CN212967202U

CN212967202U - Middle-low voltage flame-retardant variable-frequency power cable

Info

Publication number: CN212967202U
Application number: CN202022021290.1U
Authority: CN
Inventors: 潘锋; 赵海燕; 徐强; 魏鑫磊; 冯晓东
Original assignee: Chunbin Group Co ltd
Current assignee: Chunbin Group Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-04-13
Anticipated expiration: 2030-09-15

Abstract

The utility model provides a fire-retardant variable frequency power cable of well low pressure, including the plastic protecting crust, the outside top of plastic protecting crust all is provided with the connecting block, and the inboard of connecting block all is provided with fixed sleeve, fixed sleeve's inboard is provided with the connecting axle, and the outside of connecting axle is provided with the dead lever, the outside of dead lever is provided with the fixed orifices, the inboard of plastic protecting crust all is provided with the baffle, and the inside of baffle is provided with damping spring, the inboard of plastic protecting crust all is provided with the spread groove, and the inboard of spread groove is provided with the sealing washer, the inside of plastic protecting crust is provided with the cable, and the inboard of cable all is provided with the enhancement steel cable, the inboard of cable all is provided with. The utility model discloses a strengthen the steel cable, can this cable play fine stretch-proofing effect like this, avoided because of stretch-proofing effect is poor, lead to the inside copper sheet of cable to take place to damage easily, improved the life of this cable, reduced use cost.

Description

Middle-low voltage flame-retardant variable-frequency power cable

Technical Field

The utility model relates to a relevant technical field of cable especially relates to a fire-retardant variable frequency power cable of well low pressure.

Background

The cable includes power cable, control cable, compensation cable, shielding cable, high temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mining cable, aluminum alloy cable, etc. and is composed of single-strand or multi-strand conductor and insulating layer for connecting circuit, electric appliance, etc.

The existing cable is poor in tensile effect, flame retardant effect and heat dissipation effect, so that when the cable is used, the fire is easily uncontrollable due to the poor flame retardant effect, and therefore fire disasters are caused, and huge potential safety hazards are brought to lives and properties of people.

Therefore, it is necessary to provide a middle and low voltage flame retardant variable frequency power cable to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fire-retardant variable frequency power cable of well low pressure has solved current cable, and tensile effect is poor, flame retardant efficiency is poor and the radiating effect is poor, therefore we are when using this cable, because of flame retardant efficiency is poor, lead to the intensity of a fire to obtain not controlled easily to arouse the conflagration, the problem of bringing huge potential safety hazard for people's the lives and property.

In order to solve the technical problem, the utility model provides a middle-low voltage flame-retardant variable frequency power cable, which comprises a plastic protective shell, wherein the upper part of the outer side of the plastic protective shell is provided with a connecting block, and the inner sides of the connecting blocks are all provided with fixed sleeves, the inner sides of the fixed sleeves are provided with connecting shafts, a fixed rod is arranged on the outer side of the connecting shaft, a fixed hole is arranged on the outer side of the fixed rod, the inner sides of the plastic protective shells are all provided with a clapboard, and the inside of the clapboard is provided with a damping spring, the inner sides of the plastic protective shells are provided with connecting grooves, and the inner side of the connecting groove is provided with a sealing ring, the plastic protective shell is internally provided with a cable, the inner sides of the cable are provided with reinforcing steel ropes, the inner sides of the cables are provided with copper sheets, the inner sides of the cables are provided with magnesium hydroxide flame-retardant filling layers, and air holes are formed in the lower portion of the outer side of the plastic protective shell.

Preferably, the fixing rod is rotatably connected with the connecting block through a connecting shaft, and the connecting block is arranged in a concave structure.

Preferably, the bottom end of the partition plate and the top end of the damping spring are welded, and the damping spring is distributed in the partition plate at equal intervals.

