Inductance-adjusting series resonance experiment device

Abstract

The utility model discloses an inductance-adjusting series resonance experiment device, and relates to the technical field of experiment devices, the inductance-adjusting series resonance experiment device comprises an excitation transformer, the top end face of the excitation transformer is fixedly connected with a control console, and the inductance-adjusting series resonance experiment device is provided with a mounting plate and a spring sleeve. Through the arrangement of the spring sleeve arranged between the mounting plate and the turntable, after the grounding wire is connected with the turntable, if the grounding wire is pulled, the spring sleeve arranged between the mounting plate and the turntable is firstly pulled, so that the grounding wire is not directly separated from the ground, the purpose of stable connection is further achieved, and the stability during an experiment is remarkably improved; the excitation transformer and the insulation pad are arranged, so that an object to be tested can be tested by being placed on the insulation pad when the object to be tested is tested, the object to be tested is separated from the body of the excitation transformer, and the overall practicability and stability of the device can be remarkably improved when the object to be tested is tested.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental devices, in particular to a tuning inductance series resonance experimental device. Background Technique

[0002] The variable frequency series resonance test device is different from general test instruments. The biggest feature is that the same set of equipment can be used for the AC withstand voltage tests of different electrical equipment, such as cross-linked cables, transformers, GIS, motors, and generators. The existing patent for a series resonance experimental device, patent publication number CN218524819U, includes a frequency modulation and voltage regulation power supply, an exciting transformer, a reactor, a voltage divider, and a test object. The input end of the frequency modulation and voltage regulation power supply is connected to a three-phase AC source, and its output end is connected to the input end of the exciting transformer. The output end of the exciting transformer is connected to the input end of the reactor. The output end of the reactor is connected to the test object. The voltage divider is connected between the reactor and the test object, and a signal line is connected between the voltage divider and the frequency modulation and voltage regulation power supply to detect high voltage signals and send them to the frequency modulation and voltage regulation power supply. The utility model realizes the frequency modulation and voltage regulation of the power supply, improving the quality factor and resonance frequency. A switch circuit is connected in series between the filter circuit and the inverter bridge circuit. This switch circuit is used to prevent the inverter bridge circuit from short-circuiting with the full-bridge rectifier circuit, and the MCU is used to control the drive unit DR1 to realize the on-off of the switch circuit, improving the safety of the circuit.

[0003] Regarding the above related technologies, the inventor believes that there are the following defects: when it is in use, although it can be protected by the switch circuit, when it is in use, due to the lack of an effective stable grounding structure, when the grounding is abnormal during the test, it is very easy to cause a safety hazard of electric shock to the operator. Therefore, we propose a tuning inductance series resonance experimental device to solve the above problems. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a tuning inductance series resonance experimental device, which solves the problem that due to the lack of an effective stable grounding structure in the existing one, when the grounding is abnormal during the test, it is very easy to cause a safety hazard of electric shock to the operator.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: a tuning inductance series resonance experimental device, including an exciting transformer, a control console is fixedly connected to the top end surface of the exciting transformer, and the control console is a structure inclined backward. A control screen is also fixedly connected to the front end surface of the control console, and the control screen and the control console together form a control structure. A variable frequency power supply is fixedly connected to the left end surface of the exciting transformer, and the variable frequency power supply is electrically connected to the exciting transformer.

[0006] Preferably, a groove is formed on the top surface of the exciting transformer. An insulating pad is laid on the inner bottom surface of the groove. The insulating pad and the exciting transformer together form a voltage transformation structure. A bottom plate is fixedly connected to the right end surface of the exciting transformer.

[0007] Preferably, the main body of the bottom plate is longitudinally arranged, and the bottom plate is perpendicular to the right end surface of the exciting transformer. A reactor is fixedly connected to the top surface of the bottom plate.

[0008] Preferably, a voltage divider is also fixedly connected to the top surface of the bottom plate, and the voltage divider is located at the rear side of the reactor. The reactor and the voltage divider together form a detection structure.

[0009] Preferably, a grounding wire is fixedly connected to the top surface of the bottom plate. One side of the grounding wire far from the bottom plate is fixedly connected to a turntable. The bottom end of the turntable is rotatably connected to a spring sleeve, and the bottom end of the spring sleeve is fixedly connected to a mounting plate.

