Natural gas pipeline valve with gas leakage detection function

Abstract

The natural gas pipeline valve with the gas leakage detection function comprises a pipeline valve body, the inlet end and the outlet end of the pipeline valve body are each provided with a natural gas pipeline and an extending assembly, and the inlet end and the outlet end of the pipeline valve body are each connected with an extending assembly and a connecting assembly; the natural gas pipelines are detachably connected with the extension assembly through the connecting assembly, the connecting assembly enables the pipeline valve body to be installed at the position between the two natural gas pipelines, and the gas leakage detection assembly is installed on the outer side of the connecting assembly. The device is convenient to install, a closed detection space can be rapidly formed on the outer side of the connecting assembly through the sealing liquid bag, when natural gas leakage occurs at the connecting assembly, natural gas enters the detection space, the natural gas detection instrument can detect the content of the natural gas in the detection space at the moment, and therefore whether the natural gas leaks or not is judged; the operation is convenient.

Description

Technical Field

[0001] The present application relates to the field of pipeline valves, and in particular to a natural gas pipeline valve with a gas leakage detection function. Background Art

[0002] Natural gas pipeline valves and gas valves, gas valves are a new type of safety supporting device for gas pipeline projects, which are used to cut off, connect and adjust the gas in the pipeline. They have good control characteristics and closing and sealing performance. They are suitable for city gas, liquefied petroleum gas, natural gas, oxygen and other gas medium pipelines. They are widely used in city gas supply network systems, such as coal gas, liquefied petroleum gas, natural gas, oxygen and other gas medium pipelines. The driving forms include manual, worm gear drive, electric, pneumatic, hydraulic, electro-hydraulic linkage and other actuators, which can realize remote control and automatic operation.

[0003] Since natural gas is a flammable gas and its content in the air reaches a certain level, it will cause people to suffer from hypoxia and is prone to explosion. Therefore, during the transportation and use of natural gas, especially during the transportation of gas in long-distance natural gas pipelines, natural gas leakage will have more serious consequences. At present, some natural gas pipeline valves have a leakage detection function, but this detection function generally detects the sealing of the valve body, and the connection between the valve and the natural gas pipeline is prone to leakage due to aging and other conditions, and there is a lack of leakage detection structure at this location, which affects the safety of natural gas transmission.

[0004] Therefore, it is desired to provide a natural gas pipeline valve with a gas leakage detection function, which can quickly detect gas leakage at the connection between the valve and the natural gas pipeline. Summary of the invention

[0005] In this embodiment, a natural gas pipeline valve with a gas leakage detection function is provided to solve the problem in the prior art that it is difficult to perform gas leakage detection at the connection between the valve and the natural gas pipeline.

[0006] According to one aspect of the present application, a natural gas pipeline valve with a gas leakage detection function is provided, comprising a pipeline valve body, wherein both inlet and outlet ends of the pipeline valve body are provided with natural gas pipelines;

[0007] Extension components, the inlet and outlet ends of the pipeline valve body are both connected with extension components;

[0008] A connection assembly, wherein the natural gas pipeline and the extension assembly are detachably connected via the connection assembly, wherein the connection assembly enables the pipeline valve body to be installed at a position between two natural gas pipelines, and the pipeline valve body connects the two natural gas pipelines and controls the connection and closure between the two natural gas pipelines;

[0009] An air leakage detection component is installed outside the connecting component and is used for performing air leakage detection on the extending component.

[0010] Furthermore, the pipeline valve body includes a valve body and a valve stem, wherein the valve stem is arranged on the upper side of the valve body, and the valve stem is used to control the opening and closing of the valve body.

[0011] Furthermore, the extension assembly is composed of a fixed tube, an extension tube and a mounting tube, one end of the fixed tube is connected to the pipeline valve body, a support assembly is arranged on the outside of the fixed tube, an end of the fixed tube away from the pipeline valve body is fixedly connected to the extension tube, an end of the extension tube away from the fixed tube is fixedly connected to the mounting tube, and an end of the mounting tube away from the extension tube is fixedly connected to the connecting assembly.

[0012] Furthermore, the inlet and outlet ends of the pipeline valve body are both fixedly connected with fixed pipes.

[0013] Furthermore, the connecting assembly consists of a first flange plate, a second flange plate and connecting bolts, one side of the first flange plate is fixedly connected to one end of the mounting pipe, the first flange plate and the second flange plate are connected by connecting bolts, and the side of the second flange plate away from the first flange plate is fixedly connected to one end of the natural gas pipeline.

