Gas insulated switchgear production workshop environment monitoring device

Abstract

The utility model discloses an environment monitoring device for a cubicle gas insulated switchgear production workshop. The environment monitoring device comprises a terminal node, a routing node, a wireless sensor network coordinator, a gateway and a remote monitoring computer, the terminal node, the routing node, the wireless sensor network coordinator, the gateway and the remote monitoring computer are connected in sequence; the terminal node is used for receiving an instruction sent by the coordinator and collecting environment information; the routing node is used for forwarding data information of the child node managed by the routing node; the coordinator is used for establishing and managing a wireless sensor network, receiving data transmitted by the acquisition nodes and sending a command to the acquisition nodes; the gateway is a communication bridge between the wireless sensor network and the Ethernet and is used for realizing protocol conversion and data transfer among different networks; and the remote monitoring computer is used for displaying the environmental parameters of the production area. The utility model has the advantages of simple structure, convenience for mastering the environment parameter change condition in the production process in real time, and the like.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the technical field of the gassing cabinet, specifically relates to a gassing cabinet production workshop environment monitoring devices. BACKGROUND

[0002] The gassing cabinet (C-GIS) is sealed with each high-voltage component and device by using low-pressure insulating gas as insulating medium. Therefore, its biggest feature is that it is extremely strong in environmental adaptability, and because of the introduction of insulating gas medium, it can greatly reduce the product size and thus reduce the land occupation. Compared with the conventional air-insulated switch cabinet, it has obvious advantages in economy, applicability, reliability and miniaturization, and it is an inevitable trend to replace the conventional switch cabinet. In recent years, its use has been increasing year by year.

[0003] Using environmentally friendly gas (such as compressed air or high-purity nitrogen) as insulating medium is the ultimate goal of the development of gassing cabinet products. However, at the present stage, most types of gassing cabinets at home and abroad still use low-pressure SF6 gas as insulating medium. The introduction of insulating gas medium brings many benefits, but at the same time, it also puts forward higher requirements on the production and process of the product, and brings a series of problems, as follows:

[0004] 1. Gas tightness problem

[0005] The gas tightness problem is the primary problem that must be concerned in the production of gassing products, because once the product leaks, almost all the product performance cannot be guaranteed. To ensure the service life ≥ 30 years, the annual leakage rate of the gassing cabinet should be controlled below 0.5% per year.

[0006] 2. Gas moisture content

[0007] The gas moisture content is crucial to the product quality of gas-insulated switchgear, and the micro-water content directly affects its insulation level. For SF6 switchgear, under the action of electric arc, SF6 will react with water during decomposition and generate a variety of toxic gases, which seriously endanger human health; some of the products are also corrosive substances that can corrode the internal components of the switchgear.

[0008] 3. Temperature and humidity monitoring

[0009] The air-charge cabinet has high requirements on the temperature and humidity of the production environment. The air-charge cabinet uses ordinary welding equipment and welding technology, which cannot guarantee the air tightness of the weld. In order to guarantee the air tightness, argon arc welding or laser welding is required under the condition of constant temperature and humidity, so as to meet the sealing requirements in the service life. The best welding method is to use the advanced laser welding technology in the world, which can meet the requirements of air tightness, strength, rigidity and appearance. Laser welding has high requirements on the temperature and humidity of the environment, so it is necessary to monitor the temperature and humidity of the production environment in real time.

[0010] 4、Particle size monitoring

[0011] The air tank and the internal breaker mechanism of the air-charge cabinet are important components of power switch equipment, and are also mechanical equipment with high failure rate of wear and tear. The cleanliness of the inside greatly affects the working efficiency of the mechanism. Therefore, it is necessary to monitor the particle size of the production environment during the production process, and the particle size should meet the requirement of ≤8 levels. Practical new type content

[0012] In view of the technical problems existing in the prior art, the utility model provides a kind of air-charge cabinet production workshop environment monitoring device with simple structure, which is convenient for real-time mastering the change of environmental parameter in production process.

