High voltage switch transport support device

Abstract

The application belongs to the field of supporting tools for high-voltage switch transportation, and particularly relates to a high-voltage switch transportation supporting device. The high-voltage switch transportation supporting device comprises a supporting unit, the supporting unit comprises a supporting piece, one end of the supporting piece is a supporting seat, and the other end is a mounting structure for mounting and fixing with a mounting ring of a high-voltage switch. The supporting unit further comprises a lining piece, one end of the lining piece is used for abutting against a fixed ring of the high-voltage switch, and the other end of the lining piece can extend out of a shielding cover mounted on the mounting ring and abut against the supporting piece, so that the supporting piece and the shielding cover mounted on the mounting ring are kept apart. The mounting of the supporting piece on the mounting ring is realized through the mounting structure. On this basis, the lining piece is designed. The supporting piece is prevented from contacting the shielding cover after being mounted in place through the blocking of the lining piece, the thin-wall shielding cover is prevented from being deformed under pressure, and the high-voltage switch transportation supporting device can be well applied to the high-voltage switch with a closing resistor.

Description

Technical Field

[0001] This invention belongs to the field of support tools for transporting high-voltage switches, and in particular relates to a support device for transporting high-voltage switches. Background Technology

[0002] During transportation, high-voltage switches are designed with appropriate transport support devices to support the suspended components inside the switch during transport and to prevent them from being worn or damaged by vibration. The transport support devices are then removed after the switch reaches its destination.

[0003] For example, Chinese invention patent application CN114476334A discloses a high-voltage switch transportation protection device. The transportation protection device includes a support base that supports and cooperates with the inner wall of the high-voltage switch cylinder, a retaining body for connecting with the protected part of the high-voltage switch, and a support column connected between the support base and the retaining body, so as to maintain the position of the stationary contact and the moving contact inside the high-voltage switch and prevent the stationary contact and the moving contact from being worn by vibration during the transportation of the high-voltage switch.

[0004] In engineering practice, high-voltage switches have various structural forms, such as Figure 1 The high-voltage switch shown includes a housing 1, with an insulating basin 2 at one end of the housing 1. A support 3 is fixed to one side of the insulating basin 2 inside the housing 1. To handle inrush current or suppress rapid operating overvoltage in the line, a closing resistor is also provided inside the housing 1. Specifically, a resistor string 4 extending along the length of the housing 1 is fixed to the support 3. Besides the resistor string 4, other components include... Figure 2 As shown, an extended insulating rod 5 is also fixed on the support 3. A mounting ring 6 is fixed to the end of the resistor string 4 and the insulating rod 5 away from the support 3. A shielding cover 8 is fixed to the mounting ring 6 via a transition support 7. The transition support 7 is provided to create a gap between the shielding cover 8 and the mounting ring 6. Figure 3 As shown, resistor strings 4 and insulating rods 5 are arranged at intervals along the circumference of mounting ring 6. The assembly consisting of resistor strings 4, insulating rods 5, mounting ring 6, transition support 7, and shielding cover 8 is suspended within housing 1. The greater the mass of the assembly and the longer the cantilever, the greater the vibration damage caused by bumps during transportation, which can easily lead to damage to components and wear between resistor elements, thereby affecting product performance or increasing the workload of on-site installation and inspection.

[0005] Existing transport support devices are specialized and only applicable to high-voltage switches with their corresponding structures. For high-voltage switches equipped with closing resistors, there is currently no transport support device capable of providing internal support. Furthermore, the design of transport support devices for such high-voltage switches must ensure that they do not damage the shielding inside the high-voltage switch during use. Summary of the Invention

[0006] The purpose of this invention is to provide a high-voltage switch transport support device to solve the technical problem of the lack of a transport support device in the prior art that can be applied to high-voltage switches with closing resistors to support their internal components without damaging the shielding cover.

