CN2045855U - Coal mine special-purpose gas chromatograph - Google Patents
Coal mine special-purpose gas chromatograph Download PDFInfo
- Publication number
- CN2045855U CN2045855U CN 88216441 CN88216441U CN2045855U CN 2045855 U CN2045855 U CN 2045855U CN 88216441 CN88216441 CN 88216441 CN 88216441 U CN88216441 U CN 88216441U CN 2045855 U CN2045855 U CN 2045855U
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- CN
- China
- Prior art keywords
- chromatograph
- hydrogen flame
- coal mine
- thermal conductivity
- reburner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a coal mine special-purpose chromatograph which is characterized in that an independent space between a hydrogen flame detector and a chromatographic column chamber is provided with a converter. Carbon molecular sieve chromatographic columns are strung between the sample valve of the hydrogen flame detector and the converter, and 5A molecular sieve chromatographic columns are strung between the sample valve of a thermal conductivity cell detector and the thermal conductivity cell detector. The coal mine special-purpose chromatograph can sample and detect five kinds of gas content of O-[2], N-[2], CO, CH-[4] and CO-[2] of the underground air of a coal mine within 15 minutes once. The coal mine special-purpose chromatograph has high precision, quick time and stable operation, which is a special-purpose instrument for detecting gas components of the underground air of the coal mine.
Description
The utility model relates to a kind of gas chromatograph, particularly a kind of instrumentation that detects the coal mine air.
At present, departments such as oil, chemical industry, agricultural chemicals, medical and health, the metallurgical industry used chromatograph of examining the quality of the production belongs to the detection of pure gas more, and promptly every kind of detecting device can only be checked pure gas or a few gas.As survey multiple gases and must change detecting device.Example SP-501N can only detect two kinds of gases when gas chromatograph is used for detecting colliery underground air composition, because hydrogen flame detector can only be analyzed the methane gas in the mine air, thermal conductivity cell detector can only be analyzed oxygen, these two kinds of detecting devices can not be simultaneously and usefulness, and it is once about 24 hours to change time of detecting device.SP-2307 type gas chromatograph owing to thermal conductance, hydrogen flame detector sample introduction all pass through the conductance cell gage beam, causes thermal conductance baseline instability at zero point, noise to increase.
The purpose of this utility model is a kind of following five kinds of gas componant O of coal mine that can single injected sampling analyze of development
2, N
2, CO, CH
4, CO
2Gas chromatograph.
Solution of the present utility model is achieved in that establishes a space independently in addition between hydrogen flame detector (18) and chromatogram column compartment (13), place a reburner (17) in this space.Reburner (17) comprises conversion post, reburner body of heater and radiator valve.Cut down between (16) and the reburner (17) string at the hydrogen flame detector sample introduction carbonaceous molecular sieve chromatographic column (15), sample CO, CO are arranged
2And CH
4Gas cuts down (16) sample introduction from the hydrogen flame detector sample introduction, through carbonaceous molecular sieve (15), and reburner (17), output of hydrogen flame detector (18) back and record.Cut down between (11) and the thermal conductivity cell detector (10) string at the conductance cell sample introduction 5A molecular sieve chromatography post (14) is arranged, oxygen and nitrogen cut down (11) sample introduction from the conductance cell sample introduction, through 5A molecular sieve chromatography post (14), thermal conductivity cell detector (10) detects back output and record.The indoor fan in addition of chromatographic column is so that the column compartment temperature is even.
For simultaneously and the time spent at hydrogen flame detector and thermal conductivity cell detector, can observe separately temperature at any time with a millivoltmeter, realize with a switch for this reason.The fire resistive material potter's clay of reburner, the aluminium vanadine, refractory brick powder etc. is got the mud shape, like this between fire resistive material and the electric furnace heating wire without any the gap, electric furnace heating wire is ingress of air not, therefore not oxidation prolongs serviceable life of electric furnace heating wire.Ion head to the line between the detector housing adds shielding, and its internal layer is a porcelain tube, and skin is used copper sheet ground connection, disturbs with anti-electric field, reduces noise, reaches the purpose of steady baseline.
The effect that the utility model can reach is as follows:
1, can once analyze following five kinds of gas composition: the O of coal mine
2, N
2, CO, CH
4, CO
2
2, the retention time of each component is short: thermal conductivity cell detector: O
2Be 1 minute, N
2It is 1 minute and 10 seconds.
Hydrogen flame detector: CO is 1 minute and 5 seconds in addition; CH
4It is 2 minutes and 42 seconds; CO
2It is 6 minutes and 2 seconds in addition.
