Self-adaptive high-pressure dynamic sealing performance detection device

Abstract

The invention discloses a self-adaptive high-pressure dynamic sealing performance detection device, and relates to the technical field of sealing testing. According to the self-adaptive high-pressure dynamic sealing performance detection device, the sealing performance of a flange pipeline connecting piece under the high-pressure medium conveying dynamic working condition is detected through the arrangement of the lifting expansion assembly, and the lifting expansion assembly can control the laser gas imager to change from the original vertical in-situ state to the original high-pressure medium conveying dynamic working condition to the original high-pressure medium conveying dynamic working condition. The device is switched to a state of keeping horizontal irradiation with a flange pipeline connecting piece, after volatile liquid gasoline, a solvent or a gas medium irradiates a flange area through laser, a leakage medium can reflect a specific spectrum, and an external display instrument displays a leakage position in a real-time imaging mode. Therefore, whether the flange pipeline connecting piece leaks under the dynamic working condition or not can be quickly found, sealing performance detection processing can be carried out on flange pipeline connecting pieces of various specifications by changing the position of the laser gas imager, and performance detection data under the dynamic working condition is more universal.

Description

Technical Field

[0001] This invention relates to the field of sealing testing technology, specifically to an adaptive high-pressure dynamic sealing performance testing device. Background Technology

[0002] High-pressure dynamic sealing devices (such as shaft seals used in reciprocating pumps and rotating equipment) are core components of fluid machinery, and their performance directly affects the operating efficiency and safety of the equipment. In existing technologies, adaptive seals (such as sealing structures using a combination of elastic elements like O-rings and triangular rings) can automatically adjust the sealing specific pressure within a certain pressure range, improving the sealing effect.

[0003] Regarding the aforementioned technologies, it is believed that in actual operation, the evaluation of the sealing performance (such as leakage rate and wear condition) of such sealing devices relies heavily on periodic offline disassembly and testing, which cannot reflect the sealing status under changing operating conditions in real time and lacks predictive maintenance capabilities. Although some technical solutions attempt to build test fixtures to conduct high-temperature and high-pressure vibration tests on static seals such as installation edges and use cooling tanks to cool the leaked gas before measurement, this system is complex and difficult to directly apply to online monitoring of dynamically operating sealing devices. Existing online detection technologies mostly focus on monitoring a single parameter (such as temperature) and lack a comprehensive evaluation of sealing performance.

[0004] The pump body and the delivery pipeline are connected by a sealing flange. However, the sealing state during dynamic operation and the sealing effect during static operation will differ. Only when the dynamic sealing effect remains stable can the overall airtightness of the delivery be demonstrated. During long-term operation, the sealing ring or connecting bolts on the sealing flange of the pump body may wear or loosen, leading to the risk of leakage at the connection. This is especially true when conveying toxic and harmful media. The earlier the leakage problem is detected, the smaller the impact on the subsequent process. The sealing performance test under dynamic operating conditions has become a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide an adaptive high-pressure dynamic sealing performance testing device, which solves the problems mentioned in the background art.

[0006] To achieve this objective, the present invention adopts the following technical solution: An adaptive high-pressure dynamic sealing performance testing device includes a pump body and a flange pipe connection installed at the outer end of the pump body. An L-shaped movable seat is provided on the right side of the pump body. A lifting and expansion component for laser irradiation detection of volatile liquids is installed on the outer wall of the L-shaped movable seat. A fixing component for clamping and positioning the flange pipe connection is rotatably installed on the rear wall of the L-shaped movable seat. A transmission component is fixedly installed on the outer walls of the L-shaped movable seat. A detection component for detecting the purity of the medium and trace leaks is provided on the top wall of the L-shaped movable seat.

[0007] Furthermore, the lifting expansion assembly includes a servo motor fixedly installed on the top of the L-shaped movable seat. The L-shaped movable seat has an ear groove in the middle, and an adjusting screw is rotatably installed on the inner wall of the ear groove. The power shaft of the servo motor passes through the L-shaped movable seat through a bearing and is fixedly connected to the top of the adjusting screw. A slide block is screwed onto the outer wall of the adjusting screw. When the adjusting screw rotates in the ear groove, it drives the slide block to move linearly along its outer wall.

