Method for solving reverse rotation of APA standby pump, pump warming system and primary water-feeding pump system
A main feed water pump and standby pump technology, applied in the field of nuclear power, can solve the problems of low safety and stability of unit operation and low availability of APA standby pumps, so as to reduce water vaporization, improve operation safety and stability, and avoid pressure deviation Effect
Active Publication Date: 2018-04-13
GUANGDONG NUCLEAR POWER JOINT VENTURE +4
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[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
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[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0042] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is said to be "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0043] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" The orientation or positional relationship indicated by "bottom", "inn...
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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 solving the reversal of an APA standby 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 pipes on both sides of the pressure pump will vaporize, resulting in pressure on both sides of the pressure pump. Deviation, eventually the pump shaft will shake and the reverse will be triggered. In this way, when the nuclear power plant performs the PT1RGL04 (abbreviation for rod control) test, the unit power is reduced from full power to 500MW, and the power is increased after staying for nearly 2 minutes. When the power is increased to about 510MW, the D1 group APA standby pump (electric main feed pump ) A reversal alarm will appear and the hot sta...
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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