CN215373661U - Cold water system and spent fuel aftertreatment system suitable for cold area - Google Patents
Cold water system and spent fuel aftertreatment system suitable for cold area Download PDFInfo
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Abstract
The utility model provides a cold water system and a spent fuel post-treatment system suitable for cold regions, wherein the cold water system comprises a heat exchanger and a first cooling tower; the heat exchanger is connected with the process equipment cooling system and used for cooling the chilled water return liquid input by the process equipment cooling system when the ambient temperature is lower than a set value, the formed chilled water supply liquid is returned to the process equipment cooling system, the first cooling tower is connected with the heat exchanger and used for inputting glycol solution supply liquid into the heat exchanger so as to take away heat emitted by cooling of the chilled water return liquid, and the formed glycol solution return liquid enters the first cooling tower and forms glycol solution supply liquid after heat exchange with air. The cooling tower provides environmental water in cold regions, and the environmental water exchanges heat with chilled water heated by a process equipment cooling system after heat exchange in the heat exchanger so as to meet the cooling requirement of the process equipment, thereby avoiding the problem of running stability easily caused by cooling the chilled water by a water chilling unit in the cold regions or seasons.
Description
Technical Field
The utility model particularly relates to a cold water system and a spent fuel post-treatment system suitable for cold regions.
Background
In the post-treatment production process of the spent fuel, the low-temperature circulating cooling liquid of the process primary loop needs to exchange heat with chilled water in a heat exchanger and then returns to a process point for use. This requires chilled water to be provided throughout the year to meet the process cooling needs. The cold water systems commonly used at present include air cooling (patent No. 200820004671.5) and water cooling (application No.:
201120203547.3), as the name suggests, the air-cooled chiller is to adopt the air cooling refrigerant under the ambient temperature, and the water-cooled chiller needs to increase the cooling tower to provide the coolant liquid to cool the refrigerant, no matter air-cooled or water-cooled, will all face because of the low ambient temperature in winter leads to the compressor high low differential pressure undersize, and then leads to the refrigerant to supply liquid not enough, the unable loading scheduling problem of compressor. In order to ensure the realization of year-round cooling, an oil pump auxiliary oil supply scheme is often adopted at present to establish enough pressure difference to ensure the operation stability of the compressor. However, the oil pump is also a moving part, and the stability of the water chilling unit is directly influenced by the operation reliability of the oil pump, so that the auxiliary oil supply scheme of the oil pump is difficult to popularize.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a cold water system suitable for cold regions for providing stable chilled water for process equipment in cold regions aiming at the defects in the prior art, and correspondingly provide a spent fuel post-treatment system with the cold water system.
The technical scheme adopted for solving the technical problem of the utility model is as follows:
the utility model provides a cold water system suitable for cold regions, which comprises: a heat exchanger and a first cooling tower;
the heat exchanger is connected with the process equipment cooling system and is used for cooling the return chilled water input by the process equipment cooling system when the wet bulb temperature is lower than a first set value or the dry bulb temperature is lower than a second set value, the formed chilled water is fed back to the process equipment cooling system,
the first cooling tower is connected with the heat exchanger and used for inputting glycol solution liquid supply into the heat exchanger so as to take away heat released by cooling chilled water return liquid, and formed glycol solution return liquid enters the first cooling tower and exchanges heat with air to form glycol solution liquid supply.
Optionally, a water chilling unit and a second cooling tower are also included,
the water chilling unit is connected with the process equipment cooling system and is used for cooling the chilled water return liquid input by the process equipment cooling system when the ambient water return liquid temperature is more than or equal to a third set value or the wet bulb temperature is more than or equal to a fourth set value, the formed chilled water is supplied to feed back to the process equipment cooling system,
and the second cooling tower is also connected with the water chilling unit and used for inputting environmental water to supply liquid to the water chilling unit so as to take away heat released by cooling of return chilled water, and the formed return environmental water enters the second cooling tower and exchanges heat with air to form environmental water supply liquid.
Optionally, the second cooling tower is further connected to the process equipment cooling system, and is configured to receive the returned chilled water from the process equipment cooling system and perform heat exchange with air when the returned ambient water temperature is lower than the third set value and the wet bulb temperature is lower than the fourth set value, so that the formed chilled water is fed back to the process equipment cooling system.