[0008] Furthermore, an embedded groove is provided on both sides of the inner wall of the L-shaped movable seat, and a positioning rod is fixedly installed on the inner wall of each embedded groove. A second slide is slidably installed on the outer wall of each positioning rod. The outer walls of the second slide and the first slide, which are located on the same horizontal line, are hinged to the same lifting seat.

[0009] Furthermore, connecting seats are hinged to the top of the inner wall of the L-shaped movable seat at the position corresponding to the lifting seat. Telescopic rods are installed on both sides of the rear wall of the connecting seats. Mounting plates are hinged to the extension ends of the telescopic rods. The bottom end of the mounting plate is fixedly connected to the outer wall of the lifting seat. A laser gas imager is installed on the outer wall of the mounting plate. The laser gas imager is designed for volatile liquid gasoline, solvents, or gaseous media. After the laser irradiates the flange area, the leaking medium will reflect a specific spectrum, and the external display instrument will display the leak location in real time.

[0010] Furthermore, the fixing component includes a mounting groove formed on the rear wall of the L-shaped movable seat. A steering shaft is rotatably mounted on the inner wall of the mounting groove. Both ends of the steering shaft are fixedly connected to the transmission component through the L-shaped movable seat via bearings. A bogie is fixedly mounted on the outer wall of the steering shaft. The bottom of the bogie rotates in the inner wall of the mounting groove. Hydraulic support rods are hinged to both sides of the inner wall of the L-shaped movable seat. The movable ends of the hydraulic support rods are hinged to the outer wall of the bogie. After the hydraulic support rods are retracted, they control the bogie to maintain a 90-degree vertical state.

[0011] Furthermore, a U-shaped seat is fixedly installed on the top of the front wall of the bogie, a rotating shaft is installed on the inner wall of the U-shaped seat, scissor-type snap-fit ​​arms are installed on both sides of the outer wall of the rotating shaft, an extension arm is fixedly installed at the rear end of each scissor-type snap-fit ​​arm, a common connecting plate is fixedly installed between each extension arm located on the same horizontal line, and a support spring is fixedly installed on the inner wall of each extension arm.

[0012] Furthermore, the inner wall of each scissor-type snap-fit ​​arm is provided with an anti-slip pad. The inner wall of the anti-slip pad is in contact with the outer wall of the flange pipe connector. Under the support of the support spring, the extension arm, the scissor-type snap-fit ​​arm, and the anti-slip pad are pushed to snap and fix the flange pipe connector to prevent it from falling off.

[0013] Furthermore, the transmission assembly includes a transmission gear fixedly installed on the outer end of the steering shaft. Each transmission gear is meshed with a transmission rack. Each transmission rack has a limit groove inside. Several limit blocks are evenly slidably arranged on the inner wall of the limit groove. The bottom end of each limit block is fixedly connected to the inner wall of the L-shaped movable seat.

[0014] Furthermore, the detection component includes an L-shaped connector fixedly installed on the top wall of the transmission rack. The bottom end of each L-shaped connector is fixedly installed with the same lifting seat. The top wall of the lifting seat has a lifting plane, and the front wall of the lifting seat has a lifting slope.

[0015] Furthermore, an L-shaped positioning seat is fixedly installed on the inner wall of the L-shaped movable seat and at the position corresponding to the lifting seat. The outer wall of the L-shaped positioning seat is in contact with the lifting seat. A slide rod is slidably installed on the inner wall of the L-shaped positioning seat. A lifting roller is installed at the bottom end of the slide rod. A mass spectrometer leak detector probe is fixedly installed at the top end of the slide rod. This probe is used to collect the composition and concentration of the gas around the flange for instrument analysis, and to accurately determine whether there is a leak and the leak rate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This adaptive high-pressure dynamic sealing performance testing device, through the setting of the lifting expansion component, tests the sealing performance of flange pipe connections under dynamic working conditions of high-pressure medium transportation. The lifting expansion component can control the laser gas imager to switch from its original vertical position to a horizontal irradiation state with the flange pipe connection. For volatile liquid gasoline, solvents or gaseous media, after the laser irradiates the flange area, the leaking medium will reflect a specific spectrum, and the external display instrument will display the leak location in real time, so as to quickly detect whether the flange pipe connection has a leakage problem under dynamic working conditions. By changing the position of the laser gas imager, the sealing performance testing of flange pipe connections of various specifications can be performed, and the performance test data under dynamic working conditions is more universal.

