Gas pressure regulating valve air tightness automatic detection device and detection method

Abstract

This invention belongs to the field of regulating valve testing technology, and particularly relates to an automatic testing device and method for the airtightness of gas pressure regulating valves. The device includes a cabinet, with a sliding assembly on the front of the upper end of the cabinet. Two sets of testing mechanisms are arranged on the sliding assembly, distributed left and right. The area on the upper side of the cabinet, below the inflation mechanism, is designated as the inflation area. This invention uses two sets of testing mechanisms, controlled by the sliding assembly, to alternately perform loading, unloading, and inflation operations, achieving continuous testing of batch gas regulating valves. Compared to the traditional single-set intermittent operation method, this significantly shortens the overall testing time, thereby improving the testing efficiency of batch gas regulating valves. Furthermore, this invention uses a pressure compensation component in conjunction with a pressure detector to increase the communication volume between the compensation pipe and the gas supply seat after the inflation of the gas regulating valve stops, thereby adjusting the internal pressure of the gas regulating valve.

Description

Technical Field

[0001] This invention belongs to the field of regulating valve testing technology, and particularly relates to an automatic testing device and method for the airtightness of a gas pressure regulating valve. Background Technology

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

[0003] Existing gas pressure testing devices require the gas regulating valve to be fixed and sealed before being filled with gas. After filling, a period of time is waited, and the pressure is checked by the corresponding testing components to see if it has dropped to the preset value during this period.

[0004] However, the testing device has the following drawbacks: 1. To improve testing efficiency, multiple gas regulating valves are usually fixed simultaneously on the testing platform for synchronous pressure testing. After the gas regulating valves are filled with gas, they need to wait for a period of time before the testing component checks their airtightness. After the test is completed, all the gas regulating valves are removed. The testing time for the same group of gas regulating valves is relatively long, and the overall efficiency of batch testing needs to be improved. 2. The gas regulating valves are filled with gas after the input and output ports are sealed. When the pressure detection component detects that the internal pressure of the gas regulating valve has reached the predetermined value, the gas supply equipment automatically stops supplying gas. However, due to the large gas flow rate of the gas supply equipment, even if the gas supply equipment stops supplying gas immediately upon receiving the shut-off signal, the actual internal pressure of the gas regulating valve may still be slightly higher than the preset pressure after the gas supply has completely stopped, thus affecting the final test results. The test accuracy needs to be improved. Summary of the Invention

[0005] In view of the above problems, the present invention provides an automatic gas pressure regulating valve airtightness testing device and testing method, which, compared with the traditional intermittent testing operation of step-by-step loading and unloading, is equipped with two sets of testing mechanisms and implements staggered loading and unloading and gas filling actions, shortens the test waiting time, improves the efficiency of batch testing of gas regulating valves, and adjusts the gas pressure of the gas regulating valve after the gas supply equipment stops supplying gas.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The present invention provides an automatic gas pressure regulating valve airtightness detection device, including a cabinet. A main controller is fixedly installed on the rear side of the upper end face of the cabinet. The left and right sides of the cabinet are both designated as loading and unloading areas. A sliding component one is installed on the front side of the upper end face of the cabinet. Two sets of detection mechanisms are arranged on the sliding component one, distributed left and right. An inflation mechanism is installed above the cabinet. The area on the upper side of the cabinet and below the inflation mechanism is designated as an inflation area. The detection mechanism includes a positioning seat connected to the sliding component one on both the front and rear sides. A positioning channel is opened on the positioning seat. Multiple sets of sealing positioning components are installed in the positioning channel. A pressure detector is installed on the sealing positioning component. A pressure compensation component and an auxiliary support component are also connected to the sealing positioning component. A sliding component two is arranged between the multiple sets of sealing positioning components and the positioning seat. The sealing positioning component includes a gas supply seat. The compensation component includes a compensation pipe communicating with the interior of the gas supply seat. A piston and a control component for controlling the movement of the piston are slidably installed in the compensation pipe.