[0013] To solve the above technical problems, the technical scheme provided by the utility model is as follows:

[0014] A kind of air-charge cabinet production workshop environment monitoring device, including terminal node, routing node, wireless sensor network coordinator, gateway and remote monitoring computer;The terminal node, routing node, wireless sensor network coordinator, gateway and remote monitoring computer are sequentially connected;The terminal node is the sensing end of wireless sensor network, for receiving the instruction sent by coordinator and collecting environmental information;The routing node is the relay node of wireless sensor network, for forwarding the data information of the child node managed by itself, and uploading the data collected by the sensor carried by itself;The coordinator is responsible for establishing and managing wireless sensor network, receiving the data transmitted by collection node and sending command to collection node;The gateway is the communication bridge of wireless sensor network and Ethernet, for realizing protocol conversion and data relay between different networks;The remote monitoring computer is used to display the environmental parameters of production area.

[0015] Preferably, the terminal node and the routing node each include a sensor module, a control module, a wireless communication module and a power module;The sensor module is connected to the control module, the control module is connected to the wireless communication module, and the power module is connected to the sensor module, the control module and the wireless communication module respectively to provide power supply for each module.

[0016] Preferably, the sensor module comprises a temperature and humidity sensor, a granularity sensor and an SF6 density sensor.

[0017] Preferably, the power module is a lithium battery.

[0018] Preferably, the gateway comprises a microprocessor, an SD RAM, a NAND FLASH, an LCD, an RS-232 serial port and an Ethernet interface; the SD RAM, the NAND FLASH, the LCD, the RS-232 serial port and the Ethernet interface are connected with the microprocessor.

[0019] Preferably, the protocol device is connected with the gateway through a serial port.

[0020] Preferably, a light intensity sensor is further comprised, and the light intensity sensor is connected to the wireless sensor network.

[0021] Preferably, a helium mass spectrum air tightness instrument is further comprised, and the helium mass spectrum air tightness instrument is connected to the wireless sensor network.

[0022] Compared with the prior art, the utility model has the advantages that:

[0023] The inflation cabinet production workshop environment monitoring device of the utility model, through multiple sensors arranged in the production workshop, real-time monitoring of the environmental data of the production workshop, and through the Internet of Things communication, real-time collection of the environmental monitoring data of the production workshop, data transmission to the master station system, at the same time, parameter threshold value can be set, alarm, early warning according to the production environment requirement, improve the quality, the qualified rate of product and other data, eliminate hidden troubles. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is the topological structure diagram of the monitoring device of the utility model in the embodiment.

[0025] Fig. 2 It is the block structure diagram of the monitoring device of the utility model in the embodiment.

[0026] Fig. 3 It is the block structure diagram of the terminal node and the routing node of the utility model in the embodiment.

[0027] Fig. 4 It is the circuit principle diagram of the terminal node and the routing node of the utility model in the embodiment.

[0028] Fig. 5 It is the block structure diagram of the coordinator of the utility model in the embodiment.

[0029] Fig. 6 It is the block structure diagram of the gateway of the utility model in the embodiment.

[0030] Legend: 1, terminal node; 2, routing node; 3, coordinator; 4, gateway; 5, remote monitoring computer. DETAILED DESCRIPTION

[0031] The utility model is further described below in combination with the drawings and specific embodiments.

[0032] As Figs. 1-2 shown, the gas-filled cabinet production workshop environment monitoring device of the embodiment of the utility model, including terminal node 1, routing node 2, wireless sensor network coordinator 3, gateway 4 and remote monitoring computer 5;

[0033] Terminal node 1 is the perception end of wireless sensor network, and it receives the instruction sent by coordinator 3 and collects environmental information;

[0034] Routing node 2 is the relay node of wireless sensor network, and it forwards the data information of the subnode managed by itself and can upload the data collected by the sensor carried by itself.

[0035] Coordinator 3 is responsible for establishing and managing network, receiving the data transmitted by the collection node and sending control command to the collection node; gateway 4 serves as the communication bridge of wireless sensor network and Ethernet, and plays the role of protocol conversion and data transfer between different networks.

[0036] Remote monitoring computer 5 mainly provides visual interface, displays the environmental parameters of enterprise production area on the visual interface of remote monitoring computer 5 and controls the collection node through the visual interface.

[0037] The monitoring device of the utility model, according to the characteristics of many monitoring points and large production area of production enterprises, adopts the tree network topology structure of wireless sensor network to expand the coverage range of wireless sensor network.

[0038] Terminal node 1 connects helium mass spectrometer, temperature and humidity sensor, granularity sensor, illumination sensor and SF6 density sensor to form data collection group, collects the parameters such as temperature, humidity, SF6 density and granularity in the production process, transmits data to coordinator 3 through LoRa wireless communication network, coordinator 3 packs data and uses serial port to transmit data to gateway 4, gateway 4 analyzes data and repackages data and then transmits data to remote monitoring computer 5 through Ethernet.

