CN117538575A - Automatic electric connection complete device for voltage transformer test - Google Patents
Automatic electric connection complete device for voltage transformer test Download PDFInfo
- Publication number
- CN117538575A CN117538575A CN202311528576.0A CN202311528576A CN117538575A CN 117538575 A CN117538575 A CN 117538575A CN 202311528576 A CN202311528576 A CN 202311528576A CN 117538575 A CN117538575 A CN 117538575A
- Authority
- CN
- China
- Prior art keywords
- automatic
- crimping
- voltage
- electric
- groups
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 116
- 238000002788 crimping Methods 0.000 claims abstract description 152
- 238000009413 insulation Methods 0.000 claims abstract description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 95
- 229910052802 copper Inorganic materials 0.000 claims description 95
- 239000010949 copper Substances 0.000 claims description 95
- 230000007246 mechanism Effects 0.000 claims description 52
- 239000012212 insulator Substances 0.000 claims description 41
- 210000000078 claw Anatomy 0.000 claims description 29
- 230000006698 induction Effects 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 description 13
- 238000007906 compression Methods 0.000 description 13
- 238000001514 detection method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses an automatic electric connection complete device for a voltage transformer test, which comprises an automatic electric connection device for a transformer error test, an automatic electric connection device for a transformer insulation resistance test and an automatic electric connection device for a transformer withstand voltage/partial discharge test; the automatic electric connection device for the error test of the mutual inductor comprises: the automatic crimping device of the primary terminal of the transformer and the automatic crimping device of the secondary terminal of the transformer are used for automatically and electrically connecting the primary terminal of the transformer to be tested with an electric device, and the automatic crimping device of the secondary terminal is used for automatically and electrically connecting the secondary terminal of the transformer to be tested with the electric device. The automatic electric connection device for the error test of the mutual inductor is a standardized automatic device for the mutual inductor test, can be applied to the related test of 2 groups of mutual inductors, can realize the insulation resistance test and the voltage withstand test of a plurality of groups of mutual inductors through combination and electric serial-parallel connection, and greatly enhances the universality of the automatic electric connection device.
Description
Technical Field
The invention discloses an automatic electric connection complete device for a voltage transformer test, and relates to the field of automatic detection of power transformer products.
Background
At present, the product detection assembly line of the power transformer manufacturing enterprise is in a human work mode, the labor cost is high, the labor intensity is high, the efficiency is low, and the personal safety risk is high, so that unmanned automation of the product detection assembly line is very necessary. And the automation of the electrical connection of the transformer electrical test is an indispensable technical means of an automatic assembly line. At present, although the automatic crimping device is similar to an automatic crimping device, the automatic crimping device is only suitable for detecting a non-standardized transformer, has a complex structure, can only realize the wiring of a single transformer at a time, is generally only suitable for single-phase error test of the transformer, has large limitation, is not suitable for a series of automatic crimping devices related to safety preventive tests such as partial discharge, power frequency withstand voltage, induction withstand voltage and insulation resistance test of the transformer, and is not suitable for related equipment for factory inspection scenes of fixed products of transformer manufacturing enterprises. An automatic crimping device suitable for detecting a plurality of standard transformers in a fixed mode is needed, and is very necessary for transformer manufacturing enterprises.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: in the detection process of products of power transformer manufacturing enterprises, the similar device in the prior art is generally suitable for detecting non-standardized transformers, only a single transformer can be electrically connected at a time, and the device is only suitable for single-phase error test of the transformers, and has the advantages of large limitation and low transformer detection efficiency.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: an automatic electric connection complete device for voltage transformer test comprises at least one group of automatic electric connection complete device for transformer error test; the automatic electric connection complete set device for the error test of the mutual inductor comprises a primary terminal automatic crimping device and a secondary terminal automatic crimping device; the primary terminal automatic crimping device is used for automatically and electrically connecting a primary terminal of the transformer to be tested with the electric device, and the secondary terminal automatic crimping device is used for automatically and electrically connecting a secondary terminal of the transformer to be tested with the electric device; the crimping head of the secondary terminal automatic crimping device is a key type electric claw; the automatic crimping device of the primary terminal comprises a first crimping cylinder, the lower side of the first crimping cylinder is connected with the upper side of a horizontal movement positioning mechanism, the lower side of the horizontal movement positioning mechanism is connected with two groups of primary end electric connection components, each group of electric connection components comprises 2 crimping heads, and the two groups of electric connection components form a 2 х 2 contact electric contact mechanism for 2 automatic electric connection of voltage transformer tests.
