CN115021172B - Cross interconnection box and cross interconnection system capable of preventing misconnection - Google Patents
Cross interconnection box and cross interconnection system capable of preventing misconnection Download PDFInfo
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- CN115021172B CN115021172B CN202210494760.7A CN202210494760A CN115021172B CN 115021172 B CN115021172 B CN 115021172B CN 202210494760 A CN202210494760 A CN 202210494760A CN 115021172 B CN115021172 B CN 115021172B
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- 238000009434 installation Methods 0.000 claims description 13
- 230000001012 protector Effects 0.000 claims description 7
- 230000017105 transposition Effects 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 5
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- 238000009413 insulation Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 6
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- YTPUIQCGRWDPTM-UHFFFAOYSA-N 2-acetyloxybenzoic acid;5-(2-methylpropyl)-5-prop-2-enyl-1,3-diazinane-2,4,6-trione;1,3,7-trimethylpurine-2,6-dione Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O.CN1C(=O)N(C)C(=O)C2=C1N=CN2C.CC(C)CC1(CC=C)C(=O)NC(=O)NC1=O YTPUIQCGRWDPTM-UHFFFAOYSA-N 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
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/64—Means for preventing incorrect coupling
- H01R13/642—Means for preventing incorrect coupling by position or shape of contact members
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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
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/18—Distribution boxes; Connection or junction boxes providing line outlets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cable Accessories (AREA)
Abstract
The application relates to the technical field of high-voltage cable circuits, in particular to a cross-connection box capable of preventing misconnection, which comprises three first connecting terminals and three second connecting terminals, wherein the three first connecting terminals are respectively used for being electrically connected with outer core conductors of three coaxial cables, the three second connecting terminals are respectively used for being electrically connected with inner core conductors of three coaxial cables, the first connecting terminals are also sequentially and alternately electrically connected with the second connecting terminals in a clockwise direction through connecting copper bars, and mounting planes are formed on the first connecting terminals and the second connecting terminals which are electrically connected with two ends of each connecting copper bar. According to the cross interconnection box provided by the application, the same two cross interconnection boxes can ensure that a complex cross interconnection system can avoid the possibility of errors caused by design, construction and the like, and the correctness of a complex grounding system in a long cable is effectively ensured, so that the safe and stable operation of a cable line is ensured.
Description
Technical Field
The application relates to the technical field of high-voltage cable lines, in particular to a cross interconnection box capable of preventing misconnection and a cross interconnection system.
Background
With the rapid development of the power grid, in recent years, high-voltage cable lines are increasingly applied, and when a single-core cable is longer, a metal sheath cross-connection grounding mode is generally adopted to reduce the induced voltage of the protective layer.
The method is that a single-core long cable line is divided into a plurality of large sections, each large section is subdivided into three small sections with equal length, insulating joints are arranged between each small section, coaxial cables for metal jackets with different phases are connected in a transposition mode through a crossing method on two sides of an insulating partition board of each insulating joint. A group of protectors are arranged at the insulated joint, and metal jackets at the two ends of each large section are respectively and directly grounded to form a group of crossed interconnection sections. When the cable line is longer, the induced voltage on the metal protective layer is larger, and through the connection mode, the induced voltage on the cable protective layer can be greatly reduced, so that the induced current of the protective layer is reduced, the cable loss is reduced, and the cable transmission capacity is improved.
Because the cross interconnection wiring system needs to realize the cross interconnection of 9 sections of circuits of three cable small sections of three-phase cable metal sheath, the wiring is complex, and a certain error possibility exists. In practice, the wiring errors in the cross-connection boxes may occur in some cases, depending on factors such as the ability of workers to recognize the drawings, the degree of care, the ability of systems to think, design, and site conditions. Once the wiring is wrong, a complete cross interconnection section cannot be formed, the induced voltage of the cross interconnection section cannot be reduced, but can be increased greatly, and the safe and stable operation of a cable line is seriously threatened.
Disclosure of Invention
The application designs the cross-connection box for preventing the error connection, which solves the technical problem that the wiring in the cross-connection box is easy to make mistakes in the prior art, and by adopting the cross-connection box, the error installation caused by factors such as design, construction and the like can be avoided, and the safe and stable operation of a cable line is ensured.
