CN210426882U - Prevent natural gas leakage detection sensor of rodent - Google Patents
Prevent natural gas leakage detection sensor of rodent Download PDFInfo
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- CN210426882U CN210426882U CN201921582842.7U CN201921582842U CN210426882U CN 210426882 U CN210426882 U CN 210426882U CN 201921582842 U CN201921582842 U CN 201921582842U CN 210426882 U CN210426882 U CN 210426882U
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- supporting liner
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Abstract
The utility model relates to a natural gas leakage detection sensor for preventing rodents, which is a tubular structure formed by integrating a supporting liner tube, a breathable film sleeve and a protective layer with the same length; the supporting liner tube is uniformly provided with a plurality of rows of circular through holes as wall surface holes, and a groove pattern is arranged between every two adjacent rows of the wall surface holes; the breathable film sleeve is fixedly sleeved on the outer side of the supporting liner tube and has a rodent-resistant function; the protective layer is fixedly sleeved on the outer side of the breathable film sleeve and has the function of preventing decayed tooth animals.
Description
Technical Field
The utility model relates to a prevent rodent's natural gas leakage detection sensor relates to natural gas warehousing and transportation technical field.
Background
At present, detection methods commonly used in the aspect of natural gas pipeline leakage detection in China are pressure wave methods, infrasonic waves, optical fibers and the like, and all the detection methods have the defects of low leakage detection sensitivity, incapability of detecting conditions such as tiny leakage and permeation, high cost and the like.
In recent years, with the development of membrane science and technology, thin film detection technology is developed. The foreign membrane method detection technology starts early, develops quickly and is advanced, and China enters a quick development stage from the 80 th generation in the 20 th century. The detection tube is a specially made thin film tube, and the membrane material is characterized by selective permeability to hydrocarbon gas. And under the action of air exhaust of the vacuum pump, stable negative pressure exists in the detection pipe. If there is the natural gas of leaking around the detection tube, the natural gas can the diffusion infiltration get into the detection tube under the effect of concentration difference impetus, and the methane detection device of accessible detection tube end discerns and leaks. The detection tube method can be used for detecting tiny leakage of the natural gas pipeline. Wholly aromatic polyamide composite membranes have been commercialized at the end of the 70 s of the 20 th century. The industrial application technology research of domestic and foreign application membrane materials shows that the selective semi-permeable membrane has little research on the aspect of gas pipeline detection, firstly, the existing detection tube is buried underground and is often damaged by decayed tooth animals, and in addition, the existing detection tube is not beneficial to gas permeation, efficient transmission and detection.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model aims at providing a can improve the natural gas leakage detection sensor who prevents rodent of detecting precision and sensitivity.
In order to achieve the above object, the utility model provides a technical scheme does: a natural gas leakage detection sensor for preventing rodents is a tubular structure which is integrally formed by a supporting liner pipe, a breathable film sleeve and a protective layer, wherein the supporting liner pipe, the breathable film sleeve and the protective layer are the same in length;
the supporting liner tube is uniformly provided with a plurality of rows of circular through holes as wall surface holes, and a groove pattern is arranged between every two adjacent rows of the wall surface holes;
the breathable film sleeve is fixedly sleeved on the outer side of the supporting liner tube and has a rodent-resistant function;
the protective layer is fixedly sleeved on the outer side of the breathable film sleeve and has the function of preventing decayed tooth animals.
Preferably, the aperture of the wall surface hole is 0.5-10.00mm, and the distance between every two adjacent wall surface holes in each row is 3-10 times of the aperture of the wall surface hole; the inner diameter of the supporting liner tube is 5.0-100 mm, and the wall thickness of the supporting liner tube is 0.1-5.5 mm.
Preferably, the supporting liner tube is made of a corrosion-resistant polymer material tube, a stainless steel corrugated tube or an aluminum-plastic composite tube.
Preferably, the groove pattern is a stripe, a checkerboard, a spiral, or an additional spiral spacer wire.
Preferably, the breathable film sleeve is a polymer film tube which is added with a rat repellent and can permeate methane gas, and the wall thickness of the breathable film sleeve is 0.1-2 mm.
Preferably, the protective layer is woven by a woven material added with the rat-proof agent, and the woven material is made of tablets, fibers or stainless steel wires.
