High-voltage wall bushing
Technical field
The invention belongs to high voltage electrical apparatus technical field, be specifically related to a kind of high-voltage wall bushing.
Background technology
In high voltage electrical apparatus technical field, high-voltage wall bushing passes through wall with high voltage source exactly, is guided into outdoor or is guided into outdoorly by indoor by indoor, or passes through the device that shell wall carries out high voltage source guiding inside and outside high-voltage switch gear or the transformer.
Fig. 1 to Fig. 3 has shown a kind of traditional high-voltage wall bushing, and wherein Fig. 1 is a kind of perspective view of conventional high-tension wall bushing; Fig. 2 is that high-voltage wall bushing shown in Figure 1 is removing a kind of perspective view that increases after climbing insulating barrier; Fig. 3 is that shown in Figure 2 removing increases the decomposing schematic representation of climbing the high-voltage wall bushing behind the insulating barrier.See Fig. 1 to Fig. 3, traditional wall bushing comprises conducting rod (1), be around in conducting rod (1) middle part inner insulating layer (2), be arranged on the metal adpting flange (3) on inner insulating layer (2) outer wall and be set in inner insulating layer (2) and go up and be positioned at increasing of described adpting flange (3) two ends and climb external insulation layer (4), described increasing climbs external insulation layer (4) and is provided with to increase to climb full skirt (42) and increase and climbs ring (43).Traditional high-voltage wall bushing is in order to be fixed on the metal adpting flange on the inner insulating layer outer wall, need on the inner insulating layer outer wall, mill out external screw thread (2-1), also internal thread groove (3-1) to be set on metal adpting flange inwall, then the metal adpting flange being spirally connected is fixed on the inner insulating layer, then at the junction of inner insulating layer and metal adpting flange coated with conductive glue.This conventional high-tension sleeve pipe has following shortcoming: (1) is after milling out screw thread on the inner insulating layer outer wall, destroyed the mechanical structure of its outer wall, its mechanical strength and insulation property have been reduced, and owing to be provided with rough thread groove, as easy as rolling off a log generation corona also causes to draw and dodges discharge, damages bushing.(2) owing to need on the inner insulating layer outer wall, mill out screw thread, this operation needs to mill away earlier the groove of nearly half length on the inner insulating layer outer wall, and then on remaining inner insulating layer outer wall, mill out external screw thread, in this operation, need mill away the layer of more weight, cause serious waste, this operation wastes time and energy simultaneously, and machining accuracy and difficulty are higher, thereby have improved manufacturing cost.
Summary of the invention
The purpose of this invention is to provide a kind of processing and make all comparatively convenient and save resource, lower-cost high-voltage wall bushing.
The technical scheme that realizes the object of the invention is: a kind of high-voltage wall bushing, comprise conducting rod, be around in the conducting rod middle part inner insulating layer, be arranged on adpting flange on the inner insulating layer, be set on the inner insulating layer and be positioned at increasing of described adpting flange both sides and climb external insulation layer; Described adpting flange is adhesively fixed by adhesive and fixes on the described inner insulating layer outer wall.
In the technique scheme, described adpting flange comprises tubular body, and the outer wall of described tubular body is provided with the connecting plate of evagination; The inwall of described tubular body is provided with anti-slip tank.
In the technique scheme, described anti-slip tank comprises along the circumferential anti-slip tank of the circumferential setting of pipe dress inner body wall or the axial anti-slip tank that axially is provided with along tubular body.
In the technique scheme, the inwall of described tubular body is provided with suit district and retaining Jiao Qu; Described anti-slip tank is arranged in the retaining glue district, is provided with adhesive in the described anti-slip tank.
In the technique scheme, described anti-slip tank comprises along the circumferential anti-slip tank of the circumferential setting of pipe dress inner body wall and the axial anti-slip tank that axially is provided with along tubular body; Described axial anti-slip tank is arranged on the end away from described suit district of retaining Jiao Qu, and described circumferential anti-slip tank is arranged on an end in the approaching described suit district of retaining Jiao Qu.
In the technique scheme, an end of the described adpting flange of adjacency of described external insulation layer is set on the outer wall of adpting flange tubular body of adjacency.
In the technique scheme, the outer wall of described inner insulating layer is the circle that waits external diameter.
In the technique scheme, described inner insulating layer is provided with external screw thread or annular recess or annular boss in the gluing junction with described adpting flange.
In the technique scheme, the two side ends of described inner insulating layer is exposed at the two ends of described conducting rod, and the two ends of described conducting rod are provided with electric connection terminal; Described increasing climbs external insulation layer and is provided with to increase to climb full skirt or increase and climbs ring.
In the technique scheme, described inner insulating layer is the glass fiber reinforced epoxy resin insulating rod, and described external insulation layer is the silicon rubber insulation sheath.
The present invention has positive effect:
(1) among the present invention, the inwall of described adpting flange is fixed on the described inner insulating layer outer wall by adhesive means; Owing to directly adopt adhesive means that adpting flange is fixed on the inner insulating layer outer wall, no longer need on the inner insulating layer outer wall, mill out external screw thread, also promptly no longer need this operation of milling inner insulating layer outer wall, all drawbacks of conventional high-tension wall bushing have fundamentally been overcome, so the present invention has processing and makes all comparatively convenient and save resource, lower-cost advantage.
