Portable high-voltage field inspection device

Abstract

The invention relates to a portable high-voltage field inspection device, which comprises a grading ring, a high-voltage arm, a low-voltage arm, a grounding piece, a control assembly and a box body, and is characterized in that the grading ring is used for being connected with a to-be-detected circuit, the two ends of the high-voltage arm are detachably connected with the grading ring and one end of the low-voltage arm respectively, the grounding piece is arranged at the other end of the low-voltage arm, and the control assembly is arranged in the box body. The control assembly is detachably connected with the low-voltage arm and comprises a detection module and a calculation module, the detection module is used for obtaining low voltage of the low-voltage arm, the calculation module is used for determining high voltage of the circuit to be tested according to the low voltage, and the high voltage is used for verifying withstand voltage test voltage; the box body is used for accommodating the grading ring, the high-voltage arm, the low-voltage arm and the control assembly which are separated. The on-site inspection device has portability and an inspection function at the same time, can effectively supervise the high voltage accuracy of an on-site AC voltage withstand test, ensures the voltage accuracy of the voltage withstand test, and improves the power supply safety.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of circuit detection, in particular to a portable high-voltage on-site inspection device. BACKGROUND

[0002] Power equipment applied to the field needs to be subjected to on-site tests, but some construction and operation units have personnel who steal and reduce the standards and procedures of withstand voltage tests, and the operators privately change the voltage display values of test equipment, which leads to a reduction in test voltage and may cause the tested power equipment to be put into operation with insulation hidden dangers, thereby endangering power supply safety. SUMMARY

[0003] The application aims to at least solve one of the problems in the prior art or related art.

[0004] The technical scheme of the application provides a portable high-voltage on-site inspection device, which comprises a voltage equalizing ring, a high-voltage arm, a low-voltage arm, a grounding piece, a control assembly and a box body. The voltage equalizing ring is used to be connected with a to-be-tested circuit. The high-voltage arm is detachably connected with one end of the voltage equalizing ring and one end of the low-voltage arm. The grounding piece is arranged at the other end of the low-voltage arm. The control assembly is detachably connected with the low-voltage arm. The control assembly comprises a detection module and a calculation module. The detection module is used to obtain a low voltage of the low-voltage arm. The calculation module is used to determine a high voltage of the to-be-tested circuit according to the low voltage. The high voltage is used to verify a withstand voltage. The box body is used to accommodate the voltage equalizing ring, the high-voltage arm, the low-voltage arm and the control assembly after being separated.

[0005] In some technical schemes provided by the application, the inspection device further comprises a support, the support comprises a rotatingly connected upper seat and lower seat, the upper seat can rotate relative to the lower seat around a vertical axis, and the upper seat is detachably connected with the low-voltage arm.

[0006] In some technical schemes provided by the application, the inspection device further comprises a support, the support comprises a rotatingly connected upper seat and lower seat, the upper seat can rotate relative to the lower seat around a vertical axis, and the upper seat is detachably connected with the low-voltage arm.

[0007] In some technical schemes provided by the application, the inspection device further comprises a horizontal indicating piece, the horizontal indicating piece is arranged on the outer wall of the low-voltage arm, and the horizontal indicating piece is used to indicate whether the low-voltage arm is in a horizontal state.

[0008] In some technical schemes provided by the application, the working frequency of the control assembly is 20 Hz to 300 Hz.

[0009] In some technical solutions provided in this application, the testing device further includes: a leakage current detection element, which is connected in series between the grounding element and the low-voltage arm. The control component further includes: an alarm module, which sends an alarm signal when the leakage current detection element detects leakage current, or when the data of the control component is in an over-limit state. The alarm signal includes an audible signal and a visual signal.

[0010] In some of the technical solutions provided in this application, the control component also includes: a cable and an emergency stop module, the cable being connected to the low-voltage arm, the emergency stop module being connected in series with the cable, and the emergency stop module being used to cut off the measurement circuit of the cable.

[0011] In some of the technical solutions provided in this application, the control component also includes: a display module and a housing. The display module is used to display the data and alarm signals of the control component, and at least part of the display module and the emergency stop module are exposed on the same side wall of the housing.

[0012] In some of the technical solutions provided in this application, the testing device further includes: a power supply component, which is connected to the control component and is used to provide power to the control component. The power supply component includes a battery and a solar charging panel.

