CN216384666U - Distributed energy cascade refrigeration system - Google Patents
Distributed energy cascade refrigeration system Download PDFInfo
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- CN216384666U CN216384666U CN202123195257.1U CN202123195257U CN216384666U CN 216384666 U CN216384666 U CN 216384666U CN 202123195257 U CN202123195257 U CN 202123195257U CN 216384666 U CN216384666 U CN 216384666U
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Abstract
The application discloses a distributed energy cascade refrigeration system, which comprises a gas turbine power generation unit, a smoke hot water type refrigerating unit and an electric refrigerating unit; the gas turbine power generation unit with connect first flue gas pipeline between the flue gas hot water type refrigerating unit, first cooling pipeline is connected to flue gas hot water type refrigerating unit, the second cooling pipeline is connected to the electric refrigerating unit, first cooling pipeline with connect first branch pipe between the return water mouth of electric refrigerating unit, first branch pipe sets up first branch pipe valve. Above-mentioned distributed energy step refrigerating system can utilize flue gas hot water type refrigerating unit to supply cold with the help of the waste heat refrigeration of flue gas, can also utilize the refrigeration of electric refrigerating unit to supply cold, can utilize the refrigerated water of electric refrigerating unit to flue gas hot water type refrigerating unit preparation further subcooling simultaneously, improves refrigeration effect, satisfies the cooling demand of remote cooling.
Description
Technical Field
The application relates to the field of comprehensive energy system planning and design, in particular to a distributed energy cascade refrigeration system.
Background
The energy development level is an important index for measuring the comprehensive national strength and civilized development degree of a country. The distributed energy system can output various energy products such as electricity, cold and heat to users nearby, and is an important form of city group energy supply. The existing distributed energy system generally adopts a lithium bromide refrigeration or electric refrigeration mode to realize refrigeration, but the refrigeration effect is poor under the condition of remote cooling.
SUMMERY OF THE UTILITY MODEL
The purpose of this application is to provide a distributing type energy step refrigerating system, and this refrigerating system can enough utilize flue gas hot water type refrigerating unit and electric refrigerating unit to refrigerate the cooling alone, can jointly realize the gradient refrigeration again, improves refrigeration effect, satisfies the cooling demand of remote cooling.
In order to achieve the purpose, the application provides a distributed energy cascade refrigeration system, which comprises a gas turbine power generation unit, a smoke hot water type refrigeration unit and an electric refrigeration unit; the gas turbine power generation unit with connect first flue gas pipeline between the flue gas hot water type refrigerating unit, first cooling pipeline is connected to flue gas hot water type refrigerating unit, the second cooling pipeline is connected to the electric refrigerating unit, first cooling pipeline with connect first branch pipe between the return water mouth of electric refrigerating unit, first branch pipe sets up first branch pipe valve.
Optionally, the system further comprises a flue gas-water heat exchanger, and a second flue gas pipeline is connected between the flue gas side of the flue gas-water heat exchanger and the smoke outlet of the flue gas hot water type refrigerating unit.
Optionally, the flue gas hot water type refrigerating unit is a flue gas hot water type lithium bromide refrigerating unit.
Optionally, the gas turbine power generation unit comprises a gas turbine and a power generator, and a circulating water pipe is connected between a cylinder sleeve of the gas turbine and the flue gas hot water type refrigerating unit, so that the flue gas hot water type refrigerating unit utilizes hot water in the cylinder sleeve for refrigeration.
Optionally, the circulating water pipe is provided with a circulating water valve, a temperature detection module is arranged in the cylinder sleeve, the temperature detection module and the circulating water valve are connected with a controller, and the controller controls the circulating water valve to be opened when the temperature of cooling water in the cylinder sleeve exceeds a set value.
Optionally, the first cooling duct and the second cooling duct are provided with a booster pump.
Optionally, a second branch pipe is connected between the second cooling pipeline and the first cooling pipeline, and a second branch pipe valve is arranged on the second branch pipe.
Compared with the prior art, the distributed energy cascade refrigeration system that this application provided can satisfy to user's power supply and cooling demand, flue gas hot water type refrigerating unit can utilize gas turbine power generation unit's flue gas waste heat refrigeration, electric refrigerating unit and flue gas hot water type refrigerating unit can be simultaneously or alternate operation, satisfy different refrigeration load and peak regulation demand, and the low temperature refrigerated water of flue gas hot water type refrigerating unit preparation can be according to the cooling demand, it further supercools to advance to enter electric refrigerating unit through first branch pipe, improve refrigeration effect, satisfy remote cooling demand.
