CN104466845B - A kind of bus connection gold utensil - Google Patents

Abstract

The invention relates to a bus connection fitting, which includes a shielding ball and a connecting piece located in the middle of the shielding ball. The connecting piece is provided with a horizontal adapter and a vertical adapter. The upper end of the connecting piece is provided with a support frame assembly. It includes a support frame and at least two connecting arms arranged at intervals along the circumferential direction of the support frame, the upper end of the connecting arm is fixed on the support frame, and the lower end of the connecting arm is fixed at the joint of the upper and lower hemispheres of the shielding ball, The support frame has a mounting end located above the connecting arm for fixed connection with the corresponding suspension insulator, and the lower end of the support frame is fixed on the upper end of the connecting piece. A bus connection fitting of the present invention enables the shielding ball to be fixed on the support frame through the connecting arm, and then suspended on the suspension insulator through the support frame, which solves the problem that it is difficult to install the shielding ball when working at heights, and has a compact structure , which is beneficial to reduce the weight of the busbar connection fittings.

Description

A bus connection fitting

technical field

The invention relates to electric power fittings, in particular to a bus bar connecting fitting.

Background technique

The valve hall of the converter station is a closed space. Since the valve hall is equipped with important equipment such as valve towers, bushings, and voltage transformers, the conversion of AC and DC is also carried out in the valve hall. Especially when working at high altitudes, due to the shielding ball The installation is difficult, resulting in the phenomenon of corona and radio interference often occurring between the horizontal busbar and the vertical busbar in the valve hall of the converter station due to the lack of shielding devices.

Contents of the invention

The purpose of the present invention is to provide a busbar connection fitting to solve the technical problem of corona and radio interference between the horizontal busbar and the vertical busbar due to the lack of shielding devices during high-altitude operations.

In order to achieve the above object, the present invention adopts the following technical solution: a bus connection fitting, including a shielding ball and a connecting piece located in the middle of the shielding ball, the connecting piece is provided with a horizontal adapter whose length extends along the left and right directions and whose length extends along the up and down direction Extended vertical adapter, the upper end of the connector is provided with a support frame assembly, the support frame assembly includes a support frame and at least two connecting arms arranged at intervals along the circumference of the support frame, the upper end of the connecting arm is fixed on the On the support frame, the lower end of the connecting arm is fixed at the joint of the upper and lower hemispheres of the shielding ball, and the support frame has a mounting end located above the connecting arm for fixed connection with the corresponding suspension insulator, The lower end of the support frame is fixed on the upper end of the connecting piece.

The busbar connection fittings also include busbar fittings and busbars. The busbar fittings include front and rear fittings seats. The front side of the rear fittings seat is provided with a rear fitting groove, and the rear side of the front fittings seat is provided with a front fitting fitting. slot, the front and/or rear fitting slots are provided with at least two clamping protrusions arranged at intervals along the length direction of the corresponding wearing slots, and the clamping protrusions have The outer peripheral surface is in contact with the arc-shaped clamping surface; the gap between the adjacent clamping protrusions forms a limiting groove, and the outer peripheral surface of the bus bar is also provided with a spacer for inserting into the corresponding limiting groove and aligning with the limiting groove. The slot stops and cooperates to limit the axial movement of the bus bar.

The joint of the upper hemisphere of the shielding ball is provided with lifting lugs corresponding to the connecting arms one by one, and the lower end of the connecting arm is fixedly connected with the corresponding lifting lugs by bolts to realize the fixing of the connecting arm on the shielding ball. The junction of the upper and lower hemispheres.

The connecting arm includes a horizontal support section and an inclined connection section, the head end of the horizontal support section is fixed on the support frame, and the end of the horizontal support section extends in the direction away from the transverse mounting plate in the horizontal direction and is in line with the The first ends of the inclined connecting sections are connected, and the ends of the inclined connecting sections extend obliquely downward away from the support frame and are fixed at the junction of the upper and lower hemispheres of the shielding ball.

The support frame includes a support screw and a mounting seat fixed on the upper end of the support screw. The outer peripheral surface of the mounting seat is fixedly fitted with a transverse mounting plate. The upper end of the connecting arm is fixed on the transverse mounting plate. The upper end of the transverse mounting plate is provided with a U-shaped mounting ear, and the U-shaped mounting ear forms the mounting end.

The connecting piece includes a universal joint structure, the universal joint structure includes upper and lower hanging ears, the horizontal adapter is hinged on the upper hanging ear, and the vertical adapter is hinged on the lower hanging ear Above, the lower end of the vertical adapter is installed with a radial joint bearing, and the end of the busbar fitting away from the busbar is provided with a mounting hole for accommodating the radial joint bearing.

