CN107424809A - A kind of inductance-regulation resonance reactor open core bidirectional adjustment mechanism - Google Patents
A kind of inductance-regulation resonance reactor open core bidirectional adjustment mechanism Download PDFInfo
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- CN107424809A CN107424809A CN201710624884.1A CN201710624884A CN107424809A CN 107424809 A CN107424809 A CN 107424809A CN 201710624884 A CN201710624884 A CN 201710624884A CN 107424809 A CN107424809 A CN 107424809A
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- core
- screw rod
- inductance
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- resonance reactor
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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
- H01F29/08—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
- H01F29/10—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable part of magnetic circuit
-
- 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
- H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
- H01F29/146—Constructional details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/02—Adaptations of transformers or inductances for specific applications or functions for non-linear operation
- H01F38/023—Adaptations of transformers or inductances for specific applications or functions for non-linear operation of inductances
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
- H02P13/10—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by moving core, coil winding, or shield, e.g. by induction regulator
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Motor And Converter Starters (AREA)
Abstract
The present invention relates to inductance-regulation resonance reactor technical field, especially a kind of inductance-regulation resonance reactor open core bidirectional adjustment mechanism, including base and reactor outer barrel, it is bolted to connection between base and reactor outer barrel, motor is installed in base, motor output shaft is connected with lower screw rod by transmission mechanism, underdrive sleeve is bolted with the outside of lower screw rod, underdrive bush outer sleeve is connected to lower core, lower screw rod upper end is connected with power transmission shaft, power transmission shaft upper end is connected with upper screw rod by adapter, and upper screw rod and lower screw flight are oppositely oriented, drive socket is bolted with the outside of upper screw rod, upper drive socket overcoat is connected to upper core, connecting cylinder is cased with the outside of lower core and upper core, reach the standard grade bag and offline bag are respectively fixed with the outside of upper and lower two connecting cylinder.Change of the invention by designing the identical stroke different adjustment multiple of inductance-regulation resonance reactor, increase adjustment of inductance scope and improve iron core and the insulation processing of coil voltage distribution with multiple.
Description
Technical field
The present invention relates to inductance-regulation resonance reactor technical field, more particularly to a kind of inductance-regulation resonance reactor open core are double
To governor motion.
Background technology
Inductance is adjusted using " double I fonts open core relative motions " structure and principle for induction-regulated resonance reactor
Amount.Its iron core direction of motion is monomer single movement direction, and its adjustment of inductance scope and stroke all have certain limitations, and cause inductance
Amount regulation multiple is limited to, meanwhile, for its iron core of the induction-regulated resonance reactor of voltage levels and coil Potential distribution
Also it is relatively difficult.
The content of the invention
The invention aims to solve inductance value present in prior art to adjust the limited shortcoming of multiple, and
A kind of inductance-regulation resonance reactor open core bidirectional adjustment mechanism proposed.
To achieve these goals, present invention employs following technical scheme：
A kind of inductance-regulation resonance reactor open core bidirectional adjustment mechanism, including base and reactor outer barrel are designed, it is described
It is bolted to connection between base and reactor outer barrel, motor is installed in the base, the motor output shaft passes through
Transmission mechanism is connected with driving head, and the driving head is rotatably connected on base upper end, and the driving head upper end passes through adapter
Lower screw rod is connected with, is bolted with underdrive sleeve on the outside of the lower screw rod, the underdrive bush outer sleeve is connected to lower core, and institute
State lower core lower end and be provided with lower limiting mechanism, the lower screw rod upper end is connected with power transmission shaft, protection is provided with the outside of the power transmission shaft
Mechanism；
The power transmission shaft upper end is connected with upper screw rod, and the upper screw rod and lower screw flight rotation direction phase by adapter
Instead, drive socket being bolted with the outside of the upper screw rod, the upper drive socket overcoat is connected to upper core, and on the upper core
End is provided with upper limit mechanism, and the reactor outer barrel top has been bolted top cover, and the inside of top cover is fixed with footstock,
The upper screw rod is rotatably connected on footstock by second bearing seat, and connecting cylinder is cased with the outside of the lower core and upper core,
And two the connecting cylinder reactor outer tube inner wall is fixed on by fixed cover, be respectively fixed with the outside of upper and lower two connecting cylinder
Reach the standard grade bag and offline bag, and it is described reach the standard grade bag offline bag between connected by connecting line.
