CN203642986U - Metering device of laboratory trace gas - Google Patents
Metering device of laboratory trace gas Download PDFInfo
- Publication number
- CN203642986U CN203642986U CN201320879492.7U CN201320879492U CN203642986U CN 203642986 U CN203642986 U CN 203642986U CN 201320879492 U CN201320879492 U CN 201320879492U CN 203642986 U CN203642986 U CN 203642986U
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- gauge line
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Abstract
A metering device of laboratory trace gas is composed of a gas purification unit, a metering and collecting unit and a control unit; the gas purification unit comprises a gas feeding pipe, a drying column, a desulfuration column and a gas feeding electromagnetic valve, wherein the drying column is filled with drying agents, and the desulfuration column is filled with desulfuration agents; the metering and collecting unit comprises a U-shaped metering tube, a constant temperature water bath trough, a gas exhausting electromagnetic valve, a gas exhausting electromagnetic valve outlet tube and a gas collecting bag, wherein the U-shaped metering tube contains metering liquid and is placed in the constant temperature water bath trough; the control unit comprises a liquid level controller, a gas feeding electromagnetic control switch, a gas exhausting electromagnetic control switch, an electronic numerical reader and a power source. The metering device of the laboratory trace gas has the advantages that the metering device is simple in structure, convenient to manufacture and install, low in manufacturing cost and easy to implement, a metering method is high in accuracy and high in applicability, the total quantity of produced gas and the target gas quantity can be measured accurately, the production speed of the gas can be measured, and laboratory study requirements can be met completely.
Description
Technical field
The utility model relates to waste anaerobic digestion processing technology field, particularly the measuring apparatus of a kind of laboratory minimum gas.
Background technology
While adopting anaerobic digestion techniques to process organic waste or high concentrated organic wastewater, the biogas of generation or methane are a kind of clean energy resourcies, and the generation of biogas or methane and biogas component are to evaluate the key parameter of anaerobic digestion device and treatment process quality.At present the method for anaerobic digestion installation for fermenting gas production rate metering in laboratory is mainly contained to two kinds, the one, wet test meter, this instrument range is large, larger at the minimum gas time error of Measurement Laboratory scale, affects experimental precision; The 2nd, use gas flowmeter directly to measure, this import instrument cost is high, generally cannot in laboratory, use in batches.Adopt this method and system, can substitute the gas flowmeter of wet test meter and import, the gas that anaerobic ferment devices is produced carries out precision measurement, thereby optimizes Anaerobic Digestion technique.
Summary of the invention
The purpose of this utility model is the problem in the past existing in minimum gas metering for laboratory, and the measuring apparatus of a kind of laboratory minimum gas is provided, and this measuring apparatus is simple in structure, fabrication and installation convenient, cheap, easy to implement.
The technical solution of the utility model:
A kind of laboratory minimum gas measuring apparatus, formed by gas purification units, metering collector unit and control module, gas purification units comprises draft tube, dry post, desulfurization post and air inlet electromagnetic valve and is connected in series by pipeline, dry post and desulfurization post are organic glass pipe, bottom and top are respectively equipped with air intake opening and gas outlet, desiccant-filled in dry post, in desulfurization post, fill desulfurizing agent, metering collector unit comprises U-shaped gauge line, constant temperature water bath, the solenoid valve of giving vent to anger, give vent to anger electromagnetic valve outlet pipe and gas collecting bag, one end of U-shaped gauge line is respectively equipped with U-shaped gauge line draft tube and U-shaped gauge line escape pipe, U-shaped gauge line draft tube is connected with the outlet of air inlet electromagnetic valve, U-shaped gauge line escape pipe is connected with the import of the solenoid valve of giving vent to anger, the solenoid valve of giving vent to anger is connected with gas collection bag by the electromagnetic valve outlet pipe of giving vent to anger, the other end of U-shaped gauge line is respectively equipped with liquid level sensor and U-shaped gauge line gas outlet and seals by U-shaped metering pipe close, in U-shaped gauge line, metering liquid is housed, U-shaped gauge line is placed in constant temperature water bath, control module comprises fluid level controller, air inlet electromagnetic valve gauge tap, the solenoid control of giving vent to anger switch, figure reading electronic device and power supply, and fluid level controller, air inlet electromagnetic valve gauge tap, the solenoid control of giving vent to anger switch are connected with liquid level sensor, air inlet electromagnetic valve and the solenoid valve of giving vent to anger by wire respectively.
The specification of described organic glass pipe is internal diameter 10cm, wall thickness 5 ㎜, height 20cm, U-shaped gauge line is glass material, band volume scale, internal diameter 1.5-3cm, wall thickness 3 ㎜, significant height 20-30cm, the internal diameter of U-shaped gauge line draft tube and escape pipe, gas outlet is 0.3cm.
Described drying agent is calcium sulphate or silica gel, and desulfurizing agent is iron oxide or granular activated carbon.
