CN219974587U - Combined heat and power generation unit - Google Patents
Combined heat and power generation unit Download PDFInfo
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- CN219974587U CN219974587U CN202320874853.2U CN202320874853U CN219974587U CN 219974587 U CN219974587 U CN 219974587U CN 202320874853 U CN202320874853 U CN 202320874853U CN 219974587 U CN219974587 U CN 219974587U
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- cogeneration unit
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- 238000010248 power generation Methods 0.000 title description 2
- 239000007788 liquid Substances 0.000 claims abstract description 54
- 238000004146 energy storage Methods 0.000 claims abstract description 45
- 230000005611 electricity Effects 0.000 claims abstract description 15
- 238000005338 heat storage Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000003828 downregulation Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of cogeneration, in particular to a cogeneration unit. The utility model provides a thermal power unit which converts heat energy into electric energy and supplies power for an energy storage device while meeting the electricity demand of a power grid, and the energy storage device converts the electric energy into heat energy to be stored, so that when the electricity demand is large, part of liquid of the thermal power unit is heated by utilizing the heat stored in the energy storage device, and part of liquid of the thermal power unit is converted into steam and then steam is supplied through a steam supply pipeline; when the electricity demand is smaller, the heat stored in the energy storage device is utilized to supply steam, so that the electric load depth of the cogeneration unit can be adjusted downwards, and the peak regulation capacity of the cogeneration unit is effectively improved.
Description
Technical Field
The utility model relates to the technical field of cogeneration, in particular to a cogeneration unit.
Background
The production mode of the power plant for producing electric energy and supplying heat to users by utilizing the steam which is acted by the steam turbine generator refers to the process of simultaneously producing electric energy and heat energy, and compared with the mode of respectively producing electric energy and heat energy, the fuel is saved. A thermal power plant operating in a cogeneration mode is called a thermal power plant, and the unit is also called a cogeneration unit.
At present, in the operation process of the cogeneration unit, the cogeneration unit needs to supply steam. When the electricity demand is large, the full-load power supply of the cogeneration unit can not be realized while the steam supply demand is met due to the limited steam quantity produced by the unit; when the electricity demand is smaller, the further down regulation of the electric load of the cogeneration unit can not be realized while the steam supply demand is met, so that the peak regulation capacity of the cogeneration unit is poor.
Disclosure of Invention
Therefore, the utility model aims to solve the technical problems that full-load power supply of the cogeneration unit cannot be realized when the power consumption requirement is large and the peak regulation capacity of the cogeneration unit is poor when the power consumption requirement is small in the prior art.
In order to solve the technical problems, the utility model provides a cogeneration unit, which comprises:
a thermal power generating unit;
the liquid inlet end of the energy storage device is connected with the liquid outlet end of the thermal power generating unit, and the electricity utilization end of the energy storage device is connected with the power supply end of the thermal power generating unit;
and the two ends of the steam supply pipeline are respectively connected with the steam outlet end of the energy storage device and the steam inlet end of the thermal power generating unit.
In one embodiment of the present utility model, the cogeneration unit further comprises:
the temperature and pressure reducing valve is arranged on the steam supply pipeline.
In one embodiment of the utility model, the energy storage device comprises:
the electric heater is connected with the power supply end of the thermal power unit at the power utilization end, and the liquid inlet end of the electric heater is connected with the liquid outlet end of the thermal power unit;
the liquid outlet end of the low-temperature tank is connected with the liquid inlet end of the electric heater;
the liquid inlet end of the high-temperature tank is connected with the liquid outlet end of the electric heater;
the liquid outlet end of the heat exchanger is connected with the liquid inlet end of the low-temperature tank, and the vapor outlet end of the heat exchanger is connected with one end of the vapor supply pipeline.
In an embodiment of the utility model, the energy storage device further includes a first pump body disposed between the liquid outlet end of the low-temperature tank and the liquid inlet end of the electric heater.
In an embodiment of the utility model, the energy storage device further includes a first pump body disposed between the liquid outlet end of the low-temperature tank and the liquid inlet end of the electric heater.
In one embodiment of the utility model, the energy storage device further comprises a second pump body, which is arranged between the liquid outlet end of the high-temperature tank and the liquid inlet end of the heat exchanger.
In one embodiment of the utility model, the cryogenic tank and the high temperature tank each comprise a steel inner tank and a thermally insulated outer shell.
