CN216929897U - High-voltage motor water resistance starting cabinet and cement production line - Google Patents
High-voltage motor water resistance starting cabinet and cement production line Download PDFInfo
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- CN216929897U CN216929897U CN202122832596.XU CN202122832596U CN216929897U CN 216929897 U CN216929897 U CN 216929897U CN 202122832596 U CN202122832596 U CN 202122832596U CN 216929897 U CN216929897 U CN 216929897U
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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
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Abstract
The application relates to a high-voltage motor water resistance starting cabinet and a cement production line, relates to the technical field of high-voltage motor starting, and mainly aims to improve the starting success rate of a motor. The main technical scheme adopted is as follows: high-voltage motor water resistance starts cabinet includes: a water resistance start circuit; a primary loop circuit, wherein the primary loop comprises: the contactor is provided with three alternating current connecting ends, the three alternating current connecting ends of the contactor are respectively a first phase connecting end, a second phase connecting end and a third connecting end, the first connecting end is provided with a first access terminal and a first output terminal, the second phase connecting end is provided with a second access terminal and a second output terminal, the third phase connecting end is provided with a third access terminal and a third output terminal, the first access terminal is electrically connected with the third output terminal, the second access terminal is electrically connected with the first output terminal, and the third access terminal is electrically connected with the second output terminal, so that the starting failure caused by the open circuit of a motor rotor can be avoided.
Description
Technical Field
The application relates to the technical field of high-voltage motor starting, in particular to a high-voltage motor water resistance starting cabinet and a cement production line.
Background
The water resistance starting means that the resistance characteristic of the electrolyte is utilized, and the distance between the polar plates is adjusted to realize the soft starting of the motor or the speed-adjusting soft starting device is used for a large and medium high-voltage squirrel-cage (winding type) alternating current asynchronous motor or an asynchronously-started high-voltage synchronous motor to perform the step-down starting. The motor started by the device has the soft starting characteristics of small and constant starting current and gradually increased torque, has no current impact and mechanical impact in the starting process, has little influence on a power grid during starting, has no electromagnetic interference, is an ideal substitute product for a starting reactor and an auto-coupling voltage reduction starter, and has the advantages of simple operation, no maintenance, no harmonic pollution and the like compared with a high-voltage frequency conversion soft starter.
In electric control circuit, the contactor is essential electrical components, and the water resistance starting cabinet starts the short circuit contactor that finishes and connects for the star type, and the contactor is in the use, and the default phase easily appears in its main contact part, and in motor starting process, if the contactor default phase appears, then the rotor that can lead to the motor opens a way, causes the motor start failure.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the application provides a high-voltage motor water resistance starting cabinet and cement production line, and the main aim is to improve the starting success rate of motors.
In order to achieve the above purpose, the embodiments of the present application mainly provide the following technical solutions:
on the one hand, the embodiment of this application provides a high-voltage motor water resistance start cabinet, includes:
a water resistance start circuit;
a primary loop circuit, wherein the primary loop comprises: the contactor is provided with three alternating current connecting ends, the three alternating current connecting ends of the contactor are respectively a first phase connecting end, a second phase connecting end and a third phase connecting end, the first phase connecting end is provided with a first access terminal and a first outgoing terminal, the second phase connecting end is provided with a second access terminal and a second outgoing terminal, the third phase connecting end is provided with a third access terminal and a third outgoing terminal, the first access terminal is electrically connected with the third outgoing terminal, the second access terminal is electrically connected with the first outgoing terminal, and the third access terminal is electrically connected with the second outgoing terminal.
The purpose and the technical problem to be solved by the embodiments of the present application can be further achieved by the following technical measures.
Optionally, the aforementioned high-voltage motor water resistance starting cabinet further includes:
and the switching control unit is used for respectively controlling the access of the water resistance starting circuit or the main loop circuit.
Optionally, in the aforementioned high-voltage motor water resistance starting cabinet, three ac input connection ends of the switching control unit are connected to the first outgoing terminal, the second outgoing terminal, and the third outgoing terminal of the contactor.
In another aspect, embodiments of the present application provide a cement production line, including:
a three-phase AC motor;
the water resistance starting cabinet for the high-voltage motor provides starting voltage for the three alternating current motors.
The purpose and the technical problem to be solved by the embodiments of the present application can be further achieved by the following technical measures.
Optionally, in the cement production line, the three ac power input ends of the three-phase ac motor are electrically connected to the first output terminal, the second output terminal, and the third output terminal of the contactor of the main circuit of the high-voltage motor water resistance starting cabinet.
Optionally, in the cement production line, the three-phase ac motor is a main motor of a vertical mill.
Borrow by above-mentioned technical scheme, high voltage motor water resistance start cabinet and cement manufacture line that this application technical scheme provided have following advantage at least:
in the technical solution provided in this embodiment, the contactor of the main circuit has three ac electrical connection ends, the three ac electrical connection ends of the contactor are respectively a first phase connection end, a second phase connection end, and a third phase connection end, the first connection end has a first connection terminal and a first connection terminal, the second phase connection end has a second connection terminal and a second connection terminal, the third phase connection end has a third connection terminal and a third connection terminal, the first connection terminal is electrically connected to the third connection terminal, the second connection terminal is electrically connected to the first connection terminal, the third connection terminal is electrically connected to the second connection terminal, when the water resistance starting circuit is in operation, when the water resistance starting circuit is started, the contactor is closed, and the motor is connected to the main circuit, compared with the technical solution in the prior art, because in the contactor, the first connection end is provided with a first access terminal and a first output terminal, the second connection end is provided with a second access terminal and a second output terminal, the third connection end is provided with a third access terminal and a third output terminal, the third output terminal is electrically connected with the first access terminal, the first output terminal is electrically connected with the second access terminal, the second output terminal is electrically connected with the third access terminal, the starting failure caused by the open circuit of the motor rotor can be avoided, and the service life of the motor is prolonged.
The foregoing description is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the embodiments of the present application more clear and can be implemented according to the content of the description, the following detailed description is given with reference to the preferred embodiments of the present application and the accompanying drawings.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic diagram of an operating principle of a water resistance starting cabinet of a high-voltage motor according to an embodiment of the present application.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be noted that, unless otherwise specified, technical terms or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.
Fig. 1 shows an embodiment of a high voltage motor water resistance start-up cabinet provided in the present application, and please refer to fig. 1, where the high voltage motor water resistance start-up cabinet provided in the present application includes:
a water resistance start circuit 10;
a main loop circuit 20, wherein the main loop comprises: the contactor is provided with three alternating current connecting ends, the three alternating current connecting ends of the contactor are respectively a first phase connecting end, a second phase connecting end and a third phase connecting end, the first phase connecting end is provided with a first access terminal and a first output terminal, the second phase connecting end is provided with a second access terminal and a second output terminal, the third phase connecting end is provided with a third access terminal and a third output terminal, the first access terminal is electrically connected with the third output terminal, the second access terminal is electrically connected with the first output terminal, and the third access terminal is electrically connected with the second output terminal.
In the technical solution provided in this embodiment, the contactor of the main circuit has three ac electrical connection ends, the three ac electrical connection ends of the contactor are respectively a first phase connection end, a second phase connection end, and a third phase connection end, the first connection end has a first connection terminal and a first connection terminal, the second phase connection end has a second connection terminal and a second connection terminal, the third phase connection end has a third connection terminal and a third connection terminal, the first connection terminal is electrically connected to the third connection terminal, the second connection terminal is electrically connected to the first connection terminal, the third connection terminal is electrically connected to the second connection terminal, when the water resistance starting circuit is in operation, when the water resistance starting circuit is started, the contactor is closed, and the motor is connected to the main circuit, compared with the technical solution in the prior art, because in the contactor, the first connection end is provided with a first access terminal and a first output terminal, the second connection end is provided with a second access terminal and a second output terminal, the third connection end is provided with a third access terminal and a third output terminal, the third output terminal is electrically connected with the first access terminal, the first output terminal is electrically connected with the second access terminal, the second output terminal is electrically connected with the third access terminal, the starting failure caused by the open circuit of the motor rotor can be avoided, and the service life of the motor is prolonged.
When the high-voltage motor water resistance starting cabinet works as a motor, electrolyte of a water resistance starting circuit is connected in series in a rotor loop of the motor to serve as a resistor, and the resistance value of the series resistor always meets the requirement of the mechanical characteristic of the motor on the series resistance value in the starting process by adjusting the concentration of the electrolyte and changing the distance between two polar plates. When the resistance value of the water resistance starting circuit is gradually reduced and the resistance is close to zero, the three alternating current connecting ends of the main loop circuit contactor are closed, and the motor is started.
In the implementation, the water resistance starting cabinet for the high-voltage motor can further comprise: and the switching control unit controls the water resistance starting circuit to be connected with the motor when the water resistance is connected in series, and controls the circuit of the main loop to be connected with the motor when the resistance is close to zero.
Specifically, the three ac input connection ends of the switching control unit are connected to the first output terminal, the second output terminal, and the third output terminal of the contactor.
Based on above-mentioned embodiment high-voltage motor water resistance start cabinet, the cement manufacture line that this application provided an embodiment, the cement manufacture line that this application provided includes: three-phase alternating current motor 30 and high-voltage motor water resistance starting cabinet.
High-voltage motor water resistance starts cabinet includes:
a water resistance starting circuit 10;
a main loop circuit 20, wherein the main loop comprises: the contactor is provided with three alternating current connecting ends, the three alternating current connecting ends of the contactor are respectively a first phase connecting end, a second phase connecting end and a third phase connecting end, the first connecting end is provided with a first access terminal and a first output terminal, the second phase connecting end is provided with a second access terminal and a second output terminal, the third phase connecting end is provided with a third access terminal and a third output terminal, the first access terminal is electrically connected with the third output terminal, the second access terminal is electrically connected with the first output terminal, and the third access terminal is electrically connected with the second output terminal.
