CN119024231A - A transformer fault monitoring device - Google Patents
A transformer fault monitoring device Download PDFInfo
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- CN119024231A CN119024231A CN202411500854.6A CN202411500854A CN119024231A CN 119024231 A CN119024231 A CN 119024231A CN 202411500854 A CN202411500854 A CN 202411500854A CN 119024231 A CN119024231 A CN 119024231A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 57
- 238000012544 monitoring process Methods 0.000 claims abstract description 38
- 238000009413 insulation Methods 0.000 claims abstract description 27
- 238000004804 winding Methods 0.000 claims abstract description 21
- 238000003780 insertion Methods 0.000 claims description 17
- 230000037431 insertion Effects 0.000 claims description 17
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 3
- 238000007906 compression Methods 0.000 claims 3
- 238000005096 rolling process Methods 0.000 abstract description 5
- 239000000523 sample Substances 0.000 abstract description 4
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- 238000000576 coating method Methods 0.000 abstract description 2
- 239000011324 bead Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
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- 238000000429 assembly Methods 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
-
- 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
-
- 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
-
- 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
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention relates to the technical field of transformer fault monitoring, in particular to a transformer fault monitoring device, which comprises: the cable protection device comprises a control mechanism, a linkage distance control mechanism, an insulation resistance monitoring mechanism and a protection assembly for coating a cable; the linkage distance control mechanism comprises a telescopic support rod assembly; the insulation resistance monitoring mechanism comprises a pressure-bearing cover and a positioning assembly, and the positioning assembly can rotate relative to the pressure-bearing cover so as to clamp a part to be tested of the cable; the protection component is used for wrapping the part to be tested of the cable; and a rolling component is arranged on the linkage distance control mechanism so as to drive the positioning component to rotate relative to the pressure-bearing cover, thereby clamping or loosening the part to be tested of the cable. Through setting up traditional probe into the insulation resistance monitoring mechanism of hasp to cable outside, can make the cable await measuring the position in the sealed monitoring environment of no interference through the protection component, improved the accuracy of monitoring. The length of the device can be extended and contracted through the linkage distance control mechanism, and the opening and closing operation of the positioning assembly and the pressure-bearing cover can be realized through the winding assembly.
Description
Technical Field
The invention relates to the technical field of transformer fault monitoring, in particular to a transformer fault monitoring device.
Background
At present, the maintenance of the transformer is an important research object in the global economic scope, and because the transformer bears the normal operation results of a plurality of devices, the maintenance technology of the transformer is a problem worthy of discussion, and only if normal operation inspection, daily maintenance and the like of the transformer are performed, the transformer can be processed in time when emergency problems are encountered, so that the transformer operates normally, and therefore, the monitoring and the investigation aiming at the faults of the transformer are necessary measures for prolonging the service life of the transformer.
According to the different types of demand, the transformer is different, be different from the monitoring of putting ground transformer, it is higher to put overhead transformer monitoring degree of difficulty in the open air, because outdoor overhead transformer exposes in external environment for a long time, in overcast and rainy season and the continuous rising of temperature, peripheral various factors can cause ageing to the cable of outdoor transformer, and then can be broken down by the electric current, wherein impurity that wafts in the humid air stream is accumulated behind the cable top layer, the insulating properties of cable insulating layer just can reduce, the ageing and the corruption of cable insulating layer have been accelerated, can cause the transformer to damage when serious.
In view of this, a transformer fault monitoring device is designed to facilitate rapid and interference-free insulation resistance monitoring of outdoor overhead transformer cables.
Disclosure of Invention
The present invention aims to solve one of the technical problems existing in the prior art or related technologies.
