Multi-functional DC electroscope

Abstract

The utility model provides a kind of multifunctional direct current electroscope, including insulated operating lever, the host computer and fuse tube seat are installed on the insulated operating lever, control circuit for self-checking, electricity testing and discharging to equipment is provided in the host computer, the fuse tube seat is provided with fuse, the fuse is connected with control circuit, the end of fuse tube seat away from host computer is provided with L type electricity testing end head electrically connected with fuse, the host computer surface is provided with digital voltmeter, the lower part of host computer is connected with double-end ground wire, the handle of insulated operating lever is provided with remote control discharge button. The utility model structure is simple, reasonable in design, has live check function, make up the shortcoming of no live equipment for checking in field, can directly reflect the live condition and specific value of equipment, can effectively release residual electric quantity existing in direct current system, it is convenient and flexible to use, with higher practical value.

Description

Technical Field

[0001] This utility model relates to the field of electroscope technology, specifically a multifunctional DC electroscope. Background Technology

[0002] Traditional DC detectors are widely used and involve multiple disciplines. However, due to the limitations of professional knowledge, there are many irregularities in the use of detectors, which increases electrical safety risks.

[0003] Existing electroscopes may have the following problems:

[0004] (1) Traditional voltage detectors only have sound and light alarms. Their self-test function is only for testing the integrity of the sound and light circuit, and cannot represent the working condition of the voltage detector (such as damage to the sensing element or loose internal wiring, which makes it impossible to identify the power status of the device).

[0005] (2) According to the "Electric Power Safety Work Regulations GB 26859", "6.3.2 When directly testing for voltage, a voltage tester of the corresponding voltage level shall be used to test for voltage at the grounding point of the equipment phase by phase (or pole by pole for DC lines). Before testing for voltage, the voltage tester shall be verified to be in good working order on live equipment." However, most sites do not have live equipment, so it is impossible to verify whether the voltage tester is normal.

[0006] (3) Improper operation may lead to unreliable connection of the voltage tester or grounding terminal, which may cause misjudgment and result in live operation (such as hanging a ground wire on the live wire).

[0007] (4) Due to the capacitive effect of the power supply system equipment (cables, contact rails / networks, etc.), the equipment may carry residual electricity after a power outage. Traditional voltage detectors cannot identify this and do not have a discharge function. Operators need to spend a lot of time and energy to verify the power outage and wait for the system to self-discharge, wasting valuable window time and resulting in low work efficiency. Utility Model Content

[0008] To address the shortcomings of the existing technology, this utility model provides a multifunctional DC detector with a live-line verification function, which can intuitively reflect the live status and specific values ​​of the equipment and effectively release the residual charge in the DC system.

[0009] The technical solution provided by this utility model is as follows: A multifunctional DC detector includes an insulated operating rod, on which a main unit and a fuse holder are mounted. The main unit contains a control circuit for self-testing, voltage detection, and discharging equipment. A fuse is installed in the fuse holder and connected to the control circuit. An L-shaped voltage detection terminal, electrically connected to the fuse, is provided at the end of the fuse holder away from the main unit. A digital display voltmeter is provided on the surface of the main unit. Two grounding ports are provided at the lower part of the main unit, and a double-ended grounding wire is connected to the grounding ports. A remote control discharge button is provided at the handle of the insulated operating rod.

[0010] Furthermore, a self-test port is provided on both the main unit and the fuse holder. When the DC detector performs a self-test, the self-test port is connected via a test line.

[0011] Furthermore, the control circuit includes a high-voltage generator and an audible and visual alarm. The high-voltage generator is used to emit a simulated high-voltage signal, and the high-voltage generator is connected to the audible and visual alarm for self-testing of the voltage detector.

[0012] Furthermore, the control circuit also includes a discharge start relay, a discharge control relay, and a discharge resistor connected in series. The discharge resistor is connected in parallel with the audible and visual alarm, and the remote control discharge button is electrically connected to the discharge start relay to control the discharge of the equipment.

[0013] Furthermore, the host is also equipped with a cooling fan and a thermal protection relay for heat dissipation and overheat protection of the electrical components inside the host.

[0014] Furthermore, the main unit has a power button and a verification button on the front, a power supply inside the main unit, and a charging port and a power display screen on the side of the main unit.

[0015] Furthermore, it also includes a charger, which is used to connect to the charging port and charge via an external power source.

