Marine photovoltaic connector cable cold shrinkage pipe

Abstract

The utility model relates to an offshore photovoltaic connector cable cold shrink pipe in the cold shrink pipe field, comprising a pipe body, the pipe body is formed by a hollow pipe, a sleeve joint hole is formed in the pipe body, a core rope pipe is sleeved in the pipe body through the sleeve joint hole, the core rope pipe can be movably installed in the sleeve joint hole of the pipe body, an installation through hole is formed in the core rope pipe, and the installation through hole is formed in the core rope pipe. The core rope pipe comprises a pipe body, two ends of the pipe body are respectively provided with a sealing portion, a sealing groove is arranged on the inner wall of a sleeve joint hole of the pipe body close to the sealing portion, and the sealing groove is filled with sealing filler, the core rope pipe can be pulled out from one end of the pipe body, so that the pipe body retracts to enable the sleeve joint hole to wrap a connection position of a cable. Therefore, radial pressure is generated at the connecting position of the cable, the installation process is simplified, the installation time and cost are reduced, meanwhile, the sealing groove is filled with the sealing filler, the waterproof sealing performance of pipe body connection is improved, the cable and the connecting position are protected against external damage, and the using safety and reliability of the pipe body are improved.

Description

Technical Field

[0001] The utility model relates to the field of cold shrink tubes, in particular to cold shrink tubes for offshore photovoltaic connector cables. Background Art

[0002] As an important connection element, cold shrink tubing is widely used in many fields. Its excellent insulation, protection and sealing performance make it occupy an important position in various cable connections. With the gradual increase in demand for new energy and electricity, global power generation technology will transform from traditional electricity (hydropower, thermal power, nuclear power) to photovoltaic and wind power. According to the strategic planning of the State Grid, clean new energy (electricity) will increase year by year in power operation, which will solve a series of power and resource problems such as "carbon neutrality, environmental and natural protection, and energy crisis"; and as the State Grid increases its construction of offshore photovoltaic power generation, the use of cold shrink cable accessories for offshore photovoltaics will effectively improve the waterproofness of offshore photovoltaic cables and their ability to withstand extreme climate shocks.

[0003] Cold shrink tubing is mainly made of polyolefin or rubber materials. It uses cold shrink technology to insulate and protect cables. At the joints of power cables, communication cables, and optical cables, cold shrink tubing can effectively isolate cables from damage by the external environment, such as physical damage, moisture intrusion, and chemical corrosion, to ensure stable operation of cables and extend their service life. Especially in offshore photovoltaic systems, the application of cold shrink tubing is indispensable for the insulation and protection of photovoltaic connector cables to ensure safe and reliable power transmission.

[0004] The existing cold shrink tube has been widely used in many fields, but its structure still has some defects. The existing cold shrink tube has complicated steps in the installation and use of cables, and it needs to use corresponding installation tools to complete the installation and use, which makes the installation time-consuming and labor-intensive, making it inconvenient to install and use. In addition, the setting of the sealing structure of the existing cold shrink tube is relatively simple, resulting in poor sealing, which affects the sealing performance of the cable connection, which is not conducive to the sealing use of the cold shrink tube and affects the practicality. Utility Model Content

[0005] The purpose of the utility model is to solve the above defects and provide an offshore photovoltaic connector cable cold shrink tube to solve the technical problems in the above background technology that the cold shrink tube is difficult to install and use and the sealing structure of the cold shrink tube is relatively simple, resulting in poor sealing, thereby affecting use.

[0006] The purpose of the utility model is achieved by the following methods:

[0007] Marine photovoltaic connector cable cold shrinkable tube, including a tube body, which is composed of a hollow tube, so that a socket hole is formed inside the tube body. A core rope tube is sleeved inside the tube body through the socket hole. The core rope tube is movably installed in the socket hole of the tube body. Both ends of the core rope tube extend towards both ends of the tube body, and both ends of the core rope tube are respectively exposed at the corresponding ends of the tube body. An installation through hole is formed inside the core rope tube. Sealing parts are formed at both ends of the tube body, and a sealing groove is opened on the inner wall of the socket hole of the tube body close to the sealing part. The sealing groove is filled with a sealing filler.