The technical scheme adopted by the invention is as follows:
A transformer fault monitoring device, comprising: the cable protection device comprises a control mechanism, a linkage distance control mechanism arranged on the control mechanism, an insulation resistance monitoring mechanism arranged on the linkage distance control mechanism and a protection component for coating a cable;
the control mechanism comprises an insulating grab handle;
The linkage distance control mechanism comprises a telescopic support rod assembly, a chuck is arranged at the upper end of the support rod assembly, and the lower end of the support rod assembly is connected with the insulating grab handle;
The insulation resistance monitoring mechanism comprises a pressure-bearing cover movably arranged in the chuck and a positioning assembly arranged on the pressure-bearing cover, an electrode is arranged on the inner side of the pressure-bearing cover and connected with a wire, the wire is used for being connected with a rocking meter, one side of the positioning assembly and one side of the pressure-bearing cover are respectively provided with a soft rubber pad, the positioning assembly can rotate relative to the pressure-bearing cover so as to clamp a cable part to be tested, and the two soft rubber pads are used for sealing and clamping the cable part to be tested;
The protection assembly comprises a first corrugated pipe and a second corrugated pipe, wherein the first corrugated pipe and the second corrugated pipe are used for wrapping a part to be tested of the cable, the first corrugated pipe is connected with the pressure-bearing cover, and the second corrugated pipe is connected with the positioning assembly;
The winding assembly comprises a winding roller and a inhaul cable, one end of the inhaul cable is connected with the positioning assembly, the other end of the inhaul cable is wound on the winding roller, and the winding roller is used for winding and unwinding the inhaul cable so as to drive the positioning assembly to rotate relative to the pressure-bearing cover, so that the cable to be measured is clamped or loosened.
The present invention may be further configured in a preferred example to: the control mechanism further comprises a clamp arranged outside the insulating grab handle, a spring arranged inside the clamp, an inserting block movably arranged inside the clamp and a guiding wheel movably arranged inside the clamp, an annular groove is formed in the periphery of the guiding wheel, an arc-shaped groove corresponding to the annular groove is formed in one end of the inserting block, a wire penetrates through the annular groove and the arc-shaped groove, and the spring is used for propping the inserting block tightly so as to clamp the wire in the annular groove and the arc-shaped groove.
The present invention may be further configured in a preferred example to: the support rod assembly comprises a first support assembly arranged on the insulating grab handle, a second support assembly arranged in the first support assembly and a third support assembly arranged in the second support assembly, the clamping head is arranged at the upper end of the third support assembly, and the winding assembly is arranged on the first support assembly.
The present invention may be further configured in a preferred example to: the first support assembly comprises a first support tube, a first bearing arranged in the inner cavity of the first support tube and a first beam shaft arranged in the first bearing, and the first support tube is arranged on the insulating grab handle;
A first cylindrical end head is arranged at the top end of the first beam shaft, and a first jack is formed in the first beam shaft;
the second support assembly comprises a second support pipe movably arranged in the first support pipe, and a second beam shaft which is arranged in the inner cavity of the second support pipe and is inserted into the first beam shaft;
A second cylindrical end head is arranged at the top of the second beam shaft, a second jack is formed in the second beam shaft, and the lower end of the second beam shaft is penetrated into the first beam shaft in an adaptive manner through the first jack;
The third support assembly comprises a third support pipe movably arranged in the second support pipe, a second bearing arranged in the third support pipe and a third beam shaft arranged in the second bearing;
The lower end of the third beam shaft is penetrated into the second beam shaft through the second jack in an adapting way, and the top end of the third beam shaft is provided with a third jack;
The linkage distance control mechanism further comprises a rotation assisting shaft arranged in the chuck, the rotation assisting shaft comprises a deflection gear, a guide rod and a cross-shaped end rod, the guide rod is rotatably connected in the chuck, the deflection gear is connected to the upper end of the guide rod, the cross-shaped end rod is arranged at the lower end of the guide rod, and the cross-shaped end rod is inserted into the third jack;
The insulation resistance monitoring mechanism further comprises a driven gear arranged on the shaft lever at the bottom end of the pressure-bearing cover, and the driven gear is meshed with the deflection gear.
