CN218096010U - Coal-saving device for boiler - Google Patents

Abstract

The utility model relates to a boiler economizer, the on-line screen storage device comprises a base, be equipped with first economizer and second economizer on the base, first economizer one end is equipped with the dust removal case, dust removal case one end is equipped with the air-supply line, and the other end is equipped with first guide duct, first economizer upper end and second economizer upper end all are equipped with the reposition of redundant personnel case, the reposition of redundant personnel case intercommunication on the first guide duct other end and the first economizer, be equipped with the second guide duct between the reposition of redundant personnel case on first economizer and the second economizer, the second economizer other end is equipped with out the tuber pipe, first economizer one end is equipped with the outlet pipe, second economizer one end is equipped with the inlet tube, be equipped with the aqueduct between first economizer and the second economizer, this equipment can remove dust to the flue gas and filter, makes gaseous even entering economizer to fall into two parts and absorb the waste heat, guarantee that the economizer stable in structure efficient goes on.

Description

Coal-saving device for a boiler

technical field

The utility model relates to the technical field of boiler equipment, in particular to a boiler coal-saving device.

Background technique

The boiler is a kind of energy conversion equipment. Fuel such as coal is input into the boiler, and after conversion by the boiler, hot water or steam with a certain amount of heat energy is output outside. If the flue gas generated in the boiler is directly discharged into the air during production, the boiler A lot of heat inside is taken away by the flue gas, resulting in a lot of energy waste, so an economizer will be installed in the production to absorb the waste heat of the flue gas and reduce the waste of resources.

In actual use, there is still a large amount of dust in the flue gas. The reeds responsible for heat exchange in the economizer are many and dense, and are easily covered by dust. Excessive accumulation of dust will cause blockage, affect gas circulation, and reduce heat. The efficiency of the exchange affects the ability of the economizer to absorb waste heat, and in actual use, the gas and liquid in the economizer are flowing rapidly, and the temperature of the gas may not be completely lowered before being discharged from the economizer, which cannot be completely absorbed Waste heat will cause a certain amount of waste, and the gas is often passed into the economizer through an air inlet. Then spread slowly to the periphery in the economizer. During this process, the water pipes located around the upper end of the economizer will not be able to fully contact the hot air flow, which will affect the efficiency of heat absorption and waste heat.

Utility model content

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the utility model provides a boiler coal-saving device.

(2) Technical solution

In order to achieve the above purpose, the utility model provides the following technical solutions: a boiler economizer, including a base, the base is provided with a first economizer and a second economizer, and one end of the first economizer is set There is a dust removal box, one end of the dust removal box is provided with an air inlet pipe, and the other end is provided with a first air guide pipe, the upper end of the first economizer and the upper end of the second economizer are both equipped with a splitter box, the first The other end of the air guide pipe communicates with the splitter box on the first economizer, and a second air guide pipe is provided between the first economizer and the splitter box on the second economizer, and the second economizer The other end of the economizer is provided with an air outlet pipe, one end of the first economizer is provided with a water outlet pipe, and one end of the second economizer is provided with a water inlet pipe, between the first economizer and the second economizer With aqueduct.

Preferably, the dust removal box is provided with an installation frame, and the installation frame is slidingly connected with the dust removal box, and the installation frame is provided with a dust filter, and the dust filter is installed at an inclination, which is convenient for cleaning the dust filter and ensures stable dust removal ability.

In a further aspect, it is preferable that a dust collection tank is provided in the dust collection tank, and a dust collection box is slidably connected in the dust collection tank, so as to facilitate timely collection and cleaning of dust and prevent dust from clogging the equipment.

It is further preferred that a pulling plate is provided at one end of the dust collection box and one end of the installation frame, a pulling port corresponding to the pulling plate is provided on the dust removal box, and a handle is provided at one end of the pulling plate to facilitate the installation The frame and dust box are taken out for easy access.

In a further preferred embodiment, a sealing strip is provided on one side of the pulling plate, and a sealing groove corresponding to the sealing strip is provided at the pulling opening of the dust removal box to provide sealing ability and avoid gas leakage.

