CN112072386B

CN112072386B - Composite mineral cable

Info

Publication number: CN112072386B
Application number: CN202010943205.9A
Authority: CN
Inventors: 吴海敏
Original assignee: Shenzhen Zhonglan Cable Group Co ltd
Current assignee: Shenzhen Zhonglan Cable Group Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-05-28
Anticipated expiration: 2040-09-09
Also published as: CN112072386A

Abstract

The invention discloses a composite mineral cable, which adopts the technical scheme that: the cable connecting structure comprises a left connecting piece, a right connecting piece, an electric field control connecting piece and a cable I, wherein the electric field control connecting piece is fixedly arranged at the two ends of the left connecting piece and the right connecting piece, the cable I is fixedly arranged on the inner wall of the electric field control connecting piece, the left connecting piece comprises a first outer shell, an outer buckling edge is fixedly arranged on the outer wall of the first outer shell, a first inner shell is arranged on the inner wall of the first outer shell, the left side of the first inner shell is fixedly arranged on the inner wall of the first outer shell, the right connecting piece comprises a second outer shell, an inner shell is arranged on the inner wall of the: the left connecting piece is inserted in the inner wall of the right connecting piece, the first outer shell and the first inner shell rotate through the movable shaft, and the outer buckling edge and the inner buckling edge are connected in a rotating mode, so that the left connecting piece and the right connecting piece are combined, and the installation and butt joint effect is convenient.

Description

Composite mineral cable

Technical Field

The invention relates to the technical field of electronic equipment damping supports, in particular to a composite mineral cable.

Background

Mineral substance cable is widely used in control installation, connecting equipment, transmission electric power, is the indispensable important transmission medium in the aspects such as industry, civilian, and the cable has multiple specification, model in order to be applicable to the demand of different equipment and transmission purpose.

The prior art has the following defects: the existing mineral cable is easy to damp at the power installation butt joint, an absolute source combination filling layer of the cable is composed of mineral magnesium oxide, when a conductor leaks in a naked mode after the end of the cable is stripped in cable construction, the conductor is easy to react with moisture in the air to generate magnesium oxide capable of conducting electricity, the insulation resistance of the cable is generally 100 MOmega, if the manufacturing time of the cable head exceeds 1 hour, the insulation resistance can be reduced to be below 10 MOmega, even to be below 0.5 MOmega, therefore, electrical potential hazards are inevitably brought in the engineering of cable application, the construction difficulty is large, the hardness of the mineral cable is higher than that of the common cable, the weight is about twice that of the common cable, the parallel and neat impression effect is not easily achieved during laying, the line is long, the number of joints is large, and fault point finding is difficult, so the construction difficulty is large.

Therefore, there is a need for a composite mineral cable.

Disclosure of Invention

Therefore, the invention provides a composite mineral cable which is placed at the twisted joint of single-wire conductors through an intermediate connecting piece, is rotatably installed on the outer wall of the intermediate connecting piece through a pressing head to fix the single-wire conductors, then a left connecting piece is inserted into the inner wall of a right connecting piece, an outer shell I and an inner shell I rotate through a movable shaft, an outer buckling edge and an inner buckling edge are rotatably connected, and therefore the left connecting piece and the right connecting piece are combined, and the problem of electric installation butt joint of the mineral cable is solved.

In order to achieve the above purpose, the invention provides the following technical scheme: a composite mineral cable comprises a left connecting piece, a right connecting piece, an electric field control connecting piece and a first cable.

Preferably, electric field control connecting pieces are fixedly installed at two ends of the left connecting piece and the right connecting piece, the first cable is fixedly installed on the inner wall of each electric field control connecting piece, each left connecting piece comprises a first outer shell, an outer buckling edge is fixedly installed on the outer wall of the first outer shell, a first inner shell is arranged on the inner wall of the first outer shell, the left side of the first inner shell is fixedly installed on the inner wall of the first outer shell, each right connecting piece comprises a second outer shell, a second inner shell is arranged on the inner wall of the second outer shell, and an inner buckling edge;

a first tail connector is fixedly installed on the left side of the left connecting piece, a sealing slide rail is arranged on the inner wall of the first tail connector, a movable shaft is movably installed on the inner wall of the sealing slide rail, a ball is movably installed on the inner wall of the movable shaft, and a V-shaped sealing ring is fixedly installed at the bottom of the movable shaft;

