Wireless transmission SF6 density micro water sensor

Abstract

The utility model belongs to the field of GIS switch equipment SF6 density micro -water on -line monitoring, concretely relates to a wireless transmission SF6 density micro -water sensor, including three -way valve piece, the inside of three -way valve piece is equipped with the air chamber, be equipped with the air inlet, exhaust port and detection interface on three -way valve piece, the air inlet is used for with the SF6 gas pipeline connection of GIS equipment, the exhaust port is used for discharging the SF6 gas in the air chamber, be equipped with sensor main part on detection interface, sensor main part includes shell and battery assembly, be equipped with circuit mainboard in the shell, and the integrated density sensor, micro -water sensor, signal processing module and wireless communication module are on the circuit mainboard, be equipped with signal antenna on the shell, signal antenna is connected with wireless communication module electrically, and battery assembly is used for providing power supply, replace traditional wired connection mode through wireless transmission mode to reduce the field construction amount, shorten installation debugging period, reduce manpower and material resources investment, and improve the reliability of monitoring system.

Description

Technical Field

[0001] This utility model belongs to the field of online monitoring of SF6 density and micro-water content in GIS switchgear, and specifically relates to a wireless transmission SF6 density and micro-water content sensor. Background Technology

[0002] In GIS equipment, the density and moisture content of SF6 gas are key parameters affecting the equipment's insulation performance and operational safety. A utility model patent with patent number CN 214201061 U discloses an SF6 moisture density detection sensor. In use, the first self-sealing connector of the base is connected to the GIS equipment, allowing SF6 gas to enter the gas chamber of the base. The sensor located inside the gas chamber measures the SF6 gas and converts the sensed temperature and pressure into resistance and voltage signals, respectively, which are transmitted to a circuit board. The circuit board amplifies, filters, performs AD sampling, and calculates the collected temperature and pressure signals to obtain the SF6 density value. Then, the temperature, pressure, and density signals are output to a socket, and transmitted to a remote monitoring device via an aviation connector on the socket, achieving online monitoring of SF6 moisture density. However, the signal transmission between the aviation connector and the monitoring device is achieved via a wired connection, which has the following problems:

[0003] 1. Large on-site construction workload: It requires laying a large number of cables, which consumes manpower and material resources and is easily restricted by the site environment;

[0004] 2. Difficult installation and maintenance: Errors are prone to occur during cable connection, increasing the difficulty and time of installation and debugging. Furthermore, cables are prone to aging and damage, leading to signal interruption or data distortion.

[0005] 3. High cost: The cost of cables and related accessories, as well as subsequent maintenance costs, are high, which is not conducive to project cost control.

[0006] Therefore, there is an urgent need for a wireless SF6 density micro-water sensor to reduce construction and maintenance costs and improve the reliability of the monitoring system. Utility Model Content

[0007] To overcome the shortcomings of existing technologies, this utility model proposes a wireless transmission SF6 density micro-water sensor, which replaces the traditional wired connection method with wireless transmission, thereby reducing on-site construction work, shortening the installation and commissioning cycle, reducing manpower and material resources, and improving the reliability of the monitoring system.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0009] A wireless transmission SF6 density and micro-moisture sensor includes a three-way valve block with an internal gas chamber. The three-way valve block has an air inlet, an air outlet, and a detection interface. The air inlet is used to connect to the SF6 gas pipeline of a GIS device, the air outlet is used to discharge the SF6 gas from the gas chamber, and the detection interface has a sensor body. The sensor body includes a housing and a battery assembly. The housing contains a circuit board, which integrates a density sensor, a micro-moisture sensor, a signal processing module, and a wireless communication module. The housing has a signal antenna electrically connected to the wireless communication module. The battery assembly provides power to the density sensor, the micro-moisture sensor, the signal processing module, and the wireless communication module.

[0010] Furthermore, the wireless communication module adopts Bluetooth BLE, Wi-Fi 6, Zigbee, LoRaWAN or 5G NR protocol.

