WO2017072818A1 - Sheathed heater and load testing device - Google Patents
Sheathed heater and load testing device Download PDFInfo
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- WO2017072818A1 WO2017072818A1 PCT/JP2015/005469 JP2015005469W WO2017072818A1 WO 2017072818 A1 WO2017072818 A1 WO 2017072818A1 JP 2015005469 W JP2015005469 W JP 2015005469W WO 2017072818 A1 WO2017072818 A1 WO 2017072818A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
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Abstract
Provided is a sheathed heater that makes it easy to maintain the connection state between a heater terminal and a resistance wire. The sheathed heater (resistor R) is provided with a cylindrical section 67, a resistance wire 61 arranged in the interior of the cylindrical section 67, heater terminals 63 connected to both ends of the resistance wire 61, and an insulating powder 64 that fills the interior of the cylindrical section 67. The following are configured integrally in the heater terminals 63: a first end 63a that has a male screw shape intended to be screwed together with a nut 66 and that is partially exposed from the cylindrical section 67; a second end 63b that has a columnar shape and that has part of the resistance wire wrapped therearound; and an intermediate section 63c sandwiched between the first end 63a and the second end 63b. The intermediate section 63c includes a part in which the cross section has a shape other than a circular shape.
Description
本発明は、シーズヒーター、及びシーズヒーターを含む負荷試験装置に関する。
The present invention relates to a sheathed heater and a load test apparatus including the sheathed heater.
従来、特許文献１のように、負荷試験装置などに用いられるシーズヒーターが提案されている。
Conventionally, as in Patent Document 1, a sheathed heater used in a load test apparatus or the like has been proposed.
シーズヒーターのヒーター端子は、通常、雄ねじ部分も含めて略円柱形状で構成されるため、ナットの締め付けが強すぎると雄ねじ部分が回転し、ヒーター端子と抵抗線の接続状態が破断されるおそれがある。
Since the heater terminal of the sheathed heater is usually formed in a substantially cylindrical shape including the male screw part, if the nut is tightened too much, the male screw part may rotate and the connection state between the heater terminal and the resistance wire may be broken. is there.
したがって本発明の目的は、ヒーター端子と抵抗線の接続状態を維持しやすいシーズヒーターなどを提供することである。
Therefore, an object of the present invention is to provide a sheathed heater or the like that can easily maintain a connection state between a heater terminal and a resistance wire.
本発明に係るシーズヒーターは、円筒部と、円筒部の内部に配置される抵抗線と、抵抗線の両端に接続されたヒーター端子と、円筒部の内部に充填される絶縁粉末とを備え、ヒーター端子は、ナットとの螺合のために雄ねじ形状を有し一部が円筒部から露出する第１端部と、円柱形状を有し抵抗線の一部が巻き付けられる第２端部と、第１端部と第２端部に挟まれた中間部を有し、第１端部と中間部と第２端部が一体的に構成され、中間部は、横断面が円形以外の形状を有する部分と、第１端部及び第２端部の中心軸の延長線から離れた位置に重心が位置する横断面形状を有する部分の少なくとも一方を含む。
The sheathed heater according to the present invention includes a cylindrical portion, a resistance wire disposed inside the cylindrical portion, heater terminals connected to both ends of the resistance wire, and insulating powder filled inside the cylindrical portion, The heater terminal has a male screw shape for screwing with a nut and a first end portion that is partially exposed from the cylindrical portion, a second end portion that has a columnar shape and a portion of the resistance wire is wound thereon, An intermediate portion sandwiched between the first end portion and the second end portion, the first end portion, the intermediate portion, and the second end portion are integrally configured, and the intermediate portion has a shape other than a circular cross section. And at least one of a portion having a cross-sectional shape in which the center of gravity is located at a position away from the extension line of the central axis of the first end portion and the second end portion.
ヒーター端子の中間部に、円柱形状と異なる形状の部分などが設けられるため、当該箇所の周りに充填された絶縁粉末が回り止めの役割を果たし、ナットによる螺合の際に、ナットを回しすぎても、ヒーター端子が回転しにくくなり、抵抗線とヒーター端子の断線を防止する（ヒーター端子と抵抗線の接続状態を維持しやすくする）ことが可能になる。
また、ヒーター端子が回転しにくい状態になるため、ナットを回しすぎた状態になったかどうかを使用者が認識しやすいメリットもある。 Since the middle part of the heater terminal is provided with a part with a shape different from the cylindrical shape, the insulating powder filled around the part serves as a detent, and the nut is turned too much when screwing with the nut. However, it becomes difficult for the heater terminal to rotate, and it becomes possible to prevent the resistance wire and the heater terminal from being disconnected (to easily maintain the connection state between the heater terminal and the resistance wire).
In addition, since the heater terminal is difficult to rotate, there is an advantage that the user can easily recognize whether or not the nut is turned too much.
また、ヒーター端子が回転しにくい状態になるため、ナットを回しすぎた状態になったかどうかを使用者が認識しやすいメリットもある。 Since the middle part of the heater terminal is provided with a part with a shape different from the cylindrical shape, the insulating powder filled around the part serves as a detent, and the nut is turned too much when screwing with the nut. However, it becomes difficult for the heater terminal to rotate, and it becomes possible to prevent the resistance wire and the heater terminal from being disconnected (to easily maintain the connection state between the heater terminal and the resistance wire).
In addition, since the heater terminal is difficult to rotate, there is an advantage that the user can easily recognize whether or not the nut is turned too much.
好ましくは、中間部は、横断面が円形以外の形状を有する部分を含むものであり、横断面が円形以外の形状を有する部分は、多角柱形状を有するものであり、多角形形状の横断面の重心から、多角形形状の横断面の外形を形成する辺までの線分の総てが、第２端部の横断面を形成する円の半径よりも長い。
Preferably, the intermediate portion includes a portion whose cross section has a shape other than a circle, and the portion whose cross section has a shape other than a circle has a polygonal column shape, and has a polygonal cross section. All the line segments from the center of gravity to the side forming the outer shape of the polygonal cross section are longer than the radius of the circle forming the cross section of the second end.
さらに好ましくは、多角柱形状の横断面と同じ横断面形状を有し、多角柱形状よりも長い高さを有する柱状物から、第１端部と第２端部に相当する部分を削り出しして、ヒーター端子が形成される。
More preferably, a portion corresponding to the first end portion and the second end portion is cut out from a columnar object having the same cross-sectional shape as that of the polygonal column shape and having a height longer than the polygonal column shape. Thus, a heater terminal is formed.
また、好ましくは、中間部は、横断面が円形以外の形状を有する部分を含むものであり、中間部は、第１端部と第２端部よりも直径が大きい円柱形状部分を有し、横断面が円形以外の形状を有する部分は、円柱形状部分の一部を変形することにより形成される。
Preferably, the intermediate part includes a part having a shape other than circular in cross section, and the intermediate part has a cylindrical part having a diameter larger than that of the first end part and the second end part, The portion having a cross-sectional shape other than circular is formed by deforming a part of the cylindrical portion.
さらに好ましくは、横断面が円形以外の形状を有する部分は、多角柱形状を有する。
More preferably, the portion having a cross-sectional shape other than circular has a polygonal column shape.
