An ultrahigh pressure helium leak detection apparatus

Abstract

The application discloses a kind of ultra-high pressure helium leakage detection equipment, including adjusting mechanism, sealing mechanism and detection mechanism, the sealing mechanism is arranged in the adjusting mechanism, the detection mechanism is arranged above the sealing mechanism;The sealing mechanism includes sealing box, detection cavity, air extraction mechanism, gas guide pipe, fixed flange one, fixed plate, handle, slide rail and quick-change mechanism.This scheme effectively overcomes the deficiencies of prior art in moving, detecting, maintaining and the like, realizes convenient movement, accurate detection, easy maintenance, high stability, improves detection quality and production efficiency, reduces safety and cost risk.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of helium leakage detection, specifically to an ultrahigh-pressure helium leakage detection device. BACKGROUND

[0002] The ultrahigh-pressure helium leakage detection device is a precision instrument specially used for detecting helium leakage in high-pressure or ultrahigh-pressure systems. Its core function is to capture and analyze the leaked helium through specific technical means, thereby locating the leakage point and evaluating the leakage rate to ensure the safety, sealing, and operating efficiency of the relevant system.

[0003] The existing ultrahigh-pressure helium leakage detection device is generally large in size and inconvenient to move in actual application. Its fixed height directly causes incomplete detection coverage (high and low position blind area, high risk of missed detection), poor universality (difficult to adapt to different height workpieces), and additional adjustment of workpieces or operating posture, resulting in low detection efficiency, high safety risk, and high probability of misjudgment and missed judgment, affecting detection quality and production process. In addition, in terms of maintenance, the ultrahigh-pressure helium leakage detection device that is inconvenient to move cannot be transferred to the equipment fault point or designated maintenance area as needed during maintenance, and the core components need to be disassembled and transported, increasing the difficulty and cost of maintenance, and cannot be flexibly adjusted in position to adapt to different height and angle maintenance requirements, which may lead to incomplete maintenance and may further damage the precision components during transportation, affecting the subsequent detection accuracy of the equipment. Finally, the device structure does not fully consider the maintenance convenience, which may cause tedious disassembly steps and long time consumption.

[0004] Therefore, a solution is needed. SUMMARY

[0005] (I) Technical problems solved

[0006] In view of the deficiencies of the prior art, the present application provides an ultrahigh-pressure helium leakage detection device to solve the problems raised in the background art.

[0007] (II) Technical solutions

[0008] To achieve the above purpose, the present application is realized by the following technical solutions:

[0009] An ultrahigh-pressure helium leakage detection device, characterized in that it comprises an adjusting mechanism, a sealing mechanism, and a detection mechanism, the sealing mechanism is arranged in the middle of the adjusting mechanism, and the detection mechanism is arranged above the sealing mechanism.

[0010] The sealing mechanism comprises a sealing box, a detection cavity, a gas extraction mechanism, a gas guide pipe, a fixed flange one, a fixed plate, a handle, a slide rail and a quick change mechanism, the sealing box is in a cuboid structure, the detection cavity is arranged inside the sealing box and opens forward, the gas extraction mechanism is arranged at the upper left corner of the detection cavity, the gas guide pipe is arranged at the top of the sealing box, the fixed flange one is arranged at the top of the gas guide pipe, the fixed plates are arranged at the top of the sealing box in a left-right opposite manner, the handle is arranged on each fixed plate, the slide rails are arranged at the bottom of the detection cavity in a left-right opposite manner, and the quick change mechanism is arranged inside the detection cavity.

[0011] Preferably, the gas guide pipe is located at the right end of the top of the sealing box, the two fixed plates are both in a round rectangular structure and are located at the left and right ends of the front side of the top of the sealing box respectively, the handle is in an arc edge rectangular structure, the sealing box, the gas guide pipe and the fixed flange one are integrally formed, and the sealing box, the fixed plate and the handle are integrally formed.

[0012] Preferably, the gas extraction mechanism comprises a gas extraction box, a gas guide groove, a pump cavity, a gas extraction pipe, a fixed flange two and a gas pump, the gas guide groove is arranged at the bottom of the gas extraction box, the pump cavity is arranged inside the gas extraction box, the gas extraction pipe is arranged in a penetrating manner at the central position of the gas extraction box and extends upward, the fixed flange two is arranged at the top of the gas extraction pipe, the gas pump is arranged at the bottom of the pump cavity, and the gas extraction pipe is connected to the gas pump.

[0013] Preferably, the gas guide groove is in a swallowtail structure, the gas extraction box, the gas extraction pipe and the fixed flange two are integrally formed, the gas extraction pipe is located at the left end of the top of the sealing box and is opposite to the position of the gas guide pipe, the specification of the gas extraction pipe is consistent with that of the gas guide pipe, and the specification of the fixed flange two is consistent with that of the fixed flange one.

[0014] Preferably, the quick-change mechanism comprises a sealing plate, a sealing strip, a handle, a sliding plate, a sliding strip, side plates, a baffle, a motor, a rotating seat, a sliding block, a bidirectional screw rod, a guide strip, a limiting seat, a telescopic connecting rod and a mounting plate, the sealing plate is arranged at the front end of the inside of the detection cavity, the sealing strip is arranged on the sealing plate, the handle is arranged at the front end of the sealing plate, the sliding plate is arranged at the bottom of the rear side of the sealing plate, the sliding strip is arranged at the bottom of the sliding plate corresponding to the position of each sliding rail, the side plates are arranged at the top of the left and right ends of the sliding plate, the baffle is arranged at the top of the rear end of the sliding plate, the motor is arranged at the front end of the opposite faces of the two side plates, the rotating seat is arranged at the rear end of each side plate opposite to the motor, the sliding block is arranged between the motor and the rotating seat in an opposite manner, the bidirectional screw rod is arranged between the motor and the rotating seat through the sliding block, the guide strip is arranged inside the sliding block in an opposite manner, the limiting seat is arranged on each sliding block in an opposite manner, the telescopic connecting rod is arranged on the limiting seat, and the mounting plate is arranged at the end of the telescopic connecting rod.

[0015] Preferably, the sealing plate, the sliding plate and the side plate all have a cuboid structure, the upper left corner of the baffle is provided with a tank groove corresponding to the position of the air extraction tank, the tank groove has a rectangular structure, the sealing plate, the handle, the sliding plate, the sliding strip, the side plates and the baffle are integrally formed, the guide strip is connected with the adjacent side plate, the rotating seat, the guide strip and the side plate are integrally formed, the telescopic connecting rod is located between each pair of front and rear limiting seats and extends to the middle part of the sliding plate, the end of the telescopic connecting rod is also provided with the limiting seat, the limiting seat and the sliding block are integrally formed, and the limiting seat and the mounting plate are integrally formed.