Preferably, the inner side of the connecting groove is movably connected with the outer side of the sealing ring, the inner side of the connecting groove is in a groove shape, and the outer side of the sealing ring is in a protruding shape.

Preferably, the outer side of the reinforcing steel cord is threaded, and the reinforcing steel cord is disposed at equal intervals on the inner side of the cable.

Preferably, the outer side of the magnesium hydroxide flame-retardant filling layer is tightly attached to the inner side of the cable, and the outer side width of the magnesium hydroxide flame-retardant filling layer is smaller than the inner side width of the cable.

Preferably, the air holes are arranged at equal intervals on the outer side of the plastic protective shell, and the upper part inside the air holes is arranged in a grid shape.

Compared with the prior art, the utility model provides a pair of fire-retardant variable frequency power cable of well low pressure has following beneficial effect:

the utility model provides a middle and low voltage flame-retardant variable frequency power cable,

1. the utility model discloses a strengthen the steel cable, can this cable play fine stretch-proofing effect like this, avoided because of stretch-proofing effect is poor, lead to the inside copper sheet of cable to take place to damage easily, improved the life of this cable, reduced use cost.

2. The utility model discloses a bleeder vent is convenient for like this ventilate the heat dissipation to the cable, has avoided damaging or catching fire because of the high temperature leads to the cable, has played the safety in utilization of this cable, has also reduced people's use cost simultaneously.

3. The utility model discloses a fire-retardant filling layer of magnesium hydrate can play fine flame retardant efficiency to this cable like this, has avoided because of flame retardant efficiency is poor to the fire source uncontrollable of cable has improved the safety in utilization of this cable.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of a medium-low voltage flame-retardant variable frequency power cable provided by the present invention;

FIG. 2 is a schematic side view of a preferred embodiment of the medium-low voltage flame retardant variable frequency power cable shown in FIG. 1;

FIG. 3 is a schematic view of the vent hole shown in FIG. 1;

fig. 4 is an enlarged view of the part a shown in fig. 1.

Reference numbers in the figures: 1. a plastic protective shell; 2. connecting blocks; 3. fixing the sleeve; 4. a connecting shaft; 5. fixing the rod; 6. a fixing hole; 7. a partition plate; 8. a damping spring; 9. connecting grooves; 10. a seal ring; 11. a cable; 12. reinforcing the steel rope; 13. a copper sheet; 14. a magnesium hydroxide flame-retardant filler layer; 15. and (4) air holes.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Please refer to fig. 1, fig. 2, fig. 3 and fig. 4 in combination, wherein fig. 1 is a schematic structural diagram of a preferred embodiment of a medium-low voltage flame retardant variable frequency power cable provided by the present invention; FIG. 2 is a schematic side view of a preferred embodiment of the medium-low voltage flame retardant variable frequency power cable shown in FIG. 1; FIG. 3 is a schematic view of the vent hole shown in FIG. 1; fig. 4 is an enlarged view of the part a shown in fig. 1. A middle-low voltage flame-retardant variable frequency power cable comprises a plastic protective shell 1, wherein connecting blocks 2 are arranged above the outer side of the plastic protective shell 1, and the inner sides of the connecting blocks 2 are all provided with fixed sleeves 3, the inner sides of the fixed sleeves 3 are provided with connecting shafts 4, a fixed rod 5 is arranged on the outer side of the connecting shaft 4, a fixed hole 6 is arranged on the outer side of the fixed rod 5, partition plates 7 are arranged on the inner sides of the plastic protective shells 1, a damping spring 8 is arranged inside the clapboard 7, the inner sides of the plastic protective shells 1 are provided with connecting grooves 9, a sealing ring 10 is arranged at the inner side of the connecting groove 9, a cable 11 is arranged inside the plastic protective shell 1, and the inner sides of the cables 11 are provided with reinforced steel ropes 12, the inner sides of the cables 11 are provided with copper sheets 13, the inner sides of the cables 11 are provided with magnesium hydroxide flame-retardant filling layers 14, and the lower parts of the outer sides of the plastic protective shells 1 are provided with air holes 15.

