CN114047418B - External application voltage withstand test equipment for power transformer - Google Patents
External application voltage withstand test equipment for power transformer Download PDFInfo
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- CN114047418B CN114047418B CN202210024276.8A CN202210024276A CN114047418B CN 114047418 B CN114047418 B CN 114047418B CN 202210024276 A CN202210024276 A CN 202210024276A CN 114047418 B CN114047418 B CN 114047418B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
Abstract
The invention discloses external application voltage withstand test equipment of a power transformer, which comprises a substrate and a support frame fixedly connected with the upper surface of the substrate, wherein one side of the support frame is connected with a voltage adjusting mechanism used for input voltage change, the other side of the support frame is connected with an acquisition mechanism used for corresponding to different input voltages, the voltage adjusting mechanism comprises a second mounting disc, the second mounting disc is fixedly connected onto the side wall of the support frame, the back of the support frame is connected with a driving mechanism used for enabling a second mounting shaft to rotate intermittently, and a transmission mechanism is connected between the driving mechanism and the acquisition mechanism. According to the invention, the size of the current entering can be changed through the length change of the resistance ring, so that the voltage regulation can be realized, and meanwhile, the first rotating rod can be further contacted with a single acquisition block under the action of the transmission mechanism, so that the corresponding data acquisition under different voltage values can be completed, and the experimental efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of power transformers, in particular to external voltage withstand test equipment of a power transformer.
Background
The transformer is a device for changing alternating voltage by using the principle of electromagnetic induction, is an extremely important device in power construction, is extremely widely applied in current production and life, and needs to carry out a voltage withstand test on the transformer due to the important position.
Disclosure of Invention
The invention aims to provide external withstand voltage test equipment for a power transformer, which can change the magnitude of the entering current through the length change of a resistance ring, realize the voltage regulation, and can further contact a first rotating rod with a single acquisition block under the action of a transmission mechanism to finish the corresponding data acquisition under different voltage values, thereby greatly improving the experimental efficiency and solving the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an external withstand voltage test device of a power transformer comprises a substrate and a support frame fixedly connected with the upper surface of the substrate, wherein one side of the support frame is connected with a voltage adjusting mechanism used for input voltage change, and the other side of the support frame is connected with an acquisition mechanism used for corresponding to different input voltages;
the voltage adjusting mechanism comprises a second mounting disc, the second mounting disc is fixedly connected to the side wall of the support frame, a resistance ring is fixedly connected to the second mounting disc, a second mounting shaft is rotatably mounted on the side wall of the support frame, a second rotating rod is fixedly connected to the outer wall of the second mounting shaft, an electric block matched with the resistance ring is fixed to one end, close to the resistance ring, of the second rotating rod, a driving mechanism for enabling the second mounting shaft to rotate intermittently is connected to the back of the support frame, and a transmission mechanism is connected between the driving mechanism and the collecting mechanism;
the supporting frame side wall under the voltage adjusting mechanism is connected with an input column for leading external voltage into a transformer through a guide mechanism, and the supporting frame side wall under the supporting frame collecting mechanism is connected with a grounding column for leading electricity into the ground through an installation mechanism.
Preferably, actuating mechanism includes the motor, motor fixed mounting is at the back of support frame, the output shaft fixed mounting of motor has incomplete gear, the one end that the second installation axle is close to the resistance ring passes the support frame lateral wall and the rotation tooth that the incomplete gear of fixedly connected with engaged with.
Preferably, the collection mechanism comprises a first mounting disc and collection blocks in an annular array on the surface of the first mounting disc, the first mounting disc is fixedly mounted on the side wall of the support frame, and a first mounting shaft is fixedly mounted in the middle of the first mounting disc.
