Ultrasonic gas meter water tightness detection equipment

Abstract

The invention relates to the field of gas meter shell detection, in particular to ultrasonic gas meter water tightness detection equipment which comprises a box body, a detection device used for detecting the water tightness of a gas meter shell is installed on the box body, and the detection device comprises an immersion mechanism, a gas circulation mechanism and a cleaning mechanism. The gas circulation mechanism is used for positioning a gas meter shell and inflating the gas meter shell, the immersion mechanism is installed on the box body and located below the gas circulation mechanism, the immersion mechanism is used for immersing the gas meter shell positioned in the gas circulation mechanism in water, the cleaning mechanism comprises a cleaning brush and a driving assembly, the driving assembly is installed on the immersion mechanism, and the cleaning brush is installed on the box body. The cleaning brush is installed on the driving assembly and used for removing bubbles on the gas meter shell immersed in water, the problem that bubbles on the surface of the gas meter shell are inconvenient to clean in a traditional mode is solved, and the effect of conveniently cleaning the bubbles on the surface of the gas meter shell can be achieved.

Description

Technical Field

[0001] The present application relates to the field of gas meter casing detection, and in particular to an ultrasonic gas meter water tightness detection device. Background Art

[0002] Ultrasonic gas meter is an instrument that uses ultrasonic technology to measure gas flow and is mainly used for gas metering and billing.

[0003] The case of an ultrasonic gas meter is usually composed of an upper and lower shell. The upper shell is usually provided with two interfaces, which are used to connect to the gas pipe. In order to maintain the safety of gas use, the water tightness of the gas meter needs to be guaranteed. Therefore, the water tightness of the gas meter case needs to be tested after it is produced.

[0004] At present, the water tightness of a gas meter case is usually tested by immersing the gas meter case in water, and connecting the two interfaces on the upper end of the gas meter case to the air inlet pipe and the air outlet pipe of an external gas source respectively, and introducing air into the gas meter case through the external gas source. Whether bubbles appear at the joint between the upper and lower ends of the gas meter case is observed to determine the water tightness of the gas meter case.

[0005] However, when the gas meter is just immersed in water, bubbles are likely to appear in the water and adsorb on the gas meter case, thereby affecting the judgment of the water tightness of the gas meter case. Therefore, it is necessary to manually use a brush to sweep along the joints of the gas meter case in the water to remove the bubbles on the gas meter case, and then introduce air into the gas meter case to start the water tightness test of the gas meter case. However, it is usually inconvenient to manually clean the bubbles on the gas meter case. Summary of the invention

[0006] In order to facilitate cleaning of bubbles on a gas meter casing before performing a water tightness test on the gas meter casing, the present application provides an ultrasonic gas meter water tightness test device.

[0007] The present application provides an ultrasonic gas meter water tightness detection device, which adopts the following technical solution: An ultrasonic gas meter water tightness detection device comprises a box body, on which a detection device for detecting the water tightness of a gas meter case is installed, the detection device comprises an immersion mechanism, a gas circulation mechanism and a cleaning mechanism, the gas circulation mechanism comprises an inflation component and a supporting component, the supporting component is installed at the upper end of the box body, the inflation component is installed on the supporting component, the supporting component is used to position the gas meter case, the inflation component is used to inflate gas into the gas meter case, the immersion mechanism is installed on the box body and is located below the gas circulation mechanism, the immersion mechanism is used to immerse the gas meter case positioned on the supporting component in water, the cleaning mechanism comprises a cleaning brush and a driving component, the driving component is installed on the immersion mechanism, the cleaning brush is installed on the driving component, and the cleaning brush is used to remove bubbles on the gas meter case immersed in water.

[0008] By adopting the above technical solution, when the water tightness test of the gas meter case is carried out, the gas meter case is first installed on the supporting assembly, and then the gas meter case is immersed in water through the immersion mechanism, and then the cleaning brush is driven by the driving assembly to move along the surface of the gas meter case, so as to remove the bubbles on the surface of the gas meter case, and finally the gas meter case is inflated through the inflation assembly, and the water tightness of the gas meter case is judged by observing whether bubbles are generated on the surface of the gas meter case.

[0009] In a specific feasible implementation scheme, the driving assembly includes a driving motor, a driving chain and a driving sprocket. There are a plurality of driving sprockets, and the plurality of driving sprockets are rotatably mounted in an immersion mechanism, and the plurality of driving sprockets are arranged along the circumference of the gas meter casing. The driving motor is also mounted on the immersion mechanism, and the output shaft of the driving motor is connected to one of the driving sprockets. The driving chain is wound around the plurality of driving sprockets, and the cleaning brush is mounted on the driving chain.

[0010] By adopting the above technical solution, the driving motor drives the driving sprocket to rotate, so that the driving sprocket drives the driving chain to operate, and the driving chain drives the cleaning brush to move along the circumference of the gas meter case, thereby cleaning the bubbles on the surface of the gas meter case, thereby facilitating the detection of the water tightness of the gas meter case.

[0011] In a specific possible implementation scheme, the immersion mechanism includes an immersion box and a lifting assembly, the lifting assembly includes a lifting motor, a lifting screw and a lifting plate, the lifting screw is installed on the box body in a vertical direction, the lifting motor and the lifting plate are also installed on the box body, and the output shaft of the lifting motor is connected to one end of the lifting screw, the lifting plate is threadedly connected to the lifting screw, the immersion box is installed on the lifting plate, the immersion box is used to store water, and the immersion box is used to store gas meter casings.

[0012] By adopting the above technical solution, the lifting motor drives the lifting screw to rotate, thereby driving the lifting plate to move in the vertical direction, so that the lifting plate drives the immersion box to move in the vertical direction, thereby facilitating the immersion box to immerse the gas meter casing in water.

