CN116682656B - Traction transformer for electrified railway and application method thereof - Google Patents
Traction transformer for electrified railway and application method thereof Download PDFInfo
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- CN116682656B CN116682656B CN202310927225.0A CN202310927225A CN116682656B CN 116682656 B CN116682656 B CN 116682656B CN 202310927225 A CN202310927225 A CN 202310927225A CN 116682656 B CN116682656 B CN 116682656B
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000010079 rubber tapping Methods 0.000 claims abstract description 18
- 210000001503 joint Anatomy 0.000 claims description 29
- 238000009434 installation Methods 0.000 claims description 23
- 239000003223 protective agent Substances 0.000 claims description 19
- 239000010720 hydraulic oil Substances 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 11
- 239000003921 oil Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000008021 deposition Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/025—Constructional details of transformers or reactors with tapping on coil or windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
- H01F27/2828—Construction of conductive connections, of leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0016—Contact arrangements for tap changers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0027—Operating mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0044—Casings; Mountings; Disposition in transformer housing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0044—Casings; Mountings; Disposition in transformer housing
- H01H2009/005—Details concerning the sealing of the oil filled casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H2009/0061—Monitoring tap change switching devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a traction transformer for an electrified railway and a use method thereof, and in particular relates to the technical field of traction transformers for electrified railway, which comprises a transformer box, wherein a tapping switch assembly is detachably arranged in the transformer box, the tapping switch assembly comprises a mounting head, a mounting column, a mounting frame, a mounting sleeve and a fixing frame, the mounting frame is positioned at the bottom of the mounting head, the mounting column is fixedly arranged at the bottom of the mounting head, the mounting column penetrates through the inside of the mounting frame, and the mounting sleeve is movably sleeved on the periphery of the mounting column. The traction transformer for the electrified railway can conveniently replace the main contact, ensure the normal work of the main contact, protect the switching contact, prevent the contact from being affected by the film formed by the deposition of the decomposer of insulating oil on the contact, ensure the good contact of the switching contact, ensure the pressure balance of the contact through independent hydraulic drive, ensure the contact of the contact in place and better avoid the poor contact of the contact.
Description
Technical Field
The invention relates to the technical field of traction transformers for electrified railways, in particular to a traction transformer for an electrified railway and a use method thereof.
Background
The tap changer of the traction transformer for the general electrified railway has poor contact, and the cause of the fault is required to be checked in time, and corresponding measures are respectively taken to eliminate the fault, so that the normal operation of the traction transformer is quickly recovered.
The method for eliminating the bad contact fault of the tapping switch of the traction transformer generally comprises the following steps: the contact is seriously damaged, and the contact is required to be detached, replaced by a new contact or prepared according to the original shape; the contact pressure is unbalanced, the contact springs of some tapping switches are adjustable, the contact pressure balance can be kept by properly adjusting the springs, the contact surface roughness is proper, and polishing and grinding are not needed; when the tapping switch is used for a long time, the surface of a contact is often covered with an oxide film and dirt, sometimes a decomposition product of insulating oil is deposited on the contact to form a glossy film, the surface looks clean, and the contact is influenced when the tapping switch is in operation; the traction transformer for the electrified railway in the prior art is complicated and complicated when the main contact is replaced and disassembled, the contact cannot be influenced by protecting the switching contact, the driving pressure during working is not balanced enough, the contact of individual contacts is difficult to be in place, and the problems can cause bad contact of the contacts to influence the normal work.