CN105811391A - Phase sequence adjustment apparatus, motor, electrically operated valve and automatic filter - Google Patents
Phase sequence adjustment apparatus, motor, electrically operated valve and automatic filter Download PDFInfo
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- CN105811391A CN105811391A CN201610318144.0A CN201610318144A CN105811391A CN 105811391 A CN105811391 A CN 105811391A CN 201610318144 A CN201610318144 A CN 201610318144A CN 105811391 A CN105811391 A CN 105811391A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/004—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of incorrect phase sequence; with switching for obtaining correct phase sequence
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/097—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against wrong direction of rotation
Abstract
The invention discloses a phase sequence adjustment apparatus, a motor, an electrically operated valve and an automatic filter, and relates to the technical field of phase sequence control; by adoption of the phase sequence adjustment apparatus, equipment can work normally based on original setting when the phase sequence of the power supply is changed. The phase sequence adjustment apparatus comprises a three-phase power supply input end and a three-phase power supply output end which are connected, a phase sequence recognition unit which is connected with the three-phase power supply input end, and a switch control unit, wherein the switch control unit comprises a control module and a switch module; the control module is connected with the phase sequence recognition unit; the switch module comprises a first switch group and a second switch group; the first switch group and the second switch group are connected between the three-phase power supply input end and the three-phase power supply output end through positive phase sequence and negative phase sequence connecting methods respectively; and the control module is used for controlling the first switch group to be connected and controlling the second switch group to be disconnected when the phase sequence recognition unit recognizes that the three-phase power supply input end is in the positive phase sequence, and controlling the first switch group to be disconnected and controlling the second switch group to be connected when the phase sequence recognition unit recognizes that the three-phase power supply input end is in the negative phase sequence
Description
Technical field
The present invention relates to phase sequence control technical field, particularly relate to a kind of phase sequence adjusting apparatus, motor, electrodynamic valve and automatic filter.
Background technology
It is all adopt three phase mains that current much equipment is powered, when the phase sequence of power supply is because of situation generation commutations such as human operational errors, it is easy to cause equipment fault even to damage, therefore that the adjustment of the phase sequence of power supply is particularly significant.
Such as, wide variety of water-saving drip irrigation automatic filter in agricultural production, it includes one or more three-phase electric valve, by controlling the unlatching of electrodynamic valve, close and carry out automatic fitration, clean, blowdown, the process using automatic filter is frequently encountered the reasons such as power supply is changed because of maintenance or manual operation is improper and has converted original three-phase phase-sequence, the rotation direction that so can cause the motor in electrodynamic valve occurs and normally debugs the situation that the rotation direction arranging under state is contrary, and then can cause electrodynamic valve that malfunction occurs, machinery is stuck, the problems such as the motor overload of electrodynamic valve burns, therefore how to ensure when the phase sequence generation commutation of power supply, equipment remains to become, according to the former normal operation that arranges, the problem that important need solve.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of phase sequence adjusting apparatus, motor, electrodynamic valve and automatic filter, it is possible to when realizing the phase sequence generation commutation of power supply, equipment remains to arrange normal operation according to former.
For reaching above-mentioned purpose, present invention generally provides following technical scheme:
On the one hand, embodiments provide a kind of phase sequence adjusting apparatus, including:
Three-phase power input end, three-phase power output end, phase sequence recognition unit and switch control unit；
Described three-phase power input end is connected with described three-phase power output end, and described phase sequence recognition unit is connected to described three-phase power input end, and described phase sequence recognition unit is for identifying the phase sequence of described three-phase power input end；
Described switch control unit includes controlling module and switch module, described control module is connected to described phase sequence recognition unit, described switch module includes the first switches set and second switch group, described first switches set adopts positive phase sequence connection to access between described three-phase power input end and described three-phase power output end, and described second switch group adopts negative-phase sequence connection to access between described three-phase power input end and described three-phase power output end；
Described control module is for when three-phase power input end described in described phase sequence recognition unit identification is positive phase sequence, control described first switches set and be in connected state, and described second switch group is off, when three-phase power input end described in described phase sequence recognition unit identification is negative-phase sequence, control described first switches set to be off, and described second switch group is in connected state.
Specifically, described first switches set includes the first switch contact and second switch contact, described first switch contact is connected between a phase of described three-phase power input end and a phase of described three-phase power output end, and described second switch contact is connected between another phase of described three-phase power input end and another phase of described three-phase power output end；Described second switch group includes the 3rd switch contact and the 4th switch contact, described 3rd switch contact is connected between a phase of described three-phase power input end and another phase of described three-phase power output end, and described 4th switch contact is connected between another phase of described three-phase power input end and a phase of described three-phase power output end.