In one embodiment of the utility model, the insulating housing is a PVC molded insulating housing.
In one embodiment of the present utility model, the cogeneration unit further comprises:
and the power supply end of the wind turbine is connected with the energy storage device.
In one embodiment of the present utility model, the cogeneration unit further comprises:
the solar heat collector is arranged on the heat storage passage of the energy storage device.
In one embodiment of the utility model, the solar collector is a flat-panel solar collector.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
the utility model provides a thermal power unit which converts heat energy into electric energy and supplies power for an energy storage device while meeting the electricity demand of a power grid, and the energy storage device converts the electric energy into heat energy to be stored, so that when the electricity demand is large, part of liquid of the thermal power unit is heated by utilizing the heat stored in the energy storage device, and part of liquid of the thermal power unit is converted into steam and then steam is supplied through a steam supply pipeline; when the electricity demand is smaller, the heat stored in the energy storage device is utilized to supply steam, so that the electric load depth of the cogeneration unit can be adjusted downwards, and the peak regulation capacity of the cogeneration unit is effectively improved.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which
Fig. 1 is a schematic structural view of a cogeneration unit provided by the utility model;
FIG. 2 is a schematic diagram of an energy storage device according to an embodiment of the present utility model;
fig. 3 is a schematic structural diagram of a cogeneration unit according to an embodiment of the utility model;
reference numerals: 1-a thermal power generating unit; 2-a wind turbine generator; 3-an energy storage device; 4-a steam supply pipeline; 5-a solar collector; 6-a temperature and pressure reducing valve; 7-an electric heater; 8-a high temperature tank; 9-a heat exchanger; 10-a low temperature tank; 11-a first pump body; 12-a second pump body.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
Referring to fig. 1, a cogeneration unit provided by the present utility model includes:
a thermal power plant 1;
the liquid inlet end of the energy storage device is connected with the liquid outlet end of the thermal power generating unit, and the electricity utilization end of the energy storage device is connected with the power supply end of the thermal power generating unit;
and the two ends of the steam supply pipeline are respectively connected with the steam outlet end of the energy storage device and the steam inlet end of the thermal power generating unit.
The utility model provides a thermal power unit which converts heat energy into electric energy and supplies power for an energy storage device while meeting the electricity demand of a power grid, and the energy storage device converts the electric energy into heat energy to be stored, so that when the electricity demand is large, part of liquid of the thermal power unit is heated by utilizing the heat stored in the energy storage device, and part of liquid of the thermal power unit is converted into steam and then steam is supplied through a steam supply pipeline; when the electricity demand is smaller, the heat stored in the energy storage device is utilized to supply steam, so that the electric load depth of the cogeneration unit can be adjusted downwards, and the peak regulation capacity of the cogeneration unit is effectively improved.
Based on the above embodiment, the steam supply pipeline is provided with the temperature and pressure reducing valve 6, so that the safety of the steam supply process is ensured.
As shown in fig. 2, based on the above embodiments, the structure of the energy storage device is described in detail in this embodiment, which is specifically as follows:
the energy storage device includes:
the electric heater 7 is connected with the power supply end of the thermal power unit at the power utilization end, and the liquid inlet end of the electric heater is connected with the liquid outlet end of the thermal power unit;
the liquid outlet end of the low-temperature tank 10 is connected with the liquid inlet end of the electric heater;
the liquid inlet end of the high-temperature tank 8 is connected with the liquid outlet end of the electric heater;
the low-temperature tank and the high-temperature tank comprise a steel inner tank and a heat-insulating shell;
the liquid inlet end of the heat exchanger is connected with the liquid outlet end of the high-temperature tank, the liquid outlet end of the heat exchanger is connected with the liquid inlet end of the low-temperature tank, and the vapor outlet end of the heat exchanger is connected with one end of the vapor supply pipeline.
The first pump body 11 is arranged between the liquid outlet end of the low-temperature tank and the liquid inlet end of the electric heater.
The second pump body 12 is arranged between the liquid outlet end of the high-temperature tank and the liquid inlet end of the heat exchanger.
The heat storage process of the energy storage device provided by the utility model is as follows: the low-temperature molten salt in the low-temperature tank absorbs heat in the heater after being boosted by the first pump body, then enters the high-temperature tank for storage, and the exothermic process in the energy storage device is as follows: the high-temperature molten salt in the high-temperature tank releases heat in the heat exchanger after being boosted by the second pump body, then enters the low-temperature tank for storage, and steam generated by the heat exchanger in the heat release process enters the steam supply pipeline for external supply.
