High and low voltage power distribution cabinet electrical property measuring device

Abstract

The invention relates to the technical field of electrical performance testing devices, and discloses a high-low voltage power distribution cabinet electrical performance measuring device which comprises a measuring rack, an industrial personal computer and an electric leakage measuring assembly, the industrial personal computer is fixedly arranged on the measuring rack, a power distribution cabinet body is arranged on the measuring rack, and the electric leakage measuring assembly is arranged on the measuring rack. The electric leakage measurement assembly comprises a flexible steel belt, a power supply measurement unit and a multi-point verification unit, and the flexible steel belt is partially attached to the power distribution cabinet main body. The invention particularly provides an electrical property measuring device for a high-low voltage power distribution cabinet, which is provided with a flexible steel belt and an insulating extension belt and can form surface contact with the power distribution cabinet to measure electricity.

Description

Technical Field

[0001] The invention relates to the technical field of electrical performance testing devices, and in particular to an electrical performance measuring device for a high and low voltage distribution cabinet. Background Art

[0002] An invention patent with application number 202310245418.8 discloses a safety performance testing device for a distribution cabinet, and specifically discloses the technical solution of "through the setting of the paint scraping port, the detection wheel assembly and the power supply circuit assembly, it can continuously contact different plane positions on the surface of the distribution cabinet through multiple exposed contacts, and at the same time display the results of the insulation performance test on the electric meter outside the cabinet."

[0003] Although the technical solution of the application can detect the insulation performance of different positions of the distribution cabinet, the multiple contacts in the detection wheel assembly form point contacts with the distribution cabinet with intervals, and there is a phenomenon of missed detection between multiple contact points. At the same time, the technical solution of the application does not have the function of marking the location of the leakage point in real time when the distribution cabinet is leaking, 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 property measuring device for high and low voltage distribution cabinets. In order to solve the problem that insulation detection of distribution cabinets in the prior art is prone to missing points, the present invention proposes an electrical property measuring device for high and low voltage distribution cabinets having a flexible steel belt and an insulating extension belt and capable of forming surface contact with the distribution cabinet for electrical measurement.

[0005] The technical solution adopted by the present invention is as follows: an electrical property measuring device for a high and low voltage distribution cabinet, comprising a measuring frame, an industrial computer and a leakage measurement component, wherein the industrial computer is fixedly mounted on the measuring frame, a distribution cabinet body is arranged on the measuring frame, and the leakage measurement component is arranged on the measuring frame, wherein the leakage measurement component comprises a flexible steel belt, a power supply measurement unit and a multi-point verification unit, and wherein a portion of the flexible steel belt is fitted on the distribution cabinet body.

[0006] Furthermore, the leakage measurement component also includes a main electric push rod, a single-sided constraint frame, a torsion constraint sleeve, a sliding rod and a winding shaft. The main electric push rod is located directly above the measuring frame, the single-sided constraint frame is detachably arranged on the output end of the main electric push rod, the torsion constraint sleeve is rotatably arranged in the single-sided constraint frame, and there is a torque between the torsion constraint sleeve and the single-sided constraint frame, one end of the sliding rod is engaged in the torsion constraint sleeve, the winding shaft is slidably arranged on the sliding rod, and one end of the flexible steel belt is wound on the winding shaft.

[0007] Furthermore, the leakage measurement component also includes an insulating extension belt and a bar magnet. The insulating extension belt is fixed on the end of the flexible steel belt away from the winding axis. The insulating extension belt is closely connected to the main body of the distribution cabinet. The insulating extension belt and the flexible steel belt are respectively adhered to two adjacent planes on the inner surface of the main body of the distribution cabinet. The bar magnet is fixed on the insulating extension belt. There is a magnetic attraction between the bar magnet and the main body of the distribution cabinet.

[0008] Furthermore, a paint scraping port is provided on the outer surface of the main body of the distribution cabinet, and the power supply measuring unit is located on the measuring frame. The power supply measuring unit includes a terminal, internal and external connecting wires, a battery and an ammeter. The terminal is fixed on a flexible steel belt, and the connector of the ammeter is in contact with the paint scraping port. The ammeter is connected to the battery wire, and the internal and external connecting wires are fixed between the terminal and the battery.

[0009] Furthermore, the multi-point verification unit is located on the measuring frame, and the multi-point verification unit includes a scraper, a pressure spring, a vertical extension bracket, a covering electric push rod and an electric tape machine. A scraping groove is opened on the single-sided constraint frame, and the scraper is slidably penetrated in the scraping groove. The scraper is fitted on the flexible steel belt, and the pressure spring is fixed between the scraper and the single-sided constraint frame. The vertical extension bracket is fixed on the output end of the main electric push rod, the covering electric push rod is fixed at the bottom end of the vertical extension bracket, and the electric tape machine is fixed at the bottom end of the covering electric push rod.