Preferably, the transmission mechanism comprises a rotating shaft, a first reversing gear and a third bevel gear, the third bevel gear is fixedly mounted at one end, far away from the resistance ring, of the second mounting shaft, the rotating shaft is rotatably mounted on the side wall of the support frame, two opposite first bevel gears are fixed on the outer wall of the rotating shaft, the two first bevel gears are respectively in meshing transmission with the third bevel gear, one end, far away from the first bevel gear, of the rotating shaft is fixedly connected with a second reversing gear, the first reversing gear is rotatably mounted on the outer wall of the first mounting shaft and in meshing transmission with the second reversing gear, the rear side of the first reversing gear is connected with a first rotating rod through a one-way bearing, the first rotating rod can be in contact with each acquisition block, and the first reversing gear is connected with a shifting mechanism for disengagement of the input column.
Preferably, the guide mechanism comprises a shifting lever and a V-shaped rod, the V-shaped rod is rotatably installed on the side wall of the support frame through a fixed shaft, the bottom end of the V-shaped rod is fixedly connected with the input column, the shifting lever is rotatably installed on the outer wall of the fixed shaft at the front side of the V-shaped rod, and protrusions are respectively fixed at two ends of the V-shaped rod.
Preferably, toggle mechanism includes first articulated rod, first articulated rod passes through the damping cover and rotates and install on the outer wall of first installation axle, first switching-over tooth front side fixedly connected with second articulated rod, fixedly connected with can stir first articulated rod when first switching-over tooth counter-clockwise turning on the second articulated rod and take place the pivoted lug, be connected with the connecting rod between first articulated rod and the driving lever.
Preferably, installation mechanism includes the mount, mount fixed mounting is on the lateral wall of support frame, the mount is close to the lower fixed surface of front side and is connected with the mounting bracket, through-hole slidable mounting is passed through at the top of mounting bracket has the extension rod, the extension rod bottom is fixed with ground connection post top, extension rod outer wall between ground connection post and the mounting bracket is connected with the second spring, be connected with the stay cord between the top of extension rod and the connecting rod.
Preferably, still be connected with the warning trigger mechanism that is used for breaking away from the transformer according to the electrified information guide input post on transformer surface on the mount, warning trigger mechanism includes first magnetic path and diaphragm, diaphragm fixed connection is at the upper surface of mount, detect the trigger post through-hole fixedly connected with on the diaphragm, detect and trigger the top of the post fixedly connected with second magnetic path, first magnetic path slidable mounting is on the diaphragm, be connected with first spring between diaphragm and the second magnetic path, be connected with the connecting rod between resistance ring and the V word pole.
Preferably, mounting bracket lateral wall fixedly connected with is used for aerifing the piston mechanism to the ground connection post, piston mechanism includes the piston sleeve, the inside slidable mounting of piston sleeve has the piston rod, the lateral wall fixedly connected with that the mounting bracket is close to the bottom is used for driving the cylinder of piston rod motion, the diaphragm upper surface mounting of first magnetic path one side has the contact switch who triggers the warning when being used for the motion of first magnetic path.
Preferably, a middle sleeve is connected to the outer wall of the rotating shaft between the two first bevel gears through splines, connecting keys are fixedly connected between two ends of the middle sleeve and the opposite faces of the first bevel gears respectively, an installation frame is rotatably installed on the outer wall of the middle sleeve through a pin shaft, and the bottom of the installation frame is rotatably connected with the V-shaped rod.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the arrangement of the second rotating rod and the resistance ring, when the second mounting shaft drives the second rotating rod to rotate intermittently, the length of the resistance ring which is connected each time can be changed, the size of the current which enters can be changed through the length change of the resistance ring, and the voltage can be adjusted.
2. According to the transformer, due to the arrangement of the detection trigger column, when the grounding column is loosened accidentally, the second magnetic block on the detection trigger column is electrified, magnetism can be further generated between the second magnetic block and the first magnetic block, the first magnetic block moves towards one end close to the second magnetic block and compresses the first spring, on one hand, due to the tensile force of the connecting rod, deflection of the V-shaped rod can be achieved, on the other hand, the input column is separated from the transformer body quickly, and subsequent adverse effects are avoided.
