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WO1992015993A1 - Procede de traitement d'air dans un systeme ferme de transport d'air comprenant au moins une serie d'armoires d'appareillage electrique - Google Patents

Procede de traitement d'air dans un systeme ferme de transport d'air comprenant au moins une serie d'armoires d'appareillage electrique Download PDF

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Publication number
WO1992015993A1
WO1992015993A1 PCT/SE1992/000108 SE9200108W WO9215993A1 WO 1992015993 A1 WO1992015993 A1 WO 1992015993A1 SE 9200108 W SE9200108 W SE 9200108W WO 9215993 A1 WO9215993 A1 WO 9215993A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
cubicles
series
switchgear
treatment
Prior art date
Application number
PCT/SE1992/000108
Other languages
English (en)
Inventor
Rolf Edlund
Original Assignee
Asea Brown Boveri Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asea Brown Boveri Ab filed Critical Asea Brown Boveri Ab
Publication of WO1992015993A1 publication Critical patent/WO1992015993A1/fr
Priority to FI933801A priority Critical patent/FI111122B/fi
Priority to NO933089A priority patent/NO307851B1/no

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/56—Cooling; Ventilation

Definitions

  • the present invention relates to a method of treating air in electric switchgear cubicles, such as, for example, in switchgear and similar plants .
  • the air treatment means an adaptation to the requirements for temperature and quality of the air of the equipment located in the cubicles .
  • Electric or electronic equipment utilized in industrial processes, switchgear and similar use is generally enclosed in a casing of metal, usually some form of apparatus cub ⁇ icle.
  • the casing or the cubicle is utilized, inter alia, as frame for internal installation of electric components but also as protective casing for the electric equipment with respect to the effect of dust, moisture, aggressive agents etc., as well as semiprotection for reasons of personal safety.
  • the problem arises concerning the removal of heat given off by the com ⁇ ponents present in the cubicles by the power developed in these components.
  • Thermal dissipation may be arranged in many different ways, for example through radiation from the walls of the cubicles themselves, aeration of the cubicles through self-convection with the aid of ventilating openings, aeration with the aid of fans and filters, forced aeration by means of heat exchangers and conditioning by means of refrigerating machines.
  • treatment of the air in the form of, for example, cleaning or drying may become necessary in those cases where the cubicles are positioned in a fouled or moist environment.
  • cleaning may comprise filtering of the air or removal of corrosive gases from the ambient air before this air is supplied, cleaned, to the interior of the cubicles for cooling of the components located therei .
  • a cubicle series of this kind is generally designed as a series of cubicles arranged in one or more rows with the individual cubicles placed side-by-side close to each other.
  • the single- cubicle solutions according to the above are not applicable.
  • Providing each individual cubicle with its own air-treatment unit cannot be justified from an economical point of view. Instead, it is common to use an air-treatment, or as it is also called, air-conditioning plant to cool, moisten, dry or clean the air in the entire room where the cubicles in a series of cubicles are stored. With this method, it is possible to achieve the desirable cooling and/or cleaning of air to the electric equipment in the cubicles.
  • the method can also be supplemented by fans in the individual cubicles to prevent the formation of stationary hot air zones inside the cubicles.
  • Treating all the air in a room to attain the desired effect with respect to, for example, the cooling requirement or cleaning requirement is no good solution.
  • the air volume that has to be treated is large, which means that the air treatment plant must be dimensioned for an air volume which is many times larger than the air volume which really passes through the apparatus cubicles for the purposes of cooling. This renders the air treatment plant more expensive than necessary.
  • Another difficulty is that the room climate must satisfy the requirements for human comfort, since personnel may be present in the rooms mentioned. In this way it is not possible to optimize, for example, air temperature or air composition according to the primary requirements of the electric equipment.
  • the temperature of treated air supplied to the room where the apparatus cubicles are erected is nor- mally varied within an interval of a couple of degrees above or below room temperature.
  • the service life of certain components of semiconductor type is greatly temperature-dependent.