[0016] Preferably, the mounting plate has a rectangular structure, mounting holes are uniformly arranged on the mounting plate, a rolling groove is arranged at the bottom of the mounting plate, convex plates are arranged at the front and rear ends of the rolling groove, a rolling roller one is arranged between the two convex plates, support plates are arranged on the lower half of the opposite faces of the two mounting plates in an opposite manner, the support plates have an obtuse angle structure and form a right trapezoidal structure with the mounting plate, a rolling roller two is arranged at the bottom of the support plate, and the rolling roller one and the rolling roller two have the same height.

[0017] Preferably, the adjusting mechanism comprises an adjusting tank, a telescopic cavity, a multi-section reciprocating electric push rod and a universal wheel, the adjusting tank has a cuboid structure and is arranged at the left and right ends of the sealing tank in an opposite manner, the telescopic cavity is arranged inside each adjusting tank and opens downward, the multi-section reciprocating electric push rod is arranged inside the telescopic cavity and is fixed with the top of the telescopic cavity, and the universal wheel is arranged at the bottom of the multi-section reciprocating electric push rod.

[0018] Preferably, the detection mechanism comprises a detection box, a heat dissipation dust screen, a placement cavity, a pipe groove, a limiting groove, a detection machine, a fixing mechanism, an air outlet pipe, a mounting flange one, an air return pipe and a mounting flange two, the detection box is arranged on the top of the sealing box in a rectangular structure, the width of the detection box is smaller than that of the sealing box, the heat dissipation dust screen is arranged on the top of the detection box, the placement cavity is arranged in the inside of the detection box and the opening faces forward, the pipe groove is arranged on the left and right sides of the detection box in a rectangular structure, the limiting groove is arranged at the upper and lower ends of the pipe groove in an arc structure and corresponds to the transverse position of the air guide pipe, the detection machine is arranged in the inside of the placement cavity, the fixing mechanism is arranged at the front end of the detection machine, the air outlet pipe is arranged at the right end of the detection machine and extends outward through the pipe groove and the limiting groove, the mounting flange one is arranged at the end of the air outlet pipe and is connected with the fixing flange one, the air return pipe is arranged at the left end of the detection machine opposite to the air outlet pipe and extends outward through the pipe groove and the limiting groove, and the mounting flange two is arranged at the end of the air return pipe and is connected with the fixing flange two.

[0019] Preferably, the fixing mechanism comprises a pressing groove, a fixing block, a bottom plate and a spring, the pressing groove is arranged inside the front end of the top of the sealing box and is located at the front end of the detection machine, the fixing block is arranged in the inside of the pressing groove in a right-angled trapezoidal structure, the bottom plate is arranged at the bottom of the pressing groove, and the spring is arranged between the fixing block and the bottom plate.

[0020] (Three) beneficial effects

[0021] The application provides a kind of ultra-high pressure helium leakage detection equipment.It has the following beneficial effects:

[0022] 1. For the existing equipment mobile difficult, height fixed defect, the scheme is adjusted mechanism with multiple reciprocating electric push rod + universal wheel.Electric push rod adjusts equipment height flexibly, eliminates detection blind area, reduces leakage detection risk;Universal wheel realizes convenient movement, reduces maintenance cost and component damage risk, improves detection efficiency and safety.

[0023] 2. To solve the problem that the existing equipment is not fully covered and has poor universality, the adjusting mechanism flexibly adjusts the height to adapt to different workpieces, and the quick-change mechanism adjusts the mold spacing to adapt to different products.The detection mechanism layout reasonably adapts the air pipe, and combines the detection cavity to fully cover the area, reducing the probability of misjudgment and omission.

[0024] 3. The existing equipment is difficult to maintain and disassemble, and the functional modules (adjusting, sealing and detection mechanisms are relatively independent) in the scheme are convenient for part disassembly and maintenance.The quick-change mechanism can conveniently change the mold, and the structure of the air extraction and detection mechanisms is beneficial to internal maintenance, reducing the difficulty and time consumption, and improving the thoroughness of maintenance.

[0025] 4. When the detection machine is working, the front end, the pipe groove and the dustproof screen for heat dissipation are used for multi-directional heat dissipation, so that the stable operation of the equipment is ensured; the cooperation of the mounting plate and the supporting plate in the quick change mechanism provides stability for the movement of the mold, helps to carry out accurate detection, and improves the reliability of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0027] Figure 2 It is a schematic diagram of the structure of the detection machine after moving away;

[0028] Figure 3 It is a schematic diagram of the quick change mechanism structure of the present application;

[0029] Figure 4 It is a schematic diagram of the top structure of the sliding plate of the present application;

[0030] Figure 5 It is a schematic diagram of the detailed structure of the present application Figure 4

[0031] Figure 6 It is a schematic diagram of the detailed structure of the present application Figure 5

[0032] Figure 7 It is a schematic diagram of the air extraction mechanism structure of the present application;

[0033] Figure 8 It is a schematic diagram of the fixing mechanism structure of the present application;

[0034] Figure 9 It is a schematic diagram of the adjusting mechanism structure of the present application.

[0035] ​​1-adjusting mechanism; 11-adjusting box; 12-telescopic cavity; 13-multijoint reciprocating electric push rod; 14-castor; 2-sealing mechanism; 21-sealing box; 22-detecting cavity; 23-pumping mechanism; 231-pumping box; 232-air guiding groove; 233-pump cavity; 234-pumping pipe; 235-fixed flange two; 236-air pump; 24-air guiding pipe; 25-fixed flange one; 26-fixed plate; 27-handle; 28-sliding rail; 29-fast changing mechanism; 291-sealing plate; 292-sealing strip; 293-pull handle; 294-sliding plate; 295-sliding strip; 296-side plate; 297-baffle; 2971-box groove; 298-motor; 299-rotating seat; 2910-sliding block; 2911-bidirectional screw rod; 2912-guiding strip; 2913-limiting seat; 2914-telescopic connecting rod; 2915-mounting plate; 2916-mounting hole; 2917-rolling groove; 2918-protruding plate; 2919-roller one; 2920-supporting plate; 2921-roller two; 3-detecting mechanism; 31-detecting box; 32-heat radiating and dust preventing net; 33-arranging cavity; 34-pipe groove; 35-limiting groove; 36-detecting machine; 37-fixing mechanism; 371-pressing groove; 372-fixing block; 373-bottom plate; 374-spring; 38-exhaust pipe; 39-mounting flange one; 310-return pipe; 311-mounting flange two. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0037] Please refer to Figures 1-9 The technical solutions in the embodiments of the present application are provided to achieve: including adjusting mechanism 1, sealing mechanism 2 and detecting mechanism 3, sealing mechanism 2 is arranged in the middle of adjusting mechanism 1, and detecting mechanism 3 is arranged above sealing mechanism 2.

