JPS637005B2 - - Google Patents
Info
- Publication number
- JPS637005B2 JPS637005B2 JP1428483A JP1428483A JPS637005B2 JP S637005 B2 JPS637005 B2 JP S637005B2 JP 1428483 A JP1428483 A JP 1428483A JP 1428483 A JP1428483 A JP 1428483A JP S637005 B2 JPS637005 B2 JP S637005B2
- Authority
- JP
- Japan
- Prior art keywords
- insulator
- refrigerant
- arrester
- temperature
- gear press
- 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
Links
- 239000003507 refrigerant Substances 0.000 claims description 28
- 239000012212 insulator Substances 0.000 claims description 25
- 238000009413 insulation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 229920002545 silicone oil Polymers 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Landscapes
- Thermistors And Varistors (AREA)
- Insulators (AREA)
Description
【発明の詳細な説明】
本発明は、ギヤツプレスアレスタに関し、特に
ギヤツプレスアレスタ素子の冷却効果を高めたギ
ヤツプレスアレスタに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gear press arrester, and more particularly to a gear press arrester with improved cooling effect of gear press arrester elements.
ギヤツプレスアレスタは、本体素子をZnOを主
成分とする半導体で構成している。従つて、ギヤ
ツプレスアレスタ素子（以下素子と略記する）の
寿命は使用状態の温度に大きく左右される。即ち
素子は低温で使用するほど長寿命になり、その課
電率（印加される電圧の場合）も大きくとること
ができ、延いてはアレスタ自体を小型化すること
ができる。従つて、ギヤツプレスアレスタは使用
する素子から発生する熱量を効率良く放散し、素
子の温度上昇を低く抑えることが望ましい。 The main element of the gear press arrester is made of a semiconductor whose main component is ZnO. Therefore, the lifespan of gear press arrester elements (hereinafter abbreviated as elements) is greatly influenced by the temperature under which they are used. That is, the lower the temperature of the element used, the longer the life of the element, the higher the rate of charge (in the case of applied voltage), and the smaller the arrester itself. Therefore, it is desirable for the gear press arrester to efficiently dissipate the amount of heat generated from the elements used, and to suppress the temperature rise of the elements to a low level.
従来のギヤツプレスアレスタは、第１図に示す
ように、直列に積重ねた素子１を内部を空洞にし
た碍子２内に間隙をもつて嵌め、碍子２の内壁面
と素子１との間隙に窒素またはSF6のような気体
の冷媒を封入している。そして、素子１で発生す
る熱量は碍子２内に封入された冷媒３に放散し、
さらに碍子２を通つて外気へと放熱する。この場
合、素子１からの放熱量は、一般に非常に少ない
ものであるが、全体の熱抵抗が大なるために、温
度上昇も無視できなくなる。特に、第１図の構成
の場合、素子１の表面では加熱された冷媒３が上
昇し、碍子２の内壁面では冷却された冷媒３が下
降する。この際、素子１と碍子２の内壁面間の狭
い空間で冷媒の上昇と下降が交錯するので対流の
抵抗が大きくなり、冷媒の循環が起りにくく、上
下の温度勾配が大きくなる。さらには素子１の表
面および碍子２の内表面での冷媒の対流速度が遅
いため、表面の熱伝達率が小さくなり、冷媒３お
よび素子１の温度上昇を高める結果になる。この
結果、素子１の温度勾配Ａおよび冷媒３の温度勾
配Ｂが第２図に示すようになり、さらに温度差△
θも大きくなり、素子１の最上部位置にあたる最
高点温度θmaxによつて素子１の寿命が決定し、
課電率もこの温度θmaxを基準にする必要があ
る。 As shown in FIG. 1, the conventional gear press arrester has elements 1 stacked in series that are fitted into an insulator 2 with a gap between them, with a gap between the inner wall surface of the insulator 2 and the element 1. It is filled with a gaseous refrigerant such as nitrogen or SF6 . Then, the amount of heat generated in the element 1 is dissipated into the refrigerant 3 sealed in the insulator 2,
Furthermore, the heat is radiated to the outside air through the insulator 2. In this case, the amount of heat dissipated from the element 1 is generally very small, but since the overall thermal resistance is large, the temperature rise cannot be ignored. In particular, in the case of the configuration shown in FIG. 1, the heated refrigerant 3 rises on the surface of the element 1, and the cooled refrigerant 3 descends on the inner wall surface of the insulator 2. At this time, since the rise and fall of the refrigerant intersect in the narrow space between the inner wall surfaces of the element 1 and the insulator 2, the convection resistance becomes large, the circulation of the refrigerant becomes difficult to occur, and the vertical temperature gradient becomes large. Furthermore, since the convection velocity of the refrigerant on the surface of the element 1 and the inner surface of the insulator 2 is slow, the heat transfer coefficient of the surface becomes small, resulting in an increase in temperature of the refrigerant 3 and the element 1. As a result, the temperature gradient A of the element 1 and the temperature gradient B of the refrigerant 3 become as shown in FIG.