[0010] Furthermore, a telescopic support platform is fixedly provided on the measuring machine frame, a connecting sleeve is slidably provided on the top of the telescopic support platform, and the connecting sleeve is detachably provided on the main electric push rod.

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

[0012] Furthermore, when the current indication number is not zero, the main electric push rod is extended; when the current indication number returns to zero, the covering electric push rod is extended and the electric tape machine works.

[0013] The beneficial effects achieved by the present invention using the above structure are as follows: 1. In response to the problem in the prior art that "point contacts with intervals are formed between multiple contacts and the distribution cabinet, and there is a phenomenon of detection omissions between multiple contact points", the present application proposes a leakage measurement component that establishes a strip contact area through a flexible steel belt, which solves the omission problem in point contact measurement and has a faster measurement speed than point contact measurement.

[0014] 2. The present invention is designed to include a multi-point verification unit covering the electric push rod and the electric tape machine. Based on the basic solution of establishing a strip contact area to quickly detect leakage points 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 discovered.

[0015] 3. When the flexible steel belt is tightened onto the winding shaft, a scraper with a compression force provided by a pressure spring is used to scrape and clean the flexible steel belt to prevent the insulating coating from sticking to the bottom of the flexible steel belt, which would affect the reliability of subsequent insulation measurements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of an electrical property measuring device for high and low voltage distribution cabinets of the present invention.

[0017] Figure 2 It is a cross-sectional schematic diagram of an electrical property measuring device for a high and low voltage distribution cabinet of the present invention.

[0018] Figure 3 It is a three-dimensional schematic diagram of the leakage measurement component of the present invention.

[0019] Figure 4 It is a three-dimensional schematic diagram of the winding shaft, flexible steel belt, insulating extension belt and bar magnet of the present invention.

[0020] Figure 5 It is a three-dimensional schematic diagram of the torsion restraint sleeve, the slide rod and the winding shaft of the present invention.

[0021] Figure 6 It is a cross-sectional schematic diagram of the torsion restraint sleeve, the slide rod and the winding shaft of the present invention.

[0022] Figure 7 It is a three-dimensional schematic diagram of the power supply measurement unit of the present invention.

[0023] Figure 8 It is a three-dimensional schematic diagram of a single-side restraint frame and a multi-point verification unit of the present invention.

[0024] Fig. 9 It is a stereoscopic schematic diagram of the single-side restraint frame and the multi-point verification unit of the present invention from another perspective.

[0025] Among them, 1. measuring rack, 2. distribution cabinet body, 201. paint scraping port, 3. telescopic support platform, 4. connecting sleeve, 5. leakage measurement component, 501. main electric push rod, 502. single-side constraint frame, 503. torsion constraint sleeve, 504. sliding rod, 505. winding shaft, 506. flexible steel belt, 507. insulating extension belt, 508. bar magnet, 6. power supply measurement unit, 601. terminal, 602. internal and external connecting wires, 603. battery, 604. ammeter, 7. multi-point verification unit, 701. scraping groove, 702. scraper, 703. pressure spring, 704. vertical extension bracket, 705. covering electric push rod, 706. electric tape machine, 8. industrial computer.

[0026] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the 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 therefore cannot be understood as a limitation on the present invention.

[0029] like Figure 1 to Figure 9 As shown, an electrical property measuring device for a high and low voltage distribution cabinet includes a measuring frame 1, an industrial computer 8 and a leakage measurement component 5. The industrial computer 8 is fixed on the measuring frame 1. A distribution cabinet body 2 is provided on the measuring frame 1. The leakage measurement component 5 is provided 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. The flexible steel belt 506 is partially fitted on the distribution cabinet body 2.

[0030] like Figure 1 to Figure 9As shown, the leakage measurement component 5 also includes a main electric push rod 501, a single-sided constraint frame 502, a torsion constraint sleeve 503, a slide rod 504 and a winding shaft 505. The main electric push rod 501 is located directly above the measuring frame 1, the single-sided constraint frame 502 is detachably arranged on the output end of the main electric push rod 501, the torsion constraint sleeve 503 is rotatably arranged in the single-sided constraint frame 502, and there is a torque between the torsion constraint sleeve 503 and the single-sided constraint frame 502. One end of the slide rod 504 is engaged in the torsion constraint sleeve 503, the winding shaft 505 is slidably arranged on the slide rod 504, and one end of the flexible steel belt 506 is wound on the winding shaft 505.

