CN109801765B - Device and method for preventing deviation between conical capacitor core layers - Google Patents
Device and method for preventing deviation between conical capacitor core layers Download PDFInfo
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- CN109801765B CN109801765B CN201811596940.6A CN201811596940A CN109801765B CN 109801765 B CN109801765 B CN 109801765B CN 201811596940 A CN201811596940 A CN 201811596940A CN 109801765 B CN109801765 B CN 109801765B
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Abstract
The invention discloses an interlayer anti-shifting device for a conical capacitor core, which comprises at least two tightening rods, an upper cover plate, a lower supporting plate and a tightening plate, wherein the tightening rods are arranged in parallel, the tightening rods vertically penetrate through the lower supporting plate and the upper cover plate and clamp and fix the conical capacitor core between the lower supporting plate and the upper cover plate, the tightening plate is in a conical tube shape and is arranged on the lower supporting plate, and the inner surface of the tightening plate is smooth and is matched with the conical surface of the conical capacitor core. The invention also discloses a method for preventing the interlayer offset of the conical capacitor core, which adopts the interlayer offset prevention device of the conical capacitor core to clamp and fix the conical capacitor core between the upper cover plate and the lower supporting plate, and can simply and practically prevent the interlayer offset phenomenon of the capacitor core caused by the action of expansion and contraction or gravity of the conducting rod even under the condition of inaccurate control of the heating rate during drying.
Description
Technical Field
The invention relates to the field of power transmission insulation equipment, in particular to an anti-offset device and method between conical capacitor core layers of an oil-immersed transformer bushing.
Background
The capacitor core of oil-immersed transformer bushing is generally composed of conducting rod and main insulation, the main insulation is composed of corrugated cable paper and aluminum foil voltage-sharing electrode. For the transformer bushing, the drying quality of the capacitor core determines the dielectric loss of the product, so the capacitor core must be dried before assembly. In the drying process, the main insulation can be subjected to gravity or tensile stress to cause the interlayer offset of the capacitor core, or the interlayer offset of the capacitor core is caused by the thermal elongation of the conducting rod, especially under the condition that the drying temperature is not accurately controlled, namely the heating rate is not stable, the thermal elongation of the conducting rod is not stable, so that the deformation or damage of an aluminum foil electrode inside the insulation can be caused, and the whole electrical performance of the transformer bushing is influenced.
In order to solve the above problems, the prior art has solved the problem of interlayer offset caused by gravity or other external factors during the manufacturing process of the stepped capacitor core. However, the prior art cannot solve the problem of interlayer offset of the conical capacitor core with one flat end of the main insulation and one conical end of the main insulation, and the problem of interlayer offset of the capacitor core caused by the thermal extension of the conducting rod under the condition of inaccurate temperature control is not considered.
Disclosure of Invention
In view of the shortcomings of the prior art, an object of the present invention is to provide a tapered capacitor core interlayer deviation preventing device, which can simply and reliably prevent the deviation of the capacitor core interlayer caused by the expansion and contraction of heat or the gravity of the conductive rod even if the temperature rise rate is not accurately controlled during drying.
In order to achieve the purpose, the technical means adopted by the invention are as follows: the utility model provides a toper electric capacity core layer anti-migration device, including at least two mutual parallel arrangement's tightening rod, the upper cover plate, bottom plate and tightening plate, tightening rod passes bottom plate and upper cover plate perpendicularly, and fix toper electric capacity core card between bottom plate and upper cover plate, tightening plate sets up on the bottom plate, tightening plate is the toper tubulose, the internal surface of tightening plate is smooth and with the conical surface looks adaptation of toper electric capacity core, be equipped with the apron round hole on the upper cover plate, be equipped with the layer board round hole on the bottom plate, apron round hole and layer board round hole coaxial arrangement and supply the conducting rod to pass.
The anti-shifting device between the conical capacitor core layers can simply and practically prevent the conducting rod from shifting between the capacitor core layers due to the expansion and contraction effect of heat or the gravity effect because the conical capacitor core can be clamped and fixed between the upper cover plate and the lower supporting plate.
Preferably, the diameter of the cover plate round hole is equal to the diameter of the conducting rod, so that the upper cover plate can be attached to the leveling end of the conical capacitor core in the largest area, the leveling end is guaranteed to be uniformly pressed by the upper cover plate, and the phenomenon of interlayer offset caused by uneven pressing of the leveling end by the upper cover plate is prevented. The diameter of layer board round hole is greater than or is equal to the diameter of conducting rod, layer board round hole can hold the conducting rod at the minimum and pass can, along with the increase of layer board round hole diameter, when layer board round hole diameter is less than or equal to the external diameter of tightening up the less one end of board diameter, tighten up the less one end of board diameter and fix on the surface of layer board, fixed mode between the two can be for welding or gluing.
