CN214503845U - Power supply short circuit testing device and experimental system - Google Patents

Abstract

The utility model relates to a negative pole high voltage power supply technical field especially relates to a power short circuit testing arrangement and experimental system, and wherein power short circuit testing arrangement includes first electrically conductive dish, second electrically conductive dish, impeller and discharge needle, and first electrically conductive dish and second electrically conductive dish parallel arrangement, impeller install on the second electrically conductive dish, and the copper needle is installed on the impeller, and can move along with the impeller along the direction of being close to or keeping away from first electrically conductive dish. When a cathode high-voltage power supply short-circuit experiment is simulated, the power supply short-circuit testing device is connected into a power supply short-circuit experiment system and is connected with a load in parallel, the pushing piece drives the discharge needle to be close to the first conductive disc, the discharge needle is ignited in the closing process, at the moment, the power supply short-circuit testing device is equivalent to short-circuit of the load, the display waveform and parameters of an oscilloscope are observed, and if the power supply can be normally protected, the successful development of the power supply is proved. The power supply short circuit testing device replaces the simulation of the ignition process of testing personnel, and the safety of the experiment is guaranteed.

Description

Power supply short circuit testing device and experimental system

Technical Field

The disclosure relates to the technical field of cathode high-voltage power supplies, in particular to a power supply short circuit testing device and an experimental system.

Background

For the high-power long-pulse gyrotron used at present, the development of a cathode high-voltage power supply is of great importance, because the cathode high-voltage power supply needs to be turned off within 10 microseconds in the running process of the gyrotron, such as internal ignition and other limit conditions, so as to protect the safety of the gyrotron.

Therefore, in the development process of the cathode high-voltage power supply, the limit conditions such as the ignition of the gyrotron and the like need to be simulated, so that the protection condition of the cathode high-voltage power supply is tested. The general method for testing the protection of the cathode high-voltage power supply by simulating the ignition of the gyrotron is that in the normal output experiment process of the cathode high-voltage power supply, a tester holds the grounding rod by hand, the tip of the grounding rod gradually approaches the high-voltage output end of the cathode high-voltage power supply, so that the high voltage is short-circuited to the ground, and parameters such as the protection time of the cathode high-voltage power supply are obtained through an oscilloscope. The experiment needs to strictly train the testers, and the serious consequences such as casualties can be brought due to improper or non-strict operation.

Disclosure of Invention

In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides a power supply short circuit testing apparatus and an experimental system.

The invention provides a power supply short circuit testing device which comprises a first conductive disc, a second conductive disc, a pushing piece and a discharge needle, wherein the first conductive disc and the second conductive disc are arranged in parallel, the pushing piece is installed on the second conductive disc, and the copper needle is installed on the pushing piece and can move along with the pushing piece in a direction close to or far away from the first conductive disc.

Optionally, a first terminal is arranged on the first conductive disc, a second terminal and a third terminal are arranged on the second conductive disc, the second terminal is electrically connected with the pushing member, and the third terminal is used for being connected with a ground wire.

Optionally, a discharging station is arranged on the surface of the first conductive disc opposite to the second conductive disc, and the distance between the discharging station and the discharging needle is adjusted by the pushing piece.

Optionally, the connector further comprises an insulating connecting frame, and the insulating connecting frame is connected between the first conductive disc and the second conductive disc.

Optionally, the insulating frame includes at least two insulating columns arranged in parallel, and the insulating columns are perpendicular to the first conductive disc and the conductive disc.

Optionally, the pushing rod comprises an air cylinder, and the air cylinder is mounted on the second conductive disc through a fixing plate.

Optionally, the discharge needle and/or the discharge station is made of copper or copper-tungsten alloy.

Optionally, the first binding post, the second binding post and the third binding post are compression nuts.

The utility model also provides a power short circuit experimental system, including the power that awaits measuring, load and as above any one the power short circuit testing arrangement, the load with the positive negative pole electricity of the power that awaits measuring is connected, the power short circuit testing arrangement with the load is parallelly connected.

