CN112421323A - Prefabricated connecting cable for power distribution cabinet - Google Patents
Prefabricated connecting cable for power distribution cabinet Download PDFInfo
- Publication number
- CN112421323A CN112421323A CN202011101721.3A CN202011101721A CN112421323A CN 112421323 A CN112421323 A CN 112421323A CN 202011101721 A CN202011101721 A CN 202011101721A CN 112421323 A CN112421323 A CN 112421323A
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- CN
- China
- Prior art keywords
- plug
- copper
- copper piece
- connecting cable
- piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009826 distribution Methods 0.000 title claims abstract description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 87
- 229910052802 copper Inorganic materials 0.000 claims abstract description 61
- 239000010949 copper Substances 0.000 claims abstract description 61
- 238000009413 insulation Methods 0.000 claims description 6
- 229920002943 EPDM rubber Polymers 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
-
- 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
- H01R13/46—Bases; Cases
- H01R13/50—Bases; Cases formed as an integral body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/56—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation one conductor screwing into another
Landscapes
- Cable Accessories (AREA)
Abstract
本发明提供了一种用于配电柜中的预制成型的连接电缆，其大致呈工字型，包括：插头(1)、铜芯(2)、绝缘层(3)、PT插头(4)，所述插头(1)、绝缘层(3)与PT插头(4)一体成型；其中：插头(1)与配电柜的套管相连；PT插头(4)与PT互感器相连；所述铜芯(2)包括设置于插头(1)内部的第一铜件(21)，第一铜件(21)通过螺纹与第二铜件(22)相连接，第二铜件(22)另一端通过螺纹与设置于PT插头(4)内的第三铜件(23)相连接。实施本发明，电缆附件厂可以预制成型各种长度的连接电缆，且安装简单、便捷、故障率低。
The invention provides a prefabricated connection cable used in a power distribution cabinet, which is roughly in the shape of an I-shape, and comprises: a plug (1), a copper core (2), an insulating layer (3), and a PT plug (4) , the plug (1), the insulating layer (3) and the PT plug (4) are integrally formed; wherein: the plug (1) is connected with the bushing of the power distribution cabinet; the PT plug (4) is connected with the PT transformer; the The copper core (2) includes a first copper piece (21) disposed inside the plug (1), the first copper piece (21) is connected with the second copper piece (22) through threads, and the second copper piece (22) is separately One end is connected with the third copper piece (23) arranged in the PT plug (4) through a thread. By implementing the invention, the cable accessory factory can prefabricate connecting cables of various lengths, and the installation is simple and convenient, and the failure rate is low.
Description
Technical Field
The invention relates to a cable accessory in the power industry, in particular to a prefabricated connecting cable for a power distribution cabinet.
Background
Along with the vigorous development of the smart power grid, more and more intelligent monitoring devices are applied to the power distribution cabinet. The intelligent monitoring equipment most all needs the external power supply, therefore the switch board is equipped with the PT cabinet mostly at present stage, is used for high pressure specially to get electricity, vary voltage, supplies power for intelligent monitoring equipment. Under the requirement of switch board intellectuality, miniaturized development, the switch board inner space is by a recompression, especially in the PT cabinet, has high-tension bushing often to PT mutual-inductor's interval too short, is less than the limit installation size of cable head even, leads to unable cable head of using to connect, influences the normal installation use of switch board.
The cable head is molded by a manufacturer, the size of the cable head is fixed, the center distance of a use scene cannot be smaller than the stripping and cutting size of the cable head, and otherwise, the cable head cannot be installed. Therefore, for the application scene with short center distance, the action of the cable head is very similar.
Disclosure of Invention
The invention aims to solve the technical problem of providing a prefabricated connecting cable for a power distribution cabinet, which can be suitable for application scenes with short center distance and is simple and convenient to install.
In order to solve the above technical problem, an aspect of the present invention provides a connection cable for a power distribution cabinet, which is substantially i-shaped, and includes: the plug, the insulating layer and the PT plug are integrally formed; wherein:
the plug is connected with a 630A or 1250A sleeve of the power distribution cabinet;
the PT plug is connected with the PT mutual inductor;
the copper core set up in inside plug, insulating layer and PT plug, it includes: the first copper piece is arranged inside the plug, the first copper piece is connected with the second copper piece through threads, and the other end of the second copper piece is connected with the third copper piece arranged in the PT plug through threads.
