CN202690117U - Ventilation air collecting and mixing system - Google Patents
Ventilation air collecting and mixing system Download PDFInfo
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- CN202690117U CN202690117U CN2012203303089U CN201220330308U CN202690117U CN 202690117 U CN202690117 U CN 202690117U CN 2012203303089 U CN2012203303089 U CN 2012203303089U CN 201220330308 U CN201220330308 U CN 201220330308U CN 202690117 U CN202690117 U CN 202690117U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
A ventilation air collecting and mixing system comprises a ventilation air well, a coal mine methane pumping station, a shutter-type air-collecting hood, a bypass-mounted shutter valve and an electric regulating valve, wherein the shutter-type air-collecting hood is installed above an air well exhaust port; the shutter-type air-collecting hood is provided with the bypass-mounted shutter valve; the electric regulating valve is positioned in front of the shutter-type air-collecting hood and a converging pipeline; an air well is connected with an air-collecting pipeline through the converging pipeline; and the air-collecting pipeline and a conveying pipeline of a coal mine pumping station converge into an underground mixing pipeline, and then are connected with a ventilation air oxidizing device. The ventilation air collecting and mixing system can adjust the concentration range of the mixed methane more accurately according to needs of subsequent methane utilization; for example, in order to obtain the maximum methane destructive quantity, the mixed concentration of ventilation air and the pumped methane is 0.3-4%, and in order to obtain high-quality available heat, the mixed concentration of the ventilation air and the pumped methane is 0.7-2%; and the ventilation air collecting and mixing system has the advantages of simple structure, capability of changing the adjustment range as required, easiness for operation and the like.
Description
Technical field
The utility model relates to a kind of hybrid system, particularly a kind of collection and hybrid system that is applied to the mine low concentration gas.
Background technology
China is as colliery resource big country, every year is huge because of the gas total amount that the exploitation colliery produces, methane concentration is higher than 30% methane gas and can directly recycles, and the extraction concentration of most of coal mine gases belongs in line scope between 10-25%, and the gas density of central ventilation shaft discharging is generally below 0.75%, the total amount of these firedamp drainages is huge, but not only ignored its huge economic worth as discarded by emptying always, also environment has been caused very large destruction.In recent years, the technology of utilizing of low concentration gas has progressively been developed in various places, makes the ventilation air methane concentration of recoverable be reduced to 4% even lower level.
The Chinese patent of CN201424957Y discloses a kind of weary wind methane oxidation blending gas handling system, is used for the mash gas extraction of the mine air-lack of super low concentration and higher concentration is mixed into the weary wind of recoverable.This system comprises the gas air inlet supervisor who is connected with the weary wind apparatus intake and exhaust of the oxidation circulating system, it is connected with gas air inlet looped pipeline by blender, blender is installed on the gas supervisor, be annular multiple-limb air intake structure, blender comprises the female pipe of annular and air intake branch, the female Guan Yiduan of annular is provided with tube connector, and tube connector is connected with gas air inlet looped pipeline.This system can realize weary wind and the mixed gas requirement of mash gas extraction, but the comparatively loaded down with trivial details safety protection structure of configuration, and friction loss is larger.
CN201375883 discloses a kind of device that utilizes the static mixer mix coal mine gas of patent, a kind of device that utilizes Venturi transmission ejector mix coal mine gas body of patent is disclosed for CN201367915 number, it is comparatively complicated that the characteristics of these two kinds of devices are control flow, and adopt the gas mixing device of Venturi transmission ejector, pressure to driving fluid is had relatively high expectations, and applicable through-flow flow is less.
Summary of the invention
The purpose of this utility model is to provide a kind of weary elegance collection and hybrid system, a kind of weary elegance collection and hybrid system that is applied to gas electricity particularly, this system architecture is simple, the wind gas-removing can be mixed with mash gas extraction, obtain the ultralow concentration gas of certain limit, be convenient to the subsequent recovery utilization.
