A high and low voltage power distribution cabinet electrical measurement device

Abstract

The present invention relates to the technical field of electrical performance testing devices. The present invention discloses an electrical property measuring device for high and low voltage power distribution cabinets, which includes a measuring frame, an industrial control computer, and a leakage measurement component. The industrial control computer is fixedly arranged on the measuring frame. A power distribution cabinet main body is arranged on the measuring frame. The leakage measurement component is arranged on the measuring frame. The leakage measurement component includes a flexible steel strip, a power supply measurement unit, and a multi-point verification unit. The flexible steel strip is partially attached to the power distribution cabinet main body. The present invention specifically provides an electrical property measuring device for high and low voltage power distribution cabinets that has a flexible steel strip and an insulating extension strip and can form a surface contact with the power distribution cabinet for electricity measurement.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical performance testing devices, and specifically refers to an electrical measurement device for high and low voltage power distribution cabinets. Background Art

[0002] A patent for invention with the application number 202310245418.8 discloses a safety performance detection device for power distribution cabinets, and specifically discloses a technical solution that "through the settings of a paint scraping port, a detection wheel assembly, and a power supply circuit assembly, it is possible to continuously contact different planar positions on the surface of the power distribution cabinet through multiple exposed contacts, and at the same time display the results of the insulation performance detection on an ammeter outside the cabinet body".

[0003] Although the technical solution of this application can detect the insulation performance of different positions of the power distribution cabinet, multiple contacts in the detection wheel assembly form point contacts with intervals between the power distribution cabinet, and there is a phenomenon of detection omission between multiple contact points. At the same time, when the technical solution of this application measures that the power distribution cabinet is leaking electricity, it does not have the function of real-time marking the position of the leakage point, which is not convenient for the staff to repair the insulation coating. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an electrical measurement device for high and low voltage power distribution cabinets. In order to solve the problem that there are easily missing points in the insulation detection of power distribution cabinets in the prior art, the present invention proposes a kind of electrical measurement device for high and low voltage power distribution cabinets with a flexible steel belt and an insulating extension belt and capable of forming a surface contact for electricity measurement with the power distribution cabinet.

[0005] The technical solution adopted by the present invention is as follows: An electrical measurement device for high and low voltage power distribution cabinets, including a measurement frame, an industrial control computer, and a leakage measurement component. The industrial control computer is fixedly arranged on the measurement frame. A main body of the power distribution cabinet is arranged on the measurement frame. The leakage measurement component is arranged on the measurement frame. The leakage measurement component includes a flexible steel belt, a power supply measurement unit, and a multi-point verification unit. The flexible steel belt is partially attached to the main body of the power distribution cabinet.

[0006] Furthermore, the leakage measurement component further includes a main electric push rod, a single-side restraint frame, a torsion restraint sleeve, a sliding rod, and a winding shaft. The main electric push rod is located directly above the measurement frame. The single-side restraint frame is detachably arranged on the output end of the main electric push rod. The torsion restraint sleeve is rotatably arranged in the single-side restraint frame. There is a torque between the torsion restraint sleeve and the single-side restraint frame. One end of the sliding rod is snap-fitted in the torsion restraint sleeve. The winding shaft is slidably arranged on the sliding rod. One end of the flexible steel belt is wound on the winding shaft.

[0007] Further, the leakage current measurement component further includes an insulating extension band and a bar magnet. The insulating extension band is fixedly arranged at one end of the flexible steel band away from the winding shaft. The insulating extension band is adhesively connected to the main body of the power distribution cabinet. The insulating extension band and the flexible steel band are respectively attached to two adjacent planes on the inner surface of the main body of the power distribution cabinet. The bar magnet is fixedly arranged on the insulating extension band, and there is a magnetic attraction force between the bar magnet and the main body of the power distribution cabinet.

