Automatic control valve in full-sealed inner gear ring transmission gas meter

Abstract

The utility model discloses an automatic control valve in a full-sealed inner gear ring transmission gas meter, which relates to the field of gas meter control valves, and comprises a first sealing element, a control element, a valve rod, a mounting chamber and a second sealing element, the first sealing element is used for sealing between a gas inlet of a gas meter joint and a gas outlet of a gas pipeline; the position of the first sealing piece is controlled through the control piece, whether ventilation between the gas inlet of the gas meter connector and the gas outlet of the gas pipeline is controlled or not is controlled, sealing of the opening of the gas meter connector is achieved through the second sealing piece, a gas path in a gas meter can be cut off, corrosion gas invasion can be resisted, and the service life of the gas meter connector is prolonged. Corrosive gas cannot enter the mounting chamber in some extreme and severe gas environments, and safe and stable operation of the valve can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of gas meter control valves, in particular to an automatic control valve inside a gas meter with a fully sealed internal gear ring drive. Background Art

[0002] In a traditional gas meter, there is only a gas consumption billing device inside, and there is no automatic control valve inside the meter. When it is necessary to control the gas meter of on-site users, the gas path cannot be cut off in time. In addition, the quality of the gas produced by gas fields in various provinces and cities across the country is not the same. Some combustible gases contain corrosive elements, which will corrode the metal substances inside the gas meter, leaving a major hidden danger to gas safety. In a traditional gas meter, there is only a gas consumption billing device inside, and there is no valve device for automatically controlling the closing of the pipeline; the quality of the natural gas produced by the gas field cannot absolutely meet the national standards, and it will contain corrosive elements, which will erode the built-in automatic valve electrical device. Content of the Utility Model

[0003] The purpose of the utility model is to design an automatic control valve inside a gas meter with a fully sealed internal gear ring drive to solve the above problems.

[0004] The utility model realizes the above purpose through the following technical solutions:

[0005] The automatic control valve inside the gas meter with a fully sealed internal gear ring drive includes:

[0006] A first seal; the first seal is used for sealing between the air inlet of the gas meter joint and the air outlet of the gas pipeline.

[0007] A valve stem; the first seal is installed at the first end of the valve stem.

[0008] A control member; the control member is used for controlling whether the first seal seals between the gas meter joint and the gas pipeline by controlling the movement of the valve stem.

[0009] An installation chamber; the control member is installed in the installation chamber. The installation chamber is fixedly installed at the opening of the gas meter joint. An installation hole is provided at the first end of the installation chamber. The first end of the valve stem passes through the installation hole, and the second end of the valve stem is movably installed in the installation chamber.

[0010] A second seal; the second seal is used for sealing inside between the installation hole of the installation chamber and the valve stem.

[0011] A pressure detection module; the pressure detection module is used for detecting the air pressure inside the installation chamber.

[0012] The beneficial effects of the present utility model are as follows: By controlling the position of the first sealing member through a control member, the ventilation between the air inlet of the gas meter joint and the air outlet of the gas pipeline is controlled, and the sealing at the opening of the gas meter joint is achieved through the second sealing member. This can not only cut off the gas path inside the gas meter but also resist the intrusion of corrosive gases, enabling the corrosive gases not to enter the installation chamber in some extreme and slightly harsh gas environments, and ensuring the safe and stable operation of the valve. Brief Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of an automatic control valve inside a fully sealed internal gear ring drive gas meter of the present utility model;

[0014] Figure 2 It is a schematic internal structural diagram of an automatic control valve inside a fully sealed internal gear ring drive gas meter of the present utility model;

[0015] Among them, the corresponding reference numerals are:

[0016] 1 - Gas meter joint, 2 - Air inlet, 3 - Sealing convex ring, 4 - Installation chamber, 5 - Opening, 6 - Fixed step, 7 - Step sealing ring groove, 8 - Second sealing rubber sleeve, 9 - Valve stem, 10 - Motor, 11 - Transmission rod, 12 - Limit block, 13 - Moving groove, 14 - First sealing rubber sleeve, 15 - Air pressure detection module, 16 - Gas meter housing wire passing hole plugging block, 17 - Motor control wire, 18 - Driving wheel, 19 - Driven wheel. Detailed Embodiment

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0019] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is customarily placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0021] In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0022] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, terms such as "set", "connect", etc. should be understood in a broad sense. For example, "connect" 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 an indirect connection through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] The following will describe in detail the specific embodiments of the present utility model with reference to the drawings.

[0024] As Figure 1 、 Figure 2 shown, the automatic control valve inside the fully sealed internal gear ring drive gas meter includes:

[0025] A first seal; the first seal is used for sealing between the air inlet 2 of the gas meter joint 1 and the air outlet of the gas pipeline.

