CN213807869U - Gas turbine air inlet double-loop cooling system utilizing refrigerating capacity allowance of refrigerating station - Google Patents
Gas turbine air inlet double-loop cooling system utilizing refrigerating capacity allowance of refrigerating station Download PDFInfo
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- CN213807869U CN213807869U CN202022718326.1U CN202022718326U CN213807869U CN 213807869 U CN213807869 U CN 213807869U CN 202022718326 U CN202022718326 U CN 202022718326U CN 213807869 U CN213807869 U CN 213807869U
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Abstract
The utility model discloses an utilize gas turbine of refrigeration station cold volume surplus to admit air two return circuit cooling system. The system comprises a refrigeration station, a cold user, a cooling heat exchanger and a gas turbine; the main pipeline of the refrigeration station is connected with a water inlet of a cold user, the branch pipeline is connected with a primary water inlet of the cooling heat exchanger, and a primary water outlet of the cooling heat exchanger converges into a chilled water return main pipe; the main pipeline of the cold user is connected with the chilled water return main pipe, the branch pipeline is connected with a secondary water inlet of the cooling heat exchanger through a branch pipeline, and a secondary water outlet of the cooling heat exchanger converges into the chilled water return main pipe; the chilled water return main pipe is connected with a return water port of the refrigerating station, the outside air is connected with a gas inlet of the cooling heat exchanger, and a gas outlet of the cooling heat exchanger is connected with a gas inlet of the gas turbine. The two-stage cooling heat exchanger is additionally arranged at the inlet of the gas turbine, and the inlet air of the gas turbine is cooled by utilizing the backwater of the chilled water, so that the inlet air temperature of the gas turbine is reduced.
Description
Technical Field
The utility model belongs to the technical field of the combined cycle power generation, concretely relates to utilize gas turbine of refrigeration station cold volume surplus to admit air two return circuit cooling system.
Background
The combined cycle generator set has the characteristics of quick start and quick peak regulation, and plays an increasingly important role in the peak regulation of the power grid along with the gradual increase of the specific gravity of the installed power generation capacity of the combined cycle generator set in the power grid. However, in the summer of high ambient temperature, the output and thermal efficiency of the combined cycle plant are severely reduced due to the increased inlet gas temperature of the gas turbine, and both the peak shaving capacity and the plant performance are affected.
For the distributed combined cycle unit, a refrigeration station is often matched to realize the combined supply of cold, heat and electricity of distributed energy, and the refrigeration capacity of the refrigeration station is often surplus and not fully utilized, so that the cooling heat exchanger can be used for cooling the inlet air of the gas turbine by utilizing the cold capacity of the refrigeration station, and the output power and the heat efficiency of the unit are improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an utilize gas turbine of refrigeration station cold volume surplus to admit air two return circuit cooling system through utilizing the refrigeration station cold volume surplus, realizes gas turbine cooling of admitting air under relatively lower investment cost to promote the distributed combined cycle unit and exert oneself and the thermal efficiency under the high ambient temperature operating condition in summer.
The utility model discloses a following technical scheme realizes:
a gas turbine air inlet double-loop cooling system utilizing cooling capacity allowance of a refrigeration station comprises the refrigeration station, a cooling user, a cooling heat exchanger and a gas turbine;
the water outlet pipeline of the refrigeration station is divided into two paths, the main path pipeline is connected with a water inlet of a cold user, the branch pipeline is connected with a primary water inlet of the cooling heat exchanger, and a primary water outlet of the cooling heat exchanger converges into the chilled water return main pipe;
the water outlet pipeline of the cold user is divided into two paths, the main path pipeline is connected with the chilled water return main pipe, the branch pipeline is connected with the secondary water inlet of the cooling heat exchanger, and the secondary water outlet of the cooling heat exchanger converges into the chilled water return main pipe;
the chilled water return main pipe is connected with a return water port of the refrigerating station, the outside air is connected with a gas inlet of the cooling heat exchanger, and a gas outlet of the cooling heat exchanger is connected with a gas inlet of the gas turbine.
