CN203949894U - A kind of SF 6micro-water gaging instrument - Google Patents
A kind of SF 6micro-water gaging instrument Download PDFInfo
- Publication number
- CN203949894U CN203949894U CN201420153665.1U CN201420153665U CN203949894U CN 203949894 U CN203949894 U CN 203949894U CN 201420153665 U CN201420153665 U CN 201420153665U CN 203949894 U CN203949894 U CN 203949894U
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- China
- Prior art keywords
- electrically connected
- output terminal
- micro
- water gaging
- cpu
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The utility model discloses a kind of SF
6micro-water gaging instrument, comprises Industrial Frequency Transformer; Described Industrial Frequency Transformer input end access civil power; Its output terminal is serially connected with fuse; The output terminal of described fuse also and be connected to holding circuit; The output terminal of described holding circuit is electrically connected with charge-discharge circuit; Described charge-discharge circuit is electrically connected with CPU; Described CPU is also electrically connected with liquid crystal display, keyboard and flow regulation needle valve; The input end of described flow regulation needle valve is connected with sampler chamber; The output terminal of described sampler chamber is electrically connected with voltage amplifier; The output terminal of described voltage amplifier is electrically connected with AD converter; Described AD converter is electrically connected to CPU by buffer circuit.SF of the present utility model
6micro-water gaging instrument, adopts the integral body of computing machine to control, and automaticity is high, has automatic inflatable Electricity Functional; Highly sensitive, good stability, reproducible.
Description
Technical field
The utility model relates to a kind of SF
6micro-water gaging instrument, belongs to tester technical field.
Background technology
SF
6the higher meeting of humidity in gas affect SF
6the insulation of gas itself, can make solid insulation surface condensation and greatly reduce edge flashing voltage in isolating switch, participate in SF under arcing
6the decomposition reaction of gas, generates hydrogen fluoride that corrosivity is very strong, fluoridizes the analytes such as sulfurous phthalein, and very large to the harm of human body, the parts of corrosion switch, reduce the insulation resistance of insulating part and destroy metal; Thereby strict control newly installed SF in sulphur hexafloride circuit breaker
6the humidity of gas, searches its abnormal reason, takes effective measures, and is to guarantee sulphur hexafloride circuit breaker safe and reliable operation and a healthy important means of related personnel.Adopt at present dew point method to SF
6gas humidity is tested, the environment temperature of this measuring method and on-the-spot test and test pressure have very large relation, in operating process, easily by instrument direct-reading data, as the actual value of reflection equipment under test, cause testing result wrong blindly, cannot accurately understand SF
6the real humidity of gas; Therefore for addressing the above problem, urgently research and develop a new SF
6micro-water gaging instrument.
Summary of the invention
(1) technical matters that will solve
In order to address the above problem, the utility model proposes that a kind of automaticity is high, fast response time and reproducible SF
6micro-water gaging instrument.
(2) technical scheme
SF of the present utility model
6micro-water gaging instrument, comprises Industrial Frequency Transformer; Described Industrial Frequency Transformer input end access civil power; Its output terminal is serially connected with fuse; The output terminal of described fuse also and be connected to holding circuit; The output terminal of described holding circuit is electrically connected with charge-discharge circuit; Described charge-discharge circuit is electrically connected with CPU; Described CPU is also electrically connected with liquid crystal display, keyboard and flow regulation needle valve, and in measuring process, flow regulation needle valve is slowly opened, and prevents that pressure jump from causing the damage of sensor; The input end of described flow regulation needle valve is connected with sampler chamber, adopt the micro-moisture in tested gas in chamber to enter sensor sample chamber, water vapour is adsorbed in the micropore of sensor, its capacitive reactance is changed, and sensor is to amplify to convert normal linearity electric signal to by this variation; The output terminal of described sampler chamber is electrically connected with voltage amplifier, and voltage amplifier amplifies again for sensor is amplified to the normal linearity electric signal converting to; The output terminal of described voltage amplifier is electrically connected with AD converter; Described AD converter is electrically connected to CPU by buffer circuit.
Further, electron mass flow is installed in described sampler chamber and takes into account pressure transducer; Described electron mass flowmeter is comprised of humidity sensor and amplifying circuit; Described humidity sensor is provided with sampling probe.
Again further, described sampling probe adopts stainless steel sintering filter screen structure.
Further, the interface of described CPU is USB1.1 standard.
Further, described charge-discharge circuit can automatically switch.
Further, described AD converter consists of two groups of AD chip built-up circuits.
(3) beneficial effect
Compared with prior art, it has following beneficial effect to the utility model: SF of the present utility model
6micro-water gaging instrument, adopts the integral body of computing machine to control, and automaticity is high, has automatic inflatable Electricity Functional; Highly sensitive, good stability, reproducible.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present utility model.
