CN211902955U

CN211902955U - Air supply system of boiler

Info

Publication number: CN211902955U
Application number: CN202020400011.XU
Authority: CN
Inventors: 郑遂军; 朱正荣; 黄赣闽; 刘海荣; 石健水
Original assignee: SHANGHAI CHENGTOU YINGZHOU DOMESTIC GARBAGE DISPOSAL CO Ltd
Current assignee: SHANGHAI CHENGTOU YINGZHOU DOMESTIC GARBAGE DISPOSAL CO Ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2020-11-10
Anticipated expiration: 2030-03-25

Abstract

The utility model relates to a boiler air supply system, relating to the technical field of boilers, comprising an air blower, a burner and a boiler which are connected in sequence, wherein an air preheating box is arranged between the air blower and the burner, an air inlet pipe and an air outlet pipe are arranged on the air preheating box, a heating pipe is arranged in the air preheating box, a blow-off pipe is fixedly connected on the boiler, an inlet pipe fixedly connected with the water outlet end of the blow-off pipe is fixedly connected on the water inlet of the heating pipe, a purifying pipe is fixedly connected on the water inlet end of the inlet pipe and the water outlet end of the blow-off pipe together, the purifying pipe comprises a first main pipe fixedly connected with the water outlet end of the, the branch pipeline is communicated with the water outlet end of the main pipeline I, the main pipeline II is communicated with the water outlet end of the branch pipeline and is fixedly connected with the water inlet end of the water inlet pipe, and a filter plate and an active carbon adsorption plate are fixedly connected in sequence in the main pipeline II along the water flow direction. The utility model discloses the incrustation scale that has reducible heating tube inner wall to this guarantees heating tube heat exchange efficiency's effect.

Description

Air supply system of boiler

Technical Field

The utility model belongs to the technical field of the technique of boiler and specifically relates to a boiler air supply system is related to.

Background

The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, and the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy.

The existing Chinese patent with publication number CN201462889U discloses a novel boiler air supply system, which comprises a boiler, a burner and an air blower, wherein the burner and the air blower are sequentially connected with the boiler, and an air preheating device is connected at an air inlet or an air outlet of the air blower; the air preheating device comprises a shell, wherein a water inlet, a water outlet, an air inlet and an air outlet are formed in the shell, the air inlet is connected with an air outlet of the air blower, the air outlet is connected with the burner, a serpentine heating pipe is arranged in the shell, and two ports of the heating pipe are respectively connected with the water inlet and the water outlet; the boiler is provided with a blow-off pipe which is connected with the water inlet; the air preheating device comprises a shell, a water inlet, a water outlet, an air inlet and an air outlet are arranged on the shell, the air outlet is connected with an air inlet of the air blower, a serpentine heating pipe is arranged in the shell, and two ports of the heating pipe are respectively connected with the water inlet and the water outlet; the boiler is provided with a blow-off pipe which is connected with the water inlet.

The above prior art solutions have the following drawbacks: the sewage in the boiler contains impurities; when the heating pipe circulates sewage for a long time, impurities in the sewage are easy to adhere to the inner wall of the heating pipe; scale is formed on the inner wall of the heating tube over time, thereby reducing the heat exchange efficiency of the heating tube.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a boiler air supply system, it has the incrustation scale of reducible heating tube inner wall to this guarantees heating pipe heat exchange efficiency's effect.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a boiler air supply system comprises an air blower, a burner and a boiler which are connected in sequence, wherein an air preheating box is arranged between the air blower and the burner, an air inlet pipe fixedly connected with the air outlet end of the air blower is arranged on the air preheating box, an air outlet pipe fixedly connected with the air inlet end of the burner is arranged on the air preheating box, a heating pipe is arranged in the air preheating box, the two ends of the heating pipe are respectively provided with a water inlet and a water outlet, a blow-off pipe is fixedly connected to the boiler, a water inlet pipe fixedly connected with the water outlet end of the blow-off pipe is fixedly connected to the water inlet of the heating pipe, a purifying pipe is fixedly connected to the water inlet end of the water inlet pipe and the water outlet end of the blow-off pipe together, the purifying pipe comprises a first main pipe fixedly connected with the water outlet end of the blow-off pipe, a branch pipe communicated with the water outlet end of the first main pipe, and a second main pipe, and a filter plate and an active carbon adsorption plate are fixedly connected in sequence along the water flow direction in the main pipeline II.

