CN202837281U - Embedded-control-based oil-gas concentration detection alarm calibrating device capable of dynamically distributing air - Google Patents
Embedded-control-based oil-gas concentration detection alarm calibrating device capable of dynamically distributing air Download PDFInfo
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- CN202837281U CN202837281U CN 201220547349 CN201220547349U CN202837281U CN 202837281 U CN202837281 U CN 202837281U CN 201220547349 CN201220547349 CN 201220547349 CN 201220547349 U CN201220547349 U CN 201220547349U CN 202837281 U CN202837281 U CN 202837281U
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Abstract
The utility model provides an embedded-control-based oil-gas concentration detection alarm calibrating device capable of dynamically distributing air. The embedded-control-based oil-gas concentration detection alarm calibrating device comprises an air compressor and a gas cylinder, wherein the air compressor is connected with a gas mass flow meter; the gas mass flow meter is connected with an analog/digital (A/D) converter and a gas mixing chamber respectively; the gas cylinder is connected with the gas mass flow meter; the gas mass flow meter is connected with a digital/analog (D/A) converter and the gas mixing chamber respectively; the A/D converter and the D/A converter are respectively connected with an embedded computer system; the embedded computer system is connected with a liquid crystal display and a touch screen; and the gas mixing chamber is connected with a diluent gas nozzle. According to the calibrating device, automatic control of data acquisition, real-time processing and operation process can be realized, a mass flow mixing method is employed, and due to the accurate arrangement, various standard gases of different concentrations can be configured, and the outstanding characteristics of high accuracy, reliability, safety and the like are reflected in the operation of dynamically configuring the combustible gas.
Description
Technical field
The utility model belongs to gas concentration detection alarm device Calibration Technology field, relates to the calibrating installation of a kind of oil vapour and combustable gas concentration detection alarm device, is specifically related to the dynamically gas concentration detection alarm device calibrating installation of distribution of a kind of embedded Control and energy.
Background technology
The places such as oil depot, refueling station, colliery owing to reasons such as inevitably evaporation, leakages, are the hazardous areas that produces the accidents such as burning, blast.Therefore, these places are a large amount of adopts the combustable gas concentration in the portable or online flammable gas-detecting alarm device indicative for environments whether to be in safety margin.Because all kinds of inflammable gass or gas concentration detection alarm device all exist datum drift and sensor catabiosis, can cause detection alarm device sensitivity, detect hydraulic performance decline, detect data deviation, even the fault such as malfunctioning of reporting to the police, so that the safety guarantee in above-mentioned place faces the dangerous edge of technical failure." flammable gas-detecting alarm device vertification regulation " (JJG693-2011) require various flammable gas-detecting alarm devices must carry out first, follow-up and use in calibrating.Present employed calibrating installation exists the verification result accuracy not high enough with calibrating efficient, calibrating and demarcate high with the gas cost, verification process is complicated, and is bulky, carry inconvenience, and online dynamic air-distributing, so that calibrating and staking-out work are difficult to carry out.
The utility model content
The purpose of this utility model provides the gas concentration detection alarm device calibrating installation of a kind of embedded Control and the dynamic distribution of energy, be easy to carry, verification process is simple, has higher verification result accuracy and calibrating efficient, and can online dynamic air-distributing, reduce calibrating and demarcate use the gas cost.
For achieving the above object, the technical scheme that the utility model adopts is: a kind of embedded Control and energy be the gas concentration detection alarm device calibrating installation of distribution dynamically, comprise air compressor and gas cylinder, air compressor is connected with mass-flow gas meter, mass-flow gas meter is connected with mixing chamber with A/D converter respectively, gas cylinder is connected with gas mass flow controller, gas mass flow controller is connected with mixing chamber with D/A converter respectively, A/D converter is connected with embedded computer system respectively with D/A converter, embedded computer system also is connected with liquid crystal display and touch-screen, and mixing chamber is connected with the diluents valve.
