JPS5892000A - Direct heating method of pipeline - Google Patents

Direct heating method of pipeline

Info

Publication number
JPS5892000A
JPS5892000A JP56190398A JP19039881A JPS5892000A JP S5892000 A JPS5892000 A JP S5892000A JP 56190398 A JP56190398 A JP 56190398A JP 19039881 A JP19039881 A JP 19039881A JP S5892000 A JPS5892000 A JP S5892000A
Authority
JP
Japan
Prior art keywords
pipeline
phase
power supply
voltage
direct heating
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.)
Pending
Application number
JP56190398A
Other languages
Japanese (ja)
Inventor
Akira Iino
昭 飯野
Yuzo Sakata
坂田　有三
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Corp
Original Assignee
Shin Kobe Electric Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shin Kobe Electric Machinery Co Ltd filed Critical Shin Kobe Electric Machinery Co Ltd
Priority to JP56190398A priority Critical patent/JPS5892000A/en
Publication of JPS5892000A publication Critical patent/JPS5892000A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
    • F16L53/30—Heating of pipes or pipe systems
    • F16L53/35—Ohmic-resistance heating
    • F16L53/37—Ohmic-resistance heating the heating current flowing directly through the pipe to be heated

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)
  • Pipeline Systems (AREA)

Abstract

PURPOSE:To make voltages at both ends of a pipeline at the same phase and to require no insulation between the pipeline and buildings by connecting one phase of a three-phase power supply to both ends of the pipeline and by connecting other two phases to the intermediate portions of the pipeline at a proper distance to flow the current. CONSTITUTION:One phase of a three-phase power supply is connected to both ends of a pipeline and other two phases are connected to the intermediate portions of the pipeline at a proper distance to flow the current. Connecting points are, for instance, those points to divide the length of the pipeline into three uniform portions, and if the power supply is assumed as 200V, the secondary voltage from a three-phase transformer can be used as one third or less as compared with that when a single-phase power supply is used. Accordingly, voltages at both ends of the pipeline can be made at the same phase, thereby no insulation is required between the pipeline and buildings and the voltage one- third of that in the past can meet the requirement, resulting in a safer operation.

Description

【発明の詳細な説明】 本発明は、パイプラインの直接加熱方法の改良に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for direct heating of pipelines.

例えば、溶融金属をパイプラインを通じて供給する場合
、パイプラインの加熱が必要となる。For example, when feeding molten metal through a pipeline, heating of the pipeline is required.

加熱方法として、パイプに電熱線を巻きつけて発熱させ
る方法が一般的であるが、これに対して鉄製等のパイプ
に直接過電し発熱させるのが直接加熱方法である。従来
、この直接加熱には単相電源を使用しており、電源が２
００Ｖとすると、２次側電圧は単相変圧器を用いてその
鬼以下に下げてパイプラインの両端に通電している。し
かしながら、この場合、パイプラインの両端に電圧がか
かるため、施工時にパイプラインと建物との絶縁をして
お（ことが必要であり、パイプラインの並列使用が相互
干渉によりできない欠点がある。また、パイプラインを
長（するとそれに伴なって電圧を高くしなければならず
、効率も悪い。A common heating method is to wrap a heating wire around a pipe to generate heat, but in contrast, a direct heating method involves directly applying an overcurrent to a pipe made of iron or the like to generate heat. Conventionally, this direct heating uses a single-phase power supply;
When it is 00V, the secondary voltage is lowered to below that level using a single-phase transformer, and electricity is applied to both ends of the pipeline. However, in this case, since voltage is applied to both ends of the pipeline, it is necessary to insulate the pipeline and the building during construction, which has the disadvantage that parallel use of pipelines cannot be done due to mutual interference. , the pipeline is long (and therefore the voltage must be increased accordingly, and the efficiency is also poor).

本発明は、直接加熱に伴なう上記のような欠点を除去し
、施工が簡単で効率のよい直接加熱方法を提供するもの
である。The present invention eliminates the above-mentioned drawbacks associated with direct heating, and provides a direct heating method that is easy to implement and highly efficient.

即ち、本発明は、三相電源を用いるものであり、その−
相をパイプラインの両端に接続し、他の二相をパイプラ
インの中間部分に適宜の間隔をもって接続し通電するこ
とを特徴とするものである。接続箇所は、例えばパイプ
ラインの長さを３等分する点である。電源が２００ｖと
Ａｌｌ’１ すると、２次貴電圧は三相変圧器を用いて単相電源を用
いる場合のイ以下にし使用することができる。That is, the present invention uses a three-phase power supply, and its -
It is characterized in that one phase is connected to both ends of the pipeline, and the other two phases are connected to the middle part of the pipeline at appropriate intervals and energized. The connection point is, for example, a point that divides the length of the pipeline into three equal parts. When the power supply is 200V, the secondary noble voltage can be used by using a three-phase transformer to lower it to less than the voltage required when using a single-phase power supply.

上述のよう化１本発明ては、パイプライン両端の電圧は
同相となるので建物との絶縁が不要となり、施工が簡単
となる。また、電圧は従来のにで済むので安全であり、
同電圧であればそれだけパイプラインを長くすることが
可能となる。更薔こ、パイプラインの並列使用が可能で
あると共に三相電源を用いるので効率もよいなど、そめ
工業的価値は極めて大なるものである。In the above-mentioned embodiment of the present invention, the voltages at both ends of the pipeline are in the same phase, so there is no need to insulate the pipeline from the building, which simplifies construction. In addition, it is safe because the voltage is just the conventional one.
If the voltage is the same, the pipeline can be made longer. Furthermore, it has great industrial value, as it allows pipelines to be used in parallel and is highly efficient because it uses a three-phase power supply.

特許出１人1 person with patent

Claims (1)

【特許請求の範囲】[Claims] 三相電源の一相をパイプラインの両端に接続し他の二相
をパイプラインの中間部分に適宜の間隔をもって接続し
通電することを特徴とするパイプラインの直接加熱方法
。A method for directly heating a pipeline, characterized in that one phase of a three-phase power supply is connected to both ends of the pipeline, and the other two phases are connected to the middle part of the pipeline at appropriate intervals and energized.
JP56190398A 1981-11-27 1981-11-27 Direct heating method of pipeline Pending JPS5892000A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56190398A JPS5892000A (en) 1981-11-27 1981-11-27 Direct heating method of pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56190398A JPS5892000A (en) 1981-11-27 1981-11-27 Direct heating method of pipeline

Publications (1)

Publication Number Publication Date
JPS5892000A true JPS5892000A (en) 1983-06-01

Family

ID=16257485

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56190398A Pending JPS5892000A (en) 1981-11-27 1981-11-27 Direct heating method of pipeline

Country Status (1)

Country Link
JP (1) JPS5892000A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6278095B1 (en) 1999-08-03 2001-08-21 Shell Oil Company Induction heating for short segments of pipeline systems
US6278096B1 (en) 1999-08-03 2001-08-21 Shell Oil Company Fabrication and repair of electrically insulated flowliness by induction heating
US6509557B1 (en) 1999-08-03 2003-01-21 Shell Oil Company Apparatus and method for heating single insulated flowlines
JP2015017794A (en) * 2013-06-14 2015-01-29 トクデン株式会社 Fluid heating device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52115421A (en) * 1976-03-25 1977-09-28 Mitsubishi Electric Corp Heating of pipe-line
JPS5680584A (en) * 1979-12-07 1981-07-01 Nippon Kokan Kk Heating method of pipeline

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52115421A (en) * 1976-03-25 1977-09-28 Mitsubishi Electric Corp Heating of pipe-line
JPS5680584A (en) * 1979-12-07 1981-07-01 Nippon Kokan Kk Heating method of pipeline

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6278095B1 (en) 1999-08-03 2001-08-21 Shell Oil Company Induction heating for short segments of pipeline systems
US6278096B1 (en) 1999-08-03 2001-08-21 Shell Oil Company Fabrication and repair of electrically insulated flowliness by induction heating
US6509557B1 (en) 1999-08-03 2003-01-21 Shell Oil Company Apparatus and method for heating single insulated flowlines
JP2015017794A (en) * 2013-06-14 2015-01-29 トクデン株式会社 Fluid heating device

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