the electric field control connecting piece comprises an interface, a left side connecting piece is fixedly provided with a flexible pipe, the left side of the flexible pipe is fixedly connected with the right side of the interface, the left side of the interface is fixedly provided with an explosion-proof head, the left side of the explosion-proof head is fixedly provided with an outer shell, the left side of the inner wall of the outer shell is fixedly provided with a limiting block, the right side of the limiting block is fixedly provided with a stress cone structure sheath, the inner wall of the explosion-proof head is fixedly provided with a first silica gel, the right side of the stress cone structure sheath is fixedly connected with a first silica gel, and the limiting block.

Preferably, the first outer shell is inserted into the inner wall of the second outer shell, the first inner shell is inserted into the second outer shell, and the left connecting piece and the right connecting piece are rotatably connected with the outer buckling edges through the inner buckling edges.

Preferably, a limiting ring is arranged on the left side of the outer wall of the left connecting piece, and a first sealing ring is fixedly mounted on the right side of the limiting ring.

Preferably, a T-shaped sealing ring is fixedly arranged on the left side of the inner wall of the left connecting piece.

Preferably, a T-shaped sealing ring II is fixedly mounted on the inner wall of the right side of the right connecting piece.

Preferably, the right side of the right connecting piece is fixedly provided with a second tail connector, and the inner wall of the second tail connector is fixedly provided with a third T-shaped sealing ring.

Preferably, a second sealing ring is fixedly mounted at the joint of the interface and the flexible pipe, a third sealing ring is fixedly mounted at the joint of the interface and the explosion-proof head, a fourth sealing ring is uniformly mounted at the joint of the first silica gel and the first cable, and a fifth sealing ring is uniformly mounted at the joint of the limiting block and the first cable.

Preferably, the wiring end is fixedly installed on the left side of the shell, and a rubber ring is fixedly installed at the joint of the outer wall of the wiring end and the shell.

Preferably, left side connecting piece and right connecting piece inner wall central point fixed mounting have copper sheath one, an inner wall of copper sheath is equipped with cable one, cable one includes low smoke and zero halogen sheath, low smoke and zero halogen sheath inner wall fixed mounting has the insulating layer of mineral substance, the insulating layer of mineral substance inner wall fixed mounting has single conductor, cable one peels off at stress cone structure sheath inner wall and exposes single conductor, single conductor passes electric field control connecting piece, left connecting piece and right connecting piece fixed mounting at an inner wall of copper sheath, and is two sets of an outer wall of copper sheath is equipped with intermediate junction spare, intermediate junction spare is including pressing the head, and is two sets of a first screw connection with pressing the head through intermediate junction spare of copper sheath.

Preferably, left side connecting piece and right connecting piece inner wall central point fixed mounting have copper sheath two, two inner walls of copper sheath are equipped with cable two, cable two is including high fire-retardant sheath, high fire-retardant sheath inner wall fixed mounting has the mineral substance filling layer, mineral substance filling layer inner wall fixed mounting has multi-thread transposition conductor, cable two passes electric field control connecting piece, left connecting piece and right connecting piece fixed mounting at two inner walls of copper sheath, cable two peels off at stress cone structure sheath inner wall and exposes multi-thread transposition conductor, multi-thread transposition conductor passes electric field control connecting piece, left connecting piece and right connecting piece fixed mounting at two inner walls of copper sheath, and is two sets of the outer wall of copper sheath is equipped with intermediate junction spare, and is two sets of copper sheath two are crossed intermediate junction spare and are pressed first screwed connection tightly.

