GIS expansion joint intelligent detection alarm device

Abstract

The invention, which relates to the technical field of expansion joint detection, discloses a GIS expansion joint intelligent detection alarm device comprising a sensor component, a repeater and a monitoring terminal. The sensor part is responsible for collecting displacement data of the expansion joint in real time, the repeater is responsible for receiving the displacement data of the sensor part and forwarding the displacement data to the monitoring terminal, and the monitoring terminal is responsible for receiving and processing the displacement data. The expansion joint displacement detection device is stable in structure, once the expansion joint displaces, the angle, the distance and the like can be changed, detection data can also be changed, in the detection process, operation and maintenance workers do not need to manually detect the data in real time, collect the displacement data of the expansion joint through a sensor component and transmit the displacement data to a monitoring terminal, the inspection work of the workers is reduced, and the detection efficiency is improved. The labor cost is saved, and real-time monitoring is realized.

Description

Technical Field

[0001] The invention relates to the technical field of expansion joint detection, and in particular to an intelligent detection alarm device for GIS expansion joints. Background Art

[0002] Bellows expansion joints are often installed at the joints of each segment of GIS combined equipment to compensate for GIS thermal expansion and contraction, foundation expansion and contraction, and other displacements. On the one hand, due to installation errors or harsh environmental conditions, the deformation and stress of the GIS cylinder exceed the design allowance, which will cause the cylinder to crack. On the other hand, the bellows expansion joint is frequently subjected to tension and compression, which can easily cause fatigue damage to the bellows material, leading to cracks in the bellows expansion joint, SF gas leakage, ground discharge, and other faults.

[0003] GIS equipment cylinder cracking, bellows material fatigue damage, bellows expansion joint cracking and other hazards. Due to the large system, complex structure, and many structural state parameters involved, many state parameters are interrelated and cannot be detected offline. In addition, the damage and failure mechanism of metal parts such as aluminum alloy cylinders and bellows expansion joints is complex and involves multiple disciplines.

[0004] At present, there is a lack of effective supervision on the overall structure of GIS equipment. In recent years, there have been frequent failure accidents such as cylinder cracking, air leakage, bracket deformation, and expansion joint instability in UHV GIS equipment. Once an accident occurs, it will not only bring huge economic losses to the enterprise, but also pose a safety threat to personnel and the environment, and also cause adverse social impacts.

[0005] The existing technical research and development of GIS equipment is mainly focused on the components related to the settlement of substation GIS equipment, specifically the foundation or the equipment itself.

[0006] For example, set up settlement observation points at the equipment foundation, select benchmark points in stable areas far away from the monitored objects, use high-precision electronic water level gauges with special rulers to manually measure the settlement of buildings and equipment foundations within a certain period of time, and calculate and analyze the current settlement rate and whether there is uneven settlement.

[0007] Or use the indirect measurement method to measure the local parameters of the bellows expansion joint, use the local parameters to draw geometric figures, and calculate the geometric figures to obtain the displacement measurement of the bellows expansion joint; this method saves manpower and has wide applicability. However, the starting point of the calculation of this method is mainly the manual measurement basic data, and the final calculation result is only a technical judgment of the horizontal displacement of the expansion joint.

[0008] Considering the low intelligence and low efficiency of current settlement monitoring technology, the latest GIS equipment settlement monitoring has adopted the latest technology in the field of foundation settlement monitoring, which uses monitoring technology based on Beidou and other satellite positioning systems. It is mainly composed of a data collector, a signal controller for output alarms, a display and a power supply. However, this technology is completely different from the current communication management mode of substations, and there are difficulties in the system matching process. Therefore, although this method can improve monitoring accuracy and realize unattended monitoring, its high cost and difficult system compatibility have led to great obstacles to its promotion.

[0009] Therefore, operators hope to design a GIS expansion joint intelligent detection and alarm device that can autonomously measure the displacement of the expansion joint. Summary of the invention

[0010] The technical problem to be solved by the present invention is to solve the deficiencies in the prior art and to design a new GIS expansion joint intelligent detection and alarm device. The structure of this GIS expansion joint intelligent detection and alarm device is perfect, which solves the problem that the existing expansion joint displacement measurement method is incomplete.

