CN206846778U - A kind of air preheater - Google Patents

A kind of air preheater Download PDF

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Publication number
CN206846778U
CN206846778U CN201720616175.4U CN201720616175U CN206846778U CN 206846778 U CN206846778 U CN 206846778U CN 201720616175 U CN201720616175 U CN 201720616175U CN 206846778 U CN206846778 U CN 206846778U
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China
Prior art keywords
heat exchanger
flue gas
air
air inlet
header
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CN201720616175.4U
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Chinese (zh)
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王键
廖光亚
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CHONGQING SHANGSHUN HEAT TRANSFER EQUIPMENT Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The utility model discloses a kind of air preheater, including the heat exchanger shell with heat exchange cabin, there are at least two distinguished and admirable roads in the heat transfer cabin room, and heat exchanger shell both ends are respectively arranged with the air inlet header corresponding with the distinguished and admirable road, outlet header, there are some vertically arranged heat exchanger tubes in heat transfer cabin room, and the flue gas air inlet header that can be connected with heat exchanger tube is provided at both ends with the top of heat exchanger shell, flue gas outlet header, the heat exchanger shell bottom and center top are provided with the flue gas turnover room that can be connected with heat exchanger tube, and the flue gas air inlet header, flue gas turnover room, heat exchanger tube and flue gas outlet header form one and may be such that the heat exchanger channels that flue gas direction is repeatedly turned to.The utility model is in the confined space, you can reduces air preheater metal consumption, reduces equipment manufacturing cost, also solve the problem that the problems such as swinging control preheater leaks out, dust stratification blocks, and ensure effective recuperation of heat effect, exhaust gas temperature is reduced, there are certain dust removing effects.

