CN208222620U - A kind of low-quality steam heating system applied to wet type cooling unit - Google Patents
A kind of low-quality steam heating system applied to wet type cooling unit Download PDFInfo
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- CN208222620U CN208222620U CN201820425198.1U CN201820425198U CN208222620U CN 208222620 U CN208222620 U CN 208222620U CN 201820425198 U CN201820425198 U CN 201820425198U CN 208222620 U CN208222620 U CN 208222620U
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Abstract
The utility model discloses a kind of low-quality steam heating systems applied to wet type cooling unit, it includes heat exchangers for district heating, heat exchangers for district heating connects intermediate pressure cylinder blow-off line, low-quality steam heating system further include: low pressure (LP) cylinder, low pressure (LP) cylinder are connect with intermediate pressure cylinder blow-off line；Several low-pressure heaters, these low-pressure heaters are connect with low pressure (LP) cylinder；Condenser, condenser are connect with low pressure (LP) cylinder；The steam inlet of at least one jet pump, each jet pump connects intermediate pressure cylinder blow-off line, and the pump orifice of each jet pump is separately connected the pipeline between each low-pressure heater and low pressure (LP) cylinder；Heater, heater are separately connected the jet port, heat exchangers for district heating and heat supply network water return pipeline of each jet pump.The utility model constructs relatively easy without carrying out low pressure (LP) cylinder transformation, using lower #7, #8 low-temperature heater steam extraction of quality, heats heat supply network recirculated water, that is, make full use of the thermal energy of low-quality steam, improve heat supply network circulating water temperature, improve unit heat capacity.
Description
Technical field
The utility model relates to a kind of heating systems, and in particular to a kind of low-quality steam heating applied to wet type cooling unit
System.
Background technique
In recent years, under the encouraging and facilitating of national energy conservation and emission reduction policy, each electricity power enterprise is having the ground for heat condition
Area carries out thermal power plant unit transformation by various technologies and increases heat capacity, meets winter city heating demands, this development has become
For inexorable trend.
Go out currently, unit heat supply transformation generallys use the punching technologies such as steam extraction and steam turbine high back pressure raising heat supply network recirculated water
Coolant-temperature gage.
Steam turbine high back pressure technology is to improve unit back pressuce by transformation low pressure (LP) cylinder and rotor or by combustion adjustment；It is air-cooled
Unit high back pressure heat supply transformation is relatively easy, and back pressure can be improved by Air-Cooling Island combustion adjustment, and wet type cooling unit is because of its operation back
Press lower, usual 4-6KPa or so, winter condition reaches rated value hereinafter, taking compared with hard-pumped, needs to carry out low pressure (LP) cylinder complicated
Tong Liao area, great in constructing amount, higher cost.
Utility model content
The utility model to solve the above-mentioned problems, to provide a kind of low-quality steam heating applied to wet type cooling unit
System.
In order to achieve the above objectives, the technical solution of the utility model is as follows:
A kind of low-quality steam heating system applied to wet type cooling unit, the low-quality steam heating system includes heat supply network
Heater, the heat exchangers for district heating connect intermediate pressure cylinder blow-off line, the low-quality steam heating system by pipeline further include:
Low pressure (LP) cylinder, the low pressure (LP) cylinder are connect by pipeline with intermediate pressure cylinder blow-off line；
Several low-pressure heaters include the #6 low-pressure heater 310, #7 low-pressure heater 320 and #8 low pressure being sequentially connected in series
Heater 330, #8 low-pressure heater 330 are connect with condenser；
Condenser, the condenser are connect by pipeline with low pressure (LP) cylinder, and the condenser also passes through pipeline and low-pressure heating
Device series connection；
The steam inlet of at least one jet pump, each jet pump connects intermediate pressure cylinder blow-off line, each spray by pipeline
The pump orifice for penetrating pump passes through pipeline respectively and connects pipeline between each low-pressure heater and low pressure (LP) cylinder；
Heater, the heater are separately connected the jet port, heat exchangers for district heating and heat supply network of each jet pump by pipeline
Water return pipeline.
In a preferred embodiment of the utility model, several low-pressure heaters include that the #6 low pressure being sequentially connected in series adds
Hot device, #7 low-pressure heater and #8 low-pressure heater, #8 low-pressure heater are connect with condenser.
In a preferred embodiment of the utility model, the heater is STEJE heater.
In a preferred embodiment of the utility model, on the pipeline between each low-pressure heater and low pressure (LP) cylinder respectively
Equipped with the first isolating valve.
In a preferred embodiment of the utility model, the pump orifice of jet pump and each low-pressure heater and low pressure (LP) cylinder
Between pipeline connection pipeline on be respectively equipped with the second isolating valve, between the steam inlet and intermediate pressure cylinder blow-off line of jet pump
Pipeline be equipped with third isolating valve, pipeline between the jet port and heater of jet pump is equipped with the 4th isolating valve.
