CN113315084B - Power cable butt joint protection device - Google Patents
Power cable butt joint protection device Download PDFInfo
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- CN113315084B CN113315084B CN202110601458.2A CN202110601458A CN113315084B CN 113315084 B CN113315084 B CN 113315084B CN 202110601458 A CN202110601458 A CN 202110601458A CN 113315084 B CN113315084 B CN 113315084B
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- power cable
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- fixing mechanisms
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- 210000001503 joint Anatomy 0.000 title claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 105
- 230000017525 heat dissipation Effects 0.000 claims abstract description 19
- 230000000903 blocking effect Effects 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 14
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 13
- 239000003063 flame retardant Substances 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 3
- 230000001012 protector Effects 0.000 claims 1
- 238000004880 explosion Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
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- 238000004870 electrical engineering Methods 0.000 description 1
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- 239000002360 explosive Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/10—Containers destroyed or opened by flames or heat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/03—Cooling
Abstract
The invention provides a power cable butt joint protection device, which belongs to the technical field of power grid construction and comprises two groups of fixing mechanisms, a plurality of groups of locking mechanisms and a plurality of cover bodies, wherein the fixing mechanisms are arranged on a power cable, two ends of each locking mechanism are in threaded connection with the fixing mechanisms, the locking mechanisms are used for adjusting the distance between the two groups of fixing mechanisms, gaps formed among the locking mechanisms are used for heat dissipation of cable joints, the cover bodies are all arranged along the circumferential direction of the outer circle of the power cable or the cable joints, the cover bodies are in a circular ring shape and are buckled outside the locking mechanisms, the cover bodies are in a long strip-shaped structure, one end of each cover body is clamped on the outer side edge of one group of fixing mechanisms, the other end of each cover body is clamped on the outer side edge of the other group of fixing mechanisms, and the cover bodies are provided with a plurality of through holes for heat dissipation. The power cable butt joint protection device provided by the invention has the technical effects of easiness in heat dissipation of a cable joint, difficulty in fire and explosion, benefit for power line safety and stability in connection of a power cable.
Description
Technical Field
The invention belongs to the technical field of power grid construction, and particularly relates to a power cable butt joint protection device.
Background
With the extensive use of power cables in power systems and electrical engineering, the number of fire and explosion accidents caused by circuit faults of high-voltage cables is increasing. As a weak link in a power cable circuit, the power supply cable connector is easy to form adverse factors such as poor contact, overlarge contact resistance and the like due to improper material selection, improper construction process or severe working environment. During long-term operation of the equipment, these adverse factors cause the temperature of the power supply cable joint to rise continuously until overheating burns through the insulation, causing fire or explosion at the power supply cable joint, thereby causing a fire and delaying burning to other surrounding equipment.
In order to reduce the influence of the fire and explosion faults of the power supply cable connector on surrounding equipment, the conventional power supply cable connector protection technology mostly adopts a closed box body, flame retardant materials are filled between the box body and the power supply cable connector, and when the fire or explosion happens at the power supply cable connector, the fire can be quickly extinguished, the explosion range can be controlled, and the fire can be prevented from spreading to the surrounding equipment. However, the method also hinders the heat dissipation process of the power supply cable joint, and when the power supply cable joint generates heat due to failure, heat is easily accumulated, so that the process of fire or explosion of the power supply cable joint is accelerated, and the safety operation of a power cable line is adversely affected.
Disclosure of Invention
The invention aims to provide a power cable butt joint protection device, and aims to solve the technical problems that the existing cable butt joint is not beneficial to heat dissipation, is easy to accelerate fire or explosion, and has influence on the safety of a power line.
In order to realize the purpose, the invention adopts the technical scheme that: the utility model provides a power cable butt joint protection device, which comprises two groups of fixing mechanisms, a plurality of groups of locking mechanisms and a plurality of cover bodies, wherein the two groups of fixing mechanisms are respectively fixed on two power cables which are mutually butted, and the ends of the two power cables are connected through cable joints; two ends of a plurality of groups of locking mechanisms are respectively in threaded connection with the two groups of fixing mechanisms, the locking mechanisms are used for adjusting the distance between the two groups of fixing mechanisms so as to lock the connection distance of the two power cables, the plurality of groups of locking mechanisms are arranged at intervals around the circumference of the power cables or cable joints, and gaps formed among the plurality of groups of locking mechanisms are used for heat dissipation of the cable joints; the cover body is of a long strip structure, one end of the cover body is clamped to one group of outer side edges of the fixing mechanisms, the other end of the cover body is clamped to the other group of outer side edges of the fixing mechanisms, and the cover body is provided with a plurality of through holes for heat dissipation.