[0026] A valve stem 9; the first seal is installed at the first end of the valve stem 9.

[0027] A control member; the control member is used for controlling whether the first seal seals between the gas meter joint 1 and the gas pipeline by controlling the movement of the valve stem 9.

[0028] An installation chamber 4; the control member is installed inside the installation chamber 4, the installation chamber 4 is fixedly installed at the opening 5 of the gas meter joint 1, the first end of the installation chamber 4 is provided with an installation hole, the first end of the valve stem 9 passes through the installation hole, and the second end of the valve stem 9 is movably installed inside the installation chamber 4.

[0029] A second seal; the second seal is used for sealing inside between the installation hole of the installation chamber 4 and the valve stem 9.

[0030] Air pressure detection module; the air pressure detection module is used to detect the air pressure in the installation room, realize the airtight self-inspection design. After the self-airtight detection is qualified, the internal space is completely sealed and can resist the intrusion of corrosion.

[0031] The first seal is the first sealing rubber sleeve 14. The first sealing rubber sleeve 14 is sleeved on the first end of the valve stem 9. When blocking the gas flow between the air inlet 2 of the gas meter joint 1 and the air outlet of the gas pipeline, the first sealing rubber sleeve 14 is in extrusion contact with the air inlet 2 of the gas meter joint 1; when there is gas flow between the air inlet 2 of the gas meter joint 1 and the air outlet of the gas pipeline, the first sealing rubber sleeve 14 is separated from the air inlet 2 of the gas meter joint 1.

[0032] The control member includes a motor 10 and a transmission rod 11. The motor 10 is used to drive the transmission rod 11 to rotate. The outer side wall of the transmission rod 11 is provided with threads, and the second end of the valve stem 9 is provided with a threaded hole. The transmission rod 11 is threadedly connected to the threaded hole of the valve stem 9. The inner side wall of the first sealing rubber sleeve 14 is provided with a sealing convex ring 3. The sealing convex ring 3 is in extrusion contact with the outer side wall of the first end of the valve stem 9. A limiting member is arranged in the gas meter joint 1. The limiting member is used to limit the relative rotation between the valve stem 9 and the gas meter joint 1. The motor 10 can be remotely controlled.

[0033] The limiting member includes at least one limiting sub-member. Each limiting sub-member includes a limiting block 12 and a moving groove 13. The first end of the limiting block 12 is fixedly installed at the first end of the valve stem 9. The limiting block 12 is located inside the first sealing rubber sleeve 14. The moving groove 13 is arranged on the inner side wall of the gas meter joint 1. The second end of the limiting block 12 is movably installed in the moving groove 13. The first sealing rubber sleeve 14 is in extrusion contact with the limiting groove.

[0034] The control member further includes a driving wheel 18 and a driven wheel 19. The rotation center of the driving wheel 18 is fixedly connected to the rotating shaft of the motor 10. The driving wheel 18 and the driven wheel 19 are in meshing transmission. The transmission rod 11 is fixedly connected to the rotation center of the driven wheel 19.

[0035] The automatic control valve further includes a fixed step 6. The fixed step 6 has at least two steps. The fixed step 6 is arranged on the installation chamber 4. A step sealing ring groove 7 is formed between the fixed step 6 and the opening 5 of the gas meter joint 1. The second seal is the second sealing rubber sleeve 8. The second sealing rubber sleeve 8 is installed in the step sealing ring groove 7. The upper side and the lower side of the second sealing rubber sleeve 8 are respectively in extrusion contact with the opening 5 of the gas meter joint 1 and the fixed step 6. The inner side wall of the sealing ring is always in extrusion contact with the outer side wall of the valve stem 9.

[0036] The automatic control valve includes an air pressure detection module 15. The air pressure detection module 15 is used to detect the air pressure in the installation chamber 4, realize the airtight self-inspection design. After the self-airtight detection is qualified, the internal space is completely sealed and can resist the intrusion of corrosion.

[0037] The working principle of the automatic control valve inside the fully sealed internal gear ring drive gas meter of the utility model is as follows:

[0038] When opening the valve, the motor 10 starts and drives the transmission rod 11 to rotate through gear transmission. Under the action of the transmission rod 11, the limit block 12 and the moving groove 13, the valve rod 9 converts the rotation into a linear movement. Therefore, the valve rod 9 drives the first sealing rubber sleeve 14 away from the air inlet 2 of the gas meter joint 1, so that the air inlet 2 of the gas meter joint 1 is communicated with the air outlet of the gas pipeline, achieving the purpose of opening the gas pipeline;

[0039] When closing the valve, the motor 10 starts and drives the transmission rod 11 to rotate in the reverse direction through gear transmission. Under the action of the transmission rod 11, the limit block 12 and the moving groove 13, the valve rod 9 converts the rotation into a linear movement. Therefore, the valve rod 9 drives the first sealing rubber sleeve 14 close to the air inlet 2 of the gas meter joint 1 until the first sealing rubber sleeve 14 is in extrusion contact with the air inlet 2 of the gas meter joint 1, blocking the communication between the air inlet 2 of the gas meter joint 1 and the air outlet of the gas pipeline, achieving the purpose of closing the gas pipeline.