The technical scheme of the application is as follows:
a misconnection proof cross-header comprising:
the three first connecting terminals are respectively used for being electrically connected with the outer core conductors of the three coaxial cables;
the three second connecting terminals are respectively used for being electrically connected with the inner core conductors of the three coaxial cables;
the first connecting terminals are also electrically connected with the second connecting terminals in a sequential transposition way through connecting copper bars in a clockwise direction, and a mounting plane is formed on the first connecting terminal and the second connecting terminal which are electrically connected with the two ends of each connecting copper bar.
Further, the three first connection terminals are arranged in a regular triangle, the three second connection terminals are also arranged in a regular triangle, the plane formed by the three first connection terminals and the plane formed by the three second connection terminals are perpendicular to the insertion direction of the coaxial cable, and the three connection copper bars are all identical metal copper bars.
Further, each first connecting terminal comprises a first clamping piece and a first connecting piece which are electrically connected with each other, each second connecting terminal comprises a second clamping piece and a second connecting piece which are electrically connected with each other, the first clamping piece is used for connecting an outer core conductor of a coaxial cable, the second clamping piece is used for connecting an inner core conductor of the coaxial cable, the first connecting piece is used for being electrically connected with the second connecting piece in an oblique mode in a clockwise direction through the connecting copper bar, and an installation plane for obliquely installing and connecting the copper bar is formed on the first connecting piece and the second connecting piece which are correspondingly electrically connected.
Further, the first connecting piece includes first linkage segment and from the first section of buckling of first linkage segment slant, the second linkage piece includes the second linkage segment and from the second section of buckling of second linkage segment slant, first linkage segment with first folder connection, the second linkage segment with the second folder is connected, be formed with on first section of buckling and the second section of buckling that corresponds and be used for the slant installation the installation plane of connecting the copper bar, every connection copper bar is unanimous for the inclination and the angle of coaxial cable rather than first end electrical connection.
Further, the cross-connection box further comprises a first insulating plate, the first clamping piece comprises a first clamping part and a first mounting part, the first clamping part is used for clamping the coaxial cable outer core conductor, the first mounting part is in threaded connection with the first connecting piece, the first clamping part and the first connecting piece are fixed with the first insulating plate, and the three first mounting parts and the first insulating plate are provided with corresponding first mounting bolt holes and first direction limiting holes, so that the first connecting piece is ensured to be correct in inclination direction; the cross-connection box further comprises a second insulating plate, the second clamping piece comprises a second clamping part and a second mounting part, the second clamping part is used for clamping the coaxial cable inner core conductor, the second mounting part is in threaded connection with the second connecting piece, the second clamping part and the second connecting piece are fixed with the second insulating plate, and the three second mounting parts and the second insulating plate are provided with corresponding second mounting bolt holes and second direction limiting holes, so that the inclination direction of the second connecting piece is ensured to be correct;
further, the first clamping part comprises a first left clamping part and a first right clamping part which are symmetrically arranged, the first mounting part comprises a first left mounting part and a first right mounting part which are symmetrically arranged, the first left clamping part and the first left mounting part are formed into a whole, the first right clamping part and the first right mounting part are formed into a whole, and a first mounting bolt hole and a first direction limiting hole are respectively arranged on the first left mounting part and the first right mounting part; the second clamping part comprises a second left clamping part and a second right clamping part which are symmetrically arranged, the second mounting part comprises a second left mounting part and a second right mounting part which are symmetrically arranged, the second left clamping part and the second left mounting part are formed into a whole, the second right clamping part and the second right mounting part are formed into a whole, and a second mounting bolt hole and a second direction limiting hole are respectively formed in the second left mounting part and the second right mounting part.
Further, the three first connection terminals and the three second connection terminals are identical, and are installed in a positive-negative mode.
Further, the installation plane of each connection copper bar is parallel to the plane where two coaxial cables electrically connected with two ends of the connection copper bar are located.
Further, the ends of the three coaxial cables are all grounded after passing through the sheath protector.
In another aspect of the present application, there is further provided a cross interconnection system, including at least one cross interconnection unit, where the cross interconnection unit includes three cables, each cable is equally divided into three sections, each cable is connected between every two adjacent sections of cables by an insulating joint, two sections of cable metal sheaths at each insulating joint are connected to a cross interconnection box by coaxial cables for transposition connection, each cross interconnection unit includes two cross interconnection boxes, further, two cross interconnection boxes are the cross interconnection boxes described above, and three coaxial cables of each cross interconnection box are inserted into the cross interconnection boxes in a positive sequence or a reverse sequence for installation.
