CN205717452U - A kind of coal-burning power plant heat supply network circulation - Google Patents
A kind of coal-burning power plant heat supply network circulation Download PDFInfo
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- CN205717452U CN205717452U CN201620637166.9U CN201620637166U CN205717452U CN 205717452 U CN205717452 U CN 205717452U CN 201620637166 U CN201620637166 U CN 201620637166U CN 205717452 U CN205717452 U CN 205717452U
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Abstract
The utility model discloses a kind of coal-burning power plant heat supply network circulation, including heat supply network condenser, steam discharge cooler, heat exchangers for district heating and circulation pump of heat-supply network, described heat supply network condenser and steam discharge cooler, heat exchangers for district heating is sequentially connected in series operation, described heat supply network condenser uses exhaust steam in steam turbine heating, described steam discharge cooler add hot vapour source from circulation pump of heat-supply network little steam turbine steam discharge, described heat exchangers for district heating all uses high back pressure extraction for heat supply, described circulation pump of heat-supply network has the water circulating pump that three is back pressure steam turbine drive to use as running, one is that motorized motions water circulating pump is as standby.This utility model, according to heating time and the difference to the requirement of heat supply network recirculated water supply water temperature, uses different mode of heatings, maximally utilises the exhaust steam that steam-turbine unit produces, the utilization ratio of the energy is greatly improved.
Description
Technical field
This utility model belongs to heat supply network heat supply process field, especially relates to a kind of coal-burning power plant heat supply network circulation.
Background technology
Energy-saving and emission-reduction are the important issue that " 12 " period Chinese society economy carries out sustainable development, as consumption
Energy rich and influential family, the emphasis of the energy-conservation always industrial energy saving of thermal power plant, along with constantly riseing of Fossil fuel price, energy-saving and emission-reduction are also
Being that power plant self saves operation cost, the important means increased economic efficiency, the cold end loss in thermal power plant is power plant's heating power
The ceiling capacity loss of system, substantial amounts of turbine condenser waste heat is emitted in air by different cooling devices.Power plant
In the winter time under operating condition, the loss of turbine discharge condensation heat can account for 50～60%(steam power plants of fuel gross calorific power also 30%
Above), the loss of exhaust steam in steam turbine condensation heat is waste heat discharge for thermal power plant, but for needing low grade heat energy
For building and heating, then constitute huge energy waste.
The waste heat utilizing recirculated water to take away is the big important means saving the energy, but, utilizing more than recirculated water in the past
During heat, often using heat pump to heat, consume substantial amounts of electric energy, investment is big, and income is little.
Utility model content
This utility model provides a kind of coal-burning power plant heat supply network circulation, can effectively solve current steam power plant energy profit
By the highest problem of rate.
This utility model be the technical scheme is that a kind of coal-burning power plant heat supply network circulation, it is characterised in that: bag
Include heat supply network water return pipeline, heat supply network condenser, circulation pump of heat-supply network, steam discharge cooler and heat exchangers for district heating, described heat supply network condenser
Be sequentially connected in series operation with steam discharge cooler, heat exchangers for district heating, described heat exchangers for district heating include No. 1 heat supply network condenser connecting and
No. 2 heat supply network condensers, every condenser all configures a solidifying gas drainage pump, and described circulation pump of heat-supply network is three back pressures in parallel
The water circulating pump of formula Steam Turbine Driven, the most in parallel one be motorized motions water circulating pump as standby, described heat supply network condenser
Use high back pressure exhaust steam in steam turbine heating, described steam discharge cooler add the hot vapour source recirculated water from back pressure steam turbine drive
The steam discharge of pump, described heat exchangers for district heating totally four, it is Horizontal U-shaped tube heater, all uses high back pressure extracted steam from turbine to supply
Heat.
