CN205939809U - A cold junction comprehensive energy -saving system for thermal power factory - Google Patents
A cold junction comprehensive energy -saving system for thermal power factory Download PDFInfo
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- CN205939809U CN205939809U CN201620874479.6U CN201620874479U CN205939809U CN 205939809 U CN205939809 U CN 205939809U CN 201620874479 U CN201620874479 U CN 201620874479U CN 205939809 U CN205939809 U CN 205939809U
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- heat exchanger
- pipe heat
- condensate
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000000498 cooling water Substances 0.000 claims abstract description 13
- 238000011084 recovery Methods 0.000 claims abstract description 8
- 238000005057 refrigeration Methods 0.000 claims abstract description 4
- 239000006200 vaporizer Substances 0.000 claims description 18
- 210000004907 gland Anatomy 0.000 claims description 9
- 239000000284 extract Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims 1
- 238000001704 evaporation Methods 0.000 abstract description 4
- 230000008020 evaporation Effects 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000009835 boiling Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000007710 freezing Methods 0.000 abstract 1
- 230000008014 freezing Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The utility model discloses a cold junction comprehensive energy -saving system for thermal power factory, capital equipment include evaporimeter, first order steam ejector, second level steam ejector etc. First order tubular heat exchanger, second level tubular heat exchanger etc.. The utility model discloses an evaporation tank makes the water in the evaporimeter evaporate at the low boiling through the steam ejector evacuation, takes away the temperature of heat in order to reduce the circulating water, regard as the cooling water with the condensate water, through heat to the condensate system of heat exchange mode recovery assistance vapour and circulating water return water, and then make power plant's effectiveness of regenerator obtain improving. The utility model discloses avoid utilizing in traditional design the electric energy obtain the huge consumption of refrigeration water, realized to assist heat recovery's in vapour and the circulating water return water purpose again, avoidd in traditional design the heat waste that this part heat can only the heat transfer of by freezing tower causes, belonged to two -way energy -concerving and environment -protective comprehensive utilization.
Description
Technical field
This utility model is related to a kind of energy conserving system and in particular to a kind of cold end comprehensive energy-saving system in thermal power plant.
Background technology
In thermal power plant, cold end system as one of requisite system of power plant, the work of each equipment in system
Situation affects the power of unit not only by back pressure, and affects station service by subsidiary engine power consumption.Therefore, from power plant cold end system
System is set about, and improves the cold end performance of unit, realizes economy optimization and runs, puts into little, instant effect, is power plant for energy conservation consumption reduction, carries
High unit heat economy, realize the optimal path of maximizing the benefits.
In traditional design, gland heater, low plus etc. heat transmission equipment simply steam condensation is become Water Sproading, and in steam
Heat all excluded by cooling tower heat exchange, cause great energy waste.In addition, the weight as impact cold end system efficiency
Want one of factor, the control of cooling water temperature seems especially prominent.The application of chilled water can effectively improve condenser, axle envelope heating
Device, low plus etc. heat exchange efficiency, and then so that the vacuum of unit is improved, coal consumption reduction.But traditional obtains chilled water with electric energy
Mode high cost, and have influence on the station service power consumption rate of whole power plant.How to obtain chilled water using certain means, become
The problem of our researchs.
CN103334969A (publication date is on October 02nd, 2013) discloses one kind can make condenser vacuum tie up all the time
Hold in high-caliber modified model condenser vacuum system, it adopts steam jet ejector individually to control single condenser, or controls
Several condensers being in parallel, the port of export of condenser is connected on water ring vacuum pump, the export pipeline of water ring vacuum pump
Upper connection constitutes the steam-water separator of vacuum system, work liquid heat exchanger with it.
Although the using effect of above-mentioned prior art is preferably it is also possible to meet the needs of most clients no matter
From principle or in application, all there is very big room for promotion：Such as from existing recirculated water extract heat so that
Circulating water temperature is reduced；How to obtain a large amount of chilled water while circulating water cooling；How will obtain from recirculated water
Heat be used for heat-setting water, and by heating after condensate returns on the premise of not increasing condensate pump output coagulate
Bear water system.
By the cold end energy-conservation of whole power plant from unidirectional using being changed to comprehensively utilize so that economical, the safety of whole unit
The aspects such as reliability obtain certain improvement and optimization, and this original intention exactly of the present utility model is located.
Utility model content
For the above-mentioned technical problem overcoming prior art to exist, the present inventor is through further investigation, there is provided a kind of structure
Simply, the cold end comprehensive energy-saving system with excellent in economic efficiency and stability that heat energy recovery rate height, heat integration recycle.
This utility model reaches refrigeration purpose by reduction vaporization mode, extracts heat, can return this heat by mode of heating again
To condensate system, really realize the purpose of thermal power plant cold end synthesis energy saving.