また、好ましくは、横断面が円形以外の形状を有する部分は、円柱形状部分の一部が押しつぶされた形状を有する。
Also preferably, the portion having a shape other than circular in cross section has a shape in which a part of the cylindrical portion is crushed.
また、好ましくは、中間部は、第１端部及び第２端部の中心軸の延長線から離れた位置に重心が位置する横断面形状を有する部分を含むものであり、中間部は、第１端部と第２端部よりも直径が大きい円柱形状部分を有し、第１端部及び第２端部の中心軸の延長線から離れた位置に中心が位置する横断面形状を有する部分は、円柱形状部分の一部を曲げることにより形成される。
Preferably, the intermediate portion includes a portion having a cross-sectional shape in which the center of gravity is located at a position away from the extension line of the central axis of the first end portion and the second end portion. A portion having a cylindrical section having a diameter larger than that of the first end and the second end, and having a cross-sectional shape centered at a position away from the extension line of the central axis of the first end and the second end. Is formed by bending a part of a cylindrical portion.
また、好ましくは、円筒部は、開口部にはめ込まれた第１絶縁部材を介してヒーター端子の第１端部を保持するものであり、絶縁粉末における第１絶縁部材と対向する部分は、コーキングが施される。
Preferably, the cylindrical portion holds the first end of the heater terminal via a first insulating member fitted in the opening, and a portion of the insulating powder facing the first insulating member is caulked. Is given.
本発明に係るシーズヒーターは、円筒部と、円筒部の内部に配置される抵抗線と、抵抗線の両端に接続されたヒーター端子と、円筒部の内部に充填される絶縁粉末とを有するシーズヒーターを複数備え、複数のシーズヒーターは、乾式負荷試験の抵抗器として用いられるものであり、ヒーター端子は、雄ねじ形状を有し一部が円筒部から露出する第１端部と、円柱形状を有し抵抗線の一部が巻き付けられる第２端部と、第１端部と第２端部に挟まれた中間部を有し、第１端部と中間部と第２端部が一体的に構成され、中間部は、横断面が円形以外の形状を有する部分と、第１端部の中心軸の延長線から離れた位置に重心が位置する横断面形状を有する部分の少なくとも一方を含む。
A sheathed heater according to the present invention includes a cylindrical portion, a resistance wire disposed inside the cylindrical portion, heater terminals connected to both ends of the resistance wire, and insulating powder filled inside the cylindrical portion. A plurality of heaters are provided, and the plurality of sheathed heaters are used as resistors for the dry load test, and the heater terminal has a first end portion having a male screw shape and a part thereof exposed from the cylindrical portion, and a columnar shape. A second end portion around which a part of the resistance wire is wound, and an intermediate portion sandwiched between the first end portion and the second end portion, and the first end portion, the intermediate portion, and the second end portion are integrated. The intermediate portion includes at least one of a portion having a cross-sectional shape other than a circular shape and a portion having a cross-sectional shape in which the center of gravity is located at a position away from the extension line of the central axis of the first end portion. .
以上のように本発明によれば、ヒーター端子と抵抗線の接続状態を維持しやすいシーズヒーターなどを提供することができる。
As described above, according to the present invention, it is possible to provide a sheathed heater that can easily maintain the connection state between the heater terminal and the resistance wire.
以下、本実施形態について、図を用いて説明する。本実施形態における乾式の負荷試験装置１は、フレーム１０、抵抗部２０、冷却部３０、接続切り替え部４０を備える（図１～図１１、図１４～図１８参照）。
Hereinafter, this embodiment will be described with reference to the drawings. The dry load test apparatus 1 in the present embodiment includes a frame 10, a resistance unit 20, a cooling unit 30, and a connection switching unit 40 (see FIGS. 1 to 11 and FIGS. 14 to 18).
なお、方向を説明するために、接続切り替え部４０とフレーム１０が並べられる水平方向をｘ方向、ｘ方向に垂直な水平方向をｙ方向、ｘ方向とｙ方向に垂直な鉛直方向をｚ方向として説明する。
In order to describe the direction, the horizontal direction in which the connection switching unit 40 and the frame 10 are arranged is the x direction, the horizontal direction perpendicular to the x direction is the y direction, and the vertical direction perpendicular to the x direction and the y direction is the z direction. explain.
フレーム１０は、上段に抵抗部２０を収容し、下段に冷却部３０を収容する。また、フレーム１０の側部には、接続切り替え部４０が設けられ、下部にはキャスターが設けられる。
The frame 10 houses the resistance unit 20 in the upper stage and the cooling unit 30 in the lower stage. Further, a connection switching unit 40 is provided on the side of the frame 10, and a caster is provided on the lower part.
フレーム１０の側面（抵抗部２０を構成する抵抗器Ｒのヒーター端子６３が見える面）は、ヒーター端子６３や、ヒーター端子６３に接続されたケーブルや短絡バーや、抵抗器Ｒを保持する枠２１を保護するカバー１１が設けられる（図２参照）。
カバー１１は、鉄やアルミニウムなどの導電性材料で構成される。 The side surface of the frame 10 (the surface where theheater terminal 63 of the resistor R constituting the resistor unit 20 can be seen) is the heater terminal 63, a cable connected to the heater terminal 63, a short-circuit bar, and a frame 21 that holds the resistor R. Is provided with a cover 11 (see FIG. 2).
Thecover 11 is made of a conductive material such as iron or aluminum.
カバー１１は、鉄やアルミニウムなどの導電性材料で構成される。 The side surface of the frame 10 (the surface where the
The
抵抗部２０は、ｙ方向に平行な棒状の抵抗器Ｒがｘ方向に所定の間隔を空けて複数本並べられた抵抗器列が、ｚ方向に複数段並べられたもので、端子接続部４３を介して接続された発電機などの試験対象電源の負荷試験を行うために用いられる。抵抗器Ｒは試験対象電源からの電力供給を受ける。
The resistor section 20 is a terminal connection section 43 in which a plurality of resistor arrays in which a plurality of rod-shaped resistors R parallel to the y direction are arranged at predetermined intervals in the x direction are arranged in a plurality of stages in the z direction. It is used to perform a load test of a power source to be tested such as a generator connected via the. The resistor R is supplied with power from the power source to be tested.
本実施形態では、抵抗器Ｒは、ｘ方向に９本並べられた抵抗器列が、ｚ方向に１３段並べられる。ただし、各抵抗器列に並べられる抵抗器Ｒの本数や、抵抗器列が積み重ねられる段数は、これに限るものではない。
In this embodiment, the resistor R includes nine resistor rows arranged in the x direction and arranged in 13 stages in the z direction. However, the number of resistors R arranged in each resistor row and the number of stages where the resistor rows are stacked are not limited to this.
