CN217520112U - Running chilled water system - Google Patents
Running chilled water system Download PDFInfo
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- CN217520112U CN217520112U CN202220619362.9U CN202220619362U CN217520112U CN 217520112 U CN217520112 U CN 217520112U CN 202220619362 U CN202220619362 U CN 202220619362U CN 217520112 U CN217520112 U CN 217520112U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The embodiment of this application provides an operation chilled water system, includes: the system comprises a water tank, a first pipeline and a first cold storage tank; the first cold storage tank is provided with a first opening and a second opening, the first end of the first pipeline is communicated with the outlet of the water tank, and the second end of the first pipeline sequentially penetrates through the first opening and the second opening to be communicated with cold-requiring equipment outside the system; and ice blocks are arranged in the first cold storage tank. The operation chilled water system can provide a chilled water source for the cold-requiring equipment outside the system through the cold storage tank with the ice blocks inside, so that the cold supply efficiency is improved.
Description
Technical Field
The application relates to the technical field of nuclear power plant safety, in particular to a chilled water running system.
Background
An operating chilled water system is arranged in the nuclear island of the nuclear power plant, and a chilled water cooling source is provided for a non-safety air conditioning ventilation system and other required users in the nuclear island.
At present, the operation chilled water system is provided with a plurality of (3-5) water chiller trains to continuously operate to prepare chilled water so as to meet the cold demand of cold demand equipment, and the cold supply efficiency is low.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides an operation chilled water system, can solve the problem that current operation chilled water system cooling efficiency is low.
In order to solve the technical problem, the present application is implemented as follows:
the embodiment of the application provides an operation chilled water system, includes: the system comprises a water tank, a first pipeline and a first cold storage tank;
the first cold storage tank is provided with a first opening and a second opening, the first end of the first pipeline is communicated with the outlet of the water tank, and the second end of the first pipeline sequentially penetrates through the first opening and the second opening to be communicated with cold-requiring equipment outside the system;
and ice blocks are arranged in the first cold storage tank.
Optionally, the system further comprises a second pipeline and a first water chilling unit;
the first heat-storage tank is also provided with a third opening and a fourth opening, the first end of the second pipeline is communicated with the first output end of the first water chilling unit, and the second end of the second pipeline sequentially penetrates through the third opening and the fourth opening and is communicated with the first input end of the first water chilling unit;
and cooling liquid is arranged in the second pipeline.
Optionally, the system further comprises a third pipeline and a fourth pipeline;
the first end of the third pipeline is communicated with the third end of the first pipeline, and the second end of the third pipeline is communicated with the second input end of the water chilling unit;
and the first end of the fourth pipeline is communicated with the second output end of the first water chilling unit, and the second end of the fourth pipeline is communicated with a cold-requiring device.
Optionally, the system further comprises a fifth pipeline and a second heat-storage tank;
a fifth opening and a sixth opening are formed in the second cold storage tank, a first end of the fifth pipeline is communicated with a fifth end of the first pipeline, and a second end of the fifth pipeline is communicated with the cold-requiring equipment through the fifth opening and the sixth opening;
the fourth end of the first conduit is located between the first end of the first conduit and the third end of the first conduit.
Optionally, the system further comprises a sixth pipeline and a second water chilling unit;
a seventh opening and an eighth opening are further formed in the second cold storage tank, a first end of a sixth pipeline is communicated with a first output end of the second water chilling unit, and a second end of the sixth pipeline sequentially penetrates through the seventh opening and the eighth opening and is communicated with a first input end of the second water chilling unit;
and cooling liquid is arranged in the sixth pipeline.
Optionally, the system further comprises a seventh pipeline and an eighth pipeline;
the first end of the seventh pipeline is communicated with the fifth end of the first pipeline, and the second end of the seventh pipeline is communicated with the second input end of the second water chilling unit;
the first end of the eighth pipeline is communicated with the second output end of the second water chilling unit, and the second end of the eighth pipeline is communicated with the cold-requiring equipment;
the fifth end of the first conduit is located between the first end of the first conduit and the fourth end of the first conduit.
Optionally, the system further includes a ninth pipe, a first end of the ninth pipe is communicated with an output end of the cooling demand equipment, and a second end of the ninth pipe is communicated with a sixth end of the first pipe;
the sixth end of the first conduit is located between the fifth end of the first conduit and the first end of the first conduit.
Optionally, a valve is disposed on each of the first pipeline, the second pipeline and the ninth pipeline, and is used for communicating or cutting off the pipeline where the valve is located.
