CN205878326U - Thermal power plant high back pressure heat supply heat supply network return water temperature control system - Google Patents
Thermal power plant high back pressure heat supply heat supply network return water temperature control system Download PDFInfo
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- CN205878326U CN205878326U CN201620383419.4U CN201620383419U CN205878326U CN 205878326 U CN205878326 U CN 205878326U CN 201620383419 U CN201620383419 U CN 201620383419U CN 205878326 U CN205878326 U CN 205878326U
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- heat supply
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Abstract
The utility model relates to a thermal power plant high back pressure heat supply heat supply network return water temperature control system, utilize the system including low pressure jar, condenser, heat supply network peak load calorifier, plate heat exchanger, heat supply network return water temperature. Plate heat exchanger establishes ties on heat supply network wet return way, utilizes the low temperature running water to carry out the heat transfer to it, controls heat supply network return water temperature through adjusting valve control low temperature discharge, guarantees high back pressure heat supply unit's operation safety. The low temperature running water can be used to clean water, energy saving and emission reduction after the heat transfer of high temperature heat supply network return water.
Description
Technical field
This utility model relates to a kind of Thermal Power Station high back pressure heat supply heat supply network return water temperature control system.
Background technology
Recently as country, energy-saving and emission-reduction being required, dynamics is continuously increased, the popularization of various energy-conserving and emission-cutting technologies should
With, high back pressure heat supply process is a kind of emerging heat supply process, and core technology is to utilize low pressure (LP) cylinder exhausted spare heat heating heat supply network to follow
Ring water, utilizes Turbine Cold Junction to lose heat supply, it is achieved Turbine Cold Junction loss is the heating system of zero.The visitor of this heat supply process
Sight condition is to have enough area of heat-supply services and a certain amount of heat supply network recirculated water to take away the latent heat of vaporization of low pressure (LP) cylinder, it is ensured that high back pressure
The safe and stable operation of retrofitted unit.But, it is to constrain at limited area of heat-supply service and relatively small number of heat supply network quantity of circulating water
The popularization of high back pressure heat supply renovation technique.When heat supply network circulating water flow is less, in identical exhaust casing waste heat and identical confession
On the premise of hot side is long-pending, causes heat supply network recirculated water return water temperature higher, affect the operation safety of High Back Pressure Steam Turbine Units.
Because above-mentioned defect, the design people, the most in addition research and innovation, to founding a kind of Thermal Power Station highback
Pressure heat supply heat supply network return water temperature control system so that it is have more the value in industry.
Utility model content
For solving above-mentioned technical problem, the purpose of this utility model is to provide a kind of to be followed at limited area of heat-supply service and heat supply network
In the case of the ring water yield, serial plate type heat exchanger on heat supply network recirculated water water return pipeline, utilize low-temperature water source to carry out heat exchange, it is achieved
Reduce the purpose of hot net water backwater
This utility model Thermal Power Station high back pressure heat supply heat supply network return water temperature control system, including: intermediate pressure cylinder, low pressure
Cylinder, electromotor, the rotor of intermediate pressure cylinder, the rotor of low pressure (LP) cylinder, the rotor coaxial driving of electromotor, the venthole of medium pressure cylinder leads to
Crossing the air intake of gas pipeline and described low pressure (LP) cylinder, described gas pipeline is provided with control valve；Also include condenser, described low
The cylinder pressure outlet inlet communication by aqueduct Yu condenser, described connection condenser is provided with hydrophobic outlet；
The heat supply phase, also including heat supply network peak load calorifier, the venthole of medium pressure cylinder is by hot gas path connection heat supply network point
Peak heater；
Heat supply network return water system is connected with the water inlet of condenser by heat supply network water return pipeline, and the outlet of condenser is by warm
The import of aquaporin connection heat supply network peak load calorifier, the outlet heat supply network water system of heat supply network peak load calorifier；In described heat
Being in series with plate type heat exchanger on net water return pipeline, the water inlet of described plate type heat exchanger by cold water pipes connection backwater cooling is
System, described backwater cooling system is less than the water source of described return water temperature by cold water pipes output temperature, and water source changes through board-like
The outlet output of hot device.
Further, the backwater cooling system described in connection is provided with water with the cold water pipes of the water inlet of plate type heat exchanger
Stream valve.
Further, backwater cooling system is tap water supply system.
Further, the pipeline connecting described cryophorus and described plate type heat exchanger is provided with backwater valve.
Further, the non-heat supply phase, also include cooling tower, the water inlet of the outlet connection cooling tower of described condenser,
The outlet of the water inlet connection cooling tower of described condenser.
By such scheme, this utility model Thermal Power Station high back pressure heat supply heat supply network return water temperature control system at least has
Have the advantage that
1, the feasibility of high back pressure heat supply and safety under the conditions of limited area of heat-supply service and heat supply network quantity of circulating water.
2, serial plate type heat exchanger on heat supply network recirculated water water return pipeline, utilizes low temperature water source from the beginning to reduce heat supply network recirculated water
Return water temperature.