The high-voltage motor water resistance starting cabinet provides starting voltage for the three alternating current motors.
According to the cement production line provided by the embodiment of the scheme, the three-phase alternating current motor is in the starting process, and when a certain phase of the contactor is out of phase, the three-phase alternating current motor can avoid the motor rotor from being opened and the starting failure is caused through the electric connection mode of the contactor in the scheme.
In an implementation, the three-phase alternating current input end of the three-phase alternating current motor is electrically connected with the first output terminal, the second output terminal and the third output terminal of the contactor. For example, a first phase input end of the three-phase ac motor is electrically connected to the first output terminal, a second phase input end of the three-phase ac motor is electrically connected to the second output terminal, and a third phase input end of the three-phase ac motor is electrically connected to the third output terminal. The first phase access end of the three alternating currents is electrically connected with the first access terminal, the second phase access end of the three alternating currents is electrically connected with the second access terminal, and the third phase access end of the three alternating currents is electrically connected with the third access terminal.
In the implementation, the three-phase alternating current motor is a main motor of the vertical mill.
For example, the 4600KW vertical mill main motor uses the high-voltage motor water resistance starting cabinet of this scheme wherein, can effectively avoid big motor to be judged because the contactor lacks the phase and starts the failure in the start-up process, increased motor life.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
It will be appreciated that the relevant features of the devices described above may be referred to one another. In addition, "first", "second", and the like in the above embodiments are for distinguishing the embodiments, and do not represent merits of the embodiments.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the application, various features of the application are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various application aspects. However, the disclosed apparatus should not be construed to reflect the intent: this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this application.
Those skilled in the art will appreciate that the components of the apparatus of the embodiments may be adapted and arranged in one or more arrangements different from the embodiments. The components of the embodiments may be combined into one component and, in addition, they may be divided into a plurality of sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the components of any apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination. The various component embodiments of the present application may be implemented in hardware, or in a combination thereof.
It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or components not listed in a claim. The word "a" or "an" preceding a component or element does not exclude the presence of a plurality of such components or elements. The application can be implemented by means of an apparatus comprising several distinct elements. In the claims enumerating several means, several of these means may be embodied by one and the same item. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
The foregoing is a preferred embodiment of the present application, which is not intended to be limiting in any way, and any simple modifications, equivalent variations and modifications made to the foregoing embodiment according to the technical spirit of the present application are within the scope of the present application.
Claims (6)
1. The utility model provides a high-voltage motor water resistance starts cabinet which characterized in that includes:
a water resistance start circuit;
a primary loop circuit, wherein the primary loop comprises: the contactor, the contactor has three-phase alternating current electricity connecting end, the three-phase alternating current connecting end of contactor is first looks connecting end, second phase connecting end, third phase connecting end respectively, first connecting end has first access terminal, the first terminal that connects out, second phase connecting end has second access terminal, the second connects out the terminal, third phase connecting end has third access terminal, the third connects out the terminal, first access terminal electricity is connected the third connects out the terminal, the second access terminal electricity is connected first access terminal, the third access terminal electricity is connected the second connects out the terminal.
2. The high-voltage motor water resistance start cabinet as recited in claim 1, further comprising:
and the switching control unit is used for respectively controlling the access of the water resistance starting circuit or the main loop circuit.
3. The high voltage motor water resistance start-up cabinet of claim 2,
the three alternating current input connection ends of the switching control unit are connected with the first output terminal, the second output terminal and the third output terminal of the contactor.
4. A cement production line, characterized by comprising:
a three-phase AC motor;
a high voltage motor water resistance start cabinet as claimed in any one of claims 1 to 3 providing a starting voltage for said three phase ac motor.
5. The cement manufacturing line of claim 4,
and the three alternating current input ends of the three-phase alternating current motor are electrically connected with a first output terminal, a second output terminal and a third output terminal of a contactor of a main loop circuit of the high-voltage motor water resistance starting cabinet.
6. The cement manufacturing line of claim 4,
the three-phase alternating current motor is a main motor of the vertical mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122832596.XU CN216929897U (en) | 2021-11-18 | 2021-11-18 | High-voltage motor water resistance starting cabinet and cement production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122832596.XU CN216929897U (en) | 2021-11-18 | 2021-11-18 | High-voltage motor water resistance starting cabinet and cement production line |
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| Publication Number | Publication Date |
|---|---|
| CN216929897U true CN216929897U (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122832596.XU Active CN216929897U (en) | 2021-11-18 | 2021-11-18 | High-voltage motor water resistance starting cabinet and cement production line |
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| CN (1) | CN216929897U (en) |
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- 2021-11-18 CN CN202122832596.XU patent/CN216929897U/en active Active
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