Armored cable and armored cable packaging device

Abstract

An armored cable, relating to the technical field of armored cables. The armored cable comprises cable cores (1), wherein the outside of the cable cores (1) is sequentially wrapped with a segmented resin plugging layer (2), an inner insulating layer (3), an armor layer (4) and an outer insulating layer (5); and the armored cable is divided into a resin plugging segment and a non-resin plugging segment. The segmented resin plugging layer (2) ensures that the cable cores (1) in the resin plugging segment are completely isolated from air, resin comes into full contact with the cable cores (1) and the inner insulating layer (3), and the cable cores (1) can effectively block gas exchange inside the cable by means of the segmented resin plugging layer, such that the air circulation in small gaps inside the cable is poor, which greatly reduces damage to the entire cable caused by local cable damage; in addition, the cable in the non-resin plugging segment allows the entire cable to still have a great heat dissipation performance, thereby prolonging the service life of the armored cable.

Description

Armored cable and armored cable packaging equipment Technical Field

[0001] The present invention belongs to the technical field of armored cables, and in particular relates to an armored cable and an armored cable packaging device. Background Art

[0002] The use of cables can be seen everywhere in daily life, and armored cables play an irreplaceable role in various high-power power transmissions and various harsh environments. The diameter of armored cables is generally thicker and the cost is extremely expensive. At present, armored cables are usually composed of multiple cable cores wrapped around each other to form a thicker cable. There will be small gaps on the contact surface of the cable cores, and air will circulate in the gaps. Armored cables generally carry larger voltages and currents and carry larger powers. The conductive core of the cable contacts the air, causing air ionization, which can easily damage the cable core and insulation structure. Moreover, when the local cable is damaged or when the cable is installed, the entire cable will be affected by the air entering the damaged area, causing air circulation, which shortens the service life of the cable and causes immeasurable economic losses. It also poses a considerable hidden danger to personnel safety. Summary of the Invention

[0003] In view of the above problems, the object of the present invention is to provide an armored cable that greatly reduces the damage caused by local cable damage to the entire cable, while allowing the cable to have the advantage of heat dissipation performance.

[0004] To achieve the above objectives, the present invention provides the following technical solutions: an armored cable, comprising a cable core, wherein the outer surface of the cable core is sequentially wrapped with an inner insulation layer, an armor layer, and an outer insulation layer, and the outer surface of the cable core also includes a segmented resin sealing layer;

[0005] The armored cable is divided into two parts: resin-sealed section and non-resin-sealed section;

[0006] The resin sealing section is an armored cable containing a resin sealing layer, which ensures that the cable core in the sealing section is completely isolated from the air and the resin is in full contact with the cable core and the inner insulation layer.

[0007] The non-resin sealing section is an armored cable without a resin sealing layer. The resin sealing section cable and the non-resin sealing section cable are arranged alternately, which can not only block the gas exchange inside the cable and reduce local cable damage, especially the damage to the entire cable caused by air intake due to damage at both ends during cable installation, but also take into account the good heat dissipation characteristics of the cable.

[0008] In order to meet the cable's ability to block air circulation in different environments:

[0009] The segmented resin blocking layer can be provided with different resin blocking section lengths and non-resin blocking section lengths and different resin materials according to requirements and material conditions.

[0010] The resin of the segmented resin sealing layer is in close contact with the internal insulating layer, and the diameter of the resin sealing section is slightly larger than the diameter of the non-resin sealing section.

[0011] The beneficial effects of the present invention are as follows: the cable core is able to effectively block the gas exchange inside the cable through the segmented resin sealing layer, so that the air existing in the small gaps inside the cable does not circulate, and the damage to the conductive core and the insulation layer of the conductive core material inside the armored cable caused by ionized air is greatly reduced, and the damage to the entire cable caused by local cable damage, especially the damage to the end during cable installation, is greatly reduced. In addition, the non-resin sealing sections and the resin sealing sections are alternately arranged, so that the entire cable still has extremely good heat dissipation performance; the above characteristics greatly extend the service life of the armored cable.

[0012] In order to realize the production of the above-mentioned armored cables, we have specially designed an armored cable packaging equipment to give the armored cables the function of a segmented resin sealing layer and to be able to efficiently produce the segmented resin filling layer of the cable.

[0013] The packaging device comprises a base, on which a primary resin packaging module, a secondary resin packaging module, a cable packaging module and a cable storage module are sequentially arranged.

