Voltage measuring device and voltage measuring equipment

Abstract

The utility model provides a voltage measuring device and voltage measuring equipment, and relates to the field of voltage measurement, and the voltage measuring device comprises a pedestal and an attenuator. The base comprises a first outer wall and a second outer wall, and the plane where the first outer wall is located intersects with the plane where the second outer wall is located. The first outer wall is provided with a first containing position used for containing an attenuator, the second outer wall is provided with a second containing position used for containing the attenuator, and the attenuator is detachably connected with the first containing position or the second containing position. The attenuator is provided with a measuring terminal used for being connected with a to-be-measured piece, and when the attenuator is located at the first containing position and the second containing position, the measuring terminal can be connected into the to-be-measured piece in different connecting directions. The attenuator is mounted on different accommodating positions of the base, and the measuring terminal of the attenuator can adapt to different working scenes, so that the working efficiency and the safety of measurement are improved.

Description

Technical Field

[0001] The present application relates to the technical field of voltage measurement, and in particular to a voltage measurement device and a voltage measurement equipment. Background Art

[0002] Currently, breakdown voltage testers are primarily used in the breakdown strength and withstand voltage testing of solid insulating materials. They are available in two versions: DC high-voltage output and industrial frequency high-voltage output. When testing a breakdown voltage tester, it is often placed in a closed test chamber. Currently, calibration of instruments such as breakdown voltage testers involves first opening the test chamber door, shielding the interlocking mechanism, and then leading the high-voltage line to the outside for testing using a traditional digital voltage measurement device. However, this method makes it difficult to ensure a safe distance between the high-voltage line and the test chamber casing. Furthermore, personnel can easily touch the high-voltage line during operation, posing a certain safety risk. Existing voltage measurement devices are also large, and the measurement process is relatively cumbersome. Utility Model Content

[0003] The purpose of this application is to provide a voltage measuring device and a voltage measuring equipment to address at least one of the above-mentioned existing technical problems. The voltage measuring device can be placed in a test chamber and the position of the attenuator can be adjusted to meet the test chambers of various specifications.

[0004] The present application provides a voltage measuring device, which includes a base and an attenuator;

[0005] The base includes a first outer wall and a second outer wall, wherein the plane where the first outer wall and the second outer wall are located intersect; the first outer wall is provided with a first accommodation position for placing the attenuator, and the second outer wall is provided with a second accommodation position for placing the attenuator, and the attenuator is detachably connected to the first accommodation position or the second accommodation position respectively;

[0006] The attenuator is provided with a measuring terminal for connecting to the device under test. When the attenuator is located at the first accommodating position and the second accommodating position, the measuring terminal can be connected to the device under test in different connection directions.

[0007] In a possible implementation manner, a measurement circuit and a power supply are further included, wherein the measurement circuit and the power supply are accommodated in the inner cavity of the base;

[0008] The voltage measurement device includes a solid insulating layer disposed between the measurement circuit and the power supply.

[0009] In a possible implementation manner, the attenuator is a straight-tube structure or a special-shaped structure.

[0010] In a possible implementation manner, the voltage measuring device further includes a flexible housing, and the flexible housing is sleeved outside the attenuator.

[0011] In a possible implementation manner, the base includes a magnetic component, and the magnetic component is arranged on the bottom surface of the base.

[0012] In a possible implementation manner, the base includes a first base, a second base, and a slide rail, and the first base and the second base are slidably connected via the slide rail;

[0013] After the first base and the second base move away from each other along the slide rail, the bottom surface of the first base and the bottom surface of the second base can abut against the placement surface of the voltage measuring device.

[0014] In a possible implementation manner, the voltage measuring device further includes an insulating ball, which is disposed at an end of the attenuator away from the base, and is provided with a silicone through-hole for placing the measuring terminal.

[0015] In a possible implementation manner, the voltage measuring device further includes a protective cover, and the protective cover is sleeved on the insulating ball.

[0016] In a possible implementation manner, the voltage measuring device is further provided with a rib structure, the rib structure is connected to the second outer wall, and the rib structure is provided on a side of the second outer wall away from the first outer wall.

[0017] In a possible implementation manner, the voltage measuring device as described in any one of the above implementation manners further includes a data receiving device, wherein the data receiving device is communicatively connected to the data output device of the voltage measuring device.

