CN104143705A - Tubular bus-bar corona ball and tubular bus-bar end sealing structure with the same - Google Patents

Abstract

The invention discloses a pipe bus end sealing ball and a pipe bus end sealing structure using the end sealing ball. The shielding ball is a hollow spherical shell, and the end face of the end cap is coaxially attached to the bottom surface of the shielding ball, and is detachably connected to the shielding ball by fasteners. When in use, because the hollow structure of the shielding ball can reduce the weight of the object while ensuring the overall volume, so that the shielding ball in the blocked ball of the present invention maintains a relatively light weight while maintaining a large volume, And the reliability and stability of the fixed connection and electrical connection between the shielding ball and the end cap are guaranteed by the fastener, so that the end cap of the present invention reduces its own weight while maintaining a normal shielding effect.

Description

Tube bus bar end ball and tube bus bar end capping structure using the end ball

technical field

The invention relates to the technical field of pipe bus end sealing, and also relates to a pipe bus end sealing ball used in the pipe bus end sealing structure.

Background technique

At present, the commercially available tube busbar end-blocking balls are generally castings made of aluminum alloy with a smaller ball diameter, so that the end cap and shielding ball connected to the end of the tube busbar are cast into an integral structure, but due to the In this structure, the ball diameter of the shielding ball is adapted to the pipe diameter of the pipe bus. Therefore, as the voltage transmitted on the pipe bus in the power industry is getting higher and higher, the corresponding pipe diameter of the pipe bus is also increasing. The larger the size, the diameter of the appropriate shielding ball will also increase accordingly, thereby increasing the volume and weight of the entire end-blocking ball, which brings great inconvenience to the installation of the end-blocking ball on the end of the pipe busbar.

Contents of the invention

The object of the present invention is to provide a pipe bus bar end ball with small weight.

In order to achieve the above object, the technical scheme of the pipe bus end-capping ball of the present invention is as follows:

A tube bus bar end-sealing ball, including an end cap fixed on the end face of a tube bus bar and a shielding ball fixed on the end cap, the shielding ball is a hollow spherical shell, and the end face of the end cap is The shaft is attached to the bottom surface of the shielding ball, and is detachably connected with the shielding ball through fasteners.

The bottom surface of the shielding ball is provided with a perforation at its central position, and a pressing plate is installed in the shielding ball to stop above the edge of the perforation hole, and the two ends of the fastener are respectively fixed on the The end cap, the pressing plate, and the middle part pass through the perforation.

The pressure plate includes two semi-annular half-ring plate bodies that are oppositely butted. The outer side of the half-ring plate body is blocked above the perforated hole, and the inner side is on the inner side of the perforation. The upper end of the fastener is fixed on the half-ring plate body. The inner side of the ring plate.

The bottom surface of the end cap is protrudingly provided with an annular connecting edge at the edge position, the connecting edge is arranged coaxially with the end cap, and a threaded hole extending in the radial direction of the end cap is provided on the connecting edge. The hole is a counterbore for an outer countersunk head.

The surface of the shielding ball is a crown surface larger than a hemisphere, and a groove at the position of the hemisphere is arranged on the surface of the shielding ball.

The technical scheme of the pipe bus end sealing structure of the present invention is as follows:

A pipe busbar end sealing structure, comprising a tubular end of the pipe busbar and an end-sealing ball fixed on the tubular end. The shielding ball is connected to the shielding ball, the shielding ball is a hollow spherical shell, and the end face of the end cap is coaxially attached to the bottom surface of the shielding ball, and is detachably connected to the shielding ball by fasteners.

The bottom surface of the shielding ball is provided with a perforation at its central position, and a pressing plate is installed in the shielding ball to stop above the edge of the perforation hole, and the two ends of the fastener are respectively fixed on the The end cap, the pressing plate, and the middle part pass through the perforation.

The pressure plate includes two semi-annular half-ring plate bodies that are oppositely butted. The outer side of the half-ring plate body is blocked above the perforated hole, and the inner side is on the inner side of the perforation. The upper end of the fastener is fixed on the half-ring plate body. The inner side of the ring plate.

The bottom surface of the end cap is protrudingly provided with an annular connecting edge at the edge position, the connecting edge is arranged coaxially with the end cap, and a threaded hole extending in the radial direction of the end cap is provided on the connecting edge. The hole is a countersunk hole of an outer countersunk head, and a countersunk screw extending inward is screwed in the threaded hole, and the end cap is blocked and fixed on the tubular end by the countersunk screw.

