CN111609580A - A kind of cabinet cooling system and method using carbon dioxide as working fluid - Google Patents
A kind of cabinet cooling system and method using carbon dioxide as working fluid Download PDFInfo
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 144
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 109
- 238000001816 cooling Methods 0.000 title claims abstract description 48
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000012530 fluid Substances 0.000 title description 7
- 238000005057 refrigeration Methods 0.000 claims abstract description 29
- 238000010992 reflux Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 2
- 230000006378 damage Effects 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- MEXUFEQDCXZEON-UHFFFAOYSA-N bromochlorodifluoromethane Chemical group FC(F)(Cl)Br MEXUFEQDCXZEON-UHFFFAOYSA-N 0.000 description 1
- RJCQBQGAPKAMLL-UHFFFAOYSA-N bromotrifluoromethane Chemical compound FC(F)(F)Br RJCQBQGAPKAMLL-UHFFFAOYSA-N 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- KVBKAPANDHPRDG-UHFFFAOYSA-N dibromotetrafluoroethane Chemical compound FC(F)(Br)C(F)(F)Br KVBKAPANDHPRDG-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- GTLACDSXYULKMZ-UHFFFAOYSA-N pentafluoroethane Chemical compound FC(F)C(F)(F)F GTLACDSXYULKMZ-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20718—Forced ventilation of a gaseous coolant
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- Microelectronics & Electronic Packaging (AREA)
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Abstract
本发明涉及一种以二氧化碳为工质的机柜冷却***及方法，其特征在于：包括CO2制冷机组、CO2供给管路、机柜、CO2回流管路及CO2存储罐，所述机柜包括柜体及设置在柜体上的CO2进口、CO2出口、CO2换热管路及风扇，所述CO2制冷机组通过CO2供给管路连接至所述柜体的CO2进口，所述CO2进口连接至所述CO2换热管路一端，所述CO2换热管路另一端连接至所述CO2出口，所述柜体的CO2出口通过CO2回流管路连接至所述CO2存储罐，所述CO2存储罐通过CO2回流管路连接至所述CO2制冷机组。本发明结构设计科学合理，具备制冷灭火功能，能够实现机柜的高效、安全冷却，保证机柜的使用安全性能。
The invention relates to a cabinet cooling system and method using carbon dioxide as a working medium, which is characterized by comprising a CO 2 refrigeration unit, a CO 2 supply pipeline, a cabinet, a CO 2 return pipeline and a CO 2 storage tank, and the cabinet comprises The cabinet body and the CO 2 inlet, CO 2 outlet, CO 2 heat exchange pipeline and fan arranged on the cabinet body, the CO 2 refrigeration unit is connected to the CO 2 inlet of the cabinet body through the CO 2 supply pipeline, so The CO2 inlet is connected to one end of the CO2 heat exchange pipeline, the other end of the CO2 heat exchange pipeline is connected to the CO2 outlet, and the CO2 outlet of the cabinet is connected to the CO2 return pipeline to The CO2 storage tank, the CO2 storage tank is connected to the CO2 refrigeration unit through a CO2 return line. The invention has scientific and reasonable structural design, has the function of refrigeration and fire extinguishing, can realize efficient and safe cooling of the cabinet, and ensure the safe performance of the cabinet.
Description
技术领域technical field
本发明属于制冷冷却技术领域，涉及机柜冷却，特别涉及一种以二氧化碳为工质的机柜冷却***及方法。The invention belongs to the technical field of refrigeration and cooling, relates to cabinet cooling, and particularly relates to a cabinet cooling system and method using carbon dioxide as a working fluid.