After the technical scheme is adopted, compared with the prior art, the application has the following beneficial effects: the cross interconnection box of the application ensures the formation of a correct and complete cross interconnection system by arranging the connecting piece with a special structure and the ingenious connection mode of the coaxial cable and the protective layer, thereby avoiding possible wiring errors caused by factors such as design, construction and the like.
Drawings
FIG. 1 is a schematic diagram of a cross-connect unit;
FIG. 2 is a schematic diagram of a first cross-connect interconnect scheme;
FIG. 3 is a schematic diagram of a second cross-connect interconnect scheme;
FIG. 4 is a schematic diagram of a first wiring scheme within a prior art cross-header;
FIG. 5 is a schematic diagram of a second wiring scheme within a prior art cross-header;
FIG. 6 is a schematic view of the overall structure of the cross-header at a first view angle;
FIG. 7 is a schematic view of the overall structure of the cross-header at a second view angle;
fig. 8 is a schematic structural view of a first insulating plate;
FIG. 9 is a schematic view of the cross-connect box with the box removed;
FIG. 10 is a bottom view of FIG. 9;
fig. 11 is a schematic structural view of a coaxial cable;
fig. 12 is a schematic structural view of the first connection terminal;
FIG. 13 is a schematic view of a first connector;
fig. 14 is a schematic structural view of the second connection terminal;
FIG. 15 is a schematic view of a second connector;
fig. 16 is a schematic diagram of the internal wiring of both crossover boxes in a crossover interconnect unit in positive sequence.
Wherein,,
the first connecting terminal 1, the first clamping member 11, the first clamping portion 111, the first left clamping portion 1111, the first right clamping portion 1112, the first mounting portion 112, the first left mounting portion 1121, the first right mounting portion 1122, the first mounting bolt hole 1123, the first direction limiting hole 1124, the first connecting member 12, the first connecting section 121, the first cambered surface 1211, the first bending section 122;
the second connecting terminal 2, the second clamping piece 21, the second clamping part 211, the second left clamping part 2111, the second right clamping part 2112, the second mounting part 212, the second left mounting part 2121, the second right mounting part 2122, the second mounting bolt hole 2123, the second direction limiting hole 2124, the second connecting piece 22, the second connecting section 221, the second arc surface 2211 and the second bending section 222;
a coaxial cable 3, an outer core conductor 31, an inner core conductor 32;
connecting copper bars 4;
a case 5, a first insulating plate 51, a second insulating plate 52, an L-shaped plate 53;
a sheath protector 6;
and a ground line 7.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.
The cross interconnection system comprises a plurality of cross interconnection units, and fig. 1 shows a schematic structural diagram of one cross interconnection unit, wherein A, B, C three-phase cables are all provided with three cable sections with equal length, every two adjacent sections of cables in each phase of cables are connected through insulating joints, two sections of cable metal protective layers at each insulating joint are all connected to the cross interconnection boxes through coaxial cables for transposition connection, and each cross interconnection unit comprises two cross interconnection boxes and two direct grounding boxes at the head end and the tail end of each cable line.
Each cross interconnection unit has two wiring principles, and it is assumed that three equally divided sections of the a-phase cable are respectively an A1 section, an A2 section and an A3 section, three equally divided sections of the B-phase cable are respectively a B1 section, a B2 section and a B3 section, and three equally divided sections of the C-phase cable are respectively a C1 section, a C2 section and a C3 section. Fig. 2 shows a first wiring principle: A1-B2-C3, B1-C2-A3, C1-A2-B3, the common wiring error conditions are: A1-B2-A3, B1-C2-B3, C1-A2-C3. Fig. 3 shows a second wiring principle: A1-C2-B3, B1-A2-C3, C1-B2-A3, the common wiring error conditions are: A1-C2-A3, B1-A2-B3, C1-B2-C3. The complete and effective cross interconnection unit can be realized by correctly completing the wiring according to the wiring principle of fig. 2 or fig. 3, but if a certain part of the cross interconnection unit is misplaced, an effective cross interconnection unit cannot be formed, so that the induced voltage on the cable sheath is not increased and reduced, and the safe operation of the cable line is affected.
