Gas meter gas tightness detection device and working method thereof

Abstract

The invention discloses a gas meter airtightness detection device and a working method thereof.The gas meter airtightness detection device comprises a base and a detection mechanism, the detection mechanism is arranged outside the base, the detection mechanism comprises a gas box, the outer surface of the gas box is fixedly connected with the outer surface of the base, and two gas pipes are communicated with the interior of the gas box in a penetrating mode; one ends of the two gas pipes are used for being connected with the connecting end of a gas meter, a gas pump is arranged in the gas box, the output end of the gas pump communicates with one end of the gas pipe on one side, an electromagnetic valve is arranged outside the gas pipe on the other side, and a piezoresistive sensor and a thermistor are arranged in the gas pipe on the other side. Relates to the technical field of detection devices, and solves the problems that when an existing gas meter airtightness detection device is used, a detection result of a gas meter is relatively simple to obtain, and the gas meter needs to be disassembled, assembled, loaded and unloaded manually, so that the actual detection efficiency is relatively low, and the detection steps are tedious.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a gas meter air tightness detection device and a working method thereof. Background Art

[0002] When inspecting the gas meter, the existing detection device can only detect whether the gas is leaking, and the detection takes a long time. It cannot detect the severity of the leakage and the detection effect is poor. In the invention patent with application number CN202011544504.1, an intelligent hanging gas meter air tightness detection device is disclosed, including a box body, a sealing plate is sealingly and slidably connected to the box body, and a lifting mechanism for lifting the sealing plate is provided in the box body. The air tightness detection efficiency of the gas meter is high and the detection effect is good.

[0003] Although the device has the above advantages, it still has the following defects in actual use: First, although the gas meter's sealing performance can be detected by entering the gas meter with compressed air during detection, the specific sealing performance of the gas meter cannot be obtained, and the specific condition inside the gas meter cannot be determined, resulting in the actual detection results being relatively simple; secondly, the gas meter needs to be manually loaded and unloaded, as well as the gas meter needs to be manually loaded and unloaded during detection, resulting in low actual detection efficiency and complicated steps; therefore, it is necessary to provide a gas meter airtightness detection device to address the deficiencies in the prior art. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a gas meter air tightness detection device and a working method thereof, which solves the problem that when the existing gas meter air tightness detection device is used, it is relatively simple to obtain the detection result of the gas meter, and the gas meter needs to be manually disassembled and assembled and loaded and unloaded, resulting in low actual detection efficiency and cumbersome detection steps.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a gas meter air tightness detection device, comprising a base, A detection mechanism, wherein the detection mechanism is arranged outside the base, and the detection mechanism comprises an air box, the outer surface of the air box is fixedly connected to the outer surface of the base, the interior of the air box is penetrated and connected with two air pipes, one end of the two air pipes is used to connect to the connection end of the gas meter, an air pump is arranged inside the air box, the output end of the air pump is connected to one end of the air pipe on one side, an electromagnetic valve is arranged outside the air pipe on the other side, and a piezoresistive sensor and a thermistor are arranged inside the air pipe on the other side respectively; A connecting assembly, which is arranged at one end of the gas pipe and realizes the connection between the gas pipe and the gas meter connection end by rotating and lifting the thread; The material transport component is arranged outside the base, and realizes loading and unloading of the gas meter by intermittent rotation, so as to realize continuous detection of the gas meter.

[0006] Preferably, a partition is fixedly connected to the interior of the air box, the outer surface of the partition is fixedly connected to the outer surface of the air pump, a one-way valve is passed through one side of the interior of the air box, a filter is passed through and fixedly connected to the body of the air box, the filter holes of the filter are connected to the other side of the interior of the air box, and a camera is fixedly connected to the outside of the air box.

[0007] Preferably, the connecting assembly includes a conical seat, the body of the conical seat is fixedly connected to one end of the trachea, the outer surface of the conical seat is movably connected with a conical sleeve, one end of the conical sleeve is fixedly connected with a screw, the outer surface of the screw is rotatably connected with a connecting plate, the outer surface of the connecting plate is fixedly connected with a lifting rod, and the outer surface of the lifting rod is fixedly connected to the outer surface of the trachea.