[0008] In the above description, further, the tube body is sleeved on the core rope tube through the socket hole by expansion, and the tube body and the core rope tube are coaxially sleeved and installed.

[0009] Specifically, the tube body is pre-expanded and sleeved on the core rope tube through the socket hole. An installation through hole is formed in the core rope tube, which makes it convenient to directly connect the connection part of the cable, reduces the expansion process during installation, further improves the installation efficiency, and by setting the movable core rope tube, after connecting the cable, the core rope tube can be drawn out from one end of the tube body, so that the tube body can be sleeved on the corresponding cable connection part, improving the installation efficiency.

[0010] In the above description, further, spaced protrusions are formed on the outer surface of the core rope tube in a spiral distribution. A pulling part is formed at one end of the tube body. The spaced protrusions on the outer surface of the core rope tube are in contact with the inner wall of the socket hole. The core rope tube can move axially along the socket hole of the tube body and be pulled out from the pulling part of the tube body.

[0011] Specifically, the spaced protrusions formed in a spiral distribution are in contact with the inner wall of the socket hole, which reduces the contact between the outer surface of the core rope tube and the inner wall of the socket hole, prevents close contact and inconvenience in pulling out, and thus facilitates the subsequent pulling out of the core rope tube.

[0012] Optionally, the middle part of the core rope tube is composed of a spiral protection part, that is, a spiral groove communicating with the installation through hole is opened in the middle part of the core rope tube. After the core rope tube is pulled out, it is convenient to directly take out the core rope tube from the cable through the corresponding spiral groove.

[0013] In the above description, further, the sealing part of the tube body is convex along the radial direction of the tube body. The sealing groove is circumferentially opened on the inner wall of the socket hole, and the sealing groove corresponds to the sealing part of the tube body.

[0014] In the above description, further, the sealing filler is waterproof putty or silicone putty.

[0015] Specifically, using silicone putty can form a sealed connection at the cable connection part, so that the tube body forms a waterproof and sealed cold shrinkable tube.

[0016] Further in the above description, the tube body is formed by platinum vulcanization processing of silicone rubber, and the core rope tube is formed by plastic processing.

[0017] After the core rope tube inside the tube body is conveniently removed, the tube body can retract, so as to wrap around the outer surface of the cable connection.

[0018] The core rope tube is made of plastic, which is convenient for subsequent removal.

[0019] The beneficial effects of the present utility model are as follows: The cable outside can be sleeved and connected through the installation through hole inside the core rope tube. Through the movably arranged core rope tube, after the cable is connected, the core rope tube is pulled out and removed from one end of the tube body, so that the tube body retracts, and the socket hole can wrap around the connection of the cable, thereby generating a radial pressure on the connection of the cable, thus simplifying the installation process, reducing the installation time and cost. At the same time, it can ensure that the cable connection can smoothly pass through the cold shrinkable tube without hindrance, further enhancing the overall performance and efficiency of the cold shrinkable tube. By providing the sealing parts at both ends of the tube body and filling the sealing grooves corresponding to the sealing parts with sealing fillers, the waterproof sealing performance of the tube body connection is improved, protecting the cable and the connection from external damage, and improving the safety and reliability of the tube body in use. Description of the Drawings

[0020] Figure 1 is a perspective view of this embodiment;

[0021] Figure 2 is a perspective sectional view of this embodiment;

[0022] Figure 3 is a plan sectional view of this embodiment;

[0023] Figure 4 is a structural schematic diagram of the sleeve in this embodiment;

[0024] The reference numerals in the drawings are respectively: 1 - tube body, 2 - socket hole, 3 - core rope tube, 4 - installation through hole, 5 - sealing part, 6 - sealing groove, 7 - sealing filler, 8 - spacer projection, 9 - extraction part. Detailed Embodiment

[0025] The present utility model will be further described in detail below in conjunction with the drawings and the specific embodiments.

