CN112797478A - Steam extraction and heat supply system capable of improving energy utilization efficiency - Google Patents
Steam extraction and heat supply system capable of improving energy utilization efficiency Download PDFInfo
- Publication number
- CN112797478A CN112797478A CN202110240854.7A CN202110240854A CN112797478A CN 112797478 A CN112797478 A CN 112797478A CN 202110240854 A CN202110240854 A CN 202110240854A CN 112797478 A CN112797478 A CN 112797478A
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- steam
- heat
- communicated
- heater
- outlet
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- 238000000605 extraction Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000010521 absorption reaction Methods 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 230000002209 hydrophobic effect Effects 0.000 claims description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/0002—Means for connecting central heating radiators to circulation pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/32—Collecting of condensation water; Drainage ; Removing solid particles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a steam extraction heating system capable of improving energy utilization efficiency.A steam extraction pipeline outlet is divided into two paths, wherein one path is communicated with an inlet of a steam turbine, the other path is communicated with a heat release side inlet of a peak heater, a steam exhaust port of the steam turbine is communicated with a heat release side inlet of a basic heater, a heat release outlet of the basic heater and a heat release side outlet of the peak heater are communicated with an inlet of a drain tank, and an outlet of the drain tank is communicated with a heat release side inlet of a drain cooler; the outlet of the water return pipeline is divided into three paths, wherein one path is communicated with the heat absorption side inlet of the peak heater, the second path is communicated with the heat absorption side inlet of the basic heater, the third path is communicated with the heat absorption side inlet of the drainage cooler, and the heat absorption side outlet of the peak heater, the heat absorption side outlet of the basic heater and the heat absorption side outlet of the drainage cooler are communicated with the water supply pipeline after being connected in parallel through pipelines.
Description
Technical Field
The invention belongs to the field of thermal power generation, and relates to a steam extraction and heat supply system capable of improving energy utilization efficiency.
Background
With the expansion of urban construction, the heat supply demand is continuously expanded, and the heat supply mode taking extraction steam of cogeneration as a main heat source is more and more important. With the expansion of urban construction, the heat supply demand is continuously expanded, and the central heat supply mode taking steam extraction of a cogeneration unit as a main heat source occupies a larger and larger area. The thermal power generating unit generally exhausts steam from the heat supply, the temperature and the pressure of the extracted steam are high, high-quality steam is directly used for supplying heat, the heat is not beneficial to effective utilization of energy, the utilization rate of the energy is reduced, resource waste and emission of carbon dioxide and pollutants are increased, and the cascade utilization of the energy is not beneficial.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned disadvantages of the prior art and providing an extraction heating system capable of improving energy utilization efficiency, which can realize a cascade utilization of energy.
In order to achieve the purpose, the steam extraction and heat supply system capable of improving the energy utilization efficiency comprises a steam extraction pipeline, a steam turbine, a peak heater, a basic heater, a drain tank, a drain cooler, a water return pipeline and a water supply pipeline;
the outlet of the steam extraction pipeline is divided into two paths, wherein one path is communicated with the inlet of the steam turbine, the other path is communicated with the heat release side inlet of the peak heater, the steam exhaust port of the steam turbine is communicated with the heat release side inlet of the basic heater, the heat release outlet of the basic heater and the heat release side outlet of the peak heater are communicated with the inlet of the drain tank, and the outlet of the drain tank is communicated with the heat release side inlet of the drain cooler;
the outlet of the water return pipeline is divided into three paths, wherein one path is communicated with the heat absorption side inlet of the peak heater, the second path is communicated with the heat absorption side inlet of the basic heater, the third path is communicated with the heat absorption side inlet of the drainage cooler, and the heat absorption side outlet of the peak heater, the heat absorption side outlet of the basic heater and the heat absorption side outlet of the drainage cooler are communicated with the water supply pipeline after being connected in parallel through pipelines.
The steam extraction pipeline is provided with a heat supply adjusting valve.
The outlet of the return water pipeline is divided into three paths after passing through a circulating water pump.
The outlet of the drain tank is communicated with the heat release side of the drain cooler through a drain pump.
The output shaft of the steam turbine is connected with a motor, and the output end of the motor is connected with a power supply bus.
And a power supply interface of the circulating water pump is connected with the output end of the motor.
