CN111211460A - Electric connection method and connection device for high-voltage equipment lead and metal inner barrel - Google Patents
Electric connection method and connection device for high-voltage equipment lead and metal inner barrel Download PDFInfo
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- CN111211460A CN111211460A CN202010025842.8A CN202010025842A CN111211460A CN 111211460 A CN111211460 A CN 111211460A CN 202010025842 A CN202010025842 A CN 202010025842A CN 111211460 A CN111211460 A CN 111211460A
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- 239000002184 metal Substances 0.000 title claims abstract description 37
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005476 soldering Methods 0.000 claims description 17
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 13
- 230000001154 acute effect Effects 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229910001369 Brass Inorganic materials 0.000 claims description 4
- 239000010951 brass Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/021—Locking of screws, bolts or nuts in which the locking takes place after screwing down by injecting a settable material after the screwing down
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/02—Soldered or welded connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
- H01R43/0235—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections for applying solder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/26—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
The invention relates to an electric connection method and a connection device for a high-voltage equipment lead and a metal inner cylinder, which solve the problems of unreliable electric connection, poor connection strength and easy falling-off of the existing high-voltage equipment and solve the problem that the existing electric connection device can not be suitable for electric connection between the high-voltage equipment lead and a large-area metal connection layer. The method comprises the following steps: step one, an inner cylinder conical through hole is formed in an inner cylinder of high-voltage equipment, and the inner cylinder of the high-voltage equipment comprises a first inner cylinder and a second inner cylinder; step two, processing the hollow conductive column, and fixing the conducting wire in the central hole of the hollow conductive column; inserting the hollow conductive column with the conducting wire into the conical through hole of the inner cylinder; completely fixing the hollow conductive column on the inner cylinder of the high-voltage equipment by using a nut and a cushion block; and step five, checking the electric connection state of the lead and the inner barrel.
Description
Technical Field
The invention relates to an electric connection method of high-voltage equipment, in particular to an electric connection method and a connection device of a high-voltage equipment lead and a metal inner cylinder.
Background
In some high voltage devices, it is generally desirable to make electrical connections between the wires and the large area metal layer. In the conventional method, blind holes are processed on a metal surface to be welded, and a lead is welded in the blind holes on a large-area metal layer by using soldering tin and an electric soldering iron. In this way, since the welding between the lead and the large-area metal layer is realized, the electric conduction between the lead and the metal layer can be realized. However, this method has the following drawbacks: the connection between the wire and the metal layer is unreliable, the connection strength is poor, and the falling-off phenomenon is easy to generate, and the main reasons of the problem are as follows: when the electric soldering iron and the soldering tin are used for soldering the conducting wire, heat is rapidly dissipated through the large-area metal layer, and the bonding force between the conducting wire and the metal layer is insufficient during soldering due to insufficient heat in the blind hole of the metal layer. Therefore, the method is only suitable for laboratory equipment with low environmental adaptability requirements and is not suitable for mature high-voltage equipment such as transformers and the like.
The invention patent with the application number of CN201910568989.9 discloses a bolt, a nut and a conductive connection method, which ensure the conductivity between the bolt, the nut and a connection flange by ensuring the contact area between the bolt, the nut and the connection flange, and further realize the conductivity between two adjacent pipelines by the electrical connection between the bolt and the nut. The invention patent with application number CN201510742001.8 discloses an electric connection component and an electric connection method, the electric connection component listed in the invention is a new structure of multipoint connection, and the electric reliability of the whole machine is greatly improved by the connection mode of buckling a conductive pin and a conductive sheet, the assembly process is simpler, and the difficulty of the maintenance of the whole machine is greatly reduced. However, both of the above-mentioned applications propose new ideas in terms of conductive structure and conductive reliability, but the objects and the scope of application are to electrical connection between a plurality of specific electrical component structures, and are not applicable to electrical connection between metal layers having a large area.