[0007] According to an advantageous embodiment, the sliding assembly includes slide rails fixedly mounted on the upper side of the cabinet and distributed front to back. The left and right sides of the slide rails extend along the length of the cabinet and exceed the left and right edges of the upper side of the cabinet. A screw is rotatably mounted on the slide rail via an ear seat. Two connecting blocks are threaded onto the screw. The front and rear sides of the positioning seat are fixedly connected to the corresponding connecting blocks. The same end of either of the two screws is connected via a sprocket assembly. A motor is fixedly mounted on either ear seat, and the output shaft of the motor is fixedly connected to the end of the screw corresponding to it.

[0008] According to an advantageous embodiment, the positioning channel includes a movable cavity formed inside the positioning seat and extending along its length. The upper side of the movable cavity has a plurality of circular first through holes evenly distributed along its length. The lower side of the movable cavity has a rectangular second through hole extending along its length. The lower side of the movable cavity also has a plurality of circular third through holes evenly distributed along its length. The first and third through holes have the same diameter and are vertically corresponding. The first and second through holes are staggered horizontally. The sealing positioning component corresponds to the first through hole one by one.

[0009] According to an advantageous embodiment, the sealing positioning assembly further includes a sealing platform and a sealing tube, with the corresponding sealing platform and sealing tube respectively disposed on the front and rear sides of the corresponding first through hole. The sealing platform is fixedly disposed in the second through hole. The end of the sealing tube away from the sealing platform is fixedly connected to an air supply seat that is slidably connected to the second through hole. The air supply seat is connected to the sliding assembly. The interior of the air supply seat is a hollow structure and communicates with the corresponding sealing tube. An air injection pipe with a one-way valve is disposed on the upper side of the air supply seat, and the lower end of the air injection pipe communicates with the interior of the air supply seat.

[0010] According to an advantageous embodiment, a sealing plate is fixedly fitted on the side of the sealing tube near the corresponding sealing platform, and sealing gaskets are laid on the side walls of the sealing platform and the sealing plate that are close to each other. The pressure detector is fixedly installed 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 pipe communicating with the interior of the air supply seat, the control component includes a second screw, a second motor is fixedly mounted inside the end of the compensation pipe away from the air supply seat via a bracket, the second screw is fixedly connected to the output shaft of the second motor, a sleeve is threadedly connected to the end of the second screw away from the second motor, the end of the sleeve away from the second motor is fixedly connected to a piston, and a guide rod is provided on the side of the piston near the second motor, the guide rod being slidably connected to the bracket.

[0012] According to an advantageous embodiment, the auxiliary support assembly includes a rotating shaft rotatably disposed within a second through hole, a support plate fixedly connected to the rotating shaft, and gear sets disposed at both ends of the rotating shaft. The gear sets include a first gear and a second gear that mesh with each other. The first gear is fixedly connected to the rotating shaft, and the second gear is rotatably disposed within the second through hole via a connecting shaft. Two symmetrical triangular toothed plates are fixedly disposed on the side of the air supply seat away from the corresponding sealing pipe. Multiple toothed blocks are fixedly disposed on the lower side of the horizontal section of the toothed plates, which mesh with the corresponding second gear through the multiple toothed blocks.

[0013] According to an advantageous embodiment, the left and right inner walls of the second through hole are provided with a plurality of sliding holes extending along its length direction. The sliding assembly 2 includes a connecting block 2 slidably disposed in the sliding hole. The left and right sides of the air supply seat are respectively fixedly connected to the corresponding connecting block 2. The left and right sides of the positioning seat are rotatably provided with screw 3 through ear seat 2. The screw 3 is threadedly connected to all the connecting blocks 2 on the same side. The same end of any two screw 3s is connected through a sprocket group 2 for transmission. A motor 3 is fixedly disposed on any ear seat 2. The output shaft of the motor 3 is fixedly connected to one end of the corresponding screw 3.