Optionally, the first terminal is electrically connected to the positive electrode of the power supply to be tested, the second terminal is electrically connected to the negative electrode of the power supply to be tested, and the third terminal is connected to a ground wire.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages: the utility model provides a power short circuit testing device, including the first electrically conductive dish and the second electrically conductive dish that set up parallel to each other, the impeller is installed on the second electrically conductive dish, the discharge needle is installed on the catch bar, the discharge needle can move along with the impeller along the direction of being close to or keeping away from first electrically conductive dish, when simulation negative pole high voltage power short circuit experiment, with this power short circuit testing device access to power short circuit experimental system, parallelly connected with the load, the impeller of power short circuit testing device drives the discharge needle and is close to first electrically conductive dish, at the in-process that approaches, the discharge needle strikes sparks, at this moment, power short circuit testing device is equivalent to short circuit the load, observe oscilloscope and show waveform and parameter, if the power can normally protect, prove that the power development is successful. This power short circuit testing arrangement has replaced the tester simulation process of striking sparks, has ensured the security of experiment, has reduced casualties, and simple structure, easily operation, even if ordinary operating personnel also can be more easy completion.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic circuit structure diagram of a short-circuit experiment system of a cathode high-voltage power supply according to an embodiment of the disclosure;

fig. 2 is a schematic structural diagram of a power supply short circuit testing apparatus according to an embodiment of the disclosure;

FIG. 3 is a cross-sectional view of a power short test apparatus according to an embodiment of the disclosure;

FIG. 4 is a schematic view of a connection structure of the second conductive disc, the pushing member and the discharge needle according to the embodiment of the disclosure;

FIG. 5 is a schematic view of a connection structure of the pushing member and the discharge needle according to the embodiment of the disclosure;

fig. 6 is another view of fig. 4.

A, detecting a cathode high-voltage power supply; b. a load; c. a power supply short circuit test device; 1. a first conductive pad; 2. a second conductive pad; 3. an insulating column; 4. a pusher member; 5. a discharge needle; 6. a compression nut; 7. a fixing plate; 8. an installation table; 9. mounting a plate; 10. broadcasting a radio station; 101. a first terminal post; 102. a second terminal; 103. a third terminal; 104. and (5) fastening the screw.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

In the field of microwave heating, a cathode high-voltage power supply is used for supplying power to a gyrotron, in a gyrotron experiment, the cathode high-voltage power supply is possibly short-circuited due to reasons such as ignition in the gyrotron, and if the cathode high-voltage power supply is short-circuited, the cathode high-voltage power supply needs to be protected in a short time. However, the protection effectiveness, protection time, and the like of the cathode high-voltage power supply need to be tested in advance.

As shown in fig. 1, the present disclosure provides a cathode high-voltage power supply short-circuit experimental system, which includes a cathode high-voltage power supply a to be detected and a power supply short-circuit testing device c, in this experiment, since a gyrotron is a core component of microwave heating, a load b is adopted to replace the gyrotron for carrying out an experiment, and the power supply short-circuit testing device c replaces a real gyrotron to simulate the protection performance of the cathode high-voltage power supply a to be detected under a limit short-circuit condition, so as to verify the protection performance of the cathode high-voltage power supply a to be detected. The method comprises the steps that the anode and the cathode of a cathode high-voltage power supply a to be detected are electrically connected with a load, a power supply short-circuit testing device is connected with the load in parallel, when the cathode high-voltage power supply a to be detected normally outputs, cathode current flows through the load and flows along a solid arrow in figure 1, at the moment, a power supply short-circuit testing device c is in a short-circuit state, when a short-circuit experiment of the cathode high-voltage power supply a is simulated, the power supply short-circuit testing device c short-circuits the load, the cathode current flows along a dotted arrow in figure 1, at the moment, the cathode high-voltage power supply a to be detected is in an overcurrent state, and if the cathode high-voltage power supply a to be detected can be normally protected, the cathode high-voltage power supply is proved to be successfully developed.

Specifically, as shown in fig. 2 to 6, the power supply short circuit testing device includes a first conductive disc 1, a second conductive disc 2, a pushing member 4 and a discharge needle 5, the first conductive disc 1 and the second conductive disc 2 are arranged in parallel and relatively fixed, the pushing member 4 is installed on the second conductive disc 2, the discharge needle 5 is installed on the pushing member 4 and can move along with the pushing member 4 in a direction approaching to or away from the first conductive disc 1, the pushing member 4 is made of a conductive material, when the power supply short circuit testing device c is electrically connected with the cathode high-voltage power supply 1 to be detected, the pushing member 4 drives the discharge needle 5 to gradually approach the first conductive disc 1, in the approach process, the discharge needle 5 is ignited, the first conductive disc 1 is conducted with the second conductive disc 2 through the discharge needle 5 and the pushing member 4, and at this time, the power supply short circuit testing device c can short circuit the load b.