[0011] The solution adopted by the present invention to solve the technical problem is:

[0012] GIS expansion joint intelligent detection and alarm device, including sensor components, repeaters and monitoring terminals;

[0013] The sensor component is responsible for collecting the displacement data of the expansion joint in real time, the repeater is responsible for receiving the displacement data of the sensor component and forwarding the displacement data to the monitoring terminal, and the monitoring terminal is responsible for receiving and processing the displacement data;

[0014] The sensor component includes a displacement sensor and a measured plate. The displacement sensor is used to send a signal, and the measured plate is used to rebound the signal sent by the displacement sensor.

[0015] As a preferred embodiment of the present invention, the monitoring terminal is provided with a data receiving module, a data analysis and processing module, a communication module, an alarm module and a storage module; the data receiving module is used to receive the displacement data sent by the repeater, the analysis and processing module is used to analyze and process the displacement data, the monitoring terminal sets the displacement threshold of the expansion joint, the alarm module is activated when the data received by the monitoring terminal exceeds the threshold, and the storage module stores the data received by the monitoring terminal.

[0016] As a preferred embodiment of the present invention, the displacement sensor comprises a first displacement sensor, a second displacement sensor and a third displacement sensor, the first displacement sensor, the second displacement sensor and the third displacement sensor have the same structure, and the first displacement sensor, the second displacement sensor and the third displacement sensor are fixed on the housing of the expansion joint in the form of an equilateral triangle;

[0017] The tested plates include a first tested plate, a second tested plate and a third tested plate, and the positions of the tested plates correspond to the positions of the displacement sensors.

[0018] As a preferred embodiment of the present invention, the first displacement sensor includes a base, a circuit board, a limiting ring, a power supply module and a shell. The circuit board and the limiting ring are both arranged inside the base. The wires of the circuit board pass through the limiting ring to connect to the power supply module. The shell and the base are threadedly connected, and the power supply module is arranged inside the shell.

[0019] As a preferred embodiment of the present invention, the displacement sensor and the plate to be measured are both fixed to the expansion joint via a support seat, and the displacement sensor is fixed to the support seat via a support plate.

[0020] As a preferred implementation of the present invention, LORA-based wireless transmission technology is used between the sensor and the repeater.

[0021] As a preferred implementation of the present invention, the displacement sensor specifically adopts a millimeter wave displacement sensor.

[0022] As a preferred embodiment of the present invention, the displacement sensor and the repeater both adopt a dual-mode power supply method combining solar power supply and battery power supply.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The GIS expansion joint intelligent detection alarm device of the present invention is composed of three groups of sensor components, a monitoring terminal and a LoRa communication repeater evenly installed on the GIS busbar expansion joint. The sensor output signal is an absolute displacement value. Even if the power is interrupted and reconnected, the data will not be lost, and there is no need to reset to zero. The sensitive element is non-contact, and even if the detection is repeated continuously, it will not cause any wear to the sensor, which can greatly improve the reliability and service life of the detection.

[0025] The high-precision displacement sensor used in the detection device uses millimeter-wave radar to test the displacement. Millimeter waves have high resolution, good directivity, strong anti-interference ability and good detection performance, and have low atmospheric attenuation, better penetration of smoke and dust, and are less affected by weather. These characteristics determine that millimeter-wave radar has the ability to work all day and all weather, is small in size, light in weight, and durable, and can meet the protection level (IP) 69K standard. After the millimeter wave is emitted, by accurately measuring the time it takes for the millimeter wave to go back and forth, according to D=(C*T) / 2, the value of the distance D to the target obstacle can be obtained.

[0026] The displacement sensor and repeater are powered by both solar panels and batteries. At the same time, the displacement sensor and repeater work in a non-contact manner. Even if the detection is repeated continuously, it will not cause any wear to the displacement sensor, which can greatly improve the reliability and service life of the detection. Therefore, the displacement sensor can detect the status of the expansion joint in the pipeline system in real time, and send the detected data to the repeater, which will be sent to the monitoring terminal by the repeater. The monitoring terminal analyzes and processes the data to detect abnormal situations in time and avoid accidents.

