Power frequency withstand voltage test device

Abstract

The utility model discloses a power frequency withstand voltage test device, which comprises a box body, a transformer, a lead, a coil winder and a lead mechanism, and is characterized in that the box body is provided with an open accommodating cavity, and the box body is provided with a door plate for closing or opening the accommodating cavity; the transformer is arranged in the accommodating cavity; one end of the wire is electrically connected with the transformer, and the other end of the wire is output from the accommodating cavity and is electrically connected with the electrical equipment; the wire coiling machine is arranged in the accommodating cavity and is used for coiling a wire; the lead mechanism is arranged in the containing cavity, one end of the wire is connected with the lead mechanism, and the lead mechanism is used for guiding the wire to be output from the containing cavity. According to the power frequency withstand voltage test device provided by the embodiment of the utility model, wires can be arranged through the wire coiling machine, and the wires are guided to be output through the wire leading mechanism so as to be connected with electrical equipment, so that the condition that the wires are wound together or are in contact with workers is prevented, and potential safety hazards are completely eradicated.

Description

Technical Field

[0001] The utility model relates to the technical field of power frequency withstand voltage test, in particular to a power frequency withstand voltage test device. Background Art

[0002] The power frequency withstand voltage test device is widely used as a basic test equipment in power stations, power supply and distribution systems, scientific research institutions, etc., for conducting insulation strength tests on various electrical products, electrical components, insulating materials, etc. under specified voltages, capable of evaluating the insulation level of products, detecting insulation defects of test specimens, and measuring the ability of overvoltage.

[0003] In the prior art, the power frequency withstand voltage test of electrical equipment is carried out by connecting a 220V or 380V power frequency power supply to the primary winding of a high-voltage test transformer. According to the principle of electromagnetic induction, the required test high-voltage value is obtained, and then this voltage is connected to the electrical equipment to be tested through a wire, so as to evaluate the withstand voltage ability of the electrical equipment under the specified voltage. To ensure safety, the transformer needs to be placed in an insulating box, and the wire is output from the insulating box to connect to the electrical equipment to be tested. However, different electrical equipment has different specifications, and the required wire lengths are also different. Since it is difficult to organize the wires, if the wires are too long, they are prone to tangle together or come into contact with the staff, posing a safety hazard. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a power frequency withstand voltage test device, which can organize the wires through a wire winding machine, and guide the wires to be output through a lead wire mechanism to connect to the electrical equipment, preventing the wires from tangling together or coming into contact with the staff, and eliminating potential safety hazards.

[0005] A power frequency withstand voltage test device according to the utility model includes a box body, a transformer, a wire, a wire winding machine, and a lead wire mechanism. The box body is provided with an open accommodation cavity, and the box body is provided with a door panel to close or open the accommodation cavity; the transformer is installed in the accommodation cavity; one end of the wire is electrically connected to the transformer, and the other end of the wire is output from the accommodation cavity and electrically connected to the electrical equipment; the wire winding machine is installed in the accommodation cavity, and the wire winding machine is used for winding the wire; the lead wire mechanism is arranged in the accommodation cavity, one end of the wire is connected to the lead wire mechanism, and the lead wire mechanism is used for guiding the wire to be output from the accommodation cavity.

[0006] The power frequency withstand voltage test device according to the above embodiments of the utility model has at least the following beneficial effects:

[0007] When the power frequency withstand voltage test device provided by the embodiment of the utility model is in use, the transformer and the winding machine are installed in the box to ensure that no harm is caused to the surrounding personnel when the power leaks. When the power frequency withstand voltage test device is needed for the electrical equipment, the 220V or 380V power frequency power supply is first connected to the primary winding of the transformer, and the required test high voltage voltage value is obtained according to the principle of electromagnetic induction. The voltage is then connected to the electrical equipment to be tested through a wire, so as to assess the withstand voltage capacity of the electrical equipment under the specified voltage. At the same time, the wire is wound and arranged by the winding machine, and for electrical equipment of different specifications, the wires of different lengths are guided by the lead mechanism to output. While meeting the test requirements of different electrical equipment, it can prevent the wires from being entangled or coming into contact with the staff, thereby eliminating safety hazards.

