A vacuum air extraction device for a submarine cable sheath

Abstract

The application discloses a kind of vacuum air exhaust devices of submarine cable sheath, including cover, air pipe, exhaust fan and control machine box, the cover is closed to the line body entrance of extruder and is equipped with several jack that can be inserted into the shell inner cavity and then enter the line body entrance, one end of the air pipe is connected with the shell inner cavity of cover and the other end is installed at the air exhaust port of exhaust fan, the control machine box is electrically connected with exhaust fan.The application is closed to the line body entrance of extruder by setting the cover with several jack that can be inserted into the shell inner cavity and then enter the line body entrance, and then cooperate with air pipe to connect exhaust fan, can form vacuum environment, effectively remove the air between core wire and sheath, greatly improve the connection tightness of core wire and sheath, very suitable for the processing use of submarine cable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable, in particular to the technical field of a vacuum air extraction device for submarine cable sheath.

BACKGROUND

[0002] Cable is a cable for transmitting and distributing electric energy, which is often used in urban underground power grid, power station outgoing line, internal power supply of industrial and mining enterprises and underwater power transmission line across rivers and seas. The sheath 8 is the outermost layer of the cable, and the production method is usually as shown in the figure. Among them, a plurality of core wires 7 pass through the flow guide sleeve 64, the inner mold core 65 and the mold cover 67 of the extruder 6 in turn and move at a uniform speed according to the process specified speed, while the glue in the sleeve 61 is driven by the screw 63 to flow along the gap between the outer shell 62, the outer mold core 66, the flow guide sleeve 64 and the inner mold core 65, and finally extends, adheres and solidifies outside the core wire 7 to form the sheath 8. Figure 1

[0003] However, the gap between the existing core wire 7 and the sheath 8 is large, which is easy to mix air, and further causes the cable to be oxidized. In addition, the cable is easy to be repeatedly bent in actual use, which further aggravates the peeling phenomenon between the core wire 7 and the sheath 8, affects the normal use of the cable, especially in the submarine use environment.

SUMMARY

[0004] The purpose of the present application is to solve the problems in the prior art, and to provide a vacuum air extraction device for submarine cable sheath, which can effectively remove the air between the core wire and the sheath, greatly improve the connection tightness of the core wire and the sheath, and is very suitable for the processing and use of submarine cable.

[0005] In order to achieve the above purpose, the present application provides a vacuum air extraction device for submarine cable sheath, which comprises a cover, a wind pipe, an air extractor and a control cabinet, the cover is closed to the line body inlet of the extruder and is provided with a plurality of insertion holes for the core wire to extend into the inner cavity of the shell and then enter the line body inlet, one end of the wind pipe is connected with the inner cavity of the shell of the cover and the other end is installed at the air extraction port of the air extractor, and the control cabinet is electrically connected with the air extractor.

[0006] As a preferred, the inner wall of each insertion hole is respectively provided with a first sealing ring.

[0007] ​As preferred, the shunt assembly further comprises a shunt cylinder, an air pipe, a liquid pipe, a screen and a glue absorbing cotton block, the top wall of the shunt cylinder extends downward to form a partition plate, the screen is installed between the cylinder wall of the shunt cylinder and the partition plate and separates the inner cavity of the shunt cylinder into an air cavity and a liquid cavity, the screen can block glue liquid and only allow gas to pass through, one end of the air pipe is located in the air cavity and the other end extends into the inner cavity of the shell, one end of the liquid pipe is located in the liquid cavity and the other end extends into the inner cavity of the shell and is connected with the glue absorbing cotton block, the glue absorbing cotton block is installed in the inner mold core of the extruding machine, and one end of the air pipe is connected with the air cavity.

[0008] As preferred, the inner wall of the through hole, through which the air pipe and the liquid pipe extend, of the shunt cylinder is provided with a second sealing ring.

[0009] As preferred, the screen is detachably installed between the cylinder wall of the shunt cylinder and the partition plate, the cylinder wall of the shunt cylinder is provided with an opening, and the opening is provided with a door.

[0010] As preferred, the glue absorbing cotton block comprises a support plate and a cotton block body, the cotton block body is fixed to one side of the support plate, one end of the liquid pipe passes through the support plate from the other side and extends into the cotton block body, and the support plate and the cotton block body are provided with a plurality of wire body channels which are mutually penetrated and can allow the core wire to pass through.

[0011] As preferred, the support plate is further provided with a heating resistor, and the control box is electrically connected with the glue absorbing cotton block.

[0012] As preferred, the side edge of the support plate, to which the cotton block body is installed, is provided with a side wing, and the support plate and the side wing are made of heat-conducting material.

