Cooling device suitable for thermoplastic insulated cable and cable production equipment

Abstract

The invention relates to a cooling device suitable for a thermoplastic insulated cable and cable production equipment. The cooling device suitable for the thermoplastic insulated cable comprises a plurality of first cooling assemblies, wherein the plurality of first cooling assemblies are sequentially arranged along the conveying direction of the cable; the first cooling assembly comprises a first base and a second base, wherein the first base is provided with a first cooling channel; the spraying unit is arranged on the first base, and the spraying unit is used for spraying cooling fluid into the first cooling channel; and the lifting unit is connected to the side, away from the first cooling channel, of the first base, and the lifting unit is used for driving the first base to ascend and descend relative to the adjacent first base. According to the cooling device suitable for the thermoplastic insulated cable, the height of the first base can be flexibly adjusted according to factors such as the cross section size and type of the cable, the cooling requirements of cables of different sizes and types are met, and the applicability and flexibility of the cooling device are improved.

Description

Technical Field

[0001] The present application relates to the technical field of cable manufacturing, and in particular to a cooling device and cable production equipment suitable for thermoplastic insulated cables. Background Art

[0002] At present, the insulation layer of the cable generally adopts a three-layer co-extrusion structure, and the main production methods are catenary and tower. The tower production line adopts vertical extrusion, which can control the insulation eccentricity within 5%, but the equipment cost of the tower is high and the production efficiency is low. It is generally only used in the production of high-voltage and ultra-high-voltage cables with small market demand and high technical requirements. In contrast, the catenary production line adopts a horizontal catenary distribution, with lower equipment cost, no need for too high a factory building, and can also control the insulation eccentricity of large-section cables to a certain extent, and is gradually widely used in cable production.

[0003] However, the catenary production lines in the industry usually adopt a fixed catenary design, and the catenary height cannot be adjusted according to the cross-sectional size of the cable, production speed and cooling requirements, which makes the production line less adaptable and unable to meet the production needs of cables of different sizes and types. Summary of the invention

[0004] Based on this, it is necessary to provide a cooling device and cable production equipment suitable for thermoplastic insulated cables to address the problem that the catenary production line cannot adjust the catenary height and the production line has poor adaptability.

[0005] A cooling device suitable for a thermoplastic insulated cable, the cooling device suitable for a thermoplastic insulated cable comprising a plurality of first cooling components, wherein the plurality of first cooling components are sequentially arranged along a conveying direction of the cable; the first cooling components comprising:

[0006] A first base is provided with a first cooling channel;

[0007] a spray unit, disposed on the first base, and configured to spray cooling fluid into the first cooling channel;

[0008] A lifting unit is connected to a side of the first base facing away from the first cooling channel, and the lifting unit is used to drive the first base to rise and fall relative to the adjacent first base.

[0009] In one embodiment, a plurality of the first bases are arranged in sequence along the conveying direction of the cable, the first base includes a first end and a second end arranged opposite to each other, and among any two adjacent first bases, the first end of one of the first bases is connected to the second end of the other first base, and the lifting unit is arranged at the first end.

[0010] In one embodiment, the lifting unit includes a lifting push member, a base, a telescopic member and a telescopic driving member. The lifting push member is connected to the side of the first base away from the first cooling channel and is located at the first end. The base and the lifting push member are arranged opposite to each other. The telescopic member is respectively connected to the lifting push member and the base at both ends in the telescopic direction. The telescopic driving member is connected to the telescopic member for driving the telescopic member to extend and retract, and driving the lifting push member to rise and fall relative to the base.

[0011] In one embodiment, the telescopic driving member includes a driving member, a moving member, a first sliding member and a second sliding member, the moving member is arranged on a side of the base facing the lifting pushing member and is connected to the output end of the driving member, the first sliding member is connected to the moving member and is slidably connected to the base, and the second sliding member is slidably connected to the lifting pushing member;

[0012] The end of the telescopic member close to the base includes a first link and a second link that are intersectingly arranged, one end of the first link is rotatably connected to the base, one end of the second link is rotatably connected to the first sliding member, and can move with the first sliding member; the end of the telescopic member close to the lifting and pushing member includes a third link and a fourth link that are intersectingly arranged, one end of the third link is rotatably connected to the lifting and pushing member, and the other end of the third link is rotatably connected to an end of the second link away from the base; one end of the fourth link is rotatably connected to the second sliding member and can move with the second sliding member, and the other end of the fourth link is rotatably connected to an end of the first link away from the base.