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a traction transformer for an electrified railway and a use method thereof, and solves the problem that the normal work is influenced by poor contact of contacts of the existing traction transformer for the electrified railway.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the traction transformer for the electrified railway comprises a transformer box, wherein a tapping switch assembly is detachably arranged in the transformer box, the tapping switch assembly comprises a mounting head, a mounting column, a mounting rack, a mounting sleeve and a fixing frame, the mounting rack is positioned at the bottom of the mounting head, the mounting column is fixedly arranged at the bottom of the mounting head, the mounting column penetrates through the inside of the mounting rack, the mounting sleeve is movably sleeved on the periphery of the mounting column, and the fixing frame is fixedly arranged on one side of the mounting sleeve;
the top and the bottom of the mounting sleeve are fixedly provided with positioning rings, one side of the positioning ring at the bottom end is fixedly provided with a fixed lantern ring, the inside of the fixed lantern ring is movably penetrated with a supporting sleeve, the periphery of the supporting sleeve is fixedly provided with a threaded sleeve, the top of the threaded sleeve is movably provided with a fixing nut, the inside of the supporting sleeve is provided with a butt joint chamber, the bottom of the supporting sleeve is movably penetrated with a main contact, and the top end of the main contact is fixedly provided with a butt joint stud;
the inside fixed mounting of mount has the hydraulic pressure case, one side activity of hydraulic pressure case runs through there is the switch contact, the top fixed mounting of mount has the guard plate, the bottom fixed mounting of mount has driving motor, the fixed mouth of pipe that connects of one end of hydraulic pressure case, the fixed push post that is equipped with in bottom of hydraulic pressure case, and the bottom activity of push post runs through in the inside of support sleeve, the position that corresponds the switch contact in the hydraulic pressure case has seted up horizontal hydraulic chamber, the position that corresponds the push post in the hydraulic pressure case has seted up vertical hydraulic chamber, the one end of switch contact and the top of push post all overlap and have sealed the pad, the bottom fixed of push post is equipped with the butt joint sleeve, and the butt joint sleeve is located the inside of butt joint chamber, fixedly connected with first reset spring between butt joint sleeve and the butt joint chamber, the periphery fixed connection dish that is equipped with of switch contact, fixed connection No. two reset springs between connection dish and the hydraulic pressure case, the top fixed of guard plate is equipped with spacing post and honeycomb duct, and spacing post are located one side of guard plate, the bottom fixed being equipped with spacing bottom the bottom, one side of guard plate has set of tooth cover, one side of guard plate is equipped with the protection groove, one side of honeycomb duct corresponds to be equipped with vertical hydraulic pressure chamber, the top cover, the fixed gear cover is equipped with the top cover, the top of two sets of drive ram sets of jack-stop caps are set up, the top cover is fixed to the top cover, the top cover is fixed with the top cover of the top cover that sets of drive ram, and the top cover is fixed with top cover, and has the top opening. And the cross bar is located outside the protectant chamber.
Preferably, an iron core winding is fixedly installed in the transformer box, and the tapping switch assembly is installed on one side of the iron core winding.
Preferably, the installation room has been seted up to the inside of mounting bracket, the mount is located the inside of installation room, the inside bottom mounting of installation room is equipped with the cover seat, cup joint the location between the bottom of erection column and the cover seat.
Preferably, the positioning ring is positioned on the mounting column through a screw, and one side of the positioning ring positioned at the top end is fixedly connected with the fixing frame.
Preferably, the main contact is in threaded connection with the butt joint sleeve through the butt joint stud, and the bottom end of the main contact is positioned outside the support sleeve.
Preferably, the thread sleeve is in threaded connection with the fixing nut, and the fixing collar and the supporting sleeve are in limit installation through the thread sleeve and the fixing nut.
Preferably, plunger discs are fixedly arranged at one ends of the push posts and the switching contacts, and the plunger discs are slidably arranged in the corresponding horizontal hydraulic chambers and the corresponding vertical hydraulic chambers.
Preferably, the switching contact and the protection groove are correspondingly arranged, and the protection groove and the flow guide pipe are communicated.