In one possible implementation manner, the fixing mechanism comprises two groups of hoops, a sliding rail, a sliding block and a sleeve, the two groups of hoops are tightly held on the electric cable, and the two groups of hoops are fixedly connected into a whole through a connecting beam; the sliding rail is arranged on the outer side of the connecting beam along the length direction of the power cable; the sliding block is connected to the sliding rail in a sliding mode, a jackscrew penetrates through the sliding block, and the jackscrew is used for locking the sliding block to the sliding rail; the sleeve is internally provided with internal threads, the internal threads are fixedly arranged at the upper end of the sliding block and are in a horizontal shape in the axial direction, the end part of the locking mechanism is in threaded connection with the sleeve, and the distance between the two groups of fixing mechanisms is adjusted by means of the locking mechanism, the threaded connection with the sleeve and the sliding of the sliding block on the sliding rail.
In a possible implementation manner, the locking mechanism comprises two threaded rods, two connecting rods and a screwing sleeve, and the two threaded rods are respectively in threaded connection with the sleeves of the two groups of fixing mechanisms; one end of each of the two connecting rods is provided with a blind hole and is inserted into the end part of the threaded rod, the other end of each of the two connecting rods is a free end and is provided with an external thread, the external thread turning directions of the two connecting rods are opposite, and the external thread turning directions of the connecting rods are the same as the thread turning directions of the threaded rod; the screwing sleeve is a cylindrical component with two through ends, internal threads with opposite screwing directions are arranged on the left half part and the right half part inside along the axial direction respectively, the internal threads of the left half part and the right half part are in threaded connection with the external threads of the connecting rods respectively, the screwing sleeve is used for adjusting the distance between the two connecting rods, the distance between the two fixing mechanisms is adjusted by means of the threaded rod and the threaded connection between the sleeves, the through hole on the cover body is aligned with the screwing end of the screwing sleeve, and the screwing sleeve can be screwed through the through hole.
In a possible implementation manner, the cover body comprises a first clamping part, a second clamping part and a blocking part, and the outer end of the first clamping part is clamped to the outer side edges of the fixing mechanisms; the outer end of the second clamping part is clamped to the outer side edge of the other group of fixing mechanisms; one end of the blocking part is elastically connected with the inner end of the first clamping part through a plurality of elastic components, the other end of the blocking part is elastically connected with the inner end of the second clamping part through a plurality of elastic components, the elastic components are arranged at intervals, the through holes are formed by surrounding gaps among the elastic components, and the length of the cover body is adjusted by means of elastic expansion and contraction of the elastic components.
In a possible implementation manner, the elastic assembly includes a plurality of sets of spring members, one end of the elastic member is fixedly connected with the inner end of the first clamping portion, the other end of the elastic member is fixedly connected with one end of the blocking portion, the elastic member is used for tensioning the first clamping portion and the blocking portion to approach to the middle of the first clamping portion and the blocking portion, and the through hole is further formed in the blocking portion;
the upper end of the blocking portion is hinged to a sealing cover used for sealing the through holes, and after the through holes are sealed by the sealing covers, the inner portion of the cover body is a sealed cavity and used for blocking impact force of the cable joint after the cable joint is ignited and exploded from diffusing to the outer portion of the cover body.
In one possible implementation manner, the hoop comprises an upper shell, a lower shell and a plurality of locking pieces, wherein the upper shell is of a semicircular structure, and covers and buckles one side of the power cable; the lower shell is of a semicircular structure, is covered and buckled on the other side of the power cable, is matched with the upper shell to form a circular cavity, and wraps the power cable; a plurality of retaining members wear to establish go up the casing with on the casing down, be used for connecting the locking go up the casing with casing down, the tie-beam is located go up the casing or on the casing down.