[0008] Preferably, the outer surface of the spiral tube is fixedly connected to a gear ring, the outer surface of the gear ring is meshed with a driving gear, the outer surface of the driving gear is fixedly connected to a reciprocating motor, and the outer surface of the reciprocating motor is fixedly connected to the outer surface of the connecting plate.

[0009] Preferably, the material transport assembly includes a rotating plate, the outer surface of the rotating plate is provided with a material trough, the interior of the material trough is movably connected to two clamps, the outer surface of the clamp is fixedly connected to a push-pull rod, the outer surface of the push-pull rod is embedded and fixedly connected to the interior of the material trough, the outer surface of the rotating plate is fixedly connected to an intermittent motor, and the outer surface of the intermittent motor is fixedly connected to the outer surface of the base.

[0010] Preferably, an abutment unit is provided on the outside of the splint, and the abutment unit includes a abutment plate, and two groups of support plates are provided on the outside of the abutment plate, and the outer surfaces of the two groups of support plates are fixedly connected to the outer surfaces of the splint and the abutment plate respectively, and a rotating rod is fixedly connected through the body of one group of support plates, and the outer surface of the rotating rod is rotatably connected through the body of the other group of support plates.

[0011] Preferably, one end of the rotating rod is fixedly connected to a rotating gear, the outer surface of the rotating gear is meshed with a rack, the outer surface of the rack is fixedly connected to an adjusting rod, and the outer surface of the adjusting rod is fixedly connected to the outer surface of the splint.

[0012] Preferably, a feeding unit is provided on the outside of the rotating plate, and the feeding unit includes a belt conveyor, the outer surface of the belt conveyor is fixedly connected to the outer surface of the base, the outer surface of the belt conveyor is fixedly connected to the base, the outer surface of the base is slidably connected to a push plate, the outer surface of the base is fixedly connected to a telescopic rod, the output end of the telescopic rod is slidably connected to the body of the base, the output end of the telescopic rod is fixedly connected to the outer surface of the push plate, and two clamping strips are provided on the outside of the push plate.

[0013] Preferably, the outer surface of the push plate is fixedly connected to an adjusting motor, the output end of the adjusting motor is fixedly connected to a screw rod through a coupling, the outer surface of the screw rod is threadedly connected to two slides, the outer surfaces of the two slides are fixedly connected to a rotating cylinder, and the output end of the rotating cylinder is fixedly connected to one end of the clamping strip.

[0014] The present invention also discloses a working method of a gas meter air tightness detection device, which specifically comprises the following steps: Step 1: Place the gas meter to be tested on the belt conveyor for feeding. When it moves to the position corresponding to the position between the two clamping strips, the rotating cylinder drives the clamping strips to rotate to be located on both sides of the gas meter. The adjusting motor drives the clamping strips to approach each other through the screw rod and the slide plate to clamp the gas meter. Then the output end of the telescopic rod extends out to send the gas meter into the material trough through the push plate and the clamping strips. Step 2: After the gas meter enters the trough, the output end of the adjusting rod extends out, and by meshing the rotating gear and the rack, the rotating rod drives the abutment plate to rotate and be perpendicular to the clamping plate to support the bottom of the gas meter. Then the output end of the push-pull rod extends out to drive the two clamping plates to approach each other to clamp the gas meter. Then the intermittent motor transfers the gas meter to the side of the gas box through the rotating plate. Step 3: After the gas meter moves to the side of the gas box, the lifting rod drives the screw tube to descend through the connecting plate and is sleeved on the outside of the connecting end of the gas meter. Then the reciprocating motor drives the screw tube to rotate through the engagement of the driving gear and the gear ring. The connecting end of the gas meter is connected to the air pipe through the screw tube through a threaded connection. Then the air pump pumps the outside air into the gas meter through one side of the air pipe and discharges it through the other side of the air pipe. When exhausting, the sealing of the gas meter is detected through the solenoid valve, thermistor and piezoresistive sensor. Beneficial Effects

