JPS6173542A - Internal pressure explosion-proof mechanism for rotary electric machine - Google Patents
Internal pressure explosion-proof mechanism for rotary electric machineInfo
- Publication number
- JPS6173542A JPS6173542A JP19255584A JP19255584A JPS6173542A JP S6173542 A JPS6173542 A JP S6173542A JP 19255584 A JP19255584 A JP 19255584A JP 19255584 A JP19255584 A JP 19255584A JP S6173542 A JPS6173542 A JP S6173542A
- Authority
- JP
- Japan
- Prior art keywords
- terminal box
- electric machine
- internal pressure
- rotary electric
- explosion
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/136—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas explosion-proof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle
- H02K9/18—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle wherein the external part of the closed circuit comprises a heat exchanger structurally associated with the machine casing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は町燃注ガス？扱う危険場所に使用される回転電
機本体及び付１％−に気品収納の端子箱の内圧防爆構造
の改善にぴで９、特に、端子箱内に収納の電気品の冷却
に好適な内圧保持用空気の供給構造に関する。[Detailed Description of the Invention] [Field of Application of the Invention] Is the present invention applicable to town fuel injection gas? Pide 9 is used to improve the internal pressure explosion-proof structure of rotating electrical machine bodies and terminal boxes that are used in hazardous locations, and is especially suitable for maintaining internal pressure for cooling electrical items stored in terminal boxes. Regarding air supply structure.
防爆構造の電気品収納用端子箱内の冷却については、従
来あまり考慮されておらす、過熱による電気品のトラブ
ルが、しばしば、発生していた。Conventionally, little consideration has been given to cooling the interior of a terminal box for storing electrical components, which has an explosion-proof structure, and problems with electrical components often occur due to overheating.
これに対し、この種端子箱については、口出線の奴出し
構造に関する公報例は数多く児受けられるが、内部の冷
却に関するものｆｉａ＜、内圧防爆型としてうΔミいて
あげれば、日本特許第５８−２２０６６（内圧型回転を
機のタンク構造）が挙げられる。On the other hand, regarding this type of terminal box, there are many examples of publications regarding the structure for letting out the lead wires, but there are many publications regarding internal cooling, and if you mention it as an internal pressure explosion-proof type, the Japanese patent 58-22066 (internal pressure type rotary tank structure).
本発明の目的は、円圧防爆型回転′心機付属の端子箱内
も内圧防爆構造とし、且つ、回転電機本体の静圧差の利
用により端子箱内の通風を効果的にし、内部に収納され
ている口出線、変流器等電気品をより効果的に冷却ｏＪ
能な構造を提供するにある。The object of the present invention is to make the inside of the terminal box attached to the circular pressure explosion-proof rotary electric machine have an internal pressure explosion-proof structure, and to make the ventilation inside the terminal box effective by utilizing the static pressure difference of the rotary electric machine body, OJ more effectively cools electrical components such as lead wires and current transformers.
The aim is to provide a flexible structure.
従来の内圧防爆型口・転電機の例では、外部ケーブルと
の接続用あるいは変流器全始めとする付属電気品収納用
端子箱は、回転電機本体とは離れた別位置に配置され危
険場所に応じた防爆密閉構造あるいは端子箱独自で内圧
防爆構造を採用していた。ところが、防爆密閉構造では
付属電気品の過熱による寿命低下、又、内圧防爆構造で
も端子箱内の空気の対流が充分でなく同様な嫌いがあり
、内圧を確保しつつ対流も充分な端子箱の構造を提供す
るものである。In the case of conventional internal pressure explosion-proof terminals and converters, the terminal box for connecting external cables or storing all accessory electrical items, including current transformers, is placed in a separate location away from the rotating electrical machine itself, and is placed in a hazardous location. Explosion-proof hermetically sealed structures or internal pressure explosion-proof structures unique to the terminal box were used. However, with an explosion-proof sealed structure, the lifespan of attached electrical components is shortened due to overheating, and even with an internal pressure explosion-proof structure, the air convection inside the terminal box is not sufficient, resulting in similar disadvantages. It provides structure.
以下、本発明の一実施例？第１図から第３図により説明
する。第１図は本発明の回転電機の代表例として内圧防
爆型タービン発電機の構造を示す。The following is an example of the present invention? This will be explained with reference to FIGS. 1 to 3. FIG. 1 shows the structure of an internal pressure explosion-proof turbine generator as a representative example of the rotating electric machine of the present invention.