For achieving the above object, the utility model by the following technical solutions:
Weary wind (VAM) gathers and hybrid system, comprises weary ventilating shaft, coal mine gas drainage pumping plant, venetian blind type gas skirt, band bypass shutter valve and electric control valve.The venetian blind type gas skirt is installed in ventilating shaft floss hole top, the venetian blind type gas skirt is with band bypass shutter valve (multiple damper), before electric control valve is positioned at venetian blind type gas skirt and collection conduits, ventilating shaft is connected with collecting pipe by collection conduits, the transport pipeline of collecting pipe and coal extraction pumping plant is together incorporated the blending pipeline into, is connected with weary wind oxidation unit at last.
From the methane of the mash gas extraction of coal extraction pumping plant, control by a series of methane supervising devices and to inject weary wind pipeline, be that wind gas-removing below 0.75% mixes with concentration in the ventilating shaft, mixed weary wind enters in the weary wind oxidation unit.
Preferably, for obtaining maximum gas destruction amount, the methane volumetric concentration in the mixed weary wind is 0.3-4.0%.
Preferably, for obtaining high-quality available heat, the methane volumetric concentration in the mixed weary wind is 0.7-2.0%.
Preferably, collection conduits is carbon steel material.
Preferably, collecting pipe is carbon steel material.
Preferably, the blending pipeline is concrete or carbon steel material.
Preferably, aforesaid blending pipeline also comprises any one or a few in mine gas injector grid, methane detector, flow meter, thermometer and the pressure transmitter.
Preferably, on the transport pipeline of gas pumping pumping plant methane detector is installed.
Preferably, the outlet of gas pumping pumping plant is equipped with electric control valve.
Preferably, weary elegance collection and hybrid system are externally connected to computerized control system, i.e. methane monitoring system.
Preferably, methane detector is connected with methane monitoring system.
Preferably, methane monitoring system is connected with electric control valve on the conveyance conduit by circuit.
More preferably, methane monitoring system is connected with each apparatus in the hybrid system by circuit and weary elegance collection.
Aforesaid methane monitoring system, its operator scheme includes: automatic mode, manual mode and maintenance model.
Automatic mode: when monitoring system is subject to starting, stops or during the signal such as switching, can automatically start in order, automatically stop or switching according to technological process relevant device (motor operated valve etc.).Manual mode: under the manual state, can implement substep behaviour to each equipment in weary elegance collection and the hybrid system and do, but have the locking of sequencing between each link.Maintenance model: it can operate respectively each equipment in weary elegance collection and the hybrid system, will not have the locking of sequencing between each link.
The operating principle of weary elegance collection and hybrid system: the weary wind in the mine is collected by the venetian blind type gas skirt, flow velocity size when control valve can be regulated its collection, collect later weary wind and be mixed into the blending pipeline with mash gas extraction after by the carbon steel collecting pipe, the gas pumping entrance is equipped with methane detector, methane concentration for detection of mash gas extraction, the blending pipeline is equipped with mine gas injector grid, flow meter, thermometer, methane detector and pressure transmitter successively, for detection of the mixing situation of calculating methane.Whether methane concentration reached predefined scope after system detected mixing by methane detector, thereby determine the mixed gas precision of dynamically continuous gas mixing device, then signal is passed to methane monitoring system, methane monitoring system is sent instruction, according to the electric control valve on the variation ofgas density monitoring conveyance conduit that monitors, the gas amount that enters in the mixing device is monitored adjusting, thereby mixed ventilation air gas concentration is remained in the scope of setting.Specifically, when methane concentration in the mixed weary wind that methane detector detects is lower than minimum setting value, detector passes to the external computer control system with concentration signal, adjusting by computerized control system, suitably turn down the control valve of gas skirt, then increase the flow velocity of mash gas extraction, until mixed weary wind concentration meets the requirements; When methane detects it and detects that methane concentration is higher than maximum set value in the mixed weary wind, similarly, detector passes to the external computer control system with concentration signal, adjusting by computerized control system, suitably reduce the flow velocity of the mash gas extraction of coal mine gas drainage pumping plant, drive simultaneously the control valve of large gas skirt, so regulate, until mixed weary wind concentration meets the requirements.For the operation of methane monitoring system, can according to circumstances take automatic mode, manual mode or maintenance model.
