CN111351527A - Intelligent cable explosion-proof box with pressure and gas monitoring function, system and application method thereof - Google Patents

Abstract

The invention discloses a smart cable explosion-proof box with pressure and gas monitoring functions, a system and an application method thereof. The smart cable explosion-proof box of the present invention comprises an explosion-proof box body, and the explosion-proof box body is provided with a pressure sensor and a gas detection sensor assembly , Monitoring information sending module and battery, the output ends of the pressure sensor and gas detection sensing component are respectively connected with the monitoring information sending module, and the battery is respectively connected with the pressure sensor, the gas detection sensing component, and the power supply end of the monitoring information sending module. The sensing component has at least one gas detection function among hydrogen chloride, benzene and acetaldehyde. The intelligent cable explosion-proof box and system of the present invention can realize the monitoring of the pressure and gas generated at the position of the intermediate joint of the cable, so that the hidden trouble of the fault can be dealt with in time before the fire occurs, which not only protects the safety of the intermediate joint, but also avoids the occurrence of fire. occurred, greatly improving the operation and maintenance level of power cables.

Description

Intelligent cable explosion-proof box, system and application with pressure and gas monitoring method

technical field

The invention relates to a cable connection detection technology of power transmission technology, in particular to an intelligent cable explosion-proof box with pressure and gas monitoring functions, a system and an application method thereof.

Background technique

The development of urbanization makes the use of power cables more and more, and the cable accident rate also increases. Operational experience shows that most of the high-voltage cable accidents occur at the intermediate joints of the cables. Due to the quality and installation process and other reasons, once the intermediate joint of the cable explodes, it will often cause an electrical fire, destroy the surrounding adjacent cables, and cause irreparable losses to the entire power system. At present, after the common explosion-proof box is installed at the intermediate joint of the cable, it has a certain protective effect on the cable joint. This protective effect is mainly reflected in the prevention of the spread of the intermediate joint after an explosion accident has occurred. However, how to realize the explosion monitoring and prevention of the cable explosion-proof box is still a technical problem that needs to be solved urgently.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention: in view of the above problems of the prior art, a smart cable explosion-proof box with pressure and gas monitoring functions, a system and an application method thereof are provided. The smart cable explosion-proof box and system of the present invention can The pressure and gas generated at the position of the intermediate joint are monitored, so that the hidden troubles can be dealt with in time before the fire occurs, which not only protects the safety of the intermediate joint, but also avoids the occurrence of fire, and greatly improves the operation and maintenance level of the power cable.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is:

A smart cable explosion-proof box with pressure and gas monitoring functions, comprising an explosion-proof box body, wherein a pressure sensor, a gas detection sensing component, a monitoring information sending module and a battery are arranged in the explosion-proof box body, the pressure sensor, gas detection The output ends of the sensing components are respectively connected with the monitoring information sending module, and the battery is respectively connected with the pressure sensor, the gas detection sensing component, and the power supply end of the monitoring information sending module, and the gas detection sensing components are provided with hydrogen chloride, benzene, ethyl acetate, etc. At least one gas detection function among the three aldehydes.

Optionally, the explosion-proof box body is a sleeve structure with a middle part protruding laterally so that an installation cavity is formed inside, and the pressure sensor, the gas detection sensor assembly, the monitoring information sending module and the battery are installed in the installation cavity.

Optionally, the outer wall of the laterally protruding part of the middle of the explosion-proof box body is provided with an energy release hole.

Optionally, the explosion-proof box body is made of FRP.

In addition, the present invention also provides a smart cable explosion-proof system with pressure and gas monitoring functions, including a communication relay device and the aforementioned smart cable explosion-proof box with pressure and gas monitoring functions, the monitoring information of the smart cable explosion-proof box is sent. The module is connected to the network through a communication relay device.

Optionally, the communication relay device includes a LoRaWAN communication relay module and a battery module that are connected to each other.

Optionally, an application method of the aforementioned smart cable explosion-proof box with pressure and gas monitoring functions, the implementation step includes: the monitoring information sending module periodically collects pressure data detected by a pressure sensor and gas data detected by a gas detection sensing component. , if the gas data or pressure data exceeds the preset threshold, send the gas data and pressure data to the specified management and control background.

