding card plates 20 are radially slidably sleeved on the outer side surface of the pad 19, and the radial sliding card plates 20 are slidably sleeved in the constraint groove 192 of the pad 19. At the same time, each radial sliding card plate 20 is elastically constrained by the annular spring 25. In the initial state, each radial sliding card plate 20 is elastically constrained by the annular spring 25 to be in a contracted state, so that each radial sliding card plate 20 will not separate from the pad 19. It should be noted that the radial sliding card plate 20 is composed of a sliding block 21 and a card plate 22. The card plate 22 is fixedly connected to the top of the sliding block 21 symmetrically on the left and right, and a card slot is formed between adjacent card plates 22, which can constrain the card sleeve to be in the concave flat groove 2 of the outer column head 2. 01, and an upper inclined surface section 23 is provided on the top of the card plate 22, the sliding block 21 can be slidably mounted in the constraint groove 192 of the pad 19, so that the radial sliding card plate 20 can move radially on the pad 19, and a lower conical surface section 24 is provided at the bottom of the sliding block 21, and the pushing cone head 9 at the inner end of the driving screw 8 can push the radial sliding card plate 20 through the lower conical surface section 24, so that the radial sliding card plate 20 can move radially on the pad 19, and a flat hole 12 corresponding to the radial sliding card plate 20 is radially provided on the translation push tube 11, when the radial sliding card plate 20 moves radially, the radial sliding card plate 20 can pass through the flat hole 12 and move out of the translation push tube 11.

[0036] A metal sealing ring 401 is fixedly mounted on the sealing plug body 4, and the sealing plug body 4 can be parallelly mounted on the inner side of the pad 19 along the guide of the inner column head 17, and a detection groove 191 is opened on the inner side of the pad 19, and the phased array probes 27 are evenly installed in the detection grooves 191, and the phased array probes 27 are connected to the controller signal. The phased array probes 27 are ultrasonic probes. The sealing plug body 4 can be detected for defects through the phased array probes 27. The phased array is an ultrasonic detection technology that uses multiple ultrasonic probes to be arranged in a specific time and space distribution. By adjusting the phase difference between the ultrasonic waves emitted by the probes, the focus point and scanning direction of the ultrasonic beam can be controlled to achieve beam forming, and the propagation characteristics of ultrasonic waves in the material are used to detect defects inside metals or other solid materials. Ultrasonic waves can penetrate metals and propagate therein. When encountering defects inside the material (such as cracks, pores, inclusions, etc.), the ultrasonic wave will be reflected, refracted or scattered, and the reflected ultrasonic wave is received by the probe. By analyzing these signals, the position, size and nature of the defect can be determined, and the defect detection of the sealing plug body 4 can be achieved. It can provide more accurate defect positioning and a wider coverage range. The phased array technology in ultrasonic testing is equivalent to the ultrasonic imaging technology in medical imaging. It allows the inspector to change the propagation direction of the ultrasonic wave by electronic means without moving the probe. The phased array probe 27 can adopt a disc-shaped layout to conduct comprehensive inspection of circular parts. That is to say, when the sealing plug body 4 is subjected to ultra-high pressure in the pressure vessel 101 and produces defects such as deformation or damage, the phased array probe 27 can detect its defects.

[0037] like Figure 5 , Figure 8 , Fig.12 As shown, a pressure sensor 26 is installed on the ring seat 103 of the tank mouth 102 of the pressure container 101. The pressure sensor 26 is connected to the controller signal. When the solenoid 7 rotates to control the sealing plug body 4 to dock with the tank mouth 102 of the pressure container 101, the axial pressure of the sealing plug body 4 can be detected by the pressure sensor 26. Figure 5 , Figure 8-12 As shown, the outer studs 2 corresponding to the inner studs 17 are fixedly connected to the ring seat 103. Fig.15 As shown, concave flat grooves 201 are provided on both sides of the outer column head 2, and a matching bevel section 202 is provided on the front side of the concave flat groove 201. The matching bevel section 202 can cooperate with the upper bevel section 23 of the radial sliding clamp 20. When the radial sliding clamp 20 moves radially, the upper bevel section 23 and the matching bevel section 202 cooperate with each other, so that the radial sliding clamp 20 can push the pad 19 inward, and the sealing plug body 4 is sealed and pressed onto the tank mouth 102 of the pressure vessel 101.