[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 fixedly connected to the upper side of the support plate, an air supply plate with a hollow internal structure fixedly connected to the telescopic end of the cylinder, a plurality of air supply pipes communicating with the interior of the air supply plate fixedly arranged on the lower side of the air supply plate, an air supply pipe communicating with the interior of the air supply plate, and the air supply pipe being connected to an external air supply device.

[0015] This invention also provides an automatic method for detecting the airtightness of a gas pressure regulating valve, which is accomplished using the aforementioned 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 seals and fixes both ends through the sealing positioning component;

[0017] S2, Inflation: The positioning seat of the gas regulating valve moves toward the inflation area via the sliding component. After the positioning seat moves to the inflation area, the corresponding gas regulating valve is inflated.

[0018] S3. Detection and data upload: The sliding component moves the positioning seat of the gas regulating valve after it has been filled with gas towards the loading and unloading area of ​​the corresponding cabinet. During this process, the pressure detector detects the gas and uploads the data to the main controller for analysis and processing. At the same time, the positioning seat of the gas regulating valve that has not been filled with gas moves towards the filling area.

[0019] S4. Unloading and loading: After the test is completed in the positioning seat, the gas regulating valve automatically discharges downwards and then loads the material. At the same time, the gas regulating valve on the positioning seat in the inflation area receives inflation.

[0020] S5. Cyclic Inspection: The gas regulating valve after inflation is moved to the corresponding loading and unloading area by the sliding component, and the refilled gas regulating valve moves synchronously to the inflation area. This process is repeated to perform continuous inspection of batch gas regulating valves.

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

[0022] 1. This invention employs two sets of testing mechanisms that alternately perform loading, unloading, and inflation operations under the control of a sliding component, thereby enabling continuous testing of batch gas regulating valves. The airtightness test of any set of gas regulating valves can be completed during the transition from the inflation area to the loading / unloading area, while the other set of gas regulating valves will be inflated. Compared to the traditional single-set intermittent operation method, this significantly shortens the overall testing time, thereby improving the testing efficiency of batch gas regulating valves.

[0023] 2. This invention uses a sliding component two in conjunction with multiple sets of sealing and positioning components to quickly seal and lock multiple gas regulating valves placed in the positioning seat. Simultaneously, the sealing and positioning components work with auxiliary support components to further support and limit the movement of the gas regulating valves. Furthermore, after testing, all gas regulating valves can be quickly released from their fixings and base supports, and the gas regulating valves automatically discharge from under the positioning seat, making loading and unloading more convenient.

[0024] 3. This invention uses a pressure compensation component in conjunction with a pressure detector to increase the communication volume between the compensation pipe and the gas supply seat, i.e., the gas filling space, after stopping the filling of gas into the gas regulating valve. This adjusts the internal pressure of the gas regulating valve, ensuring that the internal pressure of the gas regulating valve is closer to the preset value at the beginning of the test, thereby improving the accuracy of subsequent tests. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a schematic diagram showing the relative positions of the detection mechanism and the inflation mechanism after alignment in this invention.

[0027] Figure 3 This is a schematic diagram of the detection mechanism and slide rail assembly in this invention.

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

[0029] Figure 5 for Figure 4 An enlarged schematic diagram of region A in the middle.

[0030] Figure 6 This is a partial structural diagram of the positioning seat in this invention.

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

[0032] Figure 8 This is a schematic diagram showing the state of the sealing pipe after it has moved a certain distance following the placement of the gas regulating valve within the positioning channel.

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

[0034] Figure 10 This is a top-down view showing the state of the gas regulating valve of the present invention after it has been placed inside the positioning seat.

[0035] Figure reference numerals: 1. Cabinet; 2. Main controller; 3. Sliding assembly one; 31. Slide rail; 32. Screw one; 33. Connecting block one; 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 positioning assembly; 431. Sealing platform; 432. Sealing pipe; 433. Air supply seat; 434. Air injection pipe; 435. Sealing plate; 44. Pressure detector; 45. 451. Pressure compensation assembly; 452. Compensation pipe; 453. Piston; 454. Screw II; 455. Sleeve; 46. Auxiliary support assembly; 461. Rotating shaft; 462. Support plate; 463. Gear set; 464. Gear plate; 47. Sliding assembly II; 471. Connecting block II; 472. Screw III; 5. Inflation mechanism; 51. Support plate; 52. Cylinder; 53. Air supply plate; 54. Air supply pipe; 55. Air supply pipe; 6. Valve body; 7. Valve cover; 8. Output pipe; 9. Input pipe. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1 -Attached Figure 10 The present invention will now be described in further detail.

