JPH0635612Y2 - Gas insulated switchgear - Google Patents

Gas insulated switchgear

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Publication number
JPH0635612Y2
JPH0635612Y2 JP1986069248U JP6924886U JPH0635612Y2 JP H0635612 Y2 JPH0635612 Y2 JP H0635612Y2 JP 1986069248 U JP1986069248 U JP 1986069248U JP 6924886 U JP6924886 U JP 6924886U JP H0635612 Y2 JPH0635612 Y2 JP H0635612Y2
Authority
JP
Japan
Prior art keywords
line
unit
transformer
units
terminals
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.)
Expired - Lifetime
Application number
JP1986069248U
Other languages
Japanese (ja)
Other versions
JPS62182005U (en
Inventor
純美夫 下田
紘紀 奥野
昌男 里見
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissin Electric Co Ltd
Original Assignee
Nissin Electric Co Ltd
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 Nissin Electric Co Ltd filed Critical Nissin Electric Co Ltd
Priority to JP1986069248U priority Critical patent/JPH0635612Y2/en
Publication of JPS62182005U publication Critical patent/JPS62182005U/ja
Application granted granted Critical
Publication of JPH0635612Y2 publication Critical patent/JPH0635612Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【考案の詳細な説明】 〔産業上の利用分野〕 この考案は、キユービクル形のガス絶縁開閉装置に関す
る。
DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a cubicle type gas-insulated switchgear.

〔従来の技術〕[Conventional technology]

従来、キユービクル形ガス絶縁開閉装置では、2回線受
電変圧器3バンク構成の場合、配電用変電所における単
線接続が第5図に示すようになつている。
Conventionally, in the case of a quicle type gas-insulated switchgear, in the case of a two-line power receiving transformer with three banks, a single wire connection at a distribution substation is as shown in FIG.

すなわち、避雷器(LA),線路用接地開閉器(ES1),
遮断器(CB),遮断器用接地開閉器(ES2),(ES3),
主回路断路器(DS1),(DS2)等の線路側機器と、変圧
器1次側断路器(DS3),分岐用断路器(DS4)等の変圧
器1次側機器とが同一容器(1)内に収納されて線路ユ
ニツト(L1),(L2)が構成されるとともに、変圧器1
次側断路器(DS5)が容器(2)内に収納されてバンク
ユニツト(B)が構成され、各ユニツト(L1),(L
2),(B)の変圧器1次側断路器(DS3),(DS5)が
それぞれ変圧器(Tr1),(Tr2),(Tr3)の1次側端
子に接続され、両線路ユニツト(L1),(L2)のそれぞ
れの分岐用断路器(DS4)がバンクユニツト(B)の断
路器(DS5)に接続されている。なお、△はケーブルヘ
ツドを示す。
That is, lightning arrester (LA), line grounding switch (ES 1 ),
Circuit breaker (CB), earthing switch for circuit breaker (ES 2 ), (ES 3 ),
Line side devices such as the main circuit disconnector (DS 1 ) and (DS 2 ) and transformer primary side devices such as the transformer primary side disconnector (DS 3 ) and the branch disconnector (DS 4 ) The line units (L1) and (L2) are configured by being housed in the same container (1) and the transformer 1
The bank disconnect unit (B) is formed by accommodating the secondary disconnector (DS 5 ) in the container (2), and each unit (L1), (L
2), (B) transformer primary side disconnector (DS 3 ), (DS 5 ) are connected to the primary side terminals of transformers (Tr 1 ), (Tr 2 ), (Tr 3 ), respectively. The branch disconnectors (DS 4 ) of both line units (L1) and (L2) are connected to the disconnector (DS 5 ) of the bank unit (B). The symbol Δ indicates a cable head.

そして、通常は、線路ユニツト(L1)または(L2)の回
線により各変圧器(Tr1)〜(Tr3)の運転が行なわれ
る。
Then, normally, the transformers (Tr 1 ) to (Tr 3 ) are operated by the line unit (L1) or (L2).