Preferably, one end of the first copper piece is an arc surface, and a circular through hole is formed in the center of the first copper piece and is used for being matched with a sleeve in a power distribution cabinet; the other end of the first copper piece is a conical closing-in, and an internal thread is arranged in the center of the first copper piece;
the second copper piece is a cylindrical copper rod, external threads are arranged at two ends of the second copper piece, the middle part of the second copper piece is a smooth cylinder, and the external threads at one end of the second copper piece are matched with the internal threads of the first copper piece;
one end of the third copper piece is a plane, and the center of the third copper piece is provided with an internal thread which is used for being matched with the size of a fuse cylinder of the PT transformer belt; the other end of the third copper piece is a cylindrical surface, an internal thread is arranged in the center of the third copper piece, and the third copper piece is matched with the external thread at the other end of the second copper piece through the internal thread on the cylindrical surface of the third copper piece.
Preferably, the plug, the insulating layer and the PT plug are made of silicon rubber or ethylene propylene diene monomer rubber, the hardness of the plug is HA 35-HA 60, and the insulating strength is not lower than 25 kV/mm.
Preferably, the copper core is made of T2 copper, and all edges are processed by fillets; the insulation thickness of the plug, the insulation layer and the PT plug is not less than 8 mm.
Preferably, the outer surface of the connecting cable is sprayed with conductive ink and subjected to grounding treatment, wherein the shielding resistance of the conductive ink is less than 5000 Ω -cm.
The embodiment of the invention has the following beneficial effects:
the invention provides a prefabricated connecting cable for a power distribution cabinet, which can be directly prefabricated into an integral connecting cable in a mould according to the actual length by a cable accessory factory, the length can be freely adjusted, the limitation of the overall dimension of a cable head is avoided, and the integral connecting cable is only required to be locked by a locking screw when used on site, so that the installation is simple and convenient, the prefabricated connecting cable is suitable for use occasions with short and extremely short center distances, and the installation efficiency is high and the failure rate is low compared with the traditional connecting cable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
Fig. 1 is a schematic longitudinal sectional view of an embodiment of a prefabricated connecting cable for a power distribution cabinet according to the present invention;
fig. 2 is a schematic structural view of a disassembled part of the copper core in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
For those skilled in the art to more clearly understand the objects, technical solutions and advantages of the present invention, the following description will be further provided in conjunction with the accompanying drawings and examples.
As shown in fig. 1, a schematic longitudinal section structure of an embodiment of the prefabricated connecting cable for power distribution cabinets provided by the invention is shown; referring to fig. 2 together, in this embodiment, the preformed connection cable, which is substantially i-shaped, includes: the plug comprises a plug 1, a copper core 2, an insulating layer 3 and a PT plug 4, wherein the plug 1, the insulating layer 3 and the PT plug 4 are integrally formed; wherein:
the plug 1 is connected with a 630A or 1250A sleeve of a power distribution cabinet; in a specific application scenario, the shape of the plug 1 can be designed according to a matched sleeve, and on the premise of ensuring the size matching with the matching surface of the sleeve, the sizes of other positions can be adjusted according to the size of accessories, such as length shortening, outer diameter reduction, grounding position change, post-plugging size adjustment and the like;
the PT plug 4 is connected with a PT mutual inductor; in a specific application scenario, the shape of the PT plug 4 can be designed according to the PT transformer, and the sizes of other positions can be adjusted on the premise of ensuring the matching with the conical surface fit size of the PT transformer, such as changing the length and the diameter.
It will be appreciated that in practice, the length of the pre-formed connecting cable can be adjusted to suit the application by adjusting the length of the second copper member 22 according to the length of the scene in which it is actually used.
In a specific embodiment, wherein:
one end of the first copper piece 21 is an arc surface, a circular through hole is formed in the center of the first copper piece and used for being matched with a sleeve in a power distribution cabinet, and the size of the circular through hole is preferably phi 14-phi 17 mm; the other end of the first copper piece 21 is a conical closing-in, the center of the first copper piece is provided with an internal thread, and the size of the internal thread is preferably M6;
the second copper part 22 is a cylindrical copper rod, external threads are arranged at two ends of the second copper part, the middle part of the second copper part is a smooth cylinder, and the external threads at one end of the second copper part are matched with the internal threads of the first copper part; since the PT mutual inductor mainly supplies power to the intelligent equipment, the maximum using power of the PT mutual inductor is limited, the size of the external thread is preferably M6 through calculation of the maximum using power and a safety margin, and the size of the cylindrical part is preferably phi 6 mm.
