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Pressure reducing valve for nuclear power fire fighting

A technology of pressure reducing valve and fire protection, applied in valve details, safety valve, balance valve, etc., can solve the problems of dangerous control system, valve can not be controlled, etc., to achieve the effect of improving stability, increasing control pressure, and reasonable design

Inactive Publication Date: 2013-11-27
HANGZHOU LIANGGONG VALVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the disadvantages of existing valves are: this type of valve can only be used in low-pressure situations; the valve cannot be controlled under special working conditions, which brings certain dangers to the entire control system, especially the nuclear power fire protection system

Method used

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  • Pressure reducing valve for nuclear power fire fighting
  • Pressure reducing valve for nuclear power fire fighting
  • Pressure reducing valve for nuclear power fire fighting

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Such as figure 1 As shown, a nuclear power fire-fighting pressure reducing valve includes a valve body 1, a multi-diaphragm actuator 4 fixed above the valve body 1 through a bracket 2, and an elastic element 3 connecting the valve body 1 and the multi-diaphragm actuator 4 . The valve body 1 is provided with a valve core, and the valve body 1 has a water inlet cavity and a water outlet cavity. The downstream pressure is controlled by the opening of the valve core, and the elastic element 3 controls the initial position of the valve core.

[0021] The water inlet cavity 101 and the water outlet cavity 102 of the valve body 1 are respectively connected to the cylinder inlet 2402 and the cylinder control interface 2401 of the piston drive mechanism 7 through the pipeline a and the pipeline b, and the cylinder of the piston drive mechanism 7 The body outlet 2403 is...

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Abstract

The invention provides a pressure reducing valve for nuclear power fire fighting, and belongs to the technical field of valves. The pressure reducing valve comprises a valve body, a multi-diaphragm type actuating mechanism and an elastic element, wherein a valve spool is arranged in the inner cavity of the valve body; the multi-diaphragm type actuating mechanism is arranged above the valve body; the elastic element is connected with the valve body and the multi-diaphragm type actuating mechanism; a water inlet cavity opening and a water outlet cavity opening of the valve body are respectively connected with a cylinder body inlet and a cylinder body control connector of a piston type driving mechanism through a pipeline a and a pipeline b respectively; a cylinder body outlet of the piston type driving mechanism is connected with the multi-diaphragm type actuating mechanism through a pipeline c; the pipeline c is also provided with a fine adjustment type balancing mechanism; one end of the fine adjustment type balancing mechanism is connected with an upper diaphragm chamber of the multi-diaphragm type actuating mechanism; after the other end of the fine adjustment type balancing mechanism is connected with a lower diaphragm chamber of the multi-diaphragm type actuating mechanism through a pipeline d, the fine adjustment type balancing mechanism and the pipeline b form a circulating pipeline. The pressure reducing valve for nuclear power fire fighting is wide in application range and high in adjustment stability, and can be urgently controlled under special work conditions.

Description

technical field [0001] The invention belongs to the technical field of valves, and in particular relates to a pressure reducing valve for nuclear power fire protection. Background technique [0002] In the prior art, the inner diaphragm of the valve actuator adopts a single-layer type, and most pilot valves use diaphragms or bellows, and there is no external control system. Therefore, the disadvantages of existing valves are: this type of valve can only be used in low-pressure situations; the valve cannot be controlled under special working conditions, which brings certain dangers to the entire control system, especially the nuclear power fire protection system. Contents of the invention [0003] Aiming at the problems existing in the prior art, the purpose of the present invention is to design and provide a technical solution for a nuclear power fire-fighting pressure reducing valve with a wide application range, high adjustment stability, and emergency control under spec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K17/04F16K31/126
Inventor 李展其蒋唐锦华鑫美
Owner HANGZHOU LIANGGONG VALVES
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