Gas station pipeline leakage detection device

Abstract

The utility model discloses a gas station pipeline leakage detection device, which relates to the field of gas leakage detection and comprises a gas station pipeline, a first protective cover is arranged at the joint of the gas station pipeline, a second protective cover is arranged at the bottom end of the first protective cover, and a sealing connection assembly is arranged between the first protective cover and the second protective cover. A round hole is formed in the outer wall of the first protective cover, a gas pressure release mechanism is arranged at the round hole, and a gas sensor is arranged in the first protective cover; a connecting pipe is arranged on one side of the first protective cover, and a valve is arranged at the end of the connecting pipe. According to the gas station pipeline joint detection device, whether gas leakage occurs at the gas station pipeline joint or not can be detected, gas is prevented from leaking into air, pressure in the first protective cover and the second protective cover can be released to a certain degree, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of gas leakage detection, in particular to a gas station pipeline leakage detection device. Background Art

[0002] Gas stations refer to a collection of facilities used to receive, pressurize, distribute, peak-shift and send natural gas in the natural gas transmission system. These stations play a key role in the natural gas transmission system, including gas transmission first stations, terminal stations and various intermediate stations.

[0003] Gas station pipeline leakage refers to the gas leakage from the pipeline system in these stations. This leakage may be caused by a variety of reasons, such as sealing failure at flange connections, loose bolts, pipeline vibration, third-party damage or pipeline aging. Leakage not only affects the efficiency of the system, but also may bring safety risks. When a leak occurs in the pipeline of a gas station, it is necessary to detect the leak in time and deal with the leak appropriately to prevent the gas from escaping into the air and posing a safety hazard.

[0004] For example, Chinese patent 202321146899.9 discloses a gas station leakage detection device, in which the gas pipeline passes through the upper shield, and detectors are installed on the inner walls of the upper and lower shields. Both the upper and lower shields are vacuum insulation board structures, which can prevent gas from escaping into the air. However, the above device still has the following shortcomings: gas leaks in the upper and lower shields, and there is no pressure release structure. When used in practice, the shields may be damaged due to the increase in pressure in the shields.

[0005] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the shortcomings of the prior art, the utility model provides a gas station pipeline leakage detection device, which has the advantage of releasing the pressure inside the first protective cover and the second protective cover to improve safety, thereby solving the problem that the prior art does not have a pressure release structure and the protective cover may be damaged due to the increase in pressure inside the protective cover.

[0008] (II) Technical solution

[0009] In order to achieve the above advantages of releasing the pressure in the first shield and the second shield and improving safety, the specific technical solutions adopted by the utility model are as follows:

[0010] A gas station pipeline leakage detection device comprises a gas station pipeline, wherein a first protective cover is arranged at the connection of the gas station pipeline, a second protective cover is arranged at the bottom end of the first protective cover, and a sealing connection component is arranged between the first protective cover and the second protective cover; a circular hole is arranged on the outer wall of the first protective cover, a gas pressure release mechanism is arranged at the circular hole, and a gas sensor is arranged in the first protective cover; a connecting pipe is arranged on one side of the first protective cover, and a valve is arranged at the end of the connecting pipe.

[0011] Furthermore, in order to connect the first shield and the second shield, the sealing connection assembly includes a first connecting plate and a second connecting plate respectively arranged at both ends of the first shield and the second shield, the first connecting plate and the second connecting plate are connected by a first bolt, and a nut is sleeved on the outer side of the end of the first bolt.

[0012] Furthermore, in order to improve the sealing of the entire device and prevent gas leakage from the joints, a first sealing gasket is provided between the first shield and the second shield, and a second sealing gasket is provided between the first shield, the second shield and the outer wall of the gas station pipeline.

[0013] Furthermore, in order to release part of the pressure and effectively avoid damage to the first shield and the second shield, the gas pressure release mechanism includes a ventilation pipe arranged at the circular hole, and the top of the ventilation pipe is connected to an air bag; a mounting plate is arranged at the bottom end of the air bag and located on the outside of the ventilation pipe, and the mounting plate is connected to the first shield through a second bolt; a sealing ring is arranged between the mounting plate and the first shield and located on the outside of the ventilation pipe.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a gas station pipeline leakage detection device, which has the following beneficial effects:

[0016] (1) The utility model can detect whether there is leakage at the connection of the pipeline in the gas station, prevent the gas from leaking into the air, and release the pressure in the first protective cover and the second protective cover to a certain extent, thereby improving safety.

[0017] (2) By providing a sealing connection assembly, a sealing structure is added between the first shield and the second shield, and between the first shield, the second shield and the pipeline, which can greatly improve the sealing of the entire device and prevent gas leakage from the joints. It is also easy to install and maintain, and can be easily disassembled and reinstalled if maintenance or inspection is required.