The automatic electric connection complete device for the voltage transformer test comprises a support frame, wherein the bottom of the support frame is connected with two parallel guide rail mounting plates, the guide rail mounting plates are connected with guide rails, and the guide rails are connected with two sliding plates through sliding blocks; each sliding plate is connected with a primary end electric connection assembly downwards and driven by an electric cylinder to perform opposite or opposite movement; the front end and the rear end of the support frame are respectively connected with an electric cylinder mounting plate and an electric cylinder, and an electric cylinder push rod connecting piece is of an L-shaped structure and is respectively connected with an electric cylinder push rod and a sliding plate; the end part of each sliding plate close to one side of the sensor is provided with a magnetic induction sheet, the magnetic induction sheet is matched with the magnetic induction sensor to output an electric cylinder braking signal to the PLC, and the magnetic induction sensors are arranged at the left side and the right side of the supporting frame; the primary end electric connection assembly is divided into two groups, the first insulator of each group of primary end electric connection assembly is vertically arranged, the upper end of the first insulator is connected to the sliding plate through the first shaft seat, the lower end of the first insulator is connected to the crimping plate, the shaft holes at two ends of the crimping plate are connected with the guide seats, the crimping copper column penetrates through the holes in the middle of the guide seats, the spring is sleeved in the middle of the crimping copper column from the lower direction, and the spring is screwed into the outer threads at the lower end of the crimping copper column through the threads of the crimping copper column.
The automatic electric connection complete equipment of the voltage transformer test, the automatic crimping device of the secondary terminal includes: the mounting bracket, the second compression joint cylinder and the secondary end electric connection assembly; the mounting bracket is connected with a second compression joint cylinder which is connected with the secondary end electric connection assembly; the secondary end electric connection assembly structure comprises an insulating mounting plate, wherein two groups of 4 groups of electric claws are symmetrically connected below the insulating mounting plate, and grounding rods are symmetrically arranged in the middle of the insulating mounting plate; each group of 4 groups of electric claws can simultaneously carry out crimping on one double-secondary winding type mutual inductor terminal, and two groups of 4 groups of electric claws can realize crimping on 2 double-secondary winding type mutual inductor terminals; each group of 4 groups of electric claws comprises an insulating bottom plate, two ends of the insulating bottom plate are connected with an insulating mounting plate through T-shaped connecting frames, connecting shafts are arranged between the T-shaped connecting frames, 4 second insulating sleeves are sleeved on the shafts, each second insulating sleeve is sleeved with a key-type copper bar, second insulating sleeves are arranged between each key-type copper bar and the T-shaped connecting frame and between every two adjacent key-type copper bars, and the key-type copper bars are connected with the insulating mounting plate through second springs; the grounding rod comprises a third spring, the third spring is sleeved into the grounding copper rod, and the upper end of the grounding copper rod is connected to the insulating mounting plate.
The automatic electric connection complete device for the voltage transformer test comprises two groups of automatic electric connection devices for the transformer error test, and forms a complete device for the insulation resistance test automatic electric connection of 4 groups of potential transformers: the two groups of mutual inductor error test automatic electric connection devices are connected in series through wires between the parity joint plates of the automatic primary terminal crimping device and then connected in parallel with equipotential to form electric short circuit, and are connected with the high-voltage end of the insulation resistance tester through wires; the 4 groups of electric claws of the automatic crimping device of the secondary terminal of the automatic connecting device for error testing of the two groups of mutual inductors are connected with the input end of a control switch of the testing loop through wires, and the output end of the control switch of the testing loop is connected with the low-voltage end of the insulation resistance tester.
The foregoing automatic electric connection complete equipment of voltage transformer test, its characterized in that still includes: the high-voltage switching device is a set of device for automatically and electrically connecting voltage withstand/partial discharge tests of 4 groups of (4) transformers, which is formed by two groups of automatic electric connecting devices for error tests of transformers:
equipotential is formed by connecting the parity crimping plates of the primary terminal automatic crimping device of the two groups of mutual inductor error testing automatic electrical connection devices in series through wires; the two groups are connected in series to form two different equipotential ends, the device is respectively connected with corresponding switching copper bars of an automatic crimping mechanism of an A electrode electric contact and an automatic crimping mechanism of a B electrode electric contact of the high-voltage switching device through wires; the 4 groups of electric claws of the automatic crimping device of the secondary terminal of the automatic connecting device for error testing of the two groups of mutual inductors are connected with the input end of the control switch of the testing loop through wires.
The automatic electric connection complete equipment of the voltage transformer test, the high-voltage switching device comprises: the automatic crimping mechanism of the A-pole electrical contact and the automatic crimping mechanism of the B-pole electrical contact are respectively connected with a primary end electric connection component crimping plate of the primary terminal automatic crimping device through wires; the automatic crimping mechanism of the A pole electrical contact, the automatic crimping mechanism of the B pole electrical contact, the high-voltage electrode busbar assembly, the A pole floor assembly and the B pole floor assembly are all connected with the mounting frame; the automatic crimping mechanism of the A-pole electrical contact and the automatic crimping mechanism of the B-pole electrical contact comprise a third crimping cylinder, the upper end of the third crimping cylinder is connected to the upper end and the lower end of the mounting frame through a mounting support piece of the third crimping cylinder, and the upper end and the lower end of the third crimping cylinder are sequentially connected with a second shaft seat and a second insulator through an adapter plate; the high-voltage copper column is sleeved in an inner hole above the switching copper bar, a protruding step is arranged on the high-voltage copper column to enable the high-voltage copper column to be placed above the switching copper bar, a fourth spring is sleeved in the high-voltage copper column, the fourth spring and the copper column are sleeved in a hole at the lower end of the second insulator, a copper column nut is screwed in an external thread at the upper part of the high-voltage copper column, the switching copper bar is fixed with the second insulator, and the fourth spring is compressed into an elastic shape inside the second insulator; the A pole floor assembly and the B pole floor assembly comprise third insulators, the third insulators are connected to the mounting frame through the adapter plate, the lower ends of the third insulators are connected with the grounding copper bars, the grounding copper bars are connected with the grounding copper columns, and fifth springs are arranged between the grounding copper bars and the grounding copper columns; the high-voltage electrode busbar assembly comprises three fourth insulators and high-voltage busbars, wherein the upper end of each fourth insulator is connected with a mounting frame, and the lower end of each fourth insulator is connected with the high-voltage busbar.