The utility model gas concentration detection alarm device calibrating installation adopts embedded computer system as core processor, and the calibrating gas of preparation accurately, has reliably improved accuracy and the calibrating efficient of verification result; Be easy to transmission of quantity value and trace to the source, stability, repeatability and linearity are better; Satisfy " flammable gas-detecting alarm device vertification regulation " requirement (JJG693-2011), solved inconvenient, untimely, the not frequent difficult problem of present oil and gas detection alarm calibrating.Adopt liquid crystal display and the touch-screen of 800 * 600 pixels, do not need artificial calculating, only need just can finish distribution work by the simple input of touch-screen, simple and quick, easy to use.Satisfy the calibrating requirement of combustible gas and oil and gas detection alarm, to guaranteeing the safety such as oil depot, colliery, avoid the suffocate vital role that has of intoxication accident of personnel.
Description of drawings
Fig. 1 is the structural representation of the utility model gas concentration detection alarm device calibrating installation.
Fig. 2 is the structural representation of gas temperature evener in the utility model gas concentration detection alarm device calibrating installation.
Fig. 3 is the left view of Fig. 2.
Among the figure: 1. embedded computer system, 2. hummer, 3.A/ D converter, 4. the diluents valve 5. cleans valve, 6.D/A converter, 7. mixing chamber, 8. gas mass flow controller, 9. mass-flow gas meter, 10. the first retaining valve, 11. on-off valves, 12. flow control valves, 13. three-way connection, 14. first devices for drying and filtering, 15. first self-closing rapid-acting couplings, 16. air compressor, 17. gas cylinder, 18. high pressure gauges, 19. reduction valve, 20. low-pressure meter, 21. the second self-closing rapid-acting coupling, 22. second devices for drying and filtering, 23. gas temperature eveners, 24. power supply, 25. the second retaining valve, 26. liquid crystal display and touch-screen, 27. heat radiation bases, 28. the combustion gas tracheae, 29. air tracheaes.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
The utility model provides the dynamically gas concentration detection alarm device calibrating installation of distribution of a kind of structure employing embedded Control as shown in Figure 1 and energy, is used for calibrating and demarcates gas concentration detection alarm device.This calibrating installation comprises gas cylinder 17 and air compressor 16, gas cylinder 17 is connected with gas temperature evener 23 by pipeline, on this pipeline, be provided with successively high pressure gauge 18, reduction valve 19, low-pressure meter 20, the second self-closing rapid-acting coupling 21 and the second device for drying and filtering 22 along direction from gas cylinder 17 to gas temperature evener 23; Air compressor 16 is connected with gas temperature evener 23 by pipeline, on this pipeline, be provided with successively the first self-closing rapid-acting coupling 15, the first device for drying and filtering 14 and three-way connection 13 along direction from air compressor 16 to gas temperature evener 23; Three-way connection 13 also is connected with cleaning valve 5 by pipeline, and on this pipeline, along being provided with successively flow control valve 12 and on-off valve 11 from three-way connection 13 to the direction of cleaning valve 5, on-off valve 11 is the push button on-off valve.
Gas temperature evener 23 as shown in Figures 2 and 3, comprise columniform heat radiation base 27, heat radiation base 27 outside surfaces are wound with combustion gas tracheae 28 and air tracheae 29, combustion gas tracheae 28 and air tracheae 29 are copper pipe, combustion gas tracheae 28 and air tracheae 29 side by side spiral winding in heat radiation base 27 surfaces.Heat radiation base 27 is fixed pedestals of combustion gas tracheae 28 and air tracheae 29, adopts the hollow aluminum pipe of certain-length to make.Combustion gas tracheae 28 and air tracheae 29 are wound in heat radiation base 27 outer surface part and form a right cylinder, and this cylindrical outside surface is wound with the gum aluminium foil, with the increase heat-conducting area, and realize fastening.By local soldering combustion gas tracheae 28 and air tracheae 29 are tightened together with heat radiation base 27 respectively, and increase heat-conducting area.The two ends of combustion gas tracheae 28 are connected with the second retaining valve 25 with the second device for drying and filtering 22 respectively; The two ends of air tracheae 29 are connected with the first retaining valve 10 with the first device for drying and filtering 14 respectively.
