JP2012009486A

JP2012009486A - Stacked transformer

Info

Publication number: JP2012009486A
Application number: JP2010141496A
Authority: JP
Inventors: Noriyuki Hayashi; 則行林; Takahide Matsuo; 尚英松尾; Kazumoto Fukui; 和元福井; Kenji Nakanoue; 賢治中ノ上; Hidemasa Yamaguchi; 英正山口
Original assignee: Hitachi Industrial Equipment Systems Co Ltd
Current assignee: Hitachi Industrial Equipment Systems Co Ltd
Priority date: 2010-06-22
Filing date: 2010-06-22
Publication date: 2012-01-12

Abstract

PROBLEM TO BE SOLVED: To provide a stacked transformer which reduces a heat generation amount of an upper transformer with a simple structure and improves heat transfer performance by forming a new heat radiation path of the upper transformer.SOLUTION: The stacked transformer includes: multiple first members 11 provided in the height direction in a container 13; multiple second members 10 provided at different height positions between intermediate parts of the multiple first members; multiple transformers 3 fixed and supported by the multiple second members 10 and placed in the height direction; and third members 15, each of which extends from an upper position of each first member 11 in the horizontal direction and is fixed to a side wall of the container 13.

Description

本発明は段積み変圧器に係り、特に、巻鉄心を用いた複数個の単位変圧器を連結金具により容器内に複数個鉛直方向に積み重ね、固定する段積み変圧器に関する。 The present invention relates to a stacking transformer, and more particularly to a stacking transformer in which a plurality of unit transformers using wound cores are stacked and fixed in a container in a vertical direction by a connecting metal fitting.

巻鉄心を用いた複数個の単位変圧器を連結金具により容器内に複数個鉛直方向に積み重ね、固定する段積み変圧器としては、例えば特許文献１、２のものが知られている。 For example, Patent Documents 1 and 2 are known as stacked transformers in which a plurality of unit transformers using wound cores are stacked and fixed in a container in a vertical direction by a connecting metal fitting.

特許文献１、２の単位変圧器では、まず帯状の磁性薄鋼板を重ね巻きして四隅が円弧状となった四角環状の巻鉄心を形成し、この巻鉄心に巻線を装着し、さらに、巻鉄心の上部と下部とを上部締付け金具と下部締付け金具とによって締め付けて支持している。 In the unit transformers of Patent Documents 1 and 2, first, a belt-shaped magnetic thin steel plate is overwrapped to form a quadrangular annular core having four arcs, and a winding is attached to the wound core. An upper part and a lower part of the wound core are fastened and supported by an upper fastening bracket and a lower fastening bracket.

そのうえで段積み変圧器は、この単位変圧器を鉛直方向に積み重ねるために、上部と下部の締付け金具の他に、連結金具を使用している。連結金具は、ボルトにより締付け金具を固定しており、これにより、複数個の単位変圧器を鉛直方向に積み重ねている。また、連結金具は段積み変圧器収納容器の側壁に固定されている。そして段積み変圧器収納容器内に、鉱油等の絶縁性の冷却媒体を充填し、カバーで段積み変圧器収納容器を密封している。 In addition, the stacking transformer uses a connecting bracket in addition to the upper and lower fastening brackets in order to stack the unit transformers in the vertical direction. The connecting metal fittings are fastened with bolts, whereby a plurality of unit transformers are stacked in the vertical direction. Further, the connecting metal fitting is fixed to the side wall of the stacked transformer storage container. The stacking transformer storage container is filled with an insulating cooling medium such as mineral oil, and the stacking transformer storage container is sealed with a cover.

なお、段積み変圧器収納容器内に収納する複数個の単位変圧器の容量（すなわち大きさ）が異なる場合には、下段に大きな単位変圧器を、その下部締付け金具が容器の底部に固定されるように置き、その上段に小さな単位変圧器を配置するのが一般的である。 If the capacity (ie, size) of multiple unit transformers stored in the stacked transformer storage container is different, a large unit transformer is installed in the lower stage and its lower clamp is fixed to the bottom of the container. In general, a small unit transformer is arranged on the upper stage.

特開平８−１３０１２２号公報JP-A-8-130122 特開平１１−１４４９６８号公報Japanese Patent Laid-Open No. 11-144968

上記構成の個々の単位変圧器は、運転時に巻鉄心と巻線とからなる変圧器本体から発熱する。これを冷却するのに、冷却媒体を経由する経路と、冷却媒体を経由しない経路とがある。このうち、前者の冷却媒体を経由する経路は、冷却媒体による対流を利用するものであり、次の２つの経路により放熱している。
Ｐ１：巻線→冷却媒体→容器→外気
Ｐ２：巻線→巻鉄心→冷却媒体→容器→外気
これに対し、後者の冷却媒体を経由しない経路では、熱伝導によって熱が伝わる。この経路は、下段変圧器と上段変圧器では違っており、下段変圧器では、
Ｐ３：巻線→巻鉄心→下部締付け金具→容器底部→外気
となり、上段変圧器では、
Ｐ４：巻線→巻鉄心→下部締付け金具→下段変圧器巻鉄心、あるいは連結金具→下段変圧器下部締付け金具→容器底部→外気
となる。 Each unit transformer configured as described above generates heat from a transformer body composed of a wound core and a winding during operation. In order to cool this, there are a path through the cooling medium and a path not through the cooling medium. Of these, the former route through the cooling medium uses convection by the cooling medium and radiates heat through the following two routes.
P1: Winding-> cooling medium->container-> outside air P2: Winding-> winding core-> cooling medium->container-> outside air On the other hand, in the latter route not passing through the cooling medium, heat is transmitted by heat conduction. This path is different for the lower and upper transformers,
P3: Winding → Winding core → Lower clamp bracket → Vessel bottom → Outside air, In the upper transformer,
P4: Winding → winding iron core → lower fastening metal fitting → lower transformer winding iron core or connecting metal fitting → lower transformer lower fastening metal fitting → bottom bottom → outside air.

段積み変圧器収納容器内の上下の各単位変圧器は、以上の経路で冷却されるが、各経路での冷却性能について検証すると以下のようである。 The upper and lower unit transformers in the stacking transformer storage container are cooled by the above paths, and the cooling performance in each path is verified as follows.

下段変圧器：放熱経路Ｐ１、Ｐ２は、温度が下がり切って容器下部まで下降した冷却媒体が巻線や巻鉄心から熱を奪いながら密度が小さくなって上昇する自然対流で冷却される経路である。経路Ｐ３は、巻鉄心を支持している下部締付け金具が直接容器底部に接触しているため、熱伝導で熱が逃げやすい。 Lower transformer: The heat radiation paths P1 and P2 are paths that are cooled by natural convection in which the cooling medium that has fallen down to the lower part of the container is heated by natural convection with its density decreasing while taking heat from the windings and the wound core. . In the path P3, since the lower fastening bracket that supports the wound core is in direct contact with the bottom of the container, heat is easily escaped by heat conduction.

