CN111537034A

CN111537034A - Anti-disassembly type wireless remote transmission membrane type gas meter

Info

Publication number: CN111537034A
Application number: CN202010440507.4A
Authority: CN
Inventors: 朱伟泳; 袁林栋; 庄健; 杨少亮; 王法良; 叶骁; 王滨滨; 胡莽
Original assignee: SHANGHAI FIORENTINI GAS EQUIPMENT CO Ltd
Current assignee: SHANGHAI FIORENTINI GAS EQUIPMENT CO Ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-08-14
Also published as: WO2021232654A1

Abstract

The invention provides an anti-disassembly wireless remote transmission diaphragm gas meter, which comprises a shell and an upper cover arranged at an opening of the shell; the inner surface of the upper cover is provided with a probe, and a side pressure type key is arranged in the shell; the position of the side pressure type key is satisfied, when the upper cover is arranged on the shell, the probe presses down the side pressure type key; a controller connected with the side pressure type key and a motor valve connected with the controller are arranged in the shell; the controller is configured to send out a machine disassembling alarm signal when the side pressing type key bounces, and control the motor valve to be closed. The structure of high-sensitivity and high-reliability side pressure type keys and probes is utilized, and the wireless remote transmission function of the controller and the function of controlling the built-in motor valve are combined, so that a gas company can master the state of the gas meter in time.

Description

Anti-disassembly type wireless remote transmission membrane type gas meter

Technical Field

The invention relates to the field of sensor instruments, in particular to an anti-disassembly type wireless remote transmission membrane type gas meter.

Background

The diaphragm gas meter is mainly used for metering the natural gas of civil and industrial pipelines at user terminals. The gas meter body usually has a seal structure to prevent a user from disassembling the meter, or a disassembling trace is left under the condition of malicious forcible disassembly. At present, the traditional gas meter in the industry is mainly protected from being disassembled by adopting mechanical lead sealing, and the method continues to the wireless remote transmission membrane type gas meter. There are several disadvantages to this approach: for example: the gas meter can not be found in time after being disassembled, and the timeliness is poor; air leakage can be caused after disassembly, and the safety of gas utilization is influenced; data can be tampered after disassembly, and supply and sale difference data of a gas company is influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the anti-disassembly wireless remote transmission membrane type gas meter, which realizes the anti-disassembly function of the gas meter by adopting a disassembly detection mechanism and solves the problems of lead seal anti-disassembly in the prior art.

In order to solve the problems, the invention provides an anti-disassembly wireless remote transmission membrane type gas meter, which comprises a shell and an upper cover arranged at an opening of the shell; the inner surface of the upper cover is provided with a probe, and a side pressure type key is arranged in the shell; the position of the side pressure type key is satisfied, when the upper cover is arranged on the shell, the probe presses down the side pressure type key;

a controller connected with the side pressure type key and a motor valve connected with the controller are arranged in the shell; the controller is configured to send out a machine disassembling alarm signal when the side pressing type key bounces, and control the motor valve to be closed.

The invention is further improved in that a circuit board arranged opposite to the upper cover is arranged in the shell, and the side pressure type key and the controller are arranged on the circuit board.

The invention is further improved in that the side-pressure type key is arranged on the back surface of the circuit board and is provided with a key shaft with a telescopic direction parallel to the circuit board; the circuit board is provided with a through hole corresponding to the key shaft of the side pressure type key, and the through hole is used for the probe to penetrate through so as to press the key shaft of the side pressure type key.

The invention is further improved in that the shape of the through hole is matched with the cross-sectional shape of the probe; the ratio of the width of the key shaft to the width of the narrowest part of the cross-sectional shape of the probe is less than 1: 2.

In a further development of the invention, the arrangement positions of the side pressure keys are selected at random around the through holes and are satisfied such that the probe presses down the key shafts of the side pressure keys when the upper cover is mounted on the housing.

