Unlock instant, AI-driven research and patent intelligence for your innovation.

Withdrawable switchgear with thermosiphon heat- pipe cooled bushings

A switchgear and casing plate technology, applied in the field of evaporative cooling devices, can solve the problems of unpracticality and unacceptable cost of switchgear shell size and the like

Active Publication Date: 2014-02-19
ABB (SCHWEIZ) AG
View PDF8 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former solution usually results in unacceptable cost and / or size of the switchgear enclosure
Since the side effects of arc faults are necessarily contained within the switchgear, the latter solution is not practical in many cases, including in the case of arc-resistant switchgear

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
  • Withdrawable switchgear with thermosiphon heat- pipe cooled bushings
  • Withdrawable switchgear with thermosiphon heat- pipe cooled bushings
  • Withdrawable switchgear with thermosiphon heat- pipe cooled bushings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The increased continuous current in the switching device leads to increased heat generation in the conduction elements. In particular, the critical point of temperature increase in the switchgear is the region comprising the interface between the main bushing and the main contact (described below) which is hereinafter referred to simply as the main bushing interface.

[0035] Evaporative cooling systems can often include heat pipes. The heat pipe operates to cool the first location by transferring heat from the first location to the second location through use of a working fluid. refer to figure 1 , illustrates a common arrangement of heat pipes 100 . Heat pipe 100 includes fluid conduit structure 110 connecting evaporator 120 to condenser 130 at opposite ends thereof. Working fluid 140 resides in heat pipe 100 . In operation, the evaporator 120 is in thermal contact with the first location to be cooled. The heat from the first location causes the working fluid 14...

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

A cooling apparatus for cooling a switchgear is provided. The switchgear has one or more primary contacts supported by a bushing and constructed and arranged to connect to a terminal of a circuit breaker. The cooling apparatus includes at least one evaporator associated with each primary contact, a condenser apparatus located at a higher elevation than the at least one evaporator, fluid conduit structure connecting the at least one evaporator with the condenser apparatus, and electrically insulating working fluid in at least one evaporator so as to be heated to a vapor state, with the fluid conduit structure being constructed and arranged to transfer the vapor to the condenser apparatus and to passively return condensed working fluid back to the at least one evaporator.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority from the earlier filing date of US Provisional Application No. 61 / 488,919, filed May 23, 2011, the entire contents of which are hereby incorporated by reference. technical field [0003] The invention is directed to medium and high voltage switchgear with cooling means. In particular, it is directed to an evaporative cooling device comprising a main contact with an integral evaporator chamber. Background technique [0004] In general, achieving high continuous current ratings for medium and high voltage switchgear at reasonable cost presents design challenges. The continuous current rating is determined by the heating in the switchgear conductors. The high current flow in the switchgear conductors generates heat. At certain points in the current path, eg the main bushing contacts, hot spots are created due to local high resistance. [0005] It is generally desirable ...

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): H02B1/56H02B11/12H01H9/52
CPCH01H2009/523H02B1/56H01H9/52F28D15/0266H02B11/12H01H2009/526F28D15/0275
Inventor P·考夫曼T·比勒H·M·卡兰迪卡R·帕瓦尔J·厄尔G·舒勒
Owner ABB (SCHWEIZ) AG