In a possible implementation manner, the upper shell and the lower shell both comprise a plurality of hinged plates, a plurality of grooves and flame-retardant materials, the hinged plates are all arc-shaped and are sequentially hinged end to form a semicircular structure, and the locking piece penetrates through the hinged plates at the end parts; the plurality of grooves are correspondingly arranged on the inner side surfaces of the hinge plates one by one; and the flame-retardant material is filled in the grooves and used for preventing the power cable from igniting and burning.
In a possible implementation manner, the cable joint is further provided with the hoop, the hoop is wrapped on the outer circumference of the cable joint, the flame-retardant material in the hoop is used for preventing the cable joint from burning on fire, and the hinged parts of the hinge plates on the hoop are used for heat dissipation of the cable joint.
In a possible implementation manner, a plurality of bag-shaped bags are fixedly arranged on the inner wall of the cover body, fire extinguishing materials are filled in the bag-shaped bags, the bag-shaped bags are ignited after a power cable or a cable connector is ignited, and the fire extinguishing materials are dispersed and used for preventing the fire from burning after the bag-shaped bags are broken.
In a possible implementation manner, a thermochromic coating is arranged on the outer wall of the cover body, and the thermochromic coating is used for changing the color when the temperature of the cover body rises so as to indicate that the power cable or the cable joint is in an abnormal state.
The power cable butt joint protection device provided by the invention has the beneficial effects that: compared with the prior art, the power cable butt joint protection device comprises two groups of fixing mechanisms, a plurality of groups of locking mechanisms and a plurality of cover bodies, wherein the two groups of fixing mechanisms are respectively fixed on two power cables which are mutually butted, and the end heads of the two power cables are connected through cable joints; two ends of the multiple groups of locking mechanisms are respectively in threaded connection with the two groups of fixing mechanisms, the locking mechanisms are used for adjusting the distance between the two groups of fixing mechanisms so as to lock the connection distance of the two power cables, the multiple groups of locking mechanisms are arranged at intervals around the circumference of the power cables or cable joints, and gaps formed among the multiple groups of locking mechanisms are used for heat dissipation of the cable joints; a plurality of cover bodies all set up along electric power cable or cable joint excircle circumference, a plurality of cover bodies enclose into ring shape, and the cover is detained in the multiunit locking mechanism outside, the cover body is rectangular shape structure, one end joint is to a set of fixed establishment's outer side edge, the other end joint is to another set of fixed establishment's outer side edge, be equipped with a plurality of thru holes that are used for the radiating on the cover body, it is unfavorable for the heat dissipation to have solved current cable butt joint, easily fire or explosion with higher speed, technical problem influential to power line safety, it easily dispels the heat to cable joint to have, be difficult for the explosion that fires, do benefit to power line safety, stable technological effect is connected to the electric power cable.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power cable butt joint protection device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the left half of the structure of FIG. 1;
FIG. 3 is a side view of the power cable butt joint protection apparatus of FIG. 1;
FIG. 4 is a side view of a hoop of a power cable butt joint protection device according to an embodiment of the present invention;
FIG. 5 is a view taken along line A of FIG. 1 or FIG. 2;
fig. 6 is a schematic view of the connection structure between the fixing mechanism and the locking mechanism in fig. 1 or fig. 2.
Description of reference numerals:
1. a fixing mechanism; 11. hooping; 111. an upper housing; 1111. a hinge plate; 1112. a groove; 1113. a flame retardant material; 112. a lower housing; 113. a locking member; 12. a slide rail; 13. a slider; 14. a sleeve; 15. a connecting beam; 2. a locking mechanism; 21. a threaded rod; 22. a connecting rod; 23. screwing the sleeve; 3. a cover body; 31. a first clamping part; 32. a second clamping part; 33. a blocking portion; 34. an elastic component; 4. a power cable; 5. a cable joint; 6. through holes; 7. sealing the cover; 8. buckling; 9. a bladder-like package.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Referring to fig. 1 to 2 together, the power cable butt joint protection device provided by the present invention will now be described. The electric power cable butt joint protection device comprises two groups of fixing mechanisms 1, a plurality of groups of locking mechanisms 2 and a plurality of cover bodies 3, wherein the two groups of fixing mechanisms 1 are respectively fixed on two electric power cables 4 which are mutually butted, and the end heads of the two electric power cables 4 are connected through a cable joint 5; two ends of a plurality of groups of locking mechanisms 2 are respectively in threaded connection with the two groups of fixing mechanisms 1, the locking mechanisms 2 are used for adjusting the distance between the two groups of fixing mechanisms 1 so as to lock the connection distance of the two power cables 4, the plurality of groups of locking mechanisms 2 are arranged around the power cables 4 or cable joints 5 at intervals in the circumferential direction, and gaps formed among the plurality of groups of locking mechanisms 2 are used for heat dissipation of the cable joints 5; a plurality of cover bodies 3 all set up along electric power cable 4 or 5 excircle circumference of cable joint, and a plurality of cover bodies 3 enclose into the ring shape, and the cover is detained in the 2 outsides of multiunit locking mechanism, and the cover body 3 is rectangular shape structure, and one end joint is to the outer side of a set of fixed establishment 1, the other end joint is to the outer side of another set of fixed establishment 1, is equipped with a plurality of thru holes 6 that are used for the heat dissipation on the cover body 3. The connection pitch is a pitch formed by connecting two power cables 4 by a cable joint 5.
