CN107831338B - Cable joint assembly with double shielding function - Google Patents
Cable joint assembly with double shielding function Download PDFInfo
- Publication number
- CN107831338B CN107831338B CN201710881898.1A CN201710881898A CN107831338B CN 107831338 B CN107831338 B CN 107831338B CN 201710881898 A CN201710881898 A CN 201710881898A CN 107831338 B CN107831338 B CN 107831338B
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- cylinder
- core wire
- insulating
- shielding
- insulating sleeve
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/18—Screening arrangements against electric or magnetic fields, e.g. against earth's field
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The invention relates to a cable connector assembly with double shielding functions. The existing product cannot realize the double shielding function. The invention comprises an outer shielding cylinder, an insulating cylinder, an inner shielding cylinder and a core wire cylinder, wherein the outer shielding cylinder and the inner shielding cylinder are respectively arranged at two ends of the insulating cylinder, and the core wire cylinder is arranged in the inner shielding cylinder. The outer shielding cylinder, the inner shielding cylinder and the core wire cylinder are made of metal materials, the outer shielding cylinder is used for being connected with an outer shielding layer of the access lead, the inner shielding cylinder is used for being connected with an inner shielding layer of the access lead, and the core wire cylinder is used for being connected with a core wire of the access lead. The grounding cylinder is in insulating connection with the inner shielding cylinder through an insulating cylinder, and the inner shielding cylinder is in insulating connection with the core wire cylinder through an insulating sleeve. The two ends of the core wire cylinder are respectively provided with a core wire blind hole for fixing the core wire and a contact pin blind hole for fixing a contact pin of the equipment to be connected from outside to inside. The invention realizes that the core wire, the inner shielding layer and the outer shielding layer of the high-voltage test wire are arranged on the same cable joint, thereby being safer and more reliable and being more convenient and quicker to wire.
Description
Technical Field
The invention belongs to the technical field of power measurement equipment, and particularly relates to a cable joint assembly with a double shielding function.
Background
The high voltage test items such as dielectric loss and insulation resistance of the power transformer are an effective means for judging the insulation state of the power transformer, and are main items for performing tests such as handover and preventive tests on the power transformer. The test requirements of high-voltage detection projects such as dielectric loss, insulation resistance and the like determine that a test loop needs to have a double shielding function. The high-voltage test wire on the market can achieve the double shielding function at present, but the cable connector cannot achieve the double shielding function, only the core wire of the high-voltage test wire and the inner shielding wire can be connected, and the outer shielding wire needs to be grounded by a separate connector.
In the use process of the high-voltage test wire, pressure difference exists among the core wire, the inner shielding layer and the outer shielding layer. When the cable connector without double shielding function is adopted, the outer shielding wires are individually stripped off and grounded, and high voltage is arranged between the outer shielding layer and the inner shielding layer, so that the cable connector without double shielding function is manually held by a person to be plugged into and pulled out of high-voltage equipment to be connected with the cable connector.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides a cable connector component with double shielding functions, which can enable a core wire, an inner shielding layer and an outer shielding layer of a high-voltage test wire to be arranged on the same cable connector.
The invention comprises an outer shielding cylinder, an insulating cylinder, an inner shielding cylinder and a core wire cylinder, wherein the outer shielding cylinder is connected with one end of the insulating cylinder in a matching way, the inner shielding cylinder is connected with the other end of the insulating cylinder in a matching way, and the core wire cylinder is arranged in the inner shielding cylinder.
The outer shielding cylinder comprises a grounding outer cylinder and a grounding inner cylinder which are made of metal materials, the grounding inner cylinder is coaxially arranged at the rear part in the grounding outer cylinder, one end of the grounding inner cylinder is fixedly connected with the grounding outer cylinder through an edge protrusion and is communicated with the grounding outer cylinder, and the other end of the grounding inner cylinder is suspended in the air.
The insulating cylinder is a cylinder made of insulating cylinder materials, and the inner wall of the insulating cylinder is in a stepped cylindrical shape to form a positioning step.
The inner shielding cylinder is a metal cylinder with two open ends, and a positioning ring is arranged on the inner wall of the front part of the inner shielding cylinder.
