KR102238145B1 - Plumbing Preheater - Google Patents

Plumbing Preheater Download PDF

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Publication number
KR102238145B1
KR102238145B1 KR1020200009097A KR20200009097A KR102238145B1 KR 102238145 B1 KR102238145 B1 KR 102238145B1 KR 1020200009097 A KR1020200009097 A KR 1020200009097A KR 20200009097 A KR20200009097 A KR 20200009097A KR 102238145 B1 KR102238145 B1 KR 102238145B1
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South Korea
Prior art keywords
band member
steel pipe
pipe
circumferential surface
electrode terminal
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KR1020200009097A
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Korean (ko)
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최희석
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명문기업 주식회사
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Priority to KR1020200009097A priority Critical patent/KR102238145B1/en
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    • 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
    • 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
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/34—Preliminary treatment
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/60—Preliminary treatment
    • 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
    • B23K5/00—Gas flame welding
    • B23K5/213—Preliminary treatment
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/235—Preliminary treatment
    • 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
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/02—Welded joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D10/00—District heating systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/17—District heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Optics & Photonics (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

A pipe preheater is disclosed. According to an embodiment, the pipe preheater of the present invention comprises: a main body composed of a plurality of band members coupled to surround an outer circumferential surface of a steel pipe; an electrode terminal unit formed in the main body and connected to an electric wire; a coupling unit retracting the plurality of band members to be closely attached to the outer circumferential surface of the steel pipe; and a power supply unit connected to the electrode terminal unit to supply electricity. Accordingly, the present invention can generate heat in the steel pipe for artificially realizing thermal expansion during welding of the dual steel pipe used for regional heating, and uses electric energy to rapidly preheat and accurately preheat a preferred portion to significantly improve work efficiency.

Description

배관 예열 장치{Plumbing Preheater}Piping Preheater {Plumbing Preheater}

개시되는 내용은 배관 예열 장치에 관한 것으로, 더욱 상세하게는 강관에 부착되어 일정 온도로 가열될 수 있도록 전기적인 히팅작업을 하는 배관 예열 장치에 관한 것이다. Disclosed herein relates to a pipe preheating device, and more particularly, to a pipe preheating device attached to a steel pipe and performing electrical heating so that it can be heated to a predetermined temperature.

본 명세서에서 달리 표시되지 않는 한, 이 섹션에 설명되는 내용들은 이 출원의 청구항들에 대한 종래 기술이 아니며, 이 섹션에 포함된다고 하여 종래 기술이라고 인정되는 것은 아니다.Unless otherwise indicated herein, the content described in this section is not prior art to the claims of this application, and inclusion in this section is not admitted to be prior art.

지역 난방용으로 지중에 매설되는 배관은 이중 강관이 주로 사용되는데, 강관은 재질적인 특성상 열에 의한 팽창을 하는 특성이 있다. Duplex steel pipes are mainly used for pipes buried in the ground for district heating, and steel pipes have the characteristic of expanding due to heat due to their material properties.

지역 난방을 위해서 배관으로는 고온(약 110~120℃ 이하)의 난방 온수를 공급하게 되는데 이러한 난방 온수에 의해서 배관에는 응력이 발생되며, 이는 길이방향으로의 열팽창으로서 나타나게 된다.For district heating, high-temperature hot water (about 110 to 120℃ or less) is supplied to the pipe, and stress is generated in the pipe by this heating hot water, which appears as thermal expansion in the longitudinal direction.

따라서 배관 매설시 이러한 열팽창을 감안하여 시공을 하지 않게 되면 난방 중 배관의 특히 연결 부위가 열팽창에 의해 강성이 약화되면서 누수될 위험을 안게 되므로 신축으로 인한 길이 변동 오차를 감안하여야 한다.Therefore, when piping is not constructed in consideration of such thermal expansion, there is a risk of leakage due to weakening of the rigidity of the piping during heating due to thermal expansion of the pipe, so the error in length fluctuations due to expansion must be taken into account.