[0013] In a specific feasible implementation scheme, the supporting assembly includes a supporting rod, a pressure plate and a clamping cylinder, the clamping cylinder is mounted on a box body, and the piston rod of the clamping cylinder extends downward, the pressure plate is mounted on the piston rod of the clamping cylinder, the inflation assembly is mounted on the pressure plate, the supporting rod is L-shaped, the vertical section of the supporting rod is mounted on the side wall of the clamping cylinder, and one end of the vertical section of the supporting rod extends downward, the horizontal section of the supporting rod extends in the direction of the clamping cylinder, and the horizontal section of the supporting rod and the pressure plate are used to accommodate the gas meter casing.

[0014] By adopting the above technical solution, the gas meter case is placed on the horizontal section of the support rod, and the clamping cylinder drives the pressure plate to move downward, so that the pressure plate drives the inflation component to descend, and the inflation component is connected to the interface at the upper end of the gas meter case, so as to facilitate the inflation component to inflate the gas meter case, thereby realizing the water tightness detection of the gas meter case.

[0015] In a specific feasible implementation scheme, the inflation assembly includes an air inlet connector and an air outlet connector, the air inlet connector is installed at one end of the pressure plate, and the air outlet connector is installed at the other end of the pressure plate, and the air inlet connector and the air outlet connector are respectively connected to an external gas source through a pipe, and the air inlet connector and the air outlet connector are respectively used to be plugged into the interface on the gas meter casing.

[0016] By adopting the above technical solution, air is transported to the air inlet joint through an external air source, so that the air enters the gas meter case through the air inlet joint, and then discharges the gas meter case from the air outlet joint. This makes it easy to observe whether bubbles are generated at the joints of the gas meter case immersed in water during the air flow, thereby facilitating the detection of the water tightness of the gas meter case.

[0017] In a specific possible implementation scheme, the gas circulation mechanism further includes an air inlet sealing assembly and an air outlet sealing assembly, the air inlet sealing assembly is mounted on the air inlet joint, the air outlet sealing assembly is mounted on the air outlet joint, and the air inlet sealing assembly has the same structure as the air outlet sealing assembly, the air inlet sealing assembly and the air outlet sealing assembly both include a support member, a mounting plate is slidably mounted on the bottom wall of the pressure plate, and a buffer spring is mounted on the mounting plate, one end of the buffer spring is connected to the mounting plate, and the other end is connected to the pressure plate, the support member includes a mounting tube, a support An opening ball and a rubber nozzle, the mounting tube is sleeved on the air inlet joint, and the upper end of the mounting tube is connected to the mounting plate, and a gap is left between the mounting tube and the air inlet joint, the rubber nozzle is in an inverted cone shape, and the rubber nozzle is mounted on the lower end of the mounting tube, and a gap is also left between the rubber nozzle and the air inlet joint, the rubber nozzle is used to be plugged into the joint of the gas meter case, the opening ball is sleeved on the outer side wall of the lower end of the air inlet joint, the opening ball is located between the rubber nozzle and the air inlet joint, and the side wall of the opening ball is used to squeeze the inner wall of the rubber nozzle close to the air inlet joint.

[0018] By adopting the above technical scheme, when the clamping cylinder drives the pressure plate to descend, the pressure plate also drives the mounting plate to descend, so that the mounting plate drives the rubber nozzle at the lower end of the mounting tube to descend to the interface plugged into the upper end of the gas meter case. At the same time, the air inlet joint also descends with the pressure plate to the interface plugged into the gas meter case. When the rubber nozzle is plugged into the interface of the gas meter case, the descent of the mounting plate encounters resistance, thereby causing displacement relative to the pressure plate and compressing the buffer spring. At this time, the air inlet joint drives the expansion ball to continue to move downward, so that the expansion ball moves downward to abut against the inner wall of the rubber nozzle, so that the rubber nozzle is squeezed and deformed, so that the outer wall of the rubber nozzle fully abuts against the inner wall of the interface of the gas meter case, thereby facilitating the maintenance of the air tightness of the connection between the rubber nozzle and the gas meter case. At the same time, the expansion ball abuts against the inner wall of the rubber nozzle, thereby maintaining the sealing between the air inlet joint and the rubber nozzle, thereby facilitating the maintenance of the air tightness between the air inlet joint and the gas meter case when detecting the water tightness of the gas meter case.

[0019] In a specific feasible implementation scheme, the air inlet sealing assembly and the air outlet sealing assembly both also include a positioning member, which includes a mounting rod, a push rod, a positioning spring and a clamping rod. The mounting rod is mounted on the side wall of the mounting tube, and the push rod is mounted on the mounting rod in a direction perpendicular to the axis of the mounting tube, and one end of the push rod passes through the side wall of the mounting tube and extends into the gap between the mounting tube and the air inlet joint, and the end of the push rod close to the air inlet joint is used to be connected to a support ball, the clamping rod is rotatably mounted on the end of the mounting rod away from the mounting tube, and one end of the clamping rod extends downward to the rubber mouth, and the lower end of the clamping rod is used to abut against the outer wall of the gas meter casing at the air inlet, the positioning spring is mounted on the push rod, and one end of the positioning spring abuts against the side wall of the clamping rod, and the other end is connected to the mounting rod.

[0020] By adopting the above technical solution, when the air inlet joint drives the expansion ball to drop to the inner wall of the rubber nozzle, the expansion ball drives the push rod to move, so that the push rod pushes the upper end of the clamp rod and compresses the positioning spring, so that the lower end of the clamp rod moves toward the interface of the gas meter case, so that the lower end of the clamp rod is in contact with the outer wall of the interface of the gas meter case, thereby positioning the outer wall of the interface of the gas meter case, thereby further reducing the shaking of the gas meter case, which affects the air tightness between the interface between the air inlet joint and the gas meter case.

[0021] In a specific feasible implementation scheme, a guide rod is installed on the top wall of the support ball, and the guide rod is sleeved on the outer wall of the air inlet joint. The guide rod extends upward along the axis of the air inlet joint, and a guide block is installed on the upper end of the guide rod. The end of the guide block close to the guide rod is provided with an interference slope, and the interference slope is used to interfere with the top rod.

