Flexible insulated tubing and method of installing same

Abstract

The present application relates to the technical field of tube lugs, in particular to a flexible insulated tube lug and a mounting method thereof, which comprises a split fan-shaped conductor and an insulated tube sleeved on the conductor, the insulated tube is provided with a tube lug terminal positioning ring, the tube lug terminal positioning ring comprises a blocking part and an insertion part, the insertion part is inserted into the insulated tube, the blocking part is in contact with the corresponding end face of the prefabricated tube lug terminal, the other side face of the blocking part is fixedly connected with a conductor terminal, the conductor is inserted into the conductor terminal after passing through the tube lug terminal positioning ring and is clamped by the conductor terminal. The insulating body and the conductor of the present application are assembled and mounted, the insulating body and the conductor can be supplied in sufficient quantity according to the contract, meanwhile, the flexible insulated tube lug does not need to be measured, the conductor can be cut to the required length, then the head insulated tube is sleeved, the installation is convenient, one or two installers can complete the installation, the product can be disassembled and maintained, can be recycled and reused, and the intermediate joints are reduced.

Description

Technical Field

[0001] This invention belongs to the field of tube nut technology, specifically a flexible insulating tube nut and its installation method. Background Technology

[0002] Tubular busbars, or simply tubular busbars, are busbar products that use copper or aluminum alloy tubing as conductors and are externally insulated. Currently available tubular busbars are rigid tubular busbars.

[0003] Traditional rigid conduit headers require on-site measurement, design, and production. On-site measurement and installation require more than 6 people, and the round-trip travel expenses for company personnel to the user's site are at least between 10,000 and 20,000 yuan (excluding food and accommodation). Rigid conduit headers are not flexible to install, and it is difficult to adjust for deviations. If the product has quality problems, it cannot be used. If the route is long and there are many intermediate joints in the conduit header, and the installation quality requirements of the intermediate joints are high, the cost of each additional set of intermediate joints will increase by about 10,000 yuan. Rigid conduit headers are heavy and are easy to injure people during installation. If the measurement is wrong, the product will be scrapped and cannot be recycled. Summary of the Invention

[0004] This invention provides a flexible insulating tube nut to overcome the deficiencies in the prior art.

[0005] This invention is achieved through the following technical solution:

[0006] A flexible insulating tube includes a segmented fan-shaped conductor and an insulating tube sleeved on the conductor. The opposite end of the insulating tube is provided with a tube terminal positioning ring. The tube terminal positioning ring includes a blocking part and an insertion part that are fixedly connected. The insertion part is inserted into the insulating tube and the outer annular surface of the insertion part contacts and cooperates with the inner wall of the insulating tube. The corresponding surface of the blocking part contacts and cooperates with the corresponding end face of the prefabricated tube terminal. A conductor terminal is fixedly connected to the other side of the blocking part. After the conductor passes through the tube terminal positioning ring, it is inserted into the conductor terminal and clamped by the conductor terminal.

[0007] In this application, the insulating tube and conductor are assembled. During assembly, the conductor is inserted into the insulating tube, and then the insertion part of the tube end positioning ring is inserted into the insulating tube, thereby realizing the cooperation between the insulating tube and the conductor, making the installation more flexible. At the same time, after the conductor passes through the tube end positioning ring, it is inserted into the conductor terminal and clamped by the conductor terminal. It is possible to pull the conductor through the conductor terminal, thereby adjusting the conductor within the insulating tube. This makes adjustment more convenient when there is deviation, as it can be achieved by pulling the conductor terminal. The conductor is a segmented sector-shaped conductor, which is convenient for installation, bending, and cutting.

[0008] Preferably, the conductor is coaxially fitted with a central ring, the outer annular surface of which contacts and fits against the inner wall of the insulating tube. The central ring ensures the conductor is centered within the insulating tube, preventing conductor eccentricity, and also provides a pressing effect on the conductor.

[0009] Preferably, the insulating tube is fitted inside the metal shielding layer, which in turn is fitted inside the heat-shrink tubing. The metal shielding layer primarily serves to ground and ensure equipotential bonding, while the heat-shrink tubing protects both the metal shielding layer and the internal insulating tube.

[0010] Preferably, the heat shrink tubing is fitted with prefabricated tube terminals on both sides. Each prefabricated tube terminal includes outwardly extending tendrils fixed along its length. The prefabricated tube terminals prevent electric field stress concentration at the tube terminal from causing busbar breakdown.