The invention also provides a using method of the traction transformer for the electrified railway, which comprises the following steps:
s1: penetrating a mounting column into the mounting chamber, sleeving the mounting sleeve on the mounting column in the mounting chamber, tightening a screw of a positioning ring to fix the mounting sleeve on the mounting column, enabling the bottom end of the mounting column to enter the interior of a sleeving seat for sleeving and positioning, penetrating a main contact into a supporting sleeve, connecting the main contact with the abutting sleeve through an abutting stud at the top end, screwing a fixing nut to fix the supporting sleeve and a fixing collar, supporting the top end of the supporting sleeve at the bottom of a fixing frame at the moment, installing a tapping switch assembly on one side of an iron core winding in a transformer box, and respectively corresponding a switching contact and a pushing column to a working contact to finish the installation;
s2: the driving motor is externally connected with an independent power supply and a switch, the driving gear is meshed with the toothed plate for transmission, when the switching contact is reset through the connecting disc and the second reset spring, the protection plate is lifted to the limiting seat, the limiting column enters the limiting groove for limiting, the switching contact can be blocked in an auxiliary mode, the guide pipe contacts the cross rod and jacks up the blocking cover, the protective agent in the protective agent chamber flows out from the bottom and passes through a gap between the cross rods to enter the guide pipe, finally flows into the protective groove, the protective agent is added into the protective agent chamber through the opening, and at the moment, the blocking cover seals the bottom outlet of the protective agent chamber under the dead weight to finish the protection of the switching contact;
s3: the working mode is as follows: the horizontal hydraulic chamber and the vertical hydraulic chamber are independently connected with the hydraulic oil pipe through the corresponding connecting pipe openings, hydraulic oil is stored in the mounting head and is conveyed through the oil pump, the hydraulic oil enters the inside of the horizontal hydraulic chamber and the inside of the vertical hydraulic chamber under the same pressure, the switching contact and the connecting disc can be pushed uniformly, the sealing gasket plays a sealing role, the switching contact is directly pushed transversely, and the connecting disc pushes the main contact to move vertically through the butt joint sleeve.
The invention provides a traction transformer for an electrified railway and a use method thereof. Compared with the prior art, the method has the following beneficial effects:
1. the traction transformer for the electrified railway can conveniently replace the main contact, ensure the normal work of the main contact, protect the switching contact, prevent the contact from being affected by the film formed by the deposition of the decomposer of insulating oil on the contact, ensure the good contact of the switching contact, ensure the pressure balance of the contact through independent hydraulic drive, ensure the contact of the contact in place and better avoid the poor contact of the contact.
2. This traction transformer that electrified railway used, through penetrating the erection chamber inside with the erection column, with the erection sleeve cover on the erection column in the inside of erection chamber, screw down the holding ring makes the erection sleeve fix on the erection column, the inside of the bottom entering cover seat of erection column cup joints the location, penetrate the support sleeve inside with the main contact, and connect the butt joint sleeve through the butt joint double-screw bolt on top, after the main contact seriously damages, the main contact change can be directly unscrewed, compare integral type contact, change simply and with low costs, wholly be convenient for split maintenance, convenient operation when overhauling.
3. This traction transformer that electrified railway used, drive the driving gear through driving motor drive, make driving gear and pinion rack meshing transmission, after the switching contact resets through connection pad and No. two reset springs, promote the guard plate to spacing seat department, spacing post gets into the inside of spacing groove and carries out spacingly, can assist and block the switching contact, avoid switching contact abnormal extension and lead to the short circuit, the honeycomb duct contact horizontal pole and jack-up blanking cover this moment, can make the inside protectant of protectant room flow out from the bottom and pass the gap between the horizontal pole and get into inside the honeycomb duct, finally flow to the inside of protection groove, protect corresponding switching contact in the inside of protection groove, effectively delay the oxidation and the ageing of switching contact, reduce the washing number of times.
4. The traction transformer for the electrified railway is characterized in that the transverse hydraulic chamber and the vertical hydraulic chamber are correspondingly connected with the hydraulic oil pipe through the pipe connecting ports, hydraulic oil is stored in the installation head and is conveyed through the oil pump, the hydraulic oil enters the transverse hydraulic chamber and the vertical hydraulic chamber under the same pressure, and the sealing gasket plays a role in sealing, so that the switching contact and the connecting disc can be pushed uniformly.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a tap changer assembly according to the present invention;
FIG. 3 is a schematic view of a mounting sleeve according to the present invention;
FIG. 4 is a schematic view of a fixing frame according to the present invention;
FIG. 5 is a schematic cross-sectional view of a hydraulic tank according to the present invention;
FIG. 6 is a schematic cross-sectional view of a support sleeve according to the present invention;
FIG. 7 is a schematic diagram of a drive gear drive of the present invention;
fig. 8 is a schematic view of the structure of the protection plate of the present invention;
FIG. 9 is a schematic cross-sectional view of a limiting seat according to the present invention;
fig. 10 is a schematic view of the bottom structure of the closure of the present invention.
