CN109950709B - Connection assembly and connection method for coaxial cable and coaxial cable system - Google Patents
Connection assembly and connection method for coaxial cable and coaxial cable system Download PDFInfo
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- CN109950709B CN109950709B CN201910279590.9A CN201910279590A CN109950709B CN 109950709 B CN109950709 B CN 109950709B CN 201910279590 A CN201910279590 A CN 201910279590A CN 109950709 B CN109950709 B CN 109950709B
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Abstract
The invention relates to a connection component for a coaxial cable, wherein the coaxial cable comprises a first cable and a second cable which are coaxial and arranged at intervals, and the connection component comprises a crimping pipe, a first protection structure, a conductive connecting piece and a second protection structure. The inner cores of the first cable and the second cable can be coaxially connected together through the crimping pipe, the outer cores of the first cable and the second cable are connected together through the conductive connecting piece, and the conductive connecting piece is sleeved on the first protection structure. The outer cores of the first cable and the second cable can be arranged on the outer side of the conductive connecting piece in a surrounding mode respectively, and compared with the traditional mode that the inner core and the outer core are respectively twisted into two bundles, the size of a connection position is effectively reduced. The inner core and the outer core are not required to be branched, so that the difficulty of protection treatment is reduced, and the conditions that the joint is low in waterproof performance and easy to cause faults due to improper treatment are avoided. The invention also relates to a connection method for the coaxial cable and a coaxial cable system.
Description
Technical Field
The invention relates to the technical field of high-voltage cable maintenance, in particular to a connection assembly and a connection method for a coaxial cable and a coaxial cable system.
Background
The high-voltage cable has a certain service life, and the failure rate of the high-voltage cable is increased along with the increase of the service life. For the coaxial cable, the coaxial cable is led out from the middle joint of the high-voltage cable, and the middle joint of the high-voltage cable is not allowed to be disassembled due to the waterproof sealing, so that when the coaxial cable breaks down, the whole coaxial cable cannot be replaced, only the broken section can be cut off, and a new section of the coaxial cable is refuted. However, the existing new and old coaxial cable connection has high operation requirements, and the connection part is low in waterproof performance due to improper treatment, so that faults are easily caused.
Disclosure of Invention
Therefore, it is necessary to provide a docking assembly for coaxial cable, a docking method and a coaxial cable system, which can effectively reduce the difficulty of operation of coaxial cable docking, aiming at the problems that the existing new and old coaxial cable docking has high operation requirements, the waterproof performance of the docked part is low due to improper treatment, and faults are easily caused.
A docking assembly for a coaxial cable, the coaxial cable including first and second cables coaxially and spaced apart, the docking assembly for a coaxial cable comprising:
the compression joint pipe is arranged along the longitudinal direction of the coaxial cable, and two ends of the compression joint pipe are respectively used for allowing the inner core of the first cable and the inner core of the second cable to extend into the compression joint pipe so as to fix the inner cores of the first cable and the second cable relative to the compression joint pipe;
the first protection structure is arranged along the longitudinal direction of the coaxial cable and covers the crimping pipe, and the inner core of the first cable and the inner core of the second cable are positioned outside the crimping pipe;
the conductive connecting piece is sleeved on the first protective structure, and outer cores of the first cable and the second cable are relatively and fixedly wrapped on the conductive connecting piece;
and the second protective structure is arranged along the longitudinal direction of the coaxial cable and covers the conductive connecting piece and the outer cores of the first cable and the second cable.
Through setting up foretell be used for coaxial cable refute and connect the subassembly, the inner core accessible crimping pipe coaxial coupling of first cable and second cable is in the same place, and the outer core of first cable and second cable links together through electrically conductive connecting piece, and electrically conductive connecting piece cover is located first protective structure. So, can encircle the outer core of first cable and second cable respectively and set up in the outside of electrically conductive connecting piece for the inner core and the outer core of overlap joint still keep coaxial, compare in traditional twisting inner core and outer core into two bundles respectively, reduced the bodily form of overlap joint effectively. Simultaneously, separate through first protective structure between inner core and the outer core, outer core and external environment separate through second protective structure and come, and the inner core all need not the bifurcation with outer core, has made things convenient for the protection of joint to handle, has reduced the degree of difficulty that the protection was handled to avoided leading to the low and easy condition that causes the trouble of joint waterproof performance because of handling the mistake easily.