More preferably, when the diameter of the supporting plate round hole is larger than the outer diameter of the smaller end of the tightening plate, the smaller end of the tightening plate passes through the supporting plate round hole and is fixed on the inner wall of the supporting plate round hole, and the fixing mode between the supporting plate round hole and the tightening plate round hole can be welding or gluing; or the supporting plate round hole can also directly clamp the outer wall of the tightening plate to enable the tightening plate and the supporting plate to be fixedly connected, so that the purposes of simplifying the process and being convenient to disassemble can be achieved, the connecting structure of the supporting plate and the tightening plate is more stable, and the possibility of connection failure is reduced.
Preferably, the tightening plate comprises a fixed plate and a movable plate, the fixed plate is fixedly arranged on the lower supporting plate, the outer surface of the movable plate is attached to the inner surface of the fixed plate, and the movable plate is made of a hard material. The device has certain universality by changing the taper of the inner surface of the movable plate to match with tapered capacitor cores with different tapers, and the cost can be reduced compared with the replacement of an integral material by replacing the movable plate. The stationary plate is generally made of steel plate, but may be made of other metal materials, and the movable plate may be made of any hard material having a low compression deformation rate, such as hard rubber, hard plastic, or hard metal.
More preferably, a groove is arranged in the fixed plate, the movable plate is embedded in the groove, the thickness of the movable plate is larger than the depth of the groove, and an arc-shaped chamfer is arranged at the edge of the movable plate. The movable plate is optimized to be a separated type from an integral type, so that the cost can be saved, the use of materials can be reduced, the manufacturing of the movable plate can be simplified, and the process forming difficulty can be reduced; the arc chamfer angle is arranged on the edge of the movable plate, so that the phenomena of deformation, scratch or indentation and the like of the conical end of the capacitor core caused by the force application of the edge of the plate can be avoided.
Preferably, the upper cover plate is provided with a cover plate edge hole, the lower support plate is provided with a support plate edge hole, and the tightening rod penetrates through the cover plate edge hole and the support plate edge hole to be arranged on the periphery of the conical capacitor core in an enclosing manner. The upper cover plate and the lower supporting plate are arranged in parallel, each tightening rod vertically penetrates through one cover plate side hole and one supporting plate side hole respectively, so that the upper cover plate and the lower supporting plate are connected respectively, any one of the upper cover plate and the lower supporting plate and the tightening rod are detachably connected, the connection mode can be in modes of screwing, cloth belt winding and the like, the other one can adopt detachable connection or fixed connection, and the fixed connection mode is welding or gluing.
More preferably, set up screw thread and tighten up the nut on the tightening rod, the diameter in apron limit hole and the diameter in layer board limit hole all are greater than the diameter of tightening rod, are less than the external diameter of tightening up the nut. The tightening rod is fixedly connected with the upper cover plate and the lower supporting plate through threads and tightening nuts respectively, the connection mode is more stable, adjustment and disassembly are convenient, and the tightening rod is easily kept perpendicular to the upper cover plate and the lower supporting plate respectively.
Preferably, the device for preventing the conical capacitor core interlayer from shifting further comprises a fixing plate, and the fixing plate is vertically fixed at one end of at least two tightening rods. The setting of fixed plate can make whole device place perpendicularly in ground, improves the stability of device, improves operating personnel's security in the installation.
In view of the defects of the prior art, the second object of the present invention is to provide a method for preventing the interlayer offset of the tapered capacitor core, which can simply and reliably prevent the conductive rod from the interlayer offset of the tapered capacitor core caused by the expansion and contraction of heat or the gravity even if the control of the temperature rising rate is not accurate during drying.
In order to achieve the purpose, the technical means adopted by the invention are as follows: a method for preventing the interlayer offset of a tapered capacitor core adopts the interlayer offset prevention device of the tapered capacitor core, and comprises the following steps:
vertically and fixedly connecting the lower supporting plate with at least two tightening rods;
a conductive rod close to the conical end of the conical capacitor core penetrates through the circular hole of the supporting plate, so that the conical surface of the conical capacitor core is attached to the inner surface of the tightening plate;
a conductive rod at the flat end of the conical capacitor core penetrates through the circular hole of the cover plate, so that the upper cover plate is abutted against the end face of the flat end of the conical capacitor core;
and vertically fixing the upper cover plate and the tightening rod until the conical capacitor core is clamped between the upper cover plate and the lower supporting plate.
