Passive temperature control fluid path on-off switch

A technology of on-off switch and fluid path, which is applied in the field of passive temperature-controlled fluid path on-off switch, can solve problems such as coolant loss, and achieve the effect of simple structure and high reliability

Active Publication Date: 2014-07-30
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

An unavoidable problem is that these flow holes 10 will cause a certain amount of coolant loss when the steam in the water tank is discharged under accident conditions. Therefore, a means is needed to make these flow holes 10 be in an open state at ordinary times. down close

Method used

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Embodiment Construction

[0022] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] Such as figure 1 As shown, it is an on-off switch for a passive temperature-controlled fluid path provided by the present invention. The on-off switch is arranged on the wall 1 of the fluid pipeline, and the wall 1 of the fluid pipeline has a flow hole 10. When the fluid pipeline 7 When water is short, water can be replenished in the fluid pipe 7 through the flow hole 10 .

[0024] The on-off switch includes a cylindrical side wall 4 and an end cover 2, the cylindrical side wall 4 is fixed on the fluid pipe wall 1, and the end cover 2 is covered on the top of the cylindrical side wall 4; the cylindrical side wall 4, the end cover A limiting space 5 is formed between 2 and the fluid pipe wall 1, and the thermally deformable filler 3 is filled in the limiting space 5. The volume of the thermally deformable filler ...

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Abstract

The invention provides a passive temperature control fluid path on-off switch. The on-off switch is arranged on a fluid pipeline pipe wall, and a through-flow hole is formed in the fluid pipeline pipe wall. The on-off switch comprises a cylindrical side wall and an end cover, wherein the cylindrical side wall is fixed on the fluid pipeline pipe wall, the end cover is buckled on the top end of the cylindrical side wall, a limiting space is formed among the cylindrical side wall, the end cover and the fluid pipeline pipe wall and is filled with thermal deformation filler, a heater is arranged in the thermal deformation filler, a central through hole is formed in the end cover, a cut-off hole is formed in the thermal deformation filler, and the cut-off hole in the thermal deformation filler, the central through hole in the end cover and the through-flow hole in the fluid pipeline pipe wall form a fluid path. According to the passive temperature control fluid path on-off switch provided by the invention, switching between on and off of the fluid path is realized by utilizing the opening and the closing of the cut-off hole; realization of the switching between on and off does not need outside interference, so that the switch has the passive characteristic; the reliability is high, the structure is simple, and routing inspection and daily maintenance are not needed.

Description

technical field [0001] The invention belongs to the technical field of a fluid path on-off switch, in particular to a passive temperature-controlled fluid path on-off switch. Background technique [0002] In industrial production, on-off control of fluid paths is a fundamental problem. For larger channels, various types of valves can be used to control them. For smaller holes, the on-off switching depends on precise structural design. The invention is suitable for controlling holes with a diameter of 5mm or less. [0003] Take the invention patent application "Automatic Temperature Control Valve" (Application No.: 01110186.5) as an example. The solution uses a spring made of memory alloy to respond to temperature changes and realize the control of the valve head. Since no external driving force is required, the valve has a very Active characteristics, but its structure is relatively complex, it is difficult to be used for on-off control of small-sized channels, and the tem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K7/00F16K31/64
CPCF16K7/20F16K31/002
Inventor 韩旭于勇王琳李军刘江李丽娟
Owner CHINA NUCLEAR POWER ENG CO LTD
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