Direct-current high-voltage generator convenient to maintain

Abstract

The utility model discloses a direct-current high-voltage generator convenient to maintain, which relates to the technical field of electrical equipment detection and comprises a control cabinet and a high-voltage cylinder, the control cabinet and the high-voltage cylinder are connected through a high-voltage connecting wire and a grounding wire, and the end part of the high-voltage cylinder is also fixedly connected with a current-limiting resistor. The other end of the current-limiting resistor is fixedly connected with a microammeter; the control case comprises a control table, the bottom of the control table is fixedly connected with a top limiting frame, a conveniently-disassembled shell is symmetrically arranged below the top limiting frame, and a supporting base is installed below the conveniently-disassembled shell; according to the direct-current high-voltage generator, through the two symmetrically-arranged conveniently-detached shells, a worker can conveniently and rapidly detach the shells of the direct-current high-voltage generator, no extra special tool is needed in the detaching process, the position of a wire does not need to be noticed additionally in the detaching process, the wire is prevented from being damaged in the detaching process, and then the detaching efficiency in the maintaining process is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment testing technology, specifically a DC high-voltage generator that is easy to maintain. Background Technology

[0002] DC high voltage generators are mainly used to conduct withstand voltage tests on the insulation performance of electrical equipment. In power systems, the insulation materials of equipment such as power cables, capacitors, and high voltage switches are subjected to high voltage. They can also be used to measure the leakage current of electrical equipment under DC high voltage. When a DC high voltage is applied to electrical equipment, a certain current will flow through the insulating medium. This current is the leakage current.

[0003] A DC high-voltage generator primarily produces a stable DC high voltage by transforming and processing a series of power frequency AC power supplies. Generally, a transformer is first used to boost the input low-voltage power frequency AC power to a higher AC voltage. Then, a rectifier circuit converts the AC voltage to DC voltage. Finally, filtering and other processes are used to make the output DC voltage more stable and smooth, meeting the requirements of different high-voltage tests.

[0004] However, in practice, it has been noted that the outer shell of a DC high-voltage generator is generally made of a single piece of insulating material. The control panel is not only connected to the shell by a snap-fit ​​structure, but also by bolts. When internal maintenance is required, professionals use special tools to disassemble the shell and control panel. When removing the control panel, care must be taken to remove the wires between the panel and the circuit board. The circuit board can only be disassembled after the wires are disconnected. The process is cumbersome and time-consuming, which cannot meet the needs of daily quick maintenance. Utility Model Content

[0005] The purpose of this invention is to provide a DC high-voltage generator that is easy to maintain. It utilizes a frame consisting of a support base, a top limiting frame, and a support rod assembly, combined with a high-voltage generating module divided into two parts, facilitating internal maintenance. Furthermore, it features easily detachable, slidingly openable outer casings on both sides, reducing disassembly time and improving maintenance efficiency. This addresses the technical problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A DC high voltage generator that is easy to maintain includes a control box and a high voltage cylinder. The control box and the high voltage cylinder are connected by a high voltage connection line and a grounding line. A current-limiting resistor is fixedly connected to one end of the high voltage cylinder, and a microammeter is fixedly connected to the other end of the current-limiting resistor.

[0008] The control box includes a control panel, the bottom of which is fixedly connected to a top limiting frame, and below the top limiting frame are symmetrically distributed removable outer shells, with a support base installed below the removable outer shells.

[0009] As a further technical solution of this utility model, the support base and the control panel are provided with support rods in a rectangular array. One end of the support rod is fixedly connected to the support base, and the other end of the support rod passes through the top limiting frame and is fixedly connected to the control panel.

[0010] As a further technical solution of this utility model, the detachable outer shell includes an arc-shaped outer shell, the inner side of which is integrally provided with a strip-shaped slider, and the end of the arc-shaped outer shell is threadedly connected with a locking knob that cooperates with the top limiting frame.

[0011] As a further technical solution of this utility model, the top limiting frame has a hollow frame, which is integrally set at the bottom of the control panel, and the end of the hollow frame is provided with a locking thread hole corresponding to the locking knob, and the locking knob is threadedly engaged with the locking thread hole.

[0012] As a further technical solution of this utility model, the support base has a bottom support plate, a protective frame is integrally provided on the top of the bottom support plate, and the end of the support rod is threadedly connected to the protective frame, while the other end of the support rod is also threadedly connected to the hollow frame.

[0013] As a further technical solution of this utility model, the protective frame and the hollow frame are respectively provided with limiting grooves and positioning grooves corresponding to the strip sliders, and the strip sliders at the corresponding positions of the arc-shaped shell are slidably connected to the limiting grooves and positioning grooves respectively.

[0014] As a further technical solution of this utility model, a high-voltage generating module is fixedly connected to the bottom of the control panel and the upper part of the bottom support plate, and the high-voltage generating module is located inside the hollow frame and the bottom support plate, respectively.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model uses two symmetrically arranged easy-to-disassemble housings to facilitate workers to quickly disassemble the housing of the DC high voltage generator. The two ends of the easy-to-disassemble housings slide and engage with the support base and the top limiting frame, respectively. No additional special tools are required for disassembly, and no extra attention needs to be paid to the position of the wires during disassembly, thus preventing damage to the wires during the disassembly process and improving the disassembly efficiency during maintenance.

[0017] This utility model, through the cooperation of the top limiting frame and the support base, can divide the circuit part of the entire DC high voltage generator into two parts, and install them on the inner side of the hollow frame and the protective frame respectively. Moreover, a support rod is provided between the hollow frame and the protective frame, so there is no need to worry about damaging the wires during disassembly, thereby improving maintenance efficiency.

[0018] This utility model has heat dissipation grooves on the side of the arc-shaped shell, and a cooling fan that works with the heat dissipation grooves is installed inside, which can fully dissipate heat from the two-part circuit and improve the heat dissipation effect of the DC high voltage generator during use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model in use.

[0020] Figure 2 This utility model Figure 1 A partial structural diagram.

[0021] Figure 3 This utility model Figure 2 A schematic diagram of the split structure.

[0022] Figure 4 This utility model Figure 3 A schematic diagram of the bottom structure.

[0023] Figure 5 This is a three-dimensional structural diagram of the top limiting frame in this utility model.

[0024] Figure 6 This is a three-dimensional structural diagram of the easily detachable outer shell of this utility model.

[0025] Figure 7 This is a three-dimensional structural diagram of the support base in this utility model.

[0026] In the picture:

[0027] Control panel-1, high voltage connection line-2, grounding wire-3, high voltage cylinder-4, current limiting resistor-41, microammeter-42, easy-to-remove housing-5, arc-shaped housing-51, strip slider-52, locking knob-53, heat dissipation slot-54, cooling fan-55, support base-6, bottom support plate-61, protective frame-62, limit slide groove-63, support rod-7, top limit frame-8, hollow frame-81, positioning slide groove-82, locking threaded hole-83. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-7 This utility model provides a DC high voltage generator that is easy to maintain, including a control box and a high voltage cylinder 4. The control box and the high voltage cylinder 4 are connected by a high voltage connection line 2 and a grounding line 3. A current limiting resistor 41 is fixedly connected to one end of the high voltage cylinder 4, and a microammeter 42 is fixedly connected to the other end of the current limiting resistor 41.

[0030] The control box includes a control panel 1. A top limiting frame 8 is fixedly connected to the bottom of the control panel 1. A symmetrically distributed removable outer shell 5 is provided below the top limiting frame 8. A support base 6 is installed below the removable outer shell 5.

[0031] In this embodiment, support rods 7 are arranged in a rectangular array between the support base 6 and the control panel 1. One end of the support rod 7 is fixedly connected to the support base 6, and the other end of the support rod 7 passes through the top limiting frame 8 and is fixedly connected to the control panel 1.

[0032] In this embodiment, the detachable outer shell 5 includes an arc-shaped outer shell 51. The inner side of the arc-shaped outer shell 51 is integrally provided with a strip-shaped slider 52, and the end of the arc-shaped outer shell 51 is threadedly connected to a locking knob 53 that cooperates with the top limiting frame 8.

[0033] In this embodiment, the top limiting frame 8 has a hollow frame 81, which is integrally disposed at the bottom of the control panel 1, and the end of the hollow frame 81 is provided with a locking threaded hole 83 corresponding to the locking knob 53, and the locking knob 53 is threadedly engaged with the locking threaded hole 83.

[0034] Furthermore, the support base 6 has a bottom support plate 61, and a protective frame 62 is integrally provided on the top of the bottom support plate 61. The end of the support rod 7 is threadedly connected to the protective frame 62, and the other end of the support rod 7 is also threadedly connected to the hollow frame 81.

[0035] More specifically, the protective frame 62 and the hollow frame 81 are respectively provided with limiting grooves 63 and positioning grooves 82 corresponding to the strip sliders 52, and the strip sliders 52 at the corresponding positions of the arc-shaped outer shell 51 are slidably connected to the limiting grooves 63 and positioning grooves 82 respectively.

[0036] In this embodiment, a high-voltage generating module is fixedly connected to the bottom of the control panel 1 and the upper part of the bottom support plate 61, and the high-voltage generating module is located inside the hollow frame 81 and the bottom support plate 61, respectively.

[0037] By adopting the above technical solution, when repairing the inside of the control box, first rotate the locking knob 53. Through the threaded engagement between the locking knob 53 and the locking threaded hole 8, the end of the locking knob 53 is separated from the inside of the locking threaded hole 8. Then, pull the arc-shaped outer shell 51 outward. Since the strip slider 52 in the arc-shaped outer shell 51 slides and engages with the limit slide groove 63 and the positioning slide groove 82 respectively, the arc-shaped outer shells 51 on both sides below the control panel 1 can be quickly removed. Moreover, there is no need to worry about damaging the wires during the disassembly process, thus improving the disassembly efficiency during maintenance.

[0038] In this embodiment, the high voltage generating module includes a boost circuit, a rectifier circuit, a filter circuit, and a control circuit. An external power supply sends low-voltage AC power into the DC high voltage generator. The low-voltage AC power is boosted by the boost circuit and then enters the rectifier circuit.

[0039] More specifically, the rectifier circuit converts AC power into DC power, which is then filtered by the filter circuit to make the output DC voltage closer to the ideal smooth DC state. Finally, through the cooperation of the control circuit and the high-voltage connection line 2, it is sent to the high-voltage cylinder 4.

[0040] In this embodiment, the control panel 1 is equipped with a voltage adjustment knob, a voltage display, a switch, a power socket, an indicator light, a high-voltage interface, and a grounding socket. The ends of the high-voltage connection wire 2 and the grounding wire 3 are respectively connected to the high-voltage interface and the grounding socket.

[0041] The working principle of this utility model is as follows: When in use, first move the DC high voltage generator to the usage position, insert the ends of the high voltage connection wire and the grounding wire 3 into the corresponding high voltage interface and grounding socket respectively, and then fix the other ends of the high voltage connection wire 2 and the grounding wire 3 to the high voltage cylinder 4 respectively. During use, the cooling fan 55 on the side of the arc-shaped outer shell 51 dissipates heat from the high voltage generating module. The external airflow flows from one side to the other side, carrying away the heat generated by the high voltage generating module. When internal maintenance is required, first rotate the locking knob 53. Through the threaded engagement between the locking knob 53 and the locking threaded hole 8, the end of the locking knob 53 is separated from the inside of the locking threaded hole 8. Then pull the arc-shaped outer shell 51 outward. Since the strip slider 52 in the arc-shaped outer shell 51 slides and engages with the limit slide groove 63 and the positioning slide groove 82 respectively, the arc-shaped outer shell 51 on both sides below the control panel 1 can be quickly removed. During the disassembly process, there is no need to worry about damaging the wires, which improves the disassembly efficiency during maintenance. The structure is simple, the operation is very convenient, and the manual labor intensity is effectively reduced.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A DC high-voltage generator that is easy to maintain, characterized in that: Includes a control box and a high-voltage cylinder (4), which are connected by a high-voltage connection line (2) and a grounding line (3). A current-limiting resistor (41) is also fixedly connected to the end of the high-voltage cylinder (4), and a microammeter (42) is fixedly connected to the other end of the current-limiting resistor (41). The control box includes a control panel (1), a top limiting frame (8) is fixedly connected to the bottom of the control panel (1), and a symmetrically distributed removable outer shell (5) is provided below the top limiting frame (8), wherein a support base (6) is installed below the removable outer shell (5).

2. The DC high-voltage generator for easy maintenance according to claim 1, characterized in that: The support base (6) and the control panel (1) are provided with support rods (7) in a rectangular array. One end of the support rod (7) is fixedly connected to the support base (6), and the other end of the support rod (7) passes through the top limiting frame (8) and is fixedly connected to the control panel (1).

3. The DC high-voltage generator for easy maintenance according to claim 2, characterized in that: The removable housing (5) includes an arc-shaped housing (51), with a strip-shaped slider (52) integrally provided on the inner side of the arc-shaped housing (51), and a locking knob (53) that cooperates with the top limiting frame (8) is threaded to the end of the arc-shaped housing (51).

4. The DC high-voltage generator for easy maintenance according to claim 3, characterized in that: The top limiting frame (8) has a hollow frame (81), which is integrally provided at the bottom of the control panel (1). The end of the hollow frame (81) is provided with a locking thread hole (83) corresponding to the locking knob (53), and the locking knob (53) is threadedly engaged with the locking thread hole (83).

5. The DC high-voltage generator for easy maintenance according to claim 4, characterized in that: The support base (6) has a bottom support plate (61), and a protective frame (62) is integrally provided on the top of the bottom support plate (61). The end of the support rod (7) is threaded to the protective frame (62), and the other end of the support rod (7) is also threaded to the hollow frame (81).

6. The easily maintainable DC high-voltage generator according to claim 5, characterized in that: The protective frame (62) and the hollow frame (81) are respectively provided with limiting grooves (63) and positioning grooves (82) corresponding to the strip sliders (52), and the strip sliders (52) at the corresponding positions of the arc-shaped shell (51) are slidably connected to the limiting grooves (63) and positioning grooves (82).

7. The easily maintainable DC high-voltage generator according to claim 6, characterized in that: The bottom of the control panel (1) and the upper part of the bottom support plate (61) are respectively fixedly connected to a high voltage generating module, and the high voltage generating module is located inside the hollow frame (81) and the bottom support plate (61).

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