The first device for drying and filtering 14 adopts identical device for drying and filtering with the second device for drying and filtering 22, is used for filtering methane gas and airborne water vapor, and its bottom interface can discharge the aqueous water that filters out.
The first retaining valve 10 adopts identical retaining valve with the second retaining valve 25, only allow gas to enter gas mass flow controller 8 and mass-flow gas meter 9 from gas temperature evener 23, and do not allow gas to be back to the gas temperature evener 23 from gas mass flow controller 8 and mass-flow gas meter 9.Gas temperature evener 23 makes through the methane gas of device for drying and filtering and air and is under the temperature conditions of balance, reduces the measuring and calculating of follow-up gaseous mass, flow and the error that control causes with this.
The first self-closing rapid-acting coupling 15 is identical with the structure of the second self-closing rapid-acting coupling 21, the quick connection that be used for to realize joint with separate, have good sealing and interchangeability.
Embedded computer system 1 storage inside " flammable gas-detecting alarm device vertification regulation " all combustion gas gas datas in (JJG693-2011) can adopt different types of combustion gas that dissimilar gas security is intersected and demarcate and calibrating.Embedded computer system 1 is designed with the timer program, can realize that precision is not less than 0.02 second response timing.
Liquid crystal display and touch-screen 26 is used for input channel and closes, opens, cleans, examines and determine startups, examines and determine and the various control commands such as stop, also capable of regulating proportioning value, distribution flow, proportioning unit, show respectively the real-time flow data of combustion gas and air, historical flow curve, and the output stream value that shows current diluents.
During with the utility model device calibrating gas concentration detection alarm device, connect first the first self-closing rapid-acting coupling 15 and the second self-closing rapid-acting coupling 21, this moment, on-off valve 11 was in off-state; Then open the gas cylinder 17(inflammable gas that is full of inflammable gas and be generally the high concentration methane gas, also can select the gas of other type) cylinder valve and reduction valve 19, regulate the pressure of gas cylinder 17 output combustion gas according to the registration of high pressure gauge 18 and low-pressure meter 20; Inflammable gas enters the second exsiccator 22 by high pressure gauge 18, reduction valve 19, low-pressure meter 20 and the second self-closing rapid-acting coupling 21 successively, behind the second exsiccator 22 filtering moisture and impurity, enter the combustion gas tracheae 28 of gas temperature evener 23, again through the second retaining valve 25 inflow gas mass flow controllers 8.Start air compressor 16 when opening gas cylinder 17, the pure air that air compressor 16 produces enters the first device for drying and filtering 14 by the first self-closing rapid-acting coupling 15, the air tracheae 29 and the first retaining valve 10 that flow through successively behind moisture in the first device for drying and filtering 14 filtering gases and the impurity in the gas temperature evener 23 arrive mass-flow gas meter 9, and enter mixing chamber 7; In two kinds of gas flow processes, in the time of may having the air of temperature contrast and inflammable gas at the same time through gas temperature evener 23 heat interchange can occur, so that the temperature of the air that flows out from gas temperature evener 23 and inflammable gas is identical.The flow simulation voltage signal that air stream produces when mass-flow gas meter 9, input embedded computer system 1 after A/D converter 3 is converted to digital signal, the input embedded computer system 1 digital signal in embedded computer system 1 inside by program, after the algorithm process that the various data such as gas concentration proportioning parameter that the user sets realize, convert the digital signal after the processing that determines inflammable gas flow sizes values to, digital signal after this processing is used for controlling the flow that gas mass flow controller 8 is inputted the inflammable gas of mixing chambers 7 after D/A converter 6 converts simulating signal to.The inflammable gas that enters mixing chamber 7 fully mixes with the air that enters mixing chamber 7, the meet the requirements dilution combustion gas of special ratios of formation, this dilution combustion gas is via 4 outputs of diluents valve, can gather sampler bag or directly be passed into the sensor interface of gas concentration detection alarm device, be carried out follow-up measurement and calibration operation.