[0014] In order for the primary resin injection module to meet the requirements of spraying resin:

[0015] Specifically, the primary resin injection module includes a front-end nozzle bracket arranged on one side of the base, a plurality of front-end spray chambers are distributed on one side of the front-end nozzle bracket, a No. 2 sealing ring is provided on the side of the front-end spray chamber away from the secondary resin injection module, a No. 1 sealing ring is provided on the other side of the front-end spray chamber, a plurality of front-end resin injection ports are provided on the radial surface of the front-end spray chamber, and a front-end resin collecting port is provided at the bottom end of the radial surface of the front-end spray chamber; a front-end bearing is provided on the other side of the front-end nozzle bracket, the front-end bearing is connected to the runner, the runner is connected to the front-end input gear, the front-end input gear engages with the front-end output gear, and the front-end output gear is connected to the front-end motor.

[0016] The beneficial effect of this improvement is that the primary resin injection module has the function of periodically spraying resin on the surface of the cable core, and can adjust the injection cycle according to demand, thereby adjusting the length of the sprayed resin, adjusting the inner diameter of the sealing ring, and thereby adjusting the thickness of the sprayed resin.

[0017] In order to make the secondary resin injection module achieve a better sealing effect and further cool the resin so that the resin does not affect the sealing effect due to fluidity, the following are required:

[0018] In addition to a resin completion module similar to the primary resin injection module, the secondary resin injection module also includes a cooling module. The secondary resin injection module includes a middle base arranged in the middle of the base, a cooling shell is provided on the middle base, a cooling gas inlet is provided on one side of the cooling shell, and a cooling gas outlet is provided on the other side of the cooling shell. A ventilation pipe is provided inside the cooling shell, and a middle spray chamber is provided at one end of the ventilation pipe close to the primary injection module. A plurality of middle resin collecting ports are provided on the radial surface of the middle spray chamber, and a middle resin collecting port is provided at the bottom end of the radial surface of the middle spray chamber. The middle spray chamber is connected to the middle line inlet, and a No. 3 sealing ring is provided on the side of the middle spray chamber close to the middle line inlet, and a No. 4 sealing ring is provided on the other side of the middle spray chamber.

[0019] The beneficial effect of this improvement is that the secondary resin injection module not only has the function of secondary resin periodic spraying and completion, but also further cools and shapes the resins of the primary spraying and the secondary spraying at the same time, uses cooling gas for cooling, speeds up the cooling process, and greatly improves the efficiency of the equipment.

[0020] The cable storage module includes a collecting turntable arranged on the base, rear end bearings are provided on both sides of the collecting turntable, the rear end bearings are connected to the base, one side of the collecting turntable is connected to the rear end input gear, the rear end input gear engages with the rear end output gear, and the rear end output gear is connected to the rear end motor.

[0021] The packaging device includes the following packaging steps:

[0022] When reaching the segmented resin sealing layer, the primary resin encapsulation module starts working. If the armored cable is a single-core cable and the cable conductor is a single one, the surface of the single conductive core is sprayed with resin for the first time so that the resin evenly covers the surface of the conductive core as primary protection. If the armored cable is a conductive core formed by winding multiple strands of conductors or arranged in parallel, the surface of each strand of conductor must be completely covered with resin to form a whole.

[0023] If the armored cable is a multi-core cable, the conductive cores of the multi-core cable must also be completely filled with resin to ensure that there are no gaps between the conductive core wires.

[0024] The secondary resin injection module sprays resin again on the surface of several wound or parallel conductive cores so that the resin evenly covers the surface of several cables. The cooling module keeps the resin tightly combined with the inner insulation layer of the cable packaging in the next stage, so that the resin will not cause loose sealing due to fluidity, and the initially packaged cable is obtained.

[0025] When the segmented resin plugging layer is not reached,

[0026] According to different needs and requirements of different wire cores, the primary resin encapsulation module can be selected to work or not to work.

[0027] When the primary resin encapsulation module is working, the surface of the conductive core is initially sprayed with resin so that the resin evenly covers the surface of the conductive core as primary protection. At this time, the supplementary module of the secondary resin injection module is not working.

[0028] or the primary resin encapsulation module and the secondary resin injection module's complement modules are not working;

[0029] Then proceed to the cable encapsulation module to armor the cable and add an outer insulation layer;

[0030] Cable storage module, for storing armored cables.

[0031] Moreover, according to different needs, the packaging equipment can also be expanded in different ways, such as by designing several primary resin injection modules and several secondary resin injection modules to meet the purpose of meeting different environments, different working conditions or different requirements.

