CN2030199U - Constant-pressure gas generator with fixed bed plate - Google Patents

Abstract

The utility model adopts advanced structures of a double coal lock, an air controlled conical valve and the transmission of a stepless speed regulating fire grate, etc. The coal charging and the ash discharging adopt a microcomputer to realize the self control of programs. The utility model which can gasify the fine coal has the advantages of high strength, good tightness, convenient operation and simple structure. Compared with the old type of the furnace, the utility model has energy saving, avoiding the environment pollution, and realizing the automatic control of a gas station.

Description

Constant-pressure gas generator with fixed bed plate

The utility model belongs to the gas generating unit class, is the improvement to present atmospheric fixed bed producer.

Weuman-Gacusha Gas producers has introduced the structure of the atmospheric fixed bed gas-producer of U.S. DraUo company exploitation, it is by coal, stirring and transmission rig thereof, and gasification body of heater (comprising fire grate and transmission rig thereof) and ash exhauster are formed.Coal mechanism is by coal bunker, forms to coal bin and material pipe, from coal bunker to giving the coal bin coal and from control for coal bin coal in expecting Guan Xianglu by disk valve.This coal mechanism is because of coal bunker and very big to the volume of coal bin, and material manages longlyer, so make body of heater huge (about 14 meters of body of heater height overall), increased the initial cost expense.In addition because valve seat and the gap between the valve disc very little (less than the 0.05mm) of disk valve, mechanical workout and installation error are difficult to guarantee requirement, therefore, coal gas can leak in disk valve uses, and when works better, giving the valve of coal bin and material pipe is normal open in addition, a large amount of coal gas can enter coal bunker, cause and leak seriously, cause environmental pollution, harmful health of human body.Stirring mechanism has the stirring cross bar of a hollow water-cooled formula, is welded with a lot of rake pawls on the bar, places during because of its work among the coal seam, and temperature is higher, so usually deform or leak, influences the works better of gas furnace.The fire grate transmission rig is by motor via reducer drivening rod mechanism, makes ratchet promote master wheel and realizes geneva motion, and this type of drive is to the bad adaptability of the working of a furnace.Ratchet is fragile simultaneously, can cause left alone without help stove fault.What ash exhauster adopted is upper and lower twice push-pull valve control, and because of push-pull valve seals difference thereby has a large amount of steam, ashes leaks, and not only influences the gasification result of gas furnace, but also can cause environmental pollution.

The purpose of this utility model is in order to overcome the shortcoming of existing Weuman-Gacusha gas furnace, to design a kind of novel gerotor type fixed bed coal gas producer.

The described coal mechanism that is characterised in that of the present utility model adorns a cylinder valve in the bottom of coal bunker, the cylinder valve is connected with two and the coal that connects lock, miter valve is arranged between them, two filling tubes of lower section expenditure of each coal lock, between each coal lock and the filling tube miter valve is arranged, improved sealing property.The cylinder valve is made up of shell, valve body, intubate, in order to prevent that fine coal from entering gap between cylinder and the shell and asphyxia by external pressure on the chest and abdomen cylinder valve, so valve body is the cylindrical tube that places a two ends band tapering among the shell, intubate is on valve body top, be sleeved on the endoporus place of cylinder valve inlet, the flange and the shell of intubate link.Described fire grate transmission rig is to have adopted dc speed-regulating motor to drive the transmission rig of conical gear, can realize stepless speed regulation according to the gasification situation in the stove.Described stirring mechanism is to change an original cross bar into two the horizontal paddles that mounting height is different, and some gasket rings are set on vertical rotation axis, stretches into height in the stove to regulate paddle, adapts to the stirring degree of depth of different coals.The section of stirring blade can be obtuse triangle.Described ash exhauster is between last ash bucket and ash bin miter valve to be housed, at grey lower box part installing turnover panel control valve, the turnover panel control valve is made up of rotary bracket, miter valve and power element, and miter valve is contained on the rotary bracket, carriage is connected with power element, and power element can be a cylinder.Described control device divides coal and two systems of ash discharge.The control device of coal is that the electric contact thermometer and the programmable controller that are located on the filling tube are joined, the automatic control device that programmable controller is joined and formed with the controlling elements of cylinder valve and three miter valves again.The control device of ash discharge is that the revolving counter that will be located at fire grate transmission axle head is connected with programmable controller, and programmable controller is locked valve, the following power element of the valve automatic control device that joins and form with ash again.Electric contact thermometer can be a thermocouple thermometer.Power element can be a cylinder.

The utility model is because miter valve control has been adopted in coal and ash discharge, so the good seal performance of stove, has guaranteed that not only furnace pressure is stable, improves gasification intensity and has improved environment greatly.Owing to adopted the double coal lock structure, make the material pipe shorten the body of heater height overall and reduce, thereby saved construction investment, novel atmospheric fixed bed gas-producer also has the stepless speed regulation performance of fire grate transmission and the automatic control of coal and ash discharge simultaneously.So novel producer gas generator compact construction, economical rationality, sealing is reliable, and free from environmental pollution, the level of automation height has alleviated working strength of workers.

Feature of the present utility model can also be illustrated by an embodiment in conjunction with the accompanying drawings.

Fig. 1 is a structural representation of the present utility model.