Based on the above embodiments, the cogeneration unit according to the present utility model further includes:
and the power supply end of the wind turbine generator is connected with the energy storage device.
Based on the above embodiments, the cogeneration unit according to the present utility model further includes:
the solar heat collector 5 is arranged on the heat storage passage of the energy storage device, and is a flat-plate solar heat collector.
According to the utility model, through power supply of the wind turbine generator and heat supply of the solar heat collector, not only is the energy consumption of the thermal power generating unit reduced and the steam supply cost of the cogeneration unit reduced, but also clean energy is fully utilized, the utilization efficiency of the clean energy is improved, and meanwhile, the carbon emission is reduced, so that the aims of carbon peak reaching and carbon neutralization are fulfilled.
As shown in fig. 3, fig. 3 is a schematic structural diagram of a cogeneration unit according to an embodiment of the utility model; the utility model discloses a heat and power cogeneration unit which realizes steam supply under the cooperation of multiple energy sources, and specifically comprises the following components: the thermal power generating unit converts heat energy into electric energy and supplies power for the energy storage device while meeting the power grid electricity demand, the wind power generating unit converts wind energy into electric energy and supplies power for the energy storage device, the energy storage device converts the electric energy into heat energy to be stored together, and meanwhile, the solar heat collector converts the light energy into heat energy to be stored in the energy storage device, so that the energy storage device can heat part of liquid discharged by the thermal power generating unit, and part of liquid discharged by the thermal power generating unit is converted into steam and then is supplied with steam through the steam supply pipeline.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (10)
1. A cogeneration unit, comprising:
a thermal power generating unit;
the liquid inlet end of the energy storage device is connected with the liquid outlet end of the thermal power generating unit, and the electricity utilization end of the energy storage device is connected with the power supply end of the thermal power generating unit;
and the two ends of the steam supply pipeline are respectively connected with the steam outlet end of the energy storage device and the steam inlet end of the thermal power generating unit.
2. The cogeneration unit of claim 1, further comprising:
the temperature and pressure reducing valve is arranged on the steam supply pipeline.
3. A cogeneration unit according to claim 1, wherein said energy storage device comprises:
the electric heater is connected with the power supply end of the thermal power unit at the power utilization end, and the liquid inlet end of the electric heater is connected with the liquid outlet end of the thermal power unit;
the liquid outlet end of the low-temperature tank is connected with the liquid inlet end of the electric heater;
the liquid inlet end of the high-temperature tank is connected with the liquid outlet end of the electric heater;
the liquid outlet end of the heat exchanger is connected with the liquid inlet end of the low-temperature tank, and the vapor outlet end of the heat exchanger is connected with one end of the vapor supply pipeline.
4. A cogeneration unit according to claim 3, wherein said energy storage device further comprises a first pump body disposed between the liquid outlet end of said cryogenic tank and the liquid inlet end of said electric heater.
5. A cogeneration unit according to claim 3, wherein said energy storage device further comprises a second pump body disposed between the liquid outlet end of said high temperature tank and the liquid inlet end of said heat exchanger.
6. A cogeneration unit according to claim 3, wherein said low temperature tank and high temperature tank each comprise a steel inner tank and a insulated outer shell.
7. The cogeneration unit of claim 6, wherein the insulated housing is a PVC molded insulated housing.
8. The cogeneration unit of claim 1, further comprising:
and the power supply end of the wind turbine is connected with the energy storage device.
9. The cogeneration unit of claim 1, further comprising:
the solar heat collector is arranged on the heat storage passage of the energy storage device.
10. The cogeneration unit of claim 9, wherein the solar collector is a flat-panel solar collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320874853.2U CN219974587U (en) | 2023-04-18 | 2023-04-18 | Combined heat and power generation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320874853.2U CN219974587U (en) | 2023-04-18 | 2023-04-18 | Combined heat and power generation unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219974587U true CN219974587U (en) | 2023-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320874853.2U Active CN219974587U (en) | 2023-04-18 | 2023-04-18 | Combined heat and power generation unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219974587U (en) |
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2023
- 2023-04-18 CN CN202320874853.2U patent/CN219974587U/en active Active
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