CN106440859B - A kind of control method of heat exchanger smoke temperature automatic regulating system - Google Patents
A kind of control method of heat exchanger smoke temperature automatic regulating system Download PDFInfo
- Publication number
- CN106440859B CN106440859B CN201610747969.4A CN201610747969A CN106440859B CN 106440859 B CN106440859 B CN 106440859B CN 201610747969 A CN201610747969 A CN 201610747969A CN 106440859 B CN106440859 B CN 106440859B
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- China
- Prior art keywords
- heat medium
- medium water
- heat
- smoke temperature
- flue gas
- Prior art date
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- 239000000779 smoke Substances 0.000 title claims abstract description 66
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 119
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000003546 flue gas Substances 0.000 claims abstract description 37
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000012716 precipitator Substances 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 21
- 230000007423 decrease Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002609 medium Substances 0.000 description 72
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chimneys And Flues (AREA)
Abstract
The present invention relates to a kind of pipe heat exchanger smoke temperature automatic regulating systems, including flue gas heat-exchange unit, electric precipitator, heat medium water inlet regulating valve and heat medium water bypass valve；Flue gas heat-exchange unit is arranged before electric precipitator, heat medium water water inlet pipe and heat medium water outlet pipe are connected to flue gas heat-exchange unit respectively, heat medium water inlet regulating valve is set on heat medium water water inlet pipe, heat medium water bypass valve is set between heat medium water water inlet pipe and heat medium water outlet pipe, and heat medium water bypass valve is located at side of the heat medium water inlet regulating valve far from flue gas heat-exchange unit in the junction of heat medium water water inlet pipe.Beneficial effects of the present invention: the present invention realizes the automatic control of pipe heat exchanger flue gas heat-exchange unit outlet smoke temperature, while guaranteeing heat medium water system stable operation, guarantees heat medium water loine pressure, keep system easily controllable, even running reduces security risk, improves pipe heat exchanger performance.
Description
Technical field
The invention belongs to heat exchanger fibre selection technical fields, more specifically, it be related to a kind of pipe heat exchanger smoke temperature from
The control method of dynamic regulating system.
Background technique
Pipe heat exchanger is to solve high-temperature flue gas to discharge the master for having an adverse effect to electric power factory equipment, nearby residents and environment
Approach is wanted, while being also the main means for improving efficiency of dust collection.Pipe heat exchanger absorbs high-temperature flue gas by heating agent aqueous medium
Heat reduces flue-gas temperature, improves dust collection efficiency.Currently, the not formed system of pipe heat exchanger fibre selection, perfect automatic
The problems such as control mode easily causes the fluctuation of heat exchanger smoke temperature excessive, heat medium water system pressure, instability of flow.How to realize and changes
The automatic control of pipe heat exchanger smoke temperature, while ensureing heat medium water system stable operation, become and compels problem highly necessary to be solved.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of automatic controls for realizing smoke temperature, improve dedusting
Efficiency guarantees the control method of the pipe heat exchanger smoke temperature automatic regulating system of heat medium water system stable operation.
To realize the above-mentioned technical purpose, the invention adopts the following technical scheme: this pipe heat exchanger smoke temperature is adjusted automatically
Section system, including flue gas heat-exchange unit, electric precipitator, heat medium water inlet regulating valve and heat medium water bypass valve；Flue gas heat-exchange unit
It is arranged before electric precipitator, heat medium water water inlet pipe and heat medium water outlet pipe are connected to flue gas heat-exchange unit respectively, and heat medium water water inlet is adjusted
Valve is set on heat medium water water inlet pipe, and heat medium water bypass valve is set between heat medium water water inlet pipe and heat medium water outlet pipe, heating agent
Water bypass valve is located at side of the heat medium water inlet regulating valve far from flue gas heat-exchange unit in the junction of heat medium water water inlet pipe.
