CN210154981U - Little water density detection device based on gas exchange - Google Patents
Little water density detection device based on gas exchange Download PDFInfo
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- CN210154981U CN210154981U CN201920941254.1U CN201920941254U CN210154981U CN 210154981 U CN210154981 U CN 210154981U CN 201920941254 U CN201920941254 U CN 201920941254U CN 210154981 U CN210154981 U CN 210154981U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 230000001702 transmitter Effects 0.000 abstract description 21
- 238000010586 diagram Methods 0.000 description 7
- 230000001502 supplementation Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 101710003701 CSTF77 Proteins 0.000 description 1
- LSJNBGSOIVSBBR-UHFFFAOYSA-N Thionyl fluoride Chemical compound FS(F)=O LSJNBGSOIVSBBR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003203 everyday Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
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Abstract
The utility model relates to a micro water density detection device based on gas exchange, which comprises a gas exchange module, a temperature acquisition module, a humidity acquisition module, a gas pressure acquisition module and a main control chip; the gas exchange module comprises a gas exchange device and a control circuit, the control circuit comprises a triode, the base electrode of the triode is connected with the main control chip, the emitting electrode of the triode is connected with the gas exchange device, and the drain electrode of the triode is grounded; the temperature acquisition module comprises a thermistor, and the thermistor is connected to the main control chip; the humidity acquisition module comprises a humidity-sensitive sensor, the humidity-sensitive sensor and a digital conversion chip, and the humidity-sensitive sensor is connected to the main control chip through the digital conversion chip; the gas pressure acquisition module comprises a gas pressure sensor, and the gas pressure sensor is connected to the main control chip. The gas exchange between the gas chamber of the transmitter and the gas in the tank body is accelerated through the gas exchange device, and the micro-water density of the SF6 gas in the tank body can be measured quickly and accurately.
Description
Technical Field
The utility model relates to a little water density detects technical field, in particular to little water density detection device based on gas exchange.
Background
SF6 gas is widely used in electrical equipment because of its good insulating and arc extinguishing properties. The density of gas is monitored cyclically every day, the density and the water content of SF6 gas must be monitored regularly before the equipment is put into operation and in operation, the moisture content of SF6 gas is overproof and brings great harm, under the participation of some metal objects, SF6 gas can be hydrolyzed with water at the temperature of over 200 ℃ to generate HF and SOF2, an insulating part and a metal part are corroded, the insulating strength of the equipment is reduced, a large amount of heat is generated, the pressure in a gas chamber is increased, the withstand voltage strength and the breaking capacity of the breaker are reduced, and the explosion of the breaker can be caused under severe conditions. The SF6 micro-water density on-line monitoring system is suitable for SF6 state monitoring of SF6 circuit breakers of various voltage grades and SF6 combined electrical appliances (GIS), and measures the micro-water, density and temperature of SF6 gas in an electric closed container under the condition of not discharging SF6 gas. The SF6 micro-water density on-line monitoring system is generally arranged at the position of an air supplementing port of equipment or a gas tank. On one hand, the air supplementing port and the air port of the tank body are smaller, so that the passage of the transmitter air chamber and the gas in the tank is narrow, and on the other hand, the SF6 gas is 5 times of the air density, so that the integral mobility in the tank body is poor. After the equipment runs for a period of time, the gas in the gas chamber of the transmitter of the SF6 micro water density online monitoring system cannot be effectively and quickly exchanged with the gas in the tank body, a long time is needed, the gas in the tank is consistent with the gas state in the transmitter in a free gas diffusion mode, and the actual state of SF6 micro water, density and temperature in the tank body is difficult to measure timely and accurately.
SUMMERY OF THE UTILITY MODEL
Therefore, a micro water density detection device based on gas exchange needs to be provided, and the problem that the micro water density of SF6 gas in a tank body is difficult to measure timely and accurately due to the fact that gas in a gas chamber of a transmitter and gas in the tank body cannot be exchanged effectively and quickly is solved.