[0037] Please refer to the following: Figure 1 An automatic gas pressure regulating valve airtightness detection device includes a cabinet 1. A main controller 2 with a display screen is fixedly installed on the rear side of the upper end face of the cabinet 1. A sliding component 3 is installed on the front side of the upper end face of the cabinet 1. Two sets of detection mechanisms 4 are arranged on the sliding component 3, one on the left and one on the right. An inflation mechanism 5 is installed above the cabinet 1. The left and right sides of the cabinet 1 are both designated as loading and unloading areas, and the upper side of the cabinet 1, located below the inflation mechanism 5, is designated as the inflation area.

[0038] See Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 The detection mechanism 4 includes a positioning seat 41 connected to the sliding assembly 3 on both the front and rear sides. The positioning seat 41 has a positioning channel 42, within which multiple sets of sealing positioning assemblies 43 are installed. Each sealing positioning assembly 43 is equipped with a pressure detector 44, which can communicate with the main controller 2 via a communication module. Furthermore, the sealing positioning assembly 43 is also connected to a pressure compensation assembly 45 and an auxiliary support assembly 46. A sliding assembly 47 is shared between the multiple sets of sealing positioning assemblies 43 and the positioning seat 41.

[0039] See Figure 3 , Figure 5 and Figure 6The positioning channel 42 includes a movable cavity 421 that is opened inside the positioning seat 41 and extends along its length. The upper side of the movable cavity 421 has a plurality of first through holes 422 that are evenly distributed along its length and are circular. The lower side of the movable cavity 421 has a second through hole 423 that extends along its length and is rectangular. The lower side of the movable cavity 421 also has a plurality of third through holes 424 that are evenly distributed along its length and are circular. The first through holes 422 and the third through holes 424 have the same diameter and are staggered from left to right. The sealing positioning component 43 corresponds to the first through holes 422 one by one. The gas regulating valve consists of a valve body 6, a valve cover 7 mounted on the upper side of the valve body 6, and an input pipe 9 and an output pipe 8 fixed on the front and rear sides of the valve body 6, respectively. The valve cover 7 is disc-shaped and its diameter is slightly smaller than the diameter of the first through hole 422 and the third through hole 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] See Figure 4 , Figure 5 and Figure 7 The sealing positioning component 43 includes a sealing platform 431 and a sealing tube 432. The sealing platform 431 and the sealing tube 432 are respectively disposed on the front and rear sides of the corresponding first through hole 422. The sealing platform 431 is fixedly disposed in the second through hole 423. The end of the sealing tube 432 away from the sealing platform 431 is fixedly connected to an air supply seat 433 that is slidably connected to the second through hole 423. The air supply seat 433 is connected to the sliding component 47. The interior of the air supply seat 433 is a hollow structure and is connected to the corresponding sealing tube 432. An air injection pipe 434 with a one-way valve is disposed on the upper side of the air supply seat 433. The lower end of the air injection pipe 434 is connected to the interior of the air supply seat 433. A sealing plate 435 is fixedly fitted on the side of the sealing tube 432 near 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 that are close to each other. The pressure detector 44 is fixedly installed inside the sealing tube 432. The pressure detector 44 is located between the corresponding sealing platform 431 and the air supply seat 433. The outer diameter of the sealing tube 432 is slightly smaller than the inner diameter of the output tube 8 so that the sealing tube 432 can be quickly and stably inserted into the output tube 8.

