CN107246740A - New handpiece Water Chilling Units are used in medical nuclear magnetic resonance cooling - Google Patents
New handpiece Water Chilling Units are used in medical nuclear magnetic resonance cooling Download PDFInfo
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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Abstract
Description
技术领域technical field
本发明涉及一种医用核磁共振冷却用新型冷水机组，用于医用核磁共振冷却。属于工业节能技术领域。The invention relates to a novel chiller for medical nuclear magnetic resonance cooling, which is used for medical nuclear magnetic resonance cooling. It belongs to the technical field of industrial energy saving.
背景技术Background technique
冷却系统是核磁共振系统关键的外围设备之一，其能否正常运行直接关系到核磁共振能否正常工作。冷却系统在核磁共振系统中有两个作用：一是对梯度线圈进行冷却；二是对液氦压缩机进行冷却。The cooling system is one of the key peripheral equipment of the NMR system, and its normal operation is directly related to the normal operation of the NMR. The cooling system has two functions in the NMR system: one is to cool the gradient coil; the other is to cool the liquid helium compressor.
现有的医用核磁共振冷却方法，一般采用蒸气压缩、散热、节流、吸热方式降低循环冷水的温度。其中，外环境温度较低的冬季也采用此方法，电能消耗大。Existing medical nuclear magnetic resonance cooling methods generally use vapor compression, heat dissipation, throttling, and heat absorption to reduce the temperature of circulating cold water. Among them, this method is also adopted in winter when the external environment temperature is low, and the power consumption is large.
发明内容Contents of the invention
本发明的目的在于克服上述不足，提供了一种医用核磁共振冷却用新型冷水机组。The object of the present invention is to overcome above-mentioned deficiency, provides a kind of novel chiller for medical nuclear magnetic resonance cooling.
本发明的目的是这样实现的：The purpose of the present invention is achieved like this:
一种医用核磁共振冷却用新型冷水机组，其特点是：它包括制冷压缩机、油气分离器、气液分离器、储液器、干燥过滤器、视液镜、电子膨胀阀、板式换热器、冷凝器、换热风机、热交换器、自动排气阀、第五电动二通球阀、第六电动二通球阀和循环冷水泵，所述制冷压缩机的排气口接入油气分离器的进口，油气分离器的出口接入冷凝器的进口，冷凝器的出口接入储液器的进口，储液器的出口接入干燥过滤器的进口，干燥过滤器的出口接入视液镜的进口，视液镜的出口接入电子膨胀阀的进口，电子膨胀阀的出口接入板式换热器一侧的底部换热接口，板式换热器的同侧上部换热接口接入气液分离器的进口，气液分离器的出口接入制冷压缩机的吸气口，所述循环冷水泵的循环冷水泵出口分成两路，其中一路接入板式换热器另一侧上部换热管路接口，连接管路上设置有第二电动二通球阀，板式换热器同侧底部接口连接冷却后的供水管，连接管路上设置有第一电动二通球阀；循环冷水泵出口的另一路接入热交换器的内侧水管路，连接管路上设置有第四电动二通球阀，所述第五电动二通球阀的一端接口接入此连接管路，另一端接口用于排放热交换器内的水，热交换器的外侧水管路连接冷却后的供水管，连接管路上设置有第三电动二通球阀，所述第六电动二通球阀的一端接口接入此连接管路，另一端接口用于排放热交换器内的水。A new chiller for medical nuclear magnetic resonance cooling, which is characterized in that it includes a refrigeration compressor, an oil-gas separator, a gas-liquid separator, a liquid receiver, a dry filter, a sight glass, an electronic expansion valve, and a plate heat exchanger , condenser, heat exchange fan, heat exchanger, automatic exhaust valve, fifth electric two-way ball valve, sixth electric two-way ball valve and circulating cold water pump, the exhaust port of the refrigeration compressor is connected to the oil-gas separator Inlet, the outlet of the oil and gas separator is connected to the inlet of the condenser, the outlet of the condenser is connected to the inlet of the liquid receiver, the outlet of the liquid reservoir is connected to the inlet of the dry filter, and the outlet of the dry filter is connected to the sight glass The inlet and the outlet of the sight glass are connected to the inlet of the electronic expansion valve, the outlet of the electronic expansion valve is connected to the bottom heat exchange interface on one side of the plate heat exchanger, and the upper heat exchange interface on the same side of the plate heat exchanger is connected to the gas-liquid separation The inlet of the gas-liquid separator, the outlet of the gas-liquid separator is connected to the suction port of the refrigeration compressor, and the outlet of the circulating cold water pump of the circulating cold water pump is divided into two paths, one of which is connected to the upper heat exchange pipeline on the other side of the plate heat exchanger Interface, the second electric two-way ball valve is set on the connecting pipeline, the bottom interface of the same side of the plate heat exchanger is connected to the cooled water supply pipe, and the first electric two-way ball valve is set on the connecting pipeline; The inner water pipeline of the heat exchanger is provided with a fourth electric two-way ball valve on the connecting pipeline. One end of the fifth electric two-way ball valve is connected to the connecting pipeline, and the other end is used to discharge the water in the heat exchanger. , the outer water pipe of the heat exchanger is connected to the cooled water supply pipe, and a third electric two-way ball valve is arranged on the connecting pipe, one end of the sixth electric two-way ball valve is connected to the connecting pipe, and the other end is used for Drain the water from the heat exchanger.
