CN104092287A - Draught fan frequency conversion cabinet with fast switch function - Google Patents
Draught fan frequency conversion cabinet with fast switch function Download PDFInfo
- Publication number
- CN104092287A CN104092287A CN201410350232.XA CN201410350232A CN104092287A CN 104092287 A CN104092287 A CN 104092287A CN 201410350232 A CN201410350232 A CN 201410350232A CN 104092287 A CN104092287 A CN 104092287A
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- Prior art keywords
- frequency conversion
- frequency
- loop
- cabinet
- power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The invention discloses a draught fan frequency conversion cabinet with the fast switch function. A frequency conversion loop and a power frequency loop are arranged in a cabinet body and are connected in parallel. The frequency conversion loop is formed by connecting a first frequency conversion breaker, an alternating current electric reactor, a frequency converter, a frequency conversion contact and a second frequency conversion breaker sequentially in series. The power frequency loop is formed by connecting a power frequency breaker, a power frequency contact and a motor protector sequentially in series. The incoming line end of the first frequency conversion breaker and the incoming line end of the power frequency breaker are connected in parallel and are connected to an incoming line terminal. The outgoing line end of the second frequency conversion breaker and the outgoing line end of the motor protector are connected in parallel and are connected to an outgoing line terminal. The frequency conversion loop and the power frequency loop are electrically isolated through the frequency conversion contact and the power frequency contact respectively. Automatic switching between frequency conversion and power frequency is achieved when the frequency converter breaks down, accidents affecting production due to shutting down are avoided, the draught fan frequency conversion cabinet can operate safely and reliably, and maintenance cost is reduced.
Description
Technical field
The present invention relates to a kind of fan frequency conversion cabinet, be specially a kind of fan frequency conversion cabinet with rapid switching function.
Background technology
Current frequency conversion tank all comprises cabinet, on cabinet, be provided with cabinet input terminal and outlet terminal, in cabinet, be provided with the frequency conversion loop being followed in series to form by frequency conversion circuit breaker, AC reactor, frequency converter, frequency conversion contactor, while breaking down in frequency converter loop, generally have two kinds of processing modes:
(1) for the occasion that allows motor across-the-line starting, consider that power frequency for subsequent use directly starts loop.
(2) for the occasion that does not allow motor across-the-line starting, a general another reduced voltage starting cabinet or the soft starting cabinet of joining.Once frequency converter failure, by operating personnel's manual switchover to power frequency operation pattern directly or reduced voltage starting Fan Equipment, or automatically blower fan is switched to power frequency for subsequent use loop by automation control system.
Adopt manual switching or automatic switchover no matter be; all need certain switching, operating time; tens seconds at least; a few minutes at most, this switching time concerning the important equipment as Air Fan of Industrial Boiler is oversize, in process of production; boiler must be carried out certain disorderly closedown handling procedure; the normal operation that this just directly affects boiler, causes certain causality loss, even has influence on the safe operation of relevant device.And in actual production, cause the factor of frequency converter failure much uncertain again, there is again the production equipment of a lot of similar boiler plants all to require the blower fan of coupling to run without interruption continuously, otherwise can cause the larger wasting of resources and stopping accident.
Summary of the invention
In order to solve the technical problem existing in background technology, the present invention proposes a kind of fan frequency conversion cabinet with rapid switching function, while breaking down in frequency conversion loop, can be switched to fast power frequency loop, ensure the continuous continual operation of blower fan, improve productivity effect.
A kind of fan frequency conversion cabinet with rapid switching function that the present invention proposes, comprise cabinet, be symmetricly set on the first cabinet door and the second cabinet door on cabinet, cabinet is provided with input terminal and outlet terminal, inlet wire cable one end is connected to input terminal, the inlet wire cable other end is connected to main power source, motor cable is connected to outlet terminal, series electric motor and blower fan successively in motor cable, in cabinet, be provided with frequency conversion loop and power frequency loop, frequency conversion loop and power frequency loop are connected in parallel, frequency conversion loop is by the first frequency conversion circuit breaker, AC reactor, frequency converter, frequency conversion contactor, the second frequency conversion circuit breaker is followed in series to form, power frequency loop is by power frequency circuit breaker, power frequency contactor, motor protecter is followed in series to form, the end of incoming cables of the first frequency conversion circuit breaker, the end of incoming cables of power frequency circuit breaker also connects and is connected to input terminal, the leading-out terminal of the second frequency conversion circuit breaker, the leading-out terminal of motor protecter also connects and is connected to outlet terminal, electrical isolation is realized by frequency conversion contactor and power frequency contactor respectively in frequency conversion loop and power frequency loop, the first frequency conversion circuit breaker, power frequency circuit breaker is equipped with comprehensive protector of transformer, between the second frequency conversion circuit breaker and motor protecter, be provided with electrical interlocks device.
Preferably, on frequency conversion loop in parallel, power frequency loop and be connected to lightning protection component.
Preferably, in the motor cable between outlet terminal and motor, be serially connected with ferrite bead.