Description

A kind of air preheater
Technical field
A kind of air preheater is the utility model is related to, belongs to energy-conserving and environment-protective technical fiel.
Background technology
In recent years, in the case where production background environmentally friendly again should be saved, swinging is used in coal fired boiler of power plant unit After air preheater, the big inadequate natural endowment of its air leak rate of air curtain is exposed it is obvious that but using traditional light pipe regenerative air heater There is also the shortcomings that arrangement space-consuming is big, metal consumption is big, at the same no matter Conventional optical tube regenerative air heater or revolution Regenerative air heater all has that dust stratification blocks and the higher operation diseconomy of delivery temperature.
How can both be arranged in the confined space of existing boiler tail heat exchanger, and can solves heat exchanger air leakage, product The problems such as ash blocks, metal consumption is big, high fume temperature, it is the skill for being badly in need of solving in terms of current thermal power plant is produced with survival and development Art problem.
The content of the invention
For above-mentioned weak point of the prior art, the utility model aims to provide a kind of air preheater, limited Arrangement space in, you can reduce air preheater metal consumption, reduce equipment investment cost, also solve the problem that swinging control is pre- The problems such as hot device leaks out, dust stratification blocks, and ensure effective recuperation of heat effect, exhaust gas temperature is reduced, there is certain dedusting to imitate Fruit.
To achieve these goals, the technical solution of the utility model:A kind of air preheater, including with heat exchange cabin Heat exchanger shell, there are at least two distinguished and admirable roads in the heat transfer cabin room, and the heat exchanger shell both ends are respectively arranged with The air inlet header corresponding with the distinguished and admirable road, outlet header, it is characterised in that:Have in the heat transfer cabin room some vertically arranged Heat exchanger tube, and be provided at both ends with the top of the heat exchanger shell can be connected with the heat exchanger tube flue gas air inlet header, Flue gas outlet header, the heat exchanger shell bottom and center top are provided with the flue gas turnover that can be connected with the heat exchanger tube Room, and the flue gas air inlet header, flue gas turnover room, heat exchanger tube and flue gas outlet header form one and may be such that the progress of flue gas direction is more The heat exchanger channels of secondary steering.
Further, the heat exchanger tube uses ribbed pipe inside and outside three-dimensional, wherein, the body inside and outside wall of ribbed pipe inside and outside the three-dimensional On be provided with some three-dimensional rib plates.
Further, the distinguished and admirable road includes First air runner, the Secondary Air runner being set up in parallel, and this is once distinguished and admirable Road, Secondary Air runner are separated by the heat exchange cabin by air baffle;The air inlet header includes being located at the heat exchanger Housing the same side and be connected respectively with the First air runner, Secondary Air runner First air air inlet header, Secondary Air air inlet Header, the outlet header include located at the heat exchanger shell opposite side and respectively with the First air runner, Secondary Air runner First air outlet header, the Secondary Air outlet header being connected;The flue gas air inlet header, flue gas outlet header and flue gas turnover Room by flue gas divides into two parts, and the heat exchanger tube on the two parts and the First air runner, Secondary Air runner Corresponding connection.
Further, the flue gas turnover room bottom in the heat exchanger shell bottom is provided with ash bucket, the ash bucket Quantity be at least one.
Further, the heat exchanger shell bottom is provided with support skirt.
The beneficial effects of the utility model:Pass through the layout of heat exchanger tube in heat exchanger shell and heat transfer cabin room so that having In the arrangement space of limit, you can reduce air preheater metal consumption, reduce equipment investment cost, also solve the problem that swinging control The problems such as preheater leaks out, dust stratification blocks, and ensure effective recuperation of heat effect, exhaust gas temperature is reduced, there is certain dedusting Effect.
Brief description of the drawings
Fig. 1 is structure chart of the present utility model;
Fig. 2 is A direction views in Fig. 1.
In accompanying drawing, 1- flue gas air inlet headers, 2- flue gas outlet headers, 3- heat exchanger shells, 4- Secondary Air air inlet headers, 5- First air air inlet header, 6- Secondary Air outlet headers, 7- First air outlet headers, 8- flue gases turnover room, 9- support skirts, 10- Heat exchanger tube, 11- air baffles, 12- flue gas demarcation strips, 13- ash buckets, 14- heat exchange cabin;A- heat smoke imports, b- cold flue gas Outlet, the cold secondary air inlets of c-, the cold wind inlet of d-, the hot secondary air inlets of e-, the outlet of f- heat primary airs, g- ash discharging holes.
Embodiment
The utility model is further described with reference to specific embodiment and accompanying drawing.
A kind of air preheater described as shown in Figure 1, Figure 2, it includes the heat exchanger shell 3 with heat exchange cabin 14, the heat exchange There are at least two distinguished and admirable roads in cabin 14, and the both ends of heat exchanger shell 3 are respectively arranged with the air inlet corresponding with the distinguished and admirable road Header, outlet header, heat exchange have some vertically arranged heat exchanger tubes 10 in cabin 14, and at the top both ends of heat exchanger shell 3 It is provided with the flue gas air inlet header 1 that can be connected with heat exchanger tube 10, flue gas outlet header 2, the bottom of heat exchanger shell 3 and centre Top be provided with can be connected with heat exchanger tube 10 flue gas turnover room 8, and the flue gas air inlet header 1, flue gas turnover room 8, change Heat pipe 10 and flue gas outlet header 2 form one and may be such that the heat exchanger channels that flue gas direction is repeatedly turned to.