In one of them embodiment, refute and connect subassembly still includes the retaining member, the retaining member be located electrically conductive connecting piece with between the second protective structure, and follow the circumferential direction of crimping pipe is around locating electrically conductive connecting piece deviates from one side of first protective structure, the retaining member be used for respectively with the outer core locking of first cable and second cable in electrically conductive connecting piece.
In one embodiment, the locking member is a copper locking wire.
In one embodiment, the conductive connecting member has a first end and a second end opposite to each other in a circumferential direction of the crimping tube, and the first end and the second end are spaced by a preset gap.
In one embodiment, the length of the conductive connector in the longitudinal direction of the coaxial cable is less than the length of the crimp tube in the longitudinal direction of the coaxial cable.
A docking method for coaxial cables, comprising the steps of:
a first cable or a second cable is arranged in a conductive connecting piece in a penetrating mode, and one end of the first cable or the second cable extends out of the conductive connecting piece;
respectively carrying out open-line processing on the first cable and the second cable so as to expose inner cores of the first cable and the second cable for a preset length;
arranging the inner cores of the first cable and the second cable coaxially, and fixedly connecting the inner cores of the first cable and the second cable through crimping pipes respectively;
forming a first protective structure on the outer side of the crimping pipe;
moving the conductive connection onto the first guard structure;
fixedly cladding the outer cores of the first cable and the second cable to the conductive connecting piece relatively;
and forming a second protective structure on the outer side of the conductive connecting piece.
In one embodiment, a side surface of the conductive connecting piece facing away from the first protective structure is provided with a first area and a second area which are opposite along the lengthwise direction of the coaxial cable;
the outer core of the first cable is relatively and fixedly coated in the first area of the conductive connecting piece, and the outer cores of the first cable are uniformly distributed at intervals along the circumferential direction of the crimping pipe;
the outer core of the second cable is relatively and fixedly coated in the second area of the conductive connecting piece, and the outer core of the second cable is uniformly distributed at intervals along the circumferential direction of the crimping pipe.
In one embodiment, the step of fixedly covering the outer cores of the first and second cables with respect to the conductive connecting member further comprises the steps of:
the outer cores of the first cable and the second cable are respectively locked on the conductive connecting piece through locking pieces;
and fixedly connecting the locking piece, the conductive connecting piece and the outer cores of the first cable and the second cable together through lead welding.
In one embodiment, the predetermined length is 40 mm to 60 mm.
A coaxial cable system, comprising a first cable, a second cable and the docking assembly for coaxial cable described in the above embodiments, wherein one end of the docking assembly is fixedly connected to the first cable, and the other end is fixedly connected to the second cable.
Drawings
Fig. 1 is a schematic structural diagram of a docking assembly for coaxial cables according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view at a-a of the docking assembly shown in fig. 1;
fig. 3 is a flowchart of a docking method for coaxial cables according to an embodiment of the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
In order to facilitate understanding of the technical solution of the present invention, a description is given of problems of the conventional coaxial cable connection method: when the existing coaxial cable fails, an inner core and an outer core of a new cable and an old cable are respectively twisted into a bundle to be connected together, then the two bundles are respectively crimped through two copper crimping pipes, and then insulation tapes, water blocking tapes and PVC tapes are directly wrapped on the surfaces of the two copper crimping pipes. The body shape of the connection part is increased due to the connection, the inner core and the outer core of the cable are twisted together after being branched, branched openings are formed between the inner core and the outer core at two ends of the new coaxial cable and the old coaxial cable, the protection treatment at the branched openings is complex, the treatment requirement is high, and if the treatment is not good, the waterproof performance of the connection part is low, and the fault is easily caused.