[0008] According to some embodiments of the utility model, the wire guide mechanism includes a first pulley and a second pulley of a fixed bracket, the fixed bracket is fixedly connected to the side wall of the accommodating cavity, the first pulley and the second pulley are both rotatably connected to the fixed bracket, the first pulley and the second pulley are vertically arranged, and there is a gap between the first pulley and the second pulley to form a wire threading hole, the box body is provided with a through groove connected to the accommodating cavity, the wire threading hole is connected to the through groove, the wire is passed through the wire threading hole, and the first pulley and the second pulley respectively press the two sides of the wire.

[0009] According to some embodiments of the utility model, the first pulley is provided with a first rotating shaft, and the first rotating shaft is rotatably connected to the fixed bracket, the second pulley is provided with a second rotating shaft, and the fixed bracket is rotatably connected to the fixed bracket, the guide mechanism also includes an elastic member, one end of the elastic member is connected to the fixed bracket, and the other end of the elastic member is connected to a side of the second pulley away from the first pulley, the elastic member can force the second pulley to approach the first pulley, and sliding grooves are provided on opposite sides of the fixed bracket, and the two sliding grooves are symmetrically arranged on both sides of the second pulley, and the sliding grooves extend in a vertical direction, and the two ends of the second rotating shaft are respectively inserted into the sliding grooves.

[0010] According to some embodiments of the present invention, the elastic member includes a spring, one end of the spring is fixedly connected to the fixing bracket, and the other end of the spring abuts against a side of the second pulley away from the first pulley.

[0011] According to some embodiments of the utility model, the lead mechanism also includes a fixing plate, which is arranged at the opening of the accommodating cavity, the fixing plate is fixedly connected to the box body, the fixing bracket is fixedly connected to the inner side of the fixing plate, and the fixing plate is provided with the through groove.

[0012] According to some embodiments of the present utility model, the transformer is installed on the bottom wall of the accommodating cavity, the winding machine is installed on the top wall of the accommodating cavity through a connecting structure, and the position of the fixing plate is adapted to that of the winding machine.

[0013] According to some embodiments of the present utility model, the connecting structure includes a connecting bracket and two insulators. The winding machine is fixedly connected to the connecting bracket. One end of the insulator is fixedly connected to the top wall of the accommodating cavity, and the other end of the insulator is fixedly connected to the connecting bracket. The two insulators are arranged oppositely on both sides of the connecting bracket.

[0014] According to some embodiments of the present utility model, a live sensor is provided on the side wall of the accommodating cavity. The live sensor is located between the transformer and the winding machine. The live sensor is used to detect whether the inside of the box is live. A live display is provided on the outer wall of the box, and the live display is electrically connected to the live sensor.

[0015] According to some embodiments of the present utility model, the door panel is located below the fixing plate. One side of the door panel is hinged to the box body, and the other side of the door panel is connected to the box body through an electronic door lock.

[0016] According to some embodiments of the present utility model, the electronic door lock includes an XG07C electric control lock and a DSNAMZ electromagnetic lock. The XG07C electric control lock is installed on the side wall of the accommodating cavity, and the DSNAMZ electromagnetic lock is installed on the inner side of the door panel.

[0017] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 is a schematic structural diagram of a power frequency withstand voltage test device according to some embodiments of the present utility model;

[0020] Figure 2 is a partial structural diagram of a lead mechanism according to some embodiments of the present utility model;

[0021] Figure 3 is another partial structural diagram of a lead mechanism according to some embodiments of the present utility model;

[0022] Figure 4 is a partial structural diagram of a power frequency withstand voltage test device according to some embodiments of the present utility model.

[0023] Among them, the reference signs are as follows:

[0024] Cabinet body 100; door panel 110; XG07C electric control lock 120; DSNAMZ electromagnetic lock 130;

[0025] Transformer 200;

[0026] Wire winding machine 300; connecting bracket 310; insulator 320;

[0027] Lead wire mechanism 400; fixed bracket 410; chute 411; first pulley 420; first rotating shaft 421; second pulley 430; second rotating shaft 431; wire threading hole 440; spring 450; fixing plate 460; through groove 461;

[0028] Live wire sensor 500; live wire indicator 510. Detailed implementation manners

[0029] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0030] In the description of the present utility model, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0031] In the description of the present utility model, the meaning of "a number of" is one or more, the meaning of "a plurality of" is two or more, "greater than", "less than", "exceeding", etc. are understood as not including the present number, and "above", "below", "within", etc. are understood as including the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or the sequence relationship of the indicated technical features.