According to the method for preventing the interlayer offset of the tapered capacitor core, the tapered capacitor core can be clamped between the upper cover plate and the lower supporting plate by adopting the interlayer offset preventing device of the tapered capacitor core, and the phenomenon that the capacitor core is offset due to the expansion and contraction effect of heat or the gravity effect of the conducting rod can be simply and practically prevented.
Preferably, the tightening rod is vertically arranged, so that the vertical position relation between the tightening rod and the upper cover plate and the vertical position relation between the tightening rod and the lower supporting plate are conveniently calibrated, and the assembly of the anti-shifting device among the conical capacitor core layers is facilitated.
Drawings
FIG. 1 is a perspective view of a tapered capacitor core 11 according to a first embodiment of the present invention.
FIG. 2 is a schematic perspective view of a tapered capacitor core interlayer anti-shifting device according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a tapered capacitor core interlayer anti-shifting apparatus according to a second embodiment of the present invention;
fig. 4 is a schematic perspective view of tightening plate 25 according to the second embodiment of the present invention;
fig. 5 is a schematic perspective view of tightening plate 35 according to the third embodiment of the present invention;
FIG. 6 is a schematic perspective view of a tapered capacitor core interlayer anti-displacement device according to a third embodiment of the present invention;
fig. 7 is a sectional view of tightening plate 35 according to the third embodiment of the present invention;
fig. 8 is a perspective view of movable plate 352 according to a third embodiment of the present invention;
Detailed Description
As required, detailed embodiments of the present invention are disclosed herein. However, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed manner, including employing various features disclosed herein in combination with features that may not be explicitly disclosed herein.
The first embodiment is as follows:
as shown in fig. 1, the structure of the tapered capacitor core 11 includes a main insulation 111 and a conductive rod 112, the main insulation 111 is a voltage-sharing electrode formed by winding corrugated cable paper and aluminum foil, one end of the flat shape is a flat end 113, and one end of the conical shape is a tapered end 114.
As shown in fig. 2, the anti-shifting device for tapered capacitor core layers of the present embodiment includes four tightening rods 14, an upper cover plate 12, a lower support plate 13 and a tightening plate 15, which are arranged in parallel. In other embodiments, the number of tightening levers 14 is at least two, and may be 2, 3 or more. The tightening rod 14 vertically penetrates the lower plate 13 and the upper cover plate 12 and clamps the tapered condenser core 11 between the lower plate 13 and the upper cover plate 12.
The tightening plate 15 is arranged on the lower supporting plate 13, the tightening plate 15 is in a conical tubular shape, and the inner surface of the tightening plate 15 is smooth and is matched with the conical end 114 of the conical capacitor core 11. The taper of the inner surface of tightening plate 15 is exactly matched with the taper of tapered end 114 of tapered capacitor core 11, so that the inner wall of tightening plate 15 is completely attached to the outer tapered surface of tapered end 114, and no interlayer offset space exists under the tightened condition.
The upper cover plate 12 is provided with a cover plate circular hole 121, the lower support plate 13 is provided with a support plate circular hole 131, and the cover plate circular hole 121 and the support plate circular hole 131 are coaxially arranged and are used for the conductive rod 112 to pass through. It is understood that the positions of the cover plate circular hole 121 and the support plate circular hole 131 do not necessarily have to be at the central positions of the upper cover plate 12 and the lower support plate 13, as long as the two satisfy the condition of being coaxially disposed and allowing the conductive rod 112 to pass through. The planar shapes of the upper cover plate 12 and the lower support plate 13 are not limited to rectangle, and may be any shapes, such as circle, polygon and other irregular shapes, and the three-dimensional shape may be a plate shape with uniform thickness.
The diameter of the cover plate circular hole 121 is equal to the diameter of the conductive rod 112, so that the upper cover plate 12 can be attached to the flat end 113 of the tapered capacitor core 11 in the largest area, the flat end 113 is uniformly pressed by the upper cover plate 12, and the phenomenon of interlayer offset of the flat end 113 due to uneven pressure of the upper cover plate 12 is prevented.
The diameter of layer board round hole 131 is greater than or equal to the diameter of conducting rod 112, layer board round hole 131 can hold conducting rod 112 at the minimum and pass can, along with the increase of the diameter of layer board round hole 131, when the diameter of layer board round hole 131 is less than or equal to the external diameter of the less one end of tightening plate 15 diameter, the less one end of tightening plate 15 diameter is fixed on the surface of bottom plate 13, and the fixed connection mode between the two can be for welding or gluing. In this embodiment, the diameter of the supporting plate circular hole 131 is smaller than the smaller diameter end of the tightening plate 15, and the supporting plate circular hole and the tightening plate are fixed by welding.