[0015] The present invention provides a gas meter air tightness detection device and a working method thereof. Compared with the prior art, the present invention has the following beneficial effects: (1) By setting up a detection mechanism and utilizing the functions of an air pump and an air pipe, the outside air can flow inside the gas meter. The digital roller of the gas meter can be photographed by a camera, and the temperature of the thermistor and the numerical comparison of the corresponding air flow in each group can be used to determine the specific sealing of the gas meter and whether the digital roller is normal, thereby improving the accuracy and diversity of the detection results and making it easier to understand the specific situation of the gas meter and make corresponding treatments.

[0016] (2) By setting up a connection component and utilizing the extension and retraction of the output end of the lifting rod, the connecting plate drives the screw tube to descend and fit with the connection end of the gas meter, and the reciprocating motor drives the screw tube to rotate, so that the screw tube can be automatically screwed for threaded connection, and the connection between the cone seat and the cone sleeve is improved to improve the stability and sealing of the connection.

[0017] (3) By setting up a material transport component, using multiple material troughs and multiple groups of clamps set at equal angles, through the clamping of the clamps and the intermittent rotation of the intermittent motor, the gas meter can be automatically loaded and unloaded, and the continuous detection of the gas meter can be achieved.

[0018] (4) By setting up the abutment unit and utilizing the meshing of the rack and the rotating gear, the rotating rod can drive the abutment plate to rotate, and by vertically setting the abutment plate and the clamping plate, the gas meter can be supported. At the same time, when the abutment plate and the clamping plate are parallel, the gas meter can be automatically unloaded by falling.

[0019] (5) By setting up a feeding unit, a belt conveyor is used to feed the gas meter, and the movement of two clamping bars is used to clamp and feed the gas meter. The gas meter can be placed in the material trough for transportation, thereby realizing automatic loading of the gas meter to improve the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the external structure of the present invention; Figure 2 A three-dimensional diagram of the external structure of the trachea of ​​the present invention; Figure 3 The figure is a three-dimensional diagram of the external structure of the spiral tube of the present invention; Figure 4 It is a three-dimensional diagram of the external structure of the splint of the present invention; Figure 5 A three-dimensional diagram of the external structure of the abutment plate of the present invention; Figure 6 It is a three-dimensional diagram of the external structure of the base of the present invention.

[0021] In the figure: 1, base; 2, air box; 3, air pipe; 4, connecting assembly; 41, cone seat; 42, cone sleeve; 43, screw tube; 44, connecting plate; 45, lifting rod; 46, gear ring; 47, driving gear; 48, reciprocating motor; 5, material transport assembly; 51, rotating plate; 52, feeding unit; 521, belt conveyor; 522, base; 523, push plate; 524, telescopic rod; 525, clamping strip; 526, adjusting motor; 527, Screw rod; 528, slide plate; 529, rotary cylinder; 53, material trough; 54, splint; 55, abutment unit; 551, abutment plate; 552, support plate; 553, rotating rod; 554, rotating gear; 555, rack; 556, adjustment rod; 56, push-pull rod; 57, intermittent motor; 6, air pump; 7, solenoid valve; 8, piezoresistive sensor; 9, thermistor; 10, partition; 11, one-way valve; 12, filter; 13, camera. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-6 The present invention provides a gas meter air tightness detection device: Embodiment 1: It includes a base 1, and a detection mechanism is arranged on the outside of the base 1. The detection mechanism includes an air box 2. The outer surface of the air box 2 is fixedly connected to the outer surface of the base 1. Two air pipes 3 are connected to the inside of the air box 2. One end of the two air pipes 3 is used to connect to the connection end of the gas meter. An air pump 6 is arranged inside the air box 2. The model of the air pump 6 is PCF5015N, and it is electrically connected to the external control circuit. The output end of the air pump 6 is connected to one end of the air pipe 3 on one side. An electromagnetic valve 7 is arranged on the outside of the air pipe 3 on the other side. The electromagnetic valve 7 is electrically connected to the external control circuit and can control the air circulation inside the corresponding air pipe 3. A piezoresistive sensor 8 and a thermistor 9 are respectively arranged inside the air pipe 3 on the other side. The model of the piezoresistive sensor 8 is MS5534C, and it is electrically connected to the external control circuit with the thermistor 9. The use principle of the thermistor 9 is: when air flows, it will affect the temperature of the thermistor 9. The resistance of the thermistor 9 itself changes, so that the air flow is monitored through the current value of the thermistor 9 circuit. A partition 10 is fixedly connected to the inside of the air box 2. The partition 10 can divide the inside of the air box 2 into two parts to facilitate the flow of air in and out. The outer surface of the partition 10 is fixedly connected to the outer surface of the air pump 6. A one-way valve 11 is penetrated and connected on one side of the inside of the air box 2. The one-way valve 11 can ensure the one-way outflow of air to avoid the influence of the outer diameter air on the air pressure detection. A filter 12 is fixedly connected to the body of the air box 2. The filter 12 can filter impurities in the outside air to avoid pollution and damage to the gas meter. The filter holes of the filter 12 are connected to the other side of the inside of the air box 2. A camera 13 is fixedly connected to the outside of the air box 2. The camera 13 is electrically connected to the control circuit, and can image the real-time digital corresponding to the roller of the gas meter and transmit it to the control circuit to facilitate the detection of its accuracy.

