CN219531249U - Medical efficient split cooling water system - Google Patents
Medical efficient split cooling water system Download PDFInfo
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- CN219531249U CN219531249U CN202320675423.8U CN202320675423U CN219531249U CN 219531249 U CN219531249 U CN 219531249U CN 202320675423 U CN202320675423 U CN 202320675423U CN 219531249 U CN219531249 U CN 219531249U
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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
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Abstract
The utility model provides a medical efficient split cooling water system, which comprises: the split type air-cooled chiller comprises a split type air-cooled chiller outdoor unit arranged outdoors and a split type air-cooled chiller indoor unit arranged indoors, wherein the split type air-cooled chiller refrigerating system is a double system which is independently refrigerated and mutually standby, and only one system works and the other system is standby during operation; the heat exchanger unit is arranged between indoor devices and connected with the split air-cooled chiller unit through a pipeline; a split air-cooled chiller controller; and a heat exchange unit controller. The medical efficient split cooling water system can provide cooling water at 5-35 ℃ for medical equipment all the year round, thereby meeting the requirements of the medical equipment on the cooling water. In addition, the split cooling water system can also be used for cooling other process equipment, such as plastic, electronic manufacturing, electroplating, pharmaceutical chemical industry, ultrasonic cooling, printing and other fields.
Description
Technical Field
The utility model relates to application of a split type water chiller in a cooling water system in the medical field.
Background
In the medical field, medical equipment such as nuclear magnetic resonance and cyclotrons need to use cooling water with a certain temperature throughout the year, the cold water load is mainly related to the heating value of the medical equipment, the influence of the outdoor environment temperature is small, and even in winter with low outdoor environment temperature, the cold load of a medical equipment cooling water system is still large. The integral air-cooled chiller is usually used for supplying chilled water, the integral air-cooled chiller is arranged outdoors, a part of water pipelines are also arranged outdoors, and in cold areas in winter, an evaporator of the air-cooled chiller and an outdoor water pipeline are easy to freeze under the condition of stopping a machine, so that the evaporator or the pipelines are frozen, and the potential safety hazard is great. Therefore, how to safely, reliably and stably provide cooling water for medical equipment even in winter is a problem to be solved.
Disclosure of Invention
The utility model aims to provide a medical efficient split cooling water system which can safely, reliably and stably provide medical cooling water at the temperature of 5-35 ℃ under the extreme weather condition of the ambient temperature of-25-46 ℃.
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:
a medical efficient split cooling water system comprising:
the split type air-cooled chiller comprises a split type air-cooled chiller, wherein the split type air-cooled chiller comprises two refrigeration systems, namely a refrigeration system a and a refrigeration system b, respectively, the refrigeration system a and the refrigeration system b are independent refrigeration systems, the refrigeration system a and the refrigeration system b are in a standby relation, and when the split type air-cooled chiller operates, only one system works and the other system is standby; the outdoor unit of the split air-cooled chiller unit comprises a condenser and a condensing fan; the indoor unit of the split air-cooled chiller unit is arranged indoors and comprises a compressor, an evaporator, an expansion valve, a dry filter, an internal water tank, an internal water pump and a water filter; the outdoor unit and the indoor unit of the split air-cooled chiller are connected through a pipeline, and the pipeline is filled with refrigerant;
the second heat exchange unit is arranged between indoor devices and connected with the split air-cooled chiller through a pipeline; the primary side of the heat exchange unit and the split air-cooled chiller form a chilled water circulation loop, and chilled water medium is circulated inside the chilled water circulation loop; medical equipment between the secondary side of the heat exchange unit and indoor equipment forms a cooling water circulation loop, deionized water is used as a medium of a cooling water system for internal circulation, and cooling water at 5-35 ℃ is provided for the medical equipment;
the split type air-cooled chiller controller comprises an input end and a control end;
an input end: ST1 is a plate-change anti-freezing temperature sensor, ST2 is a water supply temperature sensor, SP1 and SP2 are condensation pressure sensors, and the four sensors are all analog input;
and the control end: the water pump and the compressor are controlled to output switching value, and are responsible for the start and stop control of the water pump and the compressor; the condensing fan is controlled to output analog quantity and is responsible for stepless speed regulation of the condensing fan;
a heat exchange unit controller is used for adjusting the water supply temperature and water flow rate of the cooling water with high precision, and controlling the opening degree of the electric three-way valve to control the water supply temperature of the cooling water according to the signals of the temperature sensor arranged on the cooling water supply pipe;
the split type air-cooled water chiller, the heat exchanger unit, the split type air-cooled water chiller controller and the heat exchanger unit controller form a complete medical efficient split type two-stage cooling water system.
