CN202125957U

CN202125957U - Boiler with automatic deashing function

Info

Publication number: CN202125957U
Application number: CN2011201967752U
Authority: CN
Inventors: 何秀锦
Original assignee: 何秀锦
Current assignee: Fengyang Haitaike Energy Environmental Management Services Co.,Ltd.
Priority date: 2011-06-03
Filing date: 2011-06-03
Publication date: 2012-01-25
Anticipated expiration: 2021-06-03

Abstract

A boiler with an automatic deashing function comprises a main flue and a plurality of heating surfaces which are arranged inside the main flue. The main flue is internally provided with a first division plate and a second division plate which are arranged in sequence along the flowing direction of smoke gas, wherein the first division plate divides the main flue into a first branch flue and a third branch flue which are parallel to each other; the second division plate divides the main flue into a second branch flue and a fourth branch flue which are parallel to each other; the plurality of heating surfaces are arranged in the first to the fourth branch flues; the smoke gas outlets or inlets of the first to the fourth branch flues are all provided with flue valves; the inlet and the outlet of the main flue are provided with a first thermometer and a third thermometer; a second thermometer is arranged between the first division plate and the second division plate; the first to the third thermometers are all connected with a controller; the controller is connected with a driving device; and the driving device is connected with the flue valves so as to drive the flue valves to open or close according to the judgment result of the controller. For the boiler with the automatic deashing function, automatic deashing of the heating surfaces can be realized, the operation and maintenance costs of the boiler are reduced and the safety and reliability of the boiler in operation are improved.

Description

Boiler with automatic ash removing function

Technical field

The utility model relates to a kind of boiler, relates in particular to a kind of boiler with automatic ash removing function.

Background technology

Along with the fast development of industrial society, boiler is used widely, and the dust stratification problem often takes place the heating surface of boiler.Ash content in the fuel can produce flying dust and get in the flue gas in combustion process, also possibly sneak into the dust that production technology produces in the flue gas of industrial furnaces such as cement, pottery, glass.After these flying dusts and dust enter into boiler along with flue gas, can be deposited on the heating surface of boiler, the heat transfer resistance of flue gas and heating surface increases, and the exhaust gas temperature of boiler increases, and heat loss due to exhaust gas increases, and boiler efficiency reduces.

The reset mode of existing boiler heating surface dust stratification comprises acoustic wave ash ejector, shock-wave ash blowing device, steam sootblower etc., and there is following problem in these purge modes: it is range limited to blow ash, has the deashing dead angle; Need consumption of compressed air, combustion gas, steam equal energy source medium; Cause violence to impact and corrosion to heating surface, influence the life-span of heating surface.Given this, boiler needs frequent blowing out, and the mode that adopts the water flushing is to the heating surface deashing, and the availability that this not only directly influences boiler also causes the corrosion of heating surface.

The utility model content

The purpose of the utility model is to provide a kind of boiler with automatic ash removing function, to solve the cost height that has the removing ash of boiler mode now and exist, the problem that influences boiler efficiency and heated surface corrosion.

To achieve these goals; The boiler with automatic ash removing function that the utility model provides comprises flue collector, a plurality of heating surface; Said a plurality of heating surface is located in the said flue collector, it is characterized in that, is provided with first demarcation strip and second demarcation strip that are provided with along the flow of flue gas direction successively in the said flue collector; Said first demarcation strip is divided into arranged side by side first minute flue and the 3rd fen flue with said flue collector; Said second demarcation strip is divided into arranged side by side second minute flue and the 4th fen flue with said flue collector, and said a plurality of heating surfaces are located in said first to fourth minute flue, and the exhanst gas outlet or the inlet of said first to fourth minute flue are provided with Flue valve; The inlet of said flue collector is provided with first thermometer; The outlet of said flue collector is provided with the 3rd thermometer; Be provided with second thermometer between said first demarcation strip and said second demarcation strip; Said first to the 3rd thermometer all be used for judging that according to the detection data of said first to the 3rd thermometer controller of said first to fourth minute flue generation dust stratification is connected; Said controller is connected with a drive unit, and said drive unit is connected with said Flue valve and drives said Flue valve with the judged result according to said controller and open or close.

