CN205622558U - Parallelly connected 12 pulsation actuating systems of reversible roughing mill direct current speed regulator - Google Patents
Parallelly connected 12 pulsation actuating systems of reversible roughing mill direct current speed regulator Download PDFInfo
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- CN205622558U CN205622558U CN201620331778.5U CN201620331778U CN205622558U CN 205622558 U CN205622558 U CN 205622558U CN 201620331778 U CN201620331778 U CN 201620331778U CN 205622558 U CN205622558 U CN 205622558U
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Abstract
The utility model discloses a parallelly connected 12 pulsation actuating systems of reversible roughing mill direct current speed regulator, including armature major loop, synchronization signal return circuit and excitation return circuit, the vice two winding looks phasic differences of limit triangle Y of the rectifier transformer of armature major loop are 30 degrees, form 12 pulsation actuating systems, and two pairs of limit windings of triangle Y are connected respectively by the parallelly connected triangle Y device group that forms of 4 tunnel reversible 6RA70 devices, and triangle Y device component is do not passed through and is exported balanced reactor and be connected to direct current motor armature winding, triangle device group is as main device group, and its main device of triangle group passes through SIMOLINK fiber connection Y main device of group and excitation return circuit 6RA7085 device, the synchronization signal return circuit contains triangle / triangle synchronous transformer T1 and triangle Y synchronous transformer T2. This parallelly connected 12 pulsation actuating systems of reversible roughing mill direct current speed regulator has advantages such as structural design is reasonable, safe and reliable, can increase substantially output current simultaneously, can generally use widely.
Description
Technical field
This utility model belongs to DC speed regulator equipment technical field, is specifically related to a kind of reversible roughing mill DC speed regulator 12 pulsation drive systems in parallel.
Background technology
Reversible roughing mill is the key equipment of hot rolling medium-width strip production line, it is desirable to low speed stings steel, high-speed rolling, and the rotating reversible rolling of the fast frequency of high rhythm produces.The performance of reversible roughing mill DC drive control system how, will directly influence the efficiency of hot rolling medium-width strip production line.Middle width strip roughing plain-barreled roll direct-current main motor power is the biggest, and low speed has the highest impact load when stinging steel, sometimes separate unit main motor current reaches 6500KW/DC750V, armature supply is up to 9300A, as considered, frequent 2.5 times are stung steel impact load, and speed-regulating actuator output maximum current need to reach 24000A.This high-power, HI high impact load, the application scenario of frequent rotating so that major part DC speed regulator all cannot meet its performance requirement.
Utility model content
The purpose of this utility model is to provide a kind of reversible roughing mill DC speed regulator 12 pulsation drive systems in parallel, with the problem solving to propose in above-mentioned background technology.
nullFor achieving the above object，This utility model following technical scheme of offer: a kind of reversible roughing mill DC speed regulator 12 pulsation drive systems in parallel，Including armature major loop、Synchronizing signal loop and energized circuit，The former limit of rectifier transformer of described armature major loop is connected with high pressure incoming power，Secondary △/Y two winding phases differs 30 degree，Form pulsation drive system，△/Y two vice-side winding connects two groups of devices of △/Y respectively，△/Y device group is respectively composed in parallel by 4 tunnel reversible 6RA70 devices，Every road 6RA70 device all comprises alternating current inlet wire switch and reactor，△/Y device group is connected to armature of direct current motor winding respectively through output Equilibrium Reactor，△ device group is as master device group，Its △ group master device is connected by DP cable with basic automation systems PLC，△ group master device is connected with Y group master device also by SIMOLINK optical fiber，Control Y device group to run as from device group，△ group master device connects energized circuit 6RA7085 device also by SIMOLINK optical fiber，Control excitation，Described synchronizing signal loop includes Y/Y synchro source transformator，One end is connected with high pressure incoming power，The other end is connected with △/△ synchrotrans T1 by switch，The other end of described synchro source transformator is connected with △/Y synchrotrans T2 also by switch，The other end of △/△ synchrotrans T1 connects the △ group master device in armature major loop △ device group，The other end of △/Y synchrotrans T2 connects the Y group master device in armature major loop Y device group，Synchronization pulse is provided for armature major loop，Described energized circuit comprises the irreversible 6RA7085 device of a platform independent，One end is connected with high pressure incoming power by exciting transformer，The other end is connected with excitation of direct current generator winding，Independent excitation power supply is provided for direct current generator.
Preferably, the internally installed of described synchronizing signal loop has △/△ synchrotrans T1 and △/Y synchrotrans T2, one end of described △/△ synchrotrans T1 and △/Y synchrotrans T2 is connected directly to high pressure incoming power by synchro source transformator, and the other end is correspondingly connected to the master device of armature major loop △/Y device group.
Preferably, described armature major loop has the rectifier transformer that secondary two winding phases differs 30 degree, 8 6RA70 devices are divided into two groups of device groups of principal and subordinate, one of which 6RA70 device be divided into △ group master device, △ group from device 1, △ group from device 2 and △ group from device 3, another group 6RA70 device be divided into Y group master device, Y group from device 1, Y group from device 2 and Y group from device 3.
Preferably, described energized circuit comprises a special irreversible 6RA7085 device of excitation controlled by the △ group master device of armature major loop.
Compared with prior art, the beneficial effects of the utility model are: this reversible roughing mill DC speed regulator 12 pulsation drive systems in parallel, by the design in synchronizing signal loop so that it is more preferable that DC speed regulator in use controls effect, and fault rate is lower；By the design of 12 pulsation, reduce the harmonic wave interference to electrical network；This reversible roughing mill DC speed regulator 12 pulsation drive systems in parallel, have reasonable in design, the advantage such as safe and reliable, can increase substantially transformation efficiency simultaneously, can use with popularity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: △ group is from device 1(1), △ group master device (2), △ group is from device 2(3), △ group is from device 3(4), Y group is from device 1(5), Y group master device (6), Y group is from device 2(7), Y group is from device 3(8), 6RA7085 device (9), △/△ synchrotrans T1(10), △/Y synchrotrans T2(11), basic automation systems PLC(12), direct current generator (13), synchro source transformator (14), rectifier transformer (15), exciting transformer (16).
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
nullThis utility model provides the reversible roughing mill DC speed regulator of one as shown in Figure 1 12 pulsation drive systems in parallel，Including armature major loop、Synchronizing signal loop and energized circuit，The former limit of rectifier transformer 15 of described armature major loop is connected with high pressure incoming power，Secondary △/Y two winding phases differs 30 degree，Form 12 pulsation drive systems，Reduce 5-7 subharmonic，Effectively reduce the interference to electrical network，△/Y two vice-side winding connects △/Y device group respectively，△/Y device group is run with master-slave control method，△ group is as master device group，Y group is as from device group，△ group master device group uses rotating speed、Current double closed-loop controls，Y group uses closed-loop current control from device group，Its current setting value comes from △ group master device 2，I.e. two groups devices use identical current setting value instruction，To ensure that two groups of devices of △/Y respectively carry 1/2 armature supply，△ group master device 2 is additionally coupled to energized circuit 6RA7085 device 9，Control excitation.For expanding output electric current further, △/Y device group is respectively composed in parallel by 4 tunnel reversible 6RA70 devices, every road 6RA70 device all comprises alternating current inlet wire switch and balance reactor, in the device group being connected in parallel, synchronization has only allowed a master device, and other are from using parallel interface to communicate between device, master and slave devices, every device being connected in parallel all configures CUD2 expansion board, uses the triggering pulse of master device from device.When being connected in parallel, master device is placed in the centre position of all parallel connection apparatus as far as possible, to shorten signal transmission time as far as possible, two groups of 6RA70 device groups are connected to direct current generator 13 armature winding through output Equilibrium Reactor, in 12 pulse parallel connections connect commutation system, owing to the supply voltage of two 6RA70 devices has the phase contrast of 30 °, the AC compounent making the output commutating voltage of two table apparatus there is also phase contrast, therefore the parallel connection of two groups of devices is realized, it is necessary to use DC side Equilibrium Reactor to decouple.Meanwhile, DC side Equilibrium Reactor is to suppression DC side pulsation of current, and reducing harmonic wave has extremely important effect.
Inside induction reactance due to rectifier transformer, under high-impact load condition, armature major loop moment will appear from the big electric current of up to more than 20,000 ampere, rectifier transformer secondary voltage waveform is caused to produce serious falling and distort, in this, as pulse-triggered synchronizing signal reference, will cause triggering pulse confusion and damage device, so introducing independent synchronizing signal loop here.Y/Y synchro source transformator 14 one end in synchronizing signal loop is connected with high pressure incoming power, the other end is connected with △/△ synchrotrans T1 and △/Y synchrotrans T2 respectively by switch, the other end of △/△ synchrotrans T1 connects the △ group master device 2 of armature major loop, the other end of △/Y synchrotrans T2 connects the Y group master device 6 of armature major loop, ensure that synchrotrans secondary phase place is identical with corresponding armature major loop device phase place, provide reliable and stable master pulse synchronizing signal for armature major loop 6RA70 device.
Owing to motor is excessive, energized circuit uses the irreversible 6RA7085 device 9 of a platform independent to provide excitation, its one end is connected with high pressure incoming power by exciting transformer 16, and the other end is connected with direct current generator 13 Exciting Windings for Transverse Differential Protection, provides independent excitation power supply for direct current generator 13.
Basic automation systems PLC12 are connected with △ group master device 2 by DP cable, monitor the operation of whole drive system.
Last it is noted that the foregoing is only preferred embodiment of the present utility model; it is not limited to this utility model; although this utility model being described in detail with reference to previous embodiment; for a person skilled in the art; technical scheme described in foregoing embodiments still can be modified by it; or wherein portion of techniques feature is carried out equivalent; all within spirit of the present utility model and principle; the any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (4)
- null1. reversible roughing mill DC speed regulator 12 pulsation drive systems in parallel，Including armature major loop、Synchronizing signal loop and energized circuit，Rectifier transformer (15) the former limit of described armature major loop is connected with high pressure incoming power，Secondary △/Y two winding phases differs 30 degree，Form 12 pulsation drive systems，△/Y two vice-side winding connects two groups of devices of △/Y respectively，△/Y device group is respectively composed in parallel by 4 tunnel reversible 6RA70 devices，Every road 6RA70 device all comprises alternating current inlet wire switch and reactor，△/Y device group is connected to direct current generator (13) armature winding respectively through output Equilibrium Reactor，△ device group is master device group，Its △ group master device (2) and basic automation systems PLC(12) it is connected by DP cable，Described △ group master device (2) is connected with the master device (6) from device group Y group by SIMOLINK optical fiber，Described △ group master device (2) connects energized circuit 6RA7085 device (9) by SIMOLINK optical fiber，Described synchronizing signal loop includes Y/Y synchro source transformator (14)，One end of described Y/Y synchro source transformator (14) is connected with high pressure incoming power，The other end is by switch and △/△ synchrotrans T1(10) it is connected，The other end of described synchro source transformator (14) is also by switch and △/Y synchrotrans T2(11) it is connected，Described △/△ synchrotrans T1(10) the other end connect △ group master device (2) in armature major loop △ device group，Described △/Y synchrotrans T2(11) the other end connect Y group master device (6) in armature major loop Y device group，Described energized circuit comprises the irreversible 6RA7085 device (9) of a platform independent，One end of described 6RA7085 device (9) is connected with high pressure incoming power by exciting transformer (16)，The other end is connected with direct current generator (13) Exciting Windings for Transverse Differential Protection.
- One the most according to claim 1 reversible roughing mill DC speed regulator 12 pulsation drive systems in parallel, it is characterized in that: the internally installed of described synchronizing signal loop has △/△ synchrotrans T1(10) and △/Y synchrotrans T2(11), described △/△ synchrotrans T1(10) and △/Y synchrotrans T2(11) one end be connected directly to high pressure incoming power by synchro source transformator (14), the other end is correspondingly connected to the master device of armature major loop △/Y device group.
- One the most according to claim 1 reversible roughing mill DC speed regulator 12 pulsation drive systems in parallel, it is characterized in that: described armature major loop has the rectifier transformer (15) that secondary two winding phases differs 30 degree, 8 6RA70 devices are divided into two groups of device groups of principal and subordinate, one of which 6RA70 device is divided into △ group master device (2), △ group from device 1(1), △ group is from device 2(3) and △ group from device 3(4), another group 6RA70 device is divided into Y group master device (6), Y group from device 1(5), Y group is from device 2(7) and Y group from device 3(8).
- One the most according to claim 1 reversible roughing mill DC speed regulator 12 pulsation drive systems in parallel, it is characterised in that: described energized circuit comprises a special irreversible 6RA7085 device of excitation controlled by △ group master device (2) of armature major loop.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110993292A (en) * | 2019-11-15 | 2020-04-10 | 朱祖乐 | Single 12-pulse rectifier transformer and equivalent multiphase rectifier unit formed by same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110993292A (en) * | 2019-11-15 | 2020-04-10 | 朱祖乐 | Single 12-pulse rectifier transformer and equivalent multiphase rectifier unit formed by same |
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