Steam regulating valves are arranged at the inlet of the heat releasing side of the peak heater and the inlet of the steam turbine.
Circulating water regulating valves are arranged at the heat absorption side inlet of the peak heater, the heat absorption side inlet of the drainage cooler and the heat absorption side inlet of the basic heater.
The invention has the following beneficial effects:
when the steam extraction and heat supply system capable of improving the energy utilization efficiency is specifically operated, the steam extracted from the thermal power generating unit is used as a heat source for supplying heat, the temperature and the pressure of the steam extracted from the middle exhaust are high, namely high-quality steam, the steam firstly passes through the steam turbine for generating power, then enters the basic heater for heating the circulating water of the heating net, and the drain water output by the basic heater enters the drain water cooler for cooling again, so that the gradual utilization of energy is realized, the energy utilization rate is high, and the problems of resource waste and the increase of carbon dioxide and pollutant emission are avoided.
Drawings
FIG. 1 is a schematic view of the present invention;
wherein, 1 is a steam extraction pipeline, 2 is a heat supply regulating valve, 3 is a steam turbine, 4 is a motor, 5 is a power supply bus, 6 is a peak heater, 7 is a basic heater, 8 is a circulating water pump, 9 is a drain tank, 10 is a drain pump, 11 is a drain cooler, 12 is a drain pipeline, 13 is a water supply pipeline, and 14 is a water return pipeline.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the steam extraction and heat supply system capable of improving energy utilization efficiency according to the present invention includes a steam extraction pipeline 1, a steam turbine 3, a peak heater 6, a basic heater 7, a drain tank 9, a drain cooler 11, a water return pipeline 14, and a water supply pipeline 13; the outlet of the steam extraction pipeline 1 is divided into two paths, wherein one path is communicated with the inlet of the steam turbine 3, the other path is communicated with the heat release side inlet of the peak heater 6, the steam exhaust port of the steam turbine 3 is communicated with the heat release side inlet of the basic heater 7, the heat release outlet of the basic heater 7 and the heat release side outlet of the peak heater 6 are communicated with the inlet of the drain tank 9, and the outlet of the drain tank 9 is communicated with the heat release side inlet of the drain cooler 11; the outlet of the water return pipe 14 is divided into three paths, wherein one path is communicated with the heat absorption side inlet of the peak heater 6, the second path is communicated with the heat absorption side inlet of the basic heater 7, the third path is communicated with the heat absorption side inlet of the hydrophobic cooler 11, and the heat absorption side outlet of the peak heater 6, the heat absorption side outlet of the basic heater 7 and the heat absorption side outlet of the hydrophobic cooler 11 are communicated with the water supply pipe 13 after being combined into pipes.
Specifically, a heat supply regulating valve 2 is arranged on the steam extraction pipeline 1; the outlet of the water return pipeline 14 is divided into three paths after passing through a circulating water pump 8; the outlet of the drain tank 9 is communicated with the heat release side of a drain cooler 11 through a drain pump 10.
The output shaft of the steam turbine 3 is connected with a motor 4, the output end of the motor 4 is connected with a power supply bus 5, and the power supply interface of the circulating water pump 8 is connected with the output end of the motor 4.
Steam regulating valves are arranged at the inlet of the heat releasing side of the peak heater 6 and the inlet of the steam turbine 3, so that the amount of steam entering the peak heater 6 and the steam turbine 3 is regulated.
Circulating water regulating valves are arranged at the heat absorption side inlet of the peak heater 6, the heat absorption side inlet of the hydrophobic cooler 11 and the heat absorption side inlet of the basic heater 7 so as to regulate the flow of circulating water entering the peak heater 6, the hydrophobic cooler 11 and the basic heater 7.
The specific working process of the invention is as follows:
the heat supply steam output by the steam extraction pipeline 1 is divided into two paths after passing through the heat supply regulating valve 2, wherein one path enters the steam turbine 3 to drag the motor 4 to generate electricity, the electricity output by the motor 4 is sent into the power supply bus 5 and the circulating water pump 8, the exhaust steam of the steam turbine 3 enters the heat release side of the basic heater 7 to release heat, the other path enters the heat release side of the peak heater 6 to release heat, the drainage output by the heat release side of the basic heater 7 and the drainage output by the heat release side of the peak heater 6 converge and then enter the drainage tank 9, the drainage in the drainage tank 9 is cooled again in the heat release side of the drainage cooler 11 in the drainage pump 10 and then is sent back to the water treatment workshop through the drainage pipeline 12.