As a further improvement of the utility model, a branch pipeline of the water outlet pipeline of the refrigeration station is connected with a primary water inlet of the cooling heat exchanger through a primary chilled water to cooling heat exchanger regulating valve; and a primary water outlet of the cooling heat exchanger is converged into a chilled water return main pipe through a primary chilled water return electric valve.
As a further improvement of the utility model, the water outlet pipeline branch pipeline of the cooling user is connected with the second-stage water inlet of the cooling heat exchanger through the electrically operated valve of the second-stage chilled water to the cooling heat exchanger; and the main pipeline of the water outlet pipeline is connected with a chilled water return stop valve.
As a further improvement, the cooling heat exchanger is a two-stage tube-fin heat exchanger, the cold fluid is water, the hot fluid is air, and the two-stage cold fluid pipeline mutual independence of the cooling heat exchanger.
As a further improvement of the utility model, the hot-fluid side bottom of the cooling heat exchanger is provided with a condensate water outlet.
As a further improvement of the utility model, a condensate water drainage electric valve is arranged on the condensate water outlet of the cooling heat exchanger.
As a further improvement, the utility model is provided with the frequency conversion booster pump on the mother pipe of refrigerated water return, the frequency conversion booster pump is connected with the return water mouth at refrigeration station.
A control method of a gas turbine air inlet double-loop cooling system utilizing refrigerating capacity allowance of a refrigerating station comprises the following steps:
the water outlet of the refrigerating station is divided into two paths, the main path exchanges heat with a cold user, the chilled water backwater formed after heat exchange flows into the refrigerating station, the branch path exchanges primary heat with the cooling heat exchanger, and the primary water outlet after heat exchange converges into the chilled water return;
the water outlet of the cold user is divided into two paths, the main path is chilled water return, the branch path and the cooling heat exchanger perform secondary heat exchange, and the chilled water return is converged at the secondary water outlet after heat exchange;
and the outside air enters the gas turbine after being cooled by the cooling heat exchanger.
The utility model discloses at least, following profitable technological effect has:
the utility model provides a pair of utilize gas turbine of refrigeration station cold volume surplus to admit air two-circuit cooling system through addding two-stage cooling heat exchanger in the gas turbine import, utilizes the refrigerated water of refrigeration station export to intake and the refrigerated water return water of cold consumer export, cools off gas turbine import air to reduce gas turbine import air temperature. The system can realize the inlet air cooling of the gas turbine at relatively low investment cost, thereby improving the output and the heat efficiency of the distributed combined cycle unit under the condition of high ambient temperature operation in summer. Meanwhile, the system is provided with a double-loop cooling pipeline, and the flow of the double-loop chilled water can be adjusted according to environmental parameters, so that the operation optimization of the system is realized.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Description of reference numerals:
1. the system comprises a refrigeration station, 2, a refrigeration user, 3, a variable-frequency booster pump, 4, a cooling heat exchanger, 5, a gas turbine, V1, a chilled water return stop valve, V2, a primary chilled water to cooling heat exchanger regulating valve, V3, a primary chilled water return electric valve, V4, a secondary chilled water to cooling heat exchanger electric valve, V5, a secondary chilled water return electric valve, V6 and a condensed water drainage electric valve.
