CN203101134U - Gas production negative pressure equipment and gas detecting system - Google Patents
Gas production negative pressure equipment and gas detecting system Download PDFInfo
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- CN203101134U CN203101134U CN 201220667231 CN201220667231U CN203101134U CN 203101134 U CN203101134 U CN 203101134U CN 201220667231 CN201220667231 CN 201220667231 CN 201220667231 U CN201220667231 U CN 201220667231U CN 203101134 U CN203101134 U CN 203101134U
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Abstract
The utility model discloses gas production negative pressure equipment and a gas detecting system, wherein the gas production negative pressure equipment comprises a controller, a solenoid valve array and a vacuum pump; the controller is used for generating a control signal for controlling the solenoid valve array according to a received electric signal, and the solenoid valve array is respectively connected with the controller and the vacuum pump and is used for opening different solenoid valve combinations according to the control signal to control the flow rate of the vacuum pump. The gas production negative pressure equipment provided by the embodiment of the utility model can be used for solving the technical problem in the prior art that the sampling efficiency is low since the gas production of a gas detector cannot be controlled, thereby achieving a technical effect of improving the sampling speed.
Description
Technical field
The utility model relates to the communications field, in particular to a kind of gas production negative pressure equipment and gas detecting system.
Background technology
Gas detecting instrument (mass spectrometer) is the scientific instrument of indispensability when carrying out scientific experimentation, and it is widely used in departments such as mining site and testing laboratory, is mainly used in all gases is carried out sample detecting.At present, a lot of gas detecting instrument (mass spectrometer) has been arranged on the market, yet these gas detecting instruments mainly are to gather gas sample by the natural inflow mode, promptly, rely on gas nature diffusing capacity to sample, individual other gas detecting instrument (mass spectrometer) is equipped with fan or other auxiliary sampling structure promoting gas flow, but general principles still is to rely on the mode of gas nature disperse to sample.
Yet mainly there is following problem in the equipment that the mode of employing gas nature disperse is sampled:
1) sample rate is slow, even be equipped with the gas detecting instrument (mass spectrometer) of auxiliary sampling structure, sample rate also at several minutes to more than 10 minutes;
2) can't in the environment of draught head is arranged, use, for example, can't in equipment such as hypobaric chamber, hyperbaric oxygen chamber, use.
At above-mentioned problem, effective solution is not proposed as yet at present.
The utility model content
The utility model embodiment provides a kind of gas production negative pressure equipment and gas detecting system, can't control and the lower technical matters of sampling rate that causes the gas production of gas detecting instrument to solve at least in the prior art.
An aspect according to the utility model embodiment, a kind of gas production negative pressure equipment is provided, has comprised: controller, solenoid valve array and vacuum pump, wherein, above-mentioned controller is used for generating according to the electric signal that receives and is used for control signal that above-mentioned solenoid valve array is controlled; Above-mentioned solenoid valve array links to each other with above-mentioned vacuum pump with above-mentioned controller respectively, is used for opening the control of different solenoid valve combination realizations to the flow of above-mentioned vacuum pump according to above-mentioned control signal.
Preferably, the said equipment also comprises pressure transducer, links to each other with above-mentioned controller, and the pressure signal that is used for gathering is converted to above-said current signal and above-said current signal is transferred to above-mentioned controller.
Preferably, above-mentioned controller comprises: AD converter and single-chip microcomputer, and wherein, above-mentioned pressure transducer, the pressure signal that is used for collecting are converted to simulating signal and above-mentioned simulating signal are sent to above-mentioned AD converter as above-said current signal; Above-mentioned AD converter links to each other with above-mentioned pressure transducer, and being used for above-mentioned analog signal conversion is digital signal; Above-mentioned single-chip microcomputer links to each other with above-mentioned AD converter, is used for generating above-mentioned control signal and above-mentioned control signal being sent according to above-mentioned digital signal.
Preferably, above-mentioned single-chip microcomputer is that AT89S52 and/or above-mentioned AD converter are the ADC0809AD converters.
Preferably, said apparatus also comprises: the storer that links to each other with above-mentioned controller, wherein, above-mentioned controller also is used for determining that according to above-mentioned digital signal the height of the gas detecting instrument link to each other with above-mentioned gas production negative pressure equipment and the height of storing according to above-mentioned storer and the solenoid valve corresponding relation between making up generates above-mentioned control signal.
Preferably, above-mentioned controller links to each other with above-mentioned solenoid valve array by one or more relays, and above-mentioned controller is controlled the break-make of above-mentioned one or more relays by above-mentioned control signal.
Preferably, above-mentioned solenoid valve array comprises: 7 three-way electromagnetic valves.