タービン発電機本体ｌの内部は固定子フレーム２、固定
子鉄心３、回転子４、交流励磁機５、空気冷却器６等か
ら構成されており、冷却ファン７により固定子フレーム
２内の仕切られた各部屋を矢印のように生気を流し、空
気冷却器６により固定子鉄心３をはじめ各部上冷却して
いる。固定子フレーム２の下部には端子箱８が取付けら
れており、その断面図を第２図に示すが、この端子箱内
には発電機口出＠９、変流器１０等が収納されており、
口出線９は外部ケーブル１１に所定の防爆構造を介して
接続されている。一方、本内圧防爆システムは、第３図
に示すように、加圧ブロワ１２によりタービン発電機本
体ｌ及び端子箱８へ各々給気管１３．１４により通常３
０ｇＡｑ程度の内圧？保持させるため、空気を供給して
いる。空気の漏れはその大部分は第１図に示す油切り１
５と回転子４とのすきまからの流出であプ、その量は信
頼性確保上、及び、経済上からもできるだけ少なくする
必要がある。The inside of the turbine generator main body l is composed of a stator frame 2, a stator core 3, a rotor 4, an AC exciter 5, an air cooler 6, etc., and the stator frame 2 is partitioned by a cooling fan 7. Fresh air flows through each room as shown by the arrow, and the stator core 3 and other parts are cooled by an air cooler 6. A terminal box 8 is attached to the lower part of the stator frame 2, and a cross-sectional view of the terminal box 8 is shown in FIG. Ori,
The lead wire 9 is connected to an external cable 11 via a predetermined explosion-proof structure. On the other hand, in this internal pressure explosion-proof system, as shown in FIG.
Internal pressure of about 0gAq? Air is supplied to maintain it. Most of the air leakage is from the oil drain 1 shown in Figure 1.
5 and the rotor 4, and the amount thereof must be kept as small as possible from the viewpoint of ensuring reliability and from economical viewpoints.
本発明のポイントの第一点は、第１図に於いて端子箱８
を直接固定子フレーム２の、冷却ファン７による冷却風
吐出口に相当する高圧の部屋２ａと遅過ずる位置に取付
け、この連通構造部は第２図に示す口出線支持ターミナ
ルプレート１６に数個所通風孔１６８に設けている。ポ
イントの第二点は、この端子箱８にタービン発電機本体
ｌへの給気管１３とは別に、端子箱給気管１４１を設け
ていること、更に、ポイントの第三点は、端子箱８内に
固定子フレーム２内の冷却ファン７による冷却風吸込部
の低圧の部屋２ｂと連絡する接続管１７ｉ設けたことに
ある。本実施例によれば、従来完全密閉、あるいは、内
圧保持用供給空気の漏れ量相当の対流による冷却でしか
なかった端子箱内の通風が、本発明では冷却ファンによ
る数十間の静圧差により第２図に矢印で示すように、端
子箱の通風孔１６ａｉ介して端子箱８内へ冷却空気が匠
れ、端子箱内の口出線９及び変流器ｌＯを冷却し、接続
管１７により固定子内へ戻る通風経路が形成され、しか
も、空気酊却器６の方へも、空気の一部は流れるため、
常に、端子箱内へ流れる空気は冷却されｆｃ窒気であり
、端子箱内は内圧？確保しつつ収納されている電気品も
良好に冷却される。The first point of the present invention is that the terminal box 8 in FIG.
is directly attached to the stator frame 2 at a position behind the high-pressure room 2a corresponding to the cooling air outlet by the cooling fan 7, and this communication structure is connected to the output line support terminal plate 16 shown in FIG. It is provided in the ventilation holes 168. The second point is that this terminal box 8 is provided with a terminal box air supply pipe 141 in addition to the air supply pipe 13 to the turbine generator main body l, and the third point is that A connecting pipe 17i is provided which communicates with the low pressure chamber 2b of the cooling air suction section by the cooling fan 7 in the stator frame 2. According to this embodiment, the ventilation inside the terminal box, which was conventionally completely sealed or cooled only by convection equivalent to the amount of leakage of the supply air for maintaining internal pressure, is now reduced to a static pressure difference of several tens of meters by the cooling fan. As shown by the arrow in FIG. A ventilation path is formed that returns to the stator, and a portion of the air also flows toward the air incubator 6.
The air that always flows into the terminal box is cooled and is FC nitrogen, and the internal pressure inside the terminal box is ? The electrical items stored therein are also cooled properly.
第４図は、従来のタービン発電機及び端子箱の配置を示
しｆｃ−例であシ、端子箱８は内圧防爆タービン発電＠
ｌとは離れた位置に配置され、危険場所に合致した耐圧
密閉構造のため、内部冷却は一切竹なわれていないので
端子箱内収納の電気品の寿命低下が著しかった。端子箱
をタービン発電機ｌと同様の内圧防爆構造としても、内
部の冷却は空気の漏洩量程度であり、顕著な冷却効果は
期待できない。Figure 4 shows the arrangement of a conventional turbine generator and terminal box, and is an fc-example.The terminal box 8 is an internal pressure explosion-proof turbine generator @
It was located far away from the terminal box, and had a pressure-tight sealed structure suitable for hazardous areas, so there was no internal cooling at all, which significantly shortened the lifespan of electrical components stored in the terminal box. Even if the terminal box has an internal pressure explosion-proof structure similar to that of the turbine generator 1, the internal cooling is limited to the amount of air leakage, and no significant cooling effect can be expected.
