CN216751353U - Electromagnetic speed regulation circuit system of centrifugal pump set driving motor - Google Patents
Electromagnetic speed regulation circuit system of centrifugal pump set driving motor Download PDFInfo
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- CN216751353U CN216751353U CN202220501041.9U CN202220501041U CN216751353U CN 216751353 U CN216751353 U CN 216751353U CN 202220501041 U CN202220501041 U CN 202220501041U CN 216751353 U CN216751353 U CN 216751353U
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Abstract
The utility model discloses an electromagnetic speed regulation circuit system of a centrifugal pump set driving motor, which comprises a power supply circuit, a centrifugal pump set stator and a rotor matched with the centrifugal pump set stator, wherein the centrifugal pump set stator is provided with a power winding and a control winding, and the power winding is connected with the power supply circuit; the control winding is provided with a lug post assembly, the control winding is detachably connected with the frequency converter through the lug post assembly, and the frequency converter is connected with the power supply circuit or the power supply. The utility model provides a speed regulation circuit for a centrifugal pump set stator, wherein a power winding and a control winding are arranged on the centrifugal pump set stator, the control winding is regulated and controlled through a frequency converter, and therefore the purposes of double-fed operation, brushless operation and speed regulation control of a centrifugal pump are achieved.
Description
Technical Field
The utility model relates to the field of centrifugal pumps, in particular to an electromagnetic speed regulation circuit system of a driving motor of a centrifugal pump set.
Background
The centrifugal pump is a universal mechanical device which is widely applied in various departments of national economy, the power consumption of the pump accounts for about 20% of the total generated energy, and the power consumption accounts for a large proportion, so that the development and optimization of the centrifugal pump are important directions for energy conservation and emission reduction development. Up to now, the pump design process is separated from the pumping system design of the specific application project, and the efficient matching with the system pipeline characteristics is difficult. Particularly, in a system consisting of a plurality of pumps in engineering, the problem of operation of the pumps deviating from design working conditions is particularly prominent, so that the efficiency of the pumps is greatly reduced, the system is unstable, and the unit vibrates violently to endanger the safety of the system. The traditional speed regulation method of the centrifugal pump set is to use a valve and a baffle plate to regulate the flow, and although the speed regulation of the centrifugal pump is realized, a large amount of electric energy is wasted. The centrifugal pump is driven by a circuit, so the design of the centrifugal pump with the speed regulating circuit has important significance, and has important significance for realizing the aims of energy conservation, emission reduction and the like.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide an electromagnetic speed regulation circuit system of a driving motor of a centrifugal pump set, and provides a speed regulation circuit of a stator of the centrifugal pump set.
The purpose of the utility model is realized by the following technical scheme:
an electromagnetic speed regulation circuit system of a driving motor of a centrifugal pump set comprises a power supply circuit, a centrifugal pump set stator and a rotor centrifugal pump set stator matched with the centrifugal pump set stator. The centrifugal pump set stator is provided with a power winding and a control winding, and the power winding is connected with a power supply circuit; the control winding is provided with a lug post assembly, the control winding is detachably connected with the frequency converter through the lug post assembly, and the frequency converter is connected with the power supply circuit or the power supply.
In order to better implement the utility model, the power winding comprises a first power winding line, a second power winding line and a third power winding line, the control winding comprises a first control winding line, a second control winding line and a third control winding line, and a switch is arranged between the first control winding line and the second control winding line of the control winding.
Preferably, the terminal assembly includes three terminals, and the three terminals are respectively connected to the first control winding circuit, the second control winding circuit, and the third control winding circuit.
Preferably, the utility model further comprises a sliding resistor, wherein the sliding resistor is detachably connected with the three binding posts of the binding post assembly correspondingly.
Preferably, the utility model further comprises a power supply which is detachably and correspondingly connected with the three binding posts of the binding post assembly.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
the utility model provides a speed regulation circuit for a stator of a centrifugal pump set, wherein a power winding and a control winding are arranged on the stator of the centrifugal pump set, the control winding is regulated and controlled through a frequency converter, the purposes of double-fed operation, brushless operation and speed regulation control of a centrifugal pump are achieved, meanwhile, a terminal assembly is arranged on the control winding, the frequency converter, a sliding resistor and an inverter can be selectively plugged, the functional application and the application scene of the centrifugal pump are expanded, the purpose of speed regulation of a circuit in the centrifugal pump can be achieved through lower voltage, and the speed regulation circuit has the advantages of novel circuit structure, convenience in operation and control, practical functions and the like.
Drawings
FIG. 1 is a schematic circuit diagram of an embodiment of the present invention used for doubly-fed operation;
FIG. 2 is a schematic diagram of a circuit used as an example of the use of the utility model for asynchronous operation;
fig. 3 is a schematic diagram of a circuit used as an example of the use of the present invention for synchronous operation.
Wherein, the names corresponding to the reference numbers in the drawings are:
1-centrifugal pump set stator, 2-power winding, 3-control winding, 4-terminal post component, 5-frequency converter, 6-switch, 7-sliding resistor and 8-inverter.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
example one
As shown in fig. 1, an electromagnetic speed regulation circuit system for a centrifugal pump set driving motor includes a power supply circuit, a centrifugal pump set stator 1 (i.e., a stator of the centrifugal pump set driving motor), and a rotor (i.e., a rotor of the centrifugal pump set driving motor) matched with the centrifugal pump set stator 1, where the power supply circuit selects an alternating current (the power supply circuit is a relatively high-voltage power supply in this embodiment), and the centrifugal pump set stator 1 generates a magnetic field and drives the rotor to rotate. The power supply circuit is electrically connected with the centrifugal pump set stator 1 (specifically, the power supply circuit is electrically connected with the power winding 2 of the centrifugal pump set stator 1, and the power supply circuit supplies power to the power winding 2 of the centrifugal pump set stator 1); the centrifugal pump set stator 1 is provided with a power winding 2 and a control winding 3 (the power winding 2 and the control winding 3 form a main winding and an auxiliary winding of the centrifugal pump set stator, a rotor of the centrifugal pump can adopt a reluctance type or a cage type rotor with a specific structure), and the power winding 2 is connected with a power supply circuit. The control winding 3 is provided with a terminal post assembly 4, the control winding 3 is detachably connected with a frequency converter 5 through the terminal post assembly 4, the frequency converter 5 is connected with a power supply circuit or a power supply, the frequency converter 5 can carry out frequency conversion and other processing (generally, relatively low voltage) on the power supply circuit or the power supply, and the frequency converter 5 inputs frequency, amplitude and phase current to the control winding 3. Therefore, based on the magnetic field speed regulation principle, the speed regulation control and brushless purpose (compared with the prior art, no need of a slip ring and an electric brush) of adopting a low-power low-voltage frequency converter is realized from the inside of the centrifugal pump by adding the control winding 3 with the different pole number of the power winding 2 on the stator 1 of the centrifugal pump set through the rotor structure. Generally speaking, a special control cabinet can be provided, the frequency converter 5 is placed in the control cabinet (a controller connected with the frequency converter 5 can also be arranged in the control cabinet), the power winding 2 on the stator 1 of the centrifugal pump set is connected with a power supply circuit (i.e. power frequency voltage), the number of pole pairs is Pp, the control winding 3 is connected with the frequency converter 5 (which can be regarded as a frequency conversion power supply or a control power supply, the frequency converter 5 can be supplied with power through an independent power supply or directly through the power supply circuit), the number of pole pairs is Pc, the two sets of windings do not have direct electromagnetic coupling, but indirectly transmit electromagnetic power through the rotor winding, and the rotor adopts a self-closing loop structure. Referring to fig. 1, a frequency converter 5 supplies power to the control winding 3 and can achieve the purposes of double-fed operation and speed regulation control in the centrifugal pump.