The invention has the beneficial effects that: the automatic electric connection complete device for the voltage transformer test provided by the invention has the advantage that the automatic electric connection of 2 transformers can be realized simultaneously through the 4-contact electric contact mechanism.
The invention can be applied to error test, voltage current characteristics and inter-turn insulation test of 2 groups of transformers, and insulation resistance test and voltage withstand test of a plurality of groups of transformers (multiple of 2) can be realized through combination and electric serial/parallel connection, thereby greatly improving automatic detection efficiency, simplifying automatic equipment of transformer test and enhancing universality of an automatic electric connection device.
The key-type electric claw of the automatic crimping device for the secondary terminal solves the unsafe discharge phenomenon caused by the too small electric gap between the upper part of the electric pole type crimping head of the high-voltage test and the primary high-voltage terminal: finger type press connection is realized through the key type copper bar, so that the distance between a contact and a high-voltage terminal is reduced, namely, the test electric gap is improved, and the ignition phenomenon of a high-voltage test is avoided; in addition, the key type electric claw pressing mode can enable the electric contact to be more flexible and reliable, and the service life of equipment is prolonged.
The high-voltage switching device provided by the invention is matched with the voltage-resistant/partial discharge test automatic electric connection device, so that the power frequency voltage-resistant, induction voltage-resistant and partial discharge test of the transformer are synchronously completed, and the automatic detection assembly line function of the transformer is enhanced.
Drawings
FIG. 1 is a schematic diagram of an automatic electrical connection kit for error testing of a transformer in accordance with the present invention;
FIG. 2 is a schematic view of a primary terminal automatic crimping device;
FIG. 3 is an exploded view of a horizontal movement positioning mechanism of the automatic crimping device of the primary terminal;
FIG. 4 is an exploded view of the primary electrical connection assembly of the primary terminal automatic crimping device;
FIG. 5 is a schematic view of an automatic crimping device for a secondary terminal;
FIG. 6 is an exploded view of a secondary end electrical connection assembly of the automatic crimping device for secondary terminals;
FIG. 7 is a schematic diagram of an insulation resistance test automatic electrical connection kit;
FIG. 8 is a schematic diagram of an automatic electrical connection kit for transformer withstand voltage/partial discharge testing;
fig. 9 is a schematic diagram of a transformer withstand voltage/partial discharge test automatic electrical connection kit-high voltage switching device.
Description of the embodiments
The implementation of the technical solution is described in further detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Examples
An embodiment as provided in fig. 1: the embodiment provides an automatic electric connection complete device for voltage transformer test, which comprises: at least one automatic electrical connection device for error testing of a transformer, the automatic electrical connection device for error testing of a transformer comprising: when the embodiment is implemented, the primary terminal automatic crimping device 1 and the secondary terminal automatic crimping device 2 can be fixed above the corresponding workbench 3, the secondary automatic crimping device 2 is fixed on the side of the corresponding workbench 3, the workbench 3 is provided with a fixed working position for placing the transformer 4 to be tested, and the workbench 3 is not limited to the roller conveying mechanism in fig. 1.
As shown in fig. 2: the primary terminal automatic crimping device 1 includes: the device comprises a first compression joint cylinder 11, a horizontal movement positioning mechanism 12 and a primary end electric connection assembly 13, wherein the lower side of the first compression joint cylinder 11 is connected with the upper side of the horizontal movement positioning mechanism 12, the lower side of the horizontal movement positioning mechanism 12 is connected with the primary end electric connection assembly 13, and the primary end electric connection assembly is driven by an electric cylinder to perform opposite or opposite movement; the primary end electric connection assembly 13 is a 2 х 2 contact electric contact mechanism, and the 4-point electric contact mechanism can be used for simultaneously crimping 2 transformers to be tested.