[0018] The voltage measurement device provided in this application has the following beneficial effects:

[0019] The present application provides a voltage measuring device, which includes a base and an attenuator; the base includes a first outer wall and a second outer wall, the first outer wall intersecting with the plane where the second outer wall is located; the first outer wall is provided with a first accommodating position for placing the attenuator, and the second outer wall is provided with a second accommodating position for placing the attenuator, and the attenuator is detachably connected to the first accommodating position or the second accommodating position respectively; the attenuator is provided with a measuring terminal for connecting to a device to be tested, and when the attenuator is located in the first accommodating position and the second accommodating position, the measuring terminal can be connected to the device to be tested in different connection directions. By installing the attenuator in different accommodating positions of the base, the measuring terminal of the attenuator can adapt to different working scenarios, thereby improving the working efficiency and safety of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural diagram of a voltage measuring device in an embodiment of the present utility model;

[0022] Figure 2 It is a structural diagram of a voltage measuring device in an embodiment of the present utility model;

[0023] Figure 3 It is a structural diagram of a voltage measuring device in an embodiment of the present utility model;

[0024] Figure 4 It is a structural diagram of a data receiving device in an embodiment of the present utility model;

[0025] Figure 5 It is a structural diagram of a data receiving device in an embodiment of the present utility model.

[0026] The following is a supplementary description of the accompanying drawings:

[0027] 1. Base; 11. First outer wall; 12. Second outer wall; 2. Attenuator; 4. Protective cover; 6. Data receiving device; 61. Display element. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] The term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present application. In the description of the present application, it should be understood that the terms "upper," "lower," "top," "bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present application.

[0030] The following describes a voltage measuring device provided in an embodiment of the present application with reference to the accompanying drawings. The voltage measuring device is particularly suitable for calibrating a breakdown voltage tester.

[0031] Please refer to Figure 1-Figure 5 The voltage measuring device includes a base 1 and an attenuator 2; the base 1 includes a first outer wall 11 and a second outer wall 12, and the planes where the first outer wall 11 and the second outer wall 12 are located intersect; the first outer wall 11 is provided with a first accommodating position for placing the attenuator 2, and the second outer wall 12 is provided with a second accommodating position for placing the attenuator 2, and the attenuator 2 is detachably connected to the first accommodating position or the second accommodating position respectively; the attenuator 2 is provided with a measuring terminal for connecting to the device under test, and when the attenuator 2 is located in the first accommodating position and the second accommodating position, the measuring terminal can be connected to the device under test in different connection directions. By installing the attenuator 2 in different accommodating positions of the base 1, the measuring terminal of the attenuator 2 can adapt to different working scenarios, thereby improving the working efficiency and safety of the measurement.

[0032] Understandably, the DUT is a breakdown voltage tester, which is primarily used in breakdown strength and withstand voltage tests on solid insulating materials. It comes in two forms: DC high-voltage output and industrial frequency high-voltage output. The existing testing process is conducted in a closed test chamber. Currently, calibration of the DUT involves opening the test chamber door, shielding the interlocking mechanism, and then leading the high-voltage test line to the outside for testing using a traditional digital high-voltage meter. It's difficult to maintain a safe distance between the high-voltage test line and the test chamber casing. Furthermore, personnel can easily touch the high-voltage test line during operation, posing a certain safety risk.

[0033] Specifically, the voltage measuring device of the present application has a measurement range of 0 to 50 kV when measuring DC voltage, with an accuracy of level 0.5; the measurement range when measuring AC voltage is 0 to 50 kV, with an accuracy of level 1, and a voltage divider ratio of 1000:1, which meets the calibration requirements of the breakdown voltage tester being measured.

[0034] Specifically, the voltage measuring device of the present application is placed in a test chamber and does not require a shielding interlocking mechanism; the first outer wall 11 is arranged parallel to the horizontal plane, and the second outer wall 12 is arranged to intersect the horizontal plane; when the base 1 is in the first accommodation position, the sum of the heights of the attenuator 2 and the base 1 is 325 mm; when the base 1 is in the second accommodation position, the sum of the heights of the attenuator 2 and the base 1 is 273 mm. In an embodiment of the present application, the sum of the heights of the attenuator 2 and the base 1 is 270 mm-330 mm. In one possible implementation, the angle between the plane where the first outer wall 11 is located and the plane where the second outer wall 12 is located is 10°-70°; in another possible implementation, the angle between the plane where the first outer wall 11 is located and the plane where the second outer wall 12 is located is 20°-60°.

[0035] Furthermore, the voltage measuring device also includes a measurement circuit and a power supply, which are housed within the inner cavity of base 1. The voltage measuring device also includes a solid insulation layer disposed between the measurement circuit and the power supply. This layer effectively isolates the measurement circuit and the power supply, preventing electrical interference, short circuits, or leakage between them. Furthermore, the placement of the voltage measuring device has minimal impact on measurement results.

