Experimental test equipment for measuring current change rate

Abstract

The utility model belongs to the technical field of measurement, and particularly relates to experimental test equipment for measuring the current change rate, which comprises a base and a vertical plate, the vertical plate is fixedly arranged at the end part of the left side of the base, a capacitor is fixedly arranged on the inner side surface of the vertical plate, and the base and the vertical plate are of an integrated structure; a coil is rotationally fixed to the side, close to the vertical plate, of the top of the base, a wire groove is fixedly formed in the side, away from the vertical plate, of the top of the base, and the wire groove is in a 7 shape. According to the experimental test equipment for measuring the current change rate, based on the current change characteristics of an inductance element and a capacitance element, according to the Faraday's law of electromagnetic induction, when current changes in an inductive load, induced electromotive force is generated and counteracts current change, transient voltage fluctuation is caused, meanwhile, the capacitance element stores and releases energy, and the current change rate is measured. The current fluctuation is smoothed, and the transient change of the current is slowed down, so that reliable data support is provided for a power system, motor control and other electronic applications.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of measurement technology, especially to a kind of experimental test equipment for measuring current rate of change. BACKGROUND

[0002] In the technical field of current rate of change measurement, there are some technical problems in traditional current measurement devices. First, these devices often have slow response speed and low precision when capturing rapid changes in current, especially transient changes in current. Second, when the current in the circuit changes sharply, the inductive element will produce a large inductive effect, causing distortion of the current waveform and affecting the accuracy of the measurement results. In addition, existing measurement devices usually rely on manual operation for circuit protection and lack automatic protection functions. Once circuit overload or short circuit occurs, the circuit cannot be disconnected in time, which may cause damage to circuit components. SUMMARY

[0003] Based on the existing measurement technical problems, the utility model provides an experimental test equipment for measuring current rate of change.

[0004] The utility model provides an experimental test equipment for measuring current rate of change, which includes base and vertical plate, vertical plate is fixed on the left side end of base, capacitor is fixedly installed on the inner surface of vertical plate, and base and vertical plate are integrated structure; coil is rotationally fixed on the top of base near vertical plate, wire slot is fixed on the top of base away from vertical plate, wire slot is shaped as 7, guide rail is threadedly fixed on the left side of wire slot on the top of base, and shunt is fixed on the end of wire slot near vertical plate on the top of base.

[0005] Preferably, self-recovery button is embedded and fixed inside vertical plate, one end of self-recovery button is connected to the top of base, and the other end of self-recovery button is located outside the other side of vertical plate.

[0006] Through the above technical scheme, self-recovery button can automatically disconnect when circuit overload or short circuit occurs, preventing excessive current from damaging the circuit and protecting the safety of circuit components. Since one end of self-recovery button is located on the top of base and the other end is located outside vertical plate, it provides a convenient access point for operators, allowing quick manual reset or inspection when a fault occurs.

[0007] Preferably, terminal block is threadedly connected to the top of guide rail away from wire slot, and air switch is movably connected to the outer wall of guide rail near wire slot.

[0008] Through the technical scheme, the terminal block is fixed on the top of the guide rail through threads, so that quick replacement and maintenance are facilitated without complicated disassembly process; the air switch is movably fixed on the outer wall of the guide rail near one side of the wire slot, so that the circuit can be quickly connected or disconnected according to requirements, and flexible circuit protection function is provided.

[0009] Preferably, a plurality of heat dissipation grooves are arranged on both sides of the wire slot, and each heat dissipation groove is arranged through the wire slot.

[0010] Through the technical scheme, the heat dissipation grooves provide more heat dissipation area for the wire slot, which helps to quickly dissipate heat and reduce the temperature in the wire slot, so as to protect the cable and avoid damage of the device caused by overheating of the cable.

[0011] Preferably, the guide rail is made of non-metallic conductive material.

[0012] Through the technical scheme, the non-metallic conductive material does not generate a magnetic field, so that electromagnetic interference on surrounding electronic equipment can be reduced, and normal operation of the equipment and stability of signals are ensured.

[0013] Preferably, the cable is sleeved on the outer wall of the middle part of the coil, and the cable is connected with one end of the air switch and the capacitor element, respectively; the other end of the air switch is connected with the cable passing through the wire slot and connected with one end of the shunt; the other end of the shunt is connected with the self-recovery button through the cable.