Preferably, the transmission mechanism includes the first angular wheel for being fixed on motor output shaft, and is fixed on transmission
Second angular wheel of head lower end, second angular wheel are rotatably connected on base end face by first bearing seat, and described
First angular wheel and the intermeshing of the second angular wheel.
Preferably, the protection mechanism includes being socketed in the protection cylinder on the outside of power transmission shaft, and the protection cylinder both sides are logical
Cross stator and be fixed on reactor outer tube inner wall.
Preferably, the lower limiting mechanism includes the locating part for being connected to underdrive sleeve lower end, and the locating part passes through
Trip bolt is fixed on lower core bottom, and the upper limit mechanism is identical with lower limiting mechanism structure.
Preferably, the adapter is specially candan universal joint.
Preferably, bag and the offline bag outer surface of reaching the standard grade is cased with protective jacket.
Preferably, the lower core and upper core are I font open cylinders iron cores.
A kind of inductance-regulation resonance reactor open core bidirectional adjustment mechanism proposed by the present invention, beneficial effect are：This hair
It is bright to adjust and improve in core structure and quantitative aspects, " I fonts open core " quantity and forms of motion are changed, is passed through
" I word cylindrical types open core " slides in coil changes inductance value, and this method is mainly by coil and " double 1 " word cylindrical type openings
Iron core two parts are formed, and two " I font open cylinders iron cores " are changed to by original one " I font open cylinders iron core ", and together
When original single movement direction is changed to two iron core relative motions, use of the invention, adopted for induction-regulated resonance reactor
In structure with single " I fonts open core " one-way movement, increase inductance-regulation resonance reactor inductance regulation multiple and improve
Iron core and coil Potential distribution processing grade.
Brief description of the drawings
Fig. 1 is a kind of structural representation of inductance-regulation resonance reactor open core bidirectional adjustment mechanism proposed by the present invention.
In figure：Base 1, motor 2, the first angular wheel 3, first bearing seat 4, the second angular wheel 5, reactor outer barrel 6,
Driving head 7, adapter 8, locating part 9, lower screw rod 10, underdrive sleeve 11, stator 12, power transmission shaft 13, protective jacket 14, reach the standard grade
Bag 15, upper core 16, fixed cover 17, second bearing seat 18, footstock 19, top cover 20, connecting cylinder 21, upper drive socket 22, upper spiral shell
Bar 23, connecting line 24, protection cylinder 25, offline bag 26, lower core 27.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.
Reference picture 1, a kind of inductance-regulation resonance reactor open core bidirectional adjustment mechanism, including base 1 and reactor outer barrel
6, it is bolted to connection between base 1 and reactor outer barrel 6, motor 2 is installed in base 1, the output shaft of motor 2 passes through biography
Motivation structure is connected with driving head 7, and transmission mechanism includes the first angular wheel 3 for being fixed on the output shaft of motor 2, and is fixed on biography
The second angular wheel 5 of first 7 lower end is moved, the second angular wheel 5 is rotatably connected on the bottom surface of base 1 by first bearing seat 4, and the
One angular wheel 3 and the second angular wheel 5 are intermeshed, and driving head 7 is rotatably connected on the upper end of base 1.