The invention has the beneficial effects that:

1. the first cable is arranged on the inner wall of the electric field control connecting piece, the first cable is peeled off from the inner wall of the stress cone structure sheath to expose single-wire conductors, the single-wire conductors pass through a left connecting piece and a right connecting piece and are arranged on the inner wall of a copper sheath, an intermediate connecting piece and a pressing head pass through the outer wall of the copper sheath in advance, the single-wire conductors pass through the copper sheath to enable two groups of single-wire conductors to be sequentially connected in a twisted mode, the intermediate connecting piece of the intermediate connecting piece is placed at the twisted connection position of the single-wire conductors, the pressing head is rotatably arranged on the outer wall of the intermediate connecting piece to fix the single-wire conductors and the copper sheath I, then the left connecting piece is inserted into the inner wall of the right connecting piece, the first outer shell and the first inner shell;

2. interface and flexible pipe junction fixed mounting have sealing washer two, interface and explosion-proof first junction fixed mounting have sealing washer three, silica gel one evenly installs sealing washer four with cable one junction, stopper and cable one junction evenly install sealing washer five, it is concrete, two pairs of interfaces of sealing washer have a sealing effect with flexible pipe, three pairs of interfaces of sealing washer have a sealing effect with explosion-proof first, sealing washer four have a sealing effect to silica gel one and cable one, five pairs of stoppers and cable one have a sealing effect to sealing washer, explosion-proof first inner wall fixed mounting has silica gel one, stress cone structure sheath right side fixed connection silica gel left side, the stopper, stress cone structure sheath and a silica gel inner wall parcel cable one, the effect that has superstrong adsorptivity and safe explosion-proof nature.

Drawings

Fig. 1 is a schematic view of the installation and connection of a left connecting member and an electric field control connecting member in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a left connecting member and a right connecting member in embodiment 1 of the present invention;

fig. 3 is a schematic view of the connection between the left connecting member and the right connecting member in embodiment 1 of the present invention;

FIG. 4 is a schematic structural diagram of a tail interface in embodiment 1 of the present invention;

FIG. 5 is a schematic structural view of a cable according to embodiment 1 of the present invention;

FIG. 6 is a schematic view of an intermediate connecting member according to embodiment 1 of the present invention;

fig. 7 is a schematic structural diagram of a second cable according to embodiment 2 of the present invention;

fig. 8 is a schematic view of cable butt-joint installation according to embodiment 2 of the present invention;

fig. 9 is a schematic structural view of a copper sheath two according to embodiment 2 of the present invention.

In the figure: the high-fire-retardant cable comprises a left connecting piece 100, a first outer shell 110, a limiting ring 111, a first sealing ring 112, a first T-shaped sealing ring 113, a first inner shell 120, an outer buckling edge 130, a first copper sheath 140, a second copper sheath 141, a first tail interface 150, a sealing slide rail 151, a V-shaped sealing ring 152, a movable shaft 153, a ball 154, a flexible pipe 160, a middle connecting piece 170, a pressing head 171, a right connecting piece 200, a second outer shell 210, a second inner shell 220, an inner buckling edge 230, a second T-shaped sealing ring 240, a second tail interface 250, a third T-shaped sealing ring 251, an electric field control connecting piece 300, an interface 310, a second sealing ring 311, an explosion-proof head 320, a third sealing ring 321, a fourth sealing ring 322, a first silica gel 330, a first outer shell 340, a limiting block 350, a fifth sealing ring 351, a terminal 360, a rubber ring 361, a stress cone structure sheath 370, a first cable 400, a halogen-free sheath 401, a mineral substance, A multi-wire stranded conductor 413.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Embodiment 1, referring to fig. 1 to 6, the present invention provides a composite mineral cable, including a left connector 100, a right connector 200, an electric field control connector 300, and a first cable 400;

further, the electric field control connecting pieces 300 are fixedly installed at two ends of the left connecting piece 100 and the right connecting piece 200, the cable one 400 is fixedly installed on the inner wall of the electric field control connecting piece 300, the left connecting piece 100 comprises a first outer shell 110, an outer buckling edge 130 is fixedly installed on the outer wall of the first outer shell 110, a first inner shell 120 is arranged on the inner wall of the first outer shell 110, the left side of the first inner shell 120 is fixedly installed on the inner wall of the first outer shell 110, the right connecting piece 200 comprises a second outer shell 210, a second inner shell 220 is arranged on the inner wall of the second outer shell 210, and an inner buckling edge 230 is fixedly installed on the outer wall of the second inner shell 220;