[0027] The device can process the displacement data of the expansion joint through the monitoring terminal, analyze the working condition of the expansion joint in the pipeline system, identify abnormal conditions, and perform alarm processing through the alarm module. It does not require operation and maintenance staff to manually detect data in real time, reduces the inspection work of staff, saves labor costs, and realizes rapid detection, thereby improving the safety of busbar operation.

[0028] The LORA-based wireless transmission technology is used between the sensor and the repeater, which has outstanding advantages, such as long distance, low complexity and low power consumption. It can also save tedious wiring work and improve the coverage of the repeater. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural schematic diagram of the GIS expansion joint intelligent detection and alarm device proposed by the present invention;

[0030] Figure 2 This is a schematic diagram of the installation of the GIS expansion joint intelligent detection and alarm device proposed by the present invention;

[0031] Figure 3 This is a schematic diagram of the installation of the GIS expansion joint intelligent detection and alarm device proposed by the present invention;

[0032] Figure 4 This is a structural schematic diagram of the displacement sensor of the GIS expansion joint intelligent detection alarm device proposed by the present invention;

[0033] Figure 5 A physical picture of the GIS expansion joint intelligent detection and alarm device proposed by the present invention;

[0034] Figure 6 A physical picture of the GIS expansion joint intelligent detection and alarm device proposed by the present invention;

[0035] Figure 7 This is a physical picture of the GIS expansion joint intelligent detection and alarm device proposed in the present invention.

[0036] Description of reference numerals:

[0037] 1-displacement sensor, 2-tested plate, 3-support seat, 4-support plate, 5-busbar tube, 6-expansion joint, 11-first displacement sensor, 12-second displacement sensor, 13-third displacement sensor, 14-base, 15-power supply module, 16-housing, 20-first tested plate, 21-second tested plate. DETAILED DESCRIPTION

[0038] The specific implementation of the present invention is described below in conjunction with the accompanying drawings and embodiments:

[0039] It should be noted that the structures, colors, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0040] At the same time, in the description of the present invention, it should be understood that the terms "one end", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0042] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0043] like Figure 1-Figure 4As shown, the GIS expansion joint intelligent detection and alarm device of the present invention includes a sensor component, a repeater and a monitoring terminal; the sensor component is responsible for real-time acquisition of the displacement data of the expansion joint 6, the repeater is responsible for receiving the displacement data of the sensor component and forwarding the displacement data to the monitoring terminal, and the monitoring terminal is responsible for receiving and processing the displacement data.

[0044] Repeaters can extend the communication distance and improve the reliability of data transmission. When a transmission network fails, it only affects individual transmission segments. Each repeater can receive signals from up to 36 displacement sensors 1. The main advantages of repeaters are simple installation, easy use, and relatively low price; they not only extend the network distance, but also connect networks with different transmission media.

[0045] The output signal of the sensor component is an absolute displacement value. Even if the power is interrupted and reconnected, the data will not be lost, and there is no need to reset to zero. In addition, the sensitive element is non-contact, and even if the detection is repeated continuously, it will not cause any wear to the sensor, which can greatly improve the reliability and service life of the detection.

[0046] The sensor component includes a displacement sensor 1 and a measured plate 2. The displacement sensor 1 is used to send a signal, and the measured plate 2 is used to bounce the signal sent by the displacement sensor 1. By measuring the round-trip time of the millimeter wave, the value of the distance D to the target obstacle is obtained.

[0047] The displacement sensor 1 is preferably a millimeter wave displacement sensor, and the displacement is tested using a millimeter wave radar. The millimeter wave has high resolution, good directivity, strong anti-interference ability and good detection performance; and the atmospheric attenuation is small, it has better penetration into smoke and dust, and is less affected by the weather, so that the millimeter wave sensor can work in complete darkness or under direct sunlight. These characteristics determine that the millimeter wave radar has the ability to work all day and all weather. The millimeter wave displacement sensor is small in size, light in weight, and durable, and can meet the protection level (IP) 69K standard. When the millimeter wave is emitted, it bounces back through the measured plate 2. By accurately measuring the time it takes for the millimeter wave to go back and forth, assuming that the distance is D, the time is T, and the speed of light is C, according to D=(C*T) / 2, the value of the distance D from the target obstacle can be obtained.

