Gas meter

Abstract

The utility model belongs to the technical field of gas meters, and particularly relates to a gas meter which comprises a shell, a gas inlet, a gas outlet, a gas inlet and a gas outlet. The meter connector is arranged at the fuel gas overflowing opening; the valve assembly comprises a valve frame, the valve frame is arranged in the shell and is opposite to the meter connector, and the valve assembly comprises a limiting part; and the anti-gas-theft structure is arranged in the shell and located between the meter connector and the valve assembly, and the anti-gas-theft structure is matched with the limiting part. The anti-gas-theft structure in the gas meter is not easy to take out through the meter connector, has a good anti-gas-theft effect, and ensures the accuracy of gas metering.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas meters, and in particular relates to a gas meter. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] The existing gas meter structure has a meter joint that is directly connected to the movement inside the meter through a valve, and has poor anti-gas theft performance. It is unable to prevent someone from damaging the internal structure of the gas meter from the air inlet joint or the air outlet joint, which may cause leakage inside the gas meter, affecting the gas company's charges. In addition, impurities and foreign objects may easily fall into the meter after the meter is damaged, affecting its use.

[0004] In the related art, an anti-theft gas structure is provided on the meter joint of the gas meter. The anti-theft gas structure cooperates with the meter joint to limit its position on the inner wall of the meter joint to prevent someone from damaging the internal structure of the gas meter. However, the anti-theft gas structure is directly installed in the meter joint. The anti-theft gas structure can be easily removed through the meter joint with tools, resulting in low safety performance and poor protection. Utility Model Content

[0005] The purpose of the utility model is to at least solve the problem that the anti-theft gas structure is easily taken out through the surface joint. This purpose is achieved through the following technical solutions:

[0006] A first aspect of the utility model provides a gas meter, the gas meter comprising:

[0007] A shell having a gas flow opening;

[0008] A meter joint, arranged at the gas flow port;

[0009] A valve assembly, comprising a valve frame, wherein the valve frame is arranged in the housing and is arranged opposite to the meter joint, and the valve frame comprises a limiting portion;

[0010] The anti-theft gas structure is arranged in the housing and located between the meter joint and the valve assembly, and the anti-theft gas structure cooperates with the limiting part.

[0011] According to the gas meter of the utility model, by arranging the anti-gas theft structure between the meter joint and the valve assembly, and arranging a limit portion on the anti-gas theft structure to limit the movement of the anti-gas theft structure in the axial direction of the meter joint, the anti-gas theft structure is not easy to be taken out through the meter joint, and has a better anti-gas theft effect, thereby ensuring the accuracy of gas metering.

[0012] In addition, the gas meter according to the utility model may also have the following additional technical features:

[0013] In some embodiments of the present invention, the valve frame includes a cavity and a vent end connected to the cavity, the vent end is opposite to the meter joint, and the limiting portion includes a limiting step, and the limiting step is arranged on the inner wall surface of the vent end.

[0014] In some embodiments of the utility model, the anti-theft gas structure includes a main body component, the main body component includes a first end and a second end along the axial direction of the meter joint, the first end extends into the ventilation end and cooperates with the limiting step, and the inner wall surface of the ventilation end is interference fit with the main body component.

[0015] In some embodiments of the present invention, a boss is provided at the second end, and the boss is overlapped on the ventilation end.

[0016] In some embodiments of the present invention, the main body component is located inside the ventilation end, and the ventilation end and the main body component are interference fit.

[0017] In some embodiments of the present invention, there are multiple convex ribs, and the multiple convex ribs are arranged at intervals along the circumference of the main body component, and the convex ribs are inclined from the first end to a direction away from the second end.

[0018] In some embodiments of the present invention, the main body component is cylindrical, and the boss is formed by extending outwardly in a radial direction from one end of the main body component close to the meter joint.

[0019] In some embodiments of the present invention, the inner wall surface of the ventilation end is interference fit with the main body component.

[0020] In some embodiments of the utility model, the anti-theft gas structure includes a filter portion, the filter portion is located at an end of the main component away from the meter connector, and the filter portion includes a plurality of filter holes;

[0021] The filter portion includes a frame and at least one supporting rib connected to the frame, and the plurality of filter holes are located on both sides of each of the supporting ribs.

