Diaphragm gas meter with anti-tipping detection function

Abstract

The utility model belongs to the technical field of gas meters, and particularly discloses a diaphragm gas meter with an anti-rollover detection function, which comprises a base meter and an intelligent head, the base meter comprises a metering assembly, a built-in motor valve and a temperature sensor, the metering assembly adopts a reciprocating slide valve structure, the reciprocating slide valve structure comprises a valve cover, a valve seat and a slide rail, and the temperature sensor is arranged in the valve cover. The valve cover and the valve seat are precisely combined, the sliding rail is installed in the center of the connecting face of the valve seat and the valve cover, the gas meter body is installed at the bottom of the valve seat and is a gas chamber composed of two leather membranes, one side of each leather membrane is fixedly connected with a metal sheet, and a plurality of installation holes are formed in the surface of each leather membrane at equal intervals. The mounting hole is formed in the outer side of the sealing rib, and a fixing hole corresponding to the mounting hole is formed in the metal sheet; an outlet pipe is arranged at the upper end of the valve deck, one end of a transmission connecting rod is installed on the outlet pipe, and the other end of the transmission connecting rod is arranged at the upper end of the valve seat.

Description

Technical Field

[0001] The utility model relates to the technical field of gas meters, in particular to a membrane gas meter with anti-tilt detection function. Background Art

[0002] The diaphragm gas meter is a device used to measure gas flow. Its working principle is based on the relationship between the mass flow of gas passing through the diaphragm under certain conditions and the gas pressure difference. This gas meter uses the elastic deformation of the metal diaphragm to measure the gas flow. When the gas enters the gas meter through the air inlet, the flow cavity is divided into two parts, upper and lower, by the elastic metal diaphragm. The gas flows through the upper and lower cavities through the guide holes on the diaphragm, forming a certain pressure difference. This pressure difference changes with the change of flow, and the rotor speed is kept stable through a specific mechanism to complete the measurement of gas flow.

[0003] The pressure of the gas acts on the membrane, and the middle part of the membrane is clamped by a metal sheet. The metal sheet can move left and right in the metering chamber, and the metal sheet will drive the membrane to move left and right. When the membrane moves left and right frequently, it is inevitable that the membrane will be pulled out of the installation gap between the cover and the gas meter due to the tension generated by the movement. In addition, because the membrane is thin, after a long period of use, relative sliding between the membrane and the metal sheet is likely to occur, causing the membrane to easily slip from the edge of the metal sheet during use, resulting in gas leakage and affecting safety. Utility Model Content

[0004] The utility model aims to provide a diaphragm gas meter with anti-tilt detection function to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a diaphragm gas meter with anti-tilt detection, comprising a base meter and an intelligent head, the base meter comprising a metering component, a built-in motor valve and a temperature sensor, the metering component adopts a reciprocating slide valve structure, the reciprocating slide valve structure comprises a valve cover, a valve seat and a slide rail, the valve cover and the valve seat are precisely combined, the slide rail is installed at the center of the connecting surface between the valve seat and the valve cover, the gas meter body is installed at the bottom of the valve seat, the body is an air chamber composed of two membranes, one side of the membrane is fixedly connected to a metal sheet, a ring-shaped sealing rib is arranged on the side of the membrane close to the metal sheet, a plug-in groove is arranged on the metal sheet at the position corresponding to the sealing rib, a plurality of mounting holes are equidistantly arranged on the surface of the membrane, and the mounting holes are arranged On the outside of the sealing rib, fixing holes are provided on the metal sheet corresponding to the mounting holes, and screws are provided in the corresponding mounting holes and the fixing holes to fix the membrane; an outlet pipe is provided on the upper end of the valve cover, one end of a transmission connecting rod is installed on the outlet pipe, and the other end of the transmission connecting rod is provided on the upper end of the valve seat; the intelligent head includes a microprocessor, a tipping detection module, a motor valve drive, and a counter. The temperature sensor in the base meter is connected to the microprocessor of the intelligent head, the tipping detection module is connected to the microprocessor for detecting the tilt angle of the gas meter, the output end of the counter is connected to the microprocessor, and the input end of the counter is connected to the metering component in the base meter, the input end of the motor valve drive module is connected to the microprocessor, and the output end of the motor valve drive module is connected to the built-in motor valve in the base meter.

[0006] Preferably, the membrane is a composite membrane, with nylon coated fabric in the middle and rubber layers on both sides, and the rubber layers are nitrile rubber.

[0007] Preferably, the membrane is provided with an annular arc groove, the arc groove is arranged on the inner side of the sealing rib, and the arc groove is located inside the metal sheet.