[0013] The present application has the following advantages: the shell with a plurality of jacks for allowing the core wire to extend into the inner cavity of the shell and then enter the wire body inlet is arranged to close the wire body inlet of the extruding machine, and the air pipe is connected with the air extractor, so that a vacuum environment is formed, the air between the core wire and the sheath is effectively removed, the connection tightness of the core wire and the sheath is greatly improved, and the present application is very suitable for the processing of submarine cables; the shunt cylinder, the air pipe, the liquid pipe, the screen and the glue absorbing cotton block are arranged to form the shunt cylinder and are connected with the shell and the air pipe, so that the vacuum extraction of the shell is not affected, the glue liquid which is mistakenly entered into the inner mold core due to the negative pressure is sucked away, and the surface of the core wire is wiped, and the quality of the cable is further improved; the support plate and the cotton block body are arranged to form the glue absorbing cotton block, the heating resistor is arranged in the support plate, and the side wing which wraps the glue absorbing cotton block is arranged at the edge of the support plate, so that the glue liquid is effectively prevented from solidifying and forming glue particles.

[0014] The features and advantages of the present application will be described in detail with reference to the embodiments and the accompanying drawings.

DRAWINGS

[0015] Figure 1 is a structural schematic diagram of a sheath prepared by an extruder in the prior art;

[0016] Figure 2 is a front view of a vacuum air extraction device for a submarine cable sheath installed on an extruder according to the present application;

[0017] Figure 3 is an assembly schematic diagram of a cover and a shunt assembly of a vacuum air extraction device for a submarine cable sheath according to the present application;

[0018] Figure 4 is a structural schematic diagram of a cover and a shunt assembly of a vacuum air extraction device for a submarine cable sheath installed on an extruder according to the present application.

[0019] In the figure: 1-cover, 2-air pipe, 3-extraction fan, 4-control cabinet, 5-shunt assembly, 51-shunt cylinder, 511-baffle, 512-air cavity, 513-liquid cavity, 514-door, 52-air pipe, 53-liquid pipe, 54-separation net, 55-glue absorbing cotton block, 551-supporting plate, 5511-side wing, 552-cotton block body, 6-extruder, 61-material sheath, 62-outer shell, 63-screw, 64-flow guide sleeve, 65-inner mold core, 66-outer mold core, 67-mold cover, 7-core wire, 8-sheath.

DETAILED DESCRIPTION

[0020] Referring to Figure 2 , Figure 3 and Figure 4 , the vacuum air extraction device for a submarine cable sheath according to the present application comprises a cover 1, an air pipe 2, an extraction fan 3 and a control cabinet 4, the cover 1 encloses a wire body inlet of an extruder 6 and is provided with a plurality of insertion holes through which core wires 7 can extend into the inner cavity of the cover and then enter the wire body inlet, one end of the air pipe 2 is connected to the inner cavity of the cover 1 and the other end is installed at the air extraction port of the extraction fan 3, and the control cabinet 4 is electrically connected to the extraction fan 3.

[0021] A first sealing ring is arranged at the inner wall of each insertion hole.

[0022] Further comprising a shunt assembly 5, the shunt assembly 5 comprises a shunt cylinder 51, an air pipe 52, a liquid pipe 53, a screen 54 and a glue absorbing cotton block 55, the top wall of the cylinder body of the shunt cylinder 51 extends downward to form a partition plate 511, the screen 54 is installed between the cylinder wall of the shunt cylinder 51 and the partition plate 511 and separates the inner cavity of the cylinder body of the shunt cylinder 51 to form an air cavity 512 and a liquid cavity 513, the screen 54 can block glue liquid and only allow gas to pass through, one end of the air pipe 52 is located in the air cavity 512 and the other end extends into the inner cavity of the shell, one end of the liquid pipe 53 is located in the liquid cavity 513 and the other end extends into the inner cavity of the shell and is connected with the glue absorbing cotton block 55, the glue absorbing cotton block 55 is installed in the inner mold core 66 of the extruding machine 6, and one end of the air pipe 52 is connected with the air cavity 512.

[0023] The inner wall of the through hole, in which the air pipe 52 and the liquid pipe 53 extend, of the shunt cylinder 51 is provided with a second sealing ring.

[0024] The screen 54 is detachably installed between the cylinder wall of the shunt cylinder 51 and the partition plate 511, the cylinder wall of the shunt cylinder 51 is provided with an opening, and the opening is provided with a sealing door 514.

[0025] The glue absorbing cotton block 55 comprises a support plate 551 and a cotton block body 552, the cotton block body 552 is fixed to one side of the support plate 551, one end of the liquid pipe 53 passes through the support plate 551 from the other side and extends into the cotton block body 552, and the support plate 551 and the cotton block body 552 are provided with a plurality of wire body channels which are mutually penetrated and can allow the core wire 7 to pass through.

[0026] The support plate 551 is further provided with a heating resistor, and the control box 4 is electrically connected with the glue absorbing cotton block 55.

[0027] One side edge of the support plate 551, on which the cotton block body 552 is installed, is provided with a side wing 5511, and the support plate 551 and the side wing 5511 are both made of heat conductive material.

[0028] The working process of the present application is as follows:

[0029] In the working process, the air in the inner cavity of the shell of the cover shell 1 is first sucked into the air cavity of the shunt cylinder 51 along the air pipe 52 and then is sucked out along the air pipe 2, so as to reduce the air between the core wire 7 and the sheath 8.