The utility model discloses owing to take above technical scheme, it has following advantage:
1. the surface of the supporting liner tube of the utility model is provided with a patterned open pore structure, and the patterns can be arranged into grooves such as bar shapes, spirals, squares, additional spiral spacing wires and the like, thus being beneficial to the passage of gas permeation transmission, improving the gas permeability and enhancing the detection sensitivity;
2. the ratproof agent is added into the breathable film sleeve and the protective layer, so that the problem of gnawing of the field rats is solved, the permeability of the sensor can be enhanced, the sensitivity of the sensor is improved, and the sensor is simple and light in structure and convenient to transport, install and lay;
to sum up, the utility model discloses can make the methane molecule see through the polymer film preferentially, and the air component then is held back, and in the methane entering sensor of enrichment to make methane concentration obtain the accumulation rapidly, do benefit to the effective detection of penetrant detection method, thereby improve detection accuracy and sensitivity.
Drawings
Fig. 1 is a schematic diagram of a layered structure of a natural gas leakage sensor (the actual sensor is a tubular structure, and the tubular structure is decomposed into a layered structure for clarity of displaying the internal structure), in which a bar pattern is arranged between two adjacent rows of wall apertures;
fig. 2 is a schematic view of the layered structure of the natural gas leakage sensor of the present invention, wherein a checkered pattern is disposed between two adjacent rows of wall apertures;
fig. 3 is a schematic view of the layered structure of the natural gas leakage sensor of the present invention, wherein an additional spiral spacer wire pattern is arranged between two adjacent rows of wall apertures;
the reference numbers in the figures are: 1. supporting liner pipe 2, air-permeable film casing 3, protective layer 11, wall surface hole 12 and groove pattern.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 to 3, the rodent-resistant natural gas leakage detection sensor provided in this embodiment is a tubular structure integrally formed by a supporting liner tube 1, a gas-permeable film casing 2 and a protective layer 3, which have the same length;
the supporting liner tube 1 adopts a patterned open pore structure, and a plurality of rows of circular through holes are uniformly arranged on the supporting liner tube 1 as wall holes 11 so as to improve the gas permeability. Specifically, the aperture of the wall surface hole 11 may be 0.5-10.00mm, the distance between every two adjacent rows of wall surface holes 11 is 3-10 times the aperture of the wall surface hole, and a groove pattern 12 such as a strip, a square, a spiral or an additional spiral spacer wire may be arranged between every two adjacent rows of wall surface holes 11, so as to facilitate gas permeation transmission, improve gas permeability, and enhance detection sensitivity. In addition, the supporting liner tube 1 can be made of one of a corrosion-resistant polymer material tube, a stainless steel corrugated tube and an aluminum-plastic composite tube, the inner diameter of the supporting liner tube 1 can be 5.0-100 mm, and the wall thickness of the supporting liner tube 1 can be 0.1-5.5 mm.
The breathable film sleeve 2 is sleeved outside the supporting liner tube 1, the breathable film sleeve 2 can be a polymer film tube which has a rodent-resistant function and can permeate methane gas, the tube diameter of the breathable film sleeve 2 is matched with the supporting liner tube 1, specifically, the wall thickness of the film sleeve 2 can be 0.1mm-2mm, wherein the decayed tooth-resistant function is that the film sleeve 2 is made of a polymer material with the rodent-resistant function, namely, a rodenticide for preventing the gnawing of a field rat is added into the polymer material, so that the gnawing problem of the field rat is solved, the permeability of the film tube can be enhanced, the sensitivity of the sensor is improved, wherein a polymer carrier rodenticide is added into the polymer material, the rodenticide needs to be dissolved firstly and then blended with the polymer material, the breathable film sleeve is prepared according to the existing pipe-making process, and the specific addition amount of the rodenticide can be selected according to actual needs, and are not limited herein.
The protective layer 3 is sleeved on the outer side of the breathable film sleeve 2, the protective layer 3 can be woven by a woven material with a rodent-resistant function, the woven material can be one of tablets, fibers and stainless steel wires, wherein the polymer carrier rodent-resistant agent for preventing the field rats from gnawing can be selected according to actual needs together with the specific dosage in the woven material, limitation is not required, the problem that the field rats gnaw and bite is solved, the permeability of the protective layer can be enhanced, and the sensitivity of the sensor is improved.