[0014] Furthermore, a flange gasket is provided between the first flange plate and the second flange plate, and the first flange plate and the second flange plate are connected by a plurality of connecting bolts.

[0015] Furthermore, the gas leakage detection assembly is composed of a connecting shell, a sealing liquid capsule and a natural gas detection instrument. One side of the connecting shell is fixedly connected to the outer side of the first flange plate, the sealing liquid capsule is fixedly connected to the inner wall of the connecting shell, and the natural gas detection instrument is installed on the side of the connecting shell.

[0016] Furthermore, the side of the sealing liquid capsule away from the natural gas detection instrument is in contact with the second flange plate, and a flushing port is provided at the sealing liquid capsule, and the flushing port is connected to the connecting shell, and a sealed detection space is formed between the sealing liquid capsule, the connecting shell, the first flange plate and the second flange plate.

[0017] Furthermore, the natural gas detection instrument is installed on the outside of the connecting shell, and the detection end of the natural gas detection instrument extends into the detection space.

[0018] Furthermore, the support assembly is composed of a fixed ring, a sliding column, a support ring and a connecting column. The fixed ring is fixedly connected to the outside of the fixed tube, a plurality of sliding columns are fixedly connected to one side of the fixed ring, an end of the sliding column away from the fixed ring is fixedly connected to the outside of the connecting shell, the sliding column is connected through the support ring, a plurality of connecting columns are fixedly connected to the inside of the support ring, and an end of the connecting column away from the support ring is fixedly connected to the surface of the fixed tube.

[0019] Through the above-mentioned embodiments of the present application, the problem of difficulty in detecting gas leaks at the connection between the valve and the natural gas pipeline is solved. The gas leak detection component can be used to quickly detect gas leaks at the connection between the valve and the natural gas pipeline, thereby ensuring the safety of natural gas transportation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 This is an overall three-dimensional schematic diagram of an embodiment of the present application;

[0022] Figure 2 This is an overall internal schematic diagram of an embodiment of the present application;

[0023] Figure 3 For an embodiment of the present application Figure 2 A partial enlarged schematic diagram in the middle.

[0024] In the figure: 1. pipeline valve body; 11. valve body; 12. valve stem; 2. natural gas pipeline; 3. extension assembly; 31. fixing pipe; 32. extension pipe; 33. mounting pipe; 4. connection assembly; 41. first flange plate; 42. second flange plate; 43. connecting bolt; 5. leakage detection assembly; 51. connecting shell; 52. sealing liquid capsule; 53. natural gas detection instrument; 6. support assembly; 61. fixing ring; 62. sliding column; 63. support ring; 64. connecting column. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0028] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0029] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] See also Figure 1-3 As shown, a natural gas pipeline valve with a gas leakage detection function comprises a pipeline valve body 1, and natural gas pipelines 2 are arranged at both the inlet and outlet ends of the pipeline valve body 1;

[0032] Extension components 3, the inlet and outlet ends of the pipeline valve body 1 are both connected with extension components 3;

[0033] A connection assembly 4, wherein the natural gas pipeline 2 and the extension assembly 3 are detachably connected via the connection assembly 4, wherein the connection assembly 4 enables the pipeline valve body 1 to be installed at a position between two natural gas pipelines 2, and the pipeline valve body 1 connects the two natural gas pipelines 2 and controls the connection and closing between the two natural gas pipelines 2;

[0034] The air leakage detection component 5 is installed outside the connecting component 4 and is used for performing air leakage detection on the extending component 3 .

[0035] The pipeline valve body 1 includes a valve body 11 and a valve stem 12 . The valve stem 12 is disposed on the upper side of the valve body 11 . The valve stem 12 is used to control the opening and closing of the valve body 11 .

[0036] When in use, the sealing liquid capsule 52 can be used to quickly form a closed detection space outside the connecting component 4. When natural gas leaks at the connecting component 4, the natural gas enters the detection space. At this time, the natural gas detection instrument 53 can detect the content of natural gas in the detection space, thereby determining whether there is a natural gas leak. The operation is convenient.

[0037] The extension component 3 is composed of a fixed tube 31, an extension tube 32 and a mounting tube 33. One end of the fixed tube 31 is connected to the pipeline valve body 1. A support component 6 is arranged on the outside of the fixed tube 31. The end of the fixed tube 31 away from the pipeline valve body 1 is fixedly connected to the extension tube 32. The end of the extension tube 32 away from the fixed tube 31 is fixedly connected to the mounting tube 33. The end of the mounting tube 33 away from the extension tube 32 is fixedly connected to the connecting component 4. The inlet and outlet ends of the pipeline valve body 1 are both fixedly connected to the fixed tube 31.