The beneficial effects of the utility model: weary elegance collection of the present utility model and hybrid system, simple in structure, easy to operate, it can will directly be discharged into airborne weary wind at present, is mixed into the certain density ultralow concentration gas that utilizes that can direct oxidation destroys with mash gas extraction.It is characterized in that, can be according to the needs of follow-up gas utilization, mixed gas density scope is regulated comparatively accurately: select when obtaining maximum gas destruction amount weary wind and mash gas extraction are mixed into concentration 0.3-4%, selection is mixed into concentration 0.7-2% with weary wind and mash gas extraction when obtaining high-quality available heat.
Description of drawings
Fig. 1 is the schematic diagram according to a preferred embodiment of the structure of a mine air-lack collection of the present utility model and hybrid system;
Each unit number is respectively among the figure: the weary ventilating shaft of 1-; 2-venetian blind type gas skirt; The 3-electric control valve; The 4-collection conduits; 5-carbon steel collecting pipe; 6-coal mine gas drainage pumping plant; 7-blending pipeline; 8-gas injector grid; The 9-methane detector; The 10-methane detector; The 11-flow meter; The 12-thermometer; The 13-pressure transmitter; The weary wind oxidation unit of 14-.
The specific embodiment
In order more clearly to understand the present invention, the preferred embodiment of a weary elegance collection of the present utility model and hybrid system is described below in conjunction with accompanying drawing.Illustrated embodiment according to weary elegance collection of the present utility model and hybrid system comprises weary ventilating shaft 1, venetian blind type gas skirt 2, electric control valve 3, collection conduits 4, carbon steel collecting pipe 5, gas pumping pumping plant 6, blending pipeline 7, mine gas injector grid 8, methane detector 9, methane detector 10, flow meter 11, thermometer 12 and pressure transmitter 13.Venetian blind type gas skirt 2 is installed in weary ventilating shaft 1 floss hole top, band bypass shutter valve, adopt electric operator to regulate, after electric control valve 3 is installed in gas skirt, before it is positioned at venetian blind type gas skirt 2 and collection conduits 4, weary ventilating shaft 1 is connected with carbon steel collecting pipe 5 by collection conduits 4, carbon steel collecting pipe 5 is together incorporated blending pipeline 7 into the transport pipeline of coal mine gas drainage pumping plant 6, then be connected with the weary wind apparatus 14 of oxidation, methane detector 10 is positioned on the transport pipeline of coal mine gas drainage pumping plant, for detection of the gas implantation concentration of extraction pumping plant.The blending pipeline comprises mine gas injector grid 8, methane detector, 9, flow meter 11, thermometer 12 and pressure transmitter 13.
Embodiment 1A kind of weary elegance collection and hybrid system comprise weary ventilating shaft, venetian blind type gas skirt, electric control valve, collection conduits, carbon steel collecting pipe, gas pumping pumping plant, blending pipeline, mine gas injector grid, methane detector, flow meter, thermometer and pressure transmitter.The venetian blind type gas skirt is installed in weary ventilating shaft floss hole top, band bypass shutter valve, adopt electric operator to regulate, after electric control valve is installed in gas skirt, before it is positioned at venetian blind type gas skirt and collection conduits, weary ventilating shaft is connected with the carbon steel collecting pipe by collection conduits, the transport pipeline of carbon steel collecting pipe and coal mine gas drainage pumping plant is together incorporated the blending pipeline into, then be connected with the weary wind apparatus of oxidation, methane detector is positioned on the transport pipeline of coal mine gas drainage pumping plant, for detection of the gas implantation concentration of extraction pumping plant.The blending pipeline comprises mine gas injector grid, methane detector, flow meter, thermometer and pressure transmitter.Methane monitoring system is adjusted to the automatic mode state, when methane concentration is lower than 0.3% in the mixed weary wind that methane detector detects, detector passes to methane monitoring system with concentration signal, adjusting by methane monitoring system, suitably turn down the electric control valve of gas skirt, then increase the flow velocity of mash gas extraction, until mixed weary wind concentration is controlled in the scope that the methane volumetric concentration is 0.3-4.0%.