上段変圧器：経路Ｐ１、Ｐ２は、下段変圧器で熱を奪って温度上昇し、密度が小さくなって上段変圧器まで上がってきた冷却媒体によって、熱を奪われて冷却される。このため、上段変圧器では下段変圧器で冷却媒体が温度上昇した分だけ、自然対流による冷却性能が低下する。熱伝導による放熱経路Ｐ４は、下部締付け金具から容器底部へ熱が伝わるのに、下段変圧器に比べて、下段変圧器の巻鉄心、あるいは連結金具を余分に通過することになるので、その距離を熱が伝わる分だけ温度が高くなり、冷却性能が悪くなる。 Upper transformer: The paths P1 and P2 take heat at the lower transformer and rise in temperature, and the heat is taken away and cooled by the cooling medium that has gone down to the upper transformer as the density decreases. For this reason, in the upper stage transformer, the cooling performance by natural convection is reduced by the amount of increase in the temperature of the cooling medium in the lower stage transformer. The heat dissipation path P4 by heat conduction passes through the wound core of the lower transformer or the connecting metal fitting more than the lower transformer, although heat is transferred from the lower clamp to the bottom of the container. As the heat is transmitted, the temperature rises and the cooling performance deteriorates.

このことは、上段変圧器の冷却は、放熱経路Ｐ１、Ｐ２、Ｐ４の全てにおいて下段変圧器より悪く、巻線や巻鉄心の温度が高くなるという課題があることを意味する。 This means that the cooling of the upper transformer is worse than that of the lower transformer in all of the heat radiation paths P1, P2, and P4, and there is a problem that the temperature of the winding and the wound iron core is increased.

以上のことから本発明の目的は、簡単な構成によって上段変圧器の新たな放熱経路を形成して伝熱性能を向上させることができる段積み変圧器を提供することにある。 In view of the above, an object of the present invention is to provide a stacked transformer that can improve heat transfer performance by forming a new heat dissipation path of the upper transformer with a simple configuration.

上記目的を達成するために本発明の段積み変圧器は、容器内に高さ方向に設けられた複数の第１部材と、複数の第１部材の中間部の間の異なる高さ位置に設けられた複数の第２部材と、複数の第２部材に支持固定された複数の高さ方向の変圧器と、第１部材の上部から水平方向に延伸して容器の側壁に固定された第３部材とから構成される。 In order to achieve the above object, the stacked transformer of the present invention is provided at different height positions between a plurality of first members provided in a height direction in a container and intermediate portions of the plurality of first members. A plurality of second members formed, a plurality of transformers in the height direction supported and fixed to the plurality of second members, and a third extending horizontally from the top of the first member and fixed to the side wall of the container. It consists of members.

なお、第１部材の上部と、ここから水平方向に延伸して容器の側壁に固定される第３部材は、容器側に傾斜して設けられるのがよい。 The upper part of the first member and the third member that extends in the horizontal direction and is fixed to the side wall of the container are preferably provided to be inclined toward the container side.

また、複数の高さ方向の前記変圧器のうち、上段の変圧器の上部よりも上に位置する、第１部材と、第３部材と、第２部材の一部は、第１の部材と第２の部材を用いて変圧器を固定配置した後に、据え付けられるのがよい。 Of the plurality of transformers in the height direction, the first member, the third member, and a part of the second member that are located above the upper part of the upper transformer are the first member, After the transformer is fixedly arranged using the second member, it may be installed.

また、変圧器は、帯状の磁性薄鋼板を重ね巻きして形成された四角環状の巻鉄心と、この巻鉄心に装着された巻線とで構成された単位変圧器であって、複数の第２の部材により前記巻鉄心に締め付け、固定配置されるのがよい。 The transformer is a unit transformer composed of a square annular wound core formed by wrapping a strip-shaped magnetic thin steel sheet and a winding attached to the wound core, and a plurality of first transformers. It is good to clamp | tighten and arrange to the said wound iron core by the member of 2. FIG.

また、第１部材と、第２部材と、第３部材は鋼板で形成され、変圧器での発熱を第２部材から第１部材、第３部材を経由して容器上部に伝熱せしめるのがよい。 Further, the first member, the second member, and the third member are formed of steel plates, and heat generated by the transformer is transferred from the second member to the upper portion of the container via the first member and the third member. Good.

上記目的を達成するために本発明の段積み変圧器は、段積み変圧器収納容器の内部に高さ方向に複数設けられた連結金具と、複数の連結金具の中間部の間の異なる高さ位置に設けられた下部および上部締付け金具と、下部および上部締付け金具の間に設けられた複数の変圧器と、連結金具の上部から水平方向に延伸して段積み変圧器収納容器の側壁に固定された固定部材から構成される。 In order to achieve the above object, the stacked transformer according to the present invention includes a plurality of connecting brackets provided in the height direction inside the stacking transformer storage container and different heights between intermediate portions of the plurality of connecting brackets. The lower and upper clamps provided at the position, the multiple transformers provided between the lower and upper clamps, and the horizontal extension from the upper part of the connection brackets are fixed to the side walls of the stacked transformer storage container. It is comprised from the fixed member made.

なお、連結金具と、下部および上部締付け金具は鋼板で形成され、連結金具の幅を、上段変圧器の上部締付け金具の幅寸法とほぼ同じ寸法と成し、段積み変圧器を収容する容器の側壁に固着した平板の固定部材のほぼ全面と前記連結金具の一部が密着するように固定するのがよい。 The connecting bracket and the lower and upper clamping brackets are formed of steel plates, and the width of the coupling bracket is approximately the same as the width dimension of the upper clamping bracket of the upper transformer, and the container for housing the stacked transformers. It is good to fix so that the substantially whole surface of the fixing member of the flat plate fixed to the side wall may be in close contact with a part of the connecting metal fitting.

また、連結金具と、下部および上部締付け金具、並びに固定部材は鋼板で形成され、変圧器は、帯状の磁性薄鋼板を重ね巻きして形成された四角環状の巻鉄心と、この巻鉄心に装着された巻線とで構成された単位変圧器であり、連結金具により容器内に複数個鉛直方向に積み重ね、固定されるとともに、上段の変圧器の前記巻鉄心を支持する上部締付け金具の変形を抑制する変形防止部材を設け、段積み変圧器を収容する容器の側壁に固着した鋼板の前記固定部材のほぼ全面と変形防止部材の垂直方向に折り曲げた面が密着するように固定するのがよい。 In addition, the connecting bracket, the lower and upper clamping brackets, and the fixing member are formed of steel plates, and the transformer is attached to the wound core with a square annular wound core formed by wrapping a strip of magnetic thin steel plate. A unit transformer composed of a plurality of windings, stacked and fixed in a vertical direction in a container by connecting metal fittings, and deformed by an upper fastening metal fitting that supports the wound core of the upper transformer. It is preferable to provide an anti-deformation preventing member and fix the steel plate fixed to the side wall of the container accommodating the stacking transformer so that the substantially entire surface of the fixing member and the surface bent in the vertical direction of the anti-deformation member are in close contact with each other. .

以上説明したように本発明によれば、簡単な構成によって上段変圧器の新たな放熱経路を形成して伝熱性能を向上させることができる段積み変圧器を得ることができる。 As described above, according to the present invention, it is possible to obtain a stacked transformer capable of improving the heat transfer performance by forming a new heat dissipation path of the upper transformer with a simple configuration.