[0036] Specifically, the test circuit includes a test terminal (L end) and a ground terminal (G end). The test terminal is arranged at one end of the attenuator 2 away from the base 1, thereby reducing the distance between the test terminal and the high-voltage wire of the breakdown voltage tester to be measured.

[0037] Specifically, the power source is a lithium battery, and the voltage measuring device can be powered independently without the need to connect to a power cord.

[0038] Specifically, insulating oil is often used in existing technologies to isolate different components within a voltage measuring device, but this poses the risk of oil leakage. In contrast, in this embodiment, a composite polytetrafluoroethylene material is used as the solid insulating layer. This solid insulating layer is also positioned between other components within the voltage measuring device to isolate them. This eliminates the need for insulating oil within the voltage measuring device, reducing its size and weight.

[0039] Specifically, the attenuator 2 is a straight cylindrical structure or a special-shaped structure. By providing attenuators 2 of different shapes, the voltage measuring device can be slightly bent and adjusted according to the internal space of the breakdown voltage tester test chamber to fully adapt to the on-site testing environment.

[0040] In this embodiment, the attenuator 2 is a straight corrugated structure. In another possible implementation, the attenuator 2 can be slightly bent and adjusted according to the internal space size of the test chamber of the breakdown voltage tester.

[0041] Furthermore, the voltage measuring device further comprises a flexible housing, which is sleeved on the outside of the attenuator 2. In this way, the flexible housing can adapt to different installation angles and positions, and the voltage measuring device is more flexible when it needs to be moved or adjusted.

[0042] Specifically, when the voltage measuring device is located on the bottom or side of the test chamber, the deformation of the flexible shell can change the shape and placement angle of the attenuator 2, and thus the attenuator 2 can be transformed from a straight cylindrical structure to a special-shaped structure.

[0043] Specifically, the base 1 includes a magnetic member, which is provided on the bottom surface of the base 1. By providing the magnetic member on the bottom surface of the base 1, the voltage measuring device can be adsorbed inside the test chamber, thereby improving the flexibility and stability of the voltage measuring device.

[0044] Specifically, the voltage measuring device further includes a counterweight block, which is integrated with the magnetic element, and the weight of the counterweight block is 1kg-5kg.

[0045] Specifically, the base 1 includes a first base, a second base, and a slide rail. The first and second bases are slidably connected by the slide rail. After the first and second bases move away from each other along the slide rail, the bottom surfaces of the first and second bases can abut against the placement surface of the voltage measuring device. The slidable connection between the first and second bases allows the base 1 to adjust its length and support area, effectively improving the stability of the voltage measuring device during measurement.

[0046] Specifically, in one possible embodiment, the first base includes a first outer wall 11, the second base includes a second outer wall 12, and a slide rail is disposed between the first and second bases. Moving the first or second base drives the second or first base, thereby adjusting the length of the base 1 along the sliding direction of the first and second bases. In another possible embodiment, the separation line between the first and second bases is close to or away from the edge where the first and second outer walls 11 and 12 meet.

[0047] Specifically, the lengths of the first and second bases are 230 mm to 280 mm. As the first and second bases move away from each other along the slide rail, the support area between the bottom surfaces of the first and second bases and the surface on which the voltage measuring device is placed increases. As the first and second bases move toward each other along the slide rail, the support area between the bottom surfaces of the first and second bases and the surface on which the voltage measuring device is placed decreases.

[0048] Furthermore, the voltage measurement device includes an insulating ball, located at the end of attenuator 2 away from base 1. The insulating ball has silicone holes for receiving the measuring terminals. This effectively isolates the measuring terminals from surrounding metal objects, preventing arcing due to short-distance discharges or poor contact, and ensuring stable operation of the voltage measurement device.

[0049] Specifically, the insulating ball is detachably connected to the attenuator 2 , and a silicone through-hole of 2 mm to 6 mm is opened radially on the insulating ball. The high-voltage wire extends into the silicone through-hole and is connected to the measuring terminal.

[0050] Furthermore, the voltage measurement device includes a protective cover 4, which is mounted on the insulating ball. This further isolates external metal objects from contact with the insulating ball and the measurement terminals, reducing arcing caused by static electricity accumulation or short-distance discharge, avoiding the risk of high-voltage breakdown, and ensuring measurement safety.

[0051] Specifically, the inner diameter of the protective cover 4 is greater than or equal to the outer diameter of the insulating ball. The protective cover 4 is detachably connected to the attenuator 2 . The protective cover 4 is also provided with a through hole for placing the measuring terminal.

