CN104502542A - Field inspection device for gas monitoring alarm - Google Patents
Field inspection device for gas monitoring alarm Download PDFInfo
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- CN104502542A CN104502542A CN201410850213.3A CN201410850213A CN104502542A CN 104502542 A CN104502542 A CN 104502542A CN 201410850213 A CN201410850213 A CN 201410850213A CN 104502542 A CN104502542 A CN 104502542A
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- gas
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- mass flow
- flow controller
- intake opening
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Abstract
The invention discloses a field inspection device for a gas monitoring alarm. The device comprises a standard gas generation device, an internally-built standard air source, a first air inlet, a second air inlet and a two-position three-way valve, wherein the standard gas generation device comprises a first mass flow controller, a second mass flow controller, a mixing chamber and a standard gas output hole; the internally-built standard air source is connected with an input end of the first mass flow controller; the first air inlet is connected with a first input end of the two-position three-way valve; the second air inlet is connected with a second input end of the two-position three-way valve; an output end of the two-position three-way valve is connected with an input end of the second mass flow controller; an output end of the first mass flow controller is connected with an input end of the mixing chamber; an output end of the second mass flow controller is connected with the other input end of the mixing chamber; an output end of the mixing chamber is connected with the standard gas output hole. According to the device provided by the embodiment, the operational reliability of a transmitter can be evaluated.
Description
Technical field
The present invention relates to power domain, particularly relate to a kind of field test device of gas-monitoring alarm.
Background technology
Sulfur hexafluoride (SF
6) when for operating electric equipment, once device fails, can produce many kinds poisonous, there is corrosive gas and solid decomposition product; In addition, the normal equipment run also likely produces leakage, jeopardizes the personal safety of operation and maintainer.According to GB26860-2011 " electric power safety working regulation generating plant and transformer station's electric part " 11.6 regulation, enter SF
6electrical equipment low level district or cable duct work, first should detect oxygen level (being not less than 18%) and SF
6gas content (being no more than 1000 μ L/L).Therefore, the ground floor of equipment installation site indoors, is all provided with oxygen measuring apparatus and the concentration of sulfur hexafluoride instrument of band warning device.When sulfur hexafluoride gas concentration numerical value in indoor environment is higher than alarming value lower than setting of the alarming value of setting or oxygen content, device output alarm signal, and can send acousto-optic warning, reminds the relevant personnel to note, and takes further measures.
The SF adopted in current electrical network
6warning device is a kind of intelligent on-Line Monitor Device, is mainly used in SF in synchronous Real-Time Monitoring surrounding air
6g&O content, reports to the police by arranging alarm set point.From measuring principle, main point effluve ionization method, Infrared spectra adsorption method and electrochemical sensor method.Its system architecture composition is basically identical, and primarily of gas sample module, gas analysis module, main frame and supplemental functionality four part composition, can this device SF in Accurate Determining surrounding air
6g&O content, at alarm set point (the oxygen concentration alarm set point 18%, SF of default
6gas concentration alarm set point 1000 μ L/L) can accurately report to the police, be evaluate SF
6the key of the online alert detecting device reliability of Leakage Gas.
Summary of the invention
Based on this, the object of the present invention is to provide a kind of field test device of gas-monitoring alarm, it independently can produce calibrating gas, in order to evaluate the functional reliability of transmitter.
For achieving the above object, the embodiment of the present invention by the following technical solutions:
A kind of field test device of gas-monitoring alarm, comprise: standard gas generating apparatus, built-in standard source of the gas, the first air intake opening, the second air intake opening, two-position three-way valve, described standard gas generating apparatus comprises the first mass flow controller, the second mass flow controller, mixing chamber and gas delivery outlet;
Described built-in standard source of the gas is connected with the input end of described first mass flow controller, described first air intake opening is connected with the first input end of described two-position three-way valve, described second air intake opening is connected with the second input end of described two-position three-way valve, the output terminal of described two-position three-way valve is connected with the input end of described second mass flow controller, the output terminal of described first mass flow controller is connected with an input end of described mixing chamber, the output terminal of described second mass flow controller is connected with another input end of described mixing chamber, the output terminal of described mixing chamber is connected with described gas delivery outlet.
Based on the on-site calibration device in the present embodiment, it is by the first mass flow controller access standard source of the gas, the gas of the first air intake opening or the gas of the second air intake opening is accessed by the second mass flow controller, the flow of the first mass flow controller to the gas of standard source of the gas controls, the flow of the second mass flow controller to the gas of the first air intake opening or the second air intake opening controls, and dilute at the gas of mixing chamber to standard source of the gas, after mixing chamber mixing, the gas meeting normal concentration by being exported by gas delivery outlet, by this field test apparatus, with to substation field, can also modify to required calibrating gas at any time, the transmitter of on-Line Monitor Device can detect the gas that gas delivery outlet exports, testing result based on transmitter can be evaluated the functional reliability of transmitter.Add the first mass flow controller, the second mass flow controller accurately can control gas flow, exact evaluation can also be carried out to the metrical error of transmitter.