[0032] In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0033] Refer to Figure 1, A power frequency withstand voltage test device proposed according to the present utility model includes a box body 100, a transformer 200, a wire, a wire winding machine 300 and a lead wire mechanism 400. The box body 100 is provided with an open accommodation cavity, and the box body 100 is provided with a door panel 110 to close or open the accommodation cavity; the transformer 200 is installed in the accommodation cavity; one end of the wire is electrically connected to the transformer 200, and the other end of the wire outputs from the accommodation cavity and is electrically connected to an electrical device; the wire winding machine 300 is installed in the accommodation cavity, and the wire winding machine 300 is used for winding the wire; the lead wire mechanism 400 is arranged in the accommodation cavity, one end of the wire is connected to the lead wire mechanism 400, and the lead wire mechanism 400 is used for guiding the wire to output from the accommodation cavity.

[0034] Specifically, when the power frequency withstand voltage test device provided by the embodiment of the present utility model is in use, the transformer 200 and the wire winding machine 300 are installed in the box body 100 to ensure that no harm will be caused to surrounding personnel in case of power leakage. When a power frequency withstand voltage test is to be performed on an electrical device, first connect a 220V or 380V power frequency power supply to the primary winding of the transformer 200, and obtain the required test high voltage value according to the principle of electromagnetic induction. Then connect this voltage to the electrical device to be tested through the wire, so as to test the withstand voltage ability of the electrical device under the specified voltage. At the same time, the wire is wound and sorted by the wire winding machine 300. For electrical devices of different specifications, different lengths of wires are output through the guidance of the lead wire mechanism 400. While meeting the test requirements of different electrical devices, it can prevent the wires from being wound together or contacting the staff, eliminating potential safety hazards.

[0035] Refer to Figure 1 and Figure 2 , According to some embodiments of the present utility model, the lead wire mechanism 400 includes a fixed bracket 410, a first pulley 420 and a second pulley 430. The fixed bracket 410 is fixedly connected to the side wall of the accommodation cavity. The first pulley 420 and the second pulley 430 are both rotatably connected to the fixed bracket 410. The first pulley 420 and the second pulley 430 are arranged vertically. There is a gap between the first pulley 420 and the second pulley 430 to form a wire passing hole 440. The box body 100 is provided with a through groove 461 communicating with the accommodation cavity. The wire passing hole 440 communicates with the through groove 461. The wire passes through the wire passing hole 440, and the first pulley 420 and the second pulley 430 respectively press both sides of the wire.

[0036] Specifically, by pressing both sides of the wire through the first pulley 420 and the second pulley 430 respectively, the wire is output along the wire threading hole 440 between the first pulley 420 and the second pulley 430, so that the wire can be guided out and the position of the wire can be fixed for the convenience of the staff. At the same time, the vertical arrangement of the first pulley 420 and the second pulley 430 can prevent the wire from slipping off. When the wire is output along the wire threading hole 440, the wire can drive the first pulley 420 and the second pulley 430 to rotate, which can reduce the friction between the wire and the first pulley 420 and the second pulley 430, so that the wire is output more smoothly.

[0037] Further, referring to Figure 3 , according to some embodiments of the present invention, the first pulley 420 is provided with a first rotating shaft 421, the first rotating shaft 421 is rotatably connected to the fixed bracket 410, the second pulley 430 is provided with a second rotating shaft 431, and the fixed bracket 410 is rotatably connected to the fixed bracket 410. The wire guiding mechanism 400 further includes an elastic member. One end of the elastic member is connected to the fixed bracket 410, and the other end of the elastic member is connected to the side of the second pulley 430 away from the first pulley 420. The elastic member can force the second pulley 430 to approach the first pulley 420. Both opposite sides of the fixed bracket 410 are provided with sliding grooves 411, and the two sliding grooves 411 are symmetrically arranged on both sides of the second pulley 430. The sliding grooves 411 extend in the vertical direction, and both ends of the second rotating shaft 431 are respectively inserted into the sliding grooves 411.