The split air-cooled chiller unit comprises:
the outdoor unit 1 of the split air-cooled chiller unit is arranged outdoors, and the main components of the outdoor unit comprise a condenser 1-1a and a condensing fan 1-2a of a refrigerating system a; a condenser 1-1b and a condensing fan 1-2b of the refrigeration system b;
wherein, split type forced air cooling water set indoor set 2 installs in indoor, and its main part contains:
the method comprises the steps that a compressor 2-5a of a refrigeration system a, an evaporator 2-4a of the refrigeration system a, an expansion valve 2-6a of the refrigeration system a and a dry filter 2-7a of the refrigeration system a, wherein a condenser 1-1a of the refrigeration system a, the dry filter 2-7a of the refrigeration system a, an expansion valve 2-6a of the refrigeration system a and the evaporator 2-4a of the refrigeration system a are sequentially connected through a liquid pipe 2-9a of the refrigeration system a, and the evaporator 2-4a of the refrigeration system a, the compressor 2-5a of the refrigeration system a and the condenser 1-1a of the refrigeration system a are sequentially connected through an air pipe 2-8a of the refrigeration system a;
the compressor 2-5b of the refrigerating system b, the evaporator 2-4b of the refrigerating system b, the expansion valve 2-6b of the refrigerating system b and the drier-filter 2-7b of the refrigerating system b, wherein the condenser 1-1b of the refrigerating system b, the drier-filter 2-7b of the refrigerating system b, the expansion valve 2-6b of the refrigerating system b and the evaporator 2-4b of the refrigerating system b are sequentially connected through the liquid pipe 2-9b of the refrigerating system b, and the evaporator 2-4b of the refrigerating system b, the compressor 2-5b of the refrigerating system b and the condenser 1-1b of the refrigerating system b are sequentially connected through the air pipe 2-8b of the refrigerating system b;
a connecting pipeline is arranged between the refrigerating system a evaporator 2-a and the refrigerating system b evaporator 2-b;
the water pump also comprises an internal water tank 2-3, an internal water pump 2-2 and an internal water filter 2-10; the built-in water tank 2-3 and the built-in water pump 2-2 are arranged on a water outlet pipe of the indoor unit 2 of the split type air-cooled water chilling unit, and the built-in water filter 2-10 is arranged on a water inlet pipe of the indoor unit 2 of the split type air-cooled water chilling unit.
The heat exchanger unit 7 comprises a plate heat exchanger 7-2, a water pump 7-5, a water tank 7-4, an electric three-way valve 7-3, a water supply pipeline and a water return pipeline;
the plate heat exchanger is a core component of the heat exchanger unit, chilled water flows in the primary side of the plate heat exchanger, the primary side water inlet of the plate heat exchanger is connected with a chilled water supply pipe of the indoor unit of the split type air-cooled chiller unit, and the primary side water outlet of the plate heat exchanger is connected with a chilled water return pipe of the indoor unit of the split type air-cooled chiller unit; the cooling water flows in the secondary side of the plate heat exchanger, the secondary side outlet of the heat exchanger unit is connected with the inlet of the medical equipment through the electric three-way valve 7-3, the water tank 7-4 and the water pump 7-5 by the cooling water supply pipeline, and the outlet of the medical equipment is connected with the secondary side inlet of the plate heat exchanger by the cooling water return pipeline.
Further, a PPR pipe is adopted in a chilled water supply and return pipeline connected between the indoor unit of the split type air-cooled chiller and the heat exchanger, and a water filter 5 and a flowmeter 6 are arranged on the water supply pipeline.
The split air-cooled chiller controller 2-1 is respectively connected with a plate-change anti-freezing temperature sensor ST1, a water supply temperature sensor ST2, a condensing pressure sensor SP1 of a refrigerating system a and a condensing pressure sensor SP2 of a refrigerating system b; simultaneously, the split type air-cooled chiller controller 2-1 is connected with a compressor 2-5a of a refrigerating system a, a compressor 2-5b of a refrigerating system b, an expansion valve 2-6a of the refrigerating system a, an expansion valve 2-6b of the refrigerating system b, a condensing fan 1-2a of the refrigerating system a, a condensing fan 1-2b of the refrigerating system b and a built-in water pump 2-2.
The heat exchanger unit controller 7-1 includes: the system comprises a heat exchanger unit water supply temperature sensor ST3 arranged on a water supply main, a helium press water return temperature sensor ST4 arranged on a helium press water return branch pipe, a flow temperature sensor 7-8 arranged on a return water pipe of an RFPA (radio frequency power amplifier), a flow temperature sensor 7-9 arranged on a return water pipe of a GC (gas phase) gradient coil, a flow temperature sensor 7-11 arranged on a return water pipe of a GPA (gas phase) gradient power amplifier, a flowmeter 7-7 of a machine room air conditioner arranged on a machine room air conditioner water supply pipe, and a flowmeter 7-10 of the helium press arranged on the helium press water supply pipe, wherein the seven sensors are all analog quantity inputs; controlling a water pump of the heat exchange unit to output switching value, and controlling the start and stop of the water pump; and controlling the electric three-way valve to output analog quantity, and controlling the opening of the electric three-way valve to control the temperature of secondary side water supply.
The design principle and the beneficial effects of the utility model are as follows:
according to the medical efficient split cooling water system, the indoor unit of the refrigerating unit, the heat exchange unit, the freezing water pipeline and the water supply and return pipeline of the cooling water pipeline are all arranged indoors, and even in extreme weather in winter, the evaporator is arranged on the indoor unit of the split air-cooled chiller, and the risk of frost cracking of the evaporator and the risk of frost cracking of the freezing water pipeline and the water supply and return pipeline of the cooling water pipeline are avoided under the condition of shutdown.
The split type air-cooled chiller refrigerating system is provided with two systems, namely a refrigerating system a and a refrigerating system b, wherein the refrigerating system a and the refrigerating system b are independent refrigerating systems and are in standby relation. When the refrigerating unit operates, only one system works, and the other system is standby, so that the system can provide cooling water for medical equipment more reliably and safely.
