CN214313739U

CN214313739U - Mineral substance insulation fireproof cable

Info

Publication number: CN214313739U
Application number: CN202120298027.9U
Authority: CN
Inventors: 朱振远; 王帅; 刘亚芹
Original assignee: Kazakhstan Cable Manufacturing Co ltd
Current assignee: Kazakhstan Cable Manufacturing Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-09-28
Anticipated expiration: 2031-02-02

Abstract

The utility model relates to the technical field of cables, in particular to a mineral insulated fireproof cable; the mineral insulated fireproof cable joint has the advantages that the connection strength of the joint of the mineral insulated fireproof cable is improved, the installation is convenient, and the sealing effect of the joint can be ensured; connecting device includes female joint, sub-joint and adapter sleeve, the right-hand member of female joint is provided with electrically conductive jack, the right-hand member of first cable and female joint's electrically conductive jack electric connection, the left end of sub-joint is provided with electrically conductive plug, the left end of second cable and sub-joint's electrically conductive plug electric connection, the outside of female joint and the outside of sub-joint are provided with first external screw thread structure and second external screw thread structure respectively, half regional first internal thread structure and the second internal thread structure of being provided with respectively on the left side of adapter sleeve inside wall and half regional right side, still include a left side and keep off the ring, the right side keeps off ring and stop device.

Description

Mineral substance insulation fireproof cable

Technical Field

The utility model relates to a technical field of cable especially relates to an insulating fireproof cable of mineral substance.

Background

It is known that the mineral insulated fireproof cable is a cable which uses a copper sheath to wrap a copper conductor core wire and uses magnesium oxide powder as an inorganic insulating material to isolate the conductor and the sheath, and the outermost layer can be selected to be a proper protective sleeve according to requirements. There is a similar cable in which the core and the insulating material are covered with metal instead of copper sheath, which is called mineral insulated metal sheath cable. The mineral insulated fireproof cable has strong high temperature resistance and can still continue to operate under the condition close to flame; the operation temperature is high; the service life is long; the explosion-proof performance is good; high mechanical strength and the like. However, the joint of the cable is a weak link, and how to make the joint of the mineral insulated fireproof cable into high-strength connection and ensure the sealing effect is a difficulty in the power industry.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides an improve mineral substance insulation fireproof cable's joint connection's joint strength, the installation of being convenient for can guarantee the sealed effect of junction moreover, improves the mineral substance insulation fireproof cable of practicality.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a mineral substance insulation fireproof cable comprises a cable body and a connecting device, wherein the cable body comprises a first cable and a second cable which are connected through the connecting device; the connecting device comprises a female connector, a sub connector and a connecting sleeve, wherein the right end of the female connector is provided with a conductive jack, the right end of a first cable is electrically connected with the conductive jack of the female connector, the left end of the sub connector is provided with a conductive plug, the left end of a second cable is electrically connected with the conductive plug of the sub connector, the left end of the conductive plug is inserted into the conductive jack, the outer side of the female connector and the outer side of the sub connector are respectively provided with a first external thread structure and a second external thread structure, the left half area and the right half area of the inner side wall of the connecting sleeve are respectively provided with a first internal thread structure and a second internal thread structure, the right end of the female connector is screwed into the left end of the connecting sleeve, the left end of the sub connector is screwed into the right end of the connecting sleeve, the left end of the outer side of the female connector is provided with a left retaining ring, and the right end of the sub connector is provided with a right retaining ring, connecting sleeve is located between left fender ring and the right fender ring, all is provided with on left fender ring and the right fender ring and carries out spacing stop device to connecting sleeve, stop device is provided with the screw hole including solid fixed ring and fixing bolt on the solid fixed ring, the left end and the right-hand member in the connecting sleeve outside all are provided with the multiunit fixed slot, fixing bolt spiral shell dress passes the screw hole and inserts to one of them and is organized in the fixed slot.

Preferably, the right-hand member that keeps off the ring on a left side and the left end that keeps off the ring on the right side all are provided with the ring channel, adapter sleeve's left end and right-hand member all are provided with the sealing washer, and two sets of sealing washers stretch into respectively to two sets of in the ring channel to two sets of sealing washers paste tightly with the inside wall of two sets of ring channels respectively.

