CN110542270A - Special cooling unit of PCW system - Google Patents
Special cooling unit of PCW system Download PDFInfo
- Publication number
- CN110542270A CN110542270A CN201910721039.5A CN201910721039A CN110542270A CN 110542270 A CN110542270 A CN 110542270A CN 201910721039 A CN201910721039 A CN 201910721039A CN 110542270 A CN110542270 A CN 110542270A
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- Prior art keywords
- water
- return pipe
- side water
- primary
- supply pipe
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/001—Arrangement or mounting of control or safety devices for cryogenic fluid systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention belongs to the technical field of cooling units, and particularly relates to a special cooling unit for a PCW (prestressed concrete) system, which comprises a primary pipeline system, a secondary pipeline system, a heat exchanger unit, a water pump unit, a water treatment mixed bed, a control cabinet and a water supplementing mechanism, wherein the primary pipeline system and the secondary pipeline system are in heat exchange connection through the heat exchanger unit, and the water pump unit, the water treatment mixed bed and the water supplementing mechanism are all arranged on and communicated with the secondary pipeline system. The resistivity of the RO water in the secondary side water return pipe is detected through the resistivity sensor, when the resistivity of the RO water is higher than a standard value, the RO water in the secondary side water supply pipe enters the water treatment mixed bed for ultraviolet sterilization and permeation by opening the electromagnetic valve, then enters the secondary side water return pipe again until the resistivity sensor detects that the resistivity of the RO water in the secondary side water return pipe is in a normal value, then the electromagnetic valve is closed, and the whole process needs to work in cooperation with a PLC (programmable logic controller) in a control cabinet.
Description
Technical Field
The invention relates to the technical field of cooling units, in particular to a special cooling unit for a PCW system.
Background
process cooling water systems (PCW), also known as process cooling water systems. The cooling system is mainly applied to cooling process equipment, and is simply a cooling system of the process equipment.
In the current PCW system, a plurality of devices which need constant temperature have very high requirements on water quality, so most of the devices adopt RO water to cool process devices, but after the RO water works for a long time in the PCW system, the resistivity of the RO water can be changed due to various reasons, and the service life of the process devices can be influenced no matter the resistivity of the RO water is higher or lower than a standard value, so that a special cooling unit which can solve the problem that the process devices are influenced due to the change of the resistivity of the RO water in the existing PCW system is provided, the special cooling unit has the advantages of keeping the resistivity of the RO water at the standard value, and ensuring the working stability of the process devices.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a special cooling unit for a PCW system, which solves the problems in the background technology.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a special cooling unit of PCW system, includes that primary pipe-line system, secondary pipe-line system, heat exchanger unit, water pump set, water treatment mix bed, switch board and moisturizing mechanism, primary pipe-line system and secondary pipe-line system pass through the heat exchanger unit heat transfer and connect, water pump set, water treatment mix bed and moisturizing mechanism all set up on secondary pipe-line system and be linked together rather than, primary pipe-line system, secondary pipe-line system, heat exchanger unit, water pump set, water treatment mix the PLC controller of bed and moisturizing mechanism in all cooperating the switch board and carry out work.
The primary pipeline system is composed of a primary side water supply pipe and a primary side water return pipe, a pressure sensor A and a direct-reading thermometer A are mounted on the primary side water supply pipe and the primary side water return pipe, and a Y-type filter and an electric regulating valve are mounted on the primary side water supply pipe.
The secondary pipeline system comprises a secondary side water supply pipe and a secondary side water return pipe, wherein pressure sensors B are installed on the secondary side water supply pipe and the secondary side water return pipe, a temperature sensor, a flowmeter and an electromagnetic valve are installed on the secondary side water supply pipe, and a direct-reading thermometer B and a resistivity sensor are installed on the secondary side water return pipe.
The water pump unit comprises a circulating pump and a diesel engine emergency pump, and direct-reading pressure gauges are mounted on water inlet pipes and water outlet pipes of the circulating pump and the diesel engine emergency pump.