The present invention may be further configured in a preferred example to: the insulating grab handle is internally provided with a motor and a storage battery, the storage battery is connected with the motor, the motor is connected with the first beam shaft, and the motor is used for driving the first beam shaft to rotate so as to drive the second beam shaft and the third beam shaft to rotate, so that the pressure-bearing cover is driven to rotate relative to the clamping head through the deflection gear and the driven gear.
The present invention may be further configured in a preferred example to: the outer sides of the upper ends of the first supporting tube, the second supporting tube and the third supporting tube are respectively provided with an anti-slip buckle, and the anti-slip buckle is provided with a lead hole for the lead wire and the inhaul cable to pass through.
The present invention may be further configured in a preferred example to: the insulation resistance monitoring mechanism further comprises two groups of limiting clamps fixedly installed on the pressure-bearing cover and an adapter installed on the electrode pole, one end of the wire is connected with the adapter, two deflection-preventing baffles are arranged on the outer side of the pressure-bearing cover, and the inhaul cable is arranged between the two deflection-preventing baffles.
The present invention may be further configured in a preferred example to: the positioning assembly comprises a fixed cover;
One end of the fixed cover is hinged to one end of the pressure-bearing cover, the other end of the fixed cover is clamped to the other end of the pressure-bearing cover, two insertion holes are formed in the clamping end of the fixed cover, two pressure springs are arranged in the two insertion holes, one ends, deviating from each other, of the two pressure springs are respectively provided with a sliding bead, clamping holes are formed in the clamping end of the fixed cover, and the sliding beads are clamped in the clamping holes under the action of the elastic force of the pressure springs;
The outside of fixed cover is equipped with the holder, the top of cable is connected on the holder.
The present invention may be further configured in a preferred example to: the two soft rubber mats are integrally in a horn-shaped structure after being buckled.
The present invention may be further configured in a preferred example to: the protection assembly further comprises a first ring buckle and a second ring buckle, T-shaped ring buckles are arranged at the outer ends of the first corrugated pipe and the second corrugated pipe, and the two T-shaped ring buckles are respectively and adaptively clamped in the first ring buckle and the second ring buckle.
By adopting the technical scheme, the beneficial effects obtained by the invention are as follows:
1. According to the invention, the traditional probe is arranged as the insulation resistance monitoring mechanism locked to the outside of the cable, the part to be tested of the cable can be in a non-interference sealed monitoring environment through the protection component, at the moment, each part of the cable can be subjected to selective insulation resistance test, and the monitoring accuracy is improved.
2. According to the invention, the linkage distance control mechanism is arranged, so that the length can be extended and contracted, and the opening and closing operation of the positioning assembly and the pressure-bearing cover can be realized through the rolling assembly, so that the locking is convenient to be carried out outside the cable during testing, the stability during testing is further improved, the insulating grab handle is not required to be held for a long time manually, the labor intensity can be effectively reduced, and the working safety is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a transformer fault monitoring device provided by the invention;
FIG. 2 is a schematic view of a protective assembly according to the present invention;
FIG. 3 is a schematic diagram of an insulation resistance monitoring mechanism according to the present invention;
FIG. 4 is a schematic diagram of a positioning assembly according to the present invention;
FIG. 5 is an enlarged schematic view of the invention at A in FIG. 4;
FIG. 6 is a schematic view of a pressure housing of the present invention;
FIG. 7 is a schematic diagram of a control mechanism of the present invention;
FIG. 8 is an enlarged schematic view of the invention at B in FIG. 7;
FIG. 9 is a schematic drawing of a coordinated distance control mechanism of the present invention;
FIG. 10 is an enlarged schematic view of the present invention at C in FIG. 9;
FIG. 11 is an enlarged schematic view of the invention at D in FIG. 9;
FIG. 12 is a schematic cross-sectional view of three stay tubes of the present invention;
FIG. 13 is an enlarged schematic view of a third support assembly according to the present invention;
FIG. 14 is an enlarged partial schematic view of a second support assembly and a third support assembly of the present invention;
FIG. 15 is an enlarged partial schematic view of a first support assembly and a second support assembly of the present invention;
Fig. 16 is an enlarged schematic view of the bottom of the first support assembly of the present invention.