한편 지역 난방에서의 배관은 지면을 소정의 깊이로 도랑을 파 다수의 강관을 용접등에 의해서 연결되도록 하는 구성으로 이루어진다.Meanwhile, the piping in district heating consists of a structure in which a plurality of steel pipes are connected by welding or the like by digging a ditch through the ground to a predetermined depth.

배관은 이러한 다수의 강관을 약 200~300m씩 연결하여 하나의 구간을 형성하고, 다시 소정의 간격을 이격하여 다수의 강관을 연결하므로서 또다른 하나의 구간을 구비하는 방식으로 매설하게 된다.The pipe is buried in such a manner as to have another section by connecting a plurality of steel pipes by about 200 to 300 m each to form one section, and by connecting a plurality of steel pipes separated by a predetermined interval again.

이때 각 구간별 서로 이격되는 부위에는 통상 5~10m 이내의 짧은 길이인 강관을 삽입하여 각 구간의 끝단부와 용접등에 의해서 연결되게 하므로서 배관이 이루어지도록 하고 있다.At this time, a steel pipe of a short length, usually within 5 to 10m, is inserted into the part spaced apart from each other for each section, and the end of each section is connected by welding, so that the pipe is made.

한편 전술한 바와같이 강관은 고온의 온수에 의해서 길이 방향으로 미세하게 팽창되는 성질이 있으므로 구간과 구간을 단순히 상온의 조건에서 용접시키게 되면 차후에 난방 온수가 통과시 고온의 온수에 의해서 열팽창되어 특히 용접부위가 손상되어 누수되는 폐단이 발생될 수가 있다.On the other hand, as described above, steel pipes have the property of microscopic expansion in the longitudinal direction by hot hot water. Therefore, if the section and section are simply welded under room temperature conditions, when the heating hot water passes later, it is thermally expanded by the hot hot water. May be damaged, resulting in leaks.

이를 위해 배관시 열팽창에 대비하기 위해 현재 주로 사용하는 방법은 온수를 이용하는 예열이다.To this end, the method currently mainly used to prepare for thermal expansion during piping is preheating using hot water.

즉, 상온수를 배관에 채운 후 이동식 보일러를 설치하여 물을 소정의 온도로 가열시켜 배관의 일정 구간씩 열팽창이 되도록 하는 것이다.In other words, after filling the pipe with room temperature water, a mobile boiler is installed to heat the water to a predetermined temperature so that the pipe is thermally expanded by a certain section.

한편 대한민국 등록특허 10-0419928호에는 온수를 사용하지 않고 전기에너지를 이용하여 예열시키면서 관을 시공하는 방법에 관한 내용이 기재되어 있다. Meanwhile, Korean Patent Registration No. 10-0419928 discloses a method of constructing a pipe while preheating using electric energy without using hot water.

선행기술에서는 전기 예열기만 개시되어 있을뿐 그에 대한 상세한 구조를 제시된 바 없었다. In the prior art, only the electric preheater was disclosed, and no detailed structure was presented.

개시되는 내용은 지역 난방의 용도로 사용되는 이중 강관의 용접시공시 열팽창을 인위적으로 구현될 수 있도록 하기 위해 강관에 열을 발생시킬 수 있되 전기에너지를 이용함으로써 신속한 예열과 원하는 부위에 대한 정확한 예열이 가능하도록 하여 작업 능률이 월등히 향상될 수 있도록 하는 배관 예열 장치를 제공하는데 그 목적이 있다.The disclosed content is that heat can be generated in the steel pipe in order to artificially realize thermal expansion during the welding construction of double steel pipes used for district heating purposes, but by using electric energy, rapid preheating and accurate preheating for the desired area are possible. It is an object of the present invention to provide a piping preheating device that enables the work efficiency to be remarkably improved.

실시예의 목적은, 강관의 외주면을 감싸도록 결합되는 복수의 밴드부재로 이루어지는 본체; 복수의 밴드부재를 오므려서 강관의 외주면에 밀착되도록 하는 결합부; 전극단자부에 연결되어 전기를 공급하는 전력공급부;를 포함하는 배관 예열 장치에 의해 달성될 수 있다.The object of the embodiment is a body consisting of a plurality of band members coupled to surround the outer circumferential surface of the steel pipe; A coupling portion for closing a plurality of band members to be in close contact with the outer circumferential surface of the steel pipe; It can be achieved by a pipe preheating device including; a power supply unit connected to the electrode terminal to supply electricity.