[0013] In some of the technical solutions provided in this application, the control component also includes: a wireless transmission module, which communicates with an external terminal via a wireless network.

[0014] Compared with related technologies, the present invention has at least the following beneficial effects: The field testing device of this application is both portable and functional, effectively monitoring the accuracy of high voltage in on-site AC withstand voltage tests. This ensures the accuracy of the withstand voltage test, improves the technical means of monitoring on-site test voltage, reduces safety hazards caused by inadequate implementation of regulations, and enhances power supply safety. Furthermore, compared to traditional indoor fixed-site high-voltage testing equipment, the flexibly detachable field testing device can be used in various on-site testing environments, expanding its applicability. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of some embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A connection diagram of an inspection device according to an embodiment of this application; Figure 2 This is a schematic diagram showing the disassembled packaging of an inspection device according to one embodiment of this application.

[0016] in,Figure 1 and Figure 2 The correspondence between the reference numerals and component names in the attached drawings is as follows: 10. Testing device; 100. Equalizing ring; 210. High-voltage arm; 220. Low-voltage arm; 221. Voltage divider output socket; 300. Grounding component; 400. Control component; 410. Cable; 420. Display module; 430. Housing; 440. Expansion module; 500. Cabinet; 610. Support; 620. Support component; 700. Horizontal indicator; 800. Leakage detection component; 900. Power supply component. Detailed Implementation

[0017] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0018] Embodiments of this application provide a portable high-voltage field testing device 10, such as... Figure 1 and Figure 2 As shown, the field testing device 10 includes: an equalizing ring 100, a high-voltage arm 210, a low-voltage arm 220, a grounding component 300, a control component 400, and a housing 500. The equalizing ring 100 is used to connect to the circuit under test. The two ends of the high-voltage arm 210 are detachably connected to one end of the equalizing ring 100 and one end of the low-voltage arm 220, respectively. The grounding component 300 is located at the other end of the low-voltage arm 220. The control component 400 is detachably connected to the low-voltage arm 220. The control component 400 includes a detection module and a calculation module. The detection module is used to obtain the low voltage of the low-voltage arm 220. The calculation module is used to determine the high voltage of the circuit under test based on the low voltage. The high voltage is used to verify the withstand voltage test voltage. The housing 500 is used to house the separated equalizing ring 100, high-voltage arm 210, low-voltage arm 220, and control component 400.

[0019] In this embodiment, the field testing device 10 can be used for high-voltage power equipment with voltages of 100,000 volts or higher. An equalizing ring 100 is connected to the circuit under test. A high-voltage arm 210 and a low-voltage arm 220 extend vertically and are coaxially arranged. The two ends of the high-voltage arm 210 are connected to the tops of the equalizing ring 100 and the low-voltage arm 220. A grounding component 300, which can be a grounding screw, is provided at the bottom of the low-voltage arm 220. The grounding component 300 is connected to the earth, allowing the circuit under test to form a loop with the earth through the equalizing ring 100, the high-voltage arm 210, and the low-voltage arm 220.

[0020] The high-voltage arm 210 and the low-voltage arm 220 form a series voltage divider circuit. The high voltage of the circuit under test is introduced through the voltage equalization ring 100 and distributed across the high-voltage arm 210 and the low-voltage arm 220 according to their impedance ratios. The detection module of the control component 400 measures the low voltage of the low-voltage arm 220, and the calculation module, based on the voltage divider principle, inversely calculates the voltage U1 of the circuit under test as follows: U1 = U2 × (Z1 + Z2) / Z2; or U1 = U2 × (R1 + R2) / R2; The impedance Z2 and resistance R2 of the low-voltage arm 220, and the impedance Z1 and resistance R1 of the high-voltage arm 210 are fixed preset parameters. The low voltage U2 of the low-voltage arm 220 is measured by the detection module. The control component 400 calculates the voltage through a voltage divider circuit to determine the high voltage of the circuit under test, thereby realizing the on-site verification of the high voltage. The high voltage is used to verify the withstand voltage test voltage, and the withstand voltage test can be a series frequency conversion resonant withstand voltage test.

