A gas meter anti-theft mechanism

Abstract

The utility model discloses a kind of gas meter's anti-gas stealing mechanism, the utility model relates to gas meter technical field.The anti-gas stealing mechanism of the gas meter includes detection pipe, the both ends of the detection pipe are provided with the protection mechanism for preventing user gas stealing, the protection mechanism includes: detection component, for monitoring user gas stealing behavior;Plugging component, including the motor valve of setting in detection component bottom and the connecting block inside detection component, as long as there is airflow flow, the pressure difference in connecting pipe will be generated, air pressure sensor will data transmission to control panel, control panel can be judged gas state accordingly;On the other hand, cover in plugging component resets and blocks by torsional spring and magnet, even if small flow rate gas can also lift cover, make cover rotate around connecting shaft, distance measuring module will monitor the distance change with magnet in real time, data is fed back to control panel, form double monitoring, avoid the limitation of single dependence flow rate driven component.

Description

Technical Field

[0001] This utility model relates to the field of gas meter technology, specifically to an anti-theft mechanism for gas meters. Background Technology

[0002] Gas meter anti-theft mechanisms are mainly used to prevent users from stealing gas through improper means, to ensure the accuracy of gas metering and the legitimate rights and interests of gas companies, and to maintain the normal order and safety of gas use.

[0003] The existing utility model patent with announcement number CN214277071U discloses an anti-theft device for an ultrasonic gas meter, belonging to the field of gas meter application technology. It includes a cover with an air inlet and an air outlet at its upper end. An air inlet pipe is fixedly connected to the lower end of the air inlet, and an air outlet pipe is fixedly connected to the lower end of the air outlet. A rotating mechanism is fixedly connected inside the air outlet pipe. The lower ends of the air outlet pipe and the air inlet pipe are fixedly connected to the gas meter body. The upper surface inside the cover contacts the gas meter body, and anti-theft mechanisms are contacted on both sides of the gas meter body. Two first bevel gears drive a lead screw to rotate, causing the nut sleeve on the lead screw to move, which in turn drives two clamping plates to clamp the gas meter body. The use of the nut sleeve and clamping plates achieves the clamping of the gas meter body. In reverse, the flow of gas causes the blades in the air outlet pipe to rotate. The rotation of the lead screw causes the screw sleeve to move downwards, causing the gas-blocking block to block the circular hole on the gas-blocking plate.

[0004] If the user reverses the connection and uses only a small flow of gas (such as only turning on a low-power gas stove) during the use of the aforementioned anti-theft gas device, the gas flow rate may be too low to drive the blades to a sufficient speed, resulting in insufficient transmission torque of the first gear, chain, and second gear. The screw cannot drive the screw sleeve to move downward to the position of "the gas blocking block sealing the circular hole of the gas blocking plate", and the anti-theft function will eventually fail. In addition, the transmission mechanism and the anti-theft mechanism of the device are integrated inside the housing, and the components are interconnected. If a component is damaged, the entire housing and related mechanisms must be disassembled for replacement, making the repair process complicated. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an anti-theft mechanism for gas meters, which solves the problems of low gas flow rate causing the anti-theft function to fail and inconvenient maintenance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A gas meter anti-theft mechanism includes a detection tube, and both ends of the detection tube are equipped with protective mechanisms to prevent users from stealing gas. The protective mechanisms include: Detection components are used to monitor users' gas theft behavior; The sealing assembly includes a motor valve disposed at the bottom of the detection assembly and a connecting block inside the detection assembly. A connecting shaft is inserted through the center of the connecting block, and torsion springs are fixedly installed at both ends of the connecting shaft. A cover plate is fixedly installed at the center of the connecting shaft, and a silicone pad is fitted into the bottom of the cover plate. A magnet is fitted into one end of the cover plate.

[0007] Preferably, the detection assembly includes a control board fixedly installed below the detection tube, and a protective shell is provided on the outside of the control board. The detection assembly also includes connecting pipes fixedly installed at both ends of the detection tube, and a ranging module and a barometric pressure sensor are fixedly installed inside the connecting pipes.

[0008] Preferably, the top of the protective shell is connected to the bottom of the detection tube, the control board is located inside the protective shell, and the two ends of the connecting tube are circular pipes and the center is a rectangular pipe.

