CN107462820B - A separable connector for smart power grids monitored control system - Google Patents
A separable connector for smart power grids monitored control system Download PDFInfo
- Publication number
- CN107462820B CN107462820B CN201710915982.0A CN201710915982A CN107462820B CN 107462820 B CN107462820 B CN 107462820B CN 201710915982 A CN201710915982 A CN 201710915982A CN 107462820 B CN107462820 B CN 107462820B
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- Prior art keywords
- conductor
- separable connector
- insulating layer
- temperature
- monitoring system
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- 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
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6581—Shield structure
-
- 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
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
-
- 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
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6691—Structural association with built-in electrical component with built-in electronic circuit with built-in signalling means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention provides a separable connector for a smart grid monitoring system, which comprises a plug main body, a connecting fitting and a blocking cover, wherein the plug main body is of a hollow cavity structure, the connecting fitting is positioned in an inner cavity of the plug main body and is fixedly connected with a conductor on the blocking cover, a temperature measuring unit and a shielding cover are arranged in the blocking cover, the temperature measuring unit comprises a temperature sensor, the temperature sensor collects a temperature signal of the conductor and converts the temperature signal into an electric signal to be output, and the shielding cover is electrically disconnected from the conductor. The invention is put into use by forming electric connection between the connecting fitting and external electric equipment, a certain potential difference is generated between the conductor and the shielding case, so as to provide electric energy for the temperature measuring unit, and the actual heating temperature of the conductor in the separable connector can be conveniently monitored in real time by collecting and analyzing the electric signals emitted in the operation of the separable connector, thereby realizing that whether the separable connector is broken down or not can be effectively monitored by temperature detection.
Description
Technical Field
The invention relates to the field of structural design of separable connectors, in particular to a separable connector for a smart grid monitoring system.
Background
When cables are electrically connected to electrical equipment, it is often necessary to use separable connectors. For electrical connection between higher voltage class power equipment, for example, 10-35 kV voltage class power equipment and cables, the separable connector employed therein has a high requirement for high voltage breakdown resistance. For the separable connector in the power grid system, if the separable connector breaks down, the influence on the operation of the power grid system is great, and even the whole power grid is subjected to power outage maintenance. As the separable connector breaks down, it is typically manifested in the form of heat (temperature), light, sound, etc. However, in environments where light is strong, monitoring of light is difficult, while in external natural environments, monitoring of sound is also difficult. Therefore, in the grid monitoring system, especially in the smart grid monitoring system, it is very important to effectively monitor the breakdown of the separable connector.
Disclosure of Invention
The invention aims to solve the technical problems that: in view of the problems with the prior art, a detachable connector for a smart grid monitoring system is provided to effectively monitor whether the detachable connector is broken down.
The technical problems to be solved by the invention are realized by adopting the following technical scheme: the utility model provides a separable connector for smart power grids monitored control system, includes plug main part, link fitting and blanking cover, the plug main part is cavity structure, link fitting is arranged in plug main part inner chamber, and is connected fixedly with the conductor on the blanking cover, set up temperature measurement unit and shield cover in the blanking cover, temperature measurement unit include temperature sensor, temperature sensor gather the temperature signal of conductor to with temperature signal conversion electrical signal output, shield cover and conductor disconnect on electric.
Preferably, the temperature sensor is electrically connected with the electric signal transmitting device, and the electric signal transmitting device is powered by the voltage difference between the conductor and the shielding cover.
Preferably, the electric signal transmitting device further comprises a voltage amplifying circuit, wherein the voltage amplifying circuit is electrically connected with the electric signal transmitting device, and the voltage amplifying circuit is powered through a voltage difference between the conductor and the shielding cover.
Preferably, a front end insulating layer and a rear end insulating layer are arranged between the shielding cover and the conductor, and the shielding cover and the conductor are electrically disconnected through the front end insulating layer and the rear end insulating layer.
Preferably, a second raised step is formed on the rear insulating layer, a groove is formed on the conductor, and a clamping and fixing structure is formed between the second raised step and the groove.
Preferably, a positioning step is formed in the shielding case, and the front-end insulating layer is fixed between the shielding case and the conductor through the positioning step.
Preferably, a first arc transition structure is arranged between the side surface and the bottom end surface of the shielding cover.
Preferably, a second arc transition structure is formed in the shielding cover.
Preferably, a tightening hole is formed in the end portion of the main insulating layer of the plug.
