CN213514033U - Power station heating system for recovering waste heat of steam driven by absorption heat pump - Google Patents
Power station heating system for recovering waste heat of steam driven by absorption heat pump Download PDFInfo
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- CN213514033U CN213514033U CN202022622289.4U CN202022622289U CN213514033U CN 213514033 U CN213514033 U CN 213514033U CN 202022622289 U CN202022622289 U CN 202022622289U CN 213514033 U CN213514033 U CN 213514033U
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 53
- 238000010438 heat treatment Methods 0.000 title claims abstract description 21
- 239000002918 waste heat Substances 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000011084 recovery Methods 0.000 claims abstract description 4
- 238000000605 extraction Methods 0.000 claims description 22
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 230000001276 controlling effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model provides a retrieve power station heating system of absorption heat pump drive steam waste heat, include: a steam turbine unit; a water side inlet of the driving steam cooler is connected with a first water return pipeline branch of the heat supply network circulating water, and a heat release side inlet of the driving steam cooler is connected with the steam turbine set; the driving steam inlet of the absorption heat pump is connected with the heat release side outlet of the driving steam cooler, the driving steam outlet of the absorption heat pump is connected with the recovery device, and the heat absorption side inlet of the absorption heat pump is connected with the second water return pipeline branch of the heat supply network circulating water; the water side outlet of the driving steam cooler and the heat absorption side outlet of the absorption heat pump are connected with a water inlet pipeline of the heat supply network peak heater, and a water outlet pipeline of the heat supply network peak heater is connected with a downstream device. Through setting up drive steam cooler, realized the high-efficient utilization of energy, reach the purpose that improves energy utilization.
Description
Technical Field
The utility model relates to a hot spot coproduction field, concretely relates to retrieve power station heating system of absorption heat pump drive steam waste heat.
Background
Cogeneration is a recognized energy-saving means, and cogeneration units are widely used in China. The conventional thermoelectric unit mainly adopts a medium-low pressure communicating pipe steam extraction heat supply mode, and the absorption heat pump heat supply mode can further improve the energy utilization rate because of recovering exhaust steam of the steam turbine unit, and is widely applied to large-scale cogeneration units.
The large-scale absorption heat pump heat supply unit generally uses medium pressure cylinder exhaust steam as a high-temperature driving steam gas source, the medium pressure cylinder exhaust steam pressure of the existing large-scale cogeneration unit is 0.4-0.5 MPa, the steam temperature is 280-300 ℃, the medium pressure cylinder exhaust steam pressure is matched with the driving steam pressure required by the absorption heat pump, and the cascade utilization of the extraction steam pressure energy is realized, but the absorption heat pump device has higher requirements on the temperature of the high-temperature driving steam, on one hand, the high temperature of a working medium of the absorption heat pump easily causes the rapid increase of the corrosivity of equipment, on the other hand, the heat transfer coefficients of superheated steam and saturated steam are greatly different, and the superheated steam influences the heat economy of the heat pump. The saturation temperature of the driving steam is generally 140-150 ℃, so a temperature reduction device is usually arranged on a driving steam pipeline to reduce the temperature of the driving steam to 280-300 ℃ to 140-150 ℃ of the saturation temperature and then send the driving steam to an absorption heat pump. In the process of temperature reduction, the recycling of the heat of the superheat degree of the driving steam cannot be realized, the energy waste of the high-quality steam is caused, and the recycling of the waste heat of the driving steam has important significance for deep energy conservation and consumption reduction of cogeneration.
SUMMERY OF THE UTILITY MODEL
The utility model provides a retrieve power station heating system of absorption heat pump drive steam waste heat to reach the purpose that improves energy utilization.
