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CN-122025240-A - Wear-resisting tensile crosslinked polyethylene insulation variable frequency cable

CN122025240ACN 122025240 ACN122025240 ACN 122025240ACN-122025240-A

Abstract

The invention relates to the technical field of crosslinked polyethylene insulated cables, and provides a wear-resistant tensile crosslinked polyethylene insulated variable-frequency cable which comprises a conductor, a crosslinked polyethylene insulating layer, an inner sheath, an armor layer and an outer sheath, wherein the crosslinked polyethylene insulating layer is wrapped outside the conductor, the outer sheath and the armor layer are sequentially wrapped outside the inner sheath, the wear-resistant variable-frequency cable further comprises a plurality of wear-resistant protection units and a tensile connecting component, the wear-resistant protection units are detachably arranged outside the outer sheath and used for providing impact resistance and wear resistance dual protection for the outer part of the cable, and the tensile connecting component is used for connecting two adjacent wear-resistant protection units and carrying out tensile reinforcement on the outer part of the cable in cooperation with the wear-resistant protection units. Through above-mentioned technical scheme for solve among the prior art wear-resisting tensile properties of cable mainly rely on the oversheath, deal with not enough to complicated operating mode environment, change the higher problem of cost of maintenance.

Inventors

  • ZHAI LIYUAN

Assignees

  • 河北明一线缆有限公司

Dates

Publication Date
20260512
Application Date
20260317

Claims (9)

  1. 1. The utility model provides a wear-resisting tensile crosslinked polyethylene insulation variable frequency cable, includes conductor (1), crosslinked polyethylene insulating layer (2), inner sheath (3), armor (4) and oversheath (5), crosslinked polyethylene insulating layer (2) parcel is in the outside of conductor (1), oversheath (5) with armor (4) parcel in proper order is in the outside of inner sheath (3), its characterized in that still includes: The wear-resistant protection units are detachably arranged outside the outer sheath (5) and used for providing impact resistance and wear resistance double protection for the outer part of the cable; the tensile connecting assembly is used for connecting two adjacent wear-resistant protection units and carrying out tensile reinforcement on the outside of the cable in cooperation with the wear-resistant protection units.
  2. 2. The wear-resistant tensile crosslinked polyethylene insulated variable frequency cable of claim 1, wherein the wear-resistant protection unit comprises: The two protection rings are detachably arranged outside the outer sheath (5); The tensile connecting rod (104), tensile connecting rod (104) can dismantle the setting and be in two between the protection ring, tensile connecting rod (104) are provided with a plurality ofly, wholly splice to the tube-shape to two form annular enhancement protective structure between the protection ring.
  3. 3. The wear resistant tensile crosslinked polyethylene insulated power conversion cable according to claim 2, wherein the tensile connecting component comprises: The connecting rings are arranged in two and detachably arranged on the protecting ring; the telescopic protective sleeve is arranged between the two connecting rings.
  4. 4. A wear resistant tensile crosslinked polyethylene insulated variable frequency cable according to claim 3, wherein the telescoping shield comprises: the inner ring and the outer ring are provided with a plurality of rings, and the inner ring and the outer ring are arranged in a staggered manner; The clamping ring (201), clamping ring (201) is fixed to be sleeved with the tip of inner ring, the tip of outer loop is fixed to be provided with keeps off ring (205), keep off ring (205) with clamping ring (201) contact, keep off ring (205) with there is the clearance between the inner ring.
  5. 5. The wear resistant, tensile crosslinked polyethylene insulated power conversion cable according to claim 4, wherein the guard ring comprises: a protection half ring (101), wherein the protection half ring (101) is provided with two protection half rings; the inserting plate (102) is fixedly arranged at one end of the protection semi-ring (101), and a slot matched with the inserting plate (102) is formed at the other end of the protection semi-ring (101); the limiting bolt (103), limiting bolt (103) with protection semi-ring (101) threaded connection, set up on picture peg (102) and supply limiting bolt (103) pass the connecting hole.
  6. 6. The wear-resistant tensile cross-linked polyethylene insulated variable frequency cable according to claim 5, wherein the end part of the tensile connecting rod (104) is fixedly connected with a connecting lug (105), and the protecting ring is provided with a mounting groove matched with the connecting lug (105).
  7. 7. The wear resistant, tensile crosslinked polyethylene insulated power conversion cable according to claim 6, wherein said connection ring comprises: -a connector half-ring (206), said connector half-ring (206) being provided with two; And the connecting bolt (207), the connecting semi-ring (206) and the protecting ring are detachably connected through the connecting bolt (207).
  8. 8. The wear resistant, tensile crosslinked polyethylene insulated power conversion cable according to claim 7, wherein said outer ring comprises: the outer semi-rings (202) are arranged, two outer semi-rings (202) are detachably connected through fixing bolts (204).
  9. 9. The wear resistant, tensile crosslinked polyethylene insulated power conversion cable according to claim 8, wherein said inner ring comprises: The inner semi-rings (203) are arranged, two inner semi-rings (203) are detachably connected through fixing bolts (204).

Description

Wear-resisting tensile crosslinked polyethylene insulation variable frequency cable Technical Field The invention relates to the technical field of crosslinked polyethylene insulated cables, in particular to a wear-resistant tensile crosslinked polyethylene insulated variable frequency cable. Background The variable frequency cable is mainly used for connecting a variable frequency power supply and a variable frequency motor, the working frequency is usually 30-300 Hz, and the variable frequency cable contains a large amount of higher harmonic components. The prior art generally adopts crosslinked polyethylene as main insulating material, and outer layer crowded package polyvinyl chloride or polyethylene sheath, to the special operating mode that needs tensile wear-resisting, like mining machinery, rail transit etc. need the cable have stronger tensile wear resistance, avoid drawing the damage that causes the cable to cable because the removal of equipment in cable laying or use, the wear-resisting protection of cable is realized to the sheath of present cable mainly relying on outside, provide mechanical protection through the armor between inner sheath and the oversheath, provide tensile protection for the cable, in complicated operating mode environment, the oversheath and the sharp object emergence scraping of cable lead to local damage, influence whole protectiveness and insulating properties, generally need change whole cable after the oversheath damages, the replacement cost is higher. Disclosure of Invention The invention provides a wear-resistant tensile cross-linked polyethylene insulated variable frequency cable, which is used for solving the problems that the wear-resistant tensile property of the cable in the prior art mainly depends on an outer sheath, the complex working condition environment is not enough, and the replacement and maintenance cost is high. The technical scheme of the invention is as follows: The utility model provides a wear-resisting tensile crosslinked polyethylene insulation variable frequency cable, includes conductor, crosslinked polyethylene insulating layer, inner sheath, armor and oversheath, crosslinked polyethylene insulating layer parcel is in the outside of conductor, the oversheath with the armor is in proper order wrapped up in the outside of inner sheath still includes: Wear-resisting protection unit, wear-resisting protection unit is provided with a plurality ofly, wear-resisting protection unit can dismantle the setting and be in the outside of oversheath for provide the outside shock resistance and the dual protection of stand wear and tear of cable, wear-resisting protection unit includes: The two protection rings are detachably arranged outside the outer sheath; The tensile connecting rods are detachably arranged between the two protection rings, a plurality of tensile connecting rods are arranged, and the tensile connecting rods are integrally spliced to form a cylindrical pair of annular reinforced protection structures between the two protection rings; The tensile connecting assembly, the tensile connecting assembly is used for connecting two adjacent wear-resisting protection units and with wear-resisting protection unit cooperation carries out tensile reinforcement to the cable outside, the tensile connecting assembly includes: The connecting rings are arranged in two and detachably arranged on the protecting ring; The flexible lag, flexible lag sets up two between the go-between, flexible lag includes: the inner ring and the outer ring are provided with a plurality of rings, and the inner ring and the outer ring are arranged in a staggered manner; The clamping ring is fixedly sleeved at the end part of the inner ring, a baffle ring is fixedly arranged at the end part of the outer ring, the baffle ring is contacted with the clamping ring, and a gap exists between the baffle ring and the inner ring. To achieve the removability of the guard ring, the guard ring comprises: The protection semi-ring is provided with two protection semi-rings; The plugboard is fixedly arranged at one end of the protection semi-ring, and a slot matched with the plugboard is formed at the other end of the protection semi-ring; The limiting bolt is in threaded connection with the protection semi-ring, and a connecting hole for the limiting bolt to pass through is formed in the inserting plate. For realizing the detachable connection of tensile connecting rod and protection ring, the tip fixedly connected with of tensile connecting rod connects the lug, set up on the protection ring with the mounting groove that the lug matees. To achieve a detachable connection of the connection ring and the guard ring, the connection ring comprises: the connecting semi-rings are provided with two connecting semi-rings; And the connecting semi-ring is detachably connected with the protecting ring through the connecting bolt. Preferably, the outer ring comprises: the outer semi-rings are arrang