Reference numerals:
100. A control mechanism; 110. an insulating handle; 120. a motor; 130. a storage battery; 140. a cover; 150. a clamp; 160. a spring; 170. inserting blocks; 180. a guide wheel;
200. A linkage distance control mechanism; 210. a first support assembly; 211. a first stay tube; 212. a first bearing; 213. a first beam shaft; 220. a second support assembly; 221. a second stay tube; 222. a second beam axis; 230. a third support assembly; 231. a third stay tube; 232. a second bearing; 233. a third beam axis; 240. a winding assembly; 241. locking; 242. a wind-up roll; 243. a guy cable; 244. a rocker; 245. a bolt; 250. a chuck; 260. an anti-slip button; 270. a rotation-assisting shaft;
300. An insulation resistance monitoring mechanism; 310. a pressure-bearing cover; 320. an electrode; 330. an adapter; 340. a wire; 350. a limiting clamp; 360. a driven gear; 370. a positioning assembly; 371. a fixed cover; 372. a pressure spring; 373. a sliding bead; 380. an anti-deflection baffle; 390. a soft rubber pad;
400. A protective assembly; 410. a first bellows; 420. a second bellows; 430. a first loop; 440. and a second ring buckle.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present invention and features in the embodiments may be combined with each other.
It is to be understood that this description is merely exemplary in nature and is not intended to limit the scope of the present invention.
A transformer fault monitoring device according to some embodiments of the present invention is described below with reference to the accompanying drawings.
Referring to fig. 1 to 16, the transformer fault monitoring device provided by the present invention includes a control mechanism 100, a linkage distance control mechanism 200 disposed on the control mechanism 100, an insulation resistance monitoring mechanism 300 disposed on the linkage distance control mechanism 200, and a protection assembly 400 for covering a cable.
The control mechanism 100 comprises an insulating grab handle 110, a motor 120 arranged in the insulating grab handle 110, a storage battery 130 arranged in the insulating grab handle 110, a sealing cover 140 arranged at the bottom of the insulating grab handle 110, a clamp 150 arranged outside the insulating grab handle 110, a spring 160 arranged in the clamp 150, an insertion block 170 movably arranged in the clamp 150 and a guide wheel 180 movably arranged in the clamp 150, wherein an annular groove is formed in the periphery of the guide wheel 180, one end of the insertion block 170 is provided with an arc groove corresponding to the annular groove, a wire 340 penetrates through the annular groove and the arc groove, the spring 160 is used for tightly propping the insertion block 170 so as to clamp the wire 340 in the annular groove and the arc groove, and the insulating grab handle 110 consists of a plastic outer barrel and an insulating anti-slip sleeve; the top of the transmission shaft in the motor 120 is provided with a hole;
The linkage distance control mechanism 200 comprises a telescopic support rod assembly, wherein the upper end of the support rod assembly is provided with a chuck 250, and the lower end of the support rod assembly is connected with an insulating grab handle 110; the support rod assembly comprises a first support assembly 210 arranged on the insulating grab handle 110, a rolling assembly 240 arranged on the first support assembly 210, a second support assembly 220 arranged in the first support assembly 210, a third support assembly 230 arranged in the second support assembly 220, a chuck 250 arranged at the upper end of the third support assembly 230, and the rolling assembly 240 arranged on the first support assembly 210;
The winding component 240 comprises a winding roller 242 and a pull rope 243, one end of the pull rope 243 is connected with a positioning component 370, the other end of the pull rope 243 is wound on the winding roller 242, the winding roller 242 is used for winding and unwinding the pull rope 243 so as to drive the positioning component 370 to rotate relative to the pressure-bearing cover 310, thereby clamping or loosening a part to be tested of a cable;
The insulation resistance monitoring mechanism 300 comprises a pressure-bearing cover 310 movably arranged in the chuck 250, a positioning component 370 arranged on the pressure-bearing cover 310, and an electrode 320 arranged on the inner side of the pressure-bearing cover 310, wherein the electrode 320 is connected with a lead 340, the lead 340 is used for being connected with a rocking meter, one side of the positioning component 370 and one side of the pressure-bearing cover 310 are respectively provided with a soft rubber cushion 390, the positioning component 370 can rotate relative to the pressure-bearing cover 310 so as to clamp a cable part to be tested, the two soft rubber cushions 390 are used for sealing and clamping the cable part to be tested, the two soft rubber cushions 390 are integrally in a horn-shaped structure after being buckled, and the soft rubber cushion 390 is made of rubber materials;