the left side of the left connecting piece 100 is fixedly provided with a first tail interface 150, the inner wall of the first tail interface 150 is provided with a sealing slide rail 151, the inner wall of the sealing slide rail 151 is movably provided with a movable shaft 153, the inner wall of the movable shaft 153 is movably provided with a ball 154, the bottom of the movable shaft 153 is fixedly provided with a V-shaped sealing ring 152, the first tail interface 150 has a limiting effect on the single-wire conductor 403, the sealing slide rail 151 is matched with the movable shaft 153 to use to have a rotating effect on the left connecting piece 100, the ball 154 has a friction reducing effect on the movable shaft 153, the V-shaped sealing ring 152 is an elastic rubber sealing ring with an axial effect and is used as a non-pressure seal of a rotating shaft, a sealing lip has better mobility and adaptability, larger tolerance and angle deviation can be compensated, internal grease or oil can be prevented from leaking outwards, external splashing or dust can be prevented, and the V-, the first tail interface 150 has a rotating effect on the left connecting piece 100;

the electric field control connecting piece 300 comprises an interface 310, a flexible pipe 160 is fixedly installed on the left side of a left connecting piece 100, the left side of the flexible pipe 160 is fixedly connected with the right side of the interface 310, an explosion-proof head 320 is fixedly installed on the left side of the interface 310, a shell 340 is fixedly installed on the left side of the explosion-proof head 320, a limiting block 350 is fixedly installed on the left side of the inner wall of the shell 340, a stress cone structure sheath 370 is fixedly installed on the right side of the limiting block 350, a first silica gel 330 is fixedly installed on the inner wall of the explosion-proof head 320, the right side of the stress cone structure sheath 370 is fixedly connected with the left side of the first silica gel 330, the limiting block 350, the stress cone structure sheath 370 and the inner wall of the first silica gel 330 wrap a first cable 400, the interface 310 has a connecting effect on the flexible pipe 160, the flexible pipe 160 has an effect of connecting the interface 310 and, the shell 340 has an installation effect on the limiting block 350 and the stress cone structure sheath 370, the limiting block 350 has a limiting effect on the first cable 400, the first silica gel 330 is set to be semiconductor silica gel and has an excellent permanent antistatic function, the first silica gel 330 has sealing, insulating and limiting effects on the single-wire conductor 403, the stress cone structure sheath 370 is made of conductive silicon rubber, the stress cone structure sheath 370 is sleeved at the fracture of the first cable 400, the stress cone structure sheath 370 is set to be a geometric structure, the equivalent radius is increased, the surrounding medium electrical constant and the surface capacitance are increased through an electrical parameter method, and the electric field stress at the fracture is dispersed to ensure the reliable operation of the cable;

further, the first outer shell 110 is inserted into the inner wall of the second outer shell 210, the first inner shell 120 is inserted into the second outer shell 210, the left connecting piece 100 and the right connecting piece 200 are rotatably connected with the outer buckling edge 130 through the inner buckling edge 230, specifically, the first outer shell 110 is buckled with the second outer shell 210, the first inner shell 120 is buckled with the second outer shell 210, so that the left connecting piece 100 is more tightly connected with the right connecting piece 200, the outer buckling edge 130 and the inner buckling edge 230 have a connecting and combining effect on the left connecting piece 100 and the right connecting piece 200, and the left connecting piece 100 and the right connecting piece 200 are prevented from falling off;

further, a limiting ring 111 is arranged on the left side of the outer wall of the left connecting piece 100, a first sealing ring 112 is fixedly mounted on the right side of the limiting ring 111, specifically, when the left connecting piece 100 and the right connecting piece 200 are combined, the second shell 210 is buckled with the limiting ring 111 and sealed through the first sealing ring 112, and the first sealing ring 112 has a sealing effect on the second shell 210 and the limiting ring 111;

further, a first T-shaped sealing ring 113 is fixedly mounted on the left side of the inner wall of the left connecting piece 100, specifically, the first T-shaped sealing ring 113 is made of polytetrafluoroethylene rubber, has high temperature resistance and corrosion resistance, is not only convenient to react with concentrated acid, alkali or strong oxidant at high temperature, but also has the effect of preventing dust and moisture from entering the left connecting piece 100;

further, a second T-shaped sealing ring 240 is fixedly mounted on the inner wall of the right side of the right connecting piece 200, and specifically, the second T-shaped sealing ring 240 has a sealing effect on the right connecting piece 200;