Since there are two possibilities for each cross-header wiring scheme, the structure of the left-falling stroke and the structure of the right-falling stroke are shown in fig. 4 and fig. 5, respectively. In the actual wiring process, a complete cross interconnection unit needs to consider the wiring mode inside the two cross interconnection boxes and the insertion sequence of each coaxial cable on the two cross interconnection boxes at the same time, so that the installation is very complex, and meanwhile, due to reasons such as the picture recognition capability or the serious degree of workers, the field situation and the like, the situation of wrong connection still exists.
The application mainly aims to design a cross interconnection box for preventing misconnection of a cross interconnection system, and a complete and correct cross interconnection unit can be formed by inserting coaxial cables at two groups of cable joints into the two cross interconnection boxes respectively in positive sequence or in reverse sequence through a cross interconnection wiring mode with a special structure, so that the technical problems that the wiring modes in the two cross interconnection boxes in the cross interconnection system of a high-voltage cable circuit in the prior art are not matched, a complete cross interconnection unit cannot be formed, and time and labor are wasted during checking and electrical test are solved.
As shown in fig. 6 to 11, the present embodiment provides a cross-connecting box comprising three first connection terminals 1 and three second connection terminals 2, wherein the three first connection terminals 1 are respectively used for electrically connecting with the outer core conductors 31 of the three coaxial cables 3, and the three second connection terminals 2 are respectively used for electrically connecting with the inner core conductors 32 of the three coaxial cables 3. Further, the first connection terminals 1 are also connected with the second connection terminals 2 in a sequentially transposed and electrically connected manner by connecting the copper bars 4 in an oblique manner in a clockwise direction, and a mounting plane is formed on the first connection terminals 1 and the second connection terminals 2 which are electrically connected with the two ends of each connection copper bar 4.
In this embodiment, the three first connection terminals 1 are arranged in a regular triangle, the three second connection terminals 2 are also arranged in a regular triangle, the plane formed by the three first connection terminals 1 is perpendicular to the insertion direction of the coaxial cable 3, and the plane formed by the three second connection terminals 2 is also perpendicular to the insertion direction of the coaxial cable 3, so that the distances between the head and the tail of the transposition connection of two adjacent coaxial cables 3 are equal, the three connection copper bars 4 can adopt identical length dimensions, the connection routes of the connection copper bars 4 are not mutually interfered, and the shapes, the dimensions and the like of the three connection copper bars 4 are identical, so that the connection copper bars 4 are unified in form, the manufacturing cost is reduced, and the large-batch manufacturing is facilitated. In addition, in the prior art of fig. 4 and 5, since the mounting planes of the bridges are coplanar, there is a possibility of mounting errors, and in this embodiment, three first connection terminals 1 and three second connection terminals 2 are arranged in a regular triangle, so that the mounting planes of the connection copper bars 4 are not coplanar, and the connection copper bars 4 can only be mounted according to a specific position and direction, without errors.
Further, as shown in fig. 12 to 15, each first connection terminal 1 in the present embodiment includes a first clip member 11 and a first connection member 12 electrically connected to each other, each second connection terminal 2 includes a second clip member 21 and a second connection member 22 electrically connected to each other, the first clip member 11 is used for connecting an outer core conductor 31 of the coaxial cable 3, the second clip member 21 is used for connecting an inner core conductor 32 of the coaxial cable 3, the first connection member 12 is used for electrically connecting the corresponding second connection member 22 obliquely in a clockwise direction through the connection copper bar 4, and a mounting plane for obliquely mounting the connection copper bar 4 is formed on the first connection member 12 and the corresponding electrically connected second connection member 22.
Specifically, the first connecting member 12 includes a first connecting section 121 and a first bending section 122 bent obliquely from the first connecting section 121, the second connecting member 22 includes a second connecting section 221 and a second bending section 222 bent obliquely from the second connecting section 221, wherein the first connecting section 121 is connected with the first clamping member 11, the second connecting section 221 is connected with the second clamping member 21, the first bending section 122 faces the corresponding second bending section 222, the second bending section 222 faces the corresponding first bending section 122, the first bending section 122 and the corresponding second bending section 222 are formed with mounting planes for mounting the connection copper bars 4 in a clockwise oblique direction, and the inclination direction and the angle of each connection copper bar 4 relative to the coaxial cable 3 electrically connected with the first end thereof are consistent.
