Water supplying system for flow device

Abstract

The invention belongs to the field of flow detection and relates to a water supplying system for a flow device. The water supplying system comprises a water pump assembly, a water pump rotating speed measurement device, a pressure transmitter, a standard flow meter, a regulating valve, a bypass valve, a soft starter, a frequency converter and a controller. Detecting signals of the water pump rotating speed measurement device, the pressure transmitter and the standard flow meter are sent to the controller. The water pump assembly comprises at least two water pumps, one pump is controlled by the controller through the frequency converter, other water pumps are controlled by the controller through the soft starter, the water pumps are in parallel connection, the bypass valve is arranged on a bypass pipeline in parallel connection with the water pumps, and water supplied by the water pumps and the bypass valve flows into a detecting pipeline. The pressure transmitter, the regulating valve and the standard flow meter are arranged on the detecting pipeline. The water supplying system for the flow device has the advantages of being low in cost, small in occupied space and capable of meeting the precision requirement of a flow standard device.

Description

technical field [0001] The invention relates to the field of flow detection, in particular to a water supply system of a flow device. Background technique [0002] As an important part of the national economy, flow measurement requires high precision and high efficiency. The flow standard device is used as a standard for the unification and transmission of the value of the flow unit, ensuring that the values ​​of various regions and departments in my country are unified on one standard, and provide a basis for economic accounting or arbitration work. Therefore, it is of great significance to improve the flow stability of the flow standard device. [0003] The high-level water tower is an ideal water source for the flow standard device. It provides water flow with stable pressure, and the flow stability in the verification pipeline can reach a level better than 0.06%. However, the construction cost of the water tower is high, it takes up a lot of space, and the pressure hea...

AI Technical Summary

Problems solved by technology

At present, this kind of water supply system generally can only achieve a flow stability level of 0.2%, which is still far behind compared with water towers.

And as the diameter and flow of the verification pipeline increase, the volume of the required pressure-stabilizing vessel also increases, and the construction cost and occupied space increase accordingly.

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