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Porous cylindrical energy absorbing devices and anti-whipping limiting part adopting same

An energy-absorbing device, cylindrical technology, applied in the field of anti-slamming restraints, can solve problems such as large impact force, and achieve the effect of preventing sudden buckling

Inactive Publication Date: 2011-10-26
CHINA NUCLEAR POWER ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a perforated cylindrical energy absorbing device with a better energy absorbing effect and an anti-shock limiter using this energy absorbing device in view of the characteristics of large impact force when the high energy fluid pipeline in a nuclear power plant breaks

Method used

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  • Porous cylindrical energy absorbing devices and anti-whipping limiting part adopting same
  • Porous cylindrical energy absorbing devices and anti-whipping limiting part adopting same
  • Porous cylindrical energy absorbing devices and anti-whipping limiting part adopting same

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Embodiment

[0027] A preferred embodiment of a cylindrical energy-absorbing device with a hole is provided below, taking a circular hole as an example. The diameter of the steel pipe is 219mm, the wall thickness is 22.23mm, 6 rows of round holes are opened on the steel pipe, each row has 12 holes, the diameter of the round holes is 36mm, and the upper and lower adjacent rows are staggered. 30 degree angle, such as Figure 4 shown. The steel plate is circular, with a diameter of 260mm and a thickness of 30mm. A groove with a depth of 5mm is opened on one side, and the steel pipe is embedded in the groove, and then welded and fixed. Those skilled in the art can understand that the diameter and arrangement of the circular holes can be modified according to different forces and energy to be absorbed, so as to achieve the desired effect. The design of the energy-absorbing device using the waist-shaped hole can also refer to the above parameters, and make some specific design changes, such as...

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Abstract

The invention relates to the field of energy absorbing devices, in particular to porous cylindrical energy absorbing devices and an anti-whipping limiting part adopting the same. Each energy absorbing device comprises a cylindrical pipe body and plate bodies fixed at the two ends of the cylindrical pipe body, wherein the cylindrical pipe body is provided with a plurality of pores. The anti-whipping limiting part comprises a bottom plate arranged on a civil engineering structure, wherein the bottom plate is provided with at least an energy absorbing device; and a connection plate is arranged at the other ends of the energy absorbing devices and is provided with at least an adjusting base plate. The energy absorbing devices have the following beneficial effects: the well-arranged pores are arranged on the cylindrical pipe bodies of the energy absorbing devices, so shearing surfaces are produced on the sections of the cylindrical pipe bodies, when forces in the axial directions of the pipe bodies act on the energy absorbing devices, a plurality of shearing surfaces ensure that the pipe bodies are easy to deform due to local shearing force bearing, thus absorbing the energy.

Description

technical field [0001] The invention relates to the field of energy-absorbing devices, in particular to a cylindrical energy-absorbing device with holes and an anti-shock limiter using the energy-absorbing device. Background technique [0002] There are many high-energy fluid pipelines in nuclear power plants. When performing safety analysis on them, it is necessary to consider the imaginary pipeline rupture accident, and to protect the effect caused by the accident. The slam limiter is fixed on the civil structure. Once an accident such as pipeline rupture occurs, the pipeline will instantly generate a large impact force so that the pipeline slams onto the H-type anti-swing limiter. At the same time, its energy is also absorbed by the H-type Absorbed by the cylindrical energy-absorbing device of the anti-shock limiter, thereby limiting the displacement of the pipeline. [0003] In many cases, due to the large diameter and fast flow rate of the high-energy fluid pipeline, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/02G21D1/00
CPCY02E30/00
Inventor 于勇王宏杰刘虎王付军刘伟张双旺郑修鹏
Owner CHINA NUCLEAR POWER ENG CO LTD
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