CN210167264U - Full-film high-voltage pulse capacitor based on reliable connection of core and porcelain insulator lead - Google Patents

Abstract

The utility model provides a complete membrane high voltage pulse condenser based on core and vase lead wire are reliably connected, system has the flooding hole on the lateral wall of box upper end and sealed by flooding hole evacuation pouring impregnant and accomplish the vacuum impregnation of ware body, and a plurality of full mode structure's in the ware body are established ties through the lead terminal and are placed from top to bottom in proper order in the stack and form, are equipped with lead wire transition device on the core at upper and lower both ends of ware body and the core at upper and lower both ends of ware body is connected with the vase lead-out wire that locates the high-voltage terminal extraction pole and the low-voltage terminal extraction pole of box top respectively through lead wire transition device. The utility model discloses having avoided aluminium foil electrode and connection piece junction vibrations to drop and the virtual phenomenon that makes the early damage of condenser after connecing, generating heat effectively, the condenser that the core of full mode structure was made adopts the full membrane high voltage pulse capacitor of polypropylene film production manufacturing promptly, satisfies under the prerequisite that self-discharge time constant RC satisfied the requirement, has reduced manufacturing cost, and calorific capacity among the operation process reduces, has improved product quality.

Description

Full-film high-voltage pulse capacitor based on reliable connection of core and porcelain insulator lead

Technical Field

The utility model belongs to the technical field of the condenser, concretely relates to full membrane high voltage pulse condenser based on core and vase lead wire are reliably connected.

Background

The pulse capacitor belongs to a special capacitor, and can store the charging energy of a low-power supply to the capacitor in a longer time interval, and release the stored energy rapidly in a very short time interval at a required moment to form strong impact current and strong impact power. Therefore, the method has wide application in the fields of high voltage test technology, high energy physics, laser technology, geological prospecting and the like. At present, in pulse capacitor production process, when adopting oily membrane paper composite media or oily full membrane medium, no matter be oily membrane paper composite media or oily full membrane medium, there are two kinds of modes at the component system in-process, and one is the mode relatively old: a component-inserted lead sheet structure for electrically connecting the capacitor components in series and parallel; the other is an aluminum foil protruding noninductive structure which is used in a large amount in the process of rolling the parallel capacitor elements in recent years, and is also used for electrically connecting the capacitor elements in series and in parallel; the two modes are connected in series and parallel basically by adopting a connecting sheet, the core lead-out wire is led out by adopting the connecting sheet, and a soldering iron welding process, namely a solder soldering mode, is used for welding the raw material connecting sheet (the thickness is not less than 0.3-0.5 mm, the width is 24-30 mm) by using tin-lead solder HLSnPb60 and zinc-tin solder HLSnZn65 through electric soldering irons with different powers of 150-500W, and comprises the following specific steps: firstly, a square-head soldering iron is used for enameling a plane, HLSnZn65 zinc-tin solder is hot-melted on an aluminum foil on the end face of an element, the thickness is not less than 0.5mm, the width is 30mm, the speed is high in the process, the element is prevented from being scalded, after the whole platform of product is enameled with tin, a connecting sheet is placed, and then the connecting sheet and a zinc-tin layer are welded together by using a pointed soldering iron and tin-lead solder HLSnPb 60. To complete the operative connection of the component to the connecting pad. However, due to the particularity of the pulse capacitor, the connecting sheet is directly connected with the electrode face of the aluminum foil end of the element, so that the connection part of the aluminum foil electrode and the connecting sheet is vibrated and falls off to be in virtual connection and generate heat easily due to the action of electric force in the durability test and the using process, and the capacitor is damaged early.

At present, the power capacitor element adopts a non-inductive rolling technology, but the power capacitor element is not applied to a pulse capacitor, the self-discharge time constant RC of the pulse capacitor is required to be more than or equal to 1000, and the self-discharge time constant RC is irrelevant to the size of the capacitor and is only determined by the volume resistivity and the dielectric constant of a medium, so that the pulse capacitor needs a material with larger volume resistivity and dielectric constant value in the production and manufacturing process. Compared with a polypropylene film, the polyester film has larger volume resistivity and dielectric constant, can obtain larger self-discharge time constant value, but has large density, large loss and low electric strength, so that the pulse capacitor of the same type produced by adopting the polyester film or the polyester film plus capacitor paper has larger volume, heavier weight, higher corresponding production cost, transportation cost and installation cost, and larger loss, which can cause product heating in operation, easily cause thermal breakdown and seriously affect the service life of the product.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem: the utility model provides a full membrane high voltage pulse condenser based on core and vase lead wire are reliably connected, adopt lead wire transition device with the core at ware body upper and lower both ends respectively with the vase lead-out wire that the high-pressure terminal extraction pole at box top and low-pressure terminal extraction pole correspond and be connected, effectively avoided aluminium foil electrode and connection piece junction vibrations to drop and virtual joint, make the phenomenon of condenser early damage after generating heat, the condenser that the core of full mode structure was made, adopt the high polypropylene film production's that the electric strength is high full membrane high voltage pulse condenser promptly, under the prerequisite that satisfies self-discharge time constant RC and satisfy the requirement, manufacturing cost has been reduced, calorific capacity in the operation reduces, product quality has been improved.