One end of the third copper piece 23 is a plane, and the center of the third copper piece is provided with an internal thread which is matched with the size of a fuse cylinder of the PT transformer belt; the other end of the third copper part 23 is a cylindrical surface, an internal thread is arranged in the center of the cylindrical surface, and the size of the internal thread in the center of the cylindrical surface is preferably M6; the third copper part 23 is matched with the external thread at the other end of the third copper part 22 through the internal thread of the cylindrical surface of the third copper part.
In a specific embodiment, the plug 1, the insulating layer 3 and the PT plug 4 are made of silicon rubber or ethylene propylene diene monomer rubber, the hardness of the silicon rubber or the ethylene propylene diene monomer rubber is HA 35-HA 60, and the insulating strength is not lower than 25 kV/mm.
In a specific embodiment, the copper core 2 is made of T2 copper, and all edges are rounded, for example, in some cases, the rounded size is r0.5mm to R3 mm; the insulation thickness of the plug 1, the insulation layer 3 and the PT plug 4 is not less than 8mm, and specifically, can be selected according to the system voltage applied to the product.
In a specific embodiment, the connection cable may be a shielded connection cable, and the outer surface of the connection cable is sprayed with conductive ink and subjected to grounding treatment, wherein the shielding resistance of the conductive ink is less than 5000 Ω · cm.
In another embodiment, the connection cable may be a non-shielded connection cable, and the surface of the connection cable is not sprayed with conductive ink and is not grounded.
The embodiment of the invention has the following beneficial effects:
the invention provides a prefabricated connecting cable for a power distribution cabinet, which can be directly prefabricated into an integral connecting cable in a mould according to the actual length by a cable accessory factory, the length can be freely adjusted, the limitation of the overall dimension of a cable head is avoided, and the integral connecting cable is only required to be locked by a locking screw when used on site, so that the installation is simple and convenient, the prefabricated connecting cable is suitable for use occasions with short and extremely short center distances, and the installation efficiency is high and the failure rate is low compared with the traditional connecting cable.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (5)
1. A preformed connecting cable for use in a power distribution cabinet, characterized in that it is substantially I-shaped, comprising: the plug comprises a plug (1), a copper core (2), an insulating layer (3) and a PT plug (4), wherein the plug (1), the insulating layer (3) and the PT plug (4) are integrally formed; wherein:
the plug (1) is connected with a 630A or 1250A sleeve of a power distribution cabinet;
the PT plug (4) is connected with a PT mutual inductor;
copper core (2) set up in inside plug (1), insulating layer (3) and PT plug (4), it includes: the PT plug comprises a first copper piece (21) arranged inside the plug (1), wherein the first copper piece (21) is connected with a second copper piece (22) through threads, and the other end of the second copper piece (22) is connected with a third copper piece (23) arranged in the PT plug (4) through threads.
2. The connecting cable of claim 1, wherein:
one end of the first copper piece (21) is an arc surface, and a circular through hole is formed in the center of the first copper piece and is used for being matched with a sleeve in the power distribution cabinet; the other end of the first copper piece (21) is a conical closing-in, and the center of the first copper piece is provided with an internal thread;
the second copper piece (22) is a cylindrical copper rod, external threads are arranged at two ends of the second copper piece, the middle part of the second copper piece is a smooth cylinder, and the external threads at one end of the second copper piece are matched with the internal threads of the first copper piece;
one end of the third copper piece (23) is a plane, and the center of the third copper piece is provided with an internal thread which is used for being matched with the size of a fuse cylinder of the PT transformer belt; the other end of the third copper part (23) is a cylindrical surface, an internal thread is arranged in the center of the third copper part, and the third copper part (23) is matched with the external thread at the other end of the second copper part (22) through the internal thread on the cylindrical surface of the third copper part.
3. The connecting cable according to claim 2, wherein the plug (1), the insulating layer (3) and the PT plug (4) are made of silicon rubber or ethylene propylene diene monomer rubber, the hardness of the connecting cable is HA 35-HA 60, and the insulating strength of the connecting cable is not lower than 25 kV/mm.
4. A connecting cable according to claim 3, characterized in that the copper core (2) is made of T2 copper, and all edges are rounded; the insulation thicknesses of the plug (1), the insulation layer (3) and the PT plug (4) are not less than 8 mm.