[0048] The monitoring terminal is provided with a data receiving module, a data analysis and processing module, a communication module, an alarm module and a storage module; the data receiving module is used to receive the displacement data sent by the repeater, the analysis and processing module is used to analyze and process the displacement data, the monitoring terminal sets the displacement threshold of the expansion joint 6, the alarm module is activated when the data received by the monitoring terminal exceeds the threshold, the storage module stores the data received by the monitoring terminal, the monitoring terminal processes and analyzes the data sent by the displacement sensor 1, and issues a warning when the data exceeds the threshold.

[0049] The displacement sensor 1 includes a first displacement sensor 11, a second displacement sensor 12 and a third displacement sensor 13. The first displacement sensor 11, the second displacement sensor 12 and the third displacement sensor 13 have the same structure. The first displacement sensor 11, the second displacement sensor 12 and the third displacement sensor 13 are fixed on the outer shell 16 of the expansion joint 6 in the form of an equilateral triangle; the measured plate 2 includes a first measured plate 20, a second measured plate 21 and a third measured plate 2, and the position of the measured plate 2 corresponds to the position of the displacement sensor 1.

[0050] This device uses triangulation for measurement, that is, three sensor components are installed on each expansion joint 6 to perform all-round real-time detection of the cylinder, also known as "triangulation". This detection method has the characteristics of simple structure, fast test speed, strong real-time detection effect and high precision. The deformation of the expansion joint 6 is mainly caused by temperature changes, which is a physical quantity that changes relatively slowly. The detection data of the three sensors corroborate each other, and through data analysis, the deformation of the expansion joint 6 can be judged, and the detection effect is more ideal.

[0051] Specifically, millimeter wave displacement sensors are provided at three positions of each expansion joint 6 observation position. The distances of the three displacement sensors 1 are the same when they are installed and there are no abnormalities, and the detection data are generally not much different. Once the expansion joint 6 fails seriously or the foundation of the GIS equipment settles, the angle, distance, etc. will change, and the detection data will also change. When the detection data of two of the three sensors change greatly, it is possible that the foundation of the GIS equipment has settled. The detection data of the three sensors corroborate each other, and the displacement of the expansion joint 6 can be judged by analyzing each data obtained by the detection.

[0052] The displacement sensor 1 comprises a base 14, a circuit board, a limiting ring, a power supply module 15 and a housing 16. The circuit board and the limiting ring are both arranged inside the base 14. The wires of the circuit board pass through the limiting ring to connect to the power supply module 15. The housing 16 and the base 14 are threadedly connected, and the power supply module 15 is arranged inside the housing 16. The base 14 is the supporting structure of the entire displacement sensor 1, which is used to fix and accommodate other components inside the sensor. The circuit board is the core component of the displacement sensor 1, which integrates the electronic components and circuits required by the sensor. The limiting ring is usually used to limit the movement range of the circuit board to ensure that the position of the circuit board inside the base 14 is stable. The housing is used to protect the power supply module 15 to prevent it from being affected by the external environment.

[0053] The displacement sensor 1 and the measured plate 2 are both fixed on the expansion joint 6 through the support seat 3. The support seat 3 adopts a "U"-shaped groove, and the opening direction corresponds to the expansion joint 6. The displacement sensor 1 is fixed on the support seat 3 through the support plate 4. The support plate 4 is provided with an opening for the base 14 of the displacement sensor 1 to pass through and thus be fixed on the support plate 4. The support plate 4 adopts an "L"-shaped structure, and the ground is fixed on the base 14. The vertical plate has a hole for fixing the displacement sensor 1. The center point of the displacement sensor 1 corresponds to the center point of the measured plate 2, ensuring that the signal sent by the displacement sensor 1 can be bounced back by the measured plate 2.

[0054] The sensor components send the collected data to the repeater through the Lora wireless communication technology. The Lora wireless communication technology has outstanding advantages, such as long distance, low complexity and low power consumption. It can also save tedious wiring work and improve the coverage of the repeater.

