Four-branch water-proof cable

Abstract

The application relates to a four-branch waterproof cable which comprises an outer sleeve, a main cable body arranged in the inner part of the outer sleeve, a first branch cable body arranged at one end of the main cable body, a second branch cable body arranged at the end of the first branch cable body away from the main cable body, four groups of first fixing ring blocks fixedly connected on a round plug, second fixing ring blocks detachably arranged in the first fixing ring blocks, the second fixing ring blocks being sleeved on the second branch cable body, and sealing structures arranged between the first fixing ring blocks and the second fixing ring blocks. The application can realize the quick disassembly of the main cable body, the first branch cable body and the second branch cable body, can replace cables with different lengths, can not damage the main cable body, the first branch cable body and the second branch cable body when the main cable body, the first branch cable body and the second branch cable body are separated, can be repeatedly used, can save resources, and can realize good sealing effect and good waterproof performance at the installation connection part of the main cable body and the second branch cable body.

Description

Technical Field

[0001] This invention relates to the field of cable technology, and more particularly to a four-branch waterproof cable. Background Technology

[0002] Four-branch cables are widely used in the main lines of high-voltage power supply and distribution. Currently, the four-branch cables used in the market are mainly prefabricated branch cables.

[0003] However, if the length of the prefabricated branch cable does not meet the requirements during on-site cable installation, and the branch cable is difficult to remove from the main cable, it is generally necessary to re-fabricate the prefabricated branch cable. This process is inconvenient and wastes resources. Installing the branch cable to the main cable is also inconvenient, time-consuming, and labor-intensive. Furthermore, when the branch cable is connected to the main cable, there will be gaps at the connection point, resulting in poor waterproofing and affecting the cable's service life. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a four-branch waterproof cable and a vulcanization process. The specific technical solution is as follows:

[0005] One objective of this invention is to provide a four-branch waterproof cable, comprising an outer sheath, inside which a main cable body is disposed, a first branch cable body is disposed at one end of the main cable body, and a second branch cable body is disposed at the end of the first branch cable body away from the main cable body. An opening is provided at the end of the outer sheath away from the main cable body, and a circular plug is detachably disposed at the end of the outer sheath near the opening. Four sets of first fixing ring blocks are fixedly connected to the circular plug block, and second fixing ring blocks are detachably disposed inside the first fixing ring blocks. The second fixing ring blocks are sleeved on the second branch cable bodies, and a sealing structure is provided between the first fixing ring blocks and the second fixing ring blocks to seal the space between the first fixing ring blocks and the second fixing ring blocks.

[0006] As an improvement to the above technical solution, an annular groove is provided at one end of the outer tube near the opening. An annular insert matching the annular groove is fixedly connected to one side of the circular plug. A first fixing block is fixedly connected to both ends of the circular plug. A first fixing hole is provided on the first fixing block. A second fixing hole corresponding to the first fixing hole is provided at both ends of the outer tube near the opening. A first screw is threaded between the first fixing hole and the second fixing hole.

[0007] As an improvement to the above technical solution, a second fixing block is fixedly connected to the end of the second fixing ring block away from the circular block. The first fixing ring block has a third fixing hole on both sides of the end near the second fixing block. A fourth fixing hole is provided on the second fixing block. A second screw is threaded between the third fixing hole and the fourth fixing hole.

[0008] As an improvement to the above technical solution, the sealing structure includes two sets of guide ring blocks fixedly connected to the inner sidewall of the first fixed ring block, and a sealing ring is fixedly connected between the two sets of guide ring blocks.

[0009] As an improvement to the above technical solution, the main cable body includes a first protective sleeve, and a first wire core is disposed inside the first protective sleeve. The first branch cable body includes a second protective sleeve, and four sets of second wire cores are disposed inside the second protective sleeve. The second branch cable body includes a third protective sleeve, and a third wire core is disposed inside the third protective sleeve. One end of the second wire core is fixedly connected to the third wire core. The first protective sleeve includes a protective layer, and a first insulating layer is connected to the outside of the protective layer. The first protective sleeve and the second protective sleeve have the same structure.

[0010] As an improvement to the above technical solution, a first mounting ring block and a second mounting ring block are also fixedly connected inside the outer sleeve. The first protective sleeve is fixedly connected to the inner side wall of the first mounting ring block, and the second protective sleeve is fixedly connected to the inner side wall of the second mounting ring block.

[0011] As an improvement to the above technical solution, the third protective sleeve includes a ceramic silicone rubber layer, and a second insulating layer is fixedly connected to the inner wall of the ceramic silicone rubber layer.

