Independent flow online detection and verification method for parallel equipment of refrigeration station

Abstract

The invention relates to an independent flow online detection and verification method for parallel equipment of a refrigeration station, in particular to an independent flow online detection and verification method for parallel equipment of a cooling system. The parallel air-conditioning water system equipment comprises a plurality of parallel resistance equipment, a header pipe flowmeter, a data acquisition unit, a processor and a memory, and the header pipe flowmeter inputs flow data of a header pipe into the data acquisition unit, the processor and the memory. The equipment further comprises a pipeline composed of a pressure sensor, a service valve, an annular buffer bend, a three-way connector and a connecting pipe. Pressure tapping pipes are machined and installed at the positions A and B of an upstream straight pipe section and a downstream straight pipe section of the resistance equipment, the service valve and the annular buffer bend are arranged on the pressure tapping pipes, and the tail end of each pressure tapping pipe is connected with one three-way connector. The other two interfaces of each three-way connector are respectively connected with a common pressure gauge (for indicating pressure on site) and a pressure sensor, information acquired by the pressure sensor is connected with an external data acquisition unit, a processor and a memory through data lines, and the processor and the memory can communicate with other systems such as a cloud end through a network.

Description

technical field [0001] The invention belongs to the technical field of on-line detection and verification of air-conditioning water system flow, in particular to an independent flow on-line detection and verification method in parallel equipment of the air-conditioning water system. These include parallel refrigeration pumps, or parallel cooling pumps, or parallel heat exchangers (including parallel evaporators, or parallel condensers), and similar parallel equipment is called parallel resistance equipment. The medium flowing in the parallel resistance device can be water or liquid such as ethylene glycol. [0002] As an extension, the present invention can also be applied to the field of flow detection of other parallel liquid pipelines other than the air-conditioning water system. Background technique [0003] Due to the space and interconnection of the parallel equipment in the air-conditioning water system, and the impact of investment costs, it is difficult to independ...

AI Technical Summary

Problems solved by technology

However, the total flow can only be used to analyze the comprehensive flow and performance of parallel devices, and cannot accurately analyze the independent flow and related performance of each device independently and comprehensively, making it difficult to grasp the operating characteristics of each device and provide targeted Adverse effects of operation optimization and energy saving and emission reduction

Due to the lack of independent flow detection or measurement, in engineering applications or scientific research, people can only deal with the independent flow of each device in parallel equipment by means of equal distribution. The system is unrealistic, which will lead to wrong analysis conclusions and inappropriate operation strategies, which will affect the energy saving and energy efficiency optimization measures and effects of the air conditioning water system

However, it is unrealistic to equip each device with a flow meter (or flow transmitter, etc.). On the one hand, the price of the flow meter is high, which will bring unacceptable economic cost pressure; , it is difficult for the connecting pipelines between parallel equipment to meet the normal installation requirements of common flowmeters (the length of the upstream and downstream pipelines is not enough), and it is impossible to install pipelines with a minimum length that can meet the measurement and calculation of stable flow on independent cooling equipment , even if a flowmeter is installed, it is still inaccurate

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