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Welding joint hydrostatic test device for valve and connecting pipe of nuclear power plant and mounting method of device

A hydraulic test and nuclear power plant technology, applied in the field of nuclear power plant maintenance, to achieve high efficiency, small water consumption, and short working hours

Pending Publication Date: 2019-02-15
JIANGSU NUCLEAR POWER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a nuclear power plant valve and pipe weld hydrostatic test device and its installation method to solve the technical problems of the weld seam hydraulic test after the valve is replaced.

Method used

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  • Welding joint hydrostatic test device for valve and connecting pipe of nuclear power plant and mounting method of device
  • Welding joint hydrostatic test device for valve and connecting pipe of nuclear power plant and mounting method of device
  • Welding joint hydrostatic test device for valve and connecting pipe of nuclear power plant and mounting method of device

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Embodiment Construction

[0032] The technology of the present invention is further described below:

[0033] like Figures 1 to 5 As shown, a nuclear power plant valve and pipe weld hydraulic test device, including: sealing ring A1, several bottom plates 2, sealing ring B5, end plate 6, plug cap 8, sealing ring A pressure plate 9, several tie rods 11, sealing ring A support plate 12, base plate fastening bolts 13, several O-rings 14 and base plate connecting pins 15, a seal ring A support plate 12 is installed on the base plate 2, and a seal ring A1 is installed around the seal ring A support plate 12, so A seal ring A pressure plate 9 is fixed above the support plate 12 of the seal ring A; the opening on the seal ring A pressure plate 9 is connected to one end of the pull rod 11, and the other end of the pull rod 11 is surrounded by a seal ring B5 and an end plate 6; the pull rod 11 passes through A blocking cap 8 is arranged at one end of the end plate 6 ; an O-ring 14 is also arranged between the ...

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Abstract

The invention belongs to the technical field of maintenance of nuclear power plants and particularly relates to a welding joint hydrostatic test device for a valve and a connecting pipe of a nuclear power plant and a mounting method of the device. The device comprises a sealing ring A, a plurality of bottom plates, a sealing ring B, an end plate, plugging caps, a sealing ring A press plate, pull rods, sealing ring A support plates and O-rings, wherein the sealing ring A support plates are mounted on the bottom plates, the sealing ring A is mounted around the sealing ring A support plates, andthe sealing ring A press plate is fixed above the sealing ring A support plates; a hole of each sealing ring A press plate is connected with one end of the corresponding pull rod, the other end of each pull rod is sleeved with the sealing ring B and the end plate; each plugging cap is arranged at one end, penetrating through the corresponding end plate, of each pull rod; the O-rings are arranged between the end plates and the plugging caps.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant maintenance, and in particular relates to a nuclear power plant valve and pipe weld hydraulic pressure test device and an installation method thereof. Background technique [0002] According to the requirements of regulations and standards, the welds of the process system pipelines of nuclear power plants are classified. The inspection requirements for different grades of welds are different, and most of the nuclear grade welds need to be tested by hydraulic pressure. The valve equipment and pipeline connections of nuclear power plants are mostly welded, and these welds have been subjected to the hydraulic test of the entire process system as required during installation. [0003] However, after the operation of the nuclear power plant, as time goes by, it will encounter the problem of equipment replacement, especially the valve equipment. When replacing the valve, it is necessary to ...

Claims

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Application Information

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IPC IPC(8): G21C17/00G21C17/017
CPCG21C17/002G21C17/017Y02E30/30
Inventor 孙传福芮守龙严巍峰李建田张勇孙永平姜华崔冀郭光亮黄磊
Owner JIANGSU NUCLEAR POWER CORP
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