Optionally, the system also comprises a first pump, wherein the first pump is arranged on a pipeline connected with the heat exchanger and the first cooling tower, is arranged on a pipeline connected with the second cooling tower and the cooling system of the process equipment, and is also arranged on a pipeline connected with the second cooling tower and the water chilling unit,
for circulating the glycol solution between the heat exchanger and the first cooling tower, or circulating chilled water between the second cooling tower and the process equipment cooling system, or circulating ambient water between the second cooling tower and a water chiller.
Optionally, the system also comprises a second pump which is arranged on a pipeline connecting the process equipment cooling system and the water chilling unit and is also arranged on a pipeline connecting the process equipment cooling system and the heat exchanger,
for circulating chilled water between the process equipment cooling system and the chiller, or between the process equipment cooling system and the heat exchanger.
Optionally, the first cooling tower is provided with a first water inlet pipe and a first water outlet pipe,
the second cooling tower is provided with a second water inlet pipe and a second water outlet pipe,
the cooling system of the process equipment is provided with a third water inlet pipe and a third water outlet pipe,
the first water inlet pipe is connected with the heat exchanger, the first water outlet pipe is connected with the first pump, a first valve is arranged on a pipeline connecting the first water outlet pipe and the first pump,
the second water inlet pipe is connected with the water chilling unit, the second water outlet pipe is connected with the first pump, a second valve is arranged on a pipeline connecting the second water outlet pipe with the first pump,
the first pump is connected with the heat exchanger, a third valve is arranged on a pipeline connected with the heat exchanger, the first pump is also connected with the water chilling unit through a connecting pipe, and a fourth valve is arranged on the connecting pipe;
the third water inlet pipe is respectively communicated with the connecting pipe, the water chilling unit and the heat exchanger, a fifth valve is arranged on a pipeline of the third water inlet pipe communicated with the connecting pipe, the third water outlet pipe is respectively communicated with the second pump and the second water inlet pipe, and a sixth valve is arranged on a pipeline of the third water outlet pipe communicated with the second water inlet pipe; the second pump is respectively connected with the water chilling unit and the heat exchanger, and a seventh valve is arranged on a pipeline connecting the second pump and the heat exchanger.
Optionally, the first water inlet pipe and the first water outlet pipe are connected through a first regulating valve, and the second water inlet pipe and the second water outlet pipe are connected through a second regulating valve.
Optionally, the system further comprises an ethylene glycol solution supply system, wherein the ethylene glycol solution supply system is connected with the circulating pipeline between the first cooling tower and the heat exchanger and is used for inputting the ethylene glycol solution into the circulating pipeline between the first cooling tower and the heat exchanger.
Optionally, the first set value is-1 ℃ to 1 ℃, the second set value is 1 ℃ to 3 ℃, the third set value is 17 ℃ to 19 ℃, and the fourth set value is 3 ℃ to 5 ℃;
the utility model also provides a spent fuel post-treatment system which comprises process equipment and a process equipment cooling system for cooling the process equipment, and is characterized by further comprising the cold water system suitable for the cold region.
According to the utility model, the glycol solution suitable for cold regions is provided by the cooling tower, and is subjected to heat exchange with chilled water heated to about 12 ℃ after heat exchange with a cooling system of process equipment in the heat exchanger until the chilled water is cooled to about 7 ℃, so that the cooling requirement of the process equipment is met. Thereby avoiding the problem of running stability which is easy to occur when a water chilling unit is adopted to cool chilled water in cold areas or seasons.
Drawings
Fig. 1 is a schematic structural diagram of a cold water system suitable for cold regions according to embodiment 1 of the present invention.
In the figure: 1. a water chilling unit; 2. a second pump; 3. a constant pressure tank; 4. a heat exchanger; 5. a second cooling tower; 51. a second water inlet pipe; 52. a second water outlet pipe; 6. a first pump; 8. a first cooling tower; 81. a first water inlet pipe; 82. a first water outlet pipe; 9. a second regulating valve; 10. a sixth valve; 11. a fifth valve; 12. a second valve; 13. a fourth valve; 14. a third valve; 15. a first valve; 16. a seventh valve; 17. a first regulating valve; 18. a third water inlet pipe; 19. and a third water outlet pipe.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. 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 scope of the present invention.