This utility model is achieved through the following technical solutions, a kind of cold end comprehensive energy-saving system for thermal power plant,
Including：Using recirculated water as the refrigeration unit of heat transferring medium, using condensate as the heat recovery unit of cooling water source；With circulation
The circulating water line that water system connects, the power steam pipeline connecting with auxiliary steam；The cooling water pipeline of heat recovery unit
It is parallel to the condensate line of gland heater；It is characterized in that：Also include vaporizer, first order steam jet ejector, the second level
Steam jet ejector, first order pipe heat exchanger, second level pipe heat exchanger；Described first order steam jet ejector and described evaporation
Device, described power steam pipeline are connected；The outlet of described first order steam jet ejector is connected to described first order pipe type heat transfer
At the vapour side entrance of device；Described second level steam jet ejector respectively with the vapour side outlet of described first order pipe heat exchanger, described
Power steam pipeline is connected, and the outlet of described second level steam jet ejector is connected to the vapour side of described second level pipe heat exchanger
Porch；The vapour side outlet of described second level pipe heat exchanger is discharged into air；Described first order pipe heat exchanger, second level tubular type
Heat exchanger adopts condensate as cooling water, extracts the heat of auxiliary vapour and recirculated water backwater by heat exchange mode, and returns condensation
Water system, described first order pipe heat exchanger, the condensing hot air furnace of second level pipe heat exchanger are to condenser hotwell.
Preferably, described first order pipe heat exchanger, the cooling water pipeline of described second level pipe heat exchanger are parallel to and " coagulate
Bear water pump → gland heater → low-pressure heater " pipeline above, not additionally increase condensate pump output loading premise
Under enable by from vaporizer extract out steam and power steam in heat condensate is transferred to by heat exchange mode,
Condensate returns condensate system (home position is between gland heater and low-pressure heater), and realizing will be in full for auxiliary vapour heat
The purpose reclaiming.
Preferably, described vaporizer passes through low pressure evaporation technique, and recirculated water backwater heat recovery is realized power plant's cold end section
Can transform, and obtain chilled water.
Preferably, the water side entrance end of described first order pipe heat exchanger and second level pipe heat exchanger is all from condensation water system
System intercepts condensate, returns again to condensate system after heat exchange.
Compared with prior art, the beneficial effects of the utility model are as follows：
(1) this utility model reduces the boiling point of internal water by multistage steam ejector to vaporizer evacuation, reaches
The water within vaporizer is made to be evaporated under reduced pressure, taking away substantial amounts of heat using evaporation makes circulating water temperature be reduced, and evaporates simultaneously
Produce inside device and complete liquid after heat exchange in a large number, complete that liquid temp is very low, become can electric power supply plant application chilled water.
(2) pipe heat exchanger of the present utility model adopts condensate as cooling water, and condensate is returned by way of heat exchange
Receive the heat in the auxiliary vapour that brings of steam jet ejector and vaporizer, return again to condensate system, make the effectiveness of regenerator of heat regenerative system
It is improved, adopt recirculated water or opened water as cooling water different from conventional vapor injection vacuum system pipe heat exchanger, keep away
The loss of heat is led to by cooling down tower cooler again after having exempted from recirculated water or opened water temperature rise.
(3) nucleus equipment vaporizer of the present utility model, steam jet ejector and pipe heat exchanger no-rotary part, do not consume
Electricity, stable, improve system economy and the safety of whole power plant, have energy-saving, safe and reliable to operation, exempt from tie up
The advantage of shield.
Brief description
Fig. 1 is structural representation of the present utility model.
In figure：1 is circulating water line, 2 is power steam pipeline, 3 is vaporizer, 4 is condensate pump, 5 is axle envelope heating
Device, 6 be low-pressure heater, 7-1 be first order steam jet ejector, 7-2 be second level steam jet ejector, 8-1 be first order tubular type
Heat exchanger, 8-2 be second level pipe heat exchanger, 9 be emptying, 10-1 and 10-2 be condenser hotwell, 11 be vaporizer moisturizing, 12
Export for chilled water, 13 is condensate line.
Specific embodiment
With reference to specific embodiment, this utility model is described in detail.Following examples will be helpful to this area
Technical staff further understands this utility model, but does not limit this utility model in any form.It should be pointed out that to ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, some deformation can also be made and improve.
These broadly fall into protection domain of the present utility model.