3, analytical cycle is fast:
Air sample comprises that be 15 minutes five kinds of composition its analysis times.
4, analysis precision height:
The detectability of CO is 0.5PPm.
CO
2Detectability be 1.5PPm.
CH
4Detectability be 0.6PPm.
O
2Detectability be 0.15%.
N
2Detectability be 0.36%.
5, stability is good:
Hydrogen flame detector its baseline wander in a hour is less than 0.5mv.
Thermal conductivity cell detector its baseline wander in a hour is less than 0.2mv.
Fig. 1 is external form figure of the present utility model.
Fig. 2 is process of gas path figure of the present utility model.
Among Fig. 2:
1-carrier gas steel cylinder (H
2)
2-assists gas cylinder (N
2)
The combustion-supporting gas cylinder of 3-(air)
The 4-decompressor
5-clarifier (discolour silica gel)
The 6-voltage stabilizing is cut down
The 7-current stabilization cuts down
The 8-tensimeter
The 9-spinner-type flowmeter
The 10-thermal conductivity cell detector
11-thermal conductivity cell detector sample introduction cuts down
12-soda-lime post (absorbs CO
2)
13-chromatogram column compartment
14-5A molecular sieve chromatography post
15-carbonaceous molecular sieve chromatographic column
16-hydrogen flame detector sample introduction cuts down
The 17-reburner
The 18-hydrogen flame detector
The contrast accompanying drawing is further described below:
One, detects O
2And N
2Gas circuit:
Carrier gas H
2Reduce pressure through decompressor (4) from high-pressure cylinder (1), remove moisture and organic impurities importing chromatograph by clarifier (5), it is stable with nebulizer gas pressure to cut down (6) by voltage stabilizing earlier in chromatograph, it is constant to keep cutting down top hole pressure especially, current stabilization cuts down (7) under the constant situation of intake pressure like this, no matter how the exit vapour lock changes, can both guarantee constant flow rate.The selection of gas flow mainly is to cut down (7) by current stabilization to regulate, and must be the input constant pressure but current stabilization cuts down the condition of work of (7), so current stabilization cuts down (7) and should be connected on voltage stabilizing and cut down (6) afterwards in gas circuit.The selection of flow rate of carrier gas is also cut down (7) by current stabilization and is regulated, and spinner-type flowmeter (9) can be indicated gas flow, and tensimeter (8) can the preceding pressure of display column.
The detection of oxygen and nitrogen, sample are injected the thermal conductivity cell detector sample introduction with syringe or sampling bladders and are cut down (11), through soda-lime post (12) with the CO in the sample
2Absorption (with protection 5A molecular sieve); enter 5A molecular sieve chromatography post (14); be transformed into electric signal through thermal conductivity cell detector (10) afterwards, export recording pointer to through the conductance cell controller again and depict the curve chromatographic peak as, calculate each components contents in the sample according to the peak of curve of chromatographic peak.
5A molecular sieve chromatography post (14) and carbonaceous molecular sieve chromatographic column (15) are with being placed in the chromatogram column compartment (13), the environment temperature that this column compartment provides for chromatographic column is 80 ℃, for making the column compartment temperature evenly in it fan is housed, the motor that drives fan is fixed on the pallet, and supports so that damping with rubber tube.
The resistance bridge that the measuring circuit of thermal conductivity cell detector (10) is made up of four identical thermal sensing elements of resistance, thermal sensing element is placed in four lumen pores of conductance cell pond body, the pond body places the environment of constant temperature, when having only carrier gas to pass through, because the gentle flow rate of carrier gas in pond is constant, electric bridge is in equilibrium state, no signal output is when sample fraction passes through gage beam, because the thermal conductivity coefficient of the thermal conductivity coefficient of sample fraction and pure carrier gas is different, then the heat taken away of thermal conductance is just different, thereby cause the temperature and the change in resistance of thermal sensing element, make the electric bridge out of trim, signal output is arranged, write down by recording pointer, form chromatographic peak.
Two, detect CO, CH
4, CO
2Gas circuit:
Hydrogen flame detector (18) also has auxiliary gas N except that carrier gas
2With combustion-supporting gas air, N
2Through decompressor (4) decompression, by clarifier (5), (6) are cut down in voltage stabilizing from high-pressure cylinder (2), and tensimeter (8) enters hydrogen flame detector (18).Combustion-supporting gas air from high-pressure cylinder (3) through decompressor (4), clarifier (5), (6) are cut down in voltage stabilizing, tensimeter (8) enters hydrogen flame detector (18).