In a preferred embodiment of the utility model, on the pipeline between heat exchangers for district heating and intermediate pressure cylinder blow-off line
Equipped with the 5th isolating valve.
The beneficial effects of the utility model are:
The utility model structure is simple, without carrying out low pressure (LP) cylinder transformation, constructs relatively easy, utilizes quality lower #7, #
Heat supply network recirculated water is heated in 8 low-temperature heater steam extractions, that is, makes full use of the thermal energy of low-quality steam, improves heat supply network circulating water temperature, mentions
High unit heat capacity.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
Face combines and is specifically illustrating, and the utility model is further described.
Referring to Fig. 1, the low-quality steam heating system provided by the utility model applied to wet type cooling unit comprising heat supply network
Heater 100, low pressure (LP) cylinder 200, several low-pressure heaters, condenser 400, at least one jet pump 500 and heater 600.
Heat exchangers for district heating 100 can connect intermediate pressure cylinder blow-off line by pipeline, and heat exchangers for district heating 100 can be with intermediate pressure cylinder
Steam discharge is that heat source heats heat supply network return water, reaches heat supply network water supply requirement.
Since the quality of the intermediate pressure cylinder steam discharge of intermediate pressure cylinder blow-off line discharge is very high, returned if being only used to heat heat supply network
Water will cause waste.
In addition, above-mentioned heating in winter when can not also implement.
The application in system heating system by being arranged low pressure (LP) cylinder 200, several low-pressure heaters, condenser 400, extremely
A few jet pump 500 and heater 600, can greatly save resource, and can also be suitble to use in winter.
Low pressure (LP) cylinder 200 connects intermediate pressure cylinder blow-off line by pipeline.
Several low-pressure heaters, these low-pressure heaters 300 are sequentially connected in series, and are specifically included the #6 low pressure being sequentially connected in series and are added
Hot device 310, #7 low-pressure heater 320 and #8 low-pressure heater 330, these low-pressure heaters 300 are connected by pipeline low respectively
Cylinder pressure 200.
Condenser 400 is separately connected #8 low-pressure heater 330 and low pressure (LP) cylinder 200 by pipeline, is with then realizing
The steam extraction step by step of each low-pressure heater 300.
Depending on actual needs, the number in the present embodiment is specially 1 to the specific number of jet pump 500, jet pump
500 steam inlet by pipeline connect intermediate pressure cylinder blow-off line, the pump orifice of jet pump pass through respectively pipeline connect it is each low
Press the pipeline between the 200 of heater 300 and low pressure (LP) cylinder.
Jet pump 500 can mix the steam extraction of intermediate pressure cylinder steam discharge and #7 low-pressure heater 320 and #8 low-pressure heater 330
It closes, the low-quality steam of mixing is then conveyed to heater 600.
By taking 300MW wet type cooling unit as an example, 400 back pressure of condenser is 4.9KPa, #8 low-pressure heater under 75% load condition
330 extraction pressure 17KPa, 58 DEG C of temperature；#7 low-pressure heater 320 extraction pressure 47KPa, 81 DEG C of temperature；400 back pressure of condenser
Lower, steam exhaust is difficult to be utilized, and passes through the #7 low-pressure heater 320 and #8 low pressure before 500 draws low pressure cylinder of jet pump, 200 steam discharge
The steam extraction of heater 330, quality is lower, using jet pump 500, can improve heat supply network by heat utilization into heat network system
Circulating water temperature.
Heater 600 is separately connected the jet port, heat exchangers for district heating 100 and heat supply network return water of jet pump 500 by pipeline
Pipeline.
Heat supply network return water is conveyed to heater 600 by heat supply network water return pipeline, and then heater 600 passes through jet pump 500 again
The low-quality steam of input is heated, and the heat supply network return water after heating is then conveyed to heat exchangers for district heating 100, heat exchangers for district heating
100, which do not work, directly carries out heat supply network water supply.
For the ease of controlling the connection between above-mentioned all parts, between each low-pressure heater 300 and low pressure (LP) cylinder 200
The first isolating valve 710 is respectively equipped on pipeline；
On the pipeline of pipeline connection between the pump orifice of jet pump 500 and each low-pressure heater 300 and low pressure (LP) cylinder 200
It is respectively equipped with the second isolating valve 720, the pipeline between the steam inlet and intermediate pressure cylinder blow-off line of jet pump 500 is equipped with third
Isolating valve 730, the pipeline between the jet port and heater 600 of jet pump 500 are equipped with the 4th isolating valve 740；
Pipeline between heat exchangers for district heating 100 and intermediate pressure cylinder blow-off line is equipped with the 5th isolating valve 750, intermediate pressure cylinder steam discharge
Pipeline is equipped with the 6th isolating valve 760.