背景技术Background technique
随着国家大数据战略、互联网+战略实施，国家信息化水平不断提高，图像识别、大数据展示等新业务新应用带来数据业务的快速增长。而数据中心作为必要的基础设施逐渐向大规模、高密度方向发展，这带来了两个问题：With the implementation of the national big data strategy and the Internet + strategy, the national informatization level has been continuously improved, and new business and new applications such as image recognition and big data display have brought about the rapid growth of data business. As a necessary infrastructure, data centers are gradually developing towards large-scale and high-density, which brings two problems:
一是伴随着计算机和服务器性能的提高，设备功率也越来越大，从而导致计算机和通信设备在工作的过程中会产生更多的热量。若设备散热较差,则可能导致***无法稳定运行，甚至可能导致***崩溃。机房属于动态密集型热源，大规模高密度的布置会进一步增大散热压力，因此，要求制冷***能够及时有效地将产生的热量散发出去，且尽可能地高效制冷，减小能量消耗。First, along with the improvement of the performance of computers and servers, the power of the equipment is also increasing, which causes the computers and communication equipment to generate more heat in the process of working. If the device has poor heat dissipation, the system may not run stably, and may even cause the system to crash. The computer room is a dynamic and intensive heat source, and the large-scale and high-density layout will further increase the heat dissipation pressure. Therefore, the cooling system is required to be able to dissipate the generated heat in a timely and effective manner, and to cool as efficiently as possible to reduce energy consumption.
二是由于机柜布置密集，机柜的防火工作尤为重要，一旦发生火灾，不仅会导致硬件损坏，还会导致***的瘫痪，数据的丢失等严重后果，因此机房也需要高效且损失小的灭火方式。Second, due to the dense arrangement of cabinets, the fire prevention of cabinets is particularly important. Once a fire occurs, it will not only cause hardware damage, but also lead to system paralysis and data loss.
传统的数据机房冷却通常采用机房级的冷却，有研究者采用热管换热机组，将整个机房的温度和湿度以及洁净度保持恒定。这种冷却形式需要消耗大量的能量使机房整体冷却效率较低，且容易出现局部热岛现象，从而引发事故。The traditional data room cooling usually uses room-level cooling. Some researchers use a heat pipe heat exchange unit to keep the temperature, humidity and cleanliness of the entire data room constant. This form of cooling needs to consume a lot of energy, which makes the overall cooling efficiency of the machine room low, and is prone to local heat island phenomenon, thus causing accidents.
对此，有研究者改变了机房空调送风方式，但未从根本上解决问题。目前也有许多数据机房对机柜直接冷却，有专利使用货柜式数据中心或在终端设置多个制冷单元分别制冷实现了制冷量的调节，提高了制冷效率，提高了数据中心运行的安全性，有效减少了制冷能耗。但以上的机柜级制冷形式，采用的制冷剂通常为R134a、R22、R410a或R407c等，这些制冷剂多数具有毒性，一旦泄露会造成人员伤亡，和臭氧层的破坏，加剧温室效应。还有一些机柜级冷却将水作为循环工质，而水一旦泄露，会造成机房短路，造成巨大破坏。In this regard, some researchers have changed the air supply method of the computer room air conditioner, but have not fundamentally solved the problem. At present, there are also many data rooms that directly cool the cabinets. There are patents that use a container-type data center or set up multiple cooling units at the terminal to adjust the cooling capacity, improve the cooling efficiency, improve the safety of the data center operation, and effectively reduce the cooling energy consumption. However, in the above cabinet-level refrigeration forms, the refrigerants used are usually R134a, R22, R410a or R407c, etc. Most of these refrigerants are toxic. Once leaked, it will cause casualties, damage the ozone layer, and aggravate the greenhouse effect. There are also some cabinet-level cooling systems that use water as a circulating working medium, and once the water leaks, it will cause a short circuit in the equipment room and cause huge damage.
此外，数据机房的灭火方式也至关重要，随着数据中心向高密度、高运算速度的方向发展，机柜的布置越来越密集，给灭火工作带来困难。In addition, the fire extinguishing method of the data room is also very important. With the development of data centers in the direction of high density and high computing speed, the arrangement of cabinets is becoming more and more dense, which brings difficulties to fire fighting work.