Specifically, described switch control unit is auxiliary reclay, described control module is the coil of described auxiliary reclay, described first switch contact, described second switch contact, described 3rd switch contact and the first normally-closed contact of described 4th switch contact respectively described auxiliary reclay, the second normally-closed contact, the first normally opened contact and the second normally opened contact；The coil of described auxiliary reclay is connected in a branch road of described phase sequence recognition unit, when three-phase power input end described in described phase sequence recognition unit identification is positive phase sequence, a described branch road is in off state, when three-phase power input end described in described phase sequence recognition unit identification is negative-phase sequence, a described branch road is in connected state.
Specifically, described phase sequence recognition unit is phase sequence relay, described phase sequence relay includes normally open contact, described normally open contact, for being off when three-phase power input end described in described phase sequence relay identification is positive phase sequence, is in connected state when three-phase power input end described in described phase sequence relay identification is negative-phase sequence；The described control module of described switch control unit and described normally open contact are connected into loop.
Further, above-mentioned phase sequence adjusting apparatus also includes: fuse, and described three-phase power input end is connected to described phase sequence recognition unit by described fuse.
On the other hand, the embodiment of the present invention also provides for a kind of motor, including:
Motor body and above-mentioned phase sequence adjusting apparatus；
Described motor body includes three phase mains link, and described three phase mains link is connected with the described three-phase power output end of described phase sequence adjusting apparatus.
Further, above-mentioned motor also includes: the first catalyst and the second catalyst；The positive phase sequence connection that adopts the normally opened main contacts of described first catalyst accesses between described three-phase power output end and the described three phase mains link of described motor body, and the normally opened main contacts of described second catalyst adopts negative-phase sequence connection to access between described three-phase power output end and the described three phase mains link of described motor body；Described motor body includes the first signaling switch and secondary signal switch；Described first signaling switch, the coil of described first catalyst and the normally closed auxiliary contact of described second catalyst be connected on described three-phase power input end arbitrarily biphase between constitute first control circuit；Described secondary signal switch, the coil of described second catalyst and the normally closed auxiliary contact of described first catalyst be connected on described three-phase power input end arbitrarily biphase between constitute second control circuit.
Further, above-mentioned motor also includes: chopper, and one end of described chopper is connected to described three-phase power input end, and the other end of described chopper is used for connecting three phase mains.
On the other hand, the embodiment of the present invention also provides for a kind of electrodynamic valve, including:
Above-mentioned motor；
Described first signaling switch is the start signal switch of described electrodynamic valve, the shutdown signal that described secondary signal switch is described electrodynamic valve switchs, when described electrodynamic valve is opened, described first signaling switch is in connected state, when described electrodynamic valve cuts out, described secondary signal switch is in connected state；
Described electrodynamic valve also includes valve and opens limit switch and valve cut out limit switch, limit switch opened by described valve and described valve cuts out limit switch and is normally closed switch, described valve is opened limit switch and is connected in described first control circuit, and described valve cuts out limit switch and is connected in described second control circuit.
On the other hand, the embodiment of the present invention also provides for a kind of automatic filter, including:
Above-mentioned electrodynamic valve, the quantity of described electrodynamic valve is at least one.
A kind of phase sequence adjusting apparatus that the embodiment of the present invention provides, motor, electrodynamic valve and automatic filter, by the power phase of phase sequence recognition unit identification three-phase power input end in phase sequence adjusting apparatus, and it is positive phase sequence or negative-phase sequence according to power phase, the control module making switch control unit controls switch module accordingly, the power phase making no matter three-phase power input end is positive phase sequence or negative-phase sequence, the phase sequence of three-phase power output end is positive phase sequence, so it can be avoided that cause the phase sequence of three-phase power output end that commutation also occurs when non-default commutation occurs the power phase of three-phase power input end, the phase sequence making three-phase power output end keeps positive phase sequence；When phase sequence adjusting apparatus accesses between three phase mains and equipment, default phase sequence connection can be adopted to be connected to the three phase mains link of equipment three-phase power output end as required, make the three phase mains link of equipment for presetting phase sequence, wherein presetting phase sequence can be positive phase sequence or negative-phase sequence, if during the power phase generation commutation of three-phase power input end, the phase sequence of three-phase power output end is still positive phase sequence, then the phase sequence of the three phase mains link of equipment still keeps former default phase sequence, and therefore equipment remains to arrange normal operation according to former.
Accompanying drawing explanation
The block diagram of a kind of phase sequence adjusting apparatus that Fig. 1 provides for the embodiment of the present invention；
The circuit diagram of a kind of phase sequence adjusting apparatus that Fig. 2 provides for the embodiment of the present invention；
The circuit diagram of a kind of motor that Fig. 3 provides for the embodiment of the present invention；
The circuit diagram of a kind of electrodynamic valve that Fig. 4 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As it is shown in figure 1, the embodiment of the present invention provides a kind of phase sequence adjusting apparatus, including: three-phase power input end 10, three-phase power output end 20, phase sequence recognition unit 30 and switch control unit 40；Three-phase power input end 10 is connected with three-phase power output end 20, and phase sequence recognition unit 30 is connected to three-phase power input end 10, and phase sequence recognition unit 30 is for identifying the phase sequence of three-phase power input end 10；Switch control unit 40 includes controlling module 41 and switch module 42, control module 41 and be connected to phase sequence recognition unit 30, switch module 42 includes the first switches set 421 and second switch group 422, first switches set 421 adopts positive phase sequence connection to access between three-phase power input end 10 and three-phase power output end 20, and second switch group 422 adopts negative-phase sequence connection to access between three-phase power input end 10 and three-phase power output end 20；Control module 41 for when phase sequence recognition unit 30 identifies three-phase power input end 10 for positive phase sequence, control the first switches set 421 and be in connected state, and second switch group 422 is off, when phase sequence recognition unit 30 identifies three-phase power input end 10 for negative-phase sequence, control the first switches set 421 to be off, and second switch group 422 is in connected state.