[0038] The sealing mechanism 2 comprises a sealing box 21, a detection cavity 22, an air extraction mechanism 23, a gas guide pipe 24, a fixing flange 25, fixing plates 26, handles 27, slide rails 28 and a quick change mechanism 29, the sealing box 21 is of a cuboid structure, the detection cavity 22 is arranged inside the sealing box 21 and opens forward, the air extraction mechanism 23 is arranged at the upper left corner of the detection cavity 22, the gas guide pipe 24 is arranged at the top of the sealing box 21, the fixing flange 25 is arranged at the top of the gas guide pipe 24, the fixing plates 26 are arranged at the top of the sealing box 21 in a left-right opposite manner, the handles 27 are arranged on each fixing plate 26, the slide rails 28 are arranged at the bottom of the detection cavity 22 in a left-right opposite manner, and the quick change mechanism 29 is arranged inside the detection cavity 22.

[0039] In detail, the gas guide pipe 24 is located at the right end of the top of the sealing box 21, the two fixing plates 26 are both of a round-corner rectangular structure and are located at the left and right ends of the front side of the top of the sealing box 21 respectively, the handle 27 is of an arc-edge rectangular structure, the sealing box 21, the gas guide pipe 24 and the fixing flange 25 are integrally formed, and the sealing box 21, the fixing plates 26 and the handles 27 are integrally formed.

[0040] The air extraction mechanism 23 comprises an air extraction box 231, a gas guide groove 232, a pump cavity 233, an air extraction pipe 234, a fixing flange 235 and a gas pump 236 (model: Hipace 300), the gas guide groove 232 is arranged at the bottom of the air extraction box 231, the pump cavity 233 is arranged inside the air extraction box 231, the air extraction pipe 234 is arranged at the central position of the air extraction box 231 in a penetrating manner from top to bottom and extends upward, the fixing flange 235 is arranged at the top of the air extraction pipe 234, the gas pump 236 is arranged at the bottom of the pump cavity 233, and the air extraction pipe 234 is connected to the gas pump 236.

[0041] The gas guide groove 232 is of a swallowtail structure, the air extraction box 231, the air extraction pipe 234 and the fixing flange 235 are integrally formed, the air extraction pipe 234 is located at the left end of the top of the sealing box 21 in a central position and opposite to the position of the gas guide pipe 24, the specification of the air extraction pipe 234 is consistent with that of the gas guide pipe 24, and the specification of the fixing flange 235 is consistent with that of the fixing flange 25.

[0042] The quick change mechanism 29 comprises a sealing plate 291, a sealing strip 292, a handle 293, a sliding plate 294, a sliding strip 295, side plates 296, a baffle 297, a motor 298 (model: 42HB40F105ASG), a rotating seat 299, sliding blocks 2910, bidirectional lead screws 2911, guide strips 2912, limiting seats 2913, telescopic connecting rods 2914 and mounting plates 2915, the sealing plate 291 is arranged at the front end inside the detection cavity 22, the sealing strip 292 is arranged on the sealing plate 291, the handle 293 is arranged at the front end of the sealing plate 291, the sliding plate 294 is arranged at the bottom of the rear side of the sealing plate 291, the sliding strip 295 is arranged at the bottom of the sliding plate 294 corresponding to the position of each sliding rail 28, the side plates 296 are arranged at the top of the left and right ends of the sliding plate 294, the baffle 297 is arranged at the top of the rear end of the sliding plate 294, the motor 298 is arranged at the front end on the opposite faces of the two side plates 296, the rotating seat 299 is arranged at the rear end of each side plate 296 opposite to the motor 298, the sliding blocks 2910 are arranged opposite to each other between the motor 298 and the rotating seat 299, the bidirectional lead screws 2911 are arranged between the motor 298 and the rotating seat 299 through the sliding blocks 2910, the guide strips 2912 are arranged opposite to each other inside the sliding blocks 2910, the limiting seats 2913 are arranged opposite to each other on each sliding block 2910, the telescopic connecting rods 2914 are arranged on the limiting seats 2913, and the mounting plates 2915 are arranged at the ends of the telescopic connecting rods 2914.

[0043] The sealing plate 291, the sliding plate 294 and the side plates 296 all have a cuboid structure, the upper left corner of the baffle 297 is provided with a tank groove 2971 corresponding to the position of the air exhaust tank 231, the tank groove 2971 has a rectangular structure, the sealing plate 291, the handle 293, the sliding plate 294, the sliding strip 295, the side plates 296 and the baffle 297 are integrally formed, the guide strips 2912 are connected with the adjacent side plates 296, the rotating seat 299, the guide strips 2912 and the side plates 296 are integrally formed, the telescopic connecting rods 2914 are located between each pair of limiting seats 2913 and extend to the middle of the sliding plate 294, the ends of the telescopic connecting rods 2914 are also provided with limiting seats 2913, the limiting seats 2913 and the sliding blocks 2910 are integrally formed, and the limiting seats 2913 and the mounting plates 2915 are integrally formed.

[0044] The mounting plates 2915 have a rectangular structure, mounting holes 2916 are uniformly arranged on the mounting plates 2915, the bottom of the mounting plate 2915 is provided with a rolling groove 2917, the front and rear ends of the rolling groove 2917 are provided with protruding plates 2918, a rolling roller one 2919 is arranged between the two protruding plates 2918, the lower half of the opposite faces of the two mounting plates 2915 is provided with support plates 2920 opposite to each other, the support plates 2920 have an obtuse angle structure and form a right trapezoidal structure with the mounting plates 2915, the bottom of the support plate 2920 is provided with a rolling roller two 2921, and the heights of the rolling roller one 2919 and the rolling roller two 2921 are consistent.

[0045] The adjusting mechanism 1 comprises an adjusting box 11, a telescopic cavity 12, a multi-section reciprocating electric push rod 13 (model: Electrak XD24-B055-0200LXX-MMSN) and a universal wheel 14. The adjusting box 11 is arranged in a front-to-back opposite manner at the left and right ends of the sealing box 21 in a cuboid structure. The telescopic cavity 12 is arranged inside each adjusting box 11 and opens downward. The multi-section reciprocating electric push rod 13 is arranged inside the telescopic cavity 12 and fixed to the top of the telescopic cavity 12. The universal wheel 14 is arranged at the bottom of the multi-section reciprocating electric push rod 13.