As shown in fig. 3: the horizontal movement positioning mechanism 12 includes: the support 121, the guide rail 122, the slide plate 123, the guide rail mounting plate 124, the slide block 125, the electric cylinder mounting plate 126, the electric cylinder 127 push rod connecting piece 128 and the magnetic induction sensor 129; the bottom of the supporting frame 121 is connected with two parallel guide rail mounting plates 124, the guide rail mounting plates 124 are connected with guide rails 122, the guide rails 122 are connected with two sliding plates 123 through sliding blocks 125, and each sliding plate 123 is connected with one primary end electric connection assembly 13; the front end and the rear end of the supporting frame 121 are respectively connected with an electric cylinder mounting plate 126, each electric cylinder mounting plate 126 is connected with an electric cylinder 127, and a push rod connecting piece 128 of the electric cylinder mounting plate is L-shaped and is respectively connected with a push rod of the electric cylinder 127 and a sliding plate 123;
the magnetic induction sensor 129 is arranged on the supporting frame 121 and is positioned according to the model number of the tested transformer; the sensor sensing piece is installed at the position, close to the sensor 129, of the sliding plate 123, close to the supporting frame 121, and when the sensing piece moves to the position of the magnetic induction sensor, the PLC controller receives corresponding signals and then brakes the electric cylinder, and the first compression joint air cylinder 11 is started to start to be pressed down.
As shown in fig. 4: the primary side electrical connection assemblies 13 each include: first shaft seat 131, first insulator 132, crimping copper post 133, crimping plate 134, guide holder 135 and first spring 137 and threaded crimping head 136: the two first insulators 132 are vertically arranged, the upper ends of the two first insulators are connected with the first shaft seat 131, the lower ends of the two first insulators are connected with the crimping plates 134, the crimping plates 134 are arranged in parallel, the shaft holes at the two ends of the crimping plates 134 are connected with the guide bases 135, the crimping copper columns 133 pass through the holes in the middle of the guide bases 135, the springs are sleeved in the lower directions of the crimping copper columns 133, and the lower external threads of the crimping copper columns 133 are screwed in through the internal threads of the crimping heads 136.
As shown in fig. 5: the automatic crimping device 2 for a secondary terminal includes: the mounting bracket 21, the second compression joint cylinder 22 and the secondary end electric connection assembly 23; the mounting bracket 21 is connected with a second compression joint cylinder 22, and the second compression joint cylinder 22 is connected with a secondary end electric connection assembly 23.
As shown in fig. 6: the secondary side electrical connection assembly 23 includes: an insulating mounting plate 231, two sets of 4 sets of electric pawls 232, and a ground rod 233; two groups of 4 groups of electric claws 232 are symmetrically connected below the insulating mounting plate 231, and grounding rods 233 are symmetrically arranged between the two groups of 4 groups of electric claws 232;
the 4 groups of electric claws 232 can simultaneously carry out crimping (2 terminals of each winding and 4 crimping heads 136) on the terminals of one double-secondary winding type mutual inductor 4, and two groups of 4 groups of electric claws realize crimping (2 х heads) on the terminals of 2 double-secondary winding type mutual inductors 4; the 4-set electrical jaw 232 includes: the device comprises a T-shaped connecting frame 2321, a shaft 2322, a second spring 2323, a key-type copper bar 2324, a first insulating sleeve 2325, a second insulating sleeve 2326 and an insulating bottom plate 2327; the two ends of the insulation base plate 2327 are connected to the installation insulation pressing plate 231 through a T-shaped connecting frame 2321, a shaft 2322 is connected between the T-shaped connecting frames 2321, 4 first insulation sleeves 2325 are sleeved on the shaft 2322, each first insulation sleeve 2325 is sleeved with a key type copper bar 2324, a second insulation sleeve 2326 is arranged between each key type copper bar 2324 and the T-shaped connecting frame 2321 and between adjacent finger type wiring bars 2324, and each key type copper bar 2324 is connected with the insulation mounting plate 231 through a second spring 2323;
the ground rod 233 includes: a third spring 2331, a grounded copper rod 2332; the third spring 2331 is sleeved into the grounding copper rod 2332 and connects the upper end of the grounding copper rod 2332 to the insulating mounting plate 231.
Error testing electrical connection procedure based on the embodiment of fig. 1: a set of mutual-inductor error test automatic electric connection complete sets carries out error test to 2 mutual-inductors simultaneously: the automatic crimping device 1 of the primary terminal of the complete device drives the primary end electric connection component 13 to be crimped with the corresponding primary terminals of the two transformers through the first crimping cylinder 11, the primary end electric connection component crimping plate 134 is connected with an error testing power supply loop through a wire, and therefore automatic electric connection of the primary loop is completed; the secondary automatic crimping device 2 of the complete device drives the secondary end electric connection assembly 23 to be crimped with the secondary terminals of the corresponding two transformers through the second crimping cylinder 22, and the electric claw 232 is connected with the error tester through a wire, so that the automatic electric connection of a secondary test loop is completed, and the error synchronous test of 2 transformers is realized.
