CN208568721U - A kind of portable sulfur hexafluoride trace gas detection device - Google Patents
A kind of portable sulfur hexafluoride trace gas detection device Download PDFInfo
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- CN208568721U CN208568721U CN201821146363.6U CN201821146363U CN208568721U CN 208568721 U CN208568721 U CN 208568721U CN 201821146363 U CN201821146363 U CN 201821146363U CN 208568721 U CN208568721 U CN 208568721U
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Abstract
The utility model relates to gas detection technology fields, and in particular to a kind of portable sulfur hexafluoride trace gas detection device.A kind of portable sulfur hexafluoride detection device, including shell, sampling unit, sensor unit, signal processing unit and signal output unit, sampling unit is set to the side of outer shell outer wall comprising probe, gas collecting access, compensation gas access, carrier gas access and flow controller；One end connection of gas collecting access takes gas probe, and the other end connects the sensor unit, and filter is equipped on gas collecting access；The input terminal of sensor is connect with the output end of the sampling unit, and the output end of the sensor is connected with the signal processing unit, signal processing unit and state between signal output unit by signal wire connect.The utility model realization detects sulfur hexafluoride in time and keeps detection sensitivity not less than 0.01ppm, lightly portable to be used for quickly detecting at the scene.
Description
Technical field
The utility model relates to gas detection technology fields, and in particular to a kind of portable sulfur hexafluoride search gas
Detection device.
Background technique
Sulfur hexafluoride is colourless, tasteless, nontoxic, non-corrosive gas at normal temperatures and pressures, has brilliant electrical isolation
Property and arc extinction performance, in electric system and electrical equipment, it is extensive as a kind of gas-insulated medium of high electric strength
For high-tension switch gear.
In high-voltage switch gear operation, the leakage of sulfur hexafluoride gas is inevitable, when there is high-current on-off, due to strong
Arc discharge can generate the subfluoride of some sulfur-bearings in leak scene.These substance reaction abilities are stronger, when having water and oxygen
When can further be reacted with electrode material, hydrone again, generate toxic or hypertoxic gas to decompose.These toxic gases are main
Insulting respiratory system will appear after poisoning and be similar to the adverse reactions such as flu, skin allergy, nausea and vomiting, fatigue, inhale
Enter dosage it is big when, it may appear that more serious consequence.
In addition, content is few in nature, thermal stability is good for sulfur hexafluoride, chemical inertness is strong, not soluble in water, convenient for inspection
It surveys and detection sensitivity is high, therefore be often widely used in vent cabinet, buffer unit as search gas, the industries such as mine are let out
Leak detection.
Currently, the portable usual accuracy and sensitivity of sulfur hexafluoride leak detector is not high, minimum detection limit is higher, Bu Nengman
Foot is as high-precision and sensitivity required by SF6 trace gas leak detection instrument；And high-precision and sensitivity, minimum detection limit are low
Often volume and weight is big (such as gas chromatograph) for equipment, and portability is poor, can not apply and do real-time detection and analysis on site.
Utility model content
The purpose of the utility model is to provide a kind of portable sulfur hexafluoride trace gas detection devices, solve
The above technical problem.
The technical issues of the utility model is solved can be realized using following technical scheme:
A kind of portable sulfur hexafluoride trace gas detection device, including shell, sampling unit, sensor unit,
Signal processing unit and signal output unit, wherein the sampling unit is set to the side of the outer shell outer wall comprising takes
Gas probe, gas collecting access, compensation gas access, carrier gas access and flow controller；
Gas probe is taken described in one end connection of the compensation gas access, the other end connects the gas collecting access, institute
The outlet side for stating carrier gas access is connect with the gas collecting access, the flow controller be set to the gas collecting access or
On the compensation gas access；
One end connection of the gas collecting access takes gas probe, and the other end connects the sensor unit, in the gas
Body acquires access and is equipped with filter, is filtered to impurity in gas collecting access；The compensation gas access is for protecting
The flow for holding the gas collecting access is constant；
The input terminal of the sensor unit is connect with the output end of the sampling unit, the output of the sensor unit
End is connected with the signal processing unit, is connected between the signal processing unit and the signal output unit by signal wire
It connects.
Sampling unit is filtered to the sulfur hexafluoride gas of acquisition and flow control, increases to sulfur hexafluoride detection
Stability and sensitivity.
It in gas collecting access and takes equipped with sintering device between gas probe, the sintering device is used to protect at toroidal
Hold the gas flow rate constant in gas collecting access.