一是电子设备对灭火剂的要求较高。若采用水作为灭火剂，会导致电子设备短路而损坏。通常选用磷酸铵盐干粉灭火器、碳酸氢钠干粉灭火器或二氧化碳灭火器对数据机房灭火，而干粉器灭火后残留的粉末状覆盖物会对电子元器件则有一定的腐蚀作用和粉尘污染，而且也还很难清洁。若采用气体灭火***对数据机房灭火，气体灭火***主要使用的灭火剂为二氟-氯-溴甲烷、三氟溴甲烷或者1,2-二溴四氟乙烷，此类物质常温下为绝缘性气体，当暴露于火焰高温受热时，灭火剂会发生裂解反应生成高反应活性的自由基，这些自由基会打断燃烧链式反应进而达到灭火的目的。然而此类化合物会严重破坏臭氧层，被逐步禁用。First, electronic equipment has higher requirements for fire extinguishing agents. If water is used as a fire extinguishing agent, it will cause short circuit and damage to electronic equipment. Usually, ammonium phosphate dry powder fire extinguisher, sodium bicarbonate dry powder fire extinguisher or carbon dioxide fire extinguisher is used to put out the fire in the data room, and the powdery covering remaining after the fire extinguishing of the dry powder fire extinguisher will have a certain corrosive effect on electronic components and dust pollution, and also Difficult to clean. If a gas fire extinguishing system is used to extinguish the data room, the main fire extinguishing agent used in the gas fire extinguishing system is difluoro-chloro-bromomethane, trifluorobromomethane or 1,2-dibromotetrafluoroethane, which are insulating gases at room temperature , When exposed to high temperature flames and heat, the fire extinguishing agent will undergo a cracking reaction to generate highly reactive free radicals, these free radicals will interrupt the combustion chain reaction and achieve the purpose of fire extinguishing. However, such compounds can seriously damage the ozone layer and are gradually banned.
二是数据中心内处理器布置密集，给灭火设备的布置和灭火人员的行动带来了空间上的限制。若采用灭火器由人员手动操作灭火，由于机柜密集布置灭火人员无法接近起火点，甚至密集布置的机柜会给灭火人员的生命安全带来威胁。若采用水雾灭火***或气体灭火***，则需要在数据中心内额外布置灭火装置、灭火剂管道等设备，占用大量空间且整体成本很高。The second is the dense arrangement of processors in the data center, which brings space constraints to the arrangement of fire-fighting equipment and the actions of fire-fighting personnel. If the fire extinguisher is manually operated by personnel, the fire extinguishing personnel cannot approach the fire point due to the dense arrangement of cabinets, and even the densely arranged cabinets will pose a threat to the life safety of the fire extinguishing personnel. If a water mist fire extinguishing system or a gas fire extinguishing system is used, additional fire extinguishing devices, fire extinguishing agent pipes and other equipment need to be arranged in the data center, which takes up a lot of space and the overall cost is high.
三是数据中心内所布置的处理器价格较高，一旦起火需要迅速针对起火点灭火，保证灭火迅速、精准，将损失降到最小。若人工灭火，从发现火情到开始灭火，会耗费十几到几十分钟的时间，增加损失，且人工灭火难以找到并针对起火点精准灭火。若采用水雾灭火，水雾在空气中扩散速度较慢，难以进入机柜而导致对其内部设备的保护性欠佳，且无法实现单个机柜实现针对性灭火。采用七氟丙烷、五氟乙烷或混合气体能够及时有效地灭火，但需要额外铺设灭火剂管道等设备，使用时需要密封整个空间无法实现单个机柜实现针对性灭火。Third, the processors arranged in the data center are expensive. Once a fire occurs, it is necessary to quickly put out the fire to ensure rapid and accurate fire extinguishing and minimize losses. If the fire is manually extinguished, it will take ten to dozens of minutes from the discovery of the fire to the start of the fire, which will increase the loss, and it is difficult to find and extinguish the fire accurately for the fire point. If water mist is used to extinguish the fire, the water mist spreads slowly in the air, and it is difficult to enter the cabinet, resulting in poor protection of its internal equipment, and it is impossible to achieve targeted fire extinguishing for a single cabinet. Heptafluoropropane, pentafluoroethane or mixed gas can be used to extinguish the fire in a timely and effective manner, but additional equipment such as fire extinguishing agent pipelines need to be laid.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于针对现有技术的缺陷和不足，提供一种以二氧化碳为工质的机柜冷却***及方法，具备制冷灭火功能，能够实现机柜的高效、安全冷却。The purpose of the present invention is to provide a cabinet cooling system and method using carbon dioxide as a working medium, which has the function of refrigeration and fire extinguishing, and can realize efficient and safe cooling of the cabinet.
