KR830002711Y1 - Resin Extruder for Power Cable Connection - Google Patents

Resin Extruder for Power Cable Connection Download PDF

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Publication number
KR830002711Y1
KR830002711Y1 KR2019810002228U KR810002228U KR830002711Y1 KR 830002711 Y1 KR830002711 Y1 KR 830002711Y1 KR 2019810002228 U KR2019810002228 U KR 2019810002228U KR 810002228 U KR810002228 U KR 810002228U KR 830002711 Y1 KR830002711 Y1 KR 830002711Y1
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South Korea
Prior art keywords
extruder
mold
power cable
resin
cable connection
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KR2019810002228U
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Korean (ko)
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KR830000671U (en
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시게루 가또오
히로미 야부다니
고오지로오 이시세
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스미도모덴끼 고오교오 가부시기가이샤
다부찌 노보루
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Priority to KR2019810002228U priority Critical patent/KR830002711Y1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/252Drive or actuation means; Transmission means; Screw supporting means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/025General arrangement or layout of plant
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

내용 없음.No content.

Description

전력케이블 접속용 수지 압출기Resin Extruder for Power Cable Connection

제1도는 본 고안의 1실시예를 표시.1 shows an embodiment of the present invention.

제2도는 본 고안의 스크루의식 압출기 본체의 1예를 표시한다.2 shows an example of the screw extruder body of the present invention.

본 고안은 전력케이블의 접속용 압출기에 관한 것이다. 고압 혹은 초고압케이블의 대부분은 지중에 매설되며 접속작업은 맨호울등 대단히 좁은 장소에서 행하여진다.The present invention relates to an extruder for connecting a power cable. Most of the high or ultra high voltage cables are buried underground and the connection work is done in very narrow places such as manholes.

한편, 폴리에틸렌이나 가교(架橋) 폴리에틸렌을 절연층으로 하는 고압 또는 초고압케이블의 접속부에 있어서는, 도체의 접속후, 그절연층을 형성시키는 방법으로서, 폴리에틸렌이나 가교폴리에틸렌등을 테이프모양으로하여 감거나, 금형을 사용하여서, 상기한 수지를 주형(注型)한후, 가압하에서 가열하여, 케이블 절연층과 일체화시키는 방법이 널리 사용되고 있다. 그러나, 고압 혹은 초고압케이블에 있어서는, 절연체의 이물질을 감아넣으면 케이블의 전기성능의 저하에 큰 영향을 주므로, 이와 같은 염려가 극히 적은 금형을 사용하여 주형을 하는 방법이 가장 바람직하다.On the other hand, in the connection portion of a high pressure or ultra high voltage cable using polyethylene or crosslinked polyethylene as an insulating layer, a method of forming the insulating layer after the conductor is connected, such as polyethylene, crosslinked polyethylene, etc. Using a metal mold | die, the above-mentioned resin is cast, and it heats under pressurization, and the method of integrating with a cable insulation layer is widely used. However, in a high voltage or ultra high voltage cable, if a foreign material of an insulator is wrapped around, the electrical performance of the cable is greatly affected. Therefore, a mold using a mold having such a low concern is most preferable.

그러나, 금형에 의하여, 주형을하여 작업을 한다고하여도, 폴리에틸렌이나 가교폴리에틸렌을 압출하는 압출기를 지상에 놓고, 압출되는 수지재료의 통로를 긴것으로 하여, 지상에서 맨호울안의 접속장소까지 수지재료를 이송하는 것은 비현신적인 것으로, 결국 접속장소에 근접하여 압출기를 설치하는, 즉 맨호울안에 압출기를 설치하는 것이 필요하게된다. 이와 같은 목적을 달성하기 위하여 압출기 및 여기에 부속되는 설비를 어떻게 작게할 것인가 하는것이, 금형에 의하여 주형하여서 접속부절연층을 형성시키기 위한 하나의 과제이었다.However, even if the mold is to be worked by the mold, the extruder for extruding polyethylene or crosslinked polyethylene is placed on the ground, and the passage of the extruded resin material is made long, so that the resin material is connected from the ground to the connection place in the manhole. Transfer is unrealistic, and eventually it is necessary to install the extruder in close proximity to the connection site, i.e. to install the extruder in the manhole. In order to achieve the above object, how to reduce the extruder and the equipment attached thereto was one problem for forming a connection part insulating layer by molding by a mold.

