Biogas conveying pipeline structure

Abstract

The utility model relates to the technical field of natural gas conveying equipment, in particular to a biogas conveying pipeline structure. Comprising a heat preservation protection pipe and a gas conveying pipe, a gas leakage isolation pipe is arranged on the outer surface of the gas conveying pipe and comprises a breathable layer attached to the surface of the gas conveying pipe, a plurality of elastic rubber blocks are evenly distributed on the surface of the breathable layer, the top ends of the rubber blocks are jointly connected with a rubber pipe, and the two ends of the rubber pipe and the surface of the gas conveying pipe are sealed. A natural gas leakage detector is arranged in the rubber pipe and electrically connected with an alarm, a plurality of arc-shaped plates are arranged on the surface of the rubber pipe in an annular array mode, and supporting rods are fixed between the arc-shaped plates and the inner wall of the heat preservation protection pipe. After the pipeline is broken, natural gas enters the rubber pipe through the breathable layer, the natural gas is temporarily intercepted, potential safety hazards caused by dissipation are avoided, and the rubber pipe can contain leaked gas exceeding the size of a normal tubular structure; meanwhile, the natural gas leakage detector detects the leakage condition and transmits the leakage condition to the alarm for warning.

Description

TECHNICAL FIELD

[0001] The present application relates to natural gas conveying equipment technical field, especially to a kind of biological natural gas conveying pipeline structure. BACKGROUND

[0002] Natural gas is only natural deposit in stratum hydrocarbon and non-hydrocarbon gas mixture, usually refers to oilfield gas and gas field gas.Natural gas is excavated, is conveyed by pipeline network.Natural gas pipeline network is mainly composed of gas source, gas pipeline, gas storage facility, compressor unit and distribution network.

[0003] Gas pipeline is the key transmission channel of natural gas from gas source to user, is usually composed of high-strength steel or plastic material, to withstand high pressure and ensure the safe conveying of natural gas.But when the gas flow rate in natural gas pipeline exceeds the specified range, serious scouring phenomenon occurs, long-term, it will lead to pipe wall wear, serious perforation and cause leakage accident.Pipe rupture, natural gas is directly discharged to the outside, it is easy to bring life danger to passerby or maintenance personnel.

[0004] Therefore, the present application provides a kind of biological natural gas conveying pipeline structure, temporary cut-off is carried out when pipeline leaks, and warning is issued to the leakage area. CONTENT OF THE INVENTION

[0005] The purpose of the present application is to solve the problems in the prior art, and a kind of biological natural gas conveying pipeline structure is provided.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] A kind of biological natural gas conveying pipeline structure, including peripheral heat preservation pipe and internal gas pipeline, the outer surface of gas pipeline is equipped with leakage isolation pipe, the leakage isolation pipe includes the gas-permeable layer attached to the surface of gas pipeline, the surface of gas-permeable layer is uniformly distributed with several elastic rubber blocks, the top of several rubber blocks is connected with rubber tube, the both ends of rubber tube are sealed with the surface of gas pipeline, natural gas leak detector is arranged in rubber tube, natural gas leak detector is electrically connected with alarm, the surface of rubber tube is annular array with multiple arc plates, and the arc plate and the inner wall of heat preservation pipe are fixed with strut.

[0008] Preferably, the heat preservation pipe includes outer glass steel pipe, intermediate heat preservation layer and inner sleeve.

[0009] Preferably, the leakage isolation pipe is provided with several sections, and the rubber tube of each section of leakage isolation pipe is sealed with the surface of gas pipeline.

[0010] Preferably, oil and hemp layer and asphalt paste are arranged between the port of rubber tube and gas pipeline from inside to outside.

[0011] Preferably, the inner edge surface of the arc-shaped plate is uniformly distributed with a plurality of circular protrusions.

[0012] Preferably, the rubber tube is sleeved with a supporting tube matched with the arc-shaped plate.

[0013] Compared with the prior art, the application provides a biological natural gas conveying pipeline structure, which has the following beneficial effects:

[0014] After the pipeline is broken, the natural gas penetrates through the gas-permeable layer into the rubber tube, temporarily intercepts the natural gas, and avoids the safety hidden danger caused by the escape. When the leakage amount gradually increases, the gas pressure in the rubber tube gradually rises and the supporting tube deforms, which can accommodate the leaked gas exceeding the volume of the normal pipe structure, and the accommodation amount is improved. The natural gas leakage detector is arranged in the rubber tube, and when the natural gas leaks, the natural gas leakage detector detects the leakage and transmits the leakage to the alarm, which is used for warning.

[0015] Other advantages, objects, and features of the application will be set forth in part in the following specification taken in conjunction with the accompanying drawings; and in part will become apparent to those skilled in the art upon examination of the following specification and drawings; or can be learned from practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross section of the gas conveying pipeline of the application.

[0017] Figure 2 It is a schematic diagram of the radial cross section of the gas leakage isolation pipe of the application.

[0018] Figure 3 It is a schematic diagram of the axial cross section of the gas conveying pipeline of the application.

[0019] Figure 4 It is a schematic diagram of the Figure 3 partial view of A of the application.

[0020] In the figure: 1, heat preservation protection pipe; 2, gas conveying pipe; 3, gas-permeable layer; 4, rubber block; 5, rubber tube; 6, arc-shaped plate; 7, supporting rod; 8, oil and hemp layer; 9, asphalt paste; 101, glass steel pipeline; 102, heat preservation layer; 103, sleeve pipe. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the application will be described below with reference to the accompanying drawings of the embodiments of the application. Figures 1-4 The technical solutions in the embodiments of the application will be described below with reference to the accompanying drawings of the embodiments of the application.

[0022] In order to solve the problems existing in the prior art, the embodiment provides a bio-natural gas conveying pipeline structure, which comprises an outer heat preservation protection pipe 1 and an inner gas conveying pipe 2. The outer surface of the gas conveying pipe 2 is provided with a gas leakage isolation pipe. The gas leakage isolation pipe comprises a gas permeable layer 3 attached to the surface of the gas conveying pipe 2. The surface of the gas permeable layer 3 is uniformly distributed with a plurality of elastic rubber blocks 4. The top ends of the plurality of rubber blocks 4 are jointly connected with a rubber pipe 5. The rubber pipe 5 is sealed between the two ends and the surface of the gas conveying pipe 2. The rubber pipe 5 is provided with a natural gas leakage detector. The natural gas leakage detector is electrically connected with an alarm. The surface of the rubber pipe 5 is annularly arranged with a plurality of arc-shaped plates 6. The arc-shaped plates 6 are fixed with a supporting rod 7 between the inner wall of the heat preservation protection pipe 1.

[0023] Principle details of the embodiment:

[0024] The bio-natural gas conveying pipeline structure comprises an outer heat preservation protection pipe 1 and an inner gas conveying pipe 2. The gas conveying pipe 2 is made of a high-strength steel pipe and internally conveys flowing natural gas. The heat preservation protection pipe 1 plays a role of temperature insulation, heat preservation and protection of the inner gas conveying pipe 2.

[0025] The outer surface of the gas conveying pipe 2 is provided with a gas leakage isolation pipe. The gas leakage isolation pipe comprises a gas permeable layer 3 attached to the surface of the gas conveying pipe 2. The gas permeable layer 3 is tightly attached to the outer wall of the gas conveying pipe 2, such as being connected in a glued manner. The surface of the gas permeable layer 3 is uniformly distributed with a plurality of elastic rubber blocks 4. The top ends of the plurality of rubber blocks 4 are jointly connected with a rubber pipe 5. The rubber pipe 5 is sealed between the two ends and the surface of the gas conveying pipe 2, forming a temporary storage space for leaked natural gas.

[0026] The rubber pipe 5 is provided with a natural gas leakage detector, such as an MQ-4 natural gas gas-sensitive sensor module, for monitoring natural gas leakage. The natural gas leakage detector is electrically connected with an alarm. The alarm is arranged outside the heat preservation protection pipe 1. If the heat preservation protection pipe 1 is arranged underground, the alarm is arranged on the ground. A wire hole is arranged on the heat preservation protection pipe 1 for a power supply wire to pass through. A sealing measure is arranged at the wire hole to avoid gas leakage.