第１の実施形態による段積み変圧器の縦断概略側面を示す図。The figure which shows the vertical schematic side surface of the stacked transformer by 1st Embodiment. 図１の平面図。The top view of FIG. 第１の実施形態による段積み変圧器上部の立体構造を示す図。The figure which shows the three-dimensional structure of the upper part of the stacking transformer by 1st Embodiment. 第２の実施形態による段積み変圧器の縦断概略側面を示す図。The figure which shows the vertical outline side surface of the stacked transformer by 2nd Embodiment. 図４の平面図。The top view of FIG. 第３の実施形態による段積み変圧器の縦断概略側面を示す図。The figure which shows the vertical outline side surface of the stacked transformer by 3rd Embodiment. 図６の平面図。The top view of FIG. 第３の実施形態による段積み変圧器上部の立体構造を示す図。The figure which shows the three-dimensional structure of the upper part of the stacking transformer by 3rd Embodiment. 第４の実施形態による段積み変圧器の縦断概略側面を示す図。The figure which shows the vertical schematic side surface of the stacked transformer by 4th Embodiment. 図９の平面図。FIG. 10 is a plan view of FIG. 9. 第５の実施形態による段積み変圧器の縦断概略側面を示す図。The figure which shows the vertical outline side surface of the stacked transformer by 5th Embodiment. 図１１の平面図。The top view of FIG. 第６の実施形態による段積み変圧器の平面を示す図。The figure which shows the plane of the stacked transformer by 6th Embodiment. 第７の実施形態による段積み変圧器の平面を示す図。The figure which shows the plane of the stacked transformer by 7th Embodiment.

以下、本発明による段積み変圧器の実施の形態を図に示す変圧器に基づいて説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a stacked transformer according to the present invention will be described below based on the transformer shown in the drawings.

第１の実施形態による段積み変圧器の縦断概略側面図を図１に、その平面図を図２に、また段積み変圧器上部の立体構造を図３に示す。 FIG. 1 is a longitudinal schematic side view of the stacked transformer according to the first embodiment, FIG. 2 is a plan view thereof, and FIG. 3 is a three-dimensional structure of the upper portion of the stacked transformer.

まず図１において、例えば円筒状の段積み変圧器収納容器１３の内部には連結金具１１が少なくとも１組２枚、高さ方向に設置されている。また１組の連結金具１１の間には、下段変圧器２と上段変圧器３を垂直方向に積み重ねて固定するための下部および上部締付け金具９、１０が水平方向に配置され、ボルト１２により固定される。 First, in FIG. 1, for example, at least one set of two metal fittings 11 is installed in the height direction inside a cylindrical stacked transformer storage container 13. Further, between the pair of connecting metal fittings 11, lower and upper fastening metal fittings 9 and 10 for fixing the lower transformer 2 and the upper transformer 3 in the vertical direction are arranged in the horizontal direction and fixed by bolts 12. Is done.

ここで、垂直方向に積み重ねられた単位変圧器である下段変圧器２と上段変圧器３は、帯状の磁性薄鋼板を重ね巻きして四隅が円弧状に形成された四角環状の巻鉄心４と、この巻鉄心４に装着された巻線５とで構成された変圧器本体６を備えている。なお、下部および上部締付け金具９、１０は、積み重ねて固定する役目のほかに、単位変圧器２、３の巻鉄心４を上下から抑えつける役目もしている。 Here, the lower transformer 2 and the upper transformer 3, which are unit transformers stacked in the vertical direction, are a rectangular annular wound iron core 4 in which four corners are formed in an arc shape by overlappingly winding strip-like magnetic thin steel plates. A transformer main body 6 composed of a winding 5 attached to the wound iron core 4 is provided. In addition, the lower and upper fastening brackets 9 and 10 have a role of holding the wound cores 4 of the unit transformers 2 and 3 from above and below, in addition to the role of stacking and fixing.

なお、段積み変圧器１は、下段変圧器２と上段変圧器３を収納し、鉱油等の絶縁冷却媒体を充填する容器１３と、この容器１３を密閉する図示しないカバーとを有している。 The stacking transformer 1 includes a container 13 that houses the lower transformer 2 and the upper transformer 3 and is filled with an insulating cooling medium such as mineral oil, and a cover (not shown) that seals the container 13. .

概略以上のように構成された本実施形態の段積み変圧器１においては、特に上段変圧器３からの熱放散を効果的に行うことを目的としており、この達成のために、連結金具１１の上部に、固定部材１５を例えばボルト締めにより設置する。固定部材１５の取り付け位置は、上段変圧器３の上部締付け金具１０よりも上とされる。 In the stacked transformer 1 of the present embodiment configured as described above, the purpose is to effectively dissipate heat from the upper transformer 3 in particular. The fixing member 15 is installed on the upper part, for example, by bolting. The mounting position of the fixing member 15 is set above the upper fastening fitting 10 of the upper transformer 3.

図２の平面図に明らかなように、連結金具１１が容器１３内に垂直方向に延伸して設けられたのに対し、連結金具１１に取り付けられた固定部材１５は、上段変圧器３の上部締付け金具１０よりも上の位置で水平方向に延伸して、円筒状の容器１３と接触する。 As apparent from the plan view of FIG. 2, the connection fitting 11 is provided extending vertically in the container 13, whereas the fixing member 15 attached to the connection fitting 11 is provided at the upper part of the upper transformer 3. It extends in the horizontal direction at a position above the clamp 10 and comes into contact with the cylindrical container 13.

容器内上部の立体構成を示す図３に明らかなように、本発明の段積み変圧器１は、段積み変圧器収納容器１３の内部に高さ方向に複数設けられた連結金具１１と、複数の連結金具１１の中間部の間の異なる高さ位置に設けられた下部および上部締付け金具９、１０と、下部および上部締付け金具９、１０の間に設けられた変圧器と、連結金具１１の上部から水平方向に延伸して段積み変圧器収納容器１３の側壁に固定された固定部材１５から構成される。 As is apparent from FIG. 3 showing the three-dimensional configuration of the upper part in the container, the stacked transformer 1 of the present invention includes a plurality of connecting fittings 11 provided in the height direction inside the stacked transformer storage container 13, and a plurality of connecting brackets 11. Of the lower and upper clamping brackets 9 and 10 provided at different height positions between the intermediate portions of the coupling bracket 11, the transformer provided between the lower and upper clamping brackets 9 and 10, It is composed of a fixing member 15 extending in the horizontal direction from the top and fixed to the side wall of the stacked transformer storage container 13.

本発明は、基本的に上記の構成を備えたものであり、これをより端的に表現すると、容器内に高さ方向に設けられた複数の第１部材と、複数の第１部材の中間部の間の異なる高さ位置に設けられた複数の第２部材と、複数の第２部材に支持固定された複数の高さ方向の変圧器と、第１部材の上部から水平方向に延伸して容器の側壁に固定された第３部材とから構成される。係る本発明において、第１部材、第２部材、第３部材の各部材は、係る機能部分を備えればよいのであって、実際に装置構成するときに、これらの部材単位に部品が準備されるということではなく、係る部位を実現するために任意の部品組み合わせが可能であることはいうまでもない。 The present invention basically has the above-described configuration. To express this more simply, a plurality of first members provided in the height direction in the container, and intermediate portions of the plurality of first members A plurality of second members provided at different height positions, a plurality of height transformers supported and fixed to the plurality of second members, and extending horizontally from the top of the first member. And a third member fixed to the side wall of the container. In the present invention, each member of the first member, the second member, and the third member only needs to have such a functional part, and when the apparatus is actually configured, parts are prepared for each of these member units. It goes without saying that any combination of components is possible to realize such a part.

而して、変圧器での発熱を第２部材、第１部材、第３部材、容器、外気の経路で伝熱し、放散せしめることができ、段積み変圧器の特に上段変圧器の冷却を効果的に行うことができる。 Thus, the heat generated in the transformer can be transferred and dissipated through the path of the second member, the first member, the third member, the container, and the outside air, and the cooling of the upper-stage transformer, especially the stacking transformer, is effective. Can be done automatically.