[0032] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG1 is a schematic cross-sectional view of the present invention;

[0034] FIG2 is an axonometric view of the packaging device of the present invention;

[0035] FIG3 is a side cross-sectional schematic diagram of the packaging device of the present invention;

[0036] FIG4 is a schematic cross-sectional view of a front-end spray chamber of a packaging device according to the present invention;

[0037] FIG5 is a partial enlarged schematic diagram of point A of the packaging device of the present invention;

[0038] In the figure: 1. Cable core; 2. Resin sealing layer; 3. Inner insulation layer; 4. Armor layer; 5. Outer insulation layer; 6. Base; 7. Front spray chamber; 8. Front resin collecting port; 9. Front nozzle bracket; 10. Front input gear; 11. Front output gear; 12. Front motor; 13. Front bearing; 14. Rotor; 15. Middle line inlet; 16. Middle spray chamber; 17. Middle resin collecting port; 18. Cooling gas outlet; 19. Ventilation pipe; 20. Cooling shell; 21. Collecting turntable; 22. No. 1 sealing ring; 23. Front resin injection port; 24. Middle resin injection port; 25. No. 2 sealing ring; 26. Front coil outlet; 27. Middle base; 28. Rotor hole; 29. ​​Cooling gas inlet; 30. Rear motor; 31. Rear output gear; 32. Rear input gear; 33. Rear bearing; 34. No. 3 sealing ring; 35. No. 4 sealing ring. Implementation Method

[0039] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0040] As shown in Figures 1-5, an armored cable includes a cable core 1, which is sequentially wrapped with an inner insulation layer 3, an armor layer 4, and an outer insulation layer 5. The cable core 1 also includes a segmented resin sealing layer 2.

[0041] The armored cable is divided into two parts: resin-sealed section and non-resin-sealed section;

[0042] The resin sealing section is an armored cable containing a resin sealing layer, which ensures that the cable core in the sealing section is completely isolated from the air and the resin is in full contact with the cable core 1 and the internal insulation layer 3.

[0043] The non-resin sealing section is an armored cable without a resin sealing layer. The resin sealing section cable and the non-resin sealing section cable are arranged alternately, which can not only block the gas exchange inside the cable and reduce local cable damage, especially the damage to the entire cable caused by air intake due to damage at both ends during cable installation, but also take into account the good heat dissipation characteristics of the cable.

[0044] The resin of the segmented resin sealing layer 2 is in close contact with the internal insulating layer 3 , and the diameter of the resin sealing segment is slightly larger than the diameter of the non-resin sealing segment.

[0045] A packaging device for an armored cable comprises a base 6 on which a primary resin packaging module, a secondary resin packaging module, a cable packaging module and a cable storage module are sequentially arranged.

[0046] Specifically, the primary resin injection module includes a front end nozzle bracket 9 arranged on one side of the base 6, and a plurality of front end spray chambers 7 are distributed on one side of the front end nozzle bracket 9. A No. 2 sealing ring 25 is provided on the side of the front end spray chamber 7 away from the secondary resin injection module, and a No. 1 sealing ring 22 is provided on the other side of the front end spray chamber 7. A plurality of front end resin injection ports 23 are provided on the radial surface of the front end spray chamber 7, and a front end resin collecting port 8 is provided at the bottom end of the radial surface of the front end spray chamber 7; a front end bearing 13 is provided on the other side of the front end nozzle bracket 9, and the front end bearing 13 is connected to the runner 14, and the runner 14 is connected to the front end input gear 10, and the front end input gear 10 engages with the front end output gear 11, and the front end output gear 11 is connected to the front end motor 12.

[0047] In addition to a resin completion module similar to the primary resin injection module, the secondary resin injection module also includes a cooling module, including a middle base 27 arranged in the middle of the base 6, a cooling shell 20 is provided on the middle base 27, a cooling gas inlet 29 is provided on one side of the cooling shell 20, and a cooling gas outlet 18 is provided on the other side of the cooling shell 20, a ventilation pipe 19 is provided inside the cooling shell 20, and a middle spray chamber 16 is provided at one end of the ventilation pipe 19 close to the primary injection module, a plurality of middle resin collecting ports 17 are provided on the radial surface of the middle spray chamber 16, a middle resin collecting port 17 is provided at the bottom end of the radial surface of the middle spray chamber 16, the middle spray chamber is connected to the middle line inlet 15, a No. 3 sealing ring 34 is provided on the side of the middle spray chamber 16 close to the middle line inlet 15, and a No. 4 sealing ring 35 is provided on the other side of the middle spray chamber 16.