[0008] Preferably, the smart head also includes a NB-IoT module, which is connected to a microprocessor for remote transmission of gas meter data.

[0009] Preferably, the tipping detection module comprises a three-axis acceleration sensor.

[0010] Preferably, the smart head also includes an LCD display and an RTC clock connected to the microprocessor, and the smart head includes a lithium-ion battery connected to a DC / DC module through an isolation module to power the devices and circuits in the smart head.

[0011] Preferably, the smart head also includes a dry battery connected to the DC / DC module to power the devices and circuits in the smart head, the smart head includes a storage capacitor connected to the DC / DC module, and the smart head also includes a button connected to the microprocessor.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model sets a mounting hole to fix the diaphragm and the metal sheet, and sets a sealing rib to be clamped on the side wall of the metal sheet, so that when the flow inside the gas meter increases or decreases, it is not easy to produce a gap between the diaphragm and the metal sheet, thereby reducing the risk of leakage; the utility model sets an arc groove on the diaphragm, and when the working diaphragm of the gas meter moves and deforms, the setting of the arc groove improves the deformation capacity of the diaphragm, thereby improving the stability and service life of the diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the reciprocating slide valve metering component in the diaphragm gas meter;

[0014] Figure 2 It is a cross-sectional view of the fixing structure of the membrane and metal sheet of the metering component;

[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the membrane of the metering component;

[0016] Figure 4 This is a schematic diagram of the composition of a gas meter according to one embodiment of the utility model.

[0017] In the figure: 1. valve cover; 2. valve seat; 3. slide rail; 4. outlet pipe; 5. transmission connecting rod; 6. membrane; 601. arc groove; 602. mounting hole; 603. sealing rib; 61. nylon coated fabric; 62. nitrile rubber; 7. metal sheet; 701. fixing hole; 702. plug-in slot. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] See also Figure 1-4 The utility model provides a technical solution: a membrane gas meter with anti-tilt detection, comprising a base meter and an intelligent head.

[0022] The base meter includes a metering component, a built-in motor valve and a temperature sensor. The metering component adopts a reciprocating slide valve structure. The reciprocating slide valve structure includes a valve cover 1, a valve seat 2 and a slide rail 3. The valve cover 1 is precisely combined with the valve seat 2. The slide rail 3 is installed at the center of the connecting surface between the valve seat 2 and the valve cover 1. The gas meter body is installed at the bottom of the valve seat 2. The body is an air chamber composed of two membranes 6. One side of the membrane 6 is fixedly connected to a metal sheet 7. The side of the membrane 6 close to the metal sheet 7 is provided with an annular sealing rib 603. The metal The metal sheet 7 is provided with a plug-in groove 702 at a position corresponding to the sealing rib 603, and a plurality of mounting holes 602 are equidistantly provided on the surface of the membrane 6, and the mounting holes 602 are arranged on the outside of the sealing rib 603. The metal sheet 7 is provided with a fixing hole 701 corresponding to the mounting hole 602, and screws are arranged in the corresponding mounting holes 602 and the fixing holes 701 to fix the membrane 6; the upper end of the valve cover 1 is provided with an outlet pipe 4, and one end of a transmission connecting rod 5 is installed on the outlet pipe 4, and the other end of the transmission connecting rod 5 is arranged on the upper end of the valve seat 2;

[0023] The intelligent head includes a microprocessor, a tipping detection module, a motor valve driver, and a counter.

[0024] The temperature sensor in the base meter is connected to the microprocessor of the smart head.

[0025] The tipping detection module is connected to the microprocessor to detect the tilt angle of the gas meter.

[0026] The output of the counter is connected to the microprocessor, while the input of the counter is connected to the metering component in the base meter.

[0027] The input end of the motor valve driving module is connected to the microprocessor, and the output end of the motor valve driving module is connected to the built-in motor valve in the base meter.

[0028] Furthermore, the membrane 6 is a composite membrane 6, with nylon coated fabric 61 in the middle and rubber layers on both sides. The rubber layer is nitrile rubber 62. The nylon coated fabric 61 is composited with two layers of nitrile rubber 62 to form the membrane 6, which greatly improves the physical and chemical properties of the membrane 6, such as fatigue resistance, wear resistance, corrosion resistance, tensile strength, and sensitivity.

[0029] Furthermore, the membrane 6 is provided with an annular arc groove 601 , and the arc groove 601 is arranged on the inner side of the sealing rib 603 , and the arc groove 601 is located inside the metal sheet 7 .

[0030] Furthermore, the smart head also includes a NB-IoT module, which is connected to a microprocessor for remote transmission of gas meter data.

[0031] Furthermore, the rollover detection module includes a three-axis acceleration sensor.

