Device and method for automatically detecting gas tightness of gas pressure regulating valve

Abstract

The invention belongs to the technical field of regulating valve detection, and particularly relates to a gas pressure regulating valve airtightness automatic detection device and detection method.The gas pressure regulating valve airtightness automatic detection device comprises a cabinet, a first sliding assembly is arranged on the front side of the upper end face of the cabinet, and two detection mechanisms distributed left and right are arranged on the first sliding assembly; the area, located below the inflation mechanism, of the upper side of the cabinet is an inflation area. According to the invention, two groups of detection mechanisms are adopted to alternately carry out feeding, discharging and inflation operation under the control of the sliding assembly I, continuous detection of batch gas regulating valves is realized, and compared with a traditional single-group intermittent operation mode, the whole detection time is greatly shortened, so that the detection efficiency of the batch gas regulating valves is improved; through cooperation of the pressure compensation assembly and the pressure detector, after inflation of the gas adjusting valve is stopped, the communication volume between the interior of the compensation pipe and the gas supply base is increased, and therefore the internal pressure of the gas adjusting valve is adjusted.

Description

Technical Field

[0001] The present invention belongs to the technical field of regulating valve detection, and particularly relates to an automatic airtightness detection device and detection method for a gas pressure regulating valve. Background Art

[0002] A gas pressure regulating valve is a device used to regulate the gas pressure. Its main function is to reduce high-pressure gas to a low pressure suitable for use and maintain the output pressure stable. Airtightness detection is a necessary step before the gas pressure regulating valve leaves the factory to ensure its use safety and reliability. Common detection methods include air pressure testing, bubble testing, helium leak detection, etc.

[0003] When the existing air pressure detection device conducts airtightness detection on a gas regulating valve, it is necessary to fix and seal the gas regulating valve and then inflate it. After inflation, wait for a period of time and use the corresponding detection component to detect whether the pressure drops to a preset value during this period.

[0004] However, the detection device has the following defects: 1. In order to improve the detection efficiency, usually multiple gas regulating valves are fixed on the detection table at the same time for synchronous air pressure testing. After inflation, the gas regulating valves need to wait for a period of time to detect whether the airtightness of the gas regulating valves is qualified through the detection component. After the detection is completed, all the gas regulating valves are removed. The detection time consumed by the same group of gas regulating valves is relatively long, and the overall efficiency of batch detection needs to be improved; 2. After the input port and output port of the gas regulating valve are sealed, its interior is inflated. When the pressure detection component detects that the internal pressure of the gas regulating valve reaches the predetermined value, the gas supply device automatically stops supplying gas. However, due to the large gas flow rate of the gas supply device, even if the gas supply device immediately stops supplying gas when receiving the closing signal, there may still be a situation where after the gas regulating valve completely stops supplying gas, the actual pressure inside it is slightly larger than the preset pressure, thus affecting the final test result, and the test accuracy needs to be improved. Summary of the Invention

[0005] In view of the above problems, an automatic airtightness detection device and detection method for a gas pressure regulating valve provided by an embodiment of the present invention, compared with the traditional intermittent detection operation of loading and unloading in steps, are equipped with two sets of detection mechanisms and implement staggered loading and unloading and inflation actions, shortening the test waiting time, improving the efficiency of batch testing of gas regulating valves, and at the same time adjusting the air pressure of the gas regulating valve after the gas supply device stops supplying gas.

[0006] To achieve the above object, the embodiments of the present invention provide the following technical solutions: The present invention provides an automatic airtightness detection device for a gas pressure regulating valve, including a cabinet. A main controller is fixedly arranged at the rear side of the upper end surface of the cabinet. The left and right side areas of the cabinet are both set as loading and unloading areas. A sliding component I is arranged at the front side of the upper end surface of the cabinet. Two sets of detection mechanisms distributed left and right are arranged on the sliding component I. An inflation mechanism is arranged above the cabinet. The area above the cabinet and below the inflation mechanism is set as an inflation area. The detection mechanism includes a positioning seat connected to the sliding component I on both the front and rear sides. A positioning channel is opened in the positioning seat. A plurality of sets of seal positioning components are arranged in the positioning channel. A pressure detector is arranged on the seal positioning components. And a pressure compensation component and an auxiliary support component are also connected to the seal positioning components. A sliding component II is jointly arranged between the plurality of sets of seal positioning components and the positioning seat. The seal positioning component includes a gas supply seat. The compensation component includes a compensation pipe communicated with the inside of the gas supply seat. A piston and a control member for controlling the movement of the piston are slidably arranged in the compensation pipe.