Optionally, the cooling liquid is ethylene glycol.
Optionally, the water tank is an expansion tank.
In the technical scheme that this application embodiment provided, this operation refrigerated water system includes water tank, first pipeline and first cold storage tank, is provided with first opening and second opening on the first cold storage tank, and the first end of first pipeline is linked together with the export of water tank, and the second end passes first opening and second opening in proper order and is linked together with the needs refrigeration plant that is located the system outside, is provided with the ice-cube in the first cold storage tank. Above-mentioned operation refrigerated water system can provide the refrigerated water source for the outside needs cold equipment of system through the inside cold storage tank that is provided with the ice-cube to improve cooling efficiency.
Drawings
Fig. 1 is a schematic operation diagram of a chilled water system according to an embodiment of the present disclosure.
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 some, but not all, embodiments of the present application. 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.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. As used in this application, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an operating chilled water system according to an embodiment of the present disclosure, the system including: a water tank 10, a first pipe, and a first heat-storage tank 20;
the first cold storage tank 20 is provided with a first opening 21 and a second opening 22, a first end of the first pipeline is communicated with an outlet of the water tank 10, and a second end of the first pipeline sequentially passes through the first opening 21 and the second opening 22 to be communicated with a device which needs cooling and is positioned outside the system;
ice cubes are provided in the first heat-storage tank 20.
Wherein, in the water that flows out in the box got into first pipeline, the ice-cube in the first cold storage tank 20 was to passing the partial first pipeline pipe wall cooling in the first cold storage tank 20 to make the water cooling in the first pipeline, provide its required refrigerated water source for the equipment that needs cooling.
In the technical scheme provided by the embodiment of the application, the operation chilled water system comprises a water tank 10, a first pipeline and a first cold storage tank 20, wherein a first opening 21 and a second opening 22 are arranged on the first cold storage tank 20, the first end of the first pipeline is communicated with an outlet of the water tank 10, the second end of the first pipeline sequentially penetrates through the first opening 21 and the second opening 22 to be communicated with a device which needs to be cooled and is positioned outside the system, and ice blocks are arranged in the first cold storage tank 20. Above-mentioned operation refrigerated water system can provide the refrigerated water source for the outside needs cold equipment of system through the inside cold storage tank that is provided with the ice-cube to improve cooling efficiency.
In specific implementation, the ice cold storage mode is that the cold loss is small (2% -3%) relative to the water cold storage, the ice is phase change cold storage, and the volume of the cold storage tank is small and the occupied area is small relative to the water cold storage.
In addition, when the system is in the working condition of losing power outside the plant, the cold storage tank can provide a chilled water source for equipment needing to operate under the working condition within a certain time.
Optionally, the system further comprises a second pipe and a first water chilling unit 30;
the first heat-storage tank 20 is further provided with a third opening 23 and a fourth opening 24, a first end of the second pipeline is communicated with a first output end of the first water chilling unit 30, and a second end of the second pipeline sequentially passes through the third opening 23 and the fourth opening 24 and is communicated with a first input end of the first water chilling unit 30;
and cooling liquid is arranged in the second pipeline.
In this embodiment, the first water chilling unit 30 stores cold for the first cold storage tank 20 whose cold release is completed through the second pipeline, so as to wait for the next cold release of the first cold storage tank 20.
Optionally, the cooling liquid is ethylene glycol. By providing a cooling liquid in the second conduit, for example: ethylene glycol, liquid nitrogen, sodium chloride solution, and the like. Taking the cooling liquid as ethylene glycol as an example, the freezing point is-11.5 ℃. Through set up ethylene glycol in the second pipeline, the ice in the cold storage jar is constantly to passing through the first pipeline in the cold storage jar after the release cold, and the second pipeline supplies cold for the ice-cube to make the ice-cube sustainable for first pipeline supplies cold, thereby improves cooling efficiency.
Optionally, the system further comprises a third pipeline and a fourth pipeline;
the first end of the third pipeline is communicated with the third end of the first pipeline, and the second end of the third pipeline is communicated with the second input end of the first water chilling unit 30;
the first end of the fourth pipeline is communicated with the second output end of the first water chilling unit 30, and the second end of the fourth pipeline is communicated with a cold-requiring device.
Wherein, the first water chilling unit 30 can also directly supply cold for the cold-demand equipment.
Optionally, the system further comprises a fifth conduit and a second heat-storage tank 40;
a fifth opening 41 and a sixth opening 42 are arranged on the second cold storage tank 40, a first end of the fifth pipeline is communicated with a fifth end of the first pipeline, and a second end of the fifth pipeline is communicated with the equipment needing cooling through the fifth opening 41 and the sixth opening 42;
the fourth end of the first conduit is located between the first end of the first conduit and the third end of the first conduit.