[0048] The cable storage module includes a collecting turntable 21 arranged on the base 6, and rear end bearings 33 are provided on both sides of the collecting turntable 21. The rear end bearings 33 are connected to the base 6. One side of the collecting turntable 21 is connected to the rear end input gear 32, and the rear end input gear 32 engages with the rear end output gear 31. The rear end output gear 31 is connected to the rear end motor 30.

[0049] The packaging device includes the following packaging steps:

[0050] When reaching the segmented resin sealing layer 2, the primary resin encapsulation module works. If the armored cable is a single-core cable and the cable conductor is a single one, then the surface of the single conductive core is initially sprayed with resin so that the resin evenly covers the surface of the conductive core as primary protection. If the armored cable is a conductive core formed by winding multiple strands of conductors or arranged in parallel, the surface of each strand of conductor must be completely covered with resin to form a whole.

[0051] If the armored cable is a multi-core cable, the conductive cores of the multi-core cable must also be completely filled with resin to ensure that there are no gaps between the conductive core wires.

[0052] The secondary resin injection module sprays resin again on the surface of several wound or parallel conductive cores so that the resin evenly covers the surface of several cables. The cooling module keeps the resin tightly combined with the internal insulation layer 3 of the cable packaging in the next stage, so that the resin will not cause loose sealing due to fluidity, and a preliminarily packaged cable is obtained.

[0053] When the segmented resin sealing layer 2 is not reached,

[0054] According to different needs and requirements of different wire cores, the primary resin encapsulation module can be selected to work or not to work.

[0055] When the primary resin encapsulation module is working, the surface of the conductive core is initially sprayed with resin so that the resin evenly covers the surface of the conductive core as primary protection. At this time, the supplementary module of the secondary resin injection module is not working.

[0056] or the primary resin encapsulation module and the secondary resin injection module's complement modules are not working;

[0057] Then continue with the cable encapsulation module, armor the cable and add an outer insulation layer 5;

[0058] Cable storage module, for storing armored cables.

[0059] Moreover, according to different needs, the packaging equipment can also be expanded in different ways, such as by designing several primary resin injection modules and several secondary resin injection modules to meet the purpose of meeting different environments, different working conditions or different requirements.

[0060] The working principle and usage process of the present invention are as follows: First, a number of cable cores 1 pass through the primary resin injection module, the secondary resin injection module, and the cable storage module in sequence. Then, the power is turned on, and the rear-end motor 30 rotates, driving the collection turntable 21 to rotate, providing a certain speed for the cable. When the cable core 1 passes through the front-end spray chamber 7, a number of front-end resin injection ports 8 periodically spray out resin. The injection cycle can be adjusted according to the demand for the cable. Since the speed of movement of the cable core 1 is constant, segmented resin will be sprayed on the surface of the cable core 1. According to the outer diameter requirements of the cable core 1, sealing rings with different inner diameters are set. The excess resin will be scraped off by the No. 1 sealing ring 22 and then collected through the front-end resin collection port 8. After that, the cable core 1 passes through the wheel hole 28, and is then wound by the wheel 14 and enters the secondary resin injection module.

[0061] In the secondary resin injection module, the cable core 1 enters the middle spray chamber 16 through the middle line inlet 15, and several middle resin injection ports 24 periodically spray resin so that the resin sprayed again just covers the resin sprayed from the front resin injection port 23, and the excess resin is scraped off with a No. 4 sealing ring 35, and then collected by the middle resin collecting port 17; then the cable core 1 passes through the ventilation pipe 19, and the cooling gas enters from the cooling gas inlet 29 to cool the resin on the surface of the cable core 1 passing through the inside of the ventilation pipe 19, and then is discharged through the cooling gas outlet 18; finally, the resin sprayed on the surface of the cable core 1 cools and hardens to reach the required diameter requirement, and then enters the cable packaging module and the cable storage module to complete the storage and prepare to enter the subsequent procedures.

[0062] The cable core 1 that has been subjected to segmented resin spraying is sequentially wrapped with an inner insulating layer 3, an armor layer 4, and an outer insulating layer 5 on its outer surface, thereby completing the production of the armored cable.

[0063] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0064] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method of the present invention and its core ideas. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. An armored cable, comprising a cable core (1), wherein the cable core (1) is sequentially wrapped with an inner insulating layer (3), an armor layer (4), and an outer insulating layer (5), characterized in that: The cable core (1) also includes a segmented resin sealing layer (2) outside; The armored cable is divided into two parts: resin-sealed section and non-resin-sealed section; The resin sealing section is an armored cable containing a resin sealing layer; The non-resin sealing section is an armored cable that does not contain a resin sealing layer.