[0024] In this embodiment, when one end of the two air pipes 3 is respectively connected to the connection end of the gas meter, the air pump 6 pumps the outside air in a quantitative and constant pressure manner. The outside air enters one side of the interior of the air box 2 through the filtration of the filter 12, and enters the interior of the gas meter through the air pump 6 and one side of the air pipe 3, and enters the other side of the interior of the air box 2 through the other side of the air pipe 3, and then is discharged through the one-way valve 11. In this process, the air is compressed inside the gas meter by closing the solenoid valve 7, and then it is detected whether the gas meter is leaking and the degree of leakage is determined by the leakage value according to the monitoring data of the piezoresistive sensor 8. If there is no leakage, the solenoid valve 7 is opened to allow the air to circulate externally, and the air flow is monitored by the current value of the thermistor 9 circuit, and the gas meter roller numbers are imaged by the camera 13, and the accuracy of the gas meter is detected by comparing the two numbers.

[0025] Embodiment 2: A connecting assembly 4 is provided at one end of the gas pipe 3, and the connecting assembly 4 includes a cone seat 41. The cone seat 41 is made of carbon fiber composite material or high-strength plastic. The body of the cone seat 41 is fixedly connected to one end of the gas pipe 3 through a cone sleeve 42, which is movably connected to the outer surface of the cone seat 41. The cone sleeve 42 is made of the same material as the cone seat 41 to improve the stability of the two when they are fitted together. A screw 43 is fixedly connected to one end of the cone sleeve 42. The inner wall of the screw 43 is provided with an internal thread so as to be threadedly connected to the connection end of the gas meter. A connecting plate 44 is rotatably connected to the outer surface of the screw 43, and the connecting plate 44 can be connected to the screw through a bearing. 43 is connected to facilitate axial movement and radial rotation of the screw tube 43. The outer surface of the connecting plate 44 is fixedly connected with a lifting rod 45. The lifting rod 45 is made of an existing electric push rod and is electrically connected to an external control circuit. The outer surface of the lifting rod 45 is fixedly connected to the outer surface of the air pipe 3. The outer surface of the screw tube 43 is fixedly connected with a gear ring 46. The outer surface of the gear ring 46 is meshed with a driving gear 47. The outer surface of the driving gear 47 is fixedly connected with a reciprocating motor 48. The reciprocating motor 48 is made of a servo motor and is electrically connected to the external control circuit. The outer surface of the reciprocating motor 48 is fixedly connected to the outer surface of the connecting plate 44.