The control method of pipe heat exchanger smoke temperature automatic regulating system, includes the following steps:
1) after presetting flue gas heat-exchange unit outlet smoke temperature value input, flue gas heat-exchange unit is entered by the control of smoke temperature PID controller
Heating agent water flow, and then control flue gas heat-exchange unit and export smoke temperature, and show that current flue gas heat-exchange unit exports smoke temperature by thermal resistance
Value；
2) after presetting the input of heat medium water total flow, bypass duct heating agent water flow is controlled by flow PID controller, passes through stream
Meter shows current heat medium water total flow；
3) when heat exchanger exit smoke temperature is higher than default smoke temperature value, increase heat medium water inlet regulating valve aperture, heat exchanger water inlet
Amount increases, and reduces heat exchanger exit smoke temperature；
4) when the increase of heat exchanger inflow, heating agent water flow is caused to rise, reduces heat medium water bypass valve aperture, reduced
Heating agent water flow keeps heat medium water total flow steady to former setting value；
5) when heat exchanger exit smoke temperature is lower than default smoke temperature value, reduction heat medium water inlet regulating valve aperture, heat exchanger water inlet
Amount reduces, and improves heat exchanger exit smoke temperature；
6) when the reduction of heat exchanger inflow, heating agent water flow is caused to decline, increases heat medium water bypass valve aperture, improved
Heating agent water flow keeps heat medium water total flow steady to former setting value；
7) by current flue gas heat-exchange unit outlet smoke temperature value compared with default smoke temperature value, if current smoke temperature value is equal to default smoke temperature
Value, then heat medium water inlet regulating valve adjusting terminate；
8) by the current heat medium water total flow compared with default heat medium water total flow, if current heat medium water total flow is equal to
Default heat medium water total flow, then heat medium water bypass valve adjusting terminate；
9) otherwise again since step 1).
Beneficial effects of the present invention: the present invention realizes the automatic control of pipe heat exchanger flue gas heat-exchange unit outlet smoke temperature, together
When guarantee heat medium water system stable operation, guarantee heat medium water loine pressure, keep system easily controllable, even running, reduce safety
Risk improves pipe heat exchanger performance.
Detailed description of the invention
Fig. 1 is pipe heat exchanger system schematic；
Fig. 2 is heat medium water inlet regulating valve control schematic diagram；
Fig. 3 is heat medium water bypass valve control schematic diagram；
Description of symbols: heat medium water inlet regulating valve 1, heat medium water bypass valve 2, flue gas heat-exchange unit 3, electric precipitator
4, heat medium water water inlet pipe 5, heat medium water outlet pipe 6.
Specific embodiment
The present invention is described further below with reference to embodiment.The explanation of following embodiments is merely used to help understand this
Invention.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, also
Can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection scope of the claims in the present invention
It is interior.
To realize the above-mentioned technical purpose, the invention adopts the following technical scheme: this pipe heat exchanger smoke temperature is adjusted automatically
Section system, including flue gas heat-exchange unit 3, electric precipitator 4, heat medium water inlet regulating valve 1 and heat medium water bypass valve 2；Flue gas changes
Hot device 3 is arranged before electric precipitator 4, and heat medium water water inlet pipe 5 and heat medium water outlet pipe 6 are connected to flue gas heat-exchange unit 3, heat medium water respectively
Inlet regulating valve 1 is set on heat medium water water inlet pipe 5, and heat medium water bypass valve 2 is set to heat medium water water inlet pipe 5 and heat medium water is discharged
Between pipe 6, heat medium water bypass valve 2 is located at heat medium water inlet regulating valve 1 far from flue gas in the junction of heat medium water water inlet pipe 5
The side of heat exchanger 3.
The control method of pipe heat exchanger smoke temperature automatic regulating system, includes the following steps:
1) after presetting the outlet of flue gas heat-exchange unit 3 smoke temperature value input, flue gas heat-exchange unit 3 is entered by the control of smoke temperature PID controller
Heating agent water flow, and then control flue gas heat-exchange unit 3 and export smoke temperature, and the outlet of current flue gas heat-exchange unit 3 is shown by thermal resistance
Smoke temperature value；
2) after presetting the input of heat medium water total flow, bypass duct heating agent water flow is controlled by flow PID controller, passes through stream
Meter shows current heat medium water total flow；
3) when heat exchanger exit smoke temperature is higher than default smoke temperature value, increase 1 aperture of heat medium water inlet regulating valve, heat exchanger water inlet
Amount increases, and reduces heat exchanger exit smoke temperature；
4) when the increase of heat exchanger inflow, heating agent water flow is caused to rise, reduces 2 aperture of heat medium water bypass valve, drop
Low-heat matchmaker water flow keeps heat medium water total flow steady to former setting value；
5) when heat exchanger exit smoke temperature is lower than default smoke temperature value, reduction 1 aperture of heat medium water inlet regulating valve, heat exchanger water inlet
Amount reduces, and improves heat exchanger exit smoke temperature；
6) when the reduction of heat exchanger inflow, heating agent water flow is caused to decline, increases 2 aperture of heat medium water bypass valve, mentions
High heating agent water flow keeps heat medium water total flow steady to former setting value；
7) by current flue gas heat-exchange unit 3 outlet smoke temperature value compared with default smoke temperature value, if current smoke temperature value is equal to default cigarette
Temperature value, the then adjusting of heat medium water inlet regulating valve 1 terminate；
8) by the current heat medium water total flow compared with default heat medium water total flow, if current heat medium water total flow is equal to
Default heat medium water total flow, the then adjusting of heat medium water bypass valve 2 terminate；
9) otherwise again since step 1).