According to a preferred embodiment of the present embodiment, the power winding 2 includes a first power winding (i.e., winding a in fig. 1), a second power winding (i.e., winding B in fig. 1) and a third power winding (i.e., winding C in fig. 1), the control winding 3 includes a first control winding (i.e., winding a in fig. 1), a second control winding (i.e., winding B in fig. 1) and a third control winding (i.e., winding C in fig. 1), and a switch 6 is disposed between the first control winding and the second control winding of the control winding 3.
According to a preferred embodiment of the present embodiment, the terminal block assembly 4 includes three terminals, and the three terminals are respectively connected to the first control winding circuit, the second control winding circuit, and the third control winding circuit. The operation requirements of different purposes of a user are realized through a wiring mode of the switch 6 and the three wiring terminals (the first embodiment and the first figure 1 are used for realizing the purposes of double-fed operation and speed regulation control in the centrifugal pump).
Example two
The structure of the embodiment is the same as that of the embodiment, compared with the first embodiment, the embodiment further comprises a sliding resistor 7, referring to fig. 2, the sliding resistor 7 is detachably and correspondingly connected with the three binding posts of the binding post assembly 4, and thus the sliding resistor 7 is connected with the control winding 3, and the purposes of asynchronous operation, self-starting and speed regulation control of a centrifugal pump circuit can be achieved.
EXAMPLE III
The structure of this embodiment is the same as the structure of the embodiment, and compared with the first embodiment, this embodiment further includes a power supply, the power supply is detachably connected with the three terminals of the terminal assembly 4, the power supply may be a dc power supply, and the structure shown in fig. 3 may also be adopted: the power supply source is replaced by an inverter which is connected between the wiring terminal assembly 4 and the power supply circuit, and the switch 6 is closed, so that the purposes of synchronous operation of the centrifugal pump circuit and the like can be achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides a centrifugal pump package driving motor electromagnetism speed governing circuit system, includes supply circuit, centrifugal pump package stator (1) and with centrifugal pump package stator (1) matched with rotor, its characterized in that of centrifugal pump package stator: the centrifugal pump set stator (1) is provided with a power winding (2) and a control winding (3), and the power winding (2) is connected with a power supply circuit; the control winding (3) is provided with a terminal post assembly (4), the control winding (3) is detachably connected with the frequency converter (5) through the terminal post assembly (4), and the frequency converter (5) is connected with a power supply circuit or a power supply.
2. The electromagnetic speed regulation circuit system of the driving motor of the centrifugal pump group according to claim 1, characterized in that: the power winding (2) comprises a first power winding line, a second power winding line and a third power winding line, the control winding (3) comprises a first control winding line, a second control winding line and a third control winding line, and a switch (6) is arranged between the first control winding line and the second control winding line of the control winding (3).
3. The electromagnetic speed regulation circuit system of the driving motor of the centrifugal pump group according to claim 2, characterized in that: the terminal post assembly (4) comprises three terminal posts which are correspondingly connected with the first control winding line, the second control winding line and the third control winding line respectively.
4. The electromagnetic speed regulation circuit system of the driving motor of the centrifugal pump group according to claim 3, characterized in that: the wire harness connector further comprises a sliding resistor (7), and the sliding resistor (7) is detachably connected with the three binding posts of the binding post assembly (4) in a corresponding mode.
5. The electromagnetic speed regulation circuit system of the driving motor of the centrifugal pump group according to claim 3, characterized in that: the power supply is detachably connected with the three binding posts of the binding post assembly (4) in a corresponding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220501041.9U CN216751353U (en) | 2022-03-08 | 2022-03-08 | Electromagnetic speed regulation circuit system of centrifugal pump set driving motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220501041.9U CN216751353U (en) | 2022-03-08 | 2022-03-08 | Electromagnetic speed regulation circuit system of centrifugal pump set driving motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216751353U true CN216751353U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220501041.9U Active CN216751353U (en) | 2022-03-08 | 2022-03-08 | Electromagnetic speed regulation circuit system of centrifugal pump set driving motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216751353U (en) |
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2022
- 2022-03-08 CN CN202220501041.9U patent/CN216751353U/en active Active
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