Detailed Description
In order to make the purpose and technical scheme of the utility model clearer and more convenient to understand. The present invention will be described in further detail with reference to the following drawings and examples, wherein the specific examples are provided for the purpose of illustration only and are not intended to be limiting.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, the utility model provides a gas turbine inlet double-loop cooling system using refrigeration capacity surplus of refrigeration station, including refrigeration station 1, cold user 2, booster pump 3, cooling heat exchanger 4, gas turbine 5, wherein the outlet conduit of refrigeration station 1 is divided into two routes, wherein the main conduit is connected with the water inlet of cold user 2, the branch conduit is connected with the primary water inlet of cooling heat exchanger 4 through primary chilled water to cooling heat exchanger governing valve V2, the primary chilled water return of the primary water outlet of cooling heat exchanger 4 is converged into the chilled water return main pipe through primary chilled water return electric valve V3, the outlet conduit of cold user 2 is divided into two routes, wherein the main conduit is connected with chilled water return stop valve V1, chilled water return stop valve V1 is connected with the water inlet of frequency conversion pump 3, the branch conduit is connected with the secondary water inlet of cooling heat exchanger 4 through secondary chilled water to cooling heat exchanger V4, the secondary chilled water backwater at the secondary water outlet of the cooling heat exchanger 4 is converged into a chilled water backwater main pipe through a secondary chilled water backwater electric valve V5, the chilled water backwater main pipe is connected with a backwater port of the variable-frequency booster pump 3 and the variable-frequency booster pump 1, the outside air is cooled by the cooling heat exchanger 4 and then enters the gas turbine 5, and the cooling condensate water generated in the cooling heat exchanger 4 in the cooling process is discharged into a trench through a condensate water drainage electric valve V6.
Wherein, the cooling heat exchanger 4 is a two-stage tube-fin heat exchanger, the cold fluid is water, the hot fluid is air, and the two-stage cold fluid pipelines are mutually independent. And a condensate water outlet is arranged at the bottom of the hot fluid side of the cooling heat exchanger 4.
The chilled water for cooling the inlet air of the gas turbine has two paths, which are respectively taken from the water outlet pipeline of the refrigeration station 1 and the water outlet pipeline of the cooling user 2.
The system is provided with a variable-frequency booster pump 3, and the total flow of chilled water is controlled according to actual operation requirements.
Preferably, the system is provided with a primary chilled water-cooling heat exchanger regulating valve V2, and the flow of the primary chilled water is controlled according to actual operating conditions, so that the optimal control of the system is realized.
The utility model relates to an utilize gas turbine of refrigeration station cold volume surplus to admit air two return circuit cooling system principle does: the two-stage cooling heat exchanger is additionally arranged at the inlet of the gas turbine, and the inlet of chilled water at the outlet of the refrigeration station and the return of the chilled water at the outlet of a cold user are utilized to cool the inlet air of the gas turbine, so that the inlet air temperature of the gas turbine is reduced. The system can realize the inlet air cooling of the gas turbine at relatively low investment cost, thereby improving the output and the heat efficiency of the distributed combined cycle unit under the condition of high ambient temperature operation in summer. Meanwhile, the system is provided with a double-loop cooling pipeline, and the flow of the double-loop chilled water can be adjusted according to environmental parameters, so that the operation optimization of the system is realized.
The utility model also provides a control method of the gas turbine double-circuit cooling system that admits air that utilizes refrigeration capacity surplus in refrigeration station, including following step:
the water outlet of the refrigerating station 1 is divided into two paths, the main path exchanges heat with the cold user 2, the chilled water return water formed after heat exchange flows into the refrigerating station 1, the branch path exchanges primary heat with the cooling heat exchanger 4, and the primary water outlet after heat exchange converges into the chilled water return water;
the water outlet of the cold user 2 is divided into two paths, the main path is chilled water return, the branch path and the cooling heat exchanger 4 perform secondary heat exchange, and the chilled water return is converged at the secondary water outlet after heat exchange;
the outside air is cooled by the cooling heat exchanger 4 and enters the gas turbine 5.