Disclosure of Invention
The invention aims to solve the problems of unreliable electric connection, poor connection strength and easy falling off of the existing high-voltage equipment and the problem that the existing electric connection device is not suitable for electric connection between a high-voltage equipment lead and a large-area metal connection layer, and provides an electric connection method and a connection device for the high-voltage equipment lead and a metal inner cylinder.
The method and the device firstly provide a conical hollow conductive column structure, the conducting wire is inserted into a through hole of the conical hollow conductive column after being peeled, then the conducting wire and the hollow conductive column structure are reliably welded by a hot air gun and soldering tin, a micro-conical through hole which is matched with the conical shape of the hollow conductive column is arranged on an inner cylinder of high-voltage equipment, finally the hollow conductive column structure with the conducting wire is embedded into the micro-conical through hole arranged on the inner cylinder, and the reliable electric connection between the conducting wire and the inner cylinder is realized by fixing a cushion block and a nut.
In order to achieve the purpose, the technical method adopted by the invention is as follows:
a method for electrically connecting a high-voltage equipment lead and a metal inner barrel comprises the following steps:
step one, an inner cylinder conical through hole is formed in an inner cylinder of high-voltage equipment, and the inner cylinder of the high-voltage equipment comprises a first inner cylinder and a second inner cylinder;
1.1) sleeving a second inner cylinder on the outer side of the first inner cylinder, wherein the second inner cylinder is coaxially and fixedly connected with the first inner cylinder to form an inner cylinder of high-voltage equipment;
1.2) forming an inner cylinder tapered through hole with the taper of 0.5-1 degree on the inner cylinder of the high-voltage equipment, wherein the aperture of the inner cylinder tapered through hole close to the second inner cylinder is larger than that of the inner cylinder tapered through hole close to the first inner cylinder;
step two, processing the hollow conductive column, and fixing the conducting wire in the central hole of the hollow conductive column;
2.1) processing a hollow conductive column, wherein the hollow conductive column comprises a cone and a cylinder which are connected, the taper of the cone is 1.5-2 degrees, and the top of the cone is provided with an arc surface matched with the outer surface of the second inner cylinder; the outer surface of the cylinder is provided with an external thread;
2.2) clamping the hollow conductive column, integrally heating the hollow conductive column, and pouring soldering tin from the top of the central hole of the hollow conductive column until the soldering tin flows out from the tail part; keeping the horizontal heating state of the hollow conductive columns, and inserting the conductor with the outer skin removed into the tail part from the top of the central hole of the hollow conductive column until the conductor is exposed out of the tail part;
2.3) continuously clamping the hollow conductive column to slowly cool the hollow conductive column, and completely connecting the inner core of the conductive line and the hollow conductive column together after cooling;
inserting the hollow conductive column with the conducting wire into the conical through hole of the inner cylinder;
the tail part of the cylinder with the threads points to the inlet of the inner cylinder tapered through hole on the outer surface of the second inner cylinder, the hollow conductive column is completely inserted into the inner cylinder tapered through hole from outside to inside, the cambered surface at the top of the cone is parallel and level to the outer surface of the second inner cylinder, and the cone is tightly attached to the inner cylinder tapered through hole;
completely fixing the hollow conductive column on the inner cylinder of the high-voltage equipment by using a nut and a cushion block;
coating thread anti-loosening glue on the nut threads, sequentially sleeving the cushion block and the nut on the external threads at the tail part of the hollow conductive column, and applying torque to ensure that the top surface of the cushion block is completely attached to the inner surface of the first inner cylinder;
and fifthly, checking the electric connection state of the lead and the inner cylinder of the high-voltage equipment.
Further, in the step 1.2), the central line of the conical through hole of the inner cylinder is intersected with the axis of the inner cylinder of the high-voltage equipment, and the included angle is an acute angle; or the central line of the conical through hole of the inner cylinder is different from the axial line of the inner cylinder of the high-voltage equipment, and the included angle formed by the straight lines of the different surfaces is an acute angle. The conical through hole of the inner barrel is obliquely arranged on the inner barrel of the high-voltage equipment, so that the wire is installed smoothly and is not easy to bend, and the service life of the wire is greatly prolonged.