When needing to change the concentration of the dilution combustion gas that forms in the mixing chamber 7, need only operate the program interface of liquid crystal display and touch-screen 26, revise the proportioning value size of inflammable gas and air, the simulating signal of sending into gas mass flow controller 8 just can enter mixing chamber 7 according to the proportioning value adjustment after the change in 4 seconds gas flow realizes the proportioning adjustment of any gas concentration.
When needing to clean gas concentration detection alarm device sensor, press on-off valve 11, make its conducting, filter and go deimpurity air to arrive flow control valve 12 along the bypass branch of three-way connection 13 through the first device for drying and filtering 14, and process on-off valve 11 is from cleaning valve 5 ejections, spray into gas concentration detection alarm device sensor, realize the cleaning operation in the gas concentration detection alarm device verification process.Can be adjusted to by the flow that flow control valve 12 will clean valve 5 ejection gases the gas flow of user's expectation in the cleaning process.If not conducting of on-off valve 11 is then cleaned gas circuit and closed, do not have gas from cleaning valve 5 outputs.
In addition, the utility model adopts embedded system control and the dynamic gas concentration detection alarm device calibrating installation of distribution, and its calibrating gas that makes various concentration ratios can also be filled with steel cylinder or airbag uses to the strange land except directly use at the scene.
In this calibrating installation course of work, when on liquid crystal display and the touch-screen 26 action response being arranged, hummer 2 is sounded, and plays suggesting effect.
The utility model alrms for oil-gas concentration calibrating installation adopts advanced embedded system, high performance gas mass flow controller and high-precision D/A conversion unit, realizes the automatic control of data acquisition, in real time processing and operating process.Its distribution principle is the mass rate mixing method, by arranging accurately, just configurable various calibrating gas that go out multiple content, in order to improve the precision of data, adopt isolation to amplify and various Anti-Jamming Technique, make this equipment in the work of dynamic-configuration inflammable gas, show the remarkable characteristics such as it is accurate, reliable, safety completely.
Claims (8)
1. an embedded Control and dynamically the gas concentration detection alarm device calibrating installation of distribution, it is characterized in that, comprise air compressor (16) and gas cylinder (17), air compressor (16) is connected with mass-flow gas meter (9), mass-flow gas meter (9) is connected with mixing chamber (7) with A/D converter (3) respectively, gas cylinder (17) is connected with gas mass flow controller (8), mass flow controller (8) is connected with mixing chamber (7) with D/A converter (6) respectively, A/D converter (3) is connected with embedded computer system (1) respectively with D/A converter (6), embedded computer system (1) also is connected with liquid crystal display and touch-screen (26), and mixing chamber (7) is connected with diluents valve (4).
2. embedded Control as claimed in claim 1 and dynamically the gas concentration detection alarm device calibrating installation of distribution, it is characterized in that, described gas cylinder (17) is connected with mass-flow gas meter (9) with gas mass flow controller (8) respectively by gas temperature evener (23) with air compressor (16); Pipeline between gas temperature evener (23) and the gas mass flow controller (8) is provided with the second retaining valve (25), pipeline between gas temperature evener (23) and the mass-flow gas meter (9) is provided with the first retaining valve (10), and these two retaining valves are used for preventing that gas backstreaming is to gas temperature evener (23).
3. embedded Control as claimed in claim 2 and dynamically the gas concentration detection alarm device calibrating installation of distribution, it is characterized in that, described gas temperature evener (23) comprises thermal conductivity heat radiation base (27) that good material makes, the outside surface of heat radiation base (27) is wound with combustion gas tracheae (28) and air tracheae (29) side by side; The part that combustion gas tracheae (28) and air tracheae (29) are wound in heat radiation base (27) outside surface jointly forms right cylinder, this periphery is wound with the gum aluminium foil, the two ends of combustion gas tracheae (28) are connected with the first retaining valve (10) with air compressor (16) respectively, and the two ends of air tracheae (29) are connected with the second retaining valve (25) with gas cylinder (17) respectively.