Preferably, the outside of sealing washer is provided with the rubber circle, rubber circle and sealing washer integrated into one piece, two sets of the one end of rubber circle is pasted tightly with adapter sleeve's left end and right-hand member respectively, and the other end of two sets of rubber circles is pasted tightly with the right-hand member of left fender ring and the left end of right fender ring respectively.

Preferably, an elastic rubber ring is arranged in the middle of the inside of the connecting sleeve, and the left end and the right end of the elastic rubber ring are respectively attached to the right end of the female joint and the left end of the male joint.

Preferably, the cable includes the copper conductor, and the outside parcel of copper conductor has the mineral substance insulating layer to it has the mineral substance to fill in the outside of mineral substance insulating layer, and the outside parcel that the mineral substance was filled has the copper sheathing layer, the outside of copper sheathing layer is provided with the articulamentum, and the outside of articulamentum is provided with the outside line cortex.

Preferably, the left end of the female connector and the right end of the male connector are provided with fastening thread sleeves for fastening the first cable and the second cable respectively.

(III) advantageous effects

Compared with the prior art, the utility model provides an insulating fireproof cable of mineral substance possesses following beneficial effect:

1. according to the mineral insulated fireproof cable, a first cable and a second cable are connected through a female joint and a male joint, a conductive plug is inserted into a conductive jack to realize electric connection, the right end of the female joint and the left end of the male joint are respectively inserted into the left end and the right end of a connecting sleeve in a screw manner by rotating the connecting sleeve, so that the female joint and the male joint are connected, the connecting strength of the joint of the joints can be ensured, the installation is convenient, then the mineral insulated fireproof cable is inserted into a fixed groove through a fixing bolt, the connecting sleeve is limited, and the condition that the connecting sleeve is not loosened by rotation is prevented;

2. this mineral substance insulation fireproof cable keeps off respectively through adapter sleeve's left end and right-hand member and keeps off and seal between the ring with the left side, seals electrically conductive post and electrically conductive jack, can guarantee the sealed effect of junction, improves the practicality.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic plan view of the present invention;

fig. 3 is a schematic diagram of the explosion structure of the present invention;

fig. 4 is a schematic perspective view of the connection sleeve of the present invention;

fig. 5 is a schematic structural view of a cable section of the present invention;

in the drawings, the reference numbers: 1. a first cable; 2. a second cable; 3. a female joint; 4. a sub-junction; 5. connecting a sleeve; 6. a conductive jack; 7. a conductive plug; 8. a first external thread formation; 9. a second external thread formation; 10. a left retainer ring; 11. a right baffle ring; 12. a fixing ring; 13. fixing the bolt; 14. fixing grooves; 15. an annular groove; 16. a seal ring; 17. a rubber ring; 18. an elastic rubber ring; 19. a copper conductor; 20. a mineral insulating layer; 21. filling with mineral substances; 22. a copper jacket layer; 23. a connecting layer; 24. an outer skin layer; 25. and (5) fastening the threaded sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the mineral insulated fireproof cable of the present invention includes a cable body and a connecting device, wherein the cable body includes a first cable 1 and a second cable 2, and the first cable 1 and the second cable 2 are connected by the connecting device; the connecting device comprises a female connector 3, a sub-connector 4 and a connecting sleeve 5, wherein the right end of the female connector 3 is provided with a conductive jack 6, the right end of a first cable 1 is electrically connected with the conductive jack 6 of the female connector 3, the left end of the sub-connector 4 is provided with a conductive plug 7, the left end of a second cable 2 is electrically connected with the conductive plug 7 of the sub-connector 4, the left end of the conductive plug 7 is inserted into the conductive jack 6, the outer side of the female connector 3 and the outer side of the sub-connector 4 are respectively provided with a first external thread structure 8 and a second external thread structure 9, the left half area and the right half area of the inner side wall of the connecting sleeve 5 are respectively provided with a first internal thread structure and a second internal thread structure, the right end of the female connector 3 is screwed into the left end of the connecting sleeve 5, and the left end of the sub-connector 4 is screwed into the right end of the connecting sleeve 5, the left end of the outer side of the female joint 3 is provided with a left retaining ring 10, the right end of the outer side of the male joint 4 is provided with a right retaining ring 11, the connecting sleeve 5 is positioned between the left retaining ring 10 and the right retaining ring 11, the left retaining ring 10 and the right retaining ring 11 are both provided with limiting devices for limiting the connecting sleeve 5, each limiting device comprises a fixing ring 12 and a fixing bolt 13, the fixing ring 12 is provided with a threaded hole, the left end and the right end of the outer side of the connecting sleeve 5 are both provided with a plurality of groups of fixing grooves 14, and the fixing bolts 13 penetrate through the threaded holes and are inserted into one group of the fixing grooves 14; the first cable 1 and the second cable 2 are connected through the female joint 3 and the male joint 4, the conductive plug 7 is inserted into the conductive jack 6 to realize electrical connection, the right end of the female joint 3 and the left end of the male joint 4 are respectively inserted into the left end and the right end of the connecting sleeve 5 in a screw manner by rotating the connecting sleeve 5, so that the female joint 3 and the male joint 4 are connected, the connecting strength of the joint of the joints can be ensured, the installation is convenient, then the connecting sleeve 5 is limited by inserting the fixing bolt 13 into the fixing groove 14, and the condition that the connecting sleeve 5 is not loosened by rotation is prevented; through connecting sleeve 5 left end and right-hand member respectively with keep off between ring 10 and the right fender ring 11 sealed, seal electrically conductive post and electrically conductive jack 6 of inserting, can guarantee the sealed effect of junction, improve the practicality.