Wherein, three-phase power input end 10 is for being connected with three phase mains, phase sequence recognition unit is capable of identify that the power phase of three-phase power input end 10, there is the multiple Circuits System can as phase sequence recognition unit 30 at present, such as, waveform after can detecting, by single-chip microcomputer, the process that three-phase power input end is arbitrarily biphase identifies phase sequence, it would however also be possible to employ phase sequence relay XKA identifies the phase sequence of three-phase power input end 10；When phase sequence recognition unit 30 recognizes the phase sequence of three-phase power input end 10, a phase sequence identification signal can be sent, the control module 41 being connected to phase sequence recognition unit 30 can correspondingly control switch module 42 according to phase sequence identification signal, and switch control unit 40 can adopt catalyst or relay etc..
The embodiment of the present invention is illustrated below by the operation principle of phase sequence adjusting apparatus.The three-phase power input end 10 of phase sequence adjusting apparatus is for being connected with three phase mains, phase sequence recognition unit 30 identifies power phase, when three-phase power input end 10 is positive phase sequence, control module controls the first switches set 421 and is in connected state, second switch group 422 is off, owing to the first switches set 421 adopts positive phase sequence connection to access between three-phase power input end 10 and three-phase power output end 20, therefore three-phase power input end 10 and three-phase power output end 20 are identical phase sequence, are positive phase sequence；When three-phase power input end 10 is negative-phase sequence, control module 41 controls the first switches set 421 and is off, second switch group 422 is in connected state, owing to second switch group 422 adopts negative-phase sequence connection to access between three-phase power input end 10 and three-phase power output end 20, therefore three-phase power output end 20 there occurs commutation relative to three-phase power input end 10, and three-phase power output end 20 is positive phase sequence；For motor, three-phase power output end 20 is connected to the three phase mains link of motor body, thus constituting the motor with phase sequence adjusting apparatus, if presetting motor for rotating forward, three-phase power output end 20 then adopt positive phase sequence connection be connected to the three phase mains link of motor body, when three-phase power input end 10 is positive phase sequence, also it is positive phase sequence due to three-phase power output end 20, therefore motor rotates forward, if power phase generation commutation, when making three-phase power input end 10 for negative-phase sequence, owing to three-phase power output end 20 is positive phase sequence, therefore motor still rotates forward；If presetting motor for reversion, then three-phase power output end 20 to adopt negative-phase sequence connection be connected to the three phase mains link of motor body, by above-mentioned analysis, no matter three-phase power input end 10 is positive phase sequence or negative-phase sequence, three-phase power output end 20 is positive phase sequence, again owing to three-phase power output end 20 adopts negative-phase sequence connection to be connected to motor body, then motor reversal.
A kind of phase sequence adjusting apparatus that the embodiment of the present invention provides, power phase by phase sequence recognition unit identification three-phase power input end, and it is positive phase sequence or negative-phase sequence according to power phase, the control module making switch control unit controls switch module accordingly, the power phase making no matter three-phase power input end is positive phase sequence or negative-phase sequence, the phase sequence of three-phase power output end is positive phase sequence, so it can be avoided that cause the phase sequence of three-phase power output end that commutation also occurs when non-default commutation occurs the power phase of three-phase power input end, the phase sequence making three-phase power output end keeps positive phase sequence；When phase sequence adjusting apparatus accesses between three phase mains and equipment, default phase sequence connection can be adopted to be connected to the three phase mains link of equipment three-phase power output end as required, make the three phase mains link of equipment for presetting phase sequence, wherein presetting phase sequence can be positive phase sequence or negative-phase sequence, if during the power phase generation commutation of three-phase power input end, the phase sequence of three-phase power output end is still positive phase sequence, then the phase sequence of the three phase mains link of equipment still keeps former default phase sequence, and therefore equipment remains to arrange normal operation according to former.