本发明解决其技术问题是通过以下技术方案实现的：The present invention solves its technical problem and realizes through the following technical solutions:
一种以二氧化碳为工质的机柜冷却***，其特征在于：包括CO2制冷机组、CO2供给管路、机柜、CO2回流管路及CO2存储罐，所述机柜包括柜体及设置在柜体上的CO2进口、CO2出口、CO2换热管路及风扇，所述CO2制冷机组通过CO2供给管路连接至所述柜体的CO2进口，所述CO2进口连接至所述CO2换热管路一端，所述CO2换热管路另一端连接至所述CO2出口，所述柜体的CO2出口通过CO2回流管路连接至所述CO2存储罐，所述CO2存储罐通过CO2回流管路连接至所述CO2制冷机组。A cabinet cooling system using carbon dioxide as a working medium is characterized in that it includes a CO 2 refrigeration unit, a CO 2 supply pipeline, a cabinet, a CO 2 return pipeline and a CO 2 storage tank, and the cabinet includes a cabinet body and a The CO 2 inlet, CO 2 outlet, CO 2 heat exchange pipeline and fan on the cabinet, the CO 2 refrigeration unit is connected to the CO 2 inlet of the cabinet through the CO 2 supply pipeline, and the CO 2 inlet is connected To one end of the CO 2 heat exchange pipeline, the other end of the CO 2 heat exchange pipeline is connected to the CO 2 outlet, and the CO 2 outlet of the cabinet is connected to the CO 2 storage through a CO 2 return pipeline tank, the CO2 storage tank is connected to the CO2 refrigeration unit through a CO2 return line.
而且，所述CO2存储罐上设置有阀门。Moreover, the CO2 storage tank is provided with a valve.
而且，所述机柜的柜体上设置有CO2喷嘴，所述CO2喷嘴连接至所述CO2供给管路。Moreover, the cabinet body of the cabinet is provided with a CO 2 nozzle, and the CO 2 nozzle is connected to the CO 2 supply pipeline.
而且，所述风扇的风量大小可调节，所述CO2喷嘴的开闭可调节。Moreover, the air volume of the fan can be adjusted, and the opening and closing of the CO 2 nozzle can be adjusted.