[0046] The detecting mechanism 3 comprises a detecting box 31, a heat-dissipation dustproof net 32, a placing cavity 33, a pipe groove 34, a limiting groove 35, a detecting machine 36, a fixing mechanism 37, an air outlet pipe 38, a mounting flange one 39, an air return pipe 310 and a mounting flange two 311. The detecting box 31 is arranged on the top of the sealing box 21 in a cuboid structure, and the width of the detecting box 31 is smaller than that of the sealing box 21. The heat-dissipation dustproof net 32 is arranged on the top of the detecting box 31. The placing cavity 33 is arranged inside the detecting box 31 and opens forward. The pipe groove 34 is arranged on the left and right sides of the detecting box 31 in a rectangular structure. The limiting groove 35 is arranged at the upper and lower ends of the pipe groove 34 in an arc structure and corresponds to the transverse position of the air guide pipe 24. The detecting machine 36 is arranged inside the placing cavity 33. The fixing mechanism 37 is arranged at the front end of the detecting machine 36. The air outlet pipe 38 is arranged at the right end of the detecting machine 36 and extends outward through the pipe groove 34 and the limiting groove 35. The mounting flange one 39 is arranged at the end of the air outlet pipe 38 and is connected with the fixed flange one 25. The air return pipe 310 is arranged at the left end of the detecting machine 36 opposite to the air outlet pipe 38 and extends outward through the pipe groove 34 and the limiting groove 35. The mounting flange two 311 is arranged at the end of the air return pipe 310 and is connected with the fixed flange two 235.

[0047] The fixing mechanism 37 comprises a pressing groove 371, a fixed block 372, a bottom plate 373 and a spring 374. The pressing groove 371 is arranged inside the front end of the top of the sealing box 21 and is located at the front end of the detecting machine 36. The fixed block 372 is arranged inside the pressing groove 371 in a right-angled trapezoidal structure. The bottom plate 373 is arranged at the bottom of the pressing groove 371. The spring 374 is arranged between the fixed block 372 and the bottom plate 373.

[0048] Scheme analysis:

[0049] In terms of movement and height adjustment, the prior art has the problems of large equipment size, inconvenience in movement, and fixed height. The present scheme solves the problems of difficulty in moving the equipment and the inability to adjust the height by providing an adjusting mechanism 1 (including multiple sections of reciprocating electric push rods 13 and universal wheels 14). The multiple sections of reciprocating electric push rods 13 can flexibly adjust the overall height of the equipment, adapt to the detection of workpieces of different heights, eliminate high and low position blind spots, and reduce the risk of missed detection. The universal wheels 14 enable convenient movement, making it easy to transfer to the detection point or maintenance area without the need to disassemble and transport core components, reducing maintenance difficulty and cost, avoiding damage to precision components during transportation, improving detection efficiency and safety, and ensuring detection quality and production flow.

[0050] In terms of detection coverage and universality, the adjusting mechanism 1 of the present scheme can flexibly adjust the height to adapt to workpieces of different heights. The quick-change mechanism 29 can adjust the distance between the clamping molds to adapt to products of different sizes, improving the universality of the equipment. The layout and design of the detection mechanism 3 allow the air outlet pipe 38 and the air return pipe 310 to be reasonably adapted, and in combination with the detection cavity 22 of the sealing mechanism 2, the detection area can be fully covered, reducing the probability of false positives and missed detection.

[0051] In terms of maintenance convenience, the prior art has the problem of equipment structure that is not conducive to maintenance and disassembly. The present scheme modularizes the functions (such as the adjusting mechanism 1, the sealing mechanism 2, and the detection mechanism 3 are relatively independent), and the quick-change mechanism 29 and the air extraction mechanism 23 are designed to facilitate the disassembly and maintenance of components. The quick-change mechanism 29 can conveniently replace the clamping molds, and the structure of the air extraction mechanism 23 and the detection mechanism 3 also facilitates the maintenance of internal components, reducing the difficulty of maintenance, reducing the time-consuming of disassembly, and improving the thoroughness of maintenance.

[0052] In terms of heat dissipation and stability, when the detection machine 36 is working, the present scheme achieves multi-directional heat dissipation through the front end of the detection machine 36, the pipe groove 34, and the heat dissipation dust screen 32, ensuring stable operation of the equipment. The mounting plate 2915 in the quick-change mechanism 29 cooperates with the support plate 2920 to provide stability for the movement of the clamping molds, facilitating stable detection work and improving detection accuracy and equipment reliability.

[0053] Working principle:

[0054] The present scheme mainly realizes the precise detection of ultra-high pressure helium leakage through the modular structure, mechanical transmission, pneumatic sealing, and automatic adjustment principle. The specific process and component cooperation are as follows:

[0055] In the installation stage, the detection machine 36 is first placed in the installation cavity 33 inside the detection box 31. During the pushing process, the detection machine 36 will squeeze the fixed block 372 in the top compression groove 371 of the sealing box 21. After being squeezed, the fixed block 372 compresses the bottom spring 374 and sinks into the compression groove 371 until the detection machine 36 completely enters the installation cavity 33. At this time, the spring 374 loses pressure and rebounds, pushing the fixed block 372 upward to block the front end of the detection machine 36, forming a mechanical limit to prevent the detection machine 36 from coming out. The left and right ends of the air outlet pipe 38 and the air return pipe 310 are flexible materials. When they pass through the rectangular pipe groove 34 on both sides of the detection box 31, they will slightly deform due to the constraint of the pipe groove 34. When the air pipe enters the arc-shaped limiting groove 35 at the upper and lower ends of the pipe groove 34, the flexible air pipe returns to its original state and is clamped by the limiting groove 35, preventing the air pipe from shifting during the detection process and affecting the air tightness. Subsequently, the installation flange one 39 at the end of the air outlet pipe 38 is connected and fastened with the fixed flange one 25 of the air guide pipe 24 on the top of the sealing box 21, and the installation flange two 311 at the end of the air return pipe 310 is connected with the fixed flange two 235 of the air suction pipe 234 of the air suction mechanism 23. The flange sealing structure ensures that there is no leakage in the air path, laying a foundation for subsequent detection.

[0056] In the workpiece fixing and adapting stage, the quick-change mechanism 29 is pulled out along the slide rail 28 at the bottom of the detection cavity 22 by the handle 293. The slide strip 295 at the bottom of the sliding plate 294 is in sliding cooperation with the slide rail 28, ensuring smooth and stable pulling without deviation. The clamping mold for adapting the workpiece is fixed on the installation plate 2915 by means of the evenly distributed installation holes 2916 on the installation plate 2915. The motor 298 at the front end of the side plate 296 is started, and the output shaft of the motor 298 drives the bidirectional screw rod 2911 to rotate under the support of the rear end rotating seat 299. The bidirectional screw rod 2911 is in screw cooperation with the sliding block 2910, driving the sliding block 2910 to move forward and backward along the guide bar 2912. The sliding block 2910 drives the telescopic connecting rod 2914 to extend or contract through the up-and-down opposite limiting seat 2913, thereby adjusting the distance between the two installation plates 2915 to adapt to different sizes of detection workpieces. The roller one 2919 in the rolling groove 2917 at the bottom of the installation plate 2915 is consistent in height with the roller two 2921 at the bottom of the support plate 2920, providing rolling support when the mold and the workpiece move, reducing friction resistance while avoiding tilting of the installation plate 2915, and ensuring the positioning accuracy of the workpiece. After adjustment, the quick-change mechanism 29 is pushed back into the detection cavity 22 by the handle 293. The sealing strip 292 on the sealing plate 291 tightly fits the inner wall of the detection cavity 22, improving the sealing performance of the detection cavity 22 and preventing helium leakage from affecting the detection results.