[0008] Further, a paint scraping opening is formed on the outer surface of the main body of the power distribution cabinet. The power supply measurement unit is located on the measurement rack. The power supply measurement unit includes a terminal, an internal and external connecting wire, a battery, and an ammeter. The terminal is fixedly arranged on the flexible steel band. The connector of the ammeter is in contact with the paint scraping opening. The ammeter is connected to the battery by a wire. The internal and external connecting wire is fixedly arranged between the terminal and the battery.

[0009] Further, the multi-point verification unit is located on the measurement rack. The multi-point verification unit includes a scraper, a compression spring, a vertically extending bracket, a covering electric push rod, and an electric tape machine. A scraping groove is formed on the single-side restraint frame. The scraper slides through the scraping groove. The scraper is attached to the flexible steel band. The compression spring is fixedly arranged between the scraper and the single-side restraint frame. The vertically extending bracket is fixedly arranged on the output end of the main electric push rod. The covering electric push rod is fixedly arranged at the bottom end of the vertically extending bracket. The electric tape machine is fixedly arranged at the bottom end of the covering electric push rod.

[0010] Further, a telescopic support platform is fixedly arranged on the measurement rack. A connecting sleeve is slidably arranged at the top end of the telescopic support platform. The connecting sleeve is detachably arranged on the main electric push rod.

[0011] Further, the main electric push rod is signal-connected to the industrial control computer, the ammeter is signal-connected to the industrial control computer, the covering electric push rod is signal-connected to the industrial control computer, and the electric tape machine is signal-connected to the industrial control computer.

[0012] Further, when the reading of the ammeter is not zero, the main electric push rod extends; when the reading of the ammeter returns to zero, the covering electric push rod extends and the electric tape machine operates.

[0013] The beneficial effects achieved by the present invention with the above structure are as follows:

[0014] 1. Aiming at the problem in the prior art that "multiple contacts form point contacts with intervals between the power distribution cabinet, and there is a phenomenon of detection omission between multiple contact points", this application proposes a leakage current measurement component that establishes a strip-shaped contact area through a flexible steel band, solves the omission problem existing in point contact measurement, and has a faster measurement speed compared with point contact measurement.

[0015] 2. The present invention designs a multi-point verification unit including an electric push rod and an electric belt conveyor. On the basis of establishing a strip contact area to detect leakage points quickly and over a large area, it also has the function of re-inspecting the leakage area to avoid the problem that there are multiple leakage points in the leakage area but only one leakage point closest to the insulating extension belt is found.

[0016] 3. During the process of tightening the flexible steel belt onto the winding shaft, a scraper provided with a pressing force by a compression spring scrapes and cleans the flexible steel belt to prevent the bottom surface of the flexible steel belt from adhering to the insulating coating, which affects the reliability of subsequent insulation measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional schematic diagram of an electrical measurement device for high and low voltage switch cabinets according to the present invention.

[0018] Figure 2 A sectional schematic diagram of an electrical measurement device for high and low voltage switch cabinets according to the present invention.

[0019] Figure 3 A three-dimensional schematic diagram of a leakage measurement component according to the present invention.

[0020] Figure 4 A three-dimensional schematic diagram of a winding shaft, a flexible steel belt, an insulating extension belt, and a bar magnet according to the present invention.

[0021] Figure 5 A three-dimensional schematic diagram of a torsion restraint sleeve, a sliding rod, and a winding shaft according to the present invention.

[0022] Figure 6 A sectional schematic diagram of a torsion restraint sleeve, a sliding rod, and a winding shaft according to the present invention.

[0023] Figure 7 A three-dimensional schematic diagram of a power supply measurement unit according to the present invention.

[0024] Figure 8 A three-dimensional schematic diagram of a unilateral restraint frame and a multi-point verification unit according to the present invention.

[0025] Figure 9 Another perspective three-dimensional schematic diagram of a unilateral restraint frame and a multi-point verification unit according to the present invention.