[0007] According to an advantageous embodiment, the sliding component I includes slide rails fixedly arranged on the upper side of the cabinet and distributed front and rear. The left and right sides of the slide rails respectively extend along the length direction of the cabinet and exceed the left and right edges of the upper side of the cabinet. A screw rod I is rotatably arranged on the slide rails through an ear seat I. Two connecting blocks I are threadedly arranged on the screw rod I. The front and rear sides of the positioning seat are respectively fixedly connected to the corresponding connecting blocks I. Any same end of the two screw rods I is jointly driven and connected through a sprocket set I. A motor I is fixedly arranged on any one of the ear seats I. The output shaft of the motor I is fixedly connected to the corresponding end of the screw rod I.

[0008] According to an advantageous embodiment, the positioning channel includes a movable cavity opened in the positioning seat and extending along its length direction. A plurality of circular first through holes uniformly distributed along its length direction are opened on the upper side of the movable cavity. A rectangular second through hole extending along its length direction is opened on the lower side of the movable cavity. And a plurality of circular third through holes uniformly distributed along its length direction are also opened on the lower side of the movable cavity. The first through holes and the third through holes have the same diameter and the corresponding first through holes and second through holes on the upper and lower sides are offset left and right. The seal positioning components correspond to the first through holes one by one.

[0009] According to an advantageous embodiment, the seal positioning component further includes a seal table and a seal pipe. The corresponding seal table and seal pipe are respectively arranged on the front and rear sides of the corresponding first through hole. The seal table is fixedly arranged in the second through hole. The end of the seal pipe away from the seal table is fixedly connected to a gas supply seat slidably connected to the second through hole. The gas supply seat is connected to the sliding component II. The inside of the gas supply seat is a hollow structure and is communicated with the corresponding seal pipe. A gas injection pipe with a one-way valve is arranged on the upper side of the gas supply seat. The lower port of the gas injection pipe is communicated with the inside of the gas supply seat.

[0010] According to an advantageous embodiment, a sealing plate is fixedly sleeved on one side of the sealing tube close to the corresponding sealing platform. Sealing gaskets are laid on the side walls of the sealing platform and the sealing plate close to each other. The pressure detector is fixedly arranged inside the sealing tube and is located between the corresponding sealing platform and the air supply seat.

[0011] According to an advantageous embodiment, the pressure compensation assembly includes a compensation tube communicated with the inside of the air supply seat. The control member includes a second screw rod. One end of the compensation tube far from the air supply seat is internally fixedly provided with a second motor through a bracket. A second screw rod is fixedly connected to the output shaft of the second motor. A sleeve is threadedly connected to one end of the second screw rod far from the second motor. One end of the sleeve far from the second motor is fixedly connected to a piston. A guide rod is arranged on one side of the piston close to the second motor. The guide rod is slidably connected to the bracket.

[0012] According to an advantageous embodiment, the auxiliary support assembly includes a rotating shaft rotatably arranged in the second through hole. A support plate is fixedly connected to the rotating shaft. Gear sets are arranged at both the left and right ends of the rotating shaft. The gear set includes a first gear and a second gear meshing with each other. The first gear is fixedly connected to the rotating shaft. The second gear is rotatably arranged in the second through hole through a connecting shaft. Two symmetrically arranged triangular toothed plates are fixedly arranged on one side of the air supply seat far from the corresponding sealing tube. A plurality of teeth are fixedly arranged on the lower side of the horizontal section of the toothed plate at equal intervals along its length direction. The lower side of the horizontal section of the toothed plate meshes with the corresponding second gear through a plurality of teeth.

[0013] According to an advantageous embodiment, a plurality of sliding holes extending along the length direction are formed in both the left and right inner walls of the second through hole. The second sliding assembly includes a second connecting block slidably arranged in the sliding hole. The left and right sides of the air supply seat are respectively fixedly connected to the corresponding second connecting blocks. The left and right sides of the positioning seat are respectively rotatably arranged with a third screw rod through an ear seat two. The third screw rod is threadedly connected to all the second connecting blocks on the same side thereof. The two third screw rods are driven and connected through a second sprocket group at any same end. A third motor is fixedly arranged on any one of the ear seats two. The output shaft of the third motor is fixedly connected to one end of the corresponding third screw rod.

[0014] According to an advantageous embodiment, the inflation mechanism includes a support plate fixedly connected to the front side of the main controller. A cylinder is fixedly connected to the upper side of the support plate. The telescopic end of the cylinder is fixedly connected to an air delivery plate with a hollow structure inside. A plurality of air delivery pipes communicated with the inside thereof are fixedly arranged on the lower side of the air delivery plate. An air supply pipe communicated with the inside thereof is arranged on the air delivery plate. The air supply pipe is connected to an external air supply device.

