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Component cooling water pump for nuclear power plant

A technology for cooling water pumps and nuclear power plants, which is applied to the components, mechanical equipment, pumps, etc. of the pumping device for elastic fluids, can solve the problems of large volume and poor shock resistance of cooling water pumps, and achieves improved shock resistance and improved operation stability. , the effect of reducing the volume

Inactive Publication Date: 2011-04-20
SHANGHAI APOLLO MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide an equipment cooling water pump for nuclear power plants. The equipment cooling water pump for nuclear power plants needs to solve the problem of large volume, poor shock resistance and external forced lubrication system lubrication in the prior art. technical issues

Method used

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  • Component cooling water pump for nuclear power plant
  • Component cooling water pump for nuclear power plant

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Embodiment 1

[0013] Such as figure 1 As shown, the equipment cooling water pump used in nuclear power plants in the present invention is composed of a stator assembly, a rotor assembly, a bearing assembly and a shaft seal assembly, wherein the stator assembly is composed of a pump body 1, a pump cover 5 and a bearing body 9, and the The rotor assembly described above is composed of pump shaft 19, impeller 4 and oil guide ring 10, the bearing assembly is composed of cylindrical roller bearing 8, angular contact ball bearing 12, front bearing cover 21 and rear bearing cover 14, and the described The pump body 1 is a radially split double volute structure, the pump body 1 is provided with an intermediate partition plate 24, the pump body 1 has a double volute structure, the suction port 25 is horizontally arranged at one end of the pump body 1, and the pump cover 5 is set At the other end of the pump body 1, the pump cover 5 is connected to the bearing body 9, the discharge port 26 is arrange...

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Abstract

The invention discloses a component cooling water pump for a nuclear power plant, which is a single-stage, single-suction, double-volute and horizontal arm-hanging type centrifugal pump. The pump is characterized in that a pump body is in a radial split-casing double-volute structure, one end of the pump body is provided with a suction inlet, and a pump cover is fixedly connected to the other end of the pump body; the upper side of the pump body is provided with a discharge outlet, and the suction inlet is perpendicular to the discharge outlet; a pump shaft passes through the pump cover and a bearing body; and a shaft seal assembly is composed of box-type mechanical seal components. The component cooling water pump disclosed by the invention has the advantages that the pump body is in a radial split-casing double-volute structure, and the centre line of an impeller is coincide with the centre line of the pump body, therefore, the radial force of the pump in the process of operating can be reduced, the shock resistance is enhanced, the service life is prolonged, and the volume of the pump is reduced; and because a thin-oil self-lubricating system is adopted, the pump can directly start without pre-lubrication, thereby enhancing the operating stability of the pump.

Description

Technical field: [0001] The invention relates to the field of machinery, in particular to fluid conveying machinery, in particular to a pump, in particular to a cooling water pump for nuclear power plant equipment. Background technique: [0002] The nuclear power plant uses equipment cooling water pumps to cool various nuclear island heat exchangers, and transfers the heat load to seawater through heat exchangers cooled by important plant water pumps, thereby forming a barrier between the nuclear island heat exchangers and seawater to prevent Uncontrolled release of radioactive fluids associated with heat exchangers into seawater. The main safety function of the equipment cooling water pump is to transfer heat from important and safety-related rooms, systems and equipment to the final heat sink - seawater, together with the important plant safety water pump system under normal and accidental operating conditions; In the event of a leak from the cooled heat exchanger (contam...

Claims

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Application Information

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IPC IPC(8): F04D1/00F04D29/046F04D29/043F04D29/42
Inventor 陆金琪
Owner SHANGHAI APOLLO MACHINERY
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