なお、少なくとも１段の抵抗器列（図４や図５で示す例では、最も上段の抵抗器列）の抵抗器Ｒは、他の抵抗器Ｒが故障した場合の取り替えなど予備用で、他の段の抵抗器列を構成する抵抗器Ｒが、第１抵抗器群Ｇ１～第１２抵抗器群Ｇ１２を構成する抵抗器Ｒとして用いられるのが望ましい。
Note that the resistor R in at least one resistor row (the uppermost resistor row in the examples shown in FIGS. 4 and 5) is used for spare purposes such as replacement when another resistor R fails. It is desirable that the resistor R constituting the resistor row of the second stage is used as the resistor R constituting the first resistor group G1 to the twelfth resistor group G12.
抵抗部２０を構成する抵抗器Ｒにおいて、近接する６本若しくは１２本の抵抗器Ｒを、１つの抵抗器群とし、試験対象電源からの電圧印加を行う抵抗器群の数を変えながら、負荷試験を行う。
In the resistor R constituting the resistor unit 20, the 6 or 12 resistors R adjacent to each other are set as one resistor group, and the load is applied while changing the number of resistor groups to which a voltage is applied from the power source to be tested. Perform the test.
また、負荷試験対象の電源の種類に応じて、抵抗器群内の接続（抵抗器群内の抵抗器Ｒの接続状態）を変える。
Also, the connection within the resistor group (the connection state of the resistor R within the resistor group) is changed according to the type of power supply subject to the load test.
抵抗部２０は、第１抵抗器群Ｇ１～第１２抵抗器群Ｇ１２を有する。本実施形態では、定格電圧：４００Ｖで定格容量：１．６７ｋＷの抵抗器Ｒを６本有する第１抵抗器群Ｇ１（定格容量：１ｋＷ）、定格電圧：１１６Ｖ、定格容量：３３４Ｗの抵抗器Ｒを６本有する第２抵抗器群Ｇ２（定格容量：２ｋＷ、第３抵抗器群Ｇ３も同じ）、定格電圧：１１６Ｖ、定格容量：８３４Ｗの抵抗器Ｒを６本有する第４抵抗器群Ｇ４（定格容量：５ｋＷ）、定格電圧：１１６Ｖ、定格容量：１．６７ｋＷの抵抗器Ｒを６本有する第５抵抗器群Ｇ５（定格容量：１０ｋＷ、第６抵抗器群Ｇ６も同じ）、定格電圧：１１６Ｖ、定格容量：１．６７ｋＷの抵抗器Ｒを１２本有する第７抵抗器群Ｇ７（定格容量：２０ｋＷ、第８抵抗器群Ｇ８～第１２抵抗器群Ｇ１２も同じ）が、設けられた例を示す。ただし、抵抗器群Ｇの数やそれぞれの定格電圧や定格容量は上述の構成に限るものではない。
The resistance unit 20 includes a first resistor group G1 to a twelfth resistor group G12. In the present embodiment, a first resistor group G1 (rated capacity: 1 kW) having six resistors R having a rated voltage of 400 V and a rated capacity of 1.67 kW, a resistor R having a rated voltage of 116 V and a rated capacity of 334 W Second resistor group G2 (rated capacity: 2 kW, third resistor group G3 is the same), rated resistor: 116V, rated resistor: 4th resistor group G4 having six resistors R (rated 834W) Rated capacity: 5 kW), rated voltage: 116 V, rated capacity: fifth resistor group G5 having six resistors R of 1.67 kW (rated capacity: 10 kW, sixth resistor group G6 is the same), rated voltage: Example in which a seventh resistor group G7 (with a rated capacity of 20 kW and the eighth resistor group G8 to the twelfth resistor group G12) having 12 resistors R with 116V and a rated capacity of 1.67 kW is provided Indicates. However, the number of resistor groups G and the rated voltages and rated capacities thereof are not limited to the above-described configuration.
抵抗器（シーズヒーター）Ｒは、ニクロム線などコイル状の抵抗線６１、抵抗線６１と電気的に接続され抵抗線６１の両端に設けられたヒーター端子（ボビン）６３、第１絶縁部材６５ａを介してヒーター端子６３を保持し抵抗線６１やヒーター端子６３の一部（枠２１を構成する壁から外側に露出しない部分）の側面を覆う円筒部（ヒーターパイプ）６７を有する（図６～図８参照）。
The resistor (seeds heater) R includes a coiled resistance wire 61 such as a nichrome wire, a heater terminal (bobbin) 63 electrically connected to the resistance wire 61 and provided at both ends of the resistance wire 61, and a first insulating member 65a. And a cylindrical portion (heater pipe) 67 that holds the heater terminal 63 and covers the side surface of the resistance wire 61 and a part of the heater terminal 63 (a portion that is not exposed to the outside from the wall constituting the frame 21) (FIGS. 6 to 5). 8).
なお、図７や、後述する図１２、図１４～図１８の断面構成図は、抵抗線６１とヒーター端子６３とナット６６以外の部材の断面を示し、抵抗線６１とヒーター端子６３とナット６６は側面を示す。
7 and cross-sectional configuration diagrams of FIGS. 12 and 14 to 18 described later show cross sections of members other than the resistance wire 61, the heater terminal 63, and the nut 66, and the resistance wire 61, the heater terminal 63, and the nut 66. Indicates the side.
円筒部６７の側面には、放熱用フィン６９が設けられる。
A heat dissipating fin 69 is provided on the side surface of the cylindrical portion 67.
ヒーター端子６３は、ナット６６との螺合のために雄ねじ形状を有し一部が円筒部６７から露出する第１端部６３ａ、略円柱形状を有し抵抗線６１の一部が巻き付けられる第２端部６３ｂ、第１端部６３ａと第２端部６３ｂに挟まれた中間部６３ｃを有し、第１端部６３ａと中間部６３ｃと第２端部６３ｂが、一体的に構成される。
The heater terminal 63 has a male thread shape for screwing with the nut 66, a first end portion 63 a partially exposed from the cylindrical portion 67, a substantially columnar shape, and a part of the resistance wire 61 is wound around the first end portion 63 a. 2 end part 63b, it has the intermediate part 63c pinched | interposed into the 1st end part 63a and the 2nd end part 63b, and the 1st end part 63a, the intermediate part 63c, and the 2nd end part 63b are comprised integrally. .
中間部６３ｃは、第１端部６３ａ及び第２端部６３ｂの中心軸ＬＸと同じ中心軸を有し、第１端部６３ａと第２端部６３ｂよりも直径が大きい略円柱形状部分６３ｃ１と、横断面が円形以外の形状を有する部分６３ｃ２を含む。
The intermediate part 63c has the same central axis as the central axis LX of the first end part 63a and the second end part 63b, and has a substantially cylindrical part 63c1 having a diameter larger than that of the first end part 63a and the second end part 63b. And a portion 63c2 having a cross-sectional shape other than circular.
たとえば、横断面が円の柱状物（円柱）から、第１端部６３ａ、第２端部６３ｂに相当する部分を削り出しして、中間部６３ｃにおける横断面が円形以外の形状を有する部分６３ｃ２や後述する中心軸ＬＸの延長線から離れた位置に重心が位置する横断面形状を有する部分６３ｃ３が形成される前の状態のヒーター端子６３が形成される。
For example, a portion 63c2 having a shape other than a circular cross section in the intermediate portion 63c is obtained by cutting out portions corresponding to the first end portion 63a and the second end portion 63b from a columnar object (column) having a circular cross section. Alternatively, the heater terminal 63 is formed in a state before the portion 63c3 having a cross-sectional shape with the center of gravity located at a position away from an extension line of the center axis LX described later.