[0038] Specifically, under different test requirements, wires of different specifications will be used. In order to be applicable to wires of different thicknesses, an elastic member can be provided on the side of the second pulley 430 away from the first pulley 420, and the elastic member is used to force the second pulley 430 to approach the first pulley 420. When a thicker wire passes through the wire threading hole 440, the wire will push the second pulley 430 to move away from the first pulley 420 against the elastic force of the elastic member. The two ends of the second pulley 430 respectively move along the two symmetric sliding grooves 411 through the second rotating shaft 431, which can make the movement of the second pulley 430 smoother and prevent the wire from slipping off.

[0039] Preferably, referring to Figure 3 , according to some embodiments of the present invention, the elastic member includes a spring 450. One end of the spring 450 is fixedly connected to the fixed bracket 410, and the other end of the spring 450 abuts against the side of the second pulley 430 away from the first pulley 420, so as to force the second pulley 430 to approach the first pulley 420 through the elastic force of the spring 450. Further, the specification of the spring 450 can be determined according to the actual situation and will not be specifically limited here.

[0040] Further, referring to Figure 1, according to some embodiments of the present utility model, the lead wire mechanism 400 further includes a fixing plate 460. The fixing plate 460 is arranged at the opening of the accommodating cavity, which is convenient for the staff to use and reduces the processing of the box body 100, thus reducing the processing cost. The fixing plate 460 can be fixedly connected to the box body 100 through fasteners such as bolts. The fixing bracket 410 can be fixedly connected to the inner side of the fixing plate 460 through fasteners such as bolts. The fixing plate 460 is provided with a through groove 461.

[0041] Preferably, referring to Figure 1 , according to some embodiments of the present utility model, the transformer 200 is installed on the bottom wall of the accommodating cavity, the winding machine 300 is installed on the top wall of the accommodating cavity through a connecting structure, and the position of the fixing plate 460 is adapted to the winding machine 300.

[0042] Furthermore, referring to Figure 1 , according to some embodiments of the present utility model, the connecting structure includes a connecting bracket 310 and two insulators 320. The winding machine 300 is fixedly connected to the connecting bracket 310. One end of the insulator 320 is fixedly connected to the top wall of the accommodating cavity, and the other end of the insulator 320 is fixedly connected to the connecting bracket 310, thereby preventing electric leakage. The two insulators 320 are arranged opposite to each other on both sides of the connecting bracket 310 to enhance the stability of the connecting structure.

[0043] Furthermore, referring to Figure 1 , according to some embodiments of the present utility model, a live sensor 500 is provided on the side wall of the accommodating cavity. The live sensor 500 is located between the transformer 200 and the winding machine 300. The live sensor 500 is used to detect whether the inside of the box body 100 is live. A live display 510 is provided on the outer wall of the box body 100, and the live display 510 is electrically connected to the live sensor 500. Specifically, during or after the test, the live sensor 500 can detect whether the inside of the box body 100 is live and transmit the detection result to the live display 510 for display, so that the staff can know whether the inside of the box body 100 is safe, improving the safety.

[0044] Furthermore, referring to Figure 1 , according to some embodiments of the present utility model, the door panel 110 is located below the fixing plate 460. One side of the door panel 110 is hinged to the box body 100, and the other side of the door panel 110 is connected to the box body 100 through an electronic door lock, thereby improving the safety.

[0045] Furthermore, referring to Figure 4, according to some embodiments of the present utility model, the electronic door lock includes an XG07C electric control lock 120 and a DSNAMZ electromagnetic lock 130. The XG07C electric control lock 120 is installed on the side wall of the accommodation cavity, and the DSNAMZ electromagnetic lock 130 is installed on the inner side of the door panel 110. Specifically, the XG07C electric control lock 120 is internally provided with a micro switch short-circuit signal detection. When locked, it is turned on, and when unlocked, it is turned off, which can real-time feedback the door opening and closing state. And it is internally provided with a high-strength spring push rod to increase the opening rebound force, and can smoothly push open the door panel 110. On the other hand, the XG07C electric control lock 120 is designed with a mechanical unlocking device, and can also be unlocked by pressing the lock rod in the case of power failure. The DSNAMZ electromagnetic lock 130 is an electric control mechanism interlocking device for preventing electrical misoperation of high-voltage switchgear. By setting the XG07C electric control lock 120 and the DSNAMZ electromagnetic lock 130, the safety performance is further improved, the situation of randomly opening the door during the test is avoided, and the personal safety of the staff is guaranteed.