The power supply short circuit testing device adopts a point discharge principle, when the first conductive disc 1 and the second conductive disc 2 are electrified, a strong electric field is formed between the first conductive disc 1 and the second conductive disc 2, along with the sharp increase of the electric field intensity, air between the first conductive disc 1 and the second conductive disc 2 is ionized to generate gas discharge, the discharge is accompanied with strong luminescence and damage sound, the ionization area of the discharge is expanded to the first conductive disc 1 from a point, a discharge channel is formed between the first conductive disc 1 and the first conductive disc 1, when the discharge needle 5 approaches the first conductive disc 1 along with a pushing piece, the point discharge phenomenon is easier to occur along with the reduction of the distance between the discharge needle 5 and the first conductive disc 1, but when the discharge channel is formed between the discharge needle 5 and the first conductive disc 1, the power supply short circuit testing device is conducted, and can short circuit a load.

Further, in some embodiments of the present disclosure, the pushing element 4 of the power supply short circuit testing apparatus is a cylinder, the model of which may be TN32-200-S, the second conductive disc 2 is provided with a fixing plate 7, the fixing plate 7 is L-shaped, wherein a first plate of the L-shaped fixing plate 7 is attached to the upper surface of the second conductive disc 2 and is fixedly connected to the second conductive disc 2 through a fastening screw, the cylinder is installed on a second plate of the L-shaped fixing plate 7, and a side surface of the cylinder is attached to the second plate and is fixed to the second plate through the fastening screw. Referring to fig. 4, heat-exchanging diagram 5 shows, the upper end of the cylinder is provided with a mounting table 8 for fixing the discharge needle 5, the mounting table 8 is arranged along the extending direction of the cylinder, the discharge needle 5 is fixed on the mounting table 8 through at least two mounting plates 9, the at least two mounting plates 9 are arranged along the length direction of the discharge needle 5 at intervals, each mounting plate 9 is provided with a plurality of fastening screws, the mounting table 8 is provided with a plurality of mounting holes, the mounting holes are threaded holes, the mounting plates press one end of the discharge needle 5 against the mounting table 8, the fastening screws are screwed, one end of the discharge needle 5 is fixedly connected with the mounting table 8, and the other end of the discharge needle 5 is higher than the mounting table 8, so that when the discharge needle 5 is close to the first conductive plate 1, a point discharge reaction is generated.

Further, in some embodiments of the present disclosure, a first terminal 101 is disposed on the first conducting disc 1, a second terminal 102 and a third terminal 103 are disposed on the second conducting disc 2, the first terminal 101 is electrically connected to a to-be-detected cathode high-voltage power supply, the second terminal 102 is electrically conducted with the pushing member 4, and the third terminal 103 is connected to a ground line.

First terminal, second terminal and third wiring all are equipped with gland nut, and when power short circuit testing arrangement access circuit, the wiring end winding of electric wire or hook on each terminal compress tightly through gland nut, and the electric wire that will connect on each terminal compresses tightly fixedly.

In addition, a discharge station 10 is arranged on the surface of the first conductive disc 1 opposite to the second conductive disc 2, the center of the discharge station 10 is opposite to the discharge needle 5, and the discharge station is fixed on the lower surface of the first conductive disc 1 through a fastening screw 104, specifically, the shape of the discharge station 10 includes, but is not limited to, a circle, an ellipse, a rectangle and the like, and the thickness is 20 mm. Be equipped with the screw hole on the upper surface of broadcasting station 10 (that is to say the face of laminating with first electrically conductive dish), the corresponding position of first electrically conductive dish 1 is equipped with the through-hole, fastening screw 104 pass behind the through-hole on the first electrically conductive dish 1 with the screw hole cooperation on the platform 10 that discharges, will broadcast station 10 and fix on first electrically conductive dish 1, copper or copper tungsten alloy is chooseed for use to the material of platform 10 and discharge needle 5 that discharges, can prolong the life who broadcasts station 10 and discharge needle 5. The power short circuit testing arrangement is struck sparks at every turn and is all formed the spot on the platform 10 that discharges, and along with the increase of experiment number of times, the spot volume on the platform 10 that discharges is more and more, can cause the influence to the experimental result, and platform 10 that discharges and discharge needle 5 adopt copper or copper tungsten alloy material, can reduce the formation of the spot of striking sparks, and the life of platform 10 and discharge needle 5 is discharged in the extension.