The insulation resistance monitoring mechanism 300 further comprises two groups of limiting clamps 350 fixedly mounted on the pressure-bearing cover 310, an adapter 330 mounted on the electrode 320 pole, one end of a wire 340 is connected with the adapter 330, two deflection-preventing baffles 380 are arranged on the outer side of the pressure-bearing cover 310, and a stay rope 243 is arranged between the two deflection-preventing baffles 380;
The protection assembly 400 comprises a first corrugated pipe 410 and a second corrugated pipe 420, wherein the first corrugated pipe 410 and the second corrugated pipe 420 are used for wrapping a part to be tested of the cable, the first corrugated pipe 410 is connected to the pressure-bearing cover 310, and the second corrugated pipe 420 is connected to the positioning assembly 370;
The protection assembly 400 further comprises a first ring buckle 430 and a second ring buckle 440, wherein the outer ends of the first corrugated pipe 410 and the second corrugated pipe 420 are respectively provided with a T-shaped ring buckle, and the two T-shaped ring buckles are respectively and adaptively clamped in the first ring buckle 430 and the second ring buckle 440.
Because different transformer models, power etc. are great, be different from putting ground and setting up indoor transformer, set up through the strut and expose in moist environment and high temperature environment after for a long time at outdoor transformer, the cable of transformer body and transmission current just can continuously heat up, especially in high temperature environment, the cable insulating layer is by moist air current and the impurity adhesion that flies away under the state of heating up, the cable insulating layer just can accelerate ageing, along with the acceleration of cable ageing, the electric current of high pressure can lead to the cable insulating layer to be broken down, to this, current probe monitoring insulation resistance's equipment can cause certain damage to the cable, simultaneously, need two people hand and continuous operation to end, the long-time hand lifting operation of workman can lead to the painful scheduling problem of arm.
According to the invention, the traditional probe is arranged as the insulation resistance monitoring mechanism 300 locked to the outside of the cable, the part to be tested of the cable can be in a non-interference sealed monitoring environment through the protection assembly 400, at this time, each part of the cable can be subjected to selective insulation resistance test, and the monitoring accuracy is improved; through setting up linkage accuse apart from mechanism 200, can realize the flexible of length, can realize the operation that opens and shuts of locating component 370 and pressure-bearing cover 310 through rolling subassembly 240 moreover to the hasp is outside to the cable when the test of being convenient for, and then improves the stability when the test, need not the manual work and hold insulating grab handle 110 for a long time moreover, can effectively reduce intensity of labour and improve the security of work.
When the selective monitoring needs to be performed on each part of the cable, a worker needs to control two groups of monitoring devices to lock onto the cable, wherein two ends of the first corrugated tube 410 and the second corrugated tube 420 need to be connected with the pressure-bearing covers 310 and the positioning assemblies 370 of the two groups of monitoring devices respectively, and the worker can control the distance between the two insulating handles 110 to adjust the lengths of the first corrugated tube 410 and the second corrugated tube 420, so that the lengths of the parts to be tested of the cable can be controlled;
After the monitoring is finished, the worker only needs to control the rocker 244 to rotate clockwise until the winding roller 242 continuously winds and tightens the stay rope 243, and finally the stay rope 243 can pull the positioning component 370 to turn upwards, and the second corrugated pipe 420 is also unfolded along with the fixed cover 371, so that the positioning component 370 can be quickly separated from the cable.
