CN202039831U - Automatic control device for air output stability during well type underground coal bed gasification - Google Patents
Automatic control device for air output stability during well type underground coal bed gasification Download PDFInfo
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- CN202039831U CN202039831U CN2011201452972U CN201120145297U CN202039831U CN 202039831 U CN202039831 U CN 202039831U CN 2011201452972 U CN2011201452972 U CN 2011201452972U CN 201120145297 U CN201120145297 U CN 201120145297U CN 202039831 U CN202039831 U CN 202039831U
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- air
- coal bed
- underground coal
- bed gasification
- control device
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Abstract
The utility model discloses an automatic control device for air output stability during well type underground coal bed gasification. Air-speed pressure sensors are arranged on an air outlet laneway of an underground coal bed gasification furnace at a distance of 50-200m; an air outlet of the underground coal bed gasification furnace is provided with a fire-resistant air door on which an electromagnetic air valve is arranged; the electromagnetic air valve is used for controlling the opening angle of the air door; and the air-speed pressure sensors are electrically connected with the electromagnetic air valve through control panels. By using the automatic control device, the uniformity of gasification speed is ensured, the air output stability is automatically controlled, the uniformity of output air flow temperature is also realized, and damage to gasification equipment and instruments due to overhigh temperature is avoided.
Description
Technical field
The utility model relates to colliery subterranean coal gasification technology, has related in particular to well formula subterranean coal gasification furnace.
Background technology
The coal layer underground gasifying technology is a new production technique, so-called subterranean coal gasification, be exactly by control device with subterranean coal directly at underground combustion, displace highly purified coal bed gas by technical finesse then, be gas production by becoming to mine, production technology is simple, can reduce security incident, reaches clean purpose of producing.
The subterranean coal gasification of well formula colliery is arranged at present, generally is underground coal seam gasification stove and two gas channels directly constructed in the colliery, the one, and air duct (downcast and air intake lane); The 2nd, gas passage (returnairshaft and return airway)), delivers air to undergroundly by air duct, coal gas is transported to ground by gas passage.Because coal discharges a large amount of heats when burning in gasification furnace, the gas temperature that furnace bottom produces is up to 1000-1200 ℃, after causing coal gas of high temperature to arrive face of land outlet, the gas output instability, temperature surpasses 150 ℃, and high-temperature gas is heating gas channel high temperature in the process of circulation on the way, gas channel country rock heat-resistant stability is reduced, and high-temperature gas makes ground coal gas receiving pipeline system produce infringement to face of land outlet, and a large amount of heat energy run off can not make full use of.
Summary of the invention
The purpose of this utility model is the above-mentioned deficiency that overcomes existing subterranean coal gasification furnace, and designing a kind of raising has well formula subterranean coal gasification furnace coal combustion rate, and realizes the stable automaton of gas output.
The technical solution of the utility model is: a kind of have a well formula subterranean coal gasification gas output stability automaton, it is to arrange a wind speed pressure sensor in the tunnel of giving vent to anger of subterranean coal gasification furnace every 50-200m, in the gas outlet of subterranean coal gasification furnace fire-resistant air door is set, fire-resistant air door is provided with electromagnetic gas valve, the size of electromagnetic gas valve control door opening angle, the wind speed pressure sensor is electrically connected with electromagnetic gas valve by control panel.
The utility model control method is, the Tunnel Pressure value of giving vent to anger that the wind speed pressure sensor will record is converted into the signal of telecommunication and passes to control panel (MCU), and control panel (MCU) is controlled the angle of fire-resistant air door by the control electromagnetic gas valve.When air pressure is too big, control panel transmits signal and gives electromagnetic gas valve, electromagnetic gas valve shrinks, and reduces the air door opening angle, reduces gas output, simultaneously air door air pressure of section at the bottom of the gasification furnace increases, inlet channel pressure is reduced relatively, thereby inlet channel oxygen supply amount is reduced, reduced oxygen supply amount at the bottom of the gasification furnace, thereby reduced gas production, slowed down the reaction speed of furnace bottom; When air pressure during less than a certain value, control panel transmits signal and gives electromagnetic gas valve, the electromagnetic gas valve elongation when air door angle increases, increases gas output, simultaneously since air door air pressure of section at the bottom of the gasification furnace reduce, inlet channel pressure is increased relatively, thereby inlet channel oxygen supply amount is increased, increased oxygen supply amount at the bottom of the gasification furnace, thereby increased gas production, accelerated the furnace bottom reaction speed.