The core wire barrel is a cylinder made of metal material and provided with a three-section step structure, and sequentially comprises an outer plug connector section, an insulating sleeve seat section and a core wire connector section, wherein the outer diameter of the insulating sleeve seat section is larger than that of the outer plug connector section and the core wire connector section and smaller than that of the inner shielding barrel; the end face of the outer plug connector section is inwards provided with a pin blind hole for fixing a pin of the equipment to be plugged, and the end face of the core wire connector section is inwards provided with a core wire blind hole.
The axial sections of the front insulating sleeve and the rear insulating sleeve are T-shaped, the inner diameter of the front insulating sleeve is matched with the outer diameter of the outer plug section, the inner diameter of the rear insulating sleeve is matched with the outer diameter of the core wire joint section, and the maximum outer diameters of the front insulating sleeve and the rear insulating sleeve are matched with the inner diameter of the inner shielding barrel.
The front insulating sleeve is sleeved outside the outer plug section, and the big end faces the insulating sleeve seat section; the rear insulating sleeve is sleeved outside the core wire joint section, and the big end faces the insulating sleeve seat section; the core wire barrel, the front insulating sleeve and the rear insulating sleeve are combined and then arranged in the inner shielding barrel and are limited by the positioning ring; an annular space is arranged between the insulating sleeve seat section of the combined core wire barrel and the inner wall of the inner shielding barrel.
The rear part of the inner shielding cylinder is inserted into the front part of the insulating cylinder and is positioned by a positioning step.
According to the invention, the outer shielding cylinder is in insulating connection with the inner shielding cylinder through the insulating cylinder, and the inner shielding cylinder is in insulating connection with the core wire cylinder through the insulating sleeve, so that a stable step-shaped connection relationship is formed. In the wiring, the outer shielding layer of the high-voltage test wire is connected with the grounding inner cylinder in a conducting way, the inner shielding layer is connected with the inner shielding cylinder in a conducting way, and the core wire is connected with the core wire cylinder in a conducting way. Thus, the core wire, the inner shielding layer and the outer shielding layer of the high-voltage test wire are arranged on the same cable connector. According to the invention, in high-voltage test projects such as dielectric loss and insulation resistance of the power transformer, people can contact the connector in the plugging and using processes, so that the power transformer is safer and more reliable, and wiring is more convenient and faster.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the outer shield of FIG. 1;
FIG. 3 is a schematic view of the insulating cylinder of FIG. 1;
fig. 4 is a schematic view of the structure of the inner shield and core barrel of fig. 1.
Detailed Description
As shown in fig. 1, a cable joint assembly with double shielding function comprises an outer shielding cylinder 1, an insulating cylinder 2, an inner shielding cylinder 3 and a core wire cylinder 4, wherein one end of the outer shielding cylinder 1 is in threaded connection with one end of the insulating cylinder 2, the inner shielding cylinder 3 is in matched connection with the insulating cylinder 2, and the core wire cylinder 4 is arranged in the inner shielding cylinder 3.
As shown in fig. 2, the outer shielding cylinder 1 comprises a grounding outer cylinder 1-1 and a grounding inner cylinder 1-2 which are made of metal materials, the grounding inner cylinder 1-2 is coaxially arranged at the rear part in the grounding outer cylinder 1-1, one end of the grounding inner cylinder is fixedly connected with the grounding outer cylinder 1-1 through a rim protrusion 1-2-1 and is conducted, and the other end of the grounding inner cylinder is suspended in the air; the inner wall of the grounding outer cylinder 1-1 is tapped with internal threads.
As shown in fig. 3, the insulating cylinder 2 is a cylinder made of insulating cylinder material, the rear part of the outer wall of the insulating cylinder 2 is tapped with external threads, the front part of the inner wall is provided with an annular protrusion 2-1, and the inner wall of the insulating cylinder 2 is in a stepped cylindrical shape to form a positioning step 2-2. The rear part of the insulating cylinder 2 is screwed with the front part of the outer shielding cylinder 1.
As shown in fig. 4, the inner shielding cylinder 3 is a metal cylinder with two open ends, the inner wall of the front part of the inner shielding cylinder is provided with a positioning ring 3-1, and the outer wall of the rear part of the inner shielding cylinder is provided with an annular clamping groove 3-2 matched with the annular protrusion 2-1 for positioning and fixing when the whole assembly is installed. Glue can be placed in the annular clamping groove 3-2 during assembly to increase the firmness of assembly.