Specifically, in conjunction with shown in Fig. 1 and Fig. 2, first switches set 421 includes the first switch contact 4211 and second switch contact 4212, first switch contact 4211 is connected between a phase of three-phase power input end 10 and a phase of three-phase power output end 20, and second switch contact 4212 is connected between another phase of three-phase power input end 10 and another phase of three-phase power output end 20；Second switch group 422 includes the 3rd switch contact 4221 and the 4th switch contact 4222,3rd switch contact 4221 is connected between a phase of three-phase power input end 10 and another phase of three-phase power output end 20, and the 4th switch contact 4222 is connected between another phase of three-phase power input end 10 and a phase of three-phase power output end 20.Wherein, the wherein biphase of three-phase power input end 10 is selected to be connected to the wherein biphase of three-phase power output end 20 respectively through above-mentioned switch contact, and three-phase power input end 10 is directly connected to mutually with other the one of three-phase power output end 20, use four switch contacts just can realize the phase sequence control of three-phase power input end 10 and three-phase power output end 20, wiring is simple, specific works principle is: when phase sequence recognition unit 30 recognizes three-phase power input end 10 for positive phase sequence, control module 41 controls the first switch contact 4211 and second switch contact 4212 is in connected state, 3rd switch contact 4221 and the 4th switch contact 4222 are off, now three-phase power input end 10 and three-phase power output end 20 are identical phase sequence, it is positive phase sequence；When phase sequence recognition unit 30 recognizes three-phase power input end 10 for negative-phase sequence, control module 41 controls the first switch contact 4211 and second switch contact 4212 is off, 3rd switch contact 4221 and the 4th switch contact 4222 are in connected state, now three-phase power output end 20 there occurs commutation relative to three-phase power input end 10, and three-phase power output end 20 is positive phase sequence.
Specifically, in conjunction with shown in Fig. 1 and Fig. 2, switch control unit 40 is auxiliary reclay KA, control the coil that module 41 is auxiliary reclay KA, the first switch contact 4211 of switch module 42, second switch contact the 4212, the 3rd switch contact 4221 and first normally-closed contact of the 4th switch contact 4222 respectively auxiliary reclay KA, the second normally-closed contact, the first normally opened contact and the second normally opened contact；The coil of auxiliary reclay KA is connected in a branch road of phase sequence recognition unit 30, when phase sequence recognition unit 30 identifies three-phase power input end 10 for positive phase sequence, one branch road is in off state, when phase sequence recognition unit 30 identifies three-phase power input end 10 for negative-phase sequence, a branch road is in connected state.nullSwitch control unit 40 can adopt catalyst or relay etc.，General control circuit adopts relay more，Wherein，Auxiliary reclay KA is in relay protection and automatic control system，To increase quantity and the capacity of contact，It is used for transmitting M signal in control circuit，Auxiliary reclay is widely used，It is convenient to connect，Utilize first normally-closed contact of auxiliary reclay KA、Second normally-closed contact、First normally opened contact and the second normally opened contact realize the phase sequence adjustment of three-phase power output end 20，Specific works principle is: when phase sequence recognition unit 30 recognizes three-phase power input end 10 for positive phase sequence，One branch road at the coil place of auxiliary reclay KA is open circuit，Then the coil of auxiliary reclay KA is not powered on，First normally-closed contact and second normally-closed contact of auxiliary reclay KA are kept closed，And first normally opened contact and the second normally opened contact remain off，Now three-phase power output end 20 is positive phase sequence；When phase sequence recognition unit 30 recognizes three-phase power input end 10 for negative-phase sequence, one branch road at the coil place of auxiliary reclay KA is path, the then coil electricity of auxiliary reclay KA, now first normally-closed contact of auxiliary reclay KA and the second normally-closed contact disconnect, first normally opened contact and the second normally opened contact Guan Bi, making three-phase power output end 20 there occurs commutation relative to three-phase power input end 10, three-phase power output end 20 is positive phase sequence.
Specifically, in conjunction with shown in Fig. 1 and Fig. 2, phase sequence recognition unit 30 is phase sequence relay XKA, phase sequence relay XKA includes normally open contact 31, normally open contact 31, for being off when phase sequence relay XKA identifies three-phase power input end 10 for positive phase sequence, is in connected state when phase sequence relay XKA identifies three-phase power input end 10 for negative-phase sequence；Control module 41 and the normally open contact 31 of switch control unit 40 are connected into loop.There is the multiple Circuits System can as phase sequence recognition unit 30 at present, such as, waveform after can detecting, by single-chip microcomputer, the process that three-phase power input end 10 is arbitrarily biphase identifies phase sequence, phase sequence relay XKA can also be adopted as phase sequence recognition unit 30, wherein, phase sequence relay XKA is adopted to identify the phase sequence of three-phase power input end 10, the phase sequence of three-phase power input end 10 just can be identified by the circuit without designing complexity, and embodiment is simple and convenient.nullWhen phase sequence relay XKA recognizes three-phase power input end 10 for positive phase sequence，The normally open contact 31 of phase sequence relay XKA remains off，The loop that the control module 41 of switch control unit 40 is in series with normally open contact 31 is in off state，When phase sequence relay XKA recognizes three-phase power input end 10 for negative-phase sequence，Phase sequence relay XKA will trigger normally open contact 31 action，Normally open contact 31 closes，Make the circuit communication that the control module 41 of switch control unit 40 is in series with normally open contact 31，Control module 41 and can correspondingly control the first switches set 421 of switch module 42 and the state of second switch group 422 according to the off state in above-mentioned loop or connected state，When above-mentioned loop is in off state，First switches set 421 is in connected state，Second switch group 422 is off，Three-phase power input end 10 and three-phase power output end 20 are identical phase sequence，It is positive phase sequence，When above-mentioned loop is in connected state，First switches set 421 is off，Second switch group 422 is in connected state，Now three-phase power output end 20 there occurs commutation relative to three-phase power input end 10，Three-phase power output end 20 is positive phase sequence.It should be noted that when switch control unit 40 is auxiliary reclay KA, an above-mentioned branch road is and controls the loop that module 41 is connected into normally open contact 31.
