Gas meter pipe

Abstract

The utility model discloses a gas meter pipe, aims to provide a gas meter pipe which is good in sealing performance and higher in part strength, and adopts the technical scheme that the gas meter pipe comprises a pipe body, a joint and a nut, the pipe body and the joint are integrally formed, the nut is sleeved outside the joint, and the gas meter pipe is characterized in that an annular limiting piece is fixed on the surface of the joint, and the limiting piece is sleeved outside the joint. The limiting piece is configured to restrain the positions of the connector and the nut when the nut is connected with the gas meter, the limiting piece is provided with a gasket arranged outside the limiting piece in a sleeving mode, chamfers are arranged at the corner angles of the limiting piece and the nut, and the limiting piece is further provided with a magnetic ring used for attracting the nut to enable the nut to be tightly attached to the gasket. And the ratio of the thickness of the gasket to the thickness of the limiting piece is between 5 / 4 and 3 / 2. The utility model is suitable for the technical field of pipelines.

Description

Technical Field

[0001] This utility model relates to a gas meter pipe, and more specifically, it relates to a gas meter pipe with good sealing performance and high component strength. Background Technology

[0002] Gas meter pipes are a common type of pipe, often used in kitchens, bathrooms, and other places where gas is used for heating. These pipes are mostly used at the inlet and outlet of the gas meter to facilitate the flow of gas between the gas meter and external equipment.

[0003] Currently, gas meter pipes on the market are usually non-removable, and replacing them will damage the structure of the gas meter pipe. Some more common removable gas meter pipes usually have integrated internal components, which are prone to aging and brittle fracture after long-term use. For some gas pipes with non-integrated components, there will be problems with insufficient sealing. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a gas meter pipe with good sealing performance and high component strength.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gas meter pipe, comprising a pipe body, a connector, and a nut, wherein the pipe body and the connector are integrally formed, the nut is sleeved on the outside of the connector, and an annular limiting member is fixed on the surface of the connector. The limiting member is configured to constrain the position of the connector and the nut when the nut is connected to the gas meter. A gasket is provided on the limiting member and sleeved on the limiting member. Chamfers are provided at the edges of both the limiting member and the nut. The limiting member is also provided with a magnetic ring for adsorbing the nut so that the nut and the gasket fit tightly together. The ratio of the thickness of the gasket to the thickness of the limiting member is between 5 / 4 and 3 / 2.

[0006] By adopting the above technical solution, the utility model gas meter pipe consists of a nut for connecting the gas meter, a pipe body, and a connector. The nut is fitted onto the connector and can move axially on the connector. An annular limiting member is provided on the upper surface of the connector to constrain its movement. When the gas meter pipe is connected to the gas meter, the limiting member abuts against the edge of the nut's threaded hole, achieving a seal. A gasket is also provided on the surface of the limiting member, enclosing it and thus replacing the limiting member in contact with the nut, enhancing the sealing effect. Simultaneously, a magnetic ring is provided on the limiting member, generating a magnetic attraction between the magnetic ring and the nut. This can further improve the sealing strength. Since the gasket is an elastic material, it is easily damaged after prolonged contact with the nut and the limiting component. Therefore, chamfers are provided at the edges of the limiting component and the nut to extend the gasket's life. The ratio of the gasket's thickness to the limiting component's thickness is also subject to certain limitations. When the ratio is too small, the gasket thickness is relatively small compared to the limiting component's thickness. The gasket between the nut and the limiting component is too thin, and the gasket is prone to slippage and damage during sealing. When the ratio is too large, the gasket between the nut and the limiting component will be too thick, resulting in less gasket deformation during contact and reducing its sealing effect.

[0007] The present invention is further configured such that: the nut has an internal thread, and the end of the tube body away from the joint has an external thread.

[0008] By adopting the above technical solution, the nut has an internal thread for connecting the gas meter pipe, and the pipe body has an external thread at the end away from the nut. The external thread is used to connect with the external gas inlet equipment. By designing different threads at different positions, the inlet and outlet ends of the pipe body can be distinguished to avoid incorrect installation.

[0009] The present invention is further configured such that the ratio of the inner diameter of the connector to the inner diameter of the nut is between 8 / 15 and 2 / 3.