In the description of the present invention, it should be noted that the indication of orientation or positional relationship, such as "on" or the like, is based on the orientation or positional relationship shown in the drawings, and is only for convenience and simplicity of description, and does not indicate or imply that the device or element referred to must be provided with a specific orientation, constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "disposed," "mounted," "fixed," and the like are to be construed broadly, e.g., as being fixedly or removably connected, or integrally connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
The utility model provides a cold water system suitable for cold regions, which comprises: a heat exchanger and a first cooling tower;
the heat exchanger is connected with the process equipment cooling system and is used for cooling the return chilled water input by the process equipment cooling system when the wet bulb temperature is lower than a first set value or the dry bulb temperature is lower than a second set value, the formed chilled water is fed back to the process equipment cooling system,
the first cooling tower is connected with the heat exchanger and used for inputting environmental water to supply liquid to the heat exchanger so as to take away heat released by cooling of return chilled water, formed return environmental water enters the first cooling tower and exchanges heat with air to form environmental water to supply liquid.
The utility model also provides a spent fuel post-treatment system which comprises process equipment and a process equipment cooling system for cooling the process equipment, and is characterized by further comprising the cold water system suitable for the cold region.
Example 1:
as shown in fig. 1, the present embodiment provides a cold water system suitable for cold regions, including: the heat exchanger 4 and the first cooling tower 8 are used for starting in winter or in cold regions in cold winter to cool the chilled water heated after heat exchange of the cooling system of the process equipment.
The heat exchanger 4 is connected with the process equipment cooling system and is used for cooling the return chilled water input by the process equipment cooling system when the wet bulb temperature is lower than a first set value or the dry bulb temperature is lower than a second set value, the formed chilled water is fed back to the process equipment cooling system,
the first cooling tower 8 is connected with the heat exchanger 4 and used for inputting environmental water to supply liquid to the heat exchanger 4 so as to take away heat released by cooling of chilled water return liquid, and formed environmental water return liquid enters the first cooling tower 8 and forms environmental water supply liquid after heat exchange with air.
Wherein the first set value is-1 ℃ to 1 ℃, and the second set value is 1 ℃ to 3 ℃. The glycol-doped ambient water is selected to avoid freezing of the ambient water at too low a temperature. The ethylene glycol is preferably present in an amount of 40% by mass.
Therefore, in winter in cold areas, the environment temperature is low, correspondingly, the environment water temperature is low, the glycol solution suitable for the cold areas is provided through the first cooling tower 8, and is subjected to heat exchange with chilled water heated to about 12 ℃ after heat exchange with a cooling system of process equipment in a heat exchanger until the chilled water is cooled to about 7 ℃, so that the cooling requirement of the process equipment is met. Thereby avoiding the problem of running stability which is easy to occur when a water chilling unit is adopted to cool chilled water in cold areas or seasons.
In this embodiment, the system further comprises a water chilling unit 1 and a second cooling tower 5, which are used for starting in summer to cool the chilled water heated by the process equipment cooling system after heat exchange.
The water chilling unit 1 is connected with the process equipment cooling system and is used for cooling the chilled water return liquid input by the process equipment cooling system when the ambient water return liquid temperature is more than or equal to a third set value or the wet bulb temperature is more than or equal to a fourth set value, the formed chilled water is supplied to feed back to the process equipment cooling system,
the second cooling tower 5 is also connected with the water chilling unit 1 and used for inputting environmental water to supply liquid to the water chilling unit 1 so as to take away heat released by cooling of chilled water return liquid, formed environmental water return liquid enters the second cooling tower 5, and the environmental water supply liquid is formed after the environmental water return liquid exchanges heat with air.
Wherein the third set value is 17-19 ℃ and the fourth set value is 3-5 ℃.