The right-hand member that the ring 10 was kept off to a left side and the left end that the ring 11 was kept off to the right side all are provided with ring channel 15, adapter sleeve 5's left end and right-hand member all are provided with sealing washer 16, and two sets of sealing washers 16 stretch into respectively to two sets of in the ring channel 15 to two sets of sealing washers 16 paste tightly with the inside wall of two sets of ring channels 15 respectively, the outside of sealing washer 16 is provided with rubber circle 17, rubber circle 17 and sealing washer 16 integrated into one piece, two sets of rubber circle 17's one end pastes tightly with adapter sleeve 5's left end and right-hand member respectively, and two sets of rubber circles 17's the other end pastes tightly with the right-hand member that the ring 10 was kept off to a left side and the left end that the ring 11 was kept off to the right side respectively, keeps off between ring 10 and the adapter sleeve 5 and the right side and keeps off the leakproofness between ring 11 and the adapter sleeve 5 through adapter sleeve 5.

An elastic rubber ring 18 is arranged in the middle of the inside of the connecting sleeve 5, and the left end and the right end of the elastic rubber ring 18 are respectively tightly attached to the right end of the female joint 3 and the left end of the male joint 4; the left end and the right end of the elastic rubber ring 18 are respectively attached to the end parts of the female joint 3 and the male joint 4, and the sealing performance is further ensured.

The cable comprises a copper conductor 19, wherein a mineral insulating layer 20 wraps the outer side of the copper conductor 19, mineral fillers 21 are filled in the outer side of the mineral insulating layer 20, a copper sheath layer 22 wraps the outer side of the mineral fillers 21, a connecting layer 23 is arranged on the outer side of the copper sheath layer 22, and an outer wire skin layer 24 is arranged on the outer side of the connecting layer 23; the mineral insulating layer 20 and the mineral filling 21 are used for insulating, and the outer copper sheath layer 22 is used for protecting against temperature.

The left end of the female joint 3 and the right end of the sub-joint 4 are provided with fastening thread sleeves 25 which are used for fastening the first cable 1 and the second cable 2 respectively; through fastening swivel nut 25 and cable chucking, fastening swivel nut 25 has domatic structure, can fasten the cable along with fastening swivel nut 25's the screwing, and this is electric power industry prior art, does not have too much repeated description.

