Industrial enterprise passing gas pipeline leak detection device

Abstract

An industrial enterprise passing gas pipeline leak detection device is characterized in that a protective sleeve (2) is arranged outside a gas pipe, two ends of the protective sleeve (2) are provided with an anti-corrosion waterproof sealing material, and the sealing material is fixed in two ferrules (3); the gas pipe (1) is provided with an insulating bracket (4); the insulating bracket (4) is fixed on the inner wall of the lower part of the protective sleeve (2); a gas collecting hood (8) is arranged in a space between the protective sleeve (2) and the gas pipe (1) and is communicated with a gas chamber (10) through a leak detection pipe (7); a sealing plate (9) is arranged between the leak detection pipe (7) and the protective sleeve (2) for sealing; a combustible gas detector (11) is arranged in the gas chamber (10), a signal of the combustible gas detector (11) is connected with a control chamber, a sealing cover is arranged on the upper portion of the gas chamber (10), and the sealing cover is in threaded connection with the gas chamber (10). The device can timely and effectively detect whether leakage exists at the passing position of the gas pipeline or not.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas pipeline leakage detection, and relates to a leakage detection device for industrial enterprise gas pipelines passing through roads. Background Art

[0002] The gas used by industrial enterprises is mostly transported by directly burying pipelines underground. Due to the long burial time, natural gas pipelines are prone to gas leakage due to reasons such as soil corrosion, construction quality, or external stress. Industrial enterprises are large gas consumers. The gas pipelines have large diameters and the roads are overloaded with heavy vehicles. Special attention needs to be paid to the places where gas pipelines pass through roads. Preventing gas pipeline leakage is an important part of pipeline transportation. Once natural gas leaks, it is easy to cause accidents. In the case of contact reactions between natural gas and various external variable factors, major accidents such as deflagration may occur.

[0003] How to quickly and effectively detect whether there is gas leakage at the road-crossing section, so as to handle accidents in the first time, has become the key to preventing safety accidents. Content of the Utility Model

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a leakage detection device for industrial enterprise gas pipelines passing through roads, which is used to detect gas leakage in pipelines and is convenient and practical.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A leakage detection device for industrial enterprise gas pipelines passing through roads, a protective casing is arranged outside the gas pipeline, anti-corrosion and waterproof sealing materials are arranged at both ends of the protective casing, and the sealing materials are fixed in two ferrules; insulating brackets are arranged on the gas pipeline, and the insulating brackets are fixed on the inner wall of the lower part of the protective casing; a gas collecting hood is arranged in the space between the protective casing and the gas pipeline and is communicated with a gas chamber through a leakage detection pipe; a sealing plate seals between the leakage detection pipe and the protective casing; a combustible gas detector is arranged inside the gas chamber, the signal of the combustible gas detector is connected to a control room, a sealing cover is arranged on the upper part of the gas chamber, and the sealing cover is threadedly connected with the gas chamber.

[0007] Furthermore, a cast iron protective cover is arranged outside the gas chamber.

[0008] Furthermore, the shape of the gas collecting hood is a horn shape and is made of stainless steel plate.

[0009] Furthermore, the inner diameter of the protective casing should be more than 150 mm larger than the outer diameter of the gas pipeline, and the space between the upper parts of the protective casing and the gas pipeline is not less than 100 mm.

[0010] Furthermore, the sealing materials are, from inside to outside, tarred hemp yarn and rock wool cement in sequence.

[0011] Advantages of the present utility model: A gas collecting hood is arranged inside the gas pipe and the protective sleeve, which can accelerate the collection of gas and is conducive to detecting the leaked gas in the first time; through the remote transmission of the combustible gas detector, it is convenient for the manager to quickly locate the gas leakage point and handle the accident; the production and construction of the detection device are simple and the operation is convenient. Brief Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of a leak detection method for a passing gas pipeline in an industrial enterprise.

[0013] In the figure: 1. Gas pipe; 2. Protective sleeve; 3. Ferrule; 4. Insulating bracket; 5. Tarred hemp; 6. Rock wool cement; 7. Leak detection pipe; 8. Gas collecting hood; 9. Sealing plate; 10. Gas chamber; 11. Combustible gas detector; 12. Cast iron protective cover. Specific Embodiments

[0014] The present utility model will be described in detail below through specific embodiments.

[0015] Figure 1 As shown: A leak detection device for a passing gas pipeline in an industrial enterprise, a protective sleeve 2 is arranged outside the gas pipe, anti-corrosion and waterproof sealing materials are arranged at both ends of the protective sleeve 2, and the sealing materials are fixed in two ferrules 3; the gas pipe 1 is provided with an insulating bracket 4, and the insulating bracket 4 is fixed on the lower inner wall of the protective sleeve 2; a gas collecting hood 8 is arranged in the space between the protective sleeve 2 and the gas pipe 1 and is communicated with a gas chamber 10 through a leak detection pipe 7; a sealing plate 9 seals between the leak detection pipe 7 and the protective sleeve 2; a combustible gas detector 11 is arranged inside the gas chamber 10, and the signal of the combustible gas detector 11 is connected to a control room for monitoring in the control room. A sealing cover is arranged on the upper part of the gas chamber 10, and the sealing cover is threadedly connected with the gas chamber 10.

[0016] A cast iron protective cover 12 is arranged outside the gas chamber 10. The gas collecting hood 8 is in a horn shape and is made of a stainless steel plate, and the stainless steel plate is 0.5 - 1 mm; the inner diameter of the protective sleeve 2 is more than 150 mm larger than the outer diameter of the gas pipe 1, and the space between the upper parts of the protective sleeve 2 and the gas pipe 1 is not less than 100 mm; the sealing materials are tarred hemp 5 and rock wool cement 6 from the inside to the outside.

Claims

1. A leakage detection device for a passing gas pipeline in an industrial enterprise, characterized in that: A protective sleeve (2) is provided outside the gas pipe. Anticorrosive and waterproof sealing materials are provided at both ends of the protective sleeve (2), and the sealing materials are fixed within two ferrule rings (3); an insulating support (4) is provided on the gas pipe (1), and the insulating support (4) is fixed on the inner wall of the lower part of the protective sleeve (2); there is a gas collecting hood (8) in the space between the protective sleeve (2) and the gas pipe (1), which is communicated with a gas chamber (10) through a leak detection pipe (7); a sealing plate (9) is used for sealing between the leak detection pipe (7) and the protective sleeve (2); a combustible gas detector (11) is provided inside the gas chamber (10), and the signal of the combustible gas detector (11) is connected to a control room. A sealing cover is provided at the upper part of the gas chamber (10), and the sealing cover is threadedly connected to the gas chamber (10).

2. The leak detection device for the industrial enterprise's passing gas pipeline according to claim 1, wherein: A cast iron protective cover (12) is provided outside the gas chamber (10).

3. The leak detection device for the industrial enterprise's passing gas pipeline according to claim 1, characterized in that: The gas collecting hood (8) is in a horn shape and is made of stainless steel plate.

4. An industrial enterprise passing gas pipeline leakage detection device according to claim 1, characterized in that: The inner diameter of the protective sleeve (2) is more than 150 mm larger than the outer diameter of the gas pipe (1), and the space between the upper parts of the protective sleeve (2) and the gas pipe (1) is not less than 100 mm.

5. The leak detection device for the industrial enterprise's passing gas pipeline according to claim 1, wherein: The sealing materials are, from the inside to the outside, tarred hemp yarn (5) and rock wool cement (6).

Images