[0012] The second objective of this invention is to provide a cable vulcanization process, which includes the following steps:

[0013] S1: The third core of the cable is put into the steam box after being wrapped with the third protective sleeve and vulcanized into a cable. The cable passes through the steam box at a speed close to but not higher than 280m / h. The steam box is equipped with a steam generator of the prior art. The steam generator is used to generate steam. The temperature of the generated steam is 95-100°C.

[0014] S2: After steam vulcanization, the cable is sent into the electric drying tunnel for vulcanization. The cable passes through the electric drying tunnel at a constant speed of approximately but not exceeding 280 m / h. The temperature of the electric drying tunnel is 80-85°C.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. It enables quick assembly and disassembly of the main cable body, the first branch cable body, and the second branch cable body. It allows for the replacement of cable branches of different lengths, providing the cable length required on-site. Furthermore, it ensures that the main cable body, the first branch cable body, and the second branch cable body are not damaged during separation, allowing for reuse and saving resources.

[0017] 2. When the second fixing ring is inserted into the first fixing ring, the guide ring guides the second fixing ring, and the sealing ring ensures that the inner wall of the first fixing ring and the inner wall of the second fixing ring are in close contact, so that the main cable body and the first cable body and the second branch cable body have a good sealing effect and good waterproof performance. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the entire invention;

[0019] Figure 2 This is a cross-sectional view of the second cable body in this invention;

[0020] Figure 3 This is a schematic diagram of the connection structure between the first fixing ring block and the second fixing ring block in this invention;

[0021] Figure 4 for Figure 1 Enlarged structural diagram at point A;

[0022] Figure 5 This is a schematic diagram of the connection structure between the guide ring block and the sealing ring in this invention;

[0023] Figure 6 This is a side view of the outer sleeve in this invention.

[0024] Reference numerals: 1. Outer sleeve; 2. First mounting ring block; 3. Main cable body; 4. First branch cable body; 5. First conductor; 6. Second conductor; 61. Second mounting ring block; 7. Second branch cable body; 9. Through port; 10. Circular plug; 11. Protective layer; 111. First insulation layer; 12. First fixing block; 13. First screw; 14. First fixing ring block; 15. Second fixing ring block; 16. Second fixing block; 17. Guide ring block; 18. Sealing ring; 19. Second screw; 20. Annular insert; 21. Annular groove. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0026] Example 1

[0027] This embodiment provides a four-branch waterproof cable, see [link / reference] Figures 1-6The system includes an outer sleeve 1, a main cable body 3 inside the outer sleeve, a first branch cable body 4 at one end of the main cable body 3, a second branch cable body 7 at the end of the first branch cable body 4 away from the main cable body 3, an opening 9 at the end of the outer sleeve away from the main cable body 3, and a detachable circular plug 10 at the end of the outer sleeve near the opening 9. Four sets of first fixing ring blocks 14 are fixedly connected to the circular plug 10. Further, the first fixing ring blocks 14 and the second fixing ring blocks 15 are both arranged in a ring shape. One end of the first fixing ring block 14 extends through to one side of the circular plug 10, and the other end of the first fixing ring block 14 extends through to the other side of the circular plug 10. A second fixing ring block 15 is detachably installed inside the first fixing ring block 14 and is sleeved on the second branch cable body 7. A sealing structure is provided between the first fixing ring block 14 and the second fixing ring block 15 to seal the space between them.

[0028] like Figure 1 , 4 As shown in Figure 6, an annular groove 21 is provided at one end of the outer tube sleeve near the opening 9. An annular insert 20 matching the annular groove 21 is fixedly connected to one side of the circular plug 10. Furthermore, the annular insert 20 can be inserted into the annular groove 21. A first fixing block 12 is fixedly connected to both ends of the circular plug 10. A first fixing hole is provided on the first fixing block 12. A second fixing hole corresponding to the first fixing hole is provided at both ends of the outer tube sleeve near the opening 9. A first screw 13 is threaded between the first fixing hole and the second fixing hole.

[0029] Specifically, when installing the circular plug 10 onto the outer sleeve, the annular insert 20 is inserted into the annular groove 21, and then the first fixing block 12 and the second fixing hole are fixed together by the first screw 13, so that the circular plug 10 can be quickly fixed onto the outer sleeve, making it convenient to install and remove the circular plug 10, and realizing that the circular plug 10 can be detached from the outer sleeve.

[0030] like Figure 6 As shown, the second fixing ring block 15 is fixedly connected to the end away from the circular block 10 with a second fixing block 16. The first fixing ring block 14 is provided with a third fixing hole on both sides of the end near the second fixing block 16. The second fixing block 16 is provided with a fourth fixing hole. A second screw 19 is threaded between the third fixing hole and the fourth fixing hole.

[0031] Specifically, by using the second screw 19 and fixing the second fixing block 16 to one side of the first fixing ring block 14, the first fixing ring block 14 can be quickly fixed to the second fixing ring block 15, and the first fixing ring block 14 and the second fixing ring block 15 can be disassembled and assembled.

[0032] like Figure 3As shown, the sealing structure includes two sets of guide ring blocks 17 fixedly connected to the inner wall of the first fixed ring block 14. Further, the inner wall diameter of the guide ring block 17 is equal to the outer wall diameter of the second fixed ring block 15. A sealing ring 18 is fixedly connected between the two sets of guide ring blocks 17. Further, the inner wall diameter of the sealing ring 18 is greater than the outer wall diameter of the second fixed ring block 15.

[0033] Specifically, when the second fixing ring block 15 is inserted into the first fixing ring block 14, the second fixing ring block 15 is guided by the guide ring block 17, and then the sealing ring 18 makes the inner sidewall of the first fixing ring block 14 and the inner sidewall of the second fixing ring block 15 come into close contact, achieving a good sealing effect. Furthermore, the inner sidewall of the sealing ring 18 is tapered to facilitate the insertion of the second fixing ring block 15.

[0034] like Figure 1 As shown, the main cable body 3 includes a first protective sleeve, and a first wire core 5 is provided inside the first protective sleeve. The first branch cable body 4 includes a second protective sleeve, and four sets of second wire cores 6 are provided inside the second protective sleeve, so that the cable has four branches, forming a four-branch cable.

[0035] Furthermore, the second core 6 is tightly pressed against the inside of the second protective sleeve, the second branch cable body 7 includes a third protective sleeve, the third protective sleeve is provided with a third core, one end of the second core is fixedly connected to the third core, the first protective sleeve includes a protective layer 11, the outside of the protective layer 11 is connected with a first insulating layer 111, the first protective sleeve has the same structure as the second protective sleeve, and the first insulating layer 111 and the second insulating layer provide good insulation for the main cable body 3 and the first branch cable body 4.

[0036] Preferred, such as Figure 1 As shown, the outer tube 1 is also fixedly connected to a first mounting ring block 2 and a second mounting ring block 61. The first protective sleeve is fixedly connected to the inner wall of the first mounting ring block 2, and the second protective sleeve is fixedly connected to the inner wall of the second mounting ring block 61, so that the main cable body 3 and the first branch cable body 4 are stably fixed on the outer tube.

[0037] Preferably, the third protective sleeve includes a ceramic silicone rubber layer, and a second insulating layer is fixedly connected to the inner wall of the ceramic silicone rubber layer. An insulating layer is provided on the inner side of the second insulating layer. Both the first insulating layer 111 and the second insulating layer are made of polyvinyl chloride. Furthermore, the ceramic silicone rubber layer has good waterproof and fire-resistant properties, which makes the cable have good waterproof and fire-resistant properties.

[0038] Working principle: When installing and connecting the main cable body 3 with the first branch cable body 4 and the second branch cable body 7, insert the four sets of second cores 6 into the first branch cable body 4, then move the circular plug 10 to the through port 9 so that the annular plug 20 is inserted into the annular groove 21, and at the same time, the second fixing ring 15 is inserted into the first fixing ring 14. Then, the first fixing block 12 and the second fixing hole are fixed by the first screw 13, so that the circular plug 10 can be quickly fixed onto the outer tube sleeve, which facilitates the installation and removal of the circular plug 10, and enables the circular plug 10 to be installed on the outer tube sleeve 1.

[0039] By fixing the second fixing block 16 to one side of the first fixing ring block 14 with the second screw 19, the first fixing ring block 14 can be quickly fixed to the second fixing ring block 15. The second cable body 7 can be quickly fixed to the outer tube sleeve 1 by disassembling and assembling the first fixing ring block 14 and the second fixing ring block 15.

[0040] When separating the main cable body 3 from the first branch cable body 4 and the second branch cable body 7, simply pull out the circular plug 10, and then remove the first screw 13 and the second screw 19. This allows for quick assembly and disassembly of the main cable body 3 from the first branch cable body 4 and the second branch cable body 7. Different lengths of cable branches can be replaced to obtain the cable length required on the construction site. The main cable body 3, the first branch cable body 4 and the second branch cable body 7 are not damaged when separated, and they can be reused, saving resources.