In the figure: 1. a transformer tank; 11. an iron core winding; 2. a tap changer assembly; 3. a mounting head; 31. an oil pump; 32. a hydraulic oil pipe; 4. a mounting column; 5. a mounting frame; 51. a mounting chamber; 52. a socket is sleeved; 6. a mounting sleeve; 61. a positioning ring; 62. a fixed collar; 621. a support sleeve; 622. a thread sleeve; 623. a fixing nut; 624. a docking chamber; 63. a main contact; 631. butting studs; 7. a fixing frame; 71. a hydraulic tank; 711. a pipe connecting port; 712. pushing a column; 713. a lateral hydraulic chamber; 714. a vertical hydraulic chamber; 715. a sealing gasket; 716. a butt joint sleeve; 717. a first return spring; 72. a switching contact; 721. a connecting disc; 722. a second return spring; 73. a protection plate; 731. a limit column; 732. a limiting bottom plate; 733. a protective groove; 734. a flow guiding pipe; 735. a toothed plate; 74. a driving motor; 741. a drive gear; 75. a limit seat; 751. a limit groove; 752. a protectant chamber; 753. an opening; 754. a blanking cover; 755. a top column; 756. a cross bar; 76. a plunger disc.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-10, the present invention provides a technical solution: the traction transformer for the electrified railway and the application method thereof comprise a transformer box 1, wherein a tapping switch assembly 2 is detachably arranged in the transformer box 1, the tapping switch assembly 2 comprises a mounting head 3, a mounting column 4, a mounting frame 5, a mounting sleeve 6 and a fixing frame 7, the mounting frame 5 is positioned at the bottom of the mounting head 3, the mounting column 4 is fixedly arranged at the bottom of the mounting head 3, the mounting column 4 penetrates through the inside of the mounting frame 5, the mounting sleeve 6 is movably sleeved on the periphery of the mounting column 4, and the fixing frame 7 is fixedly arranged on one side of the mounting sleeve 6;
the top and the bottom of the mounting sleeve 6 are fixedly provided with positioning rings 61, one side of the positioning ring 61 at the bottom end is fixedly provided with a fixed collar 62, the inside of the fixed collar 62 movably penetrates through a supporting sleeve 621, the periphery of the supporting sleeve 621 is fixedly provided with a threaded sleeve 622, the top of the threaded sleeve 622 is movably provided with a fixed nut 623, the inside of the supporting sleeve 621 is provided with a butt joint chamber 624, the bottom of the supporting sleeve 621 movably penetrates through a main contact 63, and the top end of the main contact 63 is fixedly provided with a butt joint stud 631;
the inside fixed mounting of mount 7 has hydraulic tank 71, one side activity of hydraulic tank 71 has run through and has switch contact 72, the fixed mounting in top of mount 7 has guard plate 73, and the fixed mounting in bottom of mount 7 has driving motor 74, the fixed grafting mouth 711 that is equipped with in one end of hydraulic tank 71, the fixed push column 712 that is equipped with in bottom of hydraulic tank 71, and the bottom of push column 712 runs through in the inside of support sleeve 621, the horizontal hydraulic chamber 713 has been seted up to the position of switch contact 72 in the inside of hydraulic tank 71, vertical hydraulic chamber 714 has been seted up to the position of corresponding push column 712 in the inside of hydraulic tank 71, one end and the top of switch contact 72 all overlap and are equipped with sealing washer 715, the fixed butt sleeve 716 that is equipped with in bottom of push column 712, and the butt sleeve 716 is located the inside of butt chamber 624, fixedly connected with No. one reset spring 717 between butt sleeve 716 and the butt chamber 624, the periphery fixed connection dish 721 is equipped with, fixed connection dish 722 between fixed connection No. two reset springs 722 between baffle 71, the top of guard plate 73 is fixedly equipped with spacing post and 734, and spacing post 731 is located in one side of 734, the bottom of guide tube 734, the fixed stop plate is equipped with one side of 734, the bottom of guard plate 732 is fixedly equipped with spacing floor 732, the corresponding to the position of switch contact 73, vertical hydraulic chamber 714 is set of jack-up, one end of face plate 73 is equipped with a sealing plate 752, sealing washer seat is equipped with a sealing plate is equipped with jack 75, the corresponding to the opening 75, the opening 75 of the top of the active protection set of jack 75, and the top 75 is set of protection grooves 75 are set of jack 75, and corresponding to the opening 75 are set of jack 75, and the opening of jack 75 is set of protection grooves are correspondingly arranged in the top of jack 75, and 75 is set of jack-up to the active protection grooves are set of jack grooves are 75, and the opening of jack grooves are 75 are correspondingly arranged, a cross bar 756 is fixedly provided at the outer periphery of the bottom end of the top column 755, and the cross bar 756 is located outside the protectant chamber 752.