横断面が円形以外の形状を有する部分６３ｃ２は、図７や図８に示すように、当該略円柱形状部分６３ｃ１の一部がプレス加工などにより形成された略多角柱形状（横断面が多角形）や、図９に示すように、プレス加工などにより略円柱形状部分６３ｃ１の一部が押しつぶされた形状（横断面が略楕円など）で構成される形態が考えられる。
As shown in FIGS. 7 and 8, the portion 63 c 2 having a shape other than a circular cross section has a substantially polygonal column shape in which a part of the substantially cylindrical portion 63 c 1 is formed by pressing or the like (the cross section is a polygon). As shown in FIG. 9, a configuration in which a part of the substantially cylindrical portion 63c1 is crushed by pressing or the like (the cross section is substantially oval or the like) is conceivable.
この場合、当該円形以外の形状における重心から当該形状の外形を形成する辺または弧までの線分の少なくとも幾つかは、略円柱形状部分６３ｃ１の横断面を形成する円の半径よりも短くなるように、当該円形以外の形状が形成される。
In this case, at least some of the line segments from the center of gravity in the shape other than the circle to the side or arc forming the outer shape of the shape are shorter than the radius of the circle forming the cross section of the substantially cylindrical portion 63c1. In addition, shapes other than the circle are formed.
また、当該円形以外の形状を多角形とし、当該多角形の重心から当該形状の外形を形成する辺までの線分の総てが、第２端部６３ｂ及び略円柱形状部分６３ｃ１の横断面を形成する円の半径よりも長くなるように、当該円形以外の形状が形成される形態であってもよい（図１０参照）。
Further, the shape other than the circle is a polygon, and all the line segments from the center of gravity of the polygon to the side forming the outer shape of the shape are cross sections of the second end portion 63b and the substantially cylindrical portion 63c1. A shape other than the circle may be formed so as to be longer than the radius of the circle to be formed (see FIG. 10).
この場合、断面が多角形の柱状物（多角柱）から、削り出しにより、上下の略円柱形状部分６３ｃ１や横断面が円形以外の形状を有する部分６３ｃ２を含むヒーター端子６３の全体を形成することが出来る。
In this case, the entire heater terminal 63 including the upper and lower substantially cylindrical portion 63c1 and the portion 63c2 having a cross-sectional shape other than circular is formed by cutting out from a columnar object (polygonal column) having a polygonal cross section. I can do it.
具体的には、多角柱形状の横断面と同じ横断面形状を有し、多角柱形状よりも長い高さ（第１端部６３ａ、第２端部６３ｂ、中間部６３ｃの高さ）を有する柱状物から、第１端部６３ａと第２端部６３ｂと中間部６３ｃの円柱形状部分６３ｃ１に相当する部分を削り出しして、ヒーター端子６３が形成される。
Specifically, it has the same cross-sectional shape as that of the polygonal column shape, and has a height (the height of the first end portion 63a, the second end portion 63b, and the intermediate portion 63c) longer than the polygonal column shape. A portion corresponding to the columnar portion 63c1 of the first end portion 63a, the second end portion 63b, and the intermediate portion 63c is cut out from the columnar object, so that the heater terminal 63 is formed.
たとえば、正六角柱の部材から、第１端部６３ａ、第２端部６３ｂ、中間部６３ｃの円柱形状部分６３ｃ１に相当する部分を削り出しすれば、横断面が円形以外の形状を有する部分６３ｃ２が正六角柱形状を有するヒーター端子６３を得ることが出来る。
For example, if a portion corresponding to the columnar portion 63c1 of the first end portion 63a, the second end portion 63b, and the intermediate portion 63c is cut out from a regular hexagonal column member, a portion 63c2 having a shape other than circular in cross section is obtained. A heater terminal 63 having a regular hexagonal column shape can be obtained.
また、横断面が円形以外の形状を有する部分６３ｃ２に代えて若しくは加えて、中間部６３ｃは、当該略円柱形状部分６３ｃ１の一部が曲げ加工などにより形成され、第１端部６３ａ及び第２端部６３ｂの中心軸ＬＸの延長線から離れた位置に重心が位置する横断面形状を有する部分６３ｃ３を含む形態であってもよい（図１１参照）。
Further, instead of or in addition to the portion 63c2 having a cross-sectional shape other than circular, the intermediate portion 63c is formed by bending a part of the substantially cylindrical portion 63c1, and the first end portion 63a and the second end portion 63a. A form including a portion 63c3 having a cross-sectional shape in which the center of gravity is located at a position away from the extension line of the central axis LX of the end 63b may be used (see FIG. 11).
抵抗線６１の一部は、第２端部６３ｂに巻き付けられ、スポット溶接などで固定される。
円筒部６７の内部は、マグネシアなどの絶縁粉末６４が充填され、圧縮と熱によって固められる。 A part of theresistance wire 61 is wound around the second end 63b and fixed by spot welding or the like.
The inside of thecylindrical portion 67 is filled with an insulating powder 64 such as magnesia and is hardened by compression and heat.
円筒部６７の内部は、マグネシアなどの絶縁粉末６４が充填され、圧縮と熱によって固められる。 A part of the
The inside of the
絶縁粉末６４における第１絶縁部材６５ａと対向する部分（絶縁粉末６４と第１絶縁部材６５ａの境界部分）は、シリコーンなどでコーキング６２が施される。
The portion facing the first insulating member 65a in the insulating powder 64 (the boundary portion between the insulating powder 64 and the first insulating member 65a) is subjected to coking 62 with silicone or the like.
第１絶縁部材６５ａと円筒部６７を間に挟んだ状態で、ナット６６が第１端部６３ａに螺合される。
The nut 66 is screwed into the first end 63a with the first insulating member 65a and the cylindrical portion 67 sandwiched therebetween.
ヒーター端子６３の中間部６３ｃに、角柱形状など、略円柱形状と異なる（略円柱形状が変形せしめられた）形状を設けない形態（図１２、図１３参照）では、ナット６６による螺合の際に、ナット６６を回しすぎると、ヒーター端子６３が滑って回転し、抵抗線６１とヒーター端子６３の接続状態が破断させてしまうおそれがある。
When the intermediate portion 63c of the heater terminal 63 is not provided with a shape such as a prismatic shape that is different from the substantially cylindrical shape (the substantially cylindrical shape is deformed) (see FIGS. 12 and 13), the nut 66 is screwed. In addition, if the nut 66 is turned too much, the heater terminal 63 slides and rotates, and the connection state between the resistance wire 61 and the heater terminal 63 may be broken.