[0026] In this embodiment, when it is necessary to connect the air pipe 3 and the gas meter, the output end of the lifting rod 45 is extended, and the screw tube 43 is driven to descend through the connecting plate 44 and is sleeved on the outside of one side of the gas meter connection end. Then the reciprocating motor 48 rotates and drives the screw tube 43 to rotate through the engagement of the gear ring 46 and the driving gear 47. The internal thread of the screw tube 43 and the external thread of the gas meter connection end are connected, so that the screw tube 43 is continuously descended to enhance the stability and sealing of the connection with the connection end. At the same time, the output end of the lifting rod 45 is synchronously extended, and the cone sleeve 42 is continuously pressed against the cone seat 41 as it descends, so as to improve the sealing of the connection between the screw tube 43 and the air pipe 3.

[0027] Embodiment 3: A material transport component 5 is provided on the outside of the gas pipe 3, and the material transport component 5 includes a rotating plate 51. A material trough 53 is provided on the outer surface of the rotating plate 51. A plurality of material troughs 53 are provided at equal angles on the edge of the rotating plate 51. Two clamps 54 are movably connected inside the material trough 53. The length of the clamp 54 is less than the height of the gas meter, so that the upper part of the gas meter is exposed to the outside of the clamp 54 to facilitate loading and unloading. A push-pull rod 56 is fixedly connected to the outer surface of the clamp 54. The push-pull rod 56 is made of an existing electric push rod and is electrically connected to an external control circuit. The outer surface of the push-pull rod 56 is embedded and fixedly connected to the inside of the material trough 53. An intermittent motor 57 is fixedly connected to the outer surface of the rotating plate 51. The intermittent motor 57 is electrically connected to the external control circuit, and the outer surface of the intermittent motor 57 is fixedly connected to the outer surface of the base 1.

[0028] In this embodiment, when the gas meter to be tested is placed inside the material trough 53 and is between the two clamps 54, the output end of the push-pull rod 56 extends so that the two clamps 54 are close to each other to clamp the gas meter. Then the intermittent motor 57 drives the rotating plate 51 to rotate at the angle between the two adjacent material troughs 53. Through intermittent rotation, the gas meter is intermittently transferred to the outside of the gas box 2 to achieve continuous detection of the gas meter.

[0029] Embodiment 4: The outside of the clamping plate 54 is provided with an abutting unit 55, and the abutting unit 55 includes an abutting plate 551. The abutting plate 551 is rotated to be parallel or perpendicular to the clamping plate 54, which can facilitate the unloading of the gas meter and support the bottom of the gas meter. Two groups of supporting plates 552 are provided on the outside of the abutting plate 551. The outer surfaces of the two groups of supporting plates 552 are fixedly connected to the outer surfaces of the clamping plate 54 and the abutting plate 551, respectively. A rotating rod 553 is fixedly connected to the body of one group of supporting plates 552, and is fixed to the rotating rod 553. A group of connected support plates 552 is fixedly connected to the abutment plate 551 at the same time, the outer surface of the rotating rod 553 is rotatably connected to the body of the other group of support plates 552, one end of the rotating rod 553 is fixedly connected to a rotating gear 554, the outer surface of the rotating gear 554 is meshed with a rack 555, the outer surface of the rack 555 is fixedly connected to an adjusting rod 556, the adjusting rod 556 is made of an existing electric push rod and is electrically connected to an external control circuit, and the outer surface of the adjusting rod 556 is fixedly connected to the outer surface of the splint 54.

[0030] In this embodiment, when the gas meter needs to be transported, the output end of the adjusting rod 556 extends out to drive the rack 555 to slide, and through the meshing of the rack 555 and the rotating gear 554, the rotating rod 553 drives the abutment plate 551 to rotate through one group of support plates 552, and makes the abutment plate 551 perpendicular to the clamping plate 54. When the gas meter is placed in the material trough 53, the abutment plate 551 supports the bottom of the gas meter to facilitate the clamping of the clamping plates 54 to approach each other. When the gas meter needs to be unloaded after inspection, the output end of the adjusting rod 556 retracts to drive the rack 555 to reset, so that the abutment plate 551 is reversed and reset and is longitudinally parallel to the clamping plate 54. The automatic unloading of the gas meter is completed by resetting the clamping plate 54.