Therefore, in summer in cold areas, the ambient temperature is higher than a fourth set value (3 ℃ -5 ℃), the ambient water temperature is higher, the water chilling unit 1 and the second cooling tower 5 are put into operation and are refrigerated through the water chilling unit 1 to cool chilled water heated by the process equipment cooling system after heat exchange, heat emitted by chilled water cooling is taken away by ambient water provided by the second cooling tower 5, and the heated ambient water is cooled in the second cooling tower through air cooling and then enters the water chilling unit 1 for recycling.
In this embodiment, the second cooling tower 5 is further connected to the process equipment cooling system, and is configured to receive the returned chilled water from the process equipment cooling system and perform heat exchange with air when the returned ambient water temperature is lower than the third set value and the wet bulb temperature is lower than the fourth set value, so that the formed chilled water is supplied to the process equipment cooling system.
In spring and autumn of cold areas, the ambient temperature is lower than the fourth set value (3 ℃ -5 ℃), and the ambient water temperature is lower, so that the second cooling tower 5 is adopted to directly supply ambient water to cool the chilled water return liquid input by the cooling system of the process equipment.
In the embodiment, the device also comprises a first pump 6, the first pump 6 is arranged on a pipeline connected with the heat exchanger 4 and the first cooling tower 8, is arranged on a pipeline connected with the second cooling tower 5 and the process equipment cooling system, is also arranged on a pipeline connected with the second cooling tower 5 and the water chilling unit 1,
for circulating the glycol solution between the heat exchanger 4 and the first cooling tower 8, or circulating chilled water between the second cooling tower 5 and the process equipment cooling system, or circulating ambient water between the second cooling tower 5 and the water chiller 1.
In the embodiment, the system also comprises a second pump 2, the second pump 2 is arranged on a pipeline connecting the process equipment cooling system and the water chilling unit 1, and is also arranged on a pipeline connecting the process equipment cooling system and the heat exchanger 4,
for circulating chilled water between the process equipment cooling system and the chiller 1 or between the process equipment cooling system and the heat exchanger 4.
In the present embodiment, the first and second electrodes are,
the first cooling tower 8 is provided with a first water inlet pipe 81 and a first water outlet pipe 82,
the second cooling tower 5 is provided with a second water inlet pipe 51 and a second water outlet pipe 52,
the cooling system of the process equipment is provided with a third water inlet pipe 18 and a third water outlet pipe 19,
the first water inlet pipe 81 is connected with the heat exchanger 4, the first water outlet pipe 82 is connected with the first pump 6, the pipeline of the first water outlet pipe 82 connected with the first pump 6 is provided with a first valve 15,
the second water inlet pipe 51 is connected with the water chilling unit 1, the second water outlet pipe 52 is connected with the first pump 6, the pipeline of the second water outlet pipe 52 connected with the first pump 6 is provided with a second valve 12,
the first pump 6 is connected with the heat exchanger 4, a third valve 14 is arranged on a pipeline connecting the first pump 6 with the heat exchanger 4, the first pump 6 is also connected with the water chilling unit 1 through a connecting pipe, and a fourth valve 14 is arranged on the connecting pipe;
a third water inlet pipe 18 is respectively communicated with the connecting pipe, the water chilling unit 1 and the heat exchanger 4, a fifth valve 11 is arranged on a pipeline of the third water inlet pipe 18 communicated with the connecting pipe, a third water outlet pipe 19 is respectively communicated with the second pump 2 and the second water inlet pipe 51, and a sixth valve 10 is arranged on a pipeline of the third water outlet pipe 19 communicated with the second water inlet pipe 51; the second pump 2 is respectively connected with the water chilling unit 1 and the heat exchanger 4, and a seventh valve 16 is arranged on a pipeline connecting the second pump 2 and the heat exchanger 4.
Through the design, the pipeline layout in the system is reasonable, the structure is compact, and the occupied area is small.
In the present embodiment, the first and second electrodes are,
the first inlet pipe 81 and the first outlet pipe 82 are connected through the first regulating valve 17, and the second inlet pipe 51 and the second outlet pipe 52 are connected through the second regulating valve 9.