一种以二氧化碳为工质的机柜冷却方法，其特征在于：所述方法的步骤为：A cabinet cooling method using carbon dioxide as a working medium, characterized in that: the steps of the method are:
S1、CO2供给：CO2制冷机组调节CO2供给管路的压力为8～12MPa，温度为2～7℃，使其成为超临界CO2，并将该超临界CO2通过CO2供给管输入到机柜内；S1, CO 2 supply: The CO 2 refrigeration unit adjusts the pressure of the CO 2 supply pipeline to 8-12MPa and the temperature to 2-7 ℃ to make it supercritical CO 2 , and pass the supercritical CO 2 through the CO 2 supply pipe input into the cabinet;
S2、冷却换热：CO2供给管路内的超临界CO2通过CO2进口进入机柜内的CO2换热管路，风扇开启，机柜内的空气流经CO2换热管路外部被冷却，并将机柜内产生的热量带走，同时通过调节风扇的风量改变***的制冷量；S2. Cooling and heat exchange: the supercritical CO 2 in the CO 2 supply pipeline enters the CO 2 heat exchange pipeline in the cabinet through the CO 2 inlet, the fan is turned on, and the air in the cabinet flows through the outside of the CO 2 heat exchange pipeline to be cooled , and take away the heat generated in the cabinet, and at the same time change the cooling capacity of the system by adjusting the air volume of the fan;
S3、CO2回流：与空气换热升温后的CO2经CO2出口进入CO2回流管路，同时CO2存储罐向CO2回流管路内充注CO2确保CO2回流管路内CO2压力为8～12MPa，CO2回流管路内的CO2最终进入CO2制冷机组；同时，CO2制冷机组能够根据需要灵活调节CO2的流量，改变工质的冷却能力。S3, CO 2 return: CO 2 after heat exchange with air and heated up enters the CO 2 return line through the CO 2 outlet, and at the same time the CO 2 storage tank fills the CO 2 return line with CO 2 to ensure that
本发明的优点和有益效果为：The advantages and beneficial effects of the present invention are:
1、本发明以二氧化碳为工质的机柜冷却***，二氧化碳在自然界天然存在，臭氧破坏潜能值和全球变暖潜能值几乎为零，且单位体积制冷量大，布置在机柜内部可以减小制冷部分所需体积。1. The cabinet cooling system of the present invention uses carbon dioxide as the working medium. Carbon dioxide exists naturally in nature, the ozone destruction potential value and the global warming potential value are almost zero, and the cooling capacity per unit volume is large, and the cooling part can be reduced by arranging inside the cabinet. required volume.
2、本发明以二氧化碳为工质的机柜冷却***，相较于额外布置灭火管路的数据中心，采用二氧化碳作为制冷工质同时用于进行灭火，不需要额外铺设灭火剂管道，即可以节省消防投资，又可用于减小二者占用的体积，减小机柜所占用的空间，有助于建设更加密集和高效的机房。将机柜制冷与灭火相结合，即避免了人工操作灭火器的危险和低效，又规避气体灭火的高投资，既实现高效运行又减小投资。2. The cabinet cooling system of the present invention uses carbon dioxide as the working medium. Compared with the data center with additional fire extinguishing pipelines, carbon dioxide is used as the refrigeration working medium for fire extinguishing at the same time, and there is no need to lay additional fire extinguishing agent pipes, which can save fire fighting. The investment can also be used to reduce the volume occupied by the two, reduce the space occupied by the cabinet, and help build a more dense and efficient computer room. The combination of cabinet refrigeration and fire extinguishing not only avoids the danger and inefficiency of manual operation of fire extinguishers, but also avoids the high investment of gas fire extinguishing, which not only realizes efficient operation but also reduces investment.
3、本发明以二氧化碳为工质的机柜冷却方法，采用制冷管路内的二氧化碳进行灭火，在发生火灾时，无需人员进入火场，保证了灭火人员的生命安全，二氧化碳管路在机柜内部释放二氧化碳进行灭火，可直接在起火点进行灭火，可实现单机柜精准灭火。3. The cooling method of the cabinet using carbon dioxide as the working medium of the present invention uses carbon dioxide in the refrigeration pipeline to extinguish the fire. When a fire occurs, no personnel need to enter the fire field, which ensures the safety of the firefighters, and the carbon dioxide pipeline releases carbon dioxide inside the cabinet. For fire extinguishing, the fire can be extinguished directly at the fire point, which can achieve precise fire extinguishing of a single cabinet.
4、本发明设计科学合理，具备制冷灭火功能，能够实现机柜的高效、安全冷却，保证机柜的使用安全性。4. The present invention has a scientific and reasonable design, has the function of refrigeration and fire extinguishing, can achieve efficient and safe cooling of the cabinet, and ensure the safety of the cabinet.
附图说明Description of drawings
图1为本发明的结构示意图；Fig. 1 is the structural representation of the present invention;
图2为本发明机柜的结构示意图；Fig. 2 is the structural schematic diagram of the cabinet of the present invention;
图3为本发明机柜的左视图；Fig. 3 is the left side view of the cabinet of the present invention;
图4为本发明机柜的右视图；Fig. 4 is the right side view of the cabinet of the present invention;
图5为图4的A-A向剖视图。FIG. 5 is a cross-sectional view taken along the line A-A in FIG. 4 .