  • the allowed working temperature is normally maxi ⁇ mized in dependence on the temperature durability of the conductors and/or the insulating materials.
  • the working temperature is dependent on both the immediate ambient tern- perature and the self-heating of the apparatus during normal loading.
  • a increase of the temperature also provides an increase of the resistance of electric conductors in the equipment, which results in increased power output and a f rther increase of the temperature.
  • German Patent DE 2 537 295 For the purpose of cooling electric components in apparatus cubicles without having to treat the air in the whole of the room where the cubicle are located, it is known from German Patent DE 2 537 295 to distribute cooled air in a closed air transport system comprising a series of apparatus cubicles.
  • this specification does not show any solution to the problem of treatment of the air in the system in the case of corrosive and aggressive environments.
  • the invention comprises a method for treatment of the air in a closed air transport system in a series of electric switchgear cubicles, which are placed side-by-side and closed to the surrounding air, by means of at least one air- treatment unit common to the cubicles in order to reduce the treated air quantity.
  • the method for air treatment compri ⁇ ses passing cleaned, pressurized, possibly also cooled and/or dried air, from an air treatment unit via a common channel and further via parallel branch pipes with pressure regulating devices for regulating the air flow, directly to each individual switchgear cubicle, these switchgear cubic ⁇ les being adapted to receive the treated air, distribute the air for cooling purposes over electric equipment present in the cubicles, the distributed air being adapted to be col ⁇ lected and returned, via connections arranged between the cubicles, to the air treatment unit where an extra intake for ambient air is adapted to supply extra air to the air transport system in order to create an overpressure in the system while at the same time replacing an air loss caused by a leakage flow of air out of the cubicle series.
  • the direction of the air current through the system may be reversed.
  • the air transport system is intended to constitute protection against corrosion on electronics and conductor material in the switchgear cubicles and to increase the highest permissible output on electric components mounted in the cubicles with a minimum of air flow, necessary cooling effect and consumption of media in connection with the air treatment mentioned, which according to the known technique requires the contribution of several air treatment units for treatment of the air to the individual cubicles according to the treatment methods mentioned.
  • the temperature of the cooling air may be reduced to below room temperature, which results in increased service life of electric components in the equipment and permits a more energy dense design inside each cubicle.
  • For electric equipment it is also possible to design apparatus and elec ⁇ tric busbars for higher current ratings. Alternatively, energy losses in the system are reduced. All this can be achieved while at the same time considerably reducing the treated air volume, which entails reduced dimensions of the air treatment equipment and less costly such equipment.
  • the figure shows an example of an air transport system with an air-conditioning unit which treats the air in a series comprising four switchgear cubicles.
  • a number of switchgear cubicles la - Id are erected side-by- side. These switchgear cubicles comprise electric equipment where there is a need to remove heat. This removal of heat is carried out with air as active medium, whereby the air as the active medium is treated to attain the desired quality of this as a non-corrosive medium.
  • the treatment of the air is performed by an air-conditioning unit 2, also called air- treatment unit.
  • the treated air is passed through a main channel 3 to the switchgear cubicles la-Id after parallel distribution of the air to the cubicles by means of branch pipes 4a-4d.
  • the air quantity to each separate cubicle may be adjusted with the aid of regulating valves 5a-5d on each branch pipe 4a-4d.
  • the parallel air flows flowing through the cubicles are collected via openings 6a-6d at the bottom sides between adjoining cubicles, are collected and returned to the air treatment unit 2 via the return conduit 7.
  • the apparatus cubicles la-Id are adapted to closed air transport by all openable doors and bushings being sealed with rubber strips and rubber seals or similar means.
  • the cubicles are provided at the top or on the back with openable covers for connection to the branch pipes 4a-4d.