According to the utility model, the cooling water can be continuously provided for the helium compressor, when the split type air-cooled chiller and the heat exchanger unit fail and cannot be recovered in a short period, tap water is temporarily switched, the tap water is used as standby cooling water, and after the split type air-cooled chiller and the heat exchanger unit fail to be recovered, the tap water is switched back to the cooling water loop, so that the cooling water can be continuously provided for nuclear magnetic resonance. The utility model can accurately control the temperature and flow of medical cooling water and avoid the potential safety hazard of freezing and cracking of an outdoor water pipeline in winter. The problem of providing stable cooling water under various weather conditions is well solved.
The two sets of control systems ensure the water supply temperature and flow of the five paths of cooling water. The split air-cooled chiller controller is a control system of the split air-cooled chiller and has the function of adjusting the chilled water supply temperature with high precision. The heat exchanger unit controller is a control system of the heat exchanger unit and has the function of adjusting the water supply temperature and water flow of the cooling water with high precision. The opening degree of the electric three-way valve is precisely controlled according to the signal of the temperature sensor arranged on the cooling water supply pipe so as to control the water supply temperature of the cooling water. The flow temperature sensor 7-8 is arranged on the return water pipeline of the RFPA radio frequency amplifier, the flow temperature sensor 7-9 is arranged on the return water pipeline of the GC gradient coil, and the flow temperature sensor 7-11 is arranged on the return water pipeline of the GPA gradient power amplifier, so that the flow rate and the temperature of cooling water of three paths can be respectively displayed; the flowmeter 7-7 of the machine room air conditioner is arranged on the water supply pipeline of the machine room air conditioner, and the flowmeter 7-10 of the helium press is arranged on the water supply pipeline of the helium press, so that the flow rates of cooling water in two paths can be respectively displayed.
The utility model utilizes the Y-shaped filter to filter the particle impurities in the cooling water, thereby ensuring the water supply cleanliness of the cooling water.
The medical efficient split cooling water system can provide cooling water at the temperature of 5-35 ℃ for medical equipment all the year round, thereby meeting the requirement of the medical equipment on the cooling water. In addition, the split cooling water system can also be used for cooling other process equipment, such as plastic, electronic manufacturing, electroplating, pharmaceutical chemical industry, ultrasonic cooling, printing and other fields.
Drawings
Fig. 1 is a schematic diagram of a medical efficient split cooling water system according to an embodiment of the present utility model.
The figures show:
1. an outdoor unit of the split air-cooled chiller; 1-1a, a condenser of a refrigeration system a; 1-2a, a condensing fan of a refrigerating system a; 1-1b, a condenser of a refrigeration system b; 1-2b, a refrigerating system b condensing fan.
2. Indoor machine of split air-cooled chiller; 2-1, a split air-cooled chiller controller; 2-2, a built-in water pump; 2-3, a built-in water tank; 2-10, a built-in water filter; 2-4a, an evaporator of a refrigeration system a; 2-5a, a compressor of a refrigeration system a; 2-6a, an expansion valve of a refrigeration system a; 2-7a, a dry filter of a refrigeration system a; 2-8a, an air pipe of a refrigerating system a; 2-9a, a liquid pipe of a refrigeration system a; 2-4b, an evaporator of a refrigeration system b; 2-5b, a compressor of the refrigeration system b; 2-6b, an expansion valve of the refrigeration system b; 2-7b, a dry filter of a refrigerating system b; 2-8b, an air pipe of a refrigerating system b; 2-9b, a liquid pipe of a refrigerating system b;
3. a PPR water supply pipe; 4. a PPR return pipe; 5. a water filter; 6. a flow meter;
7. a heat exchange unit; 7-1, a heat exchange unit controller; 7-2, a plate heat exchanger; 7-3, an electric three-way valve; 7-4, a water tank; 7-5, a water pump; 7-6, a stop valve; 7-7, a flowmeter of an air conditioner of a machine room; 7-8, a temperature flow sensor on a return water pipeline of the RFPA radio frequency amplifier; 7-9, a temperature flow sensor on a GC gradient coil return water pipeline; 7-10, a flowmeter of a helium press; 7-11, a temperature flow sensor on a return water pipeline of the GPA gradient power amplifier; 7-12, a cooling water supply main pipe; 7-13, a cooling water return main pipe; 7-14, a backwater branch pipe of the air conditioner of the machine room; 7-15, a water supply branch pipe of an air conditioner of a machine room; 7-16, a water supply branch pipe of the RFPA; 7-17, a backwater branch pipe of the RFPA; 7-18, water supply branch pipes of the GC gradient coil; 7-19, a return branch pipe of the GC gradient coil; 7-20, a water supply branch pipe of a helium press; 7-21, a return branch pipe of the helium press; 7-22, a water supply branch pipe of the GPA gradient power amplifier; 7-23, a return branch pipe of the GPA gradient power amplifier;
8. helium compressor; 10. feeding tap water; 11. draining water; 12. a drain stop valve; 13. a tap water inlet stop valve; 14. helium compressor cooling water inlet stop valve; 15. helium compressor cooling water outlet stop valve;
9. air conditioning of a machine room; 9-1, a refrigeration coil; 9-2, a fan.
Detailed Description
Embodiments of the present utility model are further described below with reference to the accompanying drawings.
A medical efficient split cooling water system is a precise refrigerating unit system specially developed for satisfying the cooling of medical equipment such as nuclear magnetic resonance, cyclotron and the like. The cooling water system can provide cooling water required for cooling nuclear magnetic resonance, cyclotrons and the like of most brands and specifications worldwide. The heat exchanger inside the medical device requires very stringent circulating media and deionized water is required as the cooling medium. The circulating medium of the split air-cooled chiller can adopt tap water, deionized water and the like as the circulating medium. The system can customize the control precision of the liquid supply temperature of the cooling water system for medical equipment according to the requirement, and the highest control precision can be within +/-0.5 degrees.