[0041] See Figure 4 and Figure 5The auxiliary support assembly 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. The gear sets 463 include a gear one and a gear two that mesh with each other. Gear one is fixedly connected to the rotating shaft 461. Gear two is rotatably disposed in the second through hole 423 through a connecting shaft. Two symmetrical triangular toothed plates 464 are fixedly disposed on the side of the air supply seat 433 away from the corresponding sealing pipe 432. Multiple toothed blocks are fixedly disposed on the lower side of the horizontal section of the toothed plate 464, which are evenly distributed along its length. The lower side of the horizontal section of the toothed plate 464 meshes with the corresponding gear two through the multiple toothed blocks.

[0042] See Figure 3 , Figure 5 and Figure 6 The left and right inner walls of the second through hole 423 are provided with multiple sliding holes extending along its length. The sliding component 47 includes a 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 connecting block 471. The left and right sides of the positioning seat 41 are rotatably provided with screws 472 through ear seats. The screws 472 and all the connecting blocks 471 on the same side are threadedly connected. The same end of the two screws 472 are connected by a sprocket group 2. A motor 3 is fixedly disposed on any ear seat 2. The output shaft of the motor 3 is fixedly connected to one end of the corresponding screw 472.

[0043] See Figures 2 to 10 Specific operation: During loading, the positioning seat 41 moves to the corresponding loading / unloading area for loading. Several gas regulating valves are vertically inserted into the corresponding movable cavity 421 through the corresponding first through hole 422 above the positioning seat 41 using an external loading device. At this time, 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 (e.g., Figure 10 As shown), the valve body 6 portion on the lower side of the valve cover 7 is located within the second through hole 423 (as shown). Figure 9 (As shown). Then, the motor drives the corresponding screw 472 to rotate, which in turn rotates the sprocket assembly 2, causing both screws 472 to rotate and drive the connecting block 471 to move. This causes the connecting block 471 to move the gas supply seat 433. The gas supply seat 433 moves toward the corresponding gas regulating valve, causing the sealing tube 432 on the gas supply seat 433 to be inserted into the output pipe 8 of the gas regulating valve. At the same time, the sealing plate 435 on the surface of the sealing tube 432 abuts against the port of the output pipe 8 of the gas regulating valve (as shown). Figure 8(As shown). Then, the gas supply seat 433 continues to move, pushing the gas regulating valve through the sealing plate 435 on the surface of the sealing pipe 432, causing the input pipe 9 to move towards the sealing platform 431, ultimately causing the port of the input pipe 9 of the gas regulating valve to abut against the side wall of the sealing platform 431. At this time, the input pipe 9 and the output pipe 8 of the gas regulating valve are sealed by the sealing platform 431 and the sealing plate 435 respectively (as shown). Figure 5 As shown), at the same time, after moving a certain distance, the valve cover 7 of the gas regulating valve is directly above the port of the third through hole 424 (as shown). Figure 5 (As shown). During the movement of the gas supply seat 433 toward the gas regulating valve, it simultaneously drives the toothed plate 464 to move. The movement of the toothed plate 464, in conjunction with the gear set 463, causes the support plate 462 to rotate from an inclined state to a horizontal state, thereby causing the support plate 462 to abut against the lower side of the valve body 6, providing support to the lower side of the valve body 6. Ultimately, all gas regulating valves are simultaneously fixed on the positioning seat 41. Afterwards, they can be moved via the sliding assembly 3.

[0044] During inflation, the gas regulating valve locked on the positioning seat 41 moves to the lower part of the inflation mechanism 5 via the sliding component 3, and the inflation mechanism 5 inflates the gas into the gas injection pipe 434. The gas enters the corresponding gas regulating valve through the gas supply seat 433 and the sealing pipe 432. The gas injection pipe 434 is equipped with a one-way valve. 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 testing, after the gas regulating valve on the positioning seat 41 is fully inflated, the sliding component 3 moves the positioning seat 41 toward the corresponding loading / unloading area to make way for another positioning seat 41, facilitating the inflation of the gas regulating valve on the next positioning seat 41. Simultaneously, as the positioning seat 41 moves from below the inflation mechanism 5 to the loading / unloading area, the pressure detector 44 inside the sealing tube 432 continuously monitors the pressure inside the gas regulating valve and transmits the monitoring data during this period to the main controller 2 for analysis and judgment, completing the testing of the gas regulating valve within this time.