further, a second tail connector 250 is fixedly installed on the right side of the right connecting piece 200, a third T-shaped sealing ring 251 is fixedly installed on the inner wall of the second tail connector 250, and specifically, the second tail connector 250 has a connecting effect on the electric field control connecting piece 300;

further, a second sealing ring 311 is fixedly installed at the joint of the interface 310 and the flexible pipe 160, a third sealing ring 321 is fixedly installed at the joint of the interface 310 and the explosion-proof head 320, a fourth sealing ring 322 is evenly installed at the joint of the first silica gel 330 and the first cable 400, a fifth sealing ring 351 is evenly installed at the joint of the limiting block 350 and the first cable 400, specifically, the second sealing ring 311 has a sealing effect on the interface 310 and the flexible pipe 160, the third sealing ring 321 has a sealing effect on the interface 310 and the explosion-proof head 320, the fourth sealing ring 322 has a sealing effect on the first silica gel 330 and the first cable 400, the fifth sealing ring 351 has a sealing effect on the limiting block 350 and the first cable 400, accessories on the inner wall of the electric field control connecting piece 300 must have excellent sealing performance such as water resistance, moisture resistance and the like, once moisture and moisture enter the inside of the first sealing ring, water tree-shaped, The fourth sealing ring 322 and the fifth sealing ring 351 have the functions of making the electric field control connecting piece 300 achieve excellent water-proof, moisture-proof and sealing;

further, a terminal 360 is fixedly installed on the left side of the housing 340, a rubber ring 361 is fixedly installed at the joint of the outer wall of the terminal 360 and the housing 340, specifically, the terminal 360 is an inlet end of the first cable 400, the terminal 360 has an installation effect on the first cable 400, and the rubber ring 361 has a protection effect on the joint of the terminal 360 and the housing 340;

further, a first copper sheath 140 is fixedly installed at the center position of the inner walls of the left connecting piece 100 and the right connecting piece 200, a first cable 400 is arranged on the inner wall of the first copper sheath 140, the first cable 400 comprises a low-smoke halogen-free sheath 401, a mineral insulating layer 402 is fixedly installed on the inner wall of the low-smoke halogen-free sheath 401, a single-wire conductor 403 is fixedly installed on the inner wall of the mineral insulating layer 402, the first cable 400 is peeled off from the inner wall of the stress cone structure sheath 370 to expose the single-wire conductor 403, the single-wire conductor 403 passes through the electric field control connecting piece 300, the left connecting piece 100 and the right connecting piece 200 are fixedly installed on the inner wall of the first copper sheath 140, a middle connecting piece 170 is arranged on the outer walls of the two groups of first copper sheaths 140, the middle connecting piece 170 comprises a pressing head 171, the two groups of first copper sheaths are, the low smoke and zero halogen sheath 401 is by the time of being heated the discharge fume low, and itself does not contain thermoplasticity or thermosetting composition of halogen, the insulating layer 402 of mineral substance adopts closely knit magnesia as the material, single line conductor 403 conductor is single conduction current's conductor, there is a large amount of charged particles that can freely move in the conductor to be called the carrier, under the effect of outer electric field, the carrier makes directional motion, form obvious electric current, stress cone structure sheath 370 has the effect of reducing electric field stress to cable 400, prevent that resistance is too big, intermediate junction spare 170 has connection and limiting displacement to copper sheath 140, copper sheath 140 has connection and limiting displacement to single line conductor 403, it has the effect of fixed copper sheath 140 and intermediate junction spare 170 to press head 171.

The using process of the invention is as follows: when the invention is used, workers in the field need to install the first cable 400 on the inner wall of the electric field control connector 300, make the first cable 400 peel off from the inner wall of the stress cone structure sheath 370 to expose the single-wire conductors 403, make the single-wire conductors 403 pass through the left connector 100 and the right connector 200 and be installed on the inner wall of the copper sheath, pre-pass the middle connector 170 and the pressing head 171 through the outer wall of the first copper sheath 140, make the single-wire conductors 403 pass through the first copper sheath 140 to sequentially twist and connect the two groups of single-wire conductors 403, place the middle connector 170 at the twisted connection position of the single-wire conductors 403, rotatably install on the outer wall of the middle connector 170 through the pressing head 171, thereby fixing the single-wire conductors 403 and the first copper sheath to achieve the installation butt joint of the first cable 400, then insert the left connector 100 on the inner wall of the right connector 200, rotate the first outer shell 110 and the first, thereby combining the left connector 100 and the right connector 200 to achieve the installation and butt joint of the first cable 400.