The core wire barrel 4 is a cylinder made of metal material and provided with a three-section step structure, and sequentially comprises an outer plug connector section, an insulating sleeve seat section and a core wire connector section, wherein the outer diameter of the insulating sleeve seat section is larger than that of the outer plug connector section and the core wire connector section and smaller than that of the inner shielding barrel 3.
The end face of the outer plug section is inwards provided with a pin blind hole 4-1 for fixing a pin of the equipment to be plugged, and a crown spring 4-2 is arranged in the pin blind hole 4-1; the end face of the core wire joint section is inwards provided with a core wire blind hole 4-3, and the side wall of the core wire blind hole 4-3 is provided with a penetrating core wire welding hole 4-4. The pin blind hole 4-1 and the core wire blind hole 4-3 are both needle-shaped.
The crown spring 4-2 is a thin-walled cylinder made of elastic metal material, the side wall of the crown spring is contracted inwards and is hyperbolic, and a plurality of through grooves are formed in the side wall along the vertical direction, so that the elasticity of the crown spring is improved.
The axial sections of the front insulating sleeve 5-1 and the rear insulating sleeve 5-2 are T-shaped, the inner diameter of the front insulating sleeve 5-1 is matched with the outer diameter of the outer plug section, the inner diameter of the rear insulating sleeve 5-2 is matched with the outer diameter of the core wire joint section, and the maximum outer diameters of the front insulating sleeve 5-1 and the rear insulating sleeve 5-2 are matched with the inner diameter of the inner shielding cylinder 3.
The front insulating sleeve 5-1 is sleeved outside the outer plug section, and the big end faces the insulating sleeve seat section; the rear insulating sleeve 5-2 is sleeved outside the core wire joint section, and the big end faces the insulating sleeve seat section; the core wire barrel 4, the front insulating sleeve 5-1 and the rear insulating sleeve 5-2 are combined and arranged in the inner shielding barrel 3 and are limited by the positioning ring 3-1; an annular space is formed between the insulating sleeve seat section of the combined core wire barrel and the inner wall of the inner shielding barrel, and the core wire barrel and the inner shielding barrel are kept insulated by utilizing the two insulating sleeves.
The rear part of the inner shielding cylinder 3 is inserted into the front part of the insulating cylinder 2, fixedly connected with the annular clamping groove 3-2 through the annular protrusion 2-1 and positioned through the positioning step 2-2.
The high-voltage test wire sequentially comprises an outer insulating layer, a metal net outer shielding layer, a high-temperature resistant insulating layer, a metal net inner shielding layer, a core wire insulating layer and a core wire from outside to inside. The specific wiring process is as follows: after the high-voltage test wire is stripped off the outer insulating layer, the metal mesh outer shielding layer is welded with the grounding inner cylinder 1-2; then the metal mesh inner shielding layer enters an inner shielding cylinder 3 through an insulating cylinder 2, and the high-temperature resistant insulating layer is stripped to connect the metal mesh inner shielding layer with the inner shielding cylinder 3 in a conducting way; the core wire after the core wire insulating layer is stripped is inserted into the core wire blind hole 4-3, and the core wire is fixed in the core wire blind hole 4-3 through the core wire welding hole 4-4.
