CN202101223U - Water supplementing and heating system adopting multi-stage heat pumps for boilers of power plants and thermal power plants - Google Patents
Water supplementing and heating system adopting multi-stage heat pumps for boilers of power plants and thermal power plants Download PDFInfo
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- CN202101223U CN202101223U CN201120031730XU CN201120031730U CN202101223U CN 202101223 U CN202101223 U CN 202101223U CN 201120031730X U CN201120031730X U CN 201120031730XU CN 201120031730 U CN201120031730 U CN 201120031730U CN 202101223 U CN202101223 U CN 202101223U
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Abstract
Provided is a water supplementing and heating system adopting multi-stage heat pumps for boilers of power plants and thermal power plants. Two or more than two heat pumps are connected in series to form a two-stage heat pump group or a heat pump group above two stages to heat supplemented water required by the boilers, thereby meeting the requirements of water supplementing and heating of the boilers and reducing energy consumption.
Description
Technical field
The utility model relates to a kind of power plant, thermal power plant boiler moisturizing heating system that adopts multi-stage heat pump; It can utilize the used heat of power plant, steam turbine in thermal power plant condenser that the moisturizing of boiler is heated, thereby reaches the purpose that not only satisfies the boiler replenishing water demand of heating but also can reduce energy resource consumption.
Background technology
At present, known boiler replenishing water heating system has low pressure to extract vapor heating type, moisturizing is mended into two kinds on type from condenser, and its mesolow extracts vapor heating type need extract steam from turbine low pressure cylinder, thereby makes the minimizing of exerting oneself of steam turbine; Though and moisturizing is mended the waste heat that type can utilize steam some condensers (exhaust steam) from condenser; But because the exhaust steam pressure and temperature in the condenser is all lower; So the heat that moisturizing is therefrom obtained is limited, and owing to contain a large amount of gas in the cold water that replenishes, thereby the vacuum that in the process of heating, can separate out condenser damages; Contain oxygen in the gas of separating out in addition, and oxygen can cause corrosion to condenser and associated conduit etc.
Summary of the invention
Extract vapor heating type in order to overcome low pressure, moisturizing is mended the deficiency into these two kinds of boiler replenishing water modes of type from condenser; The utility model provides a kind of power plant, thermal power plant boiler moisturizing heating system that adopts multi-stage heat pump; Need extract the limited and vacuum of separating out condenser that spray into the gas that contains the moisturizing of condenser of heat that minimizings of exerting oneself (low pressure extraction vapor heating type) that steam makes steam turbine or moisturizing therefrom obtain from turbine low pressure cylinder thereby this kind power plant, thermal power plant boiler moisturizing heating system are avoided fully and damage, condenser and associated conduit etc. is caused the weak point of corrosion (moisturizing is mended into type from condenser), and can install, safeguard not influencing under the situation that the former water charging system of boiler normally moves.
The utility model solves the technical scheme that its technical problem adopted: heat pump mainly is from the cooling water of power plant steam turbine condenser, to extract; The way that adopts the plural serial stage heating to boiler needed moisturizing heat; The required heat pump of moisturizing employing more than two or two of boiler is connected into secondary with heat pump or the heat pump group more than the secondary heats; Heat pump will come out heat extraction from the cooling water of condenser; The moisturizing condenser through heat pump step by step that needs the boiler of heating; Be up to about 90～95 ℃ (or higher) thereby heat step by step, because the heat of heating boiler moisturizing is from the cooling water of condenser, to extract, so thereby avoided extracting the problem of exerting oneself and reducing that steam makes steam turbine from turbine low pressure cylinder; And because boiler replenishing water is through heating step by step; Can the highlyest be heated to about 90～95 ℃ (or higher), and moisturizing do not spray into condenser, thus avoided the exhaust steam residual heat utilization rate low with moisturizing in the vacuum of separating out condenser of the gas that contains damage, condenser and associated conduit etc. caused the deficiency of corrosion (moisturizing is mended into type from condenser).The condensate that exhaust steam this moment is condensed in condenser can directly be pumped into boiler or pumped into heat pumps at different levels with demineralized water by supply-water pump by the hot water of boiler replenishing water pump in hot well or oxygen-eliminating device; Get into hot well or oxygen-eliminating device after the heating or pumped into heat pumps at different levels with demineralized water by supply-water pump, the heating back is directly pumped into boiler.Because multi-stage heat pump can be installed with former boiler replenishing water system is parallel, therefore when the boiler replenishing water heating system of installation and maintenance the utility model, can the operation of former boiler replenishing water system not had any impact.
