One use and one standby supporting scene of precision chiller

The equipment supporting the precision chiller is often a high-value or important place
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In this case, in addition to ensuring the measurement and control of the four parameters of temperature, flow, pressure and conductivity, it is also necessary to ensure the long-term stability and maintainability of the precision chiller
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For example, in a large-scale accelerator project, in order to ensure uninterrupted start-up all year round and minimize the loss of machine time caused by operating failures, the requirement for cold water is to not stop the machine throughout the year, or to work continuously for more than 50,000 hours
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Therefore, in the design and manufacturing process of precision chillers, from component selection to production process control, to quality inspection and on-site installation, there are high standards to meet the various needs of customers
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Some important supporting scenarios, such as the cooling water supporting of the helium liquefaction system
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Because of the helium liquefaction process, it takes a long time from startup to the cooling of helium to below -270°C, usually two or three days
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If an important component of the entire liquefaction system fails and shuts down during the work process, the experiments relying on liquid helium will be interrupted or terminated early, resulting in a lot of unexpected losses
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Many components of the helium liquefaction system require uninterrupted cooling water to take away the heat generated during operation, so the requirements for cooling water are also very high, and a long-term stable supply of cooling water must be ensured
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Changliu Instrument provides customers with multiple sets of refrigeration systems with one use and one standby to meet the requirements of helium liquefaction, that is to say, one machine contains two or more sets of refrigeration cycle control systems, which are used as backup for each other.
Switch to use according to the time interval set by the user
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The multiple systems inside the one-use-one-preparation precision chiller can be switched without disturbance during operation.
When a system is found to be faulty, it will immediately switch to another system and generate an alarm at the same time
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It can also be transmitted to the host computer or control room through serial communication or local area network, which further ensures the continuous and safe operation of the entire cooling water system
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At present, there are several sets of refrigeration systems for one use and one standby, which have been running continuously for more than five years
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There are also some special application scenarios that require the chiller to have high temperature control accuracy, large instantaneous cooling capacity, and clean water
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For example, when it is used in large-scale laser systems and mobile lasers, there are strict constraints on the performance, volume, weight and interface size of the whole machine, which is a test for the design, manufacture and installation of the chiller
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At present, domestic precision chillers are not inferior to imported products, and can completely replace imports, which can fully meet the needs of various domestic high-precision applications
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In recent years, the market capacity of precision chillers has grown rapidly, the development space is large, the production volume and installed capacity have increased year by year, and they have played a good role in ensuring national key projects, key projects and key industrial fields
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