A dismantling device for nuclear power plant metal graphite sealing ring

A metal graphite and disassembly device technology, applied in the field of nuclear power, can solve problems such as difficult disassembly, achieve the effects of safe disassembly, reduce working time and personnel radiation dose, and have a simple structure

Active Publication Date: 2019-09-17
JIANGSU NUCLEAR POWER CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a dismantling device for metal graphite sealing rings in nuclear power plants. The dismantling device has a simple and reliable structure, can quickly, completely and safely disassemble sealing rings of different sizes, and solves the problem that it is not easy to disassemble in engineering

Method used

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  • A dismantling device for nuclear power plant metal graphite sealing ring
  • A dismantling device for nuclear power plant metal graphite sealing ring
  • A dismantling device for nuclear power plant metal graphite sealing ring

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0016] Such as figure 1 , 2 , 3 and Figure 4 As shown, the sealing tank body 4, the outer metal frame 5 of the sealing ring, the graphite sealing ring 6, and the inner metal frame 7 of the sealing ring are all ring-shaped. There is an annular groove in the middle of the sealing groove body 4, and the outer metal frame 5 of the sealing ring, the graphite sealing ring 6, and the inner metal frame 7 of the sealing ring are all located in the annular groove, and the outer metal frame 5 of the sealing ring, the graphite sealing ring 6, and the inner metal frame of the sealing ring The metal frames 7 are arranged sequentially from outside to inside along the radial direction of the annular groove.

[0017] Such as figure 1 , 2 , 3 and Figure 4 As shown, the present invention provides a dismantling device for the metal graphite sealing ring o...

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Abstract

The invention belongs to the technical field of nuclear power and particularly discloses a nuclear power plant metal graphite seal ring removal device, comprising a portal frame mounted on a seal channel, a lift bolt inserted in the portal frame, and a nut sleeving the lift bolt; the nut is arranged above the portal frame, the top of the lift bolt is inserted into the top of the portal frame, and the bottom of the lift bolt is arranged above a seal ring outer metal frame mounted in a ring groove of the seal channel. The nuclear power plant metal graphite seal ring removal device is simple and reliable in structure and allows seal rings of different sizes to be removed quickly, completely and safely, and the problem that removing in engineering is not easy is solved.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and in particular relates to a dismantling device for a metal graphite sealing ring of a nuclear power plant. Background technique [0002] Metal graphite sealing ring is a commonly used sealing form in nuclear power plants. It is often used in high-pressure static sealing environments. The metal of the inner and outer rings is used as the limit, and the graphite ring is squeezed and deformed to fill the sealing part to achieve the sealing effect. For example, the main junction surface of the reactor coolant pump of Tianwan Nuclear Power Station uses two metal graphite sealing rings to realize the primary circuit pressure sealing of 15.6MPa. [0003] In the overhaul work, the sealing surface needs to be opened, and at this time the sealing ring is invalid and cannot be reused, so it needs to be disassembled and replaced with a new sealing ring. Due to the long-term high-pressure extrusion,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B27/00
Inventor 昝映辉牛培宇孙忠志孟晋安宁冯光宇王祥
Owner JIANGSU NUCLEAR POWER CORP
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