CN212644666U

CN212644666U - Hot primary air system of adjacent boiler of coal-fired boiler

Info

Publication number: CN212644666U
Application number: CN202020548352.1U
Authority: CN
Inventors: 刘定鳌; 张光兴; 邹胜龙; 张松
Original assignee: Guizhou Huadian Tongzi Power Generation Co Ltd
Current assignee: Guizhou Huadian Tongzi Power Generation Co Ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2021-03-02
Anticipated expiration: 2030-04-14

Abstract

The utility model discloses an adjacent hot primary air system of stove of coal fired boiler, adjacent hot primary air system of stove of coal fired boiler includes main part mechanism, closing mechanism and combustion-supporting mechanism, main part mechanism junction fixed mounting has the closing mechanism, closing mechanism one side fixed mounting has combustion-supporting mechanism, main part mechanism comprises a boiler, a wind channel, No. two boilers, No. two wind channels and connecting pipe, a wind channel of boiler top fixedly connected with, No. two boilers are located boiler one side. The utility model discloses an isolation door and No. two isolation doors can be closed respectively and open according to the user demand, can make a boiler and No. two boilers use alone like this, and both are not infected with each other, avoid causing a wind rate to leak the too big influence unit load capacity to the operation boiler, also make boiler burning stability more simultaneously to safety more when the boiler overhauls of stopping transport.

Description

Hot primary air system of adjacent boiler of coal-fired boiler

Technical Field

The utility model relates to a combustion-supporting equipment technical field specifically is a hot primary air system of adjacent stove of coal fired boiler.

Background

Two unit hot primary air ducts pass through the communication of connecting pipe UNICOM, under a unit operational aspect, adopt the hot-blast coal pulverizer of adjacent stove before another unit start in-process coal pulverizer starts, improve coal pulverizer export wind powder temperature, satisfy the coal pulverizer and start the needs, have important meaning to the combustion of catching fire of the initial stage buggy fast and stable that starts the stove ignition, the coal pulverizer start-up time shortens, reduces fuel consumption, especially is showing anthracite boiler energy-saving effect and economic benefits.

However, the existing adjacent boiler hot primary air system of the coal-fired boiler has the following disadvantages in the use process:

1. the existing adjacent boiler primary hot air system of the coal-fired boiler is only provided with a separation door and an adjusting door at the side of a primary hot air pipe of a boiler in the using process, if the door has defects, the treatment can be carried out only by stopping the double boilers completely, and the use is very inconvenient.

2. When an existing adjacent boiler primary hot air system of a coal-fired boiler is used, when a first boiler stops running and a second boiler runs, if air leakage occurs in a communicating air pipe, the primary air pressure of the second boiler is low, so that unstable combustion and flameout are not caused, the coal blocks in the boiler are not sufficiently combusted, and the adjacent boiler primary hot air system is poor in energy conservation and environmental protection.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adjacent hot primary air system of stove of coal fired boiler, with solve the present adjacent hot primary air system of stove of coal fired boiler in the above-mentioned background art and only be equipped with one in the on-the-spot wind pipe side of boiler heat and remove isolation door and adjustment door, if there is a defect in this door, need the duplex to stop completely and just can handle, use very inconvenient, the adjacent hot primary air system of stove of coal fired boiler of current is in the use, when the second boiler stove of boiler shutdown operation, if the air leakage appears in the contact tuber pipe, can cause the low unstable that arouses the flameout non-outage of burning of a wind risk of a wind pressure of No. two boilers, and the burning of coal cinder is insufficient in the boiler, use the relatively poor problem of energy-concerving and environment-protective.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an adjacent hot primary air system of stove of coal fired boiler, adjacent hot primary air system of stove of coal fired boiler includes main part mechanism, closing mechanism and combustion-supporting mechanism, main part mechanism junction fixed mounting has the closing mechanism, closing mechanism one side fixed mounting has combustion-supporting mechanism.

Preferably, the main body mechanism comprises a boiler, an air duct, a boiler, an air duct and a connecting pipe, the boiler is fixedly connected with the air duct at the top of the boiler, the boiler is located on one side of the boiler, the air duct is fixedly connected with the top of the boiler, the air duct is connected with the air duct through the connecting pipe, and the air duct is connected with the air duct through the connecting pipe, so that the boiler can be communicated with the boiler, and the boiler can convey hot primary air into the boiler.