[0007] To achieve the above objectives, the technical solution of the high-voltage switchgear transport support device provided by the present invention is as follows: A high-voltage switch transport support device includes a support unit. The support unit includes a support member, one end of which is a support seat for supporting and cooperating with the inner wall of the high-voltage switch housing, and the other end is a mounting structure. The mounting structure has a fixing hole or a fixing post for cooperating with a mounting hole on the mounting ring of the high-voltage switch to install and fix the support member inside the high-voltage switch. The support unit also includes a liner, one end of which is used to abut against the fixing ring of the high-voltage switch, and the other end can extend out of a shielding cover installed on the mounting ring and abut against the support member to maintain a gap between the support member and the shielding cover installed on the mounting ring.

[0008] As a further improvement, the bushing is a cylindrical bushing used to fit onto a threaded fastener that mates with the fixing hole and mounting hole to mount the support on the mounting ring of the high-voltage switch, or to fit onto the fixing post.

[0009] As a further improvement, the support includes a support structure connected between the support base and the mounting structure. The side of the support base near the inner wall of the high-voltage switch housing forms a channel space with the support structure, allowing the operator to pass through the support along the central axis of the high-voltage switch housing or allowing the operator's arm to pass through the support along the central axis of the high-voltage switch housing.

[0010] As a further improvement, the support structure consists of two support rods connected between the support base and the mounting structure, with at least one support rod and the support base forming a passageway for the operator to pass through, and an arm passageway for the operator's arm to pass through between two adjacent support rods.

[0011] As a further improvement, the mounting structure has multiple fixing holes or fixing posts.

[0012] As a further improvement, the support includes a support rod connected between the support base and the mounting structure, one end of which is detachably connected to the mounting structure and the other end is threadedly connected to the support base, so that the height of the support can be adjusted by changing the amount of thread engagement between the support rod and the support base.

[0013] As a further improvement, the mounting structure includes an L-shaped plate structure with a first folded edge and a second folded edge. A support rod mounting hole is provided on the first folded edge, and the end of the support rod that mates with the first folded edge has an external thread. The support rod is mounted on the first folded edge by mates with a nut. The fixing hole is provided on the second folded edge.

[0014] As a further improvement, the fixing holes and support rod mounting holes are arranged in a circumferentially offset manner along the high-voltage switch housing.

[0015] As a further improvement, the high-voltage switch transport support device includes at least two support units, each of which is circumferentially distributed along the mounting ring of the high-voltage switch.

[0016] As a further improvement, the support base includes a support crossbar, which is used to be placed horizontally inside the high-voltage switch housing in a direction perpendicular to the central axis of the high-voltage switch. Both ends of the support crossbar are provided with buffer plates whose dimensions are larger than the support crossbar in the direction of the central axis of the high-voltage switch housing.

[0017] The beneficial effects are as follows: Compared with existing high-voltage switch transport support devices, the high-voltage switch transport support device in this invention has been structurally improved, belonging to an improved invention. This makes the high-voltage switch transport support device suitable for high-voltage switches with closing resistors. Specifically, the installation structure is designed with fixing holes or fixing posts that mate with the mounting holes on the inner mounting ring of the high-voltage switch. By inserting threaded fasteners into the fixing holes and mounting holes or inserting and fixing the fixing posts into the mounting holes, the support can be installed on the mounting ring. In addition, a bushing is designed. The bushing prevents the support from contacting the shielding cover after it is installed, preventing the thin-walled shielding cover from being deformed by pressure. This makes the high-voltage switch transport support device well-suited for high-voltage switches with closing resistors without damaging the shielding cover. Attached Figure Description