[0026] Among them, 1. Measuring frame, 2. Main body of power distribution cabinet, 201. Paint scraping port, 3. Telescopic support platform, 4. Connecting sleeve, 5. Leakage measurement component, 501. Main electric push rod, 502. Unilateral restraint frame, 503. Torsion restraint sleeve, 504. Slide bar, 505. Winding shaft, 506. Flexible steel belt, 507. Insulating extension belt, 508. Bar magnet, 6. Power supply measurement unit, 601. Terminal post, 602. Internal and external connecting wires, 603. Battery, 604. Ammeter, 7. Multi-point verification unit, 701. Scraping groove, 702. Scraper, 703. Pressing spring, 704. Vertically extending support, 705. Covering electric push rod, 706. Electric tape machine, 8. Industrial control computer.

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. Detailed implementation manners

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0030] As Figures 1 to 9 shown, a high and low voltage power distribution cabinet electrical measurement device includes a measuring frame 1, an industrial control computer 8 and a leakage measurement component 5. The industrial control computer 8 is fixedly arranged on the measuring frame 1. A main body 2 of the power distribution cabinet is arranged on the measuring frame 1. The leakage measurement component 5 is arranged on the measuring frame 1. The leakage measurement component 5 includes a flexible steel belt 506, a power supply measurement unit 6 and a multi-point verification unit 7. A part of the flexible steel belt 506 is attached to the main body 2 of the power distribution cabinet.

[0031] As Figures 1 to 9As shown in the figure, the leakage measurement component 5 further includes a main electric push rod 501, a unilateral restraint frame 502, a torsional restraint sleeve 503, a sliding rod 504, and a winding shaft 505. The main electric push rod 501 is located directly above the measurement frame 1. The unilateral restraint frame 502 is detachably provided at the output end of the main electric push rod 501. The torsional restraint sleeve 503 is rotatably provided inside the unilateral restraint frame 502. There is a torque between the torsional restraint sleeve 503 and the unilateral restraint frame 502. One end of the sliding rod 504 is snap-fitted inside the torsional restraint sleeve 503. The winding shaft 505 is slidably provided on the sliding rod 504. One end of the flexible steel belt 506 is wound around the winding shaft 505.

[0032] As Figures 1 to 9 shown in the figure, a paint scraping port 201 is opened on the outer surface of the main body 2 of the power distribution cabinet. The power supply measurement unit 6 is located on the measurement frame 1. The power supply measurement unit 6 includes a terminal 601, an internal and external connecting wire 602, a battery 603, and an ammeter 604. The terminal 601 is fixedly provided on the flexible steel belt 506. The connector of the ammeter 604 is in contact with the paint scraping port 201. The ammeter 604 is electrically connected to the battery 603 by a wire. The internal and external connecting wire 602 is fixedly provided between the terminal 601 and the battery 603.

[0033] As Figures 1 to 9 shown in the figure, the multi-point verification unit 7 is located on the measurement frame 1. The multi-point verification unit 7 includes a scraper 702, a compression spring 703, a vertically extending bracket 704, a covering electric push rod 705, and an electric tape machine 706. A scraping groove 701 is opened on the unilateral restraint frame 502. The scraper 702 slidably penetrates through the scraping groove 701. The scraper 702 is attached to the flexible steel belt 506. The compression spring 703 is fixedly provided between the scraper 702 and the unilateral restraint frame 502. The vertically extending bracket 704 is fixedly provided at the output end of the main electric push rod 501. The covering electric push rod 705 is fixedly provided at the bottom end of the vertically extending bracket 704. The electric tape machine 706 is fixedly provided at the bottom end of the covering electric push rod 705.

[0034] As Figures 1 to 9 shown in the figure, the leakage measurement component 5 further includes an insulating extension belt 507 and a bar magnet 508. The insulating extension belt 507 is fixedly provided at one end of the flexible steel belt 506 away from the winding shaft 505. The insulating extension belt 507 is attached to and connected with the main body 2 of the power distribution cabinet. The insulating extension belt 507 and the flexible steel belt 506 are respectively attached to adjacent two planes on the inner surface of the main body 2 of the power distribution cabinet. The bar magnet 508 is fixedly provided on the insulating extension belt 507. There is a magnetic attraction between the bar magnet 508 and the main body 2 of the power distribution cabinet.

