CN206930199U - A kind of heat exchanger for being used for anti-product during large sized unit underload and blocking up ash - Google Patents
A kind of heat exchanger for being used for anti-product during large sized unit underload and blocking up ash Download PDFInfo
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- CN206930199U CN206930199U CN201720828223.6U CN201720828223U CN206930199U CN 206930199 U CN206930199 U CN 206930199U CN 201720828223 U CN201720828223 U CN 201720828223U CN 206930199 U CN206930199 U CN 206930199U
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- heat
- adjustable baffle
- heat exchanger
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- exchanging component
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Abstract
The utility model discloses it is a kind of be used for large sized unit underload when anti-product block up the heat exchanger of ash, belong to field of heat exchangers, the heat exchanger is made up of two or more heat-exchanging component, and the fluoran stream surface of each heat-exchanging component is provided with adjustable baffle；The adjustable baffle, which has, opens and closes two states, and when adjustable baffle plate is opened, air-flow can be by flowing into the heat-exchanging component at its rear after adjustable baffle；When adjustable flapper closure, air-flow can not be by adjustable baffle, so as to flow into the heat-exchanging component at its rear.When the utility model can be such that the heat exchanger runs at low load, heat-transfer surface is blocked by a part by the adjustable baffle of closing, allows flue gas to flow through remainder, you can improves flue gas flow rate, the dust that heat exchange surface deposits is taken away, the heat-transfer surface dust stratification of heat exchanger can effectively be reduced or avoided.
Description
Technical field
It the utility model is related to field of heat exchangers, and in particular to anti-product stifled ash when being used for large sized unit underload to one kind
Heat exchanger.
Background technology
In the period of power surplus, station boiler is mostly difficult to band at full capacity, some even long-term underrun.It is large-scale
Station boiler load when participating in peak regulation may be reduced to below 50% load, and at this moment flue gas flow is greatly reduced, and heat exchange is set
Flow velocity drastically reduces between standby pipe, and in the flue gas environment more containing dust, flue gas is from soot blowing ability degradation, and heat-transfer surface is easily
Dust stratification, blocking channel, exchange capability of heat can be had a strong impact on.Although general boiler plant is equipped with soot blower, at low load
It is difficult to clean off taking away heat exchanger surface dust stratification.After there is serious stifled ash, the stifled ash of product is also difficult to after being raised even if boiler load
Take away, cause heat exchanger serious wear, service life greatly shortens.The key factor that heat exchange surface dust stratification is taken away is also resided in into cigarette
Gas velocity, as long as there is rational flue gas flow rate, dust can be taken away with flue gas substantially in flue gas, will not also be sunk in heat exchanger surface
Product.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of anti-product during large sized unit underload stifled ash of being used for
Heat exchanger, flue gas flow rate can be locally improved at low load, dust stratification is blown afloat and taken away, keep heat exchange surface cleaning clean, make
It has good exchange capability of heat.
In order to solve the above technical problems, technical scheme is used by the utility model：
A kind of heat exchanger for being used for anti-product during large sized unit underload and blocking up ash, the heat exchanger are exchanged heat group by two or more
Part is formed, and the fluoran stream surface of each heat-exchanging component is provided with adjustable baffle；
The adjustable baffle, which has, opens and closes two states：
When adjustable baffle plate is opened, air-flow can be by flowing into the heat-exchanging component at its rear after adjustable baffle；
During adjustable flapper closure, air-flow can not be by adjustable baffle, so as to flow into the heat-exchanging component at its rear.
According to such scheme, the adjustable baffle includes framework and rotates spoke；The rotation spoke is provided with for end
The strip of short axle, short axle are embedded in the frame of framework；It is adjacent successively and parallel be paved with whole framework to rotate spoke.
Compared with prior art, the beneficial effects of the utility model are：When heat exchanger is run at low load, pass through closing
Adjustable baffle heat-transfer surface is blocked into a part, allow flue gas to flow through remainder, you can improve flue gas flow rate, by heat exchange surface
The dust of deposition is taken away, and the heat-transfer surface dust stratification of heat exchanger can effectively be reduced or avoided.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the positive structure diagram of adjustable baffle in the utility model；
Fig. 3 is the overlooking the structure diagram of adjustable baffle in the utility model (adjustable baffle is closed)；
Fig. 4 is the overlooking the structure diagram of adjustable baffle in the utility model (adjustable baffle is in open mode).
Embodiment
Specific embodiment of the present utility model is further described below in conjunction with the accompanying drawings, the lexical or textual analysis of each label in figure
For：1- heat-exchanging components, 2- adjustable baffles, 3- frameworks, 4- rotate spoke.
The basic reason that product blocks up ash is that flue gas flow rate is relatively low.How at low load or low flue gas the utility model is conceived to
The part or rotation flue gas flow rate of heat exchanger are improved during flow velocity, so as to which dust stratification be taken away, keeps heat exchanger surface cleaning clean.
