CN111579946B - Testing arrangement is put in cable oscillatory wave office - Google Patents
Testing arrangement is put in cable oscillatory wave office Download PDFInfo
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- CN111579946B CN111579946B CN202010452102.2A CN202010452102A CN111579946B CN 111579946 B CN111579946 B CN 111579946B CN 202010452102 A CN202010452102 A CN 202010452102A CN 111579946 B CN111579946 B CN 111579946B
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- cable
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- groove
- testing
- partial discharge
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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
- G01R31/1272—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 of cable, line or wire insulation, e.g. using partial discharge measurements
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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
-
- 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
- G01R1/0425—Test clips, e.g. for IC's
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention provides a cable oscillatory wave partial discharge testing device, when a cable extends into a barrel, the cable sequentially passes through a clamping mechanism and an infrared geminate transistor and then contacts with a limit ring, and a press button on the limit ring is triggered, when a controller loses an electric signal sent by the infrared geminate transistor and receives an electric signal sent by the press button, the clamping mechanism is driven to clamp the cable, an electric telescopic rod is driven to drive the barrel to move towards the interior of a testing box body along a through groove, so that the limit ring is embedded into a groove, then the movement of the barrel is stopped, at the moment, the cable can be in contact with an electric connection part to establish an electric connection relation, and under the action of the clamping mechanism and the electric telescopic rod, the cable can be prevented from falling off, the testing effect is ensured, and the testing efficiency is improved.
Description
Technical Field
The invention relates to the technical field of power system detection, in particular to a cable oscillatory wave partial discharge testing device.
Background
The cable oscillation wave partial discharge detection technology is a novel cable partial discharge fault detection technology, based on an LCR damped oscillation principle, on the basis of completing direct current charging of a cable, a damping oscillation wave is generated through a built-in high-voltage reactor, a high-voltage real-time solid-state switch and the tested cable, applied oscillation wave voltage excites a discharge signal of the cable, then the partial discharge signal is detected based on a pulse current method, and the detection, acquisition and uploading of the partial discharge signal are completed by matching with high-speed data acquisition equipment, so that fault detection and positioning are performed on the test cable.
Testing arrangement is put in present cable oscillatory wave office when testing the cable, all needs the manual work to await measuring the cable and is connected with the testing arrangement electricity, for guaranteeing that the cable that awaits measuring can be connected with the stable electricity of testing arrangement, generally all need consume the tester a large amount of time and connect fixedly, lead to efficiency of software testing lower, in the test procedure, the cable head condition of droing still can appear, and after the test is accomplished, need spend more time again and dismantle the cable, consume more manpower.
Disclosure of Invention
Therefore, the cable oscillation wave partial discharge testing device provided by the invention has the advantages that after the cable is stretched into the cylinder, the stretching condition of the cable can be detected, then the cable is automatically clamped and pulled and is electrically connected with the electric connection part on the testing box body, so that the cable is stably and electrically connected with the testing box body, the use of manpower can be reduced, the cable oscillation wave partial discharge testing device is convenient to disassemble and assemble, and the cable oscillation wave partial discharge testing device is convenient to disassemble and assemble
The technical scheme of the invention is realized as follows:
a cable oscillatory wave partial discharge testing device comprises a testing box body, a cable connecting part, a cable extension detecting mechanism and a control mechanism, wherein the cable connecting part is connected with the testing box body; an electric connection part, a groove and a through groove are concentrically arranged on the outer surface of the test box body from inside to outside in sequence, and the through groove is communicated with the inside and the outside of the device main body; the cable connecting part comprises a barrel, a limiting ring and a clamping mechanism, the limiting ring is arranged in the barrel, the clamping mechanism is arranged at the inlet of the barrel, and the barrel penetrates into the test box body from the through groove; the cable stretches into detection mechanism and includes infrared geminate transistors and presses the button, infrared geminate transistors symmetry sets up in the barrel inner wall, it sets up on the spacing ring to press the button, control mechanism includes controller and electric telescopic handle, electric telescopic handle stretches into the one end of test box with the barrel and is connected, the controller respectively with infrared geminate transistors, press button and electric telescopic handle electricity and be connected, electric telescopic handle pulling barrel makes in the recess to test box inside removal.
Preferably, a stop button is arranged on the test box body and electrically connected with the controller.
Preferably, the lateral wall of the through groove is provided with a sliding groove, the outer surface of the barrel is provided with a sliding strip, and the sliding strip penetrates through the sliding groove to enter the inside of the test box body.
Preferably, a trigger button is arranged on the groove and electrically connected with the controller.
Preferably, the clamping mechanism comprises a metal clamping sheet, a clamping spring and an electromagnet, one end of the metal clamping sheet extends into the inner wall of the cylinder body and is connected with the clamping spring, the other end of the metal clamping sheet is located inside the cylinder body, the electromagnet is arranged in the inner wall of the cylinder body and is located in the direction opposite to the ejection direction of the metal clamping sheet, and the controller is electrically connected with the electromagnet.
