A method for reversing APA standby pump, heating pump system and main feed water pump system
A main feedwater pump and standby pump technology, applied in the field of nuclear power, can solve the problems of low availability of APA standby pumps and low safety and stability of unit operation, so as to reduce water vaporization, improve operation safety and stability, and ensure safety and reliability Effect
Active Publication Date: 2019-05-28
GUANGDONG NUCLEAR POWER JOINT VENTURE +4
View PDF11 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The purpose of the present invention is to provide a method for reversing APA standby pumps, aiming to solve the problem of low availability of APA standby pumps and low unit operation safety and stability due to the reversal of APA standby pumps in the main feed water pump system of existing nuclear power plants The problem
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0042] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0043] It is to be understood that the terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inner", "outer" and other indicated orientations...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a method for solving reverse rotation of an APA standby pump, a pump warming system and a primary water-feeding pump system. The method comprises the steps that 101, all components of the primary water-feeding pump system are connected; and 102, the pump warming system is arranged. According to the method, through the pump warming system, pump warming water of a primary water-feeding pump set is guided to a water-feeding pipeline through a first pump warming branch, and the pump warming water is driven to flow into a pressure pump through the water-feeding pipeline and flow out from a water inlet pipeline; the pump warming water can be injected through the water-feeding pipeline and the water inlet pipeline which are located on the two sides of the pressure pump to control the temperature of cooling water, and the temperature of the pump warming water is controlled to be lower than the saturation temperature corresponding to the minimal pressure of an oxygen extractor to reduce the water vaporization phenomenon inside the water-feeding pipeline and the water inlet pipeline on the two sides of the pressure pump to prevent the two sides of the pressure pump from generating the pressure deviation, so that the situation that a pump shaft shakes and thus reverse rotation is triggered is avoided to ensure the operation safe reliability of the pressure pump; andthe available rate of the pressure pump is increased, and the operation safe stability of a unit is improved.
Description
technical field [0001] The invention belongs to the technical field of nuclear power, and more specifically relates to a method for reversing an APA backup pump, a heating pump system and a main feed water pump system. Background technique [0002] The design of the main feed water pump system of the existing nuclear power plant is unreasonable. During the RGL04 (abbreviation for rod control) test, the water in the pipeline on both sides of the pressure pump will vaporize, resulting in pressure on both sides of the pressure pump. Deviation, and finally the pump shaft shakes and actually triggers the reverse. In this way, when the nuclear power plant is performing the PT1RGL04 (abbreviation for rod control) test, the power of the unit is reduced from full power to 500MW, and the power is increased after staying for nearly 2 minutes. ) will have a reverse alarm and exit the hot standby state. The instrumentation and control personnel need to check on site to confirm that the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & AuthorityPatents(China)
IPC IPC(8): F04B49/06F04B51/00
CPCF04B49/06F04B51/00
Inventor庞巨荣何银江王宝刚刘洋
OwnerGUANGDONG NUCLEAR POWER JOINT VENTURE