In some embodiments, the first support assembly 210 includes a first stay tube 211, a first bearing 212 installed in an inner cavity of the first stay tube 211, and a first beam shaft 213 installed inside the first bearing 212; a first cylindrical end is arranged at the top end of the first beam shaft 213, and a first jack is arranged in the first beam shaft 213; the second support assembly 220 includes a second stay tube 221 movably installed inside the first stay tube 211, and a second beam shaft 222 disposed in an inner cavity of the second stay tube 221 and inserted into the first beam shaft 213; the top of the second beam shaft 222 is provided with a second cylindrical end, a second jack is formed in the second beam shaft 222, and the lower end of the second beam shaft 222 penetrates through the first jack to the inside of the first beam shaft 213 in an adapting manner; the third support assembly 230 includes a third stay tube 231 movably installed inside the second stay tube 221, a second bearing 232 installed inside the third stay tube 231, and a third beam shaft 233 installed inside the second bearing 232; the lower end of the third beam shaft 233 is adapted to penetrate into the second beam shaft 222 through the second insertion hole, and the top end of the third beam shaft 233 is provided with the third insertion hole.
The linkage distance control mechanism 200 further comprises a rotation assisting shaft 270 arranged in the chuck 250, wherein the rotation assisting shaft 270 comprises a deflection gear, a guide rod and a cross-shaped end rod, the guide rod is rotationally connected in the chuck, the deflection gear is connected to the upper end of the guide rod, the cross-shaped end rod is arranged at the lower end of the guide rod, and the cross-shaped end rod is inserted in the third jack; the insulation resistance monitoring mechanism 300 further includes a driven gear 360 mounted on the bottom shaft of the pressure housing 310, the driven gear 360 being meshed with the deflection gear.
The insulating handle 110 is internally provided with a motor 120 and a storage battery 130, the storage battery 130 is connected with the motor 120, the motor 120 is connected with a first beam shaft 213, the motor 120 is used for driving the first beam shaft 213 to rotate, and then driving a second beam shaft 222 and a third beam shaft 233 to rotate, so that the pressure-bearing cover 310 is driven to rotate relative to the clamping head 250 through a deflection gear and a driven gear 360.
In the use process, by stretching the third supporting component 230 outwards from the second supporting component 220 and stretching the second supporting component 220 outwards from the first supporting component 210, the second supporting component 220 and the third supporting component 230 which are in the stretching state can be adapted according to transformers which are overhead at different heights outdoors, when the pressure-bearing cover 310 and the positioning component 370 are locked outside the cable, the motor 120 can be started according to the state of the cable on the transformer, three beam shafts which are actively driven can be driven along with the high-speed rotation of the transmission shaft in the motor 120, finally the auxiliary rotating shaft 270 can be driven, under the transmission effect of the deflection gear and the driven gear, the whole insulation resistance monitoring mechanism 300 on the cable locked on the lock catch can perform pitching action relative to the chuck 250, and when the motor 120 is stopped, the driven gear 360 can be locked by the deflection gear so as to avoid the problem of random rotation.
