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Nuclear power plant personnel gate buffer device

A personnel gate and buffer device technology, applied in the field of nuclear power, can solve the problems of failure of the sealing door to close the pressure-bearing boundary of the nuclear containment, insufficient buffering of the impact force of the door panel, affecting the service life of the transmission mechanism, etc., and achieves maintenance integrity and convenient design. , the effect of simple structure

Active Publication Date: 2020-08-28
CHINA NUCLEAR POWER DESIGN COMPANY +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing buffer mechanism cannot fully buffer the impact force of the door panel, causing the airtight door to rebound, resulting in the sealing of the personnel gate airtight door being not tight after closing
At the same time, the instantaneous rebound impact when the airtight door is closed affects the service life of the transmission mechanism
Since the personnel gate is a part of the pressure-bearing boundary of the nuclear containment and runs through the inner and outer containment, if the sealing door is not closed tightly, it may lead to the failure of the pressure-bearing boundary of the nuclear containment, causing serious consequences

Method used

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  • Nuclear power plant personnel gate buffer device
  • Nuclear power plant personnel gate buffer device
  • Nuclear power plant personnel gate buffer device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] see figure 2 As shown, the thickness of the slide plate 124 is greater than the thickness of the suction cup backing plate 122, and the slide plate 124 is provided with a chute 1240 on one side of the suction cup backing plate 122. The chute 1240 is preferably located in the middle of the thickness direction of the slide plate 124 and extends to both ends. , both sides of the suction cup backing plate 122 are provided with guide rails 1220, the guide rails 1220 are located at the front of the suction cup backing plate 122, and the thickness of the guide rails 1220 is slightly smaller than the width of the chute 1240, and the guide rails 1220 on both sides are respectively embedded in the slides of the slide plates 124 on both sides. in the groove 1240 and move axially along the sliding groove 1240.

[0044] Since the both sides of the suction cup backing plate 122 are provided with guide rails 1220, the width of the suction cup backing plate 122 will be greater than th...

Embodiment 2

[0046] The adjacent side of the slide plate 124 and the suction cup backing plate 122 is provided with grooved bearings (not shown). The guide rails (not shown) are arranged on the side, and the guide rails on both sides are respectively located in the grooves of the groove bearings (not shown). The suction cup backing plate 122 is adapted to the groove bearings through the guide rails on both sides, and the axial move.

[0047] Simultaneously, also can offer some slots (not shown) that place groove bearing on the adjacent side of slide plate 124 and suction cup backing plate 122, utilize fixed shaft (figure not shown) to groove bearing (figure not shown) out) is fixed in the notch, and the groove bearing can rotate in the notch, then by setting guide rails (not shown) on both sides of the suction cup backing plate 122, the guide rails on both sides are respectively located in the groove bearing (not shown in the figure) ) in the groove, the suction cup backing plate 122 is a...

Embodiment approach 3

[0049] Embodiment 3 is basically the same as Embodiment 2, except that groove bearings (not shown) are arranged on both sides of the suction cup backing plate 122, and guide rails are set on the side adjacent to the suction cup backing plate 122 of the slide plate 124 (Fig. not shown), the guide rail is located in the groove of the groove bearing, and the suction cup backing plate 122 can move axially through the groove bearing and the guide rail.

[0050] Groove bearings (not shown) can be fixed on both sides of the suction cup backing plate 122 at intervals through mounting brackets, or notches can be set on both sides of the suction cup backing plate 122, and the groove bearings can be placed through the fixed shaft. The method is the same as Embodiment 2.

[0051] One end of the second mandrel 132 is fixed on the bottom of the suction cup backing plate 122 by welding or threaded connection. In the illustrated embodiment, two second mandrels 132 are arranged side by side, a...

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Abstract

The invention discloses a buffer device for a personnel gate in a nuclear power plant, which comprises: a suction cup structural member fixed on a door frame, including a fixedly connected electromagnetic suction cup and a suction cup backing plate, slide plates are arranged on both sides of the suction cup backing plate, and electromagnetic suction cups connected together The suction cup and the suction cup backing plate can move up and down along the slide plate, the electromagnetic chuck is connected with a power supply, and is used to control the power supply time of the electromagnetic chuck; and the suction plate structure is fixed on the door panel, including the suction plate, the suction plate connection plate and the door panel The connection plate, the suction plate is fixed on the suction plate connection plate, the first spring is arranged between the suction plate connection plate and the door panel connection plate, the first spring is pierced with a first mandrel, and one end of the first mandrel is connected to the suction plate The plate is fixed, and the other end passes through the door panel connecting plate, and the first spring is set between the suction plate connecting plate and the door panel connecting plate through the auxiliary part; wherein, the suction cup structure and the suction plate structure can be sucked and locked and opened.

Description

technical field [0001] The invention belongs to the field of nuclear power, and more specifically, the invention relates to a buffer device for a personnel gate of a nuclear power plant. Background technique [0002] The main function of personnel gates in nuclear power plants is to allow personnel and small equipment to pass through during reactor operation or thermal shutdown without damaging the sealing function of the containment vessel. Under special circumstances, it also has the following functions: under accident conditions, it can be used as an emergency evacuation exit for personnel; during cold shutdown, the gate is released from the chain, and the inner and outer doors are opened at the same time, which can be used as a passage for personnel and small equipment to enter and exit the containment; It can be used as a pressurization / decompression chamber when carrying out sealing and strength tests. [0003] The structure of the personnel gate includes a cylinder b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E05F5/02E05C19/16
CPCE05C19/166E05F5/02E05Y2900/11E05Y2201/474E06B3/70E06B3/36E06B5/10
Inventor 钦军伟谢洪虎张峰李石磊刘小华张译寒马文勤
Owner CHINA NUCLEAR POWER DESIGN COMPANY