Here, flue gas air inlet header 1, flue gas outlet header 2, flue gas turnover room 8 are attached with heat exchanger tube 10 respectively, can Directly according to the length of heat exchanger shell 3 or the arrangement of heat exchanger tube 10, to specifically to set flue gas air inlet header 1, flue gas goes out The concrete structure and its connection configuration between heat exchanger tube 10 of gas header 2 and flue gas turnover room 8, cause the flue gas to enter on the whole Gas header 1, flue gas outlet header 2, flue gas turnover room 8 and heat exchanger tube 10 form a heat exchanger channels, and the heat exchanger channels are exchanging heat Repeatedly turnover is formed in cabin 14, to carry out heat exchange process as far as possible, realizes the full utilization of heat energy.
This example is illustrated using distinguished and admirable road as twice, and distinguished and admirable road includes First air runner, the Secondary Air runner being set up in parallel, And the First air runner, Secondary Air runner are separated by the cabin 14 that exchanges heat by air baffle 11;Air inlet header, which includes being located at, to be changed Hot the same side of the device housing 3 and First air air inlet header 5, the Secondary Air that are connected respectively with First air runner, Secondary Air runner enter Gas header 4, outlet header include located at the opposite side of heat exchanger shell 3 and are connected respectively with the First air runner, Secondary Air runner Logical First air outlet header 7, Secondary Air outlet header 6;Flue gas air inlet header 1, flue gas outlet header 2 and flue gas turnover room 8 Two parts are separated into by flue gas demarcation strip 12, and the two parts and the heat exchanger tube 10 on First air runner, Secondary Air runner are right It should connect.
Specifically, medium is heat exchange thermal medium in heat exchanger tube 10, and the thermal medium can be flue gas, or hot-air, And the medium to exchange heat in cabin 14 is cold air.It that is to say in this example that there is heat smoke import a, flue gas on flue gas air inlet header 1 There is cold flue gas outlet b on outlet header 2, there is cold secondary air inlet c, First air air inlet header 5 on Secondary Air air inlet header 4 It is upper that there is a cold wind inlet d, there is hot Secondary Air outlet e on Secondary Air outlet header 6, have on First air outlet header 7 Heat primary air exports f.Cold Secondary Air and cold First air enter from cold secondary air inlet c, the cold First air on heat exchanger shell 3 respectively Mouth d enters to heat exchange cabin 14, then exports e, heat primary air outlet f outflows by the hot Secondary Air on heat exchanger shell 3;And heat is situated between Matter such as heat smoke by heat smoke import a enter heat exchanger tube 10 in, through flue gas turnover room 8 formed flue gas repeatedly turn to after again by Cold flue gas outlet b outflows, so as to realize heat exchange.
Heat exchanger tube 10 uses ribbed pipe inside and outside three-dimensional, wherein, it is provided with inside and outside the three-dimensional on the body inside and outside wall of ribbed pipe Some three-dimensional rib plates.Meanwhile the flue gas turnover bottom of room 8 in the bottom of heat exchanger shell 3 is provided with ash bucket 13, and the ash discharge The quantity of bucket is at least one, has ash discharging hole g on the ash bucket 13.Vertical or vertically arranged three are used by heat exchanger tube 10 Ribbed pipe inside and outside dimension, the dust stratification possibility of heat exchanger is greatly reduced, while the flue gas turnover room 8 of the bottom of heat exchanger shell 3 has Certain gravitational dust collection characteristic, when flue gas flows through flue gas turnover room 8, coarse powder dirt will be fallen into ash bucket 13, and by ash discharging hole g Discharge, plays certain pre- dedusting effect.Meanwhile ribbed pipe heat transfer technology inside and outside three-dimensional is employed, it can be arranged with identical heat exchanger In space, more traditional light pipe regenerative air heater greatly improves heat exchanger intensity, is empty so as to save cloth as much as possible Between and reduce metal consumption, and this programme heat exchanger uses the pattern of more heat exchange cabins and verticals, can utilize power station Boiler back end ductwork and across the lower area lateral arrangement heat exchanger of denitration, play the effect for making full use of arrangement space.
Finally, in order to ensure the structure stability of whole heat exchanger, support skirt 9 is provided with the bottom of heat exchanger shell 3.
Flue gas demarcation strip 12 and air baffle 11 are provided with the utility model in heat exchanger shell 3, it can be ensured that secondary Wind and First air are separately heated, while using the heat exchanger 10 of tubular structure, eliminate rotary regenerative air heater hot blast to flue gas The problem of leakage.
The technical scheme provided above the utility model embodiment is described in detail, used herein specifically Individual example is set forth to the principle and embodiment of the utility model embodiment, and the explanation of above example is only applicable to help Assistant solves the principle of the utility model embodiment;Meanwhile for those of ordinary skill in the art, implement according to the utility model Example, the there will be changes in embodiment and application, in summary, this specification content should not be construed as To limitation of the present utility model.