In order to achieve the above object, the inventor provides a gas exchange-based micro water density detection device, which comprises a gas exchange module, a temperature acquisition module, a humidity acquisition module, a gas pressure acquisition module and a main control chip;
the gas exchange module comprises a gas exchange device and a control circuit, the control circuit comprises a triode, the base electrode of the triode is connected with the main control chip, the collector electrode of the triode is connected with the gas exchange device, and the emitter electrode of the triode is grounded;
the temperature acquisition module comprises a thermistor, and the thermistor is connected to the main control chip;
the humidity acquisition module comprises a humidity-sensitive sensor, the humidity-sensitive sensor and a digital conversion chip, and the humidity-sensitive sensor is connected to the main control chip through the digital conversion chip;
the gas pressure acquisition module comprises a gas pressure sensor, and the gas pressure sensor is connected to the main control chip.
Further preferably, the gas exchange device is an ultrasonic generator.
Preferably, the gas exchange device is an infrared emitter.
Further preferably, the gas exchange device comprises an ultrasonic generator and an infrared emitter.
Further optimized, the thermistor is tightly attached to the humidity sensor.
Different from the prior art, above-mentioned technical scheme accelerates the gas chamber of changer and the gaseous exchange of jar internal gas through gas exchange device through installing gas exchange device additional in the gas chamber of changer, makes the gaseous state unanimous with jar internal gas state in the changer for can measure the gaseous little water density and the temperature of jar internal SF6 fast and accurately.
Drawings
FIG. 1 is a schematic diagram of a gas exchange-based micro water density detection device according to an embodiment;
FIG. 2 is a schematic circuit diagram of the main control chip according to an embodiment;
FIG. 3 is a schematic diagram of an embodiment of a temperature acquisition module;
FIG. 4 is a schematic diagram of an embodiment of a humidity acquisition module;
FIG. 5 is a schematic diagram of an electrical circuit of the gas pressure acquisition module according to one embodiment;
FIG. 6 is a schematic diagram of an electrical circuit of the gas exchange module according to an embodiment;
fig. 7 is another schematic circuit diagram of a gas exchange module according to an embodiment.
Description of reference numerals:
110. a main control chip, a control chip and a display chip,
120. a gas exchange module is arranged on the base plate,
130. a temperature acquisition module for acquiring the temperature of the sample,
140. a humidity acquisition module,
150. and a gas pressure acquisition module.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1-5, the present embodiment provides a gas exchange-based micro water density detection apparatus, which includes a gas exchange module 120, a temperature acquisition module 130, a humidity acquisition module 140, a gas pressure acquisition module 150, and a main control chip 110;
the gas exchange module 120 comprises a gas exchange device and a control circuit, wherein the control circuit comprises a triode, the base of the triode is connected to the main control chip 110, the collector of the triode is connected to the gas exchange device, and the emitter of the triode is grounded;
the temperature acquisition module 130 comprises a thermistor, and the thermistor is connected to the main control chip 110; wherein the thermistor is a PT100 type thermistor.
The humidity acquisition module 140 comprises a humidity sensor, a humidity sensor and a digital conversion chip, wherein the humidity sensor is connected to the main control chip 110 through the digital conversion chip; wherein the humidity-sensitive sensor adopts a humidity-sensitive sensor with HCH-1000-001 model.
The gas pressure collecting module 150 includes a gas pressure sensor connected to the main control chip 110. The gas pressure sensor adopts a WPSH04 model gas pressure sensor.
By arranging the gas exchange device in the gas chamber of the transmitter, when the micro water density and temperature of the SF6 gas in the tank body need to be detected, the main control chip 110 controls the gas exchange device to work through the control circuit, the gas in the gas chamber of the transmitter is exchanged with the gas in the tank body through the gas exchange device, so that the state of the gas in the gas chamber of the transmitter is consistent with that of the gas in the tank body, then the temperature of the gas in the gas chamber is detected through the thermistor, the humidity in the gas chamber is measured through the humidity-sensitive sensor, the gas pressure in the gas chamber is measured through the gas pressure sensor, the micro water volume ratio content in the gas chamber can be obtained through conversion of the measured temperature, humidity and gas pressure, and the micro water density of the SF6 gas in the tank body can be measured quickly and accurately.
Referring to fig. 6-7, the gas exchange device can be an ultrasonic generator, an infrared emitter, or both an ultrasonic generator and an infrared emitter. The ultrasonic generator can be NU200E18TR-1 type ultrasonic generator; the infrared emitter may be an SFH480 model infrared emitter.
