阅读说明：本技术 基于磁、热、声、电、湿非开挖检测供热管道泄漏检测仪 (Heat supply pipeline leakage detector based on magnetic, thermal, acoustic, electric and wet non-excavation detection ) 是由 李力 李峻嵩 张翼鹏 范文强 李晔 陈强 冯磊 刘鹏 于 2021-02-03 设计创作，主要内容包括：本发明提供了基于磁、热、声、电、湿非开挖检测供热管道泄漏检测仪,用以解决因检测角度单一,不易快速准确判断非开挖供热管道泄漏点,从而造成时间、人力、物力浪费的问题。所述检测仪的三个排布呈三角形的金属轮安装于结构件上,拾音器与金属轮连接；数据采集中心安装于薄底板上,数据采集中心由电池电源、采集器组件、传感器组件、无线路由模块组成；采集器组件由中央处理器、弱磁采集模块、红外采集模块、音频采集模块、电场采集模块、湿度采集模块组成；传感器组件由弱磁传感器、红外温度传感器、湿度传感器组成。本发明可极大提升供热管道泄漏点判断的准确性,节省大量人力物力,提高泄漏点查找效率。(The invention provides a leakage detector for a non-excavation heat supply pipeline based on magnetic, thermal, acoustic, electric and wet detection, which is used for solving the problem that time, manpower and material resources are wasted due to the fact that a leakage point of the non-excavation heat supply pipeline is not easy to judge quickly and accurately because a detection angle is single. Three metal wheels which are arranged in a triangular shape of the detector are arranged on a structural member, and a pickup is connected with the metal wheels; the data acquisition center is arranged on the thin bottom plate and consists of a battery power supply, an acquisition device assembly, a sensor assembly and a wireless routing module; the collector assembly consists of a central processing unit, a weak magnetic collection module, an infrared collection module, an audio collection module, an electric field collection module and a humidity collection module; the sensor assembly consists of a weak magnetic sensor, an infrared temperature sensor and a humidity sensor. The method can greatly improve the accuracy of judging the leakage point of the heat supply pipeline, save a large amount of manpower and material resources and improve the efficiency of searching the leakage point.)

1. A heat supply pipeline leakage detector based on magnetic, thermal, acoustic, electric and wet non-excavation detection is characterized by comprising a bracket (1), a metal wheel (2), a sound pickup (3) and a data acquisition center; wherein the content of the first and second substances,

the support (1) is made of non-ferromagnetic and non-conductive materials, and the support (1) is formed by connecting a telescopic rod (15), a structural frame (16) and a thin bottom plate (17); the three metal wheels (2) are arranged on the structural frame (16), and the arrangement positions of the three metal wheels (2) are triangular; the pickup (3) is made of non-metal materials, and the pickup (3) is positioned above the metal wheel (2) and connected with the metal wheel (2); the data acquisition center is arranged on the thin bottom plate (17);

the data acquisition center consists of a battery power supply (4), an acquisition device assembly (5), a sensor assembly and a wireless routing module (6), wherein the acquisition device assembly (5), the sensor assembly and the wireless routing module (6) are all connected with the battery power supply (4); the collector assembly (5) consists of a central processing unit, and a weak magnetic collection module, an infrared collection module, an audio collection module, an electric field collection module and a humidity collection module which are connected with the central processing unit; the central processor is connected with the wireless routing module (6); the sensor component consists of a weak magnetic sensor (8), an infrared temperature sensor (9) and a humidity sensor (10); the audio frequency collection module with adapter (3) are connected, the electric field collection module with metal wheel (2) are connected, weak magnetism collection module with weak magnetism sensor (8) are connected, infrared collection module with infrared temperature sensor (9) are connected, humidity collection module with humidity transducer (10) are connected.

2. The heat supply pipeline leakage detector based on magnetic, thermal, acoustic, electric and wet non-excavation detection as claimed in claim 1, wherein a data acquisition shell (12) made of non-metal materials is arranged outside the battery power supply (4), the collector assembly (5) and the wireless routing module (6), a liquid crystal display (11) is arranged on the data acquisition shell (12), the liquid crystal display (11) is connected with a liquid crystal display module, and the liquid crystal display module is connected with the central processing unit.

3. The instrument for detecting leakage of heat supply pipeline based on magnetic, thermal, acoustic, electric and wet non-excavation detection as claimed in claim 2, wherein the data acquisition shell (12) is provided with a key (13), the key (13) is connected with a control trigger module, and the control trigger module is connected with the central processing unit.