本发明一种医用核磁共振冷却用新型冷水机组，其热交换器位于冷凝器的内侧，所述热交换器上设置有自动排气阀，所述换热风机位于热交换器的上方。The present invention is a novel chiller for medical nuclear magnetic resonance cooling. The heat exchanger is located inside the condenser, the heat exchanger is provided with an automatic exhaust valve, and the heat exchange fan is located above the heat exchanger.
与现有技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:
本发明一种医用核磁共振冷却用新型冷水机组，在环境温度低于13℃时，可以停用制冷压缩机，直接吸收外界空气中的冷量进行换热，此方式耗电量小，能效比高且适用范围广。The present invention is a novel chiller for medical nuclear magnetic resonance cooling. When the ambient temperature is lower than 13°C, the refrigeration compressor can be stopped, and the cold energy in the external air can be directly absorbed for heat exchange. This method consumes less power and has a higher energy efficiency ratio. High and wide application range.
附图说明Description of drawings
图1为本发明一种医用核磁共振冷却用新型冷水机组的示意图。Fig. 1 is a schematic diagram of a novel chiller for medical nuclear magnetic resonance cooling according to the present invention.
图中：In the picture:
制冷压缩机1，refrigeration compressor 1,
排气口1.1，Exhaust port 1.1,
吸气口1.2，Suction port 1.2,
油气分离器2，Oil and gas separator 2,
气液分离器3，Gas-liquid separator 3,
储液器4，reservoir 4,
干燥过滤器5，filter drier 5,
视液镜6，sight glass 6,
电子膨胀阀7，Electronic expansion valve 7,
板式换热器8，Plate heat exchanger 8,
冷凝器9，condenser 9,
换热风机10，heat exchange fan 10,
热交换器11，heat exchanger 11,
自动排气阀12，Automatic exhaust valve 12,
第一电动二通球阀13.1，The first electric two-way ball valve 13.1,
第二电动二通球阀13.2，The second electric two-way ball valve 13.2,
第三电动二通球阀13.3，The third electric two-way ball valve 13.3,
第四电动二通球阀13.4，The fourth electric two-way ball valve 13.4,
第五电动二通球阀13.5，The fifth electric two-way ball valve 13.5,
第六电动二通球阀13.6，The sixth electric two-way ball valve 13.6,
循环冷水泵14，Circulating cold water pump 14,
循环冷水泵出口14.1，Circulating cold water pump outlet 14.1,
循环冷水泵吸口14.2。The suction port of the circulating cold water pump is 14.2.
具体实施方式detailed description
参见图1，本发明涉及一种医用核磁共振冷却用新型冷水机组，它包括制冷压缩机1、油气分离器2、气液分离器3、储液器4、干燥过滤器5、视液镜6、电子膨胀阀7、板式换热器8、冷凝器9、换热风机10、热交换器11、自动排气阀12、第五电动二通球阀13.5、第六电动二通球阀13.6和循环冷水泵14。Referring to Fig. 1, the present invention relates to a novel chiller for medical nuclear magnetic resonance cooling, which includes a refrigeration compressor 1, an oil-gas separator 2, a gas-liquid separator 3, a liquid reservoir 4, a dry filter 5, and a sight glass 6 , electronic expansion valve 7, plate heat exchanger 8, condenser 9, heat exchange fan 10, heat exchanger 11, automatic exhaust valve 12, fifth electric two-way ball valve 13.5, sixth electric two-way ball valve 13.6 and circulating cooling water pump14.