When the gas exchange device adopts an ultrasonic generator, the main control chip 110 exchanges the gas in the transmitter gas chamber with the gas in the tank body by controlling the ultrasonic generator, the ultrasonic generator generates ultrasonic waves, and the gas in the transmitter gas chamber and the gas at the position of the gas supplementing port vibrate through the energy transmitted by the ultrasonic waves, so that the flow of the gas in the transmitter gas chamber and the gas in the tank body is accelerated, and the states of the gas in the transmitter and the gas in the tank body are kept consistent. And then the micro-water density of the SF6 gas in the tank body can be rapidly and accurately measured. When the gas exchange device adopts an infrared emitter, the main control chip 110 controls the infrared emitter to exchange gas in the transmitter gas chamber with gas in the tank body, the infrared emitter emits infrared rays, SF6 gas has strong absorption characteristics to the infrared rays, SF6 gas in the transmitter gas chamber is heated by the infrared rays for a period of time, such as 2 minutes, so that the temperature of the gas in the transmitter gas chamber is increased, the gas is heated and expanded, the gas pressure is increased, part of the gas in the transmitter gas chamber is exhausted to the tank body through the gas supplementing port, then the infrared emitter is controlled to stop working, SF6 gas in the transmitter gas chamber is naturally cooled, the gas pressure is reduced, the SF6 gas in the tank body is sucked into the transmitter gas chamber through the gas supplementing port, thereby the exchange between the gas in the transmitter gas chamber and the gas in the tank body is accelerated, and the gas in the transmitter gas chamber is consistent with the gas in the tank body, and then the micro-water density of the SF6 gas in the tank body can be rapidly and accurately measured. In order to further accelerate the flow of the gas in the gas chamber of the transmitter and the gas in the tank body, the gas exchange device adopts an ultrasonic generator and an infrared emitter at the same time.
In this embodiment, the thermistor is in close proximity to the moisture sensor. When the zero point correction of the humidity-sensitive sensor is carried out, the thermistor is clung to the humidity-sensitive sensor for heating, then after the heating is finished, the thermistor is used for measuring the temperature change of the humidity-sensitive sensor in the cooling process, and the humidity-sensitive sensor is used for detecting the corresponding humidity value, so that the zero point correction function of the humidity-sensitive sensor is realized.
It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.
Claims (5)
1. A micro water density detection device based on gas exchange is characterized by comprising a gas exchange module, a temperature acquisition module, a humidity acquisition module, a gas pressure acquisition module and a main control chip;
the gas exchange module comprises a gas exchange device and a control circuit, the control circuit comprises a triode, the base electrode of the triode is connected with the main control chip, the collector electrode of the triode is connected with the gas exchange device, and the emitter electrode of the triode is grounded;
the temperature acquisition module comprises a thermistor, and the thermistor is connected to the main control chip;
the humidity acquisition module comprises a humidity-sensitive sensor, the humidity-sensitive sensor and a digital conversion chip, and the humidity-sensitive sensor is connected to the main control chip through the digital conversion chip;
the gas pressure acquisition module comprises a gas pressure sensor, and the gas pressure sensor is connected to the main control chip.
2. The gas exchange-based micro-water density detection device of claim 1, wherein the gas exchange device is an ultrasonic generator.
3. The gas exchange-based micro-water density detection device of claim 1, wherein the gas exchange device is an infrared emitter.
4. The gas exchange-based micro-water density detection device according to claim 1, wherein the gas exchange device comprises an ultrasonic generator and an infrared emitter.
5. The gas exchange-based micro water density detection device according to claim 1, wherein the thermistor is closely attached to the humidity sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920941254.1U CN210154981U (en) | 2019-06-21 | 2019-06-21 | Little water density detection device based on gas exchange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920941254.1U CN210154981U (en) | 2019-06-21 | 2019-06-21 | Little water density detection device based on gas exchange |
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| Publication Number | Publication Date |
|---|---|
| CN210154981U true CN210154981U (en) | 2020-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920941254.1U Active CN210154981U (en) | 2019-06-21 | 2019-06-21 | Little water density detection device based on gas exchange |
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| Country | Link |
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| CN (1) | CN210154981U (en) |
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2019
- 2019-06-21 CN CN201920941254.1U patent/CN210154981U/en active Active
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