A bus bar fitting of the present invention includes a shielding ball and a connecting piece located in the middle of the shielding ball. The connecting piece is provided with a horizontal adapter whose length extends in the left and right directions and a vertical adapter whose length extends in the up and down direction. The fittings form the installation positions for the busbar fittings of the horizontal busbars, and the vertical adapters form the installation positions for the busbar fittings of the vertical busbars. The upper end of the above-mentioned connector is provided with a support frame assembly, the support frame assembly includes a support frame and a connecting arm, the support frame has an installation end located above the connecting arm for fixed connection with the corresponding suspension insulator, and the upper end of the connecting arm is fixed. On the supporting frame, the lower end of the connecting arm is fixed at the joint of the upper and lower hemispheres of the shielding ball. This setting enables the shielding ball to be fixed on the supporting frame through the connecting arm, and then suspended on the suspension insulator through the supporting frame. , which solves the problem that it is difficult to install shielding balls when working at heights, and does not require additional parts. Only the lower end and the installation end of the support frame assembly can provide busbar fittings for vertical busbars, busbar fittings for horizontal busbars, and suspension insulators. The corresponding installation position is provided, and the structure is compact, which is conducive to reducing the weight of the busbar connecting hardware. Furthermore, the connecting piece is located in the middle of the shielding ball, and the support frame assembly is located at the upper end of the connecting piece, which ensures that the center of gravity of the connecting piece is as close as possible At the same time as the ball center of the shielding ball, the distance between the suspension insulator, the busbar fittings of the vertical busbar, and the busbar fittings of the horizontal busbar is also opened. On the one hand, it is beneficial to further improve the ability of the shielding ball to resist swinging. It also provides a larger installation space for the installation of the busbar fittings of the vertical busbar and the busbar fittings of the horizontal busbar, which is convenient for disassembly and assembly. In addition, the lower end of the connecting arm is fixed at the joint of the upper and lower hemispheres of the shielding ball. This setting also makes the connecting fulcrum distributed in the plane where the center of the shielding ball is located, which improves the stability of the shielding ball and can effectively Prevent the swing of the shielding ball.

Further, a busbar connection fitting of the present invention includes a busbar fitting and a busbar. The busbar fitting includes front and rear fittings seats, and the front and rear fittings seats are correspondingly provided with front and rear threading grooves, and the front threading groove and/or the rear The fitting groove is provided with at least two clamping projections arranged at intervals along the length direction of the corresponding fitting groove. The clamping projections have an arc-shaped clamping surface for contacting and fitting with the outer peripheral surface of the busbar. The gap between the holding protrusions forms a limit slot, and the outer peripheral surface of the bus bar is provided with a limit screw for inserting into the corresponding limit slot and cooperating with the limit slot to limit the axial movement of the bus bar , this setting makes the bus bar not only receive the friction force from the arc clamping surface to hinder the movement of the bus bar after the bus bar is clamped by the front and rear bus bar fittings, but also the limit screw on the outer peripheral surface of the bus bar is also subject to the corresponding limit The supporting force of the groove can effectively prevent the busbar from slipping out of the busbar fittings, making the connection between the busbar and the busbar fittings more secure. At the same time, this arrangement has a simple structure, which is beneficial to reduce processing and manufacturing costs, is easy to operate, has low technical requirements for operators, and is convenient for popularization and application. In addition, in actual use, due to the manufacturing error in the size of the busbar, there will be protrusions on the outer peripheral surface of the busbar after processing. For the busbar fittings in the reference document, when the busbar is tightly embraced by the above-mentioned busbar fittings, The protrusions on the outer peripheral surface of the busbar directly contact the piercing hole, while other parts of the busbar cannot contact the inner wall of the piercing hole. The effective contact area between the outer peripheral surface of the busbar and the inner wall of the piercing hole becomes smaller, which will cause installation After the completion, the requirements for the flow between the busbar and the busbar fittings cannot be met, but when the busbar fittings of the present invention are in use, the protrusions on the outer peripheral surface of the busbar can fall into the corresponding limiting grooves, so that the protrusions on the outer peripheral surface of the busbar can be removed. Other parts outside the busbar can be in contact with the busbar fittings, which increases the flow area between the busbar and the busbar fittings, and is also conducive to the busbar fittings fully clamping the busbar to prevent the axial movement of the busbar, and the outer peripheral surface of the busbar After the protrusion falls into the limiting groove, the bus bar is slightly bent here, which further improves the ability of the bus bar fittings to prevent the bus bar from moving back and forth.

Further, the connecting arm of the present invention includes a horizontal support section and an inclined connection section, the head end of the horizontal support section is fixed on the support frame, and the end of the horizontal support section extends in the direction away from the transverse mounting plate in the horizontal direction and is inclined to The head ends of the connecting sections are connected, and the end of the inclined connecting section extends obliquely downward and is fixed together with the corresponding lifting lug. The connecting arm of this arrangement places the installation structure of the connecting arm and the transverse mounting plate between the connecting arm and the shielding Above the connection fulcrum of the ball, the installation of the two does not interfere with each other, which is convenient for disassembly and assembly, and avoids potential safety hazards caused by collisions between parts under the action of external force. At the same time, the gap between the horizontal support section and the inclined connection section is convenient. Disassembly and assembly of the drainage line.

Description of drawings

Fig. 1 is a structural schematic diagram of the use state of an embodiment of the bus bar connection fitting of the present invention;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the top view of Fig. 1;

Fig. 4 is a schematic diagram of the installation structure of the support frame assembly, the universal joint structure and the horizontal and vertical adapters in Fig. 1;

Fig. 5 is a partial enlarged view at Y place in Fig. 1;

Fig. 6 is a partial enlarged view at X in Fig. 2;

FIG. 7 is a partially enlarged view at Z in FIG. 3 .

detailed description

The busbar connection fittings shown in Figure 1-3 include shielding ball 1, horizontal busbar, vertical busbar and connecting piece located in the middle of the shielding ball. The above-mentioned shielding ball 1 is mainly composed of a shell formed by connecting an upper hemisphere and a lower hemisphere, and four evenly distributed lifting lugs 5 are provided on the inner wall of the joint of the upper hemisphere of the shielding ball. The upper end of the above-mentioned connector is provided with a support frame assembly, the support frame assembly includes a support frame and four connecting arms uniformly distributed along the circumference of the support frame, the upper ends of the connecting arms are fixed on the support frame, and the lower ends of the connecting arms are connected to the corresponding The lifting lugs are fixed together, and the lower end of the above-mentioned support frame is fixed on the upper end of the connecting piece. In this embodiment, four evenly distributed connecting arms are taken as an example for illustration. Of course, in other embodiments, the number of the above-mentioned connecting arms can also be two, three or more than four, and multiple connecting arms It can be arranged at any interval, and the number of the above-mentioned lifting lugs is the same as the number of the connecting arms and corresponds to each other. Of course, in other embodiments, the lower ends of the above-mentioned connecting arms may also be directly welded on the inner wall of the upper hemisphere of the shielding ball and located at the junction of the upper and lower hemispheres.

The above-mentioned support frame has a mounting end located at the upper end of the above-mentioned connecting arm for fixed connection with the corresponding suspension insulator 14 .

As shown in Figure 4, in this embodiment, the above-mentioned support frame includes a support screw 10 and a mounting seat whose axis extends in the up and down direction, and the upper end of the support screw 10 passes through the lower end of the mounting seat and passes through the upper and lower sides of the mounting seat. The two nuts are fixedly installed on the lower end of the mounting seat, and the outer peripheral surface of the mounting seat is fixedly fitted with a horizontal mounting plate 11, and the end of the mounting seat above the horizontal mounting plate 11 is provided with a U-shaped mounting ear, and the U-shaped mounting ear forms above the mounting end.

As shown in Figures 4 and 7, the above-mentioned connecting arm 6 includes a horizontal support section and an inclined connection section. The horizontal direction of the installation plate extends and connects with the head end of the above-mentioned inclined connecting section. In order to improve the anti-swing capability of the shielding ball, in this embodiment, the end of the above-mentioned horizontal support section contacts and fits with the inner wall of the above-mentioned shielding ball.

The end of the above-mentioned inclined connection section extends obliquely downward away from the support frame and is fixed together with the corresponding lifting lug 5 by bolts. Certainly, in other embodiments, the above-mentioned connecting arm is a straight plate structure, and a plurality of connecting arms are arranged obliquely and arranged at intervals along the circumferential direction of the transverse mounting plate, and the upper end of each connecting arm is welded to the transverse mounting plate.