In some embodiments, the coordinated distance control mechanism 200 further comprises three anti-slip buckles 260 and a rotation assisting shaft 270 arranged inside the chuck 250, wherein the rotation assisting shaft 270 comprises a deflection gear, a guide rod and a cross-shaped end rod, the guide rod is rotatably connected in the chuck, the deflection gear is connected to the upper end of the guide rod, the cross-shaped end rod is arranged at the lower end of the guide rod, and the cross-shaped end rod is inserted in the third insertion hole;
the antiskid buckle 260 is made of polyethylene, and the inside of the antiskid buckle 260 is provided with two lead holes, wherein one of the two lead holes is used for a guy cable to pass through, and the other one of the two lead holes is used for a lead wire to pass through;
Three anti-slip buckles 260 are used for restraining the release path of the wire 340, and the wire 340 is inserted into the gaps inside the insertion block 170 and the guide wheel 180, and the insertion block 170 which is stretched outwards under elastic pressure compresses the straightened wire 340;
The auxiliary shaft 270 is composed of a deflection gear, a guide rod, and a cross-shaped end rod.
By respectively and fixedly mounting the three anti-slip buckles 260 on the tops of the first supporting tube 211, the second supporting tube 221 and the third supporting tube 231, at this time, the three anti-slip buckles 260 can provide anti-deflection protection for the wire 340 in a vertical distribution state, after the bottom end of the wire 340 is inserted along the gap between the inserting block 170 and the guiding wheel 180, after the bottom end of the wire 340 is connected with the megger, the wire 340 in a tightening state can be quickly pressed by the inserting block 170, and at this time, the device in a hanging state can avoid the problem that the wire 340 is loose and shakes.
In some embodiments, the positioning assembly 370 further includes a fixed cover 371, one end of the fixed cover 371 is hinged to one end of the pressure-bearing cover 310, the other end of the fixed cover 371 is clamped to the other end of the pressure-bearing cover 310, two jacks are arranged at the clamping end of the fixed cover 371, two pressure springs 372 are arranged in the two jacks, one ends, away from each other, of the two pressure springs 372 are respectively provided with a sliding bead 373, clamping holes are formed in the clamping end of the fixed cover 371, and the sliding beads 373 are clamped in the clamping holes under the action of elastic force of the pressure springs; the outside of the fixed cover 371 is provided with a holder, and the top end of the pull rope 243 is connected to the holder.
When the cable is used, a worker needs to hold the insulating handle 110 and throw the pressure-bearing cover 310 and the fixed cover 371 towards the cable, then loose the inhaul cable 243, the fixed cover 371 which is stressed towards the cable can be quickly locked on the outside of the cable, two sliding beads 373 which are extruded outwards by two pressure springs 372 can be quickly clamped in grooves on the inner side of the pressure-bearing cover 310, at the moment, the electrode 320 can be pressed and pressed on the insulating layer of the cable, the two soft rubber pads 390 which are arranged on the outer sides of the pressure-bearing cover 310 and the fixed cover 371 can seal and wrap the cable, and the first corrugated pipe 410 and the second corrugated pipe 420 which are symmetrically distributed and stretched to the selected length can seal and wrap the cable to-be-tested part, so that accurate non-interference insulation resistance monitoring of the wrapped part of the cable is effectively ensured.
The working principle and the using flow of the invention are as follows: according to the geographical environment of different regions, erect the transformer in the open air and expose outside mostly, because the transformer receives factors such as rainwater, temperature and sand wind in the open air for a long time to interfere, accompanied by the high-load voltage of transformer output, the cable insulating layer that just is used for the transmission current of connection on the transformer just takes place to take place to age because of the intensification easily, and then can be broken down by the electric current, and outdoor transformer often installs on specific strut.
Therefore, when monitoring insulation resistance of an outdoor overhead transformer, a worker needs to loosen the bolts 245, then control the rocker 244 to rotate clockwise until the winding roller 242 rotates clockwise and continuously winds the stay rope 243, meanwhile, the fixed cover 371 can be stretched outwards by the tightened stay rope 243, at the moment, the fixed cover 371 can be turned upwards along the top end of the pressure-bearing cover 310, at the moment, the first corrugated pipe 410 and the second corrugated pipe 420 which are respectively arranged on the outer sides of the pressure-bearing cover 310 and the fixed cover 371 can be turned upwards, at the same time, the other set of devices are adjusted according to the mode, and at the moment, the first ring buckle 430 and the second ring buckle 440 which are arranged on the other pressure-bearing cover 310 and the fixed cover 371 can be turned open.
