High-flame-retardant insulating ultrahigh-voltage flat aluminum sheath cable and processing equipment

Abstract

The invention relates to the technical field of cable production, in particular to a high-flame-retardant insulating ultrahigh-voltage flat aluminum sheath cable and processing equipment, and the cable comprises a conductor shielding layer, an insulating shielding layer and a semi-conductive buffer water-blocking tape which sequentially wrap the outer layer of a 5 + 1 split conductor; a smooth aluminum sheath is arranged on the outer layer of the semi-conductive buffer water-blocking tape, two temperature measuring optical cables are arranged in the semi-conductive buffer water-blocking tape, when the cable works normally, one temperature measuring optical cable is in a running state, the other temperature measuring optical cable serves as a backup, and the conductor shielding layer is made of ultra-clean PP materials. And the insulation shielding layer is made of an ultra-smooth semi-conductive PP material. The temperature of the cable is detected in real time, meanwhile, the situation that the heating condition of the cable cannot be monitored due to the fact that a single temperature measuring optical cable goes wrong is prevented, and the bending capacity of the cable is enhanced. The problem of poor electrical contact is avoided, interlayer friction force is increased, the longitudinal water blocking function is improved, and capacitive discharge generated by air gaps is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of cable production, and in particular to a high flame retardant insulation ultra-high voltage flat aluminum sheathed cable and processing equipment. Background Art

[0002] The production of traditional XLPE cables is time-consuming and energy-intensive. XLPE is a thermosetting polymer with a special cross-linked network structure. The insulation layer of XLPE cables is difficult to degrade after retirement. There is also the problem of ablation of the semi-conductive buffer water-blocking tape during use.

[0003] In addition, during the production and processing of cables, a cutting machine is required to cut the cables, and the cable cutting equipment currently on the market has a simple structure and a single function. The existing cable cutting machines generate a large amount of dust and chips during the cutting process, which not only easily enter the air and cause air pollution, but also require manual cleaning by the staff later, which consumes labor.

[0004] Chinese patent announcement number CN214557005U discloses a mineral cable production and processing equipment, including a machine base and a cutting machine, the cutting machine is movably mounted on the machine base, and the equipment also includes: a processing box, the processing box is fixedly mounted on the machine base and is used as a container for the cutting machine; a dust removal actuator is used to process dust generated during the cable cutting process; and a transmission mechanism, the transmission mechanism is connected between the cutting machine and the dust removal actuator, and is used to control the dust removal actuator to move synchronously with the cutting machine.

[0005] The above scheme mainly solves the dust removal problem generated during the cable cutting process. However, since the cutting machine is fixed, the cable must stop moving in advance during the transportation process, and then the cutting machine can cut the cable normally. Otherwise, the moving cable will inevitably damage the cutting machine. Due to the influence of the cable production process, most of the outer coatings of the cables are wrapped layer by layer by an extruder. If the cable stops moving, it will cause the cable to stop moving in the extruder, and the material extruded by the extruder will accumulate, resulting in bulges on the cable. If the cable is always in a transportation state, it is necessary to make the cutting machine move synchronously with the cable. Although there are cutting devices that can move synchronously with the conveyor line in the prior art, it is impossible to achieve complete synchronization, resulting in the cut end face of the cable not being cut smoothly, which in turn leads to the need to cut part of the cable end face during subsequent use, causing unnecessary losses. Summary of the invention

[0006] In view of the above problems, a highly flame-retardant insulated ultra-high voltage flat aluminum sheathed cable and processing equipment are provided, wherein the conductor shielding layer of the cable is made of ultra-clean PP material, and the insulating shielding layer is made of ultra-smooth semi-conductive PP material, so that the cable can be used in a working environment between -30 degrees Celsius and 105 degrees Celsius for a long time, and has excellent durability, corrosion resistance and wear resistance, long service life, high transmission capacity, and can be recycled. At the same time, two temperature measuring optical cables are set in the semi-conductive buffer water-blocking tape. When the cable is working normally, only one of the two temperature measuring optical cables is working normally, and the other is used as a backup, realizing real-time detection of the cable temperature, and preventing problems with a single temperature measuring optical cable, which cannot monitor the heating of the cable.

[0007] In order to solve the problems of the prior art, the present invention provides a high flame retardant insulation ultra-high voltage flat aluminum sheathed cable, comprising a conductor shielding layer, an insulating shielding layer and a semi-conductive buffer water-blocking tape wrapped in sequence on the outer layer of a 5+1 split conductor; a smooth aluminum sheath is arranged on the outer layer of the semi-conductive buffer water-blocking tape, and two temperature measuring optical cables are arranged in the semi-conductive buffer water-blocking tape. When the cable is working normally, one of the temperature measuring optical cables is in operation and the other is used as a backup. The conductor shielding layer is made of ultra-clean PP material, and the insulating shielding layer is made of ultra-smooth semi-conductive PP material.