By adopting the technical scheme, when in use, the air is preheated by the air blower through the air preheating box, and the preheated air enters the combustor, so that the air supply temperature is increased, and the combustion efficiency of the combustor is improved; sewage in the boiler flows into the heating pipe through the sewage discharge pipe, and air in the air preheating box is heated by using waste heat of the sewage, so that an air supply system can save more energy; when sewage flows, the sewage sequentially passes through the main pipeline I, the branch pipeline and the main pipeline II, and when the sewage passes through the main pipeline II, the filtering plate firstly filters the sewage, so that larger impurities in the water can be removed; when the filtered sewage passes through the activated carbon adsorption plate, the activated carbon adsorption plate can remove micro impurities in the sewage; the water after the purification is accomplished flows to the heating pipe through the inlet tube in order to carry out the preheating of air to the problem that the impurity in the reducible sewage easily adheres to and easily forms the incrustation scale on the inner wall of heating pipe has guaranteed the heat exchange efficiency of heating pipe.

The present invention may be further configured in a preferred embodiment as: and the branch pipeline is fixedly connected with a water baffle positioned in the water outlet direction of the main pipeline I.

Through adopting above-mentioned technical scheme, when the sewage in trunk line one flowed to the tributary pipe place position, because the breakwater can be with sewage interception to make sewage flow to in the tributary pipe, impurity in the sewage can partly deposit in the bottom of tributary pipe under the effect of gravity, thereby reduce the impurity in the sewage.

The present invention may be further configured in a preferred embodiment as: the side face, close to the main pipeline I, of the water baffle is an arc-shaped face.

By adopting the technical scheme, the surface of the water baffle is arranged to be an arc-shaped surface, when sewage flows out of the main pipeline, the sewage flows to the arc-shaped surface of the water baffle and flows to the branch pipeline along the arc-shaped surface of the water baffle; the water quantity of the backflow after the backflow is contacted with the water baffle is reduced, and the water delivery efficiency is improved.

The present invention may be further configured in a preferred embodiment as: the bottom of the branch pipeline is provided with a cleaning bucket.

Through adopting above-mentioned technical scheme, the impurity after the filter filters falls in the clearance fill under the effect of gravity to the collection of impurity has been made things convenient for.

The present invention may be further configured in a preferred embodiment as: the cleaning bucket comprises a connecting part in threaded connection with the bottom of the branch pipeline and a slag collecting part communicated with the connecting part.

Through adopting above-mentioned technical scheme, will clear up to fight and establish to the combination of connecting portion and collection sediment portion, collection sediment portion is used for concentrating and collects impurity, connecting portion and branch pipeline threaded connection to this has made things convenient for the dismantlement and the installation between clearance fill and the branch pipeline, thereby has made things convenient for the clearance of interior debris of clearance fill.

The present invention may be further configured in a preferred embodiment as: an observation plate is fixedly connected to the slag collecting part.

Through adopting above-mentioned technical scheme, can see the content of impurity in the sediment portion of gathering clearly comparatively directly perceivedly through observing the board to this makes things convenient for operating personnel in time to clear up the clearance fill, guarantees the normal clear of filtering work.

The present invention may be further configured in a preferred embodiment as: the heating pipe is a snake-shaped heating pipe.

Through adopting above-mentioned technical scheme, the circulation distance in the snakelike heating pipe extension air preheating cabinet in the sewage, heat exchange between extension sewage and the air has improved the air preheating effect to this combustion efficiency who has promoted the combustor.

The present invention may be further configured in a preferred embodiment as: the periphery of the sewage draining pipe and the water inlet pipe are coated with heat insulation cotton.

Through adopting above-mentioned technical scheme, the heat preservation cotton has better heat preservation effect, and the temperature of entering heating pipe sewage is guaranteed to the calorific loss that reducible sewage produced when blow off pipe and inlet tube to this preheating effect of having guaranteed the air preheating cabinet.

To sum up, the utility model discloses a following at least one useful technological effect:

the sewage is purified by the filter plate and the activated carbon adsorption plate, and the purified water flows into the heating pipe through the water inlet pipe to preheat air, so that the problem that impurities in the sewage are easily adhered to the inner wall of the heating pipe to easily form scale can be solved, and the heat exchange efficiency of the heating pipe is ensured;

the cleaning bucket is set to be a combination of a connecting part and a slag collecting part, the slag collecting part is used for collecting impurities in a centralized manner, and the connecting part is in threaded connection with the branch pipeline, so that the disassembly and the assembly between the cleaning bucket and the branch pipeline are facilitated, and the cleaning of impurities in the cleaning bucket is facilitated;

can see the content of impurity in the collection sediment portion more directly perceivedly through observing the board to this makes things convenient for operating personnel in time to clear up the clearance fill, guarantees the normal clear of filtering work.