Specifically, the cross-connect box of the present embodiment further includes a box body 5, in which a first insulating plate 51 and a second insulating plate 52 are mounted through a plurality of L-shaped plates 53, and an accommodating space between the first insulating plate 51 and the second insulating plate 52 to mount the above-described first connection terminal 1, second connection terminal 2, and connection copper bar 4 is formed. Further, the first clamping member 11 includes a first clamping portion 111 and a first mounting portion 112, the first clamping portion 111 is used for clamping the outer core conductor 31 of the coaxial cable 3 in cooperation with a bolt, the first mounting portion 112 is in screwed connection with the first connecting member 12, and is fixed on the insulating plate through the bolt respectively, so that the first clamping portion 111 and the first connecting member 12 are fixed and electrically connected, the first mounting portion 112 can fix the first clamping portion 111 and the first connecting member 12 with the first insulating plate 51, and corresponding first mounting bolt holes 1123 and first direction limiting holes 1124 are formed in the three first mounting portions 112 and the first insulating plate 51, so that the inclination direction of the first connecting member 12 is ensured to be correct. In this embodiment, the first insulating plate 51 and the first mounting portion 112 are provided with specific first direction limiting holes 1124 (at least two) to mount the first connecting member 12, so that the first connecting member 12 is located at a specific mounting position, and the first bending section 122 on the first connecting member 12 is oriented clockwise, so that the correct wiring can be ensured.
Correspondingly, the second clamping member 21 includes a second clamping portion 211 and a second mounting portion 212, the second clamping portion 211 is used for clamping the inner core conductor 32 of the coaxial cable 3 with a bolt, the second mounting portion 212 is screwed with the second connecting member 22, so that the second clamping portion 211 and the second connecting member 22 are fixed and electrically connected, the second mounting portion 212 can fix the second clamping portion 211 and the second connecting member 22 with the second insulating plate 52, and corresponding second mounting bolt holes 2123 and second direction limiting holes 2124 are formed in the three second mounting portions 212 and the second insulating plate 52, so as to ensure that the second connecting member 22 is inclined correctly.
Preferably, in this embodiment, the first clamping portion 111 includes a first left clamping portion 1111 and a first right clamping portion 1112 that are symmetrically disposed, the first mounting portion 112 includes a first left mounting portion 1121 and a first right mounting portion 1122 that are symmetrically disposed, the first left clamping portion 1111 and the first left mounting portion 1121 are formed as a single body, the first right clamping portion 1112 and the first right mounting portion 1122 are formed as a single body, and a first mounting bolt hole 1123 and a first direction limiting hole 1124 are respectively provided on the first left mounting portion 1121 and the first right mounting portion 1122. Further, the first left clamping portion 1111 and the first right clamping portion 1112 are arc-shaped, and the first connecting section 121 of the first connecting member 12 is provided with a first arc surface 1211 which is matched with the outer wall of the arc-shaped first right clamping portion 1112. When the number of the first direction limiting holes 1124 is only one, the combination of the first cambered surface 1211 and the first right clamping portion 1112 can also ensure that the mounting direction is correct and unique.
Correspondingly, the second clamping portion 211 includes a second left clamping portion 2111 and a second right clamping portion 2112 that are symmetrically disposed, the second mounting portion 212 includes a second left mounting portion 2121 and a second right mounting portion 2122 that are symmetrically disposed, the second left clamping portion 2111 and the second left mounting portion 2121 are formed as a unit, the second right clamping portion 2112 and the second right mounting portion 2122 are formed as a unit, and a second mounting bolt hole 2123 and a second direction limiting hole 2124 are respectively provided on the second left mounting portion 2121 and the second right mounting portion 2122. Further, the second left clamping portion 2111 and the second right clamping portion 2112 are arc-shaped, and the second connection section 221 of the second connecting member 22 is provided with a second arc surface 2211 matched with the outer wall of the arc-shaped second right clamping portion 2112.
Preferably, three first connection terminals 1 and three second connection terminals 2 are all identical, and the types of spare parts are further reduced when the first connection terminals are installed in a positive-negative manner. Like this, first connecting terminal 1 and second connecting terminal 2 of this embodiment are the same completely, and three connection copper bars 4 are the same completely, so make the kind of spare and accessory parts very few, the form is unanimous, and the new acquaintance of being convenient for all can both install fast, change, inspect, simultaneously also be favorable to large-scale batch production, can be general when the spare and accessory parts are changed in all cross-connection boxes simultaneously.