5. The connecting cable of claim 4 wherein the outer surface of the connecting cable is coated with a conductive ink and treated to ground, wherein the conductive ink has a shielding resistance of less than 5000 Ω -cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011101721.3A CN112421323A (en) | 2020-10-15 | 2020-10-15 | Prefabricated connecting cable for power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011101721.3A CN112421323A (en) | 2020-10-15 | 2020-10-15 | Prefabricated connecting cable for power distribution cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112421323A true CN112421323A (en) | 2021-02-26 |
Family
ID=74855274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011101721.3A Pending CN112421323A (en) | 2020-10-15 | 2020-10-15 | Prefabricated connecting cable for power distribution cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112421323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113936842A (en) * | 2021-10-15 | 2022-01-14 | 天大铜业(天长)有限公司 | A kind of high-quality low-oxygen copper rod and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2710341A1 (en) * | 1977-03-10 | 1978-09-14 | Reinhard Treudler | Board for plugged integrated circuit for teaching purposes - has socket for integrated circuit at one end connected to single connection sockets along edges and carries foil with circuit diagram |
| CN1311549A (en) * | 2000-03-02 | 2001-09-05 | 富士康(昆山)电脑接插件有限公司 | Line cable connector and its making method |
| US6758578B1 (en) * | 2003-06-11 | 2004-07-06 | Tsung-Yuan Chou | T type quick-lock lampholder |
| CN104868395A (en) * | 2015-05-19 | 2015-08-26 | 中黔电气集团股份有限公司 | Full-insulation PT handcart |
| CN205609777U (en) * | 2016-01-25 | 2016-09-28 | 乐清市君浩电气科技有限公司 | Locking joint |
| CN205693106U (en) * | 2016-05-10 | 2016-11-16 | 国网新疆电力公司昌吉供电公司 | Line feed terminals attachment structure |
| CN207884035U (en) * | 2018-02-09 | 2018-09-18 | 西安福润德电子科技有限公司 | A kind of high-tension cable connect-disconnect plug is without partial discharge adapter |
| CN110895988A (en) * | 2019-12-05 | 2020-03-20 | 廊坊芳远新合电气有限公司 | Special voltage transformer of portable connects |
| CN210272951U (en) * | 2019-08-23 | 2020-04-07 | 上海成丰线缆有限公司 | A prefabricated cable subassembly for sound console is connected to cell-phone |
-
2020
- 2020-10-15 CN CN202011101721.3A patent/CN112421323A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2710341A1 (en) * | 1977-03-10 | 1978-09-14 | Reinhard Treudler | Board for plugged integrated circuit for teaching purposes - has socket for integrated circuit at one end connected to single connection sockets along edges and carries foil with circuit diagram |
| CN1311549A (en) * | 2000-03-02 | 2001-09-05 | 富士康(昆山)电脑接插件有限公司 | Line cable connector and its making method |
| US6758578B1 (en) * | 2003-06-11 | 2004-07-06 | Tsung-Yuan Chou | T type quick-lock lampholder |
| CN104868395A (en) * | 2015-05-19 | 2015-08-26 | 中黔电气集团股份有限公司 | Full-insulation PT handcart |
| CN205609777U (en) * | 2016-01-25 | 2016-09-28 | 乐清市君浩电气科技有限公司 | Locking joint |
| CN205693106U (en) * | 2016-05-10 | 2016-11-16 | 国网新疆电力公司昌吉供电公司 | Line feed terminals attachment structure |
| CN207884035U (en) * | 2018-02-09 | 2018-09-18 | 西安福润德电子科技有限公司 | A kind of high-tension cable connect-disconnect plug is without partial discharge adapter |
| CN210272951U (en) * | 2019-08-23 | 2020-04-07 | 上海成丰线缆有限公司 | A prefabricated cable subassembly for sound console is connected to cell-phone |
| CN110895988A (en) * | 2019-12-05 | 2020-03-20 | 廊坊芳远新合电气有限公司 | Special voltage transformer of portable connects |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113936842A (en) * | 2021-10-15 | 2022-01-14 | 天大铜业(天长)有限公司 | A kind of high-quality low-oxygen copper rod and preparation method thereof |
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Application publication date: 20210226 |
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| RJ01 | Rejection of invention patent application after publication |