The upper cover plate 12 is provided with a cover plate edge hole 122, the lower support plate 13 is provided with a support plate edge hole 132, and the tightening rod 14 passes through the cover plate edge hole 122 and the support plate edge hole 132 and is arranged around the periphery of the conical capacitor core 11. It can be understood that the plane of the upper cover plate 12 and the plane of the lower support plate 13 are parallel to each other, each tightening rod 14 vertically passes through a cover plate edge hole 122 and a support plate edge hole 132, and the tightening rod 14 is connected with the upper cover plate 12 through the cover plate edge hole 122 and is connected with the lower support plate 13 through the support plate edge hole 132. Any one of upper cover plate 12 and bottom plate 13 and tightening rod 14 can be dismantled and be connected, and the connected mode can be modes such as spiro union, strap winding, and another can adopt and dismantle connection or fixed connection, and the fixed connection mode is welding or gluing.
Specifically, in this embodiment, the two ends of the tightening rod 14 are respectively provided with the upper thread 141, the lower thread 142 and the tightening nut 143, the middle region is not provided with the threads, and the upper thread 142 and the lower thread 142 have a certain length, so that the tightening rod can be suitable for tapered capacitor cores 11 with different lengths; the diameter of the cover plate side hole 122 and the diameter of the support plate side hole 132 are both larger than the diameter of the tightening rod 14 and smaller than the outer diameter of the tightening nut 143. The upper cover plate 12 is fixedly connected with the tightening plate 14 through the upper threads 141 and the tightening nuts 143, and the lower support plate 13 is fixedly connected with the tightening plate 14 through the lower threads 142 and the tightening nuts 143, so that the connection mode is more stable, and the purpose that the tightening rod 14 respectively keeps vertical relation with the upper cover plate 12 and the lower support plate 13 is easier to achieve. In other embodiments, the outer surface of tightening rod 14 may be threaded throughout to facilitate use with tapered capacitor cores 11 of different lengths.
When the conical capacitor core 11 is dried, in order to prevent the conical capacitor core 11 from generating interlayer offset, the interlayer offset prevention device for the conical capacitor core is adopted, and the specific method steps are as follows:
s101: the lower supporting plate 13 is vertically and fixedly connected with four tightening rods 14;
s102: the conductive rod 112 close to the tapered end 114 of the tapered capacitor core 11 passes through the supporting plate circular hole 131, so that the outer tapered surface of the tapered end 114 of the tapered capacitor core 11 is attached to the inner surface of the tightening plate 15;
s103: the conducting rod 112 close to the flat end 113 of the conical capacitor core 11 passes through the cover plate circular hole 121, so that the upper cover plate 12 abuts against the end face of the flat end 113 of the conical capacitor core 11;
s104: the upper cover plate 12 and the tightening rod 14 are vertically fixed until the tapered condenser core 11 is clamped between the upper cover plate 12 and the lower support plate 13.
In the above step S101, the tightening nut 143 and the bottom plate 13 are first fitted to the lower thread 142 of the tightening rod 14, the bottom plate 13 is positioned on the tightening nut 143, and the position of the tightening nut 143 is adjusted so that the bottom plate 13 is perpendicular to the tightening rod 14.
In step S102, the end of tightening plate 15 with a smaller diameter is first fixed on the upper surface of lower supporting plate 13, and supporting plate circular hole 131 and tightening plate 15 are coaxially disposed, and the fixing manner of both can be gluing or welding.
In step S104, the upper cover 12 and the tightening rod 14 are fixed by nut tightening. By arranging a tightening nut 143 on the surface of the upper cover 12 not contacting the flat end 113, the position of the tightening nut 143 on the upper thread 141 is adjusted so that the upper cover 12 is perpendicular to the tightening rod 14, and the tapered condenser core 11 is clamped between the upper cover 12 and the lower plate 13.
The method for preventing the interlayer offset of the tapered capacitor cores can clamp and fix the tapered capacitor cores 11 between the upper cover plate 12 and the lower supporting plate 13 by adopting the interlayer offset preventing device of the tapered capacitor cores, the device can be placed at any angle and mode in the drying process, and the phenomenon that the conductive rods 112 cause the interlayer offset of the tapered capacitor cores 11 due to the expansion and contraction of heat or the action of gravity can be simply and practically prevented even under the condition of inaccurate control of the heating rate in the drying process.