ここで、線路ユニツト(L1),(L2)の一方、たとえば
線路ユニツト(L1)に内部事故が発生すると、第6図に
示すように、線路ユニツト(L1)とバンクユニツト
(B)間が切り離され、他方の線路ユニツト(L2)の回
線による両変圧器(Tr2),(Tr3)の運転が可能とな
る。
When an internal accident occurs in one of the line units (L1) and (L2), for example, the line unit (L1), the line unit (L1) and the bank unit (B) are disconnected as shown in FIG. This enables operation of both transformers (Tr 2 ) and (Tr 3 ) by the line of the other line unit (L2).

また、バンクユニツト(B)に内部事故が発生すると、
第7図に示すように、両線路ユニツト(L1),(L2)と
バンクユニツト(B)とのそれぞれの間が切り離される
とともに、両線路ユニツト(L1),(L2)のそれぞれの
分岐用断路器(DS4)間がバイパス線(3)により接続
され、線路ユニツト(L1)または(L2)の回線による両
変圧器(Tr1),(Tr2)の運転が可能となる。
In addition, if an internal accident occurs in Bank Unit (B),
As shown in FIG. 7, the line units (L1), (L2) and the bank unit (B) are separated from each other, and the line disconnecting units (L1), (L2) are disconnected from each other. The bypass line (3) connects between the transformers (DS 4 ), and both transformers (Tr 1 ) and (Tr 2 ) can be operated by the line unit (L1) or (L2) line.

〔考案が解決しようとする問題点〕[Problems to be solved by the invention]

しかし、前記従来のガス絶縁開閉装置によると、事故発
生時、前述したように、ユニツト間の切り離しあるいは
切り離し後のバイパス接続が必要であり、1回線受電変
圧器2バンクを復旧するに要する時間が5時間以上とな
り、事故対応性が極めて悪い欠点を有している。
However, according to the conventional gas-insulated switchgear, when an accident occurs, it is necessary to disconnect the units or the bypass connection after the disconnection as described above, and it takes time to restore the 1-line power receiving transformer 2 bank. It takes more than 5 hours and has the drawback of extremely poor accident response.

また、線路ユニツト(L1),(L2)はそれぞれ、線路側
機器と変圧器1次側機器とを同一容器(1)内に収納し
て構成されるため、配電用変電所専用となり、これを母
線構成の変電所等に使用することができず、ユニツトの
標準化が図れない欠点を有している。
In addition, since the line units (L1) and (L2) are each configured by housing the line-side device and the transformer primary-side device in the same container (1), they are dedicated to the distribution substation, and It cannot be used in a substation with a bus line structure, and it has the drawback that the unit cannot be standardized.

そこで、この考案においては、前記の点に留意し、事故
対応性の向上およびユニツトの標準化を実現し得るガス
絶縁開閉装置を提供することを技術的課題とする。
In view of the above, it is a technical object of the present invention to provide a gas-insulated switchgear capable of improving accident response and standardizing a unit in view of the above points.

〔問題点を解決するための手段〕[Means for solving problems]

この考案は、N(Nは2以上)回線受電変圧器M(Mは
3以上)バンク構成のキユービクル形ガス絶縁開閉装置
において、遮断器を含む線路側機器を容器にそれぞれ収
納して構成されたN個の線路ユニツトと、前記線路ユニ
ツトに接続される線路側端子・変圧器の1次側端子に接
続される変圧器側端子・2個の分岐用端子を有し,前記
線路側端子と他の3個の前記各端子とのそれぞれの間に
設けられた3個の断路器を容器に収納して構成されたM
個の変圧器1次ユニツトとを備え、N個の前記変圧器1
次ユニツトのそれぞれの線路側端子を前記線路ユニツト
にそれぞれ接続するとともに、M個の前記各変圧器1次
ユニツトのそれぞれの分岐用端子間を接続したものであ
る。
This invention is a cubicle type gas insulated switchgear of N (N is 2 or more) line power receiving transformer M (M is 3 or more) bank configuration, in which line side devices including a circuit breaker are housed in respective containers. It has N line units, a line side terminal connected to the line unit, a transformer side terminal connected to the primary side terminal of the transformer, and two branching terminals, and the line side terminal and others. M of the three disconnecting switches provided between each of the three disconnecting terminals and each of the three terminals
Transformer primary units, N transformers 1
Each of the line side terminals of the next unit is connected to the line unit, and the branching terminals of each of the M primary transformer units are connected.