[0031] like Figure 1 to Figure 9 As shown, a paint scraping port 201 is provided on the outer surface of the distribution cabinet body 2, and the power supply measuring unit 6 is located on the measuring frame 1. The power supply measuring unit 6 includes a terminal 601, internal and external connecting wires 602, a battery 603 and an ammeter 604. The terminal 601 is fixed on the flexible steel belt 506, and the connector of the ammeter 604 is in contact with the paint scraping port 201. The ammeter 604 is connected to the battery 603 by wire, and the internal and external connecting wires 602 are fixed between the terminal 601 and the battery 603.

[0032] like Figure 1 to Figure 9 As shown, the multi-point verification unit 7 is located on the measuring frame 1, and the multi-point verification unit 7 includes a scraper 702, a pressure spring 703, a vertical extension bracket 704, a covering electric push rod 705 and an electric tape machine 706. A scraping groove 701 is opened on the single-sided constraint frame 502, and the scraper 702 slides through the scraping groove 701. The scraper 702 is fitted on the flexible steel belt 506, and the pressure spring 703 is fixed between the scraper 702 and the single-sided constraint frame 502. The vertical extension bracket 704 is fixed on the output end of the main electric push rod 501, the covering electric push rod 705 is fixed at the bottom end of the vertical extension bracket 704, and the electric tape machine 706 is fixed at the bottom end of the covering electric push rod 705.

[0033] like Figure 1 to Figure 9 As shown, the leakage measurement component 5 also includes an insulating extension belt 507 and a bar magnet 508. The insulating extension belt 507 is fixed on the end of the flexible steel belt 506 away from the winding shaft 505. The insulating extension belt 507 is closely connected to the distribution cabinet body 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 distribution cabinet body 2. The bar magnet 508 is fixed on the insulating extension belt 507. There is a magnetic attraction between the bar magnet 508 and the distribution cabinet body 2.

[0034] like Figure 1 to Figure 9 As shown, the main electric push rod 501 is connected to the industrial computer 8 by signal, the ammeter 604 is connected to the industrial computer 8 by signal, the covering electric push rod 705 is connected to the industrial computer 8 by signal, and the electric tape machine 706 is connected to the industrial computer 8 by signal.

[0035] like Figure 1 to Figure 9 As 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 tape machine 706 works.

[0036] like Figure 1 to Figure 9 As shown, a telescopic support platform 3 is fixedly provided on the measuring frame 1 , a connecting sleeve 4 is slidably provided on the top of the telescopic support platform 3 , and the connecting sleeve 4 is detachably provided on the main electric push rod 501 .

[0037] When in use, the height of the telescopic support platform 3 and the position of the connecting sleeve 4 are adjusted, thereby adjusting the height of the main electric push rod 501 and the lateral position relative to the distribution cabinet body 2. The staff holds the insulating extension belt 507 and sticks it on the inner wall of the distribution cabinet body 2, and the magnetic attraction between the bar magnet 508 and the distribution cabinet body 2 keeps the insulating extension belt 507 and the distribution cabinet body 2 stationary.

[0038] In the process of posting the insulating extension tape 507, the flexible steel tape 506 wound on the winding shaft 505 is gradually released and adhered to the inner surface of the distribution cabinet body 2 to form a closely contacted strip area. If there is a phenomenon that the insulation coating on the surface of the distribution cabinet body 2 is insufficient in this strip area, a closed current loop is formed between the battery 603, the ammeter 604, the paint scraping port 201, the distribution cabinet body 2, the leakage point on the strip area, the flexible steel tape 506, the terminal 601 and the internal and external connecting wires 602. The ammeter 604 measures a non-zero current reading and indicates to the industrial computer 8 a signal that "there is leakage in the current measured strip area on the inner surface of the distribution cabinet body 2".

[0039] After the industrial computer 8 receives the "leakage on the inner surface of the distribution cabinet body 2" signal, the main electric push rod 501 begins to extend, causing the single-sided restraint frame 502 to gradually approach the direction of the distribution cabinet body 2, thereby reducing the distance between the end of the flexible steel belt 506 connected to the insulating extension belt 507 and the end of the flexible steel belt 506 connected to the winding shaft 505. As the single-sided constraint frame 502 approaches the distribution cabinet body 2, under the action of the torque between the torsion constraint sleeve 503 and the single-sided constraint frame 502, the torsion constraint sleeve 503, the slide rod 504, and the winding shaft 505 rotate, and the flexible steel belt 506 is gradually tightened onto the winding shaft 505, thereby preventing the part of the flexible steel belt 506 that is tightly attached to the distribution cabinet body 2 from loosening and causing poor contact (in the process of the flexible steel belt 506 being tightened onto the winding shaft 505, the scraper 702 with the clamping force provided by the pressure spring 703 scrapes and cleans the flexible steel belt 506, thereby preventing the insulating coating from sticking to the bottom surface of the flexible steel belt 506, which affects the reliability of subsequent insulation measurements).