[0026] In this embodiment, refer to Figures 1 - 4, the marine photovoltaic connector cable cold shrinkable tube implemented specifically includes a tube body 1. The tube body 1 is composed of a hollow tube, so that a socket hole 2 is formed inside the tube body 1. A core rope tube 3 is sleeved inside the tube body 1 through the socket hole 2. The core rope tube 3 is movably installed in the socket hole 2 of the tube body 1. Both ends of the core rope tube 3 extend towards both ends of the tube body 1, and both ends of the core rope tube 3 are respectively exposed at the corresponding ends of the tube body 1. An installation through hole 4 is formed inside the core rope tube 3. Sealing parts 5 are formed at both ends of the tube body 1, and a sealing groove 6 is opened on the inner wall of the socket hole 2 of the tube body 1 near the sealing part 5. A sealing filler 7 is filled inside the sealing groove 6.

[0027] The tube body 1 is sleeved on the core rope tube 3 through the socket hole 2 by expansion, and the tube body 1 and the core rope tube 3 are coaxially sleeved and installed. Specifically, the tube body 1 is pre-expanded and sleeved on the core rope tube 3 through the socket hole 2. An installation through hole 4 is formed inside the core rope tube 3, making it convenient to directly connect the connection part of the cable, reducing the expansion process during the installation process, further improving the installation efficiency, and by setting the movable core rope tube 3, after connecting the cable, the core rope tube 3 can be drawn out from one end of the tube body 1, so that the tube body 1 can be sleeved on the corresponding cable connection part, improving the installation efficiency.

[0028] Spaced protrusions 8 distributed in a spiral are formed on the outer surface of the core rope tube 3. A pulling-out part 9 is formed at one end of the tube body 1. The spaced protrusions 8 on the outer surface of the core rope tube 3 are in contact with the inner wall of the socket hole 2. The core rope tube 3 can axially move along the socket hole 2 of the tube body 1 and be pulled out from the pulling-out part 9 of the tube body 1. Specifically, the arranged spaced protrusions 8 distributed in a spiral are in contact with the inner wall of the socket hole 2, reducing the contact between the outer surface of the core rope tube 3 and the inner wall of the socket hole 2, preventing close contact and resulting in inconvenient pulling out, so that the core rope tube 3 can be conveniently pulled out later.

[0029] Optionally, the middle part of the core rope tube 3 is composed of a spiral protection part (not shown), that is, a spiral groove (not shown) communicating with the installation through hole 4 is opened in the middle part of the core rope tube 3. After the core rope tube 3 is pulled out, it is convenient to directly take out the core rope tube 3 from the cable through the corresponding spiral groove.

[0030] The sealing part 5 of the tube body 1 protrudes in the radial direction of the tube body 1. The sealing groove 6 is circumferentially opened on the inner wall of the socket hole 2, and the sealing groove 6 corresponds to the sealing part 5 of the tube body 1.

[0031] The sealing filler 7 is or silica gel mud. Specifically, using silica gel mud can form a sealed connection at the cable connection part, so that the tube body 1 forms a waterproof and sealed cold shrinkable tube.

[0032] The tube body 1 is formed by platinum vulcanization processing of silicone rubber, and the core rope tube 3 is formed by plastic processing. After the core rope tube 3 inside the tube body 1 can be conveniently removed, the tube body 1 can retract, so as to wrap around the outer surface of the cable connection. The core rope tube 3 is made of plastic, which is convenient for subsequent removal.

[0033] Specifically, the platinum vulcanization process is a high-purity silica gel preparation process. Its principle is to mix silica gel with a platinum catalyst and make it into a bendable tubular structure through heat vulcanization. This process can significantly improve the various properties of the silica gel tube, such as high temperature resistance, corrosion resistance, biocompatibility, etc. The silicone rubber has good weather resistance and can be applicable to -60 to 200 °C. In this embodiment, the platinum vulcanization process is a well-known conventional technical means in the art, so it will not be specifically described in this technical solution.

