Portable transfer device for sealing ring of reactor pressure vessel of nuclear power station
A technology for nuclear power plant reactors and pressure vessels, applied in the field of nuclear power, can solve problems such as damaged seal rings and complex on-site environments, and achieve the effects of improving work efficiency, optimizing maintenance quality, and reducing the risk of damage to spare parts
Pending Publication Date: 2022-03-15
CHINA GENERAL NUCLEAR POWER OPERATION +2
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- Application Information
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Problems solved by technology
Due to the soft material of the sealing ring and the complex environment on site, this process requires 7 people to act in unison, otherwise the sealing ring will be easily damaged
Method used
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[0028] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.
[0029] like Figure 1 to Figure 4 As shown, the nuclear power plant reactor pressure vessel sealing ring portable transfer device in a preferred embodiment of the present invention includes a main support 1 , a lifting device 2 and a lifting device 3 .
[0030] The main frame 1 is circular and formed by splicing several arc-shaped frames, and the lower side of the frames forms a receiving cavity 11 .
[0031] Lifting device 2 comprises several pendants 21 and several guiding mechanisms 22, and the upper side of pendant 21 is provided with two positioning grooves 211 side by side, to snap in for inner seal ring 4, outer seal ring 5 respectively, and each pendant 21 is on the side of main support 1. The lower side is arr...
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The invention relates to a portable transfer device for a nuclear power station reactor pressure vessel sealing ring. The portable transfer device comprises a main support, a lifting device and a lifting device. The main support is round and is formed by splicing a plurality of arc-shaped support bodies, and a containing cavity is formed in the lower side of each support body. The lifting device comprises a plurality of hanging pieces and a plurality of guide mechanisms; two positioning grooves are formed in the upper sides of the hanging pieces side by side and used for clamping the inner sealing ring and the outer sealing ring respectively, the hanging pieces are arranged on the lower side of the main support at intervals in the circumferential direction, and the guide mechanism is installed on the main support in a lifting mode and connected with one hanging piece; the lifting device is installed on the main support and drives the lifting device to ascend and descend so that the inner sealing ring and the outer sealing ring on the hanging piece can be lifted to the containing cavity or put down from the containing cavity. The device can improve the transportation and storage process of the sealing ring, reduce industrial safety and radiation protection risks, optimize and improve the overhaul quality of the sealing ring, reduce personnel investment, reduce spare part damage caused by human errors, improve the working efficiency and shorten the overhaul period of a nuclear power station.
Description
technical field [0001] The invention relates to the field of nuclear power, and more specifically relates to a portable transfer device for the seal ring of a reactor pressure vessel of a nuclear power plant. Background technique [0002] The outer diameter of the flange on the sealing surface of the reactor pressure vessel is 4600mm, which belongs to the pressure boundary of the primary circuit and requires extremely high sealing performance. The sealing ring is a C-shaped open Helicoflex sealing ring with a diameter of 4000mm and an outer diameter of its section of φ12.9mm. The sealing ring is composed of two sealing metal O-rings, the inner and the outer, with a total weight of 15Kg. The inner layer of the sealing ring is an inconelX750 wire wound spring, the middle layer is an inconel600 alloy cladding, and the outer layer is a 0.3mm pure silver sealing silver layer. The inner and outer rings of the new sealing ring have two layers of 2mm thick rubber protective layers....
Claims
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IPC IPC(8): G21C19/02G21C13/028B66D1/00
CPCG21C19/02G21C13/028B66D1/00Y02E30/30
Inventor 詹雨华孟海军陈晓强张云朋韩中才丁嘉葆
Owner CHINA GENERAL NUCLEAR POWER OPERATION