[0018] Figure 1 This is a partial structural schematic diagram of the display insulating rod of the high-voltage switch applicable to the high-voltage switch transport support device of the present invention; Figure 2 This is a partial structural diagram of the display resistor string of the high-voltage switch applicable to the high-voltage switch transport support device of the present invention. Figure 3 This is a partial structural schematic diagram of the high-voltage switch applicable to the high-voltage switch transport support device of the present invention, viewed from the perspective of its central axis toward the location of the support. Figure 4 This is a schematic diagram showing the usage status of the high-voltage switch transport support device in this invention; Figure 5This is a schematic diagram of the support component of the high-voltage switch transport support device in this invention; Figure 6 for Figure 4 A schematic diagram of the partial fit between the support component and the mounting ring from a mid-A direction perspective; Figure 7 This is a schematic diagram of the structure of the high-voltage switch after the mounting hole is opened on the mounting ring of the high-voltage switch to which the high-voltage switch transport support device is applicable in this invention. Figure 8 This is a schematic diagram of the high-voltage switch transport support device installed inside the high-voltage switch in this invention; Figure 9 for Figure 8 Enlarged view of a section at point B in the middle; Figure 10 This is a schematic diagram showing the route taken by operators when installing the high-voltage switch transport support device of the present invention inside the high-voltage switch. Explanation of reference numerals in the attached figures: 1. Housing; 2. Insulating basin; 3. Support; 4. Resistor string; 5. Insulating rod; 6. Mounting ring; 7. Transition support; 8. Shielding cover; 9. Support base; 10. Mounting structure; 11. Support rod; 12. Support crossbar; 13. Buffer plate; 14. Bending plate; 15. Mounting hole; 16. Bolt; 17. Tightening nut; 18. Bushing; 19. Channel space; 20. Screw; 21. First fold; 22. Second fold; 23. Fixing hole. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the embodiments.

[0020] In this invention, the high-voltage switch transport support device is designed with fixing holes or fixing posts in its installation structure, so that the installation structure can cooperate with the mounting holes opened on the mounting ring inside the high-voltage switch with the closing resistor, thereby realizing the installation of the high-voltage switch transport support device inside the high-voltage switch with the closing resistor. At the same time, a bushing that cooperates with the support is provided. With the bushing blocking, the support and the shielding cover inside the high-voltage switch are spaced together to prevent the thin-walled shielding cover from being deformed by pressure, so that the high-voltage switch transport support device can be used for high-voltage switches with the closing resistor.

[0021] The present invention will be further described in detail below with reference to the embodiments.

[0022] Specific embodiment 1 of the high-voltage switch transport support device provided by the present invention: In this embodiment, as Figure 4As shown, the high-voltage switch transport support device includes two support units with identical structures. Each support unit includes a support member, which specifically includes a support seat 9 for engaging with the inner wall of the high-voltage switch housing 1 and an mounting structure 10 for mounting the support member on the mounting ring 6 inside the high-voltage switch. The support seat 9 and the mounting structure 10 are connected by a support rod 11.

[0023] like Figure 5 As shown, the support base 9 includes a support crossbar 12 arranged along the central axis perpendicular to the housing 1 of the high-voltage switch. A buffer plate 13 is mounted at each end of the support crossbar 12 by screws 20. The buffer plate 13 has an arc-shaped surface adapted to the inner wall surface of the housing 1 of the high-voltage switch. The buffer plate 13 prevents the support base 9 from scratching the inner wall of the housing 1 of the high-voltage switch. In this embodiment, the buffer plate 13 is a polytetrafluoroethylene (PTFE) plate. In other embodiments, the buffer plate can also be made of other materials that can achieve the functional requirements here, possessing a certain degree of hardness to provide support, but with a hardness less than that of the housing, thus protecting the housing. Along the central axis of the housing 1 of the high-voltage switch, the size of the buffer plate 13 is larger than the size of the support crossbar 12, to ensure stable and reliable support of the support base 9 on the inner wall of the housing 1. In other embodiments, the support base can be a support block with an arc-shaped surface adapted to the inner wall surface of the housing of the high-voltage switch.

[0024] like Figure 5 and Figure 6 As shown, the mounting structure includes an L-shaped bent plate 14, which has a first folded edge 21 and a second folded edge 22. The first folded edge 21 has a support rod mounting hole, and the second folded edge 22 has a fixing hole 23. Correspondingly, as... Figure 7 As shown, a mounting hole 15 is provided on the mounting ring 6 of the high-voltage switch, and a clearance hole aligned with the mounting hole 15 is provided on the shielding cover 8. During installation, as... Figure 8 and Figure 9 As shown, aligning the fixing hole 23 with the mounting hole 15, and inserting bolts 16 and nuts into the fixing hole 23 and mounting hole 15, allows the support to be fixed to the mounting ring 6 of the high-voltage switch. In other embodiments, a fixing post can be fixedly installed on the second fold of the bent plate. The end of the fixing post away from the second fold has an external thread. During installation, the fixing post is inserted into the mounting hole and protrudes through the mounting hole. A nut is screwed onto the protruding end to fix the support plate on the mounting plate of the high-voltage switch. In this case, a bushing is fitted onto the fixing post.