[0041] When the second fixing ring 15 is inserted into the first fixing ring 14, the guide ring 17 guides the second fixing ring 15, and the sealing ring 18 makes the inner wall of the first fixing ring 14 and the inner wall of the second fixing ring 15 come into close contact, so that the main cable body 3 and the second branch cable body 7 have a good sealing effect and good waterproof performance.

[0042] Example 2

[0043] This embodiment provides a cable vulcanization process, which includes the following steps:

[0044] S1: The third core of the cable is sent into the steam box for vulcanization after being put into the third protective sleeve. The cable passes through the steam box at a speed close to but not higher than 280m / h. The steam box is equipped with a steam generator of the prior art. The steam generator is used to generate steam. The temperature of the generated steam is close to 100°C, specifically 95-100°C.

[0045] S2: After being vulcanized in the steam box, the cable is sent to the electric drying tunnel for vulcanization. The cable passes through the electric drying tunnel at a speed close to but not higher than 280m / h. The temperature of the electric drying tunnel is 80-85°C.

[0046] Specifically, the electric drying tunnel includes a transport pipe, inside which heating wires are installed along its axial direction. A conveyor is also installed on the electric drying tunnel to drive the cable to move at a uniform speed within the transport pipe. This process vulcanizes the cable at a low temperature, avoiding high vulcanization temperatures. During production, it prevents the second insulation layer and the ceramic silicone rubber layer from sticking together after being heated, which can easily cause blistering and gaps on the surface. This prevents water seepage from the vulcanized cable due to gaps, thus further improving the waterproof performance of the vulcanized cable.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A four-branch waterproof cable, comprising an outer sheath (1), wherein a main cable body (3) is disposed inside the outer sheath (1), a first branch cable body (4) is disposed at one end of the main cable body (3), and a second branch cable body (7) is disposed at the end of the first branch cable body (4) away from the main cable body (3), characterized in that: The outer sleeve (1) has an opening (9) at one end away from the main cable body (3). A circular plug (10) is detachably provided at one end of the outer sleeve (1) near the opening (9). Four sets of first fixing ring blocks (14) are fixedly connected to the circular plug (10). A second fixing ring block (15) is detachably provided inside the first fixing ring block (14). The second fixing ring block (15) is sleeved on the second branch cable body (7). A sealing structure is provided between the first fixing ring block (14) and the second fixing ring block (15). The sealing structure can seal the space between the first fixing ring block (14) and the second fixing ring block (15). The outer sleeve (1) has an annular groove (21) at one end near the opening (9). An annular plug (20) matching the annular groove (21) is fixedly connected to one side of the circular plug (10). A first fixing block (12) is fixedly connected to both ends of the circular plug (10). A first fixing hole is provided on the first fixing block (12). A second fixing hole corresponding to the first fixing hole is provided at both ends of the outer sleeve (1) near the opening (9). A first screw (13) is threaded between the first fixing hole and the second fixing hole. The second fixing ring block (15) is fixedly connected to a second fixing block (16) at one end away from the circular block (10). The first fixing ring block (14) has a third fixing hole on both sides at one end near the second fixing block (16). The second fixing block (16) has a fourth fixing hole. A second screw (19) is threaded between the third fixing hole and the fourth fixing hole.

2. The four-branch waterproof cable according to claim 1, characterized in that: The sealing structure includes two sets of guide ring blocks (17) fixedly connected to the inner sidewall of the first fixed ring block (14), and a sealing ring (18) is fixedly connected between the two sets of guide ring blocks (17).

3. The four-branch waterproof cable according to claim 2, characterized in that: The main cable body (3) includes a first protective sleeve, and a first wire core (5) is provided inside the first protective sleeve. The first branch cable body (4) includes a second protective sleeve, and four sets of second wire cores (6) are provided inside the second protective sleeve. The second branch cable body (7) includes a third protective sleeve, and a third wire core is provided inside the third protective sleeve. One end of the second wire core (6) is fixedly connected to the third wire core. The first protective sleeve includes a protective layer (11), and a first insulating layer (111) is connected to the outside of the protective layer (11). The first protective sleeve and the second protective sleeve have the same structure.

4. The four-branch waterproof cable according to claim 3, characterized in that: The outer sleeve (1) is also fixedly connected to a first mounting ring block (2) and a second mounting ring block (61). The first protective sleeve is fixedly connected to the inner side wall of the first mounting ring block (2), and the second protective sleeve is fixedly connected to the inner side wall of the second mounting ring block (61).

5. The four-branch waterproof cable according to claim 4, characterized in that: The third protective sleeve includes a ceramic silicone rubber layer, and a second insulating layer is fixedly connected to the inner wall of the ceramic silicone rubber layer.

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