TWI791488B - Superheated steam generating device and method of manufacturing conductor pipe used in the device - Google Patents

Superheated steam generating device and method of manufacturing conductor pipe used in the device Download PDF

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TWI791488B
TWI791488B TW107106364A TW107106364A TWI791488B TW I791488 B TWI791488 B TW I791488B TW 107106364 A TW107106364 A TW 107106364A TW 107106364 A TW107106364 A TW 107106364A TW I791488 B TWI791488 B TW I791488B
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conductor
conductor tube
superheated steam
adjacent
joint
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TW107106364A
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Chinese (zh)
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TW201831827A (en
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外村徹
北野孝次
藤本泰廣
木村昌義
玉置幸男
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日商特電股份有限公司
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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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/14—Tools, e.g. nozzles, rollers, calenders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G1/00—Steam superheating characterised by heating method
    • F22G1/16—Steam superheating characterised by heating method by using a separate heat source independent from heat supply of the steam boiler, e.g. by electricity, by auxiliary combustion of fuel oil
    • F22G1/165—Steam superheating characterised by heating method by using a separate heat source independent from heat supply of the steam boiler, e.g. by electricity, by auxiliary combustion of fuel oil by electricity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • B23K31/027—Making tubes with soldering or welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G3/00—Steam superheaters characterised by constructional features; Details of component parts thereof
    • 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

本發明提供過熱水蒸氣生成裝置和用於該裝置的導體管的製造方法，通過在導體管構成短路電路能降低電抗，並且能減小接合部和導體管的破損的可能性。所述過熱水蒸氣生成裝置通過設置在導體管的纏繞部分的內側或外側的磁通產生機構，對螺旋狀地纏繞的圓管狀的所述導體管進行感應加熱，加熱導體管內流過的水蒸氣，生成過熱水蒸氣，在導體管的纏繞部分的大致整體，彼此相鄰的相鄰部的彼此相對的面由接合部接合，接合部的厚度為導體管的管厚以上。The present invention provides a superheated steam generating device and a method for manufacturing a conductor tube used in the device. By forming a short circuit in the conductor tube, the reactance can be reduced, and the possibility of damage to the junction part and the conductor tube can be reduced. The superheated steam generating device induction-heats the helically wound circular tubular conductor tube through a magnetic flux generating mechanism provided inside or outside the winding portion of the conductor tube, and heats the water flowing through the conductor tube. The steam generates superheated steam, and substantially the entire winding portion of the conductor tube, the opposing surfaces of the adjacent adjacent parts are joined by the joint part, and the thickness of the joint part is equal to or greater than the tube thickness of the conductor tube.

Description

過熱水蒸氣生成裝置和用於該裝置的導體管的製造方法Superheated steam generating device and method of manufacturing conductor pipe used in the device

本發明涉及通過對螺旋狀地纏繞的導體管進行感應加熱來加熱流過所述導體管內的水蒸氣而生成過熱水蒸氣的過熱水蒸氣生成裝置。The present invention relates to a superheated steam generator for generating superheated steam by inductively heating a helically wound conductive tube to heat water vapor flowing in the conductive tube.

以往，在這種流體加熱裝置中，如專利文獻1所示，有一種在形成次級線圈的螺旋狀地纏繞的導體管中，使纏繞部分的彼此相鄰的導體管彼此短路而構成短路電路，從而降低電抗以提高加熱效率的流體加熱裝置已被公眾所知。Conventionally, in such a fluid heating device, as disclosed in Patent Document 1, there is a method in which, among the helically wound conductor tubes forming the secondary coil, the conductor tubes adjacent to each other in the wound portion are short-circuited to form a short-circuit circuit. , thereby reducing the reactance to increase the heating efficiency of the fluid heating device has been known to the public.

在此，通過利用焊接等將沿螺旋的軸向延伸的電連接構件與纏繞部分的周向的一部分連接，或者通過將纏繞部分的彼此相鄰的導體管彼此局部焊接接合，由此構成所述的短路電路。Here, the electrical connection member extending in the axial direction of the spiral is connected to a part of the circumference of the winding portion by welding or the like, or by locally welding and joining conductor tubes adjacent to each other in the winding portion, thereby constituting the of the short circuit.