[0022] In some embodiments of the present invention, the surface connector abuts against the main body component.

[0023] In some embodiments of the utility model, the gas meter includes a sealing sleeve, which is arranged inside the shell. Along the axial direction of the meter joint, the meter joint includes a first pipe section and a second pipe section, the first pipe section is located outside the shell, the second pipe section is located inside the shell, the second pipe section and the vent end are located in the sleeve, a first sealing ring is arranged between the vent end and the sleeve, and a second sealing ring is arranged between the first pipe section and the gas flow port.

[0024] In some embodiments of the utility model, a limiting groove is provided at one end of the second pipe section close to the anti-theft gas structure, and the edges around the gas flow port extend toward the inside of the shell to form a limiting ring, which cooperates with the limiting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0026] Figure 1 The structure of a gas meter according to an embodiment of the utility model is schematically shown.

[0027] Figure 2 The figure schematically shows a top view of a gas meter according to an embodiment of the present utility model.

[0028] Figure 3 Schematically shows Figure 2 Partial cross-section along AA direction.

[0029] Figure 4 An enlarged view of point A of a gas meter according to an embodiment of the present utility model is schematically shown.

[0030] Figure 5 The anti-gas theft structure diagram of the gas meter according to the embodiment of the utility model is schematically shown.

[0031] The reference numerals are as follows:

[0032] 1. Shell; 11. Gas flow port; 12. Ring; 2. Gauge joint; 21. First pipe section; 22. Second pipe section; 211. Second groove; 221. Limiting groove; 3. Valve frame; 31. Ventilation end; 32. Cavity; 33. Limiting part; 311. First groove; 4. Anti-theft gas structure; 41. Main body; 42. Boss; 411. Second rib; 401. First end; 402. Second end; 43. Filter part; 431. Filter hole; 432. Support rib; 433. Frame; 5. Sleeve; 6. First sealing ring; 7. Second sealing ring. DETAILED DESCRIPTION

[0033] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0034] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0035] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0036] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0037] The technical solution of this embodiment is described in detail below in conjunction with the accompanying drawings. The following embodiments and examples can be combined with each other if there is no conflict.

[0038] According to the implementation mode of the present utility model, Figure 1-Figure 4 As shown, a gas meter is proposed, and the gas meter is, for example, a diaphragm gas meter. The gas meter includes a shell 1, a meter joint 2 and a valve assembly. A housing space is formed inside the shell 1, and a gas flow port 11 is provided on the shell 1. The gas flow port 11 is, for example, a gas inlet or a gas outlet. The meter joint 2 is arranged at the gas flow port 11, and the meter joint 2 is used to connect an external gas pipeline with the gas outlet or the gas inlet of the gas meter. An external thread is also provided at one end of the meter joint 2 for matching with the external gas pipeline. The valve assembly is used to control the gas to flow into or out of the shell 1. The valve assembly is, for example, a ball valve. The valve assembly includes a valve frame 3, and the valve frame 3 is arranged in the housing space of the shell 1 and is arranged opposite to the meter joint 2, and the valve frame 3 includes a limit portion 33. The gas meter also includes an anti-theft gas structure 4, which is arranged in the shell 1 and located between the meter joint 2 and the valve frame 3. The anti-theft gas structure 4 is used to prevent someone from extending tools from the meter joint 2 into the shell 1 and damaging the structure inside the shell 1, thereby affecting the gas metering device in the gas meter to measure the gas. The anti-theft gas structure 4 cooperates with the limit portion 33.

[0039] In this embodiment, the meter joint 2 is located in the first direction of the anti-theft gas structure 4, so that the anti-theft gas structure 4 is limited in the first direction of the axial direction of the meter joint 2, and the first direction is the direction toward the gas flow port 11. When the anti-theft gas structure 4 is taken out, it will be blocked by the meter joint 2, so that the anti-theft gas structure 4 is not easy to be taken out from the meter joint 2. The limiting portion 33 cooperates with the anti-theft gas structure 4 to limit the anti-theft gas structure 4 in the second direction of the axial direction of the meter joint 2, and the second direction is the direction away from the gas flow port 11, so as to prevent the anti-theft gas structure 4 from falling into the ventilation end 31 and affecting the control effect of the valve assembly on the gas.