以下の説明においては、上記の基本構成を有する段積み変圧器を構成するに当り、作業性や加工性の観点から種々工夫された幾つかの実施形態について説明する。まず、図１、図２、図３を用いて説明した第１の実施形態においては、以下のようにするのがよい。 In the following description, several embodiments variously devised from the viewpoints of workability and workability when configuring the stacked transformer having the above basic configuration will be described. First, in the first embodiment described with reference to FIGS. 1, 2, and 3, the following is preferable.

第１の実施形態において、連結金具１１は、上段変圧器３の上部締付け金具１０の幅方向寸法Ｌ１とほぼ同じ幅寸法Ｌ２を有する。また連結金具１１は、上部締付け金具１０の長手方向両端に、それぞれ下方に折り曲げられて形成された上部締付け金具１０の折り曲げ部１４と、ボルト１２によって締結されることにより、折り曲げ部１４のほぼ全面と接触し、かつ上部締付け金具１０を固定している。 In the first embodiment, the connecting fitting 11 has a width dimension L2 that is substantially the same as the width direction dimension L1 of the upper fastening fitting 10 of the upper transformer 3. Further, the connecting metal 11 is fastened to the both ends of the upper fastening metal 10 in the longitudinal direction by bending the upper fastening metal 10 bent downward and the bolts 12, so that the almost entire surface of the bent metal 14 is obtained. And the upper clamp 10 is fixed.

固定部材１５は、連結金具１１の高さ方向で上段変圧器３の上部締付け金具１０より上の全面と接触する垂直面を有する鋼板により形成され、この鋼板の容器１３の側壁に接する部分は、溶接などにより固着されている。 The fixing member 15 is formed of a steel plate having a vertical surface that is in contact with the entire surface above the upper fastening metal fitting 10 of the upper transformer 3 in the height direction of the coupling metal 11, and the portion of the steel plate that contacts the side wall of the container 13 is It is fixed by welding.

なお、図２または図３において、巻鉄心４は、外周に締付けバンド７が巻付けられて磁性薄鋼板の重ね方向に隙間が生じないように締付けられている。そして巻鉄心４は、下部の平坦部を図示しない絶縁材を介して下部締付け金具９上に乗置しており、上部の平坦部は図示しない絶縁材を介して上部締付け金具１０に支持されている。なお、７Ｓは締付けバンド７の止め具であり、１０Ａ、１０Ｂは開口部である。 2 or 3, the wound iron core 4 is tightened so that a tightening band 7 is wound around the outer periphery so that no gap is generated in the stacking direction of the magnetic steel sheets. The wound iron core 4 has a lower flat portion placed on the lower clamp 9 via an insulating material (not shown), and the upper flat portion is supported by the upper clamp 10 via an insulating material (not shown). Yes. In addition, 7S is a fastener of the fastening band 7, and 10A and 10B are openings.

本実施の形態によれば、熱放散が不十分であった上段変圧器３からの伝熱は、以下のように行われる。まず、大きな３つの経路は、先に説明したのと同じように、Ｐ１：巻線５→冷却媒体→容器１３→外気、Ｐ２：巻線５→巻鉄心４→冷却媒体→容器１３→外気、Ｐ４：巻線５→巻鉄心４→下部締付け金具９→下段変圧器巻鉄心４、あるいは連結金具１１→下段変圧器下部締付け金具→容器１３の底部→外気というものである。 According to the present embodiment, heat transfer from the upper transformer 3 where heat dissipation was insufficient is performed as follows. First, in the same manner as described above, P1: winding 5 → cooling medium → container 13 → outside air, P2: winding 5 → winding iron core 4 → cooling medium → container 13 → outside air, P4: Winding 5 → winding iron core 4 → lower clamp metal fitting 9 → lower transformer winding iron core 4 or connecting metal fitting 11 → lower transformer lower clamping metal fitting → bottom of container 13 → outside air.

これに対し、本実施形態では、さらに新たな放熱経路が形成される。即ち、図３において、巻鉄心４の上部の平坦部にほぼ全面が密着している上部締付け金具１０と、この上部締付け金具１０の長手方向両端で下方に折り曲げられた折り曲げ部１４のほぼ全面と密着している連結金具１１とが存在し、さらに、連結金具１１の上部締付け金具１０より上の全面で密着する固定部材１５が容器１３の側壁に固着されているので、Ｐ５：巻線５→巻鉄心４→上部締付け金具１０→連結金具１１→固定部材１５→容器１３→外気という新たな放熱経路が形成される。 On the other hand, in this embodiment, a new heat dissipation path is formed. That is, in FIG. 3, the upper fastening fitting 10 that is almost entirely in contact with the flat portion at the top of the wound iron core 4, and the substantially entire folding portion 14 that is bent downward at both longitudinal ends of the upper fastening fitting 10. Further, since the fixing member 15 that is in close contact with the entire surface above the upper fastening fitting 10 of the connection fitting 11 is fixed to the side wall of the container 13, P5: Winding 5 → A new heat dissipation path is formed: the wound core 4 → the upper fastening fitting 10 → the connecting fitting 11 → the fixing member 15 → the container 13 → the outside air.

このように、上段変圧器３の変圧器本体６（巻鉄心４と巻線５）から発生した熱の伝熱性能を、新たな放熱経路の追加により向上させることができる。 Thus, the heat transfer performance of the heat generated from the transformer main body 6 (the wound core 4 and the winding 5) of the upper transformer 3 can be improved by adding a new heat radiation path.

尚、必要に応じて、巻鉄心４の上部の平坦部と上部締付け金具１０との間に介在させた絶縁材の厚さや熱伝導率の高い絶縁材料を選択することで、更に伝熱性能を向上させることができる。 In addition, if necessary, by selecting an insulating material having a high thermal conductivity or a thickness of an insulating material interposed between the flat portion at the top of the wound core 4 and the upper fastening fitting 10, the heat transfer performance can be further improved. Can be improved.

次に、本発明による段積み変圧器の第２の実施の形態を図４及び図５に示す変圧器に基づいて説明する。尚、図１、図２及び図３と同一符号は同一構成部材を示すので、再度の詳細な説明は省略し、変更工夫された点を主として説明する。 Next, a second embodiment of the stacked transformer according to the present invention will be described based on the transformer shown in FIGS. The same reference numerals as those in FIGS. 1, 2 and 3 denote the same constituent members, so that detailed description thereof will be omitted, and the modified points will be mainly described.

本実施の形態において、第１の実施の形態（図１、図２、図３）と異なる構成は、高さ方向の上部締付け金具１０より上で連結金具１１を斜めに傾け、連結金具１１同士の距離が上にいくほど離れるようにし、さらに、固定部材１５にも連結金具１１と同じ傾斜を持たせた点である。 In the present embodiment, the configuration different from that of the first embodiment (FIGS. 1, 2, and 3) is that the connecting bracket 11 is inclined obliquely above the upper fastening bracket 10 in the height direction, and the connecting brackets 11 are connected to each other. In other words, the fixing member 15 has the same inclination as that of the connection fitting 11.