可是，作為接合部的電連接構件或焊接部分，因短路電流集中而成為高溫、因導體管的纏繞部分的熱膨脹導致的變形而產生應力，從而產生接合部和導體管破損的問題。However, the electrical connection member or welded part as the joint becomes high in temperature due to concentrated short-circuit current, and stress is generated due to deformation due to thermal expansion of the winding part of the conductor tube, thereby causing a problem of damage to the joint part and the conductor tube.

現有技術文獻prior art literature

專利文獻1：日本專利公開公報特開2010-71624號Patent Document 1: Japanese Patent Laid-Open Publication No. 2010-71624

本發明是用於解決所述的問題而做出的發明，本發明的主要目的是通過在導體管中構成短路電路來降低電抗，並且減小接合部和導體管的破損的可能性。The present invention is made to solve the above-mentioned problems, and the main purpose of the present invention is to reduce reactance by forming a short circuit in a conductor tube, and to reduce the possibility of damage to a junction part and a conductor tube.

即，本發明提供一種過熱水蒸氣生成裝置，其通過設置在導體管的纏繞部分的內側或外側的磁通產生機構，對螺旋狀地纏繞的圓管狀的所述導體管進行感應加熱，由此加熱所述導體管內流過的水蒸氣，生成過熱水蒸氣，在所述導體管的纏繞部分，彼此相鄰的相鄰部的彼此相對的面，橫跨周向的大致整體，由具有導電性的接合部接合，所述接合部的厚度為所述導體管的管厚以上。That is, the present invention provides a superheated steam generating device that induces heating of the helically wound circular tubular conductor pipe by means of a magnetic flux generating mechanism provided inside or outside the winding portion of the conductor pipe, thereby The water vapor flowing through the conductor tube is heated to generate superheated steam. In the winding part of the conductor tube, the opposing surfaces of the adjacent parts adjacent to each other span substantially the entire circumferential direction, and have a conductive A permanent joint part is joined, and the thickness of the joint part is equal to or greater than the tube thickness of the conductor tube.

按照這樣的過熱水蒸氣生成裝置，由於在導體管的纏繞部分，彼此相鄰的相鄰部橫跨周向的大致整體由接合部接合（整個接合），所以能夠避免局部接合情況下的熱膨脹導致的應力向接合部集中，能夠減小接合部和導體管破損的可能性。此外，由於導體管呈圓管狀，在彼此相鄰的相鄰部之間形成有凹部，所以通過在所述凹部設置接合部，能夠增加接合部與導體管的外側周面的接觸面積。通過該結構，能夠減小應力向接合部集中。According to such a superheated steam generating device, since the adjacent parts adjacent to each other are joined by the joint part across almost the entire circumference of the winding part of the conductor pipe (whole joint), it is possible to avoid thermal expansion caused by partial joint. The stress is concentrated on the junction, which can reduce the possibility of damage to the junction and the conductor tube. In addition, since the conductor pipe is in the shape of a circular pipe and recesses are formed between adjacent parts, the contact area between the joint and the outer peripheral surface of the conductor pipe can be increased by providing the joint in the recess. With this structure, it is possible to reduce the concentration of stress on the junction.

在此，如果導體管與接合部距磁通產生機構的感應線圈的距離相同，則理想的是，接合部的厚度與導體管的管厚是相同的值。Here, if the distance between the conductor pipe and the junction portion is the same from the induction coil of the magnetic flux generating mechanism, it is desirable that the thickness of the junction portion and the thickness of the conductor pipe be the same value.

可是，在導體管呈圓管狀、在彼此相鄰的相鄰部之間設置接合部的結構中，相比於導體管，接合部距感應線圈的距離更大。由於如果距感應線圈的距離大，則磁耦合減弱、感應電壓變低，所以該部分的發熱量降低。However, in the structure in which the conductor pipe is in the shape of a circular pipe and the junction is provided between adjacent portions, the distance between the junction and the induction coil is greater than that of the conductor pipe. If the distance from the induction coil is large, the magnetic coupling becomes weak and the induced voltage becomes low, so the heat generation in this part decreases.