Drawings

Fig. 1 is a schematic structural diagram of the embodiment.

FIG. 2 is a schematic diagram of an embodiment of the present invention for highlighting the air preheating effect.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Reference numerals: 1. a blower; 2. a combustion engine; 3. a boiler; 31. a blow-off pipe; 311. heat preservation cotton; 4. an air preheating box; 41. an air inlet pipe; 411. an air outlet pipe; 42. heating a tube; 421. a water inlet; 422. a water outlet; 423. a water inlet pipe; 5. a purge tube; 51. a first main pipeline; 52. branch pipelines; 521. a water baffle; 53. a main pipeline II; 531. a filter plate; 532. an activated carbon adsorption plate; 54. cleaning the bucket; 541. a connecting portion; 542. a slag collecting part; 543. and (4) observing the plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a boiler air supply system, include air-blower 1, combustor 2 and the boiler 3 of connecting in order along gas conveying direction, be equipped with air preheating cabinet 4 between air-out end of air-blower 1 and the air inlet end of combustor 2. An air inlet pipe 41 is fixedly connected to the air preheating box 4, an air inlet end of the air inlet pipe 41 is fixedly connected with an air outlet end of the air blower 1, an air outlet pipe 411 is also fixedly connected to the air preheating box 4, and an air outlet end of the air outlet pipe 411 is fixedly connected with an air inlet end of the burner 2. A heating pipe 42 is arranged in the air preheating box 4, the heating pipe 42 is a serpentine heating pipe 42, and two ends of the heating pipe 42 are respectively connected with the water inlet 421 and the water outlet 422.

Referring to fig. 1 and 2, a sewage discharge pipe 31 is fixedly connected to the boiler 3, a water inlet pipe 423 is fixedly connected to a water inlet 421 of the heating pipe 42, and heat insulation cotton 311 is wrapped around the sewage discharge pipe 31 and around the water inlet pipe 423. When the air preheating device is used, the air blower 1 preheats air through the air preheating box 4, the preheated air enters the combustor 2, the air supply temperature is improved, and therefore the combustion efficiency of the combustor 2 is improved; when in preheating, sewage in the boiler 3 flows into the heating pipe 42 through the sewage discharge pipe 31, and the air in the air preheating box 4 is heated by using the waste heat of the sewage, so that the air supply system can save more energy; meanwhile, the heat insulation cotton 311 has a good heat insulation effect, so that the heat loss generated when the sewage passes through the sewage discharge pipe 31 and the water inlet pipe 423 can be reduced, and the temperature of the sewage entering the heating pipe 42 is ensured; the serpentine heating pipe 42 extends the circulation distance in the air preheating tank 4 in the sewage, extends the heat exchange between the sewage and the air, and improves the air preheating effect, thereby improving the combustion efficiency of the burner 2.

Referring to fig. 2 and 3, a purification pipe 5 is disposed between the water outlet end of the sewage pipe 31 and the water inlet end of the water inlet pipe 423. The purge pipe 5 includes a main pipe 51, a branch pipe 52, and a main pipe 53. The water inlet end of the main pipe 51 is fixed on the water outlet end of the sewage pipe 31 through a flange, and the main pipe 51 is communicated with the sewage pipe 31. The water outlet end of the branch pipe 52 II is fixed on the water inlet end of the water inlet pipe 423 through a flange, the branch pipe 52I is communicated with the branch pipe 52 II, the branch pipe 52I and the branch pipe 52 II are coaxial, the branch pipe 52 is fixed between the main pipe I51 and the main pipe II 53, the branch pipe 52 is communicated with the main pipe I51 and the main pipe II 53, and the purifying pipe 5 is integrally T-shaped. The branch pipe 52 is fixedly connected with a water baffle 521, the water baffle 521 is arranged close to the water outlet direction of the first main pipe 51, and the side face, close to the first main pipe 51, of the water baffle 521 is an arc-shaped face. When the sewage in the main pipe 51 flows to the position of the branch pipe 52, the baffle 521 can intercept the sewage, and the sewage flows to the branch pipe 52 along the arc-shaped surface of the baffle 521, so that the sewage which directly enters the main pipe two 53 from the main pipe 51 is reduced, and the sewage can be preliminarily precipitated in the branch pipe 52.