The surface of the shielding ball is a crown surface larger than a hemisphere, and a groove at the position of the hemisphere is arranged on the surface of the shielding ball.

In the present invention, the shielding ball is a shell of a hollow spherical crown, and the end cap is fixedly connected to the bottom surface of the shielding ball through fasteners, and is electrically connected with the shielding ball through the fasteners. When in use, due to the hollowness of the shielding ball The structure can reduce the weight of the object while ensuring the overall volume, so that the shielding ball in the end-blocking ball of the present invention maintains a relatively light weight while maintaining a large volume, and the shielding ball is secured by fasteners. The reliability and stability of the fixed connection and electrical connection with the end cap make the end cap ball of the present invention reduce its own weight while maintaining a normal shielding effect.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the present invention;

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

Fig. 3 is A direction view among Fig. 1;

Fig. 4 is a partial enlarged view of place B in Fig. 1;

Fig. 5 is a partial enlarged view of point C in Fig. 1 .

Detailed ways

The embodiment of the capping ball of the present invention: as shown in Fig. 1 to Fig. 5, the capping ball is mainly composed of two parts: a shielding ball 1 and a capping cap 2, wherein the shielding ball 1 is formed by spinning an aluminum alloy plate The thin-walled shell of the hollow spherical crown, the end cap 2 consists of a disc-shaped cover body 21, a tubular connection edge 22 protruding from the edge of the cover body 21, and the cover body 21 between the connection edge 22 and the axis. Convex fixed table 23 constitutes. On the outer bottom surface of the shielding ball 1, there is a perforation through the inner and outer sides of the shielding ball. On the wall of the perforated hole, an annular mounting edge 24 in the shape of an axial flat plate is protruded. 21 Stop fit, the upper side stop is equipped with a pressure plate 3, the pressure plate 3 is formed by buckle-connecting two semi-circular half-ring plates, and the two ring plates have a stop fit on the inner end of the installation edge 24 The stopper part and the overhang part overhanging the inner end opening of the installation edge 24, the overhang part of the annular plate is fixed on the cover body 21 of the end cap 2 by fastening screws, so that the installation edge 24 Clamped between the pressure plate 3 and the cover body 21 of the end cap 2 , so that the end cap 2 is fixed on the shielding ball 1 by fastening screws 4 .

On the outer surface of the shielding ball 1, there is a circle of grooves 24 sunken to the inside of the shielding ball 1 at the position of the big circle parallel to the small circle where the end cap 2 is set, and each groove 24 is evenly distributed on the circumference of the big circle . On the connection edge 22 of the end cap 2, there is a circle of evenly distributed connecting threaded holes radially radially. The connecting threaded holes are countersunk holes of the outer countersunk head. The screw 5, the set screw 5 is a countersunk screw whose head sinks into the connecting threaded hole. U-shaped bolts 6 are installed on the fixing table 23 of the end cap 2 . An assembly hole 25 communicating with the through hole is opened on the cover body 21 of the end-sealing cover 2 .

The shielding ball 1 in the end-blocking ball of this embodiment is processed by spinning. Compared with the shielding ball 1 cast in the prior art, the shrinkage, porosity, trachoma, and slag that occur in the shielding ball 1 during processing are avoided. Eyes, flashes and other defects improve the structural stability of the shielding ball 1; U-shaped bolts 6 can fix the damping line in the busbar on the fixed platform 23, thereby achieving the effect of suppressing the vibration of the busbar; the pressure plate 3 is made of It is composed of two half-ring plates, so that the pressure plate 3 can be conveniently inserted into the shielding ball 1 from the perforation, thereby simplifying the fixed connection structure between the end cap 2 and the shielding ball 1, and improving the connection between the two. The reliability of the fixed connection; the assembly hole 25 opened on the cover body 21 of the end cap 2 can allow the operator's arm to pass through, so as to position the pressure plate 3 in the shielding ball 1, and facilitate the end cap 2 and the shielding The ball 1 is assembled; the head of the set screw 5 is submerged in the connection threaded hole on the connection edge 22 of the end cap 2, so that after the end cap is connected to the end of the pipe busbar, there is no metal protrusion on its outer surface, The corona caused by local protrusions is avoided, and the anti-corona effect and safety factor are improved; the groove 24 on the outer surface of the shielding ball 1 can block the water column formed by rainwater on it, and improve the shielding effect.

In the above-mentioned embodiment, the pressure plate is formed by butt-connecting two semicircular half-ring plate bodies, and the fastening screws pass through the perforations and are fixedly connected to the overhanging parts of the half-ring plate bodies. In other embodiments , the pressing plate can also be a thin steel sheet, which is loaded into the shielding ball by utilizing the elasticity of the steel sheet itself when in use; or the pressing plate can also be composed of at least two semicircular metal plates.

In the above embodiments, the shielding ball is processed by spinning. In other embodiments, the shielding ball can also be processed by machining, or by casting. It is only necessary to keep the inner hollow of the shielding ball. .

In the above embodiment, the fastening screw installed on the end cap is fixed on the shielding ball through the pressure plate. In other embodiments, the fastening screw can also be directly screwed on the shielding ball.

In the above embodiments, the end cap is fixed on the shielding ball by fastening screws. In other embodiments, the fastening screws can also be replaced by common fasteners such as fastening bolts and fastening rivets.

Claims (10)

1. manage bus end-blocking ball for one kind, it is characterized in that, comprise that the end-blocking lid and the end-blocking that for shutoff, are fixed on pipe bus end face cover the shielding ball being connected, shielding ball is the crown housing of hollow ball, and the end face of end-blocking lid is coaxially sticked on the bottom surface of shielding ball and ball is removable is connected by securing member and shielding.

2. pipe bus end-blocking ball according to claim 1, it is characterized in that, on the bottom surface of described shielding ball, offer the perforation in its center position, and in shielding ball, being equiped with in block the pressing plate above edge, described perforation hole, the two ends of described securing member are connected in respectively on end-blocking lid and pressing plate, middle part is passed in described perforation.

3. pipe bus end-blocking ball according to claim 2, it is characterized in that, described pressing plate comprises the semi-ring plate body of two semi-annular shapes of relative docking, the outside block of semi-ring plate body perforation hole along above, inner side in perforation inner side, the upper end of described securing member is connected in the inner side of semi-ring plate body.

4. according to the pipe bus end-blocking ball described in claim 1 or 2 or 3, it is characterized in that, the position, Shang Yu edge, bottom surface of described end-blocking lid convexes with annular connection edge, connect along covering coaxial setting with end-blocking, on connection edge, offer the screwed hole radially extending along end cap, described screwed hole is the counter sink of outside countersunk head.

5. according to the pipe bus end-blocking ball described in claim 1 or 2 or 3, it is characterized in that, the surface of described shielding ball is the spherical crown surface that is greater than hemisphere, on the surface of shielding ball, is provided with the groove in hemisphere position.

6. manage bus closed-end structure for one kind, comprise and manage fixing end-blocking ball in the tubulated ends of bus and tubulated ends, it is characterized in that, described end-blocking bag is drawn together end-blocking lid and the end-blocking that shutoff is fixed on pipe bus end face and is covered the shielding ball being connected, shielding ball is the crown housing of hollow ball, and the end face of end-blocking lid is coaxially sticked on the bottom surface of shielding ball and ball is removable is connected by securing member and shielding.

7. pipe bus closed-end structure according to claim 6, it is characterized in that, on the bottom surface of described shielding ball, offer the perforation in its center position, and in shielding ball, being equiped with in block the pressing plate above edge, described perforation hole, the two ends of described securing member are connected in respectively on end-blocking lid and pressing plate, middle part is passed in described perforation.

8. pipe bus closed-end structure according to claim 7, it is characterized in that, described pressing plate comprises the semi-ring plate body of two semi-annular shapes of relative docking, the outside block of semi-ring plate body perforation hole along above, inner side in perforation inner side, the upper end of described securing member is connected in the inner side of semi-ring plate body.

9. according to the pipe bus closed-end structure described in claim 6 or 7 or 8, it is characterized in that, the position, Shang Yu edge, bottom surface of described end-blocking lid convexes with annular connection edge, connect along covering coaxial setting with end-blocking, on connection edge, offer the screwed hole radially extending along end cap, described screwed hole is the counter sink of outside countersunk head, is installed with the sunk screw extending internally in screwed hole, and described end-blocking lid is connected in described tubulated ends by sunk screw shutoff.

10. according to the pipe bus closed-end structure described in claim 6 or 7 or 8, it is characterized in that, the surface of described shielding ball is the spherical crown surface that is greater than hemisphere, on the surface of shielding ball, is provided with the groove in hemisphere position.