這樣，如果導體管與接合部產生溫度差，則由於熱伸長差而產生機械應力，成為破裂等破損的原因，因此盡可能實現發熱量的均勻化是重要的。In this way, if a temperature difference occurs between the conductor pipe and the junction, mechanical stress will be generated due to the difference in thermal elongation, which will cause damage such as cracks. Therefore, it is important to make the heat generation as uniform as possible.

通過使接合部的厚度為導體管的管厚以上，能夠降低接合部的電阻值，由於電流增加，能夠使接合部的發熱量增加。其結果，能夠實現導體管與接合部的發熱量的均勻化。By setting the thickness of the junction part to be equal to or greater than the thickness of the conductor tube, the resistance value of the junction part can be reduced, and the amount of heat generated at the junction part can be increased due to an increase in current. As a result, it is possible to equalize the heat generation of the conductor pipe and the junction.

作為所述接合部，可以由焊接接合形成。在焊接接合的情況下，由於是熔融金屬材料容易裝滿彼此相鄰的相鄰部之間的凹部的結構，所以能夠使所述焊接作業變得容易。As the joint portion, it may be formed by welding joint. In the case of welding, since the molten metal material easily fills the concave portion between adjacent adjacent portions, the welding work can be facilitated.

為了通過厚度大小的調整而容易使發熱量均勻化，優選的是，所述接合部的材質的電阻率與所述導體管的材質的電阻率大體相同。In order to easily equalize the amount of heat generated by adjusting the thickness, it is preferable that the electrical resistivity of the material of the joint part is substantially the same as the electrical resistivity of the material of the conductive tube.

在考慮對導體管的纏繞部分整個接合的操作性的情況下，優選的是，所述接合部設置在所述纏繞部分的外表面側。此外，為了使電磁感應的磁耦合良好，優選的是，所述磁通產生機構設置在所述導體管的纏繞部分的內側和外側雙方。In consideration of the workability of engaging the entire winding portion of the conductor pipe, it is preferable that the engaging portion is provided on the outer surface side of the winding portion. In addition, in order to improve magnetic coupling by electromagnetic induction, it is preferable that the magnetic flux generating means is provided both inside and outside of the winding portion of the conductor tube.

優選的是，所述接合部容納在由所述彼此相鄰的相鄰部形成的凹部內。按照該結構，能夠防止配置在導體管的纏繞部分的外側或內側的磁通產生機構的徑向的尺寸變大。Preferably, the engaging portion is accommodated in a recess formed by the adjacent portions adjacent to each other. According to this configuration, it is possible to prevent the radial dimension of the magnetic flux generating means arranged outside or inside the winding portion of the conductor pipe from becoming large.

此外，本發明提供一種導體管的製造方法，所述導體管用於過熱水蒸氣生成裝置，通過感應加熱，加熱在內部流過的水蒸氣，生成過熱水蒸氣， 在螺旋狀地纏繞的圓管狀的導體管的纏繞部分的大致整體，將彼此相鄰的相鄰部的彼此相對的面焊接接合，並且使所述焊接接合的填料（覆蓋）厚度為所述導體管的管厚以上。In addition, the present invention provides a method of manufacturing a conductor pipe used in a superheated steam generating device, which heats the water vapor flowing inside by induction heating to generate superheated steam, and the conductive pipe is wound in a helically wound round tubular Substantially the entire winding portion of the conductor pipe is welded to join the opposing surfaces of the adjacent portions adjacent to each other, and the thickness of the filler (covering) of the welded joint is equal to or greater than the pipe thickness of the conductor pipe.

按照如上所述構成的本發明，由於在導體管的纏繞部分，彼此相鄰的相鄰部，橫跨周向整體由接合部接合，所以能夠在導體管構成短路電路，從而能夠降低電抗，並且能夠減小接合部和導體管破損的可能性。According to the present invention constituted as described above, since the adjacent parts adjacent to each other are joined by the joint portion across the entire circumferential direction in the winding portion of the conductor tube, a short circuit can be formed in the conductor tube, thereby reducing the reactance, and The possibility of damage to joints and conductor tubes can be reduced.