3. According to the invention, through the arrangement of the convex block on the second hinge rod, along with the continuous experiment, when the first reversing gear rotates anticlockwise and the convex block is contacted with the first hinge rod, at the moment, the experiment collection is completed, when the convex block continues to move, the first hinge rod can be driven to deflect, due to the connection effect of the connecting rods, the shifting rod can be further driven to toggle, and when the shifting rod deflects, the shifting rod can be matched with the bulge arranged on the V-shaped rod and can drive the V-shaped rod to deflect.
4. According to the invention, through the contact switch, when the first magnetic block moves, the contact switch can be extruded, and through the extrusion effect of the contact switch, the singlechip controls the driving cylinder, the cylinder drives the piston rod to move upwards in the piston sleeve, so that the gas in the piston sleeve can be flushed into the grounding column to expand, and the connection degree of the grounding column and the transformer winding leading-out end can be strengthened, thereby further improving the experimental efficiency.
Drawings
FIG. 1 is a schematic front perspective view of the present invention;
FIG. 2 is a schematic rear perspective view of the present invention;
FIG. 3 is a schematic front view of the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 5 is an enlarged view of the structure at B in FIG. 1 according to the present invention;
FIG. 6 is an enlarged view of the structure of FIG. 1 at C according to the present invention.
In the figure: 1. a first bevel gear; 2. a rotating shaft; 3. a support frame; 4. a connecting bond; 5. a middle sleeve; 6. installing a frame; 7. detecting a trigger post; 8. a substrate; 9. a fixed mount; 10. a first hinge lever; 11. a bump; 12. a second hinge lever; 13. a first mounting shaft; 14. a first commutation tooth; 15. a first rotating lever; 16. collecting blocks; 17. a first mounting plate; 18. a second commutation tooth; 20. an input column; 21. a second mounting shaft; 22. a second rotating rod; 23. a resistance ring; 24. a second mounting plate; 25. a third bevel gear; 26. a protrusion; 27. a deflector rod; 28. a connecting rod; 29. a V-shaped rod; 31. a connecting rod; 32. a first magnetic block; 34. a transverse plate; 35. a second magnetic block; 36. a first spring; 37. a cylinder; 38. an extension rod; 39. a second spring; 40. a mounting frame; 41. a ground post; 42. pulling a rope; 43. a piston sleeve; 44. a piston rod; 45. rotating the teeth; 46. a motor; 47. incomplete gear.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, the present invention provides a technical solution: an external withstand voltage test device of a power transformer comprises a substrate 8 and a support frame 3 fixedly connected with the upper surface of the substrate 8, wherein one side of the support frame 3 is connected with a voltage adjusting mechanism for input voltage change, and the other side of the support frame 3 is connected with an acquisition mechanism for corresponding different input voltages;
the voltage adjusting mechanism comprises a second mounting disc 24, the second mounting disc 24 is fixedly connected to the side wall of the support frame 3, a resistance ring 23 is fixedly connected to the second mounting disc 24, a second mounting shaft 21 is rotatably mounted on the side wall of the support frame 3, a second rotating rod 22 is fixedly connected to the outer wall of the second mounting shaft 21, an electric block matched with the resistance ring 23 is fixed to one end, close to the resistance ring 23, of the second rotating rod 22, a driving mechanism for enabling the second mounting shaft 21 to rotate intermittently is connected to the back of the support frame 3, and a transmission mechanism is connected between the driving mechanism and the collecting mechanism;
the side wall of the support frame 3 right below the voltage regulating mechanism is connected with an input column 20 for leading external voltage into a transformer through a guide mechanism, and the side wall of the support frame 3 right below the collection mechanism of the support frame 3 is connected with a grounding column 41 for leading electricity into the ground through an installation mechanism.