Referring to fig. 2 and 3, a cleaning bucket 54 is disposed at the bottom of the branch pipe 52, the cleaning bucket 54 is used for collecting impurities deposited in the branch pipe 52, and the cleaning bucket 54 includes a connecting portion 541 and a slag collecting portion 542. Connecting portion 541 is the pipe-shaped structure, and is equipped with the internal thread on the inner wall of connecting portion 541, and the outer wall bottom of lateral conduit 52 is provided with the external screw thread, realizes dismantling through the cooperation of internal thread and external screw thread between connecting portion 541 and the lateral conduit 52 and is connected. The inside deposit of collection sediment portion 542 has impurity, and the through-hole has been seted up at the top of collection sediment portion 542, and the through-hole sets up through the realization intercommunication in the inside of branch pipeline 52 and collection sediment portion 542. The outer wall of the slag collecting part 542 is fixedly connected with an observation plate 543, the observation plate 543 is a transparent plate, and the content of impurities in the slag collecting part 542 can be conveniently and visually observed through the observation plate 543, so that an operator can timely clean the cleaning bucket 54. Fixedly connected with filter 531 in trunk line two 53, filter 531 are fixed on the intake end of trunk line two 53, go back fixedly connected with active carbon adsorption plate 532 in trunk line two 53, and filter 531 and active carbon adsorption plate 532 set up in order along the direction of rivers in trunk line two 53.

The implementation principle of the embodiment is as follows: when flowing in the sewage discharge pipe 31, the impurities can partially deposit in the cleaning hopper 54 under the action of gravity when flowing in the branch pipes 52 sequentially through the main pipe 51 under the blocking of the water baffle 521; when the water amount of the branch pipe 52 is large, the branch pipe can overflow into the second main pipe 53, and when the branch pipe passes through the second main pipe 53, the filter plate 531 filters the sewage firstly, so that large impurities in the water can be removed; when the filtered sewage passes through the activated carbon adsorption plate 532, the activated carbon adsorption plate 532 can remove micro impurities in the sewage; the purified water flows into the heating pipe 42 through the water inlet pipe 423 to preheat the air, so that the problem that impurities in the sewage are easily adhered to the inner wall of the heating pipe 42 to form scales is solved, and the heat exchange efficiency of the heating pipe 42 is ensured.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a boiler air supply system, is including air-blower (1), combustor (2) and boiler (3) that connect in order, air-blower (1) reaches be equipped with air preheating cabinet (4) between combustor (2), be provided with on air preheating cabinet (4) with air-out end fixed connection's of air-blower (1) air-supply line (41), be provided with on air preheating cabinet (4) with air-out end fixed connection's of combustor (2) play tuber pipe (411), be equipped with heating pipe (42) in air preheating cabinet (4), the both ends of heating pipe (42) are water inlet (421) and delivery port (422) respectively, fixedly connected with blow off pipe (31) on boiler (3), its characterized in that: fixedly connected with on water inlet (421) of heating pipe (42) with outlet end fixed connection's of blow off pipe (31) inlet tube (423), the end of intaking of inlet tube (423) reaches common fixedly connected with purge tube (5) on the outlet end of blow off pipe (31), purge tube (5) include with outlet end fixed connection's of blow off pipe (31) trunk line one (51), with branch pipeline (52) of the outlet end intercommunication of trunk line one (51) and with branch pipeline (52) the outlet end intercommunication and with inlet end fixed connection's of inlet tube (423) trunk line two (53), along rivers direction fixedly connected with filter (531) and active carbon adsorption plate (532) in order in trunk line two (53).

2. A boiler air supply system according to claim 1, characterized in that: and the branch pipeline (52) is fixedly connected with a water baffle (521) positioned in the water outlet direction of the main pipeline I (51).

3. A boiler air supply system according to claim 2, characterized in that: the side face, close to the first main pipeline (51), of the water baffle (521) is an arc-shaped face.

4. A boiler air supply system according to claim 1, characterized in that: the bottom of the branch pipeline (52) is provided with a cleaning bucket (54).

5. A boiler air supply system according to claim 4, characterized in that: the cleaning bucket (54) comprises a connecting part (541) in threaded connection with the bottom of the branch pipeline (52) and a slag collecting part (542) communicated with the connecting part (541).

6. A boiler air supply system according to claim 5, characterized in that: an observation plate (543) is fixedly connected to the slag collecting part (542).

7. A boiler air supply system according to claim 1, characterized in that: the heating pipe (42) is a serpentine heating pipe (42).

8. A boiler air supply system according to claim 1, characterized in that: the periphery of the sewage draining pipe (31) and the periphery of the water inlet pipe (423) are coated with heat insulation cotton (311).