The utility model has guaranteed the uniformity of gasification rate, the automatic control of the stability that realized giving vent to anger, and the uniformity of the gas flow temperature that also realized giving vent to anger is avoided the too high infringement to equipment for gasification and instrument of temperature.This method safety, efficient, cost is low.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Marginal data: the 1-tunnel of giving vent to anger, 2-wind speed pressure sensor, 3-control panel, 4-electromagnetic gas valve, the fire-resistant air door of 5-.
The specific embodiment
Further specify technical solutions of the utility model with reference to the accompanying drawings.
A kind of have a well formula subterranean coal gasification gas output stability automaton, it is to arrange a wind speed pressure sensor 2 every 50-200m in the tunnel 1 of giving vent to anger of subterranean coal gasification furnace, fire-resistant air door 5 is set in the gas outlet of subterranean coal gasification furnace, fire-resistant air door 5 is provided with electromagnetic gas valve 4, the opening angle of the fire-resistant air door 5 of electromagnetic gas valve 4 controls, wind speed pressure sensor 2 is connected on the electromagnetic gas valve 4 by control panel 3.
Above-mentioned control panel 3 is electrically connected by modulate circuit, A/D convertor circuit, MCU single-chip microcomputer and power supply and forms.
Claims (1)
1. one kind has well formula subterranean coal gasification gas output stability automaton, it is characterized in that, it is to arrange a wind speed pressure sensor in the tunnel of giving vent to anger of subterranean coal gasification furnace every 50-200m, in the gas outlet of subterranean coal gasification furnace fire-resistant air door is set, fire-resistant air door is provided with electromagnetic gas valve, the size of electromagnetic gas valve control door opening angle, the wind speed pressure sensor is electrically connected with electromagnetic gas valve by control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201452972U CN202039831U (en) | 2011-04-28 | 2011-04-28 | Automatic control device for air output stability during well type underground coal bed gasification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201452972U CN202039831U (en) | 2011-04-28 | 2011-04-28 | Automatic control device for air output stability during well type underground coal bed gasification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202039831U true CN202039831U (en) | 2011-11-16 |
Family
ID=44967280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201452972U Expired - Fee Related CN202039831U (en) | 2011-04-28 | 2011-04-28 | Automatic control device for air output stability during well type underground coal bed gasification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202039831U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220858A (en) * | 2011-04-28 | 2011-10-19 | 新汶矿业集团有限责任公司 | Device for automatically controlling gas output stability of well type underground coal bed gasification |
| US9963949B2 (en) | 2012-06-28 | 2018-05-08 | Carbon Energy Limited | Sacrificial liner linkages for auto-shortening an injection pipe for underground coal gasification |
| US9976403B2 (en) | 2012-06-28 | 2018-05-22 | Carbon Energy Limited | Method for shortening an injection pipe for underground coal gasification |
-
2011
- 2011-04-28 CN CN2011201452972U patent/CN202039831U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220858A (en) * | 2011-04-28 | 2011-10-19 | 新汶矿业集团有限责任公司 | Device for automatically controlling gas output stability of well type underground coal bed gasification |
| US9963949B2 (en) | 2012-06-28 | 2018-05-08 | Carbon Energy Limited | Sacrificial liner linkages for auto-shortening an injection pipe for underground coal gasification |
| US9976403B2 (en) | 2012-06-28 | 2018-05-22 | Carbon Energy Limited | Method for shortening an injection pipe for underground coal gasification |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20140428 |