[0040] This embodiment has a good anti-gas theft effect by arranging the anti-gas theft structure 4 between the meter joint 2 and the valve frame 3, and arranging a limit portion 33 on the anti-gas theft structure 4 to limit the movement of the anti-gas theft structure 4 in the axial direction of the meter joint 2. The anti-gas theft structure 4 cannot be removed from the meter joint 2, thereby effectively ensuring the accuracy of gas measurement of the gas meter.

[0041] This embodiment does not limit the structure of the limiting portion 33. In an example (not shown in the example figure), along the axial direction of the gauge connector 2, the anti-theft gas structure 4 includes a main body component 41, and a plurality of limiting buckles are arranged on the main body component 41. The limiting portion 33 includes a plurality of limiting slots, and the limiting buckles correspond to the limiting slots one by one. The limiting buckles cooperate with the limiting slots, thereby realizing the limiting of the anti-theft gas structure 4 in the first direction of the axial direction of the gauge connector 2.

[0042] In one example, refer to Figure 3 and Figure 4 The valve frame 3 includes a cavity 32 and a vent end 31 connected to the cavity 32. The vent end 31 is provided with a first vent, and the first vent end 31 is arranged opposite to the gauge joint 2. The first vent is used to connect the cavity 32 with the gauge joint 2. The cavity 32 also has at least one second vent, and the second vent connects the cavity 32 with the inside of the shell 1. The anti-theft gas structure 4 is arranged between the gauge joint 2 and the vent end 31. The limiting portion 33 includes a limiting step, and the limiting step is arranged on the inner wall surface of the first vent end 31. At least part of the structure of the anti-theft gas structure 4 is located in the vent end 31 and cooperates with the limiting step, thereby ensuring the assembly reliability of the anti-theft gas structure 4 and the valve frame 3, and also limiting the anti-theft gas structure 4 in the second axial direction of the gauge joint 2. At the same time, the anti-theft gas structure 4 realizes a detachable connection with the vent end 31 through the limiting portion 33, which is convenient for the maintenance of the anti-theft gas structure 4.

[0043] In one example, refer to Figure 3 and Figure 4The anti-theft gas structure 4 includes a main body component 41, and the main body component 41 includes a first end 401 and a second end 402 along the axial direction of the meter joint 2. The first end 401 cooperates with the limiting step, thereby realizing the axial limitation of the anti-theft gas structure 4 in the meter joint 2. Preferably, the outer edge of the main body component 41 is in contact with the inner wall surface of the ventilation end 31.

[0044] In some embodiments, reference Figure 3 and Figure 4 , a boss 42 is provided at the second end 402, and the boss 42 overlaps the venting end 31. The boss 42 can be a circle arranged on the circumference of the main body part 41, or a plurality of bosses 42 can be arranged at intervals along the circumference of the main body part 41. The boss 42 can be integrally formed with the main body part 41, or can be arranged independently of the main body part 41 and arranged on the main body part 41 in a manner of snap-fitting, plug-in connection or connection with a connector. The boss 42 overlaps the venting end 31, thereby ensuring the assembly reliability between the anti-theft gas structure 4 and the valve frame 3.

[0045] The structure of the main body part 41 is not limited, as long as it is compatible with the size of the first vent of the vent terminal 31. For example, the main body part 41 is cylindrical, and one end of the main body part 41 close to the meter connector 2 extends outward in the radial direction to form a boss 42. The step structure of the main body part 41 overlaps the vent terminal 31, and the other parts of the main body part 41 are in contact with the inner wall surface of the vent terminal 31.

[0046] In some embodiments, reference Figure 3 and Figure 4 , the main body part 41 is located inside the ventilation end 31, and the inner wall surface of the ventilation end 31 is interference fit with the main body part 41, so as to improve the airtightness effect between the anti-theft gas structure 4 and the valve frame 3, and improve the fixing effect of the anti-theft gas structure 4, and increase the difficulty of removing the anti-theft gas structure 4. In this embodiment, the interference fit between the ventilation end 31 and the main body part 41 can be achieved by setting the size of the main body part 41 larger than the size of the ventilation end 31, and the interference fit between the ventilation end 31 and the main body part 41 can also be achieved by setting a first rib (not shown in the figure) on the inner wall surface of the ventilation end 31, and the interference fit between the inner wall surface of the ventilation end 31 and the main body part 41 can also be achieved by setting a second rib 411 on the outer edge of the main body part 41. In one example (not shown in the figure of this example), at least one second rib 411 is set on the outer edge of the main body part 41, and the second rib 411 extends circumferentially along the outer edge of the main body part 41. In another example, referring to Figure 5A plurality of second ribs 411 are arranged on the outer edge of the main body part 41, and the second ribs 411 are arranged at intervals along the circumferential direction of the main body part 41. The second ribs 411 extend along the height direction of the main body part 41, and the second ribs 411 are inclined from the first end 401 to the direction away from the second end 402, which ensures the interference fit between the main body part 41 and the inner wall surface of the venting end 31 on the one hand, and facilitates the insertion of the first end 401 into the interior of the venting end 31 on the other hand. The height of the second rib 411 is, for example, 0.2 to 0.3 mm. Exemplarily, the second rib 411 is a wedge-shaped rib.

[0047] In some embodiments, reference Figure 5 The anti-theft gas structure 4 includes a filter 43, which is used to prevent external impurities from falling into the shell 1. The filter 43 is located at one end of the main body 41 away from the meter connector 2, and the filter 43 includes a plurality of filter holes 431. The plurality of filter holes 431 not only filter impurities but also have a rectifying effect on the gas flow, so that the metering device in the shell 1 can accurately measure the gas.

[0048] In some embodiments, reference Figure 5 , the filter part 43 includes a frame 433 and at least one supporting rib 432 connected to the frame 433, and a plurality of filter holes 431 are located on both sides of each supporting rib 432. In one example, the frame 433 is annular, and both ends of each supporting rib 432 are connected to the frame 433. The supporting rib 432 is used to enhance the strength of the filter part 43 to prevent the filter part 43 from being damaged by the gas flow under a larger gas flow. If there is one supporting rib 432, the plurality of filter holes 431 are located on both sides of one supporting rib 432. If there are multiple supporting ribs 432, the multiple supporting ribs 432 are arranged crosswise with each other, and the plurality of filter holes 431 are evenly arranged on both sides of each supporting rib 432. The cross-arranged multiple supporting ribs 432 further enhance the strength of the filter part 43, while occupying less area of ​​the filter holes 431 to avoid affecting the flow of the gas flow.

[0049] In this embodiment, the gauge connector 2 and the anti-theft gas structure 4 may be directly connected, or indirectly connected through other connectors, or a certain gap may be formed between the gauge connector 2 and the anti-theft gas structure 4. Figure 3 and Figure 4 The meter joint 2 abuts against the main part 41 of the anti-theft gas structure 4, thereby positioning the anti-theft gas structure 4 between the meter joint 2 and the valve frame 3, effectively preventing the anti-theft gas structure 4 from being skewed due to vibration during transportation of the gas meter.