Through the setting of second bull stick 22 and resistance ring 23, when second installation axle 21 drives second bull stick 22 intermittent type and rotates, can realize that the resistance ring 23 length of access at every turn changes, length variation through resistance ring 23, can change the electric current size that gets into, can realize the regulation of voltage, cooperation drive mechanism's effect simultaneously, can further first bull stick 15 and single collection piece 16 contact, can accomplish the data acquisition that corresponds under the different voltage value, thereby very big improvement experimental efficiency.
Further, the driving mechanism comprises a motor 46, the motor 46 is fixedly installed on the back of the support frame 3, an incomplete gear 47 is fixedly installed on an output shaft of the motor 46, and one end of the second installation shaft 21, which is close to the resistance ring 23, penetrates through the side wall of the support frame 3 and is fixedly connected with a rotating tooth 45 engaged with the incomplete gear 47.
The driving motor 46 works, and due to the meshing action of the incomplete gear 47 and the rotating teeth 45, the rotating teeth 45 can be driven to rotate intermittently, so that the second mounting shaft 21 is driven to rotate.
Further, gather the mechanism and include first mounting disc 17 and the collection piece 16 of first mounting disc 17 surperficial annular array, first mounting disc 17 fixed mounting has first installation axle 13 on the lateral wall of support frame 3, the middle part fixed mounting of first mounting disc 17.
The second reversing tooth 18 can be further driven to rotate by the rotation of the rotating shaft 2, and the first rotating rod 15 can further contact with the single acquisition block 16 due to the meshing transmission of the second reversing tooth 18 and the first reversing tooth 14.
Further, the transmission mechanism comprises a rotating shaft 2, a first reversing gear 14 and a third bevel gear 25, the third bevel gear 25 is fixedly installed at one end, far away from the resistance ring 23, of the second installation shaft 21, the rotating shaft 2 is rotatably installed on the side wall of the support frame 3, two opposite first bevel gears 1 are fixed on the outer wall of the rotating shaft 2, the two first bevel gears 1 are respectively in meshing transmission with the third bevel gear 25, one end, far away from the first bevel gear 1, of the rotating shaft 2 is fixedly connected with a second reversing gear 18, the first reversing gear 14 is rotatably installed on the outer wall of the first installation shaft 13 and in meshing transmission with the second reversing gear 18, the rear side of the first reversing gear 14 is connected with a first rotating rod 15 through a one-way bearing, the first rotating rod 15 can be in contact with each collection block 16, and the first reversing gear 14 is connected with a shifting mechanism for disengagement of the input column 20.
At the moment, the middle sleeve 5 is inserted into the connecting key 4 close to one side of the support frame 3, and the third bevel gear 25 and the first bevel gear 1 are meshed to realize that the first bevel gear 1 close to one side of the support frame 3 drives the rotating shaft 2 to rotate, so that the second reversing gear 18 can be further driven to rotate through the rotation of the rotating shaft 2.
Further, the guiding mechanism comprises a shift lever 27 and a V-shaped rod 29, the V-shaped rod 29 is rotatably mounted on the side wall of the support frame 3 through a fixed shaft, the bottom end of the V-shaped rod 29 is fixedly connected with the input column 20, the shift lever 27 is rotatably mounted on the outer wall of the fixed shaft at the front side of the V-shaped rod 29, and two ends of the V-shaped rod 29 are respectively fixed with a protrusion 26.
When the shift lever 27 deflects, the V-shaped rod 29 is driven to deflect by the protrusion 26 disposed on the V-shaped rod 29, so that the input column 20 is quickly separated from the transformer.
Further, the toggle mechanism comprises a first hinge rod 10, the first hinge rod 10 is rotatably mounted on the outer wall of the first mounting shaft 13 through a damping sleeve, a second hinge rod 12 is fixedly connected to the front side of the first reversing gear 14, a protruding block 11 which can toggle the first hinge rod 10 to rotate when the first reversing gear 14 rotates anticlockwise is fixedly connected to the second hinge rod 12, and a connecting rod 28 is connected between the first hinge rod 10 and the shift lever 27.