本発明によれば、電気品の過熱が防止でき寿命を延ばす
ことができるほか、端子箱までの防爆仕様の電線管ある
いは内圧保持用給気管が省略又は削減でき経済上も効果
かめる。According to the present invention, it is possible to prevent overheating of electrical components and extend their lifespan, and also to omit or reduce the need for explosion-proof electrical conduits or air supply pipes for maintaining internal pressure to the terminal box, which is also economically effective.
第１囚は本発明の一実施例の内圧防爆型タービン発電機
の縦断面図、第２図は第１図の端子箱の縦断面図、第３
図は本発明の内圧防爆システムの空気供給系統図、第４
図は従来の内圧防爆型タービン発電機及び耐圧防爆型端
子箱の配置関係の一例金示す図である。
１・・・タービン発電機本体、２・・・固定子フレーム
、３・・・固定子鉄心、４・・・回転子、５・・・交流
励磁機、６・・・空気冷却器、７・・・冷却ファン、８
・・・端子箱、９・・・口出線、ｌＯ・・・変流器、ｌ
ｌ・・・外部ケーブル、ｌ２・・・加圧ブロワ、１３・
・・発電機用給気管、１４・・・端子箱用給気Ｑｓ
ｌ ５”’前切り、１６・・・ターミ疹（口
第４０Figure 1 is a vertical sectional view of an internal pressure explosion-proof turbine generator according to an embodiment of the present invention, Figure 2 is a vertical sectional view of the terminal box in Figure 1, and Figure 3 is a vertical sectional view of the terminal box of Figure 1.
Figure 4 is an air supply system diagram of the internal pressure explosion-proof system of the present invention.
The figure shows an example of the arrangement of a conventional internal pressure explosion-proof turbine generator and a pressure-resistant explosion-proof terminal box. DESCRIPTION OF SYMBOLS 1... Turbine generator main body, 2... Stator frame, 3... Stator core, 4... Rotor, 5... AC exciter, 6... Air cooler, 7... ...Cooling fan, 8
...Terminal box, 9...Output wire, lO...Current transformer, l
l...external cable, l2...pressure blower, 13.
... Air supply pipe for generator, 14... Air supply Qs for terminal box
l 5”' front cut, 16... termi eruption (mouth no. 40)
Claims (1)
流器等付属電気品を収納した端子箱と、前記回転電機本
体及び前記端子箱へ空気を供給するための加圧ブロワ及
び給気管を設けた内圧防爆システム採用の回転電機にお
いて、 前記端子箱を直接前記回転電機本体に取付け、前記回転
電機本体及び前記端子箱へ各々加圧ファンからの給気管
を接続し、更に、前記端子箱内部と回転電機内部の冷却
ファンによる高圧部と低圧部とを独立に連通する接続管
を設けたことを特徴とする回転電機の内圧防爆構造。[Scope of Claims] 1. A rotating electrical machine main body, an electrical outlet wire to the outside, a terminal box housing accessory electrical items such as a current transformer, and supplying air to the rotating electrical machine main body and the terminal box. In a rotating electric machine adopting an internal pressure explosion-proof system equipped with a pressure blower and an air supply pipe, the terminal box is directly attached to the main body of the rotating electric machine, and the air supply pipes from the pressurizing fan are connected to the main body of the rotating electric machine and the terminal box, respectively. An internal pressure explosion-proof structure for a rotating electric machine, characterized in that a connecting pipe is provided to connect the inside of the terminal box and a high-pressure part and a low-pressure part formed by a cooling fan inside the rotary electric machine to independently communicate with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19255584A JPS6173542A (en) | 1984-09-17 | 1984-09-17 | Internal pressure explosion-proof mechanism for rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19255584A JPS6173542A (en) | 1984-09-17 | 1984-09-17 | Internal pressure explosion-proof mechanism for rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6173542A true JPS6173542A (en) | 1986-04-15 |
Family
ID=16293223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19255584A Pending JPS6173542A (en) | 1984-09-17 | 1984-09-17 | Internal pressure explosion-proof mechanism for rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6173542A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013007225A1 (en) * | 2011-07-08 | 2013-01-17 | Hanning Elekro-Werke Gmbh & Co.Kg | Electric motor |
| EP3346588A4 (en) * | 2015-08-31 | 2019-03-27 | Mitsubishi Electric Corporation | Rotating electrical machine |
-
1984
- 1984-09-17 JP JP19255584A patent/JPS6173542A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013007225A1 (en) * | 2011-07-08 | 2013-01-17 | Hanning Elekro-Werke Gmbh & Co.Kg | Electric motor |
| CN103718430A (en) * | 2011-07-08 | 2014-04-09 | 汉宁电气工厂有限责任两合公司 | Electric motor |
| CN103718430B (en) * | 2011-07-08 | 2016-05-11 | 汉宁电气工厂有限责任两合公司 | Electro-motor |
| US9494145B2 (en) | 2011-07-08 | 2016-11-15 | Hanning Elektro-Werke Gmbh & Co. Kg | Electric motor |
| EP3346588A4 (en) * | 2015-08-31 | 2019-03-27 | Mitsubishi Electric Corporation | Rotating electrical machine |
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