CN212960937U

CN212960937U - Photoelectric integrated double-parameter sensor

Info

Publication number: CN212960937U
Application number: CN202021723299.0U
Authority: CN
Inventors: 刘畅; 张平松; 郭立全; 孙斌杨; 欧元超; 邱实; 王琼
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-04-13
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses a two parameter sensor of photoelectric integration, including covering the body outward, cover a side surface outward and be equipped with a plurality of word inline's electrode, cover the internal portion outward and be equipped with many copper wires, the copper wire one-to-one is connected with the electrode electricity, covers internal portion outward and has the mounting hole, and the coaxial distributing type temperature sensing optic fibre that is equipped with in the mounting hole, distributing type temperature sensing optic fibre has ointment layer, steel pipe, waterproof layer outward in proper order, and the waterproof layer outer loop is around having a plurality of wires, by each wire of pore wall centre gripping of mounting hole. The utility model discloses bury underground simply, its test parameter includes temperature and resistivity, monitors burying ground gas pipeline through multi-angle many parameters, has avoided single test method to receive external disturbance, and the safety monitoring who buries ground gas pipeline is fit for very much new era.

Description

Photoelectric integrated double-parameter sensor

Technical Field

The utility model relates to a gas pipeline leakage monitoring sensor field specifically is a two reference sensors of photoelectric integration.

Background

The use of pipelines for transporting gas and oil has become one of the main transportation modes in the world, and pipeline transportation is spread over various important fields in daily life of people. The pipeline gas transmission mostly adopts a high-pressure mode, which has high requirements on the safety quality of the pipeline. However, some severe and complex geological environments threaten the safety of pipelines all the time, and once leakage occurs, if positioning and remediation cannot be carried out in time, environmental damage and property loss can be brought. To avoid this, the natural gas pipeline must be monitored effectively in time.

At present, most of sensors for monitoring gas pipeline leakage are data acquisition of single parameters, multi-parameter contrastive analysis cannot be carried out, and effective positioning cannot be carried out according to test results. For solving the problem, the utility model provides a two parameter sensor of optoelectronic integration.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a two parameter sensor of photoelectric integration has advantages such as tensile pressure deformation, high accuracy, many parameterizations to solve prior art and bury the problem that the ground gas pipeline leaks and lack quick effective monitoring.

In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:

the utility model provides a two parameter sensor of optoelectronic integration which characterized in that: comprises an outer covering body, a plurality of electrodes which are arranged in a straight line are arranged on the surface of one side of the outer covering body, the electrode parts are exposed in the air, a plurality of copper wires are arranged at one side of the inner part of the outer covering body, which is close to the electrodes, the number of the copper wires is consistent with that of the electrodes, the axial direction of the copper wires is respectively parallel to the straight lines of the arrangement of the electrodes, the copper wires are electrically connected with the electrodes in a one-to-one correspondence mode, mounting holes are formed in the outer covering body, the mounting holes are axially parallel to straight lines of the arrangement of the electrodes, distributed temperature sensing optical fibers are coaxially arranged in the mounting holes, an ointment layer is coated on the surfaces of the distributed temperature sensing optical fibers, a steel pipe is coaxially sleeved outside the ointment layer, a waterproof layer is arranged on the surface of the steel pipe, a plurality of metal wires are wound outside the waterproof layer, the axial direction of each metal wire is respectively parallel to the axial direction of the distributed temperature sensing optical fibers, the metal wires are closely arranged in the annular direction, and the metal wires are clamped by the hole walls of.

The photoelectric integrated double-parameter sensor is characterized in that: the outer cover is made of high density polyethylene. The waterproof layer is waterproof paint or a polyethylene plastic coating.

The photoelectric integrated double-parameter sensor is characterized in that: each electrode is respectively connected with the side surface of the outer covering body in a seamless mode, the outer surface of each electrode is an arc surface, the arc surface protrudes out relative to the side surface of the outer covering body where the electrode is located, and the arc surfaces are respectively coated with an anti-oxidation metal coating.

The photoelectric integrated double-parameter sensor is characterized in that: the electrode distance between two adjacent electrodes is fixed and is determined according to the requirement, and a plurality of electrodes are combined to form an electrode string; the copper wire is used for connecting the electrode and an external power supply, or the copper wire receives current generated by the electrode.

The photoelectric integrated double-parameter sensor is characterized in that: and an insulating layer which is wholly insulated and covers the plurality of metal wires and is filled between the adjacent metal wires is arranged in the outer covering body.

The photoelectric integrated double-parameter sensor is characterized in that: the side face position of the outer covering body corresponding to one end of the straight line of the electrode arrangement is further provided with a first interface and a second interface, the first interface is connected with the axial end corresponding to the distributed temperature sensing optical fiber, and the second interface is connected with the axial end corresponding to each copper wire.