In a further aspect, it is preferable that several shunt blocks are arranged in the shunt box, and several shunt pipes are arranged at the lower end of the shunt box, and the shunt pipes are equally spaced and uniformly distributed, and the first economizer and the second economizer There are inlets corresponding to the shunt pipes on both sides, so that the gas can be split more easily and better contact with the reeds in the first economizer and the second economizer.

Further preferably, the first air guide pipe and the second air guide pipe are provided with non-return air valves, and the water guide pipes are provided with non-reverse water valves to avoid backflow of gas or liquid and ensure the stability of heating .

(3) Beneficial effects

Compared with the prior art, the utility model provides a boiler coal-saving device, which has the following beneficial effects:

1. The utility model filters the flue dust before the flue gas enters the economizer by setting the dust removal box and the dust filter net, and collects it through the dust collection box, so that the flue gas becomes clean gas and flows into the economizer to avoid dust Block the inside of the economizer to ensure the smoothness of the economizer and absorb heat, so that the economizer can work stably, and cooperate with the installation frame, pull plate and pull port to facilitate the disassembly and cleaning of the dust filter and dust box.

2. The utility model carries out waste heat absorption twice by setting the first economizer and the second economizer, and connects the first economizer and the second economizer together through the second air guide pipe and water guide pipe, The flue gas after being absorbed by the first economizer enters the second economizer to continue to absorb the waste heat, and the residual heat is used to preheat the unheated water to reduce the waste of heat.

3. The utility model divides the gas flow before the gas enters the first economizer and the second economizer by setting a shunt box, and divides a gas flow into multiple airflows through the shunt block, so that the gas diffuses, and passes through the shunt pipe and the inflow The mouth is matched to make the gas enter the first economizer and the second economizer evenly, so that the hot air flow can fully contact with the inside of the first economizer and the second economizer, so as to ensure the efficient heat exchange.

Description of drawings

Fig. 1 is a schematic diagram of the front structure of a boiler coal-saving device in the utility model;

Fig. 2 is a schematic diagram of the coordination structure between the first economizer and the second economizer in the utility model;

Fig. 3 is a sectional view of the cooperation structure of the splitter box and the splitter block in the utility model;

Fig. 4 is a schematic structural view of the dust removal box in the utility model;

Fig. 5 is a cross-sectional view of the cooperation structure between the inside of the dust removal box and the dust filter in the utility model;

Fig. 6 is a schematic diagram of the structure of the dust collecting box in the present invention.

In the figure: 1. Base; 2. First economizer; 3. Second economizer; 4. Dust removal box; 5. Air inlet pipe; 6. First air guide pipe; 7. Splitter box; Two air guide pipes; 9, air outlet pipe; 10, water outlet pipe; 11, water inlet pipe; 12, water guide pipe; 13, installation frame; 14, dust filter net; 15, dust collection tank; 16, dust collection box; 17, Pull plate; 18, pull port; 19, handle; 20, sealing strip; 21, sealing groove; 22, shunt block; 23, shunt pipe; 24, inlet;

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Example 1:

Please refer to Figure 1 and Figure 2, a coal saving device for a boiler, including a base 1, a first economizer 2 and a second economizer 3 are arranged on the base 1, and a dust removal box 4 is arranged at one end of the first economizer 2 One end of the dust removal box 4 is provided with an air inlet pipe 5, the other end is provided with a first air guide pipe 6, the upper end of the first economizer 2 and the upper end of the second economizer 3 are equipped with a splitter box 7, the first air guide pipe 6 The other end communicates with the splitter box 7 on the first economizer 2, and a second air duct 8 is provided between the first economizer 2 and the splitter box 7 on the second economizer 3, and the second economizer The other end of the device 3 is provided with an air outlet pipe 9, one end of the first economizer 2 is provided with a water outlet pipe 10, one end of the second economizer 3 is provided with a water inlet pipe 11, the first economizer 2 and the second economizer 3 An aqueduct 12 is provided between them.