According to the utility model embodiment on the other hand, a kind of gas detecting system is provided, has comprised: gas detecting instrument, little air chamber and above-mentioned gas production negative pressure equipment, wherein, above-mentioned stingy chamber links to each other with above-mentioned gas production negative pressure equipment with the above-mentioned gas detector respectively, is used for voltage stabilizing.
In the utility model embodiment, in the gas production negative pressure equipment, be provided with the controller that is used for the control electromagnetic valve array, thereby make and to make up according to the different solenoid valve of control signal control that controller produces, to realize control to the flow of vacuum pump.The gas production negative pressure equipment that proposes by the utility model embodiment can solve in the prior art and can't control the lower technical matters of sampling rate that causes to the gas production of gas detecting instrument, has reached the technique effect that improves sampling rate.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is a kind of preferred structure block diagram according to the gas production negative pressure equipment of the utility model embodiment;
Fig. 2 is the another kind of preferred structure block diagram according to the gas production negative pressure equipment of the utility model embodiment;
Fig. 3 is the system chart according to the gas production negative pressure equipment of the utility model embodiment;
Fig. 4 is the pin synoptic diagram according to the AT89S52 single-chip microcomputer of the utility model embodiment;
Fig. 5 is the pin synoptic diagram according to the ADC0809AD converter of the utility model embodiment;
Fig. 6 is a kind of preferred synoptic diagram according to the gas detecting system of the utility model embodiment;
Fig. 7 is the another kind of preferred synoptic diagram according to the gas detecting system of the utility model embodiment;
Fig. 8 is a kind of preferred flow charts according to the gas detecting system air pressure control method of the utility model embodiment;
Fig. 9 is the another kind of preferred flow charts according to the gas detecting system air pressure control method of the utility model embodiment.
Embodiment
Hereinafter will describe the utility model with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
The utility model embodiment provides a kind of preferred gas production negative pressure equipment, as shown in Figure 1, comprising: controller 102, solenoid valve array 104 and vacuum pump 106.Below this structure is specifically described.
1) controller 102, are used for generating according to the electric signal that receives being used for control signal that the solenoid valve array is controlled;
2) the solenoid valve array 104, link to each other with vacuum pump 106 with controller 102 respectively, are used for opening the control of different solenoid valve combination realizations to the flow of described vacuum pump according to control signal.
In above-mentioned preferred implementation, in the gas production negative pressure equipment, be provided with the controller that is used for the control electromagnetic valve array, thereby make and to make up according to the different solenoid valve of control signal control that controller produces, to realize control to the flow of vacuum pump.The gas production negative pressure equipment that proposes by the utility model embodiment can solve in the prior art and can't control the lower technical matters of sampling rate that causes to the gas production of gas detecting instrument, has reached the technique effect that improves sampling rate.
In order to make gas detecting instrument can be applied in the environment that has draught head, a pressure transducer can be set, by this pressure transducer with pressure signal, be transferred to controller with the generation control signal corresponding thereby this pressure signal is become electric signal, thereby realize control the solenoid valve array.In a preferred implementation, as shown in Figure 2, above-mentioned gas production negative pressure equipment also comprises pressure transducer 202, links to each other with controller 102, and the pressure signal that is used for gathering is converted to described electric signal and described electric signal is transferred to described controller.
Above-mentioned controller can be made up of AD converter and single-chip microcomputer.Wherein, the analog signal conversion that AD converter is used for receiving is a digital signal, and wherein, pressure transducer is converted to the pressure signal that collects simulating signal and described simulating signal is sent to described AD converter as described electric signal in this process; Described single-chip microcomputer links to each other with described AD converter, is used for generating described control signal and described control signal being sent according to described digital signal.
That is, during final control signal through pressure signal to simulating signal, obtain after twice conversion of digital signal again.Preferably, above-mentioned single-chip microcomputer can adopt the AT89S52 single-chip microcomputer, and above-mentioned AD converter can adopt the ADC0809 converter.Accordingly, the system chart of corresponding gas production negative pressure equipment as shown in Figure 3, comprising: sampled point, KLP-800KG pressure transducer, ADC0809AD converter, AT89S52 single-chip microcomputer and solenoid valve array.
In the system chart of gas production negative pressure equipment shown in Figure 3, governor circuit is to be the control core circuit with the AT89S52 single-chip microcomputer.The pin synoptic diagram of the AT89S52 single-chip microcomputer shown in Fig. 4, the pin synoptic diagram of the above-mentioned ADC0809AD converter shown in Fig. 5.Wherein, the pin D0 of ADC0809AD converter links to each other to P2.7 with the P2.0 of AT89S52 single-chip microcomputer respectively to D7, produces control signal thereby the digital signal that the ADC0809AD converter is converted to is input in the AT89S52 single-chip microcomputer.
Preferably, in the system chart of gas production negative pressure equipment shown in Figure 3, between single-chip microcomputer and solenoid valve array, optical isolation can also be set, be used for photoelectricity and isolate.
In order to adjust flow, can produce control signal according to the height of gas detecting instrument according to the height of the gas detecting instrument that links to each other with this gas production negative pressure equipment.In a preferred implementation, above-mentioned gas production negative pressure equipment also is provided with the storer that links to each other with described controller, wherein, described controller also is used for determining that according to described digital signal the height of the gas detecting instrument link to each other with this gas production negative pressure equipment and the height of storing according to described storer and the solenoid valve corresponding relation between making up generates described control signal.That is, stored the corresponding relation between height and the solenoid valve combination in advance, just can finally determine control signal, to determine the solenoid valve combination according to this corresponding relation and definite elevation information.
Can adopt relay to come the solenoid valve array is made up, promptly, determine that according to the solenoid valve combination of determining those solenoid valves should be opened in the solenoid valve combination, accordingly be in opening, to realize control to solenoid valve unlatching and closed condition with regard to the relay of controlling this solenoid valve correspondence.In a preferred implementation, controller links to each other with described solenoid valve array by one or more relays, and described controller is controlled the break-make of described one or more relays by described control signal.
In above-mentioned each preferred implementation, the solenoid valve array can but to be not limited to be 7 three-way electromagnetic valves.Preferably, the definite control strategy of Dui Ying foundation can be: the following 1#-4# solenoid valve of 200m is opened; 200m-400m; 3#, 4# solenoid valve are opened; The 400m-600m5# solenoid valve is opened; The 600m-800m6# solenoid valve is opened; 800 above Close Alls.
The utility model embodiment also provides a kind of gas detecting system, as shown in Figure 6, gas detecting instrument 602, stingy chamber 604 and above-mentioned gas production negative pressure equipment 606, wherein, stingy chamber links to each other with described gas production negative pressure equipment with described gas detecting instrument respectively, is used for voltage stabilizing.
For the negative pressure gas recovery facility that illustrates that better the utility model is above-mentioned, Fig. 7 has provided a kind of concrete sampling system block diagram of gas detecting system, as shown in Figure 7, comprising: hypobaric chamber 702, mass spectrometer (gas detecting instrument) 602, stingy chamber 604, little air storage chamber 704, solenoid valve array 104, pressure transducer 202, signal processing circuit 706, controller 102 and vacuum pump 106.
The foregoing description has proposed a kind of electrovalve array topworks, and this topworks is mainly by different solenoid valves of control and the vacuum-flow adjustable valve that cooperates with it, to be responsible for the pressure equilibrium at adjusting mass spectrometer two ends.Preferably, this topworks by two 7 logical and solenoid valve, vacuum-flow adjustable valve form.Its using method is: the vacuum flow control valve aperture that links to each other with each relay has nothing in common with each other, wherein the size of each vacuum-flow adjustable valve door closure degree can debug and be provided with by test, open the solenoid valve of various combination by governor circuit by sending different control signal realizations, thereby realize the control of different flow, to reach the purpose of control gas production system held certain pressure difference.
Provide in the system at the foregoing description, with the AT89S52 single-chip microcomputer is the control core, designed unique sampling mechanism, make gas detecting instrument (mass spectrometer) can directly gather and detect the gas of the low atmospheric pressure side that draught head exists, and lift gas detector (mass spectrometer) sample rate greatly.Simultaneously, this negative pressure gas recovery facility belongs to the external hanging type admission gear, and gas detecting instrument (mass spectrometer) is not made any change, and only needs plug-in device can realize improving sample rate, has solved the sampling problem that has under the draught head environment.
On the basis of above-mentioned gas detection system, the utility model embodiment also provides a kind of gas detecting system air pressure control method, as shown in Figure 8, may further comprise the steps:
Step S802: receive control signal, wherein, above-mentioned control signal is used for indicating the solenoid valve combination of the solenoid valve array of above-mentioned gas detection system;
Step S804: open one or more solenoid valves in the combination of above-mentioned solenoid valve according to above-mentioned control signal.
In a preferred implementation, as shown in Figure 9, before receiving control signal, said method also comprises:
Step S902: the atmospheric pressure value of determining the gas that sampling obtains;
Step S904: the height of determining gas detecting instrument according to the above-mentioned atmospheric pressure value of determining;
Step S906: adopt the mode of tabling look-up to determine the solenoid valve combination corresponding with above-mentioned height;
Step S908: produce the control signal that is used to open above-mentioned solenoid valve combination, and above-mentioned control signal is sent.
It can the detected air pressure height be that the gas componant in the 25Km scope is arrived on ground that above-mentioned negative pressure gas recovery facility is applied on the MGA1200EC mass spectrometer, Measuring Time shortens more than 90%, Measuring Time is not about 6 minutes when this device is installed, behind this equipment of installation, Measuring Time shortened to for 6 seconds, can carry out gas composition analysis in the human body of hypobaric chamber differing heights is tested with equipment by this equipment simultaneously.As shown in table 1, be on the MGA1200EC mass spectrometer, to use data contrast table before and after the utility model device, as seen adopt behind this equipment gas production efficient to have and significantly improve.
Table 1
In another embodiment, also provide a kind of software, this software is used for carrying out the technical scheme that the foregoing description and preferred implementation are described.
In another embodiment, also provide a kind of storage medium, stored above-mentioned software in this storage medium, this storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc.
From above description, as can be seen, the utility model has been realized following technique effect: be provided with the controller that is used for the control electromagnetic valve array in the gas production negative pressure equipment, thereby make and to make up according to the different solenoid valve of control signal control that controller produces, to realize control to the flow of vacuum pump.The gas production negative pressure equipment that proposes by the utility model embodiment can solve in the prior art and can't control the lower technical matters of sampling rate that causes to the gas production of gas detecting instrument, has reached the technique effect that improves sampling rate.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. a gas production negative pressure equipment is characterized in that, comprising: controller, solenoid valve array and vacuum pump, wherein,
Described controller is used for generating according to the electric signal that receives and is used for control signal that described solenoid valve array is controlled;
Described solenoid valve array links to each other with described vacuum pump with described controller respectively, is used for opening the control of different solenoid valve combination realizations to the flow of described vacuum pump according to described control signal.
2. equipment according to claim 1 is characterized in that, also comprises pressure transducer, links to each other with described controller, and the pressure signal that is used for gathering is converted to described electric signal and described electric signal is transferred to described controller.
3. equipment according to claim 2 is characterized in that, described controller comprises: AD converter and single-chip microcomputer, wherein,
Described pressure transducer, the pressure signal that is used for collecting are converted to simulating signal and described simulating signal are sent to described AD converter as described electric signal;
Described AD converter links to each other with described pressure transducer, and being used for described analog signal conversion is digital signal;
Described single-chip microcomputer links to each other with described AD converter, is used for generating described control signal and described control signal being sent according to described digital signal.
4. equipment according to claim 3 is characterized in that, described single-chip microcomputer is that AT89S52 and/or described AD converter are the ADC0809AD converters.
5. equipment according to claim 1 is characterized in that, also comprises: the storer that links to each other with described controller, wherein,
Described controller also is used for determining that according to described digital signal the height of the gas detecting instrument link to each other with described gas production negative pressure equipment and the height of storing according to described storer and the solenoid valve corresponding relation between making up generates described control signal.
6. equipment according to claim 1 is characterized in that, described controller links to each other with described solenoid valve array by one or more relays, and described controller is controlled the break-make of described one or more relays by described control signal.
7. according to each described equipment in the claim 1 to 6, it is characterized in that described solenoid valve array comprises: 7 three-way electromagnetic valves.
8. gas detecting system, it is characterized in that, comprising: each described gas production negative pressure equipment in gas detecting instrument, little air chamber and the claim 1 to 7, wherein, described stingy chamber links to each other with described gas production negative pressure equipment with described gas detecting instrument respectively, is used for voltage stabilizing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220667231 CN203101134U (en) | 2012-12-06 | 2012-12-06 | Gas production negative pressure equipment and gas detecting system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220667231 CN203101134U (en) | 2012-12-06 | 2012-12-06 | Gas production negative pressure equipment and gas detecting system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760783A (en) * | 2013-12-31 | 2014-04-30 | 中国人民解放军空军航空医学研究所 | Remote gas path gating device |
| CN103852352A (en) * | 2012-12-06 | 2014-06-11 | 中国人民解放军空军航空医学研究所 | Gas production negative-pressure equipment and gas detection system |
| CN103954481A (en) * | 2014-04-08 | 2014-07-30 | 上海基量标准气体有限公司 | Sampling device and method of negative pressure gas sample |
-
2012
- 2012-12-06 CN CN 201220667231 patent/CN203101134U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852352A (en) * | 2012-12-06 | 2014-06-11 | 中国人民解放军空军航空医学研究所 | Gas production negative-pressure equipment and gas detection system |
| CN103852352B (en) * | 2012-12-06 | 2017-09-12 | 中国人民解放军空军航空医学研究所 | Gas production negative pressure equipment and gas detecting system |
| CN103760783A (en) * | 2013-12-31 | 2014-04-30 | 中国人民解放军空军航空医学研究所 | Remote gas path gating device |
| CN103954481A (en) * | 2014-04-08 | 2014-07-30 | 上海基量标准气体有限公司 | Sampling device and method of negative pressure gas sample |
| CN103954481B (en) * | 2014-04-08 | 2016-07-20 | 上海基量标准气体有限公司 | A kind of negative-pressure gas sample sampler and method |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20131206 |