[0008] The present invention also relates to a processing device for a high-flame-retardant insulation and ultra-high-voltage flat aluminum sheathed cable, which is used to process a high-flame-retardant insulation and ultra-high-voltage flat aluminum sheathed cable, and includes a cutting unit for cutting the cable in transit; the cutting unit includes a clamping unit arranged on a conveying path of the cable, the clamping unit includes a first clamping part and a second clamping part arranged along the cable conveying direction, the first clamping part and the second clamping part are respectively provided with two clamping claws that can approach or move away from each other in a horizontal direction, after the first clamping part and the second clamping part clamp the cable in transit, the clamping unit moves synchronously with the cable, and the first clamping part and the second clamping part have a processing gap in the cable conveying direction, a cutting machine is arranged to move in the vertical direction in the processing gap, the cutting machine moves synchronously with the clamping unit, and the clamping unit has no driving force in the same direction when the cable is conveyed.

[0009] Preferably, a traction unit is provided on one side of the clamping unit, and the traction unit drives the clamping unit to move and reset in the opposite direction of the cable conveying after the clamping unit releases the cable.

[0010] Preferably, the traction unit includes a weight that moves in a vertical direction, a first traction rope is arranged between the weight and the clamping unit, two ends of the first traction rope respectively fix the weight and the clamping unit together, a receiving wheel is rotatably arranged below the first traction rope, and the first traction rope is wound around the receiving wheel.

[0011] Preferably, a winder is provided above the weight, a second traction rope is wound inside the winder, the lower end of the second traction rope extends to the upper part of the weight and is fixedly connected to the weight, and the winder completely winds up the second traction rope before the clamping unit contacts the cable.

[0012] Preferably, the cutting unit also includes a deceleration unit, which includes a deceleration rod arranged on the clamping unit, and a deceleration sleeve is horizontally arranged at the front end in the moving direction when the clamping unit is reset. The deceleration sleeve is slidably matched with the deceleration rod, and the inner ring diameter of the deceleration sleeve is the same as the diameter of the deceleration rod. A contraction cavity is provided in the deceleration sleeve for overflowing the air flow rate in the deceleration sleeve.

[0013] Preferably, an air vent is provided on the reduction sleeve on the side of the contraction chamber facing the reduction rod.

[0014] Preferably, an elastic membrane is provided on the inner wall of the reduction sleeve at the contraction cavity, and an expansion cavity is present between the elastic membrane and the inner wall of the reduction sleeve. When the expansion cavity is filled with water and expands, a contraction cavity is formed.

[0015] Preferably, the processing equipment further comprises a conveying unit for conveying the cable, the conveying unit comprises a plurality of conveying wheels arranged along the conveying direction of the cable, and the conveying wheels descend in a vertical direction and disengage from the cable when the cutting unit approaches.

[0016] Preferably, a reflective plate is arranged at the front end of each conveying wheel, and a photoelectric sensor for monitoring the position of the reflective plate is horizontally arranged on the clamping unit.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The conductor shielding layer of the cable of the present invention is made of ultra-clean PP material, and the insulating shielding layer is made of ultra-smooth semi-conductive PP material, so that the cable can be used in a working environment between -30 degrees Celsius and 105 degrees Celsius for a long time, and has excellent durability, corrosion resistance and wear resistance, long service life, high transmission capacity, and can be recycled. At the same time, two temperature measuring optical cables are set in the semi-conductive buffer water-blocking tape. When the cable is working normally, only one of the two temperature measuring optical cables is working normally, and the other is used as a backup, realizing real-time detection of the cable temperature, and preventing problems with a single temperature measuring optical cable, and failing to monitor the heating of the cable.

[0018] 2. Replace the traditional corrugated aluminum sheath with a smooth aluminum sheath to enhance the bending ability of the cable. Avoid the problem of poor electrical contact, reduce the diameter of the cable, increase the friction between layers, improve the longitudinal water blocking function, and avoid capacitive discharge caused by the air gap. It is suitable for the application of ultra-high voltage large-section cables in high-drop environments. Compared with corrugated aluminum sheaths, it effectively alleviates the problem of buffer layer ablation. It has a compact structure, low thermal resistance, good heat dissipation, and a current carrying capacity that is more than 15% higher than that of the same specification corrugated aluminum sheath cable.

[0019] 3. By setting the first clamping part and the second clamping part, and the clamping unit has no driving force in the same direction of cable transportation, the clamping unit can only move by clamping the cable, thus ensuring that the clamping unit can move completely synchronously with the cable. Before the cable is cut, the first clamping part and the second clamping part first clamp the cable to form the first clamping position and the second clamping position, and then the cutter delays for a few seconds before cutting, ensuring that when the cutter cuts the cable, the cutter and the cable are relatively stationary in the direction of cable transportation, which not only avoids damage to the cutter during the cutting process, but also ensures the flatness of the cable end during cutting. At the same time, since the cable does not need to stop being transported during the cutting process, the processing efficiency of the cable is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a high flame retardant insulation ultra-high voltage flat aluminum sheathed cable of the present invention.

[0021] Figure 2 It is a three-dimensional schematic diagram of processing equipment for high flame retardant insulation and ultra-high voltage flat aluminum sheathed cable of the present invention.

[0022] Figure 3 The invention relates to a processing equipment for high flame retardant insulation ultra-high voltage flat aluminum sheathed cable. Figure 2 A local enlarged schematic diagram of point A in the middle.

[0023] Figure 4 The invention relates to a processing equipment for high flame retardant insulation ultra-high voltage flat aluminum sheathed cable. Figure 2 A local enlarged schematic diagram of point B in the middle.

[0024] Figure 5 The invention relates to a processing equipment for high flame retardant insulation ultra-high voltage flat aluminum sheathed cable. Figure 2 A partial enlarged schematic diagram of point C in the middle.

[0025] Figure 6 This is a cutaway stereoscopic diagram of a processing device for a high flame retardant insulation ultra-high voltage flat aluminum sheathed cable according to the present invention. Figure 1 .

[0026] Figure 7 The invention relates to a processing equipment for high flame retardant insulation ultra-high voltage flat aluminum sheathed cable. Figure 6 A partial enlarged schematic diagram of point D in the middle.

[0027] Figure 8 This is a cutaway stereoscopic diagram of a processing device for a high flame retardant insulation ultra-high voltage flat aluminum sheathed cable according to the present invention. Figure 2 .

[0028] Fig. 9 The invention relates to a processing equipment for high flame retardant insulation ultra-high voltage flat aluminum sheathed cable. Figure 8 A partial enlarged schematic diagram of point E in the middle.

[0029] Fig.10 It is a three-dimensional schematic diagram of a reduction rod of a processing device for a high flame retardant insulation ultra-high voltage flat aluminum sheathed cable of the present invention being inserted into a reduction sleeve.

[0030] Fig.11 The invention discloses a cutaway stereoscopic schematic diagram of a reduction rod of a processing device for a high flame retardant insulation ultrahigh voltage flat aluminum sheathed cable when the reduction rod is inserted into a reduction sleeve.

[0031] The numbers in the figure are: 1. Cable; 11. 5+1 split conductor; 12. Conductor shielding layer; 13. Insulation layer; 14. Insulation shielding layer; 15. Semi-conductive buffer water-blocking tape; 16. Smooth aluminum sheath; 17. Corrosion-resistant hot-melt adhesive layer; 18. High flame-retardant PE outer sheath; 19. Temperature measuring optical cable; 2. Cutting unit; 21. Clamping unit; 211. Clamping claw; 22. Cutting machine; 23. Traction unit; 231. First traction rope; 232. Weight; 233. Receiving wheel; 24. Winding machine; 25. Second traction rope; 26. Speed ​​reduction unit; 261. Speed ​​reduction rod; 262. Speed ​​reduction sleeve; 2621. Air vent; 263. Elastic membrane; 2631. Expansion chamber; 3. Conveying unit; 31. Conveying wheel; 32. Photoelectric sensor; 33. Reflector. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Reference Figure 1 A highly flame-retardant insulated ultra-high voltage flat aluminum sheathed cable, comprising a conductor shielding layer 12, an insulating shielding layer 14 and a semi-conductive buffer water-blocking tape 15 wrapped in sequence on the outer layer of a 5+1 split conductor 11; a smooth aluminum sheath 16 is arranged on the outer layer of the semi-conductive buffer water-blocking tape 15, and two temperature measuring optical cables 19 are arranged in the semi-conductive buffer water-blocking tape 15. When the cable 1 is working normally, one of the temperature measuring optical cables 19 is in operation, and the other temperature measuring optical cable 19 is used as a backup. The conductor shielding layer 12 is made of ultra-clean PP material, and the insulating shielding layer 14 is made of ultra-smooth semi-conductive PP material.