所述制冷压缩机1的排气口1.1接入油气分离器2的进口，油气分离器2的出口接入冷凝器9的进口，冷凝器9的出口接入储液器4的进口，储液器4的出口接入干燥过滤器5的进口，干燥过滤器5的出口接入视液镜6的进口，视液镜6的出口接入电子膨胀阀7的进口，电子膨胀阀7的出口接入板式换热器8一侧的底部换热接口，板式换热器8的同侧上部换热接口接入气液分离器3的进口，气液分离器3的出口接入制冷压缩机1的吸气口1.2。The exhaust port 1.1 of the refrigeration compressor 1 is connected to the inlet of the oil-gas separator 2, the outlet of the oil-gas separator 2 is connected to the inlet of the condenser 9, and the outlet of the condenser 9 is connected to the inlet of the liquid storage device 4, and the liquid storage The outlet of the filter 4 is connected to the inlet of the dry filter 5, the outlet of the dry filter 5 is connected to the inlet of the sight glass 6, the outlet of the sight glass 6 is connected to the inlet of the electronic expansion valve 7, and the outlet of the electronic expansion valve 7 is connected to the Enter the bottom heat exchange interface on one side of the plate heat exchanger 8, the upper heat exchange interface on the same side of the plate heat exchanger 8 is connected to the inlet of the gas-liquid separator 3, and the outlet of the gas-liquid separator 3 is connected to the refrigeration compressor 1 Suction port 1.2.
所述循环冷水泵14的循环冷水泵出口14.1分成两路，其中一路接入板式换热器8另一侧上部换热管路接口，连接管路上设置有第二电动二通球阀13.2，板式换热器8同侧底部接口连接冷却后的供水管，连接管路上设置有第一电动二通球阀13.1；循环冷水泵出口14.1的另一路接入热交换器11的内侧水管路（放热），连接管路上设置有第四电动二通球阀13.4，所述第五电动二通球阀13.5的一端接口接入此连接管路，另一端接口用于排放热交换器11内的水，热交换器11的外侧水管路连接冷却后的供水管，连接管路上设置有第三电动二通球阀13.3，所述第六电动二通球阀13.6的一端接口接入此连接管路，另一端接口用于排放热交换器11内的水。The circulating cold water pump outlet 14.1 of the circulating cold water pump 14 is divided into two channels, one of which is connected to the upper heat exchange pipeline interface on the other side of the plate heat exchanger 8, and a second electric two-way ball valve 13.2 is arranged on the connecting pipeline. The bottom interface on the same side of the heater 8 is connected to the cooled water supply pipe, and the connecting pipe is provided with a first electric two-way ball valve 13.1; the other outlet of the circulating cold water pump 14.1 is connected to the inner water pipe of the heat exchanger 11 (heat release), The connecting pipeline is provided with a fourth electric two-way ball valve 13.4, one end of the fifth electric two-way ball valve 13.5 is connected to the connecting pipeline, and the other end is used to discharge the water in the heat exchanger 11. The heat exchanger 11 The outer water pipeline of the water pipe is connected to the cooled water supply pipe, and a third electric two-way ball valve 13.3 is arranged on the connecting pipeline, and one end interface of the sixth electric two-way ball valve 13.6 is connected to the connecting pipeline, and the other end interface is used to discharge heat. water in the exchanger 11.
所述热交换器11位于冷凝器9的内侧，所述热交换器11上设置有自动排气阀12，自动排气阀12用于排出热交换器11内部的空气，所述换热风机10位于热交换器11的上方。The heat exchanger 11 is located inside the condenser 9, the heat exchanger 11 is provided with an automatic exhaust valve 12, the automatic exhaust valve 12 is used to discharge the air inside the heat exchanger 11, and the heat exchange fan 10 Located above the heat exchanger 11.
工作原理：working principle:
①制冷流程一：当环境温度高于13℃时，开启第一电动二通球阀13.1、第二电动二通球阀13.2、第五电动二通球阀13.5和第六电动二通球阀13.6，关闭第三电动二通球阀13.3和第四电动二通球阀13.4，循环冷水泵14和制冷压缩机1正常运行。① Refrigeration process 1: When the ambient temperature is higher than 13°C, open the first electric two-way ball valve 13.1, the second electric two-way ball valve 13.2, the fifth electric two-way ball valve 13.5 and the sixth electric two-way ball valve 13.6, and close the third electric two-way ball valve. The electric two-way ball valve 13.3 and the fourth electric two-way ball valve 13.4, the circulating cold water pump 14 and the refrigeration compressor 1 operate normally.