[0038] After the cylinder cover 5 is closed, the screw tube 7 can control the axial translation of the sealing plug body 4 so that the sealing plug body 4 is sealed and docked with the tank mouth 102 of the pressure vessel 101. At the same time, the radial sliding clamp 20 can be pushed by the driving screw 8 so that the radial sliding clamp 20 radially compresses and seals the sealing plug body 4, thereby testing the sealing performance of the sealing plug body 4.

[0039] Operation process: guide the sealing plug body 4 to be tested along the inner column head 17 and put it parallel to the inner side of the pad 19, ensure that the sealing plug body 4 is aligned with the detection groove 191 on the inner side of the pad 19, close the cylinder cover 5 of the detection cylinder body 1, ensure the sealing of the cylinder cover 5 and the detection cylinder body 1, after the cylinder cover 5 is closed, the inner column head 17 is close to the outer column head 2, but there is no contact, and there is a gap; The radial sliding card plate 20 is constrained in a retracted state by the annular spring 25 in the initial state. The driving solenoid 7 is rotated by the hand wheel 10, and the pushing cone head 9 of the driving screw 8 will push the radial sliding card plate 20, so that the radial sliding card plate 20 moves radially outward on the pad 19, so that the top of the radial sliding card plate 20 is pressed against the lower side of the inner column head 17. Because there are no concave grooves 201 on both sides of the inner column head 17, after the radial sliding card plate 20 is pressed against the lower side of the inner column head 17, the radial sliding card plate 20 is constrained and locked by the inner column head 17, so that the driving screw 8 is pressed tightly against the radial sliding card plate 20. Since the driving screw 8 is in a state of being pressed tightly against the radial sliding card plate 20, the top of the radial sliding card plate 20 is constrained by the inner column head 17 The screw 7 is locked, and the driving screw 8 is rotated at this time. The driving screw 8 itself will not rotate in the screw tube 7. Then the driving screw 8 is continued to be rotated, and the driving screw 8 will drive the screw tube 7 to rotate in the fixed screw sleeve 6. The screw tube 7 rotates and synchronously translates to push the translation push tube 11, thereby translating the sealing plug body 4 forward until the sealing plug body 4 and the tank mouth 102 of the pressure vessel 101 are initially docked. When the pressure sensor 26 alarms, it means that the sealing plug body 4 and the tank mouth 102 of the pressure vessel 101 have achieved a preliminary docking compression effect. It should be noted that in the process of the screw tube 7 rotating to control the axial translation of the sealing plug body 4 and making the sealing plug body 4 dock with the tank mouth 102, the sealing plug body 4 will be gradually pushed from the inner column head 17 to the outer column head 2 by the pad 19; When the sealing plug body 4 is docked with the tank mouth 102, the screw tube 7 is in a tightened state without a rotational translation stroke. At the same time, the inner column head 17 no longer constrains the locking radial sliding card plate 20, and the concave flat groove 201 on the outer side of the outer column head 2 is exposed. The top of the radial sliding card plate 20 can be sleeved in the concave flat groove 201 of the outer column head 2. At this time, since the screw tube 7 has no rotational translation stroke, the screw tube 7 will not rotate in the fixed screw sleeve 6, so the driving screw 8 can rotate freely in the screw tube 7, and the driving screw 8 can continue to rotate. The screw rod 8 is moved, and the pushing cone head 9 will push the radial sliding card plate 20, so that the radial sliding card plate 20 moves radially outward. Through the bevel cooperation between the upper bevel section 23 on the top of the radial sliding card plate 20 and the bevel section 202 of the outer column head 2, the radial sliding card plate 20 will push the pad 19 inward to radially compress the sealing plug body 4. At the same time, when the pad 19 is pressed, the disc spring 14 compensates for its moving stroke, and the sealing plug body 4 is sealed and pressed into the tank mouth 102, achieving a tighter and tighter effect.

