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Pump startup control method, device, system and refrigeration system

A technology of refrigeration system and start-up control, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of reducing pump start-up cavitation, large area of ​​pump cabinet, increasing investment, etc., to improve reliability, The effect of reducing shock and reducing the risk of cavitation

Active Publication Date: 2017-02-22
EMERSON NETWORK POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the pump system, the cavitation of the pump is reduced by using a liquid storage tank with a certain volume and a certain height, but this will cause the pump cabinet to occupy a larger area and increase the investment.
There is currently no other better way to reduce cavitation at pump startup

Method used

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  • Pump startup control method, device, system and refrigeration system
  • Pump startup control method, device, system and refrigeration system
  • Pump startup control method, device, system and refrigeration system

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Embodiment Construction

[0063] In order to reduce the cavitation risk of pump start-up and improve the reliability of the pump, the present invention provides a pump start-up control method, device and system and a refrigeration system. In this technical scheme, the output parameter of the control pump is gradually increased, and the increase value of each step is the length of the first step set. Due to the method of gradually increasing the output parameter of the pump, the impact of large flow refrigerant on The impact of the pump reduces the risk of cavitation when the pump starts, improves the reliability of the pump, and uses the parameter of the superheat of the refrigeration system to detect, and controls the output parameter of the pump to increase gradually with the set step, so that it can be slowly Reduce the superheat degree of the refrigeration system until the superheat degree of the refrigeration system is not greater than the set first superheat degree threshold, at this time, the flo...

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Abstract

The invention relates to the technical field of refrigeration and discloses a pump start control method, a pump start control device, a pump start control system and a refrigeration system. The pump start control method comprises the following steps: acquiring the superheat degree value of the current refrigeration system; when the superheat degree value of the refrigeration system is greater than a set first superheat degree threshold, controlling output parameters of a pump to increase a set first step length. According to the pump start control method, during pump start, the superheat degree is adopted as a parameter to gradually increase the output of the pump, so that impact of a large-flow refrigerant on the pump can be avoided, the cavitation risk during pump start is reduced, and the pump reliability is enhanced.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a pump start control method, device, system and a refrigeration system. Background technique [0002] In recent years, with the continuous expansion of the scale of the national communication network and the scale of users, the power consumption of equipment operation of communication enterprises has become an important cost that continues to increase. According to the survey, in the computer room, only the power consumption of the precision air conditioner accounts for more than 50% of the total power consumption of the computer room. About 70%. Therefore, adopting a reasonable comprehensive solution to effectively reduce the power consumption of air conditioners has become an important direction to reduce the energy consumption of air conditioners in computer rooms. [0003] For computer room air conditioners, it has become a major method to improve the utilization of n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/02
Inventor 樊易周谯峤李权旭任冰万积清王丽戴天鸿罗在军
Owner EMERSON NETWORK POWER CO LTD
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