Embodiment 2A kind of weary elegance collection and hybrid system comprise weary ventilating shaft, venetian blind type gas skirt, electric control valve, collection conduits, carbon steel collecting pipe, gas pumping pumping plant, blending pipeline, mine gas injector grid, methane detector, flow meter, thermometer and pressure transmitter.The venetian blind type gas skirt is installed in weary ventilating shaft floss hole top, band bypass shutter valve, adopt electric operator to regulate, after electric control valve is installed in gas skirt, before it is positioned at venetian blind type gas skirt and collection conduits, weary ventilating shaft is connected with the carbon steel collecting pipe by collection conduits, the transport pipeline of carbon steel collecting pipe and coal mine gas drainage pumping plant is together incorporated the blending pipeline into, then be connected with the weary wind apparatus of oxidation, methane detector is positioned on the transport pipeline of coal mine gas drainage pumping plant, for detection of the gas implantation concentration of extraction pumping plant.The blending pipeline comprises mine gas injector grid, methane detector, flow meter, thermometer and pressure transmitter, and the input channel of gas pumping pumping plant also is equipped with electric control valve.Methane monitoring system is adjusted to the automatic mode state, when methane detects it and detects that methane concentration is higher than 4.0% in the mixed weary wind, detector passes to methane monitoring system with concentration signal, adjusting by methane monitoring system, suitably reduce the flow velocity of the mash gas extraction of coal mine gas drainage pumping plant, drive simultaneously the control valve of large gas skirt, so regulate, until mixed weary wind concentration meets the requirements.
Embodiment 3A kind of weary elegance collection and hybrid system comprise weary ventilating shaft, venetian blind type gas skirt, electric control valve, collection conduits, carbon steel collecting pipe, gas pumping pumping plant, blending pipeline, mine gas injector grid, methane detector, flow meter, thermometer and pressure transmitter.The venetian blind type gas skirt is installed in weary ventilating shaft floss hole top, band bypass shutter valve, adopt electric operator to regulate, after electric control valve is installed in gas skirt, before it is positioned at venetian blind type gas skirt and collection conduits, weary ventilating shaft is connected with the carbon steel collecting pipe by collection conduits, the transport pipeline of carbon steel collecting pipe and coal mine gas drainage pumping plant is together incorporated the blending pipeline into, then be connected with the weary wind apparatus of oxidation, methane detector is positioned on the transport pipeline of coal mine gas drainage pumping plant, for detection of the gas implantation concentration of extraction pumping plant.The blending pipeline comprises mine gas injector grid, methane detector, flow meter, thermometer and pressure transmitter, and electric control valve also is installed on the transport pipeline of gas pumping pumping plant.Methane monitoring system is adjusted to the automatic mode state, by methane detector the concentration signal that detects is passed to methane monitoring system, pass through again the adjusting of methane monitoring system, open large or turn down control valve, regulate the flow velocity of ultralow concentration gas in mash gas extraction and the ventilating shaft, make that the methane volumetric concentration is controlled in the 0.7-2.0% scope in the mixed weary wind.
Weary wind in the mine is collected by the venetian blind type gas skirt, flow velocity size when control valve can be regulated its collection, collect the transportation of later weary wind by the carbon steel collecting pipe and then be mixed into the blending pipeline with mash gas extraction, the gas pumping entrance is equipped with methane detector, methane concentration for detection of mash gas extraction, the blending pipeline is equipped with mine gas injector grid, flow meter, thermometer, methane detector and pressure transmitter successively, for detection of the mixing situation of calculating methane.Gas enters follow-up weary wind oxidation use device be mixed into the weary wind that concentration is 0.3-4.0% in the blending pipeline after.
It will be understood by those skilled in the art that any combination that has comprised each part mentioned above according to weary elegance collection of the present utility model and hybrid system.
The above only is preferred embodiment of the present utility model; can not limit the utility model; certainly all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all within protection domain of the present utility model.
Claims (11)
1. a weary elegance collection and hybrid system comprise weary ventilating shaft, coal mine gas drainage pumping plant, venetian blind type gas skirt, band bypass shutter valve and electric control valve; The venetian blind type gas skirt is installed in ventilating shaft floss hole top, the venetian blind type gas skirt is with band bypass shutter valve, before electric control valve is positioned at venetian blind type gas skirt and collection conduits, ventilating shaft is connected with collecting pipe by collection conduits, the transport pipeline of collecting pipe and coal extraction pumping plant is together incorporated the blending pipeline into, is connected with weary wind oxidation unit at last.