上記構成によれば、第１の実施の形態と同様な効果を奏するほか、上部締付け金具１０より上の連結金具１１と固定部材１５が同じ傾きを持っているので、連結金具１１と固定部材１５を相対的に上下することにより必ず接触することになり、連結金具１１と固定部材１５間は、より密着度が向上し、連結金具１１から固定部材１５を経由する放熱経路の伝熱性能をさらに向上させることができる。 According to the above configuration, the same effects as those of the first embodiment can be obtained, and the connecting metal 11 and the fixing member 15 above the upper fastening metal 10 have the same inclination. The contact between the connecting fitting 11 and the fixing member 15 is improved, and the heat transfer performance of the heat radiation path from the connecting fitting 11 via the fixing member 15 is further improved. Can be improved.

また、固定部材１５同士が上で広がっているので、連結金具１１で一体になった下段変圧器２と上段変圧器３を容器１３内に収容する作業や組立作業が容易になる。 Further, since the fixing members 15 spread upward, the work of assembling the lower-stage transformer 2 and the upper-stage transformer 3 integrated with the connecting fitting 11 in the container 13 is facilitated.

図６及び図７は、本発明による段積み変圧器の第３の実施の形態を示す変圧器の縦断概略側面と平面の図である。また、図８に本実施形態のときの段積み変圧器上部の立体構成を示す。尚、図１、図２及び図３と同一符号は同一構成部材を示すので、再度の詳細な説明は省略し、変更工夫された点を主として説明する。 FIG.6 and FIG.7 is the figure of the vertical cross section schematic and plane of a transformer which shows 3rd Embodiment of the stacked transformer by this invention. FIG. 8 shows a three-dimensional configuration of the upper part of the stacking transformer in the present embodiment. The same reference numerals as those in FIGS. 1, 2 and 3 denote the same constituent members, so that detailed description thereof will be omitted, and the modified points will be mainly described.

特に図８にその特徴がよく現れているように、本実施の形態による連結金具１１は、垂直方向の上端が上段変圧器３の上部締付け金具１０の高さ以下になっている。この場合、連結金具１１の幅寸法Ｌ２は、上段変圧器３の上部締付け金具１０の幅方向寸法Ｌ１とほぼ同じである必要はなく、ボルト１２により下部および上部締付け金具９、１０を固定するに足る幅でよい。 In particular, as shown in FIG. 8, the connection fitting 11 according to the present embodiment has an upper end in the vertical direction equal to or lower than the height of the upper fastening fitting 10 of the upper transformer 3. In this case, the width dimension L2 of the connection fitting 11 does not have to be substantially the same as the width direction dimension L1 of the upper fastening fitting 10 of the upper transformer 3, and the lower and upper fastening fittings 9, 10 are fixed by the bolts 12. The width is sufficient.

また、図８右側に上部締付け金具１０と巻鉄心４の部分のみを切り取って示すように、上段変圧器３の上部締付け金具１０は、巻鉄心４の上部の平坦部の幅方向寸法Ｌ３とほぼ同じ幅寸法Ｌ１の平坦部を有し、この平坦部の幅方向両端部からそれぞれ下方に折り曲げた脚部１０Ｌを有する。かつ、開口部が下向きで巻鉄心４の幅と同等の開口幅を有する断面コ字状に鋼板を形成したものであり、巻鉄心４の上部の平坦部に上部締付け金具１０の平坦部が圧着されている。そして、巻鉄心４の上部の平坦部に位置する締付けバンド７及びその止め具７Ｓで巻鉄心４と一緒に締付けられるように上部締付け金具１０の平坦部に２つの開口１０Ａ、１０Ｂが形成されている。 Further, as shown in the right side of FIG. 8 by cutting out only the upper clamping metal 10 and the wound core 4, the upper clamping metal 10 of the upper transformer 3 is substantially equal to the width-direction dimension L3 of the flat portion on the upper part of the wound iron core 4. It has flat portions having the same width dimension L1, and has leg portions 10L bent downward from both ends in the width direction of the flat portions. In addition, the steel plate is formed in a U-shaped cross-section with the opening facing downward and the opening width equivalent to the width of the wound core 4, and the flat portion of the upper clamp 10 is crimped to the flat portion at the top of the wound core 4. Has been. Then, two openings 10A and 10B are formed in the flat portion of the upper clamp 10 so that the tightening band 7 located on the flat portion of the upper portion of the wound core 4 and its stopper 7S can be tightened together with the wound core 4. Yes.

この上部締付け金具１０の上には、変形防止部材１６がボルト１７等の周知の締結手段によって一体に取付けられている。この変形防止部材１６は、上部締付け金具１０の平坦部とほぼ同じ寸法Ｌ４の平坦部を有し、両者は締結手段によって密着されている。勿論、締付けバンド７及びその止め具７Ｓと干渉することがないように、上部締付け金具１０と同位置の平坦部には開口１６Ｍが形成されている。このほか、変形防止部材１６には、巻鉄心４の巻回方向に沿う平坦部の長手方向両端に、上方に折り曲げられた折り曲げ部１８が形成されており、この折り曲げ部１８をボルト１９等の周知の締結手段によって固定部材１５に連結固定されている。 On the upper clamp 10, a deformation preventing member 16 is integrally attached by known fastening means such as a bolt 17. The deformation preventing member 16 has a flat portion having substantially the same dimension L4 as the flat portion of the upper fastening fitting 10, and both are in close contact with each other by fastening means. Of course, an opening 16M is formed in the flat portion at the same position as the upper fastening fitting 10 so as not to interfere with the fastening band 7 and its stopper 7S. In addition, the deformation preventing member 16 is formed with bent portions 18 that are bent upward at both ends in the longitudinal direction of the flat portion along the winding direction of the wound iron core 4. It is connected and fixed to the fixing member 15 by known fastening means.

固定部材１５は、折り曲げ部１８の延在方向の全面と接触する垂直面を有する鋼板により形成され、この鋼板の容器１３の側壁に接する部分は、溶接などにより固着されている。 The fixing member 15 is formed of a steel plate having a vertical surface that contacts the entire surface of the bent portion 18 in the extending direction, and a portion of the steel plate that contacts the side wall of the container 13 is fixed by welding or the like.

この実施形態の場合、本発明基本思想における高さ方向の第１の部材は、連結金具と、変形防止部材１６の高さ方向部分（折り曲げ部１８）などで構成され、第２の部材のうち、最上部のものは変形防止部材１６と上部締付け金具１０などで実現されていることが理解できる。先にも述べたが、本発明基本思想における各部材は、この機能実現のために種々の部品で達成されてもよい。 In the case of this embodiment, the first member in the height direction in the basic idea of the present invention is constituted by a connecting metal fitting, a height direction portion (bending portion 18) of the deformation preventing member 16, and the like. It can be understood that the uppermost part is realized by the deformation preventing member 16 and the upper fastening bracket 10. As described above, each member in the basic idea of the present invention may be achieved by various parts for realizing this function.

本実施の形態によれば、上段変圧器３において、上部締付け金具１０と変形防止部材１６とが、上部締付け金具１０のほぼ全幅に亘って密着して固定されているので、強度的には一枚の板として扱うことができ、上部締付け金具１０が容易に変形するのを防止することができる。即ち、上部締付け金具１０は、下方に折り曲げられた左右の脚部１０Ｌが補強リブ機能を有すると共に前記変形防止部材１６の板厚の追加で剛性が増加するので、長手方向に作用する曲げ応力に対する変形を抑制することができる。 According to the present embodiment, in the upper transformer 3, the upper fastening fitting 10 and the deformation preventing member 16 are fixed in close contact over substantially the entire width of the upper fastening fitting 10, so that the strength is one. It can be handled as a single plate, and the upper clamp 10 can be prevented from being easily deformed. That is, the upper fastening bracket 10 has the right and left leg portions 10L bent downward and has a reinforcing rib function, and the rigidity is increased by adding the plate thickness of the deformation preventing member 16, so that the bending force acting in the longitudinal direction is prevented. Deformation can be suppressed.