[0022] By adopting the above technical solution, when the support ball descends, the guide block is driven downward by the guide rod, so that the contact slope at the lower end of the guide block contacts the end of the push rod, thereby pushing the push rod away from the mounting tube, thereby realizing the action of pushing the clamp rod to rotate.

[0023] In a specific feasible implementation scheme, the gas circulation mechanism also includes a clamping assembly, which includes a first clamp block, a second clamp block and a clamping spring. A support plate is also installed on the support rod, and the first clamp block and the second clamp block are both installed on the support plate. A space for placing a gas meter case is left between the first clamp block and the second clamp block, and one end of the first clamp block extends upward, and the other end extends obliquely toward the direction of the second clamp block, one end of the second clamp block extends upward, and the other end extends obliquely toward the direction of the first clamp block, a top plate is also installed on the support plate, and the top plate is located above one end of the first clamp block and the second clamp block close to the support plate, and the top plate is used to resist the lower ends of the first clamp block and the second clamp block, the clamping spring is installed on the top plate, and one end of the clamping spring is also connected to the support plate.

[0024] By adopting the above technical solution, when the gas meter case is placed on the support plate on the support rod, the bottom wall of the gas meter case contacts the top plate, so that the top plate presses down the lower ends of the first clamp block and the second clamp block and compresses the clamping spring, so that the upper ends of the first clamp block and the second clamp block clamp the side walls of the gas meter case, thereby facilitating the maintenance of the stability of the gas meter case on the support rod.

[0025] In a specific possible implementation manner, the gas circulation mechanism and the cleaning mechanism are provided in multiple groups.

[0026] By adopting the above technical solution and providing multiple sets of gas circulation mechanisms and cleaning mechanisms, it is convenient to detect the water tightness of multiple gas meter casings at one time, thereby facilitating improving the efficiency of gas meter casing detection.

[0027] In summary, the present application includes at least one of the following beneficial effects: 1. The present application provides a cleaning mechanism to facilitate the removal of bubbles on the surface of the gas meter case that has just been immersed in water, thereby facilitating the maintenance of the accuracy of the water tightness detection of the gas meter case.

[0028] 2. The present application provides an air inlet sealing assembly and an air outlet sealing assembly to facilitate maintaining the air tightness of the interface connection between the air inlet joint and the gas meter case through the air inlet sealing assembly, and to maintain the air tightness of the interface connection between the air outlet joint and the gas meter case through the air outlet sealing assembly, thereby facilitating maintaining the accuracy of the water tightness detection of the gas meter case. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the ultrasonic gas meter water tightness detection equipment of the present application.

[0030] Figure 2 It is a structural schematic diagram of the lifting assembly in the embodiment of the present application.

[0031] Figure 3 It is a schematic diagram of the structure of the gas circulation mechanism in the embodiment of the present application.

[0032] Figure 4 It is a schematic diagram of the structure of the air intake sealing assembly in the embodiment of the present application.

[0033] Figure 5 is an exploded view of the air intake sealing assembly in the embodiment of the present application.

[0034] Figure 6 It is a schematic diagram of the air intake sealing assembly and the gas meter housing maintaining a seal in the embodiment of the present application.

[0035] Figure 7 It is a schematic diagram of the structure of the clamping assembly in an embodiment of the present application.

[0036] Figure 8 It is a structural schematic diagram of the cleaning mechanism in the embodiment of the present application.

[0037] Description of reference numerals: 1. Box; 2. Gas circulation mechanism; 21. Support assembly; 211. Support rod; 212. Press plate; 213. Press cylinder; 22. Inflatable assembly; 221. Inlet joint; 222. Outlet joint; 23. Inlet seal assembly; 231. Mounting tube; 232. Open ball; 2321. Guide rod; 233. Rubber nozzle; 234. Mounting plate; 235. Buffer spring; 236. Guide block; 237. Mounting rod; 238. Ejector rod; 239. Positioning spring; 2310. Clamp rod; 24. Outlet seal Sealing assembly; 25, clamping assembly; 251, first clamping block; 252, second clamping block; 253, clamping spring; 254, support plate; 255, top plate; 3, immersion mechanism; 31, immersion box; 32, lifting assembly; 321, lifting motor; 322, lifting screw; 323, lifting plate; 4, cleaning mechanism; 41, cleaning brush; 42, driving assembly; 421, driving motor; 422, driving chain; 423, driving sprocket; 424, mounting block; 425, auxiliary sprocket; 5, gas meter case. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-8 This application is described in further detail.

[0039] The present application embodiment discloses an ultrasonic gas meter water tightness detection device, referring to Figure 1 , Figure 2 and Figure 8 , including a box body 1, on which is installed a detection device for detecting the water tightness of a gas meter case 5, the detection device including a gas circulation mechanism 2, an immersion mechanism 3 and a cleaning mechanism 4, the gas circulation mechanism 2 is installed at the upper end of the box body 1, the gas circulation mechanism 2 is used to inflate the gas meter case 5, the immersion mechanism 3 is installed on the box body 1 and is located below the gas circulation mechanism 2, the immersion mechanism 3 is used to immerse the gas meter case 5 in water, the cleaning mechanism 4 is installed on the box body 1, the cleaning mechanism 4 is used to remove bubbles on the surface of the gas meter case 5 immersed in water, and multiple groups of the gas circulation mechanism 2 and the cleaning mechanism 4 are provided.

[0040] Reference Figure 2 and Figure 3The gas circulation mechanism 2 includes a supporting assembly 21, an air charging assembly 22, an air inlet sealing assembly 23 and an air outlet sealing assembly 24. The supporting assembly 21 includes a supporting rod 211, a pressing plate 212 and a pressing cylinder 213. The pressing cylinder 213 is fixedly mounted at the upper end of the box body 1, and the piston rod of the pressing cylinder 213 extends downward, and the pressing plate 212 is fixedly mounted on the piston rod of the pressing cylinder 213. The supporting rod 211 is an L-shaped rod, and the vertical section of the supporting rod 211 is fixedly mounted on the side wall of the pressing cylinder 213 through a connecting rod. The horizontal section of the supporting rod 211 extends to the bottom of the pressing plate 212 in the direction of the pressing cylinder 213, and there is enough space between the horizontal section of the supporting rod 211 and the pressing plate 212 to accommodate the gas meter housing 5.

