Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Non-combustible liquid-immersed transformer with adjustable liquid level pressure

A technology for transformers and pressure regulation, applied in the field of transformers, to achieve the effects of convenient layout, reduced design size, and improved insulation level

Active Publication Date: 2013-07-03
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention utilizes non-combustible insulating liquid with high insulation level, and increases the liquid level pressure of the liquid in the oil tank by increasing the liquid level pressure regulating system, further improves the insulation level of the non-combustible insulating liquid, and solves the insulation problem of the transformer; The strong heat dissipation efficiency generated by the phase change heat of the evaporating liquid in the metal tube solves the cooling problem of the transformer

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Non-combustible liquid-immersed transformer with adjustable liquid level pressure
  • Non-combustible liquid-immersed transformer with adjustable liquid level pressure
  • Non-combustible liquid-immersed transformer with adjustable liquid level pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0040] like figure 1 As shown, the specific embodiment of the present invention consists of a transformer oil tank 10, a non-combustible insulating liquid 20, an iron core 30, a coil 40, a low-voltage bushing 45, a high-voltage bushing 270, a liquid level pressure regulating system, a cooling system, and a sudden pressure treatment system composition. Among them, the liquid level pressure regulating system is located above the top cover 255 of the fuel tank, including a bracket 70, a communication pipeline 80, a communication pipeline 90, an air chamber 100, a guide rail 110, a metal bellows 120, an automatic air pressure controller 130, a power supply 140, Signal line 150, air pump 160, inflation valve 170, inflation pipeline 180, pressure sensor 190, moisture absorber 223; part of the cooling system is located in the transformer oil tank 10, and a part is located outside the transformer oil tank 10, including evaporating liquid 50, gas outlet pipeline 60, Cooler air inlet 1...

Embodiment approach 2

[0060] like figure 2 As shown, the second embodiment of the present invention consists of a transformer oil tank 10, a non-combustible insulating liquid 20, an iron core 30, a coil 40, a low-voltage bushing 45, a high-voltage bushing 270, a liquid level pressure regulating system, a cooling system, and a sudden pressure treatment system composition. Among them, the liquid level pressure regulating system is located above the top cover 255 of the fuel tank, including a bracket 70, a communication pipeline 80, a communication pipeline 90, an air chamber 100, a guide rail 110, a metal bellows 120, an automatic air pressure controller 130, a power supply 140, Signal line 150, air tank 160, inflation valve 170, inflation pipeline 180, deflation valve 185, pressure sensor 190, moisture absorber 223; part of the cooling system is located in the fuel tank 10, and the other part is outside the fuel tank 10, including evaporative liquid 50. Gas outlet pipeline 60, gas outlet communica...

Embodiment approach 3

[0080] like image 3As shown, the third embodiment of the present invention consists of a transformer oil tank 10, a non-combustible insulating fluid 20, an iron core 30, a coil 40, a low-voltage bushing 45, a high-voltage bushing 270, a liquid level pressure regulating system, a cooling system, and a sudden pressure treatment system composition. Among them, the liquid level pressure regulating system is located above the top cover 255 of the fuel tank, including a bracket 70, a communication pipeline 80, a communication pipeline 90, an air chamber 100, a guide rail 110, a metal bellows 120, an inflation and discharge valve 185, and a pressure gauge 190 , moisture absorber 223; a part of the cooling system is located in the fuel tank 10, and the other part is outside the fuel tank 10, including the evaporating liquid 50, the gas outlet pipeline 60, the cooler air inlet 195, the cooler 200, the cooler liquid outlet 225, Liquid return pipeline 230 , rows of metal pipes 280 ; th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a non-combustible liquid-immersed transformer with adjustable liquid level pressure and is characterized in that an oil tank (10) is full of non-combustible insulating liquid (20) and communicated with a metal corrugated tube (120) which is arranged inside a gas chamber (100); the internal pressure of the gas chamber (100) is automatically adjusted by a gas pump (160) and a gas-filling valve (170); the liquid level pressure of the non-combustible insulating liquid (20) is changed by changing the internal pressure of the metal corrugated tube (120) to prevent the insulating liquid from boiling; when the liquid level pressure inside the oil tank (10) reaches a preset value or the rise rate of the liquid level pressure reaches a preset value, an emergency pressure relay (250) is actuated to inject the non-combustible insulating liquid (20) into a vacuum container (220), so that the internal pressure of the oil tank (10) is reduced; and the heat generated during the operation of the transformer is transferred from the non-combustible insulating liquid (20) to an evaporated liquid (50) which is held in a tube through rows of metal tubes (280), the evaporated liquid is heated to boil and vaporize, the vapor enters a cooler (200) through an gas outlet tube (60) and is cooled to form a liquid, and the liquid flows back to the rows of metal tubes (280), resulting in a cooling cycle.

Description

technical field [0001] The invention relates to a transformer, in particular to a power transformer in which the pressure of the liquid surface is adjustable and the body of the transformer is fully impregnated with non-combustible insulating liquid. Background technique [0002] Existing high-voltage and large-capacity power transformers use ordinary mineral oil as insulation and cooling medium, and ordinary transformer oil is flammable and explosive. In order to prevent the expansion of the fire scale after the transformer catches fire, many oil-immersed transformers are equipped with water spray fire extinguishing devices or oil discharge and nitrogen injection fire extinguishing devices, which expands equipment investment, and can only be remedied after the disaster, and cannot prevent the burning of mineral oil. The hidden danger of accidents remains. exist. [0003] Therefore, the development of non-combustible transformers has great social and economic benefits. How...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/14H01F27/18G05D16/20
Inventor 张国强牛文豪李康钟海峰
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com