The beneficial effect of the utility model is: utilize the waste heat from the cooling water of turbine condenser; Thereby avoided fully from turbine low pressure cylinder extract steam make problem that exerting oneself of steam turbine reduce and exhaust steam residual heat utilization rate low with moisturizing the vacuum of separating out condenser of the gas that contains damage, condenser and associated conduit etc. caused the deficiency of corrosion (moisturizing is mended into type from condenser); Since the boiler replenishing water heating system of the utility model can with parallel installation of former boiler replenishing water system; So can the operation of former boiler replenishing water system not had any impact, can under the situation of the operation that does not influence former boiler replenishing water system, install, safeguard simultaneously the boiler replenishing water heating system of the utility model.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the system diagram (is example with three grades of heat pump) of the utility model
Fig. 2 is the system diagram (is example with three grades of heat pump) of the utility model
Among the figure: the 1-supply-water pump; 2-one-level heat pump; 3-secondary heat pump; Three grades of heat pumps of 4-; 5-hot well or oxygen-eliminating device; 6-boiler replenishing water pump; The 7-boiler; The 8-steam turbine; The 9-condenser; The 10-cooling water pump; The 11-cooling tower
The specific embodiment
Fig. 1 is the systematic schematic diagram that power plant, steam power plant use the utility model; Many heat pumps (one-level heat pump (2), secondary heat pump (3), three grades of heat pumps (4)), hot well or the oxygen-eliminating device (5) that whole system connects by supply-water pump (1), with series system, boiler replenishing water pump (6), boiler (7), steam turbine (8), condenser (9), cooling water pump (10), cooling tower (11) etc. are formed; Supply-water pump (1) will pass through the demineralized water of handling and pump into; Be heated the back through the condenser through one-level heat pump (2), secondary heat pump (3), three grades of heat pumps (4) step by step and get into hot well or oxygen-eliminating device (5); Pumped into boiler (7) by boiler replenishing water pump (6) pressurization then; Water process heating evaporation in boiler (7) becomes the steam of HTHP; Get into steam turbine (8); Pushing turbine (8) rotation drives generator and produces electric power; Then steam becomes exhaust steam and discharges (wherein the part low-pressure steam is drawn out of and is used for other purposes) from steam turbine (8) tail end low pressure (LP) cylinder after steam turbine (8) acting, and the exhaust steam of discharging from steam turbine (8) gets into condenser (9) water-cooled that is cooled and but becomes water again, subsequently with hot well or oxygen-eliminating device (5) in hot water mix by boiler replenishing water pump (6) and pump into boiler (7); Be heated in the time of the water quench exhaust steam that gets into condenser (9), the water pump that then is cooled (10) gets into condenser (9) absorption heat after pumping into the evaporimeter heat release in cooling tower (11) and one-level heat pump (2), secondary heat pump (3), the three grades of heat pumps (4) again.