Optionally, after sending the gas data and pressure data to the designated management and control background, the step further includes: the management and control background generates alarm information and pushes it to the terminal equipment of the station operation and maintenance personnel to remind, inquire, or solve hidden troubles.

Optionally, the gas detection sensing component is a sensor with three gas detection functions of hydrogen chloride, benzene and acetaldehyde, and the alarm information generated by the management and control background also includes the state of the cable intermediate joint detected according to the gas data and the pressure data. , the gas data includes three kinds of gas content data of hydrogen chloride, benzene and acetaldehyde, and the step of detecting the state of the cable intermediate joint according to the pressure data and the pressure data includes: the pressure, the hydrogen chloride content, the benzene content, and the acetaldehyde content using The pre-trained machine learning classification model obtains the state of the cable intermediate joint corresponding to the input data, and the machine learning classification model is pre-trained to include four input data of pressure, hydrogen chloride content, benzene content, and acetaldehyde content and their corresponding cable intermediate joints Mapping relationships between states.

Compared with the prior art, the smart cable explosion-proof box with pressure and gas monitoring functions of the present invention has the following advantages: the smart cable explosion-proof box of the present invention includes an explosion-proof box body, and the explosion-proof box body is provided with a pressure sensor and a gas detection sensor. component, monitoring information sending module and battery. The output ends of the pressure sensor and gas detection sensing component are respectively connected with the monitoring information sending module, and the battery is respectively connected with the power supply end of the pressure sensor, gas detection sensing component and monitoring information sending module. The detection and sensing component has at least one gas detection function among hydrogen chloride, benzene and acetaldehyde, so it can monitor the pressure and gas generated by the position of the intermediate joint of the cable, so as to deal with the hidden trouble in time before the fire occurs. It not only protects the safety of the intermediate joint, but also avoids the occurrence of fire, which greatly improves the operation and maintenance level of the power cable.

Description of drawings

FIG. 1 is a schematic structural diagram of a smart cable explosion-proof box according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a communication line of a smart cable explosion-proof box according to an embodiment of the present invention.

Legend description: 1. Explosion-proof box body; 10. Installation cavity; 11. Energy drain hole; 2. Pressure sensor; 3. Gas detection sensor assembly; 4. Monitoring information sending module; 5. Battery.

Detailed ways

As shown in FIG. 1, the smart cable explosion-proof box with pressure and gas monitoring functions in this embodiment includes an explosion-proof box body 1, and the explosion-proof box body 1 is provided with a pressure sensor 2, a gas detection sensor assembly 3, a monitoring information sending module 4 and The battery 5, the output ends of the pressure sensor 2 and the gas detection and sensing component 3 are respectively connected with the monitoring information sending module 4, and the battery 5 is respectively connected with the power end of the pressure sensor 2, the gas detection sensing component 3 and the monitoring information sending module 4, The gas detection sensor assembly 3 has a gas detection function of at least one of hydrogen chloride, benzene, and acetaldehyde (three independent sensors or some or all of the integrated sensors can be used as required).

In order to facilitate timely handling of hidden troubles, in this embodiment, the explosion-proof box body 1 is made of glass fiber reinforced plastic, which is a material with high melting point and high strength, with good explosion-proof effect and convenient and quick on-site processing.

As shown in FIG. 1 , in this embodiment, the explosion-proof box body 1 is a sleeve structure, and the middle part protrudes laterally so that an installation cavity 10 is formed inside. The pressure sensor 2 , the gas detection sensor assembly 3 , the monitoring information sending module 4 and the battery 5 are installed in the installation cavity 10 .

As shown in FIG. 1 , in this embodiment, the outer wall of the laterally protruding part of the middle part of the explosion-proof box body 1 is provided with an energy release hole 11 .

In this embodiment, the diameter of the pressure sensor 2 does not exceed 1cm, the measurement range is within 0.1Mpa~60Mpa, and the accuracy is greater than or equal to 0.1%FS. The small volume of the pressure sensor can be conveniently placed inside the explosion-proof box body 1 , and the high precision and large measurement range can meet the pressure measurement requirements of the explosion-proof box body 1 . In addition, the monitoring information sending module 4 sets a threshold for the pressure sensor 2, and the monitoring information sending module 4 sends monitoring data if and only when the abnormal data exceeds the threshold.