Further, an insulating connecting frame is arranged between the first conductive disc 1 and the second conductive disc 2, one end of the insulating connecting frame is connected with the first conductive disc 1, and the other end of the insulating connecting frame is connected with the second conductive disc 2 and used for insulating the first conductive disc 1 and the second conductive disc 2. Specifically, in some embodiments of the present disclosure, the first conductive plate 1 and the second conductive plate 2 are both circular plates, and the material is conductive material, and specifically, the diameter of the first conductive plate 1 and the second conductive plate 2 is 150 mm. The insulating link includes two piece at least parallel arrangement's insulating column 3, and insulating column 3 perpendicular to first electrically conductive dish 1 and the electrically conductive dish 2 setting of second, and further, the both ends of insulating column 3 can adopt the mode of welding or joint and first electrically conductive dish 1 and the electrically conductive dish 3 fixed connection of second. Specifically, the number of the insulating columns 2 is 6, the 6 insulating columns 3 are arranged by taking the center of the second conductive disc 2 as the center of a circle, and the second wiring column 102 and the third wiring column 103 are respectively arranged on the second conductive disc 2 between the two insulating columns 2, so that wiring is facilitated when the power supply short circuit testing device is connected to a circuit.

To sum up, the cathode high voltage power supply short circuit testing device and the experimental system provided by the embodiment of the disclosure utilize the principle of point discharge to connect the power supply short circuit testing device into the experimental circuit, wherein the circuit device is connected in parallel with the load, the cathode high voltage power supply to be detected serves as a power supply in the experimental circuit, when a pushing member in the power supply short circuit testing device drives a discharge needle to be close to a discharge table, according to the principle of point discharge, electric sparks are generated at the end part of the discharge needle, and air between the discharge needle and a first conductive disc is ionized to form a discharge channel, at this time, the power supply short circuit testing device short circuits the load, and if the cathode high voltage power supply to be detected can be normally protected, the successful development of the cathode high voltage power supply to be detected is proved. The power supply short circuit testing device of the embodiment of the disclosure can replace testing personnel to simulate the ignition experiment, can improve the safety of the experiment in the cathode high-voltage power supply short circuit experiment,

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The power supply short circuit testing device is characterized by comprising a first conductive disc (1), a second conductive disc (2), a pushing piece (4) and a discharge needle (5), wherein the first conductive disc (1) and the second conductive disc (2) are arranged in parallel, the pushing piece (4) is installed on the second conductive disc (2), and the discharge needle (5) is installed on the pushing piece (4) and can move along with the pushing piece (4) in a direction close to or far away from the first conductive disc (1).

2. The power supply short circuit testing device according to claim 1, wherein a first terminal (101) is arranged on the first conductive disc (1), a second terminal (102) and a third terminal (103) are arranged on the second conductive disc (2), the second terminal (102) is electrically conducted with the pushing member (4), and the third terminal (103) is used for connecting a ground wire.

3. The power supply short circuit testing device according to claim 2, characterized in that a discharging station (10) is arranged on the surface of the first conductive disc (1) opposite to the second conductive disc (2), and the distance between the discharging station (10) and the discharge needle (5) is adjusted by the pushing member (4).

4. The power supply short circuit testing device according to claim 2, further comprising an insulating connecting frame connected between the first conductive pad (1) and the second conductive pad (2).

5. The electrical short circuit testing device according to claim 4, wherein the insulating connection frame comprises at least two parallel arranged insulating posts (3), the insulating posts (3) being arranged perpendicular to the first and second electrically conductive discs (1, 2).

6. The power supply short circuit testing device according to claim 2, characterized in that the push member (4) comprises a cylinder mounted on the second conductive disc (2) by means of a fixing plate (7).

7. The power supply short circuit testing device according to claim 3, characterized in that the material of the discharge needle (5) and/or the discharge station (10) is copper or copper-tungsten alloy.

8. The power supply short circuit testing device according to claim 2, wherein the first terminal stud (101), the second terminal stud (102) and the third terminal stud (103) are compression nuts.

9. A power supply short circuit experimental system, characterized by comprising a power supply to be tested, a load (b) and a power supply short circuit testing device (c) according to any one of claims 2 to 8, wherein the load (b) is electrically connected with the positive electrode and the negative electrode of the power supply to be tested, and the power supply short circuit testing device (c) is connected with the load (b) in parallel.

10. The power supply short circuit experiment system according to claim 9, wherein the first terminal (101) is electrically connected with a positive electrode of the power supply to be tested, the second terminal (102) is electrically connected with a negative electrode of the power supply to be tested, and the third terminal (103) is connected with a ground wire.

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