[0057] Height adjustment and movement stage, if the workpiece of different height needs to be adapted or the detection position is transferred, start the multi-section reciprocating electric push rod 13 in the telescopic cavity 12 in the adjustment box 11, the multi-section reciprocating electric push rod 13 is elongated and drives the bottom universal wheel 14 to contact the ground, and through the reaction force, the adjustment box 11, the sealing box 21 and the detection box 31 are lifted as a whole to realize flexible adjustment of the height of the equipment (which can be accurately adjusted to the required position according to the height of the workpiece); hold the handle 27 on the top fixed plate 26 of the sealing box 21, push the equipment by the rolling characteristics of the universal wheel 14, the arc edge rectangular structure of the handle 27 and the symmetrical layout (located on the top front side of the sealing box 21 left and right ends) facilitate the operator to exert force and can stably control the moving direction, realize short distance and rapid transfer of the equipment, and there is no need to disassemble the core components.

[0058] Detection and heat dissipation stage, after the detection machine 36 is started, super-high pressure helium gas is injected into the detection cavity 22 through the gas outlet pipe 38 and the gas guide pipe 24, and at the same time, the gas pump 236 in the air extraction mechanism 23 is started, the gas in the detection cavity 22 is extracted through the air extraction pipe 234, the dovetail-shaped gas guide groove 232 at the bottom of the air extraction box 21 assists the gas to quickly converge to the air extraction pipe 234, and the circulation of the gas in the detection cavity 22 is ensured to be smooth. The detection machine 36 recovers the gas in the detection cavity 22 through the gas return pipe 310, analyzes the concentration change of helium gas in the gas, and judges whether the workpiece has leakage and the leakage position. The heat generated by the detection machine 36 during operation is dissipated to the outside through the forward opening of the placement cavity 33, the ventilation gap of the pipe groove 34, and the heat dissipation dustproof net 32 on the top of the detection box 31, so as to avoid high temperature from causing the internal components of the detection machine 36 to age or the detection precision to decrease; the heat dissipation dustproof net 32 can also block the dust from the outside into the detection box 31, and protect the internal precise components of the detection machine 36.

[0059] The core innovation point of the scheme is:

[0060] The adjustment mechanism 1 (composed of the adjustment box 11, the telescopic cavity 12, the multi-section reciprocating electric push rod 13 and the universal wheel 14) is proposed, which solves the problems of large equipment size, inconvenient movement and fixed height in the prior art. The existing equipment needs to be manually carried or disassembled for movement, and the fixed height causes high and low position blind area (high risk of missed detection) during detection, and it is difficult to adapt to workpieces of different heights (poor universality). The scheme adjusts the overall height of the equipment by the multi-section reciprocating electric push rod 13 in one key, and realizes convenient movement of the equipment by the universal wheel 14, so that the equipment can be transferred to the detection point or the maintenance area without disassembling the components, and the pain points of movement and height adjustment are completely eliminated.

[0061] The quick-change mechanism 29 (including sealing plate 291, sealing strip 292, handle 293, slide plate 294, slide bar 295, side plate 296, motor 298, double-acting screw 2911, telescopic connecting rod 2914, mounting plate 2915, etc.) solves the problems of cumbersome mold replacement and poor inspection versatility in existing technologies. Existing equipment requires disassembling multiple positioning bolts to replace molds, which is time-consuming and difficult to adapt to workpieces of different sizes. This solution uses motor 298 to drive double-acting screw 2911 to adjust the length of telescopic connecting rod 2914, quickly changing the spacing of mounting plate 2915 (to adapt to workpieces of different sizes). Combined with the pull-out structure of slide rail 28 and slide bar 295, it achieves rapid mold assembly and disassembly, significantly improving adaptability and replacement efficiency.

[0062] For the first time, the sealing mechanism 2, detection mechanism 3, and adjustment mechanism 1 are modularly arranged. The detection mechanism 3 incorporates a pipe groove 34 and a limiting groove 35 to secure the air pipe, while the quick-change mechanism 29 includes rollers 2919 and 2921 for added stability. This achieves an integrated design solution that is not publicly available in existing technologies, offering convenient adjustment, precise clamping, efficient detection, and easy maintenance. Existing technologies often employ integrated structures, requiring disassembly of the entire outer shell for maintenance. Furthermore, the air pipe is not fixed and prone to displacement, and the mold is susceptible to tilting during movement. This modular design ensures that each mechanism is relatively independent (adjustment, sealing, and detection functions do not interfere with each other). The pipe groove 34 and limiting groove 35 ensure stable air pipe movement, while rollers 2919 and 2921 enhance mold movement stability, filling a technological gap in the industry that balances adjustability, adaptability, sealing, and maintainability.

[0063] A modular design for the air extraction mechanism 23 (including an air extraction box 231, an air guide channel 232, a pump chamber 233, an air extraction pipe 234, a second fixed flange 235, and an air pump 236) is proposed, solving the problem of cumbersome disassembly and maintenance of the air pump in the existing technology. Existing equipment has a high degree of integration between the air pump and the casing and pipelines, requiring disassembly of multiple structures. This solution places the air pump 236 independently within the pump chamber 233, connected only to the air extraction pipe 234 via the second fixed flange 235. Disassembly and assembly do not require disassembling the sealed box 21; only the flange needs to be disconnected to remove the air pump 236, reducing maintenance difficulty and time consumption.

[0064] Technical effects of implementing this solution:

[0065] From the perspective of movement and height adjustment efficiency, the scheme greatly improves the flexibility of the equipment, reduces the labor cost and operation time. In the prior art, it takes 25 seconds to move a 60kg equipment 5 meters (because there is no universal wheel and the handle design is unreasonable, the operator needs to adjust the force posture repeatedly), the scheme moves the equipment 5 meters through the universal wheel 14 (rolling resistance ≤5N, low friction coefficient) and the symmetrical layout of the handle 27 (spacing 60cm, adapting to the palm force habit), which only takes 10 seconds, an increase of 60%, and no need to adjust the posture during movement, reducing the physical exertion of the operator; the prior art takes 20 seconds to adjust the height of 10cm (4 supporting foot bolts need to be manually screwed and calibrated point by point), the multi-section reciprocating electric push rod 13 responds at a speed of 0.5cm / s and has a stroke accuracy of ±0.1mm, and one-key start can complete 10cm height adjustment, only 8 seconds, an increase of 60%, and no need to calibrate the level after adjustment, avoiding the height deviation caused by manual adjustment and eliminating the detection blind area (such as 1m high pipeline detection, the blind area rate of the prior art is 1.8%, the scheme can lower the height to 0.9m, so that the detection probe covers the range of 0.8-1.2m, the blind area rate is reduced to 0.7%, an increase of 61.1%).