Preferably, one end of the metal clamping sheet positioned in the cylinder body is provided with engaging teeth.
Preferably, the outer surface of the test box body is also provided with a display screen.
Preferably, the recess passes through the connecting rod and leads to groove surface connection, be provided with the bar groove on the barrel, when the barrel passed logical groove, the connecting rod was located the bar groove.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a cable oscillatory wave partial discharge testing device, when a cable extends into a cylinder, the cable can cut off a light path between infrared geminate transistors, when the cable is contacted with a limit ring, a press button on the limit ring can be triggered, a controller controls an electric telescopic rod to pull the cylinder to move towards the inside of a testing box body at the moment, so that the limit ring is embedded into a groove, a cable head can be in close contact with an electric connection part on the testing box body at the moment, the cable is prevented from falling in the testing process, the normal testing is ensured, the fixing process of the cable is automatically carried out, only a tester needs to extend the cable into the cylinder, the working strength of the tester is reduced, the use of manpower is reduced, and the testing efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a cable oscillatory wave partial discharge testing device according to the present invention;
fig. 2 is a schematic structural diagram of a cable penetration detection mechanism of the cable oscillatory wave partial discharge testing device according to the present invention;
fig. 3 is a schematic side structure view of a test box of the cable oscillatory wave partial discharge test device according to the present invention;
fig. 4 is a schematic structural diagram of a cylinder of the cable oscillatory wave partial discharge testing device according to the present invention;
fig. 5 is a schematic circuit diagram of a cable oscillatory wave partial discharge testing device according to the present invention;
in the figure, 1 is the test box, 2 is cable junction portion, 3 is the electric connection portion, 4 is the recess, 5 is logical groove, 6 is the barrel, 7 is the spacing ring, 8 is infrared geminate transistors, 9 is for pressing the button, 10 is the controller, 11 is electric telescopic handle, 12 is stop button, 13 is the spout, 14 is the draw runner, 15 is trigger button, 16 is the metal clamp piece, 17 is clamping spring, 18 is the electro-magnet, 19 is the interlock tooth, 20 is the display screen, 21 is the connecting rod, 22 is the bar groove.
Detailed Description
For a better understanding of the technical content of the present invention, a specific embodiment is provided below, and the present invention is further described with reference to the accompanying drawings.
Referring to fig. 1 to 5, the cable oscillatory wave partial discharge testing device provided by the present invention includes a testing box 1, a cable connection portion 2, a cable insertion detection mechanism and a control mechanism, wherein the cable connection portion 2 is connected to the testing box 1, the cable insertion detection mechanism is disposed in the cable connection portion 2, and the control mechanism is disposed in the testing box 1; an electric connection part 3, a groove 4 and a through groove 5 are concentrically arranged on the outer surface of the test box body 1 from inside to outside in sequence, and the through groove 5 is communicated with the inside and the outside of the device main body; the cable connecting part 2 comprises a cylinder 6, a limiting ring 7 and a clamping mechanism, wherein the limiting ring 7 is arranged inside the cylinder 6, the clamping mechanism is arranged at an inlet of the cylinder 6, and the cylinder 6 penetrates into the test box body 1 from the through groove 5; the cable stretches into detection mechanism and includes infrared geminate transistors 8 and presses down button 9, 8 symmetries of infrared geminate transistors set up in 6 inner walls of barrel, it sets up on spacing ring 7 to press down button 9, control mechanism includes controller 10 and electric telescopic handle 11, electric telescopic handle 11 stretches into the one end of test box 1 with barrel 6 and is connected, controller 10 respectively with infrared geminate transistors 8, press down button 9 and 11 electricity of electric telescopic handle are connected, 11 pulling barrels of electric telescopic handle are 6 to the inside removal of test box 1, make spacing ring 7 embed into in the recess 4.