[0025] The support rod 11 has an external thread at one end that mates with the first flange 21. Nuts are provided on both sides of the first flange 21 to mate with the support rod 11, allowing for detachable installation of the support rod 11 on the first flange 21. In other embodiments, nuts can be fixedly installed on the first flange corresponding to the support rod mounting holes, directly screwing the support rod to the first flange. In all the above embodiments, the support rod is detachably installed on the first flange via a threaded connection structure. In other embodiments, the end of the support rod mates with the first flange can be configured as a stepped shaft structure with a reduced end diameter. The smaller diameter section of the stepped shaft structure is inserted into the support rod mounting hole, and the second flange engages with the stepped stop of the stepped shaft structure, thus achieving detachable installation of the support rod on the mounting structure. The other end of the support rod 11 also has an external thread and is screwed onto the support base 9, specifically onto the support crossbar 12 of the support base 9. The height of the support member can be adjusted by changing the amount of screwing the support rod 11 into the support base 9. A tightening nut 17 is provided on the support rod 11 to mate with the support base 9. In other embodiments, a threaded hole may be provided at one end of the support rod that mates with the support base, and a stud that mates with the threaded hole may be fixedly provided on the support base accordingly.

[0026] The L-shaped bent plate 14 is used as the installation structure, so that there is a certain distance between the installation position of the support rod 11 on the installation structure and the fixing hole 23 in the axial direction of the high voltage switch housing 1, which facilitates the operator to install the support on the mounting ring 6.

[0027] In other embodiments, the mounting structure can also be a block structure with fixing holes or fixing posts. The support can also be an integral structure, where the mounting structure, support rod, and support base are fixedly connected, and the height of the support is no longer adjustable. Alternatively, the support can be a single, integral support plate or block, with fixing holes or fixing posts at the upper end and the lower end fitting into the inner wall of the high-voltage switch housing to form a support base.

[0028] To prevent the thin-walled shield 8 from deforming due to pressure caused by contact between the support member and the shield 8 of the high-voltage switch, the support unit also includes a bushing. In this embodiment, the bushing is a cylindrical sleeve 18 fitted onto the screw 16. One end of the sleeve 18 abuts against the mounting ring 6 of the high-voltage switch, and the other end extends beyond the shield 8 and abuts against the support member. This maintains a gap between the support member and the shield 8, preventing the shield 8 from being deformed by the pressure of the support member. The screw 16 forms a threaded fastener for fitting the sleeve 18. In other embodiments, the bushing may not be fitted onto the screw. In this case, a bushing through hole is specially made on the shield 8 for the bushing to extend out. After extending from inside the shield 8, the bushing abuts against the support member. Since it does not need to be fitted onto the screw, the bushing does not need to be cylindrical; it can be a solid rod. Since the bushing is used to support the support member, it needs to have a certain degree of hardness. In this embodiment, the bushing is made of iron. In other embodiments, the bushing can be made of other materials, as long as it meets the requirements of its supporting function.

[0029] To facilitate the installation of the support components, the support rod 11 and the portion of the support base 9 near the inner wall of the high-voltage switch housing 1 cooperate to form a channel space 19. This allows the operator to travel along the central axis of the high-voltage switch housing 1 through the channel space and the support components to reach the side of the mounting ring 6 facing away from the support components. Figure 10 As indicated by the middle arrow, this facilitates the installation of the support member on the mounting ring 6. Of course, the size of the passage space doesn't have to be so large; it only needs to be large enough for the operator's arm to pass through. During installation, the operator can extend their arm to the side of the mounting ring opposite the support member to install the support member. In this embodiment, two support rods 11 are provided, spaced apart along the length of the support crossbar 12. The distance between them can be set to allow the operator's arm to pass through, forming an arm passage between the two support rods 11. Thus, when installing the support member, the operator's arm can reach the other side of the mounting ring 6 through the arm passage to perform the installation operation.