[0039] As Figs. 3-4 shown, the hardware of terminal node 1 and routing node 2 is the same, which is composed of sensor module, control module, wireless communication module and power module.

[0040] The sensor module mainly senses the environmental parameters. The stability, accuracy and cost are comprehensively considered in selection, especially the normal work in harsh environment, including the temperature and humidity sensor DHT11, the particle sensor MQ-2 and the SF6 density sensor TGS2611.

[0041] The control module adopts the CC2530 chip of TI company, which integrates the LoRa radio frequency front end, memory and 8051 microprocessor.

[0042] The communication module adopts the E220-900MM22S chip. The chip is a super-small volume chip independently developed by Yibaitian based on the new generation LoRa radio chip LLCC68 produced by Semtech company, which is suitable for 433MHz / 470MHz, 868MHz / 915MHz patch LoRa wireless module. The industrial-grade 32MHz crystal oscillator is used, and the anti-interference performance and communication distance are further improved. The transmission distance is farther, the speed is faster and the power consumption is lower. The new LoRa modulation technology is adopted, which is far superior to the FSK and GFSK modulation methods in anti-interference performance and communication distance. The LoRa mode supports 1.76kbps-62.5kbps data transmission rate, and the FSK mode supports up to 300kbps data transmission rate. The transmission power can reach 22dBm, which can be adjusted by software in multiple stages according to the actual situation. Under ideal conditions, the communication distance can reach 6km.

[0043] The power module selects lithium battery power supply, and the theoretical running time is 8 years.

[0044] The main task of the terminal node 1 is network connection, data acquisition and uploading. The terminal node 1 data acquisition adopts intermittent acquisition mode. When the terminal node 1 is idle, it enters sleep state to reduce power consumption. When the intermittent period arrives, it automatically wakes up and collects environmental information. At the same time, the threshold value is set for the terminal node 1 during software development. When the collected data value is higher than the set threshold value, the data is uploaded, and when the collected data value is lower than the threshold value, the data is discarded. This way not only reduces the communication frequency of the terminal node 1, but also achieves the purpose of reducing energy consumption and prolonging the life of the terminal node 1.

[0045] The routing node 2 has two main functions: data relay and data acquisition. Compared with the terminal node 1, the routing node 2 adds the data forwarding function. The routing node 2 forwards the data uploaded by the terminal node 1 to the coordinator 3, and also uploads the data collected by itself to the coordinator 3.

[0046] As Fig. 5As shown, the coordinator 3 is the core of the LoRa network, and only one coordinator 3 can exist in the same LoRa network, which is mainly responsible for establishing the network, allocating 16-bit addresses of the sub-nodes, allowing other nodes to join and exit, and allocating IDs, etc.; at the same time, receiving the data transmitted by the collection nodes and sending control commands to the collection nodes, and uploading the data to the gateway 4 or receiving the control commands from the gateway 4.

[0047] As shown in the figure, Fig. 6 As shown, the gateway 4 takes the microprocessor S5pv210 produced by Samsung Company as the core, and the peripheral hardware includes SDRAM, NAND FLASH, LCD, RS-232 serial port and one 10M / 100M adaptive Ethernet interface. The CPU of the coordinator 3 is connected with the CPU of the gateway 4 through UART. The gateway 4 uses network connection with the remote monitoring computer 5, utilizes TCP / IP protocol, realizes data interaction of the coordinator 3 and the remote monitoring upper computer. The S5pv210 microprocessor is stable in performance and strong in computing capacity, and can meet the requirements of the wireless sensor network gateway 4.

[0048] Taking the ARM Cortex-A8 processor as the embedded gateway 4 of the LoRa wireless sensor network, the data transmission of the gateway 4 to the remote monitoring computer 5 is realized through Ethernet, so that the management personnel can master the change of the environmental parameters in the production process in real time, and the purpose of ensuring safe production is achieved.

[0049] The utility model discloses a wireless sensor network based on LoRa wireless communication protocol, successfully set up the on -line environmental monitoring device of the gas-filled cabinet production workshop. The device places multiple terminal nodes 1 in the production area to collect, monitor in real time and overrun alarm to helium mass spectrometer, temperature and humidity, smoke concentration and SF6 gas concentration etc., and uploads data to remote terminal in time, and carries out the green digitization authentication of state grid.