As shown in fig. 1, the medical efficient split cooling water system provided by the embodiment has the main functions of: under the extreme weather condition of the ambient temperature of-25-46 ℃, the cooling water of 5-35 ℃ can be safely, reliably and stably provided for the medical equipment, thereby meeting the working requirements of the medical equipment.
A medical efficient split cooling water system comprising:
the split type air-cooled water chilling unit comprises two refrigeration systems, namely a refrigeration system a and a refrigeration system b, wherein the refrigeration system a and the refrigeration system b are independent refrigeration systems, the refrigeration system a and the refrigeration system b are in a standby relation, and when the refrigeration unit operates, only one system works and the other system is standby. The outdoor unit of the split air-cooled chiller unit comprises a condenser and a condensing fan; the indoor unit of the split air-cooled chiller comprises a compressor, an evaporator, an expansion valve, a dry filter, an internal water tank, an internal water pump and a water filter. The outdoor unit and the indoor unit of the split air-cooled chiller are connected through a pipeline, and the pipeline is filled with refrigerant.
The second heat exchange unit is arranged in the equipment room and is connected with the split air-cooled water chilling unit through a pipeline; the primary side of the heat exchange unit and the split air-cooled chiller form a chilled water circulation loop, and chilled water medium is circulated inside the chilled water circulation loop; the secondary side of the heat exchanger unit and medical equipment in the equipment room form a cooling water circulation loop, deionized water is used as a medium of a cooling water system for internal circulation, and cooling water at 5-35 ℃ is provided for the medical equipment;
the split type air-cooled chiller controller 2-1 comprises an input end and a control end;
an input end: ST1 is a plate-change anti-freezing temperature sensor, ST2 is a water supply temperature sensor, SP1 and SP2 are condensation pressure sensors, and the four sensors are all analog input;
and the control end: the water pump and the compressor are controlled to output switching value, and are responsible for the start and stop control of the water pump and the compressor; the condensing fan is controlled to output analog quantity and is responsible for stepless speed regulation of the condensing fan.
A fourth heat exchange unit controller 7-1 for precisely adjusting the water supply temperature and water flow rate of the cooling water, and precisely controlling the opening of the electric three-way valve according to the signal of the temperature sensor installed on the water supply pipe of the cooling water to control the water supply temperature of the cooling water;
the split type air-cooled water chiller, the heat exchanger unit, the split type air-cooled water chiller controller and the heat exchanger unit controller form a complete medical efficient split type two-stage cooling water system.
Specifically, the split type air-cooled chiller unit:
the outdoor unit 1 of the split air-cooled chiller unit is arranged outdoors, and the main components of the outdoor unit comprise a condenser 1-1a of a refrigeration system a and a condensing fan 1-2a of the refrigeration system a; a condenser 1-1b of the refrigeration system b and a condensing fan 1-2b of the refrigeration system b;
wherein, split type forced air cooling water set indoor set 2 installs in indoor, and its main part contains:
the method comprises the steps that a compressor 2-5a of a refrigeration system a, an evaporator 2-4a of the refrigeration system a, an expansion valve 2-6a of the refrigeration system a and a dry filter 2-7a of the refrigeration system a, wherein a condenser 1-1a of the refrigeration system a, the dry filter 2-7a of the refrigeration system a, an expansion valve 2-6a of the refrigeration system a and the evaporator 2-4a of the refrigeration system a are sequentially connected through a liquid pipe 2-9a of the refrigeration system a, and the evaporator 2-4a of the refrigeration system a, the compressor 2-5a of the refrigeration system a and the condenser 1-1a of the refrigeration system a are sequentially connected through an air pipe 2-8a of the refrigeration system a;
the compressor 2-5b of the refrigerating system b, the evaporator 2-4b of the refrigerating system b, the expansion valve 2-6b of the refrigerating system b and the drier-filter 2-7b of the refrigerating system b, wherein the condenser 1-1b of the refrigerating system b, the drier-filter 2-7b of the refrigerating system b, the expansion valve 2-6b of the refrigerating system b and the evaporator 2-4b of the refrigerating system b are sequentially connected through the liquid pipe 2-9b of the refrigerating system b, and the evaporator 2-4b of the refrigerating system b, the compressor 2-5b of the refrigerating system b and the condenser 1-1b of the refrigerating system b are sequentially connected through the air pipe 2-8b of the refrigerating system b;
a connecting pipeline is arranged between the refrigerating system a evaporator 2-a and the refrigerating system b evaporator 2-b;
the water pump also comprises an internal water tank 2-3, an internal water pump 2-2 and an internal water filter 2-10; the built-in water tank 2-3 and the built-in water pump 2-2 are arranged on a water outlet pipe of the indoor unit 2 of the split type air-cooled water chilling unit, and the built-in water filter 2-10 is arranged on a water inlet pipe of the indoor unit 2 of the split type air-cooled water chilling unit.
By way of example and not limitation, the outdoor unit 1 and the indoor unit 2 of the split type air-cooled chiller are connected through copper pipes, and environment-friendly refrigerant is filled in the copper pipes.
