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Non-excitation strip-shaped tapping switch

A tap changer and bar-shaped technology, which is applied in the direction of electric switches, electrical component structure associations, transformers, etc., can solve the problem of low safety of switches, and achieve the effect of improving safety, improving maintenance efficiency, and facilitating maintenance

Inactive Publication Date: 2020-09-25
SHIJIAZHUANG TIANTAI POWER TRANSFORMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a non-excitation strip tap changer, which solves the problem of low safety of general switches

Method used

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  • Non-excitation strip-shaped tapping switch
  • Non-excitation strip-shaped tapping switch
  • Non-excitation strip-shaped tapping switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as Figure 1-2 As shown, a non-excitation strip tap changer includes a switch base 1, the top of the switch base 1 is provided with a transformer case cover 2 through a flange 4, the outer wall of the flange 4 is fixedly provided with a sealing ring 3, and the switch base 1 The top of the switch base 1 is fixed with a gear shaft 6, the top of the switch base 1 is fixed with a positioning seat 7, and the top of the positioning seat 7 is movably provided with a handwheel assembly 8, and a nut is movably provided between the positioning seat 7 and the handwheel assembly 8. 9.

Embodiment 2

[0028] On the basis of Example 1, such as Figure 1-3 As shown, the handwheel assembly 8 includes a lower handwheel 12 movably arranged inside the positioning seat 7 , an upper handwheel 13 is fixedly arranged on the top of the lower handwheel 12 , and a handwheel notch 14 is arranged on the outer wall of the upper handwheel 13 .

Embodiment 3

[0030] On the basis of Example 1, such as Figure 4 Shown, the front side of locating seat 7 is provided with locating nail 10 movablely.

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PUM

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Abstract

The invention relates to the technical field of non-excitation strip-shaped tapping switches. The invention further discloses a non-excitation strip-shaped tapping switch. The switch comprises a switch base. A transformer box cover is movably arranged at the top of the switch base through a flange, a sealing ring is fixedly arranged on the outer wall of the flange, a gear shaft is fixedly arrangedat the top of the switch base, a positioning base is fixedly arranged at the top of the switch base, and a hand wheel assembly is movably arranged at the top of the positioning base. According to theinvention, the problem of low safety of a common switch is solved. The number of turns of the primary coil of the transformer can be changed under the non-excitation condition of the transformer, torealize voltage adjustment of the transformer, so that the purpose of regulating the stimulation output voltage is achieved, the safety of the non-excitation strip-shaped tapping switch is improved, the reliability of the non-excitation strip-shaped tapping switch is improved, and the practicability of the non-excitation strip-shaped tapping switch is improved. A worker can conveniently maintain the non-excitation strip-shaped tapping switch.

Description

technical field [0001] The invention relates to the technical field of an off-excitation strip tap changer, in particular to an off-excitation strip tap changer. Background technique [0002] The non-excitation strip tap changer is a kind of switch. The non-excitation strip tap changer is suitable for the frequency of 50 Hz, the rated voltage level is between 10,000 volts and 30,000 volts, and the rated passing current is 10 amperes and 60 amps. In oil-immersed power transformers between three amps. Voltage is an important quality index in power system. When the power system is in normal operation, changes in voltage will cause abnormalities in the operation of electrical equipment, directly affecting production and daily life. Therefore, voltage regulation is one of the main tasks of the power system. At present, most of the switches used in the market have low safety and low reliability, and the low safety of switches is likely to cause harm to the safety of workers, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F29/04H01F27/40H01H9/02
CPCH01F27/40H01F29/04H01H9/0271
Inventor 聂振华
Owner SHIJIAZHUANG TIANTAI POWER TRANSFORMER