[0040] The end of the flexible steel belt 506 close to the single-sided restraint frame 502 is gradually tightened onto the winding shaft 505, so that the area of ​​the "strip area in contact between the flexible steel belt 506 and the distribution cabinet body 2" gradually decreases. When the reading of the ammeter 604 returns to zero, the industrial computer 8 determines that the nearest separation point between the distribution cabinet body 2 and the flexible steel belt 506 is a leakage point on the inner surface of the distribution cabinet body 2. At this time, while the main electric push rod 501 continues to extend, the industrial computer 8 controls the covering electric push rod 705 and the electric tape machine 706 to operate. The extension of the covering electric push rod 705 drives the electric tape machine 706 downward, and the electric tape machine 706 releases the insulating tape and sticks it on the leakage point just measured in the distribution cabinet body 2 and cuts the insulating tape to form a mark.

[0041] The reading of the ammeter 604 returns to zero, indicating that there is no leakage in the "partial strip area where the flexible steel belt 506 is currently in contact with the main body 2 of the power distribution cabinet", but it cannot indicate that "there is only one leakage point in the partial strip area separated from the flexible steel belt 506". That is, after the electric tape machine 706 sticks the insulating tape on the leakage point currently measured, a re-inspection is required to avoid "multiple leakage points in the partial strip area separated from the flexible steel belt 506".

[0042] The main electric push rod 501 shrinks back to the initial state, thereby overcoming the torsion force provided by the torsion constraint sleeve 503, and releasing part of the flexible steel belt 506 wound on the winding shaft 505 again, so that the flexible steel belt 506 is closely attached to the distribution cabinet body 2 (there is an insulating tape between the measured leakage point and the flexible steel belt 506). If the current meter 604 shows zero at this time, it means that all leakage points have been found in the entire strip area, and the staff can adjust the position of the telescopic support platform 3 and the connection sleeve 4 to measure the remaining areas of the distribution cabinet body 2; if the current meter 604 shows non-zero at this time, it means that there are still leakage points in the entire strip area.

[0043] When there are still leakage points, the industrial computer 8 controls the main electric push rod 501 to extend again, so that the strip area where the flexible steel belt 506 contacts the power distribution cabinet body 2 is reduced again. When the ammeter 604 shows zero, it can be confirmed that the nearest separation point between the flexible steel belt 506 and the power distribution cabinet body 2 is a leakage point on the inner surface of the power distribution cabinet body 2. Through repeated measurements, all leakage points in the entire strip area can be confirmed and marked by applying insulating tape through the electric tape machine 706, which is convenient for subsequent repair of the insulating coating.

[0044] The function of the detachable connection between the single-sided restraint frame 502 and the main electric push rod 501 and the snap-fit ​​connection between the torsion restraint sleeve 503 and the slide bar 504 is that when the leakage measurement assembly 5 is in use, the flexible steel belt 506 is closely attached to one inner surface of the power distribution cabinet body 2, and the single-sided restraint frame 502 located on the side of the flexible steel belt 506 interferes with at most one inner surface of the power distribution cabinet body 2. Through the detachable connection between the single-sided restraint frame 502 and the main electric push rod 501 and the snap-fit ​​connection between the torsion restraint sleeve 503 and the slide bar 504, when the flexible steel belt 506 needs to be closely attached to the edge of the inner surface of the power distribution cabinet body 2, the staff can remove 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 slide bar 504, so that a temporary disconnected state is formed between the main electric push rod 501 and the winding shaft 505. Then the staff rotates the single-side restraint frame 502 180 degrees relative to the axis direction of the main electric push rod 501 and installs it back on the main electric push rod 501; slides the slide bar 504 along the inside of the winding shaft 505, so that the other end of the slide bar 504 is engaged with the torsion restraint sleeve 503. At this point, the staff has completed the position exchange of the single-side restraint frame 502 and the torsion restraint sleeve 503, so as to avoid interference when the flexible steel belt 506 is close to the edge of the inner surface of the power distribution cabinet body 2.