[0041] Reference Figure 3 and Figure 4 The inflation assembly 22 includes an air inlet connector 221 and an air outlet connector 222. The air inlet connector 221 is fixedly mounted on one end of the pressure plate 212 in the vertical direction, and one end of the air inlet connector 221 extends downward, and the other end is connected to an external gas source through a pipeline. The air inlet connector 221 is used to be plugged into an interface at the upper end of the gas meter housing 5. The air outlet connector 222 is also fixedly mounted on the other end of the pressure plate 212 in the vertical direction, and one end of the air outlet connector 222 also extends downward, and the other end is also connected to an external gas source through a pipeline. The lower end of the air outlet connector 222 is used to be plugged into another interface at the upper end of the gas meter housing 5. The air is transported from the air inlet connector 221 to the gas meter housing 5 through the external gas source, and then transported back to the external gas source from the air outlet connector 222. Such a method and the specific external gas source are both existing technologies in the art and will not be elaborated here.

[0042] Reference Figure 4 and Figure 5The structures of the air inlet sealing assembly 23 and the air outlet sealing assembly 24 are the same, and the air inlet sealing assembly 23 is installed on the air inlet joint 221, and the air outlet sealing assembly 24 is installed on the air outlet joint 222. Here, the air inlet sealing assembly 23 is taken as an example for explanation. The air inlet sealing assembly 23 includes a propping member and a positioning member. The propping member includes a mounting tube 231, a propping ball 232 and a rubber nozzle 233. A mounting plate 234 is slidably mounted on the bottom wall of the pressure plate 212, and the sliding path of the mounting plate 234 is the same as that of the air inlet sealing assembly 233. The axes of the piston rods of the compression cylinder 213 are the same, and a buffer spring 235 is installed on the side wall of the mounting plate 234 close to the pressing plate 212, one end of the buffer spring 235 is fixedly connected to the top wall of the mounting plate 234, and the other end is fixedly connected to the bottom wall of the pressing plate 212, the mounting tube 231 is fixedly installed on the bottom wall of the mounting plate 234, and the mounting tube 231 is sleeved on the air inlet joint 221, and a gap is left between the inner wall of the mounting tube 231 and the outer wall of the air inlet joint 221. The rubber nozzle 233 is in an inverted cone shape, and the upper end of the rubber nozzle 233 is fixedly installed on the lower end of the mounting tube 231, and the diameter of the upper end of the rubber nozzle 233 is larger than the inner diameter of the interface of the gas meter housing 5, the lower end of the rubber nozzle 233 extends downward, and the lower end of the rubber nozzle 233 is used to be plugged into the air inlet interface of the gas meter housing 5, and a gap is also left between the inner wall of the rubber nozzle 233 and the outer wall of the air inlet joint 221.

[0043] Reference Figure 4 and Figure 5 The expansion ball 232 is hemispherical, and the air inlet joint 221 passes through the top wall of the expansion ball 232, so that the expansion ball 232 is sleeved on the outer wall of the air inlet joint 221, and the expansion ball 232 is fixedly connected to the outer wall of the air inlet joint 221, and the arc surface of the expansion ball 232 faces the support rod 211, and the arc-shaped side wall of the expansion ball 232 contacts the inner wall of the rubber nozzle 233, and in the initial position, the expansion ball 232 is located at the rubber nozzle 233 at the lower end of the mounting tube 231. A guide rod 2321 is fixedly installed on the top wall of the support ball 232, and the guide rod 2321 is sleeved on the outer wall of the air inlet joint 221. The guide rod 2321 extends upward along the axial direction of the mounting tube 231, and a guide block 236 is fixedly installed on the side wall of the upper end of the guide rod 2321. The guide block 236 is located between the inner wall of the mounting tube 231 and the outer wall of the air inlet joint 221, and the lower end of the side wall of the guide block 236 close to the inner wall of the mounting tube 231 is provided with a resistance inclined surface.

[0044] Reference Figure 4 and Figure 5There are two groups of positioning members, which are symmetrically arranged on the side walls on both sides of the axis of the mounting tube 231. The positioning members include a mounting rod 237, a push rod 238, a positioning spring 239 and a clamping rod 2310. The mounting rod 237 is an L-shaped rod. One end of the horizontal section of the mounting rod 237 is fixedly mounted on the side wall of the mounting tube 231, and the axis of the horizontal section of the mounting rod 237 is perpendicular to the axis of the mounting tube 231. The push rod 238 is slidably mounted on the horizontal section of the mounting rod 237 along the axis direction of the horizontal section of the mounting rod 237, and one end of the push rod 238 passes through the side wall of the mounting tube 231 and extends to the bottom of the guide block 236, and the end of the push rod 238 located in the mounting tube 231 is used to resist the resistance inclined surface of the guide block 236. The clamp rod 2310 is rotatably mounted on the side wall of the vertical section of the mounting rod 237, and the rotating axis of the clamp rod 2310 is located in the horizontal direction and perpendicular to the axis of the vertical section of the mounting rod 237, and the rotating axis of the clamp rod 2310 is located below the axis of the top rod 238, and the side wall at the upper end of the clamp rod 2310 is slidingly connected to the end of the top rod 238 away from the mounting tube 231, and the side wall at the lower end of the clamp rod 2310 is used to resist the outer wall of the interface at the upper end of the gas meter housing 5. A thin rod is fixedly installed on one end of the push rod 238 away from the mounting tube 231. The thin rod is coaxial with the push rod 238, and the diameter of the thin rod is smaller than the diameter of the push rod 238. The thin rod passes through the side wall of the clamping rod 2310, and the thin rod is slidingly connected to the clamping rod 2310. The positioning spring 239 is installed on the thin rod, and one end of the positioning spring 239 is in contact with the side wall of the clamping rod 2310, and the other end is in contact with the side wall of the horizontal section of the mounting rod 237 away from the mounting tube 231.