[0052] Furthermore, the voltage measuring device is further provided with a retaining edge structure, which is connected to the second outer wall 12 and is disposed on a side of the second outer wall 12 away from the first outer wall 11. Thus, the retaining edge structure can provide additional support for the voltage measuring device, preventing the voltage measuring device from becoming unstable due to tilting or movement when placed.

[0053] Specifically, in the voltage measuring device, the rib structure is fixedly connected to the base 1 , and the height of the rib mechanism is higher than the height of the edge where the second outer wall 12 meets the rib mechanism.

[0054] The present application also provides a voltage measurement device, comprising a voltage measurement device as described in any of the above embodiments, and further comprising a data receiving device 6, wherein the data receiving device 6 is communicatively connected to a data output device of the voltage measurement device. Thus, the voltage measurement device and the data receiving device 6 are effectively isolated, and an operator can read the voltage value through the data receiving device 6 outside the test chamber, thereby improving the safety of the measurement process.

[0055] Specifically, data receiving device 6 is located outside the test chamber and includes a display 61 and a receiving antenna. In one possible embodiment, the voltage value of the voltage measuring device equals the reading of display 61 * the voltage divider ratio. In another possible embodiment, the voltage divider is built into data receiving device 6, and the voltage value of the voltage measuring device equals the reading of display 61.

[0056] Specifically, the voltage measuring device includes a Bluetooth output antenna, and the data receiving device 6 includes a Bluetooth receiving antenna. In this embodiment, the distance between the voltage measuring device and the data receiving device 6 is 0.2m-30m, that is, during the measurement process, the door of the test chamber is closed.

[0057] The following describes the working process of the voltage measurement device in the embodiment of the present application in combination with specific application scenarios, as follows:

[0058] First, open the door of the test chamber of the breakdown voltage tester to be measured, slide the slide rail to adjust the length of the base 1, and adsorb the base 1 into the test chamber of the breakdown voltage tester to be tested;

[0059] Then, use a high-voltage wire to connect the measuring terminal to the rubber jack of the insulating ball and the high-voltage output terminal of the high-voltage generator of the breakdown voltage tester to be calibrated, and the ground terminal on the base 1 is connected to the ground terminal of the breakdown voltage tester through the ground wire;

[0060] Afterwards, turn on the Bluetooth transmitter module of the voltage measuring device and close the door of the test chamber of the breakdown voltage tester;

[0061] Finally, start the breakdown voltage tester to be measured, read the secondary voltage value of the data receiving device 6 and multiply it by the voltage divider ratio 1000 of the voltage divider, compare the actual value of the output voltage obtained with the output voltage display value of the breakdown voltage tester to be measured, and complete the calibration of the breakdown voltage tester.

[0062] The following describes specific embodiments of the present application based on the above technical solutions.

[0063] Example 1

[0064] See also Figure 1-Figure 5 Embodiment 1 provides a voltage measuring device including a base 1 and an attenuator 2; the base 1 includes a first outer wall 11 and a second outer wall 12, and the plane where the first outer wall 11 and the second outer wall 12 are located intersects; the first outer wall 11 is provided with a first accommodating position for placing the attenuator 2, and the second outer wall 12 is provided with a second accommodating position for placing the attenuator 2, and the attenuator 2 is detachably connected to the first accommodating position or the second accommodating position respectively; the attenuator 2 is provided with a measuring terminal for connecting to a device under test, and when the attenuator 2 is located in the first accommodating position and the second accommodating position, the measuring terminal can be connected to the device under test in different connection directions.

[0065] The attenuator 2 is a straight cylindrical structure. The base 1 includes a magnetic element disposed on the bottom surface of the base 1. The voltage measuring device also includes a counterweight block, which is integrated with the magnetic element and weighs 1kg-5kg.

[0066] The voltage measuring device is placed within the test chamber, eliminating the need for a shielding interlocking mechanism. The first outer wall 11 is parallel to a horizontal plane, while the second outer wall 12 intersects the horizontal plane. When the base 1 is in its first position, the combined height of the attenuator 2 and base 1 is 325 mm. When the base 1 is in its second position, the combined height of the attenuator 2 and base 1 is 273 mm. The voltage measuring device also includes a sidewall structure connected to the second outer wall 12 and disposed on a side of the second outer wall 12 facing away from the first outer wall 11.

[0067] The voltage measurement device also includes a measurement circuit and a power supply housed within the inner cavity of base 1. The device also includes a solid insulation layer positioned between the measurement circuit and the power supply. The test circuit includes a test terminal (terminal L) and a ground terminal (terminal G). The test terminal is positioned at the end of attenuator 2 facing away from base 1, minimizing the distance between the test terminal and the high-voltage conductors of the breakdown voltage tester to be measured. The solid insulation layer is constructed of composite polytetrafluoroethylene.