[0030] Since the operator can perform the installation operation on the side of the mounting ring 6 facing away from the support member, the convenience of installing the support member on the mounting ring 6 is greatly improved. Based on this, multiple fixing holes 23 are provided in the mounting structure to improve the reliability of the support member's installation on the mounting ring 6 while ensuring convenient installation. In this embodiment, four fixing holes are provided in the mounting structure; in other embodiments, more than four fixing holes can be provided. Of course, while ensuring installation stability, the number of fixing holes can be less than four, such as two or three, or even just one.

[0031] In this embodiment, the high-voltage switch transport support device has two support units. During use, the two support units are arranged at intervals along the circumference of the mounting ring 6, specifically as follows: Figure 4 and Figure 8 The arrangement shown is one above the other. The opposing support units prevent the assembly consisting of resistor string 4, insulating rod 5, mounting ring 6, transition support 7, and shielding cover 8 from shaking within the housing 1. In other embodiments, more than two support units can be provided, such as three support units spaced circumferentially along the mounting ring. Alternatively, more than three support units in an appropriate number can be used. A single support unit can also be used; this type of high-voltage switchgear transport support device is suitable for transport applications with good road conditions.

Claims

1. A high-voltage switch transport support device, comprising a support unit, the support unit including a support member, one end of the support member being a support seat for supporting and cooperating with the inner wall of the high-voltage switch housing, and the other end being a mounting structure, characterized in that, The mounting structure has fixing holes or fixing posts. The support member is mounted on the mounting ring inside the high-voltage switch via the fixing holes and threaded fasteners that pass through mounting holes in the mounting ring and through clearance holes on the shielding cover aligned with the mounting holes. Alternatively, the support member is mounted on the mounting ring inside the high-voltage switch via fixing posts that are inserted into mounting holes in the mounting ring, pass through clearance holes on the shielding cover aligned with the mounting holes, and are fixed within the mounting holes. The support unit also includes a bushing. One end of the bushing is used to abut against the mounting ring of the high-voltage switch, and the other end is used to pass through a bushing through hole in the shielding cover and abut against the support member. The bushing has a length greater than the vertical distance between the side of the mounting ring facing the shielding cover and the outer surface of the shielding cover, so as to maintain a gap between the support member and the shielding cover mounted on the mounting ring.

2. The high-voltage switchgear transport support device according to claim 1, characterized in that, The liner has an outer diameter smaller than that of the liner through hole, so that the outer surface of the liner is spaced apart from the inner wall surface of the liner through hole.

3. The high-voltage switchgear transport support device according to claim 1 or 2, characterized in that, The support includes a support structure connected between the support base and the mounting structure. The side of the support base near the inner wall of the high-voltage switch housing forms a channel space with the support structure, so that the operator can pass through the support along the central axis of the high-voltage switch housing or the operator's arm can pass through the support along the central axis of the high-voltage switch housing.

4. The high-voltage switch transport support device according to claim 3, characterized in that, The support structure consists of two support rods connected between the support base and the mounting structure. At least one support rod and the support base form a passageway for the operator to pass through, and an arm passageway for the operator's arm to pass through is formed between two adjacent support rods.

5. The high-voltage switchgear transport support device according to claim 3, characterized in that, The mounting structure has multiple fixing holes or fixing posts.

6. The high-voltage switchgear transport support device according to claim 1 or 2, characterized in that, The support member includes a support rod connected between the support base and the mounting structure. One end of the support rod is detachably connected to the mounting structure, and the other end is threadedly connected to the support base, so that the height of the support member can be adjusted by changing the amount of thread engagement between the support rod and the support base.

7. The high-voltage switchgear transport support device according to claim 6, characterized in that, The mounting structure includes an L-shaped plate structure with a first folded edge and a second folded edge. A support rod mounting hole is provided on the first folded edge. The end of the support rod that mates with the first folded edge has an external thread. The support rod is mounted on the first folded edge by mates with a nut. The fixing hole is provided on the second folded edge.

8. The high-voltage switchgear transport support device according to claim 7, characterized in that, The fixing holes and support rod mounting holes are arranged in a staggered manner along the circumference of the high-voltage switch housing.