[0015] The present invention also provides an automatic airtightness detection method for a gas pressure regulating valve, which is completed in cooperation with the above-mentioned automatic airtightness detection device for a gas regulating valve, and includes the following steps:

[0016] S1. Loading: The positioning seat on the detection mechanism moves to the loading and unloading area to load the gas regulating valve, and both ends are sealed and fixed through the sealing and positioning assembly;

[0017] S2. Inflation: The positioning seat loaded with the gas regulating valve moves towards the inflation area through the first sliding assembly. After the positioning seat moves to the inflation area, the corresponding gas regulating valve is inflated;

[0018] S3. Detection and data uploading: The first sliding assembly drives the positioning seat loaded with the inflated gas regulating valve to move towards the corresponding cabinet loading and unloading area, and during this process, it is detected by a pressure detector and the data is uploaded to the main controller for analysis and processing. At the same time, the positioning seat loaded with the non-inflated gas regulating valve moves towards the inflation area;

[0019] S4. Unloading and loading: The gas regulating valve after the test in the positioning seat is automatically discharged downward, and then loading is carried out. At the same time, the gas regulating valve on the positioning seat in the inflation area is inflated;

[0020] S5. Circular detection: Through the first sliding assembly, the inflated gas regulating valve is moved towards the corresponding loading and unloading area, and the reloaded gas regulating valve moves towards the inflation area synchronously, and such reciprocation is carried out for continuous detection operations of a batch of gas regulating valves.

[0021] Compared with the prior art, the automatic airtightness detection device and detection method for a gas pressure regulating valve provided by the embodiment of the present invention have the following beneficial effects:

[0022] 1. The present invention adopts a method in which two groups of detection mechanisms alternately perform loading and unloading and inflation operations under the control of the first sliding assembly to realize continuous detection of a batch of gas regulating valves. The airtightness test of the gas regulating valve can be completed during the period when any group of gas regulating valves is switched from the inflation area to the loading and unloading area. At the same time, another group of gas regulating valves will be inflated. Compared with the traditional single-group intermittent operation method, the entire detection time is greatly shortened, thereby improving the detection efficiency of a batch of gas regulating valves.

[0023] 2. The present invention cooperates with the second sliding assembly and multiple groups of sealing and positioning assemblies to quickly seal and lock a plurality of gas regulating valves placed in the positioning seat. At the same time, the sealing and positioning assembly cooperates with the auxiliary support assembly to further support and limit the gas regulating valve. And it can quickly release the fixation and the bottom support of all the gas regulating valves after the test, and the gas regulating valve automatically discharges from the lower side of the positioning seat, making loading and unloading more convenient.

[0024] 3. By cooperating the pressure compensation component with the pressure detector, after stopping inflating the inside of the gas regulating valve, the communication volume between the inside of the compensation pipe and the air supply seat is increased, that is, the gas filling space, so as to adjust the internal pressure of the gas regulating valve, ensure that the internal pressure of the gas regulating valve is closer to the preset value at the beginning of the test, and improve the accuracy of subsequent tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an overall three-dimensional structure diagram of the present invention.

[0026] Figure 2 It is a schematic diagram of the relative position structure after the detection mechanism and the inflation mechanism are aligned in the present invention.

[0027] Figure 3 It is a schematic diagram of the structure of the detection mechanism and the slide rail assembly I in the present invention.

[0028] Figure 4 It is a front view sectional view of the detection mechanism in the present invention.

[0029] Figure 5 It is Figure 4 an enlarged schematic view of area A in

[0030] Figure 6 It is a partial structure schematic diagram of the positioning seat in the present invention.

[0031] Figure 7 It is a front view sectional view of the sealing positioning component and the pressure compensation component in the present invention.

[0032] Figure 8 It is a schematic diagram of the state after the sealing pipe moves a certain distance after the gas regulating valve is placed in the positioning channel

[0033] Figure 9 It is a schematic diagram of the initial relative position state of the gas regulating valve placed in the positioning channel and the sealing pipe.

[0034] Figure 10 It is a schematic diagram of the state after the gas regulating valve of the present invention is placed in the positioning seat from a top view perspective.

[0035] Reference numerals in the drawings: 1, cabinet; 2, main controller; 3, first sliding assembly; 31, slide rail; 32, first screw; 33, first connecting block; 4, detection mechanism; 41, positioning seat; 42, positioning channel; 421, movable cavity; 422, first through hole; 423, second through hole; 424, third through hole; 43, sealing and positioning assembly; 431, sealing platform; 432, sealing pipe; 433, air supply seat; 434, injection pipe; 435, sealing plate; 44, pressure detector; 45, pressure compensation assembly; 451, compensation pipe; 452, piston; 453, second screw; 454, sleeve; 46, auxiliary support assembly; 461, rotating shaft; 462, support plate; 463, gear set; 464, toothed plate; 47, second sliding assembly; 471, second connecting block; 472, third screw; 5, inflation mechanism; 51, support plate; 52, cylinder; 53, air delivery plate; 54, air delivery pipe; 55, air supply pipe; 6, valve body; 7, valve cover; 8, output pipe; 9, input pipe. Detailed implementation manners

[0036] The following Figure 1 - attached Figure 10 is a further detailed description of the present invention.