θ also increases, and the life of element 1 is determined by the highest point temperature θmax at the top of element 1,
The charging rate must also be based on this temperature θmax.
本発明の目的は、温度分布を改善しかつ素子の
最高点温度θmaxも下げることができるギヤツプ
レスアレスタを提供するにある。 An object of the present invention is to provide a gear press arrester that can improve the temperature distribution and lower the maximum point temperature θmax of the element.
第３図は、本発明の一実施例を示すものであ
る。同図が第１図と異なる部分は碍子２の内壁面
を粗面となし、この粗面を黒色または黒色に近い
色にすることで素子１からの輻射熱による熱放散
効果を高めた点にある。 FIG. 3 shows an embodiment of the present invention. The difference between this figure and Figure 1 is that the inner wall surface of the insulator 2 is made into a rough surface, and this rough surface is colored black or close to black to enhance the heat dissipation effect of the radiant heat from the element 1. .
碍子内の素子から発生する熱量のうち、一部は
碍子内の冷媒に熱伝達し、さらに冷媒から碍子内
面へと伝達されるが、この他に素子の表面から碍
子内壁面に直接輻射熱として伝達される熱量もあ
る。この実施例は輻射熱を吸収することに効果が
ある。すなわち、輻射の場合には、素子１の表面
と碍子２の内壁面の面粗さ、及び色によつて輻射
係数が大きく変化する。 Some of the heat generated from the elements inside the insulator is transferred to the refrigerant inside the insulator, and then from the refrigerant to the inner surface of the insulator.In addition, some heat is transferred directly from the surface of the element to the inner wall surface of the insulator as radiant heat. There is also the amount of heat that is generated. This embodiment is effective in absorbing radiant heat. That is, in the case of radiation, the radiation coefficient varies greatly depending on the surface roughness of the surface of the element 1 and the inner wall surface of the insulator 2, and the color.
一般に碍子内面は白色で、きわめて滑らかな面
となつているが、本実施例では碍子２の内壁面２
１をザラザラな粗面とし、この組面を黒色又は黒
色に近い色とすることによつて輻射係数を大きく
し輻射による伝熱量を増加させて冷却効率を高
め、素子１の温度を低く抑えるようにしたもので
ある。 Generally, the inner surface of the insulator is white and has an extremely smooth surface, but in this example, the inner wall surface of the insulator 2
By making 1 a rough surface and making this assembled surface black or a color close to black, the radiation coefficient is increased, the amount of heat transferred by radiation is increased, the cooling efficiency is increased, and the temperature of element 1 is kept low. This is what I did.
このように、素子１の冷却効果の向上は冷媒と
の温度差△θを小さくして素子１の最高点温度
θmaxを低くすることができるし、冷媒すなわち
素子の平均温度も低くすることができ、素子の長
寿命、素子の小型化に効果がある。 In this way, the cooling effect of element 1 can be improved by reducing the temperature difference Δθ with the refrigerant, lowering the maximum point temperature θmax of element 1, and also lowering the average temperature of the refrigerant, that is, the element. This is effective in extending the life of the device and reducing the size of the device.
第４図は、本発明の他の実施例を説明するため
の図である。碍子２内の冷媒として、一般には素
子の冷却作用よりも絶縁性を重視して窒素やSF6
などの気体を使用している。しかしながら、気体
の冷媒は熱伝導率が小さいために、上記の実施例
においても素子１の温度低減に限度がある。 FIG. 4 is a diagram for explaining another embodiment of the present invention. Nitrogen or SF 6 is generally used as a refrigerant in the insulator 2, with emphasis placed on insulation rather than element cooling.
Gases such as are used. However, since the gaseous refrigerant has a low thermal conductivity, there is a limit to the temperature reduction of the element 1 even in the above embodiment.
このことから、本発明において、碍子内壁面を
粗面で黒色又はそれに近い色にすると共に冷媒と
して熱伝導率の優れた液体でかつ絶縁性、難燃性
を備えたものにして素子の熱放散が一層効果的に
なる。このような条件を満足する冷媒の例として
はシリコーン油がある。この場合、素子１とシリ
コーン油およびシリコーン油と碍子２との熱伝達
率は窒素の場合に比べて５〜10倍の向上を期待で
きる。 Therefore, in the present invention, the inner wall surface of the insulator is made rough and black or a color close to it, and the refrigerant is made of a liquid with excellent thermal conductivity and has insulation and flame retardant properties to dissipate the heat of the element. becomes even more effective. An example of a refrigerant that satisfies these conditions is silicone oil. In this case, the heat transfer coefficient between the element 1 and the silicone oil and between the silicone oil and the insulator 2 can be expected to be improved by 5 to 10 times compared to the case of nitrogen.