[0011] Furthermore, the battery assembly includes a battery compartment detachably connected to the housing, the battery compartment containing a battery that is electrically connected to the circuit board.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] This invention achieves wireless transmission by setting up a wireless communication module and a signal antenna, which can reduce the amount of cable laying on the construction site, avoid a large amount of cable construction, significantly reduce the time of on-site operation, effectively shorten the installation and commissioning cycle, and also reduce the input of manpower and material resources, effectively reducing construction costs and subsequent maintenance costs; in addition, the use of wireless transmission also reduces the failure rate caused by cable connection errors and cable aging failure, and improves the reliability of the monitoring system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 Exploded view;

[0016] In the diagram: 1. Three-way valve block; 11. Inlet port; 12. Exhaust port; 13. Detection port; 2. Housing; 3. Circuit board; 4. Signal antenna; 5. Battery compartment; 6. Battery. Detailed Implementation

[0017] The following detailed description illustrates the specific implementation method:

[0018] Example

[0019] like Figure 1-2As shown, a wireless transmission SF6 density micro-water sensor includes a three-way valve block 1. The three-way valve block 1 has an air chamber inside. The three-way valve block 1 is provided with an air inlet 11, an air outlet 12 and a detection interface 13 that communicate with the air chamber. The air inlet 11 is used to connect to the SF6 gas pipeline of the GIS equipment. The air outlet 12 is used to discharge the SF6 gas in the air chamber. The detection interface 13 is provided with the sensor body.

[0020] The sensor body includes a housing 2 and a battery 6 assembly. The lower end of the housing 2 is threadedly connected to the detection interface 13 of the three-way valve block 1. A circuit board 3 is fixed inside the housing 2. The circuit board 3 integrates a density sensor, a micro-water sensor, a signal processing module, and a wireless communication module. The wireless communication module adopts Bluetooth BLE, Wi-Fi 6, Zigbee, LoRaWAN, or 5G NR protocols. An external signal antenna 4 is installed on the housing 2, and the signal antenna 4 is electrically connected to the wireless communication module. The battery 6 assembly is used to provide power to the density sensor, micro-water sensor, signal processing module, and wireless communication module. The battery 6 assembly includes a battery compartment 5, which is threadedly connected to the upper end of the housing 2. The battery 6 is detachably installed inside the battery compartment 5 and is electrically connected to the circuit board 3.

[0021] In use, the air inlet 11 of the three-way valve block 1 is connected to the SF6 gas pipeline of the GIS equipment, allowing SF6 to enter the gas chamber of the three-way valve block 1. The density and moisture content of the SF6 gas are monitored in real time by the density sensor and micro-moisture sensor on the main circuit board 3. The monitored data is transmitted to the signal processing module of the main circuit board 3 for amplification, filtering, AD conversion and other processing. Then, the data is wirelessly transmitted to the monitoring system in the background through the signal antenna 4, realizing the function of online monitoring of SF6 moisture density.

[0022] This utility model adopts a wireless transmission method, which effectively reduces the amount of wiring work on the construction site, shortens the installation and debugging cycle, reduces the input of manpower and material resources, lowers the cost of construction and subsequent operation and maintenance, and also reduces the failure rate caused by cable connection errors and cable aging failure, ensuring the stability of signal transmission in complex environments and improving the reliability of the monitoring system.

[0023] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A wireless transmission SF6 density micro-water sensor, comprising a three-way valve block (1), wherein the three-way valve block (1) has an internal air chamber, and the three-way valve block (1) is provided with an air inlet (11), an air outlet (12), and a detection interface (13). The air inlet (11) is used to connect to the SF6 gas pipeline of a GIS device, the air outlet (12) is used to discharge the SF6 gas in the air chamber, and the detection interface (13) is provided with a sensor body, characterized in that: The sensor body includes a housing (2) and a battery (6) assembly. The housing (2) contains a circuit board (3), which integrates a density sensor, a micro-water sensor, a signal processing module, and a wireless communication module. The housing (2) contains a signal antenna (4), which is electrically connected to the wireless communication module. The battery (6) assembly provides power to the density sensor, the micro-water sensor, the signal processing module, and the wireless communication module.

2. The wireless transmission SF6 density micro-water sensor according to claim 1, characterized in that: The wireless communication module adopts Bluetooth BLE, Wi-Fi 6, Zigbee, LoRaWAN or 5G NR protocol.

3. The wireless transmission SF6 density micro-water sensor according to claim 1 or 2, characterized in that: The battery (6) assembly includes a battery compartment (5) detachably connected to the outer casing (2), the battery compartment (5) contains a battery (6), and the battery (6) is electrically connected to the circuit board (3).

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