Further, above-mentioned phase sequence adjusting apparatus also includes: fuse FU, and three-phase power input end 10 is connected to phase sequence recognition unit 30 by fuse FU.Wherein, fuse FU is after exceeding setting a period of time according to electric current, makes Melt molten with the heat that himself produces, so that a kind of electrical equipment that circuit disconnects, it, as the protector of short circuit and overcurrent, is one of wide variety of protection device.
nullA kind of phase sequence adjusting apparatus that the embodiment of the present invention provides，Power phase by phase sequence recognition unit identification three-phase power input end，And it is positive phase sequence or negative-phase sequence according to power phase，The control module making switch control unit controls switch module accordingly，The power phase making no matter three-phase power input end is positive phase sequence or negative-phase sequence，The phase sequence of three-phase power output end is positive phase sequence，When adopting default phase sequence connection to be connected with three-phase power output end by the three phase mains link of equipment，Namely the three phase mains link of equipment is for presetting phase sequence，Wherein presetting phase sequence can be positive phase sequence or negative-phase sequence，If during the power phase generation commutation of three-phase power input end，The phase sequence of three-phase power output end is still positive phase sequence，Then the phase sequence of the three phase mains link of equipment still keeps former default phase sequence，Therefore equipment remains to arrange normal operation according to former.
As it is shown on figure 3, the embodiment of the present invention also provides for a kind of motor, including: motor body 50 and above-mentioned phase sequence adjusting apparatus；Motor body 50 includes three phase mains link 51, and three phase mains link 51 is connected with the three-phase power output end 20 of phase sequence adjusting apparatus.
Wherein, composition and the operation principle of phase sequence adjusting apparatus are same as the previously described embodiments, do not repeat them here.The three phase mains link 51 of motor body 50 is connected with the three-phase power output end 20 of phase sequence adjusting apparatus, constitute a kind of motor with phase sequence adjusting apparatus, if presetting motor for rotating forward, positive phase sequence connection is then adopted to be connected with the three phase mains link 51 of motor body 50 by three-phase power output end 20, owing to no matter three-phase power input end 10 is positive phase sequence or negative-phase sequence, three-phase power output end 20 is positive phase sequence, therefore the three phase mains link 51 of motor body 50 is positive phase sequence, and motor rotates forward according to default；If presetting motor for reversion, negative-phase sequence connection is then adopted to be connected with the three phase mains link 51 of motor body 50 by three-phase power output end 20, owing to no matter three-phase power input end is positive phase sequence or negative-phase sequence, three-phase power output end is positive phase sequence, therefore the three phase mains link 51 of motor body 50 is negative-phase sequence, and motor reverses according to default.