As shown in fig. 1 and 2, a docking assembly 10 for coaxial cables according to an embodiment of the present invention is used for maintaining coaxial cables. Specifically, the coaxial cable includes a first cable and a second cable which are coaxially and spaced apart, and the docking assembly 10 for coaxial cable is used for docking between the first cable and the second cable.
The docking assembly 10 for coaxial cables includes a crimp tube 12, a first shielding structure 14, a conductive connector 16, and a second shielding structure 18.
The crimping tube 12 is disposed along a longitudinal direction of the coaxial cable, and two ends of the crimping tube 12 are respectively used for the inner core 40 of the first cable 20 and the inner core 40 of the second cable 30 to extend into, so that the inner core 40 of the first cable 20 and the inner core 40 of the second cable 30 are fixed relative to the crimping tube 12. The first shielding structure 14 is disposed along a longitudinal direction of the coaxial cable, and covers the crimp tube 12 and portions of the inner core 40 of the first cable 20 and the inner core 40 of the second cable 30 outside the crimp tube 12.
The conductive connecting member 16 is sleeved on the first protective structure 14, and the outer cores 50 of the first cable 20 and the second cable 30 are both relatively and fixedly wrapped around the conductive connecting member 16. The second shielding structure 18 is disposed along a longitudinal direction of the coaxial cable and covers the conductive connecting member 16, the outer core of the first cable 20, and the outer core 50 of the second cable 30.
By providing the above-mentioned docking assembly for coaxial cables, the inner cores 40 of the first and second cables 20 and 30 can be coaxially connected together by the crimping tube 12, the outer cores 50 of the first and second cables 20 and 30 are connected together by the conductive connecting member 16, and the conductive connecting member 16 is sleeved on the first protective structure 14. Thus, the outer cores 50 of the first cable 20 and the second cable 30 can be respectively disposed outside the conductive connector 16 around the conductive connector 16, so that the inner core 40 and the outer core 50 at the connection position still remain coaxial, and compared with the conventional method in which the inner core 40 and the outer core 50 are respectively twisted into two bundles, the size of the connection position is effectively reduced. Meanwhile, the inner core 40 and the outer core 50 are separated through the first protection structure 14, the outer core 50 and the external environment are separated through the second protection structure 18, the inner core 40 and the outer core 50 do not need to be forked, protection treatment at joints is facilitated, difficulty of protection treatment is reduced, and therefore the situation that water resistance at the joints is low and faults are easily caused due to improper treatment is avoided.
It should be noted that the first cable 20 and the second cable 30 are two-section cables formed after the old cable is cut, and the coaxial cable sequentially includes an inner core 40, an inner insulating layer, an outer core 50, and an outer insulating layer from inside to outside, so that the cable needs to be opened before the inner core 40 is connected to the coaxial cable, so that the inner core 40 is exposed. In practice, the inner core 40 is exposed to a length of 40 mm to 60 mm in the longitudinal direction of the coaxial cable. Preferably, the inner core 40 is exposed to a length of 50 mm in the longitudinal direction of the coaxial cable.
Meanwhile, for the coaxial cable for transmitting high voltage, the number of the inner cores 40 in each coaxial cable may be multiple, so when the inner cores 40 of the first cable 20 and the second cable 30 are connected by using the crimping pipe 12, the corresponding inner cores 40 may be coaxially arranged and then crimped.
Note that, in fig. 1, the reference numerals of the inner core 40 and the outer core 50 are the same for the inner core 40 and the outer core 50 of the first cable 20 and the second cable 30, since the first cable 20 and the second cable 30 are two segments formed by cutting a part of the same coaxial cable.
