CN106440859A - Heat exchanger smoke temperature automatic adjusting system and control method - Google Patents
Heat exchanger smoke temperature automatic adjusting system and control method Download PDFInfo
- Publication number
- CN106440859A CN106440859A CN201610747969.4A CN201610747969A CN106440859A CN 106440859 A CN106440859 A CN 106440859A CN 201610747969 A CN201610747969 A CN 201610747969A CN 106440859 A CN106440859 A CN 106440859A
- Authority
- CN
- China
- Prior art keywords
- medium water
- heat medium
- heat exchanger
- cigarette temperature
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
Abstract
The invention relates to a tubular heat exchanger smoke temperature automatic adjusting system. The system comprises a smoke heat exchanger, an electric precipitator, a heating medium water inlet adjusting valve and a heating medium water bypass adjusting valve; the smoke heat exchanger is arranged in front of the electric precipitator, a heating medium water inlet pipe and a heating medium water outlet pipe are connected to the smoke heat exchanger, the heating medium water inlet adjusting valve is arranged on the heating medium water inlet pipe, the heating medium water bypass adjusting valve is arranged between the heating medium water inlet pipe and the heating medium water outlet pipe, and the connecting position of the heating medium water bypass adjusting valve and the heating medium water inlet pipe is located on the side, away from the smoke heat exchanger, of the heating medium water inlet adjusting valve. The system has the beneficial effects that the outlet smoke temperature of the smoke heat exchanger of a tubular heat exchanger is automatically controlled, meanwhile, stable running of a heating medium water system is ensured, the pressure of a heating medium water pipeline is ensured, the system is easy to control, and stable in running, safety risks are reduced, and the performance of the tubular heat exchanger is improved.
Description
Technical field
The invention belongs to heat exchanger fibre selection technical field, more specifically, it relates to a kind of pipe heat exchanger cigarette temperature certainly
Dynamic regulation system and control method.
Background technology
Pipe heat exchanger is to solve high-temperature flue gas to discharge the master having a negative impact electric power factory equipment, nearby residents and environment
Want approach, be also the Main Means improving efficiency of dust collection simultaneously.Pipe heat exchanger passes through heat medium water medium, absorbs high-temperature flue gas
Heat, reduces flue-gas temperature, improves dust collection efficiency.At present, pipe heat exchanger fibre selection does not forms system, perfect automatic
Control mode, easily causes the fluctuation of heat exchanger cigarette temperature excessive, the problem such as heat medium water system pressure, instability of flow.How to realize changing
Automatically controlling of pipe heat exchanger cigarette temperature, ensures heat medium water system stable operation simultaneously, becomes the problem compeling highly necessary to need to solve.
Content of the invention
It is an object of the invention to for the deficiencies in the prior art, provide and a kind of realize automatically controlling of cigarette temperature, improve dedusting
Efficiency, it is ensured that the pipe heat exchanger cigarette temperature automatic regulating system of heat medium water system stable operation and control method.
For realizing above-mentioned technical purpose, present invention employs techniques below scheme：This pipe heat exchanger cigarette temperature is adjusted automatically
Joint system, including flue gas heat-exchange unit, electric cleaner, heat medium water inlet regulating valve and heat medium water bypass valve；Flue gas heat-exchange unit
Before being arranged on electric cleaner, heat medium water water inlet pipe and heat medium water outlet pipe are connected to flue gas heat-exchange unit, heat medium water water inlet regulation respectively
Valve is located on heat medium water water inlet pipe, and heat medium water bypass valve is located between heat medium water water inlet pipe and heat medium water outlet pipe, heating agent
Water bypass valve is positioned at the side away from flue gas heat-exchange unit for the heat medium water inlet regulating valve in the junction of heat medium water water inlet pipe.
