Temperature distribution measuring method of shielded nuclear main pump cooling system

A cooling system and temperature distribution technology, applied in the field of fluid machinery, which can solve problems such as single functional area, no temperature detection and analysis, and temperature analysis limitations.

Active Publication Date: 2016-05-25
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And at present, the temperature analysis of the large shielded nuclear main pump is limited to a single functional area, such as the bearing area, flywheel area, etc., and there is no systematic temperature detection and analysis

Method used

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  • Temperature distribution measuring method of shielded nuclear main pump cooling system
  • Temperature distribution measuring method of shielded nuclear main pump cooling system
  • Temperature distribution measuring method of shielded nuclear main pump cooling system

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Embodiment Construction

[0025] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar extensions without violating the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0027] see figure 1 , the shielded nuclear main pump cooling system of this embodiment includes an upper cooling circuit 1 and a lower cooling circuit 2 for cooling liquid circulation, between the total confluence point and the total diversion point of the upper cooling circuit 1 an...

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Abstract

The invention provides a temperature distribution measuring method of a shielded nuclear main pump cooling system. The method comprises the following steps: establishing an equivalent physical model of the shielded nuclear main pump cooling system, and setting the devices on an upper cooling loop and a lower cooling loop as nodes; obtaining the mass flow rate, equivalent heat effect power and specific heat of the cooling liquid at each node; determining the temperature changes of corresponding nodes; obtaining the flow before the confluence of two branches at each confluence point and the flow after confluence, and determining the temperature change relation at the confluence points according to energy conservation; and selecting one point in the loop as a temperature start point, and serially connecting the temperature changes according to a topological structure to obtain the temperature distribution of the equivalent physical model. By adopting the method provided by the invention, the overall temperature distribution of the shielded nuclear main pump cooling system can be obtained to facilitate system analysis.

Description

technical field [0001] The invention relates to the field of fluid machinery, in particular to a method for measuring temperature distribution of a shielded nuclear main pump cooling system. Background technique [0002] The canned pump is a kind of non-moving sealed pump. The pump and the driving motor are sealed in a pressure vessel filled with the pumped medium. The pressure vessel is statically sealed, and a rotating magnetic field is provided by a wire winding by driving the rotor. Since the structure of the canned pump cancels the rotary shaft sealing device of the traditional centrifugal pump, it can be completely leak-free. [0003] With its technical advantages of no leakage, canned pumps are widely used in many industries such as energy and chemical industry. In the third-generation nuclear power technology, in order to improve the safety of the reactor, a large shielded nuclear main pump is used as a core coolant circulation power source to replace the traditiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/58G01K11/00
CPCF04D29/58G01K11/00
Inventor 姚振强王升德罗国虎沈洪
Owner SHANGHAI JIAO TONG UNIV
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