WO2020139139A1 - Cable conduit having an asymmetrical end piece - Google Patents
Cable conduit having an asymmetrical end piece Download PDFInfo
- Publication number
- WO2020139139A1 WO2020139139A1 PCT/RU2019/000873 RU2019000873W WO2020139139A1 WO 2020139139 A1 WO2020139139 A1 WO 2020139139A1 RU 2019000873 W RU2019000873 W RU 2019000873W WO 2020139139 A1 WO2020139139 A1 WO 2020139139A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cable
- neck
- housing
- conduit
- funnel
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
Definitions
- the invention relates to electrical products, in particular, to tubular conduits used to place cable along cable routes, mainly on underground routes.
- conduits having a tubular body are widely used, in the interior of which a cable is placed.
- the tubular conduit body can be made in the form of a single pipe or in the form of several pipes joined to each other.
- the conduit under consideration has a rigid tubular casing made of polyethylene with a through longitudinal channel (cable - channel) designed to accommodate a power cable (6 - 500 kV) equipped with an external polymer sheath.
- the specified polymer conduit which has rigidity and resistance to environmental factors, protects the cable from mechanical damage and external influences, which helps to increase its reliability.
- conduit designs which provide tools to simplify the process of institution and laying the cable in the cable channel.
- conduit is known, described in [Guidelines for the laying, installation and commissioning of fiber - optic communication lines. M..1987], selected as the closest analogue.
- the conduit in question has a rigid tubular body made of thermoplastic plastic with a through longitudinal channel for drawing and placing the fiber cable.
- the housing is equipped with located at its end section, a funnel-shaped guide tip containing a neck connected to the housing and an expanding outer part having the shape of a body of revolution symmetrical with respect to the longitudinal axis of the neck.
- the diameter of the inner surface of the neck corresponds to the diameter of the inner surface of the tubular body and is selected from the placement of the neck inside the cable channel tight fit.
- the process of inserting the cable into the cable channel and the process of removing the cable end portion from the cable channel at the end of the cable route is simplified.
- the sharp edge of the end portion of the housing on the cable is excluded, which could cause difficulty in pulling the cable and even lead to mechanical damage to the cable.
- this extender does not cause difficulties in the case of laying a cable route containing a single conduit.
- the basis of the claimed invention is the task of simplifying the process of laying a cable route for a bundle of cables laid in separate conduits.
- the expanding part of the funnel-shaped tip has a shape that is not symmetrical with respect to the longitudinal axis of the neck, such that in the plane of the cross section the axis of the neck is closer to one of the sections of the side surface of the expanding part of the funnel-shaped tip.
- the cable Due to the presence of a tubular body with a through longitudinal channel for pulling and placing the cable, the cable is protected from mechanical damage and external influences, which helps to increase the reliability of its operation.
- the tubular conduit body can be made in the form of a single pipe or in the form of several pipes joined to each other.
- a material having rigidity can be used, in particular, a metal material, a polymeric material, a composite material.
- the guide tip described above acting as an end expander, at the end portion of the housing, the process of inserting the cable into the cable channel and the process of removing the end portion of the cable from the cable channel at the end of the cable route are simplified.
- the sharp edge of the end portion of the housing on the cable is excluded, which could cause difficulty when pulling the cable by catching it on the sharp edges of the specified edge, and also lead to mechanical cable damage.
- the specified tip can be located at one end of the conduit housing or at both ends.
- the funnel-shaped tip under consideration is made asymmetric, its neck is shifted closer to one of the sections of the lateral surface of its expanding outer part. This allows you to lay the lugs of the individual conduits used for this purpose when laying the path for the cable bundle so that the parts of the side surfaces of their expanding parts closest to the neck turn out to be close to each other or even adjacent to each other, which leads to a decrease in the distance between the ends of the lugs and , respectively, between the tubular bodies of these individual conduits.
- the walls of the expanding part of the funnel-shaped tip in question in the plane of the cross section may, in particular, have a curved shape (for example, an annular shape, a sectoral shape in which these walls have the shape of a circular sector) or a polygon shape (for example, a trapezoid, a triangle).
- a curved shape for example, an annular shape, a sectoral shape in which these walls have the shape of a circular sector
- a polygon shape for example, a trapezoid, a triangle
- a material for the manufacture of the tip can be, in particular, used a metal, polymer, composite material.
- connection of the tip with the housing can be carried out, in particular, by butt welding or by means of a coupling.
- Figure 1 presents a General view of the inventive device (section in the longitudinal plane of the cross section);
- figure 2 is the same (section in the transverse plane of the section);
- Fig.3 presents a General view of the cable route using the three claimed devices (section in the transverse plane of the cross section of the end sections of the conduit lugs);
- figure 5 presents a General view of the cable route using the three claimed devices with lugs having in the transverse plane of the cross-sectional sector shape (section in the transverse plane of the cross-section of the end sections of the conduit lugs);
- the conduit comprises a tubular housing 1 with a through longitudinal channel 2. At the end of the housing 1 there is a funnel-shaped tip including a neck 3 and an outer expanding part 4.
- the neck 3 is connected to the housing 1, in particular by means of a coupling 5.
- the longitudinal axis of the neck coincides with the longitudinal axis O - O 'of the housing 1 (in FIG. Zi 5, the axis O - O' is indicated for one of the conduits).