Described metering liquid is according to concrete measurement gas kind and require configuration, in metering fermentation tube when micro-biogas, and the hydrochloric acid solution that metering liquid is 2wt%; When methane in metering in biogas, metering liquid is that the NaOH of concentration 4mol/L or KOH solution are in order to absorb the acid gas components in biogas.
Advantage of the present utility model and good effect:
This measuring apparatus is simple in structure, fabrication and installation convenient, cheap, easy to implement, metering method accuracy is high, applicability is strong, both can Accurate Determining γ-ray emission total amount and object gas amount, the speed again can mensurated gas composition producing, can meet laboratory study requirement completely.
[brief description of the drawings]
Accompanying drawing is this apparatus structure schematic diagram.
In figure: 1. dry post 3. drying agent 4. desulfurization post 5. desulfurizing agents of draft tube 2.
6. air inlet electromagnetic valve 7.U type gauge line draft tube 8.U type gauge line 9. metering liquids
10. liquid level sensor 11.U type gauge line gas outlet 12.U type metering pipe close
The 13.U type gauge line escape pipe 14. solenoid valve 15. electromagnetic valve outlet pipe of giving vent to anger of giving vent to anger
16. gas collection bag 17. fluid level controller 18. air inlet electromagnetic valve gauge tap
19. solenoid control switch 20. figure reading electronic device 21. constant temperature water bath 22. power supplys of giving vent to anger
[embodiment]
embodiment:
A kind of laboratory minimum gas measuring apparatus, as shown in drawings, formed by gas purification units, metering collector unit and control module, gas purification units comprises draft tube 1, dry post 2, desulfurization post 4 and air inlet electromagnetic valve 6 and is connected in series by pipeline, dry post 2 and desulfurization post 4 are organic glass pipe, bottom and top are respectively equipped with air intake opening and gas outlet, and dry post 2 is interior desiccant-filled 3, the interior filling desulfurizing agent 5 of desulfurization post 4, metering collector unit comprises U-shaped gauge line 8, constant temperature water bath 21, the solenoid valve 14 of giving vent to anger, give vent to anger electromagnetic valve outlet pipe 15 and gas collecting bag 16, one end of U-shaped gauge line 8 is respectively equipped with U-shaped gauge line draft tube 7 and U-shaped gauge line escape pipe 13, U-shaped gauge line draft tube 7 is connected with the outlet of air inlet electromagnetic valve 6, U-shaped gauge line escape pipe 13 is connected with the import of the solenoid valve 14 of giving vent to anger, the solenoid valve 14 of giving vent to anger is connected with gas collection bag 16 by the electromagnetic valve outlet pipe 15 of giving vent to anger, the other end of U-shaped gauge line 8 is respectively equipped with liquid level sensor 10 and U-shaped gauge line gas outlet 11 and seals by U-shaped metering pipe close 12, in U-shaped gauge line 8, metering liquid 9 is housed, U-shaped gauge line 8 is placed in constant temperature water bath 21, control module comprises fluid level controller 17, air inlet electromagnetic valve gauge tap 18, the solenoid control of giving vent to anger switch 19, figure reading electronic device 20 and power supply 22, and fluid level controller 17, air inlet electromagnetic valve gauge tap 18, exhaust solenoid valve gauge tap 19 are connected with liquid level sensor 10, air inlet electromagnetic valve 6 and the solenoid valve 14 of giving vent to anger by wire respectively.
In this embodiment, the specification of organic glass pipe is internal diameter 10cm, wall thickness 5 ㎜, significant height 20cm, and U-shaped gauge line is glass material, band volume scale, internal diameter 2.5cm, wall thickness 3 ㎜, significant height 30cm, the internal diameter of U-shaped gauge line draft tube and escape pipe, gas outlet is 0.3cm.
The metering method of utilizing this laboratory minimum gas measuring apparatus, implementation method is as follows:
1) operating process: the gas being produced by laboratory reaction device is after the dry post and desulfurization post of clean unit, enter U-shaped gauge line by SCS Air Suction Control Solenoid, now exhaust control closed electromagnetic valve, metering liquid in U-shaped gauge line produces liquid level difference under pressure, when this liquid level difference reaches after setting value, liquid level sensor starts, now SCS Air Suction Control Solenoid is closed, exhaust control solenoid valve is opened, in U-shaped gauge line, gas is discharged via exhaust control solenoid valve, enter in gas collection bag, with the electronic counter of memory function, record different time gas milliliter reading, U-shaped gauge line is placed in constant temperature water bath is convenient to generation gas volume to be converted into numerical value under the status of criterion.
2) gas volume calculating method:
According to class of liquids in U-shaped gauge line, determine its density, then water column pressure while calculating full scale according to the setting scale-height of " 0 " scale place and liquid level sensor position in U-shaped gauge line is poor, in conjunction with the design temperature of constant temperature water bath, adopt calibrating gas state equation pV=nRT to calculate the volume of measured gas.