[0009] Preferably, one side of the inner wall of the connecting pipe is inclined, the connecting pipes at both ends of the detection pipe are installed in a mirror image, the ranging module is fixedly installed on the inclined surface of the central rectangular pipe of the connecting pipe, and the ranging module points towards the magnet.

[0010] Preferably, the connecting shaft and the connecting block form a rotatable connection, one end of the torsion spring is fixedly connected to the connecting block, and the other end is fixedly connected to the connecting shaft, and the area of ​​the cover plate is larger than the cross-sectional area of ​​the circular pipe of the connecting pipe.

[0011] Preferably, the cover plate is rotatably connected to the connecting pipe via a connecting shaft, and the end of the cover plate is provided with an opening structure that fits into a magnet. The cover plate is attracted to the bottom surface of the rectangular pipe of the connecting pipe by the magnet.

[0012] Beneficial effects This utility model provides an anti-theft mechanism for gas meters. Compared with the prior art, it has the following advantages: (1) The gas meter’s anti-theft mechanism has a detection component and a blocking component that are relatively independent. The control board in the detection component has an independent protective shell to prevent damage from external forces. The connecting pipe and the detection pipe are connected by threads. If the ranging module or the gas pressure sensor is damaged, the connecting pipe can be removed and replaced separately without disassembling the entire detection pipe. The connecting block, connecting shaft, torsion spring and other components in the blocking component are only connected to the connecting pipe through the connecting block. The connecting shaft and the connecting block are rotatably connected. The cooperation between the components is simple. When replacing, you only need to open the connecting pipe to operate without moving other mechanisms. The motor valve is located at the bottom of the detection component and is only connected to the control board through a line. It has little connection with other mechanical components. When a fault occurs, the motor valve can be disassembled and installed separately without disassembling the entire anti-theft mechanism, which greatly reduces the maintenance difficulty and disassembly range.

[0013] (2) The gas meter's anti-theft mechanism uses a pressure sensor in its detection component to capture minute pressure changes. Even at extremely low gas flow rates, as long as there is normal gas use or gas theft causing airflow, the gas pressure in the connecting pipe will differ. The pressure sensor transmits the data to the control board, which can then make a preliminary judgment on the gas usage status. On the other hand, the cover plate in the sealing component is reset and sealed using a torsion spring and a magnet. Even a low gas flow rate can lift the cover plate, causing it to rotate around the connecting shaft. The distance measuring module monitors the change in distance from the magnet in real time and feeds the data back to the control board, forming dual monitoring and avoiding the limitations of relying solely on flow rate-driven components. When gas theft is detected, the control board directly instructs the motor valve to start sealing. The motor valve does not need to rely on airflow torque; it can complete the sealing solely through electrical control, ensuring that the anti-theft function can still be effectively triggered even if the gas flow rate is too low. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the control board mounting structure of this utility model; Figure 3 This is a schematic diagram of the installation structure of the ranging module of this utility model; Figure 4 This is a schematic diagram of the cover plate installation structure of this utility model; In the diagram: 1. Detection tube; 2. Protective mechanism; 21. Detection component; 211. Control board; 212. Protective shell; 213. Connecting tube; 214. Distance measuring module; 215. Barometric pressure sensor; 22. Sealing component; 221. Motor valve; 222. Connecting block; 223. Connecting shaft; 224. Torsion spring; 225. Cover plate; 226. Silicone pad; 227. Magnet. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a gas meter anti-theft mechanism includes a detection tube 1, and protective mechanisms 2 for preventing users from stealing gas are provided at both ends of the detection tube 1. The protective mechanisms 2 include: The detection component 21 is used to monitor users' gas theft behavior. The detection component 21 includes a control board 211 fixedly installed below the detection tube 1. A protective shell 212 is provided on the outside of the control board 211. The detection component 21 also includes connecting pipes 213 fixedly installed at both ends of the detection tube 1. A ranging module 214 and a pressure sensor 215 are fixedly installed inside the connecting pipe 213. The top of the protective shell 212 is connected to the bottom of the detection tube 1. The control board 211 is located inside the protective shell 212. The two ends of the connecting pipe 213 are circular pipes and the center is a rectangular pipe. One side of the inner wall of the connecting pipe 213 is inclined. The connecting pipes 213 at both ends of the detection tube 1 are installed in a mirror image. The ranging module 214 is fixedly installed on the inclined surface of the central rectangular pipe of the connecting pipe 213. The ranging module 214 points towards the magnet 227.

[0017] Specifically, both ends of the connecting pipe 213 are provided with threaded structures, and the connecting pipe 213 is connected to the detection pipe 1 through the threaded structures. The detection pipe 1 is provided with a guide plate inside, and the top of the detection pipe 1 is provided with an opening structure for installing an ultrasonic generator and a sensor. One end of the detection pipe 1 is connected to the sealing component 22 inside the connecting pipe 213 at the bottom of the rectangular pipe of the connecting pipe 213, and the other end is connected to the sealing component 22 inside the connecting pipe 213 at the top of the rectangular pipe of the connecting pipe 213. The ranging module 214 can monitor the distance from itself to the magnet 227, and the air pressure sensor 215 can monitor the air pressure inside the central rectangular pipe of the connecting pipe 213. When the user steals air by privately connecting to the meter, due to the influence of the two sets of sealing components 22, the monitoring data of the air pressure sensor 215 on one side will form an air pressure difference with the other side, thereby detecting whether the user is stealing air.

[0018] The sealing component 22 includes a motor valve 221 located at the bottom of the detection component 21 and a connecting block 222 inside the detection component 21. A connecting shaft 223 is inserted through the center of the connecting block 222. Torsion springs 224 are fixedly installed at both ends of the connecting shaft 223. A cover plate 225 is fixedly installed at the center of the connecting shaft 223. A silicone pad 226 is fitted into the bottom of the cover plate 225. A magnet 227 is fitted into one end of the cover plate 225. The connecting shaft 223 and the connecting block 222 form a rotatable connection. One end of the torsion spring 224 is fixedly connected to the connecting block 222, and the other end is fixedly connected to the connecting shaft 223. The area of ​​the cover plate 225 is larger than the cross-sectional area of ​​the circular pipe of the connecting pipe 213. The cover plate 225 forms a rotatable connection with the connecting pipe 213 through the connecting shaft 223. The end of the cover plate 225 is provided with an opening structure that fits into the magnet 227. The cover plate 225 is attracted to the bottom surface of the rectangular pipe of the connecting pipe 213 by the magnet 227.

[0019] Specifically, the motor valve 221 is fixedly installed at the bottom of the connecting pipe 213. The torque provided by the torsion spring 224 to the connecting shaft 223 and the attraction between the magnet 227 and the connecting pipe 213 cause the silicone gasket 226, which is fitted into the bottom of the cover plate 225, to seal one end of the connecting pipe 213. The mirrored installation of the connecting pipes 213 on both sides of the detection pipe 1 restricts the direction of gas flow inside the pipeline. When the cover plate 225 rotates, the monitoring data from the ranging module 214 will change. When the user uses gas, due to changes in gas pressure, the cover plate... The cover 225 will be lifted by the gas and rotate. When the gas is not in use, the cover 225 will be reset by the force of the torsion spring 224 and block the gas flow path under the combined action of the magnet 227 and the torsion spring 224. During this process, the monitoring data of the ranging module 214 will change continuously. By setting the data of the ranging module 214 when the cover 225 is closed as the initial value, when the user uses a metal wire or other object to open the cover 225, the monitoring data of the ranging module 214 will not change with use, thereby monitoring whether the user is stealing gas.