[0018] (3) A gas pressure release mechanism, so that when the pressure inside the first shield and the second shield is too high, the airbag can expand to release part of the pressure, effectively avoiding damage to the first shield and the second shield, and ensuring the sealing of the ventilation pipe by setting a sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of a gas station pipeline leakage detection device according to an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0022] Figure 3 yes Figure 1 A partial enlarged view of point B in the middle;

[0023] Figure 4 It is a three-dimensional assembly diagram of a gas pressure release mechanism in a gas station pipeline leakage detection device according to an embodiment of the utility model.

[0024] In the figure:

[0025] 1. Gas station pipeline; 2. First protective cover; 3. Second protective cover; 4. Sealing connection assembly; 401. First connecting plate; 402. Second connecting plate; 403. First bolt; 404. Nut; 405. First sealing gasket; 406. Second sealing gasket; 5. Round hole; 6. Gas pressure release mechanism; 601. Ventilation pipe; 602. Air bag; 603. Mounting plate; 604. Second bolt; 605. Sealing ring; 7. Gas sensor; 8. Connecting pipe; 9. Valve. DETAILED DESCRIPTION

[0026] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0027] According to an embodiment of the utility model, a gas station pipeline leakage detection device is provided.

[0028] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-4As shown, a gas station pipeline leakage detection device according to an embodiment of the utility model includes a gas station pipeline 1, a first protective cover 2 is arranged at the connection of the gas station pipeline 1, a second protective cover 3 is arranged at the bottom end of the first protective cover 2, a sealing connection component 4 is arranged between the first protective cover 2 and the second protective cover 3, and in specific applications, a support frame is arranged at the bottom end of the second protective cover 3 for supporting the second protective cover 3 and the components above it; a circular hole 5 is arranged on the outer wall of the first protective cover 2, a gas pressure release mechanism 6 is arranged at the circular hole 5, and a gas sensor 7 is arranged in the first protective cover 2; a connecting pipe 8 is arranged on one side of the first protective cover 2, and a valve 9 is arranged at the end of the connecting pipe 8. When there is gas between the first protective cover 2 and the second protective cover 3, the connecting pipe 8 can be connected to an external air pump, and the valve 9 is opened, and the ventilation pump draws the gas away, so that after the first protective cover 2 is opened, the gas will not leak into the air.

[0029] In addition, when the gas station pipeline 1 of the gas station transports gas, the gas pressure is increased by a compressor to meet the needs of long-distance transportation. When the gas leaks at the connection and contacts the semiconductor material in the gas sensor 7, the interaction between the gas molecules and the semiconductor surface will cause the number of carriers inside the material to change, thereby affecting the conductivity of the material. This change is usually manifested as an increase or decrease in resistance. By monitoring this change in resistance, the gas concentration in the environment can be indirectly measured.

[0030] With the aid of the above scheme, the utility model can detect whether there is leakage at the connection of the gas station pipeline, prevent the gas from leaking into the air, and can release the pressure in the first protective cover 2 and the second protective cover 3 to a certain extent, thereby improving safety.

[0031] In one embodiment, for the above-mentioned sealing connection assembly 4, the sealing connection assembly 4 includes a first connection plate 401 and a second connection plate 402 respectively arranged at both ends of the first shield 2 and the second shield 3, the first connection plate 401 and the second connection plate 402 are connected by a first bolt 403, and a nut 404 is sleeved on the outer side of the end of the first bolt 403; a first sealing gasket 405 is arranged between the first shield 2 and the second shield 3, and a second sealing gasket 406 is arranged between the first shield 2 and the second shield 3 and the outer wall of the gas station field pipeline 1, so that by adding a sealing structure between the first shield 2 and the second shield 3, and between the first shield 2 and the second shield 3 and the pipeline, the sealing of the entire device can be greatly improved to prevent gas from leaking from the joint. It is also easy to install and maintain, and can be easily disassembled and reinstalled if repair or inspection is required.

[0032] The working principle of the sealing connection assembly 4 is: the connection between the first shield 2 and the second shield 3 is achieved through the first bolt 403 and the nut 404, and the connection is sealed using the first sealing gasket 405 and the second sealing gasket 406 to ensure that no gas leakage occurs inside or outside the first shield 2 and the second shield 3.