〔作用〕[Action]

そして、この考案のガス絶縁開閉装置では、任意の線路
ユニツトもしくは任意の変圧器1次ユニツトに事故が発
生すると、この線路ユニツトに接続された変圧器1次ユ
ニツトもしくは前記任意の変圧器1次ユニツトが、他の
変圧器1次ユニツトにおける事故ユニツト側の断路器を
オフすることにより、電器的に切り離され、他の線路ユ
ニツトおよび変圧器1次ユニツトによる運転が可能とな
る。
In the gas-insulated switchgear of the present invention, when an accident occurs in any line unit or any transformer primary unit, the transformer primary unit connected to this line unit or any one of the transformer primary units is connected. However, by turning off the disconnecting switch on the side of the accident unit in the other transformer primary unit, it is electrically disconnected, and operation by another line unit and the transformer primary unit becomes possible.

〔実施例〕〔Example〕

つぎに、この考案を、その1実施例を示した第1図ない
し第3図とともに詳細に説明する。なお、前記と同一記
号は同一もしくは相当するものを示すものとする。
Next, the present invention will be described in detail with reference to FIGS. 1 to 3 showing the first embodiment. The same symbols as those used above indicate the same or corresponding ones.

これらの図面は、2回線受電変圧器3バンクの場合を示
し、(L1)′,(L2)′はそれぞれ容器(3)内に避雷
器(LA),線路用接地開閉器(ES1),遮断器(CB),
遮断器用接地開閉器(ES2),(ES3),主回路断路器
(DS1),(DS2)等の線路側機器を収納して構成された
線路ユニツトである。
The drawings illustrate the case of two-line power reception transformer 3 banks, (L1) ', (L2)' is arrester each container (3) in (LA), the line for earthing switch (ES 1), blocking Container (CB),
Breaker earthing switch (ES 2), (ES 3 ), the main circuit disconnector (DS 1), a line Yunitsuto constructed by housing the line-side devices such as (DS 2).

(B1),(B2),(B3)は3個の変圧器1次ユニツトで
あり、容器(4)に線路側端子(5),変圧器側端子
(6)および2個の分岐用端子(7),(8)を備える
とともに、容器(4)内に、線路側端子(5)と他の3
個の端子(6),(7),(8)とのそれぞれの間の主
回路に設けられた断路器(DS6),(DS7),(DS8)お
よび接地開閉器(ES4),(ES5),(ES6)を収納して
構成されている。
(B1), (B2), (B3) are three transformer primary units, and the line side terminal (5), the transformer side terminal (6) and the two branch terminals ( 7) and (8) are provided, and the line-side terminal (5) and another 3 are provided in the container (4).
Disconnectors (DS 6 ), (DS 7 ), (DS 8 ) and earthing switch (ES 4 ) provided in the main circuit between the terminals (6), (7) and (8) respectively. , (ES 5 ) and (ES 6 ) are housed.

そして、2個の変圧器1次ユニツト(B1),(B2)のそ
れぞれの線路側端子(5)が線路ユニツト(L1)′,
(L2)′に接続され、3個の変圧器1次ユニツト(B
1),(B2),(B3)のそれぞれの変圧器側端子(6)
が変圧器(Tr1),(Tr2),(Tr3)のそれぞれの1次
側端子に接続されている。
The line side terminals (5) of the two transformer primary units (B1) and (B2) are connected to the line unit (L1) ',
(L2) 'connected to three transformer primary units (B
Transformer side terminals (6) of 1), (B2) and (B3) respectively
Are connected to the primary terminals of the transformers (Tr 1 ), (Tr 2 ), and (Tr 3 ).

さらに、各変圧器1次ユニツト(B1),(B2),(B3)
のそれぞれの分岐用端子(7),(8)間がリングブス
(9),(10),(11)により接続され、ユニツト(B
1),(B2),(B3)における母線が環状に構成されて
いる。
Furthermore, each transformer primary unit (B1), (B2), (B3)
The branching terminals (7) and (8) of each are connected by ring buses (9), (10) and (11), and the unit (B
The busbars in 1), (B2), and (B3) are annular.