[0017] 2. This adaptive high-pressure dynamic sealing performance testing device, through the linkage of the transmission component and the detection component, drives the transmission component to perform component transmission when the fixed component rotates, and further controls the position of the mass spectrometer leak detector probe in the detection component close to the flange pipe connection. This allows the mass spectrometer leak detector probe to collect gas around the flange for instrument analysis of the medium composition and concentration, accurately determining whether there is a leak and the leak rate. It has wide applications, especially in precision measurement work. When the fixed component returns to its original position, it will drive the mass spectrometer leak detector probe back to its original position away from the flange pipe connection through the transmission component, which protects the mass spectrometer leak detector probe from collision when pushing the L-shaped movable seat into the bottom of the flange pipe connection.

[0018] 3. The adaptive high-pressure dynamic sealing performance testing device has a fixed component that drives the scissor clamp arm to rotate synchronously to the corresponding position of the flange pipe connector when the bogie is rotated. After pressing the connecting plate and the extension arm, the scissor clamp arm can be opened and clamped onto the conveying pipeline of the flange pipe connector to complete the clamping and positioning. This can install and position the entire testing device to prevent displacement during testing.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0022] Figure 1 This is a schematic diagram of the overall external structure of the present invention; Figure 2 This is a side view of the external structure of the present invention; Figure 3 This is a combined diagram of the L-shaped movable seat, the lifting and expansion assembly, the fixing assembly, and the transmission assembly of the present invention; Figure 4 This is a schematic diagram of the external structure of the L-shaped movable seat and the lifting expansion assembly of the present invention; Figure 5 This is an exploded view of the internal structure of the lifting and expansion component of the present invention; Figure 6 This is a schematic diagram of the combination of the fixing component and the detection component of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the combination of the fixing component and the detection component of the present invention. Figure 2 ; Figure 8 The internal structure of the fixed component of the present invention exploded. Figure 1 ; Figure 9 The internal structure of the fixed component of the present invention exploded. Figure 2 ; Figure 10 This is a schematic diagram of the combination of the transmission component and the detection component of the present invention. Figure 1 ; Figure 11 This is a schematic diagram of the combination of the transmission component and the detection component of the present invention. Figure 2 .

[0023] Illustrations: 1. Pump body; 2. L-shaped movable seat; 3. Lifting expansion assembly; 31. Servo motor; 32. Adjusting screw; 33. Positioning rod; 34. Slide 2; 35. Slide 1; 36. Laser gas imager; 37. Ear slot; 38. Embedded slot; 39. Lifting seat; 310. Connecting seat; 311. Telescopic rod; 312. Mounting plate; 4. Fixing assembly; 41. Bogie; 42. Hydraulic support rod; 43. U-shaped seat; 44. Rotating shaft; 45. Scissor-type snap-fit ​​arm; 46. ​​Connecting plate; 47. Support spring; 48. Anti-slip pad; 49. Extension arm; 410. Steering shaft; 411. Mounting groove; 5. Flange pipe connector; 6. Transmission assembly; 61. Transmission gear; 62. Transmission rack; 63. Limiting groove; 64. Limiting block; 7. Detection assembly; 71. L-shaped connector; 72. Lifting seat; 73. Lifting ramp; 74. Lifting plane; 75. L-shaped positioning seat; 76. Slide rod; 77. Lifting roller; 78. Mass spectrometer leak detector probe. Detailed Implementation