また、幅方向の曲げ応力に対しては、変形防止部材１６の板厚の追加と共に変形防止部材１６の折り曲げ部１８の補強リブ機能によって変形を抑制することができる。その結果、上段変圧器３の巻鉄心４がこれら上部締付け金具１０と変形防止部材１６とによって強固に容器１３内に支持されることになるので、輸送時はもとより短絡や励磁突入によって巻鉄心４が外力を受けて変形したり、ずれたりすることが防止できる。したがって、巻鉄心４の変形による無負荷損失を低減でき、無負荷損失により発生する巻鉄心４の発熱量を減少できる。 Further, with respect to the bending stress in the width direction, the deformation can be suppressed by adding the plate thickness of the deformation preventing member 16 and the reinforcing rib function of the bent portion 18 of the deformation preventing member 16. As a result, the wound core 4 of the upper transformer 3 is firmly supported in the container 13 by the upper fastening fitting 10 and the deformation preventing member 16, so that the wound core 4 is not only transported but also short-circuited or excited. Can be prevented from being deformed or displaced due to external force. Therefore, no-load loss due to deformation of the wound core 4 can be reduced, and the amount of heat generated by the wound core 4 due to the no-load loss can be reduced.

さらに、本実施形態でも、新たな放熱経路が形成されている。即ち、巻鉄心４の上部の平坦部にほぼ全面が密着している上部締付け金具１０と、この上部締付け金具１０の平坦部にほぼ全面が密着している平坦部を有する変形防止部材１６が存在し、これら両平坦部の接触面積に比例した巻鉄心４の熱量を伝えることができるので、これらから固定部材１５を経由して容器１３に熱を伝えて外気に放熱するという新たな放熱経路が形成される。 Furthermore, a new heat radiation path is also formed in this embodiment. That is, there is an upper fastening bracket 10 that is almost entirely in contact with the flat portion at the top of the wound iron core 4 and a deformation preventing member 16 that has a flat portion that is almost entirely in contact with the flat portion of the upper fastening fitting 10. In addition, since the amount of heat of the wound core 4 proportional to the contact area between these two flat portions can be transmitted, a new heat dissipation path for transmitting heat from these to the container 13 via the fixing member 15 and dissipating heat to the outside air is provided. It is formed.

このように、上段変圧器３の変圧器本体６（巻鉄心４と巻線５）からの発熱量を減少させるとともに、上段変圧器３の新たな放熱経路の追加により伝熱性能を向上させることができる。 In this way, the heat generation from the transformer body 6 (the wound core 4 and the winding 5) of the upper transformer 3 is reduced, and the heat transfer performance is improved by adding a new heat radiation path of the upper transformer 3. Can do.

この実施形態によれば、変形防止部材１６と固定部材１５からなる構造物を、変圧器本体（変圧器と連結部材と、上下の締付け金具から成る）を容器１３内に収納後、別途据え付けることができるので、製造、据付面での効果が大きい。 According to this embodiment, the structure composed of the deformation preventing member 16 and the fixing member 15 is separately installed after the transformer main body (comprising the transformer, the connecting member, and the upper and lower clamps) is stored in the container 13. Therefore, the effect on manufacturing and installation is great.

図９及び図１０は、本発明による段積み変圧器の第４の実施の形態を示す変圧器である。尚、図６、図７及び図８と同一符号は同一構成部材を示すので、再度の詳細な説明は省略し、変更工夫された点を主として説明する。 9 and 10 are transformers showing a fourth embodiment of the stacked transformer according to the present invention. The same reference numerals as those in FIGS. 6, 7 and 8 denote the same constituent members, so detailed description thereof will be omitted, and the modified points will be mainly described.

本実施の形態において、第３の実施の形態（図６、図７及び図８）と異なる構成は、図１０に特徴が現れているように、上部締付け金具１０と変形防止部材１６とのそれぞれに、２つの開口１６Ａ、１６Ｂを開口させ、この開口１６Ａ、１６Ｂに締付けバンド７を貫通させて上部締付け金具１０と変形防止部材１６ごと巻鉄心４を締付け、止め具７Ｓで固定した点である。 In the present embodiment, the configuration different from that of the third embodiment (FIGS. 6, 7 and 8) is that each of the upper fastening fitting 10 and the deformation preventing member 16 has a characteristic as shown in FIG. Further, two openings 16A and 16B are opened, the fastening band 7 is passed through the openings 16A and 16B, the upper iron fitting 10 and the deformation preventing member 16 are tightened together with the wound iron core 4, and fixed with a stopper 7S. .

上記構成によれば、第３の実施の形態と同様な効果を奏するほか、上部締付け金具１０と変形防止部材１６とが巻鉄心４に共締めされているので、巻鉄心４はより強固に固定されることになり、その結果、無負荷損失による巻鉄心４の発熱をさらに抑制することができる。勿論、上部締付け金具１０と変形防止部材１６とが巻鉄心４へ共締めされることで、変形防止部材１６−上部締付け金具１０−巻鉄心４間は、より密着度が向上し、変形防止部材１６を経由する放熱経路の伝熱性能をさらに向上させることができる。 According to the above configuration, the same effect as that of the third embodiment can be obtained, and the upper fastening fitting 10 and the deformation preventing member 16 are fastened together with the wound core 4, so that the wound core 4 is more firmly fixed. As a result, heat generation of the wound core 4 due to no-load loss can be further suppressed. Of course, when the upper clamp 10 and the deformation prevention member 16 are fastened together to the wound iron core 4, the degree of adhesion between the deformation prevention member 16 and the upper clamp 10 and the wound iron core 4 is further improved, and the deformation prevention member. The heat transfer performance of the heat dissipation path via 16 can be further improved.

図１１及び図１２は、本発明による第５の実施の形態を示す変圧器である。今までと同様に、同一符号は同一構成部材を示すので、再度の詳細な説明は省略し、変更工夫された点を主として説明する。 11 and 12 are transformers showing a fifth embodiment according to the present invention. As in the past, the same reference numerals indicate the same constituent members, so detailed description thereof will be omitted, and the modified points will be mainly described.

本実施の形態において、第４の実施の形態と異なる構成は、上部締付け金具１０を変形防止部材２０で兼用した点である。 In the present embodiment, the configuration different from the fourth embodiment is that the upper fastening fitting 10 is also used as the deformation preventing member 20.

即ち、本実施の形態による変形防止部材２０は、巻鉄心４の上部の平坦部の幅方向寸法とほぼ同じ寸法を有する平坦部を有し、この平坦部の幅方向両端部からそれぞれ下方に折り曲げられた脚部２１を有し、前記平坦部の長手方向両端部をそれぞれ上方に折り曲げられた折り曲げ部２２を有している。 That is, the deformation preventing member 20 according to the present embodiment has a flat portion having substantially the same dimension as the width direction of the flat portion on the upper part of the wound core 4, and is bent downward from both ends in the width direction of the flat portion. And a bent portion 22 in which both ends in the longitudinal direction of the flat portion are bent upward.