Referring to Fig. 2 and Fig. 3: the control difference of heat medium water inlet regulating valve and heat medium water bypass valve is as follows:
Heat medium water inlet regulating valve:
1) after presetting the input of heat exchanger exit smoke temperature value, the heating agent water flow of heat exchanger is entered by the control of smoke temperature PID controller
Amount, and then heat exchanger exit smoke temperature is controlled, and current heat exchanger exit smoke temperature value is shown by thermal resistance；
2) it by the current heat exchanger exit smoke temperature value compared with default smoke temperature value, is preset if the current smoke temperature value is equal to
Smoke temperature value, then adjusting terminates；
3) otherwise again since step 1).
Heat medium water bypass valve:
1) after presetting the input of heat medium water total flow, bypass duct heating agent water flow is controlled by flow PID controller, passes through stream
Meter shows current heat medium water total flow；
2) by the current heat medium water total flow compared with default heat medium water total flow, if the current heat medium water total flow
Equal to default heat medium water total flow, then adjusting terminates；
3) otherwise again since step 1).
Claims (1)
1. a kind of control method of heat exchanger smoke temperature automatic regulating system, it is characterised in that: heat exchanger smoke temperature automatic regulating system
Including flue gas heat-exchange unit (3), electric precipitator (4), heat medium water inlet regulating valve (1) and heat medium water bypass valve (2)；Flue gas changes
Hot device (3) is arranged before electric precipitator (4), and heat medium water water inlet pipe (5) and heat medium water outlet pipe (6) are connected to flue gas heat-exchange unit respectively
(3), heat medium water inlet regulating valve (1) be set to heat medium water water inlet pipe (5) on, heat medium water bypass valve (2) be set to heat medium water into
Between water pipe (5) and heat medium water outlet pipe (6), the junction position of heat medium water bypass valve (2) and heat medium water water inlet pipe (5)
In the side of heat medium water inlet regulating valve (1) far from flue gas heat-exchange unit (3)；The control of the heat exchanger smoke temperature automatic regulating system
Method includes the following steps:
1) after presetting flue gas heat-exchange unit (3) outlet smoke temperature value input, flue gas heat-exchange unit (3) are entered by the control of smoke temperature PID controller
Heating agent water flow, and then control flue gas heat-exchange unit (3) and export smoke temperature, and current flue gas heat-exchange unit (3) are shown by thermal resistance
Export smoke temperature value；
2) after presetting the input of heat medium water total flow, bypass duct heating agent water flow is controlled by flow PID controller, passes through flowmeter
Show current heat medium water total flow；
3) when heat exchanger exit smoke temperature is higher than default smoke temperature value, increase heat medium water inlet regulating valve (1) aperture, heat exchanger inflow
Increase, reduces heat exchanger exit smoke temperature；
4) when the increase of heat exchanger inflow, heating agent water flow is caused to rise, reduces heat medium water bypass valve (2) aperture, reduced
Heating agent water flow keeps heat medium water total flow steady to former setting value；
5) when heat exchanger exit smoke temperature is lower than default smoke temperature value, reduction heat medium water inlet regulating valve (1) aperture, heat exchanger inflow
Reduce, improves heat exchanger exit smoke temperature；
6) when the reduction of heat exchanger inflow, heating agent water flow is caused to decline, increases heat medium water bypass valve (2) aperture, improved
Heating agent water flow keeps heat medium water total flow steady to former setting value；
7) by current flue gas heat-exchange unit (3) outlet smoke temperature value compared with default smoke temperature value, if current smoke temperature value is equal to default smoke temperature
Value, then adjusting terminates；
