CN213777664U

CN213777664U - Biomass reverse-burning five-return-stroke steam generator

Info

Publication number: CN213777664U
Application number: CN202022807193.5U
Authority: CN
Inventors: 赵士坤; 何勇
Original assignee: Hebei Lanfeng Boiler And Pressure Vessel Manufacturing Co ltd
Current assignee: Hebei Lanfeng Boiler And Pressure Vessel Manufacturing Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-07-23
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses a five return stroke steam generator are prevented burning by living beings forms the water cavity between the inner shell of furnace body and the shell, through a tobacco pipe intercommunication between tobacco chamber one and the tobacco chamber two, and a tobacco pipe is located the inside in water cavity. The second smoke chamber is communicated with the energy saver through a second smoke inlet, a second smoke pipe communicated with the energy saver is arranged inside the inner shell of the energy saver, and the top end of the second smoke pipe is communicated with the smoke outlet. The energy saver is provided with a first water inlet, a first water outlet of the energy saver is communicated with a second water inlet of the water cavity through a first connecting pipe, a second water outlet of the water cavity is communicated with the water collecting pipe through a second connecting pipe and a third connecting pipe, a plurality of evaporating pipes communicated with the water collecting pipe are arranged on the water collecting pipe and located inside the furnace body, the top ends of the evaporating pipes are communicated with the evaporating chamber, and a steam outlet is formed in the top of the evaporating chamber. The utility model adopts the above structure the five return stroke steam generator of living beings anti-fever can solve the problem that current steam generator heat exchange efficiency is low.

Description

Biomass reverse-burning five-return-stroke steam generator

Technical Field

The utility model belongs to the technical field of steam generator structure technique and specifically relates to a five return stroke steam generator are burnt in living beings anti-.

Background

A steam generator, commonly called a boiler, is an energy conversion device that converts chemical energy in fuel into heat energy through combustion, so that the boiler outputs steam with a certain amount of heat energy. Most of the existing steam generators are 2 or 3 return strokes, and the high-temperature flue gas generated by the steam generators is low in recovery rate, so that the heat exchange efficiency of the steam generators is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a five return stroke steam generator are burnt in living beings anti-, solve the problem that current steam generator heat exchange efficiency is low.

In order to achieve the purpose, the utility model provides a five-return steam generator is burnt in biomass reversal, including combustion chamber and furnace body, communicate through the flue between combustion chamber and the furnace body, the furnace body includes inner shell and shell, forms the water cavity between inner shell and the shell, the bottom of water cavity is provided with smoke chamber one, the top of water cavity is provided with smoke chamber two, communicate through a plurality of tobacco pipes between smoke chamber one and the smoke chamber two, tobacco pipe one is located the inside of water cavity, the upper portion of inner shell is provided with the smoke inlet one that communicates with tobacco pipe one, the smoke outlet one of tobacco pipe one communicates with smoke chamber two, communicate through smoke inlet two between smoke chamber two and the energy-saving appliance, the energy-saving appliance is located the top of furnace body, the inside of energy-saving appliance is provided with the casing, the inside of casing is provided with the tobacco pipe two that communicates with the energy-saving appliance, the top of tobacco pipe two communicates with the exhaust port that sets up above the energy-saving appliance;

be provided with water inlet one on the energy-saving appliance, the delivery port of energy-saving appliance passes through connecting pipe one and communicates with the water inlet two in water cavity, the delivery port in water cavity passes through connecting pipe two and connecting pipe three and the collector pipe intercommunication, be provided with the evaporating pipe of a plurality of and collector pipe intercommunication on the collector pipe, the evaporating pipe is located the inside of furnace body, the top and the evaporating chamber intercommunication of evaporating pipe, the evaporating chamber is located between smoke chamber two and the casing, smoke inlet two sets up in the evaporating chamber, the top of evaporating chamber is provided with steam outlet.

Preferably, a feed inlet is arranged above the combustion chamber, a burner is arranged at the lower part of the combustion chamber, and the bottom of the combustion chamber is communicated with the furnace body through a flue.

Preferably, the water collecting pipe is of an annular structure, the water collecting pipe is arranged above a base of the furnace body, a plurality of evaporation tubes are uniformly arranged on the water collecting pipe, and a plurality of fins are arranged on the side walls of the evaporation tubes along the length direction of the evaporation tubes.

