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Main pump shield motor auxiliary impeller flow measuring device and loop flow dividing calculating method

A flow measurement device and auxiliary impeller technology, applied in pump control, mechanical equipment, non-variable-capacity pumps, etc., can solve problems such as the inability to solve the split ratio of fluid medium, and achieve the effect of convenient function expansion, stable measurement and simple structure

Active Publication Date: 2019-09-10
SHANGHAI JIAO TONG UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method cannot solve the split ratio of the fluid medium from the outlet of the auxiliary impeller

Method used

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  • Main pump shield motor auxiliary impeller flow measuring device and loop flow dividing calculating method
  • Main pump shield motor auxiliary impeller flow measuring device and loop flow dividing calculating method
  • Main pump shield motor auxiliary impeller flow measuring device and loop flow dividing calculating method

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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0035] The invention provides a main pump shielded motor auxiliary impeller flow measuring device and a circuit shunt flow measuring and calculating method. When measuring, use the auxiliary impeller flowmeter to obtain the flow rate of the rotor center hole, use the external cooling flowmeter to obtain the flow rate of the upper branch, and the difference between the two is the flow rate of the lower branch, so that the internal cooling of the shielded nuclear main pump can be obtained The flow distrib...

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Abstract

The invention provides a main pump shield motor auxiliary impeller flow measuring device. The main pump shield motor auxiliary impeller flow measuring device comprises an auxiliary impeller flowmeter,a flowmeter base, an upper end sleeve, a lower end sleeve, a rotor connecting cylinder and a bottom cover. The upper end of the auxiliary impeller flowmeter is sleeved with the upper end sleeve, theupper end sleeve is connected with the lower end of the rotor connecting cylinder, the upper end of the rotor connecting cylinder is assembled with the tail end of a rotor, the lower end of the auxiliary impeller flowmeter is arranged in the lower end sleeve, the lower end sleeve is assembled with the flowmeter base, and the flowmeter base is fixedly connected with the bottom cover. Shield type nuclear main pump auxiliary impeller flow measuring and inner cold circulation upper and lower branch flow distribution proportion accurate measuring can be achieved, test data reference is provided forshield type nuclear main pump stator and rotor gap design, and main pump inner temperature control, and improvement design of the shield type nuclear main pump is facilitated. Meanwhile, the device is simple in structure, convenient to mount, and direct in measuring. Compared with a traditional experience formula calculation and fluid simulation calculation, the device is more reliable and accurate.

Description

technical field [0001] The present invention relates to the technical field of fluid machinery, in particular, to a flow split test device in a shielded nuclear main pump and a calculation method for a flow split ratio thereof, especially to a flow test device for a shielded nuclear main pump internal cooling system and a circuit flow distribution measurement scheme . Background technique [0002] The shielded nuclear main pump is driven by a shielded motor. Its core feature is to cancel the rotating shaft sealing device of the traditional centrifugal pump, seal the impeller and rotor in the stator shell, and introduce the fluid medium into the motor, thereby transforming the dynamic seal For static sealing, the possibility of liquid leakage is fundamentally eliminated. Therefore, it is widely used to transport radioactive, poisonous and harmful liquid or gas. [0003] The shielded nuclear main pump rotor is provided with an auxiliary impeller, which is composed of a combi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D15/00
CPCF04D15/0088
Inventor 姚振强王升德金智毅罗国虎徐正松沈洪
Owner SHANGHAI JIAO TONG UNIV
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