CO, CO
2, CH
4Sample injects the hydrogen flame detector sample introduction with syringe or sampling bladders and cuts down (16), by carbonaceous molecular sieve chromatographic column (15), reburner (17), enter hydrogen flame detector (18), output electric signal behind micro current amplifier to recording pointer, thereby on recording chart, depict a sets of curves chromatographic peak, calculate each components contents in the sample according to the peak of curve of chromatographic peak.
It is three parts that reburner (17) is divided into:
1, transform post: interior dress " nickel accelerant " catalyzer, its effect are under the environment of 360 ℃ of temperature, make nickel in hydrogen with CO, CO
2Be replaced as CH
4
Its reaction equation is:
2, reburner body of heater: its effect is to provide 360 ℃ thermal source of displacement reaction for transforming post.
3, radiator valve: its effect is that the temperature of reburner is controlled in 360 ℃ ± 5 ℃ the scope.
Like this, CO, CO
2By all being replaced as CH behind the reburner
4, hydrogen flame detector just can react with it, detects its concentration, reaches measure CO, CO simultaneously
2, CH
4The purpose of three kinds of gases.
Claims (4)
1, a kind of gas chromatograph of forming by carrier gas steel cylinder, chromatographic column, detecting device, its spy is characterised in that: independently be provided with reburner (17) in the space between hydrogen flame detector (18) and chromatogram column compartment (13), string has carbonaceous molecular sieve chromatographic column (15) between hydrogen flame detector sampling valve (16) and reburner (17); String has 5A molecular sieve chromatography post (14) between thermal conductivity cell detector sampling valve (11) and the thermal conductivity cell detector (10), and the chromatogram column compartment is equipped with fan in (13).
2, chromatograph according to claim 1 is characterized in that: a switch is arranged on this chromatograph.
3, chromatograph according to claim 2 is characterized in that: the fire resistive material of reburner adopts potter's clay, bauxite, refractory brick powder to get the mud shape.
4, chromatograph according to claim 3 is characterized in that: hydrogen flame ion head extension line adds shielding, and this shields its internal layer is porcelain tube, and skin is used copper sheet ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88216441 CN2045855U (en) | 1988-12-28 | 1988-12-28 | Coal mine special-purpose gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88216441 CN2045855U (en) | 1988-12-28 | 1988-12-28 | Coal mine special-purpose gas chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2045855U true CN2045855U (en) | 1989-10-11 |
Family
ID=4849092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88216441 Withdrawn CN2045855U (en) | 1988-12-28 | 1988-12-28 | Coal mine special-purpose gas chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2045855U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590422A (en) * | 2012-02-20 | 2012-07-18 | 淄博立伟自动化监控设备有限公司 | Special detection device for analyzing three-channel mine drainage gas |
| CN105758969A (en) * | 2016-05-05 | 2016-07-13 | 煤科集团沈阳研究院有限公司 | Gas chromatograph used under mine and use method |
| CN106841407A (en) * | 2015-12-07 | 2017-06-13 | 山西潞安矿业(集团)有限责任公司 | A kind of coal mine fully-mechanized mining working goaf gas-detecting device and its detection method |
-
1988
- 1988-12-28 CN CN 88216441 patent/CN2045855U/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590422A (en) * | 2012-02-20 | 2012-07-18 | 淄博立伟自动化监控设备有限公司 | Special detection device for analyzing three-channel mine drainage gas |
| CN102590422B (en) * | 2012-02-20 | 2014-04-02 | 淄博立伟自动化监控设备有限公司 | Special detection device for analyzing three-channel mine drainage gas |
| CN106841407A (en) * | 2015-12-07 | 2017-06-13 | 山西潞安矿业(集团)有限责任公司 | A kind of coal mine fully-mechanized mining working goaf gas-detecting device and its detection method |
| CN106841407B (en) * | 2015-12-07 | 2020-04-03 | 山西潞安矿业(集团)有限责任公司 | Gas detection device and detection method for goaf of fully mechanized coal mining face of coal mine |
| CN105758969A (en) * | 2016-05-05 | 2016-07-13 | 煤科集团沈阳研究院有限公司 | Gas chromatograph used under mine and use method |
| CN105758969B (en) * | 2016-05-05 | 2018-02-16 | 煤科集团沈阳研究院有限公司 | Gas chromatograph and application method are used under a kind of mine |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |