CN213184629U

CN213184629U - Water-blocking branch cable

Info

Publication number: CN213184629U
Application number: CN202021900541.7U
Authority: CN
Inventors: 赖志杰
Original assignee: Shenzhen Qingyi Electronics Co ltd
Current assignee: Shenzhen Qingyi Electronics Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-05-11
Anticipated expiration: 2030-09-03

Abstract

The utility model discloses a waterproofing type branch cable, its technical scheme is: comprises a main cable, a branch cable, a cable protection component and an external protection device, wherein the main cable is connected with the branch cable in a pressing way, an outer protection device is arranged on the outer side of the intersection of the main cable and the branch cable, a cable protection component is arranged on the outer side of the main cable, the outer protection device comprises a fixing piece which is connected with the main cable and the branch cable in a pressing way, the outer wall of the main cable is sleeved with the main protective sleeve, the outer wall of the branch cable is sleeved with the branch protective sleeve, the outer wall of the branch protective sleeve is fixedly connected with the rubber pad, the utility model ensures that the main cable has good water-blocking performance through the matching of the first water-absorbing layer, the second water-absorbing layer and the through hole, and the joint of the main cable and the branch cable has good water-blocking capacity through the matching of the main cable with the water-blocking performance fixing part, the main protective sleeve and the, meanwhile, the protective sleeve and the rubber pad enable the main cable and the branch cable joint to be tight and not easy to loosen.

Description

Water-blocking branch cable

Technical Field

The utility model relates to a branch cable technical field, concretely relates to waterproofing type branch cable.

Background

The branch cable is a new generation medium-low voltage power supply circuit system successfully developed in power systems in the middle and later periods of 90 years in a few industrially advanced countries, has the advantages of safe and reliable power supply, low use cost, simple installation, low environmental requirement, maintenance-free performance and the like, is widely popularized and applied to distribution systems of houses, high-rise office buildings, tunnels, hotels, hospitals, markets and the like, and can also be used for lighting systems with branch line requirements on main pole lines, the quality of the branch connector determines the quality of the branch cable, and like common cables, the branch cable is generally installed in an electric vertical shaft or a cable trench, a laying place is always inevitably filled with more or less moisture, the branch cable is also always soaked in water, and the branch connector and the main cable are also easily made to be connected during the processing and subsequent installation and use of the branch cable, Gaps are created between the branch cables, causing the penetration of moisture, such as: the connector connecting piece is dislocated due to the action of crimping force in the pressing forming process, poor adhesion force is caused by the fact that insulating materials for injection molding are different from outer layer sheath materials of the main cable and the branch cable, and the connector is loosened due to the fact that the main cable and the branch cable are pulled in the installation process.

The existing branch cable has poor protection on the joint of the main cable and the branch cable, and cannot carry out water blocking and water absorption treatment on the cable.

Therefore, it is necessary to invent a water-blocking type branch cable.

SUMMERY OF THE UTILITY MODEL

For this, the utility model provides a waterproofing type branch cable through setting up outer protection device, makes main cable and branch cable structure department structure inseparabler, is difficult for the infiltration, sets up cable protection subassembly, makes the cable possess excellent water blocking performance, and the joint department protection of solving traditional branch cable main cable and branch cable is relatively poor to can't block water and absorb water the problem of handling to the cable.

In order to achieve the above object, the present invention provides the following technical solutions:

a water-blocking branch cable comprises a main cable, a branch cable, a cable protection component and an external protection device, wherein the main cable is connected with the branch cable in a pressing mode, the external protection device is arranged on the outer side of the intersection of the main cable and the branch cable, and the cable protection component is arranged on the outer side of the main cable;

the outer protection device comprises a fixing piece, the fixing piece is connected with a main cable and a branch cable in a pressing mode, the outer wall of the main cable is sleeved with a main protection sleeve, the outer wall of the branch cable is sleeved with a branch protection sleeve, the outer wall of the branch protection sleeve is fixedly connected with a rubber pad, the outer wall of the rubber pad is sleeved with a cable protection sleeve, the outer wall of the fixing piece is fixedly connected with a fixing piece protection sleeve, the outer wall of the protection sleeve is fixedly connected with a waterproof layer, and;

the cable protection assembly comprises a rubber strip, a main cable is arranged on the outer side of the rubber strip, a first water absorption layer is arranged on the outer side of the main cable, hemp ropes are arranged in the first water absorption layer, the outer wall of the first water absorption layer is connected with a steel wire layer in a pressing mode, the outer wall of the steel wire layer is connected with a soft rubber layer in a pressing mode, through holes are formed in the rubber layer, a second water absorption layer is arranged on the outer wall of the soft rubber layer, and the outer wall of the second water absorption layer is fixedly connected.