2. weary elegance collection according to claim 1 and hybrid system, it is characterized in that: collection conduits is carbon steel material.
3. weary elegance collection according to claim 1 and hybrid system, it is characterized in that: collecting pipe is carbon steel material.
4. weary elegance collection according to claim 1 and hybrid system, it is characterized in that: the blending pipeline is concrete or carbon steel material.
5. weary elegance collection according to claim 1 and hybrid system, it is characterized in that: the blending pipeline also comprises any one or a few in mine gas injector grid, flow meter, thermometer and the pressure transmitter.
6. weary elegance collection according to claim 1 and hybrid system is characterized in that: on the transport pipeline of gas pumping pumping plant methane detector is installed.
7. weary elegance collection according to claim 1 and hybrid system, it is characterized in that: the outlet of gas pumping pumping plant is equipped with electric control valve.
8. each described weary elegance collection and hybrid system according to claim 1-7, it is characterized in that: weary elegance collection and hybrid system are externally connected to methane monitoring system.
9. weary elegance collection according to claim 7 and hybrid system, it is characterized in that: methane detector is connected with methane monitoring system.
10. weary elegance collection according to claim 7 and hybrid system is characterized in that: methane monitoring system is connected with electric control valve on the conveyance conduit by circuit.
11. weary elegance collection according to claim 7 and hybrid system is characterized in that: methane monitoring system detects by in circuit and weary elegance collection and the hybrid system each and adjusting device is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203303089U CN202690117U (en) | 2012-04-01 | 2012-07-10 | Ventilation air collecting and mixing system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210094753 | 2012-04-01 | ||
| CN201210094753.4 | 2012-04-01 | ||
| CN2012203303089U CN202690117U (en) | 2012-04-01 | 2012-07-10 | Ventilation air collecting and mixing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202690117U true CN202690117U (en) | 2013-01-23 |
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Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102144747A Pending CN102733872A (en) | 2012-04-01 | 2012-06-27 | Ventilation air methane oxidation power generation system |
| CN2012203036779U Expired - Lifetime CN202732012U (en) | 2012-04-01 | 2012-06-27 | Ventilation air methane oxidization power generation system |
| CN201210214150.3A Active CN102722164B (en) | 2012-04-01 | 2012-06-27 | Distributed control system for coal mine ventilation air oxidation generator set |
| CN2012203032301U Expired - Lifetime CN202735797U (en) | 2012-04-01 | 2012-06-27 | Distributed control system for coal mine ventilation air oxidation generator set |
| CN2012203303089U Expired - Lifetime CN202690117U (en) | 2012-04-01 | 2012-07-10 | Ventilation air collecting and mixing system |
Family Applications Before (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102144747A Pending CN102733872A (en) | 2012-04-01 | 2012-06-27 | Ventilation air methane oxidation power generation system |
| CN2012203036779U Expired - Lifetime CN202732012U (en) | 2012-04-01 | 2012-06-27 | Ventilation air methane oxidization power generation system |
| CN201210214150.3A Active CN102722164B (en) | 2012-04-01 | 2012-06-27 | Distributed control system for coal mine ventilation air oxidation generator set |
| CN2012203032301U Expired - Lifetime CN202735797U (en) | 2012-04-01 | 2012-06-27 | Distributed control system for coal mine ventilation air oxidation generator set |
Country Status (1)
| Country | Link |
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| CN (5) | CN102733872A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017097733A1 (en) * | 2015-12-07 | 2017-06-15 | Dürr Systems Ag | A mixing and processing system of ventilation air methane and coal mine methane |
| CN107143420A (en) * | 2017-05-09 | 2017-09-08 | 阮秀梅 | A kind of coal mine gas integrated application device |