本実施形態では、ヒーター端子６３の中間部６３ｃに、多角柱形状など、横断面が円形以外の形状を有する部分６３ｃ２、若しくは、第１端部６３ａ及び第２端部６３ｂの中心軸ＬＸの延長線から離れた位置に重心が位置する横断面形状を有する部分６３ｃ３、すなわち略円柱形状と異なる形状の部分が設けられるため、当該箇所の周りに充填された絶縁粉末６４が回り止めの役割を果たし、ナット６６による螺合の際に、ナット６６を回しすぎても、ヒーター端子６３が回転しにくくなり、抵抗線６１とヒーター端子６３の断線を防止する（ヒーター端子６３と抵抗線６１の接続状態を維持しやすくする）ことが可能になる。
In the present embodiment, the intermediate portion 63c of the heater terminal 63 has a portion 63c2 having a shape other than a circular cross section, such as a polygonal column shape, or an extension of the central axis LX of the first end portion 63a and the second end portion 63b. Since a portion 63c3 having a cross-sectional shape in which the center of gravity is located at a position away from the line, that is, a portion having a shape different from the substantially cylindrical shape is provided, the insulating powder 64 filled around the portion serves as a detent. When the nut 66 is screwed, even if the nut 66 is turned too much, the heater terminal 63 is difficult to rotate and prevents the resistance wire 61 and the heater terminal 63 from being disconnected (the connection state of the heater terminal 63 and the resistance wire 61). Can be easily maintained).
また、ヒーター端子６３が回転しにくい状態になるため、ナット６６を回しすぎた状態になったかどうかを使用者が認識しやすいメリットもある。
In addition, since the heater terminal 63 becomes difficult to rotate, there is also an advantage that the user can easily recognize whether or not the nut 66 has been turned too much.
また、プレス加工などによって、ヒーター端子６３の中間部６３ｃにおける略円柱形状の一部を変形させるため、簡単に変形箇所を形成することが可能になる。
Moreover, since a part of the substantially cylindrical shape in the intermediate portion 63c of the heater terminal 63 is deformed by pressing or the like, a deformed portion can be easily formed.
また、削り出しの場合は、プレス加工や曲げ加工に比べて、ヒーター端子６３の中間部６３ｃの一部箇所に応力を集中させずに、横断面が円形以外の形状を有する部分６３ｃ２を含むヒーター端子６３を形成することが出来る。
Further, in the case of machining, a heater including a portion 63c2 having a cross-sectional shape other than a circle without concentrating stress on a part of the intermediate portion 63c of the heater terminal 63 as compared with pressing or bending. A terminal 63 can be formed.
抵抗器Ｒの製造手順は後述する。
The manufacturing procedure of the resistor R will be described later.
抵抗器Ｒのヒーター端子６３は、他の抵抗器Ｒのヒーター端子６３と短絡バーで接続されたり、ケーブルを介して端子接続部４３やリレーに接続されたりする。
The heater terminal 63 of the resistor R is connected to the heater terminal 63 of another resistor R by a short-circuit bar, or is connected to the terminal connection portion 43 or a relay via a cable.
抵抗器Ｒは、４つの壁で構成された枠２１で側面が覆われる。
The side of the resistor R is covered with a frame 21 composed of four walls.
抵抗器Ｒにおけるヒーター端子６３と導通しない箇所（第１絶縁部材６５ａを介して、ヒーター端子６３を保持する円筒部６７の両端近傍など）が、第２絶縁部材６５ｂを介して、当該枠２１を構成する壁に保持される。
A portion of the resistor R that is not electrically connected to the heater terminal 63 (such as the vicinity of both ends of the cylindrical portion 67 that holds the heater terminal 63 via the first insulating member 65a) is connected to the frame 21 via the second insulating member 65b. It is held on the wall that constitutes it.
図６は、枠２１に保持された４つの抵抗器Ｒの端部であって、その内、２つは、短絡バーを介してヒーター端子６３同士が接続されたものを示す。
FIG. 6 shows the ends of the four resistors R held by the frame 21, and two of them are shown in which the heater terminals 63 are connected to each other via a short-circuit bar.
また、枠２１は、下部に設けられた冷却部３０からの冷風を上部に流すために、上面と下面が開口する。
Moreover, the upper surface and the lower surface of the frame 21 are opened in order to allow the cool air from the cooling unit 30 provided in the lower part to flow upward.
冷却部３０による冷却を効率良く行うために、抵抗器列を構成する抵抗器Ｒと当該抵抗器Ｒとｘ方向に隣接する抵抗器Ｒの中間の位置に、ｚ方向に隣接する抵抗器列の抵抗器Ｒが配置されるように、各抵抗器列の抵抗器Ｒが配列される。
In order to efficiently perform the cooling by the cooling unit 30, the resistor array adjacent in the z direction is positioned at a middle position between the resistor R constituting the resistor array and the resistor R adjacent to the resistor R in the x direction. The resistors R of each resistor row are arranged so that the resistors R are arranged.
抵抗部２０の下部（フレーム１０の下段）には、冷却ファンを有する冷却部３０が設けられる。
A cooling unit 30 having a cooling fan is provided below the resistance unit 20 (lower stage of the frame 10).
冷却部３０や、抵抗部２０における抵抗器群ごとに設けられ、試験対象電源から抵抗器群のいずれかへの電力供給を制御するリレーは、試験対象電源とは別の電源（負荷試験装置駆動用電源）で駆動される（図３参照）。
The relay provided for each resistor group in the cooling unit 30 or the resistor unit 20 and controlling the power supply from the test target power source to any one of the resistor groups is a power source (load test device drive) different from the test target power source. (Refer to FIG. 3).
接続切り替え部４０は、操作部４１、端子接続部４３を有する（図２、図３参照）。端子接続部４３は、操作部４１と離れた位置（例えば、操作部４１の背面など）に配置される形態であってもよい。
The connection switching unit 40 includes an operation unit 41 and a terminal connection unit 43 (see FIGS. 2 and 3). The terminal connection unit 43 may be arranged at a position away from the operation unit 41 (for example, the back surface of the operation unit 41).
操作部４１は、モード切替スイッチ４１ａ、抵抗切替スイッチ４１ｂを有する。
The operation unit 41 includes a mode switch 41a and a resistance switch 41b.
モード切替スイッチ４１ａは、ロータリー式の操作スイッチで、負荷試験装置１のオンオフや、試験対象の電源の種類を選択する（モード切替する）ために使用される。
The mode changeover switch 41a is a rotary operation switch and is used to turn on / off the load test apparatus 1 and to select the type of power source to be tested (mode changeover).
抵抗切替スイッチ４１ｂは、スライド式（若しくはトグル式若しくは押しボタン式）の操作スイッチで、第１抵抗器群Ｇ１～第１２抵抗器群Ｇ１２それぞれのリレーのオンオフ制御を行うためのスイッチである。
第１操作スイッチＳ１をオン状態にすると、第１抵抗器群Ｇ１のリレーがオン状態（導通状態）にされて、第１抵抗器群Ｇ１に、端子接続部４３を介して負荷試験装置１に接続された試験対象電源からの電流が流れうる状態にされる。
第２操作スイッチＳ２～第１２操作スイッチＳ１２も、同様で、オン状態にすると、対応する抵抗器群のリレーがオン状態（導通状態）にされて、当該抵抗器群に、端子接続部４３を介して負荷試験装置１に接続された試験対象電源からの電流が流れうる状態にされる。 Theresistance changeover switch 41b is a slide type (or toggle type or push button type) operation switch, and is a switch for performing on / off control of each relay of the first resistor group G1 to the twelfth resistor group G12.