Preferably, the connecting sheets are fixedly installed at two ends of the protective sleeve, the waterproof layer and the rubber layer, and two groups of the connecting sheets are fixedly connected through bolts.

Preferably, the waterproof layer is made of acrylic materials.

Preferably, the surface of the fixing part is provided with salient points.

Preferably, the cable inner wall protective sleeve wraps the main cable, the branch cable, the rubber pad and the branch protective sleeve.

Preferably, the first water absorption layer and the second water absorption layer are made of anhydrous calcium chloride and solid phosphorus pentoxide respectively.

Preferably, the cable protection assembly further comprises a water-resistant layer, the outer wall of the soft rubber layer is fixedly connected with the water-resistant layer, the outer wall of the water-resistant layer is fixedly connected with the second water-absorbing layer, and the water-resistant layer is made of a low-smoke halogen-free flame-retardant polyolefin material which is melted in a hot state.

The utility model has the advantages that:

when the novel water absorption type cable fixing device is used, a main cable and a branch cable are connected, the joint of the main cable and the branch cable is tightly pressed by a fixing frame, a protective sleeve is sleeved on a fixing piece and wraps a part of the cable and the branch cable extending out of the fixing piece, a connecting piece is screwed by a nut, the fixing piece is protected in a waterproof mode by a waterproof layer, a second water absorption layer on the outer side of the main cable absorbs moisture for the first time, the first water absorption layer absorbs moisture for the second time, and water vapor and water are discharged through a through hole on a soft rubber layer; through the cooperation of the first water-absorbing layer, the second water-absorbing layer and the through holes, the main cable has good water-blocking performance.

The protective sleeve made of the high-density polyethylene material fills a channel for water intrusion to form a compact structure, and the purposes of longitudinal and radial water blocking are achieved, so that the water blocking effect at the joints of the main cable and the branch cable is achieved; the cooperation of mounting, main protective sheath and waterproof layer makes main cable and branch cable joint department possess fine water-blocking capability, and protective sheath, rubber pad make main cable and branch cable joint department structure closely be difficult for not hard up simultaneously.

Drawings

Fig. 1 is a schematic structural diagram provided in embodiment 1 of the present invention;

fig. 2 is a side view of an outer protective device provided in embodiment 1 of the present invention;

fig. 3 is a schematic structural diagram of a cable protection assembly provided in embodiment 1 of the present invention;

fig. 4 is a schematic structural diagram of a cable protection assembly provided in embodiment 2 of the present invention.

In the figure: the cable protection device comprises a main cable 1, an outer protection device 2, a cable protection component 3, a branch cable 4, a fixing part protective sleeve 21, a fixing part 22, a cable protective sleeve 23, a rubber pad 24, a branch protective sleeve 25, a salient point 26, a waterproof layer 28, a rubber layer 29, a connecting piece 291, a 292 bolt, a rubber strip 31, a first water absorption layer 32, a hemp rope 33, a steel wire layer 34, a soft rubber layer 35, a second water absorption layer 36, a hard rubber layer 37 and a water resistance layer 38.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example 1:

referring to fig. 1 to 3 of the specification, a watertight type branch cable of this embodiment includes a main cable 1, an outer protector 2, a cable protective assembly 3, and a branch cable 4.