The inside fixed mounting of transformer tank 1 has iron core winding 11, tapping switch subassembly 2 installs in one side of iron core winding 11, install the inside of mounting bracket 5 has seted up installation room 51, mount 7 is located the inside of installation room 51, the inside bottom mounting of installation room 51 is equipped with the cover seat 52, cup joint the location between the bottom of erection column 4 and the cover seat 52, the holding ring 61 passes through the screw location on erection column 4, the holding ring 61 one side and the mount 7 fixed connection on top, main contact 63 passes through butt joint double-screw bolt 631 and butt joint sleeve 716 threaded connection, and the bottom of main contact 63 is located the outside of support sleeve 621, threaded connection between thread bush 622 and the fixation nut 623, fixed collar 62 and support sleeve 621 pass through thread bush 622 and fixation nut 623 spacing installation, the plunger disc 76 is all fixed to be equipped with in one end of push post 712 and switching contact 72, and plunger disc 76 slides and locates the inside of corresponding horizontal hydraulic chamber 713 and vertical hydraulic chamber 714, correspond setting between switching contact 72 and the protection groove 733, the intercommunication sets up between protection groove 733 and the honeycomb duct 734.
Referring to fig. 1-10, the invention also provides a method for using the traction transformer for the electrified railway, which specifically comprises the following steps:
s1: penetrating the mounting column 4 into the mounting chamber 51, sleeving the mounting sleeve 6 on the mounting column 4 in the mounting chamber 51, tightening the screw of the positioning ring 61 to fix the mounting sleeve 6 on the mounting column 4, enabling the bottom end of the mounting column 4 to enter the interior of the sleeving seat 52 for sleeving and positioning, penetrating the main contact 63 into the supporting sleeve 621, connecting the butt joint sleeve 716 through the butt joint stud 631 at the top end, screwing the fixing nut 623 to fix the supporting sleeve 621 and the fixing collar 62, supporting the top end of the supporting sleeve 621 at the bottom of the fixing frame 7 at the moment, installing the tapping switch assembly 2 on one side of an iron core winding in the transformer tank 1, and respectively corresponding the switching contact 72 and the pushing post 712 to working contacts to finish installation;
s2: when the switching contact 72 is reset through the connecting disc 721 and the second reset spring 722, the protection plate 73 is lifted to the position of the limiting seat 75, the limiting column 731 enters the inside of the limiting groove 751 to limit, the switching contact 72 can be blocked in an auxiliary mode, the guide pipe 734 contacts the cross rod 756 and jacks the blocking cover 754, the protective agent in the protective agent chamber 752 flows out from the bottom and enters the guide pipe 734 through a gap between the cross rods 756, finally flows into the protective groove 733, the protective agent is added into the protective agent chamber 752 through the opening 753, the blocking cover 754 closes the bottom outlet of the protective agent chamber 752 under the dead weight, and the protection of the switching contact 72 is completed;
s3: the working mode is as follows: the transverse hydraulic chamber 713 and the vertical hydraulic chamber 714 are independently connected with the hydraulic oil pipe 32 through the corresponding connecting pipe mouth 711, hydraulic oil is stored in the mounting head 3 and is conveyed through the oil pump 31, the hydraulic oil enters the transverse hydraulic chamber 713 and the vertical hydraulic chamber 714 under the same pressure, the switching contact 72 and the connecting disc 721 can be pushed uniformly, the sealing gasket 715 plays a sealing role, the switching contact 72 is directly pushed transversely, and the connecting disc 721 pushes the main contact 63 to move vertically through the butt joint sleeve 716.