[0045] Reference Figure 4 and Figure 6When the water tightness of the gas meter case 5 needs to be tested, the gas meter case 5 is placed on the horizontal section of the support rod 211, so that the two interfaces at the upper end of the gas meter case 5 are aligned with the air inlet joint 221 and the air outlet joint 222 on the pressing plate 212 respectively, and then the pressing cylinder 213 drives the pressing plate 212 to descend, so that the pressing plate 212 drives the air inlet joint 221 and the air outlet joint 222 to descend to the interface of the gas meter case 5, and drives the mounting plate 234 to descend to the gas meter case 5, The mounting tube 231 on the mounting plate 234 drives the rubber nozzle 233 to be inserted into the interface of the gas meter case 5, and then as the pressing cylinder 213 drives the pressing plate 212 to continue to descend to the end of the stroke of the pressing cylinder 213, the rubber nozzle 233 receives the resistance of the gas meter case 5, thereby driving the mounting plate 234 to compress the buffer spring 235, so that the pressing plate 212 and the mounting plate 234 are relatively displaced, so that the air inlet joint 221 on the pressing plate 212 drives the support ball 232 to move relative to the rubber The rubber nozzle 233 moves downward, so that the opening ball 232 moves downward along the inner wall of the rubber nozzle 233, so that the outer wall of the opening ball 232 hits the inner wall of the rubber nozzle 233, so that the opening ball 232 opens the rubber nozzle 233 located in the interface of the gas meter case 5, so that the outer wall of the rubber nozzle 233 located in the interface of the gas meter case 5 hits the inner wall of the interface of the gas meter case 5, thereby reducing the gap between the rubber nozzle 233 and the inner wall of the interface of the gas meter case 5, so as to maintain the rubber nozzle 233. The nozzle 233 is inserted into the airtightness of the interface of the gas meter case 5. At the same time, since the opening ball 232 contacts the inner wall of the rubber nozzle 233, the gap between the opening ball 232 and the inner wall of the rubber nozzle 233 is reduced, so that it is easy to maintain the airtightness between the rubber nozzle 233 and the opening ball 232, so that the air inlet joint 221 and the interface of the gas meter case 5 maintain good airtightness, thereby improving the accuracy of the watertightness detection of the gas meter case 5 when gas is introduced into the gas meter case 5.

[0046] Reference Figure 4 and Figure 6When the piston rod of the clamping cylinder 213 reaches the end of the stroke, the pressure plate 212 drives the opening ball 232 and the mounting tube 231 to produce relative displacement, so that the opening ball 232 drives the guide rod 2321 to move downward relative to the mounting tube 231, so that the guide rod 2321 drives the guide block 236 to descend to the push rod 238, so that the contact slope of the guide block 236 contacts the end of the push rod 238 and pushes the push rod 238 away from the mounting tube 231, so that the push rod 238 pushes the upper end of the clamp rod 2310, thereby the clamp rod 23 The lower end of the gas meter housing 5 is rotated toward the mounting tube 231, so that the lower end of the clamping rod 2310 is rotated to abut against the side wall of the interface of the gas meter housing 5, and the side wall of the interface of the gas meter housing 5 is clamped at the same time by two sets of symmetrically arranged clamping rods 2310, so as to realize the positioning of the upper end of the gas meter housing 5, so as to facilitate reducing the movement of the gas meter housing 5 under the resistance of water when the gas meter housing 5 is immersed, thereby causing the gas meter housing 5 to be misaligned with the rubber nozzle 233, thereby affecting the air tightness between the rubber nozzle 233 and the gas meter housing 5. Similarly, the other interface of the gas meter housing 5 is positioned by the gas outlet sealing assembly 24, and at the same time, the gas outlet sealing assembly 24 is used to maintain the air tightness of the connection between the gas outlet joint 222 and the other interface of the gas meter housing 5.

[0047] Reference Figure 4 and Figure 6 When the gas meter housing 5 is inspected, the pressing plate 212 is driven to move upward by the pressing cylinder 213, thereby driving the air inlet joint 221 to move upward, so that the air inlet joint 221 is gradually separated from the gas meter housing 5. At the same time, when the air inlet joint 221 moves upward, the air inlet joint 221 drives the opening ball 232 to move upward relative to the rubber nozzle 233, so that the opening ball 232 drives the guide block 236 to move upward through the guide rod 2321, so that the guide block 236 is separated from the push rod 238, so that the push rod 238 is separated from the push rod 238. Under the action of the positioning spring 239, the clamping plate 238 moves toward the mounting tube 231, thereby driving the upper end of the clamping rod 2310 to rotate toward the mounting tube 231, so that the lower end of the clamping rod 2310 rotates away from the rubber nozzle 233, so that the lower end of the clamping rod 2310 releases the side wall of the interface of the gas meter case 5. At this time, the mounting plate 234, under the action of the buffer spring 235 in a compressed state, keeps the rubber nozzle 233 plugged into an interface of the gas meter case 5 through the mounting tube 231. As the pressing plate 212 continues to rise, when the buffer spring 235 is in a relaxed state, the pressing plate 212 drives the mounting plate 234 to move upward, so that the mounting plate 234 drives the rubber nozzle 233 to move upward through the mounting tube 231, so that the rubber nozzle 233 is separated from the interface of the gas meter case 5, thereby facilitating the removal of the gas meter case 5 from the supporting assembly 21.