Specifically, the heat exchanger unit 7 comprises a plate heat exchanger 7-2, a water pump 7-5, a water tank 7-4, an electric three-way valve 7-3, a water supply pipeline and a water return pipeline;
by way of example and not limitation, the chilled water supply and return pipeline connected between the indoor unit 2 of the split air-cooled chiller unit and the heat exchanger unit 7 adopts PPR pipes, specifically a PPR water supply pipe 3 and a PPR return pipe 4, and a water filter 5 and a flowmeter 6 are arranged on the PPR water supply pipe 3;
the plate heat exchanger is a core component of the heat exchanger unit, chilled water flows in the primary side of the plate heat exchanger, the primary side water inlet of the plate heat exchanger is connected with a chilled water supply pipe of the indoor unit of the split type air-cooled chiller unit, and the primary side water outlet of the plate heat exchanger is connected with a chilled water return pipe of the indoor unit of the split type air-cooled chiller unit; the secondary side outlet of the heat exchanger unit is connected with the inlet of medical equipment through a cooling water supply pipeline, an electric three-way valve 7-3, a water tank 7-4 and a water pump 7-5; the outlet of the medical equipment is connected with the secondary side inlet of the plate heat exchanger through a cooling water return pipeline.
The working principle of the heat exchange unit is as follows: the split type air-cooled water chilling unit operates for refrigeration, low-temperature chilled water from the evaporator of the indoor unit is supplied to a plate heat exchanger in the heat exchange unit through a water supply pipe, after heat exchange is carried out through the plate heat exchanger, the temperature of the chilled water rises, and after filtration is carried out through a return water pipe through a return water filter, the chilled water enters the evaporator of the indoor unit of the split type air-cooled water chilling unit for heat exchange, and after the chilled water is discharged from the evaporator, the chilled water becomes low-temperature chilled water, so that a chilled water circulation process is completed; cooling water flows in the secondary side of the plate heat exchanger, and the cooling water from the plate heat exchanger is supplied to medical equipment through a water supply pipeline by an electric three-way valve, a water tank and a water pump; after the cooling water exchanges heat in the medical equipment, the heat productivity in the equipment is released to the cooling water, the cooling water temperature is increased, and after the warmed cooling water enters the plate heat exchanger for exchanging heat between the secondary side and the primary side low-temperature chilled water, the cooling water temperature is reduced, so that a cooling water circulation process is completed.
The refrigerating process of the split air-cooled chiller is specifically described by the refrigerating process of a refrigerating system a: the low-temperature low-pressure liquid refrigerant coming out of the expansion valve 2-6a absorbs heat in the evaporator 2-4a and is vaporized into low-temperature low-pressure gaseous refrigerant, the low-temperature low-pressure gaseous refrigerant is compressed into high-temperature high-pressure gaseous refrigerant through the compressor 2-5a, the gaseous refrigerant is conveyed to the condenser 1-1a of the outdoor unit 1 through the air pipe 2-8a, after the gaseous refrigerant exchanges heat with outdoor air in the condenser 1-1a, the heat of the gaseous refrigerant is transferred to the outdoor air to become high-temperature high-pressure liquid refrigerant, the liquid refrigerant is conveyed to the indoor unit 2 through the liquid pipe 2-9a, moisture is removed through the drying filter 2-7a, the liquid refrigerant is conveyed to the expansion valve 2-6a, the liquid refrigerant is throttled by the expansion valve 2-6a to be changed into low-temperature low-pressure liquid refrigerant, and then the low-temperature low-pressure liquid refrigerant is conveyed into the evaporator 2-4a to exchange heat with chilled water flowing through the evaporator 2-4a, the chilled water absorbs chilled water, and the chilled water temperature is lowered, and a refrigerant cycle is completed.
The indoor unit 2 of the split type air-cooled water chilling unit is connected with the heat exchange unit 7 through a PPR water pipe, return water with higher temperature, which is discharged from a water outlet of the heat exchange unit 7, is conveyed to the indoor unit 2 of the split type air-cooled water chilling unit through a PPR water return pipe 4, impurities are removed through filtration of a built-in water filter 2-10, then the return water is conveyed to an evaporator 2-4b and an evaporator 2-4a of the indoor unit 2, the chilled water is subjected to heat exchange by the evaporator 2-4b and the evaporator 2-4a, the absorbed heat temperature is reduced, the chilled water becomes lower temperature chilled water and then enters a built-in water tank 2-3, the impurities are removed through a PPR water supply pipe 3 after being pressurized by a built-in water pump 2-2, the impurities are removed through a water filter 5, the return water enters a water inlet of the heat exchange unit 7 through a flowmeter 6, the return water enters a plate-type heat exchanger 7-2 in the heat exchange unit 7, the temperature is increased after heat exchange with cooling water in the heat exchanger, and the chilled water with higher temperature is discharged from the water outlet of the heat exchange unit 7, so that a chilled water circulation process is completed.
A plate-change anti-freezing temperature sensor ST1 is arranged on a water outlet pipeline of the evaporator and is used for detecting the water outlet temperature of the evaporator; a water supply temperature sensor ST2 is arranged on the water outlet pipeline of the built-in water pump and is used for detecting the water supply temperature of the indoor unit 2 of the split air-cooled chiller.
The split air-cooled chiller controller 2-1 is respectively connected with a plate-change anti-freezing temperature sensor ST1, a water supply temperature sensor ST2, a condensing pressure sensor SP1 of a refrigerating system a and a condensing pressure sensor SP2 of a refrigerating system b; simultaneously, the split type air-cooled chiller controller 2-1 is connected with a compressor 2-5a of a refrigerating system a, a compressor 2-5b of a refrigerating system b, an expansion valve 2-6a of the refrigerating system a, an expansion valve 2-6b of the refrigerating system b, a condensing fan 1-2a of the refrigerating system a, a condensing fan 1-2b of the refrigerating system b and a built-in water pump 2-2.