As shown in fig. 10, in this embodiment, the installation plane of each connection copper bar 4 is parallel to the planes of two coaxial cables 3 electrically connected to two ends of the connection copper bar 4, and each connection copper bar 4 is correspondingly installed on the periphery of three coaxial cables 3, so that the installation is more convenient, and the overall modeling is more concise and attractive.
Further, in this embodiment, the above-described cross-connect boxes are used for both cross-connect boxes in one cross-connect unit, and three coaxial cables of each cross-connect box are inserted into the cross-connect boxes in a positive (or reverse) order for installation.
In the prior art, the coaxial cable must be installed corresponding to the connection mode in the cross-connection box, so as to conform to the two connection principles shown in fig. 2 or fig. 3, and the coaxial cable is relatively complex and has high error rate. In the present embodiment, the wiring manner in each cross-connection box is fixed and unique, so that the correct installation of the three-phase coaxial cable is ensured and simplified.
Specifically, when the coaxial cables are inserted into the cross-connection box for connection, the two groups of coaxial cables only need to be inserted into the three wire inlet holes at the bottom of the cross-connection box for wire connection in se:Sub>A positive sequence or in se:Sub>A reverse sequence at the same time, namely, the two groups of coaxial cables are sequentially inserted in any one of the positive sequences (A-B-C or B-C-A or C-A-B) or in any one of the reverse sequences (C-B-A or B-A-C or A-C-B).
Taking the clockwise connection mode in the two cross-connection boxes as an example for explanation, as shown in fig. 16, it is assumed that three first connection terminals in the first cross-connection box are respectively X1, Y1 and Z1, and three second connection terminals are respectively X2, Y2 and Z2; the three first connecting terminals in the second cross-connecting box are respectively X3, Y3 and Z3, and the three second connecting terminals are respectively X4, Y4 and Z4. The two cross-connection boxes are in a clockwise mode, namely, the first cross-connection box is in a connection mode of X1-Y2, Y1-Z2 and Z1-X2, and the second cross-connection box is in a connection mode of X3-Y4, Y3-Z4 and Z3-X4, so that three coaxial cables are uniformly regulated to be inserted into the cross-connection boxes to be inserted in a positive sequence. For example, in a clockwise order, i.e., A1-B2, B1-C2, C1-A2 connections, and a second cross-manifold, also in a clockwise order, i.e., A2-B3, B2-C3, C2-A3 connections. A correct, complete cross-connect system can be formed: A1-B2-C3, A2-B3-C1, A3-B1-C2.
Further, as shown in fig. 6-7, the ends of the three coaxial cables 3 in the embodiment are all grounded through the grounding wire 7 after passing through the sheath protector 6, the arrangement of the sheath protector 6 can effectively limit the metal sheath induced voltage and equipment fault overvoltage on the coaxial cables 3, so that the normal operation of the cables is better protected, when the induced voltage generated on the metal sheath of the coaxial cables 3 increases along with the increase of the length of the cables and the current flowing through the wire core, and the lines suffer from short circuit fault or lightning overvoltage, the sheath protector 6 can limit the rise of the surge overvoltage at the two sides of the insulation sections of the metal sheath and the insulation joint, limit the overvoltage, prevent the insulation breakdown of the metal sheath of the coaxial cables 3 and the cable, and ensure the safe and reliable operation of the cable lines.
As can be seen from the above, according to the cross interconnection box for preventing misconnection in the cross interconnection system provided in this embodiment, only two identical cross interconnection boxes are needed, and the inner cores and the outer cores of the three coaxial cables in the two cross interconnection boxes in the same cross interconnection unit are all inserted and connected according to a set sequence (such as a positive sequence or a reverse sequence direction), so that a correct and complete cross interconnection unit can be formed, and the cross interconnection system failure caused by wiring errors is avoided, thereby ensuring safe and stable operation of the cable line. And the structure is simple, the types of spare parts are few, and the novel device is convenient for a new acquaintance to install, replace and check quickly.
The foregoing is only a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art, who is within the scope of the present application, should make equivalent substitutions or modifications according to the technical scheme of the present application and the inventive concept thereof, and should be covered by the scope of the present application.
