CN111637280A - Trenchless positioning system for buried polyethylene pipe for natural gas transmission and application method - Google Patents
Trenchless positioning system for buried polyethylene pipe for natural gas transmission and application method Download PDFInfo
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- CN111637280A CN111637280A CN202010445201.8A CN202010445201A CN111637280A CN 111637280 A CN111637280 A CN 111637280A CN 202010445201 A CN202010445201 A CN 202010445201A CN 111637280 A CN111637280 A CN 111637280A
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- Prior art keywords
- pipeline
- audio
- trenchless
- polyethylene pipe
- natural gas
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
- F16L1/11—Accessories therefor, e.g. anchors for the detection or protection of pipes in the ground
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
- G01S1/76—Systems for determining direction or position line
- G01S1/78—Systems for determining direction or position line using amplitude comparison of signals transmitted from transducers or transducer systems having differently-oriented characteristics
- G01S1/786—Systems for determining direction or position line using amplitude comparison of signals transmitted from transducers or transducer systems having differently-oriented characteristics the signals being transmitted simultaneously
Abstract
The invention discloses a natural gas transmission underground polyethylene pipe trenchless positioning system which comprises two groups of audio drivers, transmitters and receivers, wherein the two groups of audio drivers and the two groups of transmitters are respectively positioned at the interfaces at the two ends of a gas PE pipeline, the audio drivers are connected to the corresponding transmitters through cables, the transmitters control the audio drivers to transmit sound signals, the receivers receive the signals, and the sound signals transmitted by the two audio drivers have different audio frequencies. The invention has the advantages that: by utilizing a sound wave vibration principle, after the two ends of a gas PE pipeline are accessed through a transmitting device, two sound wave signals with different frequencies are applied to the pipeline, the receiving device is matched to receive the corresponding sound wave signals at the far end, and the position and the trend of the pipeline are positioned by digitally displaying and monitoring the strength point of the maximum signal on the ground; the gas in the pipe is replaced by water, so that the sound wave transmission capability is enhanced, sound wave signals can be received better, and the accuracy of positioning the pipeline is improved; the method is simple to operate, rapid in positioning and high in accuracy.
Description
Technical Field
The invention relates to a buried polyethylene pipe trenchless positioning system for natural gas transmission and distribution and an application method, and belongs to the technical field of pipeline positioning.
Background
At present, the gas pipeline laying process has the problems that newly-built pipeline information is relatively perfect, a piece of paint black is laid in the early stage, ground identification is not consistent with reality, building pressure is violated, rough construction is conducted, potential safety hazards are great and the like.
Disclosure of Invention
The invention aims to solve the technical problem of providing a non-excavation positioning system for a buried polyethylene pipe for natural gas transmission and an application method.
The invention is realized by the following scheme: natural gas transmission is with burying non-excavation positioning system of polyethylene pipe, it includes audio driver, transmitter and receiver, audio driver and transmitter are equipped with two sets ofly, are located the both ends kneck of gas PE pipeline respectively, the audio driver passes through cable conductor connection to the transmitter that corresponds, the transmitter control the audio driver transmission sound signal, receiver received signal, two the sound signal audio frequency of audio driver transmission is different.
The non-excavation positioning application method of the buried polyethylene pipe for natural gas transmission is carried out according to the following steps:
firstly, finding two end interfaces of a gas PE pipeline;
step two, respectively installing an audio driver at the interfaces at the two ends;
step three, discharging gas in the gas PE pipeline;
injecting liquid into the gas PE pipeline;
step five, the transmitter transmits signals;
and step six, the receiver receives signals and starts positioning detection.
The non-excavation positioning application method of the buried polyethylene pipe for natural gas transmission is carried out according to the following steps:
firstly, finding two end interfaces of a gas PE pipeline;
step two, respectively installing an audio driver at the interfaces at the two ends;
step three, discharging gas in the gas PE pipeline;
injecting liquid into the gas PE pipeline;
opening a full main valve of the gas PE pipeline;
step six, leakage detection is carried out;
step seven, the transmitter transmits signals;
and step eight, the receiver receives the signal and starts positioning detection.
The audio drivers are connected to corresponding transmitters through cable wires, the transmitters control the audio drivers to transmit sound signals, and the sound signals transmitted by the two audio drivers are different in audio frequency.
Two of the audio drivers, one transmitting high frequency signals and one transmitting low frequency signals.
The liquid injected in the fourth step is water.
The receiver comprises an audio analyzer, an audio amplifier and a sound pick-up, wherein the sound pick-up moves on the ground, signals received by the sound pick-up are transmitted to the audio analyzer through the audio amplifier, and the audio analyzer is connected with an earphone.
The transmitter is provided with 3 detection modes: frequency conversion, constant frequency, pulse, 6 center frequencies: 200Hz, 300Hz, 400Hz, 500Hz, 600Hz, 800 Hz; 4 kinds of power output: 5W, 10W, 30W and 50W.
The method for positioning the pipeline position adopted in the positioning detection in the sixth step is as follows:
step a: displaying and comparing data of the audio analyzer;
step b: the earphone feeds back the sound signal for comparison;
c, transversely cutting at least 3 points of the pipeline to determine a signal central point, namely a signal strongest point;
step d: the resulting points are connected together as an average line.
When the pipeline to be detected is suspected to be a bent pipeline, the last signal strongest point is taken as a base point, and whether the pipeline is bent and turned or not is detected by transversely cutting the pipeline in front; when the position of the tee joint needs to be detected, drawing a circle at the suspected tee joint position to confirm the tee joint position.
The invention has the beneficial effects that:
1. the invention utilizes the sound wave vibration principle, after the two ends of the gas PE pipeline are accessed through the transmitting device, two sound wave signals with different frequencies are applied to the pipeline, the receiving device is matched to receive the corresponding sound wave signals at the far end, and the position and the trend of the pipeline are positioned through digital display and monitoring of the intensity point of the maximum signal on the ground;
2. the invention replaces the gas in the pipe with water, thereby enhancing the sound wave transmission capability, facilitating better receiving sound wave signals and further improving the accuracy of positioning the pipeline;
3. the invention has the advantages of simple operation, rapid positioning, high accuracy and low cost.
Drawings
Fig. 1 is a schematic structural view of a buried polyethylene pipe trenchless positioning system for natural gas transmission.
Fig. 2 is a schematic flow chart of the trenchless positioning application method of the buried polyethylene pipe for natural gas transmission.
In the figure: 1 is gas PE pipeline, 2 is audio driver, 3 is the transmitter, 4 is audio analyzer, 5 is the audio amplifier, 6 is the adapter.
Detailed Description
The invention is further described below with reference to fig. 1-2, without limiting the scope of the invention.
In the following description, for purposes of clarity, not all features of an actual implementation are described, well-known functions or constructions are not described in detail since they would obscure the invention with unnecessary detail, it being understood that in the development of any actual embodiment, numerous implementation details must be set forth in order to achieve the developer's specific goals, such as compliance with system-related and business-related constraints, changing from one implementation to another, and it being recognized that such development effort might be complex and time consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art.
Natural gas transmission is with burying non-excavation positioning system of polyethylene pipe, it includes audio driver 2, transmitter 3 and receiver, and audio driver 2 and transmitter 3 are equipped with two sets ofly, are located the both ends kneck of gas PE pipeline 1 respectively, and audio driver 2 is through cable connection to the transmitter 3 that corresponds, and the sound signal of 2 transmission of transmitter 3 control audio driver, receiver received signal, the sound signal audio frequency of two audio driver 2 transmissions is different.
The non-excavation positioning application method of the buried polyethylene pipe for natural gas transmission is carried out according to the following steps:
firstly, finding two end interfaces of a gas PE pipeline 1;
step two, respectively installing an audio driver 2 at the interfaces at the two ends;
step three, discharging gas in the gas PE pipeline 1;
injecting liquid into the gas PE pipeline 1, wherein the liquid is water;
step five, opening a full main valve of the gas PE pipeline 1;
step six, leakage detection is carried out;
step seven, the transmitter 3 transmits signals;
and step eight, the receiver receives the signal and starts positioning detection.
The audio drivers 2 are connected to corresponding transmitters 3 through cable wires, the transmitters 3 control the audio drivers 2 to emit sound signals, and the sound signals emitted by the two audio drivers 2 are different in audio frequency.
Two audio drivers 2, one transmitting high frequency signals and one transmitting low frequency signals.
The receiver comprises an audio analyzer 4, an audio amplifier 5 and a sound pick-up 6, wherein the sound pick-up 6 moves on the ground, signals received by the sound pick-up 6 are transmitted to the audio analyzer 4 through the audio amplifier 5, and the audio analyzer 4 is connected with an earphone.
The transmitter 3 is provided with 3 detection modes: frequency conversion, constant frequency, pulse, 6 center frequencies: 200Hz, 300Hz, 400Hz, 500Hz, 600Hz, 800 Hz; 4 kinds of power output: 5W, 10W, 30W and 50W.
The method for positioning the pipeline position adopted by the positioning detection in the sixth step is as follows:
step a: the data of the audio analyzer 4 is displayed and compared;
step b: the earphone feeds back the sound signal for comparison;
c, transversely cutting at least 3 points of the pipeline to determine a signal central point, namely a signal strongest point;
step d: the resulting points are connected together as an average line.
When the pipeline to be detected is suspected to be a bent pipeline, the last signal strongest point is taken as a base point, and whether the pipeline is bent and turned or not is detected by transversely cutting the pipeline in front; when the position of the tee joint needs to be detected, drawing a circle at the suspected tee joint position to confirm the tee joint position.
After the positioning is finished, the method sequentially comprises the following steps: shutting down the equipment, closing the main valve, draining water, dismantling the audio device, resetting the valve and resetting the equipment.
Although the invention has been described and illustrated in some detail, it should be understood that various modifications may be made to the described embodiments or equivalents may be substituted, as will be apparent to those skilled in the art, without departing from the spirit of the invention.
Claims (10)
1. Natural gas transmission is with burying ground polyethylene pipe non-excavation positioning system, its characterized in that: it includes audio driver (2), transmitter (3) and receiver, audio driver (2) and transmitter (3) are equipped with two sets ofly, are located the both ends kneck of gas PE pipeline (1) respectively, audio driver (2) are connected to corresponding transmitter (3) through the cable conductor, transmitter (3) control audio driver (2) transmission sound signal, the receiver received signal, two the sound signal audio frequency of audio driver (2) transmission is different.
2. The trenchless positioning application method of the buried polyethylene pipe for natural gas transmission is characterized by comprising the following steps: the method comprises the following steps:
firstly, finding two end interfaces of a gas PE pipeline (1);
step two, respectively installing an audio driver (2) at the interfaces at the two ends;
step three, discharging gas in the gas PE pipeline (1);
injecting liquid into the gas PE pipeline (1);
step five, the transmitter (3) transmits signals;
and step six, the receiver receives signals and starts positioning detection.
3. The trenchless positioning application method of the buried polyethylene pipe for natural gas transmission according to claim 2, characterized in that: the method comprises the following steps:
firstly, finding two end interfaces of a gas PE pipeline (1);
step two, respectively installing an audio driver (2) at the interfaces at the two ends;
step three, discharging gas in the gas PE pipeline (1);
injecting liquid into the gas PE pipeline (1);
step five, opening a full main valve of the gas PE pipeline (1);
step six, leakage detection is carried out;
seventhly, the transmitter (3) transmits signals;
and step eight, the receiver receives the signal and starts positioning detection.
4. The trenchless positioning application method of the buried polyethylene pipe for natural gas transmission according to claim 2, characterized in that: the audio drivers (2) are connected to corresponding transmitters (3) through cable wires, the transmitters (3) control the audio drivers (2) to emit sound signals, and the sound signals emitted by the two audio drivers (2) are different in audio frequency.
5. The trenchless positioning application method of the buried polyethylene pipe for natural gas transmission according to claim 2, characterized in that: two of the audio drivers (2), one transmitting a high frequency signal and one transmitting a low frequency signal.
6. The trenchless positioning application method of the buried polyethylene pipe for natural gas transmission according to claim 2, characterized in that: the liquid injected in the fourth step is water.
7. The trenchless positioning application method of the buried polyethylene pipe for natural gas transmission according to claim 2, characterized in that: the receiver comprises an audio analyzer (4), an audio amplifier (5) and a sound pick-up (6), wherein the sound pick-up (6) moves on the ground, signals received by the sound pick-up (6) are transmitted to the audio analyzer (4) through the audio amplifier (5), and the audio analyzer (4) is connected with an earphone.
8. The trenchless positioning application method of the buried polyethylene pipe for natural gas transmission according to claim 2, characterized in that: the transmitter (3) is provided with 3 detection modes: frequency conversion, constant frequency, pulse, 6 center frequencies: 200Hz, 300Hz, 400Hz, 500Hz, 600Hz, 800 Hz; 4 kinds of power output: 5W, 10W, 30W and 50W.
9. The trenchless positioning application method of the buried polyethylene pipe for natural gas transmission and distribution as claimed in claim 2, characterized in that: the method for positioning the pipeline position adopted in the positioning detection in the sixth step is as follows:
step a: data display and comparison of the audio analyzer (4);
step b: the earphone feeds back the sound signal for comparison;
c, transversely cutting at least 3 points of the pipeline to determine a signal central point, namely a signal strongest point;
step d: the resulting points are connected together as an average line.
10. The trenchless positioning application method of the buried polyethylene pipe for natural gas transmission according to claim 9, characterized in that: when the pipeline to be detected is suspected to be a bent pipeline, the last signal strongest point is taken as a base point, and whether the pipeline is bent and turned or not is detected by transversely cutting the pipeline in front; when the position of the tee joint needs to be detected, drawing a circle at the suspected tee joint position to confirm the tee joint position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010445201.8A CN111637280A (en) | 2020-05-23 | 2020-05-23 | Trenchless positioning system for buried polyethylene pipe for natural gas transmission and application method |
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| CN202010445201.8A CN111637280A (en) | 2020-05-23 | 2020-05-23 | Trenchless positioning system for buried polyethylene pipe for natural gas transmission and application method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113916469A (en) * | 2021-10-25 | 2022-01-11 | 湖南普奇地质勘探设备研究院（普通合伙) | Pipeline leakage detection method and system based on gas detection |
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| WO2018081179A1 (en) * | 2016-10-24 | 2018-05-03 | Los Alamos National Security, Llc | Downhole nonlinear acoustics measurements in rock formations using dynamic acoustic elasticity and time reversal |
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