[0031] Embodiment 5: A feeding unit 52 is arranged outside the rotating plate 51, and the feeding unit 52 includes a belt conveyor 521. The driving machine of the belt conveyor 521 is electrically connected to the external control circuit. As a preferred embodiment, three belt conveyors 521 are arranged, and the top of one of them is flush with the top of the abutment plate 551 when it is perpendicular to the clamping plate 54, which is used for conveying and transferring the gas meter to be tested. The bottoms of the other two are flush with the bottom of the abutment plate 551 when it is parallel to the clamping plate 54, which is convenient for unloading and conveying the gas meter. At the same time, the gas meters that have passed and failed the test can be transported respectively. The outer surface of the belt conveyor 521 is fixedly connected to the outer surface of the base 1. The outer surface of the belt conveyor 521 is fixedly connected to the base 522. The base 522 plays a connecting and supporting role. The outer surface of the base 522 is slidably connected to the push plate 523. The outer surface of the base 522 is fixedly connected to the telescopic rod 524. The telescopic rod 524 is made of an existing electric push rod and is electrically connected to the external control circuit. The output end of the telescopic rod 524 is connected to the base. The body of the seat 522 is connected through the sliding connection, the output end of the telescopic rod 524 is fixedly connected to the outer surface of the push plate 523, and two clamping strips 525 are arranged on the outside of the push plate 523. When the two clamping strips 525 clamp the gas meter, the bottom position of the two clamping strips 525 is higher than the top of the clamping plate 54, so as to facilitate the loading of the gas meter during transportation. The outer surface of the push plate 523 is fixedly connected with an adjusting motor 526, which is made of a servo motor and is electrically connected to the external control circuit. The output end of the adjusting motor 526 is fixedly connected to the outer surface of the push plate 523 through a coupling. A screw rod 527 is fixedly connected, and the threads on both sides of the surface of the screw rod 527 are arranged in opposite directions to control the two clamping strips 525 to move closer to or farther away from each other. The outer surface of the screw rod 527 is threaded with two slides 528, and the outer surfaces of the two slides 528 are fixedly connected with a rotating cylinder 529. The rotating cylinder 529 is connected to an external control circuit. By controlling the rotation of the clamping strip 525, the transportation and clamping of the gas meter are facilitated. The output end of the rotating cylinder 529 is fixedly connected to one end of the clamping strip 525.

[0032] In this embodiment, the gas meter to be tested is placed on the belt conveyor 521 for transportation. When the gas meter moves to a position aligned with the two clamping strips 525, the rotating cylinder 529 rotates so that the clamping strips 525 rotate to the outside of the gas meter. Then the adjusting motor 526 drives the screw rod 527 to rotate, so that the two slides 528 drive the clamping strips 525 to approach each other to secure the gas meter. Then the output end of the telescopic rod 524 extends to drive the push plate 523 to slide, so that the clamping strip 525 drives the gas meter to follow the movement, thereby placing the gas meter inside the material trough 53 to realize automatic loading of the gas meter.

[0033] The present invention also discloses a working method of a gas meter air tightness detection device, which specifically comprises the following steps: Step 1: Place the gas meter to be tested on the belt conveyor 521 for feeding. When it moves to the position corresponding to the position between the two clamping strips 525, the rotating cylinder 529 drives the clamping strips 525 to rotate to be located on both sides of the gas meter. The adjusting motor 526 drives the clamping strips 525 to approach each other through the screw rod 527 and the slide plate 528 to clamp the gas meter. Then, the output end of the telescopic rod 524 extends out through the push plate 523 and the clamping strip 525 to send the gas meter into the material trough 53; Step 2: After the gas meter enters the trough 53, the output end of the adjusting rod 556 extends out, and by meshing the rotating gear 554 and the rack 555, the rotating rod 553 drives the abutment plate 551 to rotate and be perpendicular to the clamping plate 54 to support the bottom of the gas meter. Then the output end of the push-pull rod 56 extends out to drive the two clamping plates 54 to approach each other to clamp the gas meter. Then the intermittent motor 57 transfers the gas meter to the side of the gas box 2 through the rotating plate 51; Step three: After the gas meter moves to the side of the gas box 2, the lifting rod 45 drives the screw tube 43 to descend through the connecting plate 44 and is sleeved on the outside of the connecting end of the gas meter. Then the reciprocating motor 48 drives the screw tube 43 to rotate through the engagement of the driving gear 47 and the gear ring 46. The connecting end of the gas meter is connected to the air pipe 3 through the screw tube 43 through a threaded connection. Then the air pump 6 pumps the outside air into the gas meter through the air pipe 3 on one side, and discharges it through the air pipe 3 on the other side. When exhausting, the sealing of the gas meter is detected through the solenoid valve 7, thermistor 9 and the piezoresistive sensor 8.