[0037] Please refer to Figure 1 , a gas pressure regulating valve airtightness automatic detection device, including a cabinet 1, a main controller 2 with a display screen is fixedly arranged at the rear side of the upper end surface of the cabinet 1, a first sliding assembly 3 is arranged at the front side of the upper end surface of the cabinet 1, two groups of detection mechanisms 4 are arranged on the first sliding assembly 3 in a left-right distribution, and an inflation mechanism 5 is arranged above the cabinet 1. The left and right side areas of the cabinet 1 are both set as loading and unloading areas, and the area above the cabinet 1 and below the inflation mechanism 5 is set as an inflation area.

[0038] Refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 , the detection mechanism 4 includes a positioning seat 41 connected to the first sliding assembly 3 on both the front and rear sides, a positioning channel 42 is opened on the positioning seat 41, multiple groups of sealing and positioning assemblies 43 are arranged in the positioning channel 42, a pressure detector 44 is arranged on the sealing and positioning assembly 43, and the pressure detector 44 can be connected and communicate with the main controller 2 through a communication module. And a pressure compensation assembly 45 and an auxiliary support assembly 46 are also connected to the sealing and positioning assembly 43, and a second sliding assembly 47 is jointly arranged between multiple groups of sealing and positioning assemblies 43 and the positioning seat 41.

[0039] Refer to Figure 3 , Figure 5 and Figure 6, the positioning channel 42 includes a movable cavity 421 opened inside the positioning seat 41 and extending along its length direction. A plurality of first through holes 422 which are circular and evenly distributed along its length direction are opened on the upper side of the movable cavity 421. A second through hole 423 which is rectangular and extends along its length direction is opened on the lower side of the movable cavity 421. And a plurality of third through holes 424 which are circular and evenly distributed along its length direction are also opened on the lower side of the movable cavity 421. The first through holes 422 and the third through holes 424 have the same diameter and are distributed in a left-right staggered manner. The sealing and positioning components 43 correspond to the first through holes 422 one by one. The gas regulating valve is composed of a valve body 6, a valve cover 7 installed on the upper side of the valve body 6, and an input pipe 9 and an output pipe 8 respectively fixed on the front and rear sides of the valve body 6. The valve cover 7 is in a disc shape and its diameter is slightly smaller than the diameters of the first through holes 422 and the third through holes 424. The diameter of the valve cover 7 is also slightly smaller than the width of the movable cavity 421 and larger than the width of the second through hole 423. The width of the valve body 6 is slightly smaller than the width of the second through hole 423. The overall length of the output pipe 8, the valve body 6 and the input pipe 9 is slightly smaller than the diameter of the valve cover 7.

[0040] Refer to Figure 4 , Figure 5 and Figure 7 , the sealing and positioning components 43 include a sealing platform 431 and a sealing pipe 432. The corresponding sealing platform 431 and the sealing pipe 432 are respectively arranged on the front and rear sides of the corresponding first through hole 422. The sealing platform 431 is fixedly arranged in the second through hole 423. One end of the sealing pipe 432 far from the sealing platform 431 is fixedly connected with a gas supply seat 433 which is slidably connected with the second through hole 423. The gas supply seat 433 is connected with the sliding component two 47. The inside of the gas supply seat 433 is a hollow structure and is communicated with the corresponding sealing pipe 432. An injection pipe 434 with a one-way valve is arranged on the upper side of the gas supply seat 433. The lower port of the injection pipe 434 is communicated with the inside of the gas supply seat 433. A sealing plate 435 is fixedly sleeved on the side of the sealing pipe 432 close to the corresponding sealing platform 431. Sealing gaskets (not shown in the figure) are laid on the side walls of the sealing platform 431 and the corresponding sealing plate 435 which are close to each other. The pressure detector 44 is fixedly arranged inside the sealing pipe 432. The pressure detector 44 is located between the corresponding sealing platform 431 and the gas supply seat 433. The outer diameter of the sealing pipe 432 is slightly smaller than the inner diameter of the output pipe 8 so as to facilitate the quick and stable insertion of the sealing pipe 432 into the output pipe 8.

[0041] Refer to Figure 4 and Figure 5, the auxiliary support component 46 includes a rotating shaft 461 rotatably disposed in the second through hole 423. A support plate 462 is fixedly connected to the rotating shaft 461. Gear sets 463 are provided at both the left and right ends of the rotating shaft 461. Each gear set 463 includes a first gear and a second gear that mesh with each other. The first gear is fixedly connected to the rotating shaft 461, and the second gear is rotatably disposed in the second through hole 423 through a connecting shaft. On the side of the air supply seat 433 away from the corresponding sealing pipe 432, two symmetrically arranged triangular toothed plates 464 are fixedly provided. On the lower side of the horizontal section of the toothed plate 464, a plurality of teeth are fixedly provided and evenly distributed along its length direction. The lower side of the horizontal section of the toothed plate 464 meshes with the corresponding second gear through a plurality of teeth.