Preferably, the water inlet is located at the lower part of the water cavity, and the water outlet of the water cavity is located at the upper part of the water cavity.

Preferably, the first smoke pipe and the second smoke pipe are both threaded smoke pipes.

Preferably, a liquid level meter is arranged on the furnace body, the top end of the liquid level meter is communicated with the evaporation chamber, and the bottom end of the liquid level meter is communicated with the third connecting pipe.

Preferably, the top of the evaporation chamber is provided with a safety valve.

A five return stroke steam generator are burnt to living beings, the flue gas carries out the heat transfer of five return strokes with water, has improved the utilization ratio that the flue gas preheats, has improved steam generator's heat exchange efficiency.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a biomass reverse-burning five-pass steam generator of the present invention;

fig. 2 is a schematic top view of an embodiment of a biomass counter-combustion five-pass steam generator according to the present invention.

Reference numerals

1. A combustion chamber; 2. a furnace body; 3. a flue; 4. a feed inlet; 5. a burner; 6. an inner shell; 7. a housing; 8. a first smoke pipe; 9. a water chamber; 10. a first smoke chamber; 11. a second smoke chamber; 12. a second smoke inlet; 13. an energy saver; 14. a housing; 15. a second smoke pipe; 16. a smoke outlet; 17. a first water inlet; 18. a first connecting pipe; 19. a water inlet II; 20. a second connecting pipe; 21. a third connecting pipe; 22. a water collection pipe; 23. an evaporation tube; 24. a fin; 25. an evaporation chamber; 26. a steam outlet; 27. a liquid level meter; 28. a first smoke inlet; 29. And a first smoke outlet.

Detailed Description

The technical solution of the present invention is further explained by the accompanying drawings and examples.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Examples

Fig. 1 is the structural schematic diagram of the embodiment of the biomass reverse combustion five-pass steam generator of the utility model, and fig. 2 is the overlooking structural schematic diagram of the embodiment of the biomass reverse combustion five-pass steam generator of the utility model. As shown in the figure, the biomass reverse combustion five-pass steam generator comprises a combustion chamber 1 and a furnace body 2, wherein the combustion chamber 1 is communicated with the furnace body 2 through a flue 3. A feeding hole 4 is arranged above the combustion chamber 1, and the biomass fuel enters the combustion chamber 1 through the feeding hole 4. A burner 5 is provided on a lower side wall of the combustion chamber 1, and the burner 5 ignites the fuel. The feeding hole 4 is arranged above, the burner 5 is arranged below, the fuel is burnt at the lower part, and the fuel is burnt in a back burning mode, so that the fuel is burnt more completely, and the waste of the fuel and the problem of smoke leakage of the combustion chamber 1 are reduced. The bottom of the combustion chamber 1 is communicated with the furnace body 2 through a flue 3, and high-temperature flue gas generated by combustion in the combustion chamber 1 enters the furnace body 2 through the flue 3.

The furnace body 2 comprises an inner shell 6 and an outer shell 7, and the inner shell 6 and the outer shell 7 are hermetically connected with the base and the top of the furnace body 2. A water cavity 9 is formed between the inner shell 6 and the outer shell 7, a first smoke chamber 10 is arranged at the bottom of the water cavity 9, a second smoke chamber 11 is arranged at the top of the water cavity 9, and the first smoke chamber 10 is communicated with the second smoke chamber 11 through a plurality of first smoke pipes 8. The first smoke pipe 8 is positioned in the water cavity 9, the upper part of the inner shell 6 is provided with a first smoke inlet 28 communicated with the first smoke pipe 8, and a first smoke outlet 29 of the first smoke pipe 8 is communicated with the second smoke chamber 11. The high-temperature smoke in the furnace body 2 enters the interior of the descending smoke pipe I8 through the smoke inlet I28 and then enters the smoke chamber I10, and the smoke in the smoke chamber I10 enters the smoke chamber II 11 through the ascending smoke pipe I8 and the smoke outlet I29. The upward smoke pipe I8 and the downward smoke pipe II 15 exchange heat with the water in the water cavity 9.