4. The instrument for detecting leakage of heat supply pipeline based on magnetic, thermal, acoustic, electric and wet non-excavation detection as claimed in claim 1, wherein the power supply battery (4) is connected with a power supply transformation module; the central processing unit is connected with the external memory.

5. The instrument for detecting leakage of heat supply pipeline based on magnetic, thermal, acoustic, electric and wet non-excavation detection as claimed in claim 1, wherein the weak magnetic sensor (8) is a three-component weak magnetic sensor, and the weak magnetic acquisition module is connected with the three-component weak magnetic sensors.

6. The instrument for detecting leakage of heat supply pipeline based on magnetic, thermal, acoustic, electric and wet non-excavation detection as claimed in claim 1, wherein the infrared acquisition module is connected with three infrared temperature sensors (9).

7. The instrument for detecting leakage of heat supply pipeline based on magnetic, thermal, acoustic, electric and wet non-excavation detection as claimed in claim 1, wherein the humidity acquisition module is connected with two humidity sensors (10).

8. The instrument for detecting leakage of heat supply pipeline based on magnetic, thermal, acoustic, electric and wet non-excavation detection as claimed in claim 1, wherein the microphones (3) are piezoelectric ceramic microphones, and the number of the microphones is two.

9. The instrument for detecting leakage of heat supply pipeline based on magnetic, thermal, acoustic, electric and wet non-excavation detection according to claim 1, characterized in that the wireless routing module (6) is provided with an antenna (7).

10. The instrument for detecting the leakage of the heat supply pipeline based on the magnetic, thermal, acoustic, electric and wet non-excavation detection as claimed in claim 1, wherein the bracket (1) is made of carbon fiber, the telescopic rod (15) is connected with the handle (18), and the thin bottom plate (17) is provided with a hole for the probe of the infrared temperature sensor (9) to pass through.

Technical Field

The invention belongs to the technical field of pipeline detection, and particularly relates to a heat supply pipeline leakage detector based on magnetic, thermal, acoustic, electric and wet non-excavation detection.

Background

With the rapid and stable development of the economy of China and the rapid promotion of the urbanization of the villages, the popularization rate of the urban heating system is rapidly improved. The urban heat supply pipeline system inevitably faces various problems, because the heat distribution pipeline is often influenced by various factors such as traffic load and the like, the heat distribution pipeline is easy to crack and the like, and pipeline leakage accidents are caused frequently due to various reasons such as long-term overhaul of the pipeline, serious corrosion of the pipeline due to abrasion of the inner wall of the pipeline, long pipeline line and the like. But the underground laying is adopted, so that inconvenience is brought to daily thermal pipeline detection.

At present, the leakage detector or the pressure pipeline leakage tester which is mainly used for leakage detection of heating enterprises are better, and the principle of the leakage detector is that when water leaks from a certain position, pressure water is sprayed outwards from a crack of a pipeline, and jetting noise is caused by vibration generated by friction between the pressure water and the crack of the pipeline opening. It propagates laterally along the pipe and spreads out to the surface. The sensor of the detecting instrument is used for detecting above the pipeline pavement, so that the aim of finding a leakage point is fulfilled. However, the detection instrument only checks from one angle of sound, is difficult to make a quick and accurate judgment on leakage points of the trenchless heat supply pipeline, causes waste of manpower and material resources, wastes emergency repair time, and causes low efficiency of emergency repair work of heat supply pipeline leakage.

Disclosure of Invention

In order to solve the problem that time, manpower and material resources are wasted and the efficiency of heat supply pipeline leakage repair work is low due to the fact that a non-excavation heat supply pipeline leakage point is difficult to judge quickly and accurately due to the fact that the detection angle is single, the embodiment of the invention provides a heat supply pipeline leakage detector based on magnetic, thermal, acoustic, electric and wet non-excavation detection.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the invention provides a leakage detector for detecting a heat supply pipeline based on magnetism, heat, sound, electricity and wet non-excavation, wherein a bracket is made of non-ferromagnetic and non-conductive materials and is formed by connecting a telescopic rod, a structural frame and a thin bottom plate; the three metal wheels are arranged on the structure frame, and the arrangement positions of the three metal wheels are triangular; the sound pickup is made of non-metal materials, and is positioned above the metal wheel and connected with the metal wheel; the data acquisition center is arranged on the thin bottom plate;

the data acquisition center consists of a battery power supply, an acquisition device assembly, a sensor assembly and a wireless routing module, wherein the acquisition device assembly, the sensor assembly and the wireless routing module are all connected with the battery power supply; the collector assembly consists of a central processing unit, and a weak magnetic collection module, an infrared collection module, an audio collection module, an electric field collection module and a humidity collection module which are connected with the central processing unit; the central processing unit is connected with the wireless routing module; the sensor component consists of a weak magnetic sensor, an infrared temperature sensor and a humidity sensor; the audio frequency collection module with the adapter is connected, electric field collection module with the metal wheel is connected, weak magnetism collection module with weak magnetism sensor connects, infrared collection module with infrared temperature sensor connects, humidity collection module with humidity transducer connects.