When the first operation switch S1 is turned on, the relay of the first resistor group G1 is turned on (conducting state), and the first resistor group G1 is connected to the load test apparatus 1 via theterminal connection portion 43. The current from the connected power source to be tested can be made to flow.
The same applies to the second operation switch S2 to the twelfth operation switch S12. When the second operation switch S2 to the twelfth operation switch S12 are turned on, the relays of the corresponding resistor group are turned on (conductive state), and theterminal connection portion 43 is connected to the resistor group. Thus, a current from the power supply to be tested connected to the load test apparatus 1 can flow.
第１操作スイッチＳ１をオン状態にすると、第１抵抗器群Ｇ１のリレーがオン状態（導通状態）にされて、第１抵抗器群Ｇ１に、端子接続部４３を介して負荷試験装置１に接続された試験対象電源からの電流が流れうる状態にされる。
第２操作スイッチＳ２～第１２操作スイッチＳ１２も、同様で、オン状態にすると、対応する抵抗器群のリレーがオン状態（導通状態）にされて、当該抵抗器群に、端子接続部４３を介して負荷試験装置１に接続された試験対象電源からの電流が流れうる状態にされる。 The
When the first operation switch S1 is turned on, the relay of the first resistor group G1 is turned on (conducting state), and the first resistor group G1 is connected to the load test apparatus 1 via the
The same applies to the second operation switch S2 to the twelfth operation switch S12. When the second operation switch S2 to the twelfth operation switch S12 are turned on, the relays of the corresponding resistor group are turned on (conductive state), and the
モード切替スイッチ４１ａの回転位置を、試験対象電源の種類に対応した回転位置（動作モード）に合わせた場合に、冷却部３０の冷却ファンは駆動され、抵抗切替スイッチ４１ｂの操作状態に基づき第１抵抗器群Ｇ１～第１２抵抗器群Ｇ１２それぞれのリレーのオンオフ制御が行われる。
When the rotational position of the mode switch 41a is set to the rotational position (operation mode) corresponding to the type of power supply to be tested, the cooling fan of the cooling unit 30 is driven, and the first is based on the operating state of the resistance switch 41b. On / off control of the relays of each of the resistor group G1 to the twelfth resistor group G12 is performed.
なお、主電源スイッチを設け、主電源スイッチがオン状態で且つモード切替スイッチ４１ａの回転位置を試験対象電源の種類に対応した回転位置（動作モード）に合わせた場合に、冷却ファンの駆動や第１抵抗器群Ｇ１～第１２抵抗器群Ｇ１２それぞれのリレーのオンオフ制御が行われる形態であってもよい。
Note that when a main power switch is provided, the main power switch is turned on, and the rotation position of the mode changeover switch 41a is set to the rotation position (operation mode) corresponding to the type of power source to be tested, A form in which the relays of the first resistor group G1 to the twelfth resistor group G12 are turned on and off may be used.
端子接続部４３は、試験対象の電源を接続するための端子で、端子接続部４３を介して、試験対象電源と第１抵抗器群Ｇ１～第１２抵抗器群Ｇ１２とが接続可能な状態にされる。
The terminal connection unit 43 is a terminal for connecting a power supply to be tested, and the test target power supply and the first resistor group G1 to the twelfth resistor group G12 can be connected via the terminal connection unit 43. Is done.
次に、抵抗器Ｒの製造手順について説明する（図１４～図１８参照）。
Next, the manufacturing procedure of the resistor R will be described (see FIGS. 14 to 18).
２つのヒーター端子６３の間に抵抗線６１を取り付けたものを円筒部６７に挿入し、当該円筒部６７における開口が鉛直方向を向くように保持し、下方の開口をゴム状のブッシング６８で塞いだ状態で、円筒部６７の内部に絶縁粉末６４が投入される（図１４参照、充填工程）。
このとき、隙間が無い状態で多くの絶縁粉末６４が充填させるため、円筒部６７などに振動を与えた状態で、十分に乾燥させた絶縁粉末６４を投入するのが望ましい。 Aresistance wire 61 attached between the two heater terminals 63 is inserted into the cylindrical portion 67, held so that the opening in the cylindrical portion 67 faces the vertical direction, and the lower opening is closed with a rubber bushing 68. In this state, the insulating powder 64 is introduced into the cylindrical portion 67 (see FIG. 14, filling process).
At this time, since a large amount of the insulatingpowder 64 is filled without any gaps, it is desirable that the sufficiently dried insulating powder 64 is put in a state where vibration is applied to the cylindrical portion 67 and the like.
このとき、隙間が無い状態で多くの絶縁粉末６４が充填させるため、円筒部６７などに振動を与えた状態で、十分に乾燥させた絶縁粉末６４を投入するのが望ましい。 A
At this time, since a large amount of the insulating
絶縁粉末６４の充填完了後、円筒部６７における上方の開口をゴム状のブッシング６８で塞いだ状態で、円筒部６７の側面を圧縮する減径加工が施される（図１５参照、減径工程）。
After the filling of the insulating powder 64 is completed, a diameter reducing process for compressing the side surface of the cylindrical portion 67 is performed in a state where the upper opening in the cylindrical portion 67 is closed with a rubber-like bushing 68 (see FIG. 15, the diameter reducing step). ).
上下のブッシング６８を取り外した状態で、円筒部６７に熱が加えられる（図１６参照、加熱工程）。
With the upper and lower bushings 68 removed, heat is applied to the cylindrical portion 67 (see FIG. 16, heating step).
減径工程と加熱工程によって、絶縁粉末６４は固まって焼結体となる。
The insulating powder 64 is solidified into a sintered body by the diameter reduction process and the heating process.
絶縁粉末６４における円筒部６７の開口近傍で露出した部分（ブッシング６８と対向していた部分）には、シリコーンなどでコー-キング６２が施され、その後に、第１絶縁部材６５ａがはめ込まれる（図１７参照、はめ込み工程）。また、円筒部６７に放熱フィン６９が取り付けられる。
A portion of the insulating powder 64 exposed in the vicinity of the opening of the cylindrical portion 67 (a portion facing the bushing 68) is subjected to a caulking 62 with silicone or the like, and then the first insulating member 65a is fitted ( (See FIG. 17, inset process). Further, the heat radiation fin 69 is attached to the cylindrical portion 67.
ナット６６が第１端部６３ａに螺合されて、ナット６６の間に、第１絶縁部材６５ａと円筒部６７が挟みこまれて、抵抗器Ｒが完成する（図１８参照、螺合工程）。
The nut 66 is screwed into the first end portion 63a, and the first insulating member 65a and the cylindrical portion 67 are sandwiched between the nuts 66 to complete the resistor R (see FIG. 18, screwing step). .