Example two:
as shown in fig. 3 and 4, the interlayer anti-shifting device for tapered capacitor cores of the present embodiment includes four tightening rods 24, an upper cover plate 22, a lower support plate 23 and a tightening plate 25, which are arranged in parallel, wherein the tightening rods 24 vertically penetrate through the lower support plate 23 and the upper cover plate 22, and clamp the tapered capacitor cores 21 between the lower support plate 23 and the upper cover plate 22.
The tightening plate 25 is disposed on the lower support plate 23, the tightening plate 25 is in a tapered tubular shape, the tightening plate 25 includes a fixed plate 251 and a movable plate 252, the fixed plate 251 is fixedly disposed on the lower support plate 23, an outer surface of the movable plate 252 is attached to an inner surface of the fixed plate 251, and the movable plate 252 is made of a hard material. The device can be made versatile by replacing the movable plate 252 with a different taper on the inner surface to accommodate a tapered capacitor core 21 with a different taper, and the replacement of the movable plate 252 can reduce costs over the replacement of a unitary material. The stationary plate 251 is typically a steel plate, but may be made of other metal materials, and the movable plate 252 may be made of any hard material having a low compression deformation rate, such as hard rubber, hard plastic, or hard metal. The inner surface of the movable plate 252 is smooth and conforms to the outer conical surface of the tapered end of the tapered condenser core 21. The taper of the inner surface of the movable plate 252 is exactly matched with the taper of the tapered end of the tapered capacitor core 21, so that the inner wall of the movable plate 252 is completely attached to the tapered end, and no interlayer offset space exists under the tightened condition.
The upper cover plate 22 is provided with a cover plate round hole 221, the lower support plate 23 is provided with a support plate round hole 231, and the cover plate round hole 221 and the support plate round hole 231 are coaxially arranged and are used for the conductive rod to pass through. The diameter of the cover plate circular hole 221 is equal to the diameter of the conductive rod. The diameter of layer board round hole 231 is greater than the diameter of conducting rod, layer board round hole 231 diameter is greater than the external diameter of the less one end of diameter of tightening plate 25, layer board round hole 231 is passed to the less one end of tightening plate 25 diameter, fix on the inner wall of layer board round hole 231, fixed mode between the two can be for welding or gluing, layer board round hole 231 also can directly block the outer wall of tightening plate 25, make the two produce fixed connection, can reach the simplified process, dismantle convenient purpose, and the two structure is more stable, reduce the possibility of connecting the inefficacy.
The upper cover plate 22 is provided with a cover plate edge hole 222, the lower support plate 23 is provided with a support plate edge hole 232, and the tightening rod 24 passes through the cover plate edge hole 222 and the support plate edge hole 232 and is arranged around the periphery of the conical capacitor core 21.
The two ends of the tightening rod 24 are respectively provided with an upper thread 241, a lower thread 242 and a tightening nut 243, and the diameter of the cover plate edge hole 222 and the diameter of the support plate edge hole 232 are both larger than the diameter of the tightening rod 24 and smaller than the outer diameter of the tightening nut 243.
The anti-shifting device between the conical capacitor core layers further comprises a fixing plate 26, the fixing plate 26 is vertically fixed at one end of the tightening rod 24, the fixing plate 26 is connected with the tightening rod 24 through a screw hole 261, and other fixing modes such as gluing or welding can be adopted. The arrangement of the fixed 26 plate can ensure that the whole device is vertically placed on the ground, thereby being convenient for calibrating the vertical position relation of the tightening rod 24, the upper cover plate 22 and the lower supporting plate 23, being convenient for assembling the anti-deviation device between the conical capacitor core layers, improving the stability of the device and improving the safety of operators in the installation process.
When the conical capacitor core 21 is dried, in order to prevent the phenomenon of interlayer offset of the conical capacitor core 21, the interlayer offset prevention device for the conical capacitor core is adopted, and the specific method steps are as follows:
s201: the fixing plate 26 is vertically fixed at one end of the four tightening rods 24 through the screw hole 261;
s202: the lower supporting plate 23 is vertically and fixedly connected with four tightening rods 24;
s203: a conductive rod close to the conical end of the conical capacitor core 21 penetrates through the supporting plate round hole 231, so that the outer conical surface of the conical end of the conical capacitor core 21 is attached to the inner surface of the tightening plate 24;
s204: the conducting rod at the flat end of the conical capacitor core 21 penetrates through the cover plate round hole 221, so that the upper cover plate 22 abuts against the end face of the flat end of the conical capacitor core 21;
s205: the upper cover plate 22 and the tightening rod 24 are vertically fixed until the tapered condenser core 21 is clamped between the upper cover plate 22 and the lower support plate 23.