Further, the outer protection device 2 comprises a protection sleeve 21, a fixing member 22, a cable protection sleeve 23, a rubber pad 24, a branch protection sleeve 25, a bump 26, a waterproof layer 28, a rubber layer 29, a connecting piece 291 and a bolt 292, specifically, the fixing member 22 is connected with the main cable 1 and the branch cable 4 in a pressing manner, the outer wall of the main cable 1 is sleeved with the main protection sleeve 27, the outer wall of the branch cable 2 is sleeved with the branch protection sleeve 25, the outer wall of the branch protection sleeve 25 is fixedly connected with the rubber pad 24, the outer wall of the rubber pad 24 is sleeved with the cable protection sleeve 23, the outer wall of the fixing member 22 is fixedly connected with the fixing member protection sleeve 21, the outer wall of the fixing member protection sleeve 21 is fixedly connected with the waterproof layer 28, the outer wall of the waterproof layer 28 is fixedly, the two groups of connecting pieces 291 are fixedly connected through bolts 292, the waterproof layer 28 is made of acrylic materials, the surface of the fixing piece 22 is provided with salient points 26, and the inner wall of the cable protective sleeve 23 is wrapped by the main cable 1, the branch cable 4, the rubber pad 24 and the branch protective sleeve 25; the fixing piece protective sleeve 21 supports and protects the fixing piece 22 and the joint of the main cable 1 and the branch cable 4, the protective sleeve 21 is made of high-density polyethylene, the joint of the main cable 1 and the branch cable 4 is prevented from loosening, the fixing piece 22 is used for pressing the main cable 1 and the branch cable 4 together, the connection structure of the joint of the main cable 1 and the branch cable 4 is prevented from being tighter, meanwhile, water is prevented from entering the joint of the main cable 1 and the branch cable 4, the left end of the cable protective sleeve 23 extends into one part of the protective sleeve 21, the main cable 1, the branch cable 4, the rubber pad 24 and the branch protective sleeve 25 extending out of the fixing piece protective sleeve 21 are effectively supported and protected, abrasion is prevented, the rubber pad 24 is used for supporting and protecting the gap between the main cable 1 and the branch cable 4, and the joint of the main cable 1 and the branch cable 4 is prevented from being, the cable protective sleeve 23 is used for protecting the main cable 1 and avoiding electromagnetic interference caused by the main cable 1 to the branch cable 4, the branch protective sleeve 25 is used for protecting the branch cable and avoiding electromagnetic interference caused by the branch cable 4 to the main cable 1, the salient points 26 are used for enabling the fixing piece protective sleeve 21 and the fixing piece 22 to be connected more tightly and avoiding the fixing piece protective sleeve 21 from sliding or even falling off on the fixing piece 22 to lose the protection effect on the fixing piece 22, the waterproof layer 28 is made of an acrylic acid material, a single-component water emulsion type waterproof coating prepared by taking pure acrylic acid polymer emulsion as a base material and adding other additives is cured to form a waterproof film, and the waterproof film has certain extensibility, elastoplasticity, crack resistance, impermeability and weather resistance and can play roles in water prevention, seepage prevention and protection, the rubber layer 29 is made of butyl rubber and has water-blocking property, High temperature resistant, ageing-resistant and high gas tightness etc. effectually protect main cable 1 and branch cable 4 joint waterproof, high temperature resistant, and connection piece 291 and bolt 292 effect are the maintenance and the change part that make things convenient for main cable 1 and branch cable 4 joint department.

Further, the cable protection component 3 includes a rubber strip 31, a first water absorption layer 32, a hemp rope 33, a steel wire layer 34, a soft rubber layer 35, a second water absorption layer 36, a hard rubber layer 37 and a water blocking layer 38, specifically, a main cable 1 is arranged outside the rubber strip 31, the first water absorption layer 32 is arranged outside the main cable 1, the hemp rope 33 is arranged in the first water absorption layer 32, the outer wall of the first water absorption layer 32 is connected with the steel wire layer 34 in a pressing mode, the outer wall of the steel wire layer 34 is connected with the soft rubber layer 35 in a pressing mode, a through hole 351 is formed in the soft rubber layer 35, the outer wall of the soft rubber layer 35 is provided with the second water absorption layer 36, the outer wall of the second water absorption layer 36 is fixedly connected with the hard rubber layer 37, and the first water absorption layer 32 and the second water absorption layer 36 are made; rubber strip 31 is located the most central point of main cable 1 and puts, the material is butadiene styrene rubber, has fine elasticity, make main cable 1 can take place little deformation, first water absorption layer 32 is anhydrous calcium chloride material, the second water absorption layer 36 is the solid phosphorus pentoxide material, have fine water absorption effect, make main cable 1 possess fine water blocking effect, hemp rope 33, steel wire layer 34 makes main cable 1 possess high elasticity and high strength, the effect of solid rubber layer 37 is the part wholeness protection to the inside, through-hole 351 effect is to carry out the heat exchange, the effectual heat with main cable 1 passes away.