실시예에 따르면, 본체에 형성되며, 전선이 연결되는 전극단자부를 포함한다. According to an embodiment, it is formed in the body and includes an electrode terminal portion to which an electric wire is connected.

실시예에 따르면, 본체의 밴드부재는 강관의 곡률에 부합되도록 호형으로 형성된다.According to the embodiment, the band member of the main body is formed in an arc shape so as to conform to the curvature of the steel pipe.

실시예에 따르면, 밴드부재는 도전성 금속소재일 수 있다. According to an embodiment, the band member may be a conductive metal material.

실시예에 따르면, 도전성 금속은 철 또는 구리이다. According to an embodiment, the conductive metal is iron or copper.

실시예에 따르면, 전극단자부는 도전소재로 이루어지고, 밴드부재에 부착되는 수평면과, 상기 수평면의 양단에 각각 수직면이 형성되어 'ㄷ'자 형상으로 이루어지고, 각 수직면에는 전선이 체결되는 통공이 형성된다. According to an embodiment, the electrode terminal portion is made of a conductive material, and a horizontal surface attached to the band member and vertical surfaces are formed at both ends of the horizontal surface to form a'C' shape, and each vertical surface has a through hole through which an electric wire is fastened. Is formed.

실시예에 따르면, 결합부는 복수의 밴드부재 간의 조임력을 조절하기 위한 조절수단을 구비하고, 조절수단은 복수의 밴드부재 각각의 단부에 형성된 브라켓과, 복수의 밴드부재에 각각 형성되어 맞대어진 양측 브라켓을 관통하여 결합되는 조임볼트를 포함한다.According to an embodiment, the coupling portion includes an adjusting means for adjusting the tightening force between the plurality of band members, and the adjusting means includes a bracket formed at an end of each of the plurality of band members, and both brackets formed on the plurality of band members and butted respectively. It includes a tightening bolt that is coupled through through.

개시된 실시예에 따르면, 지역 난방의 용도로 사용되는 이중 강관의 용접시공시 열팽창을 인위적으로 구현될 수 있도록 하기 위해 강관에 열을 발생시킬 수 있되 전기에너지를 이용함으로써 신속한 예열과 원하는 부위에 대한 정확한 예열이 가능하도록 하여 작업 능률이 월등히 향상될 수 있는 효과가 있다.According to the disclosed embodiment, heat can be generated in the steel pipe in order to artificially realize thermal expansion during the welding construction of a double steel pipe used for district heating, but by using electric energy, rapid preheating and accurate By enabling preheating, there is an effect that work efficiency can be remarkably improved.

도 1은 일 실시예에 따른 배관 예열 장치를 나타낸 사시도,
도 2는 일 실시예에 따른 배관 예열 장치를 나타낸 분해사시도,
도 3은 일 실시예에 따른 배관 예열 장치의 사용상태를 나타낸 부분 확대 사시도,
도 4는 다른 실시예에 따른 배관 예열 장치의 사용상태를 나타낸 부분 확대 사시도,
도 5는 실시예에 따른 배관 예열 장치의 시공 예를 나타낸 평면도,
도 6은 다른 실시예에 따른 배관 예열 장치의 결합부를 나타낸 도면,
도 7은 또다른 실시예에 따른 배관 예열 장치의 결합부를 나타낸 도면.1 is a perspective view showing a pipe preheating apparatus according to an embodiment,
2 is an exploded perspective view showing a pipe preheating device according to an embodiment,
3 is a partially enlarged perspective view showing a state of use of a pipe preheating device according to an embodiment,
4 is a partially enlarged perspective view showing a state of use of a pipe preheating device according to another embodiment,
5 is a plan view showing a construction example of a pipe preheating device according to the embodiment;
6 is a view showing a coupling part of a pipe preheating device according to another embodiment,
7 is a view showing a coupling part of the pipe preheating device according to another embodiment.