Preferably, a data acquisition shell made of a non-metal material is arranged outside the battery power supply, the collector assembly and the wireless routing module, a liquid crystal display screen is arranged on the data acquisition shell and connected with a liquid crystal display module, and the liquid crystal display module is connected with the central processing unit.

Preferably, the data acquisition shell is provided with a key, the key is connected with the control trigger module, and the control trigger module is connected with the central processing unit.

Preferably, the power supply battery is connected with the power supply transformation module; the central processing unit is connected with the external memory.

Preferably, the weak magnetic sensor is a three-component weak magnetic sensor, and the weak magnetic acquisition module is connected with the three-component weak magnetic sensors.

Preferably, the infrared acquisition module is connected with three infrared temperature sensors.

Preferably, the humidity acquisition module is connected with two humidity sensors.

Preferably, the sound pickup is a piezoelectric ceramic sound pickup, and the number of the sound pickup is two.

Preferably, the wireless routing module is provided with an antenna.

Preferably, the support is made of carbon fiber, the telescopic rod is connected with the handle, and the thin bottom plate is provided with a hole through which the infrared temperature sensor probe penetrates.

The invention has the following beneficial effects:

according to the heat supply pipeline leakage detector based on magnetic, thermal, acoustic, electric and wet non-excavation detection, the support is made of non-ferromagnetic and non-conductive materials, so that the influence of ferromagnetic substances on weak magnetic detection data and the influence on ground electric field data acquisition can be reduced; the thin bottom plate has a protection effect on the sensor and is prevented from being scratched by a sharp object protruding from the ground, but the infrared temperature sensor does not need to be shielded during detection, so that the thin bottom plate is provided with a hole which is matched with a probe of the infrared temperature sensor to penetrate through. The arrangement positions of the three metal wheels are triangular, three points form a plane, the three wheels form a plane, the fact that the measuring direction of each sensor probe is perpendicular to the ground can be guaranteed, if the three metal wheels form a line for measuring, axial deflection can occur along with human thrust, and data are inaccurate; the three metal wheels are three ground electrodes and are responsible for collecting plane potential differences among the three electrodes, the electric field characteristics of the leakage points of the ground buried pipeline in the detection range can be drawn through the collected potential differences, and the defects of the anti-corrosion heat-insulation layer of the buried heat supply pipeline or the accurate positions of the leakage points can be known through the analysis of the ground electric field. The metal wheel 2 is directly connected with the non-metal pickup, the pickup can continuously collect the ground audio in the detection range through the metal wheel, the pipeline leakage can generate obvious sound waves on the frequency of 300 plus 800Hz and radiate to the ground by taking the leakage point as the center, the suspected position of the leakage point can be more accurately collected through the two groups of ground pickups through collecting the sound waves on the specific frequency of 300 plus 800Hz, and the pickup made of the non-metal material can reduce the influence of ferromagnetic substances on weak magnetic detection data and the influence on ground electric field data collection. The direct-buried pipeline weak magnetic data collected by the weak magnetic sensor can be used for continuously collecting and inverting numerical values such as pipeline wall thickness and the like, so that the residual quantity of the pipeline metal at the weakest part of the pipeline in a detection range is obtained, and a standard data basis is provided for checking and judging leakage points. The infrared temperature sensor continuously collects ground temperature data above the pipeline, and then identifies a temperature field formed by the leakage point on the ground, so as to provide data basis for research and judgment of the leakage point. Adopt humidity transducer, the ground humidity that directly can make directly over the leak point to a certain extent of underground buried pipeline's leakage increases, can provide the data basis for studying and judging of leak point through the humidity data directly over using humidity transducer continuous collection pipeline route.

The weak magnetic acquisition module, the infrared acquisition module, the audio acquisition module, the electric field acquisition module and the humidity acquisition module transmit acquired detection data to the central processing unit, and the central processing unit wirelessly transmits the comprehensive data to an external computer through the wireless routing module 6, so that a worker can comprehensively analyze and judge the whole data.

