Crosslinked polyethylene insulated cable with temperature regulation

Abstract

The application relates to the technical field of crosslinked polyethylene insulated cables, and discloses a crosslinked polyethylene insulated cable with a temperature adjusting function, which comprises a cable section, the cable section comprises a conductor, an insulation layer, an isolation sleeve and an outer sheath, a filler is arranged between the isolation sleeve and the insulation layer, and the cable further comprises a heat preservation layer, a connecting piece, a fixing piece, a temperature adjusting pipe and a temperature adjusting mechanism; the heat preservation layer is wrapped outside the isolation sleeve; the connecting piece is arranged at two ends of the cable section and is used for electrically connecting two cable sections; the fixing piece is used for fixing the connecting piece; the temperature adjusting pipe is arranged inside the isolation sleeve; a filler is arranged between the temperature adjusting pipe and the isolation sleeve; the heat preservation layer is a hollow structure; the temperature adjusting pipe and the heat preservation layer are communicated; and the temperature adjusting mechanism is used for adjusting the temperature of gas input into the heat preservation layer and the temperature adjusting pipe. Through the technical scheme, the cable in the prior art only relies on the cable material to resist temperature changes, lacks a temperature adjusting means, and the service life of the cable is reduced.

Description

Technical Field

[0001] This invention relates to the field of cross-linked polyethylene insulated cable technology, and more specifically, to a cross-linked polyethylene insulated cable with temperature regulation function. Background Technology

[0002] Cross-linked polyethylene (XLPE) insulated cables are suitable for applications such as power distribution networks. They have advantages that PVC insulated cables cannot match. XLPE insulated cables are made by using chemical or physical methods to transform the linear molecular structure of the polyethylene insulation molecules into a main network molecular structure, that is, to transform thermoplastic polyethylene into thermosetting cross-linked polyethylene. This greatly improves its heat resistance and mechanical properties, reduces its shrinkage, prevents it from melting when heated, and maintains excellent electrical properties.

[0003] Currently, cross-linked polyethylene insulated cables generally rely on the material properties of the cable itself to resist high and low temperatures. However, when faced with external temperature changes, especially rapid temperature changes, current cables lack temperature regulation methods, making them prone to fatigue, which leads to reduced cable strength or increased brittleness and reduced cable service life. Summary of the Invention

[0004] This invention proposes a cross-linked polyethylene insulated cable with temperature regulation function to solve the problem that in the prior art, cables rely solely on the cable material to resist temperature changes, lacking temperature regulation means and thus reducing the cable's service life.

[0005] The technical solution of the present invention is as follows: A cross-linked polyethylene insulated cable with temperature regulation function, comprising a cable segment, the cable segment comprising a conductor, an insulation layer, an insulating sleeve, and an outer sheath, the insulation layer wrapping around the outside of the conductor, and a filler disposed between the insulating sleeve and the insulation layer, further comprising:

[0006] An insulation layer, which wraps around the outside of the isolation sleeve, and an outer sheath is included outside the insulation layer;

[0007] A connector, disposed at both ends of the cable segment for electrical connection of the two cable segments, the connector comprising:

[0008] The cable segment has two connectors, which are fixedly connected to both ends of the cable segment.

[0009] A plug, which is fixedly mounted on one of the connectors, and is electrically connected to the conductor;

[0010] A socket, which is fixedly mounted on another connector, is electrically connected to the conductor, and has a socket that matches the plug;

[0011] The fastener, used to secure the connector, includes:

[0012] A fixing ring, which is a splicing mechanism, is detachably connected to the outside of two closely fitted connecting seats;

[0013] A fixing rod is fixedly connected to the inner side of the fixing ring, and a fixing hole matching the fixing rod is provided on the connecting seat;

[0014] A temperature regulating tube is disposed inside the isolation sleeve, and a filler is provided between the temperature regulating tube and the isolation sleeve. The insulation layer has a hollow structure, and the temperature regulating tube and the insulation layer are connected.

[0015] Temperature regulating mechanism, wherein the temperature regulating mechanism is used to regulate the temperature of the gas input into the insulation layer and the temperature regulating pipe, the temperature regulating mechanism comprising:

[0016] Fan;

[0017] A temperature control chamber, wherein a temperature controller is installed inside the temperature control chamber, the air outlet of the fan is connected to the temperature control chamber, and the temperature control chamber is connected to the insulation layer.