[0042] Refer to Figure 3 , Figure 5 and Figure 6 , on both the left and right inner walls of the second through hole 423, a plurality of sliding holes extending along its length direction are provided. The second sliding component 47 includes a second connecting block 471 slidably disposed in the sliding hole. The left and right sides of the air supply seat 433 are respectively fixedly connected to the corresponding second connecting blocks 471. On both the left and right sides of the positioning seat 41, a third screw 472 is rotatably disposed through an ear seat II. The third screw 472 is threadedly connected to all the second connecting blocks 471 on its same side. The same ends of the two third screws 472 are jointly driven by a second sprocket set. A third motor is fixedly provided on any one of the ear seats II, and the output shaft of the third motor is fixedly connected to one end of the corresponding third screw 472.

[0043] Refer to Figures 2 to 10 , specific operation: During feeding, the positioning seat 41 moves to the corresponding loading and unloading area for feeding. Through an external feeding device, a number of gas regulating valves are vertically placed into the corresponding movable cavity 421 through the corresponding first through hole 422 above the positioning seat 41. At this time, part of the valve cover 7 of the gas regulating valve enters the movable cavity 421 and is supported by the inner bottom surface of the movable cavity 421 (as shown in Figure 10 ), and part of the valve body 6 below the valve cover 7 is in the second through hole 423 (as shown in Figure 9 ). Then, the third motor drives the corresponding third screw 472 to rotate and cooperate with the second sprocket set to make the two third screws 472 rotate to drive the second connecting blocks 471 to move, so that the second connecting blocks 471 drive the air supply seat 433 to move. The air supply seat 433 moves towards the corresponding gas regulating valve and makes the sealing pipe 432 on the air supply seat 433 insert into the output pipe 8 of the gas regulating valve. At the same time, the sealing plate 435 on the surface of the sealing pipe 432 abuts against the port of the output pipe 8 of the gas regulating valve (as shown in Figure 8As shown). Then the gas supply seat 433 continues to move, and the sealing plate 435 on the surface of the sealing pipe 432 pushes the gas regulating valve to move, causing the input pipe 9 to move towards the sealing table 431. Eventually, the port of the input pipe 9 of the gas regulating valve abuts against the side wall of the sealing table 431. At this time, the input pipe 9 and the output pipe 8 of the gas regulating valve are respectively sealed by the sealing table 431 and the sealing plate 435 (as Figure 5 shown), and at the same time, the valve cover 7 of the gas regulating valve is directly above the port of the third through hole 424 after moving a certain distance (as Figure 5 shown). And during the movement of the gas supply seat 433 towards the gas regulating valve, it will synchronously drive the rack 464 to move. The movement of the rack 464 in cooperation with the gear set 463 will cause the support plate 462 to rotate from an inclined state to a horizontal state, so that the support plate 462 abuts against the lower side of the valve body 6 to support the lower side of the valve body 6. Eventually, all the gas regulating valves are simultaneously fixed on the positioning seat 41. After that, it can be moved through the first sliding assembly 3.

[0044] During inflation: The gas regulating valve locked on the positioning seat 41 is moved to the lower part of the inflation mechanism 5 through the first sliding assembly 3, and the inflation mechanism 5 inflates the injection pipe 434. The gas passes through the gas supply seat 433 and the sealing pipe 432 and enters the corresponding gas regulating valve. A one-way valve is provided in the injection pipe 434, and the specific pressure is detected by the pressure detector 44 in the sealing pipe 432, and the gas supply stops when the internal pressure of the gas regulating valve reaches the preset value.

[0045] During detection: After the gas regulating valve on the positioning seat 41 is inflated, the first sliding assembly 3 drives the positioning seat 41 to move towards the corresponding loading and unloading area to make way for another positioning seat 41, facilitating the inflation of the gas regulating valve on the next positioning seat 41. At the same time, during the movement of the positioning seat 41 from below the inflation mechanism 5 to the loading and unloading area, the pressure detector 44 in the sealing pipe 432 continuously detects the pressure in the gas regulating valve and transmits the detection data during this period to the main controller 2 for analysis and judgment, and completes the test work on the gas regulating valve within this time.