[0021] The equalizing ring 100, high-pressure arm 210, low-pressure arm 220, and control component 400 are all detachably connected. For example, the high-pressure arm 210 and low-pressure arm 220 are connected by flanges and bolts. The housing 500 has multiple mounting slots. After the field inspection device 10 finishes inspection, the operator can disassemble the equalizing ring 100, high-pressure arm 210, low-pressure arm 220, and control component 400 and place them into the mounting slots for easy storage and transport of the field inspection device 10. For example, the housing 500 is made of aluminum alloy for easy on-site transport.

[0022] The field testing device 10 of this application combines portability and testing functionality, effectively monitoring the accuracy of high voltage in on-site AC withstand voltage tests. This ensures the accuracy of the withstand voltage test, improves the technical means of monitoring on-site test voltage, reduces safety hazards caused by inadequate implementation of procedures, and enhances power supply safety. Furthermore, compared to traditional indoor fixed-site high-voltage testing equipment, the flexibly detachable field testing device 10 can be used in various on-site testing environments, expanding its applicability.

[0023] In some embodiments provided in this application, such as Figure 1 As shown, the testing device 10 also includes a support 610, which includes an upper seat and a lower seat that are rotatably connected. The upper seat is rotatable relative to the lower seat about a vertical axis and is detachably connected to the low-pressure arm 220.

[0024] In this embodiment, a support structure for the field inspection device 10 is provided. The upper seat of the support 610 is detachably connected to the bottom of the low-pressure arm 220, and the lower seat is installed on the field mounting surface, which can be the ground or a workbench. The support 610 provides support for the low-pressure arm 220 and the high-pressure arm 210, providing a stable installation environment for the low-pressure arm 220. The upper and lower seats are movably connected, allowing the upper seat to rotate 360° around the vertical axis in the horizontal direction. This allows the support 610 to adjust the angles of the low-pressure arm 220 and the high-pressure arm 210 to adapt to different field installation environments, thus improving the field adaptability of the inspection device 10.

[0025] For example, the bottom of the support is provided with an anti-slip rubber pad to improve the stability of the support 610 in windy conditions and enhance the support 610's ability to cope with complex on-site environments.

[0026] In one possible embodiment, the support 610 is an integral structure, and the support 610 can be a housing 500 to improve the utilization efficiency of the housing 500 and simplify the structure of the inspection device 10.

[0027] In some embodiments provided in this application, such as Figure 1 As shown, the testing device 10 also includes: a support member 620, which is detachably connected to the bottom of the low-pressure arm 220. Multiple support members 620 are arranged around the low-pressure arm 220 in the circumferential direction. The support member 620 is connected to the support 610. The height of any support member 620 is adjustable.

[0028] In this embodiment, a support structure for the testing device 10 is further provided. The two ends of the support member 620 are detachably connected to the bottom of the low-pressure arm 220 and the support 610, respectively. Specifically, the support member 620 can be located on the top surface of the upper seat, and the housing 500 can accommodate the separated support member 620. The support member 620 can be vertically adjusted to change its connection position with the support 610, thereby adjusting its height. The height adjustment range of the support member 620 is 0cm to 5cm. For example, the support member 620 is bolted to the upper seat. The operator can adjust the bolt connection depth by rotating the bolt, thereby controlling the height of the support member 620. Multiple support members 620 surround the outer periphery of the low-pressure arm 220. By adjusting the height of the support members 620 at different positions, the operator can level the testing device 10 on-site, enabling the testing device 10 to adapt to uneven ground and preventing pressure distribution errors caused by tilting of the testing device 10.

[0029] In some embodiments provided in this application, such as Figure 1 As shown, the inspection device 10 also includes a horizontal indicator 700, which is disposed on the outer wall of the low-pressure arm 220 and is used to indicate whether the low-pressure arm 220 is in a horizontal state.

[0030] In this embodiment, a horizontal indicator 700 is provided on the side wall of the low-pressure arm 220. The horizontal indicator 700 can be a spirit level or a water level bubble. The horizontal indicator 700 is fixed to the outer wall of the low-pressure arm 220 by adhesive bonding screws. The horizontal indicator 700 can indicate whether the low-pressure arm 220 is in a horizontal state, making the judgment of the placement state of the inspection device 10 more accurate. This allows the operator to perform leveling operations based on the indication result of the horizontal indicator 700, ensuring that the inspection device 10 is in a stable state and improving the adaptability of the inspection device 10 to the on-site working environment.