Therefore, in the process that the first cooling tower 8 and the heat exchanger 4 are put into use, when the return water temperature of the glycol solution is lower than 6 ℃, the first regulating valve 17 is opened, and when the return water temperature is higher than 8 ℃, the first regulating valve 17 is closed, so that the glycol solution temperature of the cooling refrigerating fluid is regulated.
Therefore, in the process of putting the water chilling unit 1 and the second cooling tower 5 into use, when the return temperature of the environmental water is lower than 20 ℃, the opening degree of the second regulating valve 9 between the cooling water supply and return water is increased, and when the return temperature of the environmental water is higher than 28 ℃, the opening degree of the second regulating valve 9 between the cooling water supply and return water is reduced so as to regulate the temperature of the environmental water carrying the heat released by cooling the refrigerating fluid.
In this embodiment, the system further comprises an ethylene glycol solution supply system, wherein the ethylene glycol solution supply system is connected to the circulation pipeline between the first cooling tower 8 and the heat exchanger 4, and is used for inputting the ethylene glycol solution into the circulation pipeline between the first cooling tower 8 and the heat exchanger 4.
In this embodiment, the glycol solution supply system includes a water storage tank 20, a third pump 7 and a constant pressure tank 3, and the third pump 7 is connected between the water storage tank 20 and the circulation pipeline for pumping the alcohol water in the water storage tank 20 into the circulation pipeline. The constant pressure tank 3 is connected between the third pump 7 and the above-mentioned circulation pipe, and plays a role of buffering and maintaining a constant operation pressure.
In addition, a chilled water make-up system is included, which is connected to a third outlet pipe 19 for making up chilled water to the process equipment cooling system, which also includes a constant pressure tank 3.
Therefore, the cold water supply system can realize year-round operation and cold supply in cold areas, and ensures safe, stable and economic operation of the cold water system. The system is divided into three operating conditions according to seasons, wherein the cold water is provided by the water chilling unit 1 in summer, the cold water is directly provided by the second cooling tower 5 in transition seasons, and the first cooling tower 8 uses glycol solution to prepare the cold water through the plate heat exchanger 4 in winter. Each type of working condition can meet the cooling requirement of the process.
The cold water system of the utility model provides cold water with supply/return water temperature of 7/12 ℃ for the process equipment. The system operates all year round. The system functions are classified into three types of operation conditions according to seasons:
the summer cooling tower (a second cooling tower 5), the water chilling unit 1, the first pump 6 and the second pump 2 are put into operation; the second regulating valve 9, the second valve 12 and the fourth valve 13 are opened, and the first regulating valve 17, the fifth valve 11, the sixth valve 10, the third valve 14, the first valve 15 and the seventh valve 16 are closed, so that the cold water system is switched to the circulating system consisting of the second cooling tower 5 and the cold water unit 1. When the return water temperature of the cooling water (environmental water) is lower than 20 ℃, the opening degree of the second regulating valve 9 between the supply water and the return water of the cooling water is increased, and when the return water temperature of the cooling water is higher than 28 ℃, the opening degree of the second regulating valve 9 between the supply water and the return water of the cooling water is reduced.
When the return water temperature of the cooling water is continuously lower than 18 ℃ (calculated according to the performance of the water chilling unit), and the wet bulb temperature of the outdoor air is lower than 4 ℃, the water chilling unit 1 and the second pump 2 stop running, the fifth valve 11 and the sixth valve 10 are opened, and the second cooling tower 5 directly supplies cold.
When the wet bulb temperature is less than 0 ℃ or the dry bulb temperature is less than 2 ℃, the cooling tower (the second cooling tower 5) for summer stops running, and the ambient water in the cold water system is drained. The second regulating valve 9, the fifth valve 11, the sixth valve 10, the second valve 12 and the fourth valve 13 are closed while the cooling tower for winter (the first cooling tower 8), the plate heat exchanger 4, the first regulating valve 17, the third valve 14, the first valve 15 and the seventh valve 16 are opened, at which time the cold water system is switched to the circulation system consisting of the first cooling tower 8 and the heat exchanger 4. The supply system for the environmental water (glycol added antifreeze) is operated, the environmental water added with glycol is pumped into a circulating system consisting of the first cooling tower 8 and the heat exchanger 4, and the cooling circulation is started. When the return water temperature of the glycol solution in the first cooling tower 8 is lower than 6 ℃, the first regulating valve 17 is opened, and when the return water temperature is higher than 8 ℃, the first regulating valve 17 is closed.