Compared with the prior art, the electric power cable butt joint protection device provided by the invention comprises two groups of fixing mechanisms 1, a plurality of groups of locking mechanisms 2 and a plurality of cover bodies 3, wherein the two groups of fixing mechanisms 1 are respectively fixedly arranged on two electric power cables 4 which are mutually butted, and the ends of the two electric power cables 4 are connected through a cable joint 5; two ends of the multiple groups of locking mechanisms 2 are respectively in threaded connection with the two groups of fixing mechanisms 1, the locking mechanisms 2 are used for adjusting the distance between the two groups of fixing mechanisms 1 so as to lock the connection distance of the two power cables 4, the multiple groups of locking mechanisms 2 are arranged around the power cables 4 or cable joints 5 at intervals in the circumferential direction, and gaps formed among the multiple groups of locking mechanisms 2 are used for heat dissipation of the cable joints 5; a plurality of cover bodies 3 all set up along 5 excircle circumference of electric power cable 4 or cable joint, a plurality of cover body 3 enclose into the ring shape, and the cover is detained in the 2 outsides of multiunit locking mechanism, the cover body 3 is rectangular bar-type texture, the one end joint is to the outer side of a set of fixed establishment 1, the other end joint is to the outer side of another set of fixed establishment 1, be equipped with a plurality of thru holes 6 that are used for the heat dissipation on the cover body 3, it is unfavorable for the heat dissipation to have solved current cable butt joint, easily fire or explosion with higher speed, technical problem to influence power line safety, it easily dispels the heat to cable joint 5 to have, the explosion of easily firing, do benefit to power line safety, electric power cable 4 connects stable technological effect.
In this embodiment, the locking mechanisms 2 are arranged in six groups and evenly distributed around the outer circumference of the cable joint 5, and a small gap or no gap may be left between two adjacent locking mechanisms 2, because the heat dissipation of the cover body 3 is mainly through the through hole 6. The cover 3 is an arc-shaped structure when viewed from the cross section of the power cable 4, a plurality of covers 3 can enclose a circular structure, the circular structure can enclose the power cable 4 or the cable connector 5, a gap is left between the circular structure and the cable connector 5, and the fixing mechanism 1 and the locking mechanism 2 are arranged in the gap. The staff can pass through the through hole 6 with the hand or instrument to operate the locking mechanism 2 and the fixing mechanism 1, thus the operation can be realized on the premise of not detaching the cover body 3, and the heat of the cable joint 5 is dissipated, thereby achieving two purposes at one stroke.
Because the length of cable joint 5 differs, then the length of this cover body 3 is adjustable to be applicable to the installation of the cable joint 5 of different length, be detachable connection between cover body 3 and the cable joint 5. When the cover body 3 needs to be disassembled, the cover body can be disassembled from the fixing mechanism 1, otherwise, the cover body can not be disassembled. The two ends of the cover body 3 are provided with hook-shaped structures which can be clamped and fixed on the side edge of the fixing mechanism 1.