[0040] After the sealing plug body 4 is radially compressed, the negative pressure or negative pressure vacuum state is drawn into the detection chamber 104 through a negative pressure machine, and the air pressure sensor 28 detects the air pressure change in the detection chamber 104, and pressurizes the pressure vessel 101 through the pressure supply and exhaust assembly 3 to maintain the pressure vessel 101 in an ultra-high pressure state, and non-destructively detects the sealing plug body 4 through the phased array probe 27 to ensure the sealing performance of the sealing plug body 4 under ultra-high pressure. If the air pressure sensor 28 detects air pressure changes or the phased array probe 27 detects an abnormality, it indicates that there is a leak in the sealing plug body 4, and the sealing performance of the sealing plug body 4 is detected; and the controller can upload the detected data to the server, and then perform data analysis through the finite element analysis model.

[0041] After the test is completed, the pressure vessel 101 is exhausted through the pressure supply and exhaust assembly 3 to reduce the pressure, the drive screw 8 is rotated in the reverse direction, the radial sliding clamp 20 is loosened, the sealing plug body 4 is separated from the tank mouth 102, the cylinder cover 5 is opened, and the sealing plug body 4 is taken out to complete the entire sealing performance test process of the sealing plug body 4.

[0042] The characteristic of this structure is that only a set of hand wheel 10 structure is needed (screw tube 7 and driving screw 8). By turning the hand wheel 10, two actions are realized, axial translation and radial compression. The first action is to rotate and translate the sealing plug body 4 through the screw tube 7 to connect the sealing plug body 4 to the tank mouth 102. The second action is to push the radial sliding card plate 20 through the driving screw 8, and utilize the inclined surface between the radial sliding card plate 20 and the outer column head 2 to enable the card plate 22 to compress the plug body.

[0043] Preferably, considering that the screw tube 7 and the driving screw 8 are threadedly mounted on the cylinder cover 5, the existence of thread gaps may affect the negative pressure vacuum state in the detection chamber 104, so a sealing cover can also be provided on the outside of the cylinder cover 5, and the sealing cover is sealingly sleeved on the cylinder cover 5 to achieve sealing of the outer side of the cylinder cover 5, that is, the screw tube 7 and the driving screw tube 7 on the outer side of the cylinder cover 5 are completely covered and sealed by the sealing cover, so that the inside of the sealing cover and the detection chamber 104 are both in a negative pressure vacuum state, and the existing thread gaps will not affect the detection effect of the air pressure sensor 28.

[0044] Example 2, an ultra-high pressure container plug sealing test detection device in this embodiment is described centering on the differences from Example 1.