[0016] Furthermore, the L-shaped voltage testing terminal is equipped with a contact status indicator light and a lighting lamp, and the output terminal of the L-shaped voltage testing terminal is electrically connected to the input terminal of the digital display voltmeter.

[0017] Furthermore, the host is also equipped with a discharge operation indicator light.

[0018] Furthermore, the insulating operating rod is a retractable insulating operating rod.

[0019] The beneficial effects of this utility model are:

[0020] (1) This utility model has a live-line verification function, which makes up for the disadvantage of not having live-line equipment for verification on site.

[0021] (2) This utility model can intuitively reflect the electrical status and specific values ​​of the equipment, making it easy to determine whether the equipment is under normal voltage or has residual electrical charge.

[0022] (3) This utility model can effectively release the residual power in the DC system. In most cases, the residual power can be released within 1 minute.

[0023] (4) The top of this utility model is equipped with a position status indicator light and a lighting lamp, which allows the operator to more intuitively observe the contact between the voltage detector and the equipment.

[0024] (5) This utility model has overheat protection of 100℃ and overcurrent protection of 1A, which effectively avoids accidental discharge and improves safety. Attached Figure Description

[0025] Figure 1 This is a front structural diagram of the present invention;

[0026] Figure 2 This is a side view of the structure of this utility model;

[0027] Figure 3 This is the electrical schematic diagram of this utility model;

[0028] In the diagram: 1—Insulated operating rod, 2—Main unit, 3—Fuse holder, 4—Fuse, 5—L-type voltage tester, 6—Digital voltmeter, 7—Grounding port, 8—Double-ended grounding wire, 9—Remote control discharge button, 10—Self-test port, 11—High voltage generator, 12—Audible and visual alarm, 13—Discharge start relay, 14—Discharge control relay, 15—Discharge resistor, 16—Cooling fan, 17—Thermal protection relay, 18—Power button, 19—Verification button, 20—Charging port, 21—Power display screen, 22—Discharge working indicator light. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments. The drawings are drawn in a simplified manner and are only used to clearly and concisely illustrate the embodiments of the present invention. The technical solutions shown in the drawings below are specific solutions of embodiments of the present invention and are not intended to limit the scope of the claimed present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] like Figure 1-3 The multifunctional DC detector shown includes an insulated operating rod 1, on which a main unit 2 and a fuse holder 3 are mounted. The main unit 2 contains a control circuit for self-testing, voltage detection, and discharging equipment. The fuse holder 3 contains a fuse 4, which is connected to the control circuit. An L-shaped voltage detection terminal 5, electrically connected to the fuse 4, is located at the end of the fuse holder 3 away from the main unit 2. A digital display voltmeter 6 is mounted on the surface of the main unit 2. Two grounding ports 7 are located at the lower part of the main unit 2, and a double-ended grounding wire 8 is connected to the grounding ports 7. A remote control discharge button 9 is located at the handle of the insulated operating rod 1.

[0032] The main unit 2 and the fuse holder 3 are each provided with a self-test port 10. When the DC detector performs a self-test, the self-test port 10 is connected through a test line.

[0033] The control circuit includes a high-voltage generator 11 and an audible and visual alarm 12. The high-voltage generator 11 is used to emit a simulated high-voltage signal. The high-voltage generator 11 is connected to the audible and visual alarm 12 for self-testing of the voltage detector. The control circuit also includes a discharge start relay 13, a discharge control relay 14, and a discharge resistor 15 connected in series. The discharge resistor 15 is connected in parallel with the audible and visual alarm 12. The remote discharge button 9 is electrically connected to the discharge start relay 13 for controlling the discharge of the equipment. The main unit 2 is also equipped with a discharge operation indicator light 22.

[0034] The host 2 is also equipped with a cooling fan 16 and a thermal protection relay 17, which are used to dissipate heat and protect the electrical components inside the host from overheating.

[0035] The main unit 2 has a power button 18 and a verification button 19 on its front. A power supply is installed inside the main unit 2, and a charging port 20 and a power display screen 21 are located on its side. The electroscope also includes a charger, which is connected to the charging port 20 for charging via an external power source.

[0036] The L-shaped voltage testing terminal 5 is equipped with a position status indicator light and a lighting lamp. The output terminal of the L-shaped voltage testing terminal 5 is electrically connected to the input terminal of the digital display voltmeter 6. The insulating operating rod 1 is a retractable insulating operating rod.

