CN212961504U

CN212961504U - O-shaped structure horizontal arrangement boiler

Info

Publication number: CN212961504U
Application number: CN202021759997.6U
Authority: CN
Inventors: 朱秋平; 蒋鑫; 何焕强; 高屾; 冯小康
Original assignee: Wuxi Zozen Boilers Co ltd
Current assignee: Wuxi Zozen Boilers Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-04-13
Anticipated expiration: 2030-08-21

Abstract

The utility model provides a boiler is arranged to "O" type structure level, including combustor, drum, furnace and afterbody flue, the drum is located furnace's top, the combustor intercommunication furnace's front end, afterbody flue intercommunication furnace's rear end, furnace's lateral wall is the water-cooling wall, furnace's transversal personally submitting "O" type, furnace's water-cooling wall through at least one first tedge and at least one first downcomer with the drum intercommunication, combustor, afterbody flue with furnace parallel arrangement. "O" type structure level arrange the boiler to natural gas, petroleum gas, coke oven gas or light diesel oil are fuel, and the steam of production is used for promoting the steam turbine, drives generator electricity generation, heat supply, also is used for supplying vapour to some special industrial production enterprises. The arrangement mode of the boiler can greatly reduce the height of the high-parameter boiler, reduce the steel consumption, reduce the manufacturing cost and has stronger market competitiveness.

Description

O-shaped structure horizontal arrangement boiler

Technical Field

The utility model belongs to the boiler field of making, concretely relates to boiler is arranged to "O" type structure level.

Background

With the increasing requirements of China on environmental protection, boilers using natural gas, petrochemical gas, coking gas or light diesel oil as fuel are more and more, low-parameter WNS type fire tube boilers and SZS type double-drum water tube boilers of the boilers are mainly used, high-parameter (steam pressure is more than 2.5MPa and temperature is more than 400 ℃) single drum and vertical (horizontal double drums) are mainly arranged, and the boilers have the defects of more drums, more platform escalators, more convection tube bundles, high steel consumption and high manufacturing cost, and operating workers need to operate the inspection ladder stand, so that the operation and running cost of the boilers is high.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a boiler is arranged to "O" type structure level, overcomes above-mentioned defect, solves above-mentioned problem through the change to boiler inner structure.

For solving the technical problem, the utility model provides a boiler is arranged to "O" type structure level, including combustor, drum, furnace and afterbody flue, the drum is located furnace's top, the combustor intercommunication furnace's front end, afterbody flue intercommunication furnace's rear end, furnace's lateral wall is the water-cooling wall, furnace's transversal "O" type of personally submitting, furnace's water-cooling wall through at least one first tedge and at least one first downcomer with the drum intercommunication, combustor, afterbody flue with furnace parallel arrangement.

As an optimized scheme of "O" type structure level arrangement boiler, the lateral wall of afterbody flue is the water-cooling wall, the water-cooling wall of afterbody flue pass through at least one second tedge and at least one second downcomer with the drum intercommunication.

As a preferred embodiment of the O-shaped structure horizontal arrangement boiler of the present invention, the exhaust gas flue is divided into a first parallel section, a second parallel section and a third parallel section, the corner between the first parallel section and the second parallel section is 180 degrees, and the corner between the second parallel section and the third parallel section is 180 degrees.

As an "O" type structure level arranges an optimal selection scheme of boiler, be equipped with high temperature over heater, low temperature over heater and high temperature energy-saving appliance in the afterbody flue, high temperature energy-saving appliance passes through the third tedge intercommunication the drum, low temperature over heater passes through the third downcomer intercommunication the drum.

As the utility model relates to a preferred scheme of boiler is arranged to "O" type structure level, high temperature over heater, low temperature over heater and high temperature energy-saving appliance set up in the second parallel section.

As an "O" type structure level arranges an optimal selection scheme of boiler, "O" type structure level arranges the boiler and still includes the desuperheater, the steam inlet of desuperheater with low temperature over heater passes through first pipeline intercommunication, the steam outlet of desuperheater with high temperature over heater passes through the second pipeline intercommunication.