[0013] In one embodiment, the spray unit includes a delivery main pipe and a plurality of spray parts. The delivery main pipe is arranged on the outer wall of the first base, and is used to provide cooling fluid to the plurality of spray parts. The plurality of spray parts are respectively connected to the delivery main pipe and are arranged in sequence at intervals along the conveying direction of the cable. The spray parts are used to spray the cooling fluid in the delivery main pipe toward the first cooling channel.

[0014] In one embodiment, the spray component includes an adapter, a delivery branch pipe and a spray head, the adapter is connected to the delivery main pipe, the delivery branch pipe is connected to the adapter, the spray head is connected to the delivery branch pipe, and the spraying direction of the spray head points to the first cooling channel.

[0015] In one embodiment, a plurality of first support members are provided in the first cooling channel, and the plurality of first support members are arranged in sequence and spaced apart along the conveying direction of the cable; a curved surface matching the outer wall of the cable is provided on a side of the first support member away from the first base.

[0016] In one embodiment, the first support member is provided with a first through hole, in which a first rolling member rotatably connected to the first support member is embedded, and at least a portion of the first rolling member protrudes from a side of the first support member facing away from the first base.

[0017] In one embodiment, a plurality of the first cooling components are connected to form a lifting cooling mechanism; the cooling device suitable for thermoplastic insulated cables also includes a second cooling component, which is connected to one end of the lifting cooling mechanism, and is used to receive the cable output by the first cooling component and cool the cable; the second cooling component includes a second base and a water supply unit, the second base is connected to the first base, and is provided with a second cooling channel, the second cooling channel carries a cooling fluid, and the water supply unit is arranged on the second base, and is used to provide circulating cooling fluid to the second cooling channel.

[0018] A cable production device comprises an extrusion device and a cooling device suitable for thermoplastic insulated cables as described above, wherein the extrusion device is used to heat and extrude raw materials and output cables; the cooling device suitable for thermoplastic insulated cables is used to receive the cables output by the extrusion device and cool the cables.

[0019] The cooling device for thermoplastic insulated cables includes a plurality of first cooling components sequentially arranged along the conveying direction of the cables. Each first cooling component can flexibly adjust the height of the corresponding first base through a lifting unit, so that the plurality of first cooling channels for the cables to pass through can match the catenary shape of the cables, ensuring the uniformity of the cooling effect, thereby avoiding the problem of inconsistent thickness of the cable insulation layer due to uneven cooling, and thus preventing the problem of insulation eccentricity. At the same time, the cooling device for thermoplastic insulated cables provided by the present application can flexibly adjust the height of the first base according to factors such as the cross-sectional size, type, production speed and cooling requirements of the cables, ensuring that the cooling requirements of cables of different sizes and types can be met, thereby enhancing the applicability and flexibility of the cooling device for thermoplastic insulated cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a lifting and cooling mechanism in a cooling device for thermoplastic insulated cables provided in one embodiment of the present application.

[0021] Figure 2 A schematic structural diagram of a first cooling assembly in a cooling device for a thermoplastic insulated cable provided in one embodiment of the present application.

[0022] Figure 3A schematic structural diagram of a lifting unit in a cooling device for thermoplastic insulated cables provided in one embodiment of the present application.

[0023] Figure 4 A schematic diagram of a partial structure of a first cooling assembly in a cooling device for a thermoplastic insulated cable provided in an embodiment of the present application.

[0024] Figure 5 A schematic diagram showing a partial structure of a first cooling assembly in a cooling device for a thermoplastic insulated cable provided in an embodiment of the present application at another angle.

[0025] Figure 6 for Figure 5 A magnified schematic diagram of center A.

[0026] Figure 7 A schematic structural diagram of a second cooling assembly in a cooling device for a thermoplastic insulated cable provided in one embodiment of the present application.

[0027] Figure 8 for Figure 7 A magnified schematic diagram of point B in the middle.

