Insulating device for power-frequency voltage-withstanding handover test of 10-kilovolt closed ring main unit
By designing a foldable and adjustable insulation device, the problem of insufficient safety distance of the cable holes in the industrial frequency voltage-resistant handover test of the ring net cabinet is solved, and effective protection of ring net cabinets of different sizes is achieved to ensure test safety and equipment stability.
Patent Information
- Application Number
- CN202420173304.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-24
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-01-24
AI Technical Summary
When the existing ring network cabinet is undergoing the power frequency voltage-resistant handover test, the equipment components are arranged in a compact manner, and the safety distance between the cable inlet and outlet holes is insufficient, resulting in the test failure, endangering the safety of the equipment, and the existing protective plates are difficult to adapt to ring network cabinets of different sizes. Limit the use scenarios of standardized protection.
A 10 kV closed ring network cabinet industrial frequency voltage-resistant handover test insulation device is designed, adopting a foldable protective plate structure, including a left straight plate, a middle straight plate, a right straight plate and a folding fixing assembly, which is realized by hinging and adjusting plates. The adjustability of the protective components is adapted to the ring cabinet of different sizes, and the convenience of the device is improved by hanging rings or hooks.
This device can effectively protect the left and right sides and directly above the ring net cabinet, adjust the length and height of the protective components, adapt to ring net cabinets of different sizes, ensure test safety, improve the safety performance and use flexibility of the equipment.
Smart Images
Figure CN222280670U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of voltage test protection equipment for ring network cabinets, and specifically relates to an insulation device for power frequency withstand voltage handover test of a 10 kV closed ring network cabinet. Background Art
[0002] Ring main unit - a combination of ring main unit (load switch and fuse) is called a ring main unit. At present, land resources are scarce, and the switch station occupies a small area. The original large high-voltage switch cabinet has been replaced by a small ring main unit with good sealing performance, which greatly improves the safety performance. However, it leads to compact arrangement of equipment components. When the cable inlet and outlet holes are bare, the relative safety distance cannot meet the requirements, the handover test space is small, and the difficulty coefficient is relatively high. For various 10kV and 20kV ring main units (high-voltage switch cabinets), the width of each interval is getting smaller and smaller, and the width of the closed switch cabinet is only about 400mm. The phase-to-phase distance between the 10kV cable lead-in and lead-out holes is only about 9cm, the center of the hole is only 7cm from the upper bottom metal plate, and the center of the side phase is only 5.5cm from the left and right metal plates. When the equipment is operating normally, the cable lead-in and lead-out holes are isolated by cable insulation accessories. However, when the equipment is undergoing a handover voltage test on site, the test pressure can only be connected from the cable introduction (exit) center conductive rod. If the left and right, up and down insulation isolation measures are not properly implemented, during the voltage boosting process, the phase-to-phase and relative safety distances will not meet the test standard requirements, resulting in test failure and endangering the safety of the equipment.
[0003] Based on the above-mentioned ring network power supply status, in order to ensure the safety of voltage testing, in actual production environments, ring network cabinet protection plates are usually introduced as safety measures. At present, ring network cabinet protection plates are often installed using temporary plates, which have poor protection effects and are difficult to guarantee. A standardized protection plate is needed to ensure the protection effect. Existing protection plates are difficult to use for ring network cabinets of different sizes, which greatly limits the use scenarios of standardized protection plates. For the above reasons, the utility model hopes to provide an insulation device for a 10 kV closed ring network cabinet power frequency withstand voltage acceptance test. Utility Model Content
[0004] The purpose of the utility model is to provide an insulating device for a 10 kV closed ring main unit power frequency withstand voltage handover test, so as to solve the problems raised in the above-mentioned background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] An insulating device for a 10 kV closed ring network cabinet power frequency withstand voltage acceptance test comprises a left straight plate, a middle straight plate, a right straight plate and a plurality of folding and fixing components; a plurality of left adjustment plates are arranged between the left straight plate and the middle straight plate, adjacent left adjustment plates are hinged, the left adjustment plate is hinged to the left straight plate, and the left adjustment plate is hinged to the middle straight plate; a plurality of right adjustment plates are arranged between the right straight plate and the middle straight plate, adjacent right adjustment plates are hinged, the right adjustment plate is hinged to the left straight plate, and the right adjustment plate is hinged to the middle straight plate; the folding and fixing component comprises a main fixing anchor, a plurality of adjustment anchors, a secondary fixing anchor and a fixing rod, the fixing rod can pass through the main fixing anchor, the plurality of adjustment anchors and the secondary fixing anchor in sequence, the main fixing anchor is arranged on the inner side of the left straight plate and the inner side of the right straight plate, and the secondary fixing anchor is arranged on the inner side of the middle straight plate; the plurality of adjustment anchors correspond to the adjustment plates one by one and are arranged on the inner side of the adjustment plates.