As an optimized scheme of boiler is arranged to "O" type structure level, "O" type structure level is arranged the boiler and is still included the low temperature energy-saving appliance, the low temperature energy-saving appliance sets up the outside of afterbody flue, the low temperature energy-saving appliance through the fourth tedge with the boiler drum intercommunication.

As the utility model discloses a preferred scheme of "O" type structure level arrangement boiler, low temperature economizer sets up the outside of third parallel section.

As an "O" type structure level arranges an optimal selection scheme of boiler, "O" type structure level arranges the boiler and still includes air heater, air heater sets up the outside of afterbody flue, air heater pass through the third pipeline with the combustor intercommunication.

As the utility model discloses a preferred scheme of "O" type structure level arrangement boiler, air heater sets up the outside of third parallel section.

Compared with the prior art, the utility model provides a boiler is arranged to "O" type structure level has following advantage:

1. the application range is wide, the device is suitable for the fuel oil/gas boiler with the evaporation capacity of more than 10t/h and the steam pressure of 2.5MPa, and the requirements of industrial power generation and heat and steam supply can be met;

2. only one boiler barrel is needed, and compared with an SZS type boiler, the number of the boiler barrels is reduced;

3. the boiler inner structure adopts the level to arrange, greatly reduced the height of boiler, reduced the steel consumption of making steel construction and platform staircase, reduced manufacturing cost, can reduce the operation workman simultaneously and patrol and examine the cat ladder height, reduce operation running cost and risk.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein the content of the first and second substances,

FIG. 1 is a schematic structural view of a horizontal boiler with an "O" shaped structure according to the present invention;

FIG. 2 is a schematic left-side view structural diagram of a horizontal boiler with an "O" shaped structure according to the present invention;

fig. 3 is a schematic view of a top view structure of the horizontal boiler with an "O" shaped structure according to the present invention.

Wherein: 1 is a boiler barrel, 2 is a combustor, 3 is a hearth, 4 is a tail flue, 5 is a high-temperature superheater, 6 is a desuperheater, 7 is a low-temperature superheater, 8 is a high-temperature economizer, 9 is a low-temperature economizer and 10 is an air preheater.

Detailed Description

A boiler is arranged to "O" type structure level, adopt the room to fire the technique, the horizontal level of furnace is arranged, presents "O" type, the afterbody flue is also the level and arranges, has arranged high temperature over heater, low temperature over heater and high temperature energy-saving appliance in the afterbody flue, has arranged low temperature energy-saving appliance, air heater behind the afterbody flue. And only a low-temperature economizer and a condenser can be arranged behind the tail flue according to the requirement, and an air preheater is not arranged. And the flue gas flows out of the air preheater or the condenser and enters a chimney to be discharged to the atmosphere.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the following embodiments.

First, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with at least one implementation of the invention is included. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Secondly, the utility model discloses utilize the structural schematic diagram etc. to describe in detail, when detailing the embodiment of the utility model, for the convenience of explanation, the schematic diagram that represents a "O" type structure level arrangement boiler structure can not do local amplification according to general proportion, moreover the schematic diagram is the example, and it should not limit the scope of the utility model protection here. In addition, the actual fabrication process should include three-dimensional space of length, width and depth.

Example one

Referring to fig. 1 to 3, fig. 1 is a schematic structural view of an "O" type horizontally arranged boiler according to the present invention; FIG. 2 is a schematic left-side view structural diagram of a horizontal boiler with an "O" shaped structure according to the present invention; fig. 3 is a schematic view of a top view structure of the horizontal boiler with an "O" shaped structure according to the present invention. As shown in fig. 1 to 3, the boiler with the horizontal arrangement of the "O" shaped structure comprises a boiler barrel 1, a burner 2, a hearth 3, a tail flue 4, a high temperature superheater 5, a desuperheater 6, a low temperature superheater 7, a high temperature economizer 8, a low temperature economizer 9, an air preheater 10 and other main components. Wherein, the combustor 2 sends natural gas, chemical gas or light diesel oil into the hearth 3 for combustion; the air preheater 10 preheats cold air and then sends the cold air into the combustor 2 to provide oxygen required by fuel combustion; the boiler barrel 1, the hearth 3, the tail flue 4, the high-temperature superheater 5, the desuperheater 6, the low-temperature superheater 7, the high-temperature energy saver 8 and the low-temperature energy saver 9 are steam generation systems. The boiler with the structure can be designed to have the evaporation capacity of more than 10t/h and the steam pressure of more than 2.5MPa, and the steam temperature is determined according to the requirements of users. The boiler is provided with only one boiler barrel 1, and the membrane water-cooled wall of the hearth 3 and the membrane water-cooled wall of the tail flue 4 are horizontally arranged.