In this embodiment, the diameter of the gas detection sensor assembly 3 does not exceed 1 cm, the measurement range is within 0.01% to 10%, and the accuracy is greater than or equal to 0.1%. The small volume of the gas sensor can be conveniently placed inside the explosion-proof box body 1 , and the high precision and large measurement range can meet the pressure measurement requirements of the explosion-proof box body 1 . And, in the monitoring information sending module 4, a threshold is set for the gas detection sensing component 3, and the monitoring information sending module 4 sends monitoring data if and only when the abnormal data exceeds the threshold.

In this embodiment, the monitoring information sending module 4 is composed of a single-chip microcomputer and a communication module, which has the advantage of low power consumption.

In this embodiment, the battery 5 is powered by the AA battery with a larger capacity, which can ensure that the sensor and the communication relay can be replaced with different batteries for a long time.

As shown in Figures 1 and 2, this embodiment also provides an intelligent cable explosion-proof system with pressure and gas monitoring functions, including a communication relay device (shown in b in Figure 1) and the aforementioned pressure and gas monitoring functions. The intelligent cable explosion-proof box, the monitoring information sending module 4 of the intelligent cable explosion-proof box is connected to the network through the communication relay device. The communication relay is installed in the cable tunnel/cable trench (shown in a in Figure 1). The intelligent cable explosion-proof system with pressure and gas monitoring functions of this embodiment can effectively improve the communication capability of the intelligent cable explosion-proof box by adding a communication relay device, and is especially suitable for monitoring cable intermediate joints in cable tunnels/cable trenches in a closed environment.

In this embodiment, the communication relay device includes a LoRaWAN communication relay module and a battery module that are connected to each other. The LoRaWAN communication relay module adopts LoRaWAN™ wireless communication technology. Its communication distance and receiving sensitivity far exceed the current FSK and GFSK modulation, and multiple transmitted signals occupy the same channel without being affected. The communication relay receives from the sensor. The detected super-threshold pressure and gas concentration data, and the signal is sent to the control platform; the communication relay device adopts AA battery, which lasts for a long time.

As shown in FIG. 1 and FIG. 2 , this embodiment also provides an application method of the aforementioned smart cable explosion-proof box with pressure and gas monitoring functions. The implementation steps include: the monitoring information sending module 4 regularly collects pressure data detected by the pressure sensor 2 . The gas data detected by the gas detection sensor component 3, if the gas data or pressure data exceeds the preset threshold, the gas data and pressure data are sent to the designated management and control background (shown in c in Figure 1). The method of this embodiment sends data only when the gas data or the pressure data exceeds the preset threshold, which avoids the consumption of battery power by transmitting normal data and prolongs the battery life.

In this embodiment, after the gas data and pressure data are sent to the designated management and control background, the step further includes: the management and control background generates alarm information and pushes it to the terminal equipment of the operation and maintenance personnel in the station to remind, inquire, or solve hidden troubles. The management and control platform is set up in the operation and maintenance duty room, and the communication relay device can use wireless communication or optical fiber communication according to the needs. The management and control background sends the alarm information to the information terminal equipment (mobile phone APP) of the operation and maintenance personnel in the station to remind inquiries and solve hidden troubles. Forming a complete closed loop can effectively improve the operation and maintenance level of power cables.

In order to further improve the processing efficiency of the operation and maintenance personnel in the station, in this embodiment, the step of diagnosing the state of the cable intermediate joint is further performed through the management and control background. In this embodiment, the gas detection sensor component 3 is a sensor with three gas detection functions of hydrogen chloride, benzene, and acetaldehyde, and the gas data includes three gas content data of hydrogen chloride, benzene, and acetaldehyde. Gas detection is used to improve the diagnostic accuracy. The alarm information generated in the management and control background also includes the status of the cable intermediate joint detected according to the gas data and pressure data. The steps of detecting the status of the cable intermediate joint according to the pressure data and pressure data include: , hydrogen chloride content, benzene content, and acetaldehyde content. The pre-trained machine learning classification model is used to obtain the state of the cable intermediate joint corresponding to the input data. The machine learning classification model is pre-trained to include four types of pressure, hydrogen chloride content, benzene content, and acetaldehyde content. The mapping between the input data and its corresponding cable intermediate connector state.