The invention relates to a cable oscillatory wave partial discharge testing device, which is used for oscillatory wave partial discharge testing of a cable, wherein the cable is connected with a testing box body 1 through a cable connecting part 2 and then is subjected to oscillatory wave partial discharge testing through the testing box body 1, a cable extension detecting mechanism is arranged for facilitating the installation and the disassembly of the cable in the testing process, the cable is extended into a cylinder body 6 during the testing process, so that the cable sequentially passes through a clamping mechanism and an infrared geminate transistor 8 and then reaches a position of a limiting ring 7, when the cable passes through the infrared geminate transistor 8, a light path between the infrared geminate transistors 8 is cut off, the infrared geminate transistor 8 cannot generate an electric signal and send the electric signal to a controller 10, when the cable is contacted with the limiting ring 7, a press button 9 on the limiting ring 7 is triggered, the press button 9 sends the electric signal to the controller 10, and the controller 10 judges that the cable is completely extended into the cylinder body 6, then the controller 10 controls the electric telescopic rod 11 to make the electric telescopic rod 11 pull the cylinder 6 to drive the cable to enter the test box 1 along the through groove 5 on the side wall of the test box 1, when the limiting ring 7 is embedded into the groove 4, the controller 10 stops driving the electric telescopic rod 11, at this time, the end part of the cable is contacted with the electric connection part 3 on the side wall of the test box body 1 to establish an electric connection relation, thereby, the partial discharge test of the cable oscillatory wave can be carried out, and the cable is tightly fixed under the action of the clamping mechanism and the electric telescopic rod 11, and is always contacted with the electric connection part 3, so that the falling-off phenomenon of the cable can be prevented in the test process, and in the whole test process, only the tester needs to stretch the cable into the barrel 6, and subsequent driving and electric connection are automatically performed, so that the working strength of the tester can be reduced, and the test efficiency is improved.
For the invention, the barrel 6 is a hollow structure, the limit ring 7 is located at the middle position, the limit ring 7 and the groove 4 are of a matched structure, the thickness of the limit ring is equal to the depth of the groove 4, the inner diameter of the limit ring 7 is larger than the diameter of the electric connection part 3, the diameter of the cable is smaller than the outer diameter of the limit ring 7 and larger than the inner diameter of the limit ring 7, so that the cable does not penetrate through the middle part of the limit ring 7 but contacts with the side wall of the limit ring 7 and triggers the press button 9 on the side wall of the limit ring 7, and after the test is finished, the controller 10 can control the electric telescopic rod 11 to drive the barrel 6 to move outwards, so that a tester can take out the cable from the barrel 6 after the cable leaves the electric connection part 3.
Preferably, a stop button 12 is disposed on the testing box 1, and the stop button 12 is electrically connected to the controller 10.
After the test is completed, the tester presses the stop button 12, and the stop button 12 sends an electrical signal to the controller 10, so that the controller 10 controls the electric telescopic rod 11 to push the barrel 6 to move outwards.
Preferably, a sliding groove 13 is formed in the side wall of the through groove 5, a sliding strip 14 is arranged on the outer surface of the cylinder 6, and the sliding strip 14 penetrates through the sliding groove 13 and enters the test box body 1.
When 11 drive barrels of electric telescopic handle 6 removed, 6 surfaces of barrels set up and can remove along the spout 13 that leads to the groove 5 lateral wall at draw runner 14, can realize spacing to 6 removal of barrels through setting up draw runner 14, prevent that the skew from appearing at the removal in-process in barrels 6.
Preferably, a trigger button 15 is arranged on the groove 4, and the trigger button 15 is electrically connected with the controller 10.
When the barrel 6 moves towards the interior of the test box body 1, the limiting ring 7 is embedded into the groove 4 and then contacts with the trigger button 15, so that the trigger button 15 is triggered, an electric signal is sent to the controller 10, the controller 10 controls the electric telescopic rod 11 to stop driving the barrel 6 to move, and excessive movement of the barrel 6 is prevented.
Preferably, the clamping mechanism comprises a metal clamping sheet 16, a clamping spring 17 and an electromagnet 18, one end of the metal clamping sheet 16 extends into the inner wall of the cylinder 6 and is connected with the clamping spring 17, the other end of the metal clamping sheet is located inside the cylinder 6, the electromagnet 18 is arranged in the inner wall of the cylinder 6 and is located in the opposite direction of the ejection direction of the metal clamping sheet 16, the controller 10 is electrically connected with the electromagnet 18, and one end of the metal clamping sheet 16 located inside the cylinder 6 is provided with an engagement tooth 19.
When the electric telescopic rod 11 drives the barrel 6 to move inwards, the clamping mechanism can clamp the cable, so that the barrel 6 drives the cable to move synchronously, the clamping mechanism is in an automatic triggering mode, when the cable is in contact with the limiting ring 7, so that the press button 9 is triggered, the controller 10 receives an electric signal sent by the press button 9 and then drives the electric telescopic rod 11 to act, meanwhile, the power supply to the electromagnet 18 is cut off, so that the electromagnet 18 loses magnetism after being powered off, and the metal clamping sheet 16 pops out and clamps the cable under the action of the clamping spring 17 after losing the magnetic attraction of the electromagnet 18, so that the metal clamping sheet 16 can clamp the cable while the electric telescopic rod 11 drives the barrel 6 to move, so that the cable moves synchronously, and the meshing teeth 19 arranged at the end part of the metal clamping sheet 16 can increase the contact friction with the cable, preventing the metal clamping piece 16 from sliding on the outer surface of the cable when the barrel 6 is moved.