3, low temperature water source from the beginning is used as cleaning water after heat supply network recirculated water backwater heat exchange.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and can being practiced according to the content of description, below with preferred embodiment of the present utility model and coordinate accompanying drawing detailed
Describe in detail bright as after.
Accompanying drawing explanation
The winter operation flow process of Tu1Shi this utility model Thermal Power Station high back pressure heat supply heat supply network return water temperature control system
Figure；
The summer operation flow process of Tu2Shi this utility model Thermal Power Station high back pressure heat supply heat supply network return water temperature control system
Figure；
Intermediate pressure cylinder 1, control valve 2, low pressure (LP) cylinder 3, condenser 4, heat supply network peak load calorifier 5, backwater valve 6, backwater valve
7, plate type heat exchanger 8, current valve 9, return water temperature utilizes system 10, electromotor 11, cooling tower 12.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, detailed description of the invention of the present utility model is described in further detail.Below
Embodiment is used for illustrating this utility model, but is not limited to scope of the present utility model.
If Fig. 1 is to shown in 2, the present embodiment Thermal Power Station high back pressure heat supply heat supply network return water temperature control system, including: in
Cylinder pressure 1, low pressure (LP) cylinder 3, electromotor 11, the rotor of intermediate pressure cylinder, the rotor of low pressure (LP) cylinder, electromotor rotor coaxial drive, described in
The venthole of cylinder pressure is by the air intake of gas pipeline with described low pressure (LP) cylinder, and described gas pipeline is provided with control valve 2；Also wrap
Including condenser 4, the described low pressure (LP) cylinder outlet inlet communication by aqueduct Yu condenser, described connection condenser is provided with thin
Water outlet；
The heat supply phase, also including heat supply network peak load calorifier 5, the venthole of medium pressure cylinder is by hot gas path connection heat supply network point
Peak heater；
Heat supply network return water system is connected with the water inlet of condenser by heat supply network water return pipeline, and the outlet of condenser is by warm
The import of aquaporin connection heat supply network peak load calorifier, the outlet heat supply network water system of heat supply network peak load calorifier；In described heat
Being in series with plate type heat exchanger 8 on net water return pipeline, the water inlet of described plate type heat exchanger is lowered the temperature by cold water pipes connection backwater
System, described backwater cooling system is less than the water source of described return water temperature, backwater cooling system by cold water pipes output temperature
For tap water supply system, water source utilizes system 10 through the outlet output of plate type heat exchanger to return water temperature.
Backwater cooling system described in connection is provided with current valve 9 with the cold water pipes of the water inlet of plate type heat exchanger.
The pipeline connecting described cryophorus and described plate type heat exchanger is provided with backwater valve 7.Described hot water channel is provided with back-water valve (BWV)
Door 6.
The non-heat supply phase, also include cooling tower 12, the water inlet of the outlet connection cooling tower of described condenser, described condensing
The outlet of the water inlet connection cooling tower of device.
On the basis of extraction condensing type thermal power plant unit, in the winter time during heat supply, heat supply network recirculated water is introduced through strengthening reconstruction
After condenser in, utilize the vaporization latent heat heat supply network recirculated water of low pressure (LP) cylinder steam discharge, through condenser heating heat supply network circulation
Coolant-temperature gage, at about 65-70 DEG C, is drawn gas by the heating of High Back Pressure Steam Turbine Units and heating as the occasion requires is drawn gas as heat supply network recirculated water
Post bake, by about heat supply network circulating water heating to 110 DEG C to secondary heat supply network heat supply.Heat supply according to retrofitted unit region
Situation, the return water temperature of heat supply network recirculated water slightly difference, general heat supply network circulating water temperature is the lowest more good.But, after Transformation of Unit,
Unit heat capacity increases, and under the minimum electric load of retrofitted unit, low pressure (LP) cylinder steam discharge all heats heat supply network recirculated water, if currently supplying
Hot side is long-pending not to be increased, and after secondary heat supply network heat exchange, heat supply network recirculated water return water temperature is the highest, affects High Back Pressure Steam Turbine Units
Safety in operation.The present embodiment is by design heat supply network recirculated water return water temperature control system, reduces heat supply network recirculated water backwater temperature
Degree, it is achieved the feasibility of high back pressure heat supply transformation.
This utility model power plant high back pressure heat supply heat supply network return water temperature control system, on heat supply network recirculated water water return pipeline
Serial plate type heat exchanger, utilizes low temperature water source from the beginning to cool down heat supply network recirculated water backwater.Low after heat supply network circulating backwater heat exchange
Temperature water source from the beginning, temperature can be used for cleaning water after raising.Control low temperature tap water source flux by control valve 9, carry out
Line adjusts heat supply network recirculated water return water temperature.
The above is only preferred implementation of the present utility model, is not limited to this utility model, it is noted that
For those skilled in the art, on the premise of without departing from this utility model know-why, it is also possible to do
Going out some improvement and modification, these improve and modification also should be regarded as protection domain of the present utility model.