The utility model provides a technical scheme that its technical problem adopted is: a power station heating system for recovering waste heat of steam driven by an absorption heat pump comprises: a steam turbine unit; a water side inlet of the driving steam cooler is connected with a first water return pipeline branch of the heat supply network circulating water, and a heat release side inlet of the driving steam cooler is connected with the steam turbine set; the driving steam inlet of the absorption heat pump is connected with the heat release side outlet of the driving steam cooler, the driving steam outlet of the absorption heat pump is connected with the recovery device, and the heat absorption side inlet of the absorption heat pump is connected with the second water return pipeline branch of the heat supply network circulating water; the water side outlet of the driving steam cooler and the heat absorption side outlet of the absorption heat pump are connected with a water inlet pipeline of the heat supply network peak heater, and a water outlet pipeline of the heat supply network peak heater is connected with a downstream device.
Furthermore, the steam turbine set is connected with a heat release side inlet of the driving steam cooler through a heat pump heat supply steam extraction pipeline.
Furthermore, a flow regulating valve is arranged on the heat pump heat supply steam extraction pipeline.
Furthermore, the steam turbine set is connected with a heat release side inlet of the heat supply network peak heater through a steam extraction pipeline of the heat supply network peak heater, and a heat release side outlet of the heat supply network peak heater is connected with a downstream component.
Furthermore, a flow regulating valve is arranged on the steam extraction pipeline of the peak heater of the heat supply network.
Further, a heat supply network circulating water flow regulating valve is arranged on the first return water pipeline branch.
Furthermore, a heat supply network circulating water flow regulating valve is arranged on the second water return pipeline branch.
Furthermore, the steam turbine set comprises an intermediate pressure cylinder, and the gas outlet side of the steam turbine set is connected with an inlet of a heat pump heat supply steam extraction pipeline.
Furthermore, the steam turbine set also comprises a low pressure cylinder, and an inlet is connected with the air outlet side of the medium pressure cylinder.
Furthermore, the steam turbine unit also comprises a generator, and the rotor is fixedly connected with the rotating shaft of the low-pressure cylinder.
The beneficial effects of the utility model are that, this embodiment not only can make the drive steam parameter reduce reasonable interval through setting up the drive steam cooler, can also retrieve the waste heat of drive steam, has realized the high-efficient utilization of energy, reaches the purpose that improves energy utilization.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Reference numbers in the figures: 1. an intermediate pressure cylinder; 2. a low pressure cylinder; 3. a generator; 4. driving the steam cooler; 5. an absorption heat pump; 6. a heat network spike heater; 7. a heat pump heat supply steam extraction pipeline; 8. a heat network peak heater steam extraction pipeline; 9. a first return water pipeline branch; 10. a flow regulating valve; 11. a water inlet pipe; 12. and a second water return pipeline branch.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, an embodiment of the present invention provides a power station heating system for recovering waste heat of absorption heat pump driving steam, including a steam turbine set, a driving steam cooler 4, an absorption heat pump 5 and a heat supply network peak heater 6. The water side inlet of the driving steam cooler 4 is connected with a first water return pipeline branch 9 of the heat supply network circulating water, and the heat release side inlet of the driving steam cooler 4 is connected with the steam turbine set. The driving steam inlet of the absorption heat pump 5 is connected with the heat release side outlet of the driving steam cooler 4, the driving steam outlet of the absorption heat pump 5 is connected with the recovery device, and the heat absorption side inlet of the absorption heat pump 5 is connected with the second water return pipeline branch 12 of the heat supply network circulating water. The water side outlet of the driving steam cooler 4 and the heat absorption side outlet of the absorption heat pump 5 are both connected with a water inlet pipeline 11 of the heat supply network peak heater 6, and a water outlet pipeline of the heat supply network peak heater 6 is connected with a downstream device.
This embodiment not only can make the drive steam parameter reduce reasonable interval through setting up drive steam cooler 4, can also retrieve the waste heat of drive steam, has realized the high-efficient utilization of energy, reaches the purpose that improves energy utilization.