  • the openings 6a-6c at the bottom between the cubic ⁇ les are achieved by arranging, during installation of a cubicle series, normally tightly sealing doors to be opened in two adjoining cubicles placed side-by-side, so as to create a common opening 6a-6c for these adjoining cubicles. Through these openings, consumed treated air is passed through the respective cubicles to an opening 6d, arranged in the same way from the last cubicle Id of the cubicle series, in this case arranged for connection to the return conduit 7.
  • each cubicle la-Id can be controlled and influenced to avoid that any cubicle in the series receives too small an air flow or that backward flows occur.
  • a well-balanced air pressure into each individual cubicle by means of the regulating valves 5a-5d such a balancing can be achieved.
  • the present invention utilizes particle cleaning, gas clean ⁇ ing, dehumidification and cooling (where required) of the air which passes the air treatment unit 2 in the air trans ⁇ port system.
  • air filters are placed upstream of the other cleaning devices to capture particles, preferably in the overpressure air.
  • an absolute fil ⁇ ter is mounted, which prevents particles from the active filtering media from spreading in the air transport system.
  • Gas cleaning is performed where gases with both a high (about 5 ppm for a short time) and a low (less than 0.3 ppm) concentration are separated in an active filter, a gas cleaning filter.
  • the filtering degree is such that the concentration of filtered-away gases becomes as low as a few Ppb downstream of the filter.
  • Gases to be separated are preferably H 2 S, SO 2 , different chloride compounds, nitrogen compounds, mercaptans and ammonia.
  • the active medium for gas separation consists of a medium available on the market, such as active carbon and impregnated aluminium oxide.
  • the contact time for the gas mixing with/in the active medium is to exceed 1 second.
  • Harmful, corrosion-promoting water/moisture in the air is removed to make it possible to maintain a relatively low temperature in the cubicles and hence make possible an increased power output as well as increased service life of the electric components in the cubicles.
  • the air is cooled in the applications where this is necessary. This is done by installing a refrigerating machine in the air treatment unit 2 or by an external refrigerating medium. Tests carried out with an air transport plant according to the invention have shown surprisingly good results with regard to, for example, preventing corrosive attacks on, for example, conduction material, as copper, also in the severest environments.
  • air has been assumed to be the coolant throughout. This is, of course, not necessary. If another gas or gas mixture is desirable as coolant, there is nothing preventing this . Also the intake 9 may be supplied with other gas than ambient air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Patch Boards (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne un procédé de traitement d'air dans un système fermé de transport d'air à travers une série d'armoires d'appareillage électrique (1a-1d), accolées les unes à côté des autres et séparées de l'air ambiant, ledit traitement étant réalisé par au moins une unité de traitement d'air (2) commune aux armoires. Le procédé de traitement d'air consiste à envoyer de l'air nettoyé, pressurisé et éventuellement refroidi et/ou séché, provenant d'une unité de traitement d'air (2) par un canal commun (3) et ensuite par des tuyaux de distribution (4a-4d) parallèles, équipés de dispositifs de régulation de la pression (5a-5d) pour réguler l'écoulement d'air, directement vers chaque armoire d'appareillage électrique. Lesdites armoires sont conçues pour recevoir l'air traité, et pour répartir l'air, à des fins de refroidissement, sur les équipements électriques des armoires, l'air réparti étant recueilli et retourné, via des raccords (6a-6d) disposés dans les armoires, vers l'unité de traitement d'air (2) où une entrée supplémentaire (8) est adaptée pour fournir de l'air supplémentaire au système de transport d'air afin de créer une surpression dans le système, tout en remplaçant l'air perdu par suite des fuites au niveau de la série d'armoires. On peut inverser le sens d'écoulement de l'air.
PCT/SE1992/000108 1991-03-01 1992-02-25 Procede de traitement d'air dans un systeme ferme de transport d'air comprenant au moins une serie d'armoires d'appareillage electrique WO1992015993A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI933801A FI111122B (fi) 1991-03-01 1993-08-31 Menetelmä ilman käsittelemiseksi suljetussa ilmankuljetusjärjestelmässä, joka käsittää ainakin yhden kytkinlaitekennosarjan
NO933089A NO307851B1 (no) 1991-03-01 1993-08-31 FremgangsmÕte for behandling av luft i et lukket lufttransportsystem omfattende minst én rekke av bryteranleggsskap