なお、本実施形態では、中間部６３ｃの一部について、略円柱形状と異なる形状の部分が設けられたヒーター端子６３を有する抵抗器（シーズヒーター）Ｒを乾式の負荷試験装置１に用いる形態を説明したが、シーズヒーターの用途は乾式負荷試験装置に限るものではなく、電熱装置など他の目的で用いる形態であってもよい。
In the present embodiment, a form in which a resistor (seeds heater) R having a heater terminal 63 provided with a portion having a shape different from a substantially cylindrical shape is used in the dry load test apparatus 1 for a part of the intermediate portion 63c. As described above, the use of the sheathed heater is not limited to the dry load test apparatus, but may be a form used for other purposes such as an electric heating apparatus.
１ 負荷試験装置
１０ フレーム
１１ カバー
２０ 抵抗部
２１ 枠
３０ 冷却部
４０ 接続切り替え部
４１ 操作部
４１ａ モード切替スイッチ
４１ｂ 抵抗切替スイッチ
４３ 端子接続部
６１ 抵抗線
６２ コーキング
６３ ヒーター端子
６３ａ 第１端部
６３ｂ 第２端部
６３ｃ 中間部
６３ｃ１ 略円柱形状部分
６３ｃ２ 横断面が円形以外の形状を有する部分
６３ｃ３ 第１端部の中心軸の延長線から離れた位置に中心が位置する横断面形状を有する部分
６４ 絶縁粉末
６５ａ、６５ｂ 第１絶縁部材、第２絶縁部材
６６ ナット
６７ 円筒部
６８ ブッシング
６９ 放熱用フィン
７０ キャップ
７１ 筒部
７１ａ 襞
７３ 蓋部
７５ バー覆い部
７５ａ バー背面覆い部
Ｇ１～Ｇ１２ 第１抵抗器群～第１２抵抗器群
Ｒ 抵抗器（シーズヒーター） DESCRIPTION OF SYMBOLS 1Load test apparatus 10 Frame 11 Cover 20 Resistance part 21 Frame 30 Cooling part 40 Connection switching part 41 Operation part 41a Mode changeover switch 41b Resistance changeover switch 43 Terminal connection part 61 Resistance wire 62 Caulking 63 Heater terminal 63a 1st end part 63b 1st end 2 end portion 63c intermediate portion 63c1 substantially cylindrical portion 63c2 portion having a cross-sectional shape other than circular 63c3 portion having a cross-sectional shape centered at a position away from the extension line of the central axis of the first end portion 64 insulation Powder 65a, 65b First insulating member, second insulating member 66 Nut 67 Cylindrical portion 68 Bushing 69 Heat radiation fin 70 Cap 71 Cylindrical portion 71a 襞 73 Lid portion 75 Bar cover portion 75a Bar back surface cover portion G1 to G12 First resistor Group-12th resistor group R Resistor (seeds heater)
１０ フレーム
１１ カバー
２０ 抵抗部
２１ 枠
３０ 冷却部
４０ 接続切り替え部
４１ 操作部
４１ａ モード切替スイッチ
４１ｂ 抵抗切替スイッチ
４３ 端子接続部
６１ 抵抗線
６２ コーキング
６３ ヒーター端子
６３ａ 第１端部
６３ｂ 第２端部
６３ｃ 中間部
６３ｃ１ 略円柱形状部分
６３ｃ２ 横断面が円形以外の形状を有する部分
６３ｃ３ 第１端部の中心軸の延長線から離れた位置に中心が位置する横断面形状を有する部分
６４ 絶縁粉末
６５ａ、６５ｂ 第１絶縁部材、第２絶縁部材
６６ ナット
６７ 円筒部
６８ ブッシング
６９ 放熱用フィン
７０ キャップ
７１ 筒部
７１ａ 襞
７３ 蓋部
７５ バー覆い部
７５ａ バー背面覆い部
Ｇ１～Ｇ１２ 第１抵抗器群～第１２抵抗器群
Ｒ 抵抗器（シーズヒーター） DESCRIPTION OF SYMBOLS 1
Claims (9)
- 円筒部と、
前記円筒部の内部に配置される抵抗線と、
前記抵抗線の両端に接続されたヒーター端子と、
前記円筒部の内部に充填される絶縁粉末とを備え、
前記ヒーター端子は、ナットとの螺合のために雄ねじ形状を有し一部が前記円筒部から露出する第１端部と、円柱形状を有し前記抵抗線の一部が巻き付けられる第２端部と、前記第１端部と前記第２端部に挟まれた中間部を有し、前記第１端部と前記中間部と前記第２端部が一体的に構成され、
前記中間部は、横断面が円形以外の形状を有する部分と、前記第１端部及び前記第２端部の中心軸の延長線から離れた位置に重心が位置する横断面形状を有する部分の少なくとも一方を含むことを特徴とするシーズヒーター。 A cylindrical portion;
A resistance wire disposed inside the cylindrical portion;
A heater terminal connected to both ends of the resistance wire;
An insulating powder filled in the cylindrical portion;
The heater terminal has a male screw shape for screwing with a nut, a first end portion that is partially exposed from the cylindrical portion, and a second end that has a columnar shape and a portion of the resistance wire is wound around the first end portion. And an intermediate portion sandwiched between the first end portion and the second end portion, and the first end portion, the intermediate portion, and the second end portion are configured integrally.
The intermediate portion includes a portion having a cross-sectional shape other than a circular shape, and a portion having a cross-sectional shape in which a center of gravity is located at a position away from an extension line of a central axis of the first end portion and the second end portion. A sheathed heater comprising at least one of them. - 前記中間部は、前記横断面が円形以外の形状を有する部分を含むものであり、
前記横断面が円形以外の形状を有する部分は、多角柱形状を有するものであり、
前記多角形形状の横断面の重心から、前記多角形形状の横断面の外形を形成する辺までの線分の総てが、前記第２端部の横断面を形成する円の半径よりも長いことを特徴とする請求項１に記載のシーズヒーター。 The intermediate portion includes a portion whose cross section has a shape other than a circle,
The portion having a cross-sectional shape other than a circular shape has a polygonal column shape,
All of the line segments from the center of gravity of the polygonal cross section to the side forming the outer shape of the polygonal cross section are longer than the radius of the circle forming the cross section of the second end portion. The sheathed heater according to claim 1. - 前記多角柱形状の横断面と同じ横断面形状を有し、前記多角柱形状よりも長い高さを有する柱状物から、前記第１端部と前記第２端部に相当する部分を削り出しして、前記ヒーター端子が形成されることを特徴とする請求項２に記載のシーズヒーター。 A portion corresponding to the first end portion and the second end portion is cut out from a columnar object having the same cross-sectional shape as the cross-section of the polygonal column shape and having a height longer than the polygonal column shape. The sheath heater according to claim 2, wherein the heater terminal is formed.
- 前記中間部は、前記横断面が円形以外の形状を有する部分を含むものであり、
前記中間部は、前記第１端部と前記第２端部よりも直径が大きい円柱形状部分を有し、
前記横断面が円形以外の形状を有する部分は、前記円柱形状部分の一部を変形することにより形成されることを特徴とする請求項１に記載のシーズヒーター。 The intermediate portion includes a portion whose cross section has a shape other than a circle,
The intermediate portion has a cylindrical portion having a diameter larger than that of the first end portion and the second end portion,
The sheathed heater according to claim 1, wherein the portion having a cross-sectional shape other than a circular shape is formed by deforming a part of the cylindrical portion. - 前記横断面が円形以外の形状を有する部分は、多角柱形状を有することを特徴とする請求項４に記載のシーズヒーター。 The sheathed heater according to claim 4, wherein the portion having a cross-sectional shape other than a circular shape has a polygonal column shape.