It is described sintering device far from the probe one end be equipped with gas reaction chamber, the gas reaction it is intracavitary be equipped with and six
The Ni of sulfur fluoride gas reaction63Thin slice.
The flow controller includes the first control valve, the second control valve and Miniature diaphragm pump, and first control valve is set
In on the gas collecting access, second control valve is set on the compensation gas access, first control valve or institute
The output end for stating the second control valve is connect with the Miniature diaphragm pump.
Starting Miniature diaphragm pump is evacuated gas collecting access and compensation gas access, by changing the first control valve
The pressure for making sintering device be located at reaction chamber one end with the aperture of the second control valve is constant.
The sensor unit uses ECD sensor.
The shell is equipped with concentration of sulfur hexafluoride indicator light, and the lower end of the shell is equipped with handle, the handle and institute
The junction for stating shell is equipped with control switch.
Described take is equipped with nozzle between gas probe and the sintering device, described that gas probe and the nozzle is taken to pass through sealing ring
It is fixedly connected.
The utility model has the advantages that due to the adoption of the above technical scheme, the utility model may be implemented to detect simultaneously sulfur hexafluoride in time
And detection sensitivity is kept to be not less than 0.01ppm, it is lightly portable to be used for quickly detecting at the scene.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the schematic diagram of internal structure of the utility model；
In figure:
1, gas probe is taken, 2, nozzle, 3, shell, 4, handle, 5, signal wire, 6, sintering device,
7, ECD sensor, the 8, first control valve, 9, concentration indicator light, 10, signal processor,
11, the second control valve, 12, filter, 13, control switch, 14, sealing ring.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
Face, which combines to be specifically illustrating, is further described the utility model.
Referring to Fig.1, Fig. 2, a kind of portable sulfur hexafluoride trace gas detection device, including shell 3, sampling list
Member, sensor unit, signal processing unit 10 and electric signal output unit, signal processing unit are electric signal amplifier, are used for
By SF6And Ni63The negative electricity value of reaction amplifies, wherein sampling unit is set to the side of 3 outer wall of shell comprising gas is taken to visit
Needle 1, gas collecting access, compensation gas access, carrier gas access and flow controller；One end connection of compensation gas access takes gas
Probe 1, the other end connect gas collecting access, and the outlet side of carrier gas access is connect with the gas collecting access, flow control
Device is set on gas collecting access or compensation gas access.
One end connection of gas collecting access takes gas probe 1, and the other end connects the sensor unit, logical in gas collecting
Road is equipped with filter 12, is filtered to impurity in gas collecting access；Compensation gas access is for keeping the gas
The flow for acquiring access is constant；The input terminal of sensor unit and the output end of sampling unit connect, the output of sensor unit
End is connected with signal processing unit 10, is connected between signal processing unit 10 and signal output unit by signal wire 5.
Sampling unit is filtered to the sulfur hexafluoride gas of acquisition and flow control, increases to sulfur hexafluoride detection
Stability and sensitivity.
It in gas collecting access and takes between gas probe 1 equipped with sintering device 6, is sintered device 6 into toroidal, loudspeaker nozzle one end
Towards taking gas probe 1, the other end is towards reaction chamber.Sintering device 6 is used to keep the gas flow rate constant in gas collecting access.?
Gas reaction is intracavitary equipped with the Ni reacted with sulfur hexafluoride gas63Thin slice.
Flow controller includes the first control valve 8, the second control valve 11 and Miniature diaphragm pump, and the first control valve 8 is set to gas
Body acquires on access, and the second control valve 11 is set on compensation gas access, the output end of the first control valve 8 or the second control valve 11
It is connect with Miniature diaphragm pump.
Starting Miniature diaphragm pump is evacuated gas collecting access and compensation gas access, by changing the first control valve
The pressure for making sintering device be located at reaction chamber one end with the aperture of the second control valve is constant.
Wherein, sensor unit uses ECD sensor 7.The concentration indicator light 9 of sulfur hexafluoride is equipped on shell 3, outside
The lower end of shell 3 is equipped with handle 4, is equipped with control switch 13 in the junction of handle 4 and shell 3.Taking gas probe 1 and sintering device 6
Between be equipped with nozzle 2, take gas probe and nozzle 2 to pass through sealing ring 14 and be fixedly connected.