[0033] In one embodiment, for the above-mentioned gas pressure release mechanism 6, the gas pressure release mechanism 6 includes a vent pipe 601 arranged at the circular hole 5, the top end of the vent pipe 601 is connected to an airbag 602, and the airbag 602 uses a foam material with rubber and polyvinyl chloride as the main materials, and has fire retardant, moisture-proof and other properties, and has good heat insulation performance; a mounting plate 603 is arranged at the bottom end of the airbag 602 and located on the outside of the vent pipe 601, and the mounting plate 603 is connected to the first shield 2 through a second bolt 604; a sealing ring 605 is arranged between the mounting plate 603 and the first shield 2 and located on the outside of the vent pipe 601, so that when the pressure inside the first shield 2 and the second shield 3 is too high, the airbag 602 can expand to release part of the pressure, effectively avoiding damage to the first shield 2 and the second shield 3, and the sealing at the vent pipe 601 is ensured by setting the sealing ring 605.

[0034] The working principle of the gas pressure release mechanism 6 is: when the internal pressure of the first shield 2 and the second shield 3 increases, the airbag 602 is deployed, increasing the volume, thereby releasing part of the pressure to prevent the first shield 2, the second shield 3 or the connection from rupture due to excessive pressure.

[0035] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0036] In actual application, the gas station pipeline 1 in the gas station transports gas. When the gas leaks at the connection of the gas station pipeline 1, the first protective cover 2 and the second protective cover 3 are used to wrap the connection of the gas station pipeline 1 to form a closed space. Then the gas sensor 7 is used to detect whether there is an increase in gas concentration in the space to determine whether there is a leak. If a leak is found, the valve of the gas station pipeline 1 is closed and the gas transportation of the gas station pipeline 1 is suspended. At the same time, the sealing connection component 4 and the gas pressure release mechanism 6 ensure the safety of the entire detection process to prevent gas leakage. After the gas in the first protective cover 2 and the second protective cover 3 is extracted, the first protective cover 2 is opened, and the cause of the leakage of the connection of the gas station pipeline 1 is checked.

[0037] In summary, the utility model can detect whether there is leakage at the connection of the gas station pipeline, prevent gas from leaking into the air, and release the pressure in the first shield 2 and the second shield 3 to a certain extent, thereby improving safety. By setting a sealing connection component 4, by adding a sealing structure between the first shield 2 and the second shield 3, and between the first shield 2 and the second shield 3 and the pipeline, the sealing of the entire device can be greatly improved to prevent gas from leaking from the joints. It is also easy to install and maintain, and can be easily disassembled and reinstalled if maintenance or inspection is required. The gas pressure release mechanism 6, when the pressure inside the first shield 2 and the second shield 3 is too high, the airbag 602 can expand to release part of the pressure, effectively avoiding damage to the first shield 2 and the second shield 3, and ensuring the sealing of the vent pipe 601 by setting a sealing ring 605.

[0038] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas station pipeline leakage detection device, comprising a gas station pipeline (1), characterized in that: A first protective cover (2) is provided at the connection of the gas station pipeline (1), a second protective cover (3) is provided at the bottom end of the first protective cover (2), and a sealing connection component (4) is provided between the first protective cover (2) and the second protective cover (3); A circular hole (5) is provided on the outer wall of the first protective cover (2), a gas pressure release mechanism (6) is provided at the circular hole (5), and a gas sensor (7) is provided inside the first protective cover (2).

2. A gas station pipeline leakage detection device according to claim 1, characterized in that: A connecting pipe (8) is provided on one side of the first protective cover (2), and a valve (9) is provided at the end of the connecting pipe (8).

3. A gas station pipeline leakage detection device according to claim 1 or 2, characterized in that: The sealing connection assembly (4) comprises a first connection plate (401) and a second connection plate (402) respectively arranged at two ends of the first protective cover (2) and the second protective cover (3); the first connection plate (401) and the second connection plate (402) are connected by a first bolt (403), and a nut (404) is sleeved on the outer side of the end of the first bolt (403).

4. A gas station pipeline leakage detection device according to claim 3, characterized in that: A first sealing gasket (405) is provided between the first protective cover (2) and the second protective cover (3), and a second sealing gasket (406) is provided between the first protective cover (2) and the second protective cover (3) and the outer wall of the gas station pipeline (1).

5. A gas station pipeline leakage detection device according to claim 4, characterized in that: The gas pressure release mechanism (6) comprises a vent pipe (601) arranged at the circular hole (5), and the top end of the vent pipe (601) is connected to an air bag (602).

6. A gas station pipeline leakage detection device according to claim 5, characterized in that: A mounting plate (603) is provided at the bottom end of the airbag (602) and located outside the ventilation pipe (601), and the mounting plate (603) is connected to the first shield (2) via a second bolt (604).

7. A gas station pipeline leakage detection device according to claim 6, characterized in that: A sealing ring (605) is provided between the mounting plate (603) and the first protective cover (2) and on the outside of the ventilation pipe (601).

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