[0046] During material unloading; after the test is completed, the positioning seat 41 is at the far left or far right of the slide rail 31, with its lower side suspended in the unloading area. At this time, the motor controls the connecting block 471 to move in the reverse direction, causing the sealing tube 432 to be pulled out from the gas regulating valve output pipe 8. The gas regulating valve will not follow the sealing tube 432 in the reverse direction and will remain 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 of the gas regulating valve. At this time, after the gas regulating valve loses its limit, it will slide out along the second through hole 423 and the third through hole 424 and be automatically collected by the external receiving device. Then, it will be reloaded by the external loading device. This cycle continues.

[0047] See Figure 1 and Figure 3 The sliding component 3 includes a slide rail 31 fixedly mounted on the upper side of the cabinet 1 and distributed front and back. The left and right sides of the slide rail 31 extend along the length of the cabinet 1 and exceed the left and right edges of the upper side of the cabinet 1. A screw 32 is rotatably mounted on the slide rail 31 via an ear seat. Two connecting blocks 33 are threaded on the screw 32. The front and rear sides of the positioning seat 41 are fixedly connected to the corresponding connecting blocks 33. The same end of either screw 32 is connected to the transmission through a sprocket assembly. A motor is fixedly mounted on either ear seat. The output shaft of the motor is fixedly connected to the corresponding end of the screw 32.

[0048] In actual operation, the motor drives the screw 32 to rotate, which in turn drives the two screws 32 to rotate, causing the connecting block 33 to move and drive the corresponding positioning seat 41 to move.

[0049] See Figure 1 , Figure 2 , Figure 3 and Figure 5 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. An air supply plate 53 with a hollow internal structure is fixedly connected to the telescopic end of the cylinder 52. Multiple air supply pipes 54 communicating with the interior of the air supply plate 53 are fixedly provided on the lower side of the air supply plate 53. An air supply pipe 55 communicating with the interior of the air supply plate 53 is provided on the air supply plate 53. The air supply pipe 55 is connected to an external air supply device.

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

[0051] See Figure 5 and Figure 7The pressure compensation component 45 includes a compensation pipe 451 communicating with the inside of the air supply seat 433, a piston 452 slidably disposed inside the compensation pipe 451, and a control component for controlling the movement of the piston 452. The control component includes a screw 453. A motor 453 is fixedly disposed inside the end of the compensation pipe 451 away from the air supply seat 433 by a bracket. The screw 453 is fixedly connected to the output shaft of the motor 453. A sleeve 454 is threadedly connected to the end of the screw 453 away from the motor 453. The end of the sleeve 454 away from the motor 454 is fixedly connected to the piston 452. A guide rod is disposed on the side of the piston 452 near the motor 452. The guide rod is slidably connected to the bracket.

[0052] In actual operation, when the gas supply equipment stops supplying gas, the pressure detector 44 detects the pressure inside the gas regulating valve. When the pressure inside the gas regulating valve is greater than the preset gas supply value of the gas regulating valve, the motor drives the screw 453 to rotate, causing the screw 453 to drive the piston 452 to move away from the gas supply seat 433, increasing the communication volume between the compensation pipe 451 and the gas supply seat 433, thereby reducing the gas pressure inside the corresponding gas regulating valve. This achieves fine adjustment of the internal gas pressure after the gas regulating valve is filled, so that the pressure of the gas regulating valve at the initial test is as close as possible to the preset standard value.

[0053] See Figures 1-10 Furthermore, the present invention also provides an automatic detection method for the airtightness of a gas regulating valve, which is accomplished in conjunction with the aforementioned automatic detection device for the airtightness of a gas regulating valve, and includes the following steps:

[0054] S1. Loading: Initially, both side positioning seats 41 are located in the loading and unloading area on the right side of cabinet 1, and both are in an unloaded state. Then, the gas regulating valve is placed on the positioning seat 41 by the external loading device for loading and locking.