As shown in fig. 7, two groups of automatic electrical connection devices for error testing of the mutual inductor form an automatic electrical connection complete device for insulation resistance testing of the mutual inductor; the two groups of mutual inductor error test automatic electric connection devices are connected in series with the corresponding crimping plates of the automatic crimping device of the primary terminal through wires, and then are connected in parallel with equipotential to form an electric short circuit, and are connected with the high-voltage end of the insulation resistance tester through wires; the electric claws of the automatic secondary terminal crimping device 2 of the two groups of mutual inductor error test automatic electric connecting devices are connected with the input end of a test loop control switch through connecting wires, and the output end of the test loop control switch is connected with the low-voltage end of the insulation resistance tester. The complete device can simultaneously realize the insulation resistance test electrical connection of 4 mutual inductors, improve the corresponding test efficiency and eliminate the bottleneck phenomenon of the assembly line.
The insulation resistance test electrical connection process based on fig. 7: the pressure joint 136 of the primary end electric connecting component 13 of the automatic mutual inductor error test connecting device is driven to press down by the first pressure welding cylinder 11 to realize equipotential electric connection with the primary terminals of 4 mutual inductors, and the pressure joint 134 of the primary end electric connecting component 13 is connected with the high-voltage end of the insulation resistance test device by a wire; the secondary automatic crimping device of the two groups of mutual inductor error testing automatic electric connecting devices is grounded copper bars, the secondary automatic crimping device is electrically connected with the secondary terminals of the mutual inductors through the second cylinder 22 pressing down the driving electric claw 232, the electric claw is connected with the input end of the testing loop control switch (short-circuit the secondary terminals of the mutual inductor) through a connecting wire, and the output end of the testing loop control switch is connected with the low-voltage end of the insulation resistance testing device.
Examples
Fig. 8 to fig. 9 are diagrams showing two groups of automatic electrical connection devices for error test of the transformer and automatic electrical connection sets for voltage withstanding/partial discharge test of the transformer formed by the high-voltage switching devices:
equipotential is formed by connecting the parity crimping plates of the primary terminal automatic crimping device 1 of the two groups of mutual inductor error test automatic electrical connection devices in series through wires; the two groups of the automatic crimping mechanisms are connected in series to form two different equipotential ends, and then are respectively connected with the switching copper bars of the automatic crimping mechanism Z1 of the A pole electrical contact and the automatic crimping mechanism Z2 of the B pole electrical contact of the high-voltage switching device Z through wires; the 4 groups of electric claws of the automatic crimping device 2 of the secondary terminal of the automatic connecting device for error testing of the two groups of mutual inductors are connected with the input end of the control switch of the testing loop through connecting wires.
The high voltage switching device Z includes: an automatic crimping mechanism Z1 of the A-pole electrical contact, an automatic crimping mechanism Z2 of the B-pole electrical contact, a high-voltage electrode busbar assembly Z3, an A-pole floor assembly Z4, a B-pole floor assembly Z5 and a mounting rack Z6; the switching copper bars of the automatic crimping mechanism Z1 of the A-pole electrical contact and the automatic crimping mechanism Z2 of the B-pole electrical contact are respectively connected with the crimping plates 134 of the primary crimping assemblies of the two primary terminal automatic crimping devices 13 through wires;
the automatic crimping mechanism Z1 of the A-pole electrical contact, the automatic crimping mechanism Z2 of the B-pole electrical contact, the high-voltage electrode busbar assembly Z3, the A-pole floor assembly Z4 and the B-pole floor assembly Z5 are all connected with the mounting frame Z6;
the automatic crimping mechanism Z1 of the A-pole electrical contact and the automatic crimping mechanism Z2 of the B-pole electrical contact both comprise: the third compression joint cylinder is provided with a supporting piece Z11, a third compression joint cylinder Z12, a cylinder adapter plate Z13, a second shaft seat Z14, a second insulator Z15, a fourth spring Z16, a switching copper bar Z17, a high-voltage copper column Z18 and a copper column nut Z19;
the upper end of a third compression joint cylinder Z12 is connected to the upper end and the lower end of a mounting frame Z6 through a third compression joint cylinder mounting support Z11, the lower end of the third compression joint cylinder Z12 is sequentially connected with a second shaft seat Z14 and a second insulator Z15 through a cylinder adapter plate Z13, a high-voltage copper column Z18 is sleeved in an inner hole above a switching copper bar Z17, a protruding step is arranged on the high-voltage copper column Z18 to enable the copper column to be placed above a switching connection copper bar, a fourth spring Z16 is sleeved in the high-voltage copper column Z18, the fourth spring Z16 and the copper column Z18 are sleeved in a hole at the lower end of the second insulator Z15, a copper column nut Z19 is screwed into an external thread at the upper part of the high-voltage copper column Z18, the switching copper bar Z17 is fixed with the second insulator Z15, and the fourth spring Z16 is compressed into a spring shape inside the second insulator Z15;
the A pole floor assembly Z4 and the B pole floor assembly Z5 each comprise: the third insulator Z41, the adapter plate Z42, the grounding copper bar Z43, the grounding copper column Z44 and the fifth spring Z45;
the third insulator Z41 is connected to the mounting frame Z6 through the adapter plate Z42, the lower side of the third insulator Z41 is connected with the grounding copper bar Z43, the grounding copper bar Z43 is connected with the grounding copper column Z44, and a fifth spring Z45 is arranged between the grounding copper bar Z43 and the grounding copper column Z44;
the high-voltage electrode busbar assembly Z3 comprises: three fourth insulators Z31 and high-voltage busbar Z32, the upper end of each fourth insulator Z31 is connected to the mounting rack Z6, and the lower end of each fourth insulator Z31 is connected with the high-voltage busbar Z32.