This device is applicable to various high-precision flows single or complicated component gas in laboratory and measures device, and error meets measurement standard requirement.
Claims (4)
1. a laboratory minimum gas measuring apparatus, it is characterized in that: formed by gas purification units, metering collector unit and control module, gas purification units comprises draft tube, dry post, desulfurization post and air inlet electromagnetic valve and is connected in series by pipeline, dry post and desulfurization post are organic glass pipe, bottom and top are respectively equipped with air intake opening and gas outlet, desiccant-filled in dry post, in desulfurization post, fill desulfurizing agent, metering collector unit comprises U-shaped gauge line, constant temperature water bath, the solenoid valve of giving vent to anger, give vent to anger electromagnetic valve outlet pipe and gas collecting bag, one end of U-shaped gauge line is respectively equipped with U-shaped gauge line draft tube and U-shaped gauge line escape pipe, U-shaped gauge line draft tube is connected with the outlet of air inlet electromagnetic valve, U-shaped gauge line escape pipe is connected with the import of the solenoid valve of giving vent to anger, the solenoid valve of giving vent to anger is connected with gas collection bag by the electromagnetic valve outlet pipe of giving vent to anger, the other end of U-shaped gauge line is respectively equipped with liquid level sensor and U-shaped gauge line gas outlet and seals by U-shaped metering pipe close, in U-shaped gauge line, metering liquid is housed, U-shaped gauge line is placed in constant temperature water bath, control module comprises fluid level controller, air inlet electromagnetic valve gauge tap, the solenoid control of giving vent to anger switch, figure reading electronic device and power supply, and fluid level controller, air inlet electromagnetic valve gauge tap, the solenoid control of giving vent to anger switch are connected with liquid level sensor, air inlet electromagnetic valve and the solenoid valve of giving vent to anger by wire respectively.
2. laboratory minimum gas measuring apparatus according to claim 1, it is characterized in that: the specification of described organic glass pipe is internal diameter 10cm, wall thickness 5 ㎜, height 20cm, U-shaped gauge line is glass material, band volume scale, internal diameter 1.5-3cm, wall thickness 3 ㎜, significant height 20-30cm, the internal diameter of U-shaped gauge line draft tube and escape pipe, gas outlet is 0.3cm.
3. laboratory minimum gas measuring apparatus according to claim 1, is characterized in that: described drying agent is calcium sulphate or silica gel, desulfurizing agent is iron oxide or granular activated carbon.
4. laboratory minimum gas measuring apparatus according to claim 1, is characterized in that: described metering liquid is according to concrete measurement gas kind and require configuration, in metering fermentation tube when micro-biogas, and the hydrochloric acid solution that metering liquid is 2wt%; When methane in metering in biogas, metering liquid is that the NaOH of concentration 4mol/L or KOH solution are in order to absorb the acid gas components in gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320879492.7U CN203642986U (en) | 2013-12-30 | 2013-12-30 | Metering device of laboratory trace gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320879492.7U CN203642986U (en) | 2013-12-30 | 2013-12-30 | Metering device of laboratory trace gas |
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| Publication Number | Publication Date |
|---|---|
| CN203642986U true CN203642986U (en) | 2014-06-11 |
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|---|---|---|---|
| CN201320879492.7U Expired - Fee Related CN203642986U (en) | 2013-12-30 | 2013-12-30 | Metering device of laboratory trace gas |
Country Status (1)
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| CN (1) | CN203642986U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674156A (en) * | 2013-12-30 | 2014-03-26 | 农业部环境保护科研监测所 | Metering device and metering method of laboratory trace gases |
| CN110954175A (en) * | 2019-12-20 | 2020-04-03 | 沈阳师范大学 | Micro-gas measuring device for semi-automatic laboratory and use method thereof |
| CN111013829A (en) * | 2019-12-12 | 2020-04-17 | 西藏华泰龙矿业开发有限公司 | Inflation amount detection device of flotation machine |
-
2013
- 2013-12-30 CN CN201320879492.7U patent/CN203642986U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674156A (en) * | 2013-12-30 | 2014-03-26 | 农业部环境保护科研监测所 | Metering device and metering method of laboratory trace gases |
| CN103674156B (en) * | 2013-12-30 | 2016-06-22 | 农业部环境保护科研监测所 | A kind of metering method utilizing laboratory micro gas-metering device |
| CN111013829A (en) * | 2019-12-12 | 2020-04-17 | 西藏华泰龙矿业开发有限公司 | Inflation amount detection device of flotation machine |
| CN110954175A (en) * | 2019-12-20 | 2020-04-03 | 沈阳师范大学 | Micro-gas measuring device for semi-automatic laboratory and use method thereof |
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| 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: 20140611 Termination date: 20151230 |
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| EXPY | Termination of patent right or utility model |