During installation, the installation column 4 is penetrated into the installation chamber 51, the installation sleeve 6 is sleeved on the installation column 4 in the installation chamber 51, the installation sleeve 6 is fixed on the installation column 4 by screwing the screw of the positioning ring 61, the bottom end of the installation column 4 enters the interior of the sleeve seat 52 to be sleeved and positioned, the main contact 63 is penetrated into the supporting sleeve 621 and is connected with the butt joint sleeve 716 through the butt joint stud 631 at the top end, when the main contact 63 is seriously damaged, the main contact 63 is directly unscrewed to be replaced, compared with the integral contact, the replacement is simple and low in cost, the fixing nut 623 can be screwed to fix the supporting sleeve 621 and the fixing sleeve ring 62, at the moment, the top end of the supporting sleeve 621 is supported at the bottom of the fixing frame 7, the tap switch assembly 2 is installed on one side of the internal iron core winding 11 of the transformer box 1, the switching contact 72 and the pushing post 712 respectively correspond to the working contact, the whole is convenient to disassemble and overhaul, the operation is convenient during maintenance, when in operation, the transverse hydraulic chamber 713 and the vertical hydraulic chamber 714 are independently connected with the hydraulic oil pipe 32 through the corresponding connecting pipe mouth 711, the hydraulic oil is stored in the mounting head 3 and is conveyed through the oil pump 31, the hydraulic oil enters the transverse hydraulic chamber 713 and the vertical hydraulic chamber 714 under the same pressure, the switching contact 72 and the connecting disc 721 can be pushed uniformly, the sealing gasket 715 plays a sealing role, the switching contact 72 is directly and transversely pushed, the connecting disc 721 pushes the main contact 63 to vertically move through the butt joint sleeve 716, the driving motor 74 is externally connected with an independent power supply and a switch, the driving gear 741 can be driven when the switching contact is started, the driving gear 741 is meshed with the toothed plate 735 for transmission, after the switching contact 72 is reset through the connecting disc 721 and the second reset spring 722, the protection plate 73 is lifted to the position limiting seat 75, the limiting post 731 enters the position limiting groove for limiting, the auxiliary blocking switch contact 72 can prevent the switch contact 72 from being abnormally extended to cause short circuit, at the moment, the guide pipe 734 contacts the cross rod 756 and jacks up the blocking cover 754, the protective agent in the protective agent chamber 752 flows out from the bottom and passes through the gap between the cross rods 756 to enter the guide pipe 734, finally flows into the protective slot 733, the corresponding switch contact 72 is protected in the protective slot 733, oxidation and aging of the switch contact 72 are effectively delayed, the cleaning times are reduced, the protective agent is only required to be added into the protective agent chamber 752 through the opening 753 during maintenance, at the moment, the blocking cover 754 closes the bottom outlet of the protective agent chamber 752 under self weight, the main contact 63 can be conveniently replaced as a whole, normal operation of the main contact 63 is ensured, the switch contact 72 can be protected, the contact is ensured to be well, the contact pressure balance is ensured by independent hydraulic drive, the contact in place is ensured, and poor contact is better avoided.
And all that is not described in detail in this specification is well known to those skilled in the art.
Claims (10)
1. Traction transformer for electrified railway, comprising a transformer tank (1), characterized in that: the transformer box is characterized in that a tapping switch assembly (2) is detachably arranged in the transformer box (1), the tapping switch assembly (2) comprises a mounting head (3), a mounting column (4), a mounting frame (5), a mounting sleeve (6) and a fixing frame (7), the mounting frame (5) is positioned at the bottom of the mounting head (3), the mounting column (4) is fixedly arranged at the bottom of the mounting head (3), the mounting column (4) penetrates through the mounting frame (5), the mounting sleeve (6) is movably sleeved on the periphery of the mounting column (4), and the fixing frame (7) is fixedly arranged at one side of the mounting sleeve (6);
the top and the bottom of installation sleeve (6) are all fixed and are equipped with holding ring (61), are located the bottom holding ring (61) one side is fixed and is equipped with fixed lantern ring (62), the inside activity of fixed lantern ring (62) is run through has support sleeve (621), the periphery of support sleeve (621) is fixed and is equipped with screw thread cover (622), the top activity of screw thread cover (622) is equipped with fixation nut (623), butt joint room (624) have been seted up to the inside of support sleeve (621), the bottom activity of support sleeve (621) is run through has main contact (63), the top of main contact (63) is fixed and is equipped with butt joint double-screw bolt (631);