[0050] The utility model discloses a vacuum box method is carried out helium mass spectrometer gas tightness detection, synchronously to vacuum box and the detected workpiece vacuumizing, keeps the pressure difference of workpiece inside and outside constant, improves the detection efficiency, and can maximumly protect the product from being damaged. At the same time, the data of helium mass spectrometer is uploaded to the environmental monitoring system in real time with LoRa wireless communication module, retains product historical data, factory data, provides data model support for comparing future and on -the -spot data.

[0051] The utility model discloses a water content in gas, adopts SF6 micro water content sensor to monitor gas cylinder, detects its micro water content before use, can use only in line with standard, simultaneously, installs micro water sensor in the gas tank, monitors the micro water content in the tank body in real time, and data transmission to environmental monitoring system, retains product historical data, factory data, provides data model support for comparing future and on -the -spot data.

[0052] The utility model discloses a production workshop environment monitoring system of gas -filled switchgear based on internet of things communication, through the arrangement of multiple sensors in production workshop, the environmental data of production workshop are monitored in real time, and through internet of things communication, the environmental monitoring data of production workshop are collected in real time, and the data are transmitted to the main station system. Meanwhile, parameter threshold value can be set, and alarm, early warning are carried out according to production environment requirement, and the data such as the quality, the pass rate of product are improved, and the hidden danger of failure is prevented.

[0053] The utility model discloses a production workshop environment monitoring system of gas -filled switchgear based on internet of things communication, through the arrangement of multiple sensors in production workshop, the environmental data of production workshop are monitored in real time, and through internet of things communication, the environmental monitoring data of production workshop are collected in real time, and the data are transmitted to the main station system. Meanwhile, parameter threshold value can be set, and alarm, early warning are carried out according to production environment requirement, and the data such as the quality, the pass rate of product are improved, and the hidden danger of failure is prevented.

[0054] The above is only the preferred implementation of the utility model, the protection scope of the utility model is not only limited to the above embodiment, and all technical schemes under the idea of the utility model belong to the protection scope of the utility model. It should be pointed out that for the ordinary skilled in the art, a number of improvements and refinements without departing from the principle of the utility model are regarded as the protection scope of the utility model.

Claims

1. An air chamber production plant environment monitoring device, characterized by, It comprises a terminal node (1), a routing node (2), a wireless sensor network coordinator (3), a gateway (4) and a remote monitoring computer (5); the terminal node (1), the routing node (2), the wireless sensor network coordinator (3), the gateway (4) and the remote monitoring computer (5) are sequentially connected; the terminal node (1) is the sensing end of the wireless sensor network, used for receiving instructions sent by the coordinator (3) and collecting environmental information; the routing node (2) is the relay node of the wireless sensor network, used for forwarding data information of the sub-nodes managed by itself and uploading data collected by the sensor carried by itself; the coordinator (3) is used for establishing and managing the wireless sensor network, receiving data sent by the collection node and sending commands to the collection node; The gateway (4) is the communication bridge of the wireless sensor network and the Ethernet, used for realizing protocol conversion and data transfer between different networks; the remote monitoring computer (5) is used for displaying environmental parameters of the production area; The terminal node (1) and the routing node (2) both comprise a sensor module, a control module, a wireless communication module and a power module; the sensor module is connected with the control module, the control module is connected with the wireless communication module, and the power module is connected with the sensor module, the control module and the wireless communication module respectively, used for providing power required by each module; The sensor module comprises a temperature and humidity sensor, a granularity sensor and an SF6 density sensor; It also comprises an illumination sensor, which is connected to the wireless sensor network; It also comprises a helium mass spectrometer leak detector, which is connected to the wireless sensor network.

2. The gasholder production plant environment monitoring device according to claim 1, characterized in that, The power module is a lithium battery.

3. The gasholder production plant environment monitoring device according to claim 1 or 2, characterized in that, The gateway (4) comprises a microprocessor, an SD RAM, a NAND FLASH, an LCD, an RS-232 serial port and an Ethernet interface; the SD RAM, the NAND FLASH, the LCD, the RS-232 serial port and the Ethernet interface are all connected with the microprocessor.

4. The gasholder production plant environment monitoring device according to claim 1 or 2, characterized in that, The coordinator (3) is connected with the gateway (4) through a serial port.

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