During heat supply, when recirculated water return water temperature is less than 49 DEG C, utilize No. 1 machine exhaust steam heat cycles water so that it is water temperature
Improved to 49 DEG C by 41.5 DEG C.The heat supply network condenser that heat supply network recirculated water introduces No. 2 units the most again is heated to 62 DEG C,
The rear heat exchangers for district heating utilizing heat supply network station heats, when heat supply network recirculated water supply water temperature requires less than 62 DEG C, merely with vapour
Turbine discharge can meet heating demand by two-stage heat supply network condenser heat cycles water；In heat supply peak period, work as supply water temperature
Require higher than 62 DEG C time, except utilize turbine discharge pass through heat supply network condenser heat cycles water as basic heater means in addition to, profit
By conventional five sections of heat supply network station extraction for heat supply system, continue heat cycles water, thus reach the supply water temperature of outer net requirement.
Preferably, the water return pipeline between circulation pump of heat-supply network and steam discharge cooler is provided with No. 1 electric butterfly valve, described
Circulating water pipeline before No. 1 electric butterfly valve is connected with urban subscriber's waterpipe, is provided with No. 2 electronic butterflies on urban subscriber's waterpipe
Valve, described No. 1 electric butterfly valve, No. 2 electric butterfly valves, according to the difference of circulating water temperature, control the flow direction of recirculated water.
The beneficial effects of the utility model are: this heat supply network circulation supplies according to heating time and to heat supply network recirculated water
The difference that coolant-temperature gage requires, uses different mode of heatings, maximally utilises the exhaust steam that steam-turbine unit produces, significantly
Improve the utilization ratio of the energy.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1. heat supply network water return pipeline, 201. No. 1 heat supply network condensers, 202. No. 2 heat supply network condensers, 301. back pressure types
The water circulating pump of Steam Turbine Driven, 401. No. 1 electric butterfly valves of 302. motorized motions water circulating pump, 402. No. 2 electric butterfly valves,
5. steam discharge cooler, 6. heat exchangers for district heating, 7. municipal heating systems user pipe.
Detailed description of the invention
A kind of coal-burning power plant heat supply network circulation as shown in Figure 1, including heat supply network water return pipeline (1), heat supply network condenser,
Circulation pump of heat-supply network, steam discharge cooler (5) and heat exchangers for district heating (6), described heat supply network condenser (2) and steam discharge cooler (5), heat
Net heater (6) is sequentially connected in series operation, and described heat exchangers for district heating includes No. 1 heat supply network condenser (201) connecting and No. 2 heat supply networks
Condenser (202), every condenser (2) all configures a solidifying gas drainage pump, and described circulation pump of heat-supply network (3) is in parallel three
The water circulating pump (301) of back pressure steam turbine drive, the most in parallel one be motorized motions water circulating pump (302) as standby,
Described heat supply network condenser (2) use high back pressure exhaust steam in steam turbine heating, described steam discharge cooler (5) add hot vapour source from back pressure
The steam discharge of the water circulating pump (301) of formula Steam Turbine Driven, described heat exchangers for district heating (6) totally four, it is the heating of Horizontal U-shaped tubular type
Device, all uses high back pressure extracted steam from turbine heat supply.
No. 1 electric butterfly valve (401) it is provided with on water return pipeline between circulation pump of heat-supply network (3) and steam discharge cooler (5),
The circulating water pipeline that described No. 1 electric butterfly valve (401) is front is connected with urban subscriber's waterpipe (7), on urban subscriber's waterpipe
Being provided with No. 2 electric butterfly valves (402), described No. 1 electric butterfly valve (401), No. 2 electric butterfly valves (402) are according to circulating water temperature not
With, control the flow direction of recirculated water.
Its operation principle is: during heat supply, when heat supply network recirculated water supply water temperature requires less than 62 DEG C, merely with steamer
Machine steam discharge can meet heating demand by two-stage heat supply network condenser heat cycles water；In heat supply peak period, when supply water temperature is wanted
When asking higher than 62 DEG C, except utilize turbine discharge pass through heat supply network condenser heat cycles water as basic heater means in addition to, utilize
Conventional five sections of heat supply network station extraction for heat supply system, continues heat cycles water, thus reaches the supply water temperature of outer net requirement.