- the diameters of the inner surface of the neck 3 and the inner surface of the housing 1 are chosen equal in magnitude.
- the expanding part 4 of the funnel-shaped tip has a shape that is not symmetrical about the longitudinal axis O - O 'of the neck 3, such that in the plane of the cross section, the axis O - O' of the neck 3 is located closer to one of the sections of the side surface of the expanding part 4 of the tip.
- Fig.1 and Fig.2 presents a view of the conduit, in which the expanding part 4 in the plane of the cross section has the shape of a ring, the axis a - a of which is shifted upward relative to the axis O - O 'of the neck 3, while the neck 3 is located closer to the lower portion of the side surface of the expanding part 4 (adjacent to the specified portion of the side surface).
- Figs. 3 and 4 show a view of three conduits with funnel-shaped lugs having the shape described above. Moreover, as can be seen from figure 4, the necks 3 of the adjacent conduits are close to each other (adjacent to each other), thereby minimizing the distances S between them and, accordingly, between the cases 1 of these conduits.
- FIG. 5 and 6 show a view of three conduits with funnel-shaped tips having a sector shape, in which the neck 3 is shifted to a pointed portion of the side surface of the expanding part 4. Moreover, as can be seen from FIG. 6, the necks 3 of the adjacent conduits are close to each other, thereby reducing the distances S between them and, accordingly, between the cases 1 of these conduits, to which their end sections are to be routed.
- the device operates as follows.
- the work of the inventive conduit will consider the example of the use of three separate conduits, each of which is designed to install one of the three cables laid by the bundle.
- An underground cable route is laid, in particular, using the method of horizontal directional drilling, during which three conduits are pulled into the ground. At both ends of each conduit, a guide funnel tip of the asymmetric shape described above is installed. Then, one of the cables (not shown) is drawn into each conduit.
- Conduit lugs have a guiding and protective function. With their help, the process of inserting the cable into the cable is facilitated - the channel of the housing 1 of each conduit and the process of bringing the cable out. It is advisable from the point of view of convenience of carrying out the corresponding manipulations to bring the end of the cable out through the portion of the side surface of the extension part 4 of the tip, which is located at a greater distance from the neck 3.
- the conduits are close to each other, which ensures that there is no need to separate the end sections of the conduits to a considerable distance and thereby simplifies the process of laying the cable route.
- the invention can be used in industries where cable lines are used, such as electric power, housing and communal services, in the oil and gas and chemical industries, and is intended for cable placement along cable routes, mainly on underground routes.
- the claimed invention allows to reduce labor costs associated with the need to dilute the end sections of the conduit to a considerable distance from each other, which is difficult due to the rigidity of the conduit bodies and ground pressure. As a result, when using the claimed invention, a simplification of the process of laying a cable route for a cable bundle is achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2018147022 | 2018-12-26 | ||
RU2018147022 | 2018-12-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020139139A1 true WO2020139139A1 (en) | 2020-07-02 |
Family
ID=71129859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/RU2019/000873 WO2020139139A1 (en) | 2018-12-26 | 2019-12-02 | Cable conduit having an asymmetrical end piece |
Country Status (1)
Country | Link |
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WO (1) | WO2020139139A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0197112A (en) * | 1987-10-05 | 1989-04-14 | Kansai Electric Power Co Inc:The | Inspection of cable entry hole |
JPH0232710A (en) * | 1988-07-19 | 1990-02-02 | Akiyuki Shima | Guide for end of lead wire |
RU2128389C1 (en) * | 1992-06-13 | 1999-03-27 | Дипл. Инж.др.Эрнст Фогельзанг ГмбХ унд Ко.КГ. | Cable drawing device with at least one thermoplastic cable-duct tube and method for drawing cables into cable-duct tubes |
RU2013112651A (en) * | 2013-03-21 | 2014-09-27 | Закрытое Акционерное Общество "Связьстройдеталь" | OPTICAL CLUTCH CABLE INPUT AND METHOD FOR USING CABLE INPUT |
-
2019
- 2019-12-02 WO PCT/RU2019/000873 patent/WO2020139139A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0197112A (en) * | 1987-10-05 | 1989-04-14 | Kansai Electric Power Co Inc:The | Inspection of cable entry hole |
JPH0232710A (en) * | 1988-07-19 | 1990-02-02 | Akiyuki Shima | Guide for end of lead wire |
RU2128389C1 (en) * | 1992-06-13 | 1999-03-27 | Дипл. Инж.др.Эрнст Фогельзанг ГмбХ унд Ко.КГ. | Cable drawing device with at least one thermoplastic cable-duct tube and method for drawing cables into cable-duct tubes |
RU2013112651A (en) * | 2013-03-21 | 2014-09-27 | Закрытое Акционерное Общество "Связьстройдеталь" | OPTICAL CLUTCH CABLE INPUT AND METHOD FOR USING CABLE INPUT |
Non-Patent Citations (1)
Title |
---|
RUKOVODSTVO PO PROKLADKE, MONTAZHU I SDACHE V EKSPLUATATSIIU VOLOKONNO- OPTICHESKIKH LINII SVIAZI. M..1987 G., Retrieved from the Internet <URL:http://www.gosthelp.ru/text/Rukovpdstvopoprokladkcmon.html> [retrieved on 20200220] * |
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