Dead lever 5 is through connecting

axle

4 and 2 swivelling joints of connecting block, and connecting block 2 sets up for "concave" font structure, through connecting block 2, fixed sleeve 3 and connecting axle 4, is convenient for like this through connecting axle 4 with the rotatory assigned position of dead lever 5, and the installation of rethread dead lever 5 and fixed orifices 6 is fixed with cable 11 and adjacent device.

For the welding between the bottom of baffle 7 and damping spring 8's the top, and damping spring 8 is equidistant distribution in the inside of baffle 7, through baffle 7 and damping spring 8, be convenient for like this in transportation and installation, play fine anti extruded effect to cable 11, avoided anti extrusion effect poor, lead to cable 11 to damage easily, improved this cable 11's practicality.

The inboard of spread groove 9 and the outside swing joint of sealing washer 10, and the inboard of spread groove 9 is the recess form setting, and the outside of sealing washer 10 is the setting of protrusion form, through spread groove 9 and sealing washer 10, is convenient for like this play fine sealed water-proof effects to 1 inside cable 11 of plastic protecting crust, has avoided cable 11 to intake, and the condition of electric leakage appears easily, has improved this cable 11's safety in utilization.

The outside of strengthening steel cable 12 is the screw thread form setting, and strengthens steel cable 12 and be equidistant setting in the inboard of cable 11, through strengthening steel cable 12, can play fine stretch-proofing effect by this cable 11 like this, avoided because of stretch-proofing effect is poor, lead to the inside copper sheet 13 of cable 11 to take place to damage easily, improved the life of this cable 11, reduced use cost.

The outside of the fire-retardant filling layer 14 of magnesium hydroxide is closely attached to the inside of the cable 11, and the outside width of the fire-retardant filling layer 14 of magnesium hydroxide is smaller than the inside width of the cable 11, so that a good fire-retardant effect can be achieved on the cable 11 through the fire-retardant filling layer 14 of magnesium hydroxide, and the situation that the fire source of the cable 11 cannot be controlled due to poor fire-retardant effect is avoided, and the use safety of the cable 11 is improved.

The air holes 15 are arranged at equal intervals outside the plastic protective shell 1, the upper part of the inside of the air holes 15 is arranged in a grid shape, and the air holes 15 are used for facilitating ventilation and heat dissipation of the cable 11, so that damage or fire of the cable 11 caused by overhigh temperature is avoided, the use safety of the cable 11 is improved, and the use cost of people is reduced.

The utility model provides a pair of fire-retardant variable frequency power cable of well low pressure's theory of operation as follows:

when the cable is used, firstly, the cable 11 is conveyed to a designated position, then, the cable 11 is fixedly installed with an adjacent device through the connecting block 2, the fixing sleeve 3 and the connecting shaft 4, so that the fixing rod 5 is conveniently rotated to the designated position through the connecting shaft 4, then, the cable 11 is fixedly installed with the adjacent device through the fixing rod 5 and the fixing hole 6, secondly, the cable 11 passes through the connecting groove 9 and the sealing ring 10, so that a good sealing and waterproof effect is achieved on the cable 11 inside the plastic protective shell 1, and finally, the cable 11 passes through the reinforcing steel rope 12 arranged inside the cable 11, so that the cable 11 can achieve a good stretching resistant effect, the copper sheet 13 inside the cable 11 is prevented from being damaged easily due to poor stretching resistant effect, the service life of the cable 11 is prolonged, the use cost is reduced, and then, the magnesium hydroxide flame-retardant filling layer 14 is used, so that a good flame-retardant, the problem that the flame-retardant effect is poor is solved, the fire source of the cable 11 cannot be controlled, the use safety of the cable is improved, the ventilation holes 15 are formed in the lower portion of the outer side of the plastic protective shell 1, so that the cable 11 can be conveniently ventilated and cooled, the cable 11 is prevented from being damaged or ignited due to overhigh temperature, the use safety of the cable 11 is improved, the use cost of people is reduced, and the use of the medium-low voltage flame-retardant variable-frequency power cable is completed.