Accompanying drawing explanation
Fig. 1 is the structural representation of the field test device of the gas-monitoring alarm of the embodiment of the present invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that embodiment described herein only in order to explain the present invention, do not limit protection scope of the present invention.
The structural representation of the field test device of the gas-monitoring alarm of the embodiment of the present invention has been shown in Fig. 1.
As shown in Figure 1, the field test device of the gas-monitoring alarm in the present embodiment includes: standard gas generating apparatus, built-in standard source of the gas, the first air intake opening, the second air intake opening, two-position three-way valve, wherein, this built-in standard source of the gas can be purification sulfur hexafluoride (SF
6) gas, this standard gas generating apparatus includes the first mass flow controller, second mass flow controller, mixing chamber and gas delivery outlet, built-in standard source of the gas is connected with the input end of the first mass flow controller, first air intake opening is connected with the first input end of two-position three-way valve, second air intake opening is connected with the second input end of two-position three-way valve, the output terminal of two-position three-way valve is connected with the input end of the second mass flow controller, the output terminal of the first mass flow controller is connected with mixing chamber input end, the output terminal of the second mass flow controller is connected with another input end of mixing chamber, the output terminal of mixing chamber is connected with gas delivery outlet.
Based on the device in the present embodiment, be built-in with standard gas generating apparatus, by the first mass flow controller access standard source of the gas, the gas of the first air intake opening or the gas of the second air intake opening is accessed by the second mass flow controller, the flow of the first mass flow controller to the gas of standard source of the gas controls, the flow of the second mass flow controller to the gas of the first air intake opening or the second air intake opening controls, and dilute at the gas of mixing chamber to standard source of the gas, after mixing chamber mixing, the gas meeting normal concentration by being exported by gas delivery outlet, by this field test apparatus, with to substation field, can also modify to required calibrating gas at any time, the transmitter of on-Line Monitor Device can detect the gas that gas delivery outlet exports, testing result based on transmitter can be evaluated the functional reliability of transmitter.Add the first mass flow controller, the second mass flow controller accurately can control gas flow, exact evaluation can also be carried out to the metrical error of transmitter.
Wherein, as shown in Figure 1, device in the present embodiment can also include pressure testing and controlling unit, the first pressure valve and non-return valve, and built-in standard source of the gas is connected with the input end of the first mass flow controller by pressure testing and controlling unit, the first pressure valve, non-return valve successively.Pressure testing and controlling unit can be used to the pressure change of the built-in calibrating gas of Real-Time Monitoring, to remind changing built-in calibrating gas in time, thus safeguards system even running.
In a concrete example, above-mentioned first air intake opening can be nitrogen (N
2) air intake opening, above-mentioned second air intake opening can be air inlet.Owing to containing a lot of impurity in air, directly air is defeated by the quality that the second mass flow controller may have influence on the calibrating gas be finally mixed to get, and then the assay of impact to transmitter.Therefore, as shown in Figure 1, device in the present embodiment can also include the air purification processing equipment between the second input end being connected to the second air intake opening and two-position three-way valve, to carry out purified treatment to the gas of the second air intake opening collection, make the requirement more being met standard mixture by the gas of the second mass flow controller.In a concrete example, as shown in Figure 1, this air purification processing equipment can comprise the air cleaning filter, extract system, de-watering apparatus and the gas-holder that connect successively, second air intake opening is connected with air cleaning filter, and the outlet of gas-holder is connected with the second input end of two-position three-way valve.
In addition, in the example depicted in fig. 1, the second pressure valve between the second input end being connected to gas-holder and two-position three-way valve can also be included, to realize the Stress control to the gas that gas-holder exports.
Based on the device of the embodiment of the present invention shown in Fig. 1, as on-the-spot SF
6when the transmitter that the online leakage monitoring of gas is reported to the police needs checking and appraising, by the apparatus, with of the embodiment of the present invention to on-the-spot, the subsidiary output verification of handle assembly emits (the gas delivery outlet corresponding to device) to aim at the diffusion openings of transmitter to be detected.The built-in standard gas generating apparatus wherein comprised evaluates SF with generating
6the calibrating gas of on-line monitoring transducing unit, can change SF fast
6the calibrating gas needed for transmitter of online leakage monitoring alarm, to realize on-the-spot rapid verification evaluation.The standard source of the gas that the input of its air source inlet is purchased, its gas delivery outlet exports the calibrating gas of the various concentration needed for transmitter unit to be checked, collection SF
6and O
2being detected on integrally of content.User need not buy special distribution equipment when carrying out transmitters sense, only need prepare two bottles of gases, one bottle of SF
6with one bottle of N
2, verification is convenient, cost is low.
When to SF
6when the transmitter that the online leakage monitoring of gas is reported to the police carries out checking and appraising, be remove dilution standard gas (can select at corresponding display window) with nitrogen or air by selecting, if select air, then two-bit triplet valve breakdown N
2air intake opening (being the first air intake opening in shown in Fig. 1), then can arrange required standard gas concentration, by clicking buttons such as " beginnings " after being provided with, just can configure the calibrating gas exporting the concentration set and verifying tested instrument.