Further, the step five specifically includes the following processes: and (4) utilizing a universal meter, connecting one end of the universal meter with the inner core of the lead, and connecting one end of the universal meter with the first inner cylinder or the second inner cylinder, and checking the conduction condition.
Further, in step 2.2), the hollow conductive column is integrally heated to 300-500 ℃ by a hot air gun.
Further, in step 1.1), the first inner cylinder and the second inner cylinder are welded and connected, and the hollow conductive column is a hollow copper column.
Meanwhile, the invention provides an electric connection device of a high-voltage equipment lead and a metal inner cylinder, which comprises the high-voltage equipment inner cylinder, a hollow conductive column, a lead, a cushion block and a nut; the high-voltage equipment inner cylinder comprises a first inner cylinder and a second inner cylinder, the second inner cylinder is sleeved outside the first inner cylinder, and the second inner cylinder is coaxially and fixedly connected with the first inner cylinder; the wall of the inner cylinder of the high-pressure equipment is provided with an inner cylinder tapered through hole with the taper of 0.5-1 degrees, and the aperture of the inner cylinder tapered through hole close to the second inner cylinder is larger than the aperture close to the first inner cylinder; the hollow conductive column comprises a cone and a cylinder which are connected, the taper of the cone is 1.5-2 degrees, and the top of the cone is provided with an arc surface matched with the outer surface of the second inner cylinder; the outer surface of the cylinder is provided with external threads; the cone of the hollow conductive column is arranged in the conical through hole of the inner cylinder, the cushion block is sleeved on the cylinder, and the top of the cushion block is provided with a cambered surface matched with the inner surface of the first inner cylinder; the nut is sleeved on the cylinder and is in threaded connection with the cylinder, and the hollow conductive column is fixed on the inner cylinder of the high-voltage equipment; one end of the conducting wire is fixed in the hollow conducting column central hole after the outer skin is removed, and the other end of the conducting wire is arranged in the high-voltage equipment coil cable groove, so that the conducting wire of the high-voltage equipment is electrically connected with the metal inner cylinder.
Furthermore, the central line of the conical through hole of the inner cylinder is intersected with the axis of the inner cylinder of the high-voltage equipment, and the included angle is an acute angle; or the central line of the conical through hole of the inner cylinder is different from the axial line of the inner cylinder of the high-voltage equipment, and the included angle formed by the straight lines of the different surfaces is an acute angle.
Further, the threaded connection of the nut and the cylinder is coated with threaded anti-loosening glue.
Furthermore, the inner diameter of the through hole of the cushion block is larger than the outer diameter of the cylinder by 0.5mm, so that the cylinder can be conveniently inserted into the through hole of the cushion block, the diameter of the center hole of the hollow conductive column is larger than the diameter of the lead by 0.5mm, and the lead can be conveniently inserted into the center hole of the hollow conductive column.
Further, the hollow conductive column is made of a brass material, and the cushion block is made of a stainless steel material.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
1. the invention provides a method and a device for realizing reliable electric connection between a wire and a large-area metal layer by utilizing a hollow conductive column welding structure. In the electric connection method and the device, the heat dissipation area of the hollow conductive column structure is small, the hollow conductive column structure is heated by the hot air gun to fully soften the soldering tin, and the conducting wire can be completely and tightly attached to the hollow conductive column structure by the soldering tin; the hollow conductive column structure is inserted into the micro-conical through hole of the inner cylinder after being completely cooled, and the nut and the cushion block are utilized to realize reliable attachment of the hollow conductive column structure and the inner cylinder, so that the conducting wire and the inner cylinder are reliably and tightly electrically connected and are not easy to fall off, and the problem of low reliability of the traditional electric connection method is solved.
2. The electric connection method provided by the invention has the advantages that the hollow conductive column is fixed on the inner cylinder by the nut and the cushion block, the structural connection is reliable, and the impact on the connection caused by complex environments such as equipment transportation and the like can be borne.
3. The invention indirectly realizes the electric connection between the conducting wire and the inner cylinder of the high-voltage equipment by utilizing the hollow conducting column, and the hollow conducting column is tightly matched with the conical through hole of the inner cylinder by utilizing the characteristic of good ductility of brass.
Drawings
FIG. 1 is a schematic structural diagram of an electrical connection device for a high-voltage device wire and a metal inner cylinder according to the present invention;
FIG. 2 is a schematic structural diagram of an inner cylinder of a high-voltage apparatus according to the present invention;
fig. 3 is a schematic structural diagram of the hollow conductive pillar according to the present invention;
fig. 4 is a schematic diagram of a hollow conductive pillar via according to the present invention;
FIG. 5 is a schematic view of the spacer of the present invention.
Reference numerals: 1-hollow conductive column, 2-first inner cylinder, 3-second inner cylinder, 4-nut, 5-cushion block, 6-wire, 7-cable groove, 8-high voltage equipment coil, 9-inner cylinder conical through hole, 10-hollow conductive column center hole, 11-cone, 12-cylinder.
Detailed Description
The technical scheme of the invention is explained in detail in the following by combining the drawings and the specific embodiment.
The invention provides an electric connection method and a connection device for a high-voltage equipment wire and a metal inner cylinder, which are applied to a class of transformer structures.A high-voltage equipment coil 8 comprises a plurality of layers of spiral cable grooves 7, and the wire 6 is arranged in the plurality of layers of spiral cable grooves 7.
As shown in fig. 1 to 5, the electrical connection device for a high-voltage device conducting wire and a metal inner cylinder provided by the invention comprises a high-voltage device inner cylinder, a hollow conducting pillar 1, a conducting wire 6, a cushion block 5 and a nut 4; the high-voltage equipment inner cylinder comprises a first inner cylinder 2 and a second inner cylinder 3, the second inner cylinder 3 is sleeved on the outer side of the first inner cylinder 2, the second inner cylinder 3 is coaxially and fixedly connected with the first inner cylinder 2, and the first inner cylinder 2 and the second inner cylinder 3 are welded into a whole through welding. The wall of the inner cylinder of the high-voltage equipment is provided with an inner cylinder tapered through hole 9 with the taper of 0.5-1 degrees, the aperture of the inner cylinder tapered through hole 9 close to the second inner cylinder 3 is larger than that close to the first inner cylinder 2, and the aperture of the large end of the inner cylinder tapered through hole is in transition tight fit with the cone 11 of the hollow conductive column 1. Preferably, the central line of the conical through hole 9 of the inner cylinder is intersected with the axis of the inner cylinder of the high-voltage equipment, and the included angle is an acute angle; or the central line of the conical through hole 9 of the inner cylinder is in a different plane with the axis of the inner cylinder of the high-voltage equipment, and the included angle formed by the straight lines of the different planes is an acute angle. At this moment, the conducting wire in the hollow conducting post 1 is obliquely arranged on the inner cylinder of the high-voltage equipment, so that the conducting wire 6 is installed more smoothly and is not easy to bend, and the service life of the conducting wire 6 is greatly prolonged. If the central line of the conical through hole 9 of the inner cylinder is perpendicular to the axis of the inner cylinder of the high-voltage equipment, the wire is easy to bend, so that the wire at the bent part is easy to break, and the service life of the wire is influenced.
The hollow conductive column 1 comprises a cone 11 and a cylinder 12 which are connected, specifically, the cone 11 and the cylinder 12 can be integrally processed into a whole, or can be fixedly connected after being processed respectively in a split processing mode, the taper of the cone 11 is 1.5-2 degrees, and the top of the cone 11 is set to be an arc surface matched with the outer surface of the second inner cylinder 3; the outer surface of the cylinder 12 is provided with external threads; the cone 11 of the hollow conductive column 1 is arranged in the inner cylinder conical through hole 9, the cushion block 5 is sleeved on the cylinder 12, and the top of the cushion block 5 is provided with a cambered surface matched with the inner surface of the first inner cylinder 2 so as to ensure that the top surface of the cushion block 5 is tightly attached to the inner surface of the first inner cylinder 2 during assembly; nut 4 suit is on cylinder 12, with cylinder 12 threaded connection, and the threaded connection department coating of nut 4 and cylinder 12 has the screw thread to prevent loosing glue, leads electrical pillar 1 to fix on the high-voltage apparatus inner tube with the cavity.
One end of the conducting wire 6 is fixed in the hollow conducting column center hole 10 after removing the outer skin, and the other end is arranged in the cable groove 7 of the high-voltage equipment coil 8, so that the conducting wire of the high-voltage equipment is electrically connected with the metal inner cylinder. The inner diameter of the through hole of the cushion block 5 is 0.5mm larger than the outer diameter of the cylinder 12, so that the cylinder 12 can be conveniently inserted into the through hole of the cushion block 5, the diameter of the central hole 10 of the hollow conductive column is 0.5mm larger than that of the lead 6, and the lead 6 can be conveniently inserted into the central hole 10 of the hollow conductive column.
The hollow conductive column 1 is made of brass material, the cushion block 5 is made of stainless steel material, the inner core of the lead 6 is a silver-plated copper wire, and the outer side of the lead is coated with polytetrafluoroethylene.
Meanwhile, the invention provides an electric connection method of a high-voltage equipment conducting wire and a metal inner cylinder, the electric connection method utilizes a small-size hollow conducting column 1, a conducting wire 6 is welded in the hollow conducting column 1 through soldering tin, heat is not easy to dissipate, the soldering tin is convenient to fill the gap between the conducting wire 6 and a central hole 10 of the hollow conducting column, and the problem of unreliable welding caused by rapid volatilization of direct welding heat on a large-size metal surface is solved, and the electric connection method specifically comprises the following steps:
step one, an inner cylinder conical through hole 9 is formed in an inner cylinder of high-voltage equipment, and the inner cylinder of the high-voltage equipment comprises a first inner cylinder 2 and a second inner cylinder 3;
1.1) sleeving a second inner cylinder 3 outside the first inner cylinder 2, wherein the second inner cylinder 3 is coaxially and fixedly connected with the first inner cylinder 2 to form an inner cylinder of high-voltage equipment;
1.2) after the welding processing of the first inner cylinder 2 and the second inner cylinder 3 is finished, forming an inner cylinder conical through hole 9 with the taper of 0.5-1 degree on the inner cylinder of the high-voltage equipment by using a machine tool, wherein the aperture of the inner cylinder conical through hole 9 close to the second inner cylinder 3 is larger than that close to the first inner cylinder 2;
step two, processing the hollow conductive column 1, and fixing the conducting wire 6 in the central hole 10 of the hollow conductive column;
2.1) as shown in fig. 3, processing a hollow conductive column 1 by matching with the size of the inner cylinder tapered through hole 9, wherein the hollow conductive column 1 comprises a cone 11 and a cylinder 12 which are connected, the taper of the cone 11 is 1.5-2 degrees, and the top of the cone 11 is set to be an arc surface matched with the outer surface of the second inner cylinder 3; the outer surface of the cylinder 12 is provided with external threads;
2.2) as shown in fig. 4, horizontally clamping the hollow conductive column 1 by using a pliers, integrally heating the hollow conductive column 1 to 300-500 ℃ by using a hot air gun, and pouring soldering tin from the top of the central hole 10 of the hollow conductive column until the soldering tin flows out from the tail part; keeping the horizontal heating state of the hollow conductive column 1, and inserting the conductor 6 without the polytetrafluoroethylene into the tail part from the top of the central hole 10 of the hollow conductive column by using another pliers until the conductor 6 is exposed by about 1mm from the tail part;