As shown in fig. 1, the steam turbine unit in the present embodiment includes an intermediate pressure cylinder 1, a low pressure cylinder 2, and a generator 3. The air outlet side of the intermediate pressure cylinder 1 is connected with the heat release side inlet of the driving steam cooler 4 through a heat pump heat supply steam extraction pipeline 7. The inlet of the low pressure cylinder 2 is connected with the air outlet side of the intermediate pressure cylinder 1, and the intermediate pressure cylinder 1 and the heat pump heat supply steam extraction pipeline 7 form a parallel structure. The rotor of the generator 3 is fixedly connected with the rotating shaft of the low-pressure cylinder 2, and the generator can rotate through the low-pressure cylinder 2 to generate electricity. The above structure is the same as the structure of the steam turbine set in the prior art, and therefore the specific structure and the connection relation thereof are not described again in this embodiment.
Preferably, the heat pump heating steam extraction pipe 7 is provided with a flow regulating valve, and the flow regulating valve can be used for controlling the fluid flow in the heat pump heating steam extraction pipe 7.
In this embodiment, the driving steam cooler 4 is disposed on the heat pump heat supply steam extraction pipeline 7, and the driving steam of the absorption heat pump 5 firstly passes through the driving steam cooler 4 to reduce the temperature, and then enters the absorption heat pump 5 to heat the heat supply network circulating water provided by the first water return pipeline branch 9.
Further, the intermediate pressure cylinder 1 is connected with a heat release side inlet of the heat supply network peak heater 6 through a heat supply network peak heater steam extraction pipeline 8, and a heat release side outlet of the heat supply network peak heater 6 is connected with a downstream component. And a flow regulating valve is arranged on the steam extraction pipeline 8 of the peak heater of the heat supply network. Steam in the intermediate pressure cylinder 1 can be connected with the heat release side inlet of the heat supply network peak heater 6 through the heat supply network peak heater steam extraction pipeline 8, and the purpose of heat exchange between the steam in the intermediate pressure cylinder 1 and the heat supply network peak heater 6 can be achieved. Meanwhile, the steam flow can be controlled by arranging the flow regulating valve, so that the effect of controlling the heat exchange effect is achieved.
As shown in fig. 1, the first return water pipe branch 9 is provided with a heat supply network circulating water flow regulating valve 10. The heat supply network circulating water flow regulating valve 10 is arranged for controlling the water supply flow of the first return water pipeline branch 9, so that the purpose of controlling and driving the heat exchange effect of the steam cooler 4 is achieved.
Similarly, a heat supply network circulating water flow regulating valve 10 is arranged on the second water return pipeline branch 12. The function of the heat supply network circulating water flow regulating valve 10 arranged on the second water return pipeline branch 12 is consistent with that of the heat supply network circulating water flow regulating valve 10 arranged on the first water return pipeline branch 9.
In the embodiment, the branch 9 of the first water return pipeline enters the driving steam cooler 4 to recover the superheat heat of the driving steam; the second water return pipeline branch 12 enters the absorption heat pump 5 to be heated, and the heat supply network circulating water outlet water for driving the steam cooler 4 is mixed with the outlet water of the absorption heat pump 5 and then jointly enters the heat supply network peak heater 6 to be further heated.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: this embodiment not only can make the drive steam parameter reduce reasonable interval through setting up drive steam cooler 4, can also retrieve the waste heat of drive steam, has realized the high-efficient utilization of energy, reaches the purpose that improves energy utilization.
The above description is only for the specific embodiments of the present invention, and the scope of the present invention can not be limited by the embodiments, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should still belong to the scope covered by the present patent. In addition, the utility model provides an between technical feature and the technical feature, between technical feature and the technical scheme, all can the independent assortment use between technical scheme and the technical scheme.
Claims (10)
1. The utility model provides a retrieve power station heating system of absorption heat pump drive steam waste heat which characterized in that includes:
a steam turbine unit;
a water side inlet of the driving steam cooler (4) is connected with a first water return pipeline branch (9) of the heat supply network circulating water, and a heat release side inlet of the driving steam cooler (4) is connected with the steam turbine unit;
the driving steam inlet of the absorption heat pump (5) is connected with the heat release side outlet of the driving steam cooler (4), the driving steam outlet of the absorption heat pump (5) is connected with the recovery device, and the heat absorption side inlet of the absorption heat pump (5) is connected with a second water return pipeline branch (12) of the circulating water of the heat supply network;
the water side outlet of the heat supply network peak heater (6), the water side outlet of the driving steam cooler (4) and the heat absorption side outlet of the absorption heat pump (5) are both connected with a water inlet pipeline (11) of the heat supply network peak heater (6), and a water outlet pipeline of the heat supply network peak heater (6) is connected with a downstream device.