[0010] By adopting the above technical solution, the ratio of the inner diameter of the connector to the inner diameter of the nut is controlled between 8 / 15 and 2 / 3. When the ratio is too small, the inner diameter of the connector is too small relative to the nut, resulting in low space utilization and reduced gas entry efficiency. When the ratio is too large, the gap between the nut and the connector will be too small, the space available for the limiting component will be smaller, resulting in insufficient length of the limiting component, which will lead to a small contact area between the gasket and the nut and insufficient sealing strength.

[0011] The present invention is further configured such that the tube body adopts a corrugated structure that allows the tube body to make irregular turns, expand, contract or deform due to heat.

[0012] By adopting the above technical solution, the pipe body uses a common corrugated structure, which makes the various parts of the pipe body highly flexible, the components are not easily damaged, and it can extend, retract and bend, making it more convenient to install and transport, while also being able to withstand a certain degree of deformation.

[0013] The present invention is further configured such that both the connector and the pipe body are made of carbon steel.

[0014] By adopting the above technical solution, carbon steel has the characteristics of high strength, high resistance to deformation and low cost. When using this material, gas meter pipes are not easily damaged, and mass production can be achieved due to its low cost.

[0015] The present invention is further configured such that: the outer surface of the pipe body and the connector is provided with a coating, the coating being made of heat-resistant and fire-resistant material.

[0016] By adopting the above technical solution, the fire-resistant and heat-resistant coating on the surface of the pipe body and the joint can further improve the high temperature resistance of the gas meter pipe. Since the pipe is used to contain gas, the place where the pipe is used is a potential fire site. The use of fire-resistant materials for the surface coating can prevent further spread of fire and improve the safety performance of the gas meter pipe. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the gas meter pipe of this utility model;

[0018] Figure 2 This is a perspective view of the gas meter pipe of this utility model;

[0019] The attached diagram is labeled as follows: 1. Pipe body; 2. Connector; 3. Nut; 4. Limiting element; 5. Washer; 6. Magnetic ring; 7. Internal thread; 8. External thread; Detailed Implementation

[0020] Reference Figures 1 to 2 The embodiments of the gas meter pipe of this utility model are further described below.

[0021] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0022] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0023] A gas meter pipe includes a pipe body 1, a connector 2, and a nut 3. The pipe body 1 and the connector 2 are integrally formed. The nut 3 is sleeved on the outside of the connector 2. An annular limiting member 4 is fixed on the surface of the connector 2. The limiting member 4 is configured to constrain the position of the connector 2 and the nut 3 when the nut 3 is connected to the gas meter. A gasket 5 is provided on the limiting member 4 and sleeved on the outside of the limiting member 4. Both the limiting member 4 and the nut 3 have chamfered edges. The limiting member 4 is also provided with a magnetic ring 6 for adsorbing the nut 3 so that the nut 3 and the gasket 5 fit tightly together. The ratio of the thickness of the gasket 5 to the thickness of the limiting member 4 is between 5 / 4 and 3 / 2. By adopting the above technical solution, the utility model gas meter pipe consists of a nut 3 for connecting the gas meter, a pipe body 1, and a connector 2. The nut 3 is sleeved on the connector 2 and can move axially on the connector 2. The upper surface of the connector 2 is provided with an annular limiting member 4, which is used to constrain the movement of the connector 2. When the gas meter pipe is connected to the gas meter, the limiting member 4 will abut against the edge of the screw hole of the nut 3 to achieve a seal. The surface of the limiting member 4 is also provided with a gasket 5, which wraps around the limiting member 4, thereby replacing the limiting member 4 in contact with the nut 3 and enhancing the sealing effect. At the same time, the limiting member 4 is also provided with a magnetic ring 6, and a magnetic attraction phenomenon will occur between the magnetic ring 6 and the nut 3. This can further improve the sealing strength. Since the gasket 5 is an elastic material, it is easy to be damaged after prolonged contact with the nut 3 and the limiting member 4. Therefore, the corners of the limiting member 4 and the nut 3 are chamfered to extend the life of the gasket 5. The ratio of the thickness of the gasket 5 to the thickness of the limiting member 4 is also subject to certain limitations. When the ratio is too small, the thickness of the gasket 5 is relatively small compared to the thickness of the limiting member 4. The gasket 5 between the nut 3 and the limiting member 4 is too thin, and the gasket 5 is easy to slip and be damaged during sealing. When the ratio is too large, the gasket 5 between the nut 3 and the limiting member 4 will be too thick. The deformation of the gasket 5 during contact will be small, which will reduce its sealing effect.