Embodiment
SF of the present utility model
6micro-water gaging instrument, comprises Industrial Frequency Transformer; Described Industrial Frequency Transformer input end access civil power; Its output terminal is serially connected with fuse; The output terminal of described fuse also and be connected to holding circuit; The output terminal of described holding circuit is electrically connected with charge-discharge circuit, and charge-discharge circuit, in the instrument course of work, when battery capacity indication is not enough, charges, and rear charging indicator light automatic distinguishing has charged; Described charge-discharge circuit is electrically connected with CPU; Described CPU is also electrically connected with liquid crystal display, keyboard and flow regulation needle valve, and in measuring process, flow regulation needle valve is slowly opened, and prevents that pressure jump from causing the damage of sensor; The input end of described flow regulation needle valve is connected with sampler chamber, adopt the micro-moisture in tested gas in chamber to enter sensor sample chamber, water vapour is adsorbed in the micropore of sensor, its capacitive reactance is changed, and sensor is to amplify to convert normal linearity electric signal to by this variation; The output terminal of described sampler chamber is electrically connected with voltage amplifier, and voltage amplifier amplifies again for sensor is amplified to the normal linearity electric signal converting to; The output terminal of described voltage amplifier is electrically connected with AD converter; Described AD converter is electrically connected to CPU by buffer circuit.
Electron mass flow is installed in described sampler chamber and takes into account pressure transducer; Described electron mass flowmeter is comprised of humidity sensor and amplifying circuit; Described humidity sensor is provided with sampling probe; Described sampling probe adopts stainless steel sintering filter screen structure; The interface of described CPU is USB1.1 standard; Described charge-discharge circuit can automatically switch; Described AD converter consists of two groups of AD chip built-up circuits.
Embodiment recited above is described preferred implementation of the present utility model, not design of the present utility model and scope is limited.Do not departing under the prerequisite of the utility model design concept; various modification and improvement that this area ordinary person makes the technical solution of the utility model; all should drop into protection domain of the present utility model; the technology contents that the utility model is asked for protection, is all documented in claims.
Claims (6)
1. a SF
6micro-water gaging instrument, is characterized in that: comprise Industrial Frequency Transformer; Described Industrial Frequency Transformer input end access civil power; Its output terminal is serially connected with fuse; The output terminal of described fuse also and be connected to holding circuit; The output terminal of described holding circuit is electrically connected with charge-discharge circuit; Described charge-discharge circuit is electrically connected with CPU; Described CPU is also electrically connected with liquid crystal display, keyboard and flow regulation needle valve; The input end of described flow regulation needle valve is connected with sampler chamber; The output terminal of described sampler chamber is electrically connected with voltage amplifier; The output terminal of described voltage amplifier is electrically connected with AD converter; Described AD converter is electrically connected to CPU by buffer circuit.
2. SF according to claim 1
6micro-water gaging instrument, is characterized in that: electron mass flow is installed in described sampler chamber and takes into account pressure transducer; Described electron mass flowmeter is comprised of humidity sensor and amplifying circuit; Described humidity sensor is provided with sampling probe.
3. SF according to claim 2
6micro-water gaging instrument, is characterized in that: described sampling probe adopts stainless steel sintering filter screen structure.
4. SF according to claim 1
6micro-water gaging instrument, is characterized in that: the interface of described CPU is USB1.1 standard.
5. SF according to claim 1
6micro-water gaging instrument, is characterized in that: described charge-discharge circuit can automatically switch.
6. SF according to claim 1
6micro-water gaging instrument, is characterized in that: described AD converter consists of two groups of AD chip built-up circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153665.1U CN203949894U (en) | 2014-04-01 | 2014-04-01 | A kind of SF 6micro-water gaging instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153665.1U CN203949894U (en) | 2014-04-01 | 2014-04-01 | A kind of SF 6micro-water gaging instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203949894U true CN203949894U (en) | 2014-11-19 |
Family
ID=51891923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420153665.1U Expired - Fee Related CN203949894U (en) | 2014-04-01 | 2014-04-01 | A kind of SF 6micro-water gaging instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203949894U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713919A (en) * | 2015-03-04 | 2015-06-17 | 山东电力设备有限公司 | On-line detection device for micro-water content of SF6 gas in transformer bushing |
-
2014
- 2014-04-01 CN CN201420153665.1U patent/CN203949894U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713919A (en) * | 2015-03-04 | 2015-06-17 | 山东电力设备有限公司 | On-line detection device for micro-water content of SF6 gas in transformer bushing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20150401 |
|
| EXPY | Termination of patent right or utility model |