1. the utility model discloses a strengthen steel cable 12, can this cable 11 play fine stretch-proofing effect like this, it is poor to have avoided because of stretch-proofing effect, leads to cable 11 inside copper sheet 13 to take place to damage easily, has improved this cable 11's life, has reduced use cost.

2. The utility model discloses a bleeder vent 15 is convenient for like this to cable 11 ventilate and dispel the heat, has avoided leading to cable 11 to damage or catch fire because of the high temperature, has played this cable 11's safety in utilization, has also reduced people's use cost simultaneously.

3. The utility model discloses a fire-retardant filling layer 14 of magnesium hydrate can play fine flame retardant efficiency to this cable 11 like this, has avoided because of flame retardant efficiency is poor to cable 11's burning things which may cause a fire disaster uncontrollable has improved this cable 11's safety in utilization.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. A middle-low voltage flame-retardant variable frequency power cable comprises a plastic protective shell (1) and is characterized in that connecting blocks (2) are arranged above the outer side of the plastic protective shell (1), fixing sleeves (3) are arranged on the inner sides of the connecting blocks (2), connecting shafts (4) are arranged on the inner sides of the fixing sleeves (3), fixing rods (5) are arranged on the outer sides of the connecting shafts (4), fixing holes (6) are formed in the outer sides of the fixing rods (5), partition plates (7) are arranged on the inner sides of the plastic protective shell (1), damping springs (8) are arranged inside the partition plates (7), connecting grooves (9) are arranged on the inner sides of the protective plastic shell (1), sealing rings (10) are arranged on the inner sides of the connecting grooves (9), cables (11) are arranged inside the plastic protective shell (1), and reinforcing steel ropes (12) are arranged on the inner sides of the cables (11), copper sheets (13) are arranged on the inner sides of the cables (11), magnesium hydroxide flame-retardant filling layers (14) are arranged on the inner sides of the cables (11), and air holes (15) are formed in the lower portion of the outer sides of the plastic protective shells (1).

2. The medium and low voltage flame retardant variable frequency power cable according to claim 1, wherein the fixing rod (5) is rotatably connected with the connecting block (2) through a connecting shaft (4), and the connecting block (2) is arranged in a concave structure.

3. The medium and low voltage flame retardant variable frequency power cable according to claim 1, wherein the bottom end of the partition plate (7) and the top end of the damping spring (8) are welded, and the damping spring (8) is distributed in the partition plate (7) at equal intervals.

4. The medium and low voltage flame retardant variable frequency power cable according to claim 1, wherein the inside of the connecting groove (9) is movably connected with the outside of the sealing ring (10), the inside of the connecting groove (9) is arranged in a groove shape, and the outside of the sealing ring (10) is arranged in a protrusion shape.

5. The medium and low voltage flame retardant variable frequency power cable according to claim 1, wherein the outer side of the reinforcing steel cord (12) is arranged in a thread shape, and the reinforcing steel cord (12) is arranged at equal intervals on the inner side of the cable (11).

6. The medium and low voltage flame-retardant variable frequency power cable according to claim 1, wherein the outer side of the magnesium hydroxide flame-retardant filling layer (14) is closely attached to the inner side of the cable (11), and the outer width of the magnesium hydroxide flame-retardant filling layer (14) is smaller than the inner width of the cable (11).

7. The medium and low voltage flame retardant variable frequency power cable according to claim 1, wherein the air holes (15) are arranged at equal intervals on the outer side of the plastic protective shell (1), and the upper part of the inside of the air holes (15) is arranged in a grid shape.