In some embodiments, the crimp tube 12 is a copper tube such that the inner core 40 of the first cable 20 and the inner core 40 of the second cable 30 are electrically connected by the crimp tube 12. Further, the length of the crimping tube 12 in the longitudinal direction of the coaxial cable is smaller than the sum of the exposed lengths of the inner cores 40 of the first cable 20 and the second cable 30, that is, the crimping tube 12 crimps the inner cores 40 of the first cable 20 and the second cable 30, even if the inner cores 40 of the first cable 20 and the second cable 30 abut in the crimping tube 12, only by ensuring that the middle position of the crimping tube 12 is the abutting position of the inner cores 40 of the first cable 20 and the second cable 30, the two ends of the crimping tube 12 do not extend to the inner insulating layer of the first cable 20 or the second cable 30.
In practice, the outer diameter of the crimp tube 12 is smaller than the radial dimension of the inner insulation of the first or second cable 20, 30. In this way, when the first shielding structure 14 is provided outside the crimp tube 12, an excessively large protrusion is not formed at the crimp tube 12. It should be noted that, since the crimp tube 12 is also conductive and the crimp tube 12 does not cover all the exposed inner cores 40, in order to ensure that all the inner cores 40 and the crimp tube 12 are insulated, both ends of the first protective structure 14 need to extend to the inner insulating layers of the first cable 20 and the second cable 30, that is, the first protective structure 14 covers the portion of the inner core 40 outside the crimp tube 12.
In some embodiments, the first protective structure 14 includes an insulating layer, a waterproof layer, a fireproof layer, and a plastic layer from inside to outside in order to ensure that the crimp tube 12 and the exposed inner core 40 are completely isolated from the outside, i.e., the outer core 50 and the inner core 40 are insulated from each other, and the outer environment is prevented from affecting the inner core 40. Further, the insulating layer is an insulating tape, the waterproof layer is a waterproof tape, the fireproof layer is a fireproof tape, the plastic layer is a PVC tape, the insulating tape is laid from the inner insulating layer of the first cable 20 to the inner insulating layer of the second cable 30, and the tape tests of other layers sequentially cover the insulating tape.
In practical application, each layer of adhesive tape is lapped and wrapped by half, taking the insulating adhesive tape as an example of wrapping on the crimping tube 12, the insulating adhesive tape is cut after being wound around the crimping tube 12 for one circle, then the winding is continued on the crimping tube 12, and one side edge of the next circle of insulating adhesive tape is located in the middle of the previous circle of insulating adhesive tape. Thus, one turn extends from the inner insulation of the first cable 20 to the inner insulation of the second cable 30
In some embodiments, the conductive connector 16 has first and second ends opposite to each other in the circumferential direction of the crimp tube 12, and the first and second ends are spaced apart by a predetermined gap. Although the conductive connecting element 16 is sleeved outside the first protective layer, the conductive connecting element 16 completely surrounds the first protective layer, that is, if the first protective layer is annular, the conductive connecting element 16 is not a complete annular structure, but an annular structure with a break. In this way, it is effectively avoided that the conductive connection 16 forms eddy currents after the connection is completed and energized, thereby avoiding energy losses and the risk of high temperatures due to eddy currents. Meanwhile, compared with the original mode that the outer cores 50 of the new and old cables are twisted into one bundle, the contact area is effectively increased, heat is not easy to generate, the high-temperature risk is further reduced, and the reliability is improved.
Further, the predetermined gap is at least greater than 2 mm. Of course, the predetermined gap may be determined by the energizing voltage within the cable, and too small a predetermined gap may still result in eddy current formation in the conductive connection 16. Specifically, the conductive connecting member 16 has a preferably arc-like shape in cross section perpendicular to the longitudinal direction of the coaxial cable. The longitudinal direction of the coaxial cable is the vertical direction shown in fig. 1.
In some embodiments, the outer diameter of the conductive connecting member 16 is smaller than the radial dimension of the outer insulating layer in the first cable 20 (or the second cable 30) to ensure that the shape of the outer core 50 does not change much after being wrapped around the outer side of the conductive connecting member 16, that is, after the outer core 50 is wrapped around the side of the conductive connecting member 16 facing away from the first shielding structure 14.