[0027] The surface of the rubber pipe 5 is annularly arranged with a plurality of arc-shaped plates 6. The arc-shaped plates 6 are fixed with a supporting rod 7 between the inner wall of the heat preservation protection pipe 1.

[0028] In the scheme, the gas permeable layer 3 is made of a gas permeable material or a pipe surface supported by rubber and uniformly distributed with a plurality of gas holes, so as to achieve the purpose of gas permeability.

[0029] According to the above technical scheme:

[0030] In normal use, the gas conveying pipe 2 is arranged inside the heat preservation protection pipe 1 through the arc-shaped plates 6 and the supporting rod 7, is heat preserved and heat insulated by the heat preservation protection pipe 1 and is maintained at-20℃ to 70℃. Too low temperature can cause liquefaction of natural gas, increase of pipeline internal pressure and energy consumption. Too high temperature can cause safety hazards and equipment failure.

[0031] When the gas pipe 2 is often washed by natural gas during long-term use, especially at the bending part, there is a risk of rupture. After the pipe is ruptured, natural gas penetrates through the gas permeable layer 3 into the rubber pipe 5. Since the rubber pipe 5 is sealed at both ends, the natural gas accumulates in the rubber pipe 5, temporarily cutting off the natural gas to avoid escaping and causing safety hazards. When the leakage gradually increases, the gas pressure in the rubber pipe 5 gradually rises and the deformation is gradually expanded, which can accommodate the leaked gas exceeding the volume of the normal pipe structure, and the accommodation capacity is improved. Compared with the rigid pipe, the rubber pipe 5 is easier to cut off during maintenance, and it is also easier to repair and seal after cutting. Even if the cost of discarding is low, the waste is reduced. The rubber pipe 5 can also play a certain heat preservation role, and can cooperate with the heat preservation protection pipe 1 to play a double-layer heat preservation role. And when the leakage reaches a certain degree, the rubber pipe 5 locally reaches the deformation limit and ruptures, which can absorb a certain amount of energy compared with the hard pipe, thereby avoiding the explosion caused by the rupture of the pipe. The natural gas leakage detector is arranged in the rubber pipe 5, which detects the leakage when natural gas leaks and transmits the leakage to the alarm for warning.

[0032] Preferably, in the present embodiment, the heat preservation protection pipe 1 is provided with an exhaust pipe, and the exhaust pipe port is provided with a stop valve. After the gas leaks, the valves at both ends of the heat preservation protection pipe 1 are first closed, and then the outlet end of the stop valve is connected to the pipeline, and the pipeline is connected to the tank through the pump. After the stop valve is opened, the natural gas escaping from the heat preservation protection pipe 1 and the residual natural gas in the gas pipe 2 cut off by the valve are removed to prevent the danger caused by the escape of natural gas during maintenance.

[0033] In a further embodiment of the present application, a specific heat preservation protection pipe 1 structure capable of heat preservation and having protection effect is provided: the heat preservation protection pipe 1 comprises an outer glass steel pipe 101, an intermediate heat preservation layer 102 and an inner sleeve 103.

[0034] The main material of the glass steel pipe is composed of unsaturated polyester resin and glass fiber, which can effectively resist the corrosion of acid, alkali and salt media and the corrosion of untreated corrosive soil. It can provide the whole pipeline equipment.

[0035] The heat preservation layer 102 of the pipeline is usually composed of a heat preservation layer 102, a protection layer and a waterproof layer. The heat preservation layer 102 is usually wrapped by rubber ring or felt, glass cloth, foamed plastic and other materials, that is, to prevent the influence of external environment temperature on the existing state of natural gas transportation in the gas pipe 2; and to avoid heat loss of natural gas during transportation. The waterproof layer is to prevent the corrosion of water seepage in the pipeline.