[0007] Preferably, the hinge point of the left straight plate and the adjacent left adjustment plate is located on the inner side of the left straight plate, the hinge point of the adjacent left adjustment plate is located on the inner side of the left adjustment plate, the hinge point of the middle straight plate and the adjacent left adjustment plate is located on the inner side of the middle straight plate, the hinge point of the middle straight plate and the adjacent right adjustment plate is located on the inner side of the middle straight plate, the hinge point of the adjacent right adjustment plate is located on the inner side of the right adjustment plate, and the hinge point of the right straight plate and the adjacent right adjustment plate is located on the inner side of the right straight plate.
[0008] Preferably, the ends of the left straight board and the right straight board are both provided with a plurality of extension boards and an extension fixing assembly, and the extension fixing assembly comprises two main fixing anchors, two plurality of adjustment anchors, two secondary fixing anchors and two fixing rods; the two fixing rods can sequentially pass through the two main fixing anchors, two plurality of adjustment anchors and two secondary fixing anchors, and the two main fixing anchors are arranged on the inner side of the left straight board and the inner side of the right straight board; the two plurality of adjustment anchors and two secondary fixing anchors correspond one-to-one to the extension boards and are arranged on the inner side of the extension boards.
[0009] Preferably, the outer surface of the fixing rod 1 is provided with an external thread, and the main fixing anchor 1, the plurality of adjustment anchors 1 and the auxiliary fixing anchor 1 are all provided with an internal threaded hole 1.
[0010] Further, as a preference, an outer surface of the second fixing rod is provided with an external thread, and the second main fixing anchor, the plurality of second adjustment anchors and the second auxiliary fixing anchor are provided with two internal threaded holes.
[0011] Further, as a preference, a fixing threaded hole 1 is provided on the inner wall of the internal threaded hole 1, and the head of the fixing rod 1 can be screwed into the fixing threaded hole 1.
[0012] Further, as a preference, a second fixing threaded hole is provided on the inner wall of the second internal threaded hole, and the head of the second fixing rod can be screwed into the second fixing threaded hole.
[0013] Preferably, the outer surface of the fixing rod 1 is provided with anti-slip grooves, and the tail of the fixing rod 1 is provided with a cross groove or a straight groove.
[0014] Further, as a preference, the outer surface of the second fixing rod is provided with anti-slip grooves, and the tail of the second fixing rod is provided with a cross groove or a straight groove.
[0015] Preferably, a hanging ring or a hook is provided at the top center of the middle straight board.
[0016] Compared with the prior art, the beneficial effects of the utility model are:
[0017] (1) The utility model provides an insulation device for a 10 kV closed ring main unit power frequency withstand voltage handover test, which is in a foldable form and has a protective plate placed inside the ring main unit, thereby protecting the left and right sides and the top of the ring main unit to prevent damage to adjacent equipment on the left and right sides and the top;
[0018] (2) The utility model provides an insulation device for a 10 kV closed ring main unit power frequency withstand voltage handover test. By adjusting a left adjustment plate and a right adjustment plate, the lateral length of the protection component can be adjusted to adapt to ring main units of different widths;
[0019] (3) The utility model provides an insulating device for a 10 kV closed-type ring main unit power frequency withstand voltage acceptance test. By adjusting the left adjustment plate, the right adjustment plate and the extension plate, the longitudinal height of the protective assembly can be adjusted to adapt to different longitudinal heights. When the height inside the ring main unit is relatively large, the protective assembly is hung on the top of the ring main unit by a hanging ring. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural schematic diagram of the utility model;
[0021] Figure 2 It is a partial structural schematic diagram of the utility model;