8) it by the current heat medium water total flow compared with default heat medium water total flow, is preset if current heat medium water total flow is equal to
Heat medium water total flow, then adjusting terminates；
9) otherwise again since step 1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610747969.4A CN106440859B (en) | 2016-08-26 | 2016-08-26 | A kind of control method of heat exchanger smoke temperature automatic regulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610747969.4A CN106440859B (en) | 2016-08-26 | 2016-08-26 | A kind of control method of heat exchanger smoke temperature automatic regulating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106440859A CN106440859A (en) | 2017-02-22 |
| CN106440859B true CN106440859B (en) | 2019-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610747969.4A Active CN106440859B (en) | 2016-08-26 | 2016-08-26 | A kind of control method of heat exchanger smoke temperature automatic regulating system |
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| Country | Link |
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| CN (1) | CN106440859B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107166417B (en) * | 2017-07-10 | 2023-04-14 | 中国电建集团都江电力设备有限公司 | Minimum wall temperature control method and system for MGGH system |
| CN114234212A (en) * | 2021-11-18 | 2022-03-25 | 浙江菲达环保科技股份有限公司 | Waste heat utilization type zeolite rotating wheel catalytic oxidation VOCs treatment system and method |
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|---|---|---|---|---|
| CN201764487U (en) * | 2010-09-03 | 2011-03-16 | 山东山大华特环保工程有限公司 | Automatic temperature controlling apparatus of low pressure coal economizer |
| CN203586249U (en) * | 2013-10-15 | 2014-05-07 | 广东中节能环保有限公司 | Water medium type smoke heat exchanging system |
| CN204285497U (en) * | 2014-12-02 | 2015-04-22 | 山东建筑大学 | A kind of recirculation closed loop system for flue gas waste heat recovery |
| CN204460716U (en) * | 2014-12-11 | 2015-07-08 | 盾安（天津）节能系统有限公司 | A kind of flue gas waste heat recovery system |
| CN105571381A (en) * | 2016-02-01 | 2016-05-11 | 浙江天地环保工程有限公司 | Control system and method for heat medium water pipe type heat exchanger |
| CN205919707U (en) * | 2016-08-26 | 2017-02-01 | 浙江天地环保科技有限公司 | Heat exchanger gas temperature automatic regulating system |
-
2016
- 2016-08-26 CN CN201610747969.4A patent/CN106440859B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201764487U (en) * | 2010-09-03 | 2011-03-16 | 山东山大华特环保工程有限公司 | Automatic temperature controlling apparatus of low pressure coal economizer |
| CN203586249U (en) * | 2013-10-15 | 2014-05-07 | 广东中节能环保有限公司 | Water medium type smoke heat exchanging system |
| CN204285497U (en) * | 2014-12-02 | 2015-04-22 | 山东建筑大学 | A kind of recirculation closed loop system for flue gas waste heat recovery |
| CN204460716U (en) * | 2014-12-11 | 2015-07-08 | 盾安（天津）节能系统有限公司 | A kind of flue gas waste heat recovery system |
| CN105571381A (en) * | 2016-02-01 | 2016-05-11 | 浙江天地环保工程有限公司 | Control system and method for heat medium water pipe type heat exchanger |
| CN205919707U (en) * | 2016-08-26 | 2017-02-01 | 浙江天地环保科技有限公司 | Heat exchanger gas temperature automatic regulating system |
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| CN106440859A (en) | 2017-02-22 |
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| CP01 | Change in the name or title of a patent holder |
Address after: Hangzhou City, Zhejiang province 310012 Huaxing Road No. 99 (Hangzhou Neusoft business building) Patentee after: Zhejiang Tiandi Environmental Protection Technology Co.,Ltd. Address before: Hangzhou City, Zhejiang province 310012 Huaxing Road No. 99 (Hangzhou Neusoft business building) Patentee before: ZHEJIANG TIANDI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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Address after: No.99, Huaxing Road, Hangzhou City, Zhejiang Province (Hangzhou Neusoft venture building) Patentee after: Zhejiang Zheneng Technology Environmental Protection Group Co.,Ltd. Country or region after: China Address before: No.99, Huaxing Road, Hangzhou City, Zhejiang Province (Hangzhou Neusoft venture building) Patentee before: Zhejiang Tiandi Environmental Protection Technology Co.,Ltd. Country or region before: China |