A further improvement of the invention is that the probe is perpendicular to the inner surface of the upper cover; the end part of the probe is wedge-shaped or conical, and the inclined plane at the end part of the probe is used for pushing the key shaft of the side pressure type key.

A further development of the invention is that the motor valve is connected between the inlet pipe and the outlet pipe.

A further development of the invention is that the controller is connected to a wireless communication module.

The beneficial technical effects of the invention are as follows: the structure of high sensitive, high reliable side pressure formula button of make full use of and probe combines the function of the wireless teletransmission of controller and the function of control built-in motor valve to can let the gas company in time master the state of gas table, meet and can in time close built-in motor valve when tearing open the machine, guarantee gas safety, avoid being stolen gas, thereby guarantee the long-term measurement data accuracy of gas table, last steady operation in life cycle.

Drawings

Fig. 1 is a schematic front view of a wireless remote transmission membrane gas meter;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a cross-sectional view of a wireless remote diaphragm gas meter;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

FIG. 5 is an exemplary diagram of several alternative positions of the side press keys on the back side of the circuit board.

Detailed Description

The following description of the preferred embodiment of the present invention, in accordance with the accompanying drawings of which 1 is presented to enable a better understanding of the invention as to its functions and features.

Referring to fig. 1 to 4, an embodiment of the present invention includes a detachment-proof wireless remote diaphragm gas meter, which includes a housing 1. An opening is formed in the shell 1, an upper cover 2 is installed at the opening, and the upper cover 2 is used for shielding a circuit board 3 inside the shell 1. The circuit board 3 is disposed in parallel with the inner surface of the upper cover 2 with the front surface of the circuit board 3 facing the inner surface of the upper cover 2.

In order to prevent the upper cover 2 from being detached intentionally, a side push button 4 is provided inside the housing 1, and a probe 5 is provided on the inner surface of the upper cover 2, in such a positional relationship that the probe 5 presses the side push button 4 from the side when the upper cover 2 is attached to the housing 1, and the side push button 4 is normally closed when the upper cover 2 is normal.

When the upper cover 2 is disassembled, the probe 5 is separated from the side pressure type key 4, and whether the upper cover 2 is disassembled can be monitored by monitoring the state of the side pressure type key 4. In some embodiments, the circuit board 3 is provided with a controller (integrated on the circuit board, not shown) connected to the side pressure type key 4 and a motor valve 6 connected to the controller. The side pressure type key 4 is not shown in fig. 3 and 4.

The controller is configured to send out an detaching alarm signal when the side pressure type key 4 is bounced, and control the motor valve 6 to be closed. The motor valve 6 is connected between the air inlet pipe and the air outlet pipe, when the motor valve is closed, the gas meter can not normally use gas, the safety of a gas meter pipeline system is ensured, meanwhile, gas theft is avoided, poor gas supply and sales cannot be generated, and a gas company cannot lose the gas.

The controller is connected with the wireless communication module, when the upper cover 2 is detached through the side pressure type keys 4, the upper cover is uploaded to the gas meter management platform through the wireless communication module, and a gas company can timely receive the information that the gas meter is detached, so that the gas company can timely master the state information that the gas meter is detached. In this embodiment, the controller has a simple operation logic, and only needs to generate a switching signal and a fixed digital signal sequence according to the state of a key, which can be implemented by using a simple digital logic circuit without using dedicated software, and does not involve improvement of the method.

In some embodiments, the side press keys 4 and the controller are disposed on the back side of the circuit board 3 (the circuit board 3 faces the upper cover 2). The side press key 4 has a key shaft 7 extending in parallel with the circuit board 3. The front surface of the circuit board 3 faces the upper cover 2, a through hole corresponding to the key shaft 7 is arranged on the circuit board 3, and the through hole 8 is used for the probe 5 to pass through so as to press the key shaft 7 of the side press type key 4.