2. A plant heating system to recover the residual heat of steam driven by absorption heat pumps according to claim 1, characterized in that the steam turbine set is connected to the inlet of the heat release side of the driving steam cooler (4) through a heat pump heating extraction pipe (7).
3. A power station heating system for recovering the residual heat of steam driven by an absorption heat pump according to claim 2, wherein a flow regulating valve is arranged on the heat pump heating steam extraction pipeline (7).
4. A power plant heating system to recover waste heat of steam driven by absorption heat pumps according to claim 1, wherein the steam turbine unit is connected to the inlet of the heat release side of the peak heat grid heater (6) via a peak heat grid heater extraction steam line (8), and the outlet of the heat release side of the peak heat grid heater (6) is connected to a downstream component.
5. A power plant heating system for recovering the residual heat of steam driven by an absorption heat pump according to claim 4, wherein a flow control valve is arranged on the extraction pipeline (8) of the peak heater of the heat supply network.
6. The plant heating system for recovering the residual heat of steam driven by an absorption heat pump according to claim 1, wherein the first water return pipeline branch (9) is provided with a heat supply network circulating water flow regulating valve (10).
7. The plant heating system for recovering the residual heat of steam driven by an absorption heat pump according to claim 1, wherein the second water return pipeline branch (12) is provided with a heat supply network circulating water flow regulating valve (10).
8. A power station heating system for recovering the residual heat of steam driven by an absorption heat pump according to claim 2, wherein the steam turbine unit comprises an intermediate pressure cylinder (1), and the outlet side of the steam turbine unit is connected with the inlet of the heat pump heat supply steam extraction pipeline (7).
9. The power station heating system for recovering the residual heat of steam driven by the absorption heat pump according to claim 8, wherein the steam turbine unit further comprises a low pressure cylinder (2), and an inlet of the low pressure cylinder is connected with an outlet side of the medium pressure cylinder (1).
10. The plant heating system for recovering the residual heat of steam driven by an absorption heat pump according to claim 9, wherein the steam turbine unit further comprises a generator (3), and a rotor of the generator is fixedly connected with a rotating shaft of the low pressure cylinder (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022622289.4U CN213514033U (en) | 2020-11-13 | 2020-11-13 | Power station heating system for recovering waste heat of steam driven by absorption heat pump |
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| CN202022622289.4U CN213514033U (en) | 2020-11-13 | 2020-11-13 | Power station heating system for recovering waste heat of steam driven by absorption heat pump |
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| CN213514033U true CN213514033U (en) | 2021-06-22 |
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| CN202022622289.4U Active CN213514033U (en) | 2020-11-13 | 2020-11-13 | Power station heating system for recovering waste heat of steam driven by absorption heat pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856739A (en) * | 2022-05-24 | 2022-08-05 | 华能国际电力股份有限公司 | Hydrothermal electricity cogeneration system based on low-temperature multi-effect evaporation technology |
| CN115013852A (en) * | 2022-05-31 | 2022-09-06 | 华能伊敏煤电有限责任公司 | Multi-unit heat supply drainage waste heat deep recycling device and method |
-
2020
- 2020-11-13 CN CN202022622289.4U patent/CN213514033U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856739A (en) * | 2022-05-24 | 2022-08-05 | 华能国际电力股份有限公司 | Hydrothermal electricity cogeneration system based on low-temperature multi-effect evaporation technology |
| CN114856739B (en) * | 2022-05-24 | 2023-08-08 | 华能国际电力股份有限公司 | Water-heat cogeneration system based on low-temperature multi-effect evaporation technology |
| CN115013852A (en) * | 2022-05-31 | 2022-09-06 | 华能伊敏煤电有限责任公司 | Multi-unit heat supply drainage waste heat deep recycling device and method |
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