Here is the specific work process of the application:
Low pressure (LP) cylinder 200 is closed to be isolated with first on the pipeline between #7 low-pressure heater 320 and #8 low-pressure heater 330
Valve 710 is then turned on low pressure (LP) cylinder 200 to the steam inlet of each second isolating valve 720, jet pump 500 between jet pump 500
Pipeline between intermediate pressure cylinder blow-off line is equipped with third isolating valve 730, jet pump 500 is exported to being isolated for heater 600
Valve 740, then jet pump 500 works, by the steam extraction of intermediate pressure cylinder steam discharge and #7 low-pressure heater 320 and #8 low-pressure heater 330
It is mixed, the low-quality steam of mixing is then conveyed to heater 600, make full use of its thermal energy, heat heat supply network return water, it can
The middle displacement of heat exchangers for district heating 100 is reduced, unit economy is improved.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (6)
1. a kind of low-quality steam heating system applied to wet type cooling unit, the low-quality steam heating system include that heat supply network adds
Hot device, the heat exchangers for district heating connect intermediate pressure cylinder blow-off line by pipeline, which is characterized in that the low-quality steam heating system
System further include:
Low pressure (LP) cylinder, the low pressure (LP) cylinder are connect by pipeline with intermediate pressure cylinder blow-off line；
Several low-pressure heaters, these low-pressure heaters are sequentially connected in series, these low-pressure heaters pass through pipeline and low pressure respectively
Cylinder connection；
Condenser, the condenser are connect by pipeline with low pressure (LP) cylinder, and the condenser also passes through pipeline and low-pressure heater string
Connection；
The steam inlet of at least one jet pump, each jet pump connects intermediate pressure cylinder blow-off line, each jet pump by pipeline
Pump orifice pass through pipeline respectively and connect pipeline between each low-pressure heater and low pressure (LP) cylinder；
Heater, the heater are separately connected the jet port, heat exchangers for district heating and heat supply network return water of each jet pump by pipeline
Pipeline.
2. a kind of low-quality steam heating system applied to wet type cooling unit according to claim 1, which is characterized in that if
A dry low-pressure heater includes the #6 low-pressure heater, #7 low-pressure heater and #8 low-pressure heater being sequentially connected in series, and #8 low pressure adds
Hot device is connect with condenser.
3. a kind of low-quality steam heating system applied to wet type cooling unit according to claim 1, which is characterized in that institute
Stating heater is STEJE heater.
4. a kind of low-quality steam heating system applied to wet type cooling unit according to claim 1, which is characterized in that each
The first isolating valve is respectively equipped on pipeline between a low-pressure heater and low pressure (LP) cylinder.
5. a kind of low-quality steam heating system applied to wet type cooling unit according to claim 1, which is characterized in that spray
It is respectively equipped with the second isolating valve on the pipeline for the pipeline connection penetrated between the pump orifice of pump and each low-pressure heater and low pressure (LP) cylinder,
Pipeline between the steam inlet and intermediate pressure cylinder blow-off line of jet pump is equipped with third isolating valve, the jet port of jet pump with plus
Pipeline between hot device is equipped with the 4th isolating valve.
6. a kind of low-quality steam heating system applied to wet type cooling unit according to claim 1, which is characterized in that heat
Pipeline between net heater and intermediate pressure cylinder blow-off line is equipped with the 5th isolating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820425198.1U CN208222620U (en) | 2018-03-28 | 2018-03-28 | A kind of low-quality steam heating system applied to wet type cooling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820425198.1U CN208222620U (en) | 2018-03-28 | 2018-03-28 | A kind of low-quality steam heating system applied to wet type cooling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208222620U true CN208222620U (en) | 2018-12-11 |
Family
ID=64503389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201820425198.1U Active CN208222620U (en) | 2018-03-28 | 2018-03-28 | A kind of low-quality steam heating system applied to wet type cooling unit |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488872A (en) * | 2018-03-28 | 2018-09-04 | 程琛 | A kind of low-quality steam heating system applied to wet type cooling unit |
-
2018
- 2018-03-28 CN CN201820425198.1U patent/CN208222620U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488872A (en) * | 2018-03-28 | 2018-09-04 | 程琛 | A kind of low-quality steam heating system applied to wet type cooling unit |
| CN108488872B (en) * | 2018-03-28 | 2024-03-01 | 程琛 | Low-quality steam heating system applied to wet cooling unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190827 Address after: Room 2093, Building 605 Antai Road, Situan Town, Fengxian District, Shanghai Patentee after: Shanghai Zhouhong Electric Power Engineering Technology Center Address before: Room 22-1-8, Forward Ercun, Guoqing Road, Tianjiaan District, Huainan City, Anhui Province, 2007 Patentee before: Cheng Chen |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190924 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: Room 2093, Building 605 Antai Road, Situan Town, Fengxian District, Shanghai Patentee before: Shanghai Zhouhong Electric Power Engineering Technology Center |