[0011] A method for installing a flexible insulating tube nut includes the following steps;

[0012] (1) If there are supporting components at the user's site, a flexible pipe nut bracket is installed on the supporting components by welding, so that the pipe nut can be placed on the bracket.

[0013] (2) After the bracket is installed, assemble the flexible tube clamp base on the frame to facilitate the placement of the tube on the base.

[0014] (3) The traction motor is fixed on the support near the end of the connecting equipment.

[0015] (4) Install several rolling bearings evenly on the bracket according to the site conditions. The bearing spacing is ≤800mm to facilitate the sliding of the insulating tube on it (a crane can also be used to lift the insulating tube onto the bracket, but a crane cannot be used in the indoor section).

[0016] (5) Pull the traction rope from the traction motor and place it on the bearing. At the same time, tie one end of the insulating tube with the traction rope, start the traction motor, pull the insulating tube onto the bearing, and pull the insulating tube onto the frame.

[0017] (6) Once the insulating tube is mounted, move it onto the clamp base and secure it with the clamp to facilitate conductor entry. Place rubber pads under the clamps to prevent damage to the insulating tube.

[0018] (7) The segmented sector conductors are fixed inside the central ring. Twisting the central ring can clamp the conductor. The central rings are distributed and fixed on the conductors with a spacing of ≤400mm to prevent the conductor from being eccentric. A single conductor is 6m long and several need to be assembled for use. (This step can be assembled separately, but the pipe clamps must be assembled uniformly before construction).

[0019] (8) After the center ring is fixed, apply lubricating powder or silicone grease to the center ring to prevent damage to the inner shielding layer of the insulating tube when the center ring rolls or slides in the insulating tube body, and reduce resistance.

[0020] (9) The traction rope is tied to the remote-controlled intelligent ball. The intelligent ball is placed at the end of the insulating tube. The ball rolls from one end of the insulating tube to the other end, so that the traction line passes through the insulating tube. It is simple, convenient and practical.

[0021] (10) The traction rope is tied to the conductor and the center ring. The end of the conductor enters the insulating tube and is wrapped with rubber and coated with lubricating powder or silicone grease to reduce resistance.

[0022] (11) Start the traction motor and slowly feed the conductor into the insulating tube. If a single 6-meter conductor is not enough, use conductor welding technology to extend the conductor. The welding point must be polished smooth. Repeat step 7. After completion, continue to pull the conductor until the installation is complete.

[0023] (12) Loosen the fastening clamp on the female tube.

[0024] (13) After the insulating tube and conductor are assembled, adjust the flexible tube path according to the user's requirements, install the tube terminal positioning ring, put the positioning ring on the conductor end, push the positioning ring against the insulating tube end, and press it together with the conductor. Repeat this operation on the other end, without pressing.

[0025] (14) Start the motor and slowly pull the conductor. The angle of the bend can be adjusted during the pulling process to ensure aesthetics. Finally, fix it with the clamp and crimp the conductor terminal. Next, process the end of the tube and install the tube terminal. Connect the equipment.

[0026] The beneficial effects of this invention are as follows: The insulation body and conductor of this application adopt an assembly-type installation process. The insulation body and conductor can be supplied in sufficient quantities according to the contract. At the same time, the flexible insulation tube does not require measurement. The required length of conductor can be cut to the required length, and then the head insulation tube is put on. The installation is convenient and only one or two installers are needed. The product can be disassembled for maintenance, can be recycled and reused, and reduces the use of intermediate joints. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the positioning retaining ring structure of the main pipe terminal;

[0030] Figure 3 This is a schematic diagram of the conductor terminal structure;

[0031] Figure 4 This is a schematic diagram of the installation structure of the present invention.

[0032] As shown in the figure:

[0033] 1. Conductor, 2. Insulating tube, 3. Center ring, 4. Prefabricated tube terminal, 5. Tube terminal positioning ring, 6. Conductor terminal, 7. Metal shielding layer, 8. Heat shrink tubing sleeve, 9. Clamp, 10. Bracket. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] A flexible insulating tube nut and its installation method, such as Figure 1 - As shown in Figure 4. It includes a segmented, fan-shaped conductor 1 and an insulating tube 2 fitted onto the conductor 1. The conductor 1 is a segmented, fan-shaped conductor 1, which facilitates installation, bending, and cutting. The opposite end of the insulating tube 2 is provided with a tube terminal positioning ring 5. The tube terminal positioning ring 5 includes a fixedly connected blocking part and an insertion part. The insertion part is inserted into the insulating tube 2, and its outer annular surface contacts and engages with the inner wall of the insulating tube 2. The corresponding surface of the blocking part contacts and engages with the corresponding end face of the prefabricated tube terminal 4. A conductor terminal 6 is fixedly connected to the other side of the blocking part. After the conductor 1 passes through the tube terminal positioning ring 5, it is inserted into the conductor terminal 6 and clamped by the conductor terminal 6.