The equipment starting sequence of the whole system is as follows: opening a cooling water pump of a cooling tower → opening the cooling tower → opening a refrigerating unit refrigerating water pump → opening the refrigerating unit. The order is reversed when closing. When the refrigerating unit is closed, the valves in front of and behind the refrigerating unit are closed in a linkage manner.
Cold water system equipment
1) Water-cooling water chilling unit
The compressor adopts a screw type or a vortex type, a single unit has 25 to 100 percent capacity adjustment under normal conditions, and the unit can be ensured to stably run under the minimum load;
2) cooling tower
The cold water system runs all the year round, and the outdoor equipment can ensure the normal running of the system and does not freeze under the working condition of producing 7-12 ℃ chilled water in winter; the cooling tower should be resistant to corrosion by glycol solutions.
3) Plate heat exchanger
The material of the plate heat exchanger in contact with the fluid should be resistant to erosion and corrosion.
The whole cold water system is uniformly controlled by the control box. The automatic (and manual) switching of the running modes in winter, summer and transition seasons can be realized. The switching mode is realized by a switch of an electromagnetic valve. An electric regulating valve controlled by a temperature sensing device is arranged on the chilled water system, so that the supply and return water temperature of the chilled water is ensured to be 7-12 ℃ under different flow working conditions.
The whole cold water system is provided with a complete local control device and has compatibility with other controls, so that the main parameters, the running state and the fault signals of the unit can be displayed in a control room.
Example 2:
the embodiment provides a spent fuel post-treatment system, which comprises process equipment, a process equipment cooling system for cooling the process equipment, and the cold water system suitable for the cold region of the embodiment 1.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the utility model, and these modifications and improvements are also considered to be within the scope of the utility model.
Claims (10)
1. A chilled water system for use in cold regions, comprising: a heat exchanger (4) and a first cooling tower (8);
the heat exchanger (4) is connected with a cooling system of the process equipment and is used for cooling the return chilled water input by the cooling system of the process equipment when the wet bulb temperature is lower than a first set value or the dry bulb temperature is lower than a second set value, the formed chilled water is supplied to the return chilled water to be fed back to the cooling system of the process equipment,
the first cooling tower (8) is connected with the heat exchanger (4) and used for inputting glycol solution liquid supply into the heat exchanger (4) so as to take away heat released by cooling chilled water return liquid, formed glycol solution return liquid enters the first cooling tower (8), and the glycol solution liquid supply is formed after the glycol solution return liquid exchanges heat with air.
2. The cold water system suitable for cold districts according to claim 1, further comprising a water chilling unit (1) and a second cooling tower (5),
the water chilling unit (1) is connected with the process equipment cooling system and is used for cooling the chilled water return liquid input by the process equipment cooling system when the ambient water return liquid temperature is more than or equal to a third set value or the wet bulb temperature is more than or equal to a fourth set value, the formed chilled water is supplied to feed back to the process equipment cooling system,
the second cooling tower (5) is also connected with the water chilling unit (1) and used for inputting environmental water into the water chilling unit (1) for supplying liquid so as to take away heat released by cooling of return chilled water, formed return environmental water enters the second cooling tower (5) and forms environmental water liquid supply after heat exchange with air.
3. The cold water system suitable for cold districts according to claim 2, wherein the second cooling tower (5) is further connected to the process equipment cooling system for receiving the returned chilled water from the process equipment cooling system and exchanging heat with air to form chilled water to be fed back to the process equipment cooling system when the return temperature of the ambient water is lower than the third set point and the wet bulb temperature is lower than the fourth set point.
4. A cold water system suitable for cold districts according to claim 3, further comprising a first pump (6), wherein the first pump (6) is provided on a pipeline connecting the heat exchanger (4) and the first cooling tower (8), and on a pipeline connecting the second cooling tower (5) and the process equipment cooling system, and on a pipeline connecting the second cooling tower (5) and the cold water unit (1),
the system is used for circulating the glycol solution between the heat exchanger (4) and the first cooling tower (8), or circulating chilled water between the second cooling tower (5) and a cooling system of process equipment, or circulating ambient water between the second cooling tower (5) and a water chilling unit (1).