[0034] The existing aluminum sheathed cable 1 is provided with 5+1 split conductors 11, conductor shielding layer 12, insulating layer 13, insulating shielding layer 14, semiconductor buffer water-blocking tape, corrugated aluminum sheath, asphalt layer and high flame retardant PE outer sheath 18 in sequence from the inside to the outside. The cable 1 of the present invention is provided with 5+1 split conductors 11, conductor shielding layer 12, insulating layer 13, insulating shielding layer 14, semi-conductive buffer water-blocking tape 15, smooth aluminum sheath 16, corrosion-resistant hot-melt adhesive layer 17 and high flame retardant PE outer sheath 18 in sequence from the inside to the outside. In this way, the cable 1 can be used for a long time in a working environment between -30 degrees Celsius and 105 degrees Celsius, has excellent durability, corrosion resistance and wear resistance, long service life, high transmission capacity, and can be recycled. Two temperature measuring optical cables 19 are arranged in the semi-conductive buffer water-blocking tape 15. The temperature measuring optical cables 19 are distributed on the opposite side of the core of the cable 1 and are twisted around the conductor according to a certain pitch of 5+1. When the cable 1 is working normally, only one of the two temperature measuring optical cables 19 is working normally, and the other is used as a backup to prevent the single temperature measuring optical cable 19 from having problems and failing to monitor the heating of the cable 1. The traditional corrugated aluminum sheath is replaced with a smooth aluminum sheath 16 to enhance the bending ability of the cable 1. During production, the aluminum sheath is reduced in diameter by an extrusion wheel so that its interior is in close contact with the semi-conductive buffer water-blocking tape 15, avoiding the problem of poor electrical contact, reducing the diameter of the cable 1, increasing the interlayer friction, improving the longitudinal water blocking function, and avoiding capacitive discharge caused by the air gap. It is suitable for the application of ultra-high voltage large-section cables 1 in high-drop environments. Compared with corrugated aluminum sheaths, smooth aluminum sheaths 16 effectively alleviate the problem of buffer layer ablation, have compact structure, low thermal resistance, good heat dissipation, and the current carrying capacity is increased by more than 15% compared with the same specification corrugated aluminum sheath cable 1. The outer sheath adopts a highly flame-retardant PE sheath, which has excellent flame retardancy and can greatly reduce the occurrence of fire and the speed of fire spread.

[0035] Reference Figure 6-Figure 9 : The present invention also relates to a processing equipment for a high flame retardant insulation and ultra-high voltage flat aluminum sheathed cable, which is used to process a high flame retardant insulation and ultra-high voltage flat aluminum sheathed cable, and includes a cutting unit 2 for cutting the cable 1 being transported; the cutting unit 2 includes a clamping unit 21 arranged on the conveying path of the cable 1, and the clamping unit 21 includes a first clamping part and a second clamping part arranged along the conveying direction of the cable 1, and the first clamping part and the second clamping part are respectively provided with two clamping claws 211 that can approach or move away from each other in the horizontal direction. After the first clamping part and the second clamping part clamp the conveyed cable 1, the clamping unit 21 moves synchronously with the cable 1, and the first clamping part and the second clamping part have a processing gap in the conveying direction of the cable 1, and a cutting machine 22 is arranged to move in the vertical direction in the processing gap, and the cutting machine 22 moves synchronously with the clamping unit 21, and the clamping unit 21 has no driving force in the same direction when the cable 1 is transported.

[0036] In the production of cable 1, cable 1 needs to be cut after it is wound to the rated length, but the cable 1 needs to be stopped during cutting so that the cutting unit 2 can normally cut the cable 1. However, such cutting has a great impact on the processing efficiency. At the same time, cable 1 has continuity during processing, especially when the outer layer of cable 1 is coated, an extruder is required. If the cable 1 is stopped during cutting, the cable 1 at the extruder will have too much coating material. In order to avoid the occurrence of the above-mentioned situation, the prior art has designed a cutting unit 2 that can move synchronously with the cable 1 being transported, but the cutting unit 2 has a driving force in the same direction of the cable 1 being transported, and the driving force enables the cutting unit 2 to maintain synchronous transportation with the transportation speed of the cable 1. However, due to the slippage of the cable 1 during transportation, there is a difference between the actual transportation speed of the cable 1 and the preset movement speed of the cutting unit 2, resulting in the cutting unit 2 being unable to move completely synchronously with the cable 1, and further resulting in the cutting unit 2 being unable to cut stably during cutting, ultimately resulting in the end of the cable 1 being uneven after cutting is completed. At the same time, due to the poor stability when cutting, the cutting unit 2 is easily damaged.