Referring to Fig. 1, Fig. 4, Fig. 5 and Fig. 6, in the present embodiment, an installation frame 13 is provided in the dust removal box 4, and the installation frame 13 is slidably connected with the dust removal box 4, and a dust filter net 14 is provided in the installation frame 13, The dust filter screen 14 is arranged obliquely, and the dust collection box 4 is provided with a dust collection tank 15, and the dust collection tank 15 is slidingly connected with a dust collection box 16, and one end of the dust collection box 16 and one end of the installation frame 13 are provided with a pull plate 17, and the dust collection box 4 is provided with a pull port 18 corresponding to the pull plate 17, one end of the pull plate 17 is provided with a handle 19, one side of the pull plate 17 is provided with a sealing strip 20, and the dust removal box 4 is provided with a corresponding seal strip 20 at the pull port 18. The sealing groove 21 provides filtering ability through the dust filter net 14 to stop the dust in the flue gas, and the dust filter net 14 arranged obliquely is not easy to be attached by dust, so that the dust falls in the dust collection box 16 in the dust collection tank 15, Drive the pull plate 17 to move through the handle 19, pull the dust collection box 16 and the installation frame 13 from the pull port 18, clean up the dust in the dust filter net 14 and the dust collection box 16, and then put it back, so that the sealing strip 20 and the seal The grooves 21 contact and cooperate to form a sealed space to avoid gas leakage during operation.

Please refer to Fig. 1-3, in this embodiment, there are several shunt blocks 22 inside the shunt box 7, and several shunt pipes 23 are arranged at the lower end of the shunt box 7, and the shunt pipes 23 are equally spaced and evenly distributed, the first economizer 2 Both the second economizer and the second economizer 3 are provided with an inlet 24 corresponding to the shunt pipe 23, the gas enters the shunt box 7, contacts with the shunt block 22, disperses under the guidance of several shunt blocks 22, and finally flows from different shunt The pipe 23 leaves the splitter box 7 and enters the first economizer 2 and the second economizer 3 from the inflow port 24 .

Please refer to Fig. 1, in the present embodiment, the first air guide pipe 6 and the second air guide pipe 8 are provided with a non-reverse air valve 25, the water guide pipe 12 is provided with a non-reverse water valve 26, and the non-reverse air valve 25 Prevent air flow backflow, check water valve 26 prevents water flow backflow, guarantee that the temperature of air flow is getting lower and lower, the temperature of water flow is getting higher and higher, guarantee heat exchange, the stability of absorbing waste heat capacity.

Example 2:

Please refer to Figure 1-6. When using the equipment, connect the outlet pipe 10 with the boiler, supply water from the water inlet pipe 11 to the second economizer 3, and then flow into the first economizer through the water guide pipe 12 after passing through the second economizer 3 2, and then flow from the outlet pipe 10 to the boiler, connect the air inlet pipe 5 with the flue gas outlet of the boiler, and provide flue gas into the air inlet pipe 5, and the flue gas flows into the dust removal box 4 along the air inlet pipe 5, and passes through the dust filter Net 14 provides filter capacity, and the dust in the flue gas is blocked, and the dust filter net 14 that is arranged obliquely is not easy to be attached by dust, makes dust drop to the dust collecting tank 15 under the influence of gravity, falls in the dust collecting box 16, passes through The gas in the filter dust net 14 leaves the dust removal box 4 and flows from the first air guide pipe 6 to the splitter box 7 on the first economizer 2. The gas contacts the splitter block 22, and is gradually guided by several splitter blocks 22 in sequence. Disperse, and finally leave the split box 7 from different split pipes 23, enter the first economizer 2 from the inlet port 24, exchange heat with the water passing through the first economizer 2, transfer part of the heat to the water, and then the gas Flow along the second air guide pipe 8 into the splitter box 7 on the second economizer 3, and the split flow through the splitter box 7 enters the second economizer 3 to exchange heat with the water in the second economizer 3 , through the water to absorb the waste heat of the gas, the first economizer 2 cooperates with the second economizer 3, the temperature of the gas that passes through the heat exchange in the first economizer 2 is relatively low, and the normal temperature water in the second economizer 3 is Preheat to raise the water temperature in the second economizer 3 and then enter the first economizer 2, and then be heated by the higher temperature gas in the first economizer 2 to ensure the quality of gas waste heat recovery.