During the use, will the utility model discloses a natural gas pipe parallel laying of one or more natural gas leak testing sensor and detection (the concrete use quantity of detector can be confirmed according to the concrete service environment of natural gas, does not do the restriction here), and is connected natural gas leak testing sensor and current natural gas leak intelligent detection system, and natural gas leak intelligent detection detecting system is including equipment such as vacuum apparatus and gas concentration detector, concrete testing process:
during gas diffusion of a natural gas pipe, firstly, the protective layer 3 permeates into the breathable film casing 2, then, the gas is rapidly diffused into the pipe through wall holes and groove patterns of the supporting liner pipe 1, the supporting liner pipe 1 is rapidly diffused to the natural gas leakage intelligent detection system under the action of micro negative pressure, and the gas leakage concentration is measured. The gas-permeable thin film casing 2 has high permeability and is hydrophobic to methane gas, if methane exists around the sensor, the methane gas diffuses into the supporting liner tube 1, the gas enters the natural gas leakage intelligent detection system with the methane gas, the concentration of the methane gas is determined by a hydrocarbon detector in the natural gas leakage intelligent detection system, and if the detected concentration is larger than a specified concentration limit value, a leakage alarm is sent.
To sum up, the utility model discloses it is the leakage state that realizes direct monitoring to detect to reveal gas, rather than detecting and revealing the abnormal state who causes, in case natural gas line takes place to leak, can acquire leakage information fast, makes and leaks emergency treatment, and this system does not receive the influence of operation transient state, and sensitivity is very high.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope thereof, and although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that: numerous variations, modifications, and equivalents will occur to those skilled in the art upon reading the present application and are within the scope of the claims appended hereto.
Claims (6)
1. A natural gas leakage detection sensor for preventing rodents is characterized in that the sensor is a tubular structure which is integrally formed by a supporting liner pipe, a breathable film sleeve pipe and a protective layer, wherein the supporting liner pipe, the breathable film sleeve pipe and the protective layer are the same in length;
the supporting liner tube is uniformly provided with a plurality of rows of circular through holes as wall surface holes, and a groove pattern is arranged between every two adjacent rows of the wall surface holes;
the breathable film sleeve is fixedly sleeved on the outer side of the supporting liner tube and has a rodent-resistant function;
the protective layer is fixedly sleeved on the outer side of the breathable film sleeve and has the function of preventing decayed tooth animals.
2. The natural gas leakage detection sensor according to claim 1, wherein the aperture of the wall surface hole is 0.5-10.00mm, and the distance between two adjacent wall surface holes in each row is 3-10 times the aperture size of the wall surface hole; the inner diameter of the supporting liner tube is 5.0-100 mm, and the wall thickness of the supporting liner tube is 0.1-5.5 mm.
3. The natural gas leakage detection sensor of claim 1, wherein the support liner tube is made of a corrosion-resistant polymer material tube, a stainless steel corrugated tube or an aluminum-plastic composite tube.
4. The natural gas leak detection sensor as claimed in claim 1, wherein the groove pattern is a bar, a checkerboard, a spiral, or an additional spiral spacer wire.
5. A natural gas leakage detection sensor according to any one of claims 1 to 4, wherein a polymer thin film tube which is added with a rat poison and is permeable to methane gas is used as the air-permeable thin film tube, and the wall thickness of the air-permeable thin film tube is 0.1mm to 2 mm.
6. The natural gas leakage detection sensor according to any one of claims 1 to 4, wherein the protective layer is woven from a woven material to which a rat proofing agent is added, and the woven material is made from a sheet, a fiber or a stainless steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921582842.7U CN210426882U (en) | 2019-09-23 | 2019-09-23 | Prevent natural gas leakage detection sensor of rodent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921582842.7U CN210426882U (en) | 2019-09-23 | 2019-09-23 | Prevent natural gas leakage detection sensor of rodent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210426882U true CN210426882U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921582842.7U Active CN210426882U (en) | 2019-09-23 | 2019-09-23 | Prevent natural gas leakage detection sensor of rodent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210426882U (en) |
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2019
- 2019-09-23 CN CN201921582842.7U patent/CN210426882U/en active Active
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