以下，參照附圖，對本發明的過熱水蒸氣生成裝置100的一個實施方式進行說明。Hereinafter, one embodiment of the superheated steam generation device 100 of the present invention will be described with reference to the drawings.

如圖1所示，所述過熱水蒸氣生成裝置100，通過加熱水或水蒸氣生成超過100℃（200℃～2000℃）的過熱蒸汽，所述過熱水蒸氣生成裝置100具有螺旋狀地纏繞的圓管狀的導體管2、以及用於對所述導體管2進行感應加熱的磁通產生機構3。As shown in Fig. 1, the superheated steam generating device 100 generates superheated steam exceeding 100°C (200°C-2000°C) by heating water or steam, and the superheated steam generating device 100 has a helically wound A circular tube-shaped conductor tube 2 and a magnetic flux generating mechanism 3 for inductively heating the conductor tube 2 .

導體管2由一個金屬製的管形成，具有螺旋狀地纏繞的纏繞部分2x，在導體管2的一個端部形成有用於導入水或水蒸氣的導入口P1，在另一個端部形成有用於匯出生成的過熱水蒸氣的匯出口P2。用於向導體管2供給水或水蒸氣的外部配管與導入口P1連接，用於將生成的過熱水蒸氣向使用側（例如熱處理室）供給的外部配管與匯出口P2連接。The conductor pipe 2 is formed of a metal pipe, has a helically wound winding portion 2x, and is formed at one end of the conductor pipe 2 with an inlet P1 for introducing water or steam, and at the other end with a Outlet P2 from which the generated superheated steam flows out. An external pipe for supplying water or steam to the conductor pipe 2 is connected to the inlet P1, and an external pipe for supplying the generated superheated steam to the use side (for example, a heat treatment chamber) is connected to the outlet P2.

磁通產生機構3包括鐵心31以及沿所述鐵心31纏繞的感應線圈32。未圖示的交流電源與所述感應線圈32連接，向所述感應線圈32供給被控制的電力。由交流電源供給電力的感應線圈32成為初級線圈，通過所述初級線圈供電的結果，在導體管2中流過感應電流，導體管2成為次級線圈。The magnetic flux generating mechanism 3 includes an iron core 31 and an induction coil 32 wound along the iron core 31 . An AC power supply (not shown) is connected to the induction coil 32 and supplies controlled electric power to the induction coil 32 . The induction coil 32 supplied with power from an AC power source serves as a primary coil, and as a result of supplying power to the primary coil, an induced current flows through the conductor tube 2, and the conductor tube 2 becomes a secondary coil.

本實施方式的感應線圈32與導體管2的纏繞部分2x配置在同軸上，感應線圈32具有：內側感應線圈32a，配置在纏繞部分2x的內側；以及外側感應線圈32b，配置在纏繞部分的外側。通過這樣地在纏繞部分2x的內外雙方配置的內側感應線圈32a、外側感應線圈32b，能夠使電磁感應的磁耦合變好，能夠使導體管2中流過感應電流變得容易，從而能夠提高水蒸氣的加熱效率（過熱水蒸氣的生成效率）。The induction coil 32 of the present embodiment is disposed coaxially with the winding portion 2x of the conductor tube 2, and the induction coil 32 has: an inner induction coil 32a disposed inside the winding portion 2x; and an outer induction coil 32b disposed outside the winding portion . In this way, the inner induction coil 32a and the outer induction coil 32b arranged inside and outside the winding part 2x can make the magnetic coupling of electromagnetic induction better, and can make it easy to flow an induced current in the conductor tube 2, thereby improving the water vapor flow rate. The heating efficiency (generation efficiency of superheated steam).

此外，在本實施方式中，如圖2和圖3所示，在導體管2的纏繞部分2x，彼此相鄰的相鄰部20的彼此相對的面，橫跨周向的大致整體，由具有導電性的接合部4接合。即，橫跨導體管2的纏繞部分2x的整個螺旋設置有接合部4。In addition, in the present embodiment, as shown in FIG. 2 and FIG. 3 , in the winding portion 2x of the conductor pipe 2, the opposing surfaces of the adjacent portions 20 adjacent to each other span substantially the entire circumferential direction, and have The conductive bonding portion 4 is bonded. That is, the engaging portion 4 is provided across the entire spiral of the winding portion 2x of the conductor pipe 2 .