Further, above-mentioned motor also includes: the first catalyst KM1 and the second catalyst KM2；The positive phase sequence connection that adopts the normally opened main contacts of the first catalyst KM1 accesses between three-phase power output end 20 and the three phase mains link 51 of motor body, and the normally opened main contacts of the second catalyst KM2 adopts negative-phase sequence connection to access between three-phase power output end 20 and the three phase mains link 51 of motor body 50；Motor body 50 includes the first signaling switch 52 and secondary signal switch 53；The coil of first signaling switch the 52, first catalyst KM1 and the normally closed auxiliary contact of the second catalyst KM2 be connected on three-phase power input end 10 arbitrarily biphase between constitute first control circuit；The normally closed auxiliary contact of the secondary signal switch coil of the 53, second catalyst KM2 and the first catalyst KM1 be connected on three-phase power input end 10 arbitrarily biphase between constitute second control circuit.nullAccording to above-mentioned embodiment，Motor can pass through the conversion of control realization forward and reverse，Wherein，The coil of the coil of the first catalyst KM1 and normally closed auxiliary contact and the second catalyst KM2 and normally closed auxiliary contact adopt interlocking connection access three-phase power input end 10 arbitrarily biphase between，Specific works principle is as follows: when to make motor rotate forward，Trigger the first signaling switch 52，First control circuit is made to turn on，The coil electricity of the first catalyst KM1，The normally opened main contacts Guan Bi of the first catalyst KM1，Make three-phase power output end 20 by connecting between normally opened main contacts and the three phase mains link 51 of motor body 50 of the first catalyst KM1，Owing to the normally opened main contacts of the first catalyst KM1 adopts positive phase sequence connection to access between three-phase power output end 20 and the three phase mains link 51 of motor body 50，Therefore the three phase mains link 51 of motor body 50 is positive phase sequence，Motor rotates forward，The normally closed auxiliary contact of the first catalyst KM1 is made to disconnect during the coil electricity of other first catalyst KM1，Ensure that the coil of the second catalyst KM2 will not be energized，Thus avoiding the normally opened main contacts of the second catalyst KM2 to close，And then ensure that motor is according to presetting normal rotating forward；nullWhen to make motor reversal，Trigger secondary signal switch 53，Second control circuit is made to turn on，The coil electricity of the second catalyst KM2，The normally opened main contacts Guan Bi of the second catalyst KM2，Make three-phase power output end 20 by connecting between normally opened main contacts and the three phase mains link 51 of motor body 50 of the second catalyst KM2，Owing to the normally opened main contacts of the second catalyst KM2 adopts negative-phase sequence connection to access between three-phase power output end 20 and the three phase mains link 51 of motor body 50，Therefore the three phase mains link 51 of motor body 50 is negative-phase sequence，Motor reversal，The normally closed auxiliary contact of the second catalyst KM2 is made to disconnect during the coil electricity of other second catalyst KM2，Ensure that the coil of the first catalyst KM1 will not be energized，Thus avoiding the normally opened main contacts of the first catalyst KM1 to close，And then ensure that motor is according to presetting normal reversion.
Above-mentioned motor also includes: circuit breaker Q F, and one end of circuit breaker Q F is connected to three-phase power input end 10, and the other end of circuit breaker Q F is used for connecting three phase mains L1, L2, L3.Wherein, chopper is commonly called as air switch, when circuit be short-circuited, the fault such as heavy overload, decompression time, it is possible to automatic shutoff circuit, play the effect of protection circuit, apply wide.
A kind of motor that the embodiment of the present invention provides, it is connected with phase sequence adjusting apparatus by motor body, constitute a kind of motor with phase sequence adjusting apparatus, power phase by the phase sequence recognition unit identification three-phase power input end of phase sequence adjusting apparatus, and it is positive phase sequence or negative-phase sequence according to power phase, the control module making switch control unit controls switch module accordingly, the power phase making no matter three-phase power input end is positive phase sequence or negative-phase sequence, the phase sequence of three-phase power output end is positive phase sequence, so it can be avoided that cause the phase sequence of three-phase power output end that commutation also occurs when non-default commutation occurs the power phase of three-phase power input end, the phase sequence making three-phase power output end keeps positive phase sequence；Default phase sequence connection is adopted to be connected with the three phase mains link of motor body by three-phase power output end, then the three phase mains link of motor body is for presetting phase sequence, wherein presetting phase sequence can be positive phase sequence or negative-phase sequence, if during the power phase generation commutation of three-phase power input end, the phase sequence of three-phase power output end is still positive phase sequence, then the phase sequence of the three phase mains link of motor body still keeps former default phase sequence, and therefore motor remains to arrange normal operation according to former.
As shown in Figure 4, the embodiment of the present invention also provides for a kind of electrodynamic valve, including: motor, motor includes motor body 50 and above-mentioned phase sequence adjusting apparatus；Motor body 50 includes three phase mains link 51, and three phase mains link 51 is connected with the three-phase power output end 20 of phase sequence adjusting apparatus；Motor also includes the first catalyst KM1 and the second catalyst KM2；The positive phase sequence connection that adopts the normally opened main contacts of the first catalyst KM1 accesses between three-phase power output end 20 and the three phase mains link 51 of motor body 50, and the normally opened main contacts of the second catalyst KM2 adopts negative-phase sequence connection to access between three-phase power output end 20 and the three phase mains link 51 of motor body 50；Motor body 50 includes the first signaling switch 52 and secondary signal switch 53；The coil of first signaling switch the 52, first catalyst KM1 and the normally closed auxiliary contact of the second catalyst KM2 be connected on three-phase power input end 10 arbitrarily biphase between constitute first control circuit；The normally closed auxiliary contact of the secondary signal switch coil of the 53, second catalyst KM2 and the first catalyst KM1 be connected on three-phase power input end 10 arbitrarily biphase between constitute second control circuit；First signaling switch 52 is the start signal switch of electrodynamic valve, and secondary signal switch 53 is the shutdown signal switch of electrodynamic valve, and when electrodynamic valve is opened, the first signaling switch 52 is in connected state, and when electrodynamic valve cuts out, secondary signal switch 53 is in connected state；Electrodynamic valve also includes valve and opens limit switch 61 and valve cut out limit switch 62, limit switch 61 opened by valve and valve cuts out limit switch 62 and is normally closed switch, valve is opened limit switch 61 and is connected in described first control circuit, and valve cuts out limit switch 62 and is connected in second control circuit.