[0028] Figure numerals: 100, lifting and cooling mechanism; 10, first cooling assembly; 11, first base; 111, first cooling channel; 112, third connecting member; 113, first protrusion; 12, spray unit; 121, main delivery pipe; 122, spray member; 1221, adapter; 1222, delivery branch pipe; 1223, spray head; 13, first connecting member; 14, second connecting member; 15, lifting unit; 151, lifting push member; 1511, second slide groove; 152, base; 1521, first slide groove; 153, telescopic member; 1531, first connecting rod; 1532, second connecting rod ; 1533, the third connecting rod; 1534, the fourth connecting rod; 154, the telescopic driving member; 1541, the moving member; 1542, the first sliding member; 1543, the second sliding member; 155, the fourth connecting member; 16, the first supporting unit; 161, the first supporting member; 1612, the first through hole; 163, the first rolling member; 20, the second cooling assembly; 21, the second base; 211, the second cooling channel; 212, the second protrusion; 22, the fifth connecting member; 23, the sixth connecting member; 24, the second supporting unit; 241, the second supporting member; 2412, the second through hole; 243, the second rolling member. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0031] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0035] The catenary height refers to the vertical distance from the horizontal position of the cable support point to the lowest point of the cable. The deadweight of the cable is related to the size of its cross section; the larger the cross section of the cable, the heavier its deadweight. When hanging, the cable sags more obviously due to gravity, and the catenary height is also higher. In addition, as the voltage level of the cable increases, the insulation layer of the cable needs to be thickened to meet the requirements of electrical insulation. The increased insulation layer increases the weight of the cable, which causes the cable to sag more obviously when hanging, and the catenary height is higher. Therefore, due to the different deadweights of cables of different sizes and types, the shape of the catenary is also different. For example, cables with larger cross sections, high voltage and ultra-high voltage cables generally sag more obviously and have higher catenary heights.

[0036] As mentioned in the background technology, the catenary production line in the industry currently usually adopts a fixed catenary design, so the catenary height cannot be adjusted according to the cross-sectional size of the cable, production speed and cooling requirements. However, when the cooling channel for the cable to pass through does not match the catenary of the cable, it may cause insufficient cooling in some areas, especially where the cable is under great pressure or bending. The heat in these areas is difficult to dissipate effectively, which can easily lead to overheating of the cable. In addition, if the shape of the cooling channel is not suitable, the cable may also be overstretched or squeezed, causing damage to the cable insulation layer and conductor, affecting the stability and reliability of the cable.

[0037] In order to solve the above problems, a cooling device for thermoplastic insulated cables provided in one embodiment of the present application includes a lifting cooling mechanism and a horizontal cooling mechanism, which are arranged in sequence along the conveying direction of the cable; wherein the lifting cooling mechanism can dynamically adjust the height so that its shape matches the catenary shape of the cable, thereby improving the cooling effect of the cooling device. The height of the horizontal cooling mechanism remains fixed and is kept at a certain horizontal position, and the horizontal cooling mechanism cooperates with the lifting cooling mechanism to help improve the cooling effect of the cooling device.

[0038] See also Figure 1 and Figure 2 , Figure 1 FIG. 1 is a schematic structural diagram of a lifting and cooling mechanism 100 in a cooling device for thermoplastic insulated cables according to an embodiment of the present application. Figure 2 A schematic diagram of the structure of the first cooling component 10 in a cooling device for thermoplastic insulated cables provided in an embodiment of the present application is shown. A lifting and cooling mechanism 100 for a cooling device for thermoplastic insulated cables provided in an embodiment of the present application includes a plurality of first cooling components 10, and the plurality of first cooling components 10 are arranged in sequence along the conveying direction of the cable. The first cooling component 10 includes a first base 11, a spray unit 12, and a lifting unit 15. The first base 11 is provided with a first cooling channel 111. The spray unit 12 is arranged on the first base 11, and is used to spray cooling fluid into the first cooling channel 111. The lifting unit 15 is connected to the side of the first base 11 away from the first cooling channel 111, and is used to drive the first base 11 to rise and fall relative to the adjacent first base 11.

[0039] It is understandable that the cooling device can independently adjust the height of the corresponding first base 11 using the lifting unit 15 according to factors such as the cross-sectional size of the cable or the type of the cable, so that the first cooling channels 111 of the multiple first bases 11 can be adapted to the catenary shape of different cables, ensuring the uniformity of the cooling effect and avoiding the problem of insulation eccentricity. The cooling device can meet the cooling needs of cables of different sizes and types, and has high applicability and flexibility.

[0040] In some embodiments, a plurality of first bases 11 are sequentially arranged along the conveying direction of the cable, a plurality of first cooling channels 111 are connected, and the cooling fluid in the first cooling channels 111 flows along the conveying direction of the cable. The first base 11 includes a first end and a second end arranged opposite to each other, and the first end of one of any two adjacent first bases 11 is connected to the second end of the other first base 11. The lifting unit 15 is arranged at the first end, and each first base 11 can be independently lifted and lowered according to actual needs, thereby achieving more precise adjustment and improving the cooling effect.

