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Sliding support used for macrotype power transformation structure

A technology of substation frame and sliding bearing, which is applied in substations, non-enclosed substations, substation/switch layout details, etc. Simple, easy-to-install effect

Active Publication Date: 2010-09-08
ZHEJIANG ELECTRIC POWER DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the current design, the effect of temperature is often solved by setting expansion joints and disconnecting super-long bent frames; but this design will increase the structure's occupied area and steel consumption

Method used

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  • Sliding support used for macrotype power transformation structure
  • Sliding support used for macrotype power transformation structure
  • Sliding support used for macrotype power transformation structure

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Experimental program
Comparison scheme
Effect test

specific Embodiment 750k

[0015] The specific embodiment of the present invention takes 750kV frame as an example:

[0016] 1. After calculation, the three-span length of the 750kV frame is 45X3=135m, and the temperature deformation (Y direction) is 61mm. According to the process requirements: the vertical (Z direction) support load at the beam end is 6T, and the horizontal (X direction) load is 9T.

[0017] 2. According to the cross-section form of the rectangular lattice beam and the stress situation, the layout diagram of the sliding bearing at the end of the beam is designed. For the four main materials of the lattice beam, a set of four sliding supports are respectively set up, and the four main materials can slide 100mm along the axis of the beam (Y direction); the lower main material can transmit X and Z bidirectional forces, The upper main material only transmits the force in the X direction.

[0018] 3. According to the sliding and force requirements, design the section and shape of the slidi...

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Abstract

The invention discloses a sliding support for a large power transformation structure frame composed of at least vertical and horizontal two spherical supports respective joint with the sliding plates of the bottom and lateral. At least a cover board is arranged on the spherical support and at least one side of the cover board and the sliding plate is respectively connected with a frame pole and abeam principal end plate. The spherical support comprises a graphite plate connected with the sliding plate, a spherical bearing on the cover board is connected with the graphite plate by a sliding disk. Bolt holes are arranged on at least one side of the sliding plate, bolts are connected with the frame pole, while bolt holes are also arranged on at least one side of the cover board and connected with the beam principal end plate, which together constitutes of connecting components of the main body. The sliding support has advantages of simple structure, convenient installation and independent sliding support inwhich the beam can again erected just after arranging the sliding support on the improved pole joints plate basically without changing the original mounting means.

Description

technical field [0001] The invention relates to a sliding support used in the design of a large-scale frame in a substation to solve the temperature stress of the large-scale substation frame. Background technique: [0002] The most common form of substations above 220kV is the outdoor open layout of equipment. In order to meet the process requirements, the frame is often designed as a long bent frame structure, and the overall length is relatively large. [0003] Temperature changes will cause objects to expand with heat and contract with cold. In the length direction of the frame members, the absolute deformation value is particularly prominent due to the accumulation in the length direction. When there is a fixed support at the end of the rod section, the rod section cannot be deformed, and it is converted into the internal force of the rod, which is called temperature stress. According to Article 3.3.4 of the "Technical Regulations on Building Structure Design of Substa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02B1/00H02B5/00
Inventor 陈驹金伟良盛晓红丘文千童建国黄达余冯仁祥安春秀徐建国钱锋
Owner ZHEJIANG ELECTRIC POWER DESIGN INST