Wherein the second heat-storage tank 40 is also provided with ice cubes, and the second heat-storage tank 40 can also supply cold for the fifth pipe passing through the second heat-storage tank 40 to provide a source of chilled water for the cold-requiring equipment.
In specific implementation, by providing the second heat-storage tank 40, the first heat-storage tank 20 and the second heat-storage tank 40 can be used as a backup for each other when the system is in normal operation. When the working condition of external power is lost, the cold storage tank can also be used as a continuous uninterrupted chilled water cold source, wherein only the cold release water pump loads the emergency diesel engine power supply, so that the corresponding emergency diesel engine load can be greatly reduced.
In addition, when the system normally operates, the cold storage tank can adjust the cold release flow according to the load at the tail end so as to adjust the total water supply amount of the chilled water and ensure that the electric refrigeration water chilling unit always operates in a high energy efficiency ratio range, thereby improving the operating efficiency and the economical efficiency of the system.
Optionally, the system further comprises a sixth pipeline and a second water chiller 50;
the second heat-storage tank 40 is further provided with a seventh opening 43 and an eighth opening 44, a first end of the sixth pipeline is communicated with a first output end of the second water chilling unit 50, and a second end of the sixth pipeline sequentially penetrates through the seventh opening 43 and the eighth opening 44 and is communicated with a first input end of the second water chilling unit 50;
and cooling liquid is arranged in the sixth pipeline.
In this embodiment, the second water chilling unit 50 may store cold for the second cold storage tank 40 whose cold release is completed through the sixth pipeline, to wait for the second cold storage tank 40 to perform the next cold release.
Optionally, the system further comprises a seventh pipeline and an eighth pipeline;
a first end of the seventh pipeline is communicated with a fifth end of the first pipeline, and a second end of the seventh pipeline is communicated with a second input end of the second water chilling unit 50;
a first end of the eighth pipeline is communicated with a second output end of the second water chilling unit 50, and a second end of the eighth pipeline is communicated with the cold-requiring equipment;
the fifth end of the first conduit is located between the first end of the first conduit and the fourth end of the first conduit.
The second water chiller 50 and the first water chiller 30 may be standby for each other. Similarly, the second chiller 50 may also directly supply cooling to the cooling demand equipment.
Optionally, the system further includes a ninth pipe, a first end of the ninth pipe is communicated with an output end of the cooling demand equipment, and a second end of the ninth pipe is communicated with a sixth end of the first pipe;
the sixth end of the first conduit is located between the fifth end of the first conduit and the first end of the first conduit.
In this embodiment, by providing the ninth pipeline, the water from the output end of the cooling demand equipment enters the first pipeline again along the ninth pipeline for the next circulation.
Optionally, a valve is disposed on each of the first pipeline, the second pipeline and the ninth pipeline, and is used for communicating or cutting off the pipeline where the valve is located.
In specific implementation, valves are disposed on the first to ninth pipelines, taking the first valve disposed on the first pipeline as an example, by disposing the first valve on the first pipeline, and the first valve is located between the water tank 10 and the cold storage tank, when the first valve is closed, the first cold storage tank 20 stops releasing cold to the first pipeline, at this time, the first water chilling unit 30 and/or the second water chilling unit 50 may provide chilled water source for the equipment to be chilled, and/or the second cold storage tank 40 supplies cold to the fifth pipeline, so that the water in the fifth pipeline is chilled, so as to meet the chilled water required by the equipment to be chilled.
In another alternative embodiment, taking the second valve disposed on the second pipeline as an example, by disposing the second valve on the second pipeline, and the second valve is located between the output end of the first water chilling unit 30 and the first cold storage tank 20, when the second valve is closed, the first water chilling unit 30 stops cooling the ice in the first cold storage tank 20, and in order to ensure the normal operation of the system, at this time, the second water chilling unit 50 can cool the ice in the first cold storage tank 20, so that the ice in the first cold storage tank 20 can continuously cool the first pipeline, so as to provide the chilled water source for the cold demand equipment.
In summary, the stability of the system can be improved by controlling the valves on the different pipelines so that the first heat-storage tank 20, the first water chilling unit 30, the second heat-storage tank 40 and the second water chilling unit 50 can be used together or as backup for each other to provide the required chilled water source for the cold-requiring equipment.