从制冷压缩机1的排气口1.1出来的高温高压气体经油气分离器2（分离后的润滑油通过引管进入制冷压缩机1的低压腔）、油气分离器2进入冷凝器9，冷凝器9出来的高压液体经储液器4、干燥过滤器5、视液镜6和电子膨胀阀7后成为低压低温液体进入板式换热器8的换热侧、板式换热器8出来的低压气体经气液分离器3、吸气口1.2进入制冷压缩机1。The high-temperature and high-pressure gas from the exhaust port 1.1 of the refrigeration compressor 1 passes through the oil-gas separator 2 (the separated lubricating oil enters the low-pressure chamber of the refrigeration compressor 1 through the introduction pipe), and the oil-gas separator 2 enters the condenser 9, and the condenser The high-pressure liquid from 9 becomes low-pressure low-temperature liquid after passing through the liquid receiver 4, dry filter 5, sight glass 6 and electronic expansion valve 7, and enters the heat exchange side of the plate heat exchanger 8, and the low-pressure gas from the plate heat exchanger 8 Enter the refrigeration compressor 1 through the gas-liquid separator 3 and the suction port 1.2.
从循环冷水泵14的吸口14.2吸入来自医用核磁共振冷却后的高温水经第二电动二通球阀13.2进入板式换热器8的另一换热侧冷却降温，之后经第一电动二通球阀13.1进入冷却后的供水管；From the suction port 14.2 of the circulating cold water pump 14, the high-temperature water cooled by medical nuclear magnetic resonance is sucked into the other heat exchange side of the plate heat exchanger 8 through the second electric two-way ball valve 13.2 to cool down, and then passed through the first electric two-way ball valve 13.1 Enter the cooled water supply pipe;
其中，换热风机10根据放热后的制冷剂的液体温度来控制冷却风量。Wherein, the heat exchange fan 10 controls the cooling air volume according to the liquid temperature of the refrigerant after heat release.
②制冷流程二：当环境小于13℃时，开启第三电动二通球阀13.3和第四电动二通球阀13.4，关闭第一电动二通球阀13.1、第二电动二通球阀13.2、第五电动二通球阀13.5和第六电动二通球阀13.6，循环冷水泵14正常运行，制冷压缩机1关闭。② Refrigeration process 2: When the environment is lower than 13°C, open the third electric two-way ball valve 13.3 and the fourth electric two-way ball valve 13.4, close the first electric two-way ball valve 13.1, the second electric two-way ball valve 13.2, and the fifth electric two-way ball valve. Through the ball valve 13.5 and the sixth electric two-way ball valve 13.6, the circulating cold water pump 14 operates normally, and the refrigeration compressor 1 is closed.
循从环冷水泵14的吸口14.2吸入来自医用核磁共振冷却后的高温水经第四电动二通球阀13.4进入热交换器11内侧水管路放热，从热交换器11外侧水管路出来后经第三电动二通球阀13.3进入冷却后的供水管；其中，自动排气阀12自动排出热交换器11内部的空气。The suction port 14.2 of the circulating cold water pump 14 sucks the high-temperature water cooled by medical NMR through the fourth electric two-way ball valve 13.4 and enters the inner water pipeline of the heat exchanger 11 to release heat. Three electric two-way ball valves 13.3 enter the cooled water supply pipe; wherein, the automatic exhaust valve 12 automatically discharges the air inside the heat exchanger 11.
换热风机10根据放热后的水温来控制冷却风量。The heat exchange fan 10 controls the cooling air volume according to the water temperature after heat release.
当核磁共振机停用且环境温度低于0℃时，热交换器11内的水会达到冰点，为了设备的安全性，第三电动二通球阀13.3和第四电动二通球阀13.4关闭，第五电动二通球阀13.5和第六电动二通球阀13.6自动开启排尽热交换器内部的水。When the nuclear magnetic resonance machine is stopped and the ambient temperature is lower than 0°C, the water in the heat exchanger 11 will reach the freezing point. For the safety of the equipment, the third electric two-way ball valve 13.3 and the fourth electric two-way ball valve 13.4 are closed. Five electric two-way ball valves 13.5 and the sixth electric two-way ball valve 13.6 are automatically opened to exhaust the water inside the heat exchanger.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112051530A (en) * | 2020-08-18 | 2020-12-08 | 上海联影医疗科技股份有限公司 | Medical imaging apparatus system and cooling control method thereof |
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| CN205678804U (en) * | 2016-06-08 | 2016-11-09 | 烟台顿汉布什工业有限公司 | A kind of cooling by wind with natural cooling function and air-conditioner |
| CN206847106U (en) * | 2017-06-30 | 2018-01-05 | 江阴市人民医院 | The new handpiece Water Chilling Units of medical nuclear magnetic resonance cooling |
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| CN112051530A (en) * | 2020-08-18 | 2020-12-08 | 上海联影医疗科技股份有限公司 | Medical imaging apparatus system and cooling control method thereof |
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