しかし、上部締付け金具１０を変形防止部材２０で兼用したため、上部締付け金具１０の長手方向両端に、下方に折り曲げられた折り曲げ部１４を形成できない。それで、連結金具１１を高さ方向に変形防止部材２０の平坦部より上に伸ばして変形防止部材２０の折り曲げ部２２とボルト１２で締結し、変形防止部材２０を連結金具１１に固定している。また、固定部材１５は、連結金具１１と重ならないように連結金具１１を上に伸ばした分だけ下端を上方へずらしている。 However, since the upper clamp 10 is also used as the deformation preventing member 20, the bent portions 14 that are bent downward cannot be formed at both longitudinal ends of the upper clamp 10. Therefore, the connecting fitting 11 is extended in the height direction above the flat portion of the deformation preventing member 20 and fastened with the bent portion 22 of the deformation preventing member 20 and the bolt 12, and the deformation preventing member 20 is fixed to the connecting fitting 11. . In addition, the lower end of the fixing member 15 is shifted upward so that the connecting member 11 extends upward so as not to overlap the connecting member 11.

このように構成することで、変形防止部材２０は、長手方向に対する曲げ応力に対しては脚部２１が補強リブ機能を発揮し、幅方向に対する曲げ応力に対しては折り曲げ部２２が補強リブ機能を発揮するので、巻鉄心４が外力を受けたり、ずれたりすることを防止することができる。その結果、巻鉄心４の変形による無負荷損失を低減でき、無負荷損失により発生する巻鉄心４の発熱量を減少できる。したがって、本実施の形態においては前記各実施の形態と同等の効果を奏することができる。 With this configuration, in the deformation preventing member 20, the leg portion 21 exhibits a reinforcing rib function with respect to a bending stress in the longitudinal direction, and the bending portion 22 functions as a reinforcing rib function with respect to a bending stress in the width direction. Therefore, it is possible to prevent the wound core 4 from receiving or shifting from the external force. As a result, the no-load loss due to the deformation of the wound core 4 can be reduced, and the amount of heat generated by the wound core 4 due to the no-load loss can be reduced. Therefore, the present embodiment can provide the same effects as those of the above embodiments.

さらに、変形防止部材２０が上部締付け金具１０を兼用することで、部品数を低減することができ、また、巻鉄心４の熱を直接変形防止部材２０に伝えられるので、変形防止部材２０を経由する放熱経路の伝熱性能をさらに向上させることができる。 Furthermore, since the deformation preventing member 20 also serves as the upper clamp 10, the number of parts can be reduced, and the heat of the wound core 4 can be directly transmitted to the deformation preventing member 20. It is possible to further improve the heat transfer performance of the heat dissipation path.

この実施形態によれば、板材の折り曲げにより変形防止部材２０が形成できるので、加工性の面での効果が大きい。 According to this embodiment, since the deformation preventing member 20 can be formed by bending a plate material, the effect in terms of workability is great.

図１３は、本発明による第６の実施の形態を示す変圧器である。これらの図においても同一符号は同一構成部材を示すので、再度の詳細な説明は省略し、変更工夫された点を主として説明する。 FIG. 13 is a transformer showing a sixth embodiment according to the present invention. In these drawings, since the same reference numerals indicate the same components, detailed description thereof will be omitted, and the modified points will be mainly described.

本実施の形態において、第３の実施の形態と異なる構成は、第３の実施の形態において容器１３と固定部材１５とによって形成される空間を中実の固定部材２３とした点である。この固定部材２３は、たとえば溶接などの周知の固定手段によって容器１３の内周壁に固定されるものである。 In the present embodiment, a different configuration from the third embodiment is that the space formed by the container 13 and the fixing member 15 in the third embodiment is a solid fixing member 23. The fixing member 23 is fixed to the inner peripheral wall of the container 13 by known fixing means such as welding.

このように構成することで、第３の実施の形態と同等の効果を奏するほか、巻鉄心４から上部締付け金具１０と変形防止部材１６を経由して伝わってきた熱の容器１３への伝熱面積を増加できるので、より伝熱性能を向上させることができる。 With this configuration, the same effect as that of the third embodiment can be obtained, and heat transferred from the wound iron core 4 through the upper fastening fitting 10 and the deformation preventing member 16 to the container 13 can be transferred. Since the area can be increased, the heat transfer performance can be further improved.

図１４は、本発明による第７の実施の形態を示す変圧器である。同一符号は同一構成部材を示すので、再度の詳細な説明は省略する。 FIG. 14 is a transformer showing a seventh embodiment according to the present invention. Since the same reference numerals indicate the same constituent members, detailed description thereof is omitted.

本実施の形態において、第３の実施の形態と異なる構成は、第３の実施の形態において変形防止部材１６の折り曲げ部１８の全面を容器１３に全面接触させた状態で固定した点である。そのために、容器１３は上部締付け金具１０と変形防止部材１６の長手方向に対向する位置に平坦壁２４を形成しており、この平坦壁２４に溶接などの周知の固定手段で変形防止部材１６の折り曲げ部１８を固定している。 In the present embodiment, the configuration different from the third embodiment is that the entire surface of the bent portion 18 of the deformation preventing member 16 is fixed in a state where the entire surface is in contact with the container 13 in the third embodiment. For this purpose, the container 13 has a flat wall 24 formed at a position opposite to the longitudinal direction of the upper clamp 10 and the deformation preventing member 16, and the deformation preventing member 16 is fixed to the flat wall 24 by known fixing means such as welding. The bent portion 18 is fixed.

尚、周知の固定手段として図１４に示すように、ボルト１９を用いて平坦壁２４に折り曲げ部１８を固定する際、平坦壁２４にボルト貫通穴を形成しなければならない。しかしながら、ボルト貫通穴を形成した場合、容器１３内に充填した鉱油等の絶縁冷却媒体がボルト貫通穴から漏洩することが考えられる。そのような場合には、容器１３の外側に袋ナット２５を溶接で固定することで、絶縁冷却媒体の漏洩を防止することができる。 As shown in FIG. 14, as a well-known fixing means, when the bent portion 18 is fixed to the flat wall 24 using the bolt 19, a bolt through hole must be formed in the flat wall 24. However, when the bolt through hole is formed, it is conceivable that an insulating cooling medium such as mineral oil filled in the container 13 leaks from the bolt through hole. In such a case, leakage of the insulating cooling medium can be prevented by fixing the cap nut 25 to the outside of the container 13 by welding.

このように構成することで、第６の実施の形態と同じ効果を奏することができる。 By configuring in this way, the same effects as in the sixth embodiment can be obtained.

ところで、以上の各実施の形態に例示された放熱対策については、単独で採用してもよいが、組み合わせて採用することができる。複数の対策を組み合わせることで、段積み変圧器の冷却効率を一層向上させることができる。 By the way, about the heat dissipation countermeasure illustrated by each above-mentioned embodiment, although you may employ | adopt independently, it can employ | adopt in combination. By combining a plurality of measures, the cooling efficiency of the stacked transformer can be further improved.

また、各実施の形態における容器１３は円筒形であるが、必ずしも円筒形である必要はなく、直方体等の容器でも同様の効果を得ることができる。 Moreover, although the container 13 in each embodiment is cylindrical, it does not necessarily need to be cylindrical and the same effect can be obtained even with a container such as a rectangular parallelepiped.

本発明によれば、簡単な構成によって上段変圧器の発熱量の低減を図るとともに、上段変圧器の新たな放熱経路を形成して伝熱性能を向上させることができる。 According to the present invention, the amount of heat generated by the upper transformer can be reduced with a simple configuration, and the heat transfer performance can be improved by forming a new heat dissipation path of the upper transformer.