Because the setting of lug 11 on the second articulated rod 12, along with the continuous going on of experiment, when first switching-over tooth 14 anticlockwise rotation and make lug 11 and first articulated rod 10 contact, at this moment, the experiment is gathered and is accomplished, continues to move as lug 11, can drive first articulated rod 10 and take place to deflect, because the linkage effect of connecting rod 28, can further drive stirring of driving lever 27.
Further, installation mechanism includes mount 9, and mount 9 fixed mounting is on the lateral wall of support frame 3, and mount 9 is close to the lower fixed surface of front side and is connected with mounting bracket 40, and through-hole slidable mounting has extension rod 38 at mounting bracket 40's top, and extension rod 38 bottom is fixed with ground connection post 41 top, and extension rod 38 outer wall between ground connection post 41 and the mounting bracket 40 is connected with second spring 39, is connected with stay cord 42 between the top of extension rod 38 and connecting rod 28.
Due to the connection effect of the pull rope 42, when the first hinge rod 10 deflects, the pull rope 42 can further pull the grounding column 41 to move upwards, and the grounding column 41 is separated from the transformer, so that the automatic power-off process can be realized, and the safety performance of the experiment is further improved.
Further, the fixing frame 9 is further connected with an alarm triggering mechanism used for guiding the input column 20 to be separated from the transformer according to charged information on the surface of the transformer, the alarm triggering mechanism comprises a first magnetic block 32 and a transverse plate 34, the transverse plate 34 is fixedly connected to the upper surface of the fixing frame 9, the transverse plate 34 is fixedly connected with a detection triggering column 7 through a through hole, the top of the detection triggering column 7 is fixedly connected with a second magnetic block 35, the first magnetic block 32 is slidably mounted on the transverse plate 34, a first spring 36 is connected between the transverse plate 34 and the second magnetic block 35, and a connecting rod 31 is connected between the resistance ring 23 and the V-shaped rod 29.
In the test process, through the detection trigger post 7 that sets up, when the ground post 41 takes place unexpected not hard up, detect this moment and trigger second magnetic path 35 on the post 7 and circular telegram, can further make and produce magnetism between second magnetic path 35 and the first magnetic path 32, first magnetic path 32 moves and compresses first spring 36 to the one end that is close to second magnetic path 35 this moment, on the one hand, because the pulling force effect of connecting rod 31, can realize that V word pole 29 takes place to deflect, on the one hand, make input post 20 break away from the transformer body fast, avoid causing follow-up harmful effects.
Further, a piston mechanism used for inflating the grounding pole 41 is fixedly connected to the side wall of the mounting frame 40, the piston mechanism comprises a piston sleeve 43, a piston rod 44 is slidably mounted inside the piston sleeve 43, a cylinder 37 used for driving the piston rod 44 to move is fixedly connected to the side wall of the mounting frame 40 close to the bottom, and a contact switch used for triggering an alarm when the first magnetic block 32 moves is mounted on the upper surface of the transverse plate 34 on one side of the first magnetic block 32.
Through the contact switch who sets up, when first magnetic path 32 moves, can realize the extrusion to contact switch, through contact switch's squeezing action, this moment, single chip microcomputer control drives actuating cylinder 37, actuating cylinder 37 drives piston rod 44 at the inside upward movement of piston cover 43, can be inside with the inside gas rush-in ground post 41 of piston cover 43, make it take place the inflation, thereby can consolidate the connection degree that ground post 41 and transformer winding drawn forth the end, thereby further efficiency and the quality that have improved the experiment are when consolidating the completion back, under the spring action of first spring 36, can realize the reseing of first magnetic path 32, thereby make V word pole 29 reset.
Furthermore, the outer wall of the rotating shaft 2 between the two first bevel gears 1 is connected with a middle sleeve 5 through splines, connecting keys 4 are respectively and fixedly connected between two ends of the middle sleeve 5 and the opposite surfaces of the first bevel gears 1, the outer wall of the middle sleeve 5 is rotatably provided with a mounting frame 6 through a pin shaft, and the bottom of the mounting frame 6 is rotatably connected with the V-shaped rod 29.
When middle cover 5 pegs graft with the connector key 4 that is close to support frame 3 one side, third bevel gear 25 and first bevel gear 1's meshing effect this moment can realize being close to the first bevel gear 1 of support frame 3 one side and drive pivot 2 and rotate, can further drive second switching-over tooth 18 through the rotation of pivot 2 and rotate, when middle cover 5 pegs graft with the connector key 4 of keeping away from support frame 3 one side for keep away from first bevel gear 1 of support frame 3 one side and drive pivot 2 antiport.
The working principle is as follows: when the external application voltage withstand test equipment of the power transformer is used, a transformer to be tested is placed on the upper surface of the base plate 8, the driving motor 46 works, the rotating teeth 45 can be driven to rotate intermittently due to the meshing action of the incomplete gear 47 and the rotating teeth 45, so that the second mounting shaft 21 is driven to rotate, when an experiment starts, the driving motor 46 drives the second mounting shaft 21 to rotate, as shown in fig. 1, the second hinge rod 12 is positioned on the right side of the first hinge rod 10, the voltage regulating mechanism and the collecting mechanism are both in an initial state, and meanwhile, the input column 20 and the bottom end of the grounding column 41 are respectively contacted with a winding leading-out end of the transformer, so that the connection work before the test can be completed;
the motor 46 is driven again to work, and through the intermittent rotation of the rotating teeth 45, on one hand, due to the arrangement effect of the second rotating rod 22 and the resistance ring 23, when the second mounting shaft 21 drives the second rotating rod 22 to rotate intermittently, the length of the resistance ring 23 connected each time can be changed, and through the length change of the resistance ring 23, the size of the current entering can be changed, and the voltage can be adjusted, as shown in fig. 1, at this time, the middle sleeve 5 is inserted into the connecting key 4 close to one side of the support frame 3, at this time, the meshing effect of the third bevel gear 25 and the first bevel gear 1 can realize that the first bevel gear 1 close to one side of the support frame 3 drives the rotating shaft 2 to rotate, the second reversing teeth 18 can be further driven to rotate through the rotation of the rotating shaft 2, and due to the meshing transmission of the second reversing teeth 18 and the first reversing teeth 14, the first rotating rod 15 can be further contacted with a single collecting block 16, corresponding data acquisition under different voltage values can be completed;
due to the arrangement of the convex block 11 on the second hinged rod 12, along with the continuous progress of experiments, when the first reversing tooth 14 rotates anticlockwise and the convex block 11 is in contact with the first hinged rod 10, at this time, the experiment collection is completed, when the convex block 11 continues to move, the first hinged rod 10 can be driven to deflect, due to the connection effect of the connecting rod 28, the shifting rod 27 can be further driven to shift, when the shifting rod 27 deflects, the shifting rod 27 can be matched with the bulge 26 arranged on the V-shaped rod 29 to drive the V-shaped rod 29 to deflect, on one hand, the input column 20 can be quickly separated from the transformer, and meanwhile, due to the connection effect of the pull rope 42, when the first hinged rod 10 deflects, the pull rope 42 can further pull the grounding column 41 to move upwards, and the grounding column 41 can be separated from the transformer, so that the automatic power-off process can be realized;
in the test process, through the arranged detection trigger post 7, when the grounding post 41 is accidentally loosened, the second magnetic block 35 on the detection trigger post 7 is electrified, so that magnetism can be further generated between the second magnetic block 35 and the first magnetic block 32, and the first magnetic block 32 moves towards one end close to the second magnetic block 35 and compresses the first spring 36;