As shown in Figures 1 and 6, the above-mentioned busbar connection fittings also include horizontal busbar fittings and vertical busbar fittings 2. The above-mentioned vertical busbar fittings include front and rear fittings, and rear fittings are provided on the front side of the rear fittings. Wearing groove, the front fitting groove is provided on the rear side of the front fittings seat, the length of the front and rear fitting grooves extends along the up and down direction, and the front fitting groove is provided with a plurality of front clamping parts evenly distributed along the up and down direction. The rear mounting groove is provided with a plurality of rear clamping protrusions evenly distributed along the up and down direction, the front clamping protrusion has a front arc-shaped clamping surface, and the rear clamping protrusion has a rear arc-shaped clamping surface. Both the front and rear arc-shaped clamping surfaces are in contact with the outer peripheral surface of the above-mentioned vertical busbar. Of course, in other embodiments, the number of the above-mentioned front clamping protrusions or rear clamping protrusions may also be two or more. In other embodiments, a plurality of front clamping protrusions or rear clamping protrusions may also be arranged at random intervals along the up-down direction.

The space between the adjacent front clamping protrusions forms the front limiting groove, the space between the adjacent rear clamping protrusions forms the rear limiting groove, and the outer peripheral surface of the above-mentioned vertical generatrix is provided for inserting in the corresponding The limit screw is used to limit the axial movement of the vertical generatrix in the limit slot.

As shown in Figure 6, in this embodiment, the above-mentioned limit screw 15 passes through the vertical bus bar 3 along the radial direction of the above-mentioned vertical bus bar 3 and is fixed on the vertical bus bar 3 by a lock nut. It is convenient for production and processing, and convenient for disassembly and assembly, which is conducive to improving production efficiency. Of course, in other embodiments, the above-mentioned limiting screws can also be screw-mounted on the vertical busbar.

The above-mentioned connector is provided with a horizontal adapter whose length extends in the left-right direction and a vertical adapter whose length extends in the up-down direction. In this embodiment, as shown in Figure 4, the above-mentioned connector includes a universal joint structure, the universal joint structure includes the upper lug 17 and the lower lug 9, the lower end of the above-mentioned support screw 10 is screw inserted into the above-mentioned upper lug 17, and the nut and the upper lug are screwed on the support screw. 17 are fixedly installed together. Certainly, in other embodiments, the above-mentioned connecting member may also be a straight rod-shaped structure extending in the up-down direction.

The above-mentioned lower hanging ear 9 is hinged with a vertical adapter 8. The vertical adapter 8 includes a vertical adapter rod and a vertical hinge seat fixed on the upper end of the vertical adapter rod. The shape of the vertical hinge seat is It is U-shaped, and the two straight sections of the vertical hinged seat are hinged on the lower lug 9 through a pin shaft. The lower end of the vertical transfer rod is screwed with an adjusting screw 13, and the lower end of the adjusting screw 13 is provided with a centripetal joint bearing 7. As shown in Figure 5, the above-mentioned vertical bus bar fitting 2 is provided with a mounting hole for accommodating the centripetal joint bearing 7 on the end of the above-mentioned vertical bus bar fitting 2 away from the vertical bus bar 3, and the above-mentioned adjusting screw 13 passes through the centripetal joint bearing 7, the vertical To the upper end of the busbar fittings 2, the vertical busbar fittings are fixed on the adjusting screw rod 13 through the nut screwed on the lower end of the adjusting screw rod 13.

The above-mentioned upper hanging ear 17 is hinged with a transverse adapter 16, the transverse adapter 16 includes a transverse adapter rod and a transverse hinge seat fixed at the head end of the transverse adapter rod, the shape of the transverse hinge seat is U-shaped, and The two straight sections of the hinged seat are hinged on the upper lug 17 through a pin shaft, and the end of the transverse transfer rod is fixed with a connecting flange 12, which can be connected to the end of the transverse busbar fittings away from the transverse busbar through bolts. Disconnect.

The connector of the present invention adopts the universal joint structure, which not only ensures the installation and fixation of the horizontal busbar fittings and the vertical busbar fittings, but also ensures the flexibility of the installation directions of the two busbar fittings.

In order to reduce the weight of the above-mentioned busbar connection fittings and improve the mechanical strength, the above-mentioned support screw 10 is made of stainless steel, and the above-mentioned horizontal and vertical adapters and support frame components (except the support screw 10) are all made of aluminum alloy. become.

The upper hemisphere of the above-mentioned shielding ball is provided with a top opening for passing the above-mentioned suspension insulator, the above-mentioned lower hemisphere is provided with a bottom opening for passing the above-mentioned vertical busbar fittings, and the intersection of the two hemispheres is provided with a hole for passing through. Set the right side opening of the above-mentioned transverse busbar fittings.

