CN209145661U - A kind of empty clammy condensing equipment coupling energy-saving system of two-stage surface-type - Google Patents
A kind of empty clammy condensing equipment coupling energy-saving system of two-stage surface-type Download PDFInfo
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- CN209145661U CN209145661U CN201821800582.1U CN201821800582U CN209145661U CN 209145661 U CN209145661 U CN 209145661U CN 201821800582 U CN201821800582 U CN 201821800582U CN 209145661 U CN209145661 U CN 209145661U
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- cooling unit
- wet type
- heat exchanger
- air
- type cooling
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Abstract
The utility model discloses a kind of empty clammy condensing equipment coupling energy-saving systems of the two-stage surface-type for belonging to power station energy-saving field.The system relates generally to the combined operating of multiple units: No.1 wet type cooling unit, No. two wet type cooling units and air cooling unit.By two wet type cooling units and an air cooling unit coupling, the switching to wet type cooling unit may be implemented, the coupling energy-saving system can be incorporated to according to the suitable wet type cooling unit of start-up flexible choice of Power Plant；Two-stage surface-type heat exchanger is arranged, is exchanged heat more abundant, heat exchange efficiency is higher；Wet type cooling unit can use the exhaust steam residual heat of air cooling unit, so that wet type cooling unit final stage steam extraction is reduced, acting increases, and efficiency increases；The heat exchange area for increasing Air-Cooling Island when other cooling conditions are consistent can reduce the back pressure of air cooling unit, and coal consumption reduces, and heat-economy improves.In addition, coupling to the existing unit of power plant, rather than new humid-cool system or air cooling system are established, power station equipment investment is reduced.
Description
Technical field
The invention belongs to power station energy-saving equipment field, in particular to empty clammy condensing equipment coupling energy-saving system specifically relates to
And a kind of empty clammy condensing equipment coupling energy-saving system of two-stage surface-type.
Background technique
There are two types of modes for steam turbine cooling system, and one is clammy modes, and one is air-cooled modes.The former is steam exhaust and water
Carrying out heat exchange absorbs the cooled water of the waste heat in steam exhaust so that being condensed into water reaches cooling purpose, and the latter is exhaust steam residual heat
It is directly emitted in atmosphere.
In recent years, the economic sustained and rapid development in China, also increases the consumption of electric power year by year.Due to machines different in power plant
The period that group is built is different from environment, and there is also differences for used technology, it may appear that exists simultaneously in the same power plant wet
The case where cold group and air cooling unit.Since air cooling unit is averaged, back pressure is higher, so that load is relatively low, coal consumption increases, economy
It is poor；Meanwhile wet type cooling unit condensed water thermal loss is larger, also the thermal efficiency can be made relatively low.To cope with such case, now
Power plant takes the combined operating of air cooling unit and wet type cooling unit, for example increases small-sized humid-cool system by air cooling unit, or
Increase air cooling device by wet type cooling unit to be allowed to complement one another.These schemes can achieve the purpose that improve economy, but
Exhaust steam residual heat cannot still be made full use of by existing simultaneously in the power plant of air-cooled wet type cooling unit, and increase improvement cost.
In view of this, this patent proposes a kind of empty clammy condensing equipment coupling energy-saving system of two-stage surface-type, pass through two-stage
Surface-type heat exchanger combines two wet type cooling units and an air cooling unit, and the UTILIZATION OF VESIDUAL HEAT IN of air cooling unit both can be improved
Rate improves efficiency of energy utilization, and can reduce the back pressure of air cooling unit, improves heat-economy, reduces cost of electricity-generating.
Utility model content
The purpose of this utility model is that for the power plant for existing simultaneously wet type cooling unit and air cooling unit at present, wet type cooling unit
When independently running with air cooling unit, lead to that air cooling unit back pressure is higher, exhaust steam residual heat is under-utilized；Now propose one
The empty clammy condensing equipment coupling energy-saving system of kind two-stage surface-type, the condensed water of wet type cooling unit is shunted and leads to first order surface-type
Heat exchanger and second level surface-type heat exchanger, exchange heat in heat exchanger with the steam exhaust of air cooling unit, to improve steam exhaust benefit
With rate, the thermal efficiency of cycle of unit is improved, reduces coal consumption, economic benefit, environmental benefit and social benefit are very significant.
