CN111322525A - Underground pipeline detection method - Google Patents
Underground pipeline detection method Download PDFInfo
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- CN111322525A CN111322525A CN202010293314.0A CN202010293314A CN111322525A CN 111322525 A CN111322525 A CN 111322525A CN 202010293314 A CN202010293314 A CN 202010293314A CN 111322525 A CN111322525 A CN 111322525A
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- conducting layer
- underground pipeline
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- lead
- noise area
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- Acoustics & Sound (AREA)
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Abstract
The invention discloses an underground pipeline detection method, wherein an inner conducting layer (1) and an outer conducting layer (2) are embedded into an underground pipeline passing through a noise area, two conducting leads (3) are led out from the end part of the underground pipeline passing through the noise area, one end of each lead (3) is arranged on the ground surface, one lead (3) is connected with the inner conducting layer (1), the other lead (3) is connected with the outer conducting layer (2), and the position of a water leakage point is determined by measuring the resistance (6) value between the two leads (3). The method has the advantage of easily determining the water leakage point of the underground pipeline passing through the noise area, and can reduce the maintenance frequency of the underground pipeline and reduce the waste of water resources.
Description
Technical Field
The invention belongs to the field of underground water supply pipeline detection, and particularly relates to an underground water supply pipeline detection method.
Background
Urban water is generally supplied by depending on a reservoir, the reservoir water is conveyed to a city through an underground pipeline, the underground pipeline is easily broken due to the influence of geological settlement and other reasons, water leakage is caused, maintenance is needed in time, maintenance personnel are needed to detect a water leakage point firstly, the position of the water leakage point is determined firstly, and then soil is broken to maintain the underground pipeline. The existing detection method is to determine the position of a water leakage point through an audio-visual leak detection method, namely an electronic audio-visual leak detector or an automatic noise recorder is used for detecting the water leakage sound of the water leakage point so as to determine the position of the water leakage point, the method has obvious effect and high detection speed, but still has some problems mainly because the distance between a city and a reservoir is long, underground pipelines inevitably pass through noise areas with large water flow sound such as rivers, underground water flows, gorge valley flows and the like, the water flow sound of the noise areas is close to the water leakage sound frequency of the water leakage point, so that the electronic audio-visual leak detector or the automatic noise recorder is interfered, and a maintainer cannot determine the specific position of the water leakage point. Therefore, the existing detection method has the defect that the water leakage point of the underground pipeline passing through the noise area is difficult to determine.
Disclosure of Invention
The invention aims to provide an underground pipeline detection method. The method has the advantage of easily determining the water leakage point of the underground pipeline passing through the noise area, and can reduce the maintenance frequency of the underground pipeline and reduce the waste of water resources.
The technical scheme of the invention is as follows: an underground pipeline detecting method includes embedding an inner conducting layer and an outer conducting layer in an underground pipeline passing through a noise area, leading out two conducting leads at the end of the underground pipeline passing through the noise area, enabling one end of each lead to be arranged on the ground surface, enabling one lead to be connected with the inner conducting layer and the other lead to be connected with the outer conducting layer, and determining the position of a water leakage point by measuring the resistance value between the two leads.
In the underground pipeline detecting method, the structure of the underground pipeline passing through the noise area comprises an inner conducting layer and an outer conducting layer, and plastic insulating layers are arranged on two sides of the inner conducting layer and two sides of the outer conducting layer.
In the underground pipeline detection method, the inner conducting layer and the outer conducting layer are formed by serially connecting and splicing a plurality of steel wire sleeves, the adjacent steel wire sleeves are serially connected with a resistor, and the diameter of a gap on each steel wire sleeve is less than 3 mm.
In the underground pipeline detection method, the distance between adjacent resistors is 1-2 m.
In the underground pipeline detecting method, the inner conductive layer and the outer conductive layer are integrally formed in the underground pipeline by extrusion molding.
In the underground pipeline detection method, the steel wire sleeve is formed by weaving passivated steel wires, and the steel wires are twisted with the twist of 30-50 r/m.
Compared with the prior art, the inner conducting layer and the outer conducting layer are arranged in the underground pipeline passing through the noise area, the two conducting layers are respectively led out to the ground surface through the two leads, when a maintenance worker detects the water leakage point of the underground pipeline passing through the noise area, only the resistance between the two leads needs to be measured, when the underground pipeline passing through the noise area is not damaged, the two conducting layers are not conducted, the resistance value between the two leads is infinite, and the underground pipeline passing through the noise area has no water leakage point; when the underground pipeline through the noise area takes place the damage, switch on by water between two-layer conducting layer to making the maintenance personal can measure the resistance value of a concrete numerical value between two lead wires, according to this resistance value and per meter resistance value of conducting layer, can learn the distance of leaking water point apart from the lead wire, combine the underground pipeline trend map of water works record, the maintenance personal can learn the position of leaking water point. The invention is not interfered by external factors in the measuring process, and has the advantage of easily determining the water leakage point of the underground pipeline passing through the noise area.
There is flowing water in the noise district, and the soil property is moist, takes place to subside easily to lead to pipeline's the fracture to leak, the pipeline through the noise district is the high region that takes place the water leakage point, through embedding the conducting layer of constituteing by the steel wire cover in the pipeline, very big reinforcing the pipeline's through the noise district intensity, reduce the pipeline and take place the probability of leaking, reduced maintenance frequency, reduced the waste of water resource. The steel wire sleeve woven by the twisted steel wires has good elasticity, so that the ductility and the flexibility of the underground pipeline passing through the noise area are improved, the possibility that the underground pipeline is broken when soil is settled is avoided, the probability of water leakage of the underground pipeline is reduced, the maintenance frequency is reduced, and the waste of water resources is reduced.