meanwhile, through the contact switch that is arranged, when the first magnetic block 32 moves, the extrusion of the contact switch can be realized, the extrusion effect through the contact switch, at the moment, the single chip microcomputer controls the driving cylinder 37, the cylinder 37 drives the piston rod 44 to move upwards in the piston sleeve 43, the gas in the piston sleeve 43 can be flushed into the grounding column 41, so that the grounding column is expanded, the connection degree of the grounding column 41 and the transformer winding leading-out end can be strengthened, the experiment efficiency and quality are further improved, after the strengthening is completed, the resetting of the first magnetic block 32 can be realized under the elastic force effect of the first spring 36, and the V-shaped rod 29 is reset.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a withstand voltage test equipment is executed outward to power transformer, include base plate (8) and support frame (3) that fixed surface connected on base plate (8), its characterized in that: one side of the support frame (3) is connected with a voltage adjusting mechanism for input voltage change, and the other side of the support frame (3) is connected with an acquisition mechanism for corresponding different input voltages;
the voltage adjusting mechanism comprises a second mounting disc (24), the second mounting disc (24) is fixedly connected to the side wall of the support frame (3), a resistance ring (23) is fixedly connected to the second mounting disc (24), a second mounting shaft (21) is rotatably mounted on the side wall of the support frame (3), a second rotating rod (22) is fixedly connected to the outer wall of the second mounting shaft (21), an electric block matched with the resistance ring (23) is fixed to one end, close to the resistance ring (23), of the second rotating rod (22), a driving mechanism for enabling the second mounting shaft (21) to rotate intermittently is connected to the back of the support frame (3), and a transmission mechanism is connected between the driving mechanism and the collecting mechanism;
the side wall of the support frame (3) right below the voltage adjusting mechanism is connected with an input column (20) for leading external voltage into a transformer through a guide mechanism, and the side wall of the support frame (3) right below the collection mechanism of the support frame (3) is connected with a grounding column (41) for leading electricity into the ground through an installation mechanism;
the guide mechanism comprises a shifting lever (27) and a V-shaped rod (29), the V-shaped rod (29) is rotatably installed on the side wall of the support frame (3) through a fixed shaft, the bottom end of the V-shaped rod (29) is fixedly connected with the input column (20), the shifting lever (27) is rotatably installed on the outer wall of the fixed shaft at the front side of the V-shaped rod (29), and protrusions (26) are respectively fixed at two ends of the V-shaped rod (29).
2. The externally applied withstand voltage test equipment of the power transformer according to claim 1, characterized in that: the drive mechanism includes motor (46), motor (46) fixed mounting is at the back of support frame (3), the output shaft fixed mounting of motor (46) has incomplete gear (47), support frame (3) lateral wall and fixedly connected with and incomplete gear (47) engaged with rotation tooth (45) are passed to the one end that second installation axle (21) are close to resistance ring (23).
3. The externally applied withstand voltage test equipment of the power transformer according to claim 1, characterized in that: gather the mechanism include first mounting disc (17) and first mounting disc (17) surface annular array's collection piece (16), first mounting disc (17) fixed mounting is on the lateral wall of support frame (3), the middle part fixed mounting of first mounting disc (17) has first installation axle (13).
4. The externally applied withstand voltage test equipment of the power transformer according to claim 1, characterized in that: the transmission mechanism comprises a rotating shaft (2), first reversing teeth (14) and third bevel gears (25), the third bevel gears (25) are fixedly installed at one ends, far away from the resistance ring (23), of the second installation shafts (21), the rotating shaft (2) is rotatably installed on the side walls of the support frame (3), two opposite first bevel gears (1) are fixed on the outer walls of the rotating shaft (2), the two first bevel gears (1) are respectively in meshing transmission with the third bevel gears (25), one ends, far away from the first bevel gears (1), of the rotating shaft (2) are fixedly connected with second reversing teeth (18), the first reversing teeth (14) are rotatably installed on the outer walls of the first installation shafts (13) and are in meshing transmission with the second reversing teeth (18), the rear sides of the first reversing teeth (14) are connected with first rotating rods (15) through one-way bearings, and the first rotating rods (15) can be in contact with each collection block (16), and the first reversing gear (14) is connected with a toggle mechanism for disengaging the input column (20).