[0068] The voltage measuring device also includes an insulating ball, mounted on the end of attenuator 2 away from base 1. The ball is provided with silicone holes for receiving measuring terminals. The insulating ball is detachably connected to attenuator 2 and has 4 mm radial silicone holes through which high-voltage conductors extend to connect to the measuring terminals. The voltage measuring device also includes a protective cover 4, which fits over the insulating ball.

[0069] Example 2

[0070] The difference between Example 2 and Example 1 is that the base 1 includes a first base, a second base, and a slide rail, and the first base and the second base are slidably connected by the slide rail; after the first base and the second base move away from each other along the slide rail, the bottom surface of the first base and the bottom surface of the second base can abut against the placement surface of the voltage measuring device. The length of the first base and the second base is 230mm-280mm. During the process of the first base and the second base moving away from each other along the slide rail, the support area between the bottom surface of the first base and the bottom surface of the second base and the placement surface of the voltage measuring device increases; during the process of the first base and the second base moving closer to each other along the slide rail, the support area between the bottom surface of the first base and the bottom surface of the second base and the placement surface of the voltage measuring device decreases.

[0071] Example 3

[0072] The difference between Example 3 and Example 1 is that a voltage measuring device is provided, comprising a voltage measuring device as in the above-described embodiment, and further comprising a data receiving device 6, which is communicatively connected to a data output device of the voltage measuring device. The data receiving device 6 is disposed outside the test chamber and includes a display 61 and a receiving antenna. The voltage value of the voltage measuring device = the reading of the display 61 * the voltage divider ratio. The voltage measuring device includes a Bluetooth output antenna, and the data receiving device 6 includes a Bluetooth receiving antenna. In this embodiment, the distance between the voltage measuring device and the data receiving device 6 is 0.2 m to 30 m, meaning that during the measurement process, the door of the test chamber is closed.

[0073] The above disclosures are merely several preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A voltage measuring device, characterized in that: The voltage measuring device comprises a base (1) and an attenuator (2); The base (1) comprises a first outer wall (11) and a second outer wall (12), wherein the planes of the first outer wall (11) and the second outer wall (12) intersect; the first outer wall (11) is provided with a first accommodation position for placing the attenuator (2), and the second outer wall (12) is provided with a second accommodation position for placing the attenuator (2), and the attenuator (2) is detachably connected to the first accommodation position or the second accommodation position respectively; The attenuator (2) is provided with a measuring terminal for connecting to the device under test; when the attenuator (2) is located at the first accommodating position and the second accommodating position, the measuring terminal can be connected to the device under test in different connection directions.

2. The voltage measuring device according to claim 1, characterized in that It also includes a measuring circuit and a power supply, wherein the measuring circuit and the power supply are accommodated in the inner cavity of the base (1); The voltage measurement device includes a solid insulating layer disposed between the measurement circuit and the power supply.

3. The voltage measuring device according to claim 1 or 2, characterized in that: The attenuator (2) is a straight-tube structure or a special-shaped structure.

4. The voltage measuring device according to claim 3, characterized in that: The voltage measuring device further comprises a flexible shell, which is sleeved on the outside of the attenuator (2).

5. The voltage measuring device according to claim 1 or 2, characterized in that: The base (1) comprises a magnetic attraction component, and the magnetic attraction component is arranged on the bottom surface of the base (1).

6. The voltage measuring device according to claim 1 or 2, characterized in that: The base (1) comprises a first base, a second base and a slide rail, wherein the first base and the second base are slidably connected via the slide rail; After the first base and the second base move away from each other along the slide rail, the bottom surface of the first base and the bottom surface of the second base can abut against the placement surface of the voltage measuring device.

7. The voltage measuring device according to claim 1 or 2, characterized in that: The voltage measuring device further comprises an insulating ball, which is arranged at one end of the attenuator (2) away from the base (1), and is provided with a silicone through-hole for placing the measuring terminal.

8. The voltage measuring device according to claim 7, characterized in that: The voltage measuring device further comprises a protective cover (4), and the protective cover (4) is sleeved on the insulating ball.

9. The voltage measuring device according to claim 1 or 2, characterized in that: The voltage measuring device is further provided with a retaining edge structure, the retaining edge structure is connected to the second outer wall (12), and the retaining edge structure is arranged on a side of the second outer wall (12) away from the first outer wall (11).

10. A voltage measuring device, characterized in that: The voltage measuring device comprises the voltage measuring device according to any one of claims 1 to 9, and further comprises a data receiving device (6), wherein the data receiving device (6) is communicatively connected to the data output device of the voltage measuring device.

Images