이하 바람직한 실시예를 첨부된 도면을 토대로 상세하게 설명하면 다음과 같다.Hereinafter, preferred embodiments will be described in detail based on the accompanying drawings.

하기에서 설명될 실시예는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이며, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.The embodiments to be described below are intended to be described in detail enough to allow those of ordinary skill in the art to carry out the invention easily, thereby limiting the technical spirit and scope of the present invention. I don't mean it.

또한, 도면에 도시된 구성요소의 크기나 형상 등은 설명의 명료성과 편의상 과장되게 도시될 수 있으며, 본 발명의 구성 및 작용을 고려하여 특별히 정의된 용어들은 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있고, 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 함을 밝혀둔다. In addition, the size or shape of the constituent elements shown in the drawings may be exaggerated for clarity and convenience of description, and terms specially defined in consideration of the configuration and operation of the present invention vary according to the intention or custom of users and operators. It should be noted that, and definitions for these terms should be made based on the contents throughout the present specification.

첨부된 도면 중에서, 도 1은 일 실시예에 따른 배관 예열 장치를 나타낸 사시도, 도 2는 일 실시예에 따른 배관 예열 장치를 나타낸 분해사시도, 도 3은 일 실시예에 따른 배관 예열 장치의 사용상태를 나타낸 부분 확대 사시도, 도 4는 다른 실시예에 따른 배관 예열 장치의 사용상태를 나타낸 부분 확대 사시도, 도 5는 실시예에 따른 배관 예열 장치의 시공 예를 나타낸 평면도, 도 6은 다른 실시예에 따른 배관 예열 장치의 결합부를 나타낸 도면, 도 7은 또다른 실시예에 따른 배관 예열 장치의 결합부를 나타낸 도면이다. In the accompanying drawings, FIG. 1 is a perspective view showing a pipe preheating device according to an embodiment, FIG. 2 is an exploded perspective view showing a pipe preheating device according to an embodiment, and FIG. 3 is a use state of the pipe preheating device according to an embodiment. A partially enlarged perspective view showing, Figure 4 is a partially enlarged perspective view showing a state of use of a pipe preheating device according to another embodiment, Figure 5 is a plan view showing a construction example of the pipe preheating device according to the embodiment, Figure 6 is a different embodiment A view showing a coupling part of a pipe preheating device according to another embodiment, and FIG. 7 is a view showing a coupling part of a pipe preheating device according to another embodiment.

일 실시예에 따른 배관 예열 장치(A)는, 강관(100)의 외주면을 감싸도록 결합되는 복수의 밴드부재(220,240)로 이루어지는 본체(200); 본체(200)에 형성되며, 전선(500)이 연결되는 전극단자부(300); 복수의 밴드부재(220,240)를 오므려서 강관(100)의 외주면에 밀착되도록 하는 결합부(400); 전극단자부에 연결되어 전기를 공급하는 전력공급부(미도시);를 포함하여 구성된다.The pipe preheating apparatus according to an embodiment (A) includes a main body 200 made of a plurality of band members 220 and 240 coupled to surround the outer circumferential surface of the steel pipe 100; An electrode terminal portion 300 formed on the main body 200 and to which the electric wire 500 is connected; A coupling part 400 that closes the plurality of band members 220 and 240 so as to be in close contact with the outer circumferential surface of the steel pipe 100; It is configured to include; a power supply unit (not shown) connected to the electrode terminal to supply electricity.

본체(200)는 반원형태의 호형으로 된 2개의 밴드부재(220,240)가 마주보게 결합되어 원형을 이루게 된다.The main body 200 has a circular shape by combining two band members 220 and 240 in a semicircular arc shape to face each other.

강관(100)의 외주면에 2개의 밴드부재(220,240)가 밀착되어 맞결합됨으로써 강관을 감싸게 된다. The two band members 220 and 240 are in close contact with the outer circumferential surface of the steel pipe 100 and are mated together to surround the steel pipe.

따라서 밴드부재(220,240)는 강관(100)의 곡률에 부합되도록 호형으로 형성된다. Accordingly, the band members 220 and 240 are formed in an arc shape to match the curvature of the steel pipe 100.