[0055] S2, Inflation: The left positioning seat 41 moves from the loading / unloading area on the left side of the cabinet 1 to the inflation area via the sliding component 3. After moving to the inflation area, it inflates the gas regulating valve.

[0056] S3. Detection and Data Upload: After the gas regulating valve on the left positioning seat 41 is fully inflated, the left positioning seat 41 is moved from the inflation area to the loading / unloading area on the left side of the cabinet 1 by the sliding component 3. During this process, the pressure change of the gas regulating valve after inflation 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 sliding component 3 will also move the right positioning seat 41 towards the inflation area.

[0057] S4. Unloading and loading: After the left positioning seat 41 reaches the left unloading area, the gas regulating valve that has completed the internal test will automatically discharge from the bottom. The qualified and unqualified gas regulating valves will be collected by the external receiving equipment. At the same time, the gas regulating valve on the right positioning seat 41 will be charged and the gas regulating valve will be loaded on the unloaded positioning seat 41.

[0058] S5. Cycle: The gas regulating valve on the right positioning seat 41 moves to the right after being filled with gas by sliding component 3, and the left positioning seat 41 moves to the right synchronously after being refilled. This process is repeated to perform continuous testing of batch gas regulating valves.

[0059] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An automatic gas pressure regulating valve airtightness detection device, comprising a cabinet (1), wherein a main controller (2) is fixedly installed on the rear side of the upper end face of the cabinet (1), characterized in that: A sliding component (3) is provided on the front side of the upper end of the cabinet (1), and two sets of detection mechanisms (4) are provided on the sliding component (3) and distributed on the left and right. An inflation mechanism (5) is provided on the top of the cabinet (1). The detection mechanism (4) includes a positioning seat (41) connected to the sliding component (3) on both the front and rear sides. The positioning seat (41) is provided with a positioning channel (42). Multiple sets of sealing positioning components (43) are provided in the positioning channel (42). The sealing positioning components (43) are used to seal and fix the gas pressure regulating valve at both ends. The sealing positioning assembly (43) is equipped with a pressure detector (44), a pressure compensation assembly (45), and an auxiliary support assembly (46). Multiple sealing positioning assemblies (43) and the positioning seat (41) are connected by a sliding assembly (47). The sealing and positioning assembly (43) includes an air supply seat (433), and the compensation assembly (45) includes a compensation pipe (451) communicating with the interior of the air supply seat (433). A piston (452) and a control element for controlling the movement of the piston (452) are slidably disposed inside the compensation pipe (451). The sliding component (3) controls the two sets of detection mechanisms (4) to alternately carry out loading and unloading and inflation detection operations. After inflation stops, the gas pressure inside the gas regulating valve is adjusted by increasing the volume of the compensation pipe (451) and the gas supply seat (433) by moving the piston (452).

2. The automatic gas pressure regulating valve airtightness detection device according to claim 1, characterized in that, The sliding component 1 (3) includes a slide rail (31) fixedly installed on the upper side of the cabinet (1) and distributed in the front and back. The left and right sides of the slide rail (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 1 (32) is rotatably installed on the slide rail (31) through an ear seat 1. Two connecting blocks 1 (33) are threaded on the screw 1 (32). The front and rear sides of the positioning seat (41) are fixedly connected to the corresponding connecting blocks 1 (33) respectively.

3. The automatic gas pressure regulating valve airtightness detection device according to claim 1, characterized in that, The positioning channel (42) includes an active cavity (421) that is opened inside the positioning seat (41) and extends along its length. The upper side of the active cavity (421) is provided with a plurality of first through holes (422) that are evenly distributed along its length and are circular. The lower side of the active cavity (421) is provided with a second through hole (423) that extends along its length and is rectangular. The lower side of the active cavity (421) is also provided with a plurality of third through holes (424) that are evenly distributed along its length and are circular. The first through holes (422) and the third through holes (424) have the same diameter and are staggered to the left and right. The sealing positioning component (43) corresponds to the first through hole (422) one by one.