[0037] In order to avoid the above situation, the cutting unit 2 is redesigned so that the cutting unit 2 can move completely synchronously with the cable 1 when cutting the cable 1, ensuring that the working environment of the cutting unit 2 is sufficiently stable when performing the cutting operation, thereby ensuring that the end of the cable 1 is sufficiently flat after cutting. The specific structure and working process of the cutting unit 2 are as follows; Firstly, the first clamping part and the second clamping part in the clamping unit 21 are in a separated state, that is, the cable 1 can pass through the clamping unit 21 during the transportation process. A winding unit is arranged at the end of the cable 1 production line, and the winding unit can monitor the winding length of the cable 1. When the winding length of the cable 1 reaches the rated length, the clamping unit 21 in the cutting unit 2 is started, and the clamping claws 211 in the first clamping part and the second clamping part approach each other and clamp the cable 1. The position of the first clamping part after clamping on the cable 1 is called the first clamping position, and the position of the second clamping part after clamping on the cable 1 is called the second clamping position. The first clamping position and the second clamping position are arranged along the conveying direction of the cable 1, and the processing gap is located between the first clamping position and the second clamping position. Then the cutting machine 22 starts to start. It is worth noting that in the first clamping position After the first clamping unit and the second clamping unit clamp the cable 1, the cutting machine 22 will not immediately descend to cut, but will delay for a few seconds before cutting. This is because the clamping claw 211 has a relative sliding situation when it just contacts the cable 1 being transported, that is, although the first clamping unit and the second clamping unit clamp the cable 1 at this time, the first clamping position and the second clamping position formed are still in a moving state on the surface of the cable 1, which makes the cutting machine 22 delay for a few seconds before cutting, ensuring that the cutting machine 22 and the transported cable 1 are in a relatively static state when the cutting machine 22 is cutting, and because the clamping unit 21 has no driving force in the same direction of the cable 1 transportation, the clamping unit 21 can move at the same speed as the cable 1 after clamping the cable 1, avoiding the situation where the conveying speed of the cutting unit 2 and the cable 1 are not synchronized. It is worth noting that the delay time of the cutting machine 22 needs to be set according to the actual processing situation, which will not be repeated here.

[0038] By setting the first clamping part and the second clamping part, and the clamping unit 21 has no driving force in the same direction of the cable 1 transportation, the clamping unit 21 can only move by clamping the cable 1, thereby ensuring that the clamping unit 21 can move completely synchronously with the cable 1. Before the cable 1 is cut, the first clamping part and the second clamping part first clamp the cable 1 and form the first clamping position and the second clamping position, and then the cutter 22 delays for a few seconds before cutting, thereby ensuring that when the cutter 22 cuts the cable 1, the cutter 22 and the cable 1 are relatively stationary in the conveying direction of the cable 1, thereby avoiding damage to the cutter 22 during the cutting process and ensuring the flatness of the end of the cable 1 during cutting. At the same time, since the cable 1 does not need to stop being transported during the cutting process, the processing efficiency of the cable 1 is also improved.

[0039] Reference Figure 2 A traction unit 23 is provided on one side of the clamping unit 21. After the clamping unit 21 releases the cable 1, the traction unit 23 drives the clamping unit 21 to move and reset in the opposite direction of the cable 1 conveyance.

[0040] Reference Figure 4 and Figure 5 The traction unit 23 includes a weight 232 that moves in a vertical direction, a first traction rope 231 is arranged between the weight 232 and the clamping unit 21, and the two ends of the first traction rope 231 respectively fix the weight 232 and the clamping unit 21, and a receiving wheel 233 is rotatably arranged below the first traction rope 231, and the first traction rope 231 is wound around the receiving wheel 233.

[0041] After the cutting machine 22 completes cutting of the cable 1, the first clamping part and the second clamping part in the clamping unit 21 simultaneously release the cable 1. At this time, the weight 232 pulls the clamping unit 21 through the first traction rope 231, so that the clamping unit 21 moves in the opposite direction of the cable 1 conveying, so that the clamping unit 21 can be smoothly reset after the cutting machine 22 completes cutting.

[0042] Reference Figure 4 : A winder 24 is arranged above the weight 232, and a second traction rope 25 is wound inside the winder 24. The lower end of the second traction rope 25 extends to the upper part of the weight 232 and is fixedly connected to the weight 232. The winder 24 completely winds up the second traction rope 25 before the clamping unit 21 contacts the cable 1.