[0038] The connecting assembly 4 is composed of a first flange plate 41, a second flange plate 42 and connecting bolts 43. One side of the first flange plate 41 is fixedly connected to one end of the mounting pipe 33. The first flange plate 41 and the second flange plate 42 are connected by connecting bolts 43. The side of the second flange plate 42 away from the first flange plate 41 is fixedly connected to one end of the natural gas pipeline 2.

[0039] A flange gasket is provided between the first flange plate 41 and the second flange plate 42 , and the flange gasket can ensure the sealing between the first flange plate 41 and the second flange plate 42 . The first flange plate 41 and the second flange plate 42 are connected by a plurality of connecting bolts 43 .

[0040] The gas leakage detection assembly 5 is composed of a connecting shell 51, a sealing liquid capsule 52 and a natural gas detection instrument 53. One side of the connecting shell 51 is fixedly connected to the outer side of the first flange plate 41, the sealing liquid capsule 52 is fixedly connected to the inner wall of the connecting shell 51, and the natural gas detection instrument 53 is installed on the side of the connecting shell 51.

[0041] The side of the sealing liquid capsule 52 away from the natural gas detection instrument 53 is in contact with the second flange plate 42. The sealing liquid capsule 52 is provided with a flushing port, and the flushing port is connected to the connecting shell 51. A sealed detection space is formed between the sealing liquid capsule 52, the connecting shell 51, the first flange plate 41 and the second flange plate 42.

[0042] The natural gas detection instrument 53 is installed outside the connecting shell 51, and the detection end of the natural gas detection instrument 53 extends into the detection space. The natural gas detection instrument 53 can detect the natural gas content in the detection space.

[0043] The support assembly 6 is composed of a fixing ring 61, a sliding column 62, a supporting ring 63 and a connecting column 64. The fixing ring 61 is fixedly connected to the outer side of the fixing tube 31. A plurality of sliding columns 62 are fixedly connected to one side of the fixing ring 61. The end of the sliding column 62 away from the fixing ring 61 is fixedly connected to the outer side of the connecting shell 51. The sliding column 62 is connected through the supporting ring 63. A plurality of connecting columns 64 are fixedly connected to the inner side of the supporting ring 63. The end of the connecting column 64 away from the supporting ring 63 is fixedly connected to the surface of the fixing tube 31. When the first flange plate 41 moves, the sliding column 62 can be driven to move in the same direction, thereby driving the fixing ring 61 to move in the same direction. At this time, the supporting ring 63 can support structures such as the sliding column 62 and the first flange plate 41, so that the first flange plate 41 will not sag due to the existence of the extension tube 32.

[0044] When the present application is in use, the natural gas pipeline valve is located between the two natural gas pipelines 2, and then the installation tube 33 is pulled to make one end of the first flange plate 41 contact with the second flange plate 42 on one side of the natural gas pipeline 2, and then the first flange plate 41 and the second flange plate 42 are connected by the connecting bolts 43, thereby completing the installation of the natural gas pipeline valve, and then a colored solution is injected into the sealing liquid capsule 52, and the colored solution fills the sealing liquid capsule 52, so that the sealing liquid capsule 52 is close to the second flange plate 42, so that a sealed detection space is formed between the sealing liquid capsule 52, the connecting shell 51, the first flange plate 41 and the second flange plate 42, and the natural gas detection instrument 53 detects the natural gas content in the detection space. When a leak occurs in the connection between the first flange plate 41 and the second flange plate 42, the natural gas detection instrument 53 can detect it, which proves that the seal between the first flange plate 41 and the second flange plate 42 is damaged, and the connection component 4 needs to be inspected and maintained.

[0045] The benefits of this application are:

[0046] 1. The present application is easy to install. A sealed detection space can be quickly formed on the outside of the connection component by using a sealing liquid capsule. When a natural gas leak occurs at the connection component, the natural gas enters the detection space. At this time, the natural gas detection instrument can detect the content of the natural gas in the detection space, thereby determining whether there is a natural gas leak. The operation is convenient;

[0047] 2. The present application has a reasonable structure. The position of the first flange plate can be adjusted by using an extension pipe, thereby adjusting the width of the natural gas pipeline valve, making it easier to connect two natural gas pipelines at different distances, and increasing the practicality of the natural gas pipeline valve.