In the embodiment, the heat exchange unit 7 is connected with medical equipment through a PPR water pipe, cooling water with lower temperature comes out from the secondary side of the plate heat exchanger 7-2 of the heat exchange unit 7, enters the water tank 7-4 after passing through the electric three-way valve 7-3, is pressurized by the water pump 7-5 and is conveyed to a plurality of water supply branch pipes through the water supply main pipe 7-12, and an ST3 temperature sensor is arranged on the water supply main pipe 7-12.
In the embodiment, five helium compressors are also included, the helium compressors are important auxiliary equipment for nuclear magnetic resonance, the helium compressors need to continuously operate just like a human heart at a moment, and refrigeration capacity is continuously provided for nuclear magnetic resonance, so that the purpose of reducing liquid helium evaporation is achieved. Normally helium compressors are continuously operated except for machine service. The water inlet of the helium compressor is connected with the cooling water supply branch pipe 7-20, the water outlet of the helium compressor is connected with the cooling water return branch pipe 7-21, and heat generated by operation of the helium compressor is taken away by circulating cooling water. When the split air-cooled chiller and the heat exchanger fail and cannot be recovered in a short period, tap water is temporarily switched, tap water is used as standby cooling water, the drainage stop valve 12 and the tap water inlet stop valve 13 are opened, the helium compressor cooling water inlet stop valve 14 and the helium compressor cooling water outlet stop valve 15 are closed, tap water supply cooling water is switched, the cooling water loop is switched after the faults of the split air-cooled chiller and the heat exchanger are repaired, the helium compressor cooling water inlet stop valve 14 and the helium compressor cooling water outlet stop valve 15 are opened, and the drainage stop valve 12 and the tap water inlet stop valve 13 are closed.
In the embodiment, the device also comprises a machine room air conditioner which is arranged in the equipment room and used for cooling the equipment room, wherein the main components of the machine room air conditioner are a refrigerating coil and a fan, the water inlet of the refrigerating coil is connected with the cooling water supply branch pipe 7-15, and the water outlet of the refrigerating coil is connected with the cooling water return branch pipe 7-14. The return air with higher temperature passes through the refrigerating coil, exchanges heat with low-temperature cooling water in the refrigerating coil, and then is cooled to become low-temperature air which is sent to the equipment room by the fan to cool the equipment room.
By way of example and not limitation, the cooling water is supplied to five devices, respectively: RFPA radio frequency amplifier, GC gradient coil, GPA gradient power amplifier, helium press, computer lab air conditioner. The cooling water from the plate heat exchanger passes through an electric three-way valve, a water tank, a water pump and a water supply header pipe, is divided into five paths of water supply branch pipes and is connected to the RFPA radio frequency amplifier, the GC gradient coil, the GPA gradient power amplifier, the helium compressor and the water inlet of a machine room air conditioner, after the cooling water exchanges heat in the five devices, the heat productivity in the devices is released to the cooling water, the temperature of the cooling water is increased, the temperature of the warmed cooling water enters the plate heat exchanger for heat exchange between the secondary side and the primary side low-temperature chilled water, and then the temperature of the cooling water is reduced, so that a cooling water circulation process is completed.
Specifically, the water supply branch pipe 7-15 of the machine room air conditioner 9 is connected to the water inlet of the machine room air conditioner 9, enters the refrigerating coil 9-1, after the low-temperature cooling water exchanges heat with the return air with higher temperature in the refrigerating coil 9-1, the temperature of the cooling water is increased to become cooling water with higher temperature, the cooling water passes through the return water branch pipe 7-14 and then enters the return water main pipe 7-13, and the flowmeter 7-7 and the stop valve 7-6 of the machine room air conditioner are arranged on the water supply branch pipe 7-15 of the machine room air conditioner 9. The water supply branch pipe 7-16 of the RFPA radio frequency amplifier is connected to the water inlet of the RFPA radio frequency amplifier, enters the RFPA radio frequency amplifier, after the low-temperature cooling water absorbs heat emitted by the radio frequency amplifier, the temperature of the cooling water is increased to become cooling water with higher temperature, the cooling water passes through the water return branch pipe 7-17 and then enters the water return main pipe 7-13, and the water return branch pipe 7-17 of the RFPA radio frequency amplifier is provided with the temperature flow sensor 7-8. The water supply branch pipe 7-18 of the GC gradient coil is connected to the water inlet of the GC gradient coil, enters the GC gradient coil, after the low-temperature cooling water absorbs heat emitted by the GC gradient coil, the temperature of the cooling water is increased to become cooling water with higher temperature, the cooling water passes through the water return branch pipe 7-19 and then enters the water return main pipe 7-13, and the water return branch pipe 7-19 of the GC gradient coil is provided with the temperature flow sensor 7-9. The water supply branch pipe 7-20 of the helium press 8 is connected to the water inlet of the helium press 8, enters the helium press 8, after the low-temperature cooling water absorbs heat emitted by the helium press 8, the temperature of the cooling water is increased to be higher-temperature cooling water, the cooling water passes through the water return branch pipe 7-21 and then enters the water return main pipe 7-13, the flowmeter 7-10 of the helium press is arranged on the water supply branch pipe 7-20 of the helium press 8, and the temperature sensor ST4 is arranged on the water return branch pipe 7-21 of the helium press 8. The water supply branch pipe 7-22 of the GPA gradient power amplifier is connected to the water inlet of the GPA gradient power amplifier, enters the GPA gradient power amplifier, and after low-temperature cooling water absorbs heat emitted by the GPA gradient power amplifier, the temperature of the cooling water is increased to become cooling water with higher temperature, the cooling water passes through the water return branch pipe 7-23 and then enters the water return main pipe 7-13, and the water return branch pipe 7-23 of the GPA gradient power amplifier is provided with the temperature flow sensor 7-11. The cooling water with higher temperature enters the water inlet of the secondary side of the plate heat exchanger 7-2 through the water return header pipe 7-13, exchanges heat with the primary chilled water in the plate heat exchanger and becomes low-temperature cooling water, and the circulation process of the cooling water is completed.