The embodiment comprehensively applies wall thickness detection of the directly-buried pipeline weak magnetic pipeline, ground infrared temperature detection of the directly-buried pipeline, specific audio detection and identification of pipeline leakage, detection and identification of a ground electric field of a load current leakage point in the pipeline, detection of humidity above a directly-buried pipeline route, and comprehensive study, judgment and positioning of five kinds of trenchless detection data of the heat supply pipeline leakage point. The embodiment has a simple and ingenious structure, comprehensively judges the leakage point of the heat supply pipeline from five aspects of magnetism, heat, sound, electricity and humidity, greatly improves the accuracy of judging the leakage point of the heat supply pipeline, can quickly and accurately find the leakage point of the heat supply pipeline, and saves a large amount of manpower and material resources; the invention can be applied to urban direct-buried heat supply pipelines, is convenient for pushing detection on level ground such as highways, footpaths, green belts and the like, and can greatly improve the working efficiency of heat supply pipeline leakage rush repair.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a heat supply pipeline leakage detector based on magnetic, thermal, acoustic, electrical and wet non-excavation detection in an embodiment of the invention;

FIG. 2 is a schematic structural diagram of a data collection center according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of data acquisition according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the embodiment of the present invention except for a data acquisition center.

Description of reference numerals:

1. a support; 2. a metal wheel; 3. a sound pickup; 4. a battery power source; 5. a collector assembly; 6. a wireless routing module; 7. an antenna; 8. a weak magnetic sensor; 9. an infrared temperature sensor; 10. a humidity sensor; 11. a liquid crystal display screen; 12. a number collection housing; 13. pressing a key; 14. a sensor housing; 15. a telescopic rod; 16. a structural frame; 17. a thin base plate; 18. a handle.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The embodiment provides a heat supply pipeline leakage detector based on magnetic, thermal, acoustic, electric and wet non-excavation detection, as shown in fig. 1 to 4, comprising a bracket 1, a metal wheel 2, a sound pickup 3 and a data acquisition center; the support 1 is made of a non-ferromagnetic and non-conductive material, and the support 1 is formed by connecting a telescopic rod 15, a structural frame 16 and a thin bottom plate 17; the three metal wheels 2 are arranged on the structural frame 16, and the arrangement positions of the three metal wheels 2 are triangular; the pickup 3 is made of non-metal materials, and the pickup 3 is positioned above the metal wheel 2 and connected with the metal wheel 2; the data acquisition center is mounted on the thin base plate 17. The data acquisition center consists of a battery power supply 4, an acquisition device assembly 5, a sensor assembly and a wireless routing module 6, wherein the acquisition device assembly 5, the sensor assembly and the wireless routing module 6 are all connected with the battery power supply 4; the collector assembly 5 consists of a central processing unit, and a weak magnetic collection module, an infrared collection module, an audio collection module, an electric field collection module and a humidity collection module which are connected with the central processing unit; the central processor is connected with the wireless routing module 6; the sensor component consists of a weak magnetic sensor 8, an infrared temperature sensor 9 and a humidity sensor 10; the audio frequency collection module with adapter 3 is connected, electric field collection module with metal wheel 2 is connected, weak magnetism collection module with weak magnetism sensor 8 is connected, infrared collection module with infrared temperature sensor 9 is connected, humidity collection module with humidity transducer 10 is connected.

Battery power 4, collector subassembly 5, wireless routing module 6 are equipped with non-metallic's data acquisition shell 12 outward, be equipped with liquid crystal display 11 on the data acquisition shell 12, liquid crystal display 11 is connected with liquid crystal display module, liquid crystal display module with central processing unit connects. The data acquisition shell 12 is provided with a key 13, the key 13 is connected with a control trigger module, and the control trigger module is connected with the central processing unit. The sensor assembly and the pickup 3 are provided with a non-metal protective shell 14 except for the side facing the ground. The power supply battery 4 is connected with the power supply transformation module; the central processing unit is connected with the external memory. The weak magnetic sensor 8 is a three-component weak magnetic sensor, and the weak magnetic acquisition module is connected with the three-component weak magnetic sensors. The infrared acquisition module is connected with three infrared temperature sensors 9. The humidity acquisition module is connected with two humidity sensors 10. Pickup 3 is piezoceramics pickup, and quantity is two piezoceramics pickup is respectively with two parallels metal wheel 2 is connected. The wireless routing module 6 is provided with an antenna 7. The support 1 is made of non-ferromagnetic and non-conductive carbon fiber materials, the telescopic rod 15 is connected with the handle 18, and the thin bottom plate 17 is provided with a hole which is matched with the probe of the infrared temperature sensor 9 to penetrate through.