[0024] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0025] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0026] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] Please see Figures 1-11This invention provides an adaptive high-pressure dynamic sealing performance testing device, including a pump body 1 and a flange pipe connector 5 installed on the outer end of the pump body 1. An L-shaped movable seat 2 is provided on the right side of the pump body 1. A lifting expansion component 3 for laser irradiation detection of volatile liquids is installed on the outer wall of the L-shaped movable seat 2. A fixing component 4 for clamping and positioning the flange pipe connector 5 is rotatably installed on the rear wall of the L-shaped movable seat 2. A transmission component 6 is fixedly installed on the outer walls of the L-shaped movable seat 2. A detection component 7 for detecting purity media and trace leaks is provided on the top wall of the L-shaped movable seat 2.

[0028] In this embodiment, when the pump body 1 is conveying the medium through the flange pipe connection 5, dynamic working conditions are formed, and the L-shaped movable seat 2 is inserted into the bottom position of the flange pipe connection 5; First, rotate the fixing component 4, which can clamp and fix the flange pipe connector 5. The clamping diameter of the fixing component 4 can be adapted, and it can be connected and matched with flange pipe connectors 5 of various diameters. When the fixed component 4 is adjusting the direction, it will control the detection component 7 to detect the position of the flange pipe connection 5 through the component transmission component 6. At the same time, it controls the lifting expansion component 3 to slowly open and perform laser detection near the top position of the flange pipe connection 5.

[0029] Specifically, the lifting expansion assembly 3 includes a servo motor 31 fixedly installed at the top of the L-shaped movable seat 2. The L-shaped movable seat 2 has an ear groove 37 in the middle. An adjusting screw 32 is rotatably installed on the inner wall of the ear groove 37. The power shaft of the servo motor 31 passes through the L-shaped movable seat 2 through a bearing and is fixedly connected to the top of the adjusting screw 32. A slide block 35 is screwed onto the outer wall of the adjusting screw 32. When the adjusting screw 32 rotates in the ear groove 37, it drives the slide block 35 to move linearly along its outer wall.

[0030] In this embodiment, the servo motor 31 drives the adjusting screw 32 to rotate on the inner wall of the ear slot 37, thereby driving the slide block 35 to move linearly along the outer wall of the adjusting screw 32 on the inner wall of the ear slot 37.

[0031] Specifically, the inner walls of the L-shaped movable seat 2 are provided with embedded grooves 38 on both sides. The inner walls of the embedded grooves 38 are fixedly installed with positioning rods 33. The outer walls of the positioning rods 33 are slidably installed with slide blocks 34. The outer walls of slide blocks 34 and slide blocks 35, which are located on the same horizontal line, are hinged to the same lifting seat 39.

[0032] In this embodiment, when slide 35 controls the movement of lifting seat 39, it will control slide 34 to move linearly along the outer wall of positioning rod 33 in the inner wall of inner groove 38, which can limit the movement position of lifting seat 39 and prevent lifting deviation.

[0033] Specifically, connecting seats 310 are hinged to the top of the inner wall of the L-shaped movable seat 2 at the position corresponding to the lifting seat 39. Telescopic rods 311 are installed on both sides of the rear wall of the connecting seat 310. Mounting plates 312 are hinged to the extension ends of the telescopic rods 311. The bottom end of the mounting plate 312 is fixedly connected to the outer wall of the lifting seat 39. A laser gas imager 36 is installed on the outer wall of the mounting plate 312. The laser gas imager 36 is designed for volatile liquid gasoline, solvents or gaseous media. After the laser irradiates the flange area, the leaking medium will reflect a specific spectrum, and the external display instrument will display the leak location in real time.

[0034] In this implementation scheme, when the lifting seat 39 rises, it will drive the mounting plate 312 and the laser gas imager 36 closer to the location of the flange pipe connection 5. The mounting plate 312 will drive the hinged telescopic rod 311 to extend towards the location of the flange pipe connection 5, and drive the connecting seat 310 to deflect accordingly. The laser gas imager 36 will detect possible leaks in the flange pipe connection 5 in real time. If a leak is detected, a signal can be fed back to the external controller. The external controller will then activate the emergency procedure to alert the on-duty personnel to handle the flange pipe connection 5 at the leak point.

