CN218585507U - Transformer teaching experiment device - Google Patents
Transformer teaching experiment device Download PDFInfo
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- CN218585507U CN218585507U CN202222124163.3U CN202222124163U CN218585507U CN 218585507 U CN218585507 U CN 218585507U CN 202222124163 U CN202222124163 U CN 202222124163U CN 218585507 U CN218585507 U CN 218585507U
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Abstract
The utility model discloses a transformer teaching experiment device, include: the single-phase alternating current power supply, single-phase voltage regulation module, single-phase vary voltage module, voltmeter module, ampere meter module, electric power meter module, wherein, the output of single-phase alternating current power supply with the input electricity of single-phase voltage regulation module is connected, the output of single-phase voltage regulation module with the output electricity of single-phase voltage regulation module is connected, the voltmeter module is used for through the wire with the circuit connection that awaits measuring in order to measure voltage, the ampere meter module is arranged in inserting the circuit through the wire series connection with measuring current, the electric power meter module is used for inserting the circuit according to predetermineeing the rule of working a telephone switchboard through the wire in order to measure electric power. By adopting the modularized design, various experimental contents can be built through modules in the device, the innovation capability and the practical capability of students are improved, the designability is strong, and the expandability is strong. The utility model discloses low cost, the experimental method is simple, can realize the capability test of transformer through lower cost.
Description
Technical Field
The utility model belongs to the technical field of teaching experiment device, especially, relate to a transformer teaching experiment device.
Background
A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). In electrical equipment and wireless circuits, the high-voltage power supply is often used for voltage rise and fall, impedance matching, safety isolation and the like. In a generator, an electrical potential can be induced in a coil, whether the coil is moved through a magnetic field or whether the magnetic field is moved through a stationary coil. In both cases, the value of the magnetic flux is constant, but the amount of the magnetic flux linked with the coil varies, which is a principle of mutual induction. A transformer is a device for transforming voltage, current and impedance by using mutual electromagnetic induction. In the practice teaching of students in vocational education, expensive teaching instruments are generally purchased or only theoretical teaching is needed, and students in vocational education are skilled in practical operation at a first line in the later work, so that the students cannot stay in book theory only and need actual operation capacity, and a teaching experiment device with transformer testing capacity and low cost needs to be developed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model aims at providing a transformer teaching experiment device, the device adopt the modularized design, not only can carry out capability test, low cost moreover to the transformer.
In order to achieve the above purpose, the technical scheme of the utility model is that: a transformer teaching experiment device, comprising: the utility model provides a single phase alternating current power supply, single-phase voltage regulation module, single-phase vary voltage module, voltmeter module, ampere meter module, electric power meter module, wherein, the output of single phase alternating current power supply with the input electricity of single-phase voltage regulation module is connected, the output of single-phase voltage regulation module with the output electricity of single-phase voltage regulation module is connected, the voltmeter module is used for through the wire with the circuit connection that awaits measuring with measuring voltage, the ampere meter module is arranged in with measuring current through the wire series connection access circuit, the electric power meter module is used for through the wire according to predetermineeing wiring rule access circuit in order to measure electric power.
The utility model discloses an in an embodiment, teaching experiment device still includes the panel, the panel sets up on single-phase AC power supply, single-phase voltage regulation module, single-phase vary voltage module, voltmeter module, ampere meter module, the panel surface is provided with a plurality of through-holes, the binding post of single-phase AC power supply, single-phase voltage regulation module, single-phase vary voltage module, voltmeter module and ampere meter module passes the through-hole protrusion in on the panel.
In an embodiment of the present invention, the single-phase voltage regulating module has a voltage regulating knob, and the voltage regulating knob is used for regulating the output voltage of the single-phase voltage regulating module.
In one embodiment of the present invention, the single-phase ac power supply provides 220V ac power.
In an embodiment of the present invention, the single-phase ac power supply is connected to the commercial power through a power plug, and the single-phase ac power supply has a switch for switching connection or disconnection between the single-phase ac power supply and the commercial power.
The utility model discloses owing to adopt above technical scheme, make it compare with prior art and have following advantage and positive effect:
(1) The utility model discloses a multiple experiment content can be set up out through the module in the device to modular design, improves student's innovation ability and hands-on ability, and the designability is strong, and scalability is strong.
(2) The utility model discloses low cost, experimental method is simple, can realize the capability test of transformer through lower cost.
Drawings
The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of an operation panel of the transformer teaching experimental device of the utility model;
FIG. 2 is a schematic diagram of the transformer teaching experimental device of the utility model showing the measurement transformation ratio;
fig. 3 is the utility model discloses a transformer teaching experiment device is empty load and is tested the schematic diagram.
Description of reference numerals:
1: a voltmeter module; 2: an ammeter module; 3: a power meter module; 4: a single-phase voltage transformation module; 5: a single-phase voltage regulating module; 6: a single-phase ac power supply.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It is to be noted that the drawings are in a very simplified form and are not to be construed as precise ratios as are merely intended to facilitate and distinctly illustrate the embodiments of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
Referring to fig. 1, showing the utility model discloses a transformer teaching experiment device operating panel schematic diagram, the utility model discloses a transformer teaching experiment device includes: the device comprises a single-phase voltage regulating module 5, a single-phase voltage transformation module 4, a voltmeter module 1, an ammeter module 2, an electric power meter module 3, a single-phase alternating-current power supply 6 and an operation panel. The single-phase voltage regulating module 5 is provided with input terminals A and X and output terminals a and X, and is provided with a voltage regulating knob for regulating the output voltage between the output terminals a and X; the single-phase transformation module 4 has input terminals a and X and output terminals a and X; in this embodiment, the power supplied by the single-phase ac power supply 6 is 220V ac power. And input terminals A and X of the single-phase voltage regulating module 5 are electrically connected with two output terminals of the single-phase alternating-current power supply 6 respectively. The output terminals a and x of the single-phase voltage regulating module 5 are electrically connected with the input terminals a and x of the single-phase voltage transformation module 4, respectively.
Utilize above transformer teaching experimental apparatus, the experiment that the student can be simply, light completion measurement transformer transformation ratio K.
The transformation ratio K of the transformer is determined by the number of turns N1 and N2 of the primary winding and the secondary winding of the transformer.
And the output ends a and x of the single-phase voltage regulating module 5 are connected with the terminal of the voltmeter module 1 to measure the single-phase voltage regulating output voltage. And observing the reading of the voltmeter module 1, and adjusting the output voltage of the single-phase voltage regulating module 5 to be about 50% of the rated voltage of the single-phase voltage transformation module.
For the safety of the test, the test operation is generally carried out by applying a voltage to the low-voltage side of the transformer. And the output ends a and x of the single-phase voltage regulator module 5 are connected with the low-voltage winding a and x terminal jacks of the single-phase transformation module 4. Respectively measuring the low-voltage winding a and the x voltage U of the single-phase transformation module 4 by using the voltmeter module 1 ax With high-voltage winding A, X voltage U AX Obtaining the transformation ratio K = U of the transformer by calculating the ratio AX /U ax . Verified K = U AX /U ax ＝N2/N1。
Utilize above transformer teaching experimental apparatus, the student can also be simple, convenient no-load experiment of accomplishing the transformer.
The purpose of the transformer no-load test is to measure the no-load voltage, the no-load current and the no-load loss of the transformer, so as to calculate the excitation parameters of the transformer.
For measuring instruments and personal safety considerations, a voltage is applied to the low-voltage windings a, x of the single-phase voltage transformation module 4. The output ends a and x of the single-phase voltage regulating module 5 are connected with the terminals of the voltmeter module 1 to measure the output voltage of the voltage regulator, namely the voltage U applied to the two ends of the low-voltage windings a and x of the single-phase voltage transformation module 4 20 Before measurement, U is firstly put in order to be safe 20 And adjusting to the collar.