In some embodiments, referring to fig. 1 to 6, the fixing mechanism 1 includes two sets of hoops 11, a sliding rail 12, a sliding block 13 and a sleeve 14, the two sets of hoops 11 are tightly held on the power cable 4, and the two sets of hoops 11 are fixedly connected to each other through a connecting beam 15; the sliding rail 12 is arranged outside the connecting beam 15 along the length direction of the power cable 4; the sliding block 13 is connected to the sliding rail 12 in a sliding mode, a jackscrew penetrates through the sliding block 13, and the jackscrew is used for locking the sliding block 13 to the sliding rail 12; the sleeve 14 is internally provided with internal threads, the internal threads are fixedly arranged at the upper end of the sliding block 13 and are in a horizontal shape in the axial direction, the end part of the locking mechanism 2 is in threaded connection with the sleeve 14, and the distance between the two groups of fixing mechanisms 1 is adjusted by means of threaded connection between the locking mechanism 2 and the sleeve 14 and sliding of the sliding block 13 on the sliding rail 12.
Specifically, the tie-beam 15 is the plate structure spare of a rectangular shape, it is in the same place to fix two sets of staple bolts 11, staple bolt 11 divides into two parts, lock each other lock joint together and lock electric power cable 4, be equipped with two sets of tie-beams 15 between two sets of staple bolts 11 at least, tie-beam 15 is annular equipartition around the circumferencial direction of staple bolt 11, through adjusting the position of slider 13 on slide rail 12, just can adjust the hookup location between locking mechanical system 2 and the fixed establishment 1, and then adjust the distance between two sets of fixed establishment 1. The length of the slide rail 12 is smaller than the length of the connecting beam 15.
In some embodiments, referring to fig. 1 to 6, the locking mechanism 2 includes two threaded rods 21, two connecting rods 22 and a screw sleeve 23, the two threaded rods 21 are respectively screwed into the sleeves 14 of the two sets of fixing mechanisms 1; one end of each of the two connecting rods 22 is provided with a blind hole and is inserted into the end part of the threaded rod 21, the other end of each of the two connecting rods 22 is a free end and is provided with an external thread, the rotating directions of the external threads of the two connecting rods 22 are opposite, and the rotating directions of the external threads of the connecting rods 22 are the same as the rotating directions of the threads of the threaded rod 21; the screwing sleeve 23 is a cylindrical component with two through ends, the left half part and the right half part in the axial direction are respectively provided with internal threads with opposite screwing directions, the internal threads of the left half part and the right half part are respectively in threaded connection with the external threads of the two connecting rods 22, the screwing sleeve 23 is screwed to adjust the distance between the two connecting rods 22, the distance between the two groups of fixing mechanisms 1 is adjusted by means of threaded connection between the threaded rod 21 and the sleeve 14, the through hole 6 in the cover body 3 is aligned with the screwing end of the screwing sleeve 23, and the screwing sleeve 23 can be screwed through the through hole 6.
In this embodiment, firstly, the connection position between the slider 13 and the slide rail 12 is adjustable, secondly, the threaded connection position between the threaded rod 21 and the sleeve 14 is adjustable, thirdly, the depth of the threaded rod 21 inserted into the blind hole of the connecting rod 22 is adjustable, fourthly, the threaded connection position between the screwing sleeve 23 and the connecting rod 22 is adjustable, through the four adjusting modes, the distance between the two sets of fixing mechanisms 1 can be adjusted, further, the fixed distance between the two power cables 4 can be locked, the stability of connection of the cable joint 5 is ensured, namely, the two power cables 4 cannot slip from the cable joint 5, run out and the like, and the connection strength and the effect are ensured.
The one end of two connecting rods 22 is equipped with the blind hole and pegs graft with the tip of threaded rod 21, wears to be equipped with the jackscrew on connecting rod 22, can the grafting degree of depth of limiting threaded rod 21 in the blind hole.
In some embodiments, referring to fig. 1 to 6, the cover 3 includes a first fastening portion 31, a second fastening portion 32 and a blocking portion 33, an outer end of the first fastening portion 31 is clamped to an outer side edge of the set of fixing mechanisms 1; the outer end of the second clamping part 32 is clamped on the outer side edge of the other group of fixing mechanisms 1; one end of the blocking part 33 is elastically connected with the inner end of the first clamping part 31 through a plurality of elastic components 34, the other end of the blocking part is elastically connected with the inner end of the second clamping part 32 through a plurality of elastic components 34, the elastic components 34 are arranged at intervals, through holes 6 are defined by gaps among the elastic components 34, and the length of the cover body 3 is adjusted by means of elastic expansion and contraction of the elastic components 34.