In some embodiments, the docking assembly further includes a locking member 11, the locking member 11 is located between the conductive connecting member 16 and the second shielding structure 18 and located between the outer core 50 wrapped around the conductive connecting member 16 and the second shielding structure 18, and the locking member 11 is disposed around the conductive connecting member 16 along the circumferential direction of the crimping tube 12 for respectively locking the outer cores 50 of the first cable 20 and the second cable 30 to the conductive connecting member 16.
Specifically, the locking member 11 is a locking copper wire. After the outer core 50 is wrapped around the conductive connecting member 16, a locking copper wire is wound around the outer core 50 to lock the outer core 50 to the first and second sides of the conductive connecting member 16. Because the cross-sectional area of the copper wire is small, the generated eddy current is small, and the energy loss is very small.
In some embodiments, the docking assembly further comprises a fixing layer 13, the fixing layer 13 being located between the conductive connector 16 and the second shielding structure 18 and being arranged along the circumferential direction of the crimp tube 12 for fixing the retaining member 11, the conductive connector 16 and the outer cores 50 of the first and second cables 20, 30 together, so that the outer cores 50 of the first and second cables 20, 30 are fixed relative to the conductive connector 16. Further, the fixing layer 13 is a lead layer, and the cross-sectional shape of the lead layer in the direction perpendicular to the longitudinal direction of the coaxial cable is also a major arc shape to avoid forming an eddy current. Specifically, after the locking copper wire locks the outer core 50 to the conductive connecting member 16, a lead layer is formed by performing lead bonding on the outside of the conductive connecting member 16, and the locking copper wire, the outer core 50 and the conductive connecting member 16 are fixed together.
In some embodiments, the length of the conductive connector 16 in the lengthwise direction of the coaxial cable is less than the length of the crimp tube 12 in the lengthwise direction of the coaxial cable. The conductive connector 16 is an outer core 50 for connecting the first cable 20 and the second cable 30, and the outer core 50 is fixed on the conductive connector 16 through the locking member 11 and the fixing layer 13, so that the outer core 50 is only required to be lapped on the conductive connector, and the length of the conductive connector 16 along the longitudinal direction of the coaxial cable is not required to be too long.
Further, a side surface of the conductive connecting member 16 facing away from the first shielding structure 14 has a first area and a second area oppositely disposed along a longitudinal direction of the coaxial cable, the outer core 50 of the first cable 20 is wrapped on the first area of the conductive connecting member 16, and the outer core 50 of the second cable 30 is wrapped on the second area of the conductive connecting member 16. Of course, the first area and the second area may be the areas at the edges of the surface along the longitudinal direction of the coaxial cable, and the first area and the second area are not separated; the first area and the second area may also each occupy half of the surface, i.e. there is no space between the first area and the second area.
It will also be appreciated that the conductive connector 16 cannot be installed after crimping of the crimp tube 12, but rather, the inner core 40 and the inner insulating layer of the first or second cable 20, 30 are placed inside the conductive connector 16 before crimping of the inner core 40, and then the inner core 40 is crimped. Since the outer diameter of the conductive connecting member 16 is smaller than the radial dimension of the outer insulating layer, after the inner core 40 is inserted into the conductive connecting member 16, the conductive connecting member 16 can only move between the outer insulating layers of the first cable 20 and the second cable 30, and if the conductive connecting member 16 is too long, one end of the conductive connecting member 16 may abut against the outer insulating layer of the first cable 20 (or the second cable 30) and the other end may extend to the wrapping area of the first protective layer, which may affect the formation of the first protective layer.