The cross section of a membrane water-cooled wall of a hearth 3 is shaped like an English letter 'O' and is horizontally arranged below a boiler barrel 1, a burner 2 is arranged on the front wall water-cooled wall of the hearth 3, a tail flue 4 is composed of the membrane water-cooled wall and is arranged in parallel with the hearth 3, a high-temperature superheater 5, a low-temperature superheater 7 and a high-temperature economizer 8 are arranged in the tail flue 4, and a low-temperature economizer 9 and an air preheater 10 are arranged outside the tail flue 4. The boiler barrel 1 and the tail flue 4 are horizontally arranged, and flue gas horizontally flows through the hearth 3, the tail flue 4, the high-temperature superheater 5, the low-temperature superheater 7, the high-temperature economizer 8, the low-temperature economizer 9 and the air preheater 10. After the fuel is combusted in the hearth 3, the generated flue gas completely horizontally flows through the membrane wall of the hearth 3 in sequence, then enters a first parallel section (not shown) of the tail flue 4, the tail flue 4 turns for 180 degrees and then enters a second parallel section (not shown) of the tail flue 4, then flows through the high-temperature superheater 5, the low-temperature superheater 7 and the high-temperature economizer 8, the tail flue 4 turns for 180 degrees and then enters a third parallel section (not shown) of the tail flue 4, and then flows through the low-temperature economizer 9 and the air preheater 10 and then is discharged out of the boiler.

The working principle of the structure is as follows: the boiler is provided with only one boiler barrel 1 which is horizontally arranged, fuel gas and oil are used as fuels, and flue gas generated by fuel combustion horizontally flows through all heated parts, so that the aim of generating steam required by a user according to the requirements of designed evaporation capacity, steam pressure and steam temperature is fulfilled.

After being conveyed into the combustor 2, the fuel gas or the oil is mixed with air required by combustion and is combusted in the hearth 3, and the periphery of the hearth 3 is provided with a membrane type water-cooled wall structure. After the fuel is combusted, a large amount of heat is released, the flue gas carries the heat to be sequentially transmitted to media in a membrane water wall of a hearth 3, a membrane water wall of a tail flue, a high-temperature superheater 5, a low-temperature superheater 7, a high-temperature economizer 8, a low-temperature economizer 9 and an air preheater 10 for heat exchange, the media in the high-temperature economizer 8 and the low-temperature economizer 9 are water, the water enters a boiler barrel 1 through a third ascending pipe (not shown) and a fourth ascending pipe (not shown) after absorbing heat, hot water in the boiler barrel 1 respectively enters the membrane water wall of the hearth 3 and the membrane water wall of the tail flue 4 through a first descending pipe (not shown) and a second descending pipe (not shown), steam-water mixtures generated after absorbing heat in the membrane water wall of the hearth 3 and the membrane water wall of the tail flue 4 respectively enter the boiler barrel 1 through the first ascending pipe (not shown) and the second ascending pipe (not shown), steam-water separation is carried out in the boiler barrel 1, the separated saturated steam enters the low-temperature superheater 7 through a third downcomer (not shown), the steam temperature is about 360 ℃, the saturated steam enters the desuperheater 6 through a first pipeline (not shown) after being heated, the temperature of the high-temperature superheater 5 is controlled in a water spraying and cooling mode, the saturated steam enters the high-temperature superheater 5 through a second pipeline (not shown) after being desuperheated, and qualified superheated steam with the temperature of 450 plus 485 ℃ is generated and output to steam consuming equipment of a user. The cold air enters the air preheater 10, exchanges heat with the hot flue gas entering the air preheater 10, absorbs heat, and then enters the combustor 2 through a third pipeline (not shown) to support combustion. After the heat of the flue gas is released, the flue gas is discharged out of the boiler from the air preheater 10 and discharged to the air through a chimney.