Preferably, the closing mechanism comprises an isolation door, No. two isolation doors and adjusting door, the fixed adjusting door that is provided with in isolation door one side, an isolation door and adjusting door all are located a connecting pipe one end, No. two isolation doors are located the connecting pipe other end, can adjust the air volume of connecting the pipe through the adjusting door, and when maintaining a boiler and No. two boilers simultaneously, can close an isolation door and No. two isolation doors, can make a boiler and No. two boilers use alone like this, and both are not infected with each other, when the unit operation, avoid isolation door and adjusting door to close not tightly, cause once the amount of wind to leak to the operation boiler and greatly influence unit load capacity, also make boiler burning more stable simultaneously, will effectively promote the security when stopping transport boiler and overhauing.

Preferably, combustion-supporting mechanism comprises three-way pipe, No. three insulated door, suction pump and filter mantle, three-way pipe fixed mounting is in the connecting pipe middle part, three-way pipe one side fixedly connected with insulated door, No. three insulated door one side fixedly connected with suction pump, suction pump one side fixedly connected with filter mantle opens No. three insulated door, pours into the coal ash into the pipeline into through the suction pump in to add the coal ash in making hot primary air, can play combustion-supporting effect, make coal burning more abundant.

Preferably, an isolation door, No. two isolation doors and No. three isolation doors comprise valve plate, gear, pneumatic telescopic rod and rack, the equal activity of an isolation door, No. two isolation doors and No. three isolation door inner chambers is provided with the valve plate, the valve plate top is all through pivot fixedly connected with gear, the equal interlock in gear one side is connected with the rack, the pneumatic telescopic rod of rack one end fixedly connected with drives the rack through controlling pneumatic telescopic rod and stretches out and draws back to accessible rack promotion gear rotates, makes the valve plate open or closed, makes opening and closed more convenient to an isolation door, No. two isolation doors and No. three isolation doors.

Preferably, the adjustment door comprises regulating plate, worm wheel, worm and hand wheel, the regulating plate is located the adjustment door inner chamber, the adjustment door top is through pivot fixedly connected with worm wheel, worm wheel one side interlock is connected with the worm, worm one end fixedly connected with hand wheel rotates the hand wheel, and the accessible worm drives the worm wheel and rotates to can make the regulating plate deflect, wherein worm wheel and worm mutually support, have auto-lock nature, thereby can effectively avoid the regulating plate to take place the displacement, make air volume control more accurate.

The utility model provides an adjacent stove hot primary air system of coal fired boiler possesses following beneficial effect:

(1) the utility model discloses a ventilation capacity that the adjustment door can be managed even is adjusted, simultaneously when maintaining a boiler and No. two boilers, can carry out the closure to an isolation door and No. two isolation doors, can make a boiler and No. two boilers use alone like this, both do not infect each other, when the unit operation, avoid isolation door and accent door to close when not tight, cause once the amount of wind to leak to the operation boiler and greatly influence the unit and take the load capacity, also make boiler combustion more stable simultaneously, security when will effectively promote the outage boiler and overhaul.

(2) The utility model discloses open No. three insulated doors, pour into the pipeline with coal ash through the aspiration pump in to it has coal ash to add in the wind to make hot primary air, can play combustion-supporting effect, makes more abundant of coal burning, and the filter mantle can filter coal ash simultaneously.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the isolation door of the present invention;

FIG. 3 is a schematic view of the adjusting door of the present invention;

fig. 4 is a schematic structural diagram of the combustion-supporting mechanism of the present invention.

In the figure: 1. a main body mechanism; 101. a first boiler; 102. a first air duct; 103. a second boiler; 104. a second air duct; 105. connecting pipes; 2. a sealing mechanism; 201. an isolation gate No. one; 202. a second isolation gate; 203. adjusting the door; 3. a combustion-supporting mechanism; 301. a three-way pipe; 302. a third isolation gate; 303. a suction pump; 304. a filter housing; 4. a valve plate; 401. a gear; 402. a pneumatic telescopic rod; 403. a rack; 5. an adjusting plate; 501. a worm gear; 502. a worm; 503. a handwheel.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-4, the utility model provides a technical solution: the utility model provides an adjacent hot primary air system of stove of coal fired boiler, adjacent hot primary air system of stove of coal fired boiler includes main part mechanism 1, closing mechanism 2 and combustion-supporting mechanism 3, 1 junction fixed mounting of main part mechanism has closing mechanism 2, 2 one side fixed mounting of closing mechanism has combustion-supporting mechanism 3.