밴드부재(220,240)는 도전성 금속소재로 이루어진다. The band members 220 and 240 are made of a conductive metal material.

바람직하게는 도전성 금속은 철 또는 구리일 수 있다.물론 이에 한정되지 않고 다양한 도전금속이 적용될 수 있음은 당연할 것이다. Preferably, the conductive metal may be iron or copper. Of course, it is not limited thereto and various conductive metals may be applied.

한편 본체(200)에는 다수의 전극단자부(300)가 형성되고, 각 전극단자부(300)에 전력공급부의 전선(500)이 연결되어 전기가 흐르도록 한다. Meanwhile, a plurality of electrode terminal portions 300 are formed in the main body 200, and an electric wire 500 of a power supply unit is connected to each electrode terminal portion 300 to allow electricity to flow.

전극단자부(300)는 도전소재로 이루어지고, 밴드부재(220,240)의 내주면에 부착되는 수평면(320)과, 상기 수평면(320)의 양단에 각각 수직면(340)이 형성되어 'ㄷ'자 형상으로 이루어지고,The electrode terminal part 300 is made of a conductive material, and has a horizontal surface 320 attached to the inner circumferential surfaces of the band members 220 and 240 and a vertical surface 340 formed at both ends of the horizontal surface 320 to form a'c' shape. Done,

각 수직면(340)에는 전선(500)이 체결되는 통공(342)이 형성된다. Each vertical surface 340 is formed with a through hole 342 through which the electric wire 500 is fastened.

결합부(400)는 복수의 밴드부재(220,240) 간의 조임력을 조절하기 위한 조절수단을 구할 수 있다. The coupling part 400 may obtain an adjustment means for adjusting the tightening force between the plurality of band members 220 and 240.

조절수단은 복수의 밴드부재(220,240) 각각의 단부에 형성된 브라켓(420)과, The adjusting means includes a bracket 420 formed at an end of each of the plurality of band members 220 and 240,

복수의 밴드부재(220,240)에 각각 형성되어 맞대어진 양측 브라켓(420)을 관통하여 결합되는 조임볼트(440)를 포함하여 구성된다. It is configured to include a tightening bolt 440 which is formed on each of the plurality of band members 220 and 240 and is coupled through the brackets 420 on both sides that are butted.

조임볼트(440)는 외주면에 나사산이 형성되고 일단에 육각형 머리가 형성된 것이며, 브라켓(420)에 나사결합으로 관통하고 나사결합된 후 타단에는 너트(460)를 체결하여 잠그도록 한다. The tightening bolt 440 has a screw thread formed on the outer circumferential surface and a hexagonal head formed at one end, penetrates through the bracket 420 by screwing, and after being screwed, a nut 460 is fastened to the other end to lock it.

조임볼트(440)의 길이만큼 밴드부재(220,240)의 직경을 넓게할 수 있으므로 관경이 상이한 강관(100)에도 적용될 수 있다. Since the diameter of the band members 220 and 240 can be widened by the length of the tightening bolt 440, it can be applied to the steel pipe 100 having a different pipe diameter.

한편 도 4에 도시된 바와 같이, 다른 실시예에 따른 배관 예열 장치(A2)는, On the other hand, as shown in Figure 4, the pipe preheating apparatus (A2) according to another embodiment,

강관(100)의 외주면을 감싸도록 결합되는 복수의 밴드부재(220,240)로 이루어지는 본체(200); A main body 200 comprising a plurality of band members 220 and 240 coupled to surround the outer circumferential surface of the steel pipe 100;

복수의 밴드부재(220,240)를 오므려서 강관(100)의 외주면에 밀착되도록 하는 결합부(400);A coupling part 400 for closing the plurality of band members 220 and 240 so as to be in close contact with the outer circumferential surface of the steel pipe 100;

결합부(400)에 연결되어 전기를 공급하는 전력공급부(미도시);를 포함하여 구성된다.It is configured to include a power supply unit (not shown) connected to the coupling unit 400 to supply electricity.