9. The high-voltage switch transport support device according to claim 1 or 2, characterized in that, The high-voltage switch transport support device includes at least two support units, each of which is distributed circumferentially along the installation ring of the high-voltage switch.

10. The high-voltage switchgear transport support device according to claim 1 or 2, characterized in that, The support base includes a support crossbar, which is used to be placed horizontally inside the high-voltage switch housing along a direction perpendicular to the central axis of the high-voltage switch. Both ends of the support crossbar are provided with buffer plates whose dimensions are larger than the support crossbar along the central axis of the high-voltage switch housing.

11. A high-voltage switch transport support device, comprising a support unit, the support unit including a support member, one end of the support member being a support seat for supporting and cooperating with the inner wall of the high-voltage switch housing, and the other end being a mounting structure, characterized in that, The mounting structure has fixing holes or fixing posts. The support member is mounted on the mounting ring inside the high-voltage switch via the fixing holes and threaded fasteners that pass through mounting holes in the mounting ring and through clearance holes on the shielding cover aligned with the mounting holes. Alternatively, the support member is mounted on the mounting ring inside the high-voltage switch via fixing posts that are inserted into mounting holes in the mounting ring, pass through clearance holes on the shielding cover aligned with the mounting holes, and are fixed within the mounting holes. The support unit also includes a cylindrical bushing fitted onto the threaded fasteners or fixing posts. One end of the bushing is used to abut against the mounting ring of the high-voltage switch, and the other end is used to pass through the clearance holes and abut against the support member. The bushing has a length greater than the vertical distance between the side of the mounting ring facing the shielding cover and the outer surface of the shielding cover, so as to maintain a gap between the support member and the shielding cover mounted on the mounting ring.

12. The high-voltage switchgear transport support device according to claim 11, characterized in that, The bushing has an outer diameter smaller than that of the clearance hole, so that the outer surface of the bushing is spaced apart from the inner wall surface of the clearance hole.

13. The high-voltage switchgear transport support device according to claim 11 or 12, characterized in that, The support includes a support structure connected between the support base and the mounting structure. The side of the support base near the inner wall of the high-voltage switch housing forms a channel space with the support structure, so that the operator can pass through the support along the central axis of the high-voltage switch housing or the operator's arm can pass through the support along the central axis of the high-voltage switch housing.

14. The high-voltage switchgear transport support device according to claim 13, characterized in that, The support structure consists of two support rods connected between the support base and the mounting structure. At least one support rod and the support base form a passageway for the operator to pass through, and an arm passageway for the operator's arm to pass through is formed between two adjacent support rods.

15. The high-voltage switchgear transport support device according to claim 13, characterized in that, The mounting structure has multiple fixing holes or fixing posts.

16. The high-voltage switchgear transport support device according to claim 11 or 12, characterized in that, The support member includes a support rod connected between the support base and the mounting structure. One end of the support rod is detachably connected to the mounting structure, and the other end is threadedly connected to the support base, so that the height of the support member can be adjusted by changing the amount of thread engagement between the support rod and the support base.

17. The high-voltage switchgear transport support device according to claim 16, characterized in that, The mounting structure includes an L-shaped plate structure with a first folded edge and a second folded edge. A support rod mounting hole is provided on the first folded edge. The end of the support rod that mates with the first folded edge has an external thread. The support rod is mounted on the first folded edge by mates with a nut. The fixing hole is provided on the second folded edge.

18. The high-voltage switchgear transport support device according to claim 17, characterized in that, The fixing holes and support rod mounting holes are arranged in a staggered manner along the circumference of the high-voltage switch housing.

19. The high-voltage switchgear transport support device according to claim 11 or 12, characterized in that, The high-voltage switch transport support device includes at least two support units, each of which is distributed circumferentially along the installation ring of the high-voltage switch.

20. The high-voltage switchgear transport support device according to claim 11 or 12, characterized in that, The support base includes a support crossbar, which is used to be placed horizontally inside the high-voltage switch housing along a direction perpendicular to the central axis of the high-voltage switch. Both ends of the support crossbar are provided with buffer plates whose dimensions are larger than the support crossbar along the central axis of the high-voltage switch housing.

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