To further increase the safety, in a particular embodiment the shape of the through-holes in the circuit board 3 are adapted to the cross-sectional shape of the probes 5. The ratio of the width d of the key shaft 7 to the width of the narrowest portion of the cross-sectional shape of the probe 5 is less than 1: 2. The layout position of the side push buttons 4 is selected at random around the through holes of the circuit board 3 and is satisfied such that the probe 5 presses the key shafts 7 of the side push buttons 4 when the upper cover 2 is mounted on the housing 1. As shown in fig. 5, a1, a2 and a3 around the through hole 8 are all positions of the optional side pressure type key 4. Fig. 2 shows the key shaft 7 when it is not depressed. During the depression, the key shaft 7 is retracted along its axis toward the inside of the main body of the side pressure type key 4 until the end of the key shaft 7 is flush with the side surface of the main body of the side pressure type key 4.

In some embodiments, the through-hole 8 in the circuit board 3 is circular and the probe 5 is also circular in cross-section 2, which may form a clearance fit. In this case, the side pressure type key 4 can be arbitrarily selected in the circumferential direction. The circular through-hole 8 allows a larger optional installation range of the side pressure type key 4 than the square through-hole 8.

The random selection of the installation positions of the side pressure type keys 4 has the advantages that the side pressure type keys 4 are arranged on the back surface of the circuit board 3, so that a disassembling person cannot observe the positions of the key shafts 7, and the situation that the disassembling person takes targeted measures according to the positions of the side pressure type keys 4 in the disassembling process when using thin sheets and the like is avoided. The use of the key shaft 7 having a narrow width makes it difficult for the detacher to block the spring back of the key shaft 7 depending on the position of the key shaft 7.

In addition, in the embodiment, the lateral pressure type key 4 adopts a small trigger stroke (the trigger stroke refers to that the lateral pressure type key 4 is disconnected by rebounding a small distance from the key shaft 7), so that even if the probe 5 is inserted into the through hole 8 in the disassembling process, the posture of the probe 5 is difficult to keep unchanged, the lateral pressure type key 4 is disconnected by slight swinging of the probe 5, and the disassembling difficulty is increased.

In some embodiments, the probe 5 is perpendicular to the inner surface of the upper cover 2; the end part of the probe 5 is wedge-shaped or cone-shaped, and the inclined surface at the end part of the probe 5 is used for pushing the key shaft 7 of the side pressure type key 4 to shrink.

While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.

Claims

1. An anti-disassembly type wireless remote transmission membrane type gas meter is characterized by comprising a shell and an upper cover arranged at an opening of the shell; the inner surface of the upper cover is provided with a probe, and a side pressure type key is arranged in the shell; the position of the side pressure type key is satisfied, when the upper cover is arranged on the shell, the probe presses down the side pressure type key;

2. The gas meter of claim 1, wherein a circuit board is disposed inside the housing and faces the upper cover, and the side push button and the controller are disposed on the circuit board.

3. The gas meter of claim 2, wherein the side-pressure type key is disposed on the back of the circuit board and has a key axis extending in a direction parallel to the circuit board; the circuit board is provided with a through hole corresponding to the key shaft of the side pressure type key, and the through hole is used for the probe to penetrate through so as to press the key shaft of the side pressure type key.

4. The gas meter of claim 3, wherein the shape of the through hole is adapted to the cross-sectional shape of the probe; the ratio of the width of the key shaft to the width of the narrowest part of the cross-sectional shape of the probe is less than 1: 2.

5. The gas meter of claim 4, wherein the arrangement position of the side push button is selected at random around the through hole and is satisfied that the probe presses down the key shaft of the side push button when the upper cover is mounted on the housing.

6. The gas meter of claim 3, wherein the probe is perpendicular to the inner surface of the upper cover; the end part of the probe is wedge-shaped or conical, and the inclined plane at the end part of the probe is used for pushing the key shaft of the side pressure type key.

7. The gas meter of claim 1, wherein the electromechanical valve is connected between the gas inlet pipe and the gas outlet pipe.

8. The gas meter of claim 1, wherein the controller is connected to the wireless communication module.