The circulating water of the heat supply network output by the water return pipeline 14 is subjected to pressure rise by the circulating water pump 8 and then divided into three paths, the first path enters the heat absorption side of the peak heater 6 to be heated, the second path enters the heat absorption side of the basic heater 7 to be heated, the third path enters the heat absorption side of the hydrophobic cooler 11 to be heated, and the water output by the heat absorption side of the peak heater 6, the water output by the heat absorption side of the basic heater 7 and the water output by the heat absorption side of the hydrophobic cooler 11 are converged and then are sent to a heat user through the water supply pipeline 13.
The above is merely preferred in the present invention. However, the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention will be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A steam extraction and heat supply system capable of improving energy utilization efficiency is characterized by comprising a steam extraction pipeline (1), a steam turbine (3), a peak heater (6), a basic heater (7), a drain tank (9), a drain cooler (11), a water return pipeline (14) and a water supply pipeline (13);
the outlet of the steam extraction pipeline (1) is divided into two paths, wherein one path is communicated with the inlet of a steam turbine (3), the other path is communicated with the heat release side inlet of a peak heater (6), the steam exhaust port of the steam turbine (3) is communicated with the heat release side inlet of a basic heater (7), the heat release outlet of the basic heater (7) and the heat release side outlet of the peak heater (6) are communicated with the inlet of a drain tank (9), and the outlet of the drain tank (9) is communicated with the heat release side inlet of a drain cooler (11);
the outlet of the water return pipeline (14) is divided into three paths, wherein one path is communicated with the heat absorption side inlet of the peak heater (6), the second path is communicated with the heat absorption side inlet of the basic heater (7), the third path is communicated with the heat absorption side inlet of the hydrophobic cooler (11), and the heat absorption side outlet of the peak heater (6), the heat absorption side outlet of the basic heater (7) and the heat absorption side outlet of the hydrophobic cooler (11) are communicated with the water supply pipeline (13) after being connected in parallel through pipelines.
2. The steam-extraction heating system capable of improving the energy utilization efficiency according to claim 1, wherein the steam-extraction pipeline (1) is provided with a heating regulating valve (2).
3. The steam-extracting and heat-supplying system capable of improving energy utilization efficiency of claim 1, wherein the outlet of the water return pipe (14) is divided into three paths after passing through the circulating water pump (8).
4. The steam-extraction heating system capable of improving energy utilization efficiency according to claim 1, wherein the outlet of the drain tank (9) is communicated with the heat-releasing side of the drain cooler (11) through a drain pump (10).
5. The steam-extraction heating system capable of improving the energy utilization efficiency according to claim 1, wherein an output shaft of the steam turbine (3) is connected with a motor (4), and an output end of the motor (4) is connected with a power supply bus (5).
6. The steam-extraction heating system capable of improving the energy utilization efficiency as claimed in claim 5, wherein the power supply interface of the circulating water pump (8) is connected with the output end of the motor (4).
7. The steam-extraction heating system capable of improving energy utilization efficiency according to claim 1, wherein steam regulating valves are provided at the inlet of the heat-releasing side of the peak heater (6) and the inlet of the steam turbine (3).
8. The steam-extraction heating system capable of improving the energy utilization efficiency according to claim 1, wherein circulating water regulating valves are arranged at the heat-absorption-side inlet of the peak heater (6), the heat-absorption-side inlet of the drain cooler (11) and the heat-absorption-side inlet of the basic heater (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110240854.7A CN112797478A (en) | 2021-03-04 | 2021-03-04 | Steam extraction and heat supply system capable of improving energy utilization efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110240854.7A CN112797478A (en) | 2021-03-04 | 2021-03-04 | Steam extraction and heat supply system capable of improving energy utilization efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112797478A true CN112797478A (en) | 2021-05-14 |
Family
ID=75815481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110240854.7A Pending CN112797478A (en) | 2021-03-04 | 2021-03-04 | Steam extraction and heat supply system capable of improving energy utilization efficiency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112797478A (en) |
-
2021
- 2021-03-04 CN CN202110240854.7A patent/CN112797478A/en active Pending
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