After this calibrating gas exports, the course of normal operation of transmitter can detect this calibrating gas, thus output detections result.Because the concentration of calibrating gas is known, based on transmitter testing result can to the work of transmitter whether reliable and serviceability evaluate, such as: whether measured value is accurate, and whether reaction velocity meets the requirements, and whether the accuracy of measured value meets expection etc.When transmitter is connected with monitoring main frame, the warning device of monitoring main frame can also be checked whether normal.
This device of the present invention can be widely used in all kinds of power test research institute of electric system and on-the-spot and SF
6the manufacturer of leakage monitoring instrument, to the security of operation, the prevention SF that ensure sulfur hexafluoride electrical equipment
6the leakage pollution on the environment of high-voltage switch gear and destruction, Maintenance and Repair human life safety are significant.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. the field test device of a gas-monitoring alarm, it is characterized in that, comprise: standard gas generating apparatus, built-in standard source of the gas, the first air intake opening, the second air intake opening, two-position three-way valve, described standard gas generating apparatus comprises the first mass flow controller, the second mass flow controller, mixing chamber and gas delivery outlet;
Described built-in standard source of the gas is connected with the input end of described first mass flow controller, described first air intake opening is connected with the first input end of described two-position three-way valve, described second air intake opening is connected with the second input end of described two-position three-way valve, the output terminal of described two-position three-way valve is connected with the input end of described second mass flow controller, the output terminal of described first mass flow controller is connected with an input end of described mixing chamber, the output terminal of described second mass flow controller is connected with another input end of described mixing chamber, the output terminal of described mixing chamber is connected with described gas delivery outlet.
2. the field test device of gas-monitoring alarm according to claim 1, it is characterized in that, also comprise pressure testing and controlling unit, the first pressure valve and non-return valve, described built-in standard source of the gas is connected with the input end of described first mass flow controller by described pressure testing and controlling unit, described first pressure valve, described non-return valve successively.
3. the on-site calibration device of gas-monitoring alarm according to claim 1, is characterized in that, also comprises the air purification processing equipment be connected between described second air intake opening and the second input end of described two-position three-way valve.
4. the on-site calibration device of gas-monitoring alarm according to claim 3, it is characterized in that, described air purification processing equipment comprises the air cleaning filter, extract system, de-watering apparatus and the gas-holder that connect successively, described second air intake opening is connected with described air cleaning filter, and the outlet of described gas-holder is connected with the second input end of described two-position three-way valve.
5. the on-site calibration device of gas-monitoring alarm according to claim 4, is characterized in that, also comprises the second pressure valve be connected between described gas-holder and the second input end of described two-position three-way valve.
6. the on-site calibration device of the gas-monitoring alarm according to claim 1 to 5 any one, is characterized in that, described built-in standard source of the gas is purification sulfur hexafluoride gas.
7. the on-site calibration device of the gas-monitoring alarm according to claim 1 to 5 any one, is characterized in that, described first air intake opening is nitrogen inlet.
8. the on-site calibration device of the gas-monitoring alarm according to claim 1 to 5 any one, is characterized in that, described second air intake opening is air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850213.3A CN104502542A (en) | 2014-12-29 | 2014-12-29 | Field inspection device for gas monitoring alarm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850213.3A CN104502542A (en) | 2014-12-29 | 2014-12-29 | Field inspection device for gas monitoring alarm |
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| CN104502542A true CN104502542A (en) | 2015-04-08 |
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|---|---|---|---|
| CN201410850213.3A Pending CN104502542A (en) | 2014-12-29 | 2014-12-29 | Field inspection device for gas monitoring alarm |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105334299A (en) * | 2015-12-15 | 2016-02-17 | 北京雪迪龙科技股份有限公司 | Standard gas generation system and method for dynamically monitoring standard gas |
| CN106621883A (en) * | 2016-12-28 | 2017-05-10 | 张晓燕 | Portable type multi-component gas diluting device |
| CN111473921A (en) * | 2020-04-16 | 2020-07-31 | 国网湖南省电力有限公司 | Detection system of sulfur hexafluoride leakage alarm device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105334299A (en) * | 2015-12-15 | 2016-02-17 | 北京雪迪龙科技股份有限公司 | Standard gas generation system and method for dynamically monitoring standard gas |
| CN106621883A (en) * | 2016-12-28 | 2017-05-10 | 张晓燕 | Portable type multi-component gas diluting device |
| CN111473921A (en) * | 2020-04-16 | 2020-07-31 | 国网湖南省电力有限公司 | Detection system of sulfur hexafluoride leakage alarm device |
| CN111473921B (en) * | 2020-04-16 | 2022-09-09 | 国网湖南省电力有限公司 | Detection system of sulfur hexafluoride leakage alarm device |
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Application publication date: 20150408 |
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