The water supplementing mechanism comprises a nitrogen-sealed water tank, and a liquid level sensor is installed on the nitrogen-sealed water tank.
As a preferred technical scheme of the invention, the heat exchanger unit consists of two plate heat exchangers.
As a preferred technical solution of the present invention, one end of the primary side water supply pipe is communicated with the primary network input ends of the two plate heat exchangers, one end of the primary side water return pipe is communicated with the primary network output ends of the two plate heat exchangers, one end of the secondary side water supply pipe is communicated with the secondary network water supply ends of the two plate heat exchangers, and one end of the secondary side water return pipe is communicated with the secondary network water return ends of the two plate heat exchangers.
As a preferred embodiment of the present invention, butterfly valves are installed on the primary-side water supply pipe, the primary-side water return pipe, the secondary-side water supply pipe, and the secondary-side water return pipe, and ball valves are installed on the primary-side water return pipe, the secondary-side water supply pipe, and the secondary-side water return pipe.
As a preferred technical scheme of the invention, the circulating pump and the diesel engine emergency pump are communicated with the secondary side return water pipe through a water inlet pipe and a water outlet pipe.
As a preferred technical scheme of the invention, butterfly valves are respectively arranged on the water inlet pipe and the water outlet pipe of the circulating pump and the diesel engine emergency pump, and check valves are respectively arranged on the water outlet pipes of the circulating pump and the diesel engine emergency pump.
As a preferable technical scheme of the invention, the water inlet end of the water treatment mixed bed is communicated with a pipeline of a secondary side water supply pipe provided with a flow meter and an electromagnetic valve, and the water outlet end of the water treatment mixed bed is communicated with a secondary side water return pipe.
As a preferred technical scheme of the invention, the nitrogen-sealed water tank is communicated with the secondary side water return pipe through a pipeline, and a butterfly valve is arranged on the pipeline.
As a preferred technical scheme of the invention, the pressure sensor A, the pressure sensor B, the temperature sensor, the flowmeter, the electromagnetic valve, the resistivity sensor, the circulating pump, the diesel emergency pump, the water treatment mixed bed and the liquid level sensor all work in cooperation with a PLC (programmable logic controller) in a control cabinet.
As a preferred technical scheme of the invention, the control cabinet is internally provided with electric elements such as a frequency converter, a remote transmission interface, an exhaust fan, a touch screen and the like.
(III) advantageous effects
Compared with the prior art, the invention provides a special cooling unit for a PCW system, which has the following beneficial effects:
1. This special cooling unit of PCW system, the resistivity of RO water in the secondary side return pipe is detected through resistivity sensor, when the resistivity of RO water is higher than the standard value, through opening the solenoid valve, the RO water in the secondary side water supply pipe enters into the water treatment and mixes the bed and carry out ultraviolet sterilization and infiltration this moment, then enter into the secondary side return pipe once more, until resistivity sensor detects the resistivity of RO water in the secondary side return pipe and is in the normal value, then close the solenoid valve, whole process need cooperate the work of the PLC controller in the switch board, when the resistivity of RO water is less than the standard value, through nitrogen-sealed water tank toward secondary side return pipe in add RO water can, thereby can keep the resistivity of RO water in the normal value, the job stabilization nature of technological equipment has been guaranteed.
2. This special cooling unit of PCW system, owing to adopt nitrogen gas seal water tank, can protect quality of water through nitrogen gas, avoid quality of water to change.
3. This special cooling unit of PCW system through the design that increases the diesel engine emergency pump, when meeting emergency and taking place the outage, the diesel engine emergency pump can automatic input work, makes RO water continue the circulation, plays the guard action to the process units that need the refrigerated.