(2) among the present invention, described adpting flange comprises tubular body, and the outer wall of described tubular body is provided with the connecting plate of evagination; The inwall of described tubular body is provided with circumferential anti-slip tank and axial anti-slip tank.After gluing, described circumferential anti-slip tank prevents that effectively adpting flange is loosening in the axial direction under adhesive action, described axial anti-slip tank effectively avoids adpting flange upwards loosening in week, thereby prevent that effectively adpting flange is loosening on inner insulating layer, improve bond strength and the steadiness of the two.
(3) among the present invention, the inwall of described tubular body is provided with suit district and retaining Jiao Qu, during use, elder generation's gluing on the inner insulating layer outer wall, then tubular body is inserted on the inner insulating layer outer wall from its suit district, described retaining Jiao Qu is owing to be provided with anti-slip tank, and the one, the adhesive of can packing into, prevent that adhesive from flowing out before uncured, the 2nd, be used to increase gluing bond strength.
(4) among the present invention, the outer wall of described inner insulating layer is wait external diameter cylindrical, and this shape has all presses effect preferably, effectively prevents to produce in the use corona; The inner insulating layer of this shape is compared with traditional externally threaded inner insulating layer that is provided with, and compressive resistance can be from bringing up to more than 60,000 volts less than 40,000 volts.
(5) among the present invention, described inner insulating layer also can be provided with external screw thread or annular recess or annular boss in the gluing junction with described adpting flange, because when adopting the fixedly connected flange of adhesive means, though external screw thread of this part or annular recess or annular boss setting area, prevent to produce aspect the corona effects relatively poor, but compare with the conventional high-tension wall bushing, still have processing and make all comparatively convenient and save resource, lower-cost advantage.
Description of drawings
Fig. 1 is a kind of perspective view of conventional high-tension wall bushing;
Fig. 2 is that high-voltage wall bushing shown in Figure 1 is removing a kind of perspective view that increases after climbing insulating barrier;
Fig. 3 is that shown in Figure 2 removing increases the decomposing schematic representation of climbing the high-voltage wall bushing behind the insulating barrier;
Fig. 4 is a kind of perspective view of the present invention;
Fig. 5 is that high-voltage wall bushing shown in Figure 4 is removing a kind of perspective view that increases after climbing insulating barrier;
Fig. 6 is that shown in Figure 5 removing increases the decomposing schematic representation of climbing the high-voltage wall bushing behind the insulating barrier;
Fig. 7 is a kind of perspective view of adpting flange in the high-voltage wall bushing shown in Figure 4;
A kind of perspective view that Fig. 8 is an adpting flange shown in Figure 7 when another angle is observed;
Fig. 9 is the half sectional view of adpting flange shown in Figure 7.
Be labeled as shown in the accompanying drawing: conducting rod 1, inner insulating layer 2, inner insulating layer outer wall 21, adpting flange 3, tubular body 31, suit district 31A, retaining glue district 31B, connecting plate 32, anti-slip tank 33, circumferential anti-slip tank 331, axial anti-slip tank 332, tubular body outer wall 34, external insulation layer 4 increases and climbs full skirt 42, increases to climb ring 43, electric connection terminal 5, external screw thread 2-1, internal thread groove 3-1.
Embodiment
(embodiment 1)
Fig. 4 to Fig. 9 has shown a kind of embodiment of the present invention, and wherein, Fig. 4 is a kind of perspective view of the present invention; Fig. 5 is that high-voltage wall bushing shown in Figure 4 is removing a kind of perspective view that increases after climbing insulating barrier; Fig. 6 is that shown in Figure 5 removing increases the decomposing schematic representation of climbing the high-voltage wall bushing behind the insulating barrier; Fig. 7 is a kind of perspective view of adpting flange in the high-voltage wall bushing shown in Figure 4; A kind of perspective view that Fig. 8 is an adpting flange shown in Figure 7 when another angle is observed; Fig. 9 is the half sectional view of adpting flange shown in Figure 7.
Present embodiment is a kind of high-voltage wall bushing, see Fig. 4 to Fig. 6, comprise conducting rod 1, be around in conducting rod 1 middle part inner insulating layer 2, be arranged on inner insulating layer 2 middle parts adpting flange 3, be set on the inner insulating layer 2 and be positioned at increasing of described adpting flange 3 both sides and climb external insulation layer 4; Described adpting flange 3 is adhesively fixed by adhesive and fixes on the described inner insulating layer outer wall 21.Described adpting flange 3 is that metal is made, and present embodiment is made with steel; Described inner insulating layer 2 is glass fiber reinforced epoxy resin insulating rods, and described external insulation layer 4 is silicon rubber insulation sheaths.The outer wall 21 of described inner insulating layer 2 is the circles that wait external diameter.
The two ends of described inner insulating layer 2 are exposed at the two ends of described conducting rod 1, and the two ends of described conducting rod 1 are provided with electric connection terminal 5; Described increasing climbs external insulation layer 4 and is provided with to increase to climb full skirt 42 and increase and climbs ring 43.
See Fig. 7 to Fig. 9, described adpting flange 3 comprises tubular body 31, and the outer wall 34 of described tubular body 31 is provided with the connecting plate 32 of evagination; The inwall of described tubular body 31 is provided with anti-slip tank 33.
See Fig. 1, an end of the described adpting flange 3 of the adjacency of described external insulation layer 4 is set on the outer wall 34 of adpting flange 3 tubular bodies 31 ends of adjacency.This structure effectively improves whole compressive resistance and security performance.
See Fig. 7 to Fig. 9, the inwall of described tubular body 31 is provided with suit district 31A and retaining glue district 31B; Described anti-slip tank 33 is arranged among the retaining glue district 31B, is provided with adhesive in the described anti-slip tank 33.
Described anti-slip tank 33 comprises along the circumferential anti-slip tank 331 of the circumferential setting of pipe dress body 31 inwalls and the axial anti-slip tank 332 that axially is provided with along tubular body 31.Described axial anti-slip tank 332 is arranged on the end away from described suit district 31A of retaining glue district 31B, and described circumferential anti-slip tank 331 is arranged on the end of the approaching described suit district 31A of retaining glue district 31B.
Present embodiment has positive effect:
(1) in the present embodiment, the inwall of described adpting flange is fixed on the described inner insulating layer outer wall by adhesive means; Owing to directly adopt adhesive means that adpting flange is fixed on the inner insulating layer outer wall, no longer need on the inner insulating layer outer wall, mill out external screw thread, also promptly no longer need this operation of milling inner insulating layer outer wall, all drawbacks of conventional high-tension wall bushing have fundamentally been overcome, so the present invention has processing and makes all comparatively convenient and save resource, lower-cost advantage.
(2) in the present embodiment, described adpting flange comprises tubular body, and the outer wall of described tubular body is provided with the connecting plate of evagination; The inwall of described tubular body is provided with circumferential anti-slip tank and axial anti-slip tank.After gluing, described circumferential anti-slip tank prevents that effectively adpting flange is loosening in the axial direction under adhesive action, described axial anti-slip tank effectively avoids adpting flange upwards loosening in week, thereby prevent that effectively adpting flange is loosening on inner insulating layer, improve bond strength and the steadiness of the two.
(3) in the present embodiment, the inwall of described tubular body 31 is provided with suit district 31A and retaining Jiao Qu, during use, elder generation's gluing on the inner insulating layer outer wall, then tubular body is inserted on the inner insulating layer outer wall from its suit district, described retaining Jiao Qu is owing to be provided with anti-slip tank, and the one, the adhesive of can packing into, prevent that adhesive from flowing out before uncured, the 2nd, be used to increase gluing bond strength.
(4) in the present embodiment, the outer wall of described inner insulating layer is wait external diameter cylindrical, and this shape has all presses effect preferably, effectively prevents to produce in the use corona; The inner insulating layer of this shape is compared with traditional externally threaded inner insulating layer that is provided with, and compressive resistance can be from bringing up to more than 60,000 volts less than 40,000 volts.
(embodiment 2)
Present embodiment is substantially the same manner as Example 1, and difference is: described inner insulating layer 2 with described adpting flange 3) gluing junction be provided with external screw thread.
(embodiment 3)
Present embodiment is substantially the same manner as Example 1, and difference is: described inner insulating layer 2 is provided with annular recess in the gluing junction with described adpting flange 3.
(embodiment 4)
Present embodiment is substantially the same manner as Example 1, and difference is: described inner insulating layer 2 is provided with annular boss in the gluing junction with described adpting flange 3.
In the foregoing description 2 to embodiment 4, described inner insulating layer also can be provided with external screw thread or annular recess or annular boss in the gluing junction with described adpting flange, because when adopting the fixedly connected flange of adhesive means, though external screw thread of this part or annular recess or annular boss setting area, prevent to produce aspect the corona effects relatively poor, but compare with the conventional high-tension wall bushing, still have processing and make all comparatively convenient and save resource, lower-cost advantage.
(embodiment 5)
Present embodiment is substantially the same manner as Example 1, and difference is: the anti-slip tank 33 on the inwall of described tubular body 31 only is circumferential anti-slip tank 331, and axial anti-slip tank 332 no longer is set, and specifically is a plurality of annular recess.
(embodiment 6)
Present embodiment is substantially the same manner as Example 1, and difference is: the anti-slip tank 33 on the inwall of described tubular body 31 only is axial anti-slip tank 332, and circumferential anti-slip tank 331 no longer is set, and specifically is the groove of a plurality of axial settings.
(embodiment 7)
Present embodiment is substantially the same manner as Example 1, and difference is: the anti-slip tank 33 on the inwall of described tubular body 31 is internal thread grooves.
Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all execution modes.And these belong to conspicuous variation or the change that connotation of the present invention extends out and still belong to protection scope of the present invention.