[0030] In addition, due to the suction of the air extractor 3, a vacuum environment is formed in the inner cavity of the shell of the shell 1, so that part of the glue flows into the inner mold core 65, and after solidification, the glue particles gradually adhere to the surface of the core wire 7 entering the extruder 6 subsequently, affecting the close connection of the core wire 7 and the sheath 8. Therefore, the application further provides the glue absorbing cotton block 55 in the inner mold core 65, which can absorb the glue liquid that enters the inner mold core 65 by mistake under the influence of air pressure, and can also wipe the moving core wire 7. Moreover, the glue liquid stored in the cotton block body 552 will also gradually flow into the liquid cavity of the shunt cylinder 51 along the liquid pipe 53 under the action of negative pressure. At the same time, the heating effect of the heating resistor can also prevent the glue liquid from solidifying into glue particles.

[0031] The application can form a vacuum environment by setting the shell with several jacks for the core wire to extend into the inner cavity of the shell and then enter the wire body inlet, cooperating with the air pipe connected to the air extractor, effectively removing the air between the core wire and the sheath, greatly improving the connection tightness of the core wire and the sheath, and being very suitable for the processing of submarine cables; by setting the shunt cylinder, air pipe, liquid pipe, screen and glue absorbing cotton block, the shunt cylinder is connected to the shell and the air pipe, which does not affect the vacuum extraction of the shell, and can also suck the glue liquid that enters the inner mold core by mistake under the influence of negative pressure and wipe the surface of the core wire, further improving the quality of the cable; by setting the support plate and the cotton block body to form the glue absorbing cotton block, setting the heating resistor in the support plate, and setting the side wing wrapping the glue absorbing cotton block on the edge of the support plate, the glue liquid can be effectively prevented from solidifying and forming glue particles.

[0032] The above embodiments are descriptions of the application, not limitations of the application, and any simple transformation of the application belongs to the protection scope of the application.

Claims

1. A subsea cable jacket vacuum de-airing apparatus, characterized by: The utility model relates to a kind of glue suction devices, including cover (1), air pipe (2), exhaust fan (3) and control cabinet (4), the cover (1) enclosed the line body entrance of extruder (6) and is equipped with several jack for core wire (7) to extend into the inner chamber of shell and then enter the line body entrance, one end of the air pipe (2) is connected with the inner chamber of shell of cover (1) while the other end is installed at the air exhaust port of exhaust fan (3), the control cabinet (4) is electrically connected with exhaust fan (3), further including shunt component (5), the shunt component (5) includes shunt cylinder (51), air pipe (52), liquid pipe (53), screen (54) and glue absorption cotton block (55), the top wall of the cylinder body of shunt cylinder (51) extends downward to form baffle (511), the screen (54) is installed between the cylinder wall of shunt cylinder (51) and baffle (511) and separates the inner chamber of cylinder of shunt cylinder (51) to form gas cavity (512) and liquid cavity (513), the screen (54) can block glue liquid and only allow gas to pass through, one end of the air pipe (52) is located in gas cavity (512) while the other end extends into the inner chamber of shell, one end of the liquid pipe (53) is located in liquid cavity (513) while the other end extends into the inner chamber of shell and is connected with glue absorption cotton block (55), the glue absorption cotton block (55) is installed in the inner mold core (66) of extruder (6), one end of the air pipe (2) is connected with gas cavity (512).

2. An apparatus for vacuum de-airing a jacket for a submarine cable as claimed in claim 1, characterised in that: The inner wall of each jack hole is provided with a first sealing ring.

3. An apparatus for vacuum de-airing a jacket for a submarine cable as defined in claim 1, wherein: The inner wall of the through hole, where the air pipe (52) and the liquid pipe (53) extend into the shunt cylinder (51), is provided with a second sealing ring.

4. An apparatus for vacuum de-airing a jacket for a submarine cable as defined in claim 1, wherein: The screen (54) is detachably installed between the cylinder wall of the shunt cylinder (51) and the baffle (511), the cylinder wall of the shunt cylinder (51) is provided with an opening, and the opening is provided with a door (514).

5. An apparatus for vacuum de-airing a jacket for a submarine cable as defined in claim 1, wherein: The glue absorption cotton block (55) includes a support plate (551) and a cotton block body (552), the cotton block body (552) is fixed to one side of the support plate (551), one end of the liquid pipe (53) passes through the support plate (551) from the other side and extends into the cotton block body (552), and the support plate (551) and the cotton block body (552) are provided with a plurality of thread channels that penetrate each other and allow the core wire (7) to pass through.

6. An apparatus for vacuum de-airing a jacket for a submarine cable as claimed in claim 5, characterised in that: The support plate (551) is further provided with a heating resistor, and the control cabinet (4) is electrically connected with the glue absorption cotton block (55).

7. An apparatus for vacuum de-airing a jacket for a submarine cable as claimed in claim 6, characterised in that: The side edge of the support plate (551) where the cotton block body (552) is installed is provided with a side wing (5511), and the support plate (551) and the side wing (5511) are made of heat-conducting material.

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