[0048] Reference Figure 7The gas circulation mechanism 2 also includes a clamping assembly 25, which includes a first clamping block 251, a second clamping block 252 and a clamping spring 253. A support plate 254 is fixedly installed on the horizontal section of the support rod 211. The first clamping block 251 and the second clamping block 252 are both rotatably installed on the support plate 254, and the first clamping block 251 and the second clamping block 252 are symmetrically arranged, and a space for placing the gas meter case 5 is reserved between the first clamping block 251 and the second clamping block 252, and the rotating shaft of the first clamping block 251 is located between the upper end and the lower end of the first clamping block 251, and the rotating shaft of the second clamping block 252 is also located between the upper end and the lower end of the second clamping block 252. A top plate 255 is slidably installed on the top wall of the support plate 254 along the vertical direction, and the bottom wall of the top plate 255 abuts against the lower ends of the first clamping block 251 and the second clamping block 252. The clamping spring 253 is installed between the top plate 255 and the support plate 254, and one end of the clamping spring 253 abuts against the bottom wall of the top plate 255, and the other end abuts against the top wall of the support plate 254.

[0049] Reference Figure 2 The immersion mechanism 3 includes an immersion box 31 and a lifting assembly 32. The lifting assembly 32 includes a lifting motor 321, a lifting screw rod 322 and a lifting plate 323. The lifting screw rod 322 is rotatably installed on the box body 1 along the vertical direction, and the lifting screw rods 322 are rotatably arranged at both ends of the box body 1. There are two lifting motors 321, and the two lifting motors 321 correspond to the two lifting screw rods 322 one by one. The two lifting motors 321 are fixedly installed on the box body 1, and the output shaft of the lifting motor 321 is coaxially connected with the upper end of the lifting screw rod 322. The lifting plate 323 is slidably installed on the box body 1 along the vertical direction, and the lifting plate 323 is located below the gas circulation mechanism 2, and the two ends of the lifting plate 323 are respectively threadedly connected to the two lifting screw rods 322. The immersion box 31 is made of transparent glass, and the upper end of the immersion box 31 is open. The immersion box 31 is fixedly mounted on the top wall of the lifting plate 323. Water is passed into the immersion box 31, and the immersion box 31 is used to immerse the gas meter housing 5 on the supporting assembly 21 in water.

[0050] Reference Figure 8The cleaning mechanism 4 includes a cleaning brush 41 and a driving assembly 42. The driving assembly 42 includes a driving motor 421, a driving chain 422 and a driving sprocket 423. There are five driving sprockets 423, four of which correspond to the four corners of the gas meter case 5 respectively, and are rotatably mounted on the inner bottom wall of the immersion box 31, and the rotation axes of the four driving sprockets 423 are all in the vertical direction. The remaining driving sprocket 423 is rotatably mounted below the vertical section of the support rod 211, and the rotation axis of the driving sprocket 423 is parallel to the rotation axes of the remaining four driving sprockets 423, and the five driving sprockets 423 are arranged to form a "convex" shape. The driving motor 421 is fixedly mounted on the bottom wall of the lifting plate 323, and the output shaft of the driving motor 421 passes through the lifting plate 323 and the bottom wall of the immersion box 31 in sequence, and the output shaft of the driving motor 421 is coaxially connected to one of the driving sprockets 423. The driving chain 422 is wound around five driving sprockets 423, and two auxiliary sprockets 425 are rotatably installed on the bottom wall of the immersion box 31 below the support rod 211. The auxiliary sprockets 425 are used to compress the driving chain 422 so that the driving chain 422 also forms a "convex" shape. A mounting block 424 is fixedly installed at the lower end of the cleaning brush 41, and the mounting block 424 is fixedly installed on the side wall of the driving chain 422.

[0051] The working principle of the embodiment of the present application is as follows: the gas meter case 5 to be tested is placed on the support plate 254 on the support rod 211, so that the two interfaces at the upper end of the gas meter case 5 are aligned with the air inlet connector 221 and the air outlet connector 222 respectively, and the top plate 255 on the support plate 254 is pressed down by the gravity of the gas meter case 5 itself, so that the top plate 255 compresses the clamping spring 253 and drives the lower ends of the first clamp block 251 and the second clamp block 252 to rotate, so that the upper ends of the first clamp block 251 and the second clamp block 252 move toward the direction of the gas meter case 5 and contact the side wall of the gas meter case 5, thereby preliminarily limiting the gas meter case 5.

[0052] Then, the pressing cylinder 213 drives the pressing plate 212 to move downward, so that the pressing plate 212 drives the air inlet joint 221 and the air outlet joint 222 to move downward, and at the same time, the pressing plate 212 also drives the mounting plate 234 to move downward, thereby driving the rubber nozzle 233 to move downward, so that the rubber nozzle 233 is plugged into the interface at the upper end of the gas meter case 5, so that the outer wall of the rubber nozzle 233 contacts the inner wall of the interface of the gas meter case 5, so that the descent of the mounting plate 234 is resisted, so that the pressing plate 212 compresses the buffer spring 235, and drives the air inlet joint 221 and the air outlet joint 222 to descend relative to the mounting tube 231 on the mounting plate 234, so that the support ball 232 moves along with the air inlet joint 221 and the air outlet joint 222. The gas joint 222 descends, so that the peripheral side wall of the expansion ball 232 contacts the inner wall of the rubber nozzle 233, thereby expanding the tapered portion of the lower end of the rubber nozzle 233, so that the outer side wall of the rubber nozzle 233 located in the interface of the gas meter case 5 contacts the inner wall of the interface of the gas meter case 5, thereby increasing the contact area between the rubber nozzle 233 and the inner wall of the interface of the gas meter case 5, thereby facilitating improving the sealing of the interface between the rubber nozzle 233 and the gas meter case 5. At the same time, since the outer side wall of the expansion ball 232 contacts the inner wall of the rubber nozzle 233, the sealing between the expansion ball 232 and the rubber nozzle 233 is also maintained, so that the air from the external gas source can smoothly enter the gas meter case 5.