Example 3:

Please refer to Fig. 1, Fig. 4, Fig. 5 and Fig. 6, based on the above-mentioned embodiment 2, when the equipment is working, the non-return air valve 25 prevents the backflow of the air flow, and the non-reverse water valve 26 prevents the backflow of the water flow, ensuring that the temperature of the air flow is getting lower and lower , the temperature of the water flow is getting higher and higher to ensure the heat exchange and the stability of the waste heat absorption capacity. When the equipment is finished working or there is too much dust in the dust removal box 4, it is necessary to clean the dust in the dust removal box 4. The handle 19 drives the pull plate 17 to move, and the The dust collection box 16 and the installation frame 13 are pulled out from the pull port 18, and the installation frame 13 drives the dust filter screen 14 to leave the dust removal box 4 together, clean up the dust on the dust filter screen 14 and the dust collection box 16, and then put it back. Make the sealing strip 20 contact and cooperate with the sealing groove 21 to form a sealed space, so as to avoid gas leakage during operation.

In all the schemes mentioned above, those involving the connection between the two components can choose welding, bolt and nut fit connection, bolt or screw connection or other known connection methods according to the actual situation, so I won’t go into details here. Where there is a fixed connection with writing, the preferred consideration is welding. Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that without departing from the principle and spirit of the present invention Various changes, modifications, substitutions and variations are possible to these embodiments, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. The utility model provides a boiler economizer, includes base (1), its characterized in that: be equipped with first economizer (2) and second economizer (3) on base (1), first economizer (2) one end is equipped with dust removal case (4), dust removal case (4) one end is equipped with air-supply line (5), and the other end is equipped with first guide duct (6), first economizer (2) upper end and second economizer (3) upper end all are equipped with reposition of redundant personnel case (7), reposition of redundant personnel case (7) intercommunication on first guide duct (6) other end and the first economizer (2), be equipped with second guide duct (8) between reposition of redundant personnel case (7) on first economizer (2) and second economizer (3), second economizer (3) other end is equipped with out tuber pipe (9), first economizer (2) one end is equipped with outlet pipe (10), second economizer (3) one end is equipped with inlet tube (11), be equipped with between first economizer (2) and the second economizer (3) guide duct (12).

2. The coal saving device for a boiler according to claim 1, wherein: be equipped with installing frame (13) in dust removal case (4), installing frame (13) and dust removal case (4) sliding connection, be equipped with in installing frame (13) and strain dirt net (14), strain dirt net (14) slope setting.

3. The coal saving device for a boiler according to claim 2, wherein: a dust collecting groove (15) is formed in the dust removing box (4), and a dust collecting box (16) is arranged in the dust collecting groove (15) in a sliding connection mode.

4. The coal saving device for a boiler according to claim 3, wherein: dust collection box (16) one end and installing frame (13) one end all are equipped with pulling board (17), set up pulling mouth (18) that correspond with pulling board (17) on dust removal case (4), pulling board (17) one end is equipped with handle (19).

5. The coal saving device for a boiler according to claim 4, wherein: one side of the pulling plate (17) is provided with a sealing strip (20), and the dust removal box (4) is provided with a sealing groove (21) corresponding to the sealing strip (20) at the pulling opening (18).

6. The coal saving device for a boiler according to claim 1, wherein: be equipped with several reposition of redundant personnel piece (22) in reposition of redundant personnel case (7), reposition of redundant personnel case (7) lower extreme is equipped with several shunt tubes (23), and shunt tubes (23) equidistant evenly distributed, all set up inflow mouth (24) that correspond with shunt tubes (23) on first economizer (2) and second economizer (3).

7. The coal saving device for a boiler according to claim 1, wherein: and the first air guide pipe (6) and the second air guide pipe (8) are both provided with a check air valve (25), and the water guide pipe (12) is provided with a check water valve (26).

Images