Compared with the prior art, the invention has the beneficial effects that: after the electric connection between the connecting fitting and the external electric equipment is formed and the electric connection is put into use, a certain potential difference can be generated between the conductor and the shielding cover, so that electric energy is provided for normal operation of the temperature measuring unit, the temperature measuring unit collects heating temperature signals of the conductor and converts the temperature signals into electric signals to be output, and the actual heating temperature of the conductor inside the separable connector can be conveniently monitored in real time by collecting and analyzing the electric signals sent out by the separable connector in operation, so that whether the separable connector is broken down or not can be effectively monitored by temperature detection.
Drawings
Fig. 1 is a cross-sectional view of a detachable connector for a smart grid monitoring system of the present invention.
Fig. 2 is a cross-sectional view of the closure of fig. 1.
Fig. 3 is a structural cross-sectional view of the conductor of fig. 2.
Fig. 4 is a structural cross-sectional view of the rear insulating layer of fig. 2.
Fig. 5 is a structural cross-sectional view of the shield of fig. 2.
Fig. 6 is an electrical operation schematic diagram of the temperature measuring unit in fig. 2.
The marks in the figure: 1-plug main body, 2-connection fitting, 3-terminal, 4-inner shield, 5-blanking cap, 6-protective cap, 7-external electrical equipment, 8-ground wire, 9-stress body, 51-conductor, 52-front end insulating layer, 53-temperature measuring unit, 54-rear end insulating layer, 55-main body insulating layer, 56-tightening hole, 57-shield, 511-front end cylinder, 512-first protruding step, 513-rear end cylinder, 514-groove, 541-second protruding step, 571-positioning step, 572-side, 573-first circular arc transition structure, 574-bottom end face, 575-second circular arc transition structure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The separable connector for the intelligent power grid monitoring system shown in fig. 1 mainly comprises a plug main body 1, a connecting fitting 2 and a blanking cover 5, wherein the plug main body 1 is a hollow cavity with a T-shaped structure, a terminal 3, an inner shielding body 4, the blanking cover 5 and a stress body 9 are arranged in an inner cavity of the plug main body 1, and a grounding wire 8 is connected to the outer side of the plug main body 1. The connecting fitting 2 is a screw rod with a double-head thread structure, the inner shielding body 4 is made of a semiconductive material, and the tail part of the inner shielding body 4 and the tail part of the stress body 9 are mutually sleeved and fixed. One end of the connecting fitting 2 is a free connecting end used for being connected with external electrical equipment 7, after the other end penetrates through the terminal 3, a fixed connecting structure is formed between the connecting fitting 2 and the terminal 3 through a flat gasket, a spring gasket and a fastening nut, a detachable movable connecting structure is formed between the blanking cover 5 and the other end of the connecting fitting 2, a protective cap 6 is arranged on the outer side of the blanking cover 5, a fixed connecting structure is formed between the protective cap 6 and the plug main body 1, and the blanking cover 5 is fixed in an inner cavity of the plug main body 1.
The specific structure of the plug 5 is shown in fig. 2, and the plug comprises a conductor 51, a front end insulating layer 52, a temperature measuring unit 53, a rear end insulating layer 54, a main body insulating layer 55 and a shielding case 57, wherein the conductor 51 is made of a metal material, the front end insulating layer 52 and the rear end insulating layer 54 are made of insulating materials such as rubber, plastic or epoxy resin, the main body insulating layer 55 is made of hard insulating materials such as plastic or polyurethane, and the shielding case 57 is made of semiconductive rubber or semiconductive plastic. The main insulating layer 55 has a conical table structure, one end of which forms a hollow cavity, and the other end of which is provided with a tightening hole 56. The conductor 51 and the shielding case 57 are fixedly connected in the hollow cavity of the main insulating layer 55, the front insulating layer 52, the temperature measuring unit 53 and the rear insulating layer 54 are arranged between the shielding case 57 and the conductor 51, the temperature measuring unit 53 is positioned between the front insulating layer 52 and the rear insulating layer 54, the temperature measuring unit 53 is in contact connection with the conductor 51, and the temperature signal of the conductor 51 can be acquired through the temperature measuring unit 53. The shield 57 is electrically disconnected from the conductor 51 by the front insulating layer 52 and the rear insulating layer 54.
The structure of the conductor 51 is a hollow cavity structure as shown in fig. 3, and includes two front end cylinders 511 and a rear end cylinder 513 with different diameters, a first raised step 512 is formed between the front end cylinder 511 and the rear end cylinder 513, a semi-closed threaded connection hole is arranged in the inner cavity of the rear end cylinder 513, an annular groove 514 is arranged on the outer side of the rear end cylinder 513, and the temperature measuring unit 53 is installed between the first raised step 512 and the rear end insulating layer 54. The two ends of the connecting fitting 2 are respectively provided with a threaded connection structure, and the right end of the connecting fitting forms threaded movable connection with a semi-closed threaded connection hole in the inner cavity of the rear end cylinder 513 after penetrating through the terminal 3. The plugging cover 5 is rotated relative to the connecting fitting 2 by screwing the hole 56, so that a detachable movable connecting structure can be formed between the plugging cover 5 and the connecting fitting 2.
The rear insulating layer 54 has a half-open cavity structure, and a second raised step 541 is formed on the inner cavity side wall, as shown in fig. 4. The rear insulating layer 54 is half-coated on the closed side of the rear cylinder 513, and the conductor 51 and the rear insulating layer 54 can be connected into a whole by forming a clamping and fixing structure between the second raised step 541 and the groove 514, so that the connection reliability of the conductor 51 is improved.
The temperature measuring unit 53 specifically comprises a temperature sensor, a voltage amplifying circuit and an electric signal transmitting device, wherein the voltage amplifying circuit is electrically connected with the electric signal transmitting device and supplies power for the electric signal transmitting device, and the temperature sensor is electrically connected with the electric signal transmitting device. The temperature sensor is in direct contact with the conductor 51 and directly measures the temperature of the conductor 51. After the temperature signal of the conductor 51 is acquired by the temperature sensor, the acquired temperature signal is converted into an electrical signal and output to the electrical signal transmitting device, as shown in fig. 6. The voltage amplification circuit comprises a capacitor C, a resistor R1, a resistor R2, a resistor R3, a resistor R4 and a triode, wherein the triode is respectively and electrically connected with the resistor R2, the resistor R3 and the resistor R4, one end of the capacitor C is respectively and electrically connected with the resistor R1 and the resistor R2, and the other end of the capacitor C is respectively and electrically connected with the resistor R4 and the electric signal emitting device. The electric signal transmitting device preferably adopts the electric signal transmitting device in the prior art, such as a ZigBee module, an RF module and the like, so as to save the production cost of the separable connector.
As shown in fig. 5, the specific structure of the shield 57 is a half-open cavity structure, a positioning step 571 and a second arc transition structure 575 are disposed at the opening, a first arc transition structure 573 is disposed between a side face 572 and a bottom end face 574 of the shield 57, and the front insulating layer 52 can be fixedly mounted between the shield 57 and the conductor 51 through the first protruding step 512 on the conductor 51 and the positioning step 571 on the shield 57. By providing the first arc transition structure 573, the shield case 57 and the main body insulating layer 55 can be well contacted, and air gap discharge at the joint of the shield case 57 and the main body insulating layer 55 can be avoided; by providing the second arc transition structure 575, the front-end insulating layer 52 can be ensured to be in good contact with the conductor 51 and the shielding case 57 respectively, so that air gap discharge is prevented from being generated at the joint of the front-end insulating layer 52 and the conductor 51 and the joint of the shielding case 57 and the front-end insulating layer 52. The shielding case 57 is half-coated on the temperature measuring unit 53 and is connected with one end of the part of the temperature measuring unit 53 which obtains electric energy.
The separable connector of the invention is used in use, particularly in a smart grid monitoring system, and is electrically connected with external electrical equipment 7 through a connecting fitting 2, as shown in fig. 1. Wherein the front-end insulating layer 52 electrically isolates the conductor 51 from the shield 57, and the rear-end insulating layer 54 electrically disconnects the conductor 51 from the shield 57. Therefore, when the separable connector is put into operation, a certain potential difference is provided between the conductor 51 and the shield case 57, and the conductor 51 and the shield case 57 form an electrostatic induction electrode as shown in fig. 6. The electrostatic induction electrode can provide the required electric energy for the temperature sensor, the voltage amplifying circuit and the electric signal transmitting device, that is, the temperature measuring unit 53, including the voltage amplifying circuit and the electric signal transmitting device, can supply power through the voltage difference between the conductor 51 and the shielding case 57. It should be noted that, in addition to the potential difference between the shield 57 and the conductor 51 to provide normal operation of the electric power supply, the air gap between the internal circuits of the temperature measuring unit 53 can be shielded, so that the potential difference of the separable connector itself does not form an air discharge inside the temperature measuring unit 53 during normal operation.
Since the temperature measuring unit 53 in the separable connector can collect the heat-generating temperature signal of the conductor 51 and convert the temperature signal into an electrical signal for output, the electrical signal emitted by the separable connector in operation is closely related to the heat-generating temperature of the conductor 51 inside the separable connector, and the heat-generating temperature of the conductor 51 is output in real time in the form of an electrical signal. The actual heating temperature of the inner conductor 51 of the separable connector can be conveniently monitored by collecting and analyzing the electric signals sent out by the separable connector in operation, so that whether the separable connector is broken down or not can be effectively monitored by temperature detection.