[0035] As Figures 1 to 9 shown in the figure, the main electric push rod 501 is signal-connected to the industrial control computer 8. The ammeter 604 is signal-connected to the industrial control computer 8. The covering electric push rod 705 is signal-connected to the industrial control computer 8. The electric tape machine 706 is signal-connected to the industrial control computer 8.

[0036] As Figures 1 to 9 shown, when the reading of the ammeter 604 is not zero, the main electric push rod 501 extends; when the reading of the ammeter 604 returns to zero, the covering electric push rod 705 extends and the electric belt conveyor 706 operates.

[0037] As Figures 1 to 9 shown, a telescopic support platform 3 is fixedly arranged on the measuring rack 1, a connecting sleeve 4 is slidably arranged at the top of the telescopic support platform 3, and the connecting sleeve 4 is detachably arranged on the main electric push rod 501.

[0038] During specific use, the height of the telescopic support platform 3 and the position of the connecting sleeve 4 are adjusted, so as to adjust the height of the main electric push rod 501 and its lateral position relative to the main body 2 of the power distribution cabinet. The staff holds the insulating extension belt 507 and pastes it on the inner wall of the main body 2 of the power distribution cabinet, and the insulating extension belt 507 is kept stationary with the main body 2 of the power distribution cabinet through the magnetic attraction between the bar magnet 508 and the main body 2 of the power distribution cabinet.

[0039] During the process of pasting the insulating extension belt 507, the flexible steel belt 506 wound around the winding shaft 505 is gradually released and adheres to the inner surface of the main body 2 of the power distribution cabinet, forming a closely contacted strip-shaped area. If there is a phenomenon that the surface insulating coating of the main body 2 of the power distribution cabinet is not fully covered in this strip-shaped area, a closed current loop is formed among the battery 603, the ammeter 604, the paint scraping opening 201, the main body 2 of the power distribution cabinet, the leakage point on the strip-shaped area, the flexible steel belt 506, the terminal post 601 and the internal and external connecting wires 602. The ammeter 604 measures a non-zero current reading and indicates a signal of "there is a leakage phenomenon in the currently measured strip-shaped area on the inner surface of the main body 2 of the power distribution cabinet" to the industrial control computer 8.

[0040] After the industrial control computer 8 receives the signal of "inner surface leakage of the main body 2 of the power distribution cabinet", the main electric push rod 501 starts to extend, so that the unilateral restraint frame 502 gradually approaches the direction of the main body 2 of the power distribution cabinet, and thus the distance between one end of the flexible steel belt 506 connected to the insulating extension belt 507 and one end of the flexible steel belt 506 connected to the winding shaft 505 is reduced. As the unilateral restraint frame 502 approaches the main body 2 of the power distribution cabinet, under the torque action between the torsion restraint sleeve 503 and the unilateral restraint frame 502, the torsion restraint sleeve 503, the sliding rod 504 and the winding shaft 505 rotate, and the flexible steel belt 506 is gradually tightened onto the winding shaft 505, so as to avoid the phenomenon that the part of the flexible steel belt 506 closely attached to the main body 2 of the power distribution cabinet becomes loose and has poor contact (during the process of the flexible steel belt 506 being tightened onto the winding shaft 505, the scraper 702 provided with a pressing force by the pressing spring 703 scrapes and cleans the flexible steel belt 506 to prevent the bottom surface of the flexible steel belt 506 from sticking with the insulating coating and affecting the reliability of subsequent insulation measurement).

[0041] One end of the flexible steel strip 506 close to the single-side restraint frame 502 is gradually tightened onto the winding shaft 505, so that the area of the "strip-shaped area where the flexible steel strip 506 contacts the main body 2 of the power distribution cabinet" gradually decreases. When the reading of the ammeter 604 returns to zero, the industrial control computer 8 determines that the position of the separation point closest to the main body 2 of the power distribution cabinet on the flexible steel strip 506 is a leakage point on the inner surface of the main body 2 of the power distribution cabinet. At this time, with the main electric push rod 501 continuing to extend, the industrial control computer 8 controls the covering electric push rod 705 and the electric tape machine 706 to operate. The covering electric push rod 705 extends to drive the electric tape machine 706 to move downward, and the electric tape machine 706 releases the insulating tape and pastes it on the leakage point just detected on the main body 2 of the power distribution cabinet and cuts off the insulating tape to form a mark.