[0041] In some embodiments, a first connecting member 13 is provided at the first end of the first base 11, and a second connecting member 14 is provided at the second end of the first base 11. Among any two adjacent first bases 11, the first end of one first base 11 and the second end of the other first base 11 are detachably connected through the first connecting member 13 and the second connecting member 14, which is conducive to the rapid installation and disassembly of multiple first bases 11 and facilitates the daily maintenance and repair of the cooling device.

[0042] In some embodiments, please refer to Figure 3 , Figure 3 The schematic diagram of the structure of the lifting unit 15 in the cooling device for thermoplastic insulated cables according to one embodiment of the present application is shown. In some embodiments, the lifting unit 15 includes a lifting pusher 151, a base 152, a telescopic member 153 and a telescopic driving member 154. The lifting pusher 151 is connected to the side of the first base 11 away from the first cooling channel 111 and is located at the first end of the first base 11; the base 152 is arranged opposite to the lifting pusher 151; the telescopic member 153 is connected to the lifting pusher 151 and the base 152 at both ends of the telescopic direction; the telescopic driving member 154 is connected to the telescopic member 153, and is used to drive the telescopic member 153 to telescope, and drive the lifting pusher 151 to rise and fall relative to the base 152. The lifting pusher 151 is lifted and lowered relative to the base 152 under the drive of the telescopic member 153, so that the first base 11 can be lifted and lowered relative to the adjacent first base 11.

[0043] In some embodiments, the telescopic driving member 154 includes a driving member, a moving member 1541, a first sliding member 1542 and a second sliding member 1543. The moving member 1541 is disposed on the side of the base 152 facing the lifting push member 151 and is connected to the output end of the driving member. The first sliding member 1542 is connected to the moving member 1541 and is slidably connected to the base 152. The second sliding member 1543 is slidably connected to the lifting push member 151. The end of the telescopic member 153 close to the base 152 includes a first connecting rod 1531 and a second connecting rod 1532. The first connecting rod 1531 and the second connecting rod 1532 are arranged to intersect; one end of the first connecting rod 1531 is rotatably connected to the base 152, and one end of the second connecting rod 1532 is rotatably connected to the first sliding member 1542 and can move with the first sliding member 1542. The end of the telescopic member 153 close to the lifting pusher 151 includes a third link 1533 and a fourth link 1534, and the third link 1533 and the fourth link 1534 are arranged to intersect; one end of the third link 1533 is rotatably connected to the lifting pusher 151, and the other end of the third link 1533 is rotatably connected to the end of the second link 1532 away from the base 152; one end of the fourth link 1534 is rotatably connected to the second sliding member 1543 and can move with the second sliding member 1543, and the other end of the fourth link 1534 is rotatably connected to the end of the first link 1531 away from the base 152. The lifting unit 15 can realize the precise adjustment of the first base 11 in the lifting direction, and has a strong load capacity.

[0044] In some embodiments, the driving member is a motor, and the output shaft of the motor is connected to the moving member 1541, so that the moving member 1541 can drive the first sliding member 1542 to move relative to the base 152. In some embodiments, the side wall of the base 152 is provided with a first slide groove 1521, and the first sliding member 1542 is connected to the moving member 1541 and inserted into the first slide groove 1521; the side wall of the lifting push member 151 is provided with a second slide groove 1511, and the second sliding member 1543 is inserted into the second slide groove 1511.

[0045] In some embodiments, the surface of the lifting push member 151 facing the first base 11 is provided with an anti-slip texture, which can increase the contact friction between the lifting push member 151 and the first base 11, prevent the lifting push member 151 from sliding or slipping off during the lifting process, improve the stability of the lifting process, and improve the overall safety of use.

[0046] Please also read Figure 4 , Figure 4A schematic diagram showing a partial structure of a first cooling assembly 10 in a cooling device for thermoplastic insulated cables according to an embodiment of the present application is shown. In some embodiments, a third connector 112 is provided on a side of the first base 11 away from the first cooling channel 111, and the third connector 112 is located at a first end of the first base 11. The lifting unit 15 further includes a fourth connector 155, which is provided on a side of the lifting pusher 151 facing the first base 11 and is provided corresponding to the third connector 112, that is, the fourth connector 155 and the third connector 112 are matched in position, structure and matching mode, and the lifting pusher 151 and the first base 11 are detachably connected to the fourth connector 155 through the third connector 112, which is conducive to the rapid installation and removal of the lifting unit 15 and the first base 11, and is convenient for daily maintenance and repair of the cooling device.