[0022] In the figure: 1. left straight plate; 2. middle straight plate; 3. right straight plate; 4. left adjustment plate; 5. right adjustment plate; 6. main fixing anchor 1; 7. adjustment anchor 1; 8. secondary fixing anchor 1; 9. fixing rod 1; 10. internal threaded hole 1; 11. fixing threaded hole 1; 12. anti-slip groove; 13. cross groove; 14. extension plate; 15. main fixing anchor 2; 16. adjustment anchor 2; 17. secondary fixing anchor 2; 18. fixing rod 2; 19. internal threaded hole 2; 20. fixing threaded hole 2; 21. hook. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] An insulating device for a 10 kV closed ring network cabinet power frequency withstand voltage handover test comprises a left straight plate 1, a middle straight plate 2, a right straight plate 3 and four groups of folding and fixing components. Four left adjustment plates 4 are arranged between the left straight plate 1 and the middle straight plate 2, and the adjacent left adjustment plates 4 are hinged, and the hinge point is located on the inner side of the left adjustment plate 4, so that the connection can only be folded inward. The left straight plate 1 and its adjacent left adjustment plate 4 are hinged, and the hinge point is located on the inner side of the left adjustment plate 4, so that the connection can only be folded inward; similarly, the right straight plate 3 and its adjacent left adjustment plate 5 are connected in the same way. In order to achieve fixation, the folding and fixing component comprises a main fixing anchor 6, four adjustment anchors 7, a secondary fixing anchor 8 and a fixing rod 9, the main fixing anchor 6 is arranged on the inner side of the left straight plate 1 and the inner side of the right straight plate 3, the secondary fixing anchor 8 is arranged on the inner side of the middle straight plate 2, and the four adjustment anchors 7 are arranged on the inner side of the adjustment plate in a one-to-one correspondence with the adjustment plate. The fixing rod 9 can pass through the main fixing anchor 6, four adjustment anchors 7 and the secondary fixing anchor 8 in sequence. The adjustment plate fixed by the fixing rod 9 is located in the same straight line as the left straight plate 1 or the right straight plate 3 and cannot be folded. In order to facilitate the adjustment of the fixing rod 9, the outer surface of the fixing rod 9 is provided with an external thread, and correspondingly, the main fixing anchor 6, several adjustment anchors 7 and the secondary fixing anchor 8 are provided with an internal thread hole 10. In order to ensure that the plane where the middle straight plate 2 is located is at a right angle to the plane where the left straight plate 1 and the right straight plate 3 are located, a fixing thread hole 11 is provided on the inner wall of the internal thread hole 10, and the head of the fixing rod 9 can be screwed into the fixing thread hole 11. In order to facilitate the adjustment of the fixing rod 9, an anti-slip pattern 12 is provided on the outer surface of the fixing rod 9, and a cross groove 13 or a straight groove is provided at the tail of the fixing rod 9. In order to adjust the longitudinal height of the device, four extension plates 14 and extension plate 14 fixing components are provided at the ends of the left straight plate 1 and the right straight plate 3. The extension plate 14 fixing components include a main fixing anchor 2 15, four adjustment anchors 2 16, a secondary fixing anchor 2 17 and a fixing rod 2 18. The main fixing anchor 2 15 is arranged on the inner side of the left straight plate 1 and the inner side of the right straight plate 3; the four adjustment anchors 2 16 and the secondary fixing anchor 2 17 correspond to the extension plates 14 one by one and are arranged on the inner side of the extension plates 14. The installation method of the extension plate 14 fixing component is the same as that of the folding fixing component. The fixing rod 2 18 can pass through the main fixing anchor 2 15, the four adjustment anchors 2 16 and the secondary fixing anchor 2 17 in sequence. An external thread is provided on the outer surface of the fixing rod 2 18, and an internal thread hole 2 19 is provided at the main fixing anchor 2 15, the four fixing anchors 2 and the secondary fixing anchor 2 17. In order to facilitate rotation and adjustment, an anti-slip pattern 12 is provided on the outer surface of the fixing rod 18, and a cross groove 13 or a straight groove is provided at the tail of the fixing rod 18. In order to fix the bent extension plate 14, a fixing threaded hole 20 is provided on the inner wall of the internal threaded hole 19, and the head of the fixing rod 18 can be screwed into the fixing threaded hole 20. A hook 21 is provided at the top center of the middle straight plate 2, and the protective plate assembly can be installed on the top inside the ring network cabinet through the hook 21, which greatly improves the convenience of the device.