[0042] The reading of the ammeter 604 returning to zero indicates that there is no leakage in the "current strip-shaped area where the flexible steel strip 506 contacts the main body 2 of the power distribution cabinet", but it does not mean that there is only the current one leakage point in the "strip-shaped area that has been separated from the flexible steel strip 506". That is, after the electric tape machine 706 pastes the insulating tape at the currently detected leakage point, a re-inspection is required to avoid "multiple leakage points in the strip-shaped area that has been separated from the flexible steel strip 506".

[0043] The main electric push rod 501 retracts to the initial state, thereby overcoming the torsional force provided by the torsional restraint sleeve 503, and releasing again the part of the flexible steel strip 506 wound on the winding shaft 505, so that the flexible steel strip 506 clings to the main body 2 of the power distribution cabinet (there is an insulating tape between the detected leakage point and the flexible steel strip 506). If the reading of the ammeter 604 is zero at this time, it means that all leakage points have been found in the entire strip-shaped area, and the staff can adjust the positions of the telescopic support platform 3 and the connecting sleeve 4 to measure the remaining areas of the main body 2 of the power distribution cabinet; if the reading of the ammeter 604 is not zero at this time, it means that there are still leakage points in the entire strip-shaped area.

[0044] In the state where there are still leakage points, the industrial control computer 8 controls the main electric push rod 501 to extend again, so that the area of the strip-shaped area where the flexible steel strip 506 contacts the main body 2 of the power distribution cabinet decreases again. When the reading of the ammeter 604 is zero, it can be confirmed that the position of the separation point closest to the main body 2 of the power distribution cabinet on the flexible steel strip 506 is a leakage point on the inner surface of the main body 2 of the power distribution cabinet. Through repeated measurements, all leakage points in the entire strip-shaped area can be confirmed and marked by pasting insulating tapes with the electric tape machine 706, which is convenient for subsequent repair of the insulating coating.

[0045] The function of the detachable connection relationship between the single-sided restraint frame 502 and the main electric push rod 501 and the engagement connection relationship between the torsion restraint sleeve 503 and the sliding rod 504 is as follows: When the leakage measurement assembly 5 is in use, the flexible steel belt 506 closely adheres to an inner surface of the power distribution cabinet main body 2, and the single-sided restraint frame 502 located in the side direction of the flexible steel belt 506 interferes with at most one inner surface of the power distribution cabinet main body 2. Through the detachable connection relationship between the single-sided restraint frame 502 and the main electric push rod 501 and the engagement connection relationship between the torsion restraint sleeve 503 and the sliding rod 504, when the flexible steel belt 506 needs to be tightly attached to the edge of the inner surface of the power distribution cabinet main body 2, the staff can detach the single-sided restraint frame 502 from the main electric push rod 501 and remove the torsion restraint sleeve 503 from the end of the sliding rod 504, so as to form a short-term unconnected state between the main electric push rod 501 and the winding shaft 505. Subsequently, the staff rotates the single-sided restraint frame 502 by 180° relative to the axis direction of the main electric push rod 501 and reinstalls it on the main electric push rod 501; slides the sliding rod 504 along the inside of the winding shaft 505 so that the other end of the sliding rod 504 is engaged and connected with the torsion restraint sleeve 503. At this point, the staff completes the position swapping of the single-sided restraint frame 502 and the torsion restraint sleeve 503, thereby avoiding interference when the flexible steel belt 506 is tightly attached to the edge position of the inner surface of the power distribution cabinet main body 2.