[0036] The sleeve 103 can be made of any one of glass steel pipe, high-strength plastic pipe and steel pipe, which is used to provide a mounting basis for suspending the internal gas pipe 2 and its supporting equipment.

[0037] Example 3, a further embodiment of this solution, the leakage isolation tube is provided with several sections, and the rubber tube 5 of each leakage isolation tube is sealed to the surface of the gas transmission pipe 2.

[0038] Along gas pipeline 2, several sections of leak-proof isolation pipes are sequentially installed, with each section sealed at its end. This ensures that each leak-proof isolation pipe is independent of the others, confining the leak to a single pipeline. Once the corresponding alarm for that pipeline is activated, it facilitates easier location of the leak by maintenance personnel, improving maintenance efficiency. Furthermore, the multiple leak-proof isolation pipes allow for individual replacement only when a single leak-proof isolation pipe fails, reducing maintenance and replacement costs.

[0039] Example 4, a further embodiment of this solution, provides a specific sealing method for the port of the leakage isolation pipe: refer to the attached... Figure 4 As shown, the rubber tube 5 and the gas pipe 2 are provided with an oil-hemp layer 8 and an asphalt paste 9 from the inside out. This provides both waterproofing and a good sealing effect.

[0040] In Example 5, a further embodiment of this solution, the inner edge of the arc-shaped plate 6 is evenly distributed with several circular protrusions. This reduces the contact area between the arc-shaped plate 6 and the surface of the rubber tube 5, making it easier to insert the air supply pipe 2 that wraps around the rubber tube 5 during assembly.

[0041] In a further embodiment of this solution, as described in Example 6, a support tube that mates with the arc-shaped plate 6 is fitted onto the rubber tube 5. The support tube has several sections and is fixed to the rubber tube 5 by means of gluing or other methods. After assembly, the arc-shaped plate 6 rests against the outer wall of the support tube, and the support tube provides support to prevent the arc-shaped plate 6 from directly pressing against the rubber tube 5, which could cause local deformation and affect the air leakage isolation effect.

[0042] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and application concept of this application, should be included within the scope of protection of this application.

[0043] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0044] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A bio natural gas delivery pipeline structure, characterized by, The application relates to a heat-preservation protective pipe (1) and an internal gas conveying pipe (2), wherein the outer surface of the gas conveying pipe (2) is provided with a gas leakage isolation pipe, the gas leakage isolation pipe comprises a gas-permeable layer (3) attached to the surface of the gas conveying pipe (2), the surface of the gas-permeable layer (3) is uniformly provided with a plurality of elastic rubber blocks (4), the top ends of the rubber blocks (4) are jointly connected with a rubber pipe (5), the rubber pipe (5) is sealed between the two ends and the surface of the gas conveying pipe (2), the rubber pipe (5) is internally provided with a natural gas leakage detector, the natural gas leakage detector is electrically connected with an alarm, the surface of the rubber pipe (5) is annularly provided with a plurality of arc-shaped plates (6), and the arc-shaped plates (6) and the inner wall of the heat-preservation protective pipe (1) are fixedly connected with supporting rods (7).

2. A bio natural gas transfer line structure according to claim 1, characterized in that, The heat-preservation protective pipe (1) comprises an outer glass fiber reinforced plastic pipe (101), an intermediate heat-preservation layer (102) and an inner sleeve pipe (103).

3. A bio natural gas transfer line structure according to claim 1, characterized in that, The gas leakage isolation pipe is provided with a plurality of sections, and the rubber pipe (5) of each section of the gas leakage isolation pipe is sealed with the surface of the gas conveying pipe (2).

4. A bio natural gas transfer line structure according to claim 1, characterized in that, An oil and hemp layer (8) and an asphalt paste (9) are arranged between the port of the rubber pipe (5) and the gas conveying pipe (2) from inside to outside.

5. A bio natural gas transfer line structure according to claim 1, wherein The inner edge surface of the arc-shaped plate (6) is uniformly provided with a plurality of circular protrusions.

6. A bio natural gas transfer line structure according to claim 1, characterized in that, A supporting pipe matched with the arc-shaped plate (6) is sleeved on the rubber pipe (5).

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