[0031] In some embodiments provided in this application, the operating frequency of the control component 400 is 20Hz to 300Hz.

[0032] In this embodiment, the operating frequency of the field testing device 10 is provided. Compared to the 50Hz power frequency of traditional high-voltage testing devices designed for high-voltage test chambers, the control component 400 can meet the frequency range requirements of 20Hz to 300Hz for series frequency conversion resonant withstand voltage tests, making the field testing device 10 applicable to a wide frequency range and meeting the actual needs of field testing.

[0033] In some embodiments provided in this application, such as Figure 1 As shown, the testing device 10 also includes a leakage current detection element 800, which is connected in series between the grounding element 300 and the low-voltage arm 220. The control component 400 also includes an alarm module, which sends an alarm signal when the leakage current detection element 800 detects a leakage current, or when the data of the control component 400 is in an over-limit state. The alarm signal includes an audible signal and a visual signal.

[0034] In this embodiment, an alarm function is provided for the testing device 10. The leakage current detection element 800 can be a leakage current sensor, connected in series between the grounding element 300 and the low-voltage arm 220, and used to detect the grounding loop current to determine if there is a leakage in the grounding loop. When the device experiences a leakage (grounding current > 10mA), or when the data is in an over-limit state, the alarm module is triggered to remind the operator to investigate promptly. The alarm signal includes both audible and visual signals to enhance the warning effect. The alarm module can be a buzzer and a red LED light.

[0035] For example, an over-limit condition can be a measured high voltage deviation exceeding ±2%, or a grounding resistance greater than 10Ω. The deviation is the difference between the measured high voltage and the actual voltage value of the circuit under test. When the absolute value of this difference exceeds ±2% of the actual voltage, it is considered an over-limit condition. The grounding resistance is the grounding loop resistance of the grounding component 300 itself, specifically referring to the equivalent resistance formed between the grounding component 300 and the earth. When the grounding resistance is too high, the discharge capacity of the grounding loop decreases, making it unable to quickly conduct away possible leakage current or induced charge, easily causing the equipment casing to become electrified, posing a risk of electric shock.

[0036] In some embodiments provided in this application, such as Figure 1 As shown, the control assembly 400 also includes a cable 410 and an emergency stop module. The cable 410 is connected to the low-voltage arm 220, and the emergency stop module is connected in series with the cable 410. The emergency stop module is used to cut off the measurement circuit of the cable 410.

[0037] In this embodiment, the low-voltage arm 220 is equipped with a voltage divider output socket 221, and the cable 410 is connected to the voltage divider output socket 221. The emergency stop module can be an emergency stop button, for example, a red mushroom-shaped button. The emergency stop module is connected to the main control measurement circuit of the control component 400 via the cable 410. When the inspection device 10 is in a risky state, the emergency stop module can cut off the signal circuit of the cable 410 with one button, reducing the risk of electric shock to the operator.

[0038] For example, the control component 400 also includes a storage module, which can be an SD card. The storage module is used to store data such as test voltage values, time, and grounding resistance recorded by the control component 400, and supports continuous storage of more than 1000 sets. The control component 400 also includes an expansion module 440, which enables charging or data export through a connection interface, which can be a USB or Type-C interface.

[0039] In some embodiments provided in this application, such as Figure 1 As shown, the control component 400 also includes a display module 420 and a housing 430. The display module 420 is used to display the data and alarm signals of the control component 400. At least part of the display module 420 and the emergency stop module are exposed on the same side wall of the housing 430.

[0040] In this embodiment, the display module 420 can be a display screen, capable of displaying data and alarm signals. The data includes detection data, waveforms, and calculation results processed by the control component 400, enabling operators to clearly and intuitively grasp data information and alarm intelligence. The detection module, calculation module, alarm module, and wireless transmission module are housed within the housing 430, with at least a portion of the display module 420 and the emergency stop module exposed on the same side wall of the housing 430. This allows operators to immediately trigger the adjacent emergency stop module upon discovering an alarm intelligence displayed on the display module 420, promptly interrupting device operation and improving emergency stop efficiency.

[0041] For example, the control component 400 also includes an alarm reset button to deactivate the alarm state of the control component 400.