Claims (3)
1. Thermal Power Station's high back pressure heat supply heat supply network return water temperature control system, it is characterised in that including: intermediate pressure cylinder, low
Cylinder pressure, electromotor, the rotor of intermediate pressure cylinder, the rotor of low pressure (LP) cylinder, the rotor coaxial driving of electromotor, the venthole of medium pressure cylinder
By the air intake of gas pipeline Yu described low pressure (LP) cylinder, described gas pipeline is provided with control valve；Also include condenser, described
The low pressure (LP) cylinder outlet inlet communication by aqueduct Yu condenser, described connection condenser is provided with hydrophobic outlet；
The heat supply phase, also including heat supply network peak load calorifier, the venthole of medium pressure cylinder is added by hot gas path connection heat supply network spike
Hot device；
Heat supply network return water system is connected with the water inlet of condenser by heat supply network water return pipeline, and the outlet of condenser is led to by hot water
The import of road connection heat supply network peak load calorifier, the outlet heat supply network water system of heat supply network peak load calorifier；Return at described heat supply network
Being in series with plate type heat exchanger on waterpipe, the water inlet of described plate type heat exchanger connects backwater cooling system by cold water pipes,
Described backwater cooling system is less than the water source of described return water temperature by cold water pipes output temperature, and water source is through plate type heat exchanger
Outlet output；
Backwater cooling system described in connection is provided with current valve with the cold water pipes of the water inlet of plate type heat exchanger.
Thermal Power Station the most according to claim 1 high back pressure heat supply heat supply network return water temperature control system, it is characterised in that
Backwater cooling system is tap water supply system.
Thermal Power Station the most according to claim 1 high back pressure heat supply heat supply network return water temperature control system, it is characterised in that
Also include cooling tower, the water inlet of the outlet connection cooling tower of described condenser, the water inlet connection cooling of described condenser
The outlet of tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620383419.4U CN205878326U (en) | 2016-04-29 | 2016-04-29 | Thermal power plant high back pressure heat supply heat supply network return water temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620383419.4U CN205878326U (en) | 2016-04-29 | 2016-04-29 | Thermal power plant high back pressure heat supply heat supply network return water temperature control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205878326U true CN205878326U (en) | 2017-01-11 |
Family
ID=57687897
Family Applications (1)
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| CN201620383419.4U Expired - Fee Related CN205878326U (en) | 2016-04-29 | 2016-04-29 | Thermal power plant high back pressure heat supply heat supply network return water temperature control system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191232A (en) * | 2017-06-06 | 2017-09-22 | 大唐东北电力试验研究所有限公司 | Electric heating unit heating system |
| CN107420138A (en) * | 2017-08-02 | 2017-12-01 | 大唐东北电力试验研究所有限公司 | Turbo-generator Set novel energy-conserving system and method |
| CN107477649A (en) * | 2017-08-02 | 2017-12-15 | 大唐东北电力试验研究所有限公司 | Turbo-generator Set integrates afterheat utilizing system and method |
| CN107503809A (en) * | 2017-05-10 | 2017-12-22 | 程琛 | Condensing turbine low pressure (LP) cylinder cools down and small turbine exhaust steam heat recovery system |
| CN114777183A (en) * | 2022-04-07 | 2022-07-22 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Complementary auxiliary heat supply unit degree of depth peak regulation system of light and heat |
-
2016
- 2016-04-29 CN CN201620383419.4U patent/CN205878326U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503809A (en) * | 2017-05-10 | 2017-12-22 | 程琛 | Condensing turbine low pressure (LP) cylinder cools down and small turbine exhaust steam heat recovery system |
| CN107191232A (en) * | 2017-06-06 | 2017-09-22 | 大唐东北电力试验研究所有限公司 | Electric heating unit heating system |
| CN107191232B (en) * | 2017-06-06 | 2023-07-07 | 大唐东北电力试验研究所有限公司 | Heating system of electric heating unit |
| CN107420138A (en) * | 2017-08-02 | 2017-12-01 | 大唐东北电力试验研究所有限公司 | Turbo-generator Set novel energy-conserving system and method |
| CN107477649A (en) * | 2017-08-02 | 2017-12-15 | 大唐东北电力试验研究所有限公司 | Turbo-generator Set integrates afterheat utilizing system and method |
| CN114777183A (en) * | 2022-04-07 | 2022-07-22 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Complementary auxiliary heat supply unit degree of depth peak regulation system of light and heat |
| CN114777183B (en) * | 2022-04-07 | 2023-10-17 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Photo-thermal complementary auxiliary heating unit depth peak regulation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 130012 five, science research building, 3195, Wei Shan Road, Changchun high tech Zone, Jilin. Patentee after: Datang northeast electric power test and Research Institute Co., Ltd. Address before: No. 3195, Jilin high tech Zone Wei Shan Road, Changchun, Jilin Patentee before: DATANG NORTHEAST ELECTRIC POWER TEST RESEARCH INSTITUTE CO., LTD. |
|
| 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: 20170111 Termination date: 20200429 |