Then, the worker needs to clamp the first ring buckle 430 and the second ring buckle 440 on the ends of the outer ends of the first corrugated pipe 410 and the second corrugated pipe 420 respectively, then needs to hold the two groups of devices respectively and deliver the two groups of insulation resistance monitoring mechanisms 300 to the position to be tested by the overhead transformer until the two pressure-bearing covers 310 are respectively attached to one side of the cable, and then, according to the distance between the cables to be tested, the two groups of devices need to be held by the two workers to stretch outwards along the cable until the first corrugated pipe 410 and the second corrugated pipe 420 are uniformly expanded, then, the worker needs to loosen the inhaul cable 243 and control the two groups of devices to throw along the outer part 371 of the cable, at this time, the fixed cover is stressed to be turned downwards rapidly until the outer end of the fixed cover 371 is clamped in the pressure-bearing cover 310, at this time, the first corrugated pipe 410 and the second corrugated pipe 420 are also respectively arranged on the outer part of the cable along with the wrapping of the cable 310 until the two electrodes 320 on the inner sides of the two pressure-bearing covers are pressed on the outer part of the cable, and at the same time, the two groups of soft rubber pads 390 serve as the two groups of covers 310, the outer ends of the fixed cover 371 are used as the two pressure-bearing covers, the outer ends of the fixed cover are thrown 371 along the outer part of the cable, and the cable is protected, and the external safety factor can be protected.
The above steps are implemented under the condition that the outdoor overhead transformer is powered off, after the above steps are completed, the bottom lines of the two wires 340 can be inserted along the gap between the guide wheel 180 and the insert block 170, the wires 340 are straightened, the straightened wires 340 can be locked and fixed by the insert block 170, and then the connector lug at the bottom ends of the two wires 340 are connected with the two poles of the rocking meter.
The open circuit check should be performed on the rocker before measurement. The L end and the E end of the rocking meter shake the rocking meter when no load exists, and the pointer of the rocking meter points to the maximum value; when the L end and the E end of the rocking meter are in short circuit, the pointer of the rocking meter is required to point to 0, so that the function of the rocking meter is good, and the rocking meter can be used at the moment;
During measurement, the speed of shaking the crank handle should be uniform at 120 rpm, and after maintaining a steady rotational speed for 1 minute, a reading is taken to avoid the influence of the current absorbed, during which time the worker may not touch both wires 340 and any connected lines.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The transformer fault monitoring device provided by the invention is described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the invention. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (10)
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| CN202411500854.6A CN119024231B (en) | 2024-10-25 | 2024-10-25 | Transformer fault monitoring device |
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| CN119024231B CN119024231B (en) | 2025-01-24 |
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| CN117394057A (en) * | 2023-10-30 | 2024-01-12 | 南通晓星变压器有限公司 | Direct-current resistance measuring device of ultrahigh-voltage transformer |
| CN220438398U (en) * | 2023-07-11 | 2024-02-02 | 重庆建峰新材料有限责任公司 | Insulation resistance detection device |
| CN220820115U (en) * | 2023-09-12 | 2024-04-19 | 国能(肇庆)热电有限公司 | Insulation detection tool |
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| US4988975A (en) * | 1987-12-14 | 1991-01-29 | Nap Kimbel A | Dip stick resistive liquid level detector with adjustable stop |
| CN102128958A (en) * | 2010-12-02 | 2011-07-20 | 河南省电力公司商丘供电公司 | Insulating support for supporting high-pressure testing leads and use method thereof |
| WO2013163458A2 (en) * | 2012-04-25 | 2013-10-31 | Innovative System Solutions, Inc | Apparatus, system and method for tensioning an emergency brake system |
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| CN119024231B (en) | 2025-01-24 |
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