The implementation scenario is specifically as follows: when the novel water absorption type cable fixing device is used, a main cable 1 and a branch cable are connected, the joint of the main cable 1 and the branch cable 4 is compressed by a fixing frame, a fixing piece protecting sleeve 21 is sleeved on a fixing piece 22, the protecting sleeve 21 wraps the cable 1 and a part of the branch cable extending out of the fixing piece 22, a connecting piece 291 is screwed by a nut 292, the fixing piece 22 is protected in a waterproof mode through a waterproof layer 28, a second water absorption layer 36 on the outer side of the main cable 1 absorbs moisture for the first time, a first water absorption layer 32 absorbs moisture for the second time, and when the soft rubber layer 35 is arranged, water vapor and water are removed through a through hole 351; the fixing piece protective sleeve 21 made of high-density polyethylene fills a channel for water intrusion to form a compact structure, and the purpose of longitudinal and radial water blocking is achieved, so that the joint of the main cable 1 and the branch cable 4 achieves the water blocking effect.

Example 2:

referring to the attached figure 4 of the specification, the difference from the embodiment 1 is that: the cable protection component 3 further comprises a water-blocking layer 38, the outer wall of the soft rubber layer 35 is fixedly connected with the water-blocking layer 38, the outer wall of the water-blocking layer 38 is fixedly connected with the second water-absorbing layer 36, and the water-blocking layer 38 is made of a low-smoke halogen-free flame-retardant polyolefin material which is melted in a thermal state, so that the main cable 1 has excellent water-blocking performance, and the operation safety and reliability of the building electric circuit are greatly improved.

The implementation scenario is specifically as follows:

and the first water absorption layer 32 absorbs water for the second time, and the water resistance layer 38 of the low-smoke halogen-free flame-retardant polyolefin is melted in a thermal state on the basis that the through holes 351 remove water vapor and water on the soft rubber layer 35.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.

Claims

1. The utility model provides a waterproofing type branch cable, includes main cable (1), branch cable (4), cable protection subassembly (3) and outer protection device (2), its characterized in that: the main cable (1) is connected with the branch cable (4) in a pressing mode, an outer protection device (2) is arranged on the outer side of the intersection of the main cable (1) and the branch cable (4), and a cable protection component (3) is arranged on the outer side of the main cable (1);

the outer protection device (2) comprises a fixing piece (22), the fixing piece (22) is connected with a main cable (1) and a branch cable (4) in a pressing mode, the outer wall of the main cable (1) is sleeved with a main protection sleeve (27), the outer wall of the branch cable (4) is sleeved with a branch protection sleeve (25), the outer wall of the branch protection sleeve (25) is fixedly connected with a rubber pad (24), the outer wall of the rubber pad (24) is sleeved with a cable protection sleeve (23), the outer wall of the fixing piece (22) is fixedly connected with a fixing piece protection sleeve (21), the outer wall of the fixing piece protection sleeve (21) is fixedly connected with a waterproof layer (28), and the outer wall;

the cable protection component (3) comprises a rubber strip (31), a main cable (1) is arranged on the outer side of the rubber strip (31), a first water absorption layer (32) is arranged on the outer side of the main cable (1), hemp ropes (33) are arranged in the first water absorption layer (32), a steel wire layer (34) is connected with the outer wall of the first water absorption layer (32) in a pressing mode, a soft rubber layer (35) is connected with the outer wall of the steel wire layer (34) in a pressing mode, a through hole (351) is formed in the soft rubber layer (35), a second water absorption layer (36) is arranged on the outer wall of the soft rubber layer (35), and the second water absorption layer (36) is fixedly connected with a hard.

2. The water-blocking type branch cable according to claim 1, wherein: fixing piece protective sheath (21), waterproof layer (28) and rubber layer (29) both ends fixed mounting connection piece (291), connection piece (291) is equipped with two sets ofly, two sets of connection piece (291) passes through bolt (292) fixed connection.

3. The water-blocking type branch cable according to claim 1, wherein: the waterproof layer (28) is made of acrylic materials.

4. The water-blocking type branch cable according to claim 1, wherein: salient points (26) are arranged on the surface of the fixing piece (22).

5. The water-blocking type branch cable according to claim 1, wherein: the inner wall of the cable protective sleeve (23) is wrapped with the main cable (1), the branch cable (4), the rubber pad (24) and the branch protective sleeve (25).

6. The water-blocking type branch cable according to claim 1, wherein: the first water absorption layer (32) and the second water absorption layer (36) are made of anhydrous calcium chloride and solid phosphorus pentoxide materials respectively.

7. The water-blocking type branch cable according to claim 1, wherein: the cable protection component (3) further comprises a water-resistant layer (38), the outer wall of the soft rubber layer (35) is fixedly connected with the water-resistant layer (38), the outer wall of the water-resistant layer (38) is fixedly connected with a second water absorption layer (36), and the water-resistant layer (38) is made of a low-smoke halogen-free flame-retardant polyolefin material which is melted in a hot state.