以上のように、本発明による段積み変圧器では、変圧器の外観構造をほとんど変えることなく、内部構造の簡単な変更のみで、冷却効率を向上することが可能であり、本発明の利用可能性は高い。 As described above, in the stacked transformer according to the present invention, the cooling efficiency can be improved by changing the internal structure without changing the appearance structure of the transformer, and the present invention can be used. The nature is high.

１…段積み変圧器
２…下段変圧器
３…上段変圧器
４…巻鉄心
５…巻線
６…変圧器本体
７…締付けバンド
７Ｓ…止め具
９…下部締付け金具
１０…上部締付け金具
１０Ａ、１０Ｂ、１６Ａ、１６Ｂ、１６Ｍ…開口
１１…連結金具
１２、１７、１９…ボルト
１３…容器
１４、１８、２２…折り曲げ部
１５、２３…固定部材
１６、２０…変形防止部材
２１、１０Ｌ…脚部
２４…平坦壁
２５…袋ナット DESCRIPTION OF SYMBOLS 1 ... Stacking transformer 2 ... Lower stage transformer 3 ... Upper stage transformer 4 ... Winding iron core 5 ... Winding 6 ... Transformer main body 7 ... Fastening band 7S ... Stopper 9 ... Lower clamp 10 ... Upper clamp 10A, 10B , 16A, 16B, 16M ... opening 11 ... coupling metal 12, 17, 19 ... bolt 13 ... container 14, 18, 22 ... bent portion 15, 23 ... fixing member 16, 20 ... deformation preventing member 21, 10L ... leg 24 ... Flat wall 25 ... Cap nut

Claims

容器内に高さ方向に設けられた複数の第１部材と、該複数の第１部材の中間部の間の異なる高さ位置に設けられた複数の第２部材と、該複数の第２部材に支持固定された複数の高さ方向の変圧器と、前記第１部材の上部から水平方向に延伸して前記容器の側壁に固定された第３部材とから構成される段積み変圧器。 A plurality of first members provided in the container in the height direction, a plurality of second members provided at different height positions between intermediate portions of the plurality of first members, and the plurality of second members A stacking transformer comprising a plurality of transformers in the height direction supported and fixed to the first member and a third member extending in the horizontal direction from the top of the first member and fixed to the side wall of the container.

第１項記載の段積み変圧器において、
第１部材の上部と、ここから水平方向に延伸して容器の側壁に固定される第３部材は、容器側に傾斜して設けられることを特徴とする段積み変圧器。 In the stacked transformer described in item 1,
The upper part of a 1st member and the 3rd member extended in a horizontal direction from here and being fixed to the side wall of a container are inclined and provided in the container side, The stacking transformer characterized by the above-mentioned.

第１項記載の段積み変圧器において、
複数の高さ方向の前記変圧器のうち、上段の変圧器の上部よりも上に位置する、前記第１部材と、前記第３部材と、第２部材の一部は、第１の部材と第２の部材を用いて変圧器を固定配置した後に、据え付けられることを特徴とする段積み変圧器。 In the stacked transformer described in item 1,
Among the plurality of transformers in the height direction, the first member, the third member, and a part of the second member, which are located above the upper part of the upper transformer, are the first member, A stacked transformer, wherein the transformer is installed after the transformer is fixedly arranged using the second member.

第１項記載の段積み変圧器において、
前記変圧器は、帯状の磁性薄鋼板を重ね巻きして形成された四角環状の巻鉄心と、この巻鉄心に装着された巻線とで構成された単位変圧器であって、前記複数の第２の部材により前記巻鉄心に締め付け、固定配置されることを特徴とする段積み変圧器。 In the stacked transformer described in item 1,
The transformer is a unit transformer composed of a quadrangular annular wound core formed by wrapping a strip-shaped magnetic thin steel plate and a winding attached to the wound core, and the plurality of second transformers. 2. A stacked transformer, wherein the stacked transformer is fixedly disposed by being fastened to the wound iron core by two members.

第１項ないし第４項のいずれかに記載の段積み変圧器において、
前記第１部材と、前記第２部材と、前記第３部材は鋼板で形成され、変圧器での発熱を前記第２部材から前記第１部材、第３部材を経由して容器上部に伝熱せしめることを特徴とする段積み変圧器。 In the stacked transformer according to any one of Items 1 to 4,
The first member, the second member, and the third member are formed of a steel plate, and heat generated by a transformer is transferred from the second member to the upper portion of the container via the first member and the third member. A stacking transformer characterized by damaging.

段積み変圧器収納容器の内部に高さ方向に複数設けられた連結金具と、複数の連結金具の中間部の間の異なる高さ位置に設けられた下部および上部締付け金具と、下部および上部締付け金具の間に設けられた複数の変圧器と、連結金具の上部から水平方向に延伸して段積み変圧器収納容器の側壁に固定された固定部材から構成される段積み変圧器。 Multiple fittings provided in the height direction inside the stacked transformer storage container, lower and upper fastening fittings provided at different height positions between the intermediate portions of the plurality of coupling fittings, and lower and upper fastenings A stacking transformer comprising a plurality of transformers provided between the metal fittings and a fixing member extending in the horizontal direction from the upper portion of the connecting metal fitting and fixed to the side wall of the stacking transformer storage container.

第６項記載の段積み変圧器において、
連結金具と、下部および上部締付け金具は鋼板で形成され、前記連結金具の幅を、前記上段変圧器の前記上部締付け金具の幅寸法とほぼ同じ寸法と成し、段積み変圧器を収容する容器の側壁に固着した平板の固定部材のほぼ全面と前記連結金具の一部が密着するように固定したことを特徴とする段積み変圧器。 In the stacked transformer according to item 6,
The connecting bracket, the lower and upper clamping brackets are formed of steel plates, and the width of the coupling bracket is substantially the same as the width dimension of the upper clamping bracket of the upper transformer, and a container that accommodates the stacked transformer A stacked transformer, wherein the flat plate fixing member fixed to the side wall of the flat plate is fixed so that almost the entire surface of the fixing member is in close contact with the flat plate fixing member.

第６項記載の段積み変圧器において、
連結金具と、下部および上部締付け金具、並びに固定部材は鋼板で形成され、前記変圧器は、帯状の磁性薄鋼板を重ね巻きして形成された四角環状の巻鉄心と、この巻鉄心に装着された巻線とで構成された単位変圧器であり、前記連結金具により容器内に複数個鉛直方向に積み重ね、固定されるとともに、上段の変圧器の前記巻鉄心を支持する前記上部締付け金具の変形を抑制する変形防止部材を設け、段積み変圧器を収容する容器の側壁に固着した鋼板の前記固定部材のほぼ全面と前記変形防止部材の垂直方向に折り曲げた面が密着するように固定したことを特徴とする段積み変圧器。 In the stacked transformer according to item 6,
The connecting metal fitting, the lower and upper fastening metal fittings, and the fixing member are formed of a steel plate, and the transformer is attached to the wound iron core with a rectangular annular wound iron core formed by overlapping and winding a strip-shaped magnetic thin steel plate. A unit transformer composed of a plurality of windings, stacked in a vertical direction in a container by the connecting metal fittings, fixed, and deformed by the upper fastening metal fittings that support the winding core of the upper transformer. A deformation preventing member that suppresses the deformation, and is fixed so that the substantially entire surface of the fixing member of the steel plate fixed to the side wall of the container accommodating the stacking transformer is in close contact with the surface of the deformation preventing member that is bent in the vertical direction. Stacking transformer characterized by.