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Drum-shaped filter screen support structure in nuclear power plant

A support structure, a technology for nuclear power plants, applied in the fields of filtration and separation, fixed filter element filters, chemical instruments and methods, etc., can solve the problems affecting the performance and service life of the wheel hub, the accuracy of the wheel hub is not high, casting cracks, etc., to ensure safety. The effect of normal operation, simple appearance and structure, and improved service life

Active Publication Date: 2019-11-05
中广核工程有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the wheel hubs designed and manufactured in China are cast structures. In order to improve the strength of the hubs, a large number of reinforcing ribs are cast on the hubs. The structure is complex, and the precision of the cast hubs is not high. Casting cracks will inevitably occur, which will affect the performance and service life of the hubs.

Method used

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  • Drum-shaped filter screen support structure in nuclear power plant
  • Drum-shaped filter screen support structure in nuclear power plant
  • Drum-shaped filter screen support structure in nuclear power plant

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Embodiment Construction

[0030] In order to make the purpose, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific implementations described in this specification are only for explaining the present invention, not for limiting the present invention.

[0031] see figure 1 and figure 2 , The nuclear power plant drum screen support structure of the present invention includes a main shaft 10 , a main shaft bearing seat 12 , a bearing seat backing plate 30 , a drum screen protection device, a hub 14 and a spoke 70 . The main shaft 10 is installed in the main shaft bearing housing 12 , the hub 14 is installed on the main shaft 10 , and the spokes 70 are connected with the hub 14 .

[0032] The main shaft 10 is a solid shaft, which is installed in the main shaft bearing seat 12 and rotates with the...

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Abstract

The invention discloses a drum-shaped filter screen support structure in a nuclear power plant. The structure comprises a spindle, a spindle bearing seat, a bearing seat base plate, a drum-shaped filter screen protection device, a hub and spokes, wherein the spindle is mounted in the spindle bearing seat; the hub is mounted on the spindle; the spokes are connected with the hub; the drum-shaped filter screen protection device comprises a protection pressing block and a protection pull rod; the bearing seat base plate is fixed on a concrete floor plate; the spindle bearing seat is connected below the protection pressing block; and the protection pressing block is connected with the bearing seat base plate through the protection pull rod. Before being damaged, a drum-shaped filter screen canbe pulled off through a pull-off load of the protection pull rod, and thus security of the drum-shaped filter screen can be ensured. As the drum-shaped filter screen protection device is arranged on the spindle bearing seat of the structure, the drum-shaped filter screen can be pulled off by the protection pull rod in case of large buoyancy, and a protection function on the drum-shaped filter screen can be achieved. The hub is of a forged piece structure, and the spokes are of H-shaped steel structures.

Description

technical field [0001] The invention belongs to the field of nuclear power plant circulating water filtration, more specifically, the invention relates to a support structure of a drum-shaped filter screen used for filtering seawater in a nuclear power plant circulating water filtering system. Background technique [0002] Drum-shaped filter (also known as drum screen) is the last large-scale filter device in the "defense in depth" system of nuclear power cold source to resist marine organisms. Its performance directly affects the safety of nuclear power cold source and the safe and stable operation of the unit. [0003] When the "outside in and inside out" type drum net is running, the water enters from the outside of the net and flows out from the inside of the net, so that marine organisms and other garbage are intercepted outside the drum net. Because the water level outside the drum net is higher than the water level inside the drum net, the drum net is affected by buoy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D29/15B01D35/14
CPCB01D29/15B01D35/14
Inventor 黄晓杰谢建华张峰杨锦春何英勇林一山戈永军王一恒孟令阳王晓峰
Owner 中广核工程有限公司
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