[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An insulation device for a 10 kV closed ring main unit power frequency withstand voltage acceptance test, characterized in that: It comprises a left straight plate, a middle straight plate, a right straight plate and a plurality of folding and fixing components; a plurality of left adjustment plates are arranged between the left straight plate and the middle straight plate, the adjacent left adjustment plates are hinged, the left adjustment plate is hinged to the left straight plate, and the left adjustment plate is hinged to the middle straight plate; a plurality of right adjustment plates are arranged between the right straight plate and the middle straight plate, the adjacent right adjustment plates are hinged, the right adjustment plate is hinged to the left straight plate, and the right adjustment plate is hinged to the middle straight plate; the folding and fixing component comprises a main fixing anchor 1, a plurality of adjustment anchors 1, a secondary fixing anchor 1 and a fixing rod 1, the fixing rod 1 can pass through the main fixing anchor 1, the plurality of adjustment anchors 1 and the secondary fixing anchor 1 in sequence, the main fixing anchor 1 is arranged on the inner side of the left straight plate and the inner side of the right straight plate, the secondary fixing anchor 1 is arranged on the inner side of the middle straight plate; the plurality of adjustment anchors 1 correspond to the adjustment plates one by one and are arranged on the inner side of the adjustment plates.
2. The insulation device for the 10 kV closed ring main unit power frequency withstand voltage acceptance test according to claim 1, characterized in that: The hinge point of the left straight plate and the adjacent left adjustment plate is located on the inner side of the left straight plate, the hinge point of the adjacent left adjustment plate is located on the inner side of the left adjustment plate, the hinge point of the middle straight plate and the adjacent left adjustment plate is located on the inner side of the middle straight plate, the hinge point of the middle straight plate and the adjacent right adjustment plate is located on the inner side of the middle straight plate, the hinge point of the adjacent right adjustment plate is located on the inner side of the right adjustment plate, and the hinge point of the right straight plate and the adjacent right adjustment plate is located on the inner side of the right straight plate.
3. The insulation device for the 10 kV closed ring main unit power frequency withstand voltage acceptance test according to claim 1, characterized in that: The ends of the left straight plate and the right straight plate are both provided with a plurality of extension plates and an extension fixing assembly, and the extension fixing assembly comprises two main fixing anchors, two adjusting anchors, two secondary fixing anchors and two fixing rods; the two fixing rods can sequentially pass through the two main fixing anchors, the two adjusting anchors and the two secondary fixing anchors, and the two main fixing anchors are arranged on the inner side of the left straight plate and the inner side of the right straight plate; the two adjusting anchors and the two secondary fixing anchors correspond to the extension plates one by one and are arranged on the inner side of the extension plates.
4. The insulation device for the 10 kV closed ring main unit power frequency withstand voltage acceptance test according to claim 1, characterized in that: The outer surface of the fixing rod 1 is provided with an external thread, and the main fixing anchor 1, the plurality of adjustment anchors 1 and the auxiliary fixing anchor 1 are all provided with an internal thread hole 1.
5. The insulation device for the 10 kV closed ring main unit power frequency withstand voltage acceptance test according to claim 3, characterized in that: The outer surface of the second fixing rod is provided with an external thread, and the second main fixing anchor, the plurality of second adjustment anchors and the second auxiliary fixing anchor are provided with two internal thread holes.
6. The insulation device for the 10 kV closed ring main unit power frequency withstand voltage acceptance test according to claim 4, characterized in that: A fixing threaded hole 1 is arranged on the inner wall of the internal threaded hole 1, and the head of the fixing rod 1 can be screwed into the fixing threaded hole 1.
7. The insulation device for the 10 kV closed ring main unit power frequency withstand voltage acceptance test according to claim 5, characterized in that: A second fixing threaded hole is arranged on the inner wall of the second internal threaded hole, and the head of the second fixing rod can be screwed into the second fixing threaded hole.
8. The insulation device for the 10 kV closed ring main unit power frequency withstand voltage acceptance test according to claim 1, characterized in that: The outer surface of the fixing rod 1 is provided with anti-skid grooves, and the tail of the fixing rod 1 is provided with a cross groove or a straight groove.
9. The insulation device for the 10 kV closed ring main unit power frequency withstand voltage acceptance test according to claim 3, characterized in that: The outer surface of the second fixing rod is provided with anti-skid grooves, and the tail of the second fixing rod is provided with a cross groove or a straight groove.
10. The insulation device for the 10 kV closed ring main unit power frequency withstand voltage acceptance test according to claim 1, characterized in that: A hanging ring or a hook is provided at the top center of the middle straight board.