[0043] Since the weight 232 provides a driving force for the resetting of the clamping unit 21, when the clamping unit 21 clamps the cable 1, the clamping unit 21 needs to apply a large clamping force to the cable 1 to ensure that the clamping unit 21 does not move relative to the cable 1, which may easily cause the cable 1 to be damaged due to the clamping. In order to avoid the above situation, a reel 24 and a second traction rope 25 are provided. Before the clamping unit 21 clamps the cable 1, the second traction rope 25 is reeled up by the reel 24, so that the weight 232 is lifted. In this way, the weight of the weight 232 cannot be exerted through the first traction rope 231. When the clamping unit 21 clamps the cable 1, it is not necessary to overcome the tension generated by the weight 232, which ensures that the cable 1 will not be damaged due to the clamping of the clamping unit 21. After the cutting machine 22 completes cutting of the cable 1, the clamping unit 21 loosens the cable 1, the reel 24 completely releases the second traction rope 25, and the weight 232 pulls the clamping unit 21 through the first traction rope 231, so that the clamping unit 21 is quickly reset.

[0044] Reference Fig.10 and Fig.11The cutting unit 2 also includes a deceleration unit 26, which includes a deceleration rod 261 arranged on the clamping unit 21, and a deceleration sleeve 262 is horizontally arranged at the front end of the moving direction when the clamping unit 21 is reset. The deceleration sleeve 262 is slidably matched with the deceleration rod 261, and the inner ring diameter of the deceleration sleeve 262 is the same as the diameter of the deceleration rod 261. A contraction cavity is provided in the deceleration sleeve 262 for overflowing the air flow rate in the deceleration sleeve 262.

[0045] Driven by the weight 232, the clamping unit 21 is reset at a faster speed, so the deceleration unit 26 is set to decelerate the clamping unit 21. When the deceleration rod 261 set on the clamping unit 21 has not slid into the deceleration sleeve 262, the clamping unit 21 does not decelerate. When the clamping unit 21 is about to be reset, the deceleration rod 261 slides into the deceleration sleeve 262. Since the deceleration sleeve 262 is provided with a contraction cavity that can overflow the air, when the deceleration rod 261 slides into the deceleration sleeve 262, the contraction cavity overflows the squeezed air in the deceleration sleeve 262, thereby achieving a deceleration effect.

[0046] Reference Fig.11 An air vent 2621 is provided on the reduction sleeve 262 on the side of the contraction chamber facing the reduction rod 261.

[0047] Due to the deceleration effect of the contraction chamber, when the fast-moving clamping unit 21 drives the deceleration rod 261 to insert into the deceleration sleeve 262, the air in the deceleration sleeve 262 will overflow from the contraction chamber, and the deceleration rod 261 will be quickly decelerated when entering the deceleration sleeve 262. However, this may easily cause the interface between the deceleration rod 261 and the deceleration sleeve 262 to suffer greater wear due to the vibration generated by the rapid deceleration. After long-term use, the deceleration rod 261 and the deceleration sleeve 262 may not be fully aligned, which may cause the deceleration rod 261 to directly collide with the deceleration sleeve 262 during the deceleration process. After the air vent 2621 is provided on the reduction sleeve 262, the above situation can be avoided. This is because after the air vent 2621 is provided, when the reduction rod 261 enters the reduction sleeve 262, although a contraction cavity is still provided in the reduction sleeve 262, the air squeezed by the reduction rod 261 in the reduction sleeve 262 can still be discharged through the air vent 2621, ensuring that the reduction rod 261 can slide into the reduction sleeve 262 at a normal speed. In this way, the reduction rod 261 will not suddenly decelerate when it just cooperates with the end of the reduction sleeve 262. After the reduction rod 261 slides into the reduction sleeve 262, the reduction sleeve 262 will start to decelerate when the reduction rod 261 blocks the air vent 2621.

[0048] Reference Figure 2 , Fig.10 and Fig.11An elastic membrane 263 is provided on the inner wall of the reduction sleeve 262 at the contraction cavity, and an expansion cavity 2631 is present between the elastic membrane 263 and the inner wall of the reduction sleeve 262. When the expansion cavity 2631 is filled with water and expands, a contraction cavity is formed.