5. The cold water system suitable for cold districts according to claim 4, further comprising a second pump (2), wherein the second pump (2) is provided on a pipeline connecting the process equipment cooling system and the water chilling unit (1) and is further provided on a pipeline connecting the process equipment cooling system and the heat exchanger (4),
for circulating chilled water between the process equipment cooling system and the water chilling unit (1), or between the process equipment cooling system and the heat exchanger (4).
6. The cold water system suitable for cold districts according to claim 5,
the first cooling tower (8) is provided with a first water inlet pipe (81) and a first water outlet pipe (82),
the second cooling tower (5) is provided with a second water inlet pipe (51) and a second water outlet pipe (52),
the cooling system of the process equipment is provided with a third water inlet pipe (18) and a third water outlet pipe (19),
the first water inlet pipe (81) is connected with the heat exchanger (4), the first water outlet pipe (82) is connected with the first pump (6), a first valve (15) is arranged on a pipeline connecting the first water outlet pipe (82) and the first pump (6),
a second water inlet pipe (51) is connected with the water chilling unit (1), a second water outlet pipe (52) is connected with the first pump (6), a second valve (12) is arranged on a pipeline connecting the second water outlet pipe (52) with the first pump (6),
the first pump (6) is connected with the heat exchanger (4), a third valve (14) is arranged on a pipeline connecting the first pump (6) with the heat exchanger (4), the first pump (6) is also connected with the water chilling unit (1) through a connecting pipe, and a fourth valve (13) is arranged on the connecting pipe;
the third water inlet pipe (18) is respectively communicated with the connecting pipe, the water chilling unit (1) and the heat exchanger (4), a fifth valve (11) is arranged on a pipeline of the third water inlet pipe (18) communicated with the connecting pipe, the third water outlet pipe (19) is respectively communicated with the second pump (2) and the second water inlet pipe (51), and a sixth valve (10) is arranged on a pipeline of the third water outlet pipe (19) communicated with the second water inlet pipe (51); the second pump (2) is respectively connected with the water chilling unit (1) and the heat exchanger (4), and a seventh valve (16) is arranged on a pipeline connecting the second pump (2) and the heat exchanger (4).
7. The cold water system suitable for cold districts according to claim 6,
the first water inlet pipe (81) is connected with the first water outlet pipe (82) through the first regulating valve (17), and the second water inlet pipe (51) is connected with the second water outlet pipe (52) through the second regulating valve (9).
8. The cold water system suitable for cold districts according to any one of claims 1 to 7, further comprising a glycol solution supply system connected to the circulation pipe between the first cooling tower (8) and the heat exchanger (4) for feeding glycol solution into the circulation pipe between the first cooling tower (8) and the heat exchanger (4).
9. The cold water system suitable for cold districts according to any one of claims 2 to 7,
the first set value is-1 deg.C, the second set value is 1 deg.C-3 deg.C, the third set value is 17 deg.C-19 deg.C, and the fourth set value is 3 deg.C-5 deg.C.
10. A spent fuel reprocessing system comprising process equipment and a process equipment cooling system for cooling the process equipment, further comprising a cold water system suitable for use in cold regions according to any one of claims 1 to 9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114838539A (en) * | 2022-04-27 | 2022-08-02 | 中电诚达医药工程设计(河北)有限公司 | Circulating refrigerating fluid switching and supplying device for severe cold area and using method |
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2021
- 2021-06-29 CN CN202121461388.7U patent/CN215373661U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114838539A (en) * | 2022-04-27 | 2022-08-02 | 中电诚达医药工程设计(河北)有限公司 | Circulating refrigerating fluid switching and supplying device for severe cold area and using method |
| CN114838539B (en) * | 2022-04-27 | 2023-10-10 | 中电诚达医药工程设计(河北)有限公司 | Circulating refrigerating fluid switching and supplying device for severe cold region and using method |
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