[0020] Specifically, the ranging module 214 is model WT53R-TTL, the barometric pressure sensor 215 is model BMP280, and the motor valve 221 is model XED-V1Q. In addition, all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0021] During operation, when the gas is in normal use, the gas enters from the connecting pipe 213 at one end of the detection pipe 1. The pressure change caused by the gas flow pushes up the cover plate 225, and the cover plate 225 rotates around the connecting shaft 223. The torsion springs 224 at both ends of the connecting shaft 223 are twisted. At this time, the distance measuring module 214 in the connecting pipe 213 detects the change in distance to the magnet 227 on the cover plate 225. The data is transmitted in real time to the control board 211 located inside the protective shell 212. The control board 211 judges that the gas is in normal use. After gas usage is stopped, the torsion spring 224 releases its elastic force, causing the connecting shaft 223 to reset, the cover plate 225 to fall back, and the magnet 227 to adhere to the bottom surface of the rectangular pipe of the connecting pipe 213. The silicone pad 226 at the bottom of the cover plate 225 tightly seals the circular pipe of the connecting pipe 213. The distance measuring module 214 monitors the data and restores the initial value. If the user attempts to steal gas by reversing the connection (inverting the gas input and output ends), because the connecting pipes 213 at both ends of the detection pipe 1 are installed in a mirror image, the cover plate 225 inside the original gas outlet connecting pipe 213 is initially located above the rectangular pipe and is fixed by the elastic force of the torsion spring 224 and the attraction force of the magnet 227. The gas flow direction of the reversed connection is opposite to the normal opening direction of the cover plate 225, making it impossible to steal gas. When the cover plate 225 is opened, the gas pressure sensor 215 inside the connecting pipe 213 at that end will detect abnormal gas pressure accumulation (which does not conform to the normal gas pressure change pattern). At the same time, the distance measuring module 214 will detect that the distance to the magnet 227 remains at its initial value. After these two types of abnormal data are transmitted to the control board 211, the control board 211 will determine that it is gas theft due to reverse connection. If the user steals gas by making a private connection before the meter or by using a metal wire to open the cover plate 225, the private connection before the meter will cause the gas pressure sensor 215 inside the connecting pipe 213 at both ends of the detection pipe 1 to detect a significant gas pressure difference. Opening the cover plate 225 with a metal wire will cause the data monitored by the distance measuring module 214 to no longer change with the gas usage status. The control board 211 can identify such gas theft behavior in both cases. Finally, the control board 211 sends a command to the motor valve 221 at the bottom of the connecting pipe 213. The motor valve 221 starts and blocks the gas passage, completing the anti-gas theft action.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas meter anti-theft mechanism, comprising a detection tube (1), characterized in that: The detection tube (1) is provided with protective mechanisms (2) at both ends to prevent users from stealing gas. The protective mechanisms (2) include: Detection component (21) is used to monitor users' gas theft behavior; The sealing assembly (22) includes a motor valve (221) disposed at the bottom of the detection assembly (21) and a connecting block (222) inside the detection assembly (21). A connecting shaft (223) is inserted through the center of the connecting block (222). Torsion springs (224) are fixedly installed at both ends of the connecting shaft (223). A cover plate (225) is fixedly installed at the center of the connecting shaft (223). A silicone pad (226) is fitted into the bottom of the cover plate (225). A magnet (227) is fitted into one end of the cover plate (225).

2. The anti-theft mechanism for a gas meter according to claim 1, characterized in that: The detection assembly (21) includes a control board (211) fixedly installed below the detection tube (1). A protective shell (212) is provided on the outside of the control board (211). The detection assembly (21) also includes connecting pipes (213) fixedly installed at both ends of the detection tube (1). A ranging module (214) and a barometric pressure sensor (215) are fixedly installed inside the connecting pipe (213).

3. The anti-theft mechanism for a gas meter according to claim 2, characterized in that: The top of the protective shell (212) is connected to the bottom of the detection tube (1), the control board (211) is located inside the protective shell (212), and the two ends of the connecting tube (213) are circular pipes and the center is a rectangular pipe.

4. The anti-theft mechanism for a gas meter according to claim 2, characterized in that: The inner wall of the connecting pipe (213) has an inclined structure on one side. The connecting pipes (213) at both ends of the detection pipe (1) are installed in a mirror image. The ranging module (214) is fixedly installed on the inclined surface of the central rectangular pipe of the connecting pipe (213). The ranging module (214) points towards the magnet (227).

5. The anti-theft mechanism for a gas meter according to claim 1, characterized in that: The connecting shaft (223) and the connecting block (222) form a rotatable connection. One end of the torsion spring (224) is fixedly connected to the connecting block (222), and the other end is fixedly connected to the connecting shaft (223). The area of ​​the cover plate (225) is larger than the cross-sectional area of ​​the circular pipe of the connecting pipe (213).

6. The anti-theft mechanism for a gas meter according to claim 1, characterized in that: The cover plate (225) is rotatably connected to the connecting pipe (213) via the connecting shaft (223). The end of the cover plate (225) is provided with an opening structure that fits into the magnet (227). The cover plate (225) is attracted to the bottom surface of the rectangular pipe of the connecting pipe (213) by the magnet (227).

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