[0010] Preferably, the main body of the mounting plate is rectangular, and through holes are formed in the mounting plate.

[0011] Preferably, the through holes formed in the mounting plate are mounting holes, and there are four mounting holes in total. The four mounting holes are respectively formed at the four corner positions inside the mounting plate.

[0012] Advantageous Effects

[0013] The present utility model provides a tuning inductance series resonance experimental device. Compared with the prior art, the following advantageous effects are achieved:

[0014] In this tuning inductance series resonance experimental device, by providing a mounting plate and a spring sleeve, when the grounding wire is connected to the turntable and then pulled, the spring sleeve arranged between the mounting plate and the turntable will be pulled first, so that the grounding wire will not directly break away from the ground, thereby achieving the purpose of stable connection and significantly improving the stability during the experiment.

[0015] In this tuning inductance series resonance experimental device, by providing an exciting transformer and an insulating pad, the article to be tested can be placed on the insulating pad for testing during the test, so that it is separated from the main body of the exciting transformer, and the overall practicality and stability of the device can be significantly improved during the test. Description of the Drawings

[0016] Figure 1 is the front side view structural schematic diagram of the resonance experimental device of the present utility model;

[0017] Figure 2 is the top side view structural schematic diagram of the resonance experimental device of the present utility model;

[0018] Figure 3 It is a top - view structural schematic diagram of the resonance experiment device of the present utility model;

[0019] Figure 4 It is a combined structural schematic diagram of the ground wire and the turntable of the resonance experiment device of the present utility model;

[0020] Figure 5 It is a front - view structural schematic diagram of the resonance experiment device of the present utility model;

[0021] Figure 6 It is a right - view structural schematic diagram of the resonance experiment device of the present utility model.

[0022] In the figure: 1. Excitation transformer; 101. Console; 102. Control panel; 103. Variable - frequency power supply; 104. Insulating pad; 2. Base plate; 201. Reactor; 202. Voltage divider; 3. Ground wire; 302. Turntable; 303. Spring sleeve; 304. Mounting plate; 305. Mounting hole. Specific implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-6 , the present utility model provides a technical solution: a tuning - inductance series resonance experiment device, including an excitation transformer 1, a console 101 is fixedly connected to the top end surface of the excitation transformer 1, and the console 101 is a structure inclined backward, and a control panel 102 is also fixedly connected to the front end surface of the console 101, and the control panel 102 and the console 101 together form a control structure, and a variable - frequency power supply 103 is fixedly connected to the left end surface of the excitation transformer 1, and the variable - frequency power supply 103 is electrically connected to the excitation transformer 1;

[0025] By fixedly connecting a control panel 102 to the front end surface of the console 101, it can realize display operations when in use.

[0026] Refer to Figure 1 , Figure 2 , a groove is provided on the top end surface of the excitation transformer 1, an insulating pad 104 is laid on the bottom end surface inside the groove, and the insulating pad 104 and the excitation transformer 1 together form a voltage - transformation structure, and a base plate 2 is fixedly connected to the right end surface of the excitation transformer 1;

[0027] By fixedly connecting a bottom plate 2 to the right end face of the excitation transformer 1, it can carry the reactor 201 and the voltage divider 202.

[0028] Refer to Figure 1 、 Figure 3 , the main body of the bottom plate 2 is longitudinally arranged, and the bottom plate 2 is perpendicular to the right end face of the excitation transformer 1, and the reactor 201 is fixedly connected to the top end face of the bottom plate 2;

[0029] By fixedly connecting the reactor 201 to the top end face of the bottom plate 2, the reactor 201 is used to generate a series resonance with the capacitive test sample.

[0030] Refer to Figure 3 、 Figure 3 , the voltage divider 202 is also fixedly connected to the top end face of the bottom plate 2, and the voltage divider 202 is located at the rear side of the reactor 201. The reactor 201 and the voltage divider 202 together form a detection structure;

[0031] By providing the voltage divider 202, the voltage divider 202 is used to measure the high-voltage value and low-voltage on the regulator.

[0032] Refer to Figure 4 、 Figure 5 , the ground wire 3 is fixedly connected to the top end face of the bottom plate 2, and a turntable 302 is fixedly connected to the side of the ground wire 3 away from the bottom plate 2. The bottom end of the turntable 302 is rotatably connected to a spring sleeve 303, and the bottom end of the spring sleeve 303 is fixedly connected to a mounting plate 304;

[0033] By providing the spring sleeve 303, when the wire harness is pulled, it can be reset through the spring sleeve 303.