Main part mechanism 1 comprises boiler 101, an air duct 102, No. two boilers 103, No. two air ducts 104 and connecting pipe 105, an air duct 102 of boiler 101 top fixedly connected with, No. two boilers 103 are located a boiler 101 one side, No. two air ducts 104 of No. two boiler 103 top fixedly connected with, No. two air ducts 104 and an air duct 102 connect through connecting pipe 105, and an air duct 102 and an air duct 104 connect through connecting pipe 105 to can communicate boiler 101 and No. two boilers 103, thereby can make boiler 101 with hot primary air transport in No. two boilers 103.

Sealing mechanism 2 comprises isolator 201, No. two isolator 202 and adjustment door 203, isolator 201 one side is fixed to be provided with adjustment door 203, isolator 201 and adjustment door 203 all are located connecting 105 one ends, No. two isolator 202 are located connecting 105 other ends, can adjust the air flow of connecting 105 through adjustment door 203, and when maintaining a boiler 101 and No. two boilers 103 simultaneously, can close isolator 201 and No. two isolator 202, can make a boiler 101 and No. two boilers 103 use alone like this, and both do not infect each other, when the unit operation, avoid isolator and adjustment door to close not tight, cause once the amount of wind to leak to the operation boiler and greatly influence the unit and take the load capacity, also make boiler burning more stable simultaneously, security when will effectively promote the boiler maintenance of stopping transport.

Combustion-supporting mechanism 3 comprises three-way pipe 301, No. three isolator 302, suction pump 303 and filter mantle 304, three-way pipe 301 fixed mounting is in connecting pipe 105 middle part, three-way pipe 301 one side fixedly connected with isolator 302 No. three, No. three isolator 302 one side fixedly connected with suction pump 303, suction pump 303 one side fixedly connected with filter mantle 304 opens No. three isolator 302, pours into the pipeline into with the coal ash through suction pump 303 in to it has the coal ash to add in the wind of heat, can play combustion-supporting effect, makes coal burning more abundant, and filter mantle 304 can filter the coal ash simultaneously, avoids large granule coal ash to enter into the combustion chamber.

An isolation door 201, No. two isolation doors 202 and No. three isolation door 302 constitute by valve plate 4, gear 401, pneumatic telescopic rod 402 and rack 403, an isolation door 201, No. two isolation doors 202 and No. three isolation door 302 inner chambers all activity is provided with valve plate 4, valve plate 4 top all is through pivot fixedly connected with gear 401, the equal interlock in gear 401 one side is connected with rack 403, rack 403 one end fixedly connected with pneumatic telescopic rod 402 drives rack 403 through control pneumatic telescopic rod 402 and stretches out and draws back to accessible rack 403 promotes gear 401 and rotates, makes valve plate 4 open or closed, makes opening and closing more convenient to an isolation door 201, No. two isolation doors 202 and No. three isolation doors 302.

Adjusting door 203 comprises regulating plate 5, worm wheel 501, worm 502 and hand wheel 503, regulating plate 5 is located the adjusting door 203 inner chamber, adjusting door 203 top is through pivot fixedly connected with worm wheel 501, the interlock of worm wheel 501 one side is connected with worm 502, worm 502 one end fixedly connected with hand wheel 503 rotates hand wheel 503, and accessible worm 502 drives worm wheel 501 and rotates to can make regulating plate 5 deflect, wherein worm wheel 501 and worm 502 mutually support, have auto-lock nature, thereby can effectively avoid regulating plate 5 to take place the displacement, make the more accurate of air volume control.