- 前記横断面が円形以外の形状を有する部分は、前記円柱形状部分の一部が押しつぶされた形状を有することを特徴とする請求項４に記載のシーズヒーター。 The sheathed heater according to claim 4, wherein the portion having a cross-sectional shape other than a circular shape has a shape in which a part of the cylindrical portion is crushed.
- 前記中間部は、前記第１端部及び前記第２端部の中心軸の延長線から離れた位置に重心が位置する横断面形状を有する部分を含むものであり、
前記中間部は、前記第１端部と前記第２端部よりも直径が大きい円柱形状部分を有し、
前記第１端部及び前記第２端部の中心軸の延長線から離れた位置に中心が位置する横断面形状を有する部分は、前記円柱形状部分の一部を曲げることにより形成されることを特徴とする請求項１に記載のシーズヒーター。 The intermediate portion includes a portion having a cross-sectional shape in which the center of gravity is located at a position away from the extension line of the central axis of the first end portion and the second end portion,
The intermediate portion has a cylindrical portion having a diameter larger than that of the first end portion and the second end portion,
The portion having a cross-sectional shape whose center is located at a position away from the extension line of the central axis of the first end portion and the second end portion is formed by bending a part of the cylindrical portion. The sheathed heater according to claim 1, wherein - 前記円筒部は、開口部にはめ込まれた第１絶縁部材を介して前記ヒーター端子の前記第１端部を保持するものであり、
前記絶縁粉末における前記第１絶縁部材と対向する部分は、コーキングが施されることを特徴とする請求項１に記載のシーズヒーター。 The cylindrical portion holds the first end of the heater terminal via a first insulating member fitted in the opening,
The sheathed heater according to claim 1, wherein a portion of the insulating powder facing the first insulating member is subjected to coking. - 円筒部と、前記円筒部の内部に配置される抵抗線と、前記抵抗線の両端に接続されたヒーター端子と、前記円筒部の内部に充填される絶縁粉末とを有するシーズヒーターを複数備え、
前記複数のシーズヒーターは、乾式負荷試験の抵抗器として用いられるものであり、
前記ヒーター端子は、雄ねじ形状を有し一部が前記円筒部から露出する第１端部と、円柱形状を有し前記抵抗線の一部が巻き付けられる第２端部と、前記第１端部と前記第２端部に挟まれた中間部を有し、前記第１端部と前記中間部と前記第２端部が一体的に構成され、
前記中間部は、横断面が円形以外の形状を有する部分と、前記第１端部の中心軸の延長線から離れた位置に重心が位置する横断面形状を有する部分の少なくとも一方を含むことを特徴とする負荷試験装置。 A plurality of sheathed heaters having a cylindrical portion, a resistance wire disposed inside the cylindrical portion, heater terminals connected to both ends of the resistance wire, and insulating powder filled in the cylindrical portion,
The plurality of sheathed heaters are used as resistors for a dry load test,
The heater terminal has a first end portion having a male screw shape and a part thereof exposed from the cylindrical portion, a second end portion having a columnar shape around which a part of the resistance wire is wound, and the first end portion And an intermediate portion sandwiched between the second end portions, the first end portion, the intermediate portion and the second end portion are integrally configured,
The intermediate portion includes at least one of a portion having a cross-sectional shape other than a circular shape and a portion having a cross-sectional shape in which a center of gravity is located at a position away from an extension line of the central axis of the first end portion. A characteristic load testing device.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2015/005469 WO2017072818A1 (en) | 2015-10-30 | 2015-10-30 | Sheathed heater and load testing device |
| JP2016522835A JP5959136B1 (en) | 2015-10-30 | 2015-11-09 | Seeds heater, load test equipment |
| CN201580082796.2A CN107926082A (en) | 2015-10-30 | 2015-11-09 | Sheathed heater and load testing apparatus |
| PCT/JP2015/005582 WO2017072823A1 (en) | 2015-10-30 | 2015-11-09 | Sheathed heater and load testing device |
| TW105134658A TWI595246B (en) | 2015-10-30 | 2016-10-27 | Sheathed heater and load testing device |
| HK18106543.9A HK1247509A1 (en) | 2015-10-30 | 2018-05-21 | Sheathed heater and load testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2015/005469 WO2017072818A1 (en) | 2015-10-30 | 2015-10-30 | Sheathed heater and load testing device |
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| WO2017072818A1 true WO2017072818A1 (en) | 2017-05-04 |
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| PCT/JP2015/005469 WO2017072818A1 (en) | 2015-10-30 | 2015-10-30 | Sheathed heater and load testing device |
| PCT/JP2015/005582 WO2017072823A1 (en) | 2015-10-30 | 2015-11-09 | Sheathed heater and load testing device |
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| CN (1) | CN107926082A (en) |
| HK (1) | HK1247509A1 (en) |
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| EP3855194A4 (en) * | 2018-09-18 | 2022-06-15 | Tatsumi Ryoki Co., Ltd | Load resistor |
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| WO2019176643A1 (en) * | 2018-03-13 | 2019-09-19 | 株式会社辰巳菱機 | Load testing device |
| WO2019175953A1 (en) * | 2018-03-13 | 2019-09-19 | 株式会社辰巳菱機 | Tolerance test device |
| CN109156902B (en) * | 2018-11-08 | 2024-01-09 | 广东精彩国际生物科技有限公司 | Heating element and be equipped with this heating element's electron smoking set |
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| JP2010025752A (en) * | 2008-07-18 | 2010-02-04 | Tatsumi Ryoki:Kk | Dry type load test device |
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| JP2000145742A (en) * | 1998-11-16 | 2000-05-26 | Tadashi Iwata | Male screw member free from following turn |
| CN201134938Y (en) * | 2007-12-26 | 2008-10-15 | 广西玉柴机器股份有限公司 | Novel electric heating tube |
| CN201491300U (en) * | 2009-08-21 | 2010-05-26 | 江山热威金属制造有限公司 | Anti-loosing structure of extraction bar of electric heating pipe |
| WO2014192042A1 (en) * | 2013-05-30 | 2014-12-04 | 株式会社辰巳菱機 | Load test device |
| JP5497234B1 (en) * | 2013-08-20 | 2014-05-21 | 株式会社辰巳菱機 | Load testing equipment |
| JP5551324B1 (en) * | 2013-11-20 | 2014-07-16 | 株式会社辰巳菱機 | Load testing equipment |
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| JP2010025752A (en) * | 2008-07-18 | 2010-02-04 | Tatsumi Ryoki:Kk | Dry type load test device |
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| EP3855194A4 (en) * | 2018-09-18 | 2022-06-15 | Tatsumi Ryoki Co., Ltd | Load resistor |
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| TW201727247A (en) | 2017-08-01 |
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| HK1247509A1 (en) | 2018-09-21 |
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