[0053] And while the pressure plate 212 drives the opening ball 232 to descend, the opening ball 232 also drives the guide block 236 to descend to the top rod 238 through the guide rod 2321, so that the contact slope at the lower end of the guide block 236 contacts the end of the top rod 238, thereby pushing the top rod 238 away from the mounting tube 231, so that the top rod 238 compresses the positioning spring 239 and pushes the upper end of the clamping rod 2310 to rotate away from the mounting tube 231, so that the lower end of the clamping rod 2310 rotates toward the rubber nozzle 233 and contacts the outer wall of the interface of the gas meter case 5, thereby further positioning the gas meter case 5, thereby reducing the shaking of the gas meter case 5 when the gas meter case 5 is immersed in water, thereby affecting the sealing between the gas meter case 5 and the rubber nozzle 233.

[0054] Subsequently, the lifting screw 322 is driven to rotate by the lifting motor 321, so that the lifting screw 322 drives the lifting plate 323 to move upward, thereby driving the lifting plate 323 to drive the immersion box 31 to move upward, and the gas meter case 5 is immersed in the water stored in the immersion box 31 until the water level reaches the interface at the upper end of the gas meter case 5. Then, one of the driving sprockets 423 is driven to rotate by the driving motor 421, so that the driving sprocket 423 drives the other driving sprockets 423 to rotate through the driving chain 422, so that the cleaning brush 41 on the driving chain 422 also moves with the operation of the driving chain 422, so that the brush part of the cleaning brush 41 moves along the splicing part of the gas meter case 5 for one circle, thereby cleaning the bubbles at the splicing part of the gas meter case 5, thereby reducing the bubbles generated when the gas meter case 5 is just immersed in water and adhering to the splicing position of the gas meter case 5, thereby affecting the subsequent detection of the water tightness of the gas meter case 5.

[0055] Finally, air is introduced into the gas meter case 5 through the air inlet joint 221 from an external air source, and discharged from the gas meter case 5 from the air outlet joint 222, and it is observed whether bubbles appear at the joints of the gas meter case 5. If no bubbles appear, it is determined that the water tightness of the gas meter case 5 is good; if bubbles appear, it is determined that the water tightness of the gas meter case 5 is poor, thereby realizing the detection of the gas meter case 5.

[0056] After the test is completed, the immersion box 31 is lowered to remove the gas meter housing 5 from the water, and then the pressing cylinder 213 drives the pressing plate 212 to move upward, so that the pressing plate 212 drives the air inlet joint 221 and the air outlet joint 222 to move upward, thereby driving the opening ball 232 to move upward, so that the opening ball 232 is separated from the rubber nozzle 233. At the same time, the opening ball 232 drives the guide block 236 to separate from the push rod 238 through the guide rod 2321, so that the upper end of the clamp rod 2310 rotates and resets in the direction of the mounting tube 231 driven by the positioning spring 239, thereby driving the push rod 238 to reset, so that the lower end of the clamp rod 2310 is separated from the outer wall of the interface of the gas meter housing 5. Then, as the pressing plate 212 continues to rise, the pressing plate 212 drives the mounting plate 234 to move upward, so that the mounting plate 234 drives the mounting tube 231 to rise, so that the mounting tube 231 drives the rubber nozzle 233 to move upward, so that the rubber nozzle 233 is separated from the interface of the gas meter case 5, thereby releasing the positioning of the upper end of the gas meter case 5. Finally, by lifting the gas meter case 5, the gas meter case 5 is separated from the top plate 255, so that the top plate 255 moves upward under the drive of the clamping spring 253, so that the upper ends of the first clamp block 251 and the second clamp block 252 are rotated in a direction away from the gas meter case 5, so that the first clamp block 251 and the second clamp block 252 release the gas meter case 5, thereby realizing the disassembly of the gas meter case 5.

[0057] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An ultrasonic gas meter water tightness detection device, comprising a housing (1), characterized in that: The box (1) is provided with a detection device for detecting the water tightness of a gas meter case (5), the detection device comprising an immersion mechanism (3), a gas circulation mechanism (2) and a cleaning mechanism (4), the gas circulation mechanism (2) comprising an inflation component (22) and a support component (21), the support component (21) being installed at the upper end of the box (1), the inflation component (22) being installed on the support component (21), the support component (21) being used to position the gas meter case (5), and the inflation component (22) being used to inject water into the gas meter case (5). 5), the immersion mechanism (3) is mounted on the box body (1) and is located below the gas circulation mechanism (2), the immersion mechanism (3) is used to immerse the gas meter case (5) positioned on the supporting assembly (21) in water, the cleaning mechanism (4) comprises a cleaning brush (41) and a driving assembly (42), the driving assembly (42) is mounted on the immersion mechanism (3), the cleaning brush (41) is mounted on the driving assembly (42), and the cleaning brush (41) is used to remove bubbles on the gas meter case (5) immersed in water.

2. The ultrasonic gas meter water tightness detection device according to claim 1, characterized in that: The driving assembly (42) comprises a driving motor (421), a driving chain (422) and a driving sprocket (423); a plurality of driving sprockets (423) are provided, and the plurality of driving sprockets (423) are rotatably mounted in the immersion mechanism (3), and the plurality of driving sprockets (423) are arranged along the circumference of the gas meter housing (5); the driving motor (421) is also mounted on the immersion mechanism (3), and the output shaft of the driving motor (421) is connected to one of the driving sprockets (423); the driving chain (422) is wound around the plurality of driving sprockets (423), and the cleaning brush (41) is mounted on the driving chain (422).

3. The ultrasonic gas meter water tightness detection device according to claim 1, characterized in that: The immersion mechanism (3) comprises an immersion box (31) and a lifting assembly (32); the lifting assembly (32) comprises a lifting motor (321), a lifting screw (322) and a lifting plate (323); the lifting screw (322) is mounted on the box body (1) in a vertical direction; the lifting motor (321) and the lifting plate (323) are also mounted on the box body (1); the output shaft of the lifting motor (321) is connected to one end of the lifting screw (322); the lifting plate (323) is threadedly connected to the lifting screw (322); the immersion box (31) is mounted on the lifting plate (323); the immersion box (31) is used to store water; and the immersion box (31) is used to store a gas meter casing (5).