Cold end comprehensive energy-saving system for thermal power plant as shown in Figure 1, including：The circulation connecting with vaporizer 3
Power steam pipeline 2 that water lines 1 are connected with auxiliary steam, the condensate line 13 being parallel to gland heater 5, the first order
Steam jet ejector 7-1, second level steam jet ejector 7-2, first order pipe heat exchanger 8-1, second level pipe heat exchanger 8-2, solidifying
Bear water pump 4, gland heater 5 and low-pressure heater 6；First order steam jet ejector 7-1 respectively with vaporizer 3, power steam pipe
Road 2 is connected, and the outlet of first order steam jet ejector 7-1 is connected at the vapour side entrance of first order pipe heat exchanger 8-1；Second
Level steam jet ejector 7-2 is connected with the vapour side outlet of first order pipe heat exchanger 7-1, power steam pipeline 2 respectively, the second level
The outlet of steam jet ejector 7-2 is connected at the vapour side entrance of second level pipe heat exchanger 8-2, second level pipe heat exchanger 8-2
Vapour side outlet be discharged into air (emptying 9), first order pipe heat exchanger 8-1, the cooling water pipeline of second level pipe heat exchanger 8-2
It is parallel to the top of condensate line 13 (pipeline of condensate pump 4 → gland heater, 5 → low-pressure heater 6), by heat exchange
Temperature rise returns again to condensate system, condensing hot air furnace to condenser hotwell 10-1 and 10-2, when vaporizer 3 water level inside is too low,
Device moisturizing 11 can be evaporated, vaporizer 3 is produced by reduction vaporization and completes liquid in a large number, be available for chilled water output 12.
First order steam jet ejector, second level steam jet ejector, with steam as dynamic medium, are produced super by power jet
Velocity of sound jet, causes vacuum in head chamber, extracts vaporizer, the vapour gas mixture in first order pipe heat exchanger respectively,
The vapour gas mixture being drawn out of in power steam and vaporizer enters pipe heat exchanger, and pipe heat exchanger is carried out cold by condensate
But, the heat in condensate is brought by heat exchange form recovered steam ejector auxiliary vapour and vaporizer, to condensate system, is managed
The condensing hot air furnace of formula heat exchanger is to condenser hotwell.
Above specific embodiment of the utility model is described.It is to be appreciated that this utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make various modifications or modification within the scope of the claims,
This has no effect on flesh and blood of the present utility model.
Claims (3)
1. a kind of cold end comprehensive energy-saving system for thermal power plant, including：Using recirculated water as the refrigeration list of heat transferring medium
Unit, using condensate as the heat recovery unit of cooling water source；The circulating water line connecting with circulation, with auxiliary steam
The power steam pipeline connecting；The cooling water pipeline of heat recovery unit is parallel to the condensate line of gland heater；It is special
Levy and be：Also include vaporizer, first order steam jet ejector, second level steam jet ejector, first order pipe heat exchanger, the second level
Pipe heat exchanger；Described first order steam jet ejector is connected with described vaporizer, described power steam pipeline；The described first order
The outlet of steam jet ejector is connected at the vapour side entrance of described first order pipe heat exchanger；Described second level steam jet ejector divides
It is not connected with the vapour side outlet of described first order pipe heat exchanger, described power steam pipeline, described second level steam sprays
The outlet of device is connected at the vapour side entrance of described second level pipe heat exchanger；The vapour side outlet of described second level pipe heat exchanger
It is discharged into air；Described first order pipe heat exchanger, second level pipe heat exchanger adopt condensate as cooling water, by heat exchange side
Formula extracts the heat of auxiliary vapour and recirculated water backwater, and returns condensate system, described first order pipe heat exchanger, second level tubular type
The condensing hot air furnace of heat exchanger is to condenser hotwell.
2. as claimed in claim 1 a kind of cold end comprehensive energy-saving system for thermal power plant it is characterised in that：Described
One-level pipe heat exchanger, the cooling water pipeline of described second level pipe heat exchanger be parallel to " condensate pump → gland heater →
Above the pipeline of low-pressure heater ".
3. as claimed in claim 1 or 2 a kind of cold end comprehensive energy-saving system for thermal power plant it is characterised in that：Institute
State first order pipe heat exchanger and the water side entrance end of second level pipe heat exchanger all intercepts condensate, heat exchange from condensate system
After return again to condensate system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620874479.6U CN205939809U (en) | 2016-08-12 | 2016-08-12 | A cold junction comprehensive energy -saving system for thermal power factory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620874479.6U CN205939809U (en) | 2016-08-12 | 2016-08-12 | A cold junction comprehensive energy -saving system for thermal power factory |
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| Publication Number | Publication Date |
|---|---|
| CN205939809U true CN205939809U (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620874479.6U Active CN205939809U (en) | 2016-08-12 | 2016-08-12 | A cold junction comprehensive energy -saving system for thermal power factory |
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| Country | Link |
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| CN (1) | CN205939809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989429A (en) * | 2017-05-10 | 2017-07-28 | 程琛 | Exhaust steam of electric power plant waste heat recovery heating system |
-
2016
- 2016-08-12 CN CN201620874479.6U patent/CN205939809U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989429A (en) * | 2017-05-10 | 2017-07-28 | 程琛 | Exhaust steam of electric power plant waste heat recovery heating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180322 Address after: 201802, No. 4268, No. 2396 South Main Road, Shanghai, Jiading District. A Patentee after: Shanghai Shsurfer Electric Power Technique Co. , Ltd. Address before: Anhui province Huainan city 232000 National Road, tianjia'an District Village striker 22-1-8 room Patentee before: Cheng Jinrui |
|
| TR01 | Transfer of patent right |