すなわち、遮断器(CB)を含む線路側機器と、断路器
(DS6)等の変圧器1次側機器とをそれぞれ別々の容器
(3),(4)に収納して分離し、回線数の線路ユニツ
ト(L1)′,(L2)′およびバンク数の変圧器1次ユニ
ツト(B1),(B2),(B3)とにより、2回線受電変圧
器3バンクのキユービクル形ガス絶縁開閉装置を構成し
ている。
That is, the equipment on the line side including the circuit breaker (CB) and the equipment on the primary side of the transformer such as the disconnector (DS 6 ) are housed in separate containers (3) and (4), respectively, and separated, With the line units (L1) ', (L2)' and the transformer primary units (B1), (B2), (B3) of the number of banks, a two-line power receiving transformer with three banks of a quubicle type gas insulated switchgear I am configuring.

したがつて、通常、線路ユニツト(L1)′,(L2)′が
常用,予備となり、線路ユニツト(L1)′または(L
2)′の回線により各変圧器(Tr1),(Tr2),(Tr3
の運転が行なわれる。
Therefore, the line unit (L1) 'and (L2)' are usually used and spare, and the line unit (L1) 'or (L
Each transformer (Tr 1 ), (Tr 2 ), (Tr 3 ) by the line 2) ′
Is driven.

ここで、一方の線路ユニツト(L1)′もしくはこれに接
続された変圧器1次ユニツト(B1)に事故が発生した場
合、第3図(a)に示すように、他の変圧器1次ユニツ
ト(B2),(B3)における事故ユニツト(B1)側の断路
器(DS8),(DS7)をそれぞれオフにすることにより、
他方の線路ユニツト(L2)′の回線による変圧器(T
r2),(Tr3)の運転が可能となる。
If an accident occurs in one of the line units (L1) 'or the transformer primary unit (B1) connected thereto, as shown in Fig. 3 (a), the other transformer primary unit (L1)' By turning off the disconnectors (DS 8 ) and (DS 7 ) on the accident unit (B1) side in (B2) and (B3) respectively,
Transformer (T by the line of the other line unit (L2) '
r 2 ) and (Tr 3 ) can be operated.

また、他方の線路ユニツト(L2)′もしくはこれに接続
された変圧器1次ユニツト(B2)に事故が発生した場
合、同図(b)に示すように、他の変圧器1次ユニツト
(B1),(B3)における事故ユニツト(B2)側の断路器
(DS7),(DS8)をそれぞれオフにすることにより、一
方の線路ユニツト(L1)′の回線による変圧器(T
r1),(Tr3)の運転が可能となる。
When an accident occurs in the other line unit (L2) 'or the transformer primary unit (B2) connected to it, as shown in Fig. 2B, the other transformer primary unit (B1). ), (B3 accident Yunitsuto (B2) side of the disconnector in) (DS 7), (by turning off DS 8), respectively, transformer by circuit of one line Yunitsuto (L1) '(T
r 1), it is possible to operation of (Tr 3).

さらに、変圧器1次ユニツト(B3)に事故が発生した場
合、同図(c)に示すように、他の変圧器1次ユニツト
(B1),(B2)における事故ユニツト(B3)側の断路器
(DS8),(DS7)をそれぞれオフにすることにより、線
路ユニツト(L1)′または(L2)′の回線による変圧器
(Tr1),(Tr2)の運転が可能となる。
Further, when an accident occurs in the transformer primary unit (B3), as shown in FIG. 7C, the disconnection of the other transformer primary units (B1), (B2) on the accident unit (B3) side By turning off the devices (DS 8 ) and (DS 7 ) respectively, the transformers (Tr 1 ) and (Tr 2 ) can be operated by the line unit (L1) 'or (L2)' line.

すなわち、各ユニツト(L1)′,(L2)′,(B1),
(B2),(B3)のうち、いずれのユニツトか事故でも、
系統切り換えのみで1回線受電変圧器2バンクの復旧が
可能となる。
That is, each unit (L1) ', (L2)', (B1),
In either unit or accident of (B2) and (B3),
It is possible to restore 2 banks of 1-line power receiving transformer by simply switching the system.