具體地說，接合部4通過焊接接合形成（以下也稱為接合焊接部）。即，在導體管2的纏繞部分2x，彼此相鄰的相鄰部20的彼此相對的面，橫跨螺旋整體地整個接合（參照圖2）。此外，使接合部4的材質的電阻率與導體管2的材質的電阻率大體相同。在此，優選的是，接合部4的材質與導體管2的材質相同。由此，不僅能使電阻率相同，而且能使熱膨脹率也相同，由此能夠使溫度上升時產生的熱應力降低。此外，由於焊接接合中以一定的進給速度使焊炬（torch）與焊接部位的距離保持一定是重要的，因此優選的是使用自動焊接機。另外，由於導體管2的相鄰部20之間最初就存在坡口，所以無需進行坡口加工。Specifically, the joint portion 4 is formed by welding (hereinafter also referred to as a joint welded portion). That is, in the winding portion 2x of the conductor pipe 2, the opposing surfaces of the adjacent portions 20 adjacent to each other are entirely joined across the entire helix (see FIG. 2 ). In addition, the electrical resistivity of the material of the junction part 4 is made substantially the same as the electrical resistivity of the material of the conductor pipe 2 . Here, it is preferable that the material of the junction part 4 is the same as that of the conductor tube 2 . In this way, not only the electrical resistivity but also the thermal expansion coefficient can be made the same, whereby the thermal stress generated when the temperature rises can be reduced. In addition, since it is important to maintain a constant distance between a torch and a welding site at a constant feed rate during welding, it is preferable to use an automatic welding machine. In addition, since a bevel exists between the adjacent parts 20 of the conductor pipe 2 from the beginning, it is not necessary to perform beveling.

此外，如圖3所示，接合部4的厚度為導體管2的管厚以上。即，作為接合部4的、焊接接合形成的填料的厚度為導體管2的管厚以上。接合部4容納在由彼此相鄰的相鄰部20形成的凹部20M內。更具體地說，接合部4從彼此相鄰的相鄰部20的接觸部位20c或其附近起以規定厚度形成在能容納在凹部20M內的範圍中。即，在垂直於螺旋的軸向（纏繞部分2x的中心軸向）的方向上，導體管2的外端部分位於比接合部4的外端部分更靠外側的位置。In addition, as shown in FIG. 3 , the thickness of the joint portion 4 is equal to or greater than the tube thickness of the conductor tube 2 . That is, the thickness of the filler formed by welding as the joint portion 4 is equal to or greater than the pipe thickness of the conductor pipe 2 . The engaging portion 4 is accommodated in the recessed portion 20M formed by the adjacent portions 20 adjacent to each other. More specifically, the engaging portion 4 is formed with a predetermined thickness in a range that can be accommodated in the concave portion 20M from the contact portion 20c of the adjacent portions 20 adjacent to each other or the vicinity thereof. That is, the outer end portion of the conductor tube 2 is located further outside than the outer end portion of the joint portion 4 in a direction perpendicular to the axial direction of the helix (the central axial direction of the winding portion 2 x ).

在圖3等中，接合部4設置在導體管2的纏繞部分2x的內表面側和外表面側雙方，但是在考慮對導體管2的纏繞部分2x進行整個接合的操作性的情況下，優選的是，接合部4僅設置在纏繞部分2x的外表面側。In FIG. 3 etc., the joint part 4 is provided on both the inner surface side and the outer surface side of the winding part 2x of the conductor pipe 2, but in consideration of the operability of the entire winding part 2x of the conductor pipe 2, it is preferable Note that the engagement portion 4 is provided only on the outer surface side of the winding portion 2x.

如圖4所示，纏繞部分2x的相鄰部20的接觸部位與填料部（接合焊接部4）之間，儘管在作業上會形成少許的間隙，但是如果設所述間隙尺寸為Δ，則成為0＜Δ＜數mm的程度。例如，用於1小時產生1200℃的240kg的過熱水蒸氣的導體管2，直徑為48.3mm，管厚為3.7mm。對所述導體管2的纏繞部分2x進行整個焊接、設填料厚度為5mm時，Δ約為2.5mm。As shown in FIG. 4 , although a small gap is formed in operation between the contact portion of the adjacent portion 20 of the winding portion 2x and the filler portion (joint welding portion 4), if the size of the gap is Δ, then It is about 0<Δ<several mm. For example, the conductor pipe 2 used to generate 240 kg of superheated steam at 1200° C. for one hour has a diameter of 48.3 mm and a pipe thickness of 3.7 mm. When the entire winding portion 2x of the conductor tube 2 is welded and the filler thickness is 5 mm, Δ is about 2.5 mm.

如果是作為使水蒸氣流過程度的尺寸的導體管2，則在管厚和填料厚度相等的情況下，接合焊接部4一方距磁通產生機構3的感應線圈32的距離變大。如果設導體管2的壁厚為t、接合焊接部4的填料厚度為T，則通過使T＞t，可以使接合焊接部4的電流增加，從而使發熱量增加。If the conductor pipe 2 has a size to allow water vapor to pass through, the distance between the welded portion 4 and the induction coil 32 of the magnetic flux generating mechanism 3 increases when the pipe thickness and filler thickness are equal. Assuming that the wall thickness of the conductor tube 2 is t and the filler thickness of the joint welded portion 4 is T, by setting T>t, the current at the joint welded portion 4 can be increased, thereby increasing the heat generation.

T＝t時，將導體管2的感應電壓高於接合焊接部4的情況標記為〇記號，並表示在以下的表中。When T=t, the case where the induced voltage of the conductor tube 2 is higher than that of the joint welded portion 4 is marked with a 0 and shown in the following table.

[表1]

Figure 107106364-A0304-0001
[Table 1]
Figure 107106364-A0304-0001

發熱量不僅與感應電壓有關，還與導體管2和接合焊接部4的電阻值有關。即，電阻值越低，流過的電流越大，發熱量越增加。The amount of heat generation depends not only on the induced voltage but also on the resistance value of the conductive tube 2 and the joint welding portion 4 . That is, the lower the resistance value, the larger the current flowing, and the higher the heat generation.

將產生感應電壓的接合焊接部4的周長大於導體管2的纏繞部分2x的情況設為 “〇”、將產生感應電壓的接合焊接部4的周長小於導體管2的纏繞部分2x的情況設為“×”並集中表示在下表中。The case where the circumference of the joint welding portion 4 where the induced voltage is generated is larger than the winding portion 2x of the conductor pipe 2 is set to “0”, and the case where the circumference length of the joint welding portion 4 where the induced voltage is generated is smaller than the winding portion 2x of the conductor pipe 2 Set to "×" and collectively expressed in the table below.

[表2]

Figure 107106364-A0304-0002
[Table 2]
Figure 107106364-A0304-0002

在將導體管2的直徑設為Φ時，表2的“〇”的位置處的填料厚度T的最大值成為（T＋Δ）＜Φ/2的範圍。When the diameter of the conductor pipe 2 is Φ, the maximum value of the filler thickness T at the position "0" in Table 2 falls within the range of (T+Δ)<Φ/2.

＜本實施方式的效果＞<Effects of this embodiment>

按照如上所述構成的過熱水蒸氣生成裝置100，因為在導體管2的纏繞部分2x彼此相鄰的相鄰部20，橫跨周向的大致整體由接合部4接合（整個接合），所以能夠避免局部接合情況下的熱膨脹導致的應力向接合部的集中，能夠減小接合部和導體管的破損的可能性。此外，由於導體管2呈圓管狀，彼此相鄰的相鄰部20之間形成凹部20M，所以通過在所述凹部20M設置接合部4，能夠增大接合部4與導體管2的外側周面的接觸面積。通過該結構，也能夠減小應力向接合部集中。According to the superheated steam generating device 100 constituted as described above, since the adjacent parts 20 adjacent to each other in the winding part 2x of the conductor pipe 2 are joined by the joint part 4 across substantially the entire circumferential direction (whole joint), it is possible to Avoiding concentration of stress on the joint portion due to thermal expansion in the case of partial joint can reduce the possibility of damage to the joint portion and the conductor tube. In addition, since the conductor pipe 2 is in the shape of a circular pipe, and the recesses 20M are formed between the adjacent parts 20 adjacent to each other, by providing the junction 4 in the recesses 20M, the outer peripheral surface of the junction 4 and the conductor pipe 2 can be enlarged. the contact area. This configuration also reduces the concentration of stress on the junction.

由於接合部4的厚度T為導體管2的管厚t以上，因此能夠減小接合部4的電阻值，能夠通過增加電流來增加發熱量。Since the thickness T of the junction part 4 is equal to or greater than the thickness t of the conductor tube 2, the resistance value of the junction part 4 can be reduced, and the heat generation can be increased by increasing the current.

此外，由於接合部4是通過焊接接合形成的，是彼此相鄰的相鄰部20之間的凹部20M容易堆滿熔融金屬材料的結構，所以能使所述焊接作業變得容易。In addition, since the joint portion 4 is formed by welding, the concave portion 20M between the adjacent adjacent portions 20 is easily filled with molten metal material, so the welding work can be facilitated.

＜其他變形實施方式＞＜Other Modified Embodiments＞

另外，本發明不限於所述各實施方式。In addition, this invention is not limited to each said embodiment.

例如，在所述實施方式中，接合部4通過接合焊接形成，但是也可以通過釺焊形成。此外，可以將與導體管分開設置的連接用構件沿纏繞部分的相鄰部捲繞，並利用焊接或釺焊等把所述連接用構件與導體管2連接，由此將所述連接用構件作為接合部4。For example, in the above-described embodiment, the joint portion 4 is formed by joint welding, but it may also be formed by brazing. In addition, a connecting member provided separately from the conductor tube may be wound along the adjacent portion of the winding portion, and the connecting member may be connected to the conductor tube 2 by welding or soldering, thereby connecting the connecting member to the conductor tube 2. as joint 4.

此外，本發明不限於所述實施方式，在不脫離本發明宗旨的範圍內當然可以進行各種變形。In addition, this invention is not limited to the said embodiment, Of course, various deformation|transformation is possible in the range which does not deviate from the summary of this invention.

可以相互組合本發明的各個實施方式（實施例）中所記載的技術特徵形成新的技術方案。The technical features described in the various embodiments (examples) of the present invention can be combined with each other to form new technical solutions.

2‧‧‧導體管2x‧‧‧纏繞部分3‧‧‧磁通產生機構4‧‧‧接合部、接合焊接部20‧‧‧相鄰部20c‧‧‧接觸部位20M‧‧‧凹部31‧‧‧鐵心32‧‧‧感應線圈32a‧‧‧內側感應線圈32b‧‧‧外側感應線圈100‧‧‧過熱水蒸氣生成裝置2‧‧‧conductor tube 2x‧‧‧winding part 3‧‧‧magnetic flux generating mechanism 4‧‧‧junction part, joint welding part 20‧‧‧adjacent part 20c‧‧‧contact part 20M‧‧‧recessed part 31‧ ‧‧Core 32‧‧‧Induction coil 32a‧‧‧Inner induction coil 32b‧‧‧Outer induction coil 100‧‧‧Superheated steam generating device

圖1是示意性地表示本實施方式的過熱水蒸氣生成裝置的結構的剖視圖。 圖2是表示同實施方式的導體管的纏繞部分的局部放大剖視圖。 圖3是表示同實施方式的導體管的外表面側的焊接部位的示意圖。 圖4是表示同實施方式的導體管和感應線圈的位置關係的示意圖。FIG. 1 is a cross-sectional view schematically showing the structure of a superheated steam generator according to the present embodiment. Fig. 2 is a partially enlarged cross-sectional view showing a winding portion of the conductor pipe according to the embodiment. Fig. 3 is a schematic view showing a welded portion on the outer surface side of the conductor pipe according to the embodiment. Fig. 4 is a schematic diagram showing the positional relationship between the conductor pipe and the induction coil in the embodiment.