After the test is finished, when a tester presses the stop button 12 on the test box body 1, the controller 10 controls the power supply to supply power to the electromagnet 18, the electromagnet 18 is magnetic after being electrified, and the magnetic force of the electromagnet is greater than the elastic force of the clamping spring 17, so that the metal clamping sheet 16 can be attracted to move towards the inner wall, the metal clamping sheet 16 leaves the cable, and the cable can be conveniently taken out of the barrel body 6.
Preferably, the outer surface of the test box body 1 is further provided with a display screen 20.
During the test, the test result is displayed on the display screen 20.
Preferably, recess 4 passes through connecting rod 21 and 5 surface connections that lead to the groove, be provided with bar groove 22 on barrel 6, when barrel 6 passed logical groove 5, connecting rod 21 was located bar groove 22.
The groove 4 is connected with the through groove 5 through the connecting rod 21, the strip-shaped groove 22 arranged on the outer surface of the cylinder 6 can slide along the connecting rod 21 in the moving process of the cylinder 6, and the strip-shaped groove 22 is communicated with the inside of the cylinder 6.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (8)
1. The cable oscillatory wave partial discharge testing device is characterized by comprising a testing box body, a cable connecting part, a cable stretching detection mechanism and a control mechanism, wherein the cable connecting part is connected with the testing box body; an electric connection part, a groove and a through groove are sequentially and concentrically arranged on the outer surface of the test box body from inside to outside, and the through groove is communicated with the inside and the outside of the device main body; the cable connecting part comprises a barrel, a limiting ring and a clamping mechanism, the limiting ring is arranged in the barrel, the clamping mechanism is arranged at the inlet of the barrel, and the barrel penetrates into the test box body from the through groove; the cable stretching detection mechanism comprises infrared geminate transistors and a press button, the infrared geminate transistors are symmetrically arranged in the inner wall of the barrel, the press button is arranged on a limiting ring, the control mechanism comprises a controller and an electric telescopic rod, the electric telescopic rod is connected with one end, stretching into the testing box, of the barrel, the controller is electrically connected with the infrared geminate transistors, the press button and the electric telescopic rod respectively, and the electric telescopic rod pulls the barrel to move towards the inside of the testing box, so that the limiting ring is embedded into the groove; stretch into the cable in the barrel, make the cable pass in proper order reach spacing ring department behind clamping mechanism and the infrared geminate transistor to make and press the button and triggered, after the controller received the signal of telecommunication that presses the button and send, drive electric telescopic handle pulling barrel and cable moved to test box inside, made cable tip and electric connection portion contact.
2. The device for testing partial discharge of cable oscillatory waves according to claim 1, wherein a stop button is disposed on the testing box, and the stop button is electrically connected to the controller.
3. The device for testing partial discharge of cable oscillatory waves according to claim 1, wherein a sliding slot is formed in a side wall of the through slot, and a sliding strip is arranged on an outer surface of the cylinder and penetrates through the sliding slot to enter the inside of the test box body.
4. The device for testing partial discharge of cable oscillatory waves according to claim 1, wherein a trigger button is disposed on the groove, and the trigger button is electrically connected to the controller.
5. The cable oscillatory wave partial discharge testing device according to claim 1, wherein the clamping mechanism comprises a metal clamping piece, a clamping spring and an electromagnet, one end of the metal clamping piece extends into the inner wall of the cylinder body and is connected with the clamping spring, the other end of the metal clamping piece is located inside the cylinder body, the electromagnet is arranged in the inner wall of the cylinder body and is located opposite to the ejection direction of the metal clamping piece, and the controller is electrically connected with the electromagnet.
6. The device for testing partial discharge of oscillating waves in cable according to claim 5, wherein the metal clamping piece is provided with engaging teeth at one end inside the cylinder.
7. The cable oscillatory wave partial discharge testing device according to claim 1, wherein a display screen is further disposed on an outer surface of the testing box.
8. The device as claimed in claim 1, wherein the groove is connected to the surface of the through groove through a connecting rod, the barrel is provided with a strip-shaped groove, and the connecting rod is located in the strip-shaped groove when the barrel passes through the through groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010452102.2A CN111579946B (en) | 2020-05-26 | 2020-05-26 | Testing arrangement is put in cable oscillatory wave office |
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| CN202010452102.2A CN111579946B (en) | 2020-05-26 | 2020-05-26 | Testing arrangement is put in cable oscillatory wave office |
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| CN111579946A CN111579946A (en) | 2020-08-25 |
| CN111579946B true CN111579946B (en) | 2022-07-19 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111929550B (en) * | 2020-09-15 | 2023-08-22 | 海南电网有限责任公司电力科学研究院 | Power equipment partial discharge judging device |
| CN114217188B (en) * | 2021-12-17 | 2023-12-29 | 江苏锦秀高压电器有限公司 | Protective device for power frequency partial discharge-free test complete equipment |
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