Example 2:

referring to fig. 6-9 of the specification, the composite mineral cable of this embodiment further includes a second cable 410 and a second copper sheath 141;

further, a second copper sheath 141 is fixedly installed at the center position of the inner walls of the left connecting piece 100 and the right connecting piece 200, a second cable 410 is installed on the inner wall of the second copper sheath 141, the second cable 410 comprises a high flame retardant sheath 411, a mineral filling layer 412 is fixedly installed on the inner wall of the high flame retardant sheath 411, a multi-wire stranded conductor 413 is fixedly installed on the inner wall of the mineral filling layer 412, the second cable 410 penetrates through the electric field control connecting piece 300, the left connecting piece 100 and the right connecting piece 200 and is fixedly installed on the inner wall of the second copper sheath 141, the second cable 410 is peeled off from the inner wall of the stress cone structure sheath 370 to expose the multi-wire stranded conductor 413, the multi-wire stranded conductor 413 penetrates through the electric field control connecting piece 300, the left connecting piece 100 and the right connecting piece 200 and is fixedly installed on the inner wall of the second copper sheath 140, the high flame-retardant sheath 411 has a flame-retardant effect, the mineral substance filling layer 412 is made of dense magnesium oxide, the magnesium oxide has high flame-retardant insulating property, the multi-wire stranded conductor 413 has flexibility or curvature for increasing the cable, the cable conductor with a larger cross section is mainly composed of a plurality of wires with smaller diameters, the second copper sheath 141 has connection and limiting effects on the multi-wire stranded conductor 413, the intermediate connecting piece 170 has limiting effect on the second copper sheath 141, and the pressing head 171 has an effect of fixing the intermediate connecting piece 170 and the second copper sheath 141.

The implementation scenario is specifically as follows: when the multi-wire twisted conductor installation butt joint device is used, workers in the field need to pass the intermediate connecting piece 170 and the pressing head 171 through the outer wall of the second copper sheath 141 in advance, pass the multi-wire twisted conductors 413 through the second copper sheath 141 to sequentially twist and connect the two groups of multi-wire twisted conductors 413, place the intermediate connecting piece 170 at the twisted connection position of the multi-wire twisted conductors 413, and rotatably install the intermediate connecting piece 170 on the outer wall of the intermediate connecting piece through the pressing head 171, so that the multi-wire twisted conductors 413 and the second copper sheath 141 are fixed, and the installation butt joint of the second cable.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A composite mineral cable, characterized in that: the cable connecting structure comprises a left connecting piece (100), a right connecting piece (200), an electric field control connecting piece (300) and a first cable (400), wherein the electric field control connecting piece (300) is fixedly installed at two ends of the left connecting piece (100) and the right connecting piece (200), the first cable (400) is fixedly installed on the inner wall of the electric field control connecting piece (300), the left connecting piece (100) comprises a first outer shell (110), an outer buckling edge (130) is fixedly installed on the outer wall of the first outer shell (110), a first inner shell (120) is arranged on the inner wall of the first outer shell (110), the left connecting piece (200) comprises a second outer shell (210), a second inner shell (220) is arranged on the inner wall of the second outer shell (210), and an inner buckling edge (230) is fixedly installed on the outer wall of the second inner shell (220);

a first tail connector (150) is fixedly installed on the left side of the left connecting piece (100), a sealing slide rail (151) is arranged on the inner wall of the first tail connector (150), a movable shaft (153) is movably installed on the inner wall of the sealing slide rail (151), a ball (154) is movably installed on the inner wall of the movable shaft (153), and a V-shaped sealing ring (152) is fixedly installed at the bottom of the movable shaft (153);

electric field control connecting piece (300) includes interface (310), left side connecting piece (100) left side fixed mounting has flexible tube (160), flexible tube (160) left side and interface (310) right side fixed connection, interface (310) left side fixed mounting has explosion-proof head (320), explosion-proof head (320) left side fixed mounting has shell (340), shell (340) inner wall left side fixed mounting has stopper (350), stopper (350) right side fixed mounting has stress cone structure sheath (370), explosion-proof head (320) inner wall fixed mounting has silica gel (330), stress cone structure sheath (370) right side fixed connection silica gel (330) left side, stopper (350), stress cone structure sheath (370) and silica gel (330) inner wall parcel cable (400).