When the cable connector is used, the first cable 1 and the second cable 2 are connected through the female connector 3 and the male connector 4, the conductive plug 7 is inserted into the conductive jack 6 to realize electric connection, the right end of the female connector 3 and the left end of the male connector 4 are respectively inserted into the left end and the right end of the connecting sleeve 5 in a screwing mode by rotating the connecting sleeve 5, so that the female connector 3 and the male connector 4 are connected, the connecting strength of the joint of the connectors can be guaranteed, the installation is convenient, then the connecting sleeve 5 is limited by inserting the fixing bolt 13 into the fixing groove 14, and the connecting sleeve 5 is prevented from rotating and loosening; left end and right-hand member through adapter sleeve 5 keep off respectively with the left side and encircle 10 and keep off between the ring 11 seal, insert the post and seal with electrically conductive jack 6 to electrically conductive, can guarantee the sealed effect of junction, cross adapter sleeve 5 and keep off the sealing washer 16 and the rubber circle 17 between ring 10 and the right side fender ring 11 with the left side, can guarantee to keep off between ring 10 and the adapter sleeve 5 and keep off the leakproofness between ring 11 and the adapter sleeve 5 with the right side, both ends are attached tightly with the tip of female joint 3 and sub-joint 4 respectively about elastic rubber circle 18, further guarantee the leakproofness.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A mineral substance insulation fireproof cable comprises a cable body and a connecting device, wherein the cable body comprises a first cable (1) and a second cable (2), and the first cable (1) and the second cable (2) are connected through the connecting device; the cable connector is characterized in that the connecting device comprises a female connector (3), a sub-connector (4) and a connecting sleeve (5), a conductive jack (6) is arranged at the right end of the female connector (3), the right end of a first cable (1) is electrically connected with the conductive jack (6) of the female connector (3), a conductive plug (7) is arranged at the left end of the sub-connector (4), the left end of a second cable (2) is electrically connected with the conductive plug (7) of the sub-connector (4), the left end of the conductive plug (7) is inserted into the conductive jack (6), a first external thread structure (8) and a second external thread structure (9) are respectively arranged on the outer side of the female connector (3) and the outer side of the sub-connector (4), a first internal thread structure and a second internal thread structure are respectively arranged on the left half area and the right half area of the inner side wall of the connecting sleeve (5), the right end of the female joint (3) is inserted into the left end of the connecting sleeve (5) in a threaded manner, the left end of the sub-joint (4) is inserted into the right end of the connecting sleeve (5) in a threaded manner, the left end of the outer side of the female joint (3) is provided with a left retaining ring (10), the right end of the outer side of the sub-joint (4) is provided with a right retaining ring (11), the connecting sleeve (5) is positioned between the left retaining ring (10) and the right retaining ring (11), the left retaining ring (10) and the right retaining ring (11) are both provided with a limiting device for limiting the connecting sleeve (5), the limiting device comprises a fixing ring (12) and a fixing bolt (13), a threaded hole is arranged on the fixing ring (12), the left end and the right end of the outer side of the connecting sleeve (5) are both provided with a plurality of groups of fixing grooves (14), the fixing bolts (13) are threaded through the threaded holes and inserted into one set of the fixing grooves (14).

2. The mineral insulated fireproof cable according to claim 1, wherein the right end of the left retaining ring (10) and the left end of the right retaining ring (11) are provided with annular grooves (15), the left end and the right end of the connecting sleeve (5) are provided with sealing rings (16), two sets of sealing rings (16) respectively extend into two sets of annular grooves (15), and two sets of sealing rings (16) respectively abut against the inner side walls of the two sets of annular grooves (15).

3. The mineral insulated fireproof cable according to claim 2, wherein a rubber ring (17) is disposed outside the sealing ring (16), the rubber ring (17) and the sealing ring (16) are integrally formed, one end of each of the two groups of rubber rings (17) is respectively attached to the left end and the right end of the connecting sleeve (5), and the other end of each of the two groups of rubber rings (17) is respectively attached to the right end of the left retaining ring (10) and the left end of the right retaining ring (11).

4. The mineral insulated fireproof cable according to claim 3, wherein an elastic rubber ring (18) is arranged in the middle of the inside of the connecting sleeve (5), and the left end and the right end of the elastic rubber ring (18) are respectively attached to the right end of the female joint (3) and the left end of the male joint (4).

5. The mineral-insulated fireproof cable according to claim 4, wherein the cable comprises a copper conductor (19), the outer side of the copper conductor (19) is wrapped with a mineral insulating layer (20), the outer side of the mineral insulating layer (20) is filled with mineral fillers (21), the outer side of the mineral fillers (21) is wrapped with a copper sheath layer (22), the outer side of the copper sheath layer (22) is provided with a connecting layer (23), and the outer side of the connecting layer (23) is provided with an outer wire skin layer (24).

6. A mineral-insulated fireproof cable according to claim 5, wherein the left end of the female connector (3) and the right end of the male connector (4) are provided with fastening thread sleeves (25) for fastening the first cable (1) and the second cable (2), respectively.