[0018] To achieve communication between the temperature control chamber and the insulation layer, the fixing ring is connected to an air inlet pipe, the air inlet pipe is detachably connected to a plug, the fixing rod has a hollow structure, the insulation layer is connected to a connecting pipe, the connecting seat has a receiving groove that matches the connecting pipe, and the fixing ring is connected to the connecting pipe through the fixing rod.

[0019] Preferably, the fixing ring includes two connecting half-rings, which are detachably connected by bolts, and a sealing ring is fixedly connected to the end of each connecting half-ring.

[0020] To improve the strength of the insulation layer, multiple support plates are fixedly connected inside the insulation layer, and through holes are provided on the support plates.

[0021] The working principle and beneficial effects of this invention are as follows:

[0022] In this invention, the air temperature inside the temperature control box is regulated by a thermostat, and the regulated air is sent into the insulation layer and temperature control pipe by a fan to regulate the temperature inside the cable, so that the cable is in a relatively stable temperature environment, reducing the impact of temperature changes on the cable strength and ensuring the service life of the cable. When the cable is damaged, the cable section can be easily disassembled and reassembled through the connector and fixing ring, and the specific damaged location can be replaced, reducing the cable usage cost, especially the replacement cost. Attached Figure Description

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of multiple cable segments connected according to the present invention;

[0026] Figure 3 This is a schematic diagram of the planar structure of the cross-section of the cable segment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure connecting the two cable segments of the present invention;

[0028] Figure 5 This is a partially sectional, exploded structural diagram of the cable segment and connector of the present invention.

[0029] Figure 6 This is an exploded structural diagram of the cable segment and connector of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the connecting tube, connecting seat and plug of the present invention;

[0031] Figure 8 This is a schematic diagram of the connecting pipe, connecting seat, and socket of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of the air intake pipe, the plug, and the fixing component of the present invention;

[0033] Figure 10 This is a schematic diagram of the structure of the intake pipe, plug, connector and fixing component of the present invention;

[0034] Figure 11 For the present invention Figure 6 A magnified schematic diagram of the structure at point A in the middle.

[0035] In the picture:

[0036] 1. Insulation layer; 2. Support plate; 3. Temperature regulating pipe; 4. Connecting pipe; 5. Air supply pipe; 6. Air inlet pipe; 7. Sealing pipe; 8. Connecting pipe;

[0037] 101. Conductor; 102. Insulating layer; 103. Isolating sleeve; 104. Outer sheath; 105. Filler;

[0038] 201. Connector; 202. Plug; 203. Socket;

[0039] 301. Fixing rod; 302. Connecting half ring; 303. Sealing ring; 304. Connecting plate; 305. Bolt;

[0040] 401. Fan; 402. Temperature control box; 403. Thermostat. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0042] like Figures 1 to 11 As shown, this embodiment proposes a cross-linked polyethylene insulated cable with temperature regulation function, including a cable segment. The cable segment includes a conductor 101, an insulation layer 102, an isolation sleeve 103, and an outer sheath 104. Multiple conductors 101 and multiple insulation layers 102 are provided, and the conductors 101 and insulation layers 102 correspond one-to-one. The insulation layer 102 wraps around the outside of the conductor 101. A filler 105 is provided between the isolation sleeve 103 and the insulation layer 102. The cable also includes an insulation layer 1, a connector, a fixing member, a temperature regulating pipe 3, and a temperature regulating mechanism.

[0043] like Figure 3 and Figure 11 As shown, the insulation layer 1 is wrapped around the outside of the isolation sleeve 103, and the outer sheath 104 is included outside the insulation layer 1. The insulation layer 1 has a hollow structure. To improve the strength of the insulation layer 1, multiple support plates 2 are fixedly connected inside the insulation layer 1. The support plates 2 have through holes to supply constant temperature air into the interior of the insulation layer 1, which insulates the inside of the cable and the outer sheath 104, reduces cable fatigue and deformation caused by external temperature changes, and ensures the service life of the cable. The support plates 2 support the insulation layer 1 and the outer sheath 104 to ensure the roundness of the cable.