In use, gas probe and the device of the sulfur hexafluoride of being carried out detection will be taken to be attached, sulfur hexafluoride gas is extracted
Body, sulfur hexafluoride gas has respectively entered gas collecting access and compensation gas access after nozzle 2, wherein entering gas
Sulfur hexafluoride gas in acquisition access enters the Ni in reaction chamber with setting in the reactor chamber after oversintering device 663Thin slice
It is reacted.Enter the sulfur hexafluoride gas in gas compensation access to acquisition access in sulfur hexafluoride gas pressure into
Row compensation, and be evacuated by Miniature diaphragm pump, the aperture for controlling the first control valve and the second control valve makes in sintering device entrance
The flow control of the sulfur hexafluoride at place is 60ml/min.Opening carrier gas valve is argon gas by carrier gas access and through Ni63Converge,
Sulfur hexafluoride gas to be detected enters ECD sensor surface under the drive of carrier gas, by the result of ECD sensor check
Pass through data line again at electric signal through signal processing unit processes and be transferred to signal output unit, finally arrives data processing terminal
The display of result is carried out on display.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (7)
1. a kind of portable sulfur hexafluoride trace gas detection device, including shell, sampling unit, sensor unit, letter
Number processing unit and signal output unit, which is characterized in that the sampling unit is set to the side of the outer shell outer wall comprising
Take gas probe, gas collecting access, compensation gas access, carrier gas access and stream for keeping gas collecting Access flow constant
Amount controller；Gas probe is taken described in one end connection of the compensation gas access, the other end connects the gas collecting access, institute
The outlet side for stating carrier gas access is connect with the gas collecting access, the flow controller be set to the gas collecting access or
On the compensation gas access；
One end connection of the gas collecting access takes gas probe, and the other end connects the sensor unit, adopts in the gas
Collect access and is equipped with filter；
The input terminal of the sensor unit is connect with the output end of the sampling unit, the output end of the sensor unit with
The signal processing unit is connected, and is connected between the signal processing unit and the signal output unit by signal wire.
2. a kind of portable sulfur hexafluoride trace gas detection device according to claim 1, which is characterized in that institute
It states gas collecting access and described take is equipped with sintering device between gas probe, the sintering device is at toroidal.
3. a kind of portable sulfur hexafluoride trace gas detection device according to claim 2, which is characterized in that institute
It states sintering device and is equipped with gas reaction chamber far from one end of the probe, be equipped with and sulfur hexafluoride gas the gas reaction is intracavitary
The Ni of reaction63Thin slice.
4. a kind of portable sulfur hexafluoride trace gas detection device according to claim 1, which is characterized in that institute
Stating flow controller includes the first control valve, the second control valve and Miniature diaphragm pump, and first control valve is set to the gas
It acquires on access, second control valve is set on the compensation gas access, first control valve or second control
The output end of valve is connect with the Miniature diaphragm pump.
5. a kind of portable sulfur hexafluoride trace gas detection device according to claim 1, which is characterized in that institute
Sensor unit is stated using ECD sensor.
6. a kind of portable sulfur hexafluoride trace gas detection device according to claim 1, which is characterized in that institute
Shell is stated equipped with concentration of sulfur hexafluoride indicator light, the lower end of the shell is equipped with handle, the company of the handle and the shell
It meets place and is equipped with control switch.
7. a kind of portable sulfur hexafluoride trace gas detection device according to claim 2, which is characterized in that institute
It states to take and is equipped with nozzle between gas probe and the sintering device, it is described that gas probe is taken to be fixedly connected with the nozzle by sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821146363.6U CN208568721U (en) | 2018-07-19 | 2018-07-19 | A kind of portable sulfur hexafluoride trace gas detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821146363.6U CN208568721U (en) | 2018-07-19 | 2018-07-19 | A kind of portable sulfur hexafluoride trace gas detection device |
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| Publication Number | Publication Date |
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| CN208568721U true CN208568721U (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821146363.6U Active CN208568721U (en) | 2018-07-19 | 2018-07-19 | A kind of portable sulfur hexafluoride trace gas detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397840A (en) * | 2020-04-17 | 2020-07-10 | 朗思科技有限公司 | Indoor ventilation frequency rapid detection device based on sulfur hexafluoride tracer gas |
-
2018
- 2018-07-19 CN CN201821146363.6U patent/CN208568721U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397840A (en) * | 2020-04-17 | 2020-07-10 | 朗思科技有限公司 | Indoor ventilation frequency rapid detection device based on sulfur hexafluoride tracer gas |
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