[0047] In some embodiments, the spray unit 12 includes a delivery main pipe 121 and a plurality of spray components 122. The delivery main pipe 121 is disposed on the outer wall of the first base 11 for providing cooling fluid to the plurality of spray components 122. The plurality of spray components 122 are respectively connected to the delivery main pipe 121 and are arranged in sequence at intervals along the conveying direction of the cable. The spray components 122 are used to spray the cooling fluid in the delivery main pipe 121 toward the first cooling channel 111, so as to spray the cooling fluid toward the cable passing through the first cooling channel 111, thereby effectively taking away the heat on the surface of the cable and realizing a rapid reduction in the surface temperature of the cable.

[0048] In some embodiments, the first cooling assembly 10 includes two groups of spray units 12, which are respectively arranged on both sides of the first base 11, and are used to jointly spray cooling fluid into the first cooling channel 111 to achieve a more uniform cooling effect, ensure that the surface temperature of the cable can be uniformly and effectively reduced, and reduce the cooling blind area. At the same time, it can also take away the heat on the cable surface more quickly and improve the cooling efficiency.

[0049] In some embodiments, the delivery manifold 121 is connected to an external cooling fluid supply device (not shown), which is used to provide cooling fluid to the delivery manifold 121. The cooling fluid supply device includes a regulating mechanism, which is used to regulate the flow rate and pressure of the cooling fluid provided by the cooling fluid supply device to the delivery manifold 121, thereby achieving precise control of the cooling temperature and cooling speed.

[0050] In some embodiments, the spraying member 122 includes an adapter 1221, a delivery branch pipe 1222, and a spray head 1223. The adapter 1221 is connected to the delivery main pipe 121, the delivery branch pipe 1222 is connected to the adapter 1221, and the spray head 1223 is connected to the delivery branch pipe 1222. The spraying direction of the spray head 1223 points to the first cooling channel 111. The cooling fluid in the delivery main pipe 121 is sprayed toward the first cooling channel 111 through the adapter 1221, the delivery branch pipe 1222, and the spray head 1223.

[0051] In some embodiments, a valve is provided in the delivery branch 1222, and the valve is used to control the switch state of the delivery branch 1222 or the flow rate of the cooling fluid in the delivery branch 1222. By adjusting the valve, it is possible to achieve precise control of the cooling fluid, thereby controlling the cooling temperature and cooling speed. For example, the spray unit 12 of the first cooling assembly 10 close to one side of the extrusion device can provide more cooling fluid to the spray head 1223 by properly opening the valve in the delivery branch 1222, thereby meeting the higher cooling demand in this area.

[0052] Please also read Figure 5 and Figure 6 , Figure 5 FIG. 1 is a schematic diagram showing a partial structure of a first cooling assembly 10 in a cooling device for thermoplastic insulated cables provided in an embodiment of the present application at another angle. Figure 6 Shows Figure 5 In the enlarged schematic diagram at point A, in some embodiments, a plurality of first support units 16 are provided in the first base 11 , and the plurality of first support units 16 are sequentially spaced apart along the conveying direction of the cable for supporting the cable passing through the first base 11 .

[0053] In some embodiments, the first support unit 16 includes a first support member 161 and a plurality of first rolling members 163. The first support member 161 is disposed in the first cooling channel 111. The plurality of first support members 161 in the first cooling channel 111 are sequentially spaced along the conveying direction of the cable and are all rotatably connected to the first base 11. The first support member 161 is provided with an arc surface on the side away from the first base 11. The arc surface is adapted to the outer wall of the cable, which can ensure that the cable will not directly contact the inner wall of the first cooling channel 111 during the conveying process, reducing the friction between the cable and the inner wall of the first cooling channel 111, thereby effectively reducing the wear on the cable surface. The arc surface fits the outer wall of the cable, which can also ensure that the cable maintains stable operation during the conveying process, thereby improving the reliability of the conveying process. At the same time, it also helps the cooling fluid in the first cooling channel 111 to fully contact the cable, thereby improving the cooling effect.

[0054] In this embodiment, the first support member 161 is an arc-shaped piece, the side of the arc-shaped piece facing away from the first base 11 is adapted to the outer wall of the cable, and at least a part of the arc-shaped piece facing the first base 11 abuts against the inner wall of the first cooling channel 111.