ところで、実施例で示したように、変圧器1次ユニツト
(B1),(B2),(B3)は3バンクに同一構造のものが
使用されるため、この種ユニツト(B1)〜(B3)の標準
化が可能であるが、線路ユニツト(L1)′,(L2)′に
おいては、これに変圧器1次側機器が含まれないため、
配電用変電所に限らず、母線構成の変電所にも線路ユニ
ツト(L1)′,(L2)′を使用することが可能である。
By the way, as shown in the embodiment, since the transformer primary units (B1), (B2) and (B3) have the same structure in three banks, these types of units (B1) to (B3) are used. Can be standardized, but in the line unit (L1) ', (L2)', since this does not include the transformer primary side device,
It is possible to use the line units (L1) 'and (L2)' not only in distribution substations but also in substations with bus lines.

すなわち、第4図(a)に示すように、線路ユニツト
(L1)′,(L2)′を単母線(BUS)に接続したり、同
図(b)に示すように、線路ユニツト(L1)′,(L
2)′をそれぞれ断路器(DS)を介して2重母線(BUS
1),(BUS2)に接続することにより、母線構成の変電
所に適用できる。
That is, as shown in FIG. 4 (a), the line units (L1) 'and (L2)' are connected to a single bus (BUS), or as shown in FIG. 4 (b), the line unit (L1) is connected. ′, (L
2) ′ via the disconnector (DS) respectively to the double bus (BUS
By connecting to 1) and (BUS2), it can be applied to a substation with a bus line configuration.

なお、前記実施例では、変圧器1次ユニツト(B1),
(B2),(B3)の線路側端子(5)および変圧器側端子
(6)を脱着構造の導体接続部とし、2個の分岐用端子
(7),(8)をケーブルヘツドとしたが、これら各端
子(5),(6),(7),(8)をすべて導体接続部
あるいはケーブルヘツドとしてもよく、またはこれらの
組み合わせとしてもよい。
In the above embodiment, the transformer primary unit (B1),
The line side terminal (5) and the transformer side terminal (6) of (B2) and (B3) were used as conductor connection parts of the detachable structure, and the two branch terminals (7) and (8) were used as cable heads. All of these terminals (5), (6), (7), (8) may be conductor connecting portions or cable heads, or a combination thereof.

〔考案の効果〕[Effect of device]

以上のように、この考案のガス絶縁開閉装置によると、
遮断器を含む線路側機器を容器に収納して構成されたN
個の線路ユニツトと、変圧器1次側機器を容器に収納し
て構成されたM個の変圧器1次ユニツトとのいずれのユ
ニツトに事故が発生しても、断路器による系統切り換え
のみで復旧が可能となり、事故対応性の向上が図れる効
果がある。
As described above, according to the gas-insulated switchgear of this invention,
N constructed by accommodating trackside equipment including a circuit breaker in a container
Even if an accident occurs in any one of the line unit and the M transformer primary unit that is configured by housing the transformer primary side device in a container, it can be restored only by switching the system by the disconnector. It becomes possible to improve the accident response.

また、線路側機器と変圧器1次側機器とを分離してそれ
ぞれ別々の容器に収納する構成であるため、Mバンクに
同一構造の変圧器1次ユニツトを使用することができ、
ユニツトの標準化が可能になる効果が得られる。
In addition, since the line-side device and the transformer primary-side device are separated and housed in separate containers, the transformer primary unit having the same structure can be used in the M bank.
The effect that standardization of the unit becomes possible is obtained.