Generally, heat exchanger is divided into four heat-exchanging components 1 by we, is set in the fluoran stream surface of each heat-exchanging component 1 adjustable
Baffle plate 2, so that heat exchanger has the ability of adjustable fluoran stream surface product.The adjustable baffle 2 includes framework 3 and rotates spoke
4；The spoke 4 that rotates is the strip that end is provided with short axle, and short axle is embedded in the frame of framework 3；Rotate spoke 4 it is adjacent successively and
It is parallel to be paved with whole framework 3.Adjustable baffle 2, which has, opens and closes two states, when adjustable baffle plate 2 is opened, air-flow
The heat-exchanging component 1 at its rear can be flowed into by adjustable baffle 2；When adjustable baffle plate 2 is closed, air-flow can not pass through adjustable stopper
Plate 2, so as to which the heat-exchanging component 1 at its rear can not be flowed into.
When heat exchanger is run at low load, heat-transfer surface is blocked by a part by the adjustable baffle 2 of closing, allows flue gas
Flow through remainder, you can improve flue gas flow rate, the dust that heat exchange surface deposits is taken away.Because adjustable baffle 2 also uses
Packet is set, and corresponding adjustable baffle 2 can be opened or closed according to different situations, so as to ensure that dust will not be deposited in
Heat-transfer surface.
Flue gas flow rate measuring point is set on heat exchanger inlet flue duct, and the flow velocity signal can switch to electric signal and reach collecting and distributing control
System DCS, is closed or opening operation by DCS according to control logic to adjustable baffle 2, is exchanged heat so as to realize under underload
Flue gas flow rate in device is adjustable, ensures at low load not dust stratification.Such as can close edge under 75% load can
Mode baffle plate 2, the flue gas flow rate in its excess-three heat-exchanging component 1 is improved, take away dust stratification from soot blowing ability by flue gas；
The adjustable baffle 2 of two edge sides can be closed under 50% load, improves the flue gas flow rate in middle two heat-exchanging components 1, according to
Dust stratification is taken away from soot blowing ability by flue gas, keeps heat exchanger surface clean, reaches optimal heat transfer effect.The utility model is main
For the operating mode of the long-term underrun of boiler, the heat-transfer surface dust stratification of heat exchanger is reduced or avoided.
Claims (2)
- A kind of 1. heat exchanger for being used for anti-product during large sized unit underload and blocking up ash, it is characterised in that：The heat exchanger is by two Above heat-exchanging component (1) is formed, and the fluoran stream surface of each heat-exchanging component (1) is provided with adjustable baffle (2)；The adjustable baffle (2), which has, opens and closes two states：When adjustable baffle plate (2) is opened, air-flow can flow into the heat-exchanging component (1) at its rear afterwards by adjustable baffle (2)；When adjustable baffle plate (2) is closed, air-flow can not be by adjustable baffle (2), so as to flow into the heat exchange group at its rear Part (1).
- 2. a kind of heat exchanger for being used for anti-product during large sized unit underload and blocking up ash according to claim 1, its feature exist In：The adjustable baffle (2) includes framework (3) and rotates spoke (4)；The spoke (4) that rotates is that end is provided with short axle Strip, short axle are embedded in the frame of framework (3)；It is adjacent successively and parallel be paved with whole framework (3) to rotate spoke (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720828223.6U CN206930199U (en) | 2017-07-10 | 2017-07-10 | A kind of heat exchanger for being used for anti-product during large sized unit underload and blocking up ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720828223.6U CN206930199U (en) | 2017-07-10 | 2017-07-10 | A kind of heat exchanger for being used for anti-product during large sized unit underload and blocking up ash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206930199U true CN206930199U (en) | 2018-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720828223.6U Active CN206930199U (en) | 2017-07-10 | 2017-07-10 | A kind of heat exchanger for being used for anti-product during large sized unit underload and blocking up ash |
Country Status (1)
| Country | Link |
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| CN (1) | CN206930199U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737795A (en) * | 2018-11-28 | 2019-05-10 | 北京启顺京腾科技有限责任公司 | Conducive to the flue gas heat-exchange unit of cleaning |
| CN109737777A (en) * | 2018-11-28 | 2019-05-10 | 北京启顺京腾科技有限责任公司 | Flue gas heat-exchange unit |
| CN114526475A (en) * | 2022-02-25 | 2022-05-24 | 西安西热锅炉环保工程有限公司 | Heat pipe low-temperature economizer capable of adjusting heat exchange area and working method thereof |
-
2017
- 2017-07-10 CN CN201720828223.6U patent/CN206930199U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737795A (en) * | 2018-11-28 | 2019-05-10 | 北京启顺京腾科技有限责任公司 | Conducive to the flue gas heat-exchange unit of cleaning |
| CN109737777A (en) * | 2018-11-28 | 2019-05-10 | 北京启顺京腾科技有限责任公司 | Flue gas heat-exchange unit |
| CN109737777B (en) * | 2018-11-28 | 2020-05-12 | 山西华丰阳化工有限公司 | Smoke heat exchanger |
| CN114526475A (en) * | 2022-02-25 | 2022-05-24 | 西安西热锅炉环保工程有限公司 | Heat pipe low-temperature economizer capable of adjusting heat exchange area and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 611830 Taixing Avenue, Sichuan Dujiangyan Economic Development Zone, Dujiangyan City, Chengdu, Sichuan Province, No. 3 Patentee after: China Electric Power Construction Group Dujiang Power Equipment Co. Ltd. Address before: 611830 Taixing Avenue, Sichuan Dujiangyan Economic Development Zone, Dujiangyan City, Chengdu, Sichuan Province, No. 3 Patentee before: Dujiang Power Equipment Factory |
|
| CP01 | Change in the name or title of a patent holder |