附图标记说明Description of reference numerals
1-CO2制冷机组、2-CO2供给管路、3-机柜、4-CO2回流管路、5-阀门、6-CO2存储罐、7-CO2进口、8-CO2出口、9-柜体、10-CO2工质换热管路、11-风扇、12-CO2喷嘴。1- CO2 refrigeration unit, 2- CO2 supply line, 3-cabinet, 4- CO2 return line, 5-valve, 6- CO2 storage tank, 7- CO2 inlet, 8- CO2 outlet, 9-Cabinet, 10- CO2 working fluid heat exchange pipeline, 11-Fan, 12- CO2 nozzle.
具体实施方式Detailed ways
下面通过具体实施例对本发明作进一步详述，以下实施例只是描述性的，不是限定性的，不能以此限定本发明的保护范围。The present invention will be further described in detail below through specific examples. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.
一种以二氧化碳为工质的机柜冷却***，其创新之处在于：包括CO2制冷机组1、CO2供给管路2、机柜3、CO2回流管路4及CO2存储罐6，机柜包括柜体9及设置在柜体上的CO2进口7、CO2出口8、CO2换热管路10及风扇11，CO2制冷机组通过CO2供给管路连接至柜体的CO2进口，CO2进口连接至CO2换热管路一端，CO2换热管路另一端连接至CO2出口，柜体的CO2出口通过CO2回流管路连接至CO2存储罐，CO2存储罐通过CO2回流管路连接至CO2制冷机组，二氧化碳在自然界天然存在，臭氧破坏潜能值和全球变暖潜能值几乎为零，且单位体积制冷量大，布置在机柜内部可以减小制冷部分所需体积。A cabinet cooling system using carbon dioxide as a working medium is innovative in that it includes a CO 2 refrigeration unit 1, a CO 2 supply pipeline 2, a
CO2存储罐上设置有阀门5，可通过阀门实时控制CO2存储罐向CO2回流管路中补充CO2的供给量，保证制冷效果。The CO 2 storage tank is provided with a
机柜的柜体上设置有CO2喷嘴12，CO2喷嘴连接至CO2供给管路，能够在机柜起火时将CO2喷向机柜内部，起到降温和隔绝氧气的作用。The cabinet body of the cabinet is provided with a CO2
风扇的风量大小可调节，CO2喷嘴的开闭可调节，可以实时调节控制***的制冷量，保证机柜的高效制冷，确保机柜的运行安全性能。The air volume of the fan can be adjusted, and the opening and closing of the CO 2 nozzle can be adjusted, which can adjust the cooling capacity of the control system in real time, ensure the efficient cooling of the cabinet, and ensure the safe operation of the cabinet.
一种以二氧化碳为工质的机柜冷却方法，其特征在于：所述方法的步骤为：A cabinet cooling method using carbon dioxide as a working medium, characterized in that: the steps of the method are:
S1、CO2供给：CO2制冷机组调节CO2供给管路的压力为8～12MPa，温度为2～7℃，使其成为超临界CO2，并将该超临界CO2通过CO2供给管输入到机柜内；S1, CO 2 supply: The CO 2 refrigeration unit adjusts the pressure of the CO 2 supply pipeline to 8-12MPa and the temperature to 2-7 ℃ to make it supercritical CO 2 , and pass the supercritical CO 2 through the CO 2 supply pipe input into the cabinet;
S2、冷却换热：CO2供给管路内的超临界CO2通过CO2进口进入机柜内的CO2换热管路，风扇开启，机柜内的空气流经CO2换热管路外部被冷却，并将机柜内产生的热量带走，同时通过调节风扇的风量改变***的制冷量；S2. Cooling and heat exchange: the supercritical CO 2 in the CO 2 supply pipeline enters the CO 2 heat exchange pipeline in the cabinet through the CO 2 inlet, the fan is turned on, and the air in the cabinet flows through the outside of the CO 2 heat exchange pipeline to be cooled , and take away the heat generated in the cabinet, and at the same time change the cooling capacity of the system by adjusting the air volume of the fan;
S3、CO2回流：与空气换热升温后的CO2经CO2出口进入CO2回流管路，同时CO2存储罐向CO2回流管路内充注CO2确保CO2回流管路内CO2压力为8～12MPa，CO2回流管路内的CO2最终进入CO2制冷机组；同时，CO2制冷机组能够根据需要灵活调节CO2的流量，改变工质的冷却能力。S3, CO 2 return: CO 2 after heat exchange with air and heated up enters the CO 2 return line through the CO 2 outlet, and at the same time the CO 2 storage tank fills the CO 2 return line with CO 2 to ensure that
本发明的工作原理为：The working principle of the present invention is:
CO2制冷机组保持通往CO2供给管路的CO2工质的压力在8～12MPa范围内，温度在2～7℃范围内，确保其处于超临界状态；The CO2 refrigeration unit keeps the pressure of the CO2 working fluid leading to the CO2 supply pipeline in the range of 8-12MPa and the temperature in the range of 2-7℃ to ensure that it is in a supercritical state;
CO2供给管路内的超临界CO2通过CO2进口进入机柜内的CO2换热管路，当风扇开启时空气流经CO2换热管路外部被冷却，之后将机柜内产生的热量带走，通过调节风扇的风量可改变***的制冷量；The supercritical CO2 in the CO2 supply line enters the CO2 heat exchange line in the cabinet through the CO2 inlet. When the fan is turned on, the air flows through the outside of the CO2 heat exchange line to be cooled, and then the heat generated in the cabinet is carried The cooling capacity of the system can be changed by adjusting the air volume of the fan;
与空气换热升温后的CO2经CO2出口进入CO2回流管路，当CO2回流管路内CO2工质压力低于8～12MPa时阀门开启，由CO2存储罐向CO2回流管路内充注CO2确保压力在8～12MPa范围内；CO2回流管路内的工质最终进入CO2制冷机组1；此外，CO2制冷机组1能够根据需要灵活调节工质的流量，改变工质的冷却能力；The CO 2 heated up by heat exchange with the air enters the CO 2 return line through the CO 2 outlet. When the CO 2 working fluid pressure in the CO 2 return line is lower than 8-12MPa, the valve is opened, and the CO 2 storage tank returns to the CO 2 The pipeline is filled with CO 2 to ensure that the pressure is in the range of 8-12MPa; the working medium in the CO 2 return pipeline finally enters the CO 2 refrigeration unit 1; in addition, the CO 2 refrigeration unit 1 can flexibly adjust the flow of the working fluid Change the cooling capacity of the working fluid;
机柜内设置有CO2喷嘴，能够在机柜起火时将CO2喷向机柜内部，起到降温和隔绝氧气的作用，将高压的超临界二氧化碳释放到常压的空气中，二氧化碳会进入两相区呈现低温气液两相状态，低温的液态二氧化碳喷射到机柜上能够强力冷却机柜，且不会对机柜造成化学性伤害。The cabinet is equipped with a CO 2 nozzle, which can spray CO 2 into the cabinet when the cabinet catches fire, which can cool down and isolate oxygen, release high-pressure supercritical carbon dioxide into the normal pressure air, and the carbon dioxide will enter the two-phase area. It presents a low-temperature gas-liquid two-phase state, and the low-temperature liquid carbon dioxide sprayed onto the cabinet can cool the cabinet strongly without causing chemical damage to the cabinet.
尽管为说明目的公开了本发明的实施例和附图，但是本领域的技术人员可以理解：在不脱离本发明及所附权利要求的精神和范围内，各种替换、变化和修改都是可能的，因此，本发明的范围不局限于实施例和附图所公开的内容。Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.
Claims (5)
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