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9100599A SE467945B (sv) 1991-03-01 1991-03-01 Saett foer behandling av luft vid ett slutet luftfoeringssystem innefattande minst en serie av intill varandra placerade och mot omgivningen isolerade staellverksskaap
SE9100599-1 1991-03-01

Publications (1)

Publication Number Publication Date
WO1992015993A1 true WO1992015993A1 (fr) 1992-09-17

Family

ID=20382024

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1992/000108 WO1992015993A1 (fr) 1991-03-01 1992-02-25 Procede de traitement d'air dans un systeme ferme de transport d'air comprenant au moins une serie d'armoires d'appareillage electrique

Country Status (4)

Country Link
FI (1) FI111122B (fr)
NO (1) NO307851B1 (fr)
SE (1) SE467945B (fr)
WO (1) WO1992015993A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013074804A1 (fr) * 2011-11-16 2013-05-23 Cooper Technologies Company Systèmes et procédés de suppression de surchauffe pour un boîtier électrique
WO2014088532A1 (fr) * 2012-12-03 2014-06-12 Eaton Corporation Système comprenant un équipement électrique à compensation de pression à l'intérieur d'un contenant scellé
CN104795741A (zh) * 2015-04-24 2015-07-22 杭州金知科技有限公司 一种高压配电柜的散热控制方法
WO2016180575A1 (fr) * 2015-05-11 2016-11-17 Siemens Aktiengesellschaft Module d'installation de distribution électrique
CN109066425A (zh) * 2018-09-26 2018-12-21 国网山东省电力公司海阳市供电公司 电力检修系统及检修方法
EP3671988A1 (fr) * 2018-12-19 2020-06-24 ABB Schweiz AG Installation des commutateurs hermétiquement fermée avec un seul compartiment pour disjoncteur, un déconnecteur à trois positions et une barre de bus principale.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5481429A (en) * 1991-03-18 1996-01-02 Asea Brown Boveri Ab Distribution of cooling air in switchgear cubicles
CN107221841A (zh) * 2017-06-22 2017-09-29 国网上海市电力公司 一种aeg开关机构除湿装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749981A (en) * 1971-08-23 1973-07-31 Controlled Power Corp Modular power supply with indirect water cooling
DE2537295A1 (de) * 1974-08-29 1976-04-22 Cselt Centro Studi Lab Telecom Zentralisiertes kuehlsystem zum kuehlen von gestellrahmen mit elektrischen schaltungen
FR2568712A1 (fr) * 1984-07-31 1986-02-07 Bull Sems Systeme de refroidissement a air pour armoire contenant des circuits electroniques

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749981A (en) * 1971-08-23 1973-07-31 Controlled Power Corp Modular power supply with indirect water cooling
DE2537295A1 (de) * 1974-08-29 1976-04-22 Cselt Centro Studi Lab Telecom Zentralisiertes kuehlsystem zum kuehlen von gestellrahmen mit elektrischen schaltungen
FR2568712A1 (fr) * 1984-07-31 1986-02-07 Bull Sems Systeme de refroidissement a air pour armoire contenant des circuits electroniques

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013074804A1 (fr) * 2011-11-16 2013-05-23 Cooper Technologies Company Systèmes et procédés de suppression de surchauffe pour un boîtier électrique
US8817471B2 (en) 2011-11-16 2014-08-26 Cooper Technologies Company Overheat suppression systems and methods for an electrical housing
CN104094489A (zh) * 2011-11-16 2014-10-08 库帕技术公司 电气壳体的过热抑制系统和方法
CN104094489B (zh) * 2011-11-16 2015-10-14 库帕技术公司 电气壳体的过热抑制系统和方法
WO2014088532A1 (fr) * 2012-12-03 2014-06-12 Eaton Corporation Système comprenant un équipement électrique à compensation de pression à l'intérieur d'un contenant scellé
CN104795741A (zh) * 2015-04-24 2015-07-22 杭州金知科技有限公司 一种高压配电柜的散热控制方法
WO2016180575A1 (fr) * 2015-05-11 2016-11-17 Siemens Aktiengesellschaft Module d'installation de distribution électrique
CN109066425A (zh) * 2018-09-26 2018-12-21 国网山东省电力公司海阳市供电公司 电力检修系统及检修方法
CN109066425B (zh) * 2018-09-26 2020-05-05 国网山东省电力公司海阳市供电公司 电力检修系统
EP3671988A1 (fr) * 2018-12-19 2020-06-24 ABB Schweiz AG Installation des commutateurs hermétiquement fermée avec un seul compartiment pour disjoncteur, un déconnecteur à trois positions et une barre de bus principale.

Also Published As

Publication number Publication date
NO933089D0 (no) 1993-08-31
SE9100599D0 (sv) 1991-03-01
FI111122B (fi) 2003-05-30
SE9100599L (sv) 1992-09-02
FI933801A7 (fi) 1993-08-31
FI933801A0 (fi) 1993-08-31
NO933089L (no) 1993-08-31
NO307851B1 (no) 2000-06-05
SE467945B (sv) 1992-10-05

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