Once the above embodiment has been practically operated as follows: a set of steam power generation and heat supply unit taking coke oven gas as fuel is built in an enterprise, two original coal-fired chain boilers which are assembled at 20t/h in a boiler room are limited by discharge, and the two coal-fired boilers are dismantled and a gas-fired boiler needs to be installed. But because of boiler room height is not enough, can not adopt the boiler that vertical "II" structure was arranged, consequently, adopted "O" type structure level arrange the boiler, this boiler produces steam 45t/h, steam pressure 3.82MPa, steam temperature 450 ℃, arrange in former boiler room, supply vapour to a formula steam turbine of condensing of taking out for electricity generation, heat supply. The height of the boiler is reduced, the manufacturing cost is reduced, and the boiler can be arranged in an original boiler room, so that the height of the original boiler room does not need to be increased, and obvious economic benefits are brought to users.

To sum up, the utility model provides a boiler is arranged to "O" type structure level to natural gas, petroleum gas, coke oven gas or light diesel oil are fuel, and the steam of production is used for promoting the steam turbine, drives generator electricity generation, heat supply, also is used for supplying vapour to some special industrial production enterprises. The arrangement mode of the boiler can greatly reduce the height of the high-parameter boiler, reduce the steel consumption, reduce the manufacturing cost and has stronger market competitiveness.

It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a boiler is arranged to "O" type structure level which characterized by: the boiler comprises a combustor, a boiler barrel, a hearth and a tail flue, wherein the boiler barrel is positioned above the hearth, the combustor is communicated with the front end of the hearth, the tail flue is communicated with the rear end of the hearth, the side wall of the hearth is a water-cooled wall, the cross section of the hearth is O-shaped, the water-cooled wall of the hearth is communicated with the boiler barrel through at least one first ascending pipe and at least one first descending pipe, and the combustor, the tail flue and the hearth are arranged in parallel.

2. The horizontally disposed boiler of an "O" type configuration as claimed in claim 1, wherein: the side wall of the tail flue is a water-cooled wall, and the water-cooled wall of the tail flue is communicated with the drum through at least one second ascending pipe and at least one second descending pipe.

3. The horizontally disposed boiler of an "O" type configuration as claimed in claim 1, wherein: the tail flue is divided into a first parallel section, a second parallel section and a third parallel section, the rotation angle between the first parallel section and the second parallel section is 180 degrees, and the rotation angle between the second parallel section and the third parallel section is 180 degrees.

4. A horizontally disposed boiler of the "O" type configuration as claimed in claim 3, wherein: and a high-temperature superheater, a low-temperature superheater and a high-temperature energy saver are arranged in the tail flue, the high-temperature energy saver is communicated with the drum through a third ascending pipe, and the low-temperature superheater is communicated with the drum through a third descending pipe.

5. The horizontally disposed boiler of an "O" type structure as set forth in claim 4, wherein: the high-temperature superheater, the low-temperature superheater and the high-temperature economizer are arranged in the second parallel section.

6. The horizontally disposed boiler of an "O" type structure as set forth in claim 4, wherein: the boiler with the O-shaped structure arranged horizontally further comprises a desuperheater, a steam inlet of the desuperheater is communicated with the low-temperature superheater through a first pipeline, and a steam outlet of the desuperheater is communicated with the high-temperature superheater through a second pipeline.

7. A horizontally disposed boiler of the "O" type configuration as claimed in claim 3, wherein: the boiler with the O-shaped structure horizontally arranged further comprises a low-temperature energy saver, the low-temperature energy saver is arranged on the outer side of the tail flue, and the low-temperature energy saver is communicated with the boiler barrel through a fourth ascending pipe.

8. The horizontally disposed boiler of an "O" type structure as claimed in claim 7, wherein: the low temperature economizer is disposed outside the third parallel section.

9. A horizontally disposed boiler of the "O" type configuration as claimed in claim 3, wherein: the boiler is horizontally arranged in the O-shaped structure and further comprises an air preheater, the air preheater is arranged on the outer side of the tail flue, and the air preheater is communicated with the combustor through a third pipeline.

10. The horizontally disposed boiler of an "O" type configuration as claimed in claim 9, wherein: the air preheater is disposed outside of the third parallel section.