The support 1 is made of non-ferromagnetic and non-conductive materials, so that the influence of ferromagnetic substances on weak magnetic detection data and the influence on ground electric field data acquisition can be reduced; the thin bottom plate 17 protects the sensor and prevents the sensor from being scratched by a sharp object protruding from the ground, but the infrared temperature sensor 9 is not covered during detection, so that the thin bottom plate 17 is provided with a hole which is matched with the infrared temperature sensor 9 to penetrate through. The arrangement positions of the three metal wheels 2 are triangular, three points form a plane, the three wheels form a plane, the fact that the measuring direction of each sensor probe is perpendicular to the ground can be guaranteed, if the three wheels form a line for measuring, axial deflection can occur along with human thrust, and data are inaccurate; the three metal wheels 2 are three ground electrodes and are responsible for collecting plane potential differences among the three electrodes, the electric field characteristics of the leakage points of the ground buried pipeline in the detection range can be drawn through the collected potential differences, and the defects of the anti-corrosion heat-insulation layer of the buried heat supply pipeline or the accurate positions of the leakage points can be known through the analysis of the ground electric field. The metal wheel 2 is directly connected with the non-metal pickup 3, the pickup 3 can continuously collect the ground audio frequency in the detection range through the metal wheel, the pipeline leakage can generate obvious sound waves on the frequency of 300 plus 800Hz and radiate to the ground by taking a leakage point as a center, the suspected position of the leakage point can be more accurately collected through the two groups of ground pickups 3 through collecting the sound waves on the specific frequency of 300 plus 800Hz, and the pickup 3 made of the non-metal material can reduce the influence of ferromagnetic substances on weak magnetic detection data and the influence on ground electric field data collection. The weak magnetic data of the direct-buried pipeline, which can be collected by the weak magnetic sensor 8, can be used for continuously collecting and inverting numerical values such as the wall thickness of the pipeline, so that the residual quantity of the metal of the pipeline at the weakest part of the pipeline in a detection range can be obtained, and a standard data basis is provided for the investigation and judgment of leakage points. The infrared temperature sensor 9 continuously collects ground temperature data above the pipeline, and then identifies a temperature field formed by the leakage point on the ground, so as to provide data basis for research and judgment of the leakage point. By adopting the humidity sensor 10, the ground humidity right above the leakage point can be increased to a certain extent due to the leakage of the underground direct-buried pipeline, and the humidity data right above the pipeline route can be continuously acquired by using the humidity sensor 10 to provide data basis for the study and judgment of the leakage point.

The weak magnetic acquisition module, the infrared acquisition module, the audio acquisition module, the electric field acquisition module and the humidity acquisition module transmit acquired detection data to the central processing unit, and the central processing unit wirelessly transmits the comprehensive data to an external computer through the wireless routing module 6, so that a worker can comprehensively analyze and judge the whole data.

According to the technical scheme, the heat supply pipeline leakage detector based on magnetic, thermal, acoustic, electric and wet non-excavation detection is provided, wall thickness detection of a direct-buried pipeline weak magnetic pipeline, ground infrared temperature detection of the direct-buried pipeline, specific audio detection and identification of pipeline leakage, detection and identification of a ground electric field of a load current leakage point in a pipeline and detection of humidity above a direct-buried pipeline are comprehensively applied, and five types of non-excavation detection data of the heat supply pipeline leakage point are comprehensively researched and positioned. The embodiment has a simple and ingenious structure, comprehensively judges the leakage point of the heat supply pipeline from five aspects of magnetism, heat, sound, electricity and humidity, greatly improves the accuracy of judging the leakage point of the heat supply pipeline, can quickly and accurately find the leakage point of the heat supply pipeline, and saves a large amount of manpower and material resources; the invention can be applied to urban direct-buried heat supply pipelines, is convenient for pushing detection on level ground such as highways, footpaths, green belts and the like, and can greatly improve the working efficiency of heat supply pipeline leakage rush repair.

The embodiments of the present invention have been described in detail through the embodiments, but the description is only exemplary of the embodiments of the present invention and should not be construed as limiting the scope of the embodiments of the present invention. The scope of protection of the embodiments of the invention is defined by the claims. In the present invention, the technical solutions described in the embodiments of the present invention or those skilled in the art, based on the teachings of the embodiments of the present invention, design similar technical solutions to achieve the above technical effects within the spirit and the protection scope of the embodiments of the present invention, or equivalent changes and modifications made to the application scope, etc., should still fall within the protection scope covered by the patent of the embodiments of the present invention.