[0044] like Figures 5 to 8As shown, connectors are installed at both ends of a cable segment for electrical connection between two cable segments. The connectors include a connector 201, a plug 202, and a socket 203. Two connectors 201 are fixedly connected to both ends of the cable segment. The plug 202 is fixedly installed on one connector 201 and electrically connected to conductor 101. The socket 203 is fixedly installed on the other connector 201 and electrically connected to conductor 101. The socket 203 has a matching socket for the plug 202. The two cable segments are then connected, with the plug 202 and socket 203 interlocked. The plug 202 and socket 203 are made of conductive metal, while the connector 201 is made of insulating material. The plug 202 and socket 203 contact both ends of conductor 101, enabling electrical connection between multiple cable segments and allowing current to pass through multiple conductors 101. The plug 202 is inserted into the socket, and the two connectors 201 are tightly fitted together, sealing and protecting the connection point.

[0045] like Figures 9 to 10 As shown, the fastener is used to fix the connector. The fastener includes a fixing ring and a fixing rod 301. The fixing ring is a splicing mechanism and is detachably connected to the outside of two closely fitted connecting seats 201. The fixing rod 301 is fixedly connected to the inside of the fixing ring. The connecting seats 201 have fixing holes that match the fixing rod 301. The fixing ring includes two connecting half-rings 302, which are detachably connected by bolts 305. A sealing ring 303 is fixedly connected to the end of the connecting half-ring 302. A connecting plate 304 is fixedly connected to the end of the connecting plate 304 ring. The connecting plate 304 has a connecting hole for the bolts 305 to pass through. The two connecting half-rings 302 can be spliced ​​into a circular fixing ring by bolts 305. The fixing rod 301 is inserted into the fixing hole to stably connect the two connecting seats 201 and ensure the stability of the connection between the two cable segments.

[0046] like Figures 3 to 5 As shown, the temperature regulating tube 3 is installed inside the isolation sleeve 103, and a filler 105 is installed between the temperature regulating tube 3 and the isolation sleeve 103. The insulation layer 1 has a hollow structure. The temperature regulating tube 3 and the insulation layer 1 are connected. Multiple temperature regulating tubes 3 are installed and connected to each other through a connecting pipe 4. The temperature regulating tube 3 is connected to the insulation layer 1 through an air supply pipe 5. The constant temperature air in the insulation layer 1 can enter the interior of multiple temperature regulating tubes 3 to regulate the temperature of the filler 105, the insulation layer 102, and the conductor 101, that is, to regulate the internal temperature of the cable and ensure the overall temperature stability of the cable.

[0047] like Figure 1As shown, the temperature control mechanism is used to regulate the temperature of the gas entering the insulation layer 1 and the temperature control pipe 3. The temperature control mechanism includes a fan 401 and a temperature control box 402. A temperature controller 403 is installed inside the temperature control box 402. The air outlet of the fan 401 is connected to the temperature control box 402. The temperature control box 402 is connected to the insulation layer 1. A temperature sensor can be installed inside the filling 105 to monitor the temperature inside the cable. When the temperature is lower or higher than the set temperature, the temperature controller 403 and the fan 401 are turned on. The fan 401 sends air into the temperature control box 402, and the temperature controller 403 regulates the temperature of the air inside the temperature control box 402. The constant temperature air is blown into the insulation layer 1 and the temperature control pipe 3. The temperature inside the protective sleeve, that is, the temperature at the conductor 101, is regulated by the temperature control pipe 3. The insulation layer 1 insulates the cable, and at the same time, the temperature of the outer sheath 104 is regulated, so that the cable as a whole is in a relatively stable temperature environment, reducing the damage to the cable caused by temperature changes.

[0048] To connect the temperature control chamber 402 and the insulation layer 1, an air inlet pipe 6 is connected to the fixing ring. The air inlet pipe 6 is detachably connected to a plug 7. The fixing rod 301 has a hollow structure. A connecting pipe 8 is connected to the insulation layer 1. A receiving groove matching the connecting pipe 8 is provided on the connecting seat 201. The fixing ring connects to the connecting pipe 8 via the fixing rod 301, connecting the temperature control chamber 402 and the air inlet pipe 6. Temperature-regulated air from inside the temperature control chamber 402 is sent into the interior of the fixing ring through the air inlet pipe 6, and then into the interior of the connecting pipe 8 and the insulation layer 1 through the fixing rod 301, and finally through the air supply pipe. 5 and connecting pipe 4 allow air to fill the insulation layer 1 and temperature regulating pipe 3, thereby regulating the temperature of the cable. After connecting multiple cable segments, multiple insulation layers 1 are connected through connecting pipe 8. One air inlet pipe 6 can be connected to the temperature regulating box 402. The remaining air inlet pipes 6 are sealed by sealing pipe 7 to prevent air leakage and the entry of outside air. An air inlet pipe 6 can also be opened on the side away from the temperature regulating box 402, so that constant temperature air fills the insulation layer 1 and temperature regulating pipe 3 and then exits from the air inlet pipe 6, ensuring the circulation of constant temperature air and further improving the temperature regulation efficiency of the cable.