The control method of pipe heat exchanger cigarette temperature automatic regulating system, comprises the steps：
1), after presetting the input of cooler outlet cigarette temperature value, the heating agent current of cooler are entered by the control of cigarette temperature PID controller
Amount, and then control cooler outlet cigarette temperature, and show current cooler outlet cigarette temperature value by thermal resistance；
2) after presetting the input of heat medium water total flow, flow PID controller is controlled bypass duct heat medium water flow, by stream
Gauge shows current heat medium water total flow；
3) when heat exchanger exit cigarette temperature is higher than presetting cigarette temperature value, increasing heat medium water inlet regulating valve aperture, heat exchanger is intake
Amount increases, and reduces heat exchanger exit cigarette temperature；
4) when heat exchanger inflow increases, cause heat medium water flow to rise, reduce heat medium water bypass valve aperture, reduce
Heat medium water flow, to former setting value, keeps heat medium water total flow steady；
5) when heat exchanger exit cigarette temperature is less than presetting cigarette temperature value, reducing heat medium water inlet regulating valve aperture, heat exchanger is intake
Amount reduces, and improves heat exchanger exit cigarette temperature；
6) when heat exchanger inflow reduces, cause heat medium water flow reduction, increase heat medium water bypass valve aperture, improve
Heat medium water flow, to former setting value, keeps heat medium water total flow steady；
7) current cooler outlet cigarette temperature value is compared with default cigarette temperature value, if current cigarette temperature value is equal to preset cigarette temperature value,
Then heat medium water inlet regulating valve regulation terminates；
8) described current heat medium water total flow is compared with default heat medium water total flow, if current heat medium water total flow is equal to
Preset heat medium water total flow, then heat medium water bypass valve regulation terminates；
9) otherwise again from step 1) from the beginning of.
Beneficial effects of the present invention：The present invention realizes automatically controlling of pipe heat exchanger flue gas heat-exchange unit outlet cigarette temperature, with
When ensure heat medium water system stable operation, it is ensured that heat medium water loine pressure, make system easily controllable, even running, reduce safety
Risk, improves pipe heat exchanger performance.
Brief description
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 reference numerals：Heat medium water inlet regulating valve the 1st, heat medium water bypass valve the 2nd, flue gas heat-exchange unit the 3rd, electric cleaner
4th, heat medium water water inlet pipe the 5th, heat medium water outlet pipe 6.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described further.The explanation of following embodiment is only intended to help to understand this
Invention.It should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention, also
Can carry out some improvement and modification to the present invention, these improve and modify the protection domain also falling into the claims in the present invention
In.
For realizing above-mentioned technical purpose, present invention employs techniques below scheme：This pipe heat exchanger cigarette temperature is adjusted automatically
Joint system, including flue gas heat-exchange unit the 3rd, electric cleaner the 4th, heat medium water inlet regulating valve 1 and heat medium water bypass valve 2；Flue gas changes
Before hot device 3 is arranged on electric cleaner 4, 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 located on heat medium water water inlet pipe 5, and heat medium water bypass valve 2 is located at heat medium water water inlet pipe 5 and heat medium water water outlet
Between pipe 6, heat medium water bypass valve 2 is positioned at heat medium water inlet regulating valve 1 away 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 cigarette temperature automatic regulating system, comprises the steps：
1), after presetting the input of cooler outlet cigarette temperature value, the heating agent current of cooler are entered by the control of cigarette temperature PID controller
Amount, and then control cooler outlet cigarette temperature, and show current cooler outlet cigarette temperature value by thermal resistance；
2) after presetting the input of heat medium water total flow, flow PID controller is controlled bypass duct heat medium water flow, by stream
Gauge shows current heat medium water total flow；
3) when heat exchanger exit cigarette temperature is higher than presetting cigarette temperature value, increasing heat medium water inlet regulating valve 1 aperture, heat exchanger is intake
Amount increases, and reduces heat exchanger exit cigarette temperature；
4) when heat exchanger inflow increases, cause heat medium water flow to rise, reduce heat medium water bypass valve 2 aperture, fall
Low heating agent discharge, to former setting value, keeps heat medium water total flow steady；
5) when heat exchanger exit cigarette temperature is less than presetting cigarette temperature value, reducing heat medium water inlet regulating valve 1 aperture, heat exchanger is intake
Amount reduces, and improves heat exchanger exit cigarette temperature；
6) when heat exchanger inflow reduces, cause heat medium water flow reduction, increase heat medium water bypass valve 2 aperture, carry
High heat medium water flow, to former setting value, keeps heat medium water total flow steady；
7) current cooler outlet cigarette temperature value is compared with default cigarette temperature value, if current cigarette temperature value is equal to preset cigarette temperature value,
Then heat medium water inlet regulating valve 1 regulation terminates；
8) described current heat medium water total flow is compared with default heat medium water total flow, if current heat medium water total flow is equal to
Preset heat medium water total flow, then heat medium water bypass valve 2 regulation terminates；
9) otherwise again from step 1) from the beginning of.