In order to achieve the above objectives, the invention adopts the following technical scheme:
A kind of empty clammy condensing equipment coupling energy-saving system of two-stage surface-type, which is characterized in that the system relates generally to more
The combined operating of a unit: No.1 wet type cooling unit, No. two wet type cooling units and air cooling unit, the No.1 wet type cooling unit steam turbine
It is connect with No.1 wet type cooling unit generator, with No.1 wet type cooling unit condenser, No.1 wet type cooling unit condensate pump, the clammy machine of No.1
Group gland heater is sequentially connected in series, No.1 wet type cooling unit condensate pump water outlet and first order surface-type heat exchanger and second level table
The water inlet of face formula heat exchanger is connected, and the water outlet and No.1 of first order surface-type heat exchanger and second level surface-type heat exchanger are wet
The entrance of cold group gland heater and No. two wet type cooling unit gland heaters is connected；No. two wet type cooling unit steam turbines and No. two it is wet
Cold set generator connection, adds with No. two wet type cooling unit condensers, No. two wet type cooling unit condensate pumps, No. two wet type cooling unit axle envelopes
Hot device is sequentially connected in series；Air-cooled steam turbine is connect with air cooling unit generator, and the low pressure (LP) cylinder steam drain of air-cooled steam turbine passes through all the way
Steam exhaust device is connect with Air-Cooling Island, and another way is connect with the air intake of first order surface-type heat exchanger, and condensed water returns in Air-Cooling Island
It flow in the hot well of steam exhaust device, hot well outlet and the air cooling unit condensate pump, air cooling unit gland heater of steam exhaust device
It is sequentially connected in series, the hydrophobic outlet of first order surface-type heat exchanger is connected to the hot well of steam exhaust device.
The steam exhaust device mainly includes corrugated-type expansion joint, throat, shell and hot well；The steam inlet of corrugated-type expansion joint
It is connected with the steam (vapor) outlet of steam turbine, in the housing built-in second level surface-type heat exchanger, the steam (vapor) outlet and hot well of Air-Cooling Island
Entrance be connected, the outlet of hot well connects with the condensate pump of air cooling unit.
The first order surface-type heat exchanger and second level surface-type heat exchanger is parallel with one another, and heat exchanger uses two-stage cloth
Mode is set, the 4th control valve control second level surface-type heat exchanger being incorporated to and cutting off, and the control of the 5th control valve enters the first order
The steam exhaust flow of surface-type heat exchanger.
The No.1 wet type cooling unit is incorporated to and is cut off by the first control valve, the second control valve and third control valve control
Operation, No. two wet type cooling units are incorporated to and are operated with excision by the 6th control valve, the 7th control valve and the control of the 8th control valve.
The utility model has the following advantages that and the utility model has the advantages that by two wet type cooling unit and the coupling of air cooling unit, can
To realize the switching to wet type cooling unit, the coupling can be incorporated to according to the suitable wet type cooling unit of start-up flexible choice of Power Plant
Close energy conserving system；Two-stage surface-type heat exchanger is arranged, is exchanged heat more abundant, heat exchange efficiency is higher；Wet type cooling unit can use
The exhaust steam residual heat of air cooling unit, so that wet type cooling unit final stage steam extraction is reduced, acting increases, and efficiency increases；When other cooling conditions
The heat exchange area for increasing Air-Cooling Island when consistent can reduce the back pressure of air cooling unit, and coal consumption reduces, and heat-economy improves；In addition,
The existing unit of power plant is coupled, rather than establishes new humid-cool system or air cooling system, power station equipment investment is reduced, economical
Property is improved.
Detailed description of the invention
Fig. 1 is a kind of empty clammy condensing equipment coupling energy-saving system schematic of two-stage surface-type.
In figure: 1- No.1 wet type cooling unit steam turbine；2- No.1 wet type cooling unit generator；3- No.1 wet type cooling unit condenser；
4- No.1 wet type cooling unit condensate pump；The first control valve of 5-；6- No.1 wet type cooling unit gland heater；The second control valve of 7-；8-
Third control valve；9- first order surface-type heat exchanger；10- air cooling unit steam turbine；11- air cooling unit generator；12- steam discharge
Device；13- corrugated-type expansion joint；14- throat；15- shell；16- hot well；17- Air-Cooling Island；18- air cooling unit condensate pump；19-
Air cooling unit gland heater；The second level 20- surface-type heat exchanger；The 4th control valve of 21-；The 5th control valve of 22-；23- bis-
Wet type cooling unit steam turbine；No. bis- wet type cooling unit generators of 24-；No. bis- wet type cooling unit condensers of 25-；No. bis- wet type cooling units of 26- are solidifying
Bear water pump；The 6th control valve of 27-；28- No.1 wet type cooling unit gland heater；The 7th control valve of 29-；The 8th control valve of 30-.