the inside fixed mounting of mount (7) has hydraulic pressure case (71), one side activity of hydraulic pressure case (71) is run through has switch contact (72), the top fixed mounting of mount (7) has guard plate (73), the bottom fixed mounting of mount (7) has driving motor (74), the fixed grafting mouth (711) that is equipped with in one end of hydraulic pressure case (71), the bottom of hydraulic pressure case (71) is fixed and is equipped with pushing post (712), and the bottom activity of pushing post (712) runs through in the inside of support sleeve (621), horizontal hydraulic chamber (713) have been seted up to the inside position that corresponds switch contact (72) of hydraulic pressure case (71), vertical hydraulic chamber (714) have been seted up to the inside position that corresponds push post (712), one end and the top of push post (712) of switch contact (72) all overlap and are equipped with sealing pad (715), the bottom fixed abutment sleeve (716) that is equipped with of push post (712), and abutment sleeve (716) are located the inside of abutment chamber (624), abutment sleeve (716) and abutment sleeve (624) correspond the position of switch contact (72) and are equipped with reset spring (717), the novel hydraulic oil pump is characterized in that a second return spring (722) is fixedly connected between the connecting disc (721) and the hydraulic tank (71), a limiting column (731) and a guide pipe (734) are fixedly arranged at the top of the protection plate (73), the limiting column (731) is located at one side of the guide pipe (734), a limiting bottom plate (732) is fixedly arranged at the bottom of the protection plate (73), a protection groove (733) is formed in the middle of one side of the protection plate (73), a toothed plate (735) is fixedly arranged at one side of the protection plate (73), two groups are arranged on two sides of the toothed plate (735) corresponding to the protection groove (733), a driving gear (741) is fixedly connected to an output shaft of the driving motor (74), and two groups of toothed plates (735) are arranged corresponding to the driving gear (741);
the bottom of spacing seat (75) has seted up spacing groove (751), protectant room (752) and opening (753) have been seted up to the inside of spacing seat (75), and the top of protectant room (752) is located in opening (753) intercommunication, the bottom activity of protectant room (752) is run through there is blanking cap (754), the bottom center of blanking cap (754) is fixed and is equipped with spliced pole (755), the bottom periphery of spliced pole (755) is fixed and is equipped with horizontal pole (756), and horizontal pole (756) are located the outside of protectant room (752).
2. A traction transformer for an electrified railway as defined in claim 1 wherein: the transformer box (1) is internally and fixedly provided with an iron core winding (11), and the tapping switch assembly (2) is arranged on one side of the iron core winding (11).
3. A traction transformer for an electrified railway as defined in claim 2 wherein: install room (51) have been seted up to the inside of mounting bracket (5), mount (7) are located the inside of installing room (51), the inside bottom mounting of installing room (51) is equipped with socket (52), cup joint the location between the bottom of erection column (4) and socket (52).
4. A traction transformer for an electrified railway according to claim 3 and wherein: the positioning ring (61) is positioned on the mounting column (4) through a screw, and one side of the positioning ring (61) positioned at the top end is fixedly connected with the fixing frame (7).
5. A traction transformer for an electrified railway as defined in claim 4 wherein: the main contact (63) is in threaded connection with the butt joint sleeve (716) through the butt joint stud (631), and the bottom end of the main contact (63) is positioned outside the support sleeve (621).
6. A traction transformer for an electrified railway as defined in claim 5 wherein: the screw sleeve (622) is in threaded connection with the fixing nut (623), and the fixing collar (62) and the supporting sleeve (621) are mounted in a limiting mode through the screw sleeve (622) and the fixing nut (623).
7. A traction transformer for an electrified railway as defined in claim 6 wherein: plunger discs (76) are fixedly arranged at one ends of the pushing posts (712) and the switching contacts (72), and the plunger discs (76) are slidably arranged in the corresponding transverse hydraulic chambers (713) and the corresponding vertical hydraulic chambers (714).
8. A traction transformer for an electrified railway as defined in claim 7 wherein: the switching contact (72) and the protection groove (733) are correspondingly arranged, and the protection groove (733) and the guide pipe (734) are communicated.
9. A traction transformer for an electrified railway as defined in claim 8 wherein: an oil pump (31) is fixedly installed in the installation head (3), and a hydraulic oil pipe (32) is fixedly connected between the oil pump (31) and the transverse hydraulic chamber (713) and the vertical hydraulic chamber (714) in a tapping mode.