Claims (3)
1. The cable connector assembly with the double shielding functions comprises an outer shielding cylinder (1), an insulating cylinder (2), an inner shielding cylinder (3) and a core wire cylinder (4), wherein the outer shielding cylinder (1) is connected with one end of the insulating cylinder (2) in a matched manner, the inner shielding cylinder (3) is connected with the other end of the insulating cylinder (2) in a matched manner, and the core wire cylinder (4) is arranged in the inner shielding cylinder 3; the method is characterized in that:
the outer shielding cylinder (1) comprises a grounding outer cylinder (1-1) and a grounding inner cylinder (1-2) which are made of metal materials, the grounding inner cylinder (1-2) is coaxially arranged at the rear part in the grounding outer cylinder (1-1), one end of the grounding inner cylinder is fixedly connected with the grounding outer cylinder (1-1) through an edge protrusion (1-2-1) and is communicated, and the other end of the grounding inner cylinder is suspended in the air;
the insulating cylinder (2) is a cylinder made of insulating cylinder materials, and the inner wall of the insulating cylinder is in a step cylinder shape to form a positioning step (2-2);
the inner shielding cylinder (3) is a metal cylinder with two open ends, and a positioning ring (3-1) is arranged on the inner wall of the front part of the inner shielding cylinder;
the core wire barrel (4) is a cylinder made of metal material and provided with a three-section step structure, and sequentially comprises an outer plug connector section, an insulating sleeve seat section and a core wire connector section, wherein the outer diameter of the insulating sleeve seat section is larger than that of the outer plug connector section and the core wire connector section and smaller than that of the inner shielding barrel (3); the end face of the outer plug connector section is inwards provided with a pin blind hole (4-1) for fixing a pin of the equipment to be plugged, and the end face of the core wire connector section is inwards provided with a core wire blind hole (4-3); the pin blind hole (4-1) and the core wire blind hole (4-3) are both needle-shaped; a crown spring (4-2) is arranged in the pin blind hole (4-1); the crown spring (4-2) is a thin-walled cylinder made of elastic metal material, the side wall of the crown spring is contracted inwards and is hyperbolic, and a plurality of through grooves are formed in the side wall along the vertical direction; the side wall of the core wire blind hole (4-3) is provided with a penetrating core wire welding hole (4-4);
the axial sections of the front insulating sleeve (5-1) and the rear insulating sleeve (5-2) are T-shaped, the inner diameter of the front insulating sleeve (5-1) is matched with the outer diameter of the outer plug section, the inner diameter of the rear insulating sleeve (5-2) is matched with the outer diameter of the core wire joint section, and the maximum outer diameters of the front insulating sleeve (5-1) and the rear insulating sleeve (5-2) are matched with the inner diameter of the inner shielding cylinder (3);
the front insulating sleeve (5-1) is sleeved outside the outer plug section, and the big end faces the insulating sleeve seat section; the rear insulating sleeve (5-2) is sleeved outside the core wire joint section, and the big end faces the insulating sleeve seat section; the core wire barrel (4), the front insulating sleeve (5-1) and the rear insulating sleeve (5-2) are combined and then arranged in the inner shielding barrel (3) and limited by the positioning ring (3-1); an annular space is formed between the insulating sleeve seat section of the combined core wire barrel and the inner wall of the inner shielding barrel;
the rear part of the inner shielding cylinder (3) is inserted into the front part of the insulating cylinder (2) and is positioned by the positioning step (2-2).
2. A cable splice assembly having a double shielding function as defined in claim 1, wherein: the inner wall of the grounding outer cylinder (1-1) is provided with internal threads, the outer wall of the insulating cylinder (2) is provided with external threads, and the rear part of the insulating cylinder (2) is in threaded connection with the front part of the outer shielding cylinder (1).
3. A cable splice assembly having a double shielding function as defined in claim 1, wherein: the front part of the inner wall of the insulating cylinder (2) is provided with an annular protrusion (2-1), the outer wall of the rear part of the inner shielding cylinder (3) is provided with an annular clamping groove (3-2), the annular protrusion (2-1) is matched with the annular clamping groove (3-2), and the inner shielding cylinder (3) and the insulating cylinder (2) are fixedly connected with the annular protrusion (2-1) through the annular clamping groove (3-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710881898.1A CN107831338B (en) | 2017-09-26 | 2017-09-26 | Cable joint assembly with double shielding function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710881898.1A CN107831338B (en) | 2017-09-26 | 2017-09-26 | Cable joint assembly with double shielding function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107831338A CN107831338A (en) | 2018-03-23 |
| CN107831338B true CN107831338B (en) | 2023-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710881898.1A Active CN107831338B (en) | 2017-09-26 | 2017-09-26 | Cable joint assembly with double shielding function |
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| Country | Link |
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| CN (1) | CN107831338B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119789B (en) * | 2018-10-09 | 2024-04-02 | 深圳市沃尔核材股份有限公司 | Quick-plugging power distribution cable connection structure |
| CN113540835B (en) * | 2020-04-16 | 2023-07-04 | 北京机械设备研究所 | Joint of cabin penetrating cable in strong electromagnetic environment and shielding treatment method |
| CN112730910A (en) * | 2020-12-25 | 2021-04-30 | 杭州西湖电子研究所 | Separated time grafting subassembly with double-shielding function |
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| CN107831338A (en) | 2018-03-23 |
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