본 고안에 있어서는, 스쿠루의 식압출기의 구동부로서 유압모우터를 사용하고, 이 유압모우터에 힘을 가하여주는 유압유닛(unit)은 분리시켜서 지상에 놓도록 배치하여, 좁은 지상으로부터의 입구, 좁은 맨호울안의 작업공간에 있어서도, 충분히 작업성이 있는 전력케이블 접속용의 압출기를 제공하려고 하는 것이다. 주형하는 방법으로서는, 스크루우식 압출기외에도, 사출성형기를 사용한다거나, 램(ram)식의 압출기를 사용하는 것등을 생각할 수 있으나, 보이드(void)가 생기는 것을 고려하면, 1회의 주형으로 마치는 것이 필요하며, 이와 같은 관점에서 본다면, 초고압의 절연층의 두꺼운 것에 적용시킬 경우, 사출성형기나 램식의 압출기로서는 필연적으로 설비가 대형으로 되지 않을 수가 없다고 하는 난점이 있어, 실제선로에 적용시키는 것은 곤란하다.In the present invention, a hydraulic motor is used as a driving part of the screw extruder of the screw, and the hydraulic unit for applying the force to the hydraulic motor is separated to be placed on the ground, and the inlet from the narrow ground, Even in the work space in a narrow manhole, it is going to provide the extruder for power cable connection with sufficient workability. As a method of casting, in addition to the screw extruder, an injection molding machine or a ram extruder may be used. However, considering that voids are generated, it is necessary to finish with one mold. In view of this, when applied to the thick of the ultra-high pressure insulating layer, an injection molding machine or a ram extruder inevitably has a difficulty in that the equipment must be large, and it is difficult to apply it to an actual line.

그런데 금형을 사용하여서 가교제를 배합시킨 폴리에틸렌등을 주형할 때에, 금형내에서 수지가 냉각되지 않도록 금형을 예열하지만, 금형 온도를 너무 올리면 케이블 절연층의 가교폴리에틸렌층이 변형된다. 또 가교제가 들어있는 폴리에틸렌을 주입시킬 때에는 가교제가 분리된다고 하는 문제가 생기므로 주입수지자체 및 금형의 온도를 미리 높은온도로 올릴수 없다고하는 제약이 있어서, 수지를 주입시키는 속도도 느리고, 이 때문에, 주입에 시간이 걸렸을 경우, 금형의 벽면이나 케이블의 계면에서 수지가 냉각되어 굳어져서 보이드를 만들염려가 있다.By the way, when molding the polyethylene etc. which mix | blended the crosslinking agent using a metal mold | die, the metal mold | die is preheated so that resin may not be cooled in a metal mold | die, but when the mold temperature is raised too much, the crosslinked polyethylene layer of a cable insulation layer will deform | transform. In addition, when the polyethylene containing the crosslinking agent is injected, there is a problem that the crosslinking agent is separated.Therefore, there is a restriction that the temperature of the injection resin itself and the mold cannot be raised to a high temperature in advance. If it takes time, the resin cools and hardens at the wall surface of the mold or at the interface of the cable, which may cause voids.

이것을 방지하기 위하는 주입속도를 증가시켜, 재료가 냉각되기전에 주형을 완료시키면된다. 예를들면, 154KD, 275KV 크라스의 초고압 가교폴리에틸렌 절연케이블에 적용시키는데에는, 적어도 8㎏/hr 정도의 주입속도를 확보하는 것이 필요하다. 이와 같은 관계로, 수지의 온도상승을 방지하고, 충분한 압출속도를 얻는데에는, 실린더 직경 40mmø 이상의 압출기를 사용하는 것이 바람직하는 것이나, 통상적인 타입의 스크루우식 압출기로서는, 이정도의 크라스로되면 사이즈, 중량 모두 큰 것으로서, 접속작업을 하는맨호울안으로 가지고 들어가는 것은 불가능하다. 이상과 같이 여러가지로 검토한 끝에, 본 고안에 도달한 것이다.To avoid this, the injection speed can be increased to complete the mold before the material is cooled. For example, in order to apply to 154 KD and 275 KV class ultra-high-pressure crosslinked polyethylene insulated cables, it is necessary to ensure an injection rate of at least about 8 kg / hr. In such a relationship, it is preferable to use an extruder having a cylinder diameter of 40 mm or more in order to prevent the temperature rise of the resin and to obtain a sufficient extrusion speed. However, as a conventional screw type extruder, if it is about this class, the size and weight All of them are big, and it is impossible to bring them into the manhole to make a connection. After various studies as described above, the present invention has been reached.