2.3) continuously horizontally clamping the hollow conductive column 1 by using a pliers to slowly cool the hollow conductive column, wherein the inner core of the conducting wire 6 is completely and reliably connected with the hollow conductive column 1 after cooling;
inserting the hollow conductive column 1 with the conducting wire 6 into the conical through hole 9 of the inner cylinder;
as shown in fig. 1, the threaded tail of the hollow conductive post 1 is directed to the inlet of the inner cylinder tapered through hole 9 on the outer surface of the second inner cylinder 3, and the hollow conductive post 1 is completely inserted into the inner cylinder tapered through hole 9 from outside to inside; the cambered surface at the top of the cone 11 is aligned with the outer surface of the second inner cylinder 3, and the cone 11 is tightly attached to the conical through hole 9 of the inner cylinder;
step four, the hollow conductive column 1 is completely fixed on the inner cylinder of the high-voltage equipment by utilizing the nut 4 and the cushion block 5;
as shown in fig. 1, a thread anti-loosening glue is coated on the thread of the nut 4, the cushion block 5 and the nut 4 are brought into the external thread at the tail part of the hollow conductive column 1 in sequence, and a moment is applied to make the top surface of the cushion block 5 completely attached to the inner surface of the first inner cylinder 2;
fifthly, checking the electric connection state of the lead 6 and the inner barrel;
and (3) utilizing a universal meter, connecting one end of the universal meter with an inner core of the lead 6 and one end of the universal meter with the first inner cylinder 2 or the second inner cylinder 3, and checking the electric conduction condition.
In the electric connection method, the lead 6 is indirectly and reliably electrically connected with the inner cylinder of the high-voltage equipment through the hollow conductive column 1, and the electric connection between the hollow conductive column 1 and the inner cylinder of the high-voltage equipment is realized by two parts: the cone of the first hollow conductive column 1 is tightly matched with the through hole of the second inner cylinder 3; and secondly, the hollow conductive column 1 tail part thread through hole nut 4 and the cushion block 5 are tightly attached to the inner surface of the first inner cylinder 2.
Claims (10)
1. A method for electrically connecting a high-voltage equipment lead and a metal inner barrel is characterized by comprising the following steps:
step one, an inner cylinder conical through hole (9) is formed in an inner cylinder of high-voltage equipment, and the inner cylinder of the high-voltage equipment comprises a first inner cylinder (2) and a second inner cylinder (3);
1.1) sleeving a second inner cylinder (3) on the outer side of the first inner cylinder (2), wherein the second inner cylinder (3) is coaxially and fixedly connected with the first inner cylinder (2) to form an inner cylinder of the high-voltage equipment;
1.2) forming an inner cylinder conical through hole (9) with the taper of 0.5-1 degree on the inner cylinder of the high-voltage equipment, wherein the aperture of the inner cylinder conical through hole (9) close to the second inner cylinder (3) is larger than the aperture close to the first inner cylinder (2);
step two, processing the hollow conductive column (1), and fixing the conducting wire (6) in the central hole (10) of the hollow conductive column;
2.1) processing the hollow conductive column (1), wherein the hollow conductive column (1) comprises a cone (11) and a cylinder (12) which are connected, the taper of the cone (11) is 1.5-2 degrees, and the top of the cone (11) is arranged to be an arc surface matched with the outer surface of the second inner cylinder (3); the outer surface of the cylinder (12) is provided with external threads;
2.2) clamping the hollow conductive column (1), integrally heating the hollow conductive column (1), pouring soldering tin from the top of the central hole (10) of the hollow conductive column until the soldering tin flows out of the tail part, keeping the horizontal heating state of the hollow conductive column (1), and inserting the lead (6) with the outer skin removed into the tail part from the top of the central hole (10) of the hollow conductive column until the lead (6) is exposed from the tail part;
2.3) continuously clamping the hollow conductive column (1) to slowly cool the hollow conductive column, and completely connecting the inner core of the conductive line (6) with the hollow conductive column (1) after cooling;
inserting the hollow conductive column (1) with the conducting wire (6) into the conical through hole (9) of the inner cylinder;