[0046] When blanking; after completing the test work, at this time, the positioning seat 41 is at the leftmost or rightmost side of the slide rail 31, and the lower side of the positioning seat 41 is in a suspended state and located in the loading and unloading area. At this time, the motor three is used to control the connecting block two 471 to move in the reverse direction, so that the sealing pipe 432 is withdrawn from the output pipe 8 of the gas regulating valve. The gas regulating valve will not move in the reverse direction following the sealing pipe 432 and stays above the third through hole 424. At the same time, the toothed plate 464 moves in the reverse direction, causing the support plate 462 to rotate in the reverse direction and move away from the lower side of the valve body 6 to release the support for the gas regulating valve. At this time, after the gas regulating valve loses its limit, the gas regulating valve will slide out along the second through hole 423 and the third through hole 424 and be automatically collected by the external material receiving device, and then reloaded through the external feeding device. This cycle continues.

[0047] Refer to Figure 1 and Figure 3 As shown in FIGS. and, the sliding assembly one 3 includes slide rails 31 fixedly arranged on the upper side of the cabinet 1 and distributed front and back. The left and right sides of the slide rails 31 extend along the length direction of the cabinet 1 and exceed the left and right edges of the upper side of the cabinet 1. A screw rod one 32 is rotatably arranged on the slide rails 31 through an ear seat one. Two connecting blocks one 33 are arranged on the screw rod one 32 in a threaded manner. The front and back sides of the positioning seat 41 are respectively fixedly connected to the corresponding connecting blocks one 33. Any same ends of the two screw rods one 32 are jointly connected through a sprocket group one. An electric motor one is fixedly arranged on any one of the ear seats one, and the output shaft of the electric motor one is fixedly connected to the corresponding end of the screw rod one 32.

[0048] During specific operation, the electric motor one drives the screw rod one 32 to rotate, and cooperates with the sprocket group one to drive the two screw rods one 32 to rotate, so that the connecting block one 33 moves to drive the corresponding positioning seat 41 to move.

[0049] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown in FIGS.,, and, the inflation mechanism 5 includes a support plate 51 fixedly connected to the front side of the main controller 2. An air cylinder 52 is fixedly connected to the upper side of the support plate 51. The telescopic end of the air cylinder 52 is fixedly connected to an air delivery plate 53 with a hollow structure inside. A plurality of air delivery pipes 54 communicating with the inside thereof are fixedly arranged on the lower side of the air delivery plate 53. An air supply pipe 55 communicating with the inside thereof is arranged on the air delivery plate 53, and the air supply pipe 55 is connected to an external air supply device.

[0050] During specific operation, when the positioning seat 41 moves below the inflation mechanism 5, the injection pipe 434 on the air supply seat 433 is aligned with the corresponding air delivery pipe 54 above, and then the air cylinder 52 extends so that the air delivery pipe 54 can be inserted into the injection pipe 434 to supply air to the air supply seat 433.

[0051] Refer to Figure 5 and Figure 7, the pressure compensation component 45 includes a compensation pipe 451 internally connected to the air supply seat 433, a piston 452 slidably disposed in the compensation pipe 451, and a control member for controlling the movement of the piston 452; the control member includes a second screw 453. One end of the compensation pipe 451 away from the air supply seat 433 is internally fixedly provided with a second motor through a bracket. A second screw 453 is fixedly connected to the output shaft of the second motor. One end of the second screw 453 away from the second motor is threadedly connected to a sleeve 454. One end of the sleeve 454 away from the second motor is fixedly connected to the piston 452. And a guide rod is provided on the side of the piston 452 close to the second motor, and the guide rod is slidably connected to the bracket.

[0052] During specific operation, when the gas supply device stops supplying gas, the pressure detector 44 detects the pressure inside the gas control valve. When the pressure value inside the gas control valve is greater than the preset gas supply value of the gas control valve, the second motor is driven to rotate the second screw 453, so that the second screw 453 drives the piston 452 to move in a direction away from the air supply seat 433, increasing the communication volume between the inside of the compensation pipe 451 and the air supply seat 433, thereby reducing the air pressure inside the corresponding gas control valve, realizing fine adjustment of the internal air pressure after inflation of the gas control valve, and making the pressure at the initial detection of the gas control valve as close as possible to the preset standard value.

[0053] Refer to Figures 1 - 10 , in addition, the present invention also provides a method for automatically detecting the airtightness of a gas control valve, which is completed in cooperation with the above-mentioned device for automatically detecting the airtightness of a gas control valve, and includes the following steps:

[0054] S1. Loading: Initially, the two side positioning seats 41 are simultaneously located in the upper and lower material areas on the right side of the cabinet 1, and both are in an empty state. Then, the gas control valve is placed on the positioning seat 41 through an external loading device for loading and locking.

[0055] S2. Inflation: The left positioning seat 41 moves from the upper and lower material areas on the left side of the cabinet 1 towards the inflation area through the first sliding assembly 3. After moving to the inflation area, the gas control valve is inflated.