2. An armored cable according to claim 1, characterized in that: The resin of the segmented resin sealing layer (2) is tightly fitted to the internal insulating layer (3), and the diameter of the resin sealing segment is slightly larger than the diameter of the non-resin sealing segment.

3. A packaging device for an armored cable, characterized in that: A packaging device applied to an armored cable design with a segmented resin sealing layer (2) according to claim 1.

4. The armored cable packaging device according to claim 3, characterized in that: The packaging device comprises a base (6), on which a primary resin packaging module, a secondary resin packaging module, a cable packaging module, and a cable storage module are sequentially arranged; The packaging device includes the following packaging steps: When reaching the segmented resin plugging layer (2), the primary resin encapsulation module operates to spray the surface of a single conductive core or a plurality of single conductive core windings or conductive cores formed in parallel with the resin for the first time, so that the resin evenly covers the surface of each conductive core as primary protection; A secondary resin spraying module is used to spray the surfaces of several wound or parallel conductive cores with resin again, so that the resin evenly covers the surfaces of several cables, and a cooling module is used to keep the resin tightly combined with the inner insulating layer (3) of the cable packaging in the next stage, so that the resin will not cause a poor seal due to fluidity, thereby obtaining a preliminarily packaged cable; A cable encapsulation module for adding armor and an outer insulation layer to the preliminarily encapsulated cable (5); Cable storage module, to store armored cables.

5. The armored cable packaging device according to claim 4, characterized in that: The packaging device also includes the following packaging steps: When the segmented resin plugging layer (2) is not reached, The primary resin encapsulation module works by spraying the surface of the conductive core with resin for the first time, so that the resin evenly covers the surface of the conductive core as primary protection; The resin replenishment module of the secondary resin injection module does not work; Cable encapsulation module, which adds armoring and outer insulation layer to the cable (5); Cable storage module, to store armored cables.

6. The armored cable packaging device according to claim 4, characterized in that: The packaging device also includes the following packaging steps: When the segmented resin plugging layer (2) is not reached, The resin completion modules of the primary resin encapsulation module and the secondary resin injection module are not working; Cable encapsulation module, which adds armoring and outer insulation layer to the cable (5); Cable storage module, to store armored cables.

7. The armored cable packaging device according to claim 4, characterized in that: The primary resin injection module comprises a front nozzle support (9) arranged on one side of the base (6); a plurality of front spray chambers (7) are distributed on one side of the front nozzle support (9); a second sealing ring (25) is provided on the side of the front spray chamber (7) away from the secondary resin injection module; a first sealing ring (22) is provided on the other side of the front spray chamber (7); a plurality of front resin injection ports (23) are provided on the radial surface of the front spray chamber (7); a front resin collection port (8) is provided at the bottom end of the radial surface of the front spray chamber (7); a front bearing (13) is provided on the other side of the front nozzle support (9); the front bearing (13) is connected to a rotating wheel (14); the rotating wheel (14) is connected to a front input gear (10); the front input gear (10) meshes with a front output gear (11); and the front output gear (11) is connected to a front motor (12).

8. The armored cable packaging device according to claim 4, characterized in that: The secondary resin injection module comprises a resin completion module and a middle base (27) arranged in the middle of the base (6); a cooling shell (20) is arranged on the middle base (27); a cooling gas inlet (29) is arranged on one side of the cooling shell (20); a cooling gas outlet (18) is arranged on the other side of the cooling shell (20); a ventilation pipe (19) is arranged inside the cooling shell (20); a middle spray chamber (16) is arranged at one end of the ventilation pipe (19) close to the primary injection module; a plurality of middle resin collection ports (17) are arranged on the radial surface of the middle spray chamber (16); a middle resin collection port (17) is arranged at the bottom end of the radial surface of the middle spray chamber (16); the middle spray chamber is connected to the middle line inlet (15); a No. 3 sealing ring (34) is arranged on one side of the middle spray chamber (16) close to the middle line inlet (15); and a No. 4 sealing ring (35) is arranged on the other side of the middle spray chamber (16).

9. The armored cable packaging device according to claim 4, characterized in that: The cable storage module comprises a collecting turntable (21) arranged on the base (6), rear end bearings (33) are provided on both sides of the collecting turntable (21), the rear end bearings (33) are connected to the base (6), one side of the collecting turntable (21) is connected to a rear end input gear (32), the rear end input gear (32) meshes with a rear end output gear (31), and the rear end output gear (31) is connected to a rear end motor (30).

10. The armored cable packaging device according to claim 4, characterized in that: The primary resin injection modules and the secondary resin injection modules each include a plurality of modules.

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