| CN107387155A (en) * | 2017-09-11 | 2017-11-24 | 中煤科工集团重庆研究院有限公司 | A kind of coal bed gas automatic blending control system and regulation and control method |
| CN108916654A (en) * | 2018-07-13 | 2018-11-30 | 平安开诚智能安全装备有限责任公司 | A kind of safe mixing device of ultralow concentration gas and method |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733872A (en) * | 2012-04-01 | 2012-10-17 | 浙江亿扬能源科技有限公司 | Ventilation air methane oxidation power generation system |
| DE102015205516A1 (en) | 2014-12-22 | 2016-06-23 | Dürr Systems GmbH | Apparatus and method for thermal exhaust gas purification |
| CN104848674A (en) * | 2015-05-18 | 2015-08-19 | 上海褐美能源科技有限公司 | Coal mine low concentration gas oxidation high temperature hot air and coal slime preparing and drying technology |
| CN106020325B (en) * | 2016-06-24 | 2017-12-15 | 华电电力科学研究院 | A kind of energy-saving and emission-reduction method based on control valve opening heat consumption rate curve |
| CN112324488B (en) * | 2020-10-30 | 2022-09-16 | 中国平煤神马能源化工集团有限责任公司 | System for preparing saturated steam by low-gas high-temperature heat storage oxidation of coal mine |
| CN113375175B (en) * | 2021-07-15 | 2022-08-09 | 北京中源博智节能科技有限公司 | Coal mine gas regenerative oxidation method |
| CN115247974A (en) * | 2022-07-25 | 2022-10-28 | 华中科技大学 | System and method for thermochemical heat storage by using methane combustion waste heat |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7161678B2 (en) * | 2002-05-30 | 2007-01-09 | Florida Power And Light Company | Systems and methods for determining the existence of a visible plume from the chimney of a facility burning carbon-based fuels |
| CN101413398B (en) * | 2008-11-28 | 2010-12-15 | 山东理工大学 | Heating start-up system of mine ventilation air methane oxidized apparatus |
| CN101766952B (en) * | 2009-12-30 | 2012-11-21 | 山东理工大学 | Gas flow reverse control method of ventilation air methane thermal oxidation device of coal mine |
| CN101900332B (en) * | 2010-05-07 | 2011-12-28 | 大连海事大学 | Heat accumulation type super-low calorific value fuel gas treatment and energy utilization device |
| CN101845960A (en) * | 2010-05-07 | 2010-09-29 | 大连海事大学 | Ventilation air methane countercurrent oxidation device with flue gas suction device |
| CN201963341U (en) * | 2010-12-24 | 2011-09-07 | 上海攀极投资有限公司 | Comprehensive application system of coalmine gas |
| CN102733872A (en) * | 2012-04-01 | 2012-10-17 | 浙江亿扬能源科技有限公司 | Ventilation air methane oxidation power generation system |
-
2012
- 2012-06-27 CN CN2012102144747A patent/CN102733872A/en active Pending
- 2012-06-27 CN CN2012203036779U patent/CN202732012U/en not_active Expired - Lifetime
- 2012-06-27 CN CN201210214150.3A patent/CN102722164B/en active Active
- 2012-06-27 CN CN2012203032301U patent/CN202735797U/en not_active Expired - Lifetime
- 2012-07-10 CN CN2012203303089U patent/CN202690117U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017097733A1 (en) * | 2015-12-07 | 2017-06-15 | Dürr Systems Ag | A mixing and processing system of ventilation air methane and coal mine methane |
| CN107143420A (en) * | 2017-05-09 | 2017-09-08 | 阮秀梅 | A kind of coal mine gas integrated application device |
| CN107387155A (en) * | 2017-09-11 | 2017-11-24 | 中煤科工集团重庆研究院有限公司 | A kind of coal bed gas automatic blending control system and regulation and control method |
| CN108916654A (en) * | 2018-07-13 | 2018-11-30 | 平安开诚智能安全装备有限责任公司 | A kind of safe mixing device of ultralow concentration gas and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN202732012U (en) | 2013-02-13 |
| CN102733872A (en) | 2012-10-17 |
| CN102722164A (en) | 2012-10-10 |
| CN102722164B (en) | 2014-04-09 |
| CN202735797U (en) | 2013-02-13 |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160419 Address after: 047100 Shanxi city of Changzhi province Changzhi County High River Coal Mining Area Patentee after: CHANGZHI YIYANG ENERGY TECHNOLOGY CO.,LTD. Patentee after: ZHEJIANG YIYANG ENERGY TECHNOLOGY Co.,Ltd. Address before: Hangzhou City, Zhejiang province 310013 Xihu District Bauhinia Road 2, The Union Buildings, A block 302 Patentee before: Zhejiang Yiyang Energy Technology Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |