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Low-pressure seal gate valve

A low-pressure sealing and gate valve technology, applied in the field of reactor engineering, can solve the problems of high installation position, affecting the tonnage of cranes, and narrow space, and achieve the effects of reducing radial size and height, improving safety and improving economy.

Active Publication Date: 2016-04-27
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The installation location of the secondary circuit sodium pump is located in the room on the 8th floor. The installation location is high and the space is small. When disassembling, the secondary circuit pump can only be accessed from the skylight on the roof of the factory building with a height of more than 40 meters. A large-tonnage truck crane is required for operation. Gate valves The height directly affects the tonnage of the crane, thus affecting the economy of the disassembly process
Traditional hermetic gate valves cannot meet the requirements of sodium-cooled fast reactors in terms of structural design, safety, reliability, and economy.

Method used

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Embodiment Construction

[0027] The present invention will be further elaborated below in combination with the accompanying drawings and specific embodiments.

[0028] A low-pressure sealing gate valve, such as Figure 4 , 5 As shown, the device includes a box body 1, a gate, a gasket 4, a speed reducer 5, and a rocker. 5 is connected, and the reducer 5 is connected with the rocking handle outside the casing 1, and the device adopts a manual rotating rocking handle. There is a sealing gasket 4 at the closing position of the left gate 2 and the right gate 2, which ensures the reliable sealing of the gate valve under low pressure.

[0029] The joint surface between the two gates 2 is a slope, and the gate on the upper side is equipped with a pressure plate 6, which can compress the two gates 2 more effectively when the gate valve is closed. The joint surface between the gates is provided with Gasket 4, the joint between the gate and the box body 1 is provided with a sealing structure, which further e...

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Abstract

The invention discloses a low-pressure seal gate valve for a sodium-cooled fast reactor. The low-pressure seal gate valve comprises a box body, a flashboard, a reducer and a rocking handle, wherein the flashboard is composed of two flashboards; the two flashboard are connected with the reducer respectively; and the reducer is connected with the rocking handle. The invention provides the low-pressure seal gate valve which is easy in realizing opening and closing of the flashboards, is smaller in radial size and height direction size and can realize safe and reliable sealing under the condition of low pressure.

Description

technical field [0001] The invention belongs to the technical field of reactor engineering, in particular to a low-pressure sealing gate valve for sodium-cooled fast reactors. Background technique [0002] When the sodium-cooled fast reactor fails or starts to be decommissioned, it is necessary to disassemble and install the sodium pump of the secondary circuit. This operation needs to seal the secondary circuit to prevent the release of radioactivity and prevent the contact of sodium with air from causing a fire. Moreover, due to the particularity of the structure of the sodium-cooled fast reactor, the installation room of the secondary loop sodium pump is small, so the requirements for the volume and sealing performance of the sealing device are very high. [0003] At present, there are three kinds of gate valve structures, which are divided into "sliding door structure", "reversing door structure" and "soft door structure". [0004] Such as figure 1 As shown, in the exi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/20F16K1/36F16K31/53
CPCF16K1/2014F16K1/2021F16K1/2042F16K1/205F16K31/535
Inventor 刘兆阳孙刚杨孔雳
Owner CHINA INSTITUTE OF ATOMIC ENERGY