The photoelectric integrated double-parameter sensor is characterized in that: the inner parts of the four corners of the outer covering body are respectively provided with steel wires, the axial direction of each steel wire is parallel to the axial direction of the distributed temperature sensing optical fiber, and the steel wires play a role in supporting and protecting the inner parts of the outer covering body.

Compared with the prior art, the utility model discloses the advantage does:

the utility model provides a photoelectric integrated double-parameter sensor, which is very important for monitoring the safety of a pipeline accurately; the buried gas pipeline is easy to bury, the testing parameters comprise temperature and resistivity, the buried gas pipeline is monitored through multiple angles and multiple parameters, and the condition that a single testing method is interfered by the outside world to provide wrong pipeline safety information is avoided; the novel sensor is not easy to corrode, simple to maintain, convenient to install, high in testing precision and suitable for safety monitoring of buried gas pipelines in a new era, and multi-parameter real-time monitoring is achieved.

Drawings

Fig. 1 is a schematic diagram of an internal structure of a photoelectric integrated dual-parameter sensor.

FIG. 2 is a schematic diagram of the electrode distribution and joint profile of the resistivity test circuit.

Fig. 3 is a flow chart of the working principle.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1 and 2, a photoelectric integrated dual-parameter sensor comprises an outer cover 10 made of high-density polyethylene, a plurality of electrodes 8 arranged in a straight line are arranged on the surface of one side of the outer cover 10, a part of the electrodes 8 are exposed in the air, a plurality of copper wires 6 are arranged in the outer cover 10 close to one side of the electrodes, the number of the copper wires 6 is consistent with that of the electrodes 8, the copper wires 6 are axially parallel to the straight lines of the electrodes 8 respectively, the copper wires 6 are electrically connected with the electrodes 8 in a one-to-one correspondence manner, a mounting hole is arranged in the outer cover 10, the mounting hole is axially parallel to the straight lines of the electrodes 8, a distributed temperature sensing optical fiber 1 is coaxially arranged in the mounting hole, an ointment layer 2 is coated on the surface of the distributed temperature sensing optical fiber 1, a steel pipe 3 is coaxially sleeved outside the ointment layer 2, a waterproof layer 4 is arranged on the surface of the steel pipe 3, the axial direction of each metal wire 5 is respectively parallel to the axial direction of the distributed temperature sensing optical fiber 1, the plurality of metal wires 5 are closely arranged in the annular direction, and the metal wires 5 are clamped by the hole wall of the mounting hole.

Each electrode 8 is respectively connected with the side surface of the outer covering body 10 in a seamless mode, the outer surface of each electrode 8 is an arc surface, the arc surface protrudes out relative to the side surface of the outer covering body where the electrode 8 is located, the arc surface is coated with an anti-oxidation metal coating and extends into a soil layer from the arc surface so as to collect resistivity data, increase the coupling degree of the sensor and surrounding media, probe the resistivity change response characteristic of a leakage area and provide pipeline safety information from the resistivity field change response characteristic.

The electrode distance between two adjacent electrodes 8 is fixed, and the electrode distance is determined according to the requirement and is generally between 1 and 5 m; the plurality of electrodes 8 are combined to form an electrode string; the copper wire 6 is used to connect the electrode 8 with an external power supply, or the copper wire 6 receives the current generated by the electrode. The waterproof layer 4 is a waterproof coating or a polyethylene plastic coating.

The outer cover 10 is provided with an insulating layer 7 which covers the plurality of wires 5 in an insulating manner and fills the space between the adjacent wires 5.

The outer covering body 10 is further provided with a first interface 11 and a second interface 12 corresponding to the side face of one end of the straight line where the electrodes 8 are arranged, wherein the first interface 11 is connected with the axial end corresponding to the distributed temperature sensing optical fiber 1, and the second interface 12 is connected with the axial end corresponding to each copper wire 6.

The steel wires 9 are respectively arranged inside four corners of the outer covering body 10, the steel wires 9 are axially parallel to the axial direction of the distributed temperature sensing optical fiber 1, and the steel wires 9 play a supporting and protecting role inside the outer covering body 10.

The utility model discloses inside contains two distributed temperature sensing optical fiber 1, its outer 4 parcels of oleamen 2, steel pipe 3 and waterproof layer of using in order, its 5 protections of reuse wire, based on laser pulse produces raman scattering and OTDR technique in the transmission of optic fibre, real-time data acquisition, temperature measuring accuracy can reach 0.1 ℃, can provide the temperature information of any point on the optic fibre, through catching the change that gas pipeline leaked and brought ambient temperature, confirm the leakage position and the scale of pipeline.

The utility model also comprises a plurality of copper wires 6, the outside of the copper wires is wrapped by an insulating layer 7, and each copper wire 6 is connected with an electrode 8 in a one-to-one correspondence way; when the electrode 8 is connected to the resistivity survey circuit, it is used to scan the earth resistivity.

