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High-elasticity gasket for high-voltage transmission line clamp and preparation method thereof

A technology of high-voltage transmission lines and gaskets, applied in transportation and packaging, metal processing equipment, cable suspension devices, etc., can solve problems such as damage to mechanical properties, changes in phase transition process, difficulties, etc., to reduce the degreasing temperature and avoid a large number of Oxidation, the effect of reducing processing costs

Inactive Publication Date: 2018-05-15
STATE GRID HUNAN ELECTRIC POWER COMPANY RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is more difficult to apply to highly active materials such as nickel-titanium alloys, which will easily cause a large increase in oxygen and carbon content, and NiTi 2 、Ni 4 Ti 3 The appearance of such intermediate phases will damage the mechanical properties, shift the martensitic transformation point, and change the phase transformation process.

Method used

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  • High-elasticity gasket for high-voltage transmission line clamp and preparation method thereof
  • High-elasticity gasket for high-voltage transmission line clamp and preparation method thereof
  • High-elasticity gasket for high-voltage transmission line clamp and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0025] Such as figure 1 and figure 2 As shown, the gasket is made of NiTi alloy material, where the atomic percentage of Ni is 49.5, the shape of the gasket is circular, the ratio of the height of the outer ring (H) to the height of the inner ring (h) is 1.2, and the surface of the gasket is along the diameter direction Extended to a plane, the chamfer β of the outer edge of the gasket ring is 35°, and the chamfer α of the edge of the ring hole is 30°. Figure 4 Schematic diagram of the cross-sectional structure of the high-elastic gasket used for the high-voltage transmission line clamp under the loaded state and flattened.

[0026] Its preparation method includes:

[0027] (1) Powder and binder preparation: the average particle size of the NiTi pre-alloyed powder is 15 μm, the main component is Ti-x Ni (atomic percentage), wherein x=49.5, and the total amount of impurities is 0.2wt.%. Combining water base and plastic base resin, the main components (mass percentage) are:...

Embodiment 2

[0035] The gasket is made of NiTi alloy material, in which the atomic percentage of Ni is 50.0, the gasket is in the shape of a ring, and the ratio of the height of the outer ring (H) to the height of the inner ring (h) is H / h=1.7; image 3As shown, the surface of the gasket expands into a parabolic surface along the diameter direction; the chamfer β of the outer edge of the gasket ring is 60°, and the chamfer α of the ring hole edge is 53°; other dimensions of the gasket are designed according to the actual service clamp standard.

[0036] Its preparation method includes:

[0037] (1) Powder and binder preparation: the average particle size of the NiTi pre-alloyed powder is 20 μm, the main component is Ti-x Ni (atomic percentage), wherein x=50.0, and the total amount of impurities is 0.2wt.%. Combining water base and plastic base resin, the main components (mass percentage) are: polyethylene glycol 35%, polyoxymethylene 60%, polypropylene 3%, ethylene-ethylene acetic acid cop...

Embodiment 3

[0045] The high-elastic gasket for high-voltage transmission line clip of the present invention adopts NiTi alloy material, wherein the atomic percentage of Ni is 49.8, and the gasket is in the shape of a ring, and the ratio of the height of the outer ring (H) to the height of the inner ring (h), H / h=1.8; the surface of the gasket expands into a plane along the diameter direction; the chamfer β of the outer edge of the gasket ring is 35°, and the chamfer α of the ring hole edge is 30°.

[0046] Its preparation method includes:

[0047] (1) Powder and binder preparation: the average particle size of the NiTi pre-alloyed powder is 20 μm, the main component is Ti-x Ni (atomic percentage), wherein x=49.8, and the total amount of impurities is 0.1wt.%. Combining water base and plastic base resin, the main components (mass percentage) are: polyethylene glycol 20%, polyoxymethylene 60%, polypropylene 15%, ethylene-ethylene acetic acid copolymer 5%;

[0048] (2) Mixing. Under the p...

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Abstract

The invention discloses a high-elasticity gasket for a high-voltage transmission line clamp and a preparation method of the high-elasticity gasket. The gasket adopts a NiTi alloy material, the gasketis circular in shape, the ratio of the height of the outer ring (H) and the height of the inner ring (h) is 1<H / h<=1.8, and the surface of the gasket is expanded into a plane, a parabolic curved surface or a sinusoidal function curved surface along the diameter direction, and the chamfering angle beta of the circular outer edge of the gasket and the chamfering angle alpha of the circular hole edgeare 30-60 degrees. The three-dimensional special-shaped circular ring gasket design is adopted, the special design is favorable for reducing the failure probability such as the fracture and tension crack of the periphery of the gasket in the deformation process, and through the combination with the controlling of the shape memory effect of the NiTi material, a strain compensation amount close to95% is provided for the fastening system of the high-voltage transmission line clamp; chamfering design is carried out on the edge, and the two-direction tension stress of the edge of the gasket in the deformation is reduced through the design of the angle, and the risk of edge cracking is reduced.

Description

technical field [0001] The invention relates to a high-elastic gasket for high-voltage transmission line clamps and a preparation method thereof. Background technique [0002] People's life and work are inseparable from electricity. High-voltage lines can reduce the loss of electric energy during transmission. The power transmission and transformation systems together form the connection network between the power generation end and the user end. In power transmission and transformation systems, the connection of a large number of high-voltage lines depends on various bolt-fastened conductive clamps of different specifications. With the wind and rain in the natural environment, the bolts are easy to loosen in the low-cycle cycle vibration, and the gap between the clamps increases, which causes the resistance to increase, which may cause the temperature to rise sharply until it causes a fire accident. [0003] The high elastic washer can compensate the fastening force when th...

Claims

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Application Information

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IPC IPC(8): H02G7/05C22C19/03B22F1/00B22F3/22
CPCH02G7/05C22C19/007C22C19/03B22F3/225B22F2998/10B22F2999/00B22F1/108B22F1/103B22F3/1007B22F2201/20B22F3/1025
Inventor 李文波何浩李益民李东阳
Owner STATE GRID HUNAN ELECTRIC POWER COMPANY RES INST
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