즉, 다른 실시예와 전술한 첫번째 실시예 간 상이점은 전극단자부가 없는 것이다. 따라서 직접 결합부(400)에 전선을 연결하여 전기를 공급하게 된다. That is, the difference between the other embodiments and the above-described first embodiment is that there is no electrode terminal part. Therefore, electricity is supplied by connecting a wire to the direct coupling unit 400.

한편 도 6에 도시된 바와 같이, 상기 결합부(400a)는 제1밴드부재(220,240)는 외면에 형성된 걸림돌기(230)와, 걸림돌기(230)의 외측에 형성되어 양측이 개구된 버클(250)을 구비하고, 제2밴드부재(220,240)는 단부 내면에 다단의 걸림턱(245)이 형성되어 이루어진 것이며, 제2밴드부재(220,240)가 제1밴드부재(220,240)의 버클(250)에 삽입되어 결합된다. Meanwhile, as shown in FIG. 6, the first band members 220 and 240 are formed on the outer side of the locking protrusion 230 and the locking protrusion 230 is formed on the outer side of the coupling part 400a to open both sides of the buckle ( 250), and the second band members 220 and 240 are formed by forming multi-stage locking protrusions 245 on the inner surfaces of the ends, and the second band members 220 and 240 are the buckles 250 of the first band members 220 and 240 Is inserted into and combined.

따라서 제2밴드부재(220,240)를 제1밴드부재(220,240)의 버클(250)에 삽입하여 밀면 적당한 위치에서 걸림돌기(230)가 걸림턱(245)에 걸려져 고정된 상태가 되어 해체되지 않게 된다. Therefore, when the second band members 220 and 240 are inserted into the buckle 250 of the first band members 220 and 240 and pushed, the locking protrusion 230 is caught by the locking protrusion 245 at an appropriate position and is fixed so that it is not disassembled. do.

한편 또다른 실시예에 따르면, 도 7에 도시된 바와 같이, 결합부(400b)는 제1밴드부재(220)의 단부에 형성되어 개폐작동되는 클램프고리(620); 제2밴드부재(240)의 단부 외면에 형성되어 상기 클램프고리(620)가 결착되는 걸림구(640)를 포함하여 구성된다. Meanwhile, according to another embodiment, as shown in FIG. 7, the coupling portion 400b includes a clamp ring 620 formed at an end of the first band member 220 to be opened and closed; It is formed on the outer surface of the end of the second band member 240 is configured to include a locking hole 640 to which the clamp ring 620 is fastened.

따라서 제1밴드부재(220)와 제2밴드부재(240) 각각의 단부가 맞닿도록 한 후 클램프고리(620)를 걸림구(640)에 걸어서 체결시켜 고정되도록 한다. Therefore, after the ends of each of the first band member 220 and the second band member 240 are brought into contact with each other, the clamp ring 620 is hooked to the locking hole 640 to be fixed.

이와 같이 구성된 본 발명의 작용을 도 5를 참조하여 설명하면 다음과 같다.The operation of the present invention configured as described above will be described with reference to FIG. 5 as follows.

지면을 굴착하여 도랑(T)을 형성하고, 이 도랑에 2열로 강관(100,100')을 매설시킨다. The ground is excavated to form a ditch (T), and steel pipes (100, 100') are buried in two rows in the ditch.

각 열 강관(100,100')의 양측 끝단에 각각 본 발명의 배관 예열 장치(A)를 장착한다. The pipe preheating apparatus (A) of the present invention is mounted at both ends of each of the heat steel pipes 100 and 100'.

양측 강관(100,100')의 일측 끝단에 장착된 양측 배관 예열 장치(A)를 서로 전선으로 연결하여 전기가 흐르도록 한다. Both pipe preheating devices (A) mounted at one end of both steel pipes 100 and 100' are connected to each other with wires to allow electricity to flow.

이후 2열로 배치된 각 강관(100,100')의 타측 끝단에 장착된 양측 배관 예열 장치(A)에 각각 전원공급부(540)와 전선(500)으로 연결한다.Thereafter, the two pipe preheating devices (A) mounted on the other ends of each of the steel pipes (100, 100') arranged in two rows are connected to each of the power supply units (540) and wires (500).