[0014] Through the technical scheme, the cable is directly sleeved on the outer wall of the middle part of the coil, so that a stable connection mode is provided, the loosening of the connection point caused by vibration or movement is reduced, and the reliability of the circuit is improved.

[0015] The utility model discloses a beneficial effect is: through the layout of base, vertical board, character shape's wire slot, rotation fixed coil, capacitor element, movable joint's air switch, built-in self-recovery button and shunt, realize compact structure, easy operation, convenient maintenance, high -efficient heat dissipation, circuit protection reliable and adaptability strong and multiple beneficial effects etc.. Among them, the rotation of the coil improves the flexibility of measurement;The design of the character shape of the wire slot and the heat dissipation groove enhances the heat dissipation performance and prevents the equipment from overheating;The guide rail of non-metallic conductive material reduces electromagnetic interference and improves the measurement accuracy;The connection of the air switch and the self-recovery button provides overload protection and automatic recovery function, and ensures the safety of the circuit. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a front overall appearance schematic view of the experimental test equipment for measuring the current change rate that the utility model proposes;

[0017] Fig. 2The utility model provides a back whole appearance schematic drawing of experimental test equipment for measuring current change rate.

[0018] In the figure: 1, base; 2, vertical plate; 3, wire slot; 4, guide rail; 5, air switch; 6, wiring board; 7, coil; 8, self-recovery button; 9, shunt; 10, heat dissipation groove; 11, capacitor. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0020] REFERENCE Figs. 1-2 An experimental test equipment for measuring current change rate, including base 1 and vertical plate 2, be provided with vertical plate 2 at left side end of base 1, the inside surface of vertical plate 2 is fixedly installed with capacitor 11, and base 1 and vertical plate 2 are integrated structure;Coil 7 is rotationally fixed on the top of base 1 near vertical plate 2 side, wire slot 3 is fixed on the top of base 1 away from vertical plate 2 side, and wire slot 3 is provided as 7 shape, guide rail 4 is screw-fixed on the top of base 1 wire slot 3 left side, and shunt 9 is fixed on the top of base 1 wire slot 3 end near vertical plate 2.

[0021] Further, self-recovery button 8 is embedded and fixed in vertical plate 2, and the connecting end of self-recovery button 8 is located on the top of base 1, and the other end of self-recovery button 8 is located on the other side outside vertical plate 2.

[0022] Self-recovery button 8 can automatically disconnect when the circuit is overloaded or short-circuited, prevent the damage of excessive current to the circuit, protect the safety of circuit components, and since one end of self-recovery button 8 is located on the top of base 1 and the other end is located outside vertical plate 2, it provides a convenient access point for the operator, so that manual reset or inspection can be quickly performed when a fault occurs.

[0023] Further, the top of guide rail 4 away from wire slot 3 side is screw-connected with wiring board 6, and air switch 5 is movably fixed on the outer wall of guide rail 4 near wire slot 3 side.

[0024] Wiring board 6 is screw-fixed on the top of guide rail 4, which facilitates quick replacement and maintenance without complex disassembly process, and air switch 5 is movably clamped on the outer wall of guide rail 4 near wire slot 3 side, which can quickly connect or disconnect the circuit as needed, providing flexible circuit protection function.

[0025] Further, a plurality of heat dissipation grooves 10 are formed on both sides of wire slot 3, and each heat dissipation groove 10 is provided through the inside of wire slot 3.

[0026] The increase of the heat dissipation groove 10 provides more heat dissipation area inside the wire slot 3, which helps to dissipate heat faster, reduces the temperature inside the wire slot, hides the wires, facilitates organization, prevents other wires from being too close to the coil 7 and affecting the coil's induced current, protects the cable, and avoids overheating and damage to the device.

[0027] Further, the guide rail 4 is made of non-metallic conductive material. Since non-metallic conductive material is not conductive and does not generate a magnetic field, it can reduce electromagnetic interference on surrounding electronic equipment and ensure normal operation of the equipment and stability of the signal.

[0028] Further, the cable or wire is sleeved on the outer wall of the middle part of the coil 7, and the two ends of the cable or wire are respectively connected with one end of the air switch 5 and the power connection plate 6. The other end of the air switch 5 is connected with the cable passing through the wire slot 3 and connected with one end of the shunt 9, and the other end of the shunt 9 is connected with the self-recovery button 8 through the cable.