[0055] In some embodiments, first mounting holes (not shown) are respectively provided at both ends of the first support member 161 near the first cooling channel 111, and a plurality of first protrusions 113 are correspondingly provided on the inner walls of both sides of the first cooling channel 111, and the first support member 161 and the first cooling channel 111 are connected by the first mounting holes and the first protrusions 113. During assembly, the first support member 161 can be installed by inserting the first protrusions 113 into the first mounting holes, which is convenient to operate.

[0056] In some embodiments, the first support member 161 is provided with a plurality of first through holes 1612, and the plurality of first through holes 1612 are sequentially spaced along the axial direction of the first support member 161; the first rolling member 163 is embedded in the first through hole 1612 and is rotatably connected to the first support member 161, and at least part of the first rolling member 163 protrudes from the side of the first support member 161 that is away from the first base 11. During the transportation process, the first rolling member 163 can convert the sliding friction between the cable and the first support member 161 into rolling friction, thereby effectively reducing the friction between the cable and the first support member 161, reducing wear, and avoiding scratches on the surface of the cable during transportation.

[0057] Please also read Figure 7 and Figure 8 , Figure 7 FIG. 1 shows a schematic structural diagram of a second cooling assembly 20 in a cooling device for a thermoplastic insulated cable provided in an embodiment of the present application. Figure 8 Shows Figure 7 In the enlarged schematic diagram at B, in some embodiments, the cooling device for thermoplastic insulated cables further includes a second cooling assembly 20, which is connected to one end of the lifting cooling mechanism 100 and is used to receive the cable output by the first cooling assembly 10 and cool the cable. The second cooling assembly 20 can be used as a horizontal cooling mechanism in the cooling device.

[0058] In some embodiments, the second cooling assembly 20 includes a second base 21 and a water supply unit (not shown). The second base 21 is connected to the first base 11 and is provided with a second cooling channel 211. The second cooling channel 211 carries a cooling fluid for water bath cooling of the cable. The water supply unit is arranged on the second base 21 to provide circulating cooling fluid to the second cooling channel 211. After the cable is sprayed and cooled by the first cooling assembly 10, it is uniformly cooled by water bath in the second cooling channel 211. At this time, the surface of the cable is solid, and the cable is immersed in the cooling fluid of the second cooling channel 211. The cooling fluid in the second cooling channel 211 can fully cool the inside of the cable. Such segmented cooling can better balance the temperature gradient on the surface and inside of the cable, help prevent deformation, expansion or contraction of the cable material due to excessive difference in temperature, and reduce mechanical stress caused by temperature changes.

[0059] In some embodiments, the second base 21 includes a third end and a fourth end that are arranged opposite to each other, and the third end of the second base 21 is connected to the second end of the adjacent first base 11. In some embodiments, a fifth connecting member 22 is provided at the third end of the second base 21, and a sixth connecting member 23 is provided at the fourth end of the second base 21; the second base 21 and the adjacent first base 11 are detachably connected through the second connecting member 14 and the fifth connecting member 22, which is conducive to the rapid installation and removal of the second base 21 and the first base 11, and is convenient for the daily maintenance and repair of the cooling device.

[0060] In some embodiments, a blocking member is disposed at the fourth end of the second base 21 to prevent the cooling fluid in the second base 21 from overflowing, so that the second cooling channel 211 is stably loaded with cooling fluid.

[0061] In some embodiments, a plurality of second support units 24 are disposed in the second base 21 . The plurality of second support units 24 are sequentially spaced apart along the conveying direction of the cable, and are used to support the cable passing through the second base 21 .

[0062] In some embodiments, the second support unit 24 includes a second support member 241 and a plurality of second rolling members 243. The second support member 241 is disposed in the second cooling channel 211. The plurality of second support members 241 in the second cooling channel 211 are sequentially arranged at intervals along the conveying direction of the cable and are all rotatably connected to the second base 21. The second support member 241 is provided with an arc surface on the side away from the second base 21. The arc surface is adapted to the outer wall of the cable, thereby reducing the friction between the cable and the inner wall of the second cooling channel 211 and effectively reducing the wear on the cable surface. In this embodiment, the second support member 241 is an arc sheet. The side of the arc sheet away from the second base 21 is adapted to the outer wall of the cable, and at least part of the arc sheet on the side of the arc sheet facing the second base 21 abuts against the inner wall of the second cooling channel 211.