[0049] On the contrary, when the expansion cavity 2631 is not expanded, the contraction cavity disappears, and the deceleration sleeve 262 no longer has a deceleration effect. Since the contraction cavity has an overflow effect, the deceleration rod 261 provided on the clamping unit 21 is located in the deceleration sleeve 262 when the clamping unit 21 is in the initial position, and the air release port 2621 is blocked by the deceleration rod 261. If the air flow at the contraction cavity cannot be changed, the clamping unit 21 will be blocked when clamping the cable 1, resulting in relative friction between the clamping unit 21 and the cable 1, and thus the clamping unit 21 cannot quickly achieve synchronous movement with the cable 1. In order to avoid the above problems, an elastic membrane 263 is provided on the inner wall of the reduction sleeve 262, and an expansion cavity 2631 is formed between the elastic membrane 263 and the reduction sleeve 262. By filling or draining water in the expansion cavity 2631, the expansion cavity 2631 is deformed, thereby controlling the formation or disappearance of the contraction cavity. When the clamping unit 21 needs to clamp the cable 1, the water in the expansion cavity 2631 is discharged, and the contraction cavity disappears, so that the overflow effect in the reduction sleeve 262 disappears, and the reduction rod 261 no longer produces a deceleration effect when it moves synchronously with the clamping unit 21. The reduction sleeve 262 is provided with an opening for the water in the expansion cavity 2631 to flow in or out.

[0050] Reference Figure 2 and Figure 3 : The processing equipment also includes a conveying unit 3 for conveying the cable 1. The conveying unit 3 includes a plurality of conveying wheels 31 arranged along the conveying direction of the cable 1. When the cutting unit 2 approaches, the conveying wheels 31 descend in the vertical direction and disengage from the cable 1.

[0051] Reference Figure 3 : A reflective plate 33 is arranged at the front end of each conveying wheel 31, and a photoelectric sensor 32 for monitoring the position of the reflective plate 33 is horizontally arranged on the clamping unit 21.

[0052] When in use, the photoelectric sensor 32 continuously emits light. When the clamping unit 21 passes the position of the reflector 33, the reflector 33 reflects the emitted light back to the photoelectric sensor 32, so that the position of the reflector 33 can be monitored, thereby ensuring that the conveying wheel 31 can descend before the cutting unit 2 approaches, making way for the moving path of the cutting unit 2. After the cutting unit 2 passes, the conveying wheel 31 rises again, ensuring the support for the cable 1 being conveyed, and avoiding the cable 1 from lacking support at the station where it passes the cutting unit 2, thereby causing the cable 1 to bend.

[0053] Working principle: First, the first clamping part and the second clamping part in the clamping unit 21 are in a separated state, that is, the cable 1 can pass through the clamping unit 21 during the transportation process. A winding unit is arranged at the end of the cable 1 production line, and the winding unit can monitor the winding length of the cable 1. When the winding length of the cable 1 reaches the rated length, the clamping unit 21 in the cutting unit 2 is started, and the clamping claws 211 in the first clamping part and the second clamping part approach each other and clamp the cable 1. The position of the first clamping part after clamping on the cable 1 is called the first clamping position, and the position of the second clamping part after clamping on the cable 1 is called the second clamping position. The first clamping position and the second clamping position are arranged along the conveying direction of the cable 1, and the processing gap is located between the first clamping position and the second clamping position. Then the cutting machine 22 starts to start. It is worth noting that in the first After the first clamping part and the second clamping part clamp the cable 1, the cutting machine 22 will not descend to cut immediately, but will delay for a few seconds before cutting. This is because the clamping jaws 211 slide relative to each other when they just come into contact with the cable 1 being transported. That is, although the first clamping part and the second clamping part clamp the cable 1 at this time, the first clamping position and the second clamping position formed are still in a moving state on the surface of the cable 1, which makes the cutting machine 22 delay for a few seconds before cutting, ensuring that the cutting machine 22 and the transported cable 1 are in a relatively static state when the cutting machine 22 is cutting, and since the clamping unit 21 has no driving force in the same direction of the cable 1 transportation, the clamping unit 21 can move at the same speed as the cable 1 after clamping the cable 1, thereby avoiding the situation where the conveying speed of the cutting unit 2 and the cable 1 are not synchronized.

[0054] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the protection scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A highly flame-retardant insulated ultra-high voltage flat aluminum sheathed cable, comprising a conductor shielding layer (12), an insulating shielding layer (14) and a semi-conductive buffer water-blocking tape (15) which are sequentially wrapped around the outer layer of a 5+1 split conductor (11); It is characterized in that A smooth aluminum sheath (16) is arranged on the outer layer of the semi-conductive buffer water-blocking tape (15), and two temperature measuring optical cables (19) are arranged in the semi-conductive buffer water-blocking tape (15). When the cable (1) is working normally, one of the temperature measuring optical cables (19) is in operation, and the other temperature measuring optical cable (19) is used as a backup. The conductor shielding layer (12) is made of ultra-clean PP material, and the insulating shielding layer (14) is made of ultra-smooth semi-conductive PP material.

2. A processing device for a high flame retardant insulation and ultra-high voltage flat aluminum sheathed cable, the device is used to process a high flame retardant insulation and ultra-high voltage flat aluminum sheathed cable as claimed in claim 1, comprising a cutting unit (2) for cutting the cable (1) in transit; It is characterized in that The cutting unit (2) comprises a clamping unit (21) arranged on a conveying path of the cable (1), the clamping unit (21) comprising a first clamping portion and a second clamping portion arranged along the conveying direction of the cable (1), the first clamping portion and the second clamping portion respectively being provided with two clamping claws (211) which can move toward or away from each other in a horizontal direction, after the first clamping portion and the second clamping portion clamp the conveying cable (1), the clamping unit (21) moves synchronously with the cable (1), and a processing gap is provided between the first clamping portion and the second clamping portion in the conveying direction of the cable (1), a cutting machine (22) is arranged in the processing gap to move in a vertical direction, the cutting machine (22) moves synchronously with the clamping unit (21), and the clamping unit (21) has no driving force in the same direction as the cable (1) when the cable (1) is conveyed.

3. The processing equipment for high flame retardant insulation ultra-high voltage flat aluminum sheathed cable according to claim 2 is characterized in that: A traction unit (23) is provided on one side of the clamping unit (21), and after the clamping unit (21) loosens the cable (1), the traction unit (23) drives the clamping unit (21) to move and reset in the opposite direction of the conveying of the cable (1).

4. The processing equipment for high flame retardant insulation ultra-high voltage flat aluminum sheathed cable according to claim 3 is characterized in that: The traction unit (23) comprises a weight (232) that moves in a vertical direction, a first traction rope (231) is provided between the weight (232) and the clamping unit (21), two ends of the first traction rope (231) respectively fixedly connect the weight (232) and the clamping unit (21), a receiving wheel (233) is rotatably provided below the first traction rope (231), and the first traction rope (231) is wound around the receiving wheel (233).

5. The processing equipment for high flame retardant insulation ultra-high voltage flat aluminum sheathed cable according to claim 4 is characterized in that: A reel (24) is provided above the weight (232), a second traction rope (25) is wound inside the reel (24), a lower end of the second traction rope (25) extends to the upper part of the weight (232) and is fixedly connected to the weight (232), and the reel (24) completely reels the second traction rope (25) before the clamping unit (21) contacts the cable (1).

6. The processing equipment for high flame retardant insulation ultra-high voltage flat aluminum sheathed cable according to claim 2 is characterized in that: The cutting unit (2) further comprises a deceleration unit (26), the deceleration unit (26) comprising a deceleration rod (261) arranged on the clamping unit (21), a deceleration sleeve (262) being arranged horizontally at the front end in the moving direction when the clamping unit (21) is reset, the deceleration sleeve (262) being slidably matched with the deceleration rod (261), the inner ring diameter of the deceleration sleeve (262) being the same as the diameter of the deceleration rod (261), and a contraction cavity for overflowing the air flow rate in the deceleration sleeve (262) being arranged in the deceleration sleeve (262).

7. The processing equipment for high flame retardant insulation ultra-high voltage flat aluminum sheathed cable according to claim 6 is characterized in that: An air release port (2621) is provided on the reduction sleeve (262) on the side of the contraction chamber facing the reduction rod (261).

8. The processing equipment for high flame retardant insulation ultra-high voltage flat aluminum sheathed cable according to claim 6, characterized in that: An elastic membrane (263) is provided on the inner wall of the reduction sleeve (262) at the contraction cavity, and an expansion cavity (2631) is provided between the elastic membrane (263) and the inner wall of the reduction sleeve (262). When the expansion cavity (2631) is filled with water and expands, a contraction cavity is formed.

9. The processing equipment for high flame retardant insulation ultra-high voltage flat aluminum sheathed cable according to claim 2, characterized in that: The processing equipment further comprises a conveying unit (3) for conveying the cable (1), the conveying unit (3) comprising a plurality of conveying wheels (31) arranged along the conveying direction of the cable (1), the conveying wheels (31) descending in a vertical direction and disengaging from the cable (1) when the cutting unit (2) approaches.

10. The processing equipment for high flame retardant insulation ultra-high voltage flat aluminum sheathed cable according to claim 9, characterized in that: A reflective plate (33) is arranged at the front end of each conveying wheel (31), and a photoelectric sensor (32) for monitoring the position of the reflective plate (33) is arranged horizontally on the clamping unit (21).

Images