Therefore, the invention has the advantage of easily determining the water leakage point of the underground pipeline passing through the noise area, and can reduce the maintenance frequency of the underground pipeline and reduce the waste of water resources.
Drawings
FIG. 1 is an elevation view of an underground utility passing through a noise zone.
The labels in the figures are: 1-inner conducting layer, 2-outer conducting layer, 3-lead, 4-plastic insulating layer, 5-steel wire sleeve and 6-resistor.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Examples are given. An underground pipeline detection method is characterized in that as shown in the figure 1, an inner conducting layer 1 and an outer conducting layer 2 are embedded in an underground pipeline passing through a noise area, two conducting lead wires 3 are led out from the end part of the underground pipeline passing through the noise area, one ends of the lead wires 3 are arranged on the ground surface, one lead wire 3 is connected with the inner conducting layer 1, the other lead wire 3 is connected with the outer conducting layer 2, and the position of a water leakage point is determined by measuring the resistance 6 value between the two lead wires 3.
The underground pipeline passing through the noise area structurally comprises an inner conducting layer 1 and an outer conducting layer 2, and plastic insulating layers 4 are arranged on two sides of the inner conducting layer 1 and two sides of the outer conducting layer 2.
The inner conducting layer 1 and the outer conducting layer 2 are formed by serially connecting and splicing a plurality of steel wire sleeves 5, a resistor 6 is serially connected between every two adjacent steel wire sleeves 5, and the diameter of a gap on each steel wire sleeve 5 is smaller than 3 mm.
The distance between adjacent resistors 6 is 1-2 m.
The inner conducting layer 1 and the outer conducting layer 2 are integrally formed in the underground pipeline in an extrusion molding mode.
The steel wire sleeve 5 is formed by weaving passivated steel wires, and the steel wires are twisted with the twist of 30, 40 or 50 r/m.
The working principle is as follows: assuming that an underground pipeline passing through a noise area is broken to generate a water leakage point, the inner conductive layer 1 and the outer conductive layer 2 are conducted at the broken position, the resistance value between two leads 3 is measured to be A, the distance between adjacent resistors 6 is assumed to be B, the resistance value of a single resistor 6 is assumed to be C, A/C resistors are shared between the two leads 3, and the distance between the water leakage point and the leads is (A & B)/(2 & C). By combining with the trend chart of underground pipelines recorded in the water works, the maintenance personnel can know the position of the water leakage point.
The method has the advantage of easily determining the water leakage point of the underground pipeline passing through the noise area, and can reduce the maintenance frequency of the underground pipeline and reduce the waste of water resources.
Claims (6)
1. An underground pipeline detection method is characterized in that: the underground pipeline passing through the noise area is internally embedded with an inner conductive layer (1) and an outer conductive layer (2), two conductive leads (3) are led out from the end part of the underground pipeline passing through the noise area, one end of each lead (3) is arranged on the ground surface, one lead (3) is connected with the inner conductive layer (1), the other lead (3) is connected with the outer conductive layer (2), and the position of a water leakage point is determined by measuring the value of resistance (6) between the two leads (3).
2. The underground utility detecting method according to claim 1, wherein: the underground pipeline passing through the noise area structurally comprises an inner conducting layer (1) and an outer conducting layer (2), and plastic insulating layers (4) are arranged on two sides of the inner conducting layer (1) and the outer conducting layer (2).
3. The underground utility detecting method according to claim 2, wherein: the inner conducting layer (1) and the outer conducting layer (2) are formed by serially connecting and splicing a plurality of steel wire sleeves (5), a resistor (6) is serially connected between every two adjacent steel wire sleeves (5), and the diameter of a gap on each steel wire sleeve (5) is smaller than 3 mm.
4. The underground utility detecting method according to claim 3, wherein: the distance between the adjacent resistors (6) is 1-2 m.
5. The underground utility detecting method according to claim 3, wherein: the inner conducting layer (1) and the outer conducting layer (2) are integrally formed in the underground pipeline in an extrusion molding mode.
6. The underground utility detecting method according to claim 3, wherein: the steel wire sleeve (5) is formed by weaving passivated steel wires, and the steel wires are twisted with the twist of 30-50 r/m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010293314.0A CN111322525B (en) | 2020-04-15 | 2020-04-15 | Underground pipeline detection method |
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| CN202010293314.0A CN111322525B (en) | 2020-04-15 | 2020-04-15 | Underground pipeline detection method |
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| CN111322525A true CN111322525A (en) | 2020-06-23 |
| CN111322525B CN111322525B (en) | 2022-02-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483907A (en) * | 2020-11-10 | 2021-03-12 | 深圳市祥为测控技术有限公司 | Pipeline leakage detection system and method |
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| CN103328946A (en) * | 2011-08-05 | 2013-09-25 | 俞洪根 | Device for detecting an oil leak |
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| CN112483907A (en) * | 2020-11-10 | 2021-03-12 | 深圳市祥为测控技术有限公司 | Pipeline leakage detection system and method |
| CN112483907B (en) * | 2020-11-10 | 2022-02-11 | 深圳市祥为测控技术有限公司 | Pipeline leakage detection system and method |
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|---|---|
| CN111322525B (en) | 2022-02-08 |
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