It should be noted that, in the coal-fired boiler adjacent boiler hot primary air system, when in work, the first air channel 102 and the second air channel 104 are connected through the connecting pipe 105, so that the first boiler 101 and the second boiler 103 can be communicated, so that the first boiler 101 can convey hot primary air into the second boiler 103, the ventilation quantity of the connecting pipe 105 can be adjusted through the adjusting door 203, and meanwhile, when the first boiler 101 and the second boiler 103 are maintained, the first isolating door 201 and the second isolating door 202 can be closed, so that the first boiler 101 and the second boiler 103 can be independently used, the first boiler 101 and the second boiler 103 are not infected with each other, when a single machine runs, the situation that the isolating door and the adjusting door are not tightly closed is avoided, the situation that the load capacity of a unit is greatly influenced by the leakage of primary air quantity of the running boiler is avoided, the boiler combustion is more stable, and the safety when the running boiler is stopped for maintenance is effectively improved, open No. three dodge gate 302, inject into the pipeline with the coal ash through the suction pump 303 in, thereby it has the coal ash to add in the wind of heat, can play combustion-supporting effect, make the coal burning more abundant, simultaneously filter mantle 304 can filter the coal ash, wherein, drive rack 403 through control pneumatic telescopic link 402 and stretch out and draw back, thereby accessible rack 403 promotes gear 401 and rotates, make valve plate 4 open or closed, make to dodge gate 201, opening and closing more convenient of No. two dodge gates 202 and No. three dodge gate 302, rotate hand wheel 503, accessible worm 502 drives worm wheel 501 and rotates, thereby can make regulating plate 5 deflect, wherein worm wheel 501 and worm 502 mutually support, have the auto-lock nature, thereby can effectively avoid regulating plate 5 to take place the displacement, make the more accurate of air volume control.

The suction pump 303 of the type C3-L148B is a prior art product and will not be described in detail herein.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hot primary air system of coal fired boiler adjacent thereto which characterized in that: the adjacent boiler hot primary air system of the coal-fired boiler comprises a main body mechanism (1), a sealing mechanism (2) and a combustion-supporting mechanism (3), wherein the sealing mechanism (2) is fixedly installed at the joint of the main body mechanism (1), and the combustion-supporting mechanism (3) is fixedly installed on one side of the sealing mechanism (2).

2. The adjacent furnace hot primary air system of the coal-fired boiler as claimed in claim 1, wherein: main part mechanism (1) comprises boiler (101), wind channel (102), No. two boiler (103), No. two wind channels (104) and connecting pipe (105), wind channel (102) of boiler (101) top fixedly connected with, No. two boiler (103) are located boiler (101) one side, No. two wind channels (104) of boiler (103) top fixedly connected with, No. two wind channels (104) and wind channel (102) are connected through connecting pipe (105).

3. The adjacent furnace hot primary air system of the coal-fired boiler as claimed in claim 1, wherein: sealing mechanism (2) comprise isolation door (201), No. two isolation doors (202) and adjustment door (203), fixed adjustment door (203) that is provided with in isolation door (201) one side, isolation door (201) and adjustment door (203) all are located and are managed (105) one end even, No. two isolation doors (202) are located and are managed (105) the other end even.

4. The adjacent furnace hot primary air system of the coal-fired boiler as claimed in claim 1, wherein: the combustion-supporting mechanism (3) comprises a three-way pipe (301), a third isolating door (302), a suction pump (303) and a filter cover (304), wherein the three-way pipe (301) is fixedly installed in the middle of the connecting pipe (105), the third isolating door (302) is fixedly connected to one side of the three-way pipe (301), the suction pump (303) is fixedly connected to one side of the third isolating door (302), and the filter cover (304) is fixedly connected to one side of the suction pump (303).

5. The adjacent furnace hot primary air system of the coal-fired boiler as claimed in claim 3, wherein: no. one isolation door (201), No. two isolation door (202) and No. three isolation door (302) constitute by valve plate (4), gear (401), pneumatic telescopic rod (402) and rack (403), No. one isolation door (201), No. two isolation door (202) and No. three isolation door (302) inner chamber all activity is provided with valve plate (4), valve plate (4) top all is through pivot fixedly connected with gear (401), gear (401) one side all the interlock is connected with rack (403), rack (403) one end fixedly connected with pneumatic telescopic rod (402).

6. The adjacent furnace hot primary air system of the coal-fired boiler as claimed in claim 3, wherein: adjusting door (203) comprises regulating plate (5), worm wheel (501), worm (502) and hand wheel (503), regulating plate (5) are located adjusting door (203) inner chamber, adjusting door (203) top is through pivot fixedly connected with worm wheel (501), worm wheel (501) one side interlock is connected with worm (502), worm (502) one end fixedly connected with hand wheel (503).