[0035] Specifically, the fixed component 4 includes a mounting groove 411 opened on the rear wall of the L-shaped movable seat 2. A steering shaft 410 is rotatably mounted on the inner wall of the mounting groove 411. Both ends of the steering shaft 410 pass through the L-shaped movable seat 2 and are fixedly connected to the transmission component 6 via bearings. A bogie 41 is fixedly mounted on the outer wall of the steering shaft 410. The bottom of the bogie 41 rotates in the inner wall of the mounting groove 411. Hydraulic support rods 42 are hinged to both sides of the inner wall of the L-shaped movable seat 2. The movable ends of the hydraulic support rods 42 are hinged to the outer wall of the bogie 41. After the hydraulic support rods 42 are retracted, they control the bogie 41 to maintain a 90-degree vertical state.

[0036] In this embodiment, when it is necessary to open the fixing component 4, the steering shaft 410 is rotated in the mounting groove 411 by rotating the bogie 41, which in turn causes the hydraulic support rod 42 to gradually retract. After the bogie 41 is kept in a vertical state, the hydraulic support rod 42 provides abutment support. The hydraulic support rod 42 has a telescopic self-locking function.

[0037] Specifically, a U-shaped seat 43 is fixedly installed on the top of the front wall of the bogie 41. A rotating shaft 44 is installed on the inner wall of the U-shaped seat 43. Scissor-type snap-fit ​​arms 45 are installed on both sides of the outer wall of the rotating shaft 44. An extension arm 49 is fixedly installed at the rear end of each scissor-type snap-fit ​​arm 45. The same connecting plate 46 is fixedly installed between the extension arms 49 located on the same horizontal line. A support spring 47 is fixedly installed on the inner wall of each extension arm 49.

[0038] In this embodiment, while rotating the bogie 41, the connecting plate 46 and the extension arm 49 are pressed simultaneously, thereby controlling the scissor clamp arm 45 to rotate and open around the pivot 44. After the scissor clamp arm 45 is rotated and opened, it clamps and fixes the outer wall of the matching flange pipe connector 5 to prevent it from falling off.

[0039] Specifically, the inner wall of the scissor-type clamp arm 45 is provided with anti-slip pads 48. The inner wall of the anti-slip pads 48 is in contact with the outer wall of the flange pipe connector 5. Under the support of the support spring 47, the extension arm 49, the scissor-type clamp arm 45 and the anti-slip pads 48 are pushed to clamp and fix the flange pipe connector 5 to prevent it from falling off.

[0040] In this embodiment, the inner wall of the scissor-type clamp arm 45 is provided with anti-slip pads 48, which can increase the contact friction with the flange pipe connector 5 and improve its clamping stability.

[0041] Specifically, the transmission assembly 6 includes a transmission gear 61 fixedly installed on the outer end of the steering shaft 410. The transmission gear 61 is meshed with a transmission rack 62. Each transmission rack 62 has a limit groove 63 inside. Several limit blocks 64 are evenly slidably arranged on the inner wall of the limit groove 63. The bottom end of each limit block 64 is fixedly connected to the inner wall of the L-shaped movable seat 2.

[0042] In this embodiment, when the steering shaft 410 rotates, it drives the transmission gear 61 to mesh synchronously and control the movement of the transmission rack 62, so that the limiting groove 63 on the transmission rack 62 slides linearly along the outer wall of the limiting block 64, which can limit the position of the transmission rack 62 and prevent position deviation.

[0043] Specifically, the detection component 7 includes an L-shaped connector 71 fixedly installed on the top wall of the transmission rack 62. The bottom end of each L-shaped connector 71 is fixedly installed with the same lifting seat 72. The top wall of the lifting seat 72 has a lifting plane 74, and the front wall of the lifting seat 72 has a lifting slope 73.

[0044] In this embodiment, when the transmission rack 62 is in motion, it will drive the L-shaped connector 71 and the lifting seat 72 to approach the position of the lifting roller 77. As it continues to move, the lifting roller 77 rises along the lifting slope 73 to the lifting plane 74 and remains unchanged.

[0045] Specifically, an L-shaped positioning seat 75 is fixedly installed on the inner wall of the L-shaped movable seat 2 and at the position corresponding to the lifting seat 72. The outer wall of the L-shaped positioning seat 75 fits against the lifting seat 72. A slide rod 76 is slidably installed on the inner wall of the L-shaped positioning seat 75. A lifting roller 77 is installed at the bottom end of the slide rod 76. A mass spectrometer leak detector probe 78 is fixedly installed at the top end of the slide rod 76. This probe is used to collect the gas around the flange and analyze the composition and concentration of the medium to accurately determine whether there is a leak and the leak rate.

[0046] In this implementation scheme, when the lifting seat 72 moves, it will approach and contact the L-shaped positioning seat 75 to prevent positional movement. At the same time, when the lifting roller 77 is under force and moves along the lifting inclined surface 73, it will drive the slide rod 76 to rise along the L-shaped positioning seat 75 and drive the mass spectrometer leak detector probe 78 to approach the location of the flange pipe connection 5 for detection. The mass spectrometer leak detector probe 78 will detect possible leaks in the flange pipe connection 5 in real time. If a leak is detected, the external mass spectrometer leak detector can send a signal to the external controller, which will then activate the emergency procedure to alert the on-duty personnel to handle the leak in the flange pipe connection 5.

[0047] The working principle of this device is as follows: the external controller and power supply are connected to the servo motor 31, the laser gas imager 36, and the external mass spectrometer leak detector. Positioning and steering: Under dynamic working conditions, when the pump body 1 is working, it starts to transmit the medium through the flange pipe connection 5. When it is necessary to detect the flange connection position of the flange pipe connection 5, the movable L-shaped seat 2 drives the fixed component 4 to pass through the bottom of the flange pipe connection 5. Then, the bogie 41 rotates and drives the steering shaft 410 to start turning inside the mounting groove 411. This causes the bogie 41 to drive the hydraulic support rod 42 to gradually retract from the extended state at the movable end until the bogie 41 is perpendicular to the L-shaped seat 2. The hydraulic support rod 42 provides stable support for the vertical state of the bogie 41. Positioning and locking: When rotating the bogie 41, the connecting plate 46 is pressed simultaneously, causing the extension arms 49 to move closer together. This compresses the support spring 47 within the U-shaped seat 43, causing the extension arms 49 and the scissor-type locking arms 45 to rotate and open around the pivot 44. This allows the scissor-type locking arms 45 and the anti-slip pad 48 to align with the outer wall of the flange pipe connector 5. After the connecting plate 46 is released, the elasticity of the support spring 47 pushes the extension arms 49 and the scissor-type locking arms 45 to rotate on the pivot 44, thus locking the scissor-type locking arms 45 with the anti-slip pad 48 to complete the positioning and locking process. Mass spectrometer leak detector probe 78 detection: When the bogie 41 is rotated, the steering shaft 410 will rotate inside the mounting groove 411, which will control the transmission gear 61 to drive the meshing transmission rack 62 to move linearly from the outward extension state towards the direction of the rising expansion component 3, so that the limiting groove 63 on the transmission rack 62 slides linearly along the outer wall of the limiting block 64, which can limit the movement position of the transmission rack 62; As the transmission rack 62 moves, it controls the L-shaped connector 71 and the lifting seat 72 to move towards the L-shaped positioning seat 75. As the lifting seat 72 gets closer, the lifting roller 77 at the bottom of the slide rod 76 gradually comes into contact with the lifting inclined surface 73. During the process of the lifting seat 72 getting closer, the lifting roller 77 rises along the outer wall of the lifting inclined surface 73 to the surface position of the lifting plane 74 due to the inclined setting of the lifting inclined surface 73. The lifting roller 77 pushes the slide rod 76 to move on the L-shaped positioning seat 75, thereby driving the mass spectrometer leak detector probe 78 to approach the flange connection position where the flange pipe connector 5 is located. At the same time, the lifting plane 74 contacts the L-shaped positioning seat 75 to complete the contact and limit. The laser gas imager 36 performs detection: the servo motor 31 is started to drive the adjusting screw 32 to rotate inside the ear groove 37, which in turn drives the slide 35 to slide upward along the outer wall of the adjusting screw 32 inside the ear groove 37, and controls the lifting seat 39 and the slide 34 to move upward synchronously. The slide 34 moves upward along the outer wall of the positioning rod 33 in the inner wall of the embedded groove 38. When the lifting seat 39 moves upward, it controls the mounting plate 312 and the laser gas imager 36 to move towards the top of the flange pipe connector 5. The rise of the mounting plate 312 will drive the telescopic rod 311 to initially extend outward, providing a space for the mounting plate 312. At the same time, it will drive the connecting seat 310 to rotate in the inner wall of the L-shaped movable seat 2 until the mounting plate 312 drives the laser gas imager 36 to be placed horizontally on the top of the flange pipe connector 5. The flange connection position of flange pipe connection 5 is detected: the mass spectrometer leak detector probe 78 is used to collect the gas around the flange and analyze the composition and concentration of the medium to accurately determine whether there is a leak and the leak rate. In addition, the laser gas imager 36 is used for volatile liquid gasoline, solvent or gas medium. After the laser irradiates the flange area, the leaking medium will reflect a specific spectrum. The external display instrument displays the leak location in real time. By using the combination of the two methods, the presence of a leak can be detected during the transmission of flange pipe connection 5 under working conditions, and the sealing performance of flange pipe connection 5 can be tested. Since the opening arc of the scissor-type clamping arm 45 and the anti-slip pad 48 is adjustable, it can adaptively clamp and fix flange pipe connectors 5 of various specifications. After the positioning and clamping are completed, the linkage detection component 7 and the lifting expansion component 3 can continue to perform sealing performance testing on the flange pipe connector 5.