In step S202, first, the tightening nut 243 and the bottom plate 23 are fitted to the lower thread 242 of the tightening rod 24, the bottom plate 23 is positioned above the tightening nut 243, and the position of the tightening nut 243 is adjusted so that the bottom plate 23 is perpendicular to the tightening rod 24.
In step S203, the smaller end of the tightening plate 25 passes through the circular hole 231 of the supporting plate and is fixed on the inner wall of the circular hole 231 of the supporting plate, the fixing manner between the two can be welding or gluing, and the circular hole 231 of the supporting plate can also directly clamp the outer wall of the tightening plate 25; more specifically, tightening plate 25 includes a fixed plate 251 and a movable plate 252, where fixed plate 251 is fixedly disposed on lower plate 23, and an outer surface of movable plate 252 is attached to an inner surface of fixed plate 251.
In step S205, the upper cover 22 and the tightening rod 24 are fixed by nuts. By providing the tightening nut 243 on the surface of the upper cover plate 22 not contacting the flat end, the position of the tightening nut 243 is adjusted so that the upper cover plate 22 is perpendicular to the tightening rod 24.
According to the method for preventing the interlayer offset of the tapered capacitor core, the tapered capacitor core 21 can be clamped and fixed between the upper cover plate 22 and the lower supporting plate 23 by adopting the interlayer offset preventing device of the tapered capacitor core, the device can be vertically placed or placed at any angle and mode in the drying process, and even under the condition that the control of the heating rate is not accurate in the drying process, the phenomenon that the interlayer offset of the tapered capacitor core 21 is caused by the expansion and contraction of heat or the action of gravity of the conducting rod can be simply and practically prevented; the tightening plate 25 comprises a fixed plate 251 and a movable plate 252, and the movable plate 252 with different inner surface tapers can be replaced to match with the tapered capacitor cores 21 with different tapers, so that the method has certain universality and can provide a solution for interlayer offset of the tapered capacitor cores with different tapers; the arrangement of the fixing plate 26 can ensure that the whole device can be vertically placed on the ground, thereby being convenient for calibrating the vertical position relation between the tightening rod 24 and the upper cover plate 22 and the lower supporting plate 23, being convenient for assembling the anti-deviation device between the conical capacitor core layers, improving the stability of the device and improving the safety of operators in the installation process.
Example three:
as shown in fig. 5 to 8, the interlayer anti-shifting device for a tapered capacitor core of the present embodiment includes four tightening rods 34, an upper cover plate 32, a lower support plate 33 and a tightening plate 35, which are disposed in parallel with each other. The tightening rod 34 vertically penetrates through the lower supporting plate 33 and the upper cover plate 32, the tapered capacitor core 31 is clamped and fixed between the lower supporting plate 33 and the upper cover plate 32, the tightening plate 35 is arranged on the lower supporting plate 33, the tightening plate 35 is in a tapered tubular shape, the tightening plate 35 comprises a fixed plate 351 and a movable plate 352, the fixed plate 351 is fixedly arranged on the lower supporting plate 33, a groove 353 is arranged in the fixed plate 351, the movable plate 352 is embedded in the groove 353, the thickness of the movable plate 352 is larger than the depth of the groove 353, and an arc-shaped chamfer 354 is arranged at the edge of the movable plate 352. The movable plate 352 is optimized to be a separated type from an integral type, so that the cost can be saved, the use of materials can be reduced, the manufacturing of the movable plate 352 can be simplified, and the process forming difficulty can be reduced; the edge of the movable plate 352 is provided with an arc chamfer 354 to avoid the deformation, scratch or indentation of the tapered end of the tapered capacitor core 31 caused by the force applied by the edge of the plate.
The upper cover plate 32 is provided with a cover plate round hole 321, the lower support plate 33 is provided with a support plate round hole 331, and the cover plate round hole 321 and the support plate round hole 331 are coaxially arranged and are used for the conductive rod to pass through. The diameter of the cover plate circular hole 321 is equal to the diameter of the conductive rod, and the diameter of the supporting plate circular hole 331 is larger than the diameter of the conductive rod.
The upper cover plate 32 is provided with a cover plate edge hole 322, the lower support plate 33 is provided with a support plate edge hole 332, and the tightening rod 34 passes through the cover plate edge hole 322 and the support plate edge hole 332 to be surrounded on the periphery of the conical capacitor core 31. The two ends of the tightening rod 34 are respectively provided with an upper thread 341, a lower thread 342 and a tightening nut 343, and the diameter of the cover plate edge hole 322 and the diameter of the support plate edge hole 332 are both larger than the diameter of the tightening rod 34 and smaller than the outer diameter of the tightening nut 343. The tightening rod 34 is connected to the upper cover plate 32 through an upper thread 341 and a tightening nut 343, and the tightening rod 34 is fixedly connected to the lower support plate 33 through a lower thread 342 and the tightening nut 343.