In this embodiment, the state of the intermediate joint of the cable includes two states: normal state and abnormal state. The abnormal state can be classified according to needs, such as requiring regular maintenance, urgent treatment, etc. Regular maintenance can also be subdivided into according to needs. Different maintenance cycles are used for regular maintenance.

As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein. The present application refers to flowcharts of methods, apparatus (systems), and computer program products according to embodiments of the present application and/or processor-executed instructions generated for implementing a process or processes and/or block diagrams in a flowchart. A means for the function specified in a block or blocks. These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions An apparatus implements the functions specified in a flow or flows of the flowcharts and/or a block or blocks of the block diagrams. These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in one or more of the flowcharts and/or one or more blocks of the block diagrams.

The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (9)

1. The utility model provides an explosion-proof box of intelligent cable with pressure and gas monitoring function, its characterized in that, includes explosion-proof box body (1), be equipped with pressure sensor (2), gaseous sensing subassembly (3), monitoring information sending module (4) and battery (5) that detect in explosion-proof box body (1), pressure sensor (2), the output of gaseous sensing subassembly (3) that detects link to each other with monitoring information sending module (4) respectively, battery (5) link to each other with pressure sensor (2), gaseous sensing subassembly (3), the power end of monitoring information sending module (4) respectively, gaseous sensing subassembly (3) that detect possesses at least one kind of gaseous detection function in hydrogen chloride, benzene, the acetaldehyde three.

2. The intelligent cable explosion-proof box with the pressure and gas monitoring function according to claim 1, wherein the explosion-proof box body (1) is of a sleeve structure, the middle part of the explosion-proof box body protrudes transversely to form a mounting cavity (10) inside the explosion-proof box body, and the pressure sensor (2), the gas detection sensing assembly (3), the monitoring information sending module (4) and the battery (5) are mounted in the mounting cavity (10).

3. An intelligent cable explosion-proof box with pressure and gas monitoring function according to claim 2, wherein the outer wall of the part of the explosion-proof box body (1) which protrudes transversely is provided with an energy leakage hole (11).

4. A smart cable flameproof box with pressure and gas monitoring capabilities according to claim 2, characterized in that the flameproof box body (1) is made of glass fiber reinforced plastic.

5. An intelligent cable explosion-proof system with pressure and gas monitoring function, which is characterized by comprising a communication relay device and the intelligent cable explosion-proof box with pressure and gas monitoring function of any one of claims 1 to 4, wherein a monitoring information sending module (4) of the intelligent cable explosion-proof box is connected with a network through the communication relay device.

6. A smart cable explosion-proof system with pressure and gas monitoring capabilities as recited in claim 5, wherein said communication relay device comprises a LoRaWAN communication relay module and a battery module connected to each other.

7. A method for applying the intelligent cable explosion-proof box with the pressure and gas monitoring function as claimed in any one of claims 1 to 4, is characterized by comprising the following implementation steps: the monitoring information sending module (4) collects pressure data detected by the pressure sensor (2) and gas data detected by the gas detection sensing assembly (3) at regular time, and sends the gas data and the pressure data to a designated management and control background if the gas data or the pressure data exceed a preset threshold.

8. The method for applying a smart cable flameproof box with pressure and gas monitoring function according to claim 7, characterized in that the sending of gas data and pressure data to the designated management background further comprises: and the management and control background generates alarm information and pushes the alarm information to terminal equipment of operation and maintenance personnel in the station so as to remind the user of inquiring or solving the hidden trouble.

9. The application method of the intelligent cable explosion-proof box with the pressure and gas monitoring function according to claim 8, wherein the gas detection sensing assembly (3) is a sensor with three gas detection functions of hydrogen chloride, benzene and acetaldehyde, the alarm information generated by the control background further includes a cable intermediate joint state detected according to gas data and pressure data, the gas data includes three gas content data of hydrogen chloride, benzene and acetaldehyde, and the step of detecting the cable intermediate joint state according to the pressure data and the pressure data includes: and adopting a pre-trained machine learning classification model to obtain the states of the cable intermediate joints corresponding to the input data of the pressure, the hydrogen chloride content, the benzene content and the acetaldehyde content, wherein the machine learning classification model is pre-trained to contain the mapping relation among the four input data of the pressure, the hydrogen chloride content, the benzene content and the acetaldehyde content and the states of the corresponding cable intermediate joints.

Images