4. The ultrasonic gas meter water tightness detection device according to claim 1, characterized in that: The supporting assembly (21) comprises a supporting rod (211), a pressing plate (212) and a pressing cylinder (213); the pressing cylinder (213) is mounted on the box body (1), and the piston rod of the pressing cylinder (213) extends downward; the pressing plate (212) is mounted on the piston rod of the pressing cylinder (213); the inflation assembly (22) is mounted on the pressing plate (212); the supporting rod (211) is L-shaped; the vertical section of the supporting rod (211) is mounted on the side wall of the pressing cylinder (213), and one end of the vertical section of the supporting rod (211) extends downward; the horizontal section of the supporting rod (211) extends in the direction of the pressing cylinder (213); and the space between the horizontal section of the supporting rod (211) and the pressing plate (212) is used to accommodate a gas meter housing (5).

5. The ultrasonic gas meter water tightness detection device according to claim 4, characterized in that: The inflation assembly (22) comprises an air inlet connector (221) and an air outlet connector (222), wherein the air inlet connector (221) is mounted at one end of the pressure plate (212), and the air outlet connector (222) is mounted at the other end of the pressure plate (212), and the air inlet connector (221) and the air outlet connector (222) are respectively connected to an external air source via a pipe, and the air inlet connector (221) and the air outlet connector (222) are respectively used to be plugged into an interface on a gas meter housing (5).

6. The ultrasonic gas meter water tightness detection device according to claim 5, characterized in that: The gas circulation mechanism (2) further comprises an air inlet sealing assembly (23) and an air outlet sealing assembly (24), wherein the air inlet sealing assembly (23) is mounted on the air inlet joint (221), and the air outlet sealing assembly (24) is mounted on the air outlet joint (222), and the air inlet sealing assembly (23) and the air outlet sealing assembly (24) have the same structure, and both the air inlet sealing assembly (23) and the air outlet sealing assembly (24) comprise a support member, a mounting plate (234) is slidably mounted on the bottom wall of the pressure plate (212), and a buffer spring (235) is mounted on the mounting plate (234), one end of the buffer spring (235) is connected to the mounting plate (234), and the other end is connected to the pressure plate (212), the support member comprises a mounting tube (231), a support ball (232) and a rubber nozzle (233), and the mounting plate (234) is provided with a plurality of support members. The tube (231) is sleeved on the air inlet joint (221), and the upper end of the mounting tube (231) is connected to the mounting plate (234), and a gap is left between the mounting tube (231) and the air inlet joint (221). The rubber nozzle (233) is in an inverted cone shape, and the rubber nozzle (233) is mounted on the lower end of the mounting tube (231), and a gap is also left between the rubber nozzle (233) and the air inlet joint (221). The rubber nozzle (233) is used to be plugged into the joint of the gas meter housing (5). The opening ball (232) is sleeved on the outer side wall of the lower end of the air inlet joint (221), and the opening ball (232) is located between the rubber nozzle (233) and the air inlet joint (221), and the side wall of the opening ball (232) is used to squeeze the inner wall of the rubber nozzle (233) close to the air inlet joint (221).

7. The ultrasonic gas meter water tightness detection device according to claim 6, characterized in that: The air inlet sealing assembly (23) and the air outlet sealing assembly (24) both further include a positioning member, wherein the positioning member includes a mounting rod (237), a push rod (238), a positioning spring (239) and a clamping rod (2310), wherein the mounting rod (237) is mounted on the side wall of the mounting tube (231), and the push rod (238) is mounted on the mounting rod (237) in a direction perpendicular to the axis of the mounting tube (231), and one end of the push rod (238) passes through the side wall of the mounting tube (231) and extends to the gap between the mounting tube (231) and the air inlet joint (221), and the push rod (238) is 38) One end close to the air inlet joint (221) is used to be connected to the opening ball (232), the clamping rod (2310) is rotatably mounted on the end of the mounting rod (237) away from the mounting tube (231), and one end of the clamping rod (2310) extends downward to the rubber nozzle (233), and the lower end of the clamping rod (2310) is used to abut against the outer wall of the gas meter housing (5) at the air inlet, the positioning spring (239) is installed on the top rod (238), and one end of the positioning spring (239) abuts against the side wall of the clamping rod (2310), and the other end is connected to the mounting rod (237).

8. The ultrasonic gas meter water tightness detection device according to claim 7, characterized in that: A guide rod (2321) is installed on the top wall of the support ball (232), and the guide rod (2321) is sleeved on the outer wall of the air intake joint (221). The guide rod (2321) extends upward along the axis of the air intake joint (221). A guide block (236) is installed on the upper end of the guide rod (2321), and an end of the guide block (236) close to the guide rod (2321) is provided with a contact inclined surface, and the contact inclined surface is used to contact with the top rod (238).

9. The ultrasonic gas meter water tightness detection device according to claim 4, characterized in that: The gas circulation mechanism (2) further comprises a clamping assembly (25), wherein the clamping assembly (25) comprises a first clamping block (251), a second clamping block (252) and a clamping spring (253); a support plate (254) is further mounted on the support rod (211); the first clamping block (251) and the second clamping block (252) are both mounted on the support plate (254); a space for accommodating a gas meter housing (5) is reserved between the first clamping block (251) and the second clamping block (252); and one end of the first clamping block (251) extends upward, and the other end extends obliquely in the direction of the second clamping block (252). One end of the second clamping block (252) extends upward, and the other end extends obliquely in the direction of the first clamping block (251); a top plate (255) is also installed on the support plate (254), and the top plate (255) is located above one end of the first clamping block (251) and the second clamping block (252) close to the support plate (254), and the top plate (255) is used to contact the lower ends of the first clamping block (251) and the second clamping block (252); the clamping spring (253) is installed on the top plate (255), and one end of the clamping spring (253) is also connected to the support plate (254).

10. The ultrasonic gas meter water tightness detection device according to claim 1, characterized in that: The gas circulation mechanism (2) and the cleaning mechanism (4) are provided in multiple groups.

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