[0029] The cable is directly sleeved on the outer wall of the middle part of the coil 7, providing a stable connection method and reducing the loosening of the connection point caused by vibration or movement, improving the reliability of the circuit.

[0030] The present application solves the problem of insufficient precision and complex operation in the prior art. Traditional test equipment often fails to capture rapidly changing current waveforms when processing dynamic responses of inductive components, resulting in inaccurate test results. The core technology lies in accurately measuring and analyzing the responses of inductive and capacitive components during current transient changes. The device can accurately control and measure current changes through key components such as shunt 9, inductive load (such as coil 7), capacitor 11, self-recovery button 8, and air switch 5.

[0031] The device adopts a compact design, and reasonably arranges various components, so as to reduce the interference between devices. In principle, the device is based on the current change characteristics of inductive elements and capacitive elements. According to Faraday's law of electromagnetic induction, when the current changes in an inductive load (such as coil 7), an induced electromotive force is generated, which acts against the current change, resulting in transient voltage fluctuations. At the same time, the capacitive element (such as capacitor 11) stores and releases energy to smooth the current fluctuations and slow down the transient changes of the current. The device accurately measures the current change through the shunt, and records the voltage waveform in combination with the oscilloscope, so as to accurately analyze the current change rate. Thus, reliable data support is provided for power systems, motor control and other electronic applications. Compared with the traditional test equipment, the device has limitations in capturing transient current waveforms, which often leads to inaccurate test results. The device can not only accurately measure the current change rate, but also is easy to operate, and different loads or capacitors 11 can be easily replaced to observe the difference in current change rate (di / dt) under different conditions.

[0032] Working principle:

[0033] When connected, first, the two ends of the coil 7 are respectively connected in series with the outlet end of the air switch 5 and one end of the terminal block 6;

[0034] Then, the inlet end of the air switch 5 and the other end of the terminal block 6 are electrically connected to two terminal posts on the shunt 9 through the wires arranged in the wire slot 3;

[0035] Finally, the two terminal posts on the shunt 9 are electrically connected to the self-recovery button 8 to realize the action of the power-on switch, and the capacitor 11 is electrically connected to the self-recovery button 8 to realize the parallel electrical connection with the coil 7.

[0036] The above describes only the preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can make equivalent replacements or changes to the technical solutions and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An experimental testing device for measuring the rate of change of current, comprising a base (1) and a vertical plate (2), characterized in that: A vertical plate (2) is fixedly provided at the left end of the base (1), and a capacitor (11) is fixedly installed on the inner surface of the vertical plate (2). The base (1) and the vertical plate (2) are an integral structure. A coil (7) is rotatably fixed on the top of the base (1) near the vertical plate (2). A wire groove (3) is fixed on the top of the base (1) away from the vertical plate (2). The wire groove (3) is shaped like a 7. A guide rail (4) is threadedly fixed on the left side of the wire groove (3) at the top of the base (1). A shunt (9) is fixed at the end of the wire groove (3) at the top of the base (1) near the vertical plate (2).

2. The experimental testing device for measuring the rate of change of current according to claim 1, characterized in that: A self-resetting button (8) is embedded and fixed inside the upright plate (2), and the connecting end of the self-resetting button (8) is located at the top of the base (1), while the other end of the self-resetting button (8) is located outside the other side of the upright plate (2).

3. The experimental testing device for measuring the rate of change of current according to claim 1, characterized in that: A terminal block (6) is threadedly connected to the top of the guide rail (4) away from the wire groove (3), and a circuit breaker (5) is movably engaged on the outer wall of the guide rail (4) near the wire groove (3).

4. The experimental testing device for measuring the rate of change of current according to claim 1, characterized in that: Multiple heat dissipation slots (10) are provided on both sides of the wire groove (3), and each heat dissipation slot (10) is connected to the inside of the wire groove (3).

5. The experimental testing device for measuring the rate of change of current according to claim 1, characterized in that: The guide rail (4) is made of non-metallic conductive material.

6. The experimental testing device for measuring the rate of change of current according to claim 3, characterized in that: The outer wall of the coil (7) is fitted with a cable, and the other end of the circuit breaker (5) is connected to the cable through the wire groove (3) and connected to one end of the shunt (9). The other end of the shunt (9) is connected to the self-resetting button (8) through a cable.

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