The foregoing description of the preferred embodiment of the invention is not intended to be limiting, but rather to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. The utility model provides a separable connector for smart power grids monitored control system, includes plug main part (1), link fitting (2) and blanking cover (5), plug main part (1) is cavity structure, link fitting (2) are located plug main part (1) inner chamber, and are connected fixedly with conductor (51) on blanking cover (5), its characterized in that: the blanking cover (5) is internally provided with a temperature measuring unit (53) and a shielding cover (57), the temperature measuring unit (53) comprises a temperature sensor, the temperature sensor collects temperature signals of the conductor (51) and converts the temperature signals into electric signals to be output, and the shielding cover (57) is electrically disconnected from the conductor (51).
2. The separable connector for a smart grid monitoring system of claim 1, wherein: the temperature sensor is characterized by further comprising an electric signal transmitting device, wherein the electric signal transmitting device is electrically connected with the temperature sensor, and the electric signal transmitting device is powered by a voltage difference between the conductor (51) and the shielding case (57).
3. The separable connector for a smart grid monitoring system of claim 2, wherein: the electric signal transmission device further comprises a voltage amplifying circuit, wherein the voltage amplifying circuit is electrically connected with the electric signal transmission device, and the voltage amplifying circuit is powered through a voltage difference between the conductor (51) and the shielding case (57).
4. A detachable connector for a smart grid monitoring system according to any one of claims 1-3, wherein: a front end insulating layer (52) and a rear end insulating layer (54) are arranged between the shielding cover (57) and the conductor (51), and the shielding cover (57) and the conductor (51) are electrically disconnected through the front end insulating layer (52) and the rear end insulating layer (54).
5. The separable connector for a smart grid monitoring system of claim 4, wherein: the rear end insulating layer (54) is provided with a second raised step (541), the conductor (51) is provided with a groove (514), and a clamping and fixing structure is formed between the second raised step (541) and the groove (514).
6. The separable connector for a smart grid monitoring system of claim 4, wherein: a positioning step (571) is formed in the shielding case (57), and the front end insulating layer (52) is fixed between the shielding case (57) and the conductor (51) through the positioning step (571).
7. The separable connector for a smart grid monitoring system of claim 4, wherein: a first arc transition structure (573) is provided between the side surface (572) and the bottom end surface (574) of the shield case (57).
8. The separable connector for a smart grid monitoring system of claim 4, wherein: a second arc transition structure (575) is formed in the shielding cover (57).
9. A detachable connector for a smart grid monitoring system according to any one of claims 1-3, wherein: a tightening hole (56) is formed at the end part of the main body insulating layer (55) of the plug cover (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710915982.0A CN107462820B (en) | 2017-09-30 | 2017-09-30 | A separable connector for smart power grids monitored control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710915982.0A CN107462820B (en) | 2017-09-30 | 2017-09-30 | A separable connector for smart power grids monitored control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107462820A CN107462820A (en) | 2017-12-12 |
| CN107462820B true CN107462820B (en) | 2023-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710915982.0A Active CN107462820B (en) | 2017-09-30 | 2017-09-30 | A separable connector for smart power grids monitored control system |
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| CN (1) | CN107462820B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019192482A (en) * | 2018-04-25 | 2019-10-31 | 矢崎総業株式会社 | Charge connector |
| CN108711817A (en) * | 2018-08-16 | 2018-10-26 | 四川瑞霆电力科技有限公司 | The insulation plug of elbow-type cable connector with temp sensing function |
| CN110601125B (en) * | 2019-08-29 | 2020-10-23 | 深圳供电局有限公司 | Cable accessory structure |
| JP7139072B2 (en) * | 2019-09-03 | 2022-09-20 | 矢崎総業株式会社 | connector connection structure |
| CN110763367A (en) * | 2019-11-16 | 2020-02-07 | 福州许继电气有限公司 | Cable head wireless temperature measurement insulating plug and working method thereof |
| CN111157130B (en) * | 2020-03-03 | 2024-06-14 | 成都盛帮双核科技有限公司 | Main bus temperature measuring device of metal closed switch |
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| CN101388536B (en) * | 2007-09-11 | 2013-05-29 | 3M创新有限公司 | Connector sleeve and cable connector component having the same |
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| CN102214870A (en) * | 2011-03-22 | 2011-10-12 | 广东吉熙安电缆附件有限公司 | Intelligent separable connector |
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| CN107462820A (en) | 2017-12-12 |
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