[0055] The displacement sensor 1 and the repeater both adopt a dual-mode power supply method that combines solar power supply and battery power supply. This device is designed to provide online detection for substations in the Xinjiang Uygur Autonomous Region. The Xinjiang Uygur Autonomous Region has a special geographical environment and abundant sunlight. There is sunlight for at least 8 hours a day. The method of combining solar power supply with batteries is adapted to local conditions, which is convenient and clean. The displacement sensor 1 and the repeater automatically switch to battery power supply in harsh environments, extreme weather and insufficient solar power supply.

[0056] The detection principle of this device is as follows: Based on the characteristics of greater vibration at the parts of the busbar that are subjected to greater stress and at the connections of important components, busbar topology and installation structure measurement point layout rules are proposed. Displacement sensor 1 is arranged according to this rule and then the displacement data of each measurement point is collected. The monitoring terminal receives these data in a centralized manner and issues an early warning reminder when the vibration data exceeds the maximum limit specified by the manufacturer, so that the operating personnel can promptly detect abnormal vibrations of the expansion joint 6 of the GIS busbar tube 5 during operation. Once the expansion joint 6 fails seriously or the GIS equipment foundation is displaced and deformed, changes in angle, distance, etc. will occur, and the detection data will also change. During the detection process, the operation and maintenance staff do not need to manually detect the data in real time. The displacement data of the expansion joint 6 is collected using sensor components and transmitted to the monitoring terminal, which reduces the inspection work of the staff, saves labor costs, and realizes real-time monitoring.

[0057] In addition, due to the ability of real-time monitoring, when the busbar tube 5 fails or deforms, the staff can obtain the specific fault information in the first time, saving a lot of unnecessary time. At the same time, it improves the safety of busbar operation, and can effectively prevent accidents such as busbar support cracking, and can avoid safety hazards and economic losses caused by unfavorable emergency repairs.

[0058] This detection device is particularly suitable for the northwest region with large temperature difference between day and night, high altitude areas, permafrost areas and geological settlement areas in the south, and has great promotion value and good economic benefits.

[0059] Embodiment 1:

[0060] The device of the present invention focuses on the technical research and development of existing GIS equipment, mainly on the components related to the settlement of substation GIS equipment, specifically the foundation or the equipment itself, and designs a GIS expansion joint intelligent detection and alarm device, which specifically includes a detection sensor component, a data transmission repeater and a monitoring terminal for data processing;

[0061] The sensor component is responsible for collecting the displacement data of the expansion joint 6 in real time, the repeater is responsible for receiving the displacement data of the sensor component and forwarding the displacement data to the monitoring terminal, and the monitoring terminal is responsible for receiving and processing the displacement data.

[0062] The sensor component sends the collected real-time data to the repeater, and the repeater sends the received data to the monitoring terminal. The monitoring terminal receives the data and processes the received data to obtain relevant data.

[0063] Specifically, the sensor component includes a displacement sensor 1 and a measured plate 2. The displacement sensor 1 is used to send a signal, and the measured plate 2 is used to bounce the signal sent by the displacement sensor 1. By measuring the round trip time of the millimeter wave, the value of the distance D to the target obstacle is obtained.

[0064] The displacement sensor 1 and the plate under test 2 are arranged in a straight line. The displacement sensor 1 sends a signal to the plate under test 2, and the plate under test 2 rebounds the received signal to the displacement sensor 1. The specific detection process is completed by the displacement sensor 1, and the plate under test 2 is used to assist the displacement sensor 1 in completing the detection of the expansion joint deformation data.

[0065] Embodiment 2:

[0066] Based on Example 1, the monitoring terminal needs to analyze and process the data detected by the sensor component. Therefore, the monitoring terminal should at least be provided with a data receiving module, a data analysis and processing module, a communication module, an alarm module and a storage module.

[0067] The data receiving module is used to receive the displacement data sent by the repeater, and the analysis and processing module is used to analyze and process the displacement data. The monitoring terminal sets the displacement threshold of the expansion joint 6. When the data received by the monitoring terminal exceeds the threshold, the alarm module is activated, and the storage module stores the data received by the monitoring terminal; the control terminal takes effect after analyzing and processing the data.