2. The composite mineral cable of claim 1, wherein: the first outer shell (110) is inserted into the inner wall of the second outer shell (210), the first inner shell (120) is inserted into the second outer shell (210), and the left connecting piece (100) and the right connecting piece (200) are rotatably connected with the outer buckling edge (130) through the inner buckling edge (230).

3. The composite mineral cable of claim 1, wherein: a limiting ring (111) is arranged on the left side of the outer wall of the left connecting piece (100), and a first sealing ring (112) is fixedly mounted on the right side of the limiting ring (111).

4. The composite mineral cable of claim 1, wherein: a T-shaped sealing ring I (113) is fixedly arranged on the left side of the inner wall of the left connecting piece (100).

5. The composite mineral cable of claim 1, wherein: and a T-shaped sealing ring II (240) is fixedly arranged on the inner wall of the right side of the right connecting piece (200).

6. The composite mineral cable of claim 1, wherein: and a second tail connector (250) is fixedly mounted on the right side of the right connecting piece (200), and a third T-shaped sealing ring (251) is fixedly mounted on the inner wall of the second tail connector (250).

7. The composite mineral cable of claim 1, wherein: interface (310) and flexible pipe (160) junction fixed mounting have sealing washer two (311), interface (310) and explosion-proof first (320) junction fixed mounting have sealing washer three (321), sealing washer four (322) are evenly installed with cable one (400) junction in silica gel (330), sealing washer five (351) are evenly installed with cable one (400) junction in stopper (350).

8. The composite mineral cable of claim 1, wherein: the utility model discloses a wire connecting structure, including shell (340), shell (340) left side fixed mounting has wiring end (360), the department of being connected of wiring end (360) outer wall and shell (340) fixed mounting has rubber ring (361).

9. The composite mineral cable of claim 1, wherein: left side connecting piece (100) and right connecting piece (200) inner wall central point fixed mounting have copper sheath one (140), copper sheath one (140) inner wall is equipped with cable one (400), cable one (400) are including low smoke and zero halogen sheath (401), low smoke and zero halogen sheath (401) inner wall fixed mounting has the insulating layer of mineral substance (402), the insulating layer of mineral substance (402) inner wall fixed mounting has single conductor (403), cable one (400) is peeled off at stress cone structure sheath (370) inner wall and is exposed single conductor (403), single conductor (403) pass electric field control connecting piece (300), left connecting piece (100) and right connecting piece (200) fixed mounting at copper sheath one (140) inner wall, two sets of copper sheath one (140) outer wall is equipped with intermediate junction spare (170), intermediate junction spare (170) are including pressing head (171), two groups of the first copper sheaths (140) are spirally connected with the pressing head (171) through an intermediate connecting piece (170).

10. The composite mineral cable of claim 1, wherein: the center positions of the inner walls of the left connecting piece (100) and the right connecting piece (200) are fixedly provided with a second copper sheath (141), the inner wall of the second copper sheath (141) is provided with a second cable (410), the second cable (410) comprises a high flame-retardant sheath (411), the inner wall of the high flame-retardant sheath (411) is fixedly provided with a mineral filling layer (412), the inner wall of the mineral filling layer (412) is fixedly provided with a multi-wire stranded conductor (413), the second cable (410) penetrates through an electric field control connecting piece (300), the left connecting piece (100) and the right connecting piece (200) and is fixedly arranged on the inner wall of the second copper sheath (141), the second cable (410) is peeled off on the inner wall of a stress cone structure sheath (370) to expose the multi-wire stranded conductor (413), and the multi-wire stranded conductor (413) penetrates through the electric field control connecting piece (300), the left connecting piece (, the outer walls of the two groups of second copper sheaths (141) are provided with middle connecting pieces (170), and the two groups of second copper sheaths (141) are in spiral connection with the pressing head (171) through the middle connecting pieces (170).