According to above-mentioned a kind of preferred implementation with boiler of automatic ash removing function, wherein, the exhanst gas outlet of said first and the 3rd fen flue is provided with said Flue valve, and the gas approach of said second and the 4th fen flue is provided with said Flue valve.

According to above-mentioned a kind of preferred implementation with boiler of automatic ash removing function, wherein, the import of said flue collector also is respectively arranged with the flue gas pressures table to monitor the pressure of said flue collector with outlet, and said flue gas pressures table is connected with said controller.

The utility model can be realized the deashing of heating surface through the switching of adjustment gas fume valve, reduced boiler operation expense, improved the security and stability of boiler operatiopn.In addition, the design of the flue structure of the utility model does not exist blows grey dead angle problem, and deashing is thorough, can effectively improve the utilization rate of heating surface and reduce exhaust gas temperature, raising boiler efficiency.

Description of drawings

Fig. 1 is the structural representation of the flue collector of the utility model preferred embodiment;

Fig. 2 is the utility model preferred embodiment one user mode reference diagram.

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is explained further details.

Fig. 1 and Fig. 2 show the reference diagram of one of schematic structure and user mode of the utility model preferred embodiment; Shown in the two; This preferred embodiment comprises flue collector 9 and a plurality of

heating surfaces

3,10, and flue collector 9 comprises flue collector import 2 and flue collector outlet 11, and flue collector 9 is inverted U-shaped;

Flue demarcation strip

18 and 15 along the flow direction of flue gas be located at flue collector 9 about in two sections, two sections below is equipped with ash discharging hole 13 about flue collector 9.In Fig. 1 and Fig. 2, arrow 1 expression gets into the hot flue gas of flue collector, and arrow 12 expressions are through the cold flue gas of heat exchange, and hollow arrow is represented the flow direction of flue gas.

Flue is cut apart plate 18 flue collector 9 in left side has been divided into branch flue 17 and has divided flue 19, divides the exhanst gas outlet of

flue

17,19 that

Flue valve

4,5 is set respectively.Flue is cut apart plate 15 flue collector 9 on right side has been divided into branch flue 14 and has divided flue 16, divides the smoke inlet of

flue

14,16 that

Flue valve

8,7 is set respectively.

The smoke inlet side of

branch flue

17,19 is provided with flue-gas temperature meter 21, the exhanst gas outlet side is provided with flue-gas temperature meter 6, divides the exhanst gas outlet side of

flue

14,16 that flue-gas temperature meter 20 is set.

Thermometer

6,20,21 all is connected with a controller (not shown), and this controller is used for judging that according to the temperature data of

thermometer

6,20,21 detected diverse

locations dividing flue

17,19 that dust stratification has taken place still divides

flue

14,16 that dust stratification has taken place.This controller also is connected with a drive unit, and this drive unit is connected with

Flue valve

4,5,7,8, and accepts the control of this controller, drives

Flue valve

4,5,7,8 according to the judged result of controller and opens or closes.The Flue valve of using in the driving of the

Flue valve

4,5,7,8 of the utility model and manner of execution and the field of boilers at present is identical; But purposes is different; For example a plurality of Flue valves 4 can be connected with the output shaft of a motor through one or four connecting rod structures; Motor is as drive unit, and the rotation of motor output shaft drives Flue valve 4 and in certain angle, swings, and realizes the opening and closing of Flue valve 4 whereby.In addition, utilize controller judgement numerical values recited and send the technology that control signal also can obviously be known by inference for those skilled in the art to drive unit in view of the above, repeat no more at this.

Flue collector import 2 is provided with chimney intake Pressure gauge 23, exports 11 flue outlet Pressure gauges 22 at flue collector, the pressure condition of monitoring flue, and inlet pressure gauge 23, delivery gauge 22 all are connected with controller, and boiler is implemented pressure protect.For example: if the reading of delivery gauge 22 is low excessively, forbid

Flue valve

4,5,7,8 is closed, avoid the burner hearth internal negative pressure of boiler low excessively, boiler is damaged.Also be; Controller is at first judged the numerical value of inlet pressure gauge 23, delivery gauge 22; When the numerical value of two

