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Angle connection tensile strength test device for DC power transmission converter valve component and method

A technology of DC power transmission and tensile strength, applied in measuring devices, using stable tension/pressure to test material strength, strength characteristics, etc. simple effect

Active Publication Date: 2010-09-08
CHINA XD ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is no simple structure and low cost angle joint tensile strength test device for DC transmission converter valve components in the market at present.

Method used

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  • Angle connection tensile strength test device for DC power transmission converter valve component and method
  • Angle connection tensile strength test device for DC power transmission converter valve component and method
  • Angle connection tensile strength test device for DC power transmission converter valve component and method

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Embodiment Construction

[0018] The present invention is described in detail below through specific examples. The following examples are only used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] see Figure 1 to Figure 6 As shown, the tensile strength test device for DC transmission converter valve assembly of the present invention includes a vertical electronic universal testing machine 1 and a fixture 2; the fixture 2 includes a fork connection 21, a T-shaped connection 22, a force pin 23, a screw 24. Nut 25 and positioning pin 26.

[0020] According to the mechanical stress curve of ZL104 material ZL104 used for the angular connection 3 of the DC power transmission converter valve assembly, the material of the designed force pin 23, screw 24 and nut 25 is selected from the conventional material 40Cr steel, and the hardness after heat treatment reaches HB270- 350, and the surface roughness is 12.5. The material of the fork connection ...

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Abstract

The invention provides an angle connection tensile strength test device for a DC power transmission converter valve component and a test method thereof, which are used for testing the tensile strength of angle connection. The test device comprises a vertical electronic universal test machine and a clamp; the vertical electronic universal test machine comprises an upper hydraulic clamp and a lower hydraulic clamp; the clamp comprises a fork connection, a T-shaped connection, a stressed pin, two screw rods, two nuts and one positioning pin; and when in test, the angle connection is fixed on the electronic universal test machine through the clamp so as to perform the tensile strength test. The angle connection tensile strength test device for the DC power transmission converter valve component has simple structure and low cost. The test method is simple and easy to operate, can eliminate the shearing force caused by the deformation of the stressed pin in conventional test method, and can ensure more scientific and accurate test.

Description

technical field [0001] The invention relates to a tensile strength test device and an experimental method, in particular to an angular connection tensile strength test device and method for DC transmission converter valve components. Background technique [0002] The installation method of LTT DC transmission converter valve products is a suspension structure. According to the different voltage levels, the converter valve products are composed of several components connected in series through insulators to form a flexible connection and have anti-seismic performance. [0003] The corner connection in the product is responsible for the interlayer connection of the converter valve components, the fixing of the shield frame and the bearing of the weight of the valve tower. The corner connection is required to have good tensile properties. [0004] However, a simple-structured and low-cost corner joint tensile strength test device for DC transmission converter valve components h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/04G01M19/00G01M99/00
Inventor 胡宇行鹏别利生安友良
Owner CHINA XD ELECTRIC CO LTD
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