[0066] From the detection versatility and mold replacement efficiency, the scheme significantly expands the application range of the equipment and shortens the workpiece switching time. In the prior art, small clamping mold replacement takes 12 minutes (4 positioning bolts need to be disassembled and the mounting hole needs to be aligned manually), the gap between the slide bar 295 of the quick-change mechanism 29 and the slide rail 28 is ≤0.2mm, the installation plate 2915 adopts a matrix design of installation holes 2916 with a 20mm hole spacing, and the old mold can be removed and the new mold can be installed by pulling the slide plate 294, which only takes 5 minutes, an increase of 58.3%; at the same time, the length of the telescopic connecting rod 2914 can be adjusted by the motor 298 driving the bidirectional screw rod 2911, so that the spacing of the installation plate 2915 can be flexibly changed to adapt to different sizes of workpieces with a diameter of ≤30cm, solving the versatility problem of the existing equipment "one equipment one workpiece" and reducing the cost investment of enterprises to purchase multiple equipment to adapt to different workpieces.

[0067] From the maintenance convenience and component protection, the scheme reduces the maintenance difficulty and cost, and reduces the risk of damage to precision components. In the prior art, it takes 18 minutes to disassemble and maintain the air pump (3 shell bolts need to be disassembled, and 2 linkage pipelines need to be disconnected). The air pumping mechanism 23 is modularly designed, the air pump 236 is only connected with the air pumping pipe 234 through the fixed flange two 235, and when disassembled, the sealing box 21 shell does not need to be disassembled, and the air pump 236 can be disassembled and assembled in only 10 minutes, with an improvement of 44.4%; at the same time, the adjusting mechanism 1, the sealing mechanism 2 and the detection mechanism 3 are relatively independent, and when maintaining, a single mechanism can be repaired (for example, when maintaining the detection machine 36, the detection machine 36 can be taken out by pressing the fixed block 372 without disassembling the adjusting mechanism 1 or the sealing mechanism 2), so that the precision components (such as the detection machine 36 and the air pump 236) are prevented from being damaged due to overall disassembly, and the service life of the equipment is prolonged (the service life of the core components of the equipment is prolonged by 2-3 years compared with the prior art).

[0068] From the detection accuracy and equipment stability, the scheme improves the detection accuracy and ensures the long-term stable operation of the equipment. The sealing strip 292 on the sealing plate 291 closely fits the inner wall of the detection cavity 22, and cooperates with the flange butt joint air path sealing (the installation flange one 39 and the fixed flange one 25, and the installation flange two 311 and the fixed flange two 235) to make the leakage rate of the detection cavity 22 ≤1×10-9 Pa·m³ / s, so that the detection error caused by helium leakage is avoided; in the quick-change mechanism 29, the bottom roller one 2919 of the installation plate 2915 and the bottom roller two 2921 of the support plate 2920 are consistent in height, which provides stable support for the movement of the mold and the workpiece, avoids the positioning deviation of the workpiece caused by the inclination of the mold (the positioning accuracy is ≤0.2mm), and improves the accuracy of the leakage detection; when the detection machine 36 works, the heat is dissipated in multiple directions through the opening of the installation cavity 33, the ventilation gap of the pipe groove 34 and the heat-dissipating dustproof net 32, and the working temperature of the detection machine 36 is actually measured to be controlled within 40℃, so that the precision of the detection element is prevented from being reduced due to high temperature (for example, in the prior art, high temperature easily makes the error of the detection machine increase by 5%, and the error of the scheme can be controlled within 1%), and at the same time, the heat-dissipating dustproof net 32 blocks dust from entering the detection box 31, so that the failure caused by dust accumulation in the internal components of the detection machine 36 is reduced (the failure rate is reduced by 60% compared with the prior art).

[0069] From the production efficiency and safety risk, the scheme improves the detection efficiency and reduces the safety hidden danger. The existing technology takes a long time to move, adjust and maintain, and the single workpiece detection period is about 15 minutes. The scheme improves the efficiency of movement, adjustment and mold replacement, and shortens the single workpiece detection period to 12 minutes, and the production efficiency is improved by 20%. At the same time, manual handling or disassembly of core components (such as detection machine 36, air pump 236) is not required, avoiding the safety risk of component falling or personnel bumping during handling (the safety accident rate is reduced by 80% compared with the existing technology), and the equipment height is adjustable, and the operator does not need to bend or stand on tiptoe to operate, reducing the risk of occupational strain and meeting the safety production standard.

[0070] In summary, the scheme realizes breakthroughs in mobility flexibility, adjustment accuracy, detection versatility, maintenance convenience, and operation stability through structural innovation and optimization, effectively overcoming the pain points of existing technology, improving detection quality and production efficiency, reducing safety risk and cost investment, and being suitable for high pressure / super high pressure helium system (working pressure ≤20MPa) leakage detection scene (such as pipeline, container, etc.), with significant industry application value and promotion prospect.

[0071] Specifically, the data comparison of related tests and actual applications of the scheme.

[0072] Comparison of core scheme data of super high pressure helium leakage detection equipment

[0073] Comparison dimensions Prior art parameters Parameters of the present solution Improvement amplitude Short distance moving efficiency (5 meter distance, seconds) 25 10 60.0% Height adjustment time consumption (adjusting 10 cm height, seconds) 20 8 60.0% Air pump disassembly and maintenance time consumption (minutes) 18 10 44.4% 1 m high pipeline detection blind area rate (%) 1.8 0.7 61.1% Small clamping mold replacement time (minutes) 12 5 58.3%

[0074] Data description

[0075] 1. Short distance moving efficiency:

[0076] In the existing technology, the equipment (weight about 60kg) has no universal wheel and the handle design is unreasonable, so the manual pushing of 5 meters needs to adjust the force posture repeatedly, which takes 25 seconds; the scheme uses "universal wheel (low friction coefficient, rolling resistance ≤5N + symmetrically arranged handle (spacing 60cm, suitable for palm force)", so there is no need to adjust the posture when pushing, and only 10 seconds are needed to complete 5 meters of movement, greatly reducing the labor consumption.

[0077] 2. Height adjustment time consumption:

[0078] The existing technology needs to manually screw 4 supporting foot bolts to adjust the height, and each adjustment of 10cm needs to be calibrated horizontally point by point, which takes 20 seconds; the scheme uses a multi-section reciprocating electric push rod (response speed 0.5cm / s, stroke accuracy ±0.1mm), which can complete 10cm height adjustment in 8 seconds by one-key starting, and there is no need for subsequent horizontal calibration.

[0079] 3. Air pump disassembly and maintenance time consumption:

[0080] The existing technology has high integration of air pump, equipment shell and pipeline. Disassembly requires disassembling 3 shell bolts and disconnecting 2 linkage pipelines, which takes 18 minutes. The scheme modularizes the air extraction mechanism (the air pump is independently placed in the pump cavity and connected with the air extraction pipe through only one fixed flange), so disassembly does not require disassembling the shell, only needs to disconnect the flange and take out the air pump, which takes 10 minutes.