[0034] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas meter air tightness detection device, comprising a base (1), characterized in that: A detection mechanism, the detection mechanism being arranged outside the base (1), the detection mechanism comprising an air box (2), the outer surface of the air box (2) being fixedly connected to the outer surface of the base (1), the interior of the air box (2) being connected to two air pipes (3), one end of the two air pipes (3) being used to connect to the connection end of a gas meter, an air pump (6) being arranged inside the air box (2), the output end of the air pump (6) being connected to one end of the air pipe (3) on one side, an electromagnetic valve (7) being arranged outside the air pipe (3) on the other side, and a piezoresistive sensor (8) and a thermistor (9) being arranged inside the air pipe (3) on the other side; A connecting component (4), the connecting component (4) being arranged at one end of the gas pipe (3) and enabling the gas pipe (3) and the gas meter connection end to be connected by means of threaded rotation and lifting; A material transport component (5) is arranged outside the base (1) and realizes loading and unloading of the gas meter by intermittent rotation, so as to realize continuous detection of the gas meter.

2. A gas meter air tightness detection device according to claim 1, characterized in that: A partition (10) is fixedly connected to the interior of the air box (2), the outer surface of the partition (10) is fixedly connected to the outer surface of the air pump (6), a one-way valve (11) is passed through and communicated with one side of the interior of the air box (2), a filter screen (12) is passed through and fixedly connected to the body of the air box (2), the filter holes of the filter screen (12) are connected to the other side of the interior of the air box (2), and a camera (13) is fixedly connected to the outside of the air box (2).

3. A gas meter air tightness detection device according to claim 2, characterized in that: The connecting assembly (4) comprises a conical seat (41), the body of the conical seat (41) is fixedly connected to one end of the air pipe (3), the outer surface of the conical seat (41) is movably connected to a conical sleeve (42), one end of the conical sleeve (42) is fixedly connected to a screw tube (43), the outer surface of the screw tube (43) is rotatably connected to a connecting plate (44), the outer surface of the connecting plate (44) is fixedly connected to a lifting rod (45), and the outer surface of the lifting rod (45) is fixedly connected to the outer surface of the air pipe (3).

4. A gas meter air tightness detection device according to claim 3, characterized in that: The outer surface of the solenoid (43) is fixedly connected to a gear ring (46), the outer surface of the gear ring (46) is meshed with a driving gear (47), the outer surface of the driving gear (47) is fixedly connected to a reciprocating motor (48), and the outer surface of the reciprocating motor (48) is fixedly connected to the outer surface of the connecting plate (44).

5. A gas meter air tightness detection device according to claim 4, characterized in that: The material transport assembly (5) comprises a rotating plate (51), the outer surface of the rotating plate (51) is provided with a material trough (53), the interior of the material trough (53) is movably connected to two clamping plates (54), the outer surface of the clamping plate (54) is fixedly connected to a push-pull rod (56), the outer surface of the push-pull rod (56) is embedded and fixedly connected to the interior of the material trough (53), the outer surface of the rotating plate (51) is fixedly connected to an intermittent motor (57), and the outer surface of the intermittent motor (57) is fixedly connected to the outer surface of the base (1).