이후 일측 열 강관(100')에 장착된 배관 예열 장치(A)에 양극 전원(+)이 공급되도록 하고, 타측 열 강관(100)에 장착된 배관 예열 장치(A)에 음극 전원(-)이 공급되도록 한다. After that, positive power (+) is supplied to the pipe preheating device (A) mounted on one heat steel pipe 100', and the negative power (-) is supplied to the pipe preheating device (A) mounted on the other heat steel pipe (100). Make sure it is supplied.

이렇게 일단의 배관 예열 장치(A)에 전기를 인입되고, 타단의 배관 예열 장치(A)를 통해 전기가 인출되어 전기적인 흐름이 이루어지게 된다. In this way, electricity is supplied to one end of the pipe preheating device (A), and electricity is drawn through the other end of the pipe preheating device (A) so that an electrical flow is achieved.

강관(100,100')에 전체적으로 열이 발생됨으로써 대략 60~80℃로 예열될 수 있다. Since heat is generated as a whole in the steel pipes 100 and 100 ′, it may be preheated to approximately 60 to 80°C.

이렇게 예열에 의해 열팽창되도록 한 후 강관(100)의 단부끼리 용접시킬 수 있게 된다. 이에 대해서는 In this way, the ends of the steel pipe 100 can be welded after being thermally expanded by preheating. About this

따라서 상온 상태보다 높은 온도로 열팽창된 상태에서 용접됨으로써 냉각 수축으로 인한 용접부위의 피로 누적을 감소시켜 수 있어 용접부의 파손이 방지될 수 있다. Therefore, by welding in the state of being thermally expanded to a higher temperature than the normal temperature state, it is possible to reduce the accumulation of fatigue in the welded part due to cooling contraction, and thus the damage of the welded part may be prevented.

비록 바람직한 실시예와 관련하여 설명되어졌지만, 발명의 요지와 범위로부터 벗어남이 없이 다양한 수정 및 변형이 가능한 것은 당업자라면 용이하게 인식할 수 있을 것이며, 이러한 변경 및 수정은 모두 첨부된 청구의 범위에 속함은 자명하다.Although it has been described in connection with the preferred embodiment, it will be readily recognized by those skilled in the art that various modifications and variations are possible without departing from the gist and scope of the invention, and all such changes and modifications fall within the scope of the appended claims. Is self-explanatory.

100 : 강관 200 : 본체
220, 240 : 밴드부재 300 : 전극단자부
400 : 결합부 420 : 브라켓
440 : 조임볼트 460 : 너트100: steel pipe 200: main body
220, 240: band member 300: electrode terminal part
400: coupling portion 420: bracket
440: tightening bolt 460: nut

Claims (6)