Coal mechanism and self-con-tained unit thereof:

Two coal locks (4) that bunker coal enters and connects by cylinder valve (2) from coal bunker (1), junction at cylinder valve and coal lock is provided with a miter valve, be called coal and lock the adding that valve (3) is controlled coal, the cylinder valve is made up of intubate (2-1) valve body (2-2) shell (2-3), set up intubate in the ingress, therefore fine coal is difficult for entering between shell and the valve body, if there is a small amount of fine coal to enter the gap, again because valve body is made the cylindrical tube of band tapering, fine coal also can fall smoothly, the unlikely phenomenon that causes stuck cylinder.The bunker coal that enters the coal lock is locked valve (5) down through two taper coals respectively, can enter in the stove through four filling tubes (6).When works better, three miter valves of cylinder valve and coal lock are all in the closed position.Than the time filled it up with coal in the coal lock, when vapourizing furnace needs coal, at first open two coals locks valve down, coal just enters in the stove by four material pipes and is full of the material pipe, closes valve under two coals locks then.Above-mentioned coal process can be automatic control, self-con-tained unit is by being located at the thermopair on the filling tube, because the coal in the stove is gasified, the bed of material descends, coal gas advances in the feeding pipe, make it temperature and rise, when temperature rose to a certain set-point, thermopair sent signal, give programmable controller (PC) then PC open coal lock valve down by power element-cylinder, beginning is coal in the material pipe, and coal is after preset time, and PC instruction coal lock valve down cuts out, PC instruction coal is locked valve then, the cylinder valve is opened in succession, i.e. coal in coal lock, coal lock fill it up with behind the coal (with controlling preset time) in succession closed drum valve and coal lock valve, finished a coal cycle.

Ash exhauster and self-con-tained unit thereof:

Miter valve of installing is called valve on the ash bin (12) between last ash bucket (11) and ash bin (13), and it is used for controlling lime-ash and enters ash bin by last ash bucket.Bottom at ash bin also is provided with flap valve, is that valve is controlled cindery discharging under the ash bin.Flap valve is made up of cylinder (16), rotary bracket (15), cone valve (14), and miter valve is installed on the rotary bracket, and carriage links to each other with the piston rod of cylinder.Self-con-tained unit is to send signal by the revolving counter that is located at fire grate transmission axle head, controls ash by (PC) and locks the Push And Release of valve and following valve and finish automatic removing dust.Because after coal for gasification is determined, the ash discharge amount that fire grate whenever circles is certain, just can determine according to the useful volume of ash bucket needs ash discharge after fire grate changes several commentaries on classics, with this fire grate revolution as definite value input programmable logic controller (PC), after recording given revolution by revolving counter, send signal by PC, the Push And Release that starts the upper and lower valve of ash discharge belt and vibrator control ash lock is simultaneously realized automatic removing dust.The fire grate transmission rig is to drive conical gear (10) by dc speed-regulating motor (9) through speed reduction unit to drive fire grate (8) and rotate, and can realize that stepless speed regulation satisfies the requirement of gasifying process.Stirring mechanism is that (7-1) goes up an increase gasket ring (7-2) on vertical rotation axis, regulate the height of paddle (7-3), adapt to the stirring degree of depth of different coals, horizontal paddle is contained in the rotating shaft lower end, be two different heights be the paddle in obtuse triangle cross section.

The drawing explanation:

1---coal bunker 2---cylinder valve

2-1---intubate 2-2---valve body

Coal is locked valve to 2-3---shell 3---

The coal lock is valve down for 4---coal locks 5---

6---material pipe 7---agitator

7-1---rotating shaft 7-2---gasket ring

7-3---paddle 8---fire grate

9---buncher 10---conical gear

11---going up ash bucket 12---valve on the ash bin

13---ash bin 14---valve under the ash bin

15---rotary bracket 16---cylinder

Claims (6)

1, a kind of atmospheric fixed bed gas-producer, by coal, stir, the fire grate transmission, ash exhauster and control device are formed, it is characterized in that described coal mechanism is at cylinder valve of coal bunker bottom installing, the cylinder valve is connected with two and the coal that connects lock, the taper control valve is arranged between them, two filling tubes of lower section expenditure of each coal lock, between coal lock and the filling tube taper control valve is arranged, the fire grate transmission rig is to have adopted dc speed-regulating motor to drive the transmission rig of conical gear, stirring mechanism has two horizontal paddles that mounting height is different, gasket ring is set on vertical rotation axis, ash exhauster is an installing taper control valve between last ash bucket and ash lock, (ash is locked valve) is that the electric contact thermometer and the programmable controller that are located on the filling tube are joined at the control device of ash lock bottom installing turnover panel control valve (valve under the ash lock) coal, the automatic control device that programmable controller is joined and formed with the power element of cylinder valve and three miter valves again, the control device of ash discharge is that the revolving counter and the programmable controller that are located at fire grate transmission axle head are joined, and programmable controller is locked valve with ash again, the automatic control device that the power element of following valve joins and forms.

2, according to the described atmospheric fixed bed gas-producer of claim 1, it is characterized in that described cylinder valve is made up of shell, valve body, intubate, valve body is the cylindrical tube that places a two ends band tapering among the shell, intubate is on valve body top, be the endoporus place that is sleeved on the cylinder valve inlet, the flange of intubate connects with shell.

3, according to the described atmospheric fixed bed gas-producer of claim 1, it is characterized in that described turnover panel control valve is made up of miter valve, rotary bracket, power element, miter valve is contained on the rotary bracket, and rotary bracket is connected on the power element.

4,, it is characterized in that described power element is meant cylinder according to claim 1 or 3 described atmospheric fixed bed gas-producers.

5,, it is characterized in that described electric contact thermometer is a thermocouple thermometer according to the described atmospheric fixed bed gas-producer of claim 1.

6, according to the described atmospheric fixed bed gas-producer of claim 1, the section that it is characterized in that described stirring blade is an obtuse triangle.

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