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

5. The automatic gas pressure regulating valve airtightness detection device according to claim 4, characterized in that, A sealing plate (435) is fixedly fitted on the side of the sealing tube (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) that are close to each other. The pressure detector (44) is fixedly installed inside the end of the sealing tube (432) away from the corresponding air supply seat (433).

6. The automatic gas pressure regulating valve airtightness detection device according to claim 4, characterized in that, The control component includes a second screw (453). A second motor is fixedly installed inside the end of the compensation pipe (451) away from the air supply seat (433) by a bracket. The second screw (453) is fixedly connected to the output shaft of the second motor. A sleeve (454) is threadedly connected to the end of the second screw (453) away from the second motor. The end of the sleeve (454) away from the second motor is fixedly connected to a piston (452). A guide rod is provided on the side of the piston (452) near the second motor. The guide rod is slidably connected to the bracket.

7. The automatic gas pressure regulating valve airtightness detection device according to claim 4, characterized in that, The auxiliary support assembly (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). The gear set (463) includes a gear one and a gear two that mesh with each other. The gear one is fixedly connected to the rotating shaft (461). The gear two is rotatably disposed in the second through hole (423) through a connecting shaft. Two symmetrical triangular toothed plates (464) are fixedly disposed on the side of the air supply seat (433) away from the corresponding sealing pipe (432). Multiple toothed blocks are fixedly disposed on the lower side of the horizontal section of the toothed plate (464) along its length direction. The lower side of the horizontal section of the toothed plate (464) meshes with the corresponding gear two through the multiple toothed blocks.

8. The automatic gas pressure regulating valve airtightness detection device according to claim 5, characterized in that, The second through hole (423) has multiple sliding holes extending along its length on its left and right inner walls. The sliding component (47) includes a 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 connecting block (471). The left and right sides of the positioning seat (41) are rotatably provided with a screw (472) through the ear seat. The screw (472) is threadedly connected to all the connecting blocks (471) on the same side.

9. The automatic gas pressure regulating valve airtightness detection device according to claim 1, characterized in that, 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). An air supply plate (53) with a hollow internal structure is fixedly connected to the telescopic end of the cylinder (52). A plurality of air supply pipes (54) communicating with the interior of the air supply plate (53) are fixedly provided on the lower side of the air supply plate (53). An air supply pipe (55) communicating with the interior of the air supply plate (53) is provided on the air supply plate (53).

10. An automatic method for detecting the airtightness of a gas pressure regulating valve, characterized in that, The automatic gas pressure regulating valve airtightness detection device as described in claim 1 is used to complete the following steps: S1. Loading: Place the gas pressure regulating valve to be tested into the positioning channel (42), and seal and fix both ends through the sealing positioning component (43); S2, Inflation: The positioning seat (41) of the gas regulating valve moves toward the inflation mechanism (5) via the sliding component (3). After the positioning seat (41) moves to the inflation mechanism (5), the corresponding gas regulating valve is inflated. S3, Detection and Data Upload: The sliding component (3) drives the positioning seat (41) of the gas regulating valve after it is filled to move toward the corresponding side of the cabinet (1), and during this process, the pressure detector (44) is used to detect and upload the data to the main controller (2) for analysis and processing. At the same time, the positioning seat (41) of the gas regulating valve without filling moves toward the filling mechanism (5). S4. Unloading and loading: After the test is completed, the gas regulating valve in the positioning seat (41) automatically discharges downwards and then loads the material. At the same time, the gas regulating valve on the positioning seat (41) of the corresponding inflation mechanism (5) receives inflation. S5. Cyclic detection: The gas regulating valve after being filled is moved to the corresponding side of the cabinet (1) by sliding component 1 (3), and the refilled gas regulating valve moves synchronously toward the filling mechanism (5). This process is repeated to perform continuous detection of batch gas regulating valves.

Images