4. the cooling unit special for the PCW system monitors the temperature of RO water through a temperature sensor on a secondary side water supply pipe, opens an electric adjusting valve on a primary side water supply pipe when the temperature is higher than a set value, and closes the electric adjusting valve on the primary side water supply pipe when the temperature is lower than the set value.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: 1. a primary piping system; 101. a primary-side water supply pipe; 102. a primary side water return pipe; 103. a pressure sensor A; 104. a direct-reading thermometer A; 105. a Y-type filter; 106. an electric control valve; 2. a secondary piping system; 201. a secondary side water supply pipe; 202. a secondary side water return pipe; 203. a pressure sensor B; 204. a temperature sensor; 205. a flow meter; 206. an electromagnetic valve; 207. a direct-reading thermometer B; 208. a resistivity sensor; 3. a heat exchanger unit; 4. a water pump unit; 401. a circulation pump; 402. a diesel emergency pump; 403. a direct-reading pressure gauge; 5. water treatment mixed bed; 6. a control cabinet; 7. a water replenishing mechanism; 701. a nitrogen-sealed water tank; 702. a liquid level sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
Examples
referring to fig. 1, the present invention provides the following technical solutions: the utility model provides a special cooling unit of PCW system, including primary pipe-line system 1, secondary pipe-line system 2, heat exchanger unit 3, water pump unit 4, water treatment mixes bed 5, switch board 6 and moisturizing mechanism 7, primary pipe-line system 1 and secondary pipe-line system 2 are connected through 3 heat exchanges of heat exchanger unit, water pump unit 4, water treatment mixes bed 5 and moisturizing mechanism 7 and all sets up on secondary pipe-line system 2 and is linked together with it, primary pipe-line system 1, secondary pipe-line system 2, heat exchanger unit 3, water pump unit 4, water treatment mixes the PLC controller in bed 5 and the moisturizing mechanism 7 all coordinates switch board 6 and carries out work.
The primary pipe system 1 is composed of a primary-side water supply pipe 101 and a primary-side water return pipe 102, a pressure sensor a103 and a direct-reading thermometer a104 are mounted on both the primary-side water supply pipe 101 and the primary-side water return pipe 102, and a Y-type filter 105 and an electric control valve 106 are mounted on the primary-side water supply pipe 101.
The secondary pipeline system 2 comprises a secondary water supply pipe 201 and a secondary water return pipe 202, wherein pressure sensors B203 are mounted on the secondary water supply pipe 201 and the secondary water return pipe 202, a temperature sensor 204, a flow meter 205 and an electromagnetic valve 206 are mounted on the secondary water supply pipe 201, and a direct-reading thermometer B207 and a resistivity sensor 208 are mounted on the secondary water return pipe 202.
the water pump unit 4 comprises a circulating pump 401 and a diesel emergency pump 402, and direct-reading pressure gauges 403 are respectively arranged on water inlet pipes and water outlet pipes of the circulating pump 401 and the diesel emergency pump 402.
The water replenishing mechanism 7 comprises a nitrogen-sealed water tank 701, and a liquid level sensor 702 is mounted on the nitrogen-sealed water tank 701.
In the embodiment, the resistivity of the RO water in the secondary-side water return pipe 202 is detected by the resistivity sensor 208, when the resistivity of the RO water is higher than a standard value, the RO water in the secondary-side water supply pipe 201 enters the water treatment mixed bed 5 for ultraviolet sterilization and permeation by opening the electromagnetic valve 206, and then enters the secondary-side water return pipe 202 again until the resistivity sensor 208 detects that the resistivity of the RO water in the secondary-side water return pipe 202 is at a normal value, and then the electromagnetic valve 206 is closed, so that the whole process needs to work in cooperation with a PLC (programmable logic controller) in the control cabinet 6, and when the resistivity of the RO water is lower than the standard value, the RO water is added into the secondary-side water return pipe 202 through the nitrogen-sealed water tank 701, so that the resistivity of the RO water can be kept at the normal value, and the working stability of process; because the nitrogen-sealed water tank 701 is adopted, the water quality can be protected through nitrogen, and the water quality is prevented from changing; by adding the design of the diesel emergency pump 402, when power failure occurs in an emergency, the diesel emergency pump 402 can automatically work to enable the RO water to continue to circulate, so that process equipment needing cooling is protected; monitoring the temperature of the RO water by a temperature sensor 204 on the secondary water supply pipe 201, and when the temperature is higher than a set value, closing the electric control valve 106 on the primary water supply pipe 101 by opening the electric control valve 106 on the primary water supply pipe 101, and when the temperature is lower than the set value; the volume of the RO water in the nitrogen-sealed water tank 701 can be monitored through the liquid level sensor 702, and the RO water is conveniently and timely supplemented into the nitrogen-sealed water tank 701.