Further, the length of the conductive connector 16 in the longitudinal direction of the coaxial cable is at least half of the length of the crimp tube 12 in the longitudinal direction of the coaxial cable. Of course, the length of the conductive connection member 16 cannot be too short, which may cause the outer core 50 to be connected to the outside of the conductive connection member 16 in an insufficient length, which may result in the loose connection of the outer core 50 to the conductive connection member 16. Specifically, the middle position of the conductive connecting member 16 in the longitudinal direction of the coaxial cable coincides with the middle position of the crimp tube 12 in the longitudinal direction of the coaxial cable such that both ends of the conductive connecting member 16 are the same distance from the corresponding both ends of the crimp tube 12.
In some embodiments, the second protective structure 18 comprises an insulating layer, a waterproof layer and a plastic layer from inside to outside in sequence, so as to ensure that the crimp tube 12 and the exposed inner core 40 are completely isolated from the outside, thereby achieving both insulation and preventing the influence of the external environment on the inner core 40. Specifically, the insulating layer is an insulating tape, the waterproof layer is a waterproof tape, the plastic layer is a PVC tape, the insulating tape is laid from the outer insulating layer of the first cable 20 to the outer insulating layer of the second cable 30, and the tape tests of other layers sequentially cover the insulating tape. It is understood that the second protective structure 18 is similar to the first protective structure 14 and is formed by winding the adhesive tape, so the overlapping wrapping manner is the same, and therefore, the description thereof is omitted.
Of course, the first protective structure 14 and the second protective structure 18 in the above embodiments do not only function as a shield, but also function as a connection, both ends of the first protective structure 14 extend to the inner insulating layers of the first cable 20 and the second cable 30, and both ends of the second protective structure 18 extend to the outer insulating layers of the first cable 20 and the second cable 30, so that the connection stability can be ensured while the protective function is performed.
Referring to fig. 3, based on the above-mentioned docking assembly for coaxial cables, the present invention also relates to a docking method for coaxial cables, which includes the following steps:
s110, the first cable 20 or the second cable 30 is inserted into the conductive connecting member 16, and one end of the first cable 20 or the second cable 30 extends out of the conductive connecting member 16.
In the above embodiment, it has been explained that, in order to prevent the conductive connecting member 16 from being inserted after the crimping of the core 40, the conductive connecting member 16 can be fitted over the first cable 20 or the second cable 30 only before the crimping of the core 40 is performed. Specifically, the end of the first cable 20 or the second cable 30 is cut so that the inner insulating layer is exposed, and then the conductive connector 16 is fitted over the inner insulating layer.
S120, the first cable 20 and the second cable 30 are respectively opened, so that the inner cores 40 of the first cable 20 and the second cable 30 are exposed for a predetermined length.
Further, for a cable sheathed with the conductive connector 16, only the inner insulating layer needs to be cut open, while for another cable not sheathed with the conductive connector 16, the entire end portion needs to be cut open to expose the inner core 40. Specifically, the preset length is 40 mm to 60 mm, and preferably 50 mm.
S130, the first cable 20 and the inner core 40 of the second cable 30 are coaxially disposed, and are respectively and fixedly connected to the inner cores 40 of the first cable 20 and the second cable 30 through the crimping tube 12.
S140, forming a first shielding structure 14 outside the crimp tube 12.
Specifically, an insulating tape, a waterproof tape, a fireproof tape and a PVC tape are sequentially wound around the outside of the crimping pipe 12 to form the first protective structure 14.
S150, the conductive connecting member 16 is moved to the first shielding structure 14.
Specifically, the conductive connecting member 16 is moved to the middle position of the crimp tube 12, and the distances from both ends of the conductive connecting member 16 to the corresponding both ends of the crimp tube 12 are ensured to be the same.
S160, the outer cores 50 of the first cable 20 and the second cable 30 are fixedly wrapped around the conductive connector 16.
Further, the outer cores 50 of the first cable 20 and the second cable 30 are uniformly distributed at intervals on the surface of one side of the conductive connecting piece 16 away from the first protective structure 14 along the circumferential direction of the crimping pipe 12, the outer core 50 of the first cable 20 is distributed in a first area, and the outer core 50 of the second cable 30 is distributed in a second area; the outer cores 50 of the first cable 20 and the second cable 30 are respectively locked to the conductive connecting member 16 by the locking member 11, and then the locking member 11, the conductive connecting member 16 and the outer cores 50 of the first cable 20 and the second cable 30 are fixedly connected together by lead welding.
It is to be understood that the conductive connecting member 16 is a ring structure having a break, and thus the above-described uniform spacing arrangement should be understood in that the outer cores 50 are disposed on the conductive connecting member 16 first, and then the outer cores 50 are uniformly spaced on the conductive connecting member 16. Of course, the spacing between the outer cores 50 may be zero.
Specifically, the outer core 50 is respectively lapped on the first region and the second region of the conductive connecting member 16, and then wound and locked using a locking screw, and finally lead-welding is performed on the outer side of the conductive connecting member 16 to form a lead layer. In this manner, the outer core 50 is stably connected to the conductive connecting member 16.
And S170, forming a second protective structure 18 on the outer side of the conductive connecting piece 16.
Further, the second protective structure 18 covers the conductive connecting member 16 and the outer cores of the first cable 20 and the second cable 30.
Specifically, the insulating tape, the waterproof tape and the PVC tape are sequentially wound on the outer side of the lead layer, and the insulating tape at the bottom layer extends to the outer insulating layers of the first cable 20 and the second cable 30 to be connected with the first cable 20 and the second cable 30, and completely seals the conductive connecting member 16, the locking member 18, the fixing layer 19 and the outer core 50.
By adopting the above-mentioned docking method for coaxial cables, the inner cores 40 of the first cable 20 and the second cable 30 can be coaxially connected together through the crimping tube 12, the outer cores 50 of the first cable 20 and the second cable 30 are connected together through the conductive connecting member 16, and the outer cores 50 of the first cable 20 and the second cable 30 can be respectively arranged outside the conductive connecting member 16 around the conductive connecting member 16, so that compared with the conventional method of respectively twisting the inner cores 40 and the outer cores 50 into two bundles, the body shape of the docking position is effectively reduced. Meanwhile, the inner core 40 and the outer core 50 do not need to be forked, so that the protection treatment at the joint is facilitated, the difficulty of the protection treatment is reduced, the conditions that the waterproof performance at the joint is low and faults are easily caused due to improper treatment are avoided, and the reliability is high. In addition, the manufacturing time is short by adopting the connection method, and the first-aid repair time is saved.
The utility model provides a coaxial cable system, includes first cable, second cable and the connection subassembly that is used for coaxial cable in the above-mentioned embodiment, connects subassembly one end fixed connection in first cable, and other end fixed connection in second cable to realize being connected between first cable and the second cable.
Compared with the prior art, the connection component and the connection method for the coaxial cable and the coaxial cable system provided by the invention have the following advantages:
1) the inner cores of the first cable and the second cable can be coaxially connected together through a crimping pipe, while the outer cores can be connected through a generally annular conductive connecting piece, and the body shape of a connection part is small in change;
2) the inner core and the outer core are not branched, so that the protection treatment at the joint is facilitated, the difficulty of the protection treatment is reduced, the conditions that the waterproof performance at the joint is low and faults are easily caused due to improper treatment are avoided, and the reliability is high;
3) the contact area between the outer core and the conductive connecting piece is large, so that the high-temperature risk is reduced, and the reliability is improved;
4) the manufacturing time is short, and the first-aid repair time is saved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. The utility model provides a refute and connect subassembly for coaxial cable, coaxial cable include coaxial and interval first cable and the second cable of laying, its characterized in that, a refute and connect subassembly for coaxial cable includes:
the compression joint pipe is arranged along the longitudinal direction of the coaxial cable, and two ends of the compression joint pipe are respectively used for allowing the inner core of the first cable and the inner core of the second cable to extend into the compression joint pipe so as to fix the inner cores of the first cable and the second cable relative to the compression joint pipe;
the first protection structure is arranged along the longitudinal direction of the coaxial cable and covers the crimping pipe, and the inner core of the first cable and the inner core of the second cable are positioned outside the crimping pipe;
the conductive connecting piece is sleeved on the first protective structure, and outer cores of the first cable and the second cable are relatively and fixedly wrapped on the conductive connecting piece;
the second protection structure is arranged along the longitudinal direction of the coaxial cable and covers the conductive connecting piece and the outer cores of the first cable and the second cable;
the conductive connecting piece is provided with a first end and a second end which are opposite to each other along the circumferential direction of the crimping pipe, and a preset gap is arranged between the first end and the second end.