[0048] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adaptive high-pressure dynamic sealing performance testing device, comprising a pump body (1) and a flange pipe connector (5) installed at the outer end of the pump body (1), characterized in that: The pump body (1) is provided with an L-shaped movable seat (2) on the right side. The outer wall of the L-shaped movable seat (2) is equipped with a lifting expansion component (3) for laser irradiation detection of volatile liquids. The rear wall of the L-shaped movable seat (2) is rotatably equipped with a fixing component (4) for clamping and positioning flange pipe connectors (5). The outer walls of the L-shaped movable seat (2) are all fixedly equipped with transmission components (6). The top wall of the L-shaped movable seat (2) is provided with a detection component (7) for detecting purity media and trace leaks.

2. The adaptive high-pressure dynamic sealing performance testing device according to claim 1, characterized in that: The lifting expansion assembly (3) includes a servo motor (31) fixedly installed at the top of the L-shaped movable seat (2). The L-shaped movable seat (2) has an ear groove (37) in the middle. An adjusting screw (32) is rotatably installed on the inner wall of the ear groove (37). The power shaft of the servo motor (31) passes through the L-shaped movable seat (2) through a bearing and is fixedly connected to the top of the adjusting screw (32). A slide block (35) is screwed onto the outer wall of the adjusting screw (32). When the adjusting screw (32) rotates in the ear groove (37), it drives the slide block (35) to move linearly along its outer wall.

3. The adaptive high-pressure dynamic sealing performance testing device according to claim 2, characterized in that: The L-shaped movable seat (2) has an embedded groove (38) on both sides of its inner wall. The inner wall of the embedded groove (38) is fixedly installed with a positioning rod (33). The outer wall of the positioning rod (33) is slidably installed with a slide seat (34). The outer walls of the slide seat (34) and the slide seat (35) located on the same horizontal line are hinged to the same lifting seat (39).

4. The adaptive high-pressure dynamic sealing performance testing device according to claim 1, characterized in that: The L-shaped movable seat (2) is hinged with a connecting seat (310) at the top of the inner wall corresponding to the lifting seat (39). The connecting seat (310) is mounted with telescopic rods (311) on both sides of the rear wall. The extension end of the telescopic rods (311) is hinged with an mounting plate (312). The bottom end of the mounting plate (312) is fixedly connected to the outer wall of the lifting seat (39). The outer wall of the mounting plate (312) is equipped with a laser gas imager (36). The laser gas imager (36) is used for volatile liquid gasoline, solvent or gaseous media. After the laser irradiates the flange area, the leaking medium will reflect a specific spectrum. The external display instrument displays the leak location in real time.

5. The adaptive high-pressure dynamic sealing performance testing device according to claim 1, characterized in that: The fixed component (4) includes a mounting groove (411) opened on the rear wall of the L-shaped movable seat (2). A steering shaft (410) is rotatably mounted on the inner wall of the mounting groove (411). Both ends of the steering shaft (410) are fixedly connected to the transmission component (6) through the L-shaped movable seat (2) via bearings. A bogie (41) is fixedly mounted on the outer wall of the steering shaft (410). The bottom of the bogie (41) rotates in the inner wall of the mounting groove (411). Hydraulic support rods (42) are hinged on both sides of the inner wall of the L-shaped movable seat (2). The movable ends of the hydraulic support rods (42) are hinged to the outer wall of the bogie (41). After the hydraulic support rods (42) retract, they control the bogie (41) to maintain a 90-degree vertical state.

6. The adaptive high-pressure dynamic sealing performance testing device according to claim 5, characterized in that: A U-shaped seat (43) is fixedly installed on the top of the front wall of the bogie (41). A rotating shaft (44) is installed on the inner wall of the U-shaped seat (43). Scissor-type snap-fit ​​arms (45) are installed on both sides of the outer wall of the rotating shaft (44). An extension arm (49) is fixedly installed at the rear end of each scissor-type snap-fit ​​arm (45). The same connecting plate (46) is fixedly installed between the extension arms (49) located on the same horizontal line. A support spring (47) is fixedly installed on the inner wall of each extension arm (49).

7. The adaptive high-pressure dynamic sealing performance testing device according to claim 6, characterized in that: The inner wall of each scissor-type snap-fit ​​arm (45) is provided with an anti-slip pad (48). The inner wall of the anti-slip pad (48) is in contact with the outer wall of the flange pipe connector (5). Under the support of the support spring (47), the extension arm (49), the scissor-type snap-fit ​​arm (45), and the anti-slip pad (48) are pushed to snap and fix the flange pipe connector (5) to prevent it from falling off.

8. The adaptive high-pressure dynamic sealing performance testing device according to claim 1, characterized in that: The transmission assembly (6) includes a transmission gear (61) fixedly installed on the outer end of the steering shaft (410). The transmission gear (61) is meshed with a transmission rack (62). The transmission rack (62) has a limit groove (63) inside. A number of limit blocks (64) are evenly slidably arranged on the inner wall of the limit groove (63). The bottom end of the limit block (64) is fixedly connected to the inner wall of the L-shaped movable seat (2).

9. The adaptive high-pressure dynamic sealing performance testing device according to claim 1, characterized in that: The detection component (7) includes an L-shaped connector (71) fixedly installed on the top wall of the transmission rack (62). The bottom end of each L-shaped connector (71) is fixedly installed with the same lifting seat (72). The top wall of the lifting seat (72) is provided with a lifting plane (74), and the front wall of the lifting seat (72) is provided with a lifting slope (73).

10. The adaptive high-pressure dynamic sealing performance testing device according to claim 1, characterized in that: L-shaped positioning seats (75) are fixedly installed on the inner wall of the L-shaped movable seat (2) and at the position corresponding to the lifting seat (72). The outer wall of the L-shaped positioning seat (75) is in contact with the lifting seat (72). A slide rod (76) is slidably installed on the inner wall of the L-shaped positioning seat (75). A lifting roller (77) is installed at the bottom end of the slide rod (76). A mass spectrometer leak detector probe (78) is fixedly installed at the top end of the slide rod (76) to collect the gas around the flange, analyze the medium composition and concentration, and accurately determine whether there is a leak and the leak rate.

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