Integrated SF6 gas online sensing device based on Internet of Things

Abstract

The utility model provides an integrated SF6 gas on-line sensing device based on internet of things, which comprises a machine body, a first analysis cavity, a second analysis cavity, a controller and a pump body are arranged in the machine body, the controller is provided with a wireless communication module, a humidity sensor is arranged in the first analysis cavity, the first analysis cavity is communicated with the outside, the input end of the pump body is communicated with the first analysis cavity, and the output end of the pump body is communicated with the second analysis cavity. The output end of the pump body is connected with the first end of a three-way electromagnetic valve, the second end of the three-way electromagnetic valve is communicated with the outside, the third end of the three-way electromagnetic valve is communicated with a second analysis cavity, an SF6 infrared sensor is arranged in the second analysis cavity, the second analysis cavity is communicated with the outside through an exhaust pipe, and an electric control valve is arranged on the exhaust pipe; and the humidity sensor, the pump body, the three-way electromagnetic valve, the SF6 infrared sensor and the electric control valve are electrically connected with the controller. The humidity sensor of the first analysis cavity is used for detecting the air humidity and judging whether the air is in a high-humidity environment or not, and if the air is not in the high-humidity environment, the gas is led into the second analysis cavity for SF6 concentration detection.

Description

Technical Field

[0001] The utility model relates to an integrated on-line SF6 gas sensing device based on the Internet of Things. Background Technique

[0002] Sulfur hexafluoride gas is widely used in the power system and has almost become the only insulating and arc-extinguishing medium used in medium-voltage, high-voltage and extra-high-voltage electrical equipment. Sulfur hexafluoride gas is an inert gas that is colorless, odorless, tasteless, non-toxic, and denser than air, and is not easily mixed with air. Pure sulfur hexafluoride is not toxic to the human body but cannot sustain life. Sulfur hexafluoride is a simple asphyxiant. For this reason, on-line devices for monitoring whether there is sulfur hexafluoride gas leakage are installed on these power equipment to ensure timely alarm prompts in case of sulfur hexafluoride leakage. Sulfur hexafluoride infrared sensors are widely used. They analyze the concentration of sulfur hexafluoride through the infrared spectrum detection principle and have the advantages of high sensitivity and high precision. However, sulfur hexafluoride infrared sensors are not suitable for high-humidity environments. When the humidity in the air is high, sulfur hexafluoride infrared sensors are prone to damage. Although the current on-line devices are equipped with humidity sensors to monitor the air humidity, it is only a humidity prompt and has no protective effect on sulfur hexafluoride infrared sensors.

[0003] Therefore, it is necessary to further improve the cleaning table. Summary of the Utility Model

[0004] To solve the above problems, the utility model proposes an integrated on-line SF6 gas sensing device based on the Internet of Things, and the sensing device has the function of protecting the SF6 infrared sensor.

[0005] The utility model proposes an integrated on-line SF6 gas sensing device based on the Internet of Things, which includes a body. A first analysis chamber, a second analysis chamber, a controller and a pump body are arranged in the body. The controller has a wireless communication module. A humidity sensor is arranged in the first analysis chamber. The first analysis chamber is communicated with the outside. The input end of the pump body is communicated with the first analysis chamber. The output end of the pump body is connected to the first end of a three-way solenoid valve. The second end of the three-way solenoid valve is communicated with the outside. The third end of the three-way solenoid valve is communicated with the second analysis chamber. An SF6 infrared sensor is arranged in the second analysis chamber. The second analysis chamber is communicated with the outside through an exhaust pipe. An electric control valve is arranged on the exhaust pipe. The humidity sensor, the pump body, the three-way solenoid valve, the SF6 infrared sensor and the electric control valve are electrically connected to the controller.

[0006] In one or more embodiments, a first ventilation opening, a second ventilation opening and a third ventilation opening are arranged at the top of the body. The first analysis chamber is connected to the first ventilation opening to communicate with the outside. The second end of the three-way solenoid valve is connected to the second ventilation opening to communicate with the outside. The exhaust pipe is connected to the third ventilation opening to communicate with the outside.

[0007] In one or more embodiments, an oxygen sensor is provided in the first analysis chamber or the second analysis chamber.

[0008] In one or more embodiments, a storage battery is provided in the body, the storage battery is electrically connected to the controller, and a charging socket is provided on the side wall of the body.

[0009] In one or more embodiments, a power supply port or a power cord is provided on the side wall of the body.

[0010] In one or more embodiments, the electric control valve is a one-way solenoid valve.

[0011] In one or more embodiments, connecting ears are provided on both sides of the body, and mounting holes are provided on the connecting ears.

[0012] The beneficial effects of this solution compared with the prior art: The humidity sensor in the first analysis chamber first detects the air humidity to determine whether it is in a high-humidity environment. If it is not in a high-humidity environment, the gas will only flow to the second analysis chamber for SF6 concentration detection, so as to protect the SF6 infrared sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the sensing device of this embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.