[0048] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A natural gas pipeline valve with a gas leakage detection function, characterized in that: It comprises a pipeline valve body (1), wherein the inlet and outlet ends of the pipeline valve body (1) are both provided with natural gas pipelines (2); An extension component (3), the inlet and outlet ends of the pipeline valve body (1) are both connected to the extension component (3); A connection assembly (4), wherein the natural gas pipeline (2) and the extension assembly (3) are detachably connected via the connection assembly (4), wherein the connection assembly (4) enables the pipeline valve body (1) to be installed at a position between the two natural gas pipelines (2), and the pipeline valve body (1) connects the two natural gas pipelines (2) and controls the connection and closing between the two natural gas pipelines (2); An air leakage detection component (5), the air leakage detection component (5) being installed on the outside of the connecting component (4) and used for performing air leakage detection on the extension component (3); The gas leakage detection assembly (5) is composed of a connecting shell (51), a sealing liquid capsule (52) and a natural gas detection instrument (53); one side of the connecting shell (51) is fixedly connected to the outer side of the first flange plate (41); the sealing liquid capsule (52) is fixedly connected to the inner wall of the connecting shell (51); and the natural gas detection instrument (53) is installed on the side of the connecting shell (51).

2. The natural gas pipeline valve with gas leakage detection function according to claim 1 is characterized in that: The pipeline valve body (1) comprises a valve body (11) and a valve stem (12); the valve stem (12) is arranged on the upper side of the valve body (11); and the valve stem (12) is used to control the opening and closing of the valve body (11).

3. The natural gas pipeline valve with gas leakage detection function according to claim 1 is characterized in that: The extension assembly (3) is composed of a fixed tube (31), an extension tube (32) and a mounting tube (33); one end of the fixed tube (31) is connected to the pipeline valve body (1); a support assembly (6) is arranged outside the fixed tube (31); one end of the fixed tube (31) away from the pipeline valve body (1) is fixedly connected to the extension tube (32); one end of the extension tube (32) away from the fixed tube (31) is fixedly connected to the mounting tube (33); and one end of the mounting tube (33) away from the extension tube (32) is fixedly connected to the connection assembly (4).

4. The natural gas pipeline valve with gas leakage detection function according to claim 3 is characterized in that: The inlet and outlet ends of the pipeline valve body (1) are both fixedly connected with fixed pipes (31).

5. The natural gas pipeline valve with gas leakage detection function according to claim 1 is characterized in that: The connection assembly (4) is composed of a first flange plate (41), a second flange plate (42) and connecting bolts (43); one side of the first flange plate (41) is fixedly connected to one end of the mounting pipe (33); the first flange plate (41) and the second flange plate (42) are connected via connecting bolts (43); and the side of the second flange plate (42) away from the first flange plate (41) is fixedly connected to one end of the natural gas pipeline (2).

6. The natural gas pipeline valve with gas leakage detection function according to claim 5 is characterized in that: A flange gasket is provided between the first flange plate (41) and the second flange plate (42), and the first flange plate (41) and the second flange plate (42) are connected via a plurality of connecting bolts (43).

7. The natural gas pipeline valve with gas leakage detection function according to claim 1, characterized in that: The side of the sealing liquid capsule (52) away from the natural gas detection instrument (53) contacts the second flange plate (42), and a flushing port is provided at the sealing liquid capsule (52), and the flushing port is connected to the connecting shell (51), and a sealed detection space is formed between the sealing liquid capsule (52), the connecting shell (51), the first flange plate (41) and the second flange plate (42).

8. The natural gas pipeline valve with gas leakage detection function according to claim 1, characterized in that: The natural gas detection instrument (53) is installed on the outside of the connecting shell (51), and the detection end of the natural gas detection instrument (53) extends into the detection space.

9. The natural gas pipeline valve with gas leakage detection function according to claim 3 is characterized in that: The support assembly (6) is composed of a fixing ring (61), a sliding column (62), a support ring (63) and a connecting column (64); the fixing ring (61) is fixedly connected to the outside of the fixing tube (31); a plurality of sliding columns (62) are fixedly connected to one side of the fixing ring (61); an end of the sliding column (62) away from the fixing ring (61) is fixedly connected to the outside of the connecting shell (51); the sliding column (62) is connected through the support ring (63); a plurality of connecting columns (64) are fixedly connected to the inside of the support ring (63); an end of the connecting column (64) away from the support ring (63) is fixedly connected to the surface of the fixing tube (31).

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