5. The externally applied withstand voltage test equipment of the power transformer according to claim 4, characterized in that: toggle mechanism includes first articulated rod (10), install on the outer wall of first installation axle (13) through the damping cover rotation first articulated rod (10), first switching-over tooth (14) front side fixedly connected with second articulated rod (12), fixedly connected with can stir first articulated rod (10) when first switching-over tooth (14) anticlockwise rotation and take place pivoted lug (11) on second articulated rod (12), be connected with connecting rod (28) between first articulated rod (10) and driving lever (27).
6. The externally applied withstand voltage test equipment of the power transformer according to claim 1, characterized in that: installation mechanism includes mount (9), mount (9) fixed mounting is on the lateral wall of support frame (3), mount (9) are close to the lower fixed surface of front side and are connected with mounting bracket (40), through-hole slidable mounting has extension rod (38) at the top of mounting bracket (40), extension rod (38) bottom is fixed with ground connection post (41) top, extension rod (38) outer wall connection between ground connection post (41) and mounting bracket (40) has second spring (39), be connected with stay cord (42) between the top of extension rod (38) and connecting rod (28).
7. The externally applied withstand voltage test equipment of the power transformer according to claim 6, characterized in that: still be connected with the warning trigger mechanism that is used for breaking away from the transformer according to electrified information guide input post (20) on transformer surface on mount (9), warning trigger mechanism includes first magnetic path (32) and diaphragm (34), diaphragm (34) fixed connection is at the upper surface of mount (9), detect trigger post (7) through-hole fixedly connected with on diaphragm (34), detect trigger post (7) top fixedly connected with second magnetic path (35), first magnetic path (32) slidable mounting is on diaphragm (34), be connected with first spring (36) between diaphragm (34) and second magnetic path (35), be connected with connecting rod (31) between resistance ring (23) and V word pole (29).
8. The externally applied withstand voltage test equipment of the power transformer according to claim 7, characterized in that: mounting bracket (40) lateral wall fixedly connected with is used for aerifing piston mechanism to earthing pole (41), piston mechanism includes piston sleeve (43), the inside slidable mounting of piston sleeve (43) has piston rod (44), mounting bracket (40) are close to lateral wall fixedly connected with of bottom and are used for driving cylinder (37) of piston rod (44) motion, diaphragm (34) surface mounting on one side of first magnetic path (32) has the contact switch who triggers the warning when being used for first magnetic path (32) motion.
9. The externally applied withstand voltage test equipment of the power transformer according to claim 4, characterized in that: two cover (5) in the middle of pivot (2) outer wall splined connection between first bevel gear (1), fixedly connected with connecting key (4) respectively between the opposite face of the both ends of cover (5) in the middle and first bevel gear (1), the outer wall of cover (5) in the middle is installed installing frame (6) through round pin axle rotation, the bottom and the V word pole (29) of installing frame (6) rotate and are connected.
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| CN202210024276.8A CN114047418B (en) | 2022-01-11 | 2022-01-11 | External application voltage withstand test equipment for power transformer |
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| CN202210024276.8A CN114047418B (en) | 2022-01-11 | 2022-01-11 | External application voltage withstand test equipment for power transformer |
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| CN114047418B true CN114047418B (en) | 2022-03-18 |
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| CN116736056B (en) * | 2023-06-29 | 2024-03-05 | 济南荣耀合创电力科技有限公司 | External voltage withstand test device for power transformer |
| CN116626456B (en) * | 2023-07-24 | 2023-09-29 | 国网天津市电力公司高压分公司 | External voltage withstand test equipment for power transformer |
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