[0024] Furthermore, the nut 3 is provided with an internal thread 7, and the end of the pipe body 1 away from the connector 2 is provided with an external thread 8. By adopting the above technical solution, the internal thread 7 of the nut 3 is used to connect to the gas meter pipe, and the external thread 8 of the pipe body 1 away from the nut 3 is used to connect to the external gas inlet equipment. By using different thread designs at different positions, the inlet and outlet ends of the pipe body 1 can be distinguished, avoiding incorrect installation.

[0025] Furthermore, the ratio of the inner diameter of the connector 2 to the inner diameter of the nut 3 is between 8 / 15 and 2 / 3. By adopting the above technical solution, the ratio of the inner diameter of the connector 2 to the inner diameter of the nut 3 is controlled between 8 / 15 and 2 / 3. When this ratio is too small, the inner diameter of the connector 2 is too small relative to the nut 3, resulting in low space utilization and reduced gas entry efficiency. When this ratio is too large, the gap between the nut 3 and the connector 2 will be too small, reducing the space available for the limiting member 4 and causing insufficient length of the limiting member 4. This will result in an insufficient contact area between the gasket 5 and the nut 3, leading to insufficient sealing strength.

[0026] Furthermore, the tube body 1 adopts a corrugated structure that allows for irregular bends, expansion, contraction, or thermal deformation. By adopting the above technical solution, the tube body 1 uses a relatively common corrugated structure, which makes the various parts of the tube body 1 highly flexible, the components are not easily damaged, and it can expand, contract, and bend, making it more convenient for installation and transportation, while also being able to withstand a certain degree of deformation.

[0027] Furthermore, both the connector 2 and the pipe body 1 are made of carbon steel. By adopting the above technical solution, carbon steel has the characteristics of high strength, high resistance to deformation, and low cost. For gas meter pipes, it is not easy to be damaged when using this material, and its low cost also enables mass production.

[0028] Furthermore, the outer surfaces of the pipe body 1 and the connector 2 are coated with a heat-resistant and fire-retardant material. By adopting the above technical solution, the fire-resistant and heat-resistant coating on the surfaces of the pipe body 1 and the connector 2 further improves the high-temperature resistance of the gas meter pipe. Since this pipe is used to contain gas, the locations where it is used are susceptible to fire. Using a fire-retardant coating can prevent further spread of fire in the event of an ignition, thus improving the safety performance of the gas meter pipe. The above description is only a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution should be included within the protection scope of this utility model.

Claims

1. A gas meter pipe, comprising a pipe body (1), a connector (2), and a nut (3), wherein the pipe body (1) and the connector (2) are integrally formed, and the nut (3) is sleeved on the outside of the connector (2), characterized in that, The connector (2) has an annular limiting member (4) fixed on its surface. The limiting member (4) is configured to constrain the position of the connector (2) and the nut (3) when the nut (3) is connected to the gas meter. The limiting member (4) has a gasket (5) fitted outside the limiting member (4). The corners of the limiting member (4) and the nut (3) are chamfered. The limiting member (4) also has a magnetic ring (6) for adsorbing the nut (3) so that the nut (3) and the gasket (5) fit tightly together. The ratio of the thickness of the gasket (5) to the thickness of the limiting member (4) is between 5 / 4 and 3 / 2.

2. A gas meter pipe according to claim 1, characterized in that, The nut (3) is provided with an internal thread (7), and the end of the tube body (1) away from the joint (2) is provided with an external thread (8).

3. A gas meter pipe according to claim 1, characterized in that, The ratio of the inner diameter of the connector (2) to the inner diameter of the nut (3) is between 8 / 15 and 2 / 3.

4. A gas meter pipe according to claim 1, characterized in that, The tube (1) adopts a corrugated structure that allows the tube (1) to make irregular turns, expand, contract or deform due to heat.

5. A gas meter pipe according to claim 1, characterized in that, Both the connector (2) and the pipe body (1) are made of carbon steel.

6. A gas meter pipe according to claim 1, characterized in that, The outer surfaces of the pipe body (1) and the connector (2) are coated with a heat-resistant and fire-resistant material.

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