When recirculated water return water temperature is less than 49 DEG C, utilize No. 1 machine exhaust steam heating heat supply network recirculated water so that it is water temperature is by 41.5 DEG C
Improving to 49 DEG C, the heat supply network condenser that heat supply network recirculated water introduces No. 2 units the most again is heated to 62 DEG C, finally utilizes heat
The heat exchangers for district heating of website heats.
The beneficial effects of the utility model are: this heat supply network circulation supplies according to heating time and to heat supply network recirculated water
The difference that coolant-temperature gage requires, uses different mode of heatings, maximally utilises the exhaust steam that steam-turbine unit produces, significantly
Improve the utilization ratio of the energy.
Principle of the present utility model is simply described, without departing from this utility model described in above-described embodiment and description
On the premise of spirit and scope, this utility model also has various changes and modifications, and these changes and improvements both fall within requirement and protect
In the range of this utility model protected.This utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (2)
1. coal-burning power plant's heat supply network circulation, it is characterised in that: include heat supply network water return pipeline (1), heat supply network condenser, heat
Net water circulating pump, steam discharge cooler (5) and heat exchangers for district heating (6), described heat supply network condenser (2) and steam discharge cooler (5), heat supply network
Heater (6) is sequentially connected in series operation, and described heat exchangers for district heating includes that No. 1 heat supply network condenser (201) connected and No. 2 heat supply networks coagulate
Vapour device (202), every condenser (2) all configures a solidifying gas drainage pump, and described circulation pump of heat-supply network (3) is three back ofs the body in parallel
The water circulating pump (301) of pressure type Steam Turbine Driven, the most in parallel one be motorized motions water circulating pump (302) as standby, institute
State heat supply network condenser (2) use high back pressure exhaust steam in steam turbine heating, described steam discharge cooler (5) add hot vapour source from back pressure type
The steam discharge of the water circulating pump (301) of Steam Turbine Driven, described heat exchangers for district heating (6) totally four, it is the heating of Horizontal U-shaped tubular type
Device, all uses high back pressure extracted steam from turbine heat supply.
A kind of coal-burning power plant the most according to claim 1 heat supply network circulation, it is characterised in that: at circulation pump of heat-supply network
(3) water return pipeline and between steam discharge cooler (5) is provided with No. 1 electric butterfly valve (401), and described No. 1 electric butterfly valve (401) is front
Circulating water pipeline be connected with urban subscriber's waterpipe (7), urban subscriber's waterpipe is provided with No. 2 electric butterfly valves (402), institute
State No. 1 electric butterfly valve (401), No. 2 electric butterfly valves (402) according to the difference of circulating water temperature, control the flow direction of recirculated water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620637166.9U CN205717452U (en) | 2016-06-25 | 2016-06-25 | A kind of coal-burning power plant heat supply network circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620637166.9U CN205717452U (en) | 2016-06-25 | 2016-06-25 | A kind of coal-burning power plant heat supply network circulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205717452U true CN205717452U (en) | 2016-11-23 |
Family
ID=57317270
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620637166.9U Expired - Fee Related CN205717452U (en) | 2016-06-25 | 2016-06-25 | A kind of coal-burning power plant heat supply network circulation |
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| CN (1) | CN205717452U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119940A (en) * | 2017-11-08 | 2018-06-05 | 东北电力大学 | A kind of Target Control Method of heating power generating system |
-
2016
- 2016-06-25 CN CN201620637166.9U patent/CN205717452U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119940A (en) * | 2017-11-08 | 2018-06-05 | 东北电力大学 | A kind of Target Control Method of heating power generating system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20190625 |
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| CF01 | Termination of patent right due to non-payment of annual fee |