[0045] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for measuring electrical properties of high and low voltage distribution cabinets, characterized in that: The invention comprises a measuring frame (1), an industrial computer (8) and a leakage current measurement component (5), wherein the industrial computer (8) is fixedly mounted on the measuring frame (1), a power distribution cabinet body (2) is arranged on the measuring frame (1), and the leakage current measurement component (5) is arranged on the measuring frame (1), wherein the leakage current measurement component (5) comprises a flexible steel belt (506), a power supply measurement unit (6) and a multi-point verification unit (7), and the flexible steel belt (506) is partially fitted on the power distribution cabinet body (2).

2. The electrical property measuring device for high and low voltage distribution cabinets according to claim 1 is characterized in that: The leakage current measurement component (5) further comprises a main electric push rod (501), a single-sided constraint frame (502), a torsion constraint sleeve (503), a sliding rod (504) and a winding shaft (505); the main electric push rod (501) is located directly above the measuring frame (1); the single-sided constraint frame (502) is detachably arranged on the output end of the main electric push rod (501); the torsion constraint sleeve (503) is rotatably arranged in the single-sided constraint frame (502); torque exists between the torsion constraint sleeve (503) and the single-sided constraint frame (502); one end of the sliding rod (504) is engaged in the torsion constraint sleeve (503); the winding shaft (505) is slidably arranged on the sliding rod (504); and one end of the flexible steel belt (506) is wound on the winding shaft (505).

3. The electrical property measuring device for high and low voltage distribution cabinets according to claim 2 is characterized in that: The power distribution cabinet body (2) has a paint scraping opening (201) on its outer surface. The power supply measurement unit (6) is located on the measurement frame (1). The power supply measurement unit (6) comprises a terminal (601), internal and external connecting wires (602), a battery (603) and an ammeter (604). The terminal (601) is fixedly mounted on a flexible steel strip (506). The connector of the ammeter (604) is in contact with the paint scraping opening (201). The ammeter (604) is connected to a battery (603) by a wire. The internal and external connecting wires (602) are fixedly mounted between the terminal (601) and the battery (603).

4. The electrical property measuring device for high and low voltage distribution cabinets according to claim 3 is characterized in that: The multi-point verification unit (7) is located on the measuring machine frame (1), and comprises a scraper (702), a pressure spring (703), a vertical extension bracket (704), a covering electric push rod (705) and an electric tape dispenser (706); a scraping groove (701) is provided on the single-sided constraint frame (502), the scraper (702) is slidably penetrated in the scraping groove (701), the scraper (702) is fitted on the flexible steel belt (506), the pressure spring (703) is fixedly arranged between the scraper (702) and the single-sided constraint frame (502), the vertical extension 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 vertical extension bracket (704), and the electric tape dispenser (706) is fixedly arranged at the bottom end of the covering electric push rod (705).

5. The electrical property measuring device for high and low voltage distribution cabinets according to claim 4 is characterized in that: The leakage current measurement component (5) further comprises an insulating extension belt (507) and a bar magnet (508); the insulating extension belt (507) is fixedly arranged on an end of the flexible steel belt (506) away from the winding shaft (505); the insulating extension belt (507) is closely connected to the power distribution cabinet body (2); the insulating extension belt (507) and the flexible steel belt (506) are respectively closely attached to two adjacent planes on the inner surface of the power distribution cabinet body (2); the bar magnet (508) is fixedly arranged on the insulating extension belt (507); and there is a magnetic attraction between the bar magnet (508) and the power distribution cabinet body (2).

6. The electrical property measuring device for high and low voltage distribution cabinets according to claim 5 is characterized in that: The main electric push rod (501) is connected to the industrial computer (8) by signal, the ammeter (604) is connected to the industrial computer (8) by signal, the covering electric push rod (705) is connected to the industrial computer (8) by signal, and the electric tape dispenser (706) is connected to the industrial computer (8) by signal.

7. The electrical property measuring device for high and low voltage distribution cabinets according to claim 6 is characterized in that: When the reading of the ammeter (604) is not zero, the main electric push rod (501) is extended; when the reading of the ammeter (604) returns to zero, the covering electric push rod (705) is extended and the electric tape machine (706) works.

8. The electrical property measuring device for high and low voltage distribution cabinets according to claim 7 is characterized in that: A telescopic support platform (3) is fixedly provided on the measuring machine frame (1), a connecting sleeve (4) is slidably provided on the top end of the telescopic support platform (3), and the connecting sleeve (4) is detachably provided on the main electric push rod (501).

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