4. embedded Control as claimed in claim 3 and dynamically the gas concentration detection alarm device calibrating installation of distribution, it is characterized in that, on the pipeline between described combustion gas tracheae (28) and the air compressor (16), be provided with successively the first self-closing rapid-acting coupling (15) and the first device for drying and filtering (14) along direction from air compressor (16) to combustion gas tracheae (28).
5. embedded Control as claimed in claim 4 and dynamically the gas concentration detection alarm device calibrating installation of distribution, it is characterized in that, also be connected with detergent line on the pipeline between described the first device for drying and filtering (14) and the combustion gas tracheae (28), the end of this detergent line is cleaning valve (5), in this detergent line, along being provided with successively flow control valve (12) and on-off valve (11) towards the direction of cleaning valve (5).
6. embedded Control as claimed in claim 3 and dynamically the gas concentration detection alarm device calibrating installation of distribution, it is characterized in that, on the pipeline between described the second air flue (29) and the gas cylinder (17), be provided with successively reduction valve (19), the second self-closing rapid-acting coupling (21) and the second device for drying and filtering (22) along direction from gas cylinder (17) to the second air flue (29).
7. embedded Control as claimed in claim 3 and dynamically the gas concentration detection alarm device calibrating installation of distribution is characterized in that, described heat radiation base (27) adopts aluminum pipe to make.
8. embedded Control as claimed in claim 1 and dynamically the gas concentration detection alarm device calibrating installation of distribution, it is characterized in that, described embedded computer system (1), gas mass flow controller (8) and mass-flow gas meter (9) are connected with power supply (24) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220547349 CN202837281U (en) | 2012-10-24 | 2012-10-24 | Embedded-control-based oil-gas concentration detection alarm calibrating device capable of dynamically distributing air |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220547349 CN202837281U (en) | 2012-10-24 | 2012-10-24 | Embedded-control-based oil-gas concentration detection alarm calibrating device capable of dynamically distributing air |
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| CN202837281U true CN202837281U (en) | 2013-03-27 |
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| CN 201220547349 Expired - Fee Related CN202837281U (en) | 2012-10-24 | 2012-10-24 | Embedded-control-based oil-gas concentration detection alarm calibrating device capable of dynamically distributing air |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558346A (en) * | 2013-11-15 | 2014-02-05 | 国家电网公司 | Device for checking sulfur hexafluoride leakage alarm apparatus |
| CN104502542A (en) * | 2014-12-29 | 2015-04-08 | 广东电网有限责任公司电力科学研究院 | Field inspection device for gas monitoring alarm |
| CN109490473A (en) * | 2018-11-13 | 2019-03-19 | 郑州迪邦科技有限公司 | A kind of gas purity analyzer |
| CN112649560A (en) * | 2019-10-12 | 2021-04-13 | 中国石油化工股份有限公司 | Gas emission simulation system |
-
2012
- 2012-10-24 CN CN 201220547349 patent/CN202837281U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558346A (en) * | 2013-11-15 | 2014-02-05 | 国家电网公司 | Device for checking sulfur hexafluoride leakage alarm apparatus |
| CN104502542A (en) * | 2014-12-29 | 2015-04-08 | 广东电网有限责任公司电力科学研究院 | Field inspection device for gas monitoring alarm |
| CN109490473A (en) * | 2018-11-13 | 2019-03-19 | 郑州迪邦科技有限公司 | A kind of gas purity analyzer |
| CN112649560A (en) * | 2019-10-12 | 2021-04-13 | 中国石油化工股份有限公司 | Gas emission simulation system |
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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: 20130327 Termination date: 20151024 |
|
| EXPY | Termination of patent right or utility model |