Claims (5)

1. a kind of air preheater, including the heat exchanger shell (3) with heat exchange cabin (14), heat exchange cabin (14) is interior to be had Have at least two distinguished and admirable roads, and the heat exchanger shell (3) both ends be respectively arranged with the air inlet header corresponding with the distinguished and admirable road, Outlet header, it is characterised in that:There are some vertically arranged heat exchanger tubes (10) in heat exchange cabin (14), and changed described The flue gas air inlet header (1) that can be connected with the heat exchanger tube (10), flue gas outlet connection are provided at both ends with the top of hot device housing (3) Case (2), heat exchanger shell (3) bottom and center top are provided with the flue gas turnover that can be connected with the heat exchanger tube (10) Room (8), and the flue gas air inlet header (1), flue gas turnover room (8), heat exchanger tube (10) and flue gas outlet header (2) form one and can made Obtain the heat exchanger channels that flue gas direction is repeatedly turned to.
A kind of 2. air preheater according to claim 1, it is characterised in that:The heat exchanger tube (10) is using in three-dimensional Outer ribbed pipe, wherein, it is provided with some three-dimensional rib plates on the body inside and outside wall of ribbed pipe inside and outside the three-dimensional.
A kind of 3. air preheater according to claim 2, it is characterised in that:The distinguished and admirable road includes one be set up in parallel Secondary distinguished and admirable road, Secondary Air runner, and the First air runner, Secondary Air runner pass through air baffle by heat exchange cabin (14) (11) separate;The air inlet header include located at the heat exchanger shell (3) the same side and respectively with the First air runner, First air air inlet header (5) that Secondary Air runner is connected, Secondary Air air inlet header (4), the outlet header include being located at institute State heat exchanger shell (3) opposite side and the First air outlet header being connected respectively with the First air runner, Secondary Air runner (7), Secondary Air outlet header (6);The flue gas air inlet header (1), flue gas outlet header (2) and flue gas turnover room (8) by Flue gas demarcation strip (12) is separated into two parts, and the two parts and the heat exchanger tube on the First air runner, Secondary Air runner (10) corresponding connection.
A kind of 4. air preheater according to claim 3, it is characterised in that:In the heat exchanger shell (3) bottom Flue gas turnover room (8) bottom be provided with ash bucket (13), the quantity of the ash bucket is at least one.
A kind of 5. air preheater according to claim 3, it is characterised in that:Heat exchanger shell (3) bottom is set There is support skirt (9).
CN201720616175.4U 2017-05-31 2017-05-31 A kind of air preheater Active CN206846778U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720616175.4U CN206846778U (en) 2017-05-31 2017-05-31 A kind of air preheater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720616175.4U CN206846778U (en) 2017-05-31 2017-05-31 A kind of air preheater

Publications (1)

Publication Number Publication Date
CN206846778U true CN206846778U (en) 2018-01-05

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CN (1) CN206846778U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113063161A (en) * 2021-04-16 2021-07-02 国家电投集团重庆合川发电有限公司 Boiler flue gas waste heat recovery system of thermal power factory
WO2021179928A1 (en) * 2020-03-11 2021-09-16 广东中鹏热能科技有限公司 Self-cleaning air preheater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021179928A1 (en) * 2020-03-11 2021-09-16 广东中鹏热能科技有限公司 Self-cleaning air preheater
CN113063161A (en) * 2021-04-16 2021-07-02 国家电投集团重庆合川发电有限公司 Boiler flue gas waste heat recovery system of thermal power factory

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GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20201013

Address after: 400033, Chongqing District, Shapingba Town, wellhead village, tile bamboo Fort Society

Patentee after: Chongqing Guangya heat exchange equipment Co., Ltd

Address before: 404100 Longshan Road, 25 (Industrial Park), Pu Lu Street office, Tongliang County, Chongqing

Patentee before: CHONGQING SHANGSHUN HEAT TRANSFER EQUIPMENT Co.,Ltd.

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20220223

Address after: 402460 building 15, No. 5, Chuangxin Avenue, Changzhou street, Rongchang District, Chongqing

Patentee after: Wang Jian

Address before: 400033 wazhubao community, Jingkou village, Jingkou Town, Shapingba District, Chongqing

Patentee before: Chongqing Guangya heat exchange equipment Co.,Ltd.