[0049] The working principle or usage process of this cross-linked polyethylene insulated cable with temperature regulation function is as follows:

[0050] Select an appropriate number of cable segments according to the usage requirements, insert the plug 202 into the socket to connect two adjacent cable segments, insert the fixing rod 301 into the fixing hole to make the two connecting half rings 302 fit together, and use bolts 305 to splice the two connecting half rings 302 into a whole ring and fit it on the outside of the two connecting seats 201 to connect the two connecting seats 201.

[0051] One of the air inlet pipes 6 is connected to the temperature control box 402. The temperature sensor monitors the temperature inside the cable. When the temperature is higher or lower than the set temperature, the temperature controller 403 is controlled to heat or cool the air inside the temperature control box 402. The fan 401 blows the temperature-controlled air into the interior of the connecting half ring 302. The air is then sent into the interior of the insulation layer 1 through the fixing rod 301 and the connecting pipe 8. The air enters the temperature control pipe 3 through the air supply pipe 5 and the connecting pipe 4, so that the cable is in a relatively stable temperature environment and the fatigue damage caused by temperature changes is reduced.

[0052] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cross-linked polyethylene insulated cable with temperature regulation function, comprising a cable segment, the cable segment including a conductor (101), an insulation layer (102), an insulating sleeve (103), and an outer sheath (104), the insulation layer (102) wrapping around the conductor (101), and a filler (105) disposed between the insulating sleeve (103) and the insulation layer (102), characterized in that, Also includes: The insulation layer (1) is wrapped around the outside of the isolation sleeve (103), and the outer sheath (104) is included outside the insulation layer (1); A connector, disposed at both ends of the cable segment for electrical connection of the two cable segments, the connector comprising: Connector (201), two connectors (201) are provided, and the two connectors (201) are fixedly connected to both ends of the cable segment; A plug (202) is fixedly mounted on one of the connectors (201), and the plug (202) is electrically connected to the conductor (101); A socket (203) is fixedly installed on another connector (201). The socket (203) is electrically connected to the conductor (101). The socket (203) has a socket hole that matches the plug (202). The fastener, used to secure the connector, includes: A fixing ring, which is a splicing mechanism, is detachably connected to the outside of the two closely fitted connecting seats (201); A fixing rod (301) is fixedly connected to the inner side of the fixing ring, and a fixing hole matching the fixing rod (301) is provided on the connecting seat (201); Temperature regulating tube (3), the temperature regulating tube (3) is disposed inside the isolation sleeve (103), a filler (105) is disposed between the temperature regulating tube (3) and the isolation sleeve (103), the insulation layer (1) is a hollow structure, and the temperature regulating tube (3) and the insulation layer (1) are connected; A temperature control mechanism is used to regulate the temperature of the gas input into the insulation layer (1) and the temperature control pipe (3). The temperature control mechanism includes: Fan (401); Temperature control box (402), a temperature controller (403) is installed inside the temperature control box (402), the air outlet of the fan (401) is connected to the temperature control box (402), and the temperature control box (402) is connected to the insulation layer (1); The fixing ring is connected to the air inlet pipe (6), the air inlet pipe (6) is detachably connected to the plug (7), the fixing rod (301) is a hollow structure, the insulation layer (1) is connected to the connecting pipe (8), the connecting seat (201) is provided with a receiving groove that matches the connecting pipe (8), and the fixing ring is connected to the connecting pipe (8) through the fixing rod (301).

2. The cross-linked polyethylene insulated cable with temperature regulation function according to claim 1, characterized in that, The fixing ring includes two connecting half-rings (302), which are detachably connected by bolts (305).

3. A cross-linked polyethylene insulated cable with temperature regulation function according to claim 2, characterized in that, A sealing ring (303) is fixedly connected to the end of the connecting half ring (302).

4. A cross-linked polyethylene insulated cable with temperature regulation function according to claim 3, characterized in that, The insulation layer (1) is internally fixedly connected to multiple support plates (2), and the support plates (2) have through holes.

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