Electrodynamic valve is exactly briefly with electronic actuator control valves door, thus realizing the on an off of valve, the driving of electrodynamic valve is usually with motor, when motor rotates forward, electrodynamic valve is opened, when motor reversal, electrodynamic valve cuts out, wherein the rotating forward of motor and the operation principle of reversion are same as the previously described embodiments, do not repeat them here, in electrodynamic valve opening process, when electrodynamic valve is opened into preset strokes, valve is opened limit switch 61 and is disconnected, the coil blackout of the first catalyst KM1, the normally opened main contacts making the first catalyst KM1 disconnects, motor stops rotating forward, electrodynamic valve stops opening；In electrodynamic valve closing process, when electrodynamic valve cuts out to preset strokes, valve cuts out limit switch 62 and disconnects, and the coil blackout of the second catalyst KM2 makes the normally opened main contacts of the second catalyst KM2 disconnect, and motor stops reversion, electrodynamic valve phase down.Limit switch 61 opened by valve and valve cuts out limit switch 62 and the opening and closing of electrodynamic valve are played the effect of restriction stroke, and electrodynamic valve is had protective effect.
A kind of electrodynamic valve that the embodiment of the present invention provides, employing motor drives, its motor is with phase sequence adjusting apparatus, power phase by the phase sequence recognition unit identification three-phase power input end of phase sequence adjusting apparatus, and it is positive phase sequence or negative-phase sequence according to power phase, the control module making switch control unit controls switch module accordingly, the power phase making no matter three-phase power input end is positive phase sequence or negative-phase sequence, the phase sequence of three-phase power output end is positive phase sequence, so it can be avoided that cause the phase sequence of three-phase power output end that commutation also occurs when non-default commutation occurs the power phase of three-phase power input end, the phase sequence making three-phase power output end keeps positive phase sequence；Default phase sequence connection is adopted to be connected with the three phase mains link of motor body by three-phase power output end, then the three phase mains link of motor body is for presetting phase sequence, wherein presetting phase sequence can be positive phase sequence or negative-phase sequence, if during the power phase generation commutation of three-phase power input end, the phase sequence of three-phase power output end is still positive phase sequence, then the phase sequence of the three phase mains link of motor body still keeps former default phase sequence, therefore motor remains to arrange normal operation according to former, say, that electrodynamic valve still arranges normal operation according to former.
The embodiment of the present invention also provides for a kind of automatic filter, including: above-mentioned electrodynamic valve, the quantity of electrodynamic valve is at least one.
Automatic filter be by control electrodynamic valve unlatching, close carry out automatic fitration, cleaning, dirt eliminating function, wherein, structure and the operation principle of electrodynamic valve are same as the previously described embodiments, do not repeat them here.
A kind of automatic filter that the embodiment of the present invention provides, including electrodynamic valve, wherein electrodynamic valve adopts motor to drive, motor is with phase sequence adjusting apparatus, power phase by the phase sequence recognition unit identification three-phase power input end of phase sequence adjusting apparatus, and it is positive phase sequence or negative-phase sequence according to power phase, the control module making switch control unit controls switch module accordingly, the power phase making no matter three-phase power input end is positive phase sequence or negative-phase sequence, the phase sequence of three-phase power output end is positive phase sequence, so it can be avoided that cause the phase sequence of three-phase power output end that commutation also occurs when non-default commutation occurs the power phase of three-phase power input end, the phase sequence making three-phase power output end keeps positive phase sequence；Default phase sequence connection is adopted to be connected with the three phase mains link of motor body by three-phase power output end, then the three phase mains link of motor body is for presetting phase sequence, wherein presetting phase sequence can be positive phase sequence or negative-phase sequence, if during the power phase generation commutation of three-phase power input end, the phase sequence of three-phase power output end is still positive phase sequence, then the phase sequence of the three phase mains link of motor body still keeps former default phase sequence, therefore motor remains to arrange normal operation according to former, say, that the electrodynamic valve of automatic filter still arranges normal operation according to former.
The above; being only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; change can be readily occurred in or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.
Claims (10)
1. a phase sequence adjusting apparatus, it is characterised in that including:
Three-phase power input end, three-phase power output end, phase sequence recognition unit and switch control unit；
Described three-phase power input end is connected with described three-phase power output end, and described phase sequence recognition unit is connected to described three-phase power input end, and described phase sequence recognition unit is for identifying the phase sequence of described three-phase power input end；
Described switch control unit includes controlling module and switch module, described control module is connected to described phase sequence recognition unit, described switch module includes the first switches set and second switch group, described first switches set adopts positive phase sequence connection to access between described three-phase power input end and described three-phase power output end, and described second switch group adopts negative-phase sequence connection to access between described three-phase power input end and described three-phase power output end；
Described control module is for when three-phase power input end described in described phase sequence recognition unit identification is positive phase sequence, control described first switches set and be in connected state, and described second switch group is off, when three-phase power input end described in described phase sequence recognition unit identification is negative-phase sequence, control described first switches set to be off, and described second switch group is in connected state.