[0068] Embodiment 3:

[0069] On the basis of Embodiment 2 of the present invention, three sensor components are provided, specifically, the displacement sensor 1 comprises a first displacement sensor 11, a second displacement sensor 12 and a third displacement sensor 13, the first displacement sensor 11, the second displacement sensor 12 and the third displacement sensor 13 have the same structure, and the first displacement sensor 11, the second displacement sensor 12 and the third displacement sensor 13 are fixed on the housing of the expansion joint 6 in the form of an equilateral triangle;

[0070] The tested plate 2 includes a first tested plate 20 , a second tested plate 21 and a third tested plate 2 , and the position of the tested plate 2 corresponds to the position of the displacement sensor 1 .

[0071] Millimeter wave displacement sensors are installed at three locations of each expansion joint 6 observation position. The distances of the three displacement sensors 1 are the same when they are installed and there are no abnormalities, and the detection data are generally not much different. Once the expansion joint 6 fails seriously or the foundation of the GIS equipment settles, the angle, distance, etc. will change, and the detection data will also change. When the detection data of two of the three sensors change greatly, it is possible that the foundation of the GIS equipment has settled. The detection data of the three sensors corroborate each other, and the displacement of the expansion joint 6 can be judged by analyzing each data obtained by the detection.

[0072] As another embodiment of the present invention, the number of sensor components can be set to multiple, which can be specifically determined through feedback from field data. Since the deformation of the expansion joint 6 is mainly caused by temperature changes, which is a physical quantity that changes relatively slowly, and the cross-section of the GIS expansion joint is circular, only one or two sensor components may lack detection of a certain side, which may lead to inaccurate monitoring results. If three or more sensor components are set, the detection data between multiple sensor components can corroborate each other, and the deformation of the expansion joint 6 can be judged through data analysis, and the detection effect is more ideal.

[0073] Embodiment 4:

[0074] On the basis of Example 3, in order to solve the problem that the deformation of the GIS expansion joint detected by the displacement sensor needs to be fixed on the GIS expansion joint, the first displacement sensor 11 is provided with a base 14, a circuit board, a limit ring, a power supply module 15 and a shell 16. The circuit board and the limit ring are both arranged inside the base 14. The wires of the circuit board pass through the limit ring to connect to the power supply module 15. The shell 16 and the base 14 are threadedly connected, and the power supply module 15 is arranged inside the shell 16.

[0075] The base 14 is the supporting structure of the entire displacement sensor 1, which is used to fix and store other components inside the sensor. The circuit board is the core component of the displacement sensor 1, which integrates the electronic components and circuits required for the sensor. The limit ring is usually used to limit the movement range of the circuit board to ensure that the position of the circuit board inside the base 14 is stable. The outer shell is used to protect the power supply module 15 to prevent it from being affected by the external environment.

[0076] Embodiment 5:

[0077] On the basis of Example 4, the displacement sensor 1 and the plate under test 2 are both fixed on the expansion joint 6 through the support seat 3. The support seat 3 adopts a "U"-shaped groove, and the opening direction corresponds to the expansion joint 6. The displacement sensor 1 is fixed on the support seat 3 through the support plate 4. The support plate 4 is provided with an opening for the base 14 of the displacement sensor 1 to pass through it and thus be fixed on the support plate 4. The support plate 4 adopts an "L"-shaped structure, and the ground is fixed on the base 14. The vertical plate has a hole for fixing the displacement sensor 1. The center point of the displacement sensor 1 corresponds to the center point of the plate under test 2, ensuring that the signal sent by the displacement sensor 1 can be bounced back by the plate under test 2.

[0078] Embodiment 6:

[0079] On the basis of implementation 5, the sensor components send the collected data to the repeater through the Lora wireless communication technology. The Lora wireless communication technology has outstanding advantages, such as long distance, low complexity, and low power consumption. It can also save tedious wiring work and improve the coverage of the repeater.