[0063] In some embodiments, the second support member 241 is respectively provided with second mounting holes (not shown) at both ends close to the second cooling channel 211, and the inner walls on both sides of the second cooling channel 211 are correspondingly provided with a plurality of second protrusions 212. The second support member 241 and the second cooling channel 211 are snap-connected through the second mounting holes and the second protrusions 212, which facilitates the installation and disassembly of the second support member 241 and the second base 21.

[0064] In some embodiments, the second support member 241 is provided with a plurality of second through holes 2412, which are sequentially spaced along the axial direction of the second support member 241; the second rolling member 243 is embedded in the second through hole 2412 and is rotatably connected to the second support member 241, and at least part of the second rolling member 243 protrudes from the side of the second support member 241 that faces away from the second base 21. During the transportation process, the second rolling member 243 can effectively reduce the friction between the cable and the second support member 241, thereby preventing the cable from being damaged during the transportation process.

[0065] The cooling device for thermoplastic insulated cables provided by the present application can, on the one hand, flexibly adjust the height of the first base 11 according to factors such as the cross-sectional size, type, production speed and cooling requirements of the cable, ensuring that the cooling requirements of cables of different sizes and types can be met, and is suitable for cables of different sizes and types, thereby enhancing the applicability and flexibility of the cooling device. On the other hand, by adopting segmented cooling and cooling, the first cooling component 10 can quickly reduce the surface temperature of the cable, while the second cooling component 20 can fully cool the inside of the cable, the cooling efficiency of the cooling device is high, and the overall cooling effect is good.

[0066] An embodiment of the present application also provides a cable production device, which includes a first traction device, an extrusion device, a cooling device, a lifting device, and a second traction device, wherein the cooling device is a cooling device suitable for thermoplastic insulated cables as described above. The first traction device, the extrusion device, the cooling device, and the second traction device are arranged in sequence, the lifting and cooling mechanism 100 of the cooling device is arranged on the lifting device, and the horizontal cooling mechanism of the cooling device is fixedly arranged on the ground and arranged horizontally; the first traction device is used to pull the raw material from the upstream supply system to the extrusion device; the extrusion device is used to heat and extrude the raw material and output the cable; the cooling device is used to receive the cable output by the extrusion device and cool the cable; the lifting device is used to adjust the height position of the lifting and cooling mechanism 100; the second traction device is used to pull the cable after the cable passes through the cooling device and guide it into the subsequent processing link.

[0067] The cable production equipment provided by the present application performs preliminary height adjustment on the lifting and cooling mechanism 100 through the lifting device to ensure that the lifting and cooling mechanism 100 is located in a roughly suitable working position, and then finely adjusts the height of the corresponding first base 11 through the lifting unit 15 of the first cooling component 10, which is conducive to improving the accuracy of adjusting the lifting and lowering, so that the first cooling channels 111 of the multiple first bases 11 can be more compatible with the catenary shape of different cables, thereby improving the cooling effect. The above-mentioned cable production equipment can adapt to the production of cables of different sizes and types, and has high applicability and flexibility.

[0068] The cable production equipment provided by the present application can switch the production mode according to the actual production needs, and has high flexibility. For example, when producing large-section cables and high-voltage cables, the first cooling channels 111 of the multiple first bases 11 are raised to the height and angle required by the process by using a lifting device and a lifting unit 15, thereby ensuring the uniformity of the cooling effect, effectively suppressing insulation eccentricity, and improving production efficiency. When producing small-section cables, low-voltage cables, and cables using raw materials that are not prone to eccentricity as the insulation layer, the height of the first cooling channels 111 of the multiple first bases 11 is lowered by using a lifting device and a lifting unit 15, and even adjusted to a horizontal production line, which can speed up the output speed of the extrusion device, the speed of the first traction device and the second traction device, and is conducive to improving production efficiency.

[0069] During the production process, the first traction device pulls the raw material to the extrusion device to ensure stable material transportation and synchronize with the speed of the extrusion device. During this process, the extrusion device extrude the raw material and wrap the cable conductor, while adjusting the output speed according to the pulling force of the first traction device to avoid excessive stretching or uneven extrusion. Subsequently, the formed cable is cooled and solidified by the cooling device, and the cable tension during the cooling process is also consistent with the pulling force of the first traction device and the second traction device. The second traction device continues to pull the cable after it cools to keep it at a consistent tension.