Automatic electric connection process based on power frequency voltage withstand/partial discharge test of the transformer shown in fig. 8 and 9:
step 1): the automatic crimping device 1 of the primary terminal of the complete device is fully depressed by the corresponding cylinder to complete the electric connection with the primary ends of the 4 mutual inductors;
step 2): the automatic crimping mechanism Z1 of the A-pole electrical contact and the automatic crimping mechanism Z2 of the B-pole electrical contact of the high-voltage switching device Z of the complete device are simultaneously pressed down through respective cylinders to realize electrical contact with the high-voltage electrode copper bar Z3, and the high-voltage electrode copper bar Z3 is connected with the high-voltage end of the withstand voltage/partial discharge tester through a wire;
step 3): the automatic crimping device 2 of the secondary terminal of the complete device is pressed down through a corresponding air cylinder, an electric claw of a secondary component Z23 is electrically connected with the secondary terminal of the transformer, a grounding copper rod 233 is communicated with a corresponding electrode, the electric claw 232 is connected with a loop controller through a wire, and the electric claw is switched through the controller to enable the secondary terminal of the transformer to be short-circuited and connected with a low-voltage end of the withstand voltage/partial discharge tester.
Automatic electric connection process based on the mutual inductor induction withstand voltage test of fig. 8 and 9:
step 1): the automatic crimping device 1 of the primary terminal of the complete device is fully depressed by the corresponding cylinder to complete the electric connection with the primary ends of the 4 mutual inductors;
step 2): the automatic crimping device 2 of the secondary terminal of the complete device is pressed down by a corresponding cylinder and is electrically connected with the secondary terminal;
step 3): the secondary terminal loop controller switches the secondary b-end of the transformer to be grounded and the a-end of the transformer to be suspended;
step 4): an automatic crimping mechanism Z1 of an A-pole electrical contact of a high-voltage switching device Z of the complete device is pressed down by a corresponding cylinder to enable a switching copper bar to be in electrical contact with a high-voltage electrode busbar Z3 (the busbar is connected with a high-voltage power supply by a wire), and an automatic crimping mechanism Z2 of a B-pole electrical contact is pulled back by the corresponding cylinder to enable the switching copper bar to be in electrical contact with a grounding copper column of a B-pole floor component Z5 (connected with the low end of the high-voltage power supply by the wire);
step 5): the secondary terminal controller switches the secondary a-terminal of the transformer to be grounded and the secondary b-terminal of the transformer to be suspended;
step 6): the automatic crimping mechanism Z2 of the B-pole electrical contact of the high-voltage switching device Z of the complete device is pressed down through a corresponding cylinder to enable the switching copper bar to be in electrical contact with the high-voltage electrode busbar Z3, and the automatic crimping mechanism Z1 of the A-pole electrical contact is pulled back through a corresponding cylinder to be in electrical contact with the grounding copper column of the A-pole floor assembly Z4.
The complete device can simultaneously realize three high-voltage tests of power frequency voltage resistance, partial discharge and induction voltage resistance of 4 transformers, realizes full automation of the high-voltage test, shortens the production line beat, and greatly improves the detection efficiency.
The automatic electric connection device for error test provided by the invention is a standardized automatic device for voltage transformer test, can realize automatic electric connection of 2 transformers simultaneously, can be applied to error test, can be applied to volt-ampere characteristics and inter-turn insulation test of 2 groups of transformers, can realize insulation resistance test and withstand voltage test of a plurality of groups of transformers through combination and electric serial/parallel connection, greatly improves automatic detection efficiency, simplifies automatic equipment for transformer test, and enhances universality of the automatic electric connection device.
The key-type electric claw of the automatic crimping device for the secondary terminal solves the unsafe discharge phenomenon caused by too small electric gap in a high-voltage test, and meanwhile, the electric contact is more flexible and reliable, so that the service life of equipment is prolonged.
The high-voltage switching device provided by the invention is matched with the voltage-resistant/partial discharge test automatic electric connection device, so that the power frequency voltage-resistant, induction voltage-resistant and partial discharge test of the transformer are synchronously completed, and the automatic detection assembly line function of the transformer is enhanced.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (6)
1. Automatic electrical connection complete equipment for voltage transformer test, which is characterized by comprising: at least one group of mutual inductor error testing automatic electric connection complete device; the automatic electric connection complete set device for the error test of the mutual inductor comprises a primary terminal automatic crimping device and a secondary terminal automatic crimping device; the primary terminal automatic crimping device is used for automatically and electrically connecting a primary terminal of the transformer to be tested with the electric device, and the secondary terminal automatic crimping device is used for automatically and electrically connecting a secondary terminal of the transformer to be tested with the electric device; the crimping head of the secondary terminal automatic crimping device is a key type electric claw; the automatic crimping device of the primary terminal comprises a first crimping cylinder, the lower side of the first crimping cylinder is connected with the upper side of the horizontal movement positioning mechanism, the lower side of the horizontal movement positioning mechanism is connected with two groups of primary end electric connection components, each group of electric connection components comprises 2 crimping heads, two groups of electric contact mechanisms with 2 х contacts are formed, and automatic electric connection of the primary terminal of 2 voltage transformers can be realized.