In addition, the distributed energy cascade refrigeration system further comprises a flue gas-water heat exchanger, and the flue gas waste heat discharged by the flue gas hot water type refrigeration unit is utilized to exchange heat with water, so that the heating/hot water requirements of users are met.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a system diagram of a distributed energy cascade refrigeration system according to an embodiment of the present disclosure.
Wherein:
the system comprises a gas turbine 1, a first flue gas pipeline 2, a flue gas hot water type refrigerating unit 3, a second flue gas pipeline 4, a flue gas-water heat exchanger 5, a first cooling pipeline 6, an electric refrigerating unit 7, a second cooling pipeline 8, a first branch pipe 9, a first branch pipe 10, a first branch pipe valve 11, a pressure pump 12, a second branch pipe 13, a second branch pipe valve 13 and a circulating water pipe 14.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to enable those skilled in the art to better understand the scheme of the present application, the present application will be described in further detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, an embodiment of the present application provides a distributed energy cascade refrigeration system, which is capable of supplying power and cooling to users; comprises a gas turbine power generation unit, a smoke hot water type refrigerating unit 3 and an electric refrigerating unit 7; the gas turbine power generation unit comprises a gas turbine 1 and a power generator, the gas turbine 1 drives the power generator to generate power, the flue gas exhausted by the gas turbine 1 flows to a flue gas hot water type refrigerating unit 3 through a first flue gas pipeline 2, so that the flue gas hot water type refrigerating unit 3 utilizes the flue gas waste heat of the gas turbine 1 to prepare chilled water, the chilled water is supplied to a user, and meanwhile, the electric refrigerating unit 7 can utilize the electric power of a power grid to prepare the chilled water. The flue gas hot water type refrigerating unit 3 and the electric refrigerating unit 7 can alternately or simultaneously operate according to the change of user load and the peak load regulation requirement of a power grid. The flue gas hot water type refrigerating unit 3 supplies cold to a user through the first cold supply pipeline 6, the electric refrigerating unit 7 is refrigerated through the second cold supply pipeline 8, and cold supply backwater enters the unit again through the backwater ports of the two for refrigeration. Furthermore, a first branch pipe 9 is connected between the first cold supply pipeline 6 and a water return port of the electric refrigerating unit 7, the first branch pipe valve 10 is adjusted to be opened, and return water enters the electric refrigerating unit 7 through the first branch pipe 9 to be supercooled after being refrigerated by the smoke hot water type refrigerating unit 3, so that the supercooling degree of chilled water is remarkably improved, the refrigerating effect is improved, and the cold supply requirement of a remote user is met.
The first cooling pipeline 6 and the second cooling pipeline 8 are merged and driven by a pressurizing pump 11 to supply cooling to users. A second branch pipe 12 can be connected between the second cold supply pipeline 8 and the first cold supply pipeline 6 as required, the second branch pipe 12 is provided with a second branch pipe valve 13, and the first cold supply pipeline 6 and the second cold supply pipeline 8 are correspondingly provided with on-off control valves so as to flexibly adjust the refrigeration and cold supply working conditions according to the operation requirements.
In addition, the first cooling duct 6 and the second cooling duct 8 can also supply cooling to the user, and at this time, the first cooling duct 6 and the second cooling duct 8 are both provided with the pressurizing pump 11.
On the basis of the above embodiment, the distributed energy cascade refrigeration system further includes a flue gas-water heat exchanger 5, a flue gas side of the flue gas-water heat exchanger 5 is connected with a smoke outlet of the flue gas hot water type refrigeration unit 3 through a second flue gas pipeline 4, and a water side of the flue gas-water heat exchanger 5 is used for introducing water to further absorb flue gas waste heat, so as to realize heating or providing domestic hot water for users, fully utilize the flue gas waste heat, and improve the system efficiency. The flue gas hot water type refrigerating unit 3 is specifically a flue gas hot water type lithium bromide refrigerating unit, and the refrigerating principles of the flue gas hot water type lithium bromide refrigerating unit and the electric refrigerating unit 7 can refer to the prior art.