The second smoke chamber 11 is communicated with the energy saver 13 through a second smoke inlet 12, and the energy saver 13 is positioned above the furnace body 2. The second smoke inlets 12 are uniformly distributed along the circumferential direction of the economizer 13. A shell 14 is arranged inside the economizer 13, a smoke chamber is formed between the shell 14 and the outer wall of the economizer 13, and the smoke chamber exchanges heat with water in the shell 14 through the shell 14. The inside of the housing 14 is provided with a plurality of second smoke pipes 15 communicated with the smoke chamber of the economizer 13, and the top ends of the second smoke pipes 15 are communicated with a smoke outlet 16 arranged above the economizer 13. The flue gas in the second smoke pipe 15 exchanges heat with the water in the shell 14 through the second smoke pipe 15.

The first smoke pipe 8 and the second smoke pipe 15 are both threaded smoke pipes, the flow speed of smoke in the threaded smoke pipes is generally 20m/s, the heat transfer efficiency of the threaded smoke pipes is improved by 1.5-2.1 times compared with that of a light pipe, the smoke spirally advances in the pipes under the strong disturbance state, a good dust cleaning effect is achieved on the inner walls of the smoke pipes, and the problem that the smoke pipes are easy to block is solved.

The economizer 13 is provided with a first water inlet 17, the first water inlet 17 is communicated with the inner cavity of the shell 14, low-temperature raw water enters the shell 14 through the first water inlet 17, and heat exchange is carried out between the inner part of the shell 14 and the smoke in the second smoke pipe 15. The water outlet of the energy saver 13 is communicated with a water inlet II 19 of the water cavity 9 through a connecting pipe I18, and the water inlet I17 and the water outlet are both arranged at the upper part of the energy saver 13. The water after heat exchange of the economizer 13 enters the water cavity 9 between the outer shell 7 and the inner shell 6 through the water outlet and the connecting pipe I18, and further heat exchange is carried out between the water cavity 9 and the flue gas in the flue pipe I8. The water outlet of the water cavity 9 is communicated with a water collecting pipe 22 through a second connecting pipe 20 and a third connecting pipe 21. The second water inlet 19 is positioned at the lower part of the water cavity 9, and the water outlet of the water cavity 9 is positioned at the upper part of the water cavity 9.

The water collecting pipe 22 is provided with a plurality of evaporating pipes 23 communicated with the water collecting pipe 22, and the evaporating pipes 23 are positioned inside the furnace body 2. Water enters the water collecting pipe 22 and the evaporating pipe 23 after heat exchange in the water cavity 9, high-temperature flue gas in the furnace body 2 exchanges heat with water in the evaporating pipe 23, and the water is evaporated in the evaporating pipe 23 to form steam. The top end of the evaporation tube 23 is communicated with an evaporation chamber 25, the evaporation chamber 25 is positioned between the second smoke chamber 11 and the shell 14, the second smoke inlet 12 is arranged in the evaporation chamber 25, and the top of the evaporation chamber 25 is provided with a steam outlet 26. The evaporation chamber 25 is arranged between the first smoke inlet 28 and the second smoke inlet in a sealing way. The vapor in the evaporation tube 23 enters the evaporation chamber 25 and is then sent out through the vapor outlet 26 for use by the user.

The water collecting pipe 22 is of an annular structure, the water collecting pipe 22 is arranged above a base of the furnace body 2, a plurality of evaporation pipes 23 are evenly arranged on the water collecting pipe 22, and a plurality of fins 24 are arranged on the side wall of each evaporation pipe 23 along the length direction of the evaporation pipe 23. The fins 24 increase the contact area between the evaporating tubes 23 and the high-temperature flue gas in the furnace body 2, increase the heat exchange area and ensure more sufficient heat exchange.

The furnace body 2 is provided with a liquid level meter 27, the top end of the liquid level meter 27 is communicated with the evaporation chamber 25, and the bottom end of the liquid level meter 27 is communicated with the third connecting pipe 21. The liquid level meter 27 is used to detect the water level in the evaporation tube 23. The top of the evaporation chamber 25 is provided with a safety valve.