10. The method of using a traction transformer for an electrified railway according to claim 9, comprising the specific steps of:
s1: penetrating a mounting column (4) into a mounting chamber (51), sleeving a mounting sleeve (6) on the mounting column (4) in the mounting chamber (51), tightening a screw of a positioning ring (61) to fix the mounting sleeve (6) on the mounting column (4), enabling the bottom end of the mounting column (4) to enter the inside of a sleeving seat (52) to be sleeved and positioned, penetrating a main contact (63) into a supporting sleeve (621), connecting the supporting sleeve (716) through a butt stud (631) at the top end, screwing a fixing nut (623) to fix the supporting sleeve (621) and a fixing collar (62), supporting the top end of the supporting sleeve (621) at the bottom of a fixing frame (7), and installing a tap switch assembly (2) on one side of an iron core winding in a transformer box (1), wherein a switching contact (72) and a pushing column (712) correspond to working contacts respectively to finish installation;
s2: the driving motor (74) is externally connected with an independent power supply and a switch, the driving gear (741) is in meshed transmission with the toothed plate (735), after the switching contact (72) is reset through the connecting disc (721) and the second reset spring (722), the protection plate (73) is lifted to the position of the position-limiting seat (75), the position-limiting column (731) enters the position-limiting groove (751) to limit, the switching contact (72) can be assisted to be blocked, the guide pipe (734) contacts the cross rod (756) and jacks the blocking cover (754), the protective agent in the protective agent chamber (752) can flow out from the bottom and enter the guide pipe (734) through a gap between the cross rod (756), finally, the protective agent is added into the protective chamber (752) through the opening (753), the bottom outlet of the protective agent chamber (752) is closed under the dead weight, and the protective contact (72) is protected
S3: the working mode is as follows: the horizontal hydraulic chamber (713) and the vertical hydraulic chamber (714) are independently connected with a hydraulic oil pipe (32) through corresponding connecting pipe ports (711), hydraulic oil is stored in the mounting head (3) and is conveyed through the oil pump (31), the hydraulic oil enters the inside of the horizontal hydraulic chamber (713) and the inside of the vertical hydraulic chamber (714) under the same pressure, the switching contact (72) and the connecting disc (721) can be pushed in an equalizing mode, the sealing gasket (715) plays a role in sealing, the switching contact (72) is directly pushed transversely, and the connecting disc (721) pushes the main contact (63) to move vertically through the butt joint sleeve (716).
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| CN111415811A (en) * | 2020-05-17 | 2020-07-14 | 辽宁易发式电气设备有限公司 | Double-body transformer connected by leads |
| CN111668006A (en) * | 2020-07-01 | 2020-09-15 | 贵州长征电气有限公司 | Oil-immersed simple vacuum on-load tap-changer |
| CN112652491A (en) * | 2020-12-04 | 2021-04-13 | 广东电网有限责任公司江门供电局 | Distribution network transformer tap changer switching device |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE863334A (en) * | 1977-01-27 | 1978-07-26 | Westinghouse Electric Corp | VACUUM TAPPED SWITCH FOR TRANSFORMER, USING REDUCING GEAR |
| WO1993023861A1 (en) * | 1992-05-15 | 1993-11-25 | Maschinenfabrik Reinhausen Gmbh | Step switch |
| CN2879372Y (en) * | 2006-06-15 | 2007-03-14 | 刘歆 | No-excitation linear voltage-adjusting strip-type tapped switch |
| CN103314424A (en) * | 2011-01-15 | 2013-09-18 | 赖茵豪森机械制造公司 | Tap changer with a pre-selector |
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| CN111415811A (en) * | 2020-05-17 | 2020-07-14 | 辽宁易发式电气设备有限公司 | Double-body transformer connected by leads |
| CN111668006A (en) * | 2020-07-01 | 2020-09-15 | 贵州长征电气有限公司 | Oil-immersed simple vacuum on-load tap-changer |
| CN112652491A (en) * | 2020-12-04 | 2021-04-13 | 广东电网有限责任公司江门供电局 | Distribution network transformer tap changer switching device |
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|---|---|
| CN116682656A (en) | 2023-09-01 |
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