In addition, the flue gas hot water type lithium bromide refrigerating unit can not only utilize the flue gas waste heat of the gas turbine 1 for refrigeration, but also utilize the heat of hot water (cooling water) in a cylinder liner of the gas turbine 1 for refrigeration. Specifically, the flue gas hot water type lithium bromide refrigeration unit is provided with a hot water inlet and a hot water outlet, a cylinder sleeve of the gas turbine 1 is provided with a cooling water inlet and a cooling water outlet, a circulating water pipe 14 is connected among the hot water inlet, the hot water outlet, the cooling water inlet and the cooling water outlet, cooling water heated in the cylinder sleeve flows out of the cooling water outlet, enters the flue gas hot water type lithium bromide refrigeration unit through the circulating water pipe 14 and the hot water inlet to exchange heat and cool, then flows out of the hot water outlet, and then enters the cylinder sleeve of the gas turbine 1 again through the circulating water pipe 14 and the cooling water inlet to absorb heat. The circulating water pipe 14 may be provided with a circulating water pump and a circulating water valve as required, and will not be described in detail herein.
In the above embodiment, in order to improve the refrigeration efficiency of the flue gas hot water type lithium bromide refrigeration unit, a temperature detection module is further arranged in the cylinder sleeve or on the outer wall of the cylinder sleeve, the temperature detection module is connected with the controller, and the controller is connected with the circulating water pump and the circulating water valve. The temperature of cooling water in the cylinder sleeve is directly or indirectly detected by the temperature detection module, when the temperature detected by the temperature detection module exceeds a set value, the controller controls the circulating water valve to be opened, the circulating water pump is started, and the water inlet temperature of the smoke hot water type lithium bromide refrigerating unit is guaranteed.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The distributed energy cascade refrigeration system provided by the present application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (7)
1. A distributed energy cascade refrigeration system is characterized by comprising a gas turbine power generation unit, a smoke hot water type refrigerating unit and an electric refrigerating unit; the gas turbine power generation unit with connect first flue gas pipeline between the flue gas hot water type refrigerating unit, first cooling pipeline is connected to flue gas hot water type refrigerating unit, the second cooling pipeline is connected to the electric refrigerating unit, first cooling pipeline with connect first branch pipe between the return water mouth of electric refrigerating unit, first branch pipe sets up first branch pipe valve.
2. The distributed energy cascade refrigeration system of claim 1, further comprising a flue gas-water heat exchanger, wherein a second flue gas duct is connected between a flue gas side of the flue gas-water heat exchanger and a smoke outlet of the flue gas hot water type refrigeration unit.
3. The distributed energy cascade refrigeration system of claim 1, wherein the flue gas hot water type refrigeration unit is a flue gas hot water type lithium bromide refrigeration unit.
4. The distributed energy cascade refrigeration system according to any one of claims 1 to 3, wherein the gas turbine power generation unit comprises a gas turbine and a power generator, and a circulating water pipe is connected between a cylinder sleeve of the gas turbine and the flue gas hot water type refrigeration unit, so that the flue gas hot water type refrigeration unit utilizes hot water in the cylinder sleeve for refrigeration.
5. The distributed energy cascade refrigeration system according to claim 4, wherein the circulating water pipe is provided with a circulating water valve, a temperature detection module is arranged in the cylinder sleeve, the temperature detection module and the circulating water valve are connected with a controller, and the controller controls the circulating water valve to be opened when the temperature of cooling water in the cylinder sleeve exceeds a set value.
6. The distributed energy cascade refrigeration system of claim 4, wherein the first cooling conduit and the second cooling conduit are provided with booster pumps.
7. The distributed energy cascade refrigeration system of claim 6, wherein a second branch is connected between the second cooling conduit and the first cooling conduit, the second branch providing a second branch valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123195257.1U CN216384666U (en) | 2021-12-16 | 2021-12-16 | Distributed energy cascade refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123195257.1U CN216384666U (en) | 2021-12-16 | 2021-12-16 | Distributed energy cascade refrigeration system |
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| Publication Number | Publication Date |
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| CN216384666U true CN216384666U (en) | 2022-04-26 |
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| CN202123195257.1U Active CN216384666U (en) | 2021-12-16 | 2021-12-16 | Distributed energy cascade refrigeration system |
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| CN (1) | CN216384666U (en) |
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2021
- 2021-12-16 CN CN202123195257.1U patent/CN216384666U/en active Active
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