Fig. 2 is the systematic schematic diagram that power plant, steam power plant use the utility model; Many heat pumps (one-level heat pump (2), secondary heat pump (3), three grades of heat pumps (4)), hot well or the oxygen-eliminating device (5) that whole system connects by supply-water pump (1), with series system, boiler replenishing water pump (6), boiler (7), steam turbine (8), condenser (9), cooling water pump (10), cooling tower (11) etc. are formed; Supply-water pump (1) will pass through the demineralized water of handling and pump into; Be heated the back through the condenser through one-level heat pump (2), secondary heat pump (3), three grades of heat pumps (4) step by step and get into hot well or oxygen-eliminating device (5); Pumped into boiler (7) by boiler replenishing water pump (6) pressurization then; Water process heating evaporation in boiler (7) becomes the steam of HTHP; Get into steam turbine (8); Pushing turbine (8) rotation drives generator and produces electric power; Then steam becomes exhaust steam from steam turbine (8) tail end low pressure (LP) cylinder discharge (wherein the part low-pressure steam is drawn out of and is used for other purposes) after steam turbine (8) acting; The exhaust steam of discharging from steam turbine (8) gets into condenser (9) water-cooled that is cooled and but becomes water again, mixes the condenser that the back is pumped into one-level heat pump (2), secondary heat pump (3), three grades of heat pumps (4) step by step subsequently with the preceding demineralized water of supply-water pump (1), through heating back entering hot well or oxygen-eliminating device (5); Be heated in the time of the water quench exhaust steam that gets into condenser (9), the water pump that then is cooled (10) gets into condenser (9) absorption heat after pumping into the evaporimeter heat release in cooling tower (11) and one-level heat pump (2), secondary heat pump (3), the three grades of heat pumps (4) again.
Claims (5)
1. power plant, thermal power plant boiler moisturizing heating system that adopts multi-stage heat pump; Its heat pump mainly is from the cooling water of power plant steam turbine condenser, to extract; The way that adopts the plural serial stage heating to boiler needed moisturizing heat, it is characterized in that: heat pump to boiler required moisturizing adopt heat pump more than two or two to be connected into secondary or the heat pump group more than the secondary heats.
2. the power plant of multi-stage heat pump according to claim 1, thermal power plant boiler moisturizing heating system is characterized in that: the heat of heating boiler moisturizing is from the cooling water of power plant steam turbine condenser, to extract through heat pump.
3. the power plant of multi-stage heat pump according to claim 1, thermal power plant boiler moisturizing heating system, it is characterized in that: the condensate that exhaust steam is condensed in condenser can directly be pumped into boiler by the hot water of boiler replenishing water pump in hot well or oxygen-eliminating device.
4. the power plant of multi-stage heat pump according to claim 1, thermal power plant boiler moisturizing heating system, it is characterized in that: the condensate that exhaust steam is condensed in condenser can be pumped into heat pumps at different levels by supply-water pump with demineralized water, and the heating back gets into hot well or oxygen-eliminating device.
5. the power plant of multi-stage heat pump according to claim 1, thermal power plant boiler moisturizing heating system, it is characterized in that: the condensate that exhaust steam is condensed in condenser can be pumped into heat pumps at different levels by supply-water pump with demineralized water, and the heating back is directly pumped into boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120031730XU CN202101223U (en) | 2011-01-27 | 2011-01-27 | Water supplementing and heating system adopting multi-stage heat pumps for boilers of power plants and thermal power plants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120031730XU CN202101223U (en) | 2011-01-27 | 2011-01-27 | Water supplementing and heating system adopting multi-stage heat pumps for boilers of power plants and thermal power plants |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202101223U true CN202101223U (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120031730XU Expired - Fee Related CN202101223U (en) | 2011-01-27 | 2011-01-27 | Water supplementing and heating system adopting multi-stage heat pumps for boilers of power plants and thermal power plants |
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| CN (1) | CN202101223U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889573A (en) * | 2012-09-24 | 2013-01-23 | 天津大学 | Process system for preparing deoxygenated water for boiler by utilizing high temperature heat pump system |
| CN112325510A (en) * | 2020-11-10 | 2021-02-05 | 上海交通大学 | Circulating cooling water temperature-distribution device suitable for large-scale power plant |
-
2011
- 2011-01-27 CN CN201120031730XU patent/CN202101223U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889573A (en) * | 2012-09-24 | 2013-01-23 | 天津大学 | Process system for preparing deoxygenated water for boiler by utilizing high temperature heat pump system |
| CN112325510A (en) * | 2020-11-10 | 2021-02-05 | 上海交通大学 | Circulating cooling water temperature-distribution device suitable for large-scale power plant |
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Legal Events
| 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: 20120104 Termination date: 20130127 |
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| CF01 | Termination of patent right due to non-payment of annual fee |