2. The automatic electric connection complete equipment for voltage transformer test according to claim 1, wherein the horizontal movement positioning mechanism comprises a support frame, the bottom of the support frame is connected with two parallel guide rail mounting plates, the guide rail mounting plates are connected with guide rails, two sliding plates are connected between the guide rails through sliding blocks, a primary end electric connection assembly is connected under each sliding plate, and opposite or opposite movement is carried out through electric cylinder driving; the front end and the rear end of the support frame are respectively connected with an electric cylinder mounting plate and an electric cylinder, and an electric cylinder push rod connecting piece is of an L-shaped structure and is respectively connected with an electric cylinder push rod and a sliding plate; the end part of each sliding plate close to one side of the sensor is provided with a magnetic induction sheet, the magnetic induction sheet is matched with the magnetic induction sensor to output an electric cylinder braking signal to the PLC, and the magnetic induction sensors are arranged at the left side and the right side of the supporting frame; the primary end electric connection assembly is divided into two groups, a first insulator of each group of primary end electric connection assembly is vertically arranged, the upper end of the first insulator is connected to the sliding plate through a first shaft seat, the lower end of the first insulator is connected with the crimping plate, the shaft holes at the two ends of the crimping plate are connected with the guide seats, the crimping copper column penetrates through the holes in the middle of the guide seats, the spring is sleeved in the lower direction of the crimping copper column, and the spring is screwed into the outer threads at the lower end of the crimping copper column through the inner seat threads of the crimping head.
3. The automatic electrical connection kit for voltage transformer testing according to claim 1, wherein the automatic secondary terminal crimping device comprises a mounting bracket, a second crimping cylinder is connected to the mounting bracket, and the second crimping cylinder is connected to a secondary terminal electrical connection assembly; the secondary end electric connection assembly structure comprises an insulating mounting plate, wherein two groups of 4 groups of electric claws are symmetrically connected below the insulating mounting plate, and grounding rods are symmetrically arranged in the middle of the insulating mounting plate; each group of 4 groups of electric claws can simultaneously carry out crimping on one double-secondary winding type transformer terminal, and two groups of 4 groups of electric claws can realize automatic electric connection of the secondary terminals of 2 double-secondary winding type voltage transformers; each group of 4 groups of electric claws comprises an insulating bottom plate, two ends of the insulating bottom plate are connected with an insulating mounting plate through T-shaped connecting frames, connecting shafts are arranged between the T-shaped connecting frames, 4 second insulating sleeves are sleeved on the shafts, each second insulating sleeve is sleeved with a key-type copper bar, second insulating sleeves are arranged between each key-type copper bar and the T-shaped connecting frame and between every two adjacent key-type copper bars, and the key-type copper bars are connected with the insulating mounting plate through second springs; the grounding rod comprises a third spring, the third spring is sleeved into the grounding copper rod, and the upper end of the grounding copper rod is connected to the insulating mounting plate.
4. The automatic electrical connection kit for voltage transformer testing according to claim 1, comprising two sets of automatic electrical connection devices for transformer error testing, comprising 4 sets of automatic electrical connection kit for insulation resistance testing of a potential transformer: the two groups of mutual inductor error test automatic electric connection devices are connected in series through wires between the parity joint plates of the automatic primary terminal crimping device and then connected in parallel with equipotential to form electric short circuit, and are connected with the high-voltage end of the insulation resistance tester through wires; the 4 groups of electric claws of the automatic crimping device of the secondary terminal of the automatic connecting device for error testing of the two groups of mutual inductors are connected with the input end of a control switch of the testing loop through wires, and the output end of the control switch of the testing loop is connected with the low-voltage end of the insulation resistance tester.
5. The automatic electrical connection kit for voltage transformer test as recited in claim 4, further comprising a high voltage switching device, wherein the automatic electrical connection kit for voltage withstand/partial discharge test of the 4 groups of potential transformers is composed of two groups of automatic electrical connection devices for transformer error test and the high voltage switching device: equipotential is formed by connecting the parity crimping plates of the primary terminal automatic crimping device of the two groups of mutual inductor error testing automatic electrical connection devices in series through wires; the two groups are connected in series to form two different equipotential ends, the device is respectively connected with corresponding switching copper bars of an automatic crimping mechanism of an A electrode electric contact and an automatic crimping mechanism of a B electrode electric contact of the high-voltage switching device through wires; the 4 groups of electric claws of the automatic crimping device of the secondary terminal of the automatic connecting device for error testing of the two groups of mutual inductors are connected with the input end of the control switch of the testing loop through wires.