Specific embodiment
The utility model provides a kind of empty clammy condensing equipment coupling energy-saving system of two-stage surface-type, with reference to the accompanying drawing
This system working principle is described further with specific embodiment.
Fig. 1 show a kind of schematic diagram of empty clammy condensing equipment coupling energy-saving system of two-stage surface-type.
As shown in Figure 1, a kind of empty clammy condensing equipment coupling energy-saving system of two-stage surface-type, which is characterized in that the system
The combined operating of multiple units: No.1 wet type cooling unit is related generally to, No. two wet type cooling units and air cooling unit, the No.1 are clammy
Power generator turbine 1 is connect with No.1 wet type cooling unit generator 2, with No.1 wet type cooling unit condenser 3, No.1 wet type cooling unit condensed water
Pump 4, No.1 wet type cooling unit gland heater 6 are sequentially connected in series, 4 water outlet of No.1 wet type cooling unit condensate pump and first order surface-type
Heat exchanger 9 is connected with the water inlet of second level surface-type heat exchanger 20, and first order surface-type heat exchanger 9 and second level surface-type change
The water outlet of hot device 20 is connected with the entrance of No.1 wet type cooling unit gland heater 6 and No. two wet type cooling unit gland heaters 28；
No. two wet type cooling unit steamers 23) it is connect with No. two wet type cooling unit generators 24, it is wet with No. two wet type cooling unit condenser 25, two
26, No. two wet type cooling unit gland heaters 28 of cold group condensate pump are sequentially connected in series；Air-cooled steam turbine 10 and air cooling unit generate electricity
Machine 11 connects, and the low pressure (LP) cylinder steam drain of air-cooled steam turbine 10 passes through steam exhaust device 12 all the way and connect with Air-Cooling Island 17, another way and
The air intake of first order surface-type heat exchanger 9 connects, and condensed water is back in the hot well 16 of steam exhaust device 12 in Air-Cooling Island 17, arranges
The outlet of hot well 16 of vapour device 12 is sequentially connected in series with air cooling unit condensate pump 18, air cooling unit gland heater 19, the first order
The hydrophobic outlet of surface-type heat exchanger 9 is connected to the hot well 16 of steam exhaust device 12.
The steam exhaust device 12 mainly includes corrugated-type expansion joint 13, throat 14, shell 15 and hot well 16；Corrugated-type expansion joint
13 steam inlet is connected with the steam (vapor) outlet of steam turbine 10, and built-in second level surface-type heat exchanger 20, air-cooled in shell 15
The steam (vapor) outlet on island 17 is connected with the entrance of hot well 16, and the outlet of hot well 16 connects with the condensate pump 18 of air cooling unit.
The first order surface-type heat exchanger 9 and second level surface-type heat exchanger 20 is parallel with one another, and heat exchanger uses two
Grade arrangement, the 4th control valve 21 control second level surface-type heat exchanger 20 being incorporated to and cutting off, the control of the 5th control valve 22
Into the steam exhaust flow of first order surface-type heat exchanger 9.
The No.1 wet type cooling unit by the first control valve 5, the second control valve 7 and third control valve 8 control be incorporated to
Excision operation, No. two wet type cooling units are incorporated to and are cut by the 6th control valve 27, the 7th control valve 29 and the control of the 8th control valve 30
Except operation.
Its course of work are as follows: when air cooling unit run, wet type cooling unit run any or two run when, the sky is clammy
Condensing equipment coupling energy-saving system can work normally；When wet type cooling unit is in excision state, condensed water is straight after condensate pump
It connects toward gland heater, wet type cooling unit keeps original method of operation, and wet type cooling unit is in when being incorporated to state, one is logical for condensed water
Toward first order surface-type heat exchanger, another stock leads to second level surface-type heat exchanger built-in in steam exhaust device, two strands of condensed waters
It exchanges heat in heat exchanger with the steam exhaust of air cooling unit, the condensed water after heat exchange converges the gland heater for flowing back to unit；It is empty
The steam exhaust of cold group divides two-way, all the way by exchanging heat in Air-Cooling Island after steam exhaust device, leads to it after the cooling condensation of Air-Cooling Island
Gland heater, a small amount of steam exhaust of another way flow directly into first order surface-type heat exchanger, and drain recovery is to hot well after heat release condensation.
In addition, it should be noted that, specific example described in this specification, shape, the named title of components
Etc. can be different；All equivalent or simple changes done according to structure, feature and principle described in the concept of the patent of the utility model,
It is included in the protection scope of the utility model patent；Those skilled in the art of the present invention can be to described
Specific example do various modifications or additions or be substituted in a similar manner, without departing from the knot of the utility model
Structure or beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (4)
1. a kind of empty clammy condensing equipment coupling energy-saving system of two-stage surface-type, which is characterized in that the system relates generally to multiple
The combined operating of unit: No.1 wet type cooling unit, No. two wet type cooling units and air cooling unit, the No.1 wet type cooling unit steam turbine
(1) it is connect with No.1 wet type cooling unit generator (2), with No.1 wet type cooling unit condenser (3), No.1 wet type cooling unit condensate pump
(4), No.1 wet type cooling unit gland heater (6) is sequentially connected in series, No.1 wet type cooling unit condensate pump (4) water outlet and first order table
Face formula heat exchanger (9) is connected with the water inlet of second level surface-type heat exchanger (20), first order surface-type heat exchanger (9) and second
The water outlet and No.1 wet type cooling unit gland heater (6) and No. two wet type cooling unit gland heaters of grade surface-type heat exchanger (20)
(28) entrance is connected；No. two wet type cooling unit steam turbines (23) connect with No. two wet type cooling unit generators (24), clammy with No. two
Unit condenser (25), No. two wet type cooling unit condensate pumps (26), No. two wet type cooling unit gland heaters (28) are sequentially connected in series；It is empty
Cold steam turbine (10) connect with air cooling unit generator (11), and the low pressure (LP) cylinder steam drain of air-cooled steam turbine (10) passes through steam discharge all the way
Device (12) is connect with Air-Cooling Island (17), and another way is connect with the air intake of first order surface-type heat exchanger (9), Air-Cooling Island (17)
The hot well (16) that middle condensed water is back to steam exhaust device (12) is inner, and hot well (16) outlet of steam exhaust device (12) and air cooling unit are solidifying
Bear water pump (18), air cooling unit gland heater (19) is sequentially connected in series, the hydrophobic outlet connection of first order surface-type heat exchanger (9)
The hot well (16) of steam exhaust device (12).
2. the empty clammy condensing equipment coupling energy-saving system of a kind of two-stage surface-type according to claim 1, which is characterized in that
The steam exhaust device (12) mainly includes corrugated-type expansion joint (13), throat (14), shell (15) and hot well (16)；Bellow expansion
The steam inlet of section (13) is connected with the steam (vapor) outlet of steam turbine (10), the built-in second level surface-type heat exchanger in shell (15)
(20), the steam (vapor) outlet of Air-Cooling Island (17) is connected with the entrance of hot well (16), the outlet of hot well (16) and the condensation of air cooling unit
Water pump (18) connects.
3. the empty clammy condensing equipment coupling energy-saving system of a kind of two-stage surface-type according to claim 1, which is characterized in that
First order surface-type heat exchanger (9) and second level surface-type heat exchanger (20) are parallel with one another, and heat exchanger uses two stage arrangement mode,
4th control valve (21) control second level surface-type heat exchanger (20) being incorporated to and cutting off, and the control of the 5th control valve (22) enters the
The steam exhaust flow of first-surface formula heat exchanger (9).
4. the empty clammy condensing equipment coupling energy-saving system of a kind of two-stage surface-type according to claim 1, which is characterized in that
No.1 wet type cooling unit is incorporated to and is operated with excision by the first control valve (5), the second control valve (7) and third control valve (8) control,
No. two wet type cooling units are incorporated to and are grasped with excision by the 6th control valve (27), the 7th control valve (29) and the control of the 8th control valve (30)
Make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821800582.1U CN209145661U (en) | 2018-11-02 | 2018-11-02 | A kind of empty clammy condensing equipment coupling energy-saving system of two-stage surface-type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821800582.1U CN209145661U (en) | 2018-11-02 | 2018-11-02 | A kind of empty clammy condensing equipment coupling energy-saving system of two-stage surface-type |
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| Publication Number | Publication Date |
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| CN209145661U true CN209145661U (en) | 2019-07-23 |
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| CN201821800582.1U Expired - Fee Related CN209145661U (en) | 2018-11-02 | 2018-11-02 | A kind of empty clammy condensing equipment coupling energy-saving system of two-stage surface-type |
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| CN (1) | CN209145661U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287812A (en) * | 2020-02-23 | 2020-06-16 | 刘希浩 | Production process for improving thermal efficiency of whole thermal power plant |
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2018
- 2018-11-02 CN CN201821800582.1U patent/CN209145661U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287812A (en) * | 2020-02-23 | 2020-06-16 | 刘希浩 | Production process for improving thermal efficiency of whole thermal power plant |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190723 Termination date: 20201102 |