A five return stroke steam generator's of living beings anti-fever working process do: the flue gas in the combustion chamber 1 enters the furnace body 2 through the flue 3, and the flue gas in the furnace body 2 moves upwards as a return stroke; the high-temperature flue gas in the furnace body 2 exchanges heat with the water in the evaporation pipe 23, then enters the first smoke pipe 8 through the first smoke inlet 28, the first downward smoke pipe 8 sends the flue gas into the first smoke chamber 10, and the flue gas of the first downward smoke pipe 8 moves from top to bottom, which is a two-pass process; the smoke in the smoke chamber I10 enters the smoke chamber II 11 through the ascending smoke pipe I8, and the smoke moves from bottom to top in the ascending smoke pipe I8 in a three-return stroke; the upward smoke pipe I8 and the downward smoke pipe I8 exchange heat with water in the water cavity 9 and then enter the smoke chamber II 11 through the smoke outlet I29; the smoke in the smoke chamber II 11 enters the energy saver 13 through the smoke inlet II 12, the smoke exchanges heat with water in the shell 14 through the shell 14 in the energy saver 13, and the smoke moves from top to bottom in the energy saver 13 in four return strokes; the flue gas in the economizer 13 enters the shell 14 through the second smoke tube 15, exchanges heat with water in the shell 14, and is discharged through the smoke outlet 16, and the flue gas moves from bottom to top in the second smoke tube 15 in five return strokes. The flue gas and the water are subjected to heat exchange through five return strokes, the waste heat utilization of the flue gas is improved, the water is preheated by the waste heat of the flue gas, the temperature of the water is improved, and the heat exchange efficiency of the steam generator is improved.

Therefore, the utility model adopts the above structure the five return stroke steam generator are burnt in the living beings anti-, can solve the problem that current steam generator heat exchange efficiency is low.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.

Claims

1. The utility model provides a five return stroke steam generator are burnt in biomass, includes combustion chamber and furnace body, through flue intercommunication, its characterized in that between combustion chamber and the furnace body: the energy-saving furnace comprises a furnace body and a furnace body, wherein a water cavity is formed between the inner shell and the outer shell, a first smoke chamber is arranged at the bottom of the water cavity, a second smoke chamber is arranged at the top of the water cavity, the first smoke chamber is communicated with the second smoke chamber through a plurality of first smoke pipes, the first smoke pipe is positioned in the water cavity, a first smoke inlet communicated with the first smoke pipe is formed in the upper part of the inner shell, a first smoke outlet of the first smoke pipe is communicated with the second smoke chamber, the second smoke chamber is communicated with an energy-saving device through a second smoke inlet, the energy-saving device is positioned above the furnace body, a shell is arranged in the energy-saving device, a second smoke pipe communicated with the energy-saving device is arranged in the shell, and the top end of the second smoke pipe is communicated with a smoke outlet arranged above the energy-saving device;

2. The biomass reverse-burning five-pass steam generator according to claim 1, characterized in that: a feed inlet is formed above the combustion chamber, a combustor is arranged at the lower part of the combustion chamber, and the bottom of the combustion chamber is communicated with the furnace body through a flue.

3. The biomass reverse-burning five-pass steam generator according to claim 1, characterized in that: the water collecting pipe is of an annular structure and is arranged above the base of the furnace body, a plurality of evaporation tubes are uniformly arranged on the water collecting pipe, and a plurality of fins are arranged on the side wall of each evaporation tube along the length direction of the evaporation tube.

4. The biomass reverse-burning five-pass steam generator according to claim 1, characterized in that: the water inlet is positioned at the lower part of the water cavity, and the water outlet of the water cavity is positioned at the upper part of the water cavity.

5. The biomass reverse-burning five-pass steam generator according to claim 1, characterized in that: the first smoke pipe and the second smoke pipe are both threaded smoke pipes.

6. The biomass reverse-burning five-pass steam generator according to claim 1, characterized in that: and a liquid level meter is arranged on the furnace body, the top end of the liquid level meter is communicated with the evaporation chamber, and the bottom end of the liquid level meter is communicated with the third connecting pipe.

7. The biomass reverse-burning five-pass steam generator according to claim 1, characterized in that: and a safety valve is arranged at the top of the evaporation chamber.