[0046] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A high and low voltage power distribution cabinet electrical measurement device, characterized in that: It includes a measurement rack (1), an industrial control computer (8) and a leakage measurement component (5). The industrial control computer (8) is fixedly arranged on the measurement rack (1). A power distribution cabinet main body (2) is arranged on the measurement rack (1). The leakage measurement component (5) is arranged on the measurement rack (1). The leakage measurement component (5) includes a flexible steel belt (506), a power supply measurement unit (6) and a multi-point verification unit (7). Part of the flexible steel belt (506) is attached to the power distribution cabinet main body (2). The leakage measurement component (5) further includes a main electric push rod (501), a unilateral restraint frame (502), a torsion restraint sleeve (503), a sliding rod (504) and a winding shaft (505). The main electric push rod (501) is located directly above the measurement rack (1). The unilateral restraint frame (502) is detachably arranged on the output end of the main electric push rod (501). The torsion restraint sleeve (503) is rotatably arranged in the unilateral restraint frame (502). There is a torque between the torsion restraint sleeve (503) and the unilateral restraint frame (502). One end of the sliding rod (504) is clamped in the torsion restraint sleeve (503). The winding shaft (505) is slidably arranged on the sliding rod (504). One end of the flexible steel belt (506) is wound on the winding shaft (505). A paint scraping opening (201) is formed on the outer surface of the power distribution cabinet main body (2). The power supply measurement unit (6) is located on the measurement rack (1). The power supply measurement unit (6) includes a terminal post (601), an internal and external connecting wire (602), a battery (603) and an ammeter (604). The terminal post (601) is fixedly arranged on the flexible steel belt (506). The connector of the ammeter (604) is in contact with the paint scraping opening (201). The ammeter (604) is electrically connected to the battery (603). The internal and external connecting wire (602) is fixedly arranged between the terminal post (601) and the battery (603). The multi-point verification unit (7) is located on the measurement rack (1). The multi-point verification unit (7) includes a scraper (702), a compression spring (703), a vertically extending bracket (704), a covering electric push rod (705) and an electric tape machine (706). A scraping groove (701) is formed on the unilateral restraint frame (502). The scraper (702) is slidably penetrated in the scraping groove (701). The scraper (702) is attached to the flexible steel belt (506). The compression spring (703) is fixedly arranged between the scraper (702) and the unilateral restraint frame (502). The vertically extending bracket (704) is fixedly arranged on the output end of the main electric push rod (501). The covering electric push rod (705) is fixedly arranged at the bottom end of the vertically extending bracket (704). The electric tape machine (706) is fixedly arranged at the bottom end of the covering electric push rod (705). The leakage measurement assembly (5) further includes an insulating extension belt (507) and a bar magnet (508). The insulating extension belt (507) is fixedly arranged at one end of the flexible steel belt (506) away from the winding shaft (505). The insulating extension belt (507) is adhesively connected to the main body of the power distribution cabinet (2). The insulating extension belt (507) and the flexible steel belt (506) are respectively adhered to two adjacent planes on the inner surface of the main body of the power distribution cabinet (2). The bar magnet (508) is fixedly arranged on the insulating extension belt (507), and there is a magnetic attraction force between the bar magnet (508) and the main body of the power distribution cabinet (2). The main electric push rod (501) is signal-connected to the industrial control computer (8), the ammeter (604) is signal-connected to the industrial control computer (8), the covering electric push rod (705) is signal-connected to the industrial control computer (8), and the electric belt conveyor (706) is signal-connected to the industrial control computer (8). When the reading of the ammeter (604) is not zero, the main electric push rod (501) extends; when the reading of the ammeter (604) returns to zero, the covering electric push rod (705) extends and the electric belt conveyor (706) operates.

2. The electrical measurement device for high and low voltage switchgear according to claim 1, characterized in that: A telescopic support platform (3) is fixedly arranged on the measurement rack (1), a connecting sleeve (4) is slidably arranged at the top of the telescopic support platform (3), and the connecting sleeve (4) is detachably arranged on the main electric push rod (501).

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