[0037] In specific use, this utility model,

[0038] (1) Install the main unit 2 onto the insulating operating rod 1, and connect the ground wire to the grounding terminal (note that the ground wire has two sockets).

[0039] (2) Connect the self-test port 10 with the test cable, and clamp the two grounding wire clips to the ground grid (note that the two clips should be clamped separately and not touching each other). Press the power button 18 to turn on the power. The digital display voltmeter 6 displays 0000. Press and hold the calibration button 19. The voltmeter displays 750 (±10) and at the same time, an audible and visual alarm is sounded. At this time, be careful not to touch the metal part on the top of the device. This indicates that the voltage detector is in normal self-test mode and can be used.

[0040] (3) Release the verification button 19, turn off the power, remove the test line of the self-test port 10, press down the L-shaped voltage test terminal 5, the contact status indicator light will light up, and it will turn off when released.

[0041] (4) Use the voltage tester to test the equipment. Touch the L-shaped voltage tester end 5 to the equipment being tested. The contact status indicator light will light up. At this time, the equipment voltage can be read by the digital display voltmeter 6. If the display is 0 and the voltage tester does not emit an audible or visual alarm, it means that the equipment is not powered.

[0042] If the voltage detector emits an audible and visual alarm and the voltmeter displays a value, it indicates that the equipment is energized. If the voltage reading gradually decreases, it indicates that the equipment has residual charge. Press the remote discharge button 9 to quickly release the residual charge. When the voltage reading is 0 and the voltage detector stops emitting audible and visual alarms, it indicates that the discharge is complete and the next step can be performed.

[0043] If the voltage display shows no decreasing trend, it is determined that the equipment is under constant voltage, and the energization status needs to be further verified.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multifunctional DC detector, comprising an insulated operating rod (1), characterized in that, The insulating operating rod (1) is equipped with a main unit (2) and a fuse holder (3). The main unit (2) is equipped with a control circuit for self-testing, voltage detection and discharging of the equipment. The fuse holder (3) is equipped with a fuse (4) and is connected to the control circuit. The end of the fuse holder (3) away from the main unit (2) is equipped with an L-shaped voltage detection terminal (5) that is electrically connected to the fuse (4). The main unit (2) is equipped with a digital display voltmeter (6). The lower part of the main unit (2) is equipped with two grounding ports (7). The grounding ports (7) are connected with a double-ended grounding wire (8). The handle of the insulating operating rod (1) is equipped with a remote discharge button (9).

2. The multifunctional DC detector according to claim 1, characterized in that, The host (2) and fuse holder (3) are respectively provided with a self-test port (10). When the DC detector performs a self-test, the self-test port (10) is connected through the test line.

3. The multifunctional DC detector according to claim 1, characterized in that, The control circuit includes a high voltage generator (11) and an audible and visual alarm (12). The high voltage generator (11) is used to emit a simulated high voltage signal. The high voltage generator (11) is connected to the audible and visual alarm (12) and is used to perform self-testing on the voltage detector.

4. The multifunctional DC detector according to claim 3, characterized in that, The control circuit also includes a discharge start relay (13), a discharge control relay (14) and a discharge resistor (15) connected in series. The discharge resistor (15) is connected in parallel with the audible and visual alarm (12). The remote discharge button (9) is electrically connected to the discharge start relay (13) and is used to control the discharge of the equipment.

5. The multifunctional DC detector according to claim 1, characterized in that, The host (2) is also equipped with a cooling fan (16) and a thermal protection relay (17) for heat dissipation and overheat protection of electrical components in the host.

6. The multifunctional DC detector according to claim 1, characterized in that, The host (2) has a power button (18) and a verification button (19) on the front. The host (2) has a power supply inside. The host (2) has a charging port (20) and a power display screen (21) on the side.

7. A multifunctional DC detector according to claim 6, characterized in that, It also includes a charger for connecting to the charging port (20) and charging via an external power source.

8. The multifunctional DC detector according to claim 1, characterized in that, The L-shaped voltage tester (5) is equipped with a contact status indicator light and a lighting lamp. The output terminal of the L-shaped voltage tester (5) is electrically connected to the input terminal of the digital display voltmeter (6).

9. The multifunctional DC detector according to claim 1, characterized in that, The host (2) is also equipped with a discharge working indicator light (22).

10. The multifunctional DC detector according to claim 1, characterized in that, The insulating operating rod (1) is a retractable insulating operating rod.

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