[0056] S3. Detection and data uploading: After the gas control valve on the left positioning seat 41 is inflated, the left positioning seat 41 is driven by the first sliding assembly 3 to move from the inflation area towards the upper and lower material areas on the left side of the cabinet 1. During this process, the pressure change of the inflated gas control valve is detected by the corresponding pressure detector 44, and the test data is uploaded to the main controller 2 for analysis and processing. At the same time, the first sliding assembly 3 will also drive the right positioning seat 41 to move towards the inflation area.

[0057] S4, unloading and loading: After the left positioning seat 41 reaches the left loading and unloading area, the gas regulating valves after the internal test are automatically discharged from the lower side, and the qualified and unqualified gas regulating valves are classified and collected through the external receiving equipment. At the same time, the gas regulating valves on the right positioning seat 41 are inflated, and the loading operation of the gas regulating valves is carried out on the unloaded positioning seat 41.

[0058] S5, cycle: the gas regulating valve on the right positioning seat 41 moves to the right after inflation through the sliding component 3, and the left positioning seat 41 moves to the right synchronously after re-loading, and the continuous detection operation of batch gas regulating valves is carried out in this reciprocating manner.

[0059] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automatic airtightness detection device for a gas pressure regulating valve, comprising a cabinet (1), and a main controller (2) is fixedly arranged at the rear side of the upper end surface of the cabinet (1), characterized in that: A sliding component one (3) is arranged on the front side of the upper end face of the cabinet (1). Two groups of detection mechanisms (4) distributed left and right are arranged on the sliding component one (3). An inflation mechanism (5) is arranged above the cabinet (1). The detection mechanism (4) includes a positioning seat (41) connected to the sliding component one (3) on both the front and rear sides. A positioning channel (42) is opened on the positioning seat (41). A plurality of sealing and positioning components (43) are arranged in the positioning channel (42). The sealing and positioning components (43) are used for sealing and fixing both ends of the gas pressure regulating valve. A pressure detector (44), a pressure compensation component (45), and an auxiliary support component (46) are arranged on the sealing and positioning component (43). A sliding component two (47) is jointly arranged between the plurality of sealing and positioning components (43) and the positioning seat (41). The sealing and positioning component (43) includes a gas supply seat (433). The compensation component (45) includes a compensation pipe (451) communicated with the inside of the gas supply seat (433). A piston (452) and a control member for controlling the movement of the piston (452) are slidably arranged in the compensation pipe (451). The two groups of detection mechanisms (4) are controlled by the sliding component one (3) to alternately carry out loading, unloading, inflation, and detection operations. After inflation stops, the internal air pressure of the gas regulating valve is adjusted by moving the piston (452) to increase the communication volume between the compensation pipe (451) and the gas supply seat (433).

2. The automatic airtightness detection device for a gas pressure regulator according to claim 1, characterized in that, The sliding component one (3) includes slide rails (31) fixedly arranged on the upper side of the cabinet (1) and distributed front and rear. The left and right sides of the slide rails (31) extend along the length direction of the cabinet (1) and exceed the left and right edges of the upper side of the cabinet (1). A screw rod one (32) is rotatably arranged on the slide rails (31) through an ear seat one. Two connection blocks one (33) are threadedly arranged on the screw rod one (32). The front and rear sides of the positioning seat (41) are respectively fixedly connected to the corresponding connection blocks one (33).

3. The automatic airtightness detection device for a gas pressure regulator according to claim 1, characterized in that, The positioning channel (42) includes a movable cavity (421) opened inside the positioning seat (41) and extending along its length direction. A plurality of circular first through holes (422) evenly distributed along its length direction are opened on the upper side of the movable cavity (421). A rectangular second through hole (423) extending along its length direction is opened on the lower side of the movable cavity (421). A plurality of circular third through holes (424) evenly distributed along its length direction are further opened on the lower side of the movable cavity (421). The first through holes (422) and the third through holes (424) have the same diameter and are distributed in a left-right staggered manner. The sealing and positioning components (43) correspond to the first through holes (422) one by one.

4. An automatic airtightness detection device for a gas pressure regulator according to claim 3, characterized in that, The sealing and positioning assembly (43) further includes a sealing platform (431) and a sealing pipe (432). The corresponding sealing platform (431) and sealing pipe (432) are respectively arranged on the front and rear sides of the corresponding first through hole (422). The sealing platform (431) is fixedly arranged in the second through hole (423). One end of the sealing pipe (432) far from the sealing platform (431) is fixedly connected with a gas supply seat (433) slidably connected with the second through hole (423). The gas supply seat (433) is connected with the second sliding assembly (47). The interior of the gas supply seat (433) is of a hollow structure and is communicated with the corresponding sealing pipe (432). An injection pipe (434) with a one-way valve is arranged on the upper side of the gas supply seat (433). The lower port of the injection pipe (434) is communicated with the interior of the gas supply seat (433).

5. The automatic airtightness detection device for a gas pressure regulator according to claim 4, characterized in that, A sealing plate (435) is fixedly sleeved on one side of the sealing pipe (432) close to the corresponding sealing platform (431). Sealing gaskets are laid on the side walls of the sealing platform (431) and the sealing plate (435) close to each other. The pressure detector (44) is fixedly arranged inside one end of the sealing pipe (432) far from the corresponding gas supply seat (433).

6. The automatic airtightness detection device for a gas pressure regulating valve according to claim 4, wherein, The control member includes a second screw rod (453). Inside one end of the compensation pipe (451) far from the gas supply seat (433), a second motor is fixedly arranged through a bracket. A second screw rod (453) is fixedly connected to the output shaft of the second motor. One end of the second screw rod (453) far from the second motor is in threaded connection with a sleeve (454). One end of the sleeve (454) far from the second motor is fixedly connected with a piston (452). A guide rod is arranged on one side of the piston (452) close to the second motor. The guide rod is slidably connected with the bracket.

7. An automatic airtightness detection device for a gas pressure regulator according to claim 4, characterized in that, The auxiliary support assembly (46) includes a rotating shaft (461) rotatably arranged in the second through hole (423). A support plate (462) is fixedly connected to the rotating shaft (461). Gear sets (463) are arranged at both the left and right ends of the rotating shaft (461). Each gear set (463) includes a first gear and a second gear that mesh with each other. The first gear is fixedly connected to the rotating shaft (461). The second gear is rotatably arranged in the second through hole (423) through a connecting shaft. On one side of the gas supply seat (433) far from the corresponding sealing pipe (432), two symmetrically arranged triangular toothed plates (464) are fixedly arranged. A plurality of teeth blocks evenly distributed along the length direction thereof are fixedly arranged on the lower side of the horizontal section of the toothed plate (464). The lower side of the horizontal section of the toothed plate (464) meshes with the corresponding second gear through a plurality of teeth blocks.

8. An automatic airtightness detection device for a gas pressure regulator according to claim 5, characterized in that, A plurality of sliding holes extending along the length direction thereof are formed in both the left and right inner walls of the second through hole (423). The second sliding assembly (47) includes a second connecting block (471) slidably arranged in the sliding holes. The left and right sides of the gas supply seat (433) are respectively fixedly connected with the corresponding second connecting blocks (471). On both the left and right sides of the positioning seat (41), a third screw rod (472) is rotatably arranged through an ear seat. The third screw rod (472) is in threaded connection with all the second connecting blocks (471) on the same side thereof.

9. The automatic airtightness detection device for a gas pressure regulator according to claim 1, wherein, The inflation mechanism (5) includes a support plate (51) fixedly connected to the front side of the main controller (2). A cylinder (52) is fixedly connected to the upper side of the support plate (51). The telescopic end of the cylinder (52) is fixedly connected to an air delivery plate (53) with a hollow structure inside. A plurality of air delivery pipes (54) communicating with the inside thereof are fixedly arranged on the lower side of the air delivery plate (53). An air supply pipe (55) communicating with the inside thereof is arranged on the air delivery plate (53).

10. An automatic airtightness detection method for a gas pressure regulating valve, characterized in that, It is completed in cooperation with an automatic airtightness detection device for a gas pressure regulating valve as described in Claim 1, and the steps are as follows: S1. Loading: Place the gas pressure regulating valve to be detected in the positioning channel (42), and seal and fix both ends through the sealing and positioning assembly (43). S2. Inflation: The positioning seat (41) loaded with the gas regulating valve moves towards the inflation mechanism (5) through the first sliding assembly (3). After the positioning seat (41) moves to the inflation mechanism (5), the corresponding gas regulating valve is inflated. S3. Detection and data uploading: The first sliding assembly (3) drives the positioning seat (41) loaded with the inflated gas regulating valve to move towards the corresponding side end of the cabinet (1), and during this process, it is detected by the pressure detector (44) and the data is uploaded to the main controller (2) for analysis and processing. At the same time, the positioning seat (41) loaded with the non-inflated gas regulating valve moves towards the inflation mechanism (5). S4. Unloading and loading: The gas regulating valve in the positioning seat (41) after the test is automatically discharged downward, and then loading is carried out. At the same time, the gas regulating valve on the positioning seat (41) corresponding to the inflation mechanism (5) is inflated. S5. Circular detection: The inflated gas regulating valve is moved towards the corresponding side end of the cabinet (1) through the first sliding assembly (3), and the newly loaded gas regulating valve moves towards the inflation mechanism (5) synchronously, and continuous detection operations of a batch of gas regulating valves are carried out reciprocally in this way.

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