The anti-shifting device between the tapered capacitor core layers further comprises a fixing plate 36, the fixing plate 36 is vertically fixed at one end of the tightening rod 34, and the fixing plate 36 is connected with the tightening rod 34 through a screw hole 361.
When the tapered capacitor core 31 is dried, in order to prevent the tapered capacitor core 31 from generating interlayer offset, the interlayer offset prevention device for the tapered capacitor core is adopted, and the specific method steps are as follows:
s301: the fixing plate 36 is vertically fixed at one end of the tightening rod 34 through a screw hole 361;
s302: the lower supporting plate 33 is vertically and fixedly connected with the tightening rod 34;
s303: the conductive rod close to the conical end of the conical capacitor core 31 passes through the supporting plate round hole 331, so that the outer conical surface of the conical end of the conical capacitor core 31 is attached to the inner surface of the tightening plate 34;
s304: the conductive rod at the flat end of the tapered capacitor core 31 passes through the cover plate circular hole 321, so that the upper cover plate 32 abuts against the end face of the flat end of the tapered capacitor core 31;
s305: the upper cover plate 32 and the tightening rod 34 are vertically fixed until the tapered condenser core 31 is clamped between the upper cover plate 32 and the lower plate 33.
In the step S302, the tightening nut 343 and the lower blade 33 are first sleeved on the lower thread 342 of the tightening rod 34, the lower blade 33 is positioned on the tightening nut 343, and the position of the tightening nut 343 is adjusted so that the lower blade 33 is perpendicular to the tightening rod 34.
In the step S303, the end of the tightening plate 35 with a smaller diameter passes through the supporting plate circular hole 331 and is fixed on the inner wall of the supporting plate circular hole 331, the fixing manner between the two can be welding or gluing, and the supporting plate circular hole 331 can also directly clamp the outer wall of the tightening plate 35; more specifically, tightening plate 35 includes a fixed plate 351 and a movable plate 352, fixed plate 351 is fixedly disposed on bottom plate 33, a groove 353 is disposed in fixed plate 351, movable plate 352 is fitted in groove 353, and movable plate 352 is attached to the tapered end of tapered capacitor core 31.
In step S305, the upper cover 32 and the tightening rod 34 are fixed by nuts. By providing the tightening nut 343 on the surface of the upper cover plate 32 not contacting the flat end, the position of the tightening nut 343 is adjusted so that the upper cover plate 32 is perpendicular to the tightening rod 34.
The method for preventing the interlayer offset of the tapered capacitor core can clamp and fix the tapered capacitor core 31 between the upper cover plate 32 and the lower supporting plate 33 by adopting the interlayer offset preventing device of the tapered capacitor core, the device can be placed at any angle and mode in the drying process, and the phenomenon that the conductive rod causes the interlayer offset of the tapered capacitor core 31 due to the expansion and contraction effect of heat or the effect of gravity can be simply and practically prevented even under the condition of inaccurate control of the heating rate in the drying process. The movable plate 352 is optimized to be a separated type from an integral type, so that the cost can be saved, the use of materials can be reduced, the manufacturing of the movable plate 352 can be simplified, and the process forming difficulty can be reduced. The edge of the movable plate 352 is provided with an arc chamfer 354 to avoid the deformation, scratch or indentation of the tapered end of the tapered capacitor core 31 caused by the force applied by the edge of the plate.
While the invention has been described with reference to the above disclosure and features, it will be understood by those skilled in the art that various changes and modifications in the above constructions and materials can be made, including combinations of features disclosed herein either individually or in any combination, as appropriate, without departing from the spirit of the invention. Such variations and/or combinations are within the skill of the art to which the invention pertains and are within the scope of the following claims.
Claims (10)
1. An anti-deviation device between conical capacitor core layers, wherein a conductive rod is arranged in the center of the conical capacitor core, and the device is characterized by comprising: at least two tightening rods, an upper cover plate, a lower supporting plate and a tightening plate, which are arranged in parallel;
the tightening rod vertically penetrates through the lower supporting plate and the upper cover plate and clamps and fixes the conical capacitor core between the lower supporting plate and the upper cover plate;
the tightening plate is arranged on the lower supporting plate, the tightening plate is in a conical tube shape, and the inner surface of the tightening plate is smooth and is matched with the conical surface of the conical capacitor core;
the upper cover plate is provided with a cover plate round hole, the lower supporting plate is provided with a supporting plate round hole, and the cover plate round hole and the supporting plate round hole are coaxially arranged and are used for the conducting rod to penetrate through.
2. The tapered capacitor core interlayer misalignment preventing device of claim 1, wherein the diameter of the cover plate circular hole is equal to the diameter of the conductive rod, and the diameter of the support plate circular hole is greater than or equal to the diameter of the conductive rod.
3. The tapered capacitor core interlayer anti-shifting device of claim 1, wherein the diameter of the supporting plate circular hole is larger than the outer diameter of the smaller end of the tightening plate, and the inner wall of the supporting plate circular hole is fixedly connected with the outer wall of the tightening plate.
4. The tapered capacitor core interlayer anti-shifting apparatus of claim 1, wherein the tightening plate comprises a fixed plate and a movable plate, the fixed plate is fixedly disposed on the bottom plate, an outer surface of the movable plate is attached to an inner surface of the fixed plate, and the movable plate is made of a hard material.
5. The interlayer anti-shifting apparatus for a tapered condenser core according to claim 4, wherein the stationary plate has a recess formed therein, the movable plate is fitted into the recess, the thickness of the movable plate is greater than the depth of the recess, and the edge of the movable plate is provided with an arc-shaped chamfer.
6. The interlayer anti-shifting apparatus for tapered condenser cores as claimed in claim 1, wherein the upper cover plate is provided with a cover plate edge hole, the lower support plate is provided with a support plate edge hole, and the tightening rod passes through the cover plate edge hole and the support plate edge hole to surround the outer circumference of the tapered condenser core.
7. The tapered capacitor core interlayer anti-shifting apparatus of claim 6, wherein the tightening rod is provided with threads and a tightening nut, and the diameter of the cover plate side hole and the diameter of the support plate side hole are both larger than the diameter of the tightening rod and smaller than the outer diameter of the tightening nut.
8. The tapered capacitor core interlayer anti-shifting apparatus of claim 1, further comprising a fixing plate vertically fixed to one end of at least two of said tightening rods.
9. A method for preventing interlayer offset of a tapered capacitor core using the interlayer offset preventing device of a tapered capacitor core according to claim 1, wherein one end of the tapered capacitor core is a tapered end and the other end is a flat end, the method comprising the steps of: vertically and fixedly connecting the lower supporting plate with the at least two tightening rods;
penetrating the conductive rod close to the conical end of the conical capacitor core through the supporting plate round hole to enable the conical surface of the conical capacitor core to be attached to the inner surface of the tightening plate;
penetrating the conducting rod at the flat end of the conical capacitor core through the cover plate round hole to enable the upper cover plate to abut against the end face of the flat end of the conical capacitor core;
and vertically fixing the upper cover plate and the tightening rod until the conical capacitor core is clamped between the upper cover plate and the lower supporting plate.
10. The method of preventing delamination of tapered condenser cores as defined in claim 9 wherein said tightening rod is vertically disposed.
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| CN201811596940.6A CN109801765B (en) | 2018-12-26 | 2018-12-26 | Device and method for preventing deviation between conical capacitor core layers |
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| CN201811596940.6A CN109801765B (en) | 2018-12-26 | 2018-12-26 | Device and method for preventing deviation between conical capacitor core layers |
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| CN109801765B true CN109801765B (en) | 2020-08-11 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102693790A (en) * | 2011-03-24 | 2012-09-26 | 日本碍子株式会社 | Interlayer migration prevention device for oil impregnated paper capacitor core and oil impregnated paper capacitor type sleeve |
| CN106710872A (en) * | 2017-01-19 | 2017-05-24 | 苏州廖若机电科技有限公司 | Capacitor packet guide rod positioning device with pre-positioning device |
| CN106783160A (en) * | 2017-01-19 | 2017-05-31 | 苏州廖若机电科技有限公司 | A kind of guide pole positioning device of small-sized capacitor core |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101474138B1 (en) * | 2013-06-05 | 2014-12-17 | 삼성전기주식회사 | Multi-layered ceramic electronic component and method of manufacturing the same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102693790A (en) * | 2011-03-24 | 2012-09-26 | 日本碍子株式会社 | Interlayer migration prevention device for oil impregnated paper capacitor core and oil impregnated paper capacitor type sleeve |
| CN106710872A (en) * | 2017-01-19 | 2017-05-24 | 苏州廖若机电科技有限公司 | Capacitor packet guide rod positioning device with pre-positioning device |
| CN106783160A (en) * | 2017-01-19 | 2017-05-31 | 苏州廖若机电科技有限公司 | A kind of guide pole positioning device of small-sized capacitor core |
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