The heat exchange unit controller includes: the system comprises a heat exchanger unit water supply temperature sensor ST3 arranged on a water supply main, a helium press water return temperature sensor ST4 arranged on a helium press water return branch pipe, a flow temperature sensor 7-8 arranged on a return water pipe of an RFPA (radio frequency power amplifier), a flow temperature sensor 7-9 arranged on a return water pipe of a GC (gas phase) gradient coil, a flow temperature sensor 7-11 arranged on a return water pipe of a GPA (gas phase) gradient power amplifier, a flowmeter 7-7 arranged on a water supply pipe of an air conditioner of a machine room, and a flowmeter 7-10 arranged on a water supply pipe of the helium press, wherein the seven sensors are all analog quantity inputs; controlling a water pump of the heat exchange unit to output switching value, and controlling the start and stop of the water pump; and controlling the electric three-way valve to output analog quantity, and controlling the opening of the electric three-way valve to control the temperature of secondary side water supply.
As an application example, the utility model can uninterruptedly provide cooling water for the helium compressor, when the split type air-cooled chiller and the heat exchanger unit fail and cannot recover in a short period, tap water is temporarily switched, the tap water is used as standby cooling water, and after the split type air-cooled chiller and the heat exchanger unit fail to recover, the tap water is switched back to a cooling water loop, and the cooling water is uninterruptedly provided for the helium compressor.
When the medical cooling water system is particularly applied, the controller can provide medical cooling water at the temperature of 5-35 ℃ under the condition of the ambient temperature of-25-46 ℃ under the management of a control program. The medical cooling water temperature and flow control system is an outsourced cola control system, and a cola controller purchased by the controller (which is a mature product in the market in the field and provided with application software) is used for switching and managing the medical efficient split cooling water system.
The above description is only illustrative of the preferred embodiments of the utility model and is not intended to limit the scope of the utility model in any way. Any alterations or modifications of the utility model, which are obvious to those skilled in the art based on the teachings disclosed above, are intended to be equally effective embodiments, and are intended to be within the scope of the appended claims.
Claims (6)
1. A medical efficient split cooling water system, comprising:
the split type air-cooled chiller comprises a split type air-cooled chiller, wherein the split type air-cooled chiller comprises two refrigeration systems, namely a refrigeration system a and a refrigeration system b, respectively, the refrigeration system a and the refrigeration system b are independent refrigeration systems, the refrigeration system a and the refrigeration system b are in a standby relation, and when the split type air-cooled chiller operates, only one system works and the other system is standby; the outdoor unit of the split air-cooled chiller unit comprises a condenser and a condensing fan; the indoor unit of the split air-cooled chiller unit is arranged indoors and comprises a compressor, an evaporator, an expansion valve, a dry filter, an internal water tank, an internal water pump and a water filter; the outdoor unit and the indoor unit of the split air-cooled chiller are connected through a pipeline, and the pipeline is filled with refrigerant;
the second heat exchange unit is arranged between indoor devices and connected with the split air-cooled chiller through a pipeline; the primary side of the heat exchange unit and the split air-cooled chiller form a chilled water circulation loop, and chilled water medium is circulated inside the chilled water circulation loop; medical equipment between the secondary side of the heat exchange unit and indoor equipment forms a cooling water circulation loop, deionized water is used as a medium of a cooling water system for internal circulation, and cooling water at 5-35 ℃ is provided for the medical equipment;
the split type air-cooled chiller controller comprises an input end and a control end;
an input end: ST1 is a plate-change anti-freezing temperature sensor, ST2 is a water supply temperature sensor, SP1 and SP2 are condensation pressure sensors, and the four sensors are all analog input;
and the control end: the water pump and the compressor are controlled to output switching value, and are responsible for the start and stop control of the water pump and the compressor; the condensing fan is controlled to output analog quantity and is responsible for stepless speed regulation of the condensing fan;
a heat exchange unit controller is used for adjusting the water supply temperature and water flow rate of the cooling water with high precision, and controlling the opening degree of the electric three-way valve to control the water supply temperature of the cooling water according to the signals of the temperature sensor arranged on the cooling water supply pipe;
the split type air-cooled water chiller, the heat exchanger unit, the split type air-cooled water chiller controller and the heat exchanger unit controller form a complete medical efficient split type two-stage cooling water system.