[0045] In this embodiment, Figure 12-13 As shown, a positioning parallel groove 193 corresponding to the radial sliding clamping plate 20 is provided on the outer side of the pad 19, and the positioning parallel groove 193 can assist the radial sliding clamping plate 20 in positioning and paralleling. The above description is only a preferred embodiment of the present invention, and does not limit the present invention. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sealing test device for an ultra-high pressure container plug, characterized in that: It includes a detection cylinder, a pressure supply and exhaust assembly, a phased array probe, a sealing plug body and a pressing assembly. The detection cylinder includes a pressure vessel for filling high pressure. A detection chamber is formed between the pressure vessel and the detection cylinder. An air pressure sensor for detecting air pressure changes is arranged in the detection chamber. The pressure supply and exhaust assembly is used to supply pressure and exhaust air to the pressure vessel, and a cylinder cover is movably installed at the end of the detection cylinder. The clamping assembly includes a fixed screw sleeve arranged coaxially with the cylinder cover, a screw tube is rotatably mounted in the fixed screw sleeve, a driving screw is rotatably mounted in the screw tube, and a translation push tube is mounted on the inner end of the screw tube, a sleeve connection portion is provided between the translation push tube and the screw tube to prevent the translation push tube from rotating, and a disc spring is provided at the sleeve connection portion to compensate for the axial movement of the translation push tube, and the rotation of the screw tube can synchronously push the translation push tube axially; a plurality of inner column heads are evenly distributed radially on the inner side surface of the cylinder cover, and a fixed disc guide on the outer circumferential side of the translation push tube is sleeved on the inner column head, The inner end of the translation push tube is fixedly connected with a pad, and the pad guide is sleeved on the inner column head. The outer side surface of the pad is sleeved with multiple radial sliding clamps along the radial sliding. At the same time, each radial sliding clamp is elastically constrained by an annular spring, and a lower conical surface section is opened at the bottom of the radial sliding clamp. A pushing cone head is installed at the inner end of the driving screw. The pushing cone head can push the radial sliding clamp through the lower conical surface section, so that the radial sliding clamp moves radially on the pad, and a flat hole corresponding to the radial sliding clamp is radially opened on the translation push tube; The sealing plug body is guided by the inner column head and is parallelly sleeved on the inner side of the pad. The phased array probes are evenly distributed in the detection grooves on the inner side of the pad. The sealing plug body can be detected by the phased array probe. A pressure sensor is provided on the ring seat of the pressure vessel mouth, and outer column heads corresponding to each inner column head are connected to the ring seat. Concave flat grooves are provided on both sides of the outer column head. An upper inclined surface section is provided on the top of the radial sliding clamp, and a matching inclined surface section is provided on the front side of the concave flat groove. When the radial sliding clamp moves radially, the upper inclined surface section and the matching inclined surface section cooperate with each other, so that the radial sliding clamp can push the pad inward to seal the sealing plug body to the mouth of the pressure vessel. After the cylinder cover is closed, the spiral tube can control the axial translation of the sealing plug body to make the sealing plug body seal and dock with the pressure vessel mouth. At the same time, the driving screw can push the radial sliding clamp so that the radial sliding clamp radially compresses and seals the sealing plug body, and the sealing performance of the sealing plug body is tested.

2. The ultra-high pressure container plug sealing test detection device according to claim 1, characterized in that: The radial sliding card plate is composed of a sliding block and a card plate. The card plate is symmetrically connected to the top of the sliding block. A card slot is formed between adjacent card plates. The card slot can constrain the card sleeve on the concave flat groove. The sliding block is slidably sleeved in the constraint groove of the pad, so that the radial sliding card plate can move radially on the pad, and the upper inclined surface section is opened at the top of the card plate, and the lower conical surface section is opened at the bottom of the sliding block.

3. The ultra-high pressure container plug sealing test detection device according to claim 1, characterized in that: A positioning parallel groove corresponding to the radial sliding clamping plate is arranged on the outer side surface of the pad, and the positioning parallel groove can assist the radial sliding clamping plate in positioning and parallelism.

4. The ultra-high pressure container plug sealing test detection device according to claim 1, characterized in that: The fixed disc is fixedly connected to the translation push tube, and a guide tube is fixedly sleeved on the fixed disc. The fixed disc is guided and sleeved on the inner column head through the guide tube.

5. The ultra-high pressure container plug sealing test detection device according to claim 1, characterized in that: The sleeve connection part includes a sleeve connection ring groove formed on the screw tube, and a sleeve connection ring platform sleeved with the sleeve connection ring groove is provided in the translation push tube. The translation push tube can slide axially in the sleeve connection ring groove of the screw tube through the sleeve connection ring platform. Through the mutual cooperation between the sleeve connection ring groove and the adjustment ring platform, the screw tube can push the translation push tube to move axially when it rotates; the disc spring is sleeved between the sleeve connection ring platform and the sleeve connection ring groove.

6. The ultra-high pressure container plug sealing test detection device according to claim 1, characterized in that: The pressure supply and exhaust assembly includes a booster pump for pressurizing the pressure container. The booster pump is connected to the pressure container through a pipeline, and a pressure gauge is arranged on the pipeline, and an exhaust valve is arranged on the pressure container.

Images