[0080] Embodiment 7:

[0081] Based on implementation 6, the displacement sensor 1 preferably uses a millimeter wave displacement sensor, and uses a millimeter wave radar to test the displacement. The millimeter wave has high resolution, good directivity, strong anti-interference ability and good detection performance; and has low atmospheric attenuation, better penetration of smoke and dust, and is less affected by weather, so that the millimeter wave sensor can work in complete darkness or under direct sunlight. These characteristics determine that the millimeter wave radar has the ability to work all day and all weather. The millimeter wave displacement sensor is small in size, light in weight, and durable, and can meet the protection level (IP) 69K standard.

[0082] Embodiment 8:

[0083] On the basis of implementation 7, the displacement sensor 1 and the repeater both adopt a dual-mode power supply method combining solar power supply and battery power supply. This device is designed specifically for online detection of substations in Xinjiang Uygur Autonomous Region. Xinjiang Uygur Autonomous Region has abundant sunlight, with at least 8 hours or more of sunlight a day. The method of combining solar power supply with battery power supply is adapted to local conditions, which is convenient and clean. The displacement sensor 1 and the repeater automatically switch to battery power supply in harsh environments, extreme weather and insufficient solar power supply.

[0084] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

[0085] Many other changes and modifications may be made without departing from the concept and scope of the present invention.It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. GIS expansion joint intelligent detection alarm device, characterized in that: Contains sensor components, repeaters and monitoring terminals; The sensor component is responsible for collecting displacement data of the expansion joint (6) in real time, the repeater is responsible for receiving the displacement data of the sensor component and forwarding the displacement data to the monitoring terminal, and the monitoring terminal is responsible for receiving and processing the displacement data; The sensor component comprises a displacement sensor (1) and a measured plate (2); the displacement sensor (1) is used to send a signal, and the measured plate (2) is used to bounce back the signal sent by the displacement sensor (1).

2. The GIS expansion joint intelligent detection and alarm device according to claim 1, characterized in that: The monitoring terminal is provided with a data receiving module, a data analysis and processing module, a communication module, an alarm module and a storage module; the data receiving module is used to receive the displacement data sent by the repeater, the analysis and processing module is used to analyze and process the displacement data, the monitoring terminal sets a displacement threshold of the expansion joint (6), the alarm module is activated when the data received by the monitoring terminal exceeds the threshold, and the storage module stores the data received by the monitoring terminal.

3. The GIS expansion joint intelligent detection and alarm device according to claim 1, characterized in that: The displacement sensor (1) comprises a first displacement sensor (11), a second displacement sensor (12) and a third displacement sensor (13); the first displacement sensor (11), the second displacement sensor (12) and the third displacement sensor (13) have the same structure; the first displacement sensor (11), the second displacement sensor (12) and the third displacement sensor (13) are fixed on the outer shell of the expansion joint (6) in the form of an equilateral triangle; The measured plate (2) comprises a first measured plate (20), a second measured plate (21) and a third measured plate (2), and the position of the measured plate (2) corresponds to the position of the displacement sensor (1).

4. The GIS expansion joint intelligent detection and alarm device according to claim 1, characterized in that: The first displacement sensor (11) comprises a base (14), a circuit board, a limiting ring, a power supply module (15) and a housing (16); the circuit board and the limiting ring are both arranged inside the base (14); a wire of the circuit board passes through the limiting ring to connect to the power supply module (15); the housing (16) and the base (14) are threadedly connected; and the power supply module (15) is arranged inside the housing (16).

5. The GIS expansion joint intelligent detection and alarm device according to claim 1, characterized in that: The displacement sensor (1) and the measured plate (2) are both fixed on the expansion joint (6) via a support seat (3), and the displacement sensor (1) is fixed on the support seat (3) via a support plate (4).

6. The GIS expansion joint intelligent detection and alarm device according to claim 1, characterized in that: The displacement sensor and the repeater are connected using LORA wireless transmission technology.

7. The GIS expansion joint intelligent detection and alarm device according to claim 1, characterized in that: The displacement sensor (1) is specifically a millimeter wave displacement sensor (1).

8. The GIS expansion joint intelligent detection and alarm device according to claim 1, characterized in that: The displacement sensor (1) and the repeater both adopt a dual-mode power supply method combining solar power supply and battery power supply.

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