FIG. 2 is a schematic diagram of the electrode distribution and connections of the resistivity testing circuit; the electrode 8 is controlled and connected by an internal copper wire, and plays a role in resistivity test; the electrode distance between the electrodes 8 depends on the actual situation, and the number of the electrodes can be flexibly changed; the first interface 11 is used for connecting the distributed temperature sensing optical cable and the DTS demodulator; the second interface 12 is used to connect the resistivity test circuit to an electrical meter.

As shown in fig. 3, when the utility model works, the distributed temperature sensing optical fiber 1 senses the temperature field change around the pipeline under the protection condition, and meanwhile, the resistivity CT exploration circuit is contacted with the soil body by the electrode 8 to explore the resistivity; the temperature field and resistivity field response characteristics are combined to give a leak report.

The effect on each part is explained as follows:

1-distributed temperature sensing fiber: the optical frequency change caused by temperature mainly plays a role in sensing and testing;

2-ointment: the main protection function is achieved;

3-steel pipe: the optical frequency in the optical fiber is mainly influenced by temperature and stress, and the steel pipe can play a role in removing stress, so that the fiber core is only influenced by temperature;

4-waterproof layer: the material can be a polyethylene material, has the functions of conducting outside temperature and resisting water, and has a protection effect on an internal structure;

5-wire: the functions of connection and protection are achieved;

6-copper wire: the electric testing part plays a role in conducting current;

7-insulating layer: a good test environment is provided for the internal electrical method test;

8-electrode: the electrode can be used as a power supply electrode or a receiving electrode in the electrical method test to participate in the electrical method test;

9-steel wire: the functions of supporting and protecting are achieved;

10-high density polyethylene material, the dense material makes the sensor core part resist external interference, reaches the purpose of stable test.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a two parameter sensor of optoelectronic integration which characterized in that: comprises an outer covering body, a plurality of electrodes which are arranged in a straight line are arranged on the surface of one side of the outer covering body, the electrode parts are exposed in the air, a plurality of copper wires are arranged at one side of the inner part of the outer covering body, which is close to the electrodes, the number of the copper wires is consistent with that of the electrodes, the axial direction of the copper wires is respectively parallel to the straight lines of the arrangement of the electrodes, the copper wires are electrically connected with the electrodes in a one-to-one correspondence mode, mounting holes are formed in the outer covering body, the mounting holes are axially parallel to straight lines of the arrangement of the electrodes, distributed temperature sensing optical fibers are coaxially arranged in the mounting holes, an ointment layer is coated on the surfaces of the distributed temperature sensing optical fibers, a steel pipe is coaxially sleeved outside the ointment layer, a waterproof layer is arranged on the surface of the steel pipe, a plurality of metal wires are wound outside the waterproof layer, the axial direction of each metal wire is respectively parallel to the axial direction of the distributed temperature sensing optical fibers, the metal wires are closely arranged in the annular direction, and the metal wires are clamped by the hole walls of.

2. The optoelectronic integrated dual parameter sensor of claim 1, wherein: the outer covering body is made of high-density polyethylene material, and the waterproof layer is waterproof paint or a polyethylene plastic coating.

3. The optoelectronic integrated dual parameter sensor of claim 1, wherein: each electrode is respectively connected with the side surface of the outer covering body in a seamless mode, the outer surface of each electrode is an arc surface, the arc surface protrudes out relative to the side surface of the outer covering body where the electrode is located, and the arc surfaces are respectively coated with an anti-oxidation metal coating.

4. The optoelectronic integrated dual parameter sensor of claim 1, wherein: the electrode distance between two adjacent electrodes is fixed and is determined according to the requirement, and a plurality of electrodes are combined to form an electrode string; the copper wire is used for connecting the electrode and an external power supply, or the copper wire receives current generated by the electrode.

5. The optoelectronic integrated dual parameter sensor of claim 1, wherein: and an insulating layer which is wholly insulated and covers the plurality of metal wires and is filled between the adjacent metal wires is arranged in the outer covering body.

6. The optoelectronic integrated dual parameter sensor of claim 1, wherein: the side face position of the outer covering body corresponding to one end of the straight line of the electrode arrangement is further provided with a first interface and a second interface, the first interface is connected with the axial end corresponding to the distributed temperature sensing optical fiber, and the second interface is connected with the axial end corresponding to each copper wire.

7. The optoelectronic integrated dual parameter sensor of claim 1, wherein: the inner parts of the four corners of the outer covering body are respectively provided with steel wires, the axial direction of each steel wire is parallel to the axial direction of the distributed temperature sensing optical fiber, and the steel wires play a role in supporting and protecting the inner parts of the outer covering body.