[0036] In this application, the insulating tube 2 and the conductor 1 are assembled. During assembly, the conductor 1 is inserted into the insulating tube 2, and then the insertion part of the tube end positioning ring 5 is inserted into the insulating tube 2, thereby realizing the cooperation between the insulating tube 2 and the conductor 1, making the installation more flexible. At the same time, after the conductor 1 passes through the tube end positioning ring 5, it is inserted into the conductor terminal 6 and clamped by the conductor terminal 6. It is possible to pull the conductor 1 through the conductor terminal 6, thereby adjusting the conductor 1 in the insulating tube 2. In case of deviation, the adjustment is more convenient, which can be achieved by pulling the conductor terminal 6.

[0037] A central ring 3 is coaxially fitted onto conductor 1, and the outer annular surface of the central ring 3 contacts and fits against the inner wall of the insulating tube 2. The central ring 3 ensures that conductor 1 is centered in the insulating tube 2, prevents conductor 1 from being eccentric, and also provides a pressing force on conductor 1.

[0038] The insulating tube 2 is fitted inside the metal shielding layer 7, which in turn is fitted inside the heat-shrink tubing 8. The main function of the metal shielding layer 7 is to provide grounding and equipotential bonding to ensure safety, while the heat-shrink tubing 8 protects both the metal shielding layer 7 and the internal insulating tube 2.

[0039] The heat shrink tubing is fitted with prefabricated tube terminals 4 on both sides. The prefabricated tube terminals include tentacles that are fixedly installed along their length and extend outward. The prefabricated tube terminals 4 can prevent electric field stress concentration at the tube terminal from breaking down the busbar.

[0040] A method for installing a flexible insulating tube 2 includes the following steps;

[0041] (1) If there are supporting components at the user's site, the flexible pipe nut bracket 10 is installed on the supporting components by welding, so that the pipe nut can be placed on the bracket 10.

[0042] (2) After the bracket 10 is installed, assemble the flexible tube clamp 9 base to make it easy to place the tube on the base.

[0043] (3) The traction motor is fixed on the support near the end of the connecting equipment.

[0044] (4) Install several rolling bearings evenly on the bracket 10 according to the site conditions. The bearing spacing is ≤800mm to facilitate the sliding of the insulating tube 2 on it (a crane can also be used to lift the insulating tube 2 onto the bracket 10, but a crane cannot be used in the indoor part).

[0045] (5) Pull the traction rope from the traction motor and place it on the bearing. At the same time, tie one end of the insulating tube 2 with the traction rope, start the traction motor, pull the insulating tube 2 onto the bearing, and pull the insulating tube 2 onto the frame.

[0046] (6) After the insulating tube 2 is placed on the rack, move the insulating tube 2 onto the base of the clamp 9 and secure it with the clamp 9 to facilitate the entry of the conductor 1. The clamp 9 is padded with a rubber pad to prevent damage to the insulating tube 2.

[0047] (7) The segmented sector conductor 1 is fixed inside the central ring 3. Twisting the central ring 3 can clamp the conductor 1. The central rings 3 are distributed and fixed on the conductor 1 with a spacing of ≤400mm to prevent the conductor 1 from being eccentric. The length of a single conductor 1 is 6m. Several conductors need to be assembled for use. (This step can be assembled separately. Before construction, the pipe clamp 9 should also be assembled uniformly.)

[0048] (8) After the center ring 3 is fixed, apply lubricating powder or silicone grease to the center ring 3 to prevent damage to the inner shield layer of the insulating tube 2 when the center ring 3 rolls or slides in the body of the insulating tube 2, and reduce resistance.

[0049] (9) The traction rope is tied to the remote-controlled intelligent ball. The intelligent ball is placed at the end of the insulating tube 2. The ball rolls from one end of the insulating tube 2 to the other end, so that the traction line passes through the insulating tube 2. It is simple, convenient and practical.

[0050] (10) The traction rope is tied to the conductor 1 and the central ring 3. The end of the conductor 1 enters the insulating tube 2 and is wrapped with rubber and coated with lubricating powder or silicone grease to reduce resistance.

[0051] (11) Start the traction motor and slowly insert conductor 1 into the insulating tube 2. If a single 6-meter conductor 1 is not enough, use conductor 1 welding technology to extend conductor 1. The welding point must be polished smooth. Repeat step 7. After completion, continue to pull conductor 1 until the installation is complete.

[0052] (12) Loosen the fastening clamp 9.

[0053] (13) After the insulating tube 2 and conductor 1 are assembled, adjust the flexible tube path according to the user's requirements, install the tube terminal positioning ring 5, put the positioning ring on the end of conductor 1, push the positioning ring against the end of insulating tube 2, and press it together with conductor 1. Repeat this operation on the other end, without pressing.

[0054] (14) Start the motor and slowly pull conductor 1. The angle of the bend can be adjusted during the pulling process to ensure aesthetics. Finally, fix it with clamp 9 and crimp conductor terminal 6. Next, process the end of the tube and install the tube terminal. Connect the equipment.

[0055] The beneficial effects of this invention are as follows: the insulating body and conductor 1 of this application adopt an assembly installation process, the insulating body and conductor 1 can be supplied in full according to the contract quantity, and the flexible insulating tube does not require measurement, making installation convenient. Only one or two installers are needed. The product can be disassembled for maintenance, can be recycled and reused, and reduces the use of intermediate joints.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flexible insulating tube liner, characterized in that: The device includes a segmented, fan-shaped conductor and an insulating tube fitted over the conductor. The opposite ends of the insulating tube are equipped with a tube-end positioning ring. The tube-end positioning ring includes a fixedly connected blocking part and an insertion part. The insertion part is inserted into the insulating tube, with its outer annular surface contacting the inner wall of the insulating tube. The corresponding surface of the blocking part contacts the corresponding end face of a prefabricated tube-end terminal. A conductor terminal is fixedly connected to the other side of the blocking part. The conductor passes through the tube-end positioning ring and is inserted into the conductor terminal, where it is clamped. A central ring is coaxially fitted around the conductor, with its outer annular surface contacting the inner wall of the insulating tube. The insulating tube is fitted inside a metal shielding layer, which is fitted inside a heat-shrinkable tubing. Prefabricated tube-end terminals are fitted on both sides of the heat-shrinkable tubing, each prefabricated tube-end terminal including tentacles fixedly arranged along its length and extending outwards. A method for installing a flexible insulating tube-end terminal is also provided. Includes the following steps; (1) On-site support components are set up, and flexible tube brackets are installed on the support components by welding; (2) After the bracket is installed, assemble the flexible tube clamp base onto the frame; (3) The traction motor is fixed on a bracket near the end of the connecting equipment; (4) Install several fixed rolling bearings evenly on the bracket according to the site conditions, with a bearing spacing of ≤800mm; (5) Pull the traction rope from the traction motor and place it on the bearing. At the same time, tie one end of the insulating tube with the traction rope, start the traction motor, pull the insulating tube onto the rolling bearing, and pull the insulating tube onto the frame. (6) Once the insulating tube is installed, move it onto the clamp base and secure it with the clamp to facilitate the entry of the conductor; (7) The segmented sector conductor is fixed inside the central ring. The central ring is twisted to clamp the conductor. The central rings are distributed and fixed on the conductor with a spacing of ≤400mm to prevent the conductor from deviating from its core. (8) After the center ring is fixed, apply lubricating powder or silicone grease to the center ring to prevent damage to the inner shielding layer of the insulating tube when the center ring rolls or slides in the insulating tube body, and reduce resistance; (9) The traction rope is tied to the remote-controlled intelligent ball. The intelligent ball is placed at the end of the insulating tube. The ball rolls from one end of the insulating tube to the other end, so that the traction line passes through the insulating tube. (10) The traction rope is tied to the conductor and the center ring. The end of the conductor that enters the insulating tube is wrapped with rubber and coated with lubricating powder or silicone grease to reduce resistance. (11) Start the traction motor and slowly feed the conductor into the insulating tube. If a single 6-meter conductor is not enough, use conductor welding technology to extend the conductor. The welding point needs to be polished smooth and step (7) should be repeated. After completion, continue to pull the conductor until the installation is completed. (12) Loosen the fastening clamp on the nut; (13) After the insulating tube and conductor are assembled, adjust the flexible tube path according to the user’s requirements, install the tube terminal positioning ring, put the tube terminal positioning ring on the conductor end, push the positioning ring to the end of the insulating tube and press it together with the conductor. Repeat this operation on the other end, without pressing it. (14) Start the motor and slowly pull the conductor. Adjust the angle of the bend during the pulling process to ensure aesthetics. Finally, fix the clamp, crimp the conductor terminal, process the end of the tube, install the tube terminal, and connect the equipment.

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