the threaded tail of the cylinder (12) points to the inlet of the inner cylinder tapered through hole (9) on the outer surface of the second inner cylinder (3), the hollow conductive column (1) is completely inserted into the inner cylinder tapered through hole (9) from outside to inside, the cambered surface at the top of the cone (11) is flush with the outer surface of the second inner cylinder (3), and the cone (11) is tightly attached to the inner cylinder tapered through hole (9);
fixing the hollow conductive column (1) on the inner cylinder of the high-voltage equipment by using a nut (4) and a cushion block (5);
coating thread anti-loosening glue on the threads of the nut (4), sequentially sleeving the cushion block (5) and the nut (4) on the external threads at the tail part of the hollow conductive column (1), and applying torque to ensure that the top surface of the cushion block (5) is completely attached to the inner surface of the first inner cylinder (2);
and fifthly, checking the electric connection state of the lead (6) and the inner cylinder of the high-voltage equipment.
2. The method of claim 1, wherein the step of electrically connecting the high-voltage device conductor to the metal inner barrel comprises: in the step 1.2), the central line of the inner cylinder conical through hole (9) is intersected with the axis of the inner cylinder of the high-voltage equipment, and the included angle is an acute angle; or the central line of the inner cylinder conical through hole (9) is in a non-coplanar state with the axis of the inner cylinder of the high-voltage equipment, and the included angle formed by the non-coplanar straight lines is an acute angle.
3. The method for electrically connecting a high-voltage equipment wire and a metal inner barrel according to claim 2, wherein the step five specifically comprises the following processes: and (3) utilizing a universal meter, connecting one end of the universal meter with an inner core of the lead (6) and one end of the universal meter with the first inner cylinder (2) or the second inner cylinder (3), and checking the electric conduction condition.
4. The method for electrically connecting a high-voltage apparatus conductor to a metal inner tube according to claim 1, 2 or 3, characterized in that: in the step 2.2), the hollow conductive column (1) is integrally heated to 300-500 ℃ by a hot air gun.
5. The method of claim 4, wherein the step of electrically connecting the high-voltage device conductor to the metal inner barrel comprises: in the step 1.1), the first inner cylinder (2) and the second inner cylinder (3) are connected in a welding mode, and the hollow conductive column (1) is a hollow copper column.
6. The utility model provides an electric connection device of high tension apparatus wire and metal inner tube which characterized in that: the high-voltage device comprises an inner cylinder of high-voltage equipment, a hollow conductive column (1), a conducting wire (6), a cushion block (5) and a nut (4);
the high-voltage equipment inner cylinder comprises a first inner cylinder (2) and a second inner cylinder (3), the second inner cylinder (3) is sleeved on the outer side of the first inner cylinder (2), and the second inner cylinder (3) is coaxially and fixedly connected with the first inner cylinder (2);
an inner cylinder conical through hole (9) with the taper of 0.5-1 degree is formed in the wall of the inner cylinder of the high-pressure equipment, and the aperture of the inner cylinder conical through hole (9) close to the second inner cylinder (3) is larger than the aperture of the inner cylinder conical through hole close to the first inner cylinder (2);
the hollow conductive column (1) comprises a cone (11) and a cylinder (12) which are connected, the taper of the cone (11) is 1.5-2 degrees, the top of the cone (11) is arranged to be a cambered surface matched with the outer surface of the second inner cylinder (3), and the outer surface of the cylinder (12) is provided with an external thread;
the cone (11) of the hollow conductive column (1) is arranged in the inner cylinder conical through hole (9), the cushion block (5) is sleeved on the cylinder (12), and the top of the cushion block (5) is arranged to be a cambered surface matched with the inner surface of the first inner cylinder (2); the nut (4) is sleeved on the cylinder (12) and is in threaded connection with the cylinder (12), and the hollow conductive column (1) is fixed on the inner cylinder of the high-voltage equipment;
one end of the conducting wire (6) is fixed in the hollow conducting post center hole (10) after the outer skin is removed, and the other end of the conducting wire is arranged in a cable groove (7) of a high-voltage equipment coil (8), so that the conducting wire of the high-voltage equipment is electrically connected with an inner cylinder of the high-voltage equipment.