6. The automatic electrical connection kit for voltage transformer testing of claim 5, wherein the high voltage switching device comprises an a-pole electrical contact automatic crimping mechanism and a B-pole electrical contact automatic crimping mechanism; the automatic crimping mechanism of the A-pole electrical contact and the automatic crimping mechanism of the B-pole electrical contact are respectively connected with a crimping plate of a primary end electrical connection assembly of the automatic crimping device of the primary terminal through wires, and the crimping mechanism moves reciprocally to enable the switching copper bars to be switched between a high-voltage electrode and a grounding electrode, so that different types of withstand voltage tests of the mutual inductor are realized; the automatic crimping mechanism of the A pole electrical contact, the automatic crimping mechanism of the B pole electrical contact, the high-voltage electrode busbar assembly, the A pole floor assembly and the B pole floor assembly are all connected with the mounting frame; the automatic crimping mechanism of the A-pole electrical contact and the automatic crimping mechanism of the B-pole electrical contact comprise a third crimping cylinder, wherein the upper end of the third crimping cylinder is connected with the mounting frame through a mounting support piece of the third crimping cylinder, and the lower end of the third crimping cylinder is sequentially connected with the second shaft seat and the second insulator through a cylinder adapter plate; the high-voltage copper column is sleeved in an inner hole above the switching copper bar, a protruding step is arranged on the high-voltage copper column to enable the high-voltage copper column to be placed above the switching copper bar, a fourth spring is sleeved in the high-voltage copper column, the fourth spring and the copper column are sleeved in a hole at the lower end of the second insulator, a copper column nut is screwed in an external thread at the upper part of the high-voltage copper column, the switching copper bar is fixed with the second insulator, and the fourth spring is compressed into an elastic shape inside the second insulator; the A pole floor assembly and the B pole floor assembly comprise third insulators, the third insulators are connected to the mounting frame through the adapter plate, the lower ends of the third insulators are connected with the grounding copper bars, the grounding copper bars are connected with the grounding copper columns, and fifth springs are arranged between the grounding copper bars and the grounding copper columns; the high-voltage electrode busbar assembly comprises three fourth insulators and high-voltage busbars, wherein the upper end of each fourth insulator is connected with a mounting frame, and the lower end of each fourth insulator is connected with the high-voltage busbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311528576.0A CN117538575A (en) | 2023-11-16 | 2023-11-16 | Automatic electric connection complete device for voltage transformer test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311528576.0A CN117538575A (en) | 2023-11-16 | 2023-11-16 | Automatic electric connection complete device for voltage transformer test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117538575A true CN117538575A (en) | 2024-02-09 |
Family
ID=89795221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311528576.0A Pending CN117538575A (en) | 2023-11-16 | 2023-11-16 | Automatic electric connection complete device for voltage transformer test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117538575A (en) |
-
2023
- 2023-11-16 CN CN202311528576.0A patent/CN117538575A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2212040C2 (en) | Testing gear of dry load | |
| CN215953834U (en) | Punching current transformer batch detection device | |
| CN112051491A (en) | Full-automatic high-voltage transformer insulation and voltage resistance testing device | |
| CN206788229U (en) | A kind of high-low pressure switch | |
| CN218896185U (en) | Auxiliary device for voltage transformer test | |
| CN117538575A (en) | Automatic electric connection complete device for voltage transformer test | |
| JP3126051B2 (en) | Test equipment that conducts continuity and insulation tests on multiple conductors that are part of wiring | |
| CN104898053A (en) | Integrated device for large-scale low-voltage breaker high-current tests | |
| CN109725240B (en) | General electric strength detection device | |
| CN109342987B (en) | Combined transformer verification device with boosting and boosting sources | |
| CN213338001U (en) | Current table primary wiring mechanism | |
| CN102332366B (en) | Combination device for testing large current aging and vacuum degree of a vacuum arc extinguish chamber | |
| CN201887367U (en) | Handcart of AC high-voltage potential transformer | |
| CN209765018U (en) | generator stator rotor grounding test device | |
| CN210572545U (en) | Epoxy sleeve testing arrangement | |
| CN217181107U (en) | Pressure-resistant test device | |
| CN212410762U (en) | Live voltage-withstanding test bench for direct current contactor | |
| CN216051862U (en) | Movable contact type electrical equipment shaking insulation auxiliary wiring device | |
| CN211063341U (en) | Marine high-power high-voltage alternating-current dry load with excellent insulation property | |
| CN202183320U (en) | Vacuum arc-extinguishing chamber ageing and vacuum degree testing combined device | |
| CN212341362U (en) | Full-automatic high-voltage transformer insulation and voltage resistance testing device | |
| CN219695421U (en) | Multi-station transformer test bench | |
| CN220105271U (en) | CVT test tool | |
| CN209016437U (en) | A kind of 10kV switchgear distribution system | |
| CN212180842U (en) | Testing and connecting device for switching device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |