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Shielded reactor coolant pump water filling system and method

A technology for coolant pumps and reactors, applied in the direction of non-variable pumps, pumps, drive pumps, etc., can solve problems such as complex decontamination process

Inactive Publication Date: 2019-04-23
SANMEN NUCLEAR POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The equipment decontamination process is complex

Method used

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  • Shielded reactor coolant pump water filling system and method

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Embodiment Construction

[0019] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0020] Such as figure 1 , A shielded reactor coolant pump water filling system of the present invention includes a main pump body 8, a main pump exhaust valve 9, a main pump water filling / drain valve 7, a filter 5, a shut-off valve 3, and a water inlet valve 2. One end of the water inlet valve 2 is connected to the desalted water storage and distribution system 1 through a pipeline, and the other end is connected to the inlet of the shut-off valve 3 through a pipeline. The outlet of the shut-off valve 3 is connected to the inlet of the filter 5 through a pipeline, and the outlet of the filter 5 is connected to the main pump water filling / drainage valve 7, the main pump body 8, and the exhaust gas of the main pump in sequen...

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Abstract

The invention relates to a shielded reactor coolant pump water filling system and method and belongs to the technical field of nuclear power plant reactor power reactor coolant maintenance. The systemcomprises a main pump body, a main pump exhaust valve, a main pump water filling / drainage valve, a filter, a shut-off valve and a water inlet end valve; one end of the water inlet end valve is connected with a demineralized water storage and distribution system through a pipeline, and the other end of the water inlet end valve is connected with an inlet of the shut-off valve through a pipeline; an outlet of the shut-off valve is connected with an inlet of the filter through a pipeline; and an outlet of the filter is connected with the main pump water filling / drainage valve, the main pump bodyand the main pump exhaust valve through pipelines in sequence. The method comprises the steps that the shielded reactor coolant pump water filling system is constructed; and water filling is conducted based on the shielded reactor coolant pump water filling system, specifically, the water inlet end valve, the shut-off valve and the main pump water filling / drainage valve are opened at small opening degrees, and the main pump exhaust valve is also opened, thus, the top of the main pump body communicates with atmosphere in the water filling process. Impurities are prevented from accidentally entering a cooling circuit of the main pump body, and the risks such as bearing abrasion during starting of a main pump and equipment damage are avoided.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant reactor coolant pump maintenance, and in particular relates to a shielded reactor coolant pump water filling system and method. Background technique [0002] The water filling of the shielded reactor coolant pump (hereinafter referred to as the main pump) refers to filling the internal circuit of the main pump body with demineralized water. The water filling work of the main pump needs to be carried out after the main pump installation of the nuclear power plant is completed and the main pump is drained and overhauled. The purpose is to prevent impurities (such as particles) entrained in water in other systems directly connected to the reactor coolant system from accidentally entering the cooling circuit of the main pump body, causing major equipment risks such as bearing wear and equipment damage when the main pump starts. Due to the design characteristics of the Sanmen nuclear power ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D9/00
CPCF04D9/004F04D9/006
Inventor 李松曹阳金飞廖长城王信东耿加森林鑫辉王超郦元辉王扬
Owner SANMEN NUCLEAR POWER CO LTD
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