Preferably, the first cabinet door upside or the second cabinet door upside are provided with cooling fan assembly, and the first cabinet door downside or the second cabinet door downside are provided with the dustproof grid of air intake, and cooling fan assembly is powered by fan power supply, the output of fan power supply incoming transport reactor.
Preferably, the first cabinet door, the second cabinet door upside are equipped with cooling fan assembly, and the first cabinet door, the second cabinet door downside are provided with the dustproof grid of air intake, and cooling fan assembly is powered by fan power supply, the output of fan power supply incoming transport reactor.
A kind of fan frequency conversion cabinet with rapid switching function provided by the invention; frequency conversion loop and double loop, power frequency loop are set in cabinet; guarantee in frequency converter failure situation; realizing frequency conversion and power frequency automatically switches; avoid shutting down and cause the accident that impact is produced to occur; realize the safe and reliable operation of fan frequency conversion cabinet, save maintenance cost.Electrical isolation is realized by frequency conversion contactor and power frequency contactor respectively in frequency conversion loop and power frequency loop, and transformer synthesis protector is powered the protection such as short circuit, overload is provided for frequency conversion tank; Electrical interlocks unit protection trip avoidance function is provided by frequency converter, and self is not with defencive function; On frequency conversion loop, adopt AC reactor, ferrite bead to reduce the humorous electromagnetic interference that involves, improved power factor.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of fan frequency conversion cabinet with rapid switching function that the present invention proposes.
Embodiment
As shown in Figure 1, Fig. 1 is the structural representation of a kind of fan frequency conversion cabinet with rapid switching function that the present invention proposes.
With reference to Fig. 1, a kind of fan frequency conversion cabinet with rapid switching function that the present invention proposes, comprise cabinet 1, be symmetricly set on the first cabinet door 2 and the second cabinet door 3 on cabinet 1, cabinet 1 is provided with input terminal 4 and outlet terminal 5, inlet wire cable one end is connected to input terminal 4, the inlet wire cable other end is connected to main power source 6, motor cable is connected to outlet terminal 5, series electric motor 7 and blower fan 8 successively in motor cable, in cabinet 1, be provided with lightning protection component 17, frequency conversion loop and power frequency loop, lightning protection component 17, frequency conversion loop, power frequency loop is connected in parallel, frequency conversion loop is by the first frequency conversion circuit breaker 9, AC reactor 10, frequency converter 11, frequency conversion contactor 12, the second frequency conversion circuit breaker 13 is followed in series to form, power frequency loop is by power frequency circuit breaker 14, power frequency contactor 15, motor protecter 16 is followed in series to form, the end of incoming cables of the first frequency conversion circuit breaker 9, the end of incoming cables of power frequency circuit breaker 14 also connects and is connected to input terminal 4, the leading-out terminal of the second frequency conversion circuit breaker 13, the leading-out terminal of motor protecter 16 also connects and is connected to outlet terminal 5, electrical isolation is realized by frequency conversion contactor 12 and power frequency contactor 15 respectively in frequency conversion loop and power frequency loop, the first frequency conversion circuit breaker 9, power frequency circuit breaker 14 is equipped with comprehensive protector of transformer, between the second frequency conversion circuit breaker 13 and motor protecter 16, be provided with electrical interlocks device.
In specific embodiment, in the motor cable between outlet terminal 5 and motor 7, be serially connected with ferrite bead 18; The first cabinet door 2 upsides are provided with cooling fan assembly 19, the first cabinet doors 2, the second cabinet door 3 downsides are equipped with the dustproof grid 20 of air intake, and cooling fan assembly 19 is powered by fan power supply 21, the output of fan power supply 21 incoming transport reactors 10.
In the present invention, electrical isolation is realized by frequency conversion contactor 12 and power frequency contactor 15 respectively in frequency conversion loop and power frequency loop, and transformer synthesis protector is powered the protection such as short circuit, overload is provided for frequency conversion tank; Electrical interlocks unit protection trip avoidance function is provided by frequency converter, and self is not with defencive function; On frequency conversion loop, adopt AC reactor 10, ferrite bead 18 to reduce the humorous electromagnetic interference that involves, improved power factor.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.
Claims (5)
1. one kind has the fan frequency conversion cabinet of rapid switching function, it is characterized in that, comprise cabinet (1), be symmetricly set on the first cabinet door (2) and the second cabinet door (3) on cabinet (1), cabinet (1) is provided with input terminal (4) and outlet terminal (5), inlet wire cable one end is connected to input terminal (4), the inlet wire cable other end is connected to main power source (6), motor cable is connected to outlet terminal (5), series electric motor (7) and blower fan (8) successively in motor cable, in cabinet (1), be provided with frequency conversion loop and power frequency loop, frequency conversion loop and power frequency loop are connected in parallel, frequency conversion loop is by the first frequency conversion circuit breaker (9), AC reactor (10), frequency converter (11), frequency conversion contactor (12), the second frequency conversion circuit breaker (13) is followed in series to form, power frequency loop is by power frequency circuit breaker (14), power frequency contactor (15), motor protecter (16) is followed in series to form, the end of incoming cables of the first frequency conversion circuit breaker (9), the end of incoming cables of power frequency circuit breaker (14) also connects and is connected to input terminal (4), the leading-out terminal of the second frequency conversion circuit breaker (13), the leading-out terminal of motor protecter (16) also connects and is connected to outlet terminal (5), electrical isolation is realized by frequency conversion contactor (12) and power frequency contactor (15) respectively in frequency conversion loop and power frequency loop, the first frequency conversion circuit breaker (9), power frequency circuit breaker (14) is equipped with comprehensive protector of transformer, between the second frequency conversion circuit breaker (13) and motor protecter (16), be provided with electrical interlocks device.