斯かる冷媒を使用することにより、素子と冷媒
との温度差△θは著しく小さくなり、冷媒（素
子）の温度上昇も低くなる。即ち、シリコーン油
等を冷媒とし、第３図で示す構造のアレスタに適
用することで、冷媒の温度勾配Ｂ及び素子の温度
勾配Ａを一層小さくすることができ、素子の最高
点温度θmaxも一層低減することができる。 By using such a refrigerant, the temperature difference Δθ between the element and the refrigerant becomes significantly small, and the temperature rise of the refrigerant (element) also becomes low. That is, by using silicone oil or the like as a refrigerant and applying it to the arrester having the structure shown in FIG. 3, the temperature gradient B of the refrigerant and the temperature gradient A of the element can be further reduced, and the maximum temperature θmax of the element can be further reduced. can be reduced.
なお、液体を冷媒とした上記実施例において
は、温度変化による冷媒の体積変化分を吸収する
ための膨脹室が必要になる。第５図は碍子の内壁
面を粗面で黒色又はそれに近い色にすると共に冷
媒の膨脹室部を設けた場合の構成例を示してい
る。即ち、碍子２の上部に膨脹室６を設け、この
周囲に冷却フイン７を形成し、さらに冷却フイン
７の周囲にシールド８を取付けている。従つて、
膨脹室部は放熱器およびシールド効果をも兼ねて
いる。 Note that in the above embodiments in which liquid is used as the refrigerant, an expansion chamber is required to absorb changes in volume of the refrigerant due to temperature changes. FIG. 5 shows an example of a structure in which the inner wall surface of the insulator is roughened and made black or a color close to it, and a refrigerant expansion chamber is provided. That is, an expansion chamber 6 is provided in the upper part of the insulator 2, cooling fins 7 are formed around the expansion chamber 6, and a shield 8 is attached around the cooling fin 7. Therefore,
The expansion chamber also serves as a heat sink and a shield.
本発明は、以上説明したとおり、素子の放熱効
果を改善し得、素子の温度上昇を低減することが
でき、素子の寿命を延ばしかつ課電率も高めるこ
とができ、延いてはアレスタ全体を小型化するこ
とができる。 As explained above, the present invention can improve the heat dissipation effect of the element, reduce the temperature rise of the element, extend the life of the element, and increase the charging rate, and by extension, improve the overall arrester. Can be made smaller.
第１図は従来のギヤツプレスアレスタを示す断
面図、第２図は第１図の温度特性を示すグラフ、
第３図は本発明の一実施例を示す断面図、第４図
は本発明の他の実施例を説明するためのグラフ、
第５図は膨脹室を備えたギヤツプレスアレスタを
示す一部断面図ａとＡ−A′線における切断平面
図ｂである。
１……ギヤツプレスアレスタ素子、２……碍
子、３……冷媒、６……膨脹室、７……冷却フイ
ン、８……シールド。
Figure 1 is a sectional view showing a conventional gear press arrester, Figure 2 is a graph showing the temperature characteristics of Figure 1,
FIG. 3 is a sectional view showing one embodiment of the present invention, and FIG. 4 is a graph for explaining another embodiment of the present invention.
FIG. 5 is a partially sectional view a showing a gear press arrester equipped with an expansion chamber, and a plan view b taken along the line A-A'. 1... Gear press arrester element, 2... Insulator, 3... Refrigerant, 6... Expansion chamber, 7... Cooling fin, 8... Shield.
Claims (1)
めたギヤツプレスアレスタ素子と、上記碍子内に
封入した冷媒とで構成され、上記碍子はその内壁
面を粗面となし、この粗面を黒色または黒色に近
い色にしたことを特徴とするギヤツプレスアレス
タ。 ２ 上記冷媒は熱伝達率が高くかつ絶縁性、難燃
性を持つ液体にした特許請求の範囲第１項記載の
ギヤツプレスアレスタ。[Claims] 1. An insulator, a gear press arrester element fitted with a gap between the inner wall of the insulator, and a refrigerant sealed in the insulator, and the insulator has a rough inner wall surface. This gear press arrester is characterized by having this rough surface colored black or close to black. 2. A gear press arrester according to claim 1, wherein the refrigerant is a liquid having a high heat transfer coefficient, insulation properties, and flame retardance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1428483A JPS58223280A (en) | 1983-01-31 | 1983-01-31 | Gapless arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1428483A JPS58223280A (en) | 1983-01-31 | 1983-01-31 | Gapless arrester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58223280A JPS58223280A (en) | 1983-12-24 |
| JPS637005B2 true JPS637005B2 (en) | 1988-02-15 |
Family
ID=11856787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1428483A Granted JPS58223280A (en) | 1983-01-31 | 1983-01-31 | Gapless arrester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58223280A (en) |
-
1983
- 1983-01-31 JP JP1428483A patent/JPS58223280A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58223280A (en) | 1983-12-24 |
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