The end parts of the first clamping part 31 and the second clamping part 32 are of hook-shaped structures, can be clamped and fixed to the outer side edge of the hoop 11, and the length of the cover body 3 can be adjusted by arranging the elastic component 34 which can stretch out and draw back, so that the butt joint protection device is suitable for butt joint protection of electric power cables 4 of different specifications and different outer diameters. The blocking portion 33 is an arc-shaped plate-shaped structure, two ends of the blocking portion are respectively connected with the first clamping portion 31 and the second clamping portion 32, and the elastic component 34 is a tension spring. The through hole 6 is a gap between two adjacent elastic members 34. The first fastening part 31, the second fastening part 32 and the blocking part 33 are uniform in thickness.
In some embodiments, referring to fig. 1 to 6, the elastic assembly 34 includes a plurality of sets of spring members, one end of the elastic member is fixedly connected to the inner end of the first fastening portion 31, the other end of the elastic member is fixedly connected to one end of the blocking portion 33, the elastic member is used for tensioning the first fastening portion 31 and the blocking portion 33 to approach to the middle of the two, and the through hole 6 is further disposed on the blocking portion 33; the upper end of the blocking part 33 is hinged with a sealing cover 7 for sealing the through holes 6, after the plurality of through holes 6 are sealed by the plurality of sealing covers 7, the inner part of the cover body 3 is a sealed cavity and is used for blocking the impact force generated after the cable joint 5 is ignited and exploded from diffusing to the outer part of the cover body 3.
Specifically, the elastic part is a tension spring. The buckle 8 used for being matched and clamped and locked with the free end of the sealing cover 7 is arranged on the first clamping part 31 or the second clamping part 32 or the blocking part 33, the through hole 6 can be locked by the sealing cover 7 after the buckle 8 is clamped and connected with the free end of the sealing cover 7, the through hole 6 of the sealing cover 7 is in a blocking state, a closed cavity can be formed inside the cover body 3, and therefore the impact force cannot be diffused to the outside of the cover body 3 after the cable joint 5 is ignited and exploded, and the accident expansion is prevented. The invention not only plays a role in heat dissipation of the cable joint 5, but also prevents impact force from being diffused to the outside after the cable joint 5 is ignited and exploded, controls the impact force of explosion in the shell, and prevents high-temperature explosive fragments from being thrown to other surrounding equipment to influence the normal use of other equipment.
In some embodiments, referring to fig. 1 to 6, the hoop 11 includes an upper housing 111, a lower housing 112 and a plurality of locking members 113, the upper housing 111 is in a semicircular structure and covers one side of the power cable 4; the lower shell 112 is in a semicircular structure, covers and buckles the other side of the power cable 4, is matched with the upper shell 111, covers and buckles to form a circular cavity, and wraps the power cable 4; a plurality of locking members 113 are disposed through the upper casing 111 and the lower casing 112 for connecting and locking the upper casing 111 and the lower casing 112, and the connection beam 15 is disposed on the upper casing 111 or the lower casing 112.
Specifically, be equipped with a plurality of barb structures on the arc inner wall of last casing 111 and lower casing 112, barb structure and the outer surface contact of electric power cable 4 can increase frictional force, prevents that electric power cable 4 from slipping in the staple bolt 11.
In some embodiments, referring to fig. 1 to 6, each of the upper housing 111 and the lower housing 112 includes a plurality of hinge plates 1111, a plurality of grooves 1112, and a flame retardant material 1113, the hinge plates 1111 are all arc-shaped and are hinged end to end in sequence to form a semicircular structure, and the locking member 113 is disposed on the hinge plate 1111 at the end portion; the grooves 1112 are correspondingly arranged on the inner side surfaces of the hinge plates 1111 one by one; a flame retardant material 1113 is filled in the plurality of grooves 1112 for preventing the power cable 4 from being ignited.
Specifically, the flame retardant material 1113 can be made of materials in the prior art, so that the flame retardant material can play a role in fire retardation and combustion, and the flame retardant material 1113 can timely play a role in flame retardation to extinguish flame. The number of the grooves 1112 is the same as the number of the hinge plates 1111, or twice or three times the number of the hinge plates 1111, that is, two or three grooves 1112 are provided in one hinge plate 1111.