Specifically, the heat exchanger unit 3 is composed of two plate heat exchangers.
In the embodiment, the plate heat exchanger has the advantages of small floor area, high heat transfer coefficient, low manufacturing cost, light weight, small heat loss and the like.
Specifically, one end of the primary-side water supply pipe 101 is communicated with primary network input ends of the two plate heat exchangers, one end of the primary-side water return pipe 102 is communicated with primary network output ends of the two plate heat exchangers, one end of the secondary-side water supply pipe 201 is communicated with secondary network water supply ends of the two plate heat exchangers, and one end of the secondary-side water return pipe 202 is communicated with secondary network water return ends of the two plate heat exchangers.
In this embodiment, the primary water supply pipe 101 and the primary water return pipe 102 may be communicated with each other through two plate heat exchangers, the secondary water supply pipe 201 and the secondary water return pipe 202 may be communicated with each other through two plate heat exchangers, and heat exchange is achieved between the primary water supply pipe 101 and the primary water return pipe 102 and between the secondary water supply pipe 201 and the secondary water return pipe 202 through two plate heat exchangers.
Specifically, butterfly valves are installed in the primary-side water supply pipe 101, the primary-side water return pipe 102, the secondary-side water supply pipe 201, and the secondary-side water return pipe 202, and ball valves are installed in the primary-side water return pipe 102, the secondary-side water supply pipe 201, and the secondary-side water return pipe 202.
In this embodiment, through the design of butterfly valve and ball valve, the medium that flows inside primary water supply pipe 101, primary return water pipe 102, secondary water supply pipe 201 and secondary return water pipe 202 is conveniently adjusted and throttled, and the operation of opening and shutting is conveniently carried out primary water supply pipe 101, primary return water pipe 102, secondary water supply pipe 201 and secondary return water pipe 202 simultaneously, is favorable to going on of maintenance work and pipeline cleaning work.
Specifically, the circulating pump 401 and the diesel emergency pump 402 are both communicated with the secondary side return pipe 202 through a water inlet pipe and a water outlet pipe.
In this embodiment, both the circulation pump 401 and the diesel emergency pump 402 can pump the RO water in the secondary water return pipe 202 into the heat exchanger unit 3, and then the RO water enters the secondary water supply pipe 201, but the diesel emergency pump 402 directly supplies power through the diesel engine, and when the power failure occurs, the diesel emergency pump 402 starts to operate.
Specifically, all install the butterfly valve on the inlet tube of circulating pump 401 and diesel engine emergency pump 402 and the outlet pipe, all install the check valve on the outlet pipe of circulating pump 401 and diesel engine emergency pump 402.
In this embodiment, through the design of butterfly valve and check valve, conveniently adjust and throttle the medium, still have the function of preventing the refluence.
Specifically, the water inlet end of the water treatment mixed bed 5 is communicated with a pipeline of a secondary water supply pipe 201 provided with a flow meter 205 and an electromagnetic valve 206, and the water outlet end of the water treatment mixed bed 5 is communicated with a secondary water return pipe 202.
In this embodiment, the RO water in the secondary-side water supply pipe 201 is sent to the water inlet treatment mixed bed 5 for treatment, and then discharged into the secondary-side water return pipe 202 again, and then circulated again through the water pump unit 4, so that the resistivity of the RO water is continuously adjusted, and the resistivity of the RO water is ensured to be adjusted to a standard value.
Specifically, the nitrogen-sealed water tank 701 is communicated with the secondary-side water return pipe 202 through a pipeline, and a butterfly valve is installed on the pipeline.
