Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Fire protection system for valve side sleeve of extra-high voltage converter transformer and using method

A converter transformer and protection system technology, applied in fire rescue and other directions, can solve problems such as damage to parts and explosion shock waves, threat to valve hall safety, unsuitable explosion risk, etc., achieve excellent anti-reburn performance, improve safety and reliability Sexual, fast and effective extinguishing effect

Active Publication Date: 2020-06-30
应急管理部天津消防研究所 +1
View PDF11 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the bushing on the valve side breaks or explodes and catches fire, not only the transformer oil in the bushing on the valve side will leak into the valve hall to form a flowing fire, but also the oil in the converter transformer oil tank and high-level oil pillow will flow continuously under the action of gravity Input to the casing on the valve side, and further form a dynamic overflow fire and a large area of ​​flowing fire, thus threatening the safety of the entire valve hall
[0005] (2) Fires in UHV converter transformer oil tank and grid side bushings will also affect the valve hall, resulting in damage to the valve hall
[0006] The spray nozzles and fire branch pipes of automatic fire extinguishing systems such as water spray fire extinguishing systems and foam spray fire extinguishing systems are greatly affected by transformer explosions, fires, and high temperatures. Parts that are easily blown away and explosion shock waves will be damaged, resulting in failure of the overall system Therefore, it is not suitable for use in converter transformer bushings with explosion hazards
Existing water spray fire extinguishing systems, foam spray fire extinguishing systems and other automatic fire extinguishing systems have limited fire extinguishing and anti-resurgence capabilities for large-area flowing transformer oil fires. Conventional measures such as emergency oil discharge and building fire dikes are not suitable for the limited space in the valve hall. If it is used inside, it is easy to cause a large area of ​​flowing fire to spread, and damage a large number of valuable instruments and equipment in the valve hall.
[0007] It can be seen that the existing UHV converter transformer fire protection measures cannot meet the fire protection requirements of valve side bushings and valve halls, and there are great fire safety hazards. Effective fire safety protection measures are urgently needed

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
  • Fire protection system for valve side sleeve of extra-high voltage converter transformer and using method
  • Fire protection system for valve side sleeve of extra-high voltage converter transformer and using method
  • Fire protection system for valve side sleeve of extra-high voltage converter transformer and using method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.

[0035] Such as Figure 1 to Figure 4 As shown, the UHV converter transformer valve side bushing fire protection system includes an oil sump 1, a compressed air foam generating device 4, a foam main pipe 5, a partition valve 6, a compressed air foam spray system 7, and the oil sump 1 is set Right below the valve side bushing 11 and the raised seat 10 where the converter transformer penetrates into the valve hall, a support grid 2 is fixed in the middle of the oil sump 1, and a pebble layer 3 is laid on the support grid 2, and the height of the pebble layer 3 is different. less than 250mm, and the diameter of a single pebble is not less than 38mm, which is used to collect the inflowing converter transformer oil; the compressed air foam spray system 7 is directly connected with the foam main pipe 5 through the partition valve 6, and the compressed air foam...

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 fire protection system for a valve side sleeve of an extra-high voltage converter transformer and a using method. The system comprises an oil collecting pit, a compressed airfoam generating device, a foam dry tube, a zoning valve and a compressed air foam spray system. The fire protection system adopts the independent oil collecting pi filled with pebble beds, effectively retrains the valve side sleeve, a valve side lifting base and transformer oil flow spread after an accident occurs, reduces a fire scale to the greatest extent, reduces fire loss, and protects safety of adjacent facilities and a valve hall. The compressed air foam spraying system adopts a spray tube without a spray head and a branch tube, and clings to a fireproof wall, so that damages, on a foam release device, of valve side sleeve explosion impact are reduced to the greatest extent, and safety reliability of the system is improved, and therefore, the technical problem of fire control of the valve side sleeve of the extra-high voltage converter transformer is completely solved, the fire protection system can be used for the extra-high voltage converter transformer, and also can be usedfor other converter transformers.

Description

technical field [0001] The invention relates to a power transformer fire extinguishing technology, in particular to a fire protection system and a use method for a valve side bushing of an UHV converter transformer. Background technique [0002] In recent years, with the rapid development of UHV DC transmission technology, my country has taken the lead in building more than a dozen UHV DC transmission projects, with hundreds of UHV converter transformers. The UHV converter transformer is the core equipment of the UHV DC transmission project, and its safe and stable operation is the basis for the normal operation of the UHV DC transmission project. However, due to the high voltage level, large energy, large oil storage capacity, compact layout, and high operating temperature of UHV converter transformers, the risk of fire is high and the damage is great. Once a fire occurs, it will cause major economic and property losses and seriously affect the power grid. of stable operat...

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 Applications(China)
IPC IPC(8): A62C3/16A62C5/02A62C31/12
CPCA62C3/16A62C5/02A62C31/12
Inventor 胡成陈涛包志明陈旸张宪忠夏建军靖立帅
Owner 应急管理部天津消防研究所
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products