[0070] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A cooling device suitable for thermoplastic insulated cables, characterized in that: The cooling device suitable for thermoplastic insulated cables comprises a plurality of first cooling components, which are arranged in sequence along the conveying direction of the cables; the first cooling components comprise: A first base is provided with a first cooling channel; a spray unit, disposed on the first base, and configured to spray cooling fluid into the first cooling channel; and, A lifting unit is connected to a side of the first base facing away from the first cooling channel, and the lifting unit is used to drive the first base to rise and fall relative to the adjacent first base.

2. The cooling device for thermoplastic insulated cables according to claim 1, characterized in that: Multiple first bases are arranged in sequence along the conveying direction of the cable, and the first base includes a first end and a second end that are arranged opposite to each other. Among any two adjacent first bases, the first end of one of the first bases is connected to the second end of the other first base, and the lifting unit is arranged at the first end.

3. The cooling device for thermoplastic insulated cables according to claim 2, characterized in that: The lifting unit includes a lifting push member, a base, a telescopic member and a telescopic driving member. The lifting push member is connected to a side of the first base away from the first cooling channel and is located at the first end. The base and the lifting push member are arranged opposite to each other. The two ends of the telescopic member in the telescopic direction are respectively connected to the lifting push member and the base. The telescopic driving member is connected to the telescopic member for driving the telescopic member to extend and retract, and driving the lifting push member to rise and fall relative to the base.

4. The cooling device for thermoplastic insulated cables according to claim 3, characterized in that: The telescopic driving member includes a driving member, a moving member, a first sliding member and a second sliding member, wherein the moving member is arranged on a side of the base facing the lifting pushing member and connected to the output end of the driving member, the first sliding member is connected to the moving member and is slidably connected to the base, and the second sliding member is slidably connected to the lifting pushing member; The end of the telescopic member close to the base includes a first link and a second link that are intersectingly arranged, one end of the first link is rotatably connected to the base, one end of the second link is rotatably connected to the first sliding member, and can move with the first sliding member; the end of the telescopic member close to the lifting and pushing member includes a third link and a fourth link that are intersectingly arranged, one end of the third link is rotatably connected to the lifting and pushing member, and the other end of the third link is rotatably connected to an end of the second link away from the base; one end of the fourth link is rotatably connected to the second sliding member and can move with the second sliding member, and the other end of the fourth link is rotatably connected to an end of the first link away from the base.

5. The cooling device for thermoplastic insulated cables according to claim 1, characterized in that: The spray unit includes a delivery main pipe and a plurality of spray parts. The delivery main pipe is arranged on the outer wall of the first base and is used to provide cooling fluid to the plurality of spray parts. The plurality of spray parts are respectively connected to the delivery main pipe and are arranged in sequence at intervals along the conveying direction of the cable. The spray parts are used to spray the cooling fluid in the delivery main pipe toward the first cooling channel.

6. The cooling device for thermoplastic insulated cables according to claim 5, characterized in that: The spray component includes an adapter, a delivery branch pipe and a spray head. The adapter is connected to the delivery main pipe, the delivery branch pipe is connected to the adapter, the spray head is connected to the delivery branch pipe, and the spray direction of the spray head points to the first cooling channel.

7. The cooling device for thermoplastic insulated cables according to claim 1, characterized in that: A plurality of first support members are arranged in the first cooling channel and are arranged in sequence and spaced apart along the conveying direction of the cable; a curved surface matching the outer wall of the cable is arranged on a side of the first support member away from the first base.

8. The cooling device for thermoplastic insulated cables according to claim 7, characterized in that: The first support member is provided with a first through hole, in which a first rolling member rotatably connected to the first support member is embedded, and at least a portion of the first rolling member protrudes from a side of the first support member facing away from the first base.

9. The cooling device for thermoplastic insulated cables according to claim 1, characterized in that: A plurality of the first cooling components are connected to form a lifting cooling mechanism; the cooling device suitable for thermoplastic insulated cables also includes a second cooling component, which is connected to one end of the lifting cooling mechanism, and is used to receive the cable output by the first cooling component and cool the cable; the second cooling component includes a second base and a water supply unit, the second base is connected to the first base, and is provided with a second cooling channel, the second cooling channel carries a cooling fluid, and the water supply unit is arranged on the second base, and is used to provide circulating cooling fluid to the second cooling channel.

10. A cable production equipment, characterized in that: It comprises an extrusion device and a cooling device suitable for thermoplastic insulated cables as described in any one of claims 1 to 9, wherein the extrusion device is used to heat and extrude the raw materials and output the cables; the cooling device suitable for thermoplastic insulated cables is used to receive the cables output by the extrusion device and cool the cables.

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