[0040] This automatic control valve is installed inside the gas meter, enabling it to automatically cut off and open the gas supply of the pipeline. It adopts a transmission form that uses gear transmission to drive the transmission rod 11 to drive the first sealing rubber sleeve 14. The characteristics of this transmission structure are large transmission ratio, compact structure, simple and convenient electric control logic, and it can be applied to the basic meters produced by many different gas meters. Installing it at the gas inlet inside the basic meter can easily achieve the purpose of remotely and automatically controlling the opening and closing of the gas pipeline; all the spaces of this automatic control valve connected to the electrical device are reliably sealed. In some extreme and slightly harsh gas environments, corrosive gases can be prevented from entering the valve interior, ensuring the safe and stable operation of the valve.

Claims

1. Fully sealed internal gear ring transmission gas meter internal automatic control valve, characterized in that: include: a first seal; The first sealing member is used for sealing between the gas inlet of the gas meter joint and the gas outlet of the gas pipeline; The valve stem; a first sealing member is mounted on a first end of the valve stem; Control member; the control member is used to control whether the first sealing member seals the gas meter joint and the gas pipeline by controlling the movement of the valve stem; Installation chamber; the control element is installed in the installation chamber, the installation chamber is fixedly installed at the opening of the gas meter joint, a first end of the installation chamber is provided with an installation hole, a first end of the valve stem passes through the installation hole, and a second end of the valve stem is movably installed in the installation chamber; The second sealing member is used for sealing between the mounting hole of the mounting chamber and the valve stem; Air pressure detection module: The air pressure detection module is used to detect the air pressure in the installation room.

2. The fully sealed internal gear ring transmission gas meter automatic control valve according to claim 1, characterized in that: The first sealing component is a first sealing rubber sleeve, which is sleeved on the first end of the valve stem. When the gas flow between the air inlet of the gas meter connector and the air outlet of the gas pipeline is blocked, the first sealing rubber sleeve is squeezed and contacted with the air inlet of the gas meter connector; when the gas flows between the air inlet of the gas meter connector and the air outlet of the gas pipeline, the first sealing rubber sleeve is separated from the air inlet of the gas meter connector.

3. The fully sealed internal gear ring transmission gas meter automatic control valve according to claim 2, characterized in that: The control component includes a motor and a transmission rod. The motor is used to drive the transmission rod to rotate. The outer wall of the transmission rod is provided with a thread. The second end of the valve stem is provided with a threaded hole. The transmission rod is threadedly connected to the threaded hole of the valve stem. The inner wall of the first sealing rubber sleeve is provided with a sealing convex ring. The sealing convex ring is in extrusion contact with the outer wall of the second end of the valve stem. A limit member is provided in the gas meter joint. The limit member is used to limit the relative rotation of the valve stem relative to the gas meter joint.

4. The fully sealed internal gear ring transmission gas meter automatic control valve according to claim 3, characterized in that: The limiting component includes at least one limiting sub-component, each limiting sub-component includes a limiting block and a movable groove, the first end of the limiting block is fixedly installed on the first end of the valve stem, the limiting block is located in the first sealing rubber sleeve, the movable groove is arranged on the inner side wall of the gas meter joint, the second end of the limiting block is movably installed in the movable groove, and the first sealing rubber sleeve is in extrusion contact with the limiting groove.

5. The fully sealed internal gear ring transmission gas meter automatic control valve according to claim 3, characterized in that: The control component also includes a driving wheel and a driven wheel. The rotation center of the driving wheel is fixedly connected to the rotating shaft of the motor. The driving wheel and the driven wheel are meshed for transmission. The transmission rod is fixedly connected to the rotation center of the driven wheel.

6. The fully sealed internal gear ring transmission gas meter automatic control valve according to claim 1, characterized in that: The automatic control valve also includes a fixed step, which has at least two steps. The fixed step is arranged on the installation chamber, and a step sealing ring groove is formed between the fixed step and the opening of the gas meter connector. The second sealing component is a second sealing rubber sleeve, which is installed in the step sealing ring groove. The upper side and lower side of the second sealing rubber sleeve are respectively squeezed in contact with the opening of the gas meter connector and the fixed step, and the inner side wall of the sealing ring is always squeezed in contact with the outer side wall of the valve stem.

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