[0015] Please refer to the attached Figure 1, the present utility model provides an integrated SF6 gas on-line sensing device based on the Internet of Things, which includes a body 1. Inside the body, there are a first analysis chamber 2, a second analysis chamber 3, a controller 4 and a pump body 5. The controller has a wireless communication module. Inside the first analysis chamber 2, there is a humidity sensor 6. The first analysis chamber is communicated with the outside. The input end of the pump body 5 is communicated with the first analysis chamber 2. The output end of the pump body is connected to the first end of a three-way solenoid valve 7. The second end of the three-way solenoid valve is communicated with the outside. The third end of the three-way solenoid valve is communicated with the second analysis chamber 3. Inside the second analysis chamber, there is an SF6 infrared sensor 8. The second analysis chamber is communicated with the outside through an exhaust pipe 9. An electric control valve 10 is arranged on the exhaust pipe. The humidity sensor, the pump body, the three-way solenoid valve, the SF6 infrared sensor and the electric control valve are electrically connected to the controller. During operation, the pump body pumps outside air into the first analysis chamber. The humidity in the air is detected by the humidity sensor. The controller compares the pre-set humidity value with the humidity value detected by the humidity sensor. When the humidity value in the air is less than the set humidity value, the three-way solenoid valve connects the pump body and the second analysis chamber, and inputs outside air into the second analysis chamber. The SF6 concentration in the air is detected by the SF6 infrared sensor.

[0016] On the top of the body, there are a first ventilation port 11, a second ventilation port 12 and a third ventilation port 13. The first analysis chamber 2 is connected to the first ventilation port to communicate with the outside. The second end of the three-way solenoid valve 7 is connected to the second ventilation port to communicate with the outside. The exhaust pipe 9 is connected to the third ventilation port to communicate with the outside. Grid structures are arranged on the first ventilation port, the second ventilation port and the third ventilation port to prevent larger foreign objects from entering.

[0017] An oxygen sensor 14 is arranged in the first analysis chamber 2 or the second analysis chamber 3. The oxygen sensor can detect the oxygen concentration in the air, so as to judge whether the oxygen in the current ambient air is sufficient.

[0018] A storage battery 15 is arranged inside the body 1. The storage battery is electrically connected to the controller. A charging socket is arranged on the side wall of the body. The operation of the sensing device is maintained by the storage battery; or a power supply port or a power cord is arranged on the side wall of the body 1 to connect to the commercial power for use.

[0019] The electric control valve 10 is a one-way solenoid valve, which can prevent air from flowing back into the second analysis chamber and has a protective effect on the SF6 infrared sensor.

[0020] On both sides of the body 1, there are connecting ears 16. Mounting holes are arranged on the connecting ears. The body is mounted at an appropriate position through fixing screws.

[0021] The above is the preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiment. Any equivalent modification or change made by those of ordinary skill in the art according to the disclosure of the present utility model shall be included in the protection scope recorded in the claims.

Claims

1. An integrated SF6 gas online sensing device based on the Internet of Things, characterized in that: The invention comprises a body (1), wherein a first analysis chamber (2), a second analysis chamber (3), a controller (4) and a pump body (5) are arranged in the body, wherein the controller has a wireless communication module, wherein a humidity sensor (6) is arranged in the first analysis chamber (2), wherein the first analysis chamber is connected to the outside, wherein an input end of the pump body (5) is connected to the first analysis chamber (2), wherein an output end of the pump body is connected to a first end of a three-way solenoid valve (7), wherein a second end of the three-way solenoid valve is connected to the outside, wherein a third end of the three-way solenoid valve is connected to the second analysis chamber (3), wherein an SF6 infrared sensor (8) is arranged in the second analysis chamber, wherein the second analysis chamber is connected to the outside through an exhaust pipe (9), wherein an electric control valve (10) is arranged on the exhaust pipe, wherein the humidity sensor, the pump body, the three-way solenoid valve, the SF6 infrared sensor, the electric control valve and the controller are electrically connected.

2. According to claim 1, an integrated SF6 gas online sensing device based on the Internet of Things is characterized in that: The top of the machine body is provided with a first vent (11), a second vent (12) and a third vent (13); the first analysis chamber (2) is connected to the first vent to achieve communication with the outside world; the second end of the three-way solenoid valve (7) is connected to the second vent to achieve communication with the outside world; and the exhaust pipe (9) is connected to the third vent to achieve communication with the outside world.

3. The integrated SF6 gas online sensing device based on the Internet of Things according to claim 1 is characterized in that: An oxygen sensor (14) is provided in the first analysis chamber (2) or the second analysis chamber (3).

4. The integrated SF6 gas online sensing device based on the Internet of Things according to claim 1 is characterized in that: A storage battery (15) is arranged in the machine body (1), the storage battery is electrically connected to the controller, and a charging socket is arranged on the side wall of the machine body.

5. The integrated SF6 gas online sensing device based on the Internet of Things according to claim 1 is characterized in that: The side wall of the machine body (1) is provided with a power port or a power cord.

6. The integrated SF6 gas online sensing device based on the Internet of Things according to claim 1 is characterized in that: The electrically controlled valve (10) is a one-way solenoid valve.

7. An integrated SF6 gas online sensing device based on the Internet of Things according to any one of claims 1 to 6, characterized in that: Connecting ears (16) are provided on both sides of the machine body (1), and mounting holes are provided on the connecting ears.

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