The above embodiments are only for illustrating the technical conception and the features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which should not limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (7)
1. A gas turbine air inlet double-loop cooling system utilizing cooling capacity allowance of a refrigeration station is characterized by comprising the refrigeration station, a cooling user, a cooling heat exchanger and a gas turbine;
the water outlet pipeline of the refrigeration station is divided into two paths, the main path pipeline is connected with a water inlet of a cold user, the branch pipeline is connected with a primary water inlet of the cooling heat exchanger, and a primary water outlet of the cooling heat exchanger converges into the chilled water return main pipe;
the water outlet pipeline of the cold user is divided into two paths, the main path pipeline is connected with the chilled water return main pipe, the branch pipeline is connected with the secondary water inlet of the cooling heat exchanger, and the secondary water outlet of the cooling heat exchanger converges into the chilled water return main pipe;
the chilled water return main pipe is connected with a return water port of the refrigerating station, the outside air is connected with a gas inlet of the cooling heat exchanger, and a gas outlet of the cooling heat exchanger is connected with a gas inlet of the gas turbine.
2. The gas turbine air inlet double-loop cooling system utilizing the refrigerating capacity margin of the refrigerating station as claimed in claim 1, wherein a branch pipeline of an outlet pipeline of the refrigerating station is connected with a primary water inlet of a cooling heat exchanger through a primary chilled water-to-cooling heat exchanger regulating valve; and a primary water outlet of the cooling heat exchanger is converged into a chilled water return main pipe through a primary chilled water return electric valve.
3. The gas turbine inlet double-loop cooling system utilizing the refrigerating capacity margin of the refrigerating station as claimed in claim 1, wherein a water outlet pipeline branch pipeline of the cold consumer is connected with a secondary water inlet of the cooling heat exchanger through a secondary chilled water to cooling heat exchanger electric valve; and the main pipeline of the water outlet pipeline is connected with a chilled water return stop valve.
4. The gas turbine air intake double-loop cooling system utilizing the refrigeration capacity margin of the refrigeration station as claimed in claim 1, wherein the cooling heat exchanger is a two-stage tube fin type heat exchanger, the cold fluid is water, the hot fluid is air, and two stages of cold fluid pipelines of the cooling heat exchanger are mutually independent.
5. The gas turbine inlet double-loop cooling system utilizing the refrigerating capacity margin of the refrigerating station as recited in claim 1, wherein a condensate water outlet is arranged at the bottom of the hot fluid side of the cooling heat exchanger.
6. The gas turbine inlet double-loop cooling system utilizing the refrigerating capacity margin of the refrigerating station as claimed in claim 5, wherein a condensate water drainage electric valve is arranged on a condensate water drainage port of the cooling heat exchanger.
7. The gas turbine inlet double-loop cooling system utilizing the cooling capacity margin of the refrigerating station as claimed in claim 1, wherein a variable frequency booster pump is arranged on the chilled water return main pipe, and the variable frequency booster pump is connected with a return water port of the refrigerating station.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022718326.1U CN213807869U (en) | 2020-11-21 | 2020-11-21 | Gas turbine air inlet double-loop cooling system utilizing refrigerating capacity allowance of refrigerating station |
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| CN202022718326.1U CN213807869U (en) | 2020-11-21 | 2020-11-21 | Gas turbine air inlet double-loop cooling system utilizing refrigerating capacity allowance of refrigerating station |
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| CN213807869U true CN213807869U (en) | 2021-07-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302807A (en) * | 2020-11-21 | 2021-02-02 | 西安热工研究院有限公司 | Gas turbine air inlet double-loop cooling system and method utilizing cooling capacity allowance of refrigerating station |
| CN117490203A (en) * | 2023-12-28 | 2024-02-02 | 珠海格力电器股份有限公司 | Control method and device of air conditioning system, air conditioning system and storage medium |
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2020
- 2020-11-21 CN CN202022718326.1U patent/CN213807869U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302807A (en) * | 2020-11-21 | 2021-02-02 | 西安热工研究院有限公司 | Gas turbine air inlet double-loop cooling system and method utilizing cooling capacity allowance of refrigerating station |
| CN117490203A (en) * | 2023-12-28 | 2024-02-02 | 珠海格力电器股份有限公司 | Control method and device of air conditioning system, air conditioning system and storage medium |
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