The upper end of driving head 7 is connected with lower screw rod 10, the specially candan universal joint of adapter 8, lower screw rod 10 by adapter 8
Outside is bolted with underdrive sleeve 11, is socketed with lower core 27 outside underdrive sleeve 11, and the lower end of lower core 27 is provided with lower limit
Mechanism, lower limiting mechanism include the locating part 9 for being connected to the lower end of underdrive sleeve 11, and locating part 9 is fixed on by trip bolt
The bottom of lower core 27, the setting of locating part 9 can ensure that lower core 27 follows drive socket 11 is stable to move up and down, but without
With rotating with it；Because the rotating shaft transmission distance in whole length direction is longer, and adapter 8 can ensure rotation process transmission
When, it is allowed to if slight misalignment occurs for each connection member, without whole major axis is damaged.
The lower upper end of screw rod 10 is connected with power transmission shaft 13, and the outside of power transmission shaft 13 is provided with protection mechanism, and protection mechanism includes socket
Protection cylinder 25 in the outside of power transmission shaft 13, and the both sides of protection cylinder 25 are fixed on the inwall of reactor outer barrel 6 by stator 12, prevent
Casing 25 can play the protective effect to power transmission shaft 13, ensure the transmission process steady in a long-term of power transmission shaft 13, without by outer
Boundary influences.
The upper end of power transmission shaft 13 is connected with upper screw rod 23, and upper screw rod 23 and the lower thread rotary orientation phase of screw rod 10 by adapter 8
Instead, the upper outside of screw rod 23 is bolted with drive socket 22, and upper core 16, and the upper end of upper core 16 are socketed with outside upper drive socket 22
Provided with upper limit mechanism, upper limit mechanism is identical with lower limiting mechanism structure, and the top of reactor outer barrel 6 has been bolted top
Lid 20, the inner side of top cover 20 are fixed with footstock 19, and upper screw rod 23 is rotatably connected on footstock 19 by second bearing seat 18, due to upper
Screw rod 23 is opposite with the lower thread rotary orientation of screw rod 10 so that drive socket transmission direction is on the contrary, i.e. lower core 27 and upper core 16 is transported
It is dynamic in opposite direction.
Lower core 27 and upper core 16 are I font open cylinders iron cores, and lower core 27 and the outside of upper core 16 are cased with
Connecting cylinder 21, and two connecting cylinders 21 are fixed on the inwall of reactor outer barrel 6, the upper and lower outside point of two connecting cylinder 21 by fixed cover 17
Reach the standard grade bag 15 and offline bag 26 are not fixed with, and are reached the standard grade and connected between bag 15 and offline bag 26 by connecting line 24, bag 15 of reaching the standard grade
Protective jacket 14 is cased with 26 outer surfaces of offline bag, and protective jacket 14 is to reaching the standard grade bag 15 and offline bag 26 plays protection well and made
With avoiding it from being damaged because of external force.
The course of work：Start motor 2 first, motor 2 drives the first angular wheel 3 to rotate, due to the He of the first angular wheel 3
Second angular wheel 5 is intermeshed, and changes rotation direction, and then drives lower screw rod 10 to rotate, and is then driven by lower screw rod 10
The upper synchronous axial system of screw rod 23, so that underdrive sleeve 11 drives lower core 27 to move down, in the upper drive of drive socket 22
Iron core 16 moves up, and due to reaching the standard grade bag 15 and offline bag 26 is fixed on reactor outer barrel 6, you can realize and wrapped along iron core
The process of relative displacement occurs, two " I font open cylinders iron cores " are changed to by original one " I font open cylinders iron core ",
And original single movement direction is changed to two iron core relative motions simultaneously, it is electric under conditions of same movement stroke so as to realize
Sense regulation multiple increase 200%, iron core reduces 50% advantage with coil current potential processing distance.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (7)
1. a kind of inductance-regulation resonance reactor open core bidirectional adjustment mechanism, including base (1) and reactor outer barrel (6), described
It is bolted to connection between base (1) and reactor outer barrel (6), it is characterised in that motor is installed in the base (1)
(2), motor (2) output shaft is connected with driving head (7) by transmission mechanism, and the driving head (7) is rotatably connected on base
(1) upper end, and the driving head (7) upper end is connected with lower screw rod (10), lower screw rod (10) the outside spiral shell by adapter (8)
Underdrive sleeve (11) is connected to, lower core (27), and the lower core (27) lower end are socketed with outside the underdrive sleeve (11)
Provided with lower limiting mechanism, lower screw rod (10) upper end is connected with power transmission shaft (13), and protection is provided with the outside of the power transmission shaft (13)
Mechanism；
Power transmission shaft (13) upper end is connected with upper screw rod (23), and the upper screw rod (23) and lower screw rod by adapter (8)
(10) thread rotary orientation on the outside of the upper screw rod (23) on the contrary, be bolted with drive socket (22), the upper drive socket (22) is outside
Upper core (16) is socketed with, and the upper core (16) upper end is provided with upper limit mechanism, reactor outer barrel (6) top passes through
Bolt connection has top cover (20), is fixed with footstock (19) on the inside of the top cover (20), the upper screw rod (23) passes through second bearing
Seat (18) is rotatably connected on footstock (19), and connecting cylinder (21) is cased with the outside of the lower core (27) and upper core (16), and
Two connecting cylinders (21) are fixed on reactor outer barrel (6) inwall, upper and lower two connecting cylinder (21) by fixed cover (17)
Outside is respectively fixed with reach the standard grade bag (15) and offline bag (26), and described reach the standard grade passes through connection between bag (15) and offline bag (26)
Line (24) connects.
A kind of 2. inductance-regulation resonance reactor open core bidirectional adjustment mechanism according to claim 1, it is characterised in that institute
The first angular wheel (3) that transmission mechanism includes being fixed on motor (2) output shaft is stated, and is fixed on driving head (7) lower end
Second angular wheel (5), second angular wheel (5) are rotatably connected on base (1) bottom surface by first bearing seat (4), and
First angular wheel (3) and the second angular wheel (5) intermeshing.
A kind of 3. inductance-regulation resonance reactor open core bidirectional adjustment mechanism according to claim 1, it is characterised in that institute
Stating protection mechanism includes being socketed in the protection cylinder (25) on the outside of power transmission shaft (13), and the protection cylinder (25) both sides pass through fixation
Piece (12) is fixed on reactor outer barrel (6) inwall.
A kind of 4. inductance-regulation resonance reactor open core bidirectional adjustment mechanism according to claim 1, it is characterised in that institute
The locating part (9) that lower limiting mechanism includes being connected to underdrive sleeve (11) lower end is stated, the locating part (9) passes through trip bolt
Lower core (27) bottom is fixed on, and the upper limit mechanism is identical with lower limiting mechanism structure.
A kind of 5. inductance-regulation resonance reactor open core bidirectional adjustment mechanism according to claim 1, it is characterised in that institute
It is specially candan universal joint to state adapter (8).
A kind of 6. inductance-regulation resonance reactor open core bidirectional adjustment mechanism according to claim 1, it is characterised in that institute
State reach the standard grade bag (15) and it is offline bag (26) outer surface be cased with protective jacket (14).
A kind of 7. inductance-regulation resonance reactor open core bidirectional adjustment mechanism according to claim 1, it is characterised in that institute
It is I font open cylinders iron cores to state lower core (27) and upper core (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710624884.1A CN107424809B (en) | 2017-07-27 | 2017-07-27 | A kind of inductance-regulation resonance reactor open core bidirectional adjustment mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710624884.1A CN107424809B (en) | 2017-07-27 | 2017-07-27 | A kind of inductance-regulation resonance reactor open core bidirectional adjustment mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107424809A true CN107424809A (en) | 2017-12-01 |
| CN107424809B CN107424809B (en) | 2019-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710624884.1A Active CN107424809B (en) | 2017-07-27 | 2017-07-27 | A kind of inductance-regulation resonance reactor open core bidirectional adjustment mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111292932A (en) * | 2018-12-06 | 2020-06-16 | 航天科工惯性技术有限公司 | Rotatable transmission mechanism for non-contact signal coupling |
| CN116504514A (en) * | 2023-04-17 | 2023-07-28 | 江苏征日电力设备有限公司 | Inductance-adjusting type resonant reactor open iron core structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3796349B1 (en) * | 2019-09-20 | 2022-08-24 | Siemens Energy Global GmbH & Co. KG | Choke coil with adjustable iron core |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB347599A (en) * | 1930-01-25 | 1931-04-27 | John William Geddes | An improved inductance for motor control |
| GB1097303A (en) * | 1963-07-08 | 1968-01-03 | Westinghouse Brake & Signal | Improvements relating to electrical control devices for electrically driven vehicles |
| CN102568755A (en) * | 2010-12-10 | 2012-07-11 | *** | Water-cooling reactor with online continuous adjustment function |
| CN103219138A (en) * | 2013-04-19 | 2013-07-24 | 上海杰智电工科技有限公司 | High-voltage adjustable reactor |
| CN203881930U (en) * | 2014-06-03 | 2014-10-15 | 武汉福润斯电气有限公司 | Integrated adjustable-inductance resonance electric voltage booster |
| CN204651152U (en) * | 2015-04-28 | 2015-09-16 | 淄博联诚电力科技有限公司 | 35kV magnetic control velocity modulation energy saver |
| CN106298189A (en) * | 2016-10-11 | 2017-01-04 | 岭南师范学院 | A kind of mechanical type controllable impedance |
| CN206003594U (en) * | 2016-09-13 | 2017-03-08 | 广东电网有限责任公司江门供电局 | Compensating reactance apparatus and system |
-
2017
- 2017-07-27 CN CN201710624884.1A patent/CN107424809B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB347599A (en) * | 1930-01-25 | 1931-04-27 | John William Geddes | An improved inductance for motor control |
| GB1097303A (en) * | 1963-07-08 | 1968-01-03 | Westinghouse Brake & Signal | Improvements relating to electrical control devices for electrically driven vehicles |
| CN102568755A (en) * | 2010-12-10 | 2012-07-11 | *** | Water-cooling reactor with online continuous adjustment function |
| CN103219138A (en) * | 2013-04-19 | 2013-07-24 | 上海杰智电工科技有限公司 | High-voltage adjustable reactor |
| CN203881930U (en) * | 2014-06-03 | 2014-10-15 | 武汉福润斯电气有限公司 | Integrated adjustable-inductance resonance electric voltage booster |
| CN204651152U (en) * | 2015-04-28 | 2015-09-16 | 淄博联诚电力科技有限公司 | 35kV magnetic control velocity modulation energy saver |
| CN206003594U (en) * | 2016-09-13 | 2017-03-08 | 广东电网有限责任公司江门供电局 | Compensating reactance apparatus and system |
| CN106298189A (en) * | 2016-10-11 | 2017-01-04 | 岭南师范学院 | A kind of mechanical type controllable impedance |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111292932A (en) * | 2018-12-06 | 2020-06-16 | 航天科工惯性技术有限公司 | Rotatable transmission mechanism for non-contact signal coupling |
| CN111292932B (en) * | 2018-12-06 | 2021-09-17 | 航天科工惯性技术有限公司 | Rotatable transmission mechanism for non-contact signal coupling |
| CN116504514A (en) * | 2023-04-17 | 2023-07-28 | 江苏征日电力设备有限公司 | Inductance-adjusting type resonant reactor open iron core structure |
| CN116504514B (en) * | 2023-04-17 | 2023-10-27 | 江苏征日电力设备有限公司 | Inductance-adjusting type resonant reactor open iron core structure |
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| Publication number | Publication date |
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| CN107424809B (en) | 2019-03-22 |
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