다음에 본 고안에 대하여 설명한다. 제1도는 본 고안의 1실시예를 표시하며, 제2도에는 제1도의 실시예에 사용되는 압출기의 일부(본체)가 표시되어있다.Next, the present invention will be described. FIG. 1 shows an embodiment of the present invention, and FIG. 2 shows a part (main body) of an extruder used in the embodiment of FIG.

압출기는 압출기본체(1)와 유압유닛(2)으로 되어있고, 압출기 본체는(1)스 크루우(4)를 회전구동시키는 유압모우터(3)를 구비하고 있다. 유압유닛(2)은 유압모우터(3)를 작동시키는 기름을 가압, 순환시키는 유압펌프(5)와 기름탱크(6)와 기름 순환량을 제어하는 조정기(7)로서되고, 이 부분에서 가압된 기름은 압력호오스(8)를 통하여 유압모우터(3)에 송급되고, 압력호오스(8')에 의하여 기름탱크(6)에 돌아온다. 이때, 스크루우(4)의 회전수의 제어는 기름순환량의 제어에 의하여 되어진다. 도시되어있지 않으나, 접속부 주형에 사용되는 금형의 가열용, 압출기실린더 가열용의 전원선(5), 유압펌프(10)등 유압계통 제어용의 전선(10)은 압출기 본체(11)에 근접 배치되는 조작대(11)를 사이에 두고 접속되어 있다.The extruder consists of an extrusion main body 1 and a hydraulic unit 2, and the extruder main body is provided with a hydraulic motor 3 for rotating and driving the crew 4. The hydraulic unit 2 is a hydraulic pump 5 for pressurizing and circulating oil for operating the hydraulic motor 3, an oil tank 6 and a regulator 7 for controlling the amount of oil circulating. The oil is fed to the hydraulic motor 3 through the pressure hose 8 and returned to the oil tank 6 by the pressure hose 8 '. At this time, control of the rotation speed of the screw 4 is performed by control of the oil circulation amount. Although not shown, an electric wire 10 for controlling a hydraulic system, such as a power line 5 for heating a mold, an extruder cylinder heating, a hydraulic pump 10, etc., which is used to mold a connection part, is disposed close to the extruder main body 11. The operating table 11 is connected to each other.

실제로 사용할때에는, 유압유닛(2)을 맨호울 밖의 지상에 설치하고, 조작대와 압출기본체를 맨호울안으로 가지고 들어가서, 압출기에 의한 수지의 압출, 주형의 상태를 보면서 작업을 진행시킨다.In actual use, the hydraulic unit 2 is installed on the ground outside the manhole, the operating table and the extrusion main body are brought into the manhole, and the work is carried out while the resin is extruded by the extruder and the state of the mold is observed.

이 압출기를 사용하면, 실린더 직경 65mmø, L/D=20(단 L은 실린더길이, D는 실린더 내경) 크라스라도 압출기본체를 통상의 맨호울에서 반입시킬 수 있는 사이즈로 할수 있고, 중량도 100㎏ 정도로 경량화시킬 수 있어, 맨호울안에서의 작업성은 충분히 확보할 수 있다.With this extruder, a cylinder diameter of 65 mm ø and L / D = 20 (where L is the cylinder length and D is the inner diameter of the cylinder) can be made into a size such that the extruded main body can be carried in a normal manhole, and the weight is 100 kg. The weight can be reduced to such an extent that the workability in the manhole can be sufficiently secured.