[0046] In the embodiments of the present utility model, the connecting member can be a clip or a plate member of other shapes, and the connection method can be a snap connection, a screw fixation or a welding, etc., which will not be elaborated here.

[0047] The above has described the embodiments of the present utility model in detail with reference to the drawings, but the present utility model is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art in the said technical field, various changes can also be made without departing from the purpose of the present utility model.

Claims

1. A power frequency withstand voltage test device, characterized in that: include: A box body, wherein the box body is provided with an open accommodating cavity, and the box body is provided with a door panel to close or open the accommodating cavity; A transformer, installed in the accommodating cavity; A wire, one end of which is electrically connected to the transformer, and the other end of which is output from the accommodating cavity and electrically connected to the electrical device; A wire winding machine, installed in the accommodating chamber, and used for winding the wire; A wire guide mechanism is disposed in the accommodating cavity, one end of the wire is connected to the wire guide mechanism, and the wire guide mechanism is used to guide the wire to be output from the accommodating cavity.

2. The power frequency withstand voltage test device according to claim 1, characterized in that: The wire guiding mechanism comprises a first pulley and a second pulley of a fixed bracket, the fixed bracket is fixedly connected to the side wall of the accommodating cavity, the first pulley and the second pulley are both rotatably connected to the fixed bracket, the first pulley and the second pulley are vertically arranged, a gap is provided between the first pulley and the second pulley to form a threading hole, the box body is provided with a through groove connected to the accommodating cavity, the threading hole is connected to the through groove, the wire is passed through the threading hole, and the first pulley and the second pulley respectively press the two sides of the wire.

3. The power frequency withstand voltage test device according to claim 2, characterized in that: The first pulley is provided with a first rotating shaft, and the first rotating shaft is rotatably connected to the fixed bracket, the second pulley is provided with a second rotating shaft, and the fixed bracket is rotatably connected to the fixed bracket, the lead mechanism also includes an elastic member, one end of the elastic member is connected to the fixed bracket, and the other end of the elastic member is connected to a side of the second pulley away from the first pulley, the elastic member can force the second pulley to approach the first pulley, and the opposite sides of the fixed bracket are provided with sliding grooves, the two sliding grooves are symmetrically arranged on both sides of the second pulley, the sliding grooves extend in a vertical direction, and the two ends of the second rotating shaft are respectively inserted in the sliding grooves.

4. The power frequency withstand voltage test device according to claim 3, characterized in that: The elastic member comprises a spring, one end of the spring is fixedly connected to the fixing bracket, and the other end of the spring abuts against a side of the second pulley away from the first pulley.

5. The power frequency withstand voltage test device according to claim 2, characterized in that: The lead-in mechanism further comprises a fixing plate, which is arranged at the opening of the accommodating cavity, the fixing plate is fixedly connected to the box body, the fixing bracket is fixedly connected to the inner side of the fixing plate, and the fixing plate is provided with the through groove.

6. The power frequency withstand voltage test device according to claim 5, characterized in that: The transformer is mounted on the bottom wall of the accommodating cavity, the winding machine is mounted on the top wall of the accommodating cavity through a connecting structure, and the position of the fixing plate is adapted to the winding machine.

7. The power frequency withstand voltage test device according to claim 6, characterized in that: The connection structure includes a connection bracket and two insulators. The winding machine is fixedly connected to the connection bracket. One end of the insulator is fixedly connected to the top wall of the accommodating cavity, and the other end of the insulator is fixedly connected to the connection bracket. The two insulators are arranged oppositely on both sides of the connection bracket.

8. The power frequency withstand voltage test device according to claim 6, characterized in that: A charged sensor is disposed on the side wall of the accommodating cavity, and the charged sensor is located between the transformer and the winding machine. The charged sensor is used to detect whether the box is charged. A charged display is disposed on the outer wall of the box, and the charged display is electrically connected to the charged sensor.

9. The power frequency withstand voltage test device according to claim 6, characterized in that: The door panel is located below the fixed plate, one side of the door panel is hinged to the box body, and the other side of the door panel is connected to the box body through an electronic door lock.

10. The power frequency withstand voltage test device according to claim 9, characterized in that: The electronic door lock comprises an XG07C electric control lock and a DSNAMZ electromagnetic lock. The XG07C electric control lock is installed on the side wall of the accommodating cavity, and the DSNAMZ electromagnetic lock is installed on the inner side of the door panel.

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