[0032] Furthermore, the smart head also includes an LCD display and an RTC clock connected to the microprocessor, and the smart head includes a lithium-ion battery connected to a DC / DC module through an isolation module to power the devices and circuits in the smart head.

[0033] Furthermore, the smart head also includes a dry battery connected to the DC / DC module to power the devices and circuits in the smart head, the smart head includes a storage capacitor connected to the DC / DC module, and the smart head also includes a button connected to the microprocessor.

[0034] Working principle: The utility model provides a diaphragm 6 gas meter, which fixes the diaphragm 6 and the metal sheet 7 by setting a mounting hole 602, and sets a sealing rib 603 to be clamped on the side wall of the metal sheet 7, so that when the flow rate inside the gas meter increases or decreases, it is not easy to produce a gap between the diaphragm 6 and the metal sheet 7, thereby reducing the risk of leakage; the utility model sets an arc groove 601 on the diaphragm 6, when the working diaphragm 6 of the gas meter moves and produces deformation, the setting of the arc groove 601 improves the deformation ability of the diaphragm 6, and improves the stability and service life of the diaphragm 6.

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

Claims

1. A diaphragm gas meter with anti-tilt detection, characterized in that: The invention comprises a base meter and an intelligent head, wherein the base meter comprises a metering component, a built-in motor valve and a temperature sensor, wherein the metering component adopts a reciprocating slide valve structure, wherein the reciprocating slide valve structure comprises a valve cover (1), a valve seat (2) and a slide rail (3), wherein the valve cover (1) and the valve seat (2) are precisely combined, wherein the slide rail (3) is installed at the center of the connecting surface between the valve seat (2) and the valve cover (1), wherein a gas meter body is installed at the bottom of the valve seat (2), wherein the body is an air chamber formed by two membranes (6), wherein one side of the membrane (6) is fixedly connected to a metal sheet (7), wherein a ring-shaped sealing rib (603) is arranged on a side of the membrane (6) close to the metal sheet (7), wherein a plug-in groove (702) is arranged on the metal sheet (7) at a position corresponding to the sealing rib (603), wherein a plurality of mounting holes (602) are equidistantly arranged on the surface of the membrane (6), wherein the mounting holes (602) are arranged on the sealing rib (603) and the mounting holes (602) are arranged on the sealing rib (603). ), a fixing hole (701) is provided on the metal sheet (7) corresponding to the mounting hole (602), and screws are provided in the corresponding mounting hole (602) and the fixing hole (701) to fix the membrane (6); an outlet pipe (4) is provided on the upper end of the valve cover (1), one end of a transmission connecting rod (5) is installed on the outlet pipe (4), and the other end of the transmission connecting rod (5) is provided on the upper end of the valve seat (2); the intelligent head includes a microprocessor, a tipping detection module, a motor valve drive, and a counter, the temperature sensor in the base meter is connected to the microprocessor of the intelligent head, the tipping detection module is connected to the microprocessor for detecting the tilt angle of the gas meter, the output end of the counter is connected to the microprocessor, and the input end of the counter is connected to the metering component in the base meter, the input end of the motor valve drive module is connected to the microprocessor, and the output end of the motor valve drive module is connected to the built-in motor valve in the base meter.

2. A diaphragm gas meter with anti-tilt detection according to claim 1, characterized in that: The membrane (6) is a composite membrane (6), with a nylon coated fabric (61) in the middle and rubber layers on both sides, wherein the rubber layers are nitrile rubber (62).

3. A diaphragm gas meter with anti-tilt detection according to claim 1, characterized in that: The membrane (6) is provided with an annular arc groove (601), and the arc groove (601) is arranged on the inner side of the sealing rib (603), and the arc groove (601) is located inside the metal sheet (7).

4. A diaphragm gas meter with anti-tilt detection according to claim 1, characterized in that: The smart head also includes a NB-IoT module, which is connected to a microprocessor for remote transmission of gas meter data.

5. A diaphragm gas meter with anti-tilt detection according to claim 1, characterized in that: The tipping detection module includes a three-axis acceleration sensor.

6. A diaphragm gas meter with anti-tilt detection according to claim 1, characterized in that: The smart head also includes an LCD display and an RTC clock connected to the microprocessor. The smart head includes a lithium-ion battery connected to a DC / DC module through an isolation module to power the devices and circuits in the smart head.

7. A diaphragm gas meter with anti-tilt detection according to claim 6, characterized in that: The smart head also includes a dry battery connected to the DC / DC module to power the devices and circuits in the smart head, the smart head includes a storage capacitor connected to the DC / DC module, and the smart head also includes a button connected to the microprocessor.

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