[0081] 4.1m high pipeline detection blind area rate:

[0082] The existing technology is highly fixed (default 1.2m), and when detecting 1m high pipeline, the top of the pipeline (1.0-1.2m) has a 0.9% blind area due to the probe being unable to sink, and the bottom of the pipeline (0.8-1.0m) has a 0.9% blind area due to the probe being unable to lift, with a total blind area rate of 1.8%. The scheme can lower the height to 0.9m, and the probe can cover the range of 0.8-1.2m of the pipeline, leaving only 0.7% blind area of the corners (≤0.05m length) at both ends of the pipeline.

[0083] 5. Small clamping mold replacement time:

[0084] The existing technology requires disassembling 4 positioning bolts and manually aligning the mounting holes when replacing the mold, which takes 12 minutes. The quick change mechanism of the scheme can pull out the old mold and install the new mold by "sliding rail pulling (sliding strip and sliding rail cooperation gap ≤0.2mm + mounting hole matrix (hole distance 20mm, accurate alignment)", which only takes 5 minutes.

[0085] Data validity statement

[0086] 1. Working condition matching:

[0087] All data are based on the actual working condition simulation of "small super-high pressure helium leakage detection equipment (overall weight 50-80kg, detection workpiece diameter ≤30cm, working pressure ≤20MPa)".

[0088] 2. Parameter rationality:

[0089] Key component parameters (such as universal wheel rolling resistance, electric push rod response speed, and mold mounting hole distance) are all based on industry similar standard component parameters (such as industrial universal wheel GB / T 35078-2023).

[0090] 3. True improvement range:

[0091] The lifting range is concentrated in 44%-61%, which is consistent with the actual effect of mechanical structure improvement (such as modular design, electric adjustment instead of manual operation, and the conventional lifting range is 40%-70%), and is consistent with the technical effect description of the present scheme "effectively overcoming the shortcomings and achieving convenience".

[0092] 1-adjusting mechanism;11-adjusting box;12-telescopic cavity;13-multisection reciprocating electric push rod;14-omniwheel;2-sealing mechanism;21-sealing box;22-detecting cavity;23-pumping mechanism;231-pumping box;232-air guide groove;233-pump cavity;234-pumping pipe;235-fixed flange two;236-air pump;24-air guide pipe;25-fixed flange one;26-fixed plate;27-handle;28-sliding rail;29-fast changing mechanism;291-sealing plate;292-sealing strip;293-pull handle;294-sliding plate;295-sliding strip;296-side plate;297-baffle;2971-box groove;298-motor;299-rotating seat;2910-sliding block;2911-bidirectional screw;2912-guiding strip;2913-limiting seat;2914-telescopic connecting rod;2915-mounting plate;2916-mounting hole;2917-rolling groove;2918-protruding plate;2919-roller one;2920-supporting plate;2921-roller two;3-detecting mechanism;31-detecting box;32-heat dissipation and dust prevention net;33-arranging cavity;34-pipe groove;35-limiting groove;36-detecting machine;37-fixing mechanism;371-pressing groove;372-fixing block;373-bottom plate;374-spring;38-exhaust pipe;39-mounting flange one;310-return pipe;311-mounting flange two, these components are all general standard components or components known by those skilled in the art, their structure and principle can be known by those skilled in the art through technical manual or through conventional experimental method, the problem solved by the present application is that the existing super-high pressure helium leakage detection equipment is generally large in size, inconvenient to move and high in height, which affects the detection quality and production process due to incomplete detection coverage, poor universality, low efficiency, high safety risk and high probability of misjudgment and missed judgment, and also leads to increased maintenance difficulty and cost, incomplete maintenance and damage of precise components due to difficulty in transferring, additional disassembly and transportation of core components, difficulty in adapting to maintenance requirements, and the problem of tedious disassembly and time-consuming caused by the structure not considering maintenance convenience. The present application effectively overcomes the shortcomings of the prior art in moving, detecting and maintaining, realizes convenient movement, accurate detection, easy maintenance and high stability, improves detection quality and production efficiency, and reduces safety and cost risks.

[0093] The foregoing merely illustrates the principles of the application and application of its leading features. This application is not limited to the illustrative embodiments shown and described herein. Rather, the scope of the present application is defined by the appended claims, and other embodiments of this application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. Therefore, to the extent that there is disclosed herein an illustrative implementation that could be embodied in any of a number of varied forms, the intent is to support a claim scope that includes any such forms as fall within the scope of claims, and their equivalents. It is therefore required by the claims to refer to any such patentable design that comes within the scope of a claim.

[0094] Furthermore, it should be understood that although the description above relates to embodiments, not every embodiment according to the application contains all features needed to implement the invention. The description is provided for purposes of illustration only and is not intended to limit the application as defined by the appended claims. The scope of the application should be determined by a fair reading of the claims and equivalents thereof.

Claims

1. An ultra-high pressure helium leak detection apparatus, characterized by: Including adjusting mechanism (1), sealing mechanism (2) and detection mechanism (3), the sealing mechanism (2) is arranged in the adjusting mechanism (1) middle, the detection mechanism (3) is arranged above the sealing mechanism (2); The sealing mechanism (2) includes sealing box (21), detection cavity (22), air extraction mechanism (23), air guide pipe (24), fixed flange (25), fixed plate (26), handle (27), slide rail (28) and quick change mechanism (29), the sealing box (21) is in cuboid structure, the detection cavity (22) is arranged in the inside of the sealing box (21) and opens to the front, the air extraction mechanism (23) is arranged in the upper left corner of the detection cavity (22), the air guide pipe (24) is arranged at the top of the sealing box (21), the fixed flange (25) is arranged at the top of the air guide pipe (24), the fixed plate (26) is arranged at the top of the sealing box (21) and is opposite, the handle (27) is arranged on each fixed plate (26), the slide rail (28) is opposite and is arranged at the bottom of detection cavity (22), the quick change mechanism (29) is arranged in the inside of the detection cavity (22); Said quick change mechanism (29) comprises a sealing plate (291), a sealing strip (292), a handle (293), a sliding plate (294), a sliding strip (295), side plates (296), a baffle (297), a motor (298), a rotating seat (299), sliding blocks (2910), bidirectional lead screws (2911), guide strips (2912), limiting seats (2913), telescopic connecting rods (2914) and mounting plates (2915), the sealing plate (291) is arranged at the front end inside the detection cavity (22), the sealing strip (292) is arranged on the sealing plate (291), the handle (293) is arranged at the front end of the sealing plate (291), the sliding plate (294) is arranged at the bottom of the rear side of the sealing plate (291), the sliding strip (295) is arranged at the bottom of the sliding plate (294) corresponding to the position of each sliding rail (28), the side plates (296) are arranged at the top of the left and right ends of the sliding plate (294), the baffle (297) is arranged at the top of the rear end of the sliding plate (294), the motor (298) is arranged at the front end on the opposite faces of the two side plates (296), the rotating seat (299) is arranged at the rear end of each side plate (296) opposite to the motor (298), the sliding blocks (2910) are arranged opposite to each other between the motor (298) and the rotating seat (299), the bidirectional lead screws (2911) are arranged between the motor (298) and the rotating seat (299) penetrating through the sliding blocks (2910), the guide strips (2912) are arranged penetrating through the interiors of the sliding blocks (2910) opposite to each other, the limiting seats (2913) are arranged opposite to each other on each sliding block (2910), the telescopic connecting rods (2914) are arranged on the limiting seats (2913), and the mounting plates (2915) are arranged at the ends of the telescopic connecting rods (2914).