The above-mentioned bus connection fittings also include a set of drain wires 4 for the overcurrent connection of the horizontal bus fittings and the vertical bus fittings 2, and the drain wires are aluminum stranded wires.

The above is a preferred embodiment of the present invention. In other embodiments, the above-mentioned vertical bus bar fittings can also only be provided with a rear clamping protrusion, and the rear clamping protrusion has a rear arc-shaped clamping surface, and the vertical bus bar is clamped on Between the front fitting groove and the rear clamping protrusion, the inner wall of the front fitting groove and the rear arc-shaped clamping surface are all in contact with the outer peripheral surface of the busbar. In other embodiments, the busbar fittings can only be provided with a front clamping raised.

In other embodiments, the above-mentioned support frame includes a support screw whose axis extends in the up-and-down direction, the upper end of the connecting arm is fixed on the upper end of the support screw by welding, and the upper end of the support screw is provided with an installation parallel to the axis of the support screw. The mounting plane is provided with radial bolt holes, the upper end of the supporting screw forms the above-mentioned installation end, and the lower end of the suspension insulator is fixed together with the upper end of the supporting screw through the bolts passing through the above-mentioned bolt holes. Those skilled in the art may also make equivalent replacements in different situations according to design common sense in this field, which are all within the protection scope of the present invention.

Claims (5)

1. A bus connection fitting, characterized in that: it includes a shielding ball and a connecting piece located in the middle of the shielding ball, the connecting piece is provided with a horizontal adapter whose length extends along the left and right directions and a vertical adapter whose length extends along the up and down direction The upper end of the connecting piece is provided with a support frame assembly, the support frame assembly includes a support frame and at least two connecting arms arranged at intervals along the circumference of the support frame, the upper end of the connecting arm is fixed on the support frame, connected The lower end of the arm is fixed at the joint of the upper and lower hemispheres of the shielding ball, the support frame has an installation end located above the connecting arm for fixed connection with the corresponding suspension insulator, and the lower end of the support frame is fixed On the upper end of the connector, the busbar connection fittings also include busbar fittings and busbars, the busbar fittings include front and rear fittings seats, the front side of the rear fittings seat is provided with a rear wearing groove, and the front fittings seat The rear side of the front is provided with a front wear groove, and the front wear groove and/or the rear wear groove are provided with at least two clamping protrusions arranged at intervals along the length direction of the corresponding wear groove, and the clamping protrusions It has an arc-shaped clamping surface for contacting and fitting with the outer peripheral surface of the corresponding bus bar; the gap between adjacent clamping protrusions forms a limiting groove, and the outer peripheral surface of the bus bar is also provided for inserting on the corresponding A limit screw that fits in the limit slot and cooperates with the limit slot to limit the axial movement of the bus bar. 2. A bus connection fitting according to claim 1, characterized in that: the joint of the upper hemisphere of the shielding ball is provided with lifting lugs corresponding to the connecting arm one by one, and the lower end of the connecting arm is connected to the connecting arm through a bolt. The fixed connection of the corresponding lifting lug realizes that the connecting arm is fixed at the joint of the upper and lower hemispheres of the shielding ball. 3. A bus connection fitting according to claim 1, characterized in that: the connecting arm comprises a horizontal support section and an inclined connection section, the head end of the horizontal support section is fixed on the support frame, and the horizontal support section The end of the supporting section extends in the direction away from the transverse mounting plate in the horizontal direction and connects with the head end of the inclined connecting section, and the end of the inclined connecting section extends obliquely downward away from the support frame and is fixed on the The joint of the upper and lower hemispheres of the shielding ball. 4. A bus connection fitting according to claim 1, characterized in that: the support frame includes a support screw and a mounting seat fixed on the upper end of the support screw, the outer peripheral surface of the mounting seat is fixedly fitted with a horizontal mounting plate, The upper end of the connecting arm is fixed on the transverse mounting plate, and the end of the mounting seat above the transverse mounting plate is provided with a U-shaped mounting ear, which forms the mounting end. 5. A bus connection fitting according to any one of claims 1-4, characterized in that: the connecting piece includes a universal joint structure, the universal joint structure includes upper and lower lugs, and the horizontal transfer The vertical adapter is hinged on the upper lug, the vertical adapter is hinged on the lower lug, the lower end of the vertical adapter is equipped with a radial joint bearing, and the bus bar hardware deviates from the An installation hole for accommodating the radial joint bearing is provided on the end of the busbar.