2. the fan frequency conversion cabinet with rapid switching function according to claim 1, is characterized in that, in parallel frequency conversion loop, power frequency loop and be connected to lightning protection component (17).
3. the fan frequency conversion cabinet with rapid switching function according to claim 1, is characterized in that, in the motor cable between outlet terminal (5) and motor (7), is serially connected with ferrite bead (18).
4. the fan frequency conversion cabinet with rapid switching function according to claim 1, it is characterized in that, the first cabinet door (2) upside or the second cabinet door (3) upside are provided with cooling fan assembly (19), the first cabinet door (2) downside or the second cabinet door (3) downside are provided with the dustproof grid (20) of air intake, cooling fan assembly (19) is by fan power supply (21) power supply, the output of fan power supply (21) incoming transport reactor (10).
5. the fan frequency conversion cabinet with rapid switching function according to claim 1, it is characterized in that, the first cabinet door (2), the second cabinet door (3) upside are equipped with cooling fan assembly (19), the first cabinet door (2), the second cabinet door (3) downside are provided with the dustproof grid (20) of air intake, cooling fan assembly (19) is by fan power supply (21) power supply, the output of fan power supply (21) incoming transport reactor (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410350232.XA CN104092287A (en) | 2014-07-22 | 2014-07-22 | Draught fan frequency conversion cabinet with fast switch function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410350232.XA CN104092287A (en) | 2014-07-22 | 2014-07-22 | Draught fan frequency conversion cabinet with fast switch function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104092287A true CN104092287A (en) | 2014-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410350232.XA Pending CN104092287A (en) | 2014-07-22 | 2014-07-22 | Draught fan frequency conversion cabinet with fast switch function |
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| Country | Link |
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| CN (1) | CN104092287A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018107721A1 (en) * | 2016-12-12 | 2018-06-21 | 北京金风科创风电设备有限公司 | Driving control device and method for yaw electrmotor of wind power generation set |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201270497Y (en) * | 2008-09-25 | 2009-07-08 | 安徽怡能电子科技有限公司 | Variable frequency and power frequency operation main circuit structure for three phase AC electric motor |
| CN201858132U (en) * | 2010-11-09 | 2011-06-08 | 漯河瑞来信节能科技有限公司 | Fan frequency conversion cabinet with variable-frequency and power-frequency switching function |
| CN202150642U (en) * | 2011-08-02 | 2012-02-22 | 唐山盾石电气有限责任公司 | Middle-voltage frequency conversion power frequency transition cabinet |
| CN202652139U (en) * | 2012-06-01 | 2013-01-02 | 濮阳市中和电气有限公司 | Power frequency/variable frequency conversion circuit |
| CN103516291A (en) * | 2013-09-25 | 2014-01-15 | 无锡阿比利德电力科技有限公司 | Motor power frequency/frequency conversion automatic switching device |
-
2014
- 2014-07-22 CN CN201410350232.XA patent/CN104092287A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201270497Y (en) * | 2008-09-25 | 2009-07-08 | 安徽怡能电子科技有限公司 | Variable frequency and power frequency operation main circuit structure for three phase AC electric motor |
| CN201858132U (en) * | 2010-11-09 | 2011-06-08 | 漯河瑞来信节能科技有限公司 | Fan frequency conversion cabinet with variable-frequency and power-frequency switching function |
| CN202150642U (en) * | 2011-08-02 | 2012-02-22 | 唐山盾石电气有限责任公司 | Middle-voltage frequency conversion power frequency transition cabinet |
| CN202652139U (en) * | 2012-06-01 | 2013-01-02 | 濮阳市中和电气有限公司 | Power frequency/variable frequency conversion circuit |
| CN103516291A (en) * | 2013-09-25 | 2014-01-15 | 无锡阿比利德电力科技有限公司 | Motor power frequency/frequency conversion automatic switching device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018107721A1 (en) * | 2016-12-12 | 2018-06-21 | 北京金风科创风电设备有限公司 | Driving control device and method for yaw electrmotor of wind power generation set |
| AU2017332958B2 (en) * | 2016-12-12 | 2019-02-28 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Drive control apparatus and method for yaw motor of wind turbine |
| US10998845B2 (en) | 2016-12-12 | 2021-05-04 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Drive control apparatus and method for yaw motor of wind turbine |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20141008 |