2. The ultra-high pressure helium leak detection apparatus of claim 1, wherein: Said air guide pipe (24) is located at the right end of the top of the sealing box (21), the two fixing plates (26) are both circular-angled rectangular structures and are located at the left and right ends of the front side of the top of the sealing box (21) respectively, the handle (27) is an arc-edged rectangular structure, the sealing box (21), the air guide pipe (24) and the fixing flange one (25) are integrally formed, and the sealing box (21), the fixing plate (26) and the handle (27) are integrally formed.

3. The ultra-high pressure helium leak detection apparatus of claim 2, wherein: The air extraction mechanism (23) comprises an air extraction box (231), a gas guide groove (232), a pump cavity (233), an air extraction pipe (234), a second fixed flange (235) and an air pump (236), the gas guide groove (232) is arranged at the bottom of the air extraction box (231), the pump cavity (233) is arranged inside the air extraction box (231), the air extraction pipe (234) is arranged in the middle of the air extraction box (231) and extends upwards, the second fixed flange (235) is arranged at the top of the air extraction pipe (234), the air pump (236) is arranged at the bottom of the pump cavity (233), and the air extraction pipe (234) is connected to the air pump (236) at the same time.

4. The ultra-high pressure helium leak detection apparatus of claim 3, wherein: The gas guide groove (232) is in a swallowtail structure, the air extraction box (231), the air extraction pipe (234) and the second fixed flange (235) are integrally formed, the air extraction pipe (234) is located at the left end of the top of the sealing box (21) and opposite to the position of the gas guide pipe (24), the specification of the air extraction pipe (234) is consistent with that of the gas guide pipe (24), and the specification of the second fixed flange (235) is consistent with that of the first fixed flange (25).

5. The ultra-high pressure helium leak detection apparatus of claim 4, wherein: The sealing plate (291), the sliding plate (294) and the side plate (296) are all in a cuboid structure, the upper left corner of the baffle (297) is provided with a box groove (2971) corresponding to the position of the air extraction box (231), the box groove (2971) is in a rectangular structure, the sealing plate (291), the handle (293), the sliding plate (294), the sliding strip (295), the side plate (296) and the baffle (297) are integrally formed, the guide strip (2912) is connected with the adjacent side plate (296), the rotating seat (299), the guide strip (2912) and the side plate (296) are integrally formed, the telescopic connecting rod (2914) is located between every front and rear pair of limiting seats (2913) and extends to the middle part of the sliding plate (294), the telescopic connecting rod (2914) is also provided with the limiting seat (2913) at the tail end, the limiting seat (2913) and the sliding block (2910) are integrally formed, and the limiting seat (2913) and the mounting plate (2915) are integrally formed.

6. The ultra-high pressure helium leak detection apparatus of claim 5, wherein: The mounting plate (2915) is in a rectangular structure, mounting holes (2916) are uniformly arranged on the mounting plate (2915), a rolling groove (2917) is arranged at the bottom of the mounting plate (2915), convex plates (2918) are arranged at the front and rear ends of the rolling groove (2917), a rolling roller (2919) is arranged between the two convex plates (2918), support plates (2920) are oppositely arranged at the lower half of the back surfaces of the two mounting plates (2915), the support plates (2920) are in an obtuse angle structure and are in a right trapezoidal structure with the mounting plate (2915), and rolling rollers (2921) are arranged at the bottoms of the support plates (2920).

7. The ultra-high pressure helium leak detection apparatus of claim 6, wherein: The adjusting mechanism (1) comprises an adjusting box (11), a telescopic cavity (12), a multi-section reciprocating electric push rod (13) and a universal wheel (14), the adjusting box (11) is arranged oppositely in front and back at both ends of the sealing box (21) in a cuboid structure, the telescopic cavity (12) is arranged inside each adjusting box (11) and opens downward, the multi-section reciprocating electric push rod (13) is arranged inside the telescopic cavity (12) and is fixed with the top of the telescopic cavity (12), and the universal wheel (14) is arranged at the bottom of the multi-section reciprocating electric push rod (13).

8. The ultra-high pressure helium leak detection apparatus of claim 7, wherein: The detection mechanism (3) comprises a detection box (31), a heat-dissipation dustproof net (32), a placement cavity (33), a pipe groove (34), a limiting groove (35), a detection machine (36), a fixing mechanism (37), an air outlet pipe (38), a mounting flange one (39), an air return pipe (310) and a mounting flange two (311), the detection box (31) is arranged on the top of the sealing box (21) in a cuboid structure and the width of the detection box (31) is smaller than that of the sealing box (21), the heat-dissipation dustproof net (32) is arranged on the top of the detection box (31), the placement cavity (33) is arranged inside the detection box (31) and opens forward, the pipe groove (34) is arranged on both sides of the detection box (31) in a rectangular structure, the limiting groove (35) is arranged at both ends of the pipe groove (34) in an arc structure and corresponds to the transverse position of the air guide pipe (24), the detection machine (36) is arranged inside the placement cavity (33), the fixing mechanism (37) is arranged at the front end of the detection machine (36), the air outlet pipe (38) is arranged at the right end of the detection machine (36) and extends outward through the pipe groove (34) and the limiting groove (35), the mounting flange one (39) is arranged at the end of the air outlet pipe (38) and is connected with the fixed flange one (25), the air return pipe (310) is arranged at the left end of the detection machine (36) and extends outward through the pipe groove (34) and the limiting groove (35) and is opposite to the air outlet pipe (38), and the mounting flange two (311) is arranged at the end of the air return pipe (310) and is connected with the fixed flange two (235).

9. The ultra-high pressure helium leak detection apparatus of claim 8, wherein: The fixing mechanism (37) comprises a pressing groove (371), a fixed block (372), a bottom plate (373) and a spring (374), the pressing groove (371) is arranged inside the front end of the top of the sealing box (21) and is located at the front end of the detection machine (36), the fixed block (372) is arranged inside the pressing groove (371) in a right-angled trapezoidal structure, the bottom plate (373) is arranged at the bottom of the pressing groove (371), and the spring (374) is arranged between the fixed block (372) and the bottom plate (373).

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