[0042] In some embodiments provided in this application, such as Figure 1 As shown, the testing device 10 also includes a power supply unit 900, which is connected to the control component 400. The power supply unit 900 is used to provide power to the control component 400, and includes a battery and a solar charging panel.

[0043] In this embodiment, a power supply method for the field inspection device 10 is provided. The control component 400 obtains power through a battery and a solar charging panel. The battery can be a lithium battery, which provides energy assurance for the field service of the control component 400, enabling the field inspection device 10 to adapt to environments without power. The solar charging panel uses a flexible monocrystalline silicon solar panel, which can supplement the battery for 2 to 3 hours on a sunny day, solving the battery life problem in scenarios without power. This dual power supply provides strong power support for field inspection, making the field inspection device 10 suitable for remote outdoor inspection scenarios.

[0044] In some embodiments provided in this application, the control component 400 further includes a wireless transmission module, which communicates with an external terminal via a wireless network.

[0045] In this embodiment, a wireless connection method for the control component 400 is provided. The wireless transmission module connects to an external terminal via a wireless network, including a mobile phone, computer, or tablet. This allows data from the control component 400 to be synchronized to the external terminal wirelessly, extending the connection distance, improving communication convenience, and avoiding the safety risks caused by plugging and unplugging data cables on-site. For example, the wireless transmission module can be a Bluetooth 4.0 module.

[0046] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or module 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 invention.

[0048] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] The above are merely some embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A portable high-voltage field testing device, characterized in that, include: A voltage equalizing ring is used to connect to the circuit under test. A high-pressure arm and a low-pressure arm, wherein the two ends of the high-pressure arm are detachably connected to one end of the equalizing ring and one end of the low-pressure arm, respectively; A grounding element is located at the other end of the low-voltage arm; A control component is detachably connected to the low-voltage arm. The control component includes a detection module and a calculation module. The detection module is used to acquire the low voltage of the low-voltage arm, and the calculation module is used to determine the high voltage of the circuit under test based on the low voltage. The high voltage is used to verify the withstand voltage test voltage. The housing is used to house the equalizing ring, the high-pressure arm, the low-pressure arm, and the control assembly after separation.

2. The portable high-voltage field testing device according to claim 1, characterized in that, Also includes: The support includes an upper seat and a lower seat that are rotatably connected. The upper seat is rotatable relative to the lower seat about a vertical axis and is detachably connected to the low-pressure arm.

3. The portable high-voltage field testing device according to claim 2, characterized in that, Also includes: A support member is detachably connected to the bottom of the low-pressure arm. Multiple support members are arranged circumferentially around the low-pressure arm. The support member is connected to the support base. The height of any one of the support members is adjustable.

4. The portable high-voltage field testing device according to claim 1, characterized in that, Also includes: A level indicator is provided on the outer wall of the low-pressure arm, and the level indicator is used to indicate whether the low-pressure arm is in a horizontal state.

5. The portable high-voltage field testing device according to claim 1, characterized in that, The operating frequency of the control component is 20Hz to 300Hz.

6. The portable high-voltage field testing device according to any one of claims 1 to 5, characterized in that, Also includes: A leakage current detection device is connected in series between the grounding device and the low-voltage arm; The control component also includes: The alarm module sends an alarm signal when the leakage current detection result is leakage current, or when the data of the control component is in an over-limit state. The alarm signal includes an audible signal and a visual signal.

7. The portable high-voltage field testing device according to claim 6, characterized in that, The control component also includes: Cable, connected to the low-voltage arm; An emergency stop module, connected in series with the cable, is used to disconnect the measurement circuit of the cable.

8. The portable high-voltage field testing device according to claim 7, characterized in that, The control component also includes: The display module is used to display the data of the control component and the alarm signal; The housing, at least a portion of the display module and the emergency stop module are exposed on the same side wall of the housing.

9. The portable high-voltage field testing device according to any one of claims 1 to 5, characterized in that, Also includes: A power supply component, connected to the control component, is used to provide electrical energy to the control component, and the power supply component includes a battery and a solar charging panel.

10. The portable high-voltage field testing device according to any one of claims 1 to 5, characterized in that, The control component also includes: A wireless transmission module, which communicates with an external terminal via a wireless network.

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