압출기 본체의 실린더의 온도정에는 압출되는 수지의 발열을 억제하기 위하여, 히이터만이 아니고 냉각도 병용되는 것이 일반적이다. 냉각 방식으로서는, 통상 사용되는 팬에의한 공냉이라도 좋으나, 압출기 운전중에 온도가 상승하여, 작업환경을 악화시킬 염려가 있기 때문에, 재킷(jacket)을 설치하여, 물 또는 오일 순환에 의하여 냉각시키는 방식이 바람직하다. 또, 수냉, 유냉방식으로하면, 순환하는 물이나 기름을 냉각시키는 유닛은 유압유닛과 세트로하여서 조립하여, 지상에 놓을 수 있도록할 수가 있다. 본 고안에 의한 압출기의 효과를 알아보기 위하여, 램식의 압출기, 통상타입의 실린더 직경 32mmø의 압출기, 본 고안에 의한 실린더직경 65mmø의 압출기를 사용하고, 도체단면적 1000㎟, 절연층 20㎜의 가교폴리에틸렌절연케이블을 사용하여, 접속부 절연층으로서 가교제가들어 있는 폴리에틸렌을 30㎜ 두께의 주형으로하여 비교하였다.In order to suppress the heat generation of the resin extruded, it is common to use not only a heater but also cooling together at the temperature of the cylinder of an extruder main body. The cooling method may be air cooling by a fan which is usually used. However, since the temperature rises during the operation of the extruder, the work environment may be deteriorated. Thus, a jacket is installed and cooled by water or oil circulation. This is preferred. In the water-cooled or oil-cooled system, the unit for cooling the circulating water or oil can be assembled in a set with the hydraulic unit and placed on the ground. In order to examine the effect of the extruder according to the present invention, a cross-sectional polyethylene having a conductor cross-sectional area of 1000 mm 2 and an insulating layer of 20 mm was used, using a ram type extruder, an ordinary type cylinder extruder with a diameter of 32 mmø, and an extruder with a cylinder diameter of 65 mmø according to the present invention. Using an insulated cable, polyethylene having a crosslinking agent as a connection part insulating layer was compared as a mold having a thickness of 30 mm.

그 결과는 표 1에 표시된다.The results are shown in Table 1.

[표 1]TABLE 1

표 1에서 명백한 바와 같이, 본 고안의 실시예의 것과 대비하여서, 램식 압출기에 의한 것은, 그 폭, 높이, 길이, 중량의 어느점에서도 크며, 그 비율로보아서는 주입속도가 작고, 통상타입의 스크루우식 압출기에 의한 것에 있어서는, 이것 또한 높이, 중량의 점에서 크고, 그 비율로 보아서는 주입속도는 작으며, 실시예의 것이 맨호울안에서 사용하는데에는 보다 적절하다는 것을 표시하고 있다고 말할 수 있다.As is apparent from Table 1, in contrast to the embodiment of the present invention, the ram extruder is large in any of its width, height, length, and weight, and the ratio of the injection speed is small, and the screw of the normal type In the case of a caries extruder, this is also high in terms of height and weight, and it can be said that the injection speed is small in view of the ratio, and that the example is more suitable for use in the manhole.

이상 설명한 바와같이 본 고안에 의하면 고압 혹은 초고압전력케이블의 접속부의 절연을 틀림없이 정확하게 형성시킬 수가 있으며, 또 작업현장까지의 운반, 작업현장에 있어서의 설치도 용이하게 되어, 극히 작업성이 높은장치를 제공할 수가 있다.As described above, according to the present invention, the insulation of the connection portion of the high voltage or the ultra high voltage power cable can be surely formed accurately, and the transportation to the work site and the installation at the work site can be easily performed. Can be provided.

Claims (1)

스크루우식 압출기와 이것을 구동시키는 유압모우터로된 압출기 본체의 유압모우터와 상기 압출기본체와 분리된 유압유닛을 압력 호우스로 접속시켜서된 전력 케이블 접속용 수지 압출기.A resin extruder for connecting a power cable by connecting a hydraulic motor of an extruder main body comprising a screw extruder and a hydraulic motor for driving the same, and a hydraulic unit separated from the extruded main body with a pressure hose.
KR2019810002228U 1981-03-30 1981-03-30 Resin Extruder for Power Cable Connection KR830002711Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019810002228U KR830002711Y1 (en) 1981-03-30 1981-03-30 Resin Extruder for Power Cable Connection

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Application Number Priority Date Filing Date Title
KR2019810002228U KR830002711Y1 (en) 1981-03-30 1981-03-30 Resin Extruder for Power Cable Connection

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KR830000671U KR830000671U (en) 1983-08-03
KR830002711Y1 true KR830002711Y1 (en) 1983-12-08

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KR100434794B1 (en) * 2001-02-22 2004-06-07 최동열 Fabric for inkjet printing and process for producing the same

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