2. phase sequence adjusting apparatus according to claim 1, it is characterised in that
Described first switches set includes the first switch contact and second switch contact, described first switch contact is connected between a phase of described three-phase power input end and a phase of described three-phase power output end, and described second switch contact is connected between another phase of described three-phase power input end and another phase of described three-phase power output end；
Described second switch group includes the 3rd switch contact and the 4th switch contact, described 3rd switch contact is connected between a phase of described three-phase power input end and another phase of described three-phase power output end, and described 4th switch contact is connected between another phase of described three-phase power input end and a phase of described three-phase power output end.
3. phase sequence adjusting apparatus according to claim 2, it is characterised in that
Described switch control unit is auxiliary reclay, described control module is the coil of described auxiliary reclay, described first switch contact, described second switch contact, described 3rd switch contact and the first normally-closed contact of described 4th switch contact respectively described auxiliary reclay, the second normally-closed contact, the first normally opened contact and the second normally opened contact；
The coil of described auxiliary reclay is connected in a branch road of described phase sequence recognition unit, when three-phase power input end described in described phase sequence recognition unit identification is positive phase sequence, a described branch road is in off state, when three-phase power input end described in described phase sequence recognition unit identification is negative-phase sequence, a described branch road is in connected state.
4. phase sequence adjusting apparatus as claimed in any of claims 1 to 3, it is characterised in that
Described phase sequence recognition unit is phase sequence relay, described phase sequence relay includes normally open contact, described normally open contact, for being off when three-phase power input end described in described phase sequence relay identification is positive phase sequence, is in connected state when three-phase power input end described in described phase sequence relay identification is negative-phase sequence；
The described control module of described switch control unit and described normally open contact are connected into loop.
5. phase sequence adjusting apparatus according to claim 1, it is characterised in that also include:
Fuse, described three-phase power input end is connected to described phase sequence recognition unit by described fuse.
6. a motor, it is characterised in that including:
Motor body and the phase sequence adjusting apparatus as described in any one in claim 1 to 5；
Described motor body includes three phase mains link, and described three phase mains link is connected with the described three-phase power output end of described phase sequence adjusting apparatus.
7. motor according to claim 6, it is characterised in that also include:
First catalyst and the second catalyst；
The positive phase sequence connection that adopts the normally opened main contacts of described first catalyst accesses between described three-phase power output end and the described three phase mains link of described motor body, and the normally opened main contacts of described second catalyst adopts negative-phase sequence connection to access between described three-phase power output end and the described three phase mains link of described motor body；
Described motor body includes the first signaling switch and secondary signal switch；
Described first signaling switch, the coil of described first catalyst and the normally closed auxiliary contact of described second catalyst be connected on described three-phase power input end arbitrarily biphase between constitute first control circuit；
Described secondary signal switch, the coil of described second catalyst and the normally closed auxiliary contact of described first catalyst be connected on described three-phase power input end arbitrarily biphase between constitute second control circuit.
8. the motor according to claim 6 or 7, it is characterised in that also include:
Chopper, one end of described chopper is connected to described three-phase power input end, and the other end of described chopper is used for connecting three phase mains.
9. an electrodynamic valve, it is characterised in that including:
Motor as claimed in claim 7 or 8；
Described first signaling switch is the start signal switch of described electrodynamic valve, the shutdown signal that described secondary signal switch is described electrodynamic valve switchs, when described electrodynamic valve is opened, described first signaling switch is in connected state, when described electrodynamic valve cuts out, described secondary signal switch is in connected state；
Described electrodynamic valve also includes valve and opens limit switch and valve cut out limit switch, limit switch opened by described valve and described valve cuts out limit switch and is normally closed switch, described valve is opened limit switch and is connected in described first control circuit, and described valve cuts out limit switch and is connected in described second control circuit.
10. an automatic filter, it is characterised in that including:
Electrodynamic valve as claimed in claim 9, the quantity of described electrodynamic valve is at least one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610318144.0A CN105811391A (en) | 2016-05-12 | 2016-05-12 | Phase sequence adjustment apparatus, motor, electrically operated valve and automatic filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610318144.0A CN105811391A (en) | 2016-05-12 | 2016-05-12 | Phase sequence adjustment apparatus, motor, electrically operated valve and automatic filter |
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| CN105811391A true CN105811391A (en) | 2016-07-27 |
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| CN201610318144.0A Pending CN105811391A (en) | 2016-05-12 | 2016-05-12 | Phase sequence adjustment apparatus, motor, electrically operated valve and automatic filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112875517A (en) * | 2021-01-18 | 2021-06-01 | 牧德科技（北京）有限公司 | Crane direct control belt limiting control module and crane |
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Application publication date: 20160727 |