6. A gas meter air tightness detection device according to claim 5, characterized in that: An abutment unit (55) is arranged outside the clamping plate (54), and the abutment unit (55) comprises an abutment plate (551). Two groups of support plates (552) are arranged outside the abutment plate (551), and the outer surfaces of the two groups of support plates (552) are respectively fixedly connected to the outer surfaces of the clamping plate (54) and the abutment plate (551), and a rotating rod (553) is fixedly connected to the body of one group of support plates (552), and the outer surface of the rotating rod (553) is rotatably connected to the body of the other group of support plates (552).

7. A gas meter air tightness detection device according to claim 6, characterized in that: One end of the rotating rod (553) is fixedly connected to a rotating gear (554), the outer surface of the rotating gear (554) is meshed with a rack (555), the outer surface of the rack (555) is fixedly connected to an adjusting rod (556), and the outer surface of the adjusting rod (556) is fixedly connected to the outer surface of the clamping plate (54).

8. A gas meter air tightness detection device according to claim 7, characterized in that: A feeding unit (52) is arranged outside the rotating plate (51), and the feeding unit (52) comprises a belt conveyor (521), the outer surface of the belt conveyor (521) is fixedly connected to the outer surface of the base (1), the outer surface of the belt conveyor (521) is fixedly connected to a base (522), the outer surface of the base (522) is slidably connected to a push plate (523), the outer surface of the base (522) is fixedly connected to a telescopic rod (524), the output end of the telescopic rod (524) is slidably connected to the body of the base (522), the output end of the telescopic rod (524) is fixedly connected to the outer surface of the push plate (523), and two clamping strips (525) are arranged outside the push plate (523).

9. A gas meter air tightness detection device according to claim 8, characterized in that: The outer surface of the push plate (523) is fixedly connected to an adjusting motor (526); the output end of the adjusting motor (526) is fixedly connected to a lead screw (527) via a coupling; the outer surface of the lead screw (527) is threadedly connected to two slide plates (528); the outer surfaces of the two slide plates (528) are fixedly connected to a rotating cylinder (529); the output end of the rotating cylinder (529) is fixedly connected to one end of the clamping strip (525).

10. A working method of a gas meter air tightness detection device, using the gas meter air tightness detection device according to claim 9, characterized in that: The specific steps include: Step 1: Place the gas meter to be tested on the belt conveyor (521) for feeding. When the gas meter moves to a position corresponding to between the two clamping strips (525), the rotating cylinder (529) drives the clamping strips (525) to rotate so as to be located on both sides of the gas meter. The adjusting motor (526) drives the clamping strips (525) to move closer to each other through the screw rod (527) and the slide plate (528) to clamp the gas meter. Then, the output end of the telescopic rod (524) extends through the push plate (523) and the clamping strip (525) to feed the gas meter into the material trough (53). Step 2: After the gas meter enters the trough (53), the output end of the adjusting rod (556) extends out, and by meshing the rotating gear (554) and the rack (555), the rotating rod (553) drives the abutment plate (551) to rotate and be perpendicular to the clamping plate (54) to support the bottom of the gas meter. Then, the output end of the push-pull rod (56) extends out to drive the two clamping plates (54) to move closer to each other to clamp the gas meter. Then, the intermittent motor (57) transfers the gas meter to the side of the gas box (2) through the rotating plate (51); Step 3: After the gas meter moves to the side of the gas box (2), the lifting rod (45) drives the screw tube (43) to descend through the connecting plate (44) and is sleeved on the outside of the connecting end of the gas meter. Then, the reciprocating motor (48) drives the screw tube (43) to rotate through the meshing of the driving gear (47) and the gear ring (46). The connecting end of the gas meter is connected to the air pipe (3) through the screw tube (43) through a threaded connection. Then, the air pump (6) pumps the outside air into the gas meter through one side of the air pipe (3) and discharges it through the other side of the air pipe (3). When exhausting, the sealing of the gas meter is detected through the solenoid valve (7), the thermistor (9) and the piezoresistive sensor (8).

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