2‧‧‧導體管 2‧‧‧conductor tube

2x‧‧‧纏繞部分 2x‧‧‧winding part

4‧‧‧接合部、接合焊接部 4‧‧‧joint part, joint welding part

20‧‧‧相鄰部 20‧‧‧adjacent part

20c‧‧‧接觸部位 20c‧‧‧Contact parts

20M‧‧‧凹部 20M‧‧‧Concave

Claims (5)

一種過熱水蒸氣生成裝置，其特徵在於，所述過熱水蒸氣生成裝置通過設置在一導體管的一纏繞部分的內側或外側的具有感應線圈的一磁通產生機構，對一螺旋狀地纏繞的一圓管狀的所述導體管進行感應加熱，由此加熱所述導體管內流過的水蒸氣，生成過熱水蒸氣；在所述導體管的所述纏繞部分，彼此相鄰的一相鄰部，橫跨周向的整體，由具有導電性的一接合部接合；所述接合部容納在由所述彼此相鄰的所述相鄰部形成的一凹部內，所述磁通產生機構的感應線圈距所述接合部的距離大於所述磁通產生機構的感應線圈距所述導體管的距離；以及所述接合部的一厚度為所述導體管的一管厚以上。 A superheated steam generating device, characterized in that the superheated steam generating device applies a helically wound A circular tubular conductor tube is heated by induction, thereby heating the water vapor flowing through the conductor tube to generate superheated water vapor; in the winding part of the conductor tube, an adjacent part adjacent to each other, Across the whole of the circumferential direction, it is joined by a joint part having conductivity; the joint part is accommodated in a recess formed by the adjacent parts adjacent to each other, and the induction coil of the magnetic flux generating mechanism The distance from the junction part is greater than the distance from the induction coil of the magnetic flux generating mechanism to the conductor pipe; and a thickness of the junction part is more than a pipe thickness of the conductor pipe. 如請求項1所述的過熱水蒸氣生成裝置，其特徵在於，所述接合部是通過焊接接合形成的。 The superheated steam generator according to claim 1, wherein the joint is formed by welding. 如請求項1所述的過熱水蒸氣生成裝置，其特徵在於，所述接合部的材質的一電阻率與所述導體管的材質的一電阻率相同。 The superheated steam generating device according to claim 1, wherein a resistivity of a material of the junction part is the same as a resistivity of a material of the conductive tube. 如請求項1所述的過熱水蒸氣生成裝置，其特徵在於；所述磁通產生機構設置在所述導體管的所述纏繞部分的內側和外側雙方；以及所述接合部設置在所述纏繞部分的一外表面側。 The superheated steam generating device according to claim 1, wherein: the magnetic flux generating mechanism is provided on both inside and outside of the winding portion of the conductor tube; and the joint portion is provided on the winding portion. An outer surface side of the part. 一種導體管的製造方法，其特徵在於，所述導體管用於一過熱水蒸氣生成裝置，通過由具有感應線圈的磁通產生機構被感應加熱，由此加熱在內部流過的水蒸氣，生成過熱水蒸氣； 在一螺旋狀地纏繞的一圓管狀的所述導體管的一纏繞部分的整體，將彼此相鄰的一相鄰部的彼此相對的面由接合部焊接接合；所述接合部容納在由所述彼此相鄰的所述相鄰部形成的一凹部內，使所述磁通產生機構的感應線圈與所述接合部的距離大於所述磁通產生機構的感應線圈與所述導體管的距離；以及並且使所述接合部的厚度為所述導體管的一管厚以上。 A method for manufacturing a conductor tube, wherein the conductor tube is used in a superheated steam generating device, and is heated by induction by a magnetic flux generating mechanism having an induction coil, thereby heating the water vapor flowing inside to generate superheat water vapor; In the whole of a winding portion of a circular tubular conductor pipe wound helically, the opposing surfaces of adjacent portions adjacent to each other are welded and joined by a joint portion; the joint portion is accommodated by the In a recess formed by the adjacent parts adjacent to each other, the distance between the induction coil of the magnetic flux generating mechanism and the joint part is greater than the distance between the induction coil of the magnetic flux generating mechanism and the conductor tube; And, the thickness of the joint portion is set to be equal to or greater than one pipe thickness of the conductor pipe.
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