【図面の簡単な説明】[Brief description of drawings]

第1図ないし第3図はこの考案のガス絶縁開閉装置の1
実施例を示し、第1図は単線系統図、第2図(a)およ
び(b)は正面図および平面図、第3図(a)ないし
(c)はそれぞれ事故時の動作説明用の単線系統図、第
4図(a)および(b)は線路ユニツトを母線構成の変
電所に適用した場合の単線系統図、第5図は従来例の単
線系統図、第6図および第7図はそれぞれ第5図におけ
る事故時の動作説明用の単線系統図である。 (L1)′,(L2)′……線路ユニツト、(B1),(B
2),(B3)……変圧器ユニツト、(CB)……遮断器、
(3),(4)……容器、(5)……線路側端子、
(6)……変圧器側端子、(7),(8)……分岐用端
子、(DS6),(DS7),(DS8)……断路器。
1 to 3 show a gas-insulated switchgear according to the present invention, 1
Fig. 1 shows a preferred embodiment, Fig. 1 is a single line system diagram, Figs. 2 (a) and (b) are front views and plan views, and Figs. 3 (a) to (c) are single lines for explaining the operation at the time of an accident. System diagrams, FIGS. 4 (a) and 4 (b) are single-line system diagrams when the line unit is applied to a substation with a busbar configuration, FIG. 5 is a single-line system diagram of a conventional example, and FIGS. 6 and 7 are FIG. 6 is a single line system diagram for explaining the operation at the time of an accident in FIG. 5, respectively. (L1) ', (L2)' ... Line unit, (B1), (B
2), (B3) …… Transformer unit, (CB) …… Breaker,
(3), (4) ... container, (5) ... track side terminal,
(6) ...... Transformer side terminal, (7), (8) ...... Branch terminal, (DS 6 ), (DS 7 ), (DS 8 ) ... Disconnector.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】N(Nは2以上)回線受電変圧器M(Mは
3以上)バンク構成のキユービクル形ガス絶縁開閉装置
において、遮断器を含む線路側機器を容器にそれぞれ収
納して構成されたN個の線路ユニツトと、前記線路ユニ
ツトに接続される線路側端子・変圧器の1次側端子に接
続される変圧器側端子・2個の分岐用端子を有し,前記
線路側端子と他の3個の前記各端子とのそれぞれの間に
設けられた3個の断路器を容器に収納して構成されたM
個の変圧器1次ユニツトとを備え、N個の前記変圧器1
次ユニツトのそれぞれの線路側端子を前記線路ユニツト
にそれぞれ接続するとともに、M個の前記各変圧器1次
ユニツトのそれぞれの分岐用端子間を接続したガス絶縁
開閉装置。
1. A cubicle type gas-insulated switchgear of N (N is 2 or more) line power receiving transformer M (M is 3 or more) banks, wherein line side devices including a circuit breaker are housed in respective containers. And N line units, a line side terminal connected to the line unit, a transformer side terminal connected to the primary side terminal of the transformer, and two branching terminals, and the line side terminal. An M formed by housing three disconnecting switches provided between each of the other three terminals and each of the terminals.
Transformer primary units, N transformers 1
A gas-insulated switchgear in which each line-side terminal of the next unit is connected to the line unit, and M branch terminals of each of the transformer primary units are connected.
JP1986069248U 1986-05-08 1986-05-08 Gas insulated switchgear Expired - Lifetime JPH0635612Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986069248U JPH0635612Y2 (en) 1986-05-08 1986-05-08 Gas insulated switchgear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986069248U JPH0635612Y2 (en) 1986-05-08 1986-05-08 Gas insulated switchgear

Publications (2)

Publication Number Publication Date
JPS62182005U JPS62182005U (en) 1987-11-18
JPH0635612Y2 true JPH0635612Y2 (en) 1994-09-14

Family

ID=30909803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986069248U Expired - Lifetime JPH0635612Y2 (en) 1986-05-08 1986-05-08 Gas insulated switchgear

Country Status (1)

Country Link
JP (1) JPH0635612Y2 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5420684B2 (en) * 1973-02-20 1979-07-25
JPS6210578Y2 (en) * 1978-11-25 1987-03-12
JPS55155114A (en) * 1979-05-18 1980-12-03 Omron Tateisi Electronics Co Combustion controlling device
JPS57137009U (en) * 1981-02-20 1982-08-26
JPS6055855U (en) * 1983-08-25 1985-04-19 三菱重工業株式会社 Fuel control device for dual burner nozzle

Also Published As

Publication number Publication date
JPS62182005U (en) 1987-11-18

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