In this embodiment, through the design of butterfly valve, when need not add RO water in secondary side wet return 202, keep the butterfly valve in the closed condition, when needing to add, open the butterfly valve again.
Specifically, the pressure sensor a103, the pressure sensor B203, the temperature sensor 204, the flow meter 205, the electromagnetic valve 206, the resistivity sensor 208, the circulating pump 401, the diesel emergency pump 402, the water treatment mixed bed 5 and the liquid level sensor 702 all work in cooperation with a PLC controller in the control cabinet 6.
In the embodiment, the intelligent control system can be used only by matching with a PLC in the control cabinet 6, and has the advantages of intelligence and stable and reliable work.
Specifically, the inside of the control cabinet 6 is further provided with electric elements such as a frequency converter, a remote transmission interface, an exhaust fan, a touch screen and the like.
In this embodiment, these electrical components form a complete control cabinet 6, which ensures that the control cabinet 6 can work normally.
The working principle and the using process of the invention are as follows: the secondary side water supply pipe 201 is communicated with a water inlet of a cooling pipeline of the process equipment, the secondary side water return pipe 202 is communicated with a water outlet of the cooling pipeline of the process equipment, when the RO water in the secondary side water return pipe 202 is sent into the heat exchanger unit 3 by the circulating pump 401 during operation, the resistivity of the RO water in the secondary side water return pipe 202 is detected by the resistivity sensor 208, when the resistivity of the RO water is higher than a standard value, the RO water in the secondary side water supply pipe 201 enters the water treatment mixed bed 5 for ultraviolet sterilization and permeation by opening the electromagnetic valve 206, and then enters the secondary side water return pipe 202 again until the resistivity of the RO water in the secondary side water return pipe 202 is detected by the resistivity sensor 208 to be in a normal value, then the electromagnetic valve 206 is closed, the whole process needs to work by being matched with a PLC controller in the control cabinet 6, when the resistivity of the RO, the RO water is added to the secondary-side return pipe 202 through the nitrogen-sealed water tank 701 so that the resistivity of the RO water can be maintained at a normal value, and the temperature sensor 204 of the secondary-side water supply pipe 201 monitors the temperature of the RO water, and opens the electric control valve 106 of the primary-side water supply pipe 101 when the temperature is higher than a set value and closes the electric control valve 106 of the primary-side water supply pipe 101 when the temperature is lower than the set value.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. the utility model provides a special cooling unit of PCW system which characterized in that: the system comprises a primary pipeline system (1), a secondary pipeline system (2), a heat exchanger unit (3), a water pump unit (4), a water treatment mixing bed (5), a control cabinet (6) and a water supplementing mechanism (7), wherein the primary pipeline system (1) and the secondary pipeline system (2) are in heat exchange connection through the heat exchanger unit (3), the water pump unit (4), the water treatment mixing bed (5) and the water supplementing mechanism (7) are all arranged on the secondary pipeline system (2) and communicated with the secondary pipeline system, and the primary pipeline system (1), the secondary pipeline system (2), the heat exchanger unit (3), the water pump unit (4), the water treatment mixing bed (5) and the water supplementing mechanism (7) are all matched with a PLC (programmable logic controller) in the control cabinet (6) to work;
The primary pipeline system (1) is composed of a primary side water supply pipe (101) and a primary side water return pipe (102), wherein a pressure sensor A (103) and a direct-reading thermometer A (104) are respectively installed on the primary side water supply pipe (101) and the primary side water return pipe (102), and a Y-shaped filter (105) and an electric regulating valve (106) are installed on the primary side water supply pipe (101);
The secondary pipeline system (2) comprises a secondary water supply pipe (201) and a secondary water return pipe (202), wherein pressure sensors B (203) are mounted on the secondary water supply pipe (201) and the secondary water return pipe (202), a temperature sensor (204), a flow meter (205) and an electromagnetic valve (206) are mounted on the secondary water supply pipe (201), and a direct-reading thermometer B (207) and a resistivity sensor (208) are mounted on the secondary water return pipe (202);
The water pump unit (4) comprises a circulating pump (401) and a diesel emergency pump (402), and direct-reading pressure gauges (403) are respectively arranged on water inlet pipes and water outlet pipes of the circulating pump (401) and the diesel emergency pump (402);
The water supplementing mechanism (7) comprises a nitrogen-sealed water tank (701), and a liquid level sensor (702) is installed on the nitrogen-sealed water tank (701).