Pressure gauges

22,23 is lower than common institute permissible level; Even

thermometer

6,20,21 has shown in

branch flue

14,16 or 17,19 dust stratification takes place, controller can not cut out a

certain valve

4,5,7,8 yet.As shown in Figure 2; In application; If flue-gas temperature meter 21 detected flue-gas temperatures do not raise, and flue-gas temperature meter 6 detected flue-gas temperature values raise, and explain that dust stratification takes place the heating surface 3 in the

branch flue

17,19; Controller receives the temperature data of

thermometer

6,21 and judges that the difference of the two has surpassed setting value; Controller sends control signal makes drive unit close branch Flue valve 4, open and divide Flue valve 5, increases the flue gas flow rate that flue gas passes branch flue 19, realizes the deashing to minute flue 19 internal heating surfaces 3; Open branch Flue valve 4 subsequently, close branch Flue valve 5, increase the flue gas flow rate that flue gas passes branch flue 17, realize deashing minute flue 17 internal heating surfaces 3.When

thermometer

6,21 detected flue-gas temperatures meet normal temperature, controller judges that deashing finishes, and sends control signal and makes drive unit keep dividing a

Flue valve

4 and 5 to be in opening.

Flue-gas temperature meter 20 detected flue-gas temperature values raise if flue-gas temperature meter 6 detected temperature values do not raise; Explain that dust stratification takes place heating surface 10; Can close branch Flue valve 7, open and divide Flue valve 8; Increase the flue gas flow rate that flue gas passes branch flue 14, realize deashing this minute flue 14 internal heating surfaces 10; Open branch Flue valve 7 subsequently, close branch Flue valve 8, increase the flue gas flow rate that flue gas passes branch flue 16, realize deashing minute flue 16 internal heating surfaces 10.After deashing finishes, keep dividing

Flue valve

7 and 8 to be in opening.

In sum; The utility model is through being provided with the flue demarcation strip and dividing Flue valve in the flue collector of boiler, and divides in difference and to cooperate open and close between the Flue valve, increases the flow velocity that flue gas passes corresponding heating surface; Realize the deashing of heating surface; Do not need consumption of compressed air, combustion gas, steam equal energy source medium, only realize the deashing of heating surface through the switching of adjustment gas fume valve, reduced boiler operation expense, improved the security and stability of boiler operatiopn.In addition, the design of the flue structure of the utility model does not exist blows grey dead angle problem, and deashing is thorough, can effectively improve the utilization rate of heating surface, effectively reduces exhaust gas temperature, improves boiler efficiency.

Can know that by technological general knowledge the utility model can be realized through other the embodiment that does not break away from its spirit or essential feature.Therefore, above-mentioned disclosed embodiment with regard to each side, all just illustrates, and is not only.All in the utility model scope or the change that is being equal in the scope of the utility model all comprised by the utility model.

Claims

1. boiler with automatic ash removing function; Comprise flue collector, a plurality of heating surface; Said a plurality of heating surface is located in the said flue collector, it is characterized in that, is provided with first demarcation strip and second demarcation strip that are provided with along the flow of flue gas direction successively in the said flue collector; Said first demarcation strip is divided into arranged side by side first minute flue and the 3rd fen flue with said flue collector; Said second demarcation strip is divided into arranged side by side second minute flue and the 4th fen flue with said flue collector, and said a plurality of heating surfaces are located in said first to fourth minute flue, and the exhanst gas outlet or the inlet of said first to fourth minute flue are provided with Flue valve;

The inlet of said flue collector is provided with first thermometer; The outlet of said flue collector is provided with the 3rd thermometer; Be provided with second thermometer between said first demarcation strip and said second demarcation strip; Said first to the 3rd thermometer all be used for judging that according to the detection data of said first to the 3rd thermometer controller of said first to fourth minute flue generation dust stratification is connected; Said controller is connected with a drive unit, and said drive unit is connected with said Flue valve and drives said Flue valve with the judged result according to said controller and open or close.

2. the boiler with automatic ash removing function according to claim 1 is characterized in that, the exhanst gas outlet of said first and the 3rd fen flue is provided with said Flue valve, and the gas approach of said second and the 4th fen flue is provided with said Flue valve.

3. the boiler with automatic ash removing function according to claim 1 is characterized in that, the import of said flue collector also is respectively arranged with the flue gas pressures table to monitor the pressure of said flue collector with outlet, and said flue gas pressures table is connected with said controller.