Output terminal a of single-phase voltage regulation module 5 is connected with the first voltage binding post of wattmeter module 3 with the wire, output terminal a of single-phase voltage regulation module 5 is connected with the first current binding post of wattmeter module 3 with the wire, first voltage binding post of wattmeter module 3 is connected with first current binding post electricity, second voltage binding post of wattmeter module 3 is connected with output terminal x of single-phase voltage regulation module 5 electricity, the second current binding post of wattmeter module 3 is connected with the input terminal of ammeter module 2 electricity, the output terminal of ammeter module 2 is connected with input terminal a of single-phase voltage transformation module electricity, output terminal x of single-phase voltage regulation module 5 is connected with input terminal x of single-phase voltage transformation module 4 electricity. After the circuit connection is completed, the schematic diagram of the circuit is shown in fig. 3.
The voltage regulating knob of the single-phase voltage regulating module 5 is regulated to observe the reading of the voltmeter module 1, so that U 20 Starting from zero, increasing to a voltage U equal to the nominal voltage of the single-phase transformation module 4 2N . Reading I of observing ammeter module 2 and power meter module 3 0 And P 0 And record I 0 And P 0 And (4) data.
According to the experimental data, the excitation parameter Z of the transformer can be calculated through a theoretical formula m 、R m And X m 。
The experimental device can also realize the short-circuit test of the single-phase transformer. The experimental method for the short circuit experiment is not described in detail herein.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the embodiments. Even if various changes are made to the present invention, the changes are still within the scope of the present invention if they fall within the scope of the claims and their equivalents.
Claims (5)
1. The utility model provides a transformer teaching experimental apparatus which characterized in that includes: the utility model provides a single phase alternating current power supply, single-phase voltage regulation module, single-phase vary voltage module, voltmeter module, ampere meter module, electric power meter module, wherein, the output of single phase alternating current power supply with the input electricity of single-phase voltage regulation module is connected, the output of single-phase voltage regulation module with the output electricity of single-phase voltage regulation module is connected, the voltmeter module is used for through the wire with the circuit connection that awaits measuring with measuring voltage, the ampere meter module is arranged in with measuring current through the wire series connection access circuit, the electric power meter module is used for through the wire according to predetermineeing wiring rule access circuit in order to measure electric power.
2. The transformer teaching experiment device according to claim 1, further comprising a panel, wherein the panel is arranged on the single-phase alternating current power supply, the single-phase voltage regulating module, the single-phase voltage transforming module, the voltmeter module and the ammeter module, a plurality of through holes are formed in the surface of the panel, and wiring terminals of the single-phase alternating current power supply, the single-phase voltage regulating module, the single-phase voltage transforming module, the voltmeter module and the ammeter module penetrate through the through holes and protrude out of the panel.
3. The transformer teaching experiment device of claim 1, wherein the single-phase voltage regulation module has a voltage regulation knob for regulating the output voltage of the single-phase voltage regulation module.
4. The transformer teaching experiment device of claim 1 wherein the single-phase ac power supply provides 220V ac power.
5. The transformer teaching experiment device of claim 4, wherein the single-phase AC power supply is connected to the mains supply through a power plug, and the single-phase AC power supply has a switch for switching the connection or disconnection of the single-phase AC power supply to or from the mains supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222124163.3U CN218585507U (en) | 2022-08-12 | 2022-08-12 | Transformer teaching experiment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222124163.3U CN218585507U (en) | 2022-08-12 | 2022-08-12 | Transformer teaching experiment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218585507U true CN218585507U (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222124163.3U Active CN218585507U (en) | 2022-08-12 | 2022-08-12 | Transformer teaching experiment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218585507U (en) |
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2022
- 2022-08-12 CN CN202222124163.3U patent/CN218585507U/en active Active
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