2. The cooling unit dedicated to the PCW system according to claim 1, wherein: the heat exchanger unit (3) consists of two plate heat exchangers.
3. The cooling unit dedicated to the PCW system according to claim 2, wherein: one end of the primary side water supply pipe (101) is communicated with primary network input ends of the two plate heat exchangers, one end of the primary side water return pipe (102) is communicated with primary network output ends of the two plate heat exchangers, one end of the secondary side water supply pipe (201) is communicated with secondary network water supply ends of the two plate heat exchangers, and one end of the secondary side water return pipe (202) is communicated with secondary network water return ends of the two plate heat exchangers.
4. The cooling unit dedicated to the PCW system, according to claim 3, wherein: butterfly valves are mounted on the primary side water supply pipe (101), the primary side water return pipe (102), the secondary side water supply pipe (201) and the secondary side water return pipe (202), and ball valves are mounted on the primary side water return pipe (102), the secondary side water supply pipe (201) and the secondary side water return pipe (202).
5. The cooling unit dedicated to the PCW system according to claim 1, wherein: and the circulating pump (401) and the diesel engine emergency pump (402) are communicated with the secondary side water return pipe (202) through a water inlet pipe and a water outlet pipe.
6. The cooling unit dedicated to the PCW system according to claim 1, wherein: the butterfly valves are installed on water inlet pipes and water outlet pipes of the circulating pump (401) and the diesel engine emergency pump (402), and the check valves are installed on the water outlet pipes of the circulating pump (401) and the diesel engine emergency pump (402).
7. The cooling unit dedicated to the PCW system according to claim 1, wherein: the water inlet end of the water treatment mixing bed (5) is communicated with a pipeline of a secondary side water supply pipe (201) provided with a flowmeter (205) and an electromagnetic valve (206), and the water outlet end of the water treatment mixing bed (5) is communicated with a secondary side water return pipe (202).
8. The cooling unit dedicated to the PCW system according to claim 1, wherein: the nitrogen-sealed water tank (701) is communicated with the secondary side water return pipe (202) through a pipeline, and a butterfly valve is installed on the pipeline.
9. The cooling unit dedicated to the PCW system according to claim 1, wherein: the pressure sensor A (103), the pressure sensor B (203), the temperature sensor (204), the flowmeter (205), the electromagnetic valve (206), the resistivity sensor (208), the circulating pump (401), the diesel emergency pump (402), the water treatment mixed bed (5) and the liquid level sensor (702) all work in cooperation with a PLC (programmable logic controller) in the control cabinet (6).
10. The PCW system dedicated cooling unit according to claim 9, wherein: and electric elements such as a frequency converter, a remote transmission interface, an exhaust fan, a touch screen and the like are further arranged in the control cabinet (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910721039.5A CN110542270A (en) | 2019-08-06 | 2019-08-06 | Special cooling unit of PCW system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910721039.5A CN110542270A (en) | 2019-08-06 | 2019-08-06 | Special cooling unit of PCW system |
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| CN110953923A (en) * | 2019-12-23 | 2020-04-03 | 信息产业电子第十一设计研究院科技工程股份有限公司 | Control method of process cooling water system |
| CN114623650A (en) * | 2022-05-17 | 2022-06-14 | 中国空气动力研究与发展中心高速空气动力研究所 | Fine control system and fine control method for cooling water flow |
| CN114623650B (en) * | 2022-05-17 | 2022-08-09 | 中国空气动力研究与发展中心高速空气动力研究所 | Fine control method for cooling water flow |
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