2. The connection assembly for coaxial cables of claim 1, further comprising a retaining member, wherein the retaining member is located between the conductive connecting member and the second shielding structure, and is along the circumferential direction of the crimping pipe is around locating the conductive connecting member deviates from one side of the first shielding structure, and the retaining member is used for respectively locking the outer core of the first cable and the second cable in the conductive connecting member.
3. A docking assembly for coaxial cables according to claim 2 wherein the retaining member is a copper locking wire.
4. The docking assembly for a coaxial cable of claim 1, wherein a length of the conductive connector in a lengthwise direction of the coaxial cable is less than a length of the crimp tube in the lengthwise direction of the coaxial cable.
5. A method for docking a coaxial cable, comprising the steps of:
a first cable or a second cable is arranged in a conductive connecting piece in a penetrating mode, and one end of the first cable or the second cable extends out of the conductive connecting piece;
respectively carrying out open-line processing on the first cable and the second cable so as to expose inner cores of the first cable and the second cable for a preset length;
arranging the inner cores of the first cable and the second cable coaxially, and fixedly connecting the inner cores of the first cable and the second cable through crimping pipes respectively;
forming a first protective structure on the outer side of the crimping pipe;
moving the conductive connection onto the first guard structure;
fixedly cladding the outer cores of the first cable and the second cable to the conductive connecting piece relatively;
forming a second protective structure on the outer side of the conductive connecting piece;
the conductive connecting piece is provided with a first end and a second end which are opposite to each other along the circumferential direction of the crimping pipe, and a preset gap is arranged between the first end and the second end.
6. The docking method for coaxial cables of claim 5, wherein a side surface of the conductive connector facing away from the first shielding structure has first and second opposing regions along a lengthwise direction of the coaxial cable;
the outer core of the first cable is relatively and fixedly coated in the first area of the conductive connecting piece, and the outer cores of the first cable are uniformly distributed at intervals along the circumferential direction of the crimping pipe;
the outer core of the second cable is relatively and fixedly coated in the second area of the conductive connecting piece, and the outer core of the second cable is uniformly distributed at intervals along the circumferential direction of the crimping pipe.
7. The docking method for coaxial cables of claim 5, wherein fixedly wrapping the outer cores of the first and second cables relative to the conductive connector further comprises the steps of:
the outer cores of the first cable and the second cable are respectively locked on the conductive connecting piece through locking pieces;
and fixedly connecting the locking piece, the conductive connecting piece and the outer cores of the first cable and the second cable together through lead welding.
8. The docking method for coaxial cables of claim 5, wherein the predetermined length is 40 mm to 60 mm.
9. A coaxial cable system comprising a first cable, a second cable and the docking assembly for coaxial cable of any of claims 1-4, the docking assembly fixedly connected at one end to the first cable and at the other end to the second cable.
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| IT1006692B (en) * | 1973-12-31 | 1976-10-20 | Amp Italia | CONNECTOR FOR COAXIAL CABLES |
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| CN101877439B (en) * | 2009-12-25 | 2014-08-13 | 江苏省电力公司无锡供电公司 | Coaxial cable dedicated connector |
| CN202585777U (en) * | 2012-02-23 | 2012-12-05 | 广东电网公司佛山供电局 | Coaxial cable intermediate joint |
| CN207651690U (en) * | 2018-01-04 | 2018-07-24 | 孙钦武 | Coaxial fitting |
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