Optionally, the water tank 10 is an expansion tank 10.
The expansion tank 10 is generally made of a steel plate, and is generally circular or rectangular. Because the expansion tank 10 accommodates the water expansion amount of the system, the water pressure fluctuation of the system caused by the expansion of water can be reduced, and the safety and the reliability of the operation of the system are improved. In addition, the expansion tank 10 can also stabilize the pressure of the system and remove air released by water during heating.
In specific implementation, as the operation time of the chilled water system increases, the amount of cooling water in the circulation pipeline of the chilled water system is further lost, and the expansion tank 10 can automatically replenish the first pipeline. In addition, because the water capacity of the system is large, the calculated volume is small and the occupied area is small relative to a diaphragm type constant pressure tank through constant pressure of the high-level expansion water tank 10, and the constant pressure water replenishing effect is stable.
While the present embodiments have been described with reference to the accompanying drawings, the present embodiments are not limited to the above-described embodiments, which are merely illustrative and not restrictive, and it will be apparent to those of ordinary skill in the art that many more modifications and variations can be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. An operating chilled water system, comprising: the system comprises a water tank, a first pipeline and a first cold storage tank;
the first cold storage tank is provided with a first opening and a second opening, the first end of the first pipeline is communicated with the outlet of the water tank, and the second end of the first pipeline sequentially penetrates through the first opening and the second opening to be communicated with cold-requiring equipment outside the system;
and ice blocks are arranged in the first cold storage tank.
2. The operating chilled water system of claim 1, further comprising a second pipeline and a first chiller;
the first heat-storage tank is also provided with a third opening and a fourth opening, the first end of the second pipeline is communicated with the first output end of the first water chilling unit, and the second end of the second pipeline sequentially penetrates through the third opening and the fourth opening and is communicated with the first input end of the first water chilling unit;
and cooling liquid is arranged in the second pipeline.
3. The operating chilled water system of claim 2, further comprising a third pipeline and a fourth pipeline;
the first end of the third pipeline is communicated with the third end of the first pipeline, and the second end of the third pipeline is communicated with the second input end of the water chilling unit;
and the first end of the fourth pipeline is communicated with the second output end of the first water chilling unit, and the second end of the fourth pipeline is communicated with a cold-requiring device.
4. The operating chilled water system of claim 3, further comprising a fifth pipeline and a second heat storage tank;
a fifth opening and a sixth opening are formed in the second cold storage tank, a first end of the fifth pipeline is communicated with a fifth end of the first pipeline, and a second end of the fifth pipeline is communicated with the equipment needing cooling through the fifth opening and the sixth opening;
the fourth end of the first conduit is located between the first end of the first conduit and the third end of the first conduit.
5. The operating chilled water system of claim 4, further comprising a sixth pipeline and a second chiller;
a seventh opening and an eighth opening are further formed in the second cold storage tank, a first end of a sixth pipeline is communicated with a first output end of the second water chilling unit, and a second end of the sixth pipeline sequentially penetrates through the seventh opening and the eighth opening and is communicated with a first input end of the second water chilling unit;
and cooling liquid is arranged in the sixth pipeline.
6. The running chilled water system of claim 5, further comprising a seventh pipe and an eighth pipe;
the first end of the seventh pipeline is communicated with the fifth end of the first pipeline, and the second end of the seventh pipeline is communicated with the second input end of the second water chilling unit;
the first end of the eighth pipeline is communicated with the second output end of the second water chilling unit, and the second end of the eighth pipeline is communicated with the cold-requiring equipment;
the fifth end of the first conduit is located between the first end of the first conduit and the fourth end of the first conduit.
7. The running chilled water system of claim 1, further comprising a ninth conduit, a first end of the ninth conduit being in communication with an output of a chiller, a second end of the ninth conduit being in communication with a sixth end of the first conduit;
the sixth end of the first conduit is located between the fifth end of the first conduit and the first end of the first conduit.
8. An operating chilled water system according to claim 5, wherein the coolant is ethylene glycol.
9. An operating chilled water system according to claim 1, wherein the tank is an expansion tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220619362.9U CN217520112U (en) | 2022-03-21 | 2022-03-21 | Running chilled water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220619362.9U CN217520112U (en) | 2022-03-21 | 2022-03-21 | Running chilled water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217520112U true CN217520112U (en) | 2022-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220619362.9U Active CN217520112U (en) | 2022-03-21 | 2022-03-21 | Running chilled water system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217520112U (en) |
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2022
- 2022-03-21 CN CN202220619362.9U patent/CN217520112U/en active Active
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