With reference to Fig. 2 and Fig. 3：The control of heat medium water inlet regulating valve and heat medium water bypass valve is as follows respectively：
Heat medium water inlet regulating valve：
1), after presetting the input of heat exchanger exit cigarette temperature value, the heating agent current of heat exchanger are entered by the control of cigarette temperature PID controller
Amount, and then control heat exchanger exit cigarette temperature, and show current heat exchanger exit cigarette temperature value by thermal resistance；
2) described current heat exchanger exit cigarette temperature value is compared with default cigarette temperature value, if described current cigarette temperature value is equal to preset
Cigarette temperature value, then regulation terminates；
3) otherwise again from step 1) from the beginning of.
Heat medium water bypass valve：
1) after presetting the input of heat medium water total flow, flow PID controller is controlled bypass duct heat medium water flow, by stream
Gauge shows current heat medium water total flow；
2) described current heat medium water total flow is compared with default heat medium water total flow, if described current heat medium water total flow
Be equal to preset heat medium water total flow, then regulation terminates；
3) otherwise again from step 1) from the beginning of.
Claims (2)
1. a pipe heat exchanger cigarette temperature automatic regulating system, it is characterised in that：Including flue gas heat-exchange unit (3), electric cleaner
(4), heat medium water inlet regulating valve (1) and heat medium water bypass valve (2)；Flue gas heat-exchange unit (3) is arranged on electric cleaner (4)
Before, 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 inlet regulating valve (1) respectively
Being located on heat medium water water inlet pipe (5), heat medium water bypass valve (2) is located at heat medium water water inlet pipe (5) and heat medium water outlet pipe (6)
Between, heat medium water bypass valve (2) in the junction of heat medium water water inlet pipe (5) be positioned at heat medium water inlet regulating valve (1) away from
The side of flue gas heat-exchange unit (3).
2. the control method of pipe heat exchanger cigarette temperature automatic regulating system according to claim 1, it is characterised in that include
Following steps：
1), after presetting the input of cooler outlet cigarette temperature value, entered the heat medium water flow of cooler by the control of cigarette temperature PID controller, enter
And control cooler outlet cigarette temperature, and show current cooler outlet cigarette temperature value by thermal resistance；
2), after presetting the input of heat medium water total flow, flow PID controller is controlled bypass duct heat medium water flow, passes through flowmeter
Show current heat medium water total flow；
3) when heat exchanger exit cigarette temperature is higher than presetting cigarette temperature value, heat medium water inlet regulating valve (1) aperture, heat exchanger inflow are increased
Increase, reduce heat exchanger exit cigarette temperature；
4) when heat exchanger inflow increases, cause heat medium water flow to rise, reduce heat medium water bypass valve (2) aperture, reduce
Heat medium water flow, to former setting value, keeps heat medium water total flow steady；
5) when heat exchanger exit cigarette temperature is less than presetting cigarette temperature value, heat medium water inlet regulating valve (1) aperture, heat exchanger inflow are reduced
Reduce, improve heat exchanger exit cigarette temperature；
6) when heat exchanger inflow reduces, cause heat medium water flow reduction, increase heat medium water bypass valve (2) aperture, improve
Heat medium water flow, to former setting value, keeps heat medium water total flow steady；
7) current cooler outlet cigarette temperature value is compared with default cigarette temperature value, if current cigarette temperature value is equal to preset cigarette temperature value, then adjust
Section end；
8) described current heat medium water total flow is compared with default heat medium water total flow, if current heat medium water total flow is equal to preset
Heat medium water total flow, then regulation terminates；
9) otherwise again from step 1) from the beginning of.
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 true CN106440859A (en) | 2017-02-22 |
| CN106440859B CN106440859B (en) | 2019-02-26 |
Family
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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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166417A (en) * | 2017-07-10 | 2017-09-15 | 都江电力设备厂 | A kind of new MGGH systems minimum wall temperature control method and system |
Citations (6)
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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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166417A (en) * | 2017-07-10 | 2017-09-15 | 都江电力设备厂 | A kind of new MGGH systems minimum wall temperature control method and system |
| 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 |
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| Publication number | Publication date |
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| CN106440859B (en) | 2019-02-26 |
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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. |