7. The electrical connection device of a high-voltage equipment wire and a metal inner barrel of claim 6, wherein: the central line of the inner cylinder conical through hole (9) is intersected with the axis of the inner cylinder of the high-voltage equipment, and the included angle is an acute angle; or the central line of the inner cylinder conical through hole (9) is in a non-coplanar state with the axis of the inner cylinder of the high-voltage equipment, and the included angle formed by the non-coplanar straight lines is an acute angle.
8. The electrical connection device of a high-voltage equipment wire and a metal inner barrel of claim 7, wherein: the threaded connection part of the nut (4) and the cylinder (12) is coated with threaded anti-loosening glue.
9. The electrical connection device of the high-voltage equipment conducting wire and the metal inner cylinder as claimed in claim 6, 7 or 8, wherein: the through-hole internal diameter of cushion (5) is greater than the external diameter 0.5mm of cylinder (12), is convenient for cylinder (12) to insert in the through-hole of cushion (5), the diameter that the lead electrical pillar centre bore of cavity (10) is greater than wire (6) diameter 0.5mm, is convenient for wire (6) to insert lead electrical pillar centre bore of cavity (10).
10. The electrical connection device of a high-voltage equipment wire to a metal inner barrel of claim 9, wherein: the hollow conductive column (1) is made of a brass material, and the cushion block (5) is made of a stainless steel material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010025842.8A CN111211460B (en) | 2020-01-10 | 2020-01-10 | Electric connection method and connection device for high-voltage equipment lead and metal inner barrel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010025842.8A CN111211460B (en) | 2020-01-10 | 2020-01-10 | Electric connection method and connection device for high-voltage equipment lead and metal inner barrel |
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| CN111211460A true CN111211460A (en) | 2020-05-29 |
| CN111211460B CN111211460B (en) | 2021-04-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114069352A (en) * | 2021-11-05 | 2022-02-18 | 杭州良田电子科技有限公司 | Terminal pressing method for end of electronic wire harness |
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| CN105119069A (en) * | 2015-09-09 | 2015-12-02 | 国网山东夏津县供电公司 | Digital substation transformer high-voltage porcelain bush wiring chuck |
| CN109309291A (en) * | 2017-07-26 | 2019-02-05 | 朗德万斯公司 | The connection of conducting element and illuminating device circuit board |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2077597U (en) * | 1990-06-14 | 1991-05-22 | 南京线路器材厂 | Current connector of cylindrical terminal |
| CN202382799U (en) * | 2011-12-29 | 2012-08-15 | 合肥德安水处理设备有限公司 | Water level induction electrode |
| CN105119069A (en) * | 2015-09-09 | 2015-12-02 | 国网山东夏津县供电公司 | Digital substation transformer high-voltage porcelain bush wiring chuck |
| CN109309291A (en) * | 2017-07-26 | 2019-02-05 | 朗德万斯公司 | The connection of conducting element and illuminating device circuit board |
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| CN114069352A (en) * | 2021-11-05 | 2022-02-18 | 杭州良田电子科技有限公司 | Terminal pressing method for end of electronic wire harness |
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| CN111211460B (en) | 2021-04-02 |
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