2. The medical efficient split cooling water system of claim 1, wherein the split air-cooled chiller:
the outdoor unit (1) of the split air-cooled chiller unit is arranged outdoors, and the main components of the outdoor unit comprise a condenser (1-1 a) and a condensing fan (1-2 a) of a refrigerating system a; a condenser (1-1 b) and a condensing fan (1-2 b) of the refrigeration system b;
wherein, split type forced air cooling water set indoor set (2), install in indoor, its main part contains:
the evaporator (2-4 a) of the refrigeration system a, the expansion valve (2-6 a) of the refrigeration system a and the drier-filter (2-7 a) of the refrigeration system a are sequentially connected through the liquid pipe (2-9 a) of the refrigeration system a, wherein the condenser (1-1 a) of the refrigeration system a, the drier-filter (2-7 a) of the refrigeration system a, the expansion valve (2-6 a) of the refrigeration system a and the evaporator (2-4 a) of the refrigeration system a are sequentially connected through the gas pipe (2-8 a) of the refrigeration system a;
the condenser (1-1 b) of the refrigeration system b, the dry filter (2-7 b) of the refrigeration system b, the expansion valve (2-6 b) of the refrigeration system b and the evaporator (2-4 b) of the refrigeration system b are sequentially connected through a liquid pipe (2-9 b) of the refrigeration system b, the evaporator (2-4 b) of the refrigeration system b, the compressor (2-5 b) of the refrigeration system b and the condenser (1-1 b) of the refrigeration system b are sequentially connected through an air pipe (2-8 b) of the refrigeration system b;
a connecting pipeline is arranged between the evaporator (2-a) of the refrigeration system a and the evaporator (2-b) of the refrigeration system b;
the water tank (2-3), the water pump (2-2) and the water filter (2-10) are arranged in the water tank; the built-in water tank (2-3) and the built-in water pump (2-2) are arranged on a water outlet pipe of the indoor unit (2) of the split air-cooled water chilling unit, and the built-in water filter (2-10) is arranged on a water inlet pipe of the indoor unit (2) of the split air-cooled water chilling unit.
3. The medical efficient split cooling water system according to claim 1, wherein the heat exchanger unit (7) comprises a plate heat exchanger (7-2), a water pump (7-5), a water tank (7-4), an electric three-way valve (7-3), a water supply pipeline and a water return pipeline;
the plate heat exchanger is a core component of the heat exchanger unit, chilled water flows in the primary side of the plate heat exchanger, the primary side water inlet of the plate heat exchanger is connected with a chilled water supply pipe of the indoor unit of the split type air-cooled chiller unit, and the primary side water outlet of the plate heat exchanger is connected with a chilled water return pipe of the indoor unit of the split type air-cooled chiller unit; the cooling water flows in the secondary side of the plate heat exchanger, the secondary side outlet of the heat exchanger unit is connected with the inlet of the medical equipment through the cooling water supply pipeline via the electric three-way valve (7-3), the water tank (7-4) and the water pump (7-5), and the outlet of the medical equipment is connected with the secondary side inlet of the plate heat exchanger through the cooling water return pipeline.
4. The medical efficient split cooling water system as claimed in claim 1, wherein a PPR pipe is adopted as a chilled water supply and return pipeline connected between the indoor unit of the split air-cooled chiller and the heat exchanger unit, and a water filter (5) and a flowmeter (6) are arranged on the water supply pipeline.
5. The medical efficient split cooling water system according to claim 2, wherein the split air-cooled chiller controller (2-1) is respectively connected with a plate exchange anti-freezing temperature sensor (ST 1), a water supply temperature sensor (ST 2), a condensing pressure sensor (SP 1) of a refrigerating system a and a condensing pressure sensor (SP 2) of a refrigerating system b; simultaneously, the split type air-cooled chiller controller (2-1) is connected with a compressor (2-5 a) of a refrigerating system a, a compressor (2-5 b) of a refrigerating system b, an expansion valve (2-6 a) of the refrigerating system a, an expansion valve (2-6 b) of the refrigerating system b, a condensing fan (1-2 a) of the refrigerating system a, a condensing fan (1-2 b) of the refrigerating system b and a built-in water pump (2-2).
6. A medical efficient split cooling water system according to claim 3, characterized in that said heat exchanger unit controller (7-1) comprises: the system comprises a heat exchanger unit water supply temperature sensor ST3 arranged on a water supply main, a helium press water return temperature sensor ST4 arranged on a helium press water return branch pipe, a flow temperature sensor (7-8) arranged on a return water pipeline of an RFPA (radio frequency power amplifier), a flow temperature sensor (7-9) arranged on a return water pipeline of a GC (gas phase) gradient coil, a flow temperature sensor (7-11) arranged on a return water pipeline of a GPA (gas phase) gradient power amplifier, a flow meter (7-7) of a machine room air conditioner arranged on a machine room air conditioner water supply pipeline, and a flow meter (7-10) of the helium press arranged on the helium press water supply pipeline, wherein the seven sensors are analog quantity inputs; controlling a water pump of the heat exchange unit to output switching value, and controlling the start and stop of the water pump; and controlling the electric three-way valve to output analog quantity, and controlling the opening of the electric three-way valve to control the temperature of secondary side water supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320675423.8U CN219531249U (en) | 2023-03-30 | 2023-03-30 | Medical efficient split cooling water system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320675423.8U CN219531249U (en) | 2023-03-30 | 2023-03-30 | Medical efficient split cooling water system |
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| CN219531249U true CN219531249U (en) | 2023-08-15 |
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| CN202320675423.8U Active CN219531249U (en) | 2023-03-30 | 2023-03-30 | Medical efficient split cooling water system |
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| CN (1) | CN219531249U (en) |
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