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Transverse anti-seismic test method for nuclear-grade hydraulic damper

A technology of hydraulic damper and testing method, which is applied in the testing of machine/structural components, vibration testing, measuring device, etc., to achieve the effect of reducing the difficulty of testing, easy to use, and simple to operate.

Pending Publication Date: 2021-12-10
常州格林电力机械制造有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in order to solve the problem of how to test the lateral seismic performance of the hydraulic damper, the present invention provides a nuclear-grade hydraulic damper lateral seismic test method, the damper is passed through the test tool and the test bench Phase is fixed, through the vibration of the test bench to simulate the seismic lateral vibration of the damper during the 60-year life of the nuclear power plant, and then according to the data obtained from the test, the excellent lateral seismic performance of the damper can be effectively judged

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  • Transverse anti-seismic test method for nuclear-grade hydraulic damper
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  • Transverse anti-seismic test method for nuclear-grade hydraulic damper

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Embodiment Construction

[0027] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them.

[0028] A nuclear grade hydraulic damper lateral seismic test method, comprising the following steps:

[0029] S1: Pre-inspect the size and appearance of each test fixture 100; check whether there are cracks, damaged functional parts, loose fasteners, obvious plastic deformation and other defects;

[0030] S2: Conduct a pre-inspection performance test on the performance of each test fixture 100; the performance test includes a low-speed displacement resistance test (at a speed of 0.1 to 0.3 mm / s), a locking speed test, and a release test after locking, recording low-speed displacement resistance, locking Speed ​​value, speed after locking and oil leakage;

[0031] S3: Install the damper in a test fixture 100, install...

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Abstract

The invention belongs to the technical field of hydraulic damper testing, and relates to a transverse anti-seismic test method for a nuclear-grade hydraulic damper, which comprises the following steps of S1, performing pre-inspection on the size and the appearance of each test tool; S2, performing a pre-test performance test on the performance of each test tool; s3, installing the damper in a test tool, installing the test tool on a test bed, and then enabling the test bed to conduct transverse vibration acceleration on the damper; s4, sequentially installing the damper in each test tool for the step S3, and recording the vibration frequency and amplitude of each test tool; S5, performing post-inspection on the size and the appearance of each test tool; and S6, performing a post-test performance test on the performance of each test tool. Through the test, enough data can be obtained, the excellent transverse anti-seismic performance of the damper can be effectively judged according to the data, the test difficulty is reduced, the operation is simple, and the use is convenient.

Description

technical field [0001] The invention relates to the technical field of testing hydraulic dampers, in particular to a transverse seismic testing method for nuclear-grade hydraulic dampers. Background technique [0002] Hydraulic dampers are important safety protection devices for nuclear power plant equipment and piping systems, and are widely used in nuclear power plants. [0003] Under the action of earthquake load, in addition to testing the ability of the damper to provide support for the supported equipment, it is also necessary to test the damper's own seismic capacity under the excitation of seismic acceleration. [0004] The lateral self-excited seismic load of the damper is applied in the lateral direction of the damper. Most of this load is borne by the damper cylinder, piston rod, piston seal assembly and piston cylinder seal assembly. It is difficult to calculate their respective bearing functions, especially the sealing The component is damaged under the transve...

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Application Information

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IPC IPC(8): G01M7/02
CPCG01M7/027G01M7/025Y02E30/30
Inventor 贺枫卢小青姜涛王雪晖
Owner 常州格林电力机械制造有限公司
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