강관의 외주면을 감싸도록 결합되는 제1밴드부재와 제2밴드부재로 이루어지는 본체;
상기 제1밴드부재와 제2밴드부재를 상기 강관의 외주면에 밀착되도록 하는 결합부; 및
상기 결합부에 연결되어 상기 강관의 예열을 위한 전기를 공급하는 전력공급부를 포함하고,
상기 제1밴드부재와 상기 제2밴드부재는 상기 강관의 곡률에 부합되도록 반원 형태의 호형으로 형성되고, 도전성 금속소재로 형성되며,
상기 제1밴드부재와 제2밴드부재 간의 결합부의 조임력이 조절될 수 있도록 상기 결합부는 상기 제1밴드부재의 단부 외면에 형성된 걸림돌기와, 상기 걸림돌기의 외측에 형성되어 양측이 개구된 버클과, 상기 제1밴드부재의 버클 내에 삽입되어 결합되는 상기 제2밴드부재의 단부 내면에 형성되어 상기 걸림돌기가 선택적으로 걸려지는 다단의 걸림턱을 포함하며,
상기 본체에 형성되며, 상기 전력공급부의 전선이 연결되는 다수의 전극단자부;를 포함하고,
상기 전극단자부는
도전소재로 이루어지고, 상기 제1밴드부재와 제2밴드부재의 내주면에 부착되는 수평면과, 상기 수평면의 양단에 각기 수직면이 형성되어 'ㄷ'자 형상으로 이루어지고, 각 수직면에는 상기 전선이 체결되는 통공이 형성되며,
상기 결합부는,
상기 제1밴드부재의 단부에 형성되어 개폐작동되는 클램프고리; 및
상기 제2밴드부재의 단부 외면에 형성되어 상기 클램프고리가 결착되는 걸림구;를 더 포함하며,
상기 클램프고리가 상기 걸림구에 걸려져 체결 고정되는 것을 특징으로 하는 배관 예열 장치.A body comprising a first band member and a second band member coupled to surround the outer circumferential surface of the steel pipe;
A coupling portion for bringing the first band member and the second band member into close contact with the outer circumferential surface of the steel pipe; And
A power supply unit connected to the coupling unit to supply electricity for preheating the steel pipe,
The first band member and the second band member are formed in a semicircular arc shape to match the curvature of the steel pipe, and are formed of a conductive metal material,
The coupling portion has a locking protrusion formed on an outer surface of an end of the first band member and a buckle formed on the outer side of the locking protrusion to open both sides so that the tightening force of the coupling portion between the first band member and the second band member can be adjusted, And a multi-stage locking protrusion formed on an inner surface of an end portion of the second band member that is inserted into and coupled to the buckle of the first band member to selectively engage the locking projection,
Includes; a plurality of electrode terminal portions formed on the main body and to which the electric wires of the power supply unit are connected,
The electrode terminal part
A horizontal surface made of a conductive material and attached to the inner circumferential surface of the first band member and the second band member, and vertical surfaces are formed at both ends of the horizontal surface to form a'C' shape, and the wires are fastened to each vertical surface. A through hole is formed,
The coupling part,
A clamp ring formed at an end of the first band member to be opened and closed; And
It is formed on the outer surface of the end of the second band member, a locking hole to which the clamp ring is fastened; further includes,
Piping preheating device, characterized in that the clamp ring is fastened and fixed to the locking hole. 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210048174A (en) * 2019-10-23 2021-05-03 (주) 엘앤티 Method for constructing district heating pipe

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03117796A (en) * 1989-09-28 1991-05-20 Fujipura Seiko:Kk Fastening band
JPH04337278A (en) * 1991-05-15 1992-11-25 Matsushita Electric Ind Co Ltd Electric heating element device
JPH07142156A (en) * 1993-11-19 1995-06-02 Hitachi Ltd Heating device
KR950014814U (en) * 1993-11-11 1995-06-17 Band heater
JPH11325376A (en) * 1998-03-13 1999-11-26 Tanika Denki Hanbai Kk Sake heating tube and sake-warming device having the same
KR200279294Y1 (en) * 2002-03-21 2002-06-24 양재목 Tightener of bend type heat
KR101165965B1 (en) * 2012-01-13 2012-07-18 (주) 신동아건축종합건축사사무소 Freezingproof apparatus for ouy wall pipe for building
KR102025225B1 (en) * 2019-01-31 2019-09-25 (주) 엘앤티 Electric preheating device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03117796A (en) * 1989-09-28 1991-05-20 Fujipura Seiko:Kk Fastening band
JPH04337278A (en) * 1991-05-15 1992-11-25 Matsushita Electric Ind Co Ltd Electric heating element device
KR950014814U (en) * 1993-11-11 1995-06-17 Band heater
JPH07142156A (en) * 1993-11-19 1995-06-02 Hitachi Ltd Heating device
JPH11325376A (en) * 1998-03-13 1999-11-26 Tanika Denki Hanbai Kk Sake heating tube and sake-warming device having the same
KR200279294Y1 (en) * 2002-03-21 2002-06-24 양재목 Tightener of bend type heat
KR101165965B1 (en) * 2012-01-13 2012-07-18 (주) 신동아건축종합건축사사무소 Freezingproof apparatus for ouy wall pipe for building
KR102025225B1 (en) * 2019-01-31 2019-09-25 (주) 엘앤티 Electric preheating device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210048174A (en) * 2019-10-23 2021-05-03 (주) 엘앤티 Method for constructing district heating pipe
KR102252202B1 (en) 2019-10-23 2021-05-14 (주) 엘앤티 Method for constructing district heating pipe

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