In some embodiments, referring to fig. 1 to 6, the cable connector 5 is further provided with an anchor ear 11, the anchor ear 11 is wrapped on the outer circumference of the cable connector 5, the flame retardant material 1113 in the anchor ear 11 is used for preventing the cable connector 5 from igniting and burning, and the hinged portion of the hinge plates 1111 on the anchor ear 11 is used for dissipating heat of the cable connector 5.
In some embodiments, referring to fig. 1 to 6, a plurality of bag-shaped bags 9 are fixed on the inner wall of the cover 3, the bag-shaped bags 9 are filled with fire extinguishing materials, the power cable 4 or the cable connector 5 ignites the bag-shaped bags 9 after being ignited, and the fire extinguishing materials are dispersed after the bag-shaped bags 9 are broken and are used for preventing the fire from burning.
In particular, the fire extinguishing material can be a fireproof material, and can extinguish a fire source when in fire or flame, so that the fire is prevented from burning and loss is reduced.
In some embodiments, referring to fig. 1 to 6, a thermochromic coating is disposed on an outer wall of the cover 3, and the thermochromic coating is used to change a color when a temperature of the cover 3 rises to indicate that the power cable 4 or the cable connector 5 is in an abnormal state. So that the staff can be reminded in time to take measures in time.
The thermochromic coating is a coating used in the prior art, and can display different colors according to the temperature so as to be convenient for workers to distinguish and treat differently.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (9)
1. Electric power cable is to joint protection device, its characterized in that includes:
the two groups of fixing mechanisms are respectively fixedly arranged on two power cables which are mutually butted, and the end heads of the two power cables are connected through cable joints;
the two ends of the locking mechanisms are respectively in threaded connection with the two fixing mechanisms, the locking mechanisms are used for adjusting the distance between the two fixing mechanisms so as to lock the connection distance of the two power cables, the locking mechanisms are arranged at intervals around the power cables or cable joints in the circumferential direction, and gaps formed among the locking mechanisms are used for heat dissipation of the cable joints; and
the locking mechanism comprises a plurality of locking mechanisms, a plurality of cover bodies and a plurality of locking mechanisms, wherein the plurality of cover bodies are arranged along the outer circumference of a power cable or a cable joint, the plurality of cover bodies are encircled into a ring shape and are buckled outside a plurality of groups of locking mechanisms, the cover bodies are of a long strip-shaped structure, one end of each cover body is clamped on the outer side edge of one group of fixing mechanisms, the other end of each cover body is clamped on the outer side edge of the other group of fixing mechanisms, and the cover bodies are provided with a plurality of through holes for heat dissipation;
the cover body includes:
the outer end of the first clamping part is clamped on the outer side edge of the fixing mechanism;
the outer end of the second clamping part is clamped to the outer side edge of the other group of fixing mechanisms; and
one end of the blocking portion is elastically connected with the inner end of the first clamping portion through a plurality of elastic components, the other end of the blocking portion is elastically connected with the inner end of the second clamping portion through a plurality of elastic components, the elastic components are arranged at intervals, the through holes are formed by surrounding gaps among the elastic components, and the length of the cover body is adjusted by means of elastic expansion and contraction of the elastic components.
2. The power cable butt joint protection device of claim 1 wherein said securing mechanism comprises:
the two groups of hoops are tightly held on the electric cable, and are fixedly connected into a whole through a connecting beam;
the sliding rail is arranged on the outer side of the connecting beam along the length direction of the power cable;
the sliding block is connected to the sliding rail in a sliding mode, a jackscrew penetrates through the sliding block, and the jackscrew is used for locking the sliding block to the sliding rail; and
the sleeve is internally provided with internal threads, is fixedly arranged at the upper end of the sliding block and is in a horizontal shape in the axial direction, the end part of the locking mechanism is in threaded connection with the sleeve, and the distance between the two groups of fixing mechanisms is adjusted by means of the threaded connection between the locking mechanism and the sleeve and the sliding of the sliding block on the sliding rail.