Claims (8)
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| CN202210494760.7A CN115021172B (en) | 2022-05-07 | 2022-05-07 | Cross interconnection box and cross interconnection system capable of preventing misconnection |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969581A (en) * | 2012-11-30 | 2013-03-13 | 芜湖科伟兆伏电子有限公司 | High-voltage coaxial cable connector and manufacturing method thereof |
| CN202957567U (en) * | 2012-11-23 | 2013-05-29 | 保定鼎阳电力科技发展有限公司 | Anti-electric-shock intersecting interconnecting protection box |
| CN103427390A (en) * | 2013-08-24 | 2013-12-04 | 广州友智电气技术有限公司 | Intelligent intersected interconnection box device |
| CN104062502A (en) * | 2014-06-20 | 2014-09-24 | 国家电网公司 | Phase examination method of high-voltage cable intersecting interconnection system |
| CN204012536U (en) * | 2014-07-21 | 2014-12-10 | 国家电网公司 | The cross interconnected case of cable of a kind of convenient operation and trystate phase transformation |
| CN207559486U (en) * | 2017-11-09 | 2018-06-29 | 国网江苏省电力公司南京供电公司 | A kind of changeable connecting box of high-pressure coaxial cable docking |
| CN108365593A (en) * | 2018-04-24 | 2018-08-03 | 广东电网有限责任公司 | High tension cable cross-connection system prevents mistake and connects cross-connection case |
| CN108680816A (en) * | 2018-03-28 | 2018-10-19 | 国网天津市电力公司 | A kind of high-tension cable cross connection grounding system electrification checking method |
| CN110401160A (en) * | 2018-04-24 | 2019-11-01 | 广东电网有限责任公司 | A kind of cross interconnected case based on card slot |
| CN112510492A (en) * | 2020-11-30 | 2021-03-16 | 国网北京市电力公司 | Grounding box capable of switching grounding modes of high-voltage cable and electronic device |
| CN214204901U (en) * | 2021-02-04 | 2021-09-14 | 国网安徽省电力有限公司阜阳供电公司 | Novel high tension cable synthesizes grounding box |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6910897B2 (en) * | 2001-01-12 | 2005-06-28 | Litton Systems, Inc. | Interconnection system |
-
2022
- 2022-05-07 CN CN202210494760.7A patent/CN115021172B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202957567U (en) * | 2012-11-23 | 2013-05-29 | 保定鼎阳电力科技发展有限公司 | Anti-electric-shock intersecting interconnecting protection box |
| CN102969581A (en) * | 2012-11-30 | 2013-03-13 | 芜湖科伟兆伏电子有限公司 | High-voltage coaxial cable connector and manufacturing method thereof |
| CN103427390A (en) * | 2013-08-24 | 2013-12-04 | 广州友智电气技术有限公司 | Intelligent intersected interconnection box device |
| CN104062502A (en) * | 2014-06-20 | 2014-09-24 | 国家电网公司 | Phase examination method of high-voltage cable intersecting interconnection system |
| CN204012536U (en) * | 2014-07-21 | 2014-12-10 | 国家电网公司 | The cross interconnected case of cable of a kind of convenient operation and trystate phase transformation |
| CN207559486U (en) * | 2017-11-09 | 2018-06-29 | 国网江苏省电力公司南京供电公司 | A kind of changeable connecting box of high-pressure coaxial cable docking |
| CN108680816A (en) * | 2018-03-28 | 2018-10-19 | 国网天津市电力公司 | A kind of high-tension cable cross connection grounding system electrification checking method |
| CN108365593A (en) * | 2018-04-24 | 2018-08-03 | 广东电网有限责任公司 | High tension cable cross-connection system prevents mistake and connects cross-connection case |
| CN110401160A (en) * | 2018-04-24 | 2019-11-01 | 广东电网有限责任公司 | A kind of cross interconnected case based on card slot |
| CN112510492A (en) * | 2020-11-30 | 2021-03-16 | 国网北京市电力公司 | Grounding box capable of switching grounding modes of high-voltage cable and electronic device |
| CN214204901U (en) * | 2021-02-04 | 2021-09-14 | 国网安徽省电力有限公司阜阳供电公司 | Novel high tension cable synthesizes grounding box |
Non-Patent Citations (1)
| Title |
|---|
| 110kV单芯电缆交叉互联箱接线错误引发事故的原因及解决措施;薛志彬;李辉;高文民;;安装(第08期);第46-47页 * |
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