[0034] The specific usage process in this embodiment is as follows: First, the tube body 1 is pre-expanded and sleeved outside the core rope tube 3 through the socket hole 2. The two ends of the core rope tube 3 respectively extend and expose towards the ends of the tube body 1. The cable outside the core rope tube 3 can pass through and be connected in the installation through hole 4 inside the core rope tube 3. The core rope tube 3 can be axially movably arranged along the socket hole 2 of the tube body 1, so that after the cable is connected with the external connector in the installation through hole 4, the end of the core rope tube 3 close to the extraction part 9 is pulled away from the extraction part 9 and removed. After the core rope tube 3 is removed, the silicone rubber tube body 1 retracts, so that the socket hole 2 can wrap around the connection of the cable and the connector, and then generate a radial pressure on the connection of the cable and the connector, simplifying the installation process, reducing the installation time and cost. At the same time, the installation through hole 4 of the core rope tube 3 can ensure that the cable and the connector can pass through and be connected smoothly without obstruction, further enhancing the overall performance and efficiency of the cold shrink tube. And when the core rope tube 3 is removed, the sealing filler 7 filled in the sealing grooves 6 at both ends of the tube body 1 is in close contact with the cable, improving the waterproof and sealing performance of the connection of the tube body 1, protecting the cable and the connector from external damage, and improving the safety and reliability of the use of the tube body 1.

[0035] In summary, specifically, in the marine environment, harsh conditions such as high humidity and salt spray pose extremely high requirements for the sealing performance of electrical equipment. And the structure of this embodiment can effectively isolate corrosive substances such as moisture and salt in the external environment, ensuring the stability and durability of the cold shrink tube during long-term use.

[0036] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model is disclosed above in the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art, without departing from the scope of the technical solution of the present utility model, when making some changes or modifications using the above-disclosed technical content to equivalent embodiments of equivalent changes, but as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the present utility model all fall within the scope of the technical solution of the present utility model.

Claims

1. An offshore photovoltaic connector cable cold shrink tube, comprising a tube body, the tube body being composed of a hollow tube, so that a socket hole is formed inside the tube body, characterized in that: A core rope tube is sleeved in the tube body through the sleeve hole. The core rope tube can be movably installed in the sleeve hole of the tube body. Two ends of the core rope tube extend to two ends of the tube body respectively, and the two ends of the core rope tube are respectively exposed at the corresponding ends of the tube body. A mounting through hole is formed inside the core rope tube, and sealing parts are formed at both ends of the tube body. A sealing groove is formed on the inner wall of the sleeve hole of the tube body near the sealing part, and the interior of the sealing groove is filled with a sealing filler.

2. The offshore photovoltaic connector cable cold shrink tube according to claim 1, characterized in that: The tube body is sleeved on the core rope tube through the sleeve hole through expansion, and the tube body and the core rope tube are coaxially sleeved and installed.

3. The offshore photovoltaic connector cable cold shrink tube according to claim 1, characterized in that: The outer surface of the core rope tube is formed with spirally distributed spaced protrusions, and a withdrawal portion is formed at one end of the tube body. The spaced protrusions on the outer surface of the core rope tube are in contact with the inner wall of the sleeve hole. The core rope tube can move axially along the sleeve hole of the tube body and be withdrawn from the withdrawal portion of the tube body.

4. The offshore photovoltaic connector cable cold shrink tube according to claim 1, characterized in that: The sealing portion of the tube body is convexly arranged along the radial direction of the tube body, and the sealing groove is arranged around the inner wall of the sleeve hole, and the sealing groove corresponds to the sealing portion of the tube body.

5. The offshore photovoltaic connector cable cold shrink tube according to any one of claims 1 to 4, characterized in that: The sealing filler is waterproof cement or silica gel cement.

6. The offshore photovoltaic connector cable cold shrink tube according to any one of claims 1 to 4, characterized in that: The tube body is formed by platinum vulcanization of silicone rubber, and the core rope tube is formed by plastic.

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