[0050] In some embodiments, referring to Figure 4 and Figure 5The gas meter includes a sealing sleeve 5, which is arranged inside the shell 1. Along the axial direction of the meter joint 2, the meter joint 2 includes a first pipe section 21 and a second pipe section 22. The first pipe section 21 is located outside the shell 1, and an external thread is arranged on the outer periphery of the first pipe section 21. The second pipe section 22 is located inside the shell 1. The second pipe section 22 is used to cooperate with the valve frame 3 to fix the anti-theft gas structure 4. The anti-theft gas structure 4 is located between the second pipe section 22 and the ventilation end 31. The second pipe section 22 and the ventilation end 31 are located in the sleeve 5. A first sealing ring 6 is arranged between the ventilation end 31 and the sleeve 5, and a second sealing ring 7 is arranged between the first pipe section 21 and the shell 1. In one example, refer to Figure 5 The ventilation end 31 is provided with a first groove 311, and the first sealing ring 6 is accommodated in the first groove 311. The first sealing ring 6 and the sleeve 5 are interference-fitted to ensure the airtightness of the valve frame 3 and prevent the gas in the housing 1 from overflowing from between the sleeve 5 and the valve frame 3. In an example, referring to Figure 5 The second pipe section 22 is provided with a second groove 211, and the second sealing ring 7 is accommodated in the second groove 211. The second sealing ring 7 is interference-fitted with the gas flow port 11 to ensure the airtightness between the meter joint 2 and the gas flow port 11, and to prevent the gas in the housing 1 from overflowing from between the meter joint 2 and the housing 1. The first sealing ring 6 and the second sealing ring 7 are, for example, hollow rubber sealing rings, which have sufficient sealing performance and reduce production costs.

[0051] In some embodiments, referring to Figure 4 and Figure 5 A limiting groove 221 is set at one end of the second pipe section 22 close to the anti-theft gas structure 4, and the edges of the gas flow port 11 extend toward the inside of the shell 1 to form a limiting ring 12, which extends into the limiting groove 221. The limiting ring 12 cooperates with the limiting groove 221, which realizes the direct assembly of the shell 1 and the meter joint 2 on the one hand, and further realizes the sealing between the shell 1 and the meter joint 2 on the other hand, thereby improving the good air tightness and assembly reliability of the gas meter as a whole.

[0052] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A gas meter, characterized in that: The gas meter comprises: A shell having a gas flow opening; A meter joint, arranged at the gas flow port; A valve assembly, comprising a valve frame, wherein the valve frame is arranged in the housing and is arranged opposite to the meter joint, and the valve frame comprises a limiting portion; The anti-theft gas structure is arranged in the housing and located between the meter joint and the valve assembly, and the anti-theft gas structure cooperates with the limiting part.

2. The gas meter according to claim 1, characterized in that: The valve frame includes a cavity and a vent end connected to the cavity, the vent end is opposite to the meter joint, and the limiting portion includes a limiting step, and the limiting step is arranged on the inner wall surface of the vent end.

3. The gas meter according to claim 2, characterized in that: The anti-theft gas structure includes a main body component, which includes a first end and a second end along the axial direction of the meter joint, the first end extends into the ventilation end and cooperates with the limiting step, and the inner wall surface of the ventilation end is interference-fitted with the main body component.

4. The gas meter according to claim 3, characterized in that: The second end is provided with a boss, and the boss is overlapped on the ventilation end.

5. The gas meter according to claim 3, characterized in that: The outer edge of the main body component is provided with a convex rib, and the main body component is interference-fitted with the inner wall surface of the ventilation end through the convex rib.

6. The gas meter according to claim 5, characterized in that: There are a plurality of convex ribs, which are arranged at intervals along the circumference of the main body component, and the convex ribs are inclined from the first end toward a direction away from the second end.

7. The gas meter according to claim 3, characterized in that: The anti-theft gas structure comprises a filter portion, the filter portion is located at an end of the main component away from the meter joint, and the filter portion comprises a plurality of filter holes; The filter portion includes a frame and at least one supporting rib connected to the frame, and the plurality of filter holes are located on both sides of each of the supporting ribs.

8. The gas meter according to claim 3, characterized in that: The meter connector is in contact with the main body component.

9. The gas meter according to any one of claims 2 to 8, characterized in that: The gas meter includes a sealing sleeve, which is arranged inside the shell. Along the axial direction of the meter joint, the meter joint includes a first pipe section and a second pipe section, the first pipe section is located outside the shell, the second pipe section is located inside the shell, the second pipe section and the vent end are located in the sleeve, a first sealing ring is arranged between the vent end and the sleeve, and a second sealing ring is arranged between the first pipe section and the gas flow port.

10. The gas meter according to claim 9, characterized in that: A limiting groove is arranged at one end of the second pipe section close to the anti-theft gas structure, and the edges around the gas flow port extend toward the inside of the shell to form a limiting ring, which cooperates with the limiting groove.

Images