[0034] Refer to Figure 1 、 Figure 5 , the main body of the mounting plate 304 is a rectangular structure, and through holes are provided inside the mounting plate 304;

[0035] By providing through holes inside the mounting plate 304, rapid positioning can be achieved.

[0036] Refer to Figure 3 、 Figure 4 , the through holes provided in the mounting plate 304 are mounting holes 305, and there are four mounting holes 305 in total. The four mounting holes 305 are respectively provided at the four corner positions inside the mounting plate 304;

[0037] By providing the mounting holes 305, the ground wire 3 can be strengthened and limited.

[0038] During operation, when performing series resonance tests, place the excitation transformer 1 on the workbench. Synchronously, press the mounting plate 304 fixedly connected to the bottom end surface of the spring sleeve 303 against the ground, and synchronously bring the grounding wire 3 installed in the mounting plate 304 into contact with the ground. Achieve quick positioning and connection operations by passing bolts through the mounting holes 305 opened in the mounting plate 304. And after the connection is completed, when the grounding wire 3 is pulled, buffer operations can be synchronously achieved by using the expansion and contraction of the spring sleeve 303.

[0039] During testing, the capacitor of the test object and the reactor 201 form a series resonance connection mode; the voltage divider 202 is connected in parallel to the test object to measure the resonance voltage on the test object and serve as an overvoltage protection signal; the frequency modulation power output is coupled through the excitation transformer 1 to the series resonance circuit to provide the excitation power for series resonance to perform corresponding test work.

[0040] In summary, by providing the spring sleeve 303, the device can achieve stable grounding operations.

[0041] Meanwhile, the content not described in detail in this specification belongs to the well-known prior art of those skilled in the art.

Claims

1. A tuned inductor series resonance experimental device, comprising an excitation transformer (1), characterized in that: A control console (101) is fixedly connected to the top surface of the excitation transformer (1), and the control console (101) is a rearwardly inclined structure. A control panel (102) is also fixedly connected to the front surface of the control console (101), and the control panel (102) and the control console (101) together form a control structure. A variable frequency power supply (103) is fixedly connected to the left end surface of the excitation transformer (1), and the variable frequency power supply (103) is electrically connected to the excitation transformer (1).

2. The inductor series resonance experimental device according to claim 1, characterized in that: A groove is provided on the top end surface of the excitation transformer (1), an insulating pad (104) is laid on the inner bottom end surface of the groove, and the insulating pad (104) and the excitation transformer (1) together form a transformer structure, and a bottom plate (2) is fixedly connected to the right end surface of the excitation transformer (1).

3. The inductor-tuned series resonance experimental device according to claim 2, characterized in that: The main body of the bottom plate (2) is arranged longitudinally, and the bottom plate (2) and the right end surface of the excitation transformer (1) are arranged vertically, and a reactor (201) is fixedly connected to the top end surface of the bottom plate (2).

4. The inductor-tuned series resonance experimental device according to claim 3, characterized in that: A voltage divider (202) is also fixedly connected to the top end surface of the bottom plate (2), and the voltage divider (202) is located at the rear side of the reactor (201). The reactor (201) and the voltage divider (202) together form a detection structure.

5. The inductor-tuned series resonance experimental device according to claim 3, characterized in that: A grounding wire (3) is fixedly connected to the top surface of the bottom plate (2), and a rotating disk (302) is fixedly connected to the side of the grounding wire (3) away from the bottom plate (2), and a spring sleeve (303) is rotatably connected to the bottom end of the rotating disk (302), and a mounting plate (304) is fixedly connected to the bottom end of the spring sleeve (303).

6. The inductor-tuned series resonance experimental device according to claim 5, characterized in that: The main body of the mounting plate (304) is a rectangular structure, and a through hole is provided inside the mounting plate (304).

7. The inductor-tuned series resonance experimental device according to claim 6, characterized in that: The through holes provided in the installation plate (304) are installation holes (305), and there are four installation holes (305) in total. The four installation holes (305) are respectively provided at the four inner corners of the installation plate (304).

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