3. The power cable butt joint protection device of claim 2 wherein said latch mechanism comprises:
the two threaded rods are respectively in threaded connection with the sleeves of the two groups of fixing mechanisms;
one end of each connecting rod is provided with a blind hole and is spliced with the end part of the threaded rod, the other end of each connecting rod is a free end and is provided with an external thread, the external thread turning directions of the two connecting rods are opposite, and the external thread turning directions of the connecting rods are the same as the thread turning directions of the threaded rod; and
and the screwing sleeve is a cylindrical component with two through ends, the inner part of the screwing sleeve is provided with inner threads with opposite screwing directions along the left half part and the right half part of the screwing sleeve respectively, the inner threads of the left half part and the right half part are in threaded connection with the outer threads of the connecting rods respectively, the screwing sleeve is used for adjusting the distance between the two connecting rods, the distance between the two fixing mechanisms is adjusted by means of the threaded rod and the threaded connection between the sleeves, the through hole on the cover body is aligned with the screwing end of the screwing sleeve, and the screwing sleeve can be screwed through the through hole.
4. The power cable butt joint protection device according to claim 1 wherein said elastic member comprises a plurality of sets of spring members, one end of said elastic member is fixedly connected to an inner end of said first clamping portion, the other end of said elastic member is fixedly connected to one end of said blocking portion, said elastic member is used for tensioning said first clamping portion and said blocking portion to approach to the middle of the two, and said through hole is further formed in said blocking portion;
the upper end of the blocking part is hinged with a sealing cover for sealing the through holes, the through holes are sealed by the sealing covers, the cover body is internally provided with a sealed cavity and is used for blocking impact force generated after the cable joint is ignited and exploded from diffusing to the outside of the cover body.
5. The power cable butt joint protection device of claim 2 wherein said hoop comprises:
the upper shell is of a semicircular structure and covers and buckles one side of the power cable;
the lower shell is of a semicircular structure, covers and buckles the other side of the power cable, is matched with the upper shell to form a circular cavity and wraps the power cable; and
a plurality of retaining members wear to establish go up the casing with on the casing down, be used for connecting the locking go up the casing with casing down, the tie-beam is located go up the casing or on the casing down.
6. The power cable butt joint protection device of claim 5 wherein said upper housing and said lower housing each comprise:
the plurality of hinged plates are all arc-shaped and are sequentially hinged end to form a semicircular structure, and the locking piece penetrates through the hinged plates at the end parts;
the grooves are correspondingly arranged on the inner side surfaces of the hinge plates one by one; and
and the flame-retardant material is filled in the grooves and used for preventing the power cable from igniting and burning.
7. The electric power cable butt joint protection device as claimed in claim 2, wherein the cable joint is further provided with the anchor ear, the anchor ear is wrapped around the outer circumference of the cable joint, the flame retardant material in the anchor ear is used to prevent the cable joint from burning, and the hinge joint of two adjacent hinge plates on the anchor ear has a gap for dissipating heat from the cable joint.
8. The power cable butt joint protection apparatus as claimed in claim 1 wherein a plurality of bladder-like bags are fixed on the inner wall of the housing, the bladder-like bags are filled with fire extinguishing material, the bladder-like bags are ignited after the power cable or cable butt joint is ignited, and the fire extinguishing material is dispersed and used for preventing fire from burning after the bladder-like bags are broken.
9. The power cable joint protector of claim 1 wherein a thermochromic coating is provided on the outer wall of the cover for changing color when the cover temperature rises to indicate an abnormal condition of the power cable or cable joint.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110601458.2A CN113315084B (en) | 2021-05-31 | 2021-05-31 | Power cable butt joint protection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110601458.2A CN113315084B (en) | 2021-05-31 | 2021-05-31 | Power cable butt joint protection device |
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| CN113315084A CN113315084A (en) | 2021-08-27 |
| CN113315084B true CN113315084B (en) | 2022-07-22 |
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| CN202110601458.2A Active CN113315084B (en) | 2021-05-31 | 2021-05-31 | Power cable butt joint protection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114122797B (en) * | 2021-10-13 | 2022-08-12 | 大连理工大学 | Connector device for gradient distributed clamping experiment test of multilayer lead structure |
| CN114469357B (en) * | 2022-01-24 | 2023-09-15 | 重庆金山医疗机器人有限公司 | Module mounting structure and method for swinging wiring of main hand driving shaft |
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| CN113315084A (en) | 2021-08-27 |
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