The utility model adopts the technical proposal that: full membrane high voltage pulse condenser based on core and vase lead wire are reliably connected, including box, high-pressure end extraction pole, low pressure end extraction pole and establish the ware body in the box, the system has the flooding hole on the lateral wall of box upper end and accomplishes the vacuum impregnation of ware body after sealed by flooding hole evacuation injection maceration agent, the core of a plurality of full mode structures in the ware body is placed through the lead terminal series connection from top to bottom stack in proper order and is formed, the core that is equipped with lead wire transition device and ware body upper and lower both ends on the core at both ends about the ware body passes through lead wire transition device and is connected with the vase lead wire that high-pressure end extraction pole and low pressure end extraction pole that locate the box top correspond respectively.

The transformer body comprises a plurality of cores, an insulating base plate, a series section gasket and a II-type packaging piece, wherein the cores are connected in series through lead terminals and then are stacked on the insulating base plate, the series section gasket is arranged between the adjacent cores, and the II-type packaging piece encapsulates the cores and packs and shapes the cores through a plurality of hoops to form the transformer body.

Furthermore, the core is formed by connecting a plurality of elements which are stacked up and down in parallel through the protective sheet, the elements are formed by wrapping solid media, an upper electrode and a lower electrode by an noninductive winding method and then enveloping the solid media through an inter-element liner, wherein the upper electrode and the lower electrode are positioned between the upper solid media and the lower solid media, two layers or three layers of solid media are arranged between the upper electrode and the lower electrode, and the solid media are polypropylene films with high electric strength resistance.

Furthermore, the upper electrode consists of a solid medium and an aluminum foil electrode protruding from the left end face of the solid medium, and the lower electrode consists of a solid medium and an aluminum foil electrode protruding from the right end face of the solid medium.

Further, lead wire transition device includes insulation board I, insulation board II and connection piece, the system has the location slot hole on insulation board I and the insulation board II, connection piece one end is located between insulation board I and the insulation board II, the connection piece other end passes in proper order and lies in II outsides of insulation board and connection piece both ends with setting up after locating the slot hole on insulation board I and the insulation board II, lead wire transition device envelops on the core at both ends about the ware body, the welding of connection piece both ends has the soft stranded wire of soft stranded wire and connection piece one end to be connected with the lead-out wire of core, and the soft stranded wire of the connection piece other end passes through the spliced pole and is connected with.

Furthermore, the connecting sheet is a guide plate which is made of copper sheets and has the thickness of 3-5 mm.

The utility model has the advantages compared with the prior art:

1. the technical scheme adopts the full-film solid medium, namely the full-film high-voltage pulse capacitor produced and manufactured by adopting the polypropylene film with high electric strength resistance, reduces the manufacturing cost, reduces the heat productivity in the operation process and improves the product quality on the premise of meeting the requirement of the self-discharge time constant RC;

2. the element rolling in the technical scheme adopts a non-inductive rolling technology, so that fine burrs at the edge of an aluminum foil are improved, an uneven electric field at the edge of an aluminum foil electrode is reduced, the phenomenon of corona discharge is reduced, the electric strength and the product quality of a product are improved, and the inductance of a high-voltage pulse capacitor is reduced;

3. according to the technical scheme, the cores at the upper end and the lower end of the transformer body are respectively connected with the porcelain bottle outgoing lines corresponding to the high-voltage end outgoing electrode and the low-voltage end outgoing electrode at the top of the box body by adopting the lead transition device, so that the phenomenon that the capacitor is damaged in early stage after the connection part of the aluminum foil electrode and the connecting sheet is in virtual connection and heated due to vibration and falling off is effectively avoided after the connecting sheet is fixed, and the connection reliability is high;

4. the technical scheme has the advantages of simple structure, reasonable design, simple operation, easy grasp by workers, optimized quality of electrical connection and prolonged service life of products.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a front view of the structure of the body of the present invention;

fig. 3 is a side view of the structure of the body of the device of the present invention;

FIG. 4 is a schematic view of a non-inductive rolling structure of the device of the present invention;

FIG. 5 is a front view of the lead transition device of the present invention;

fig. 6 is a side view of the structure of the lead transition device of the present invention;

FIG. 7 is a schematic structural view of an insulating plate I of the present invention;

fig. 8 is a schematic structural diagram of the insulating plate ii of the present invention.

Detailed Description

An embodiment of the present invention will be described in conjunction with fig. 1-8, so that the technical solution will be described clearly and completely, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, not the whole embodiment.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The full-film high-voltage pulse capacitor based on reliable connection of the core and the porcelain bottle lead wire comprises a box body 1, a high-voltage end extraction electrode 2, a low-voltage end extraction electrode 3 and a device body 4 arranged in the box body 1, wherein a dipping hole 5 is formed in the side wall of the upper end of the box body 1, a dipping agent is pumped into the dipping hole 5 in a vacuum mode and sealed, then the vacuum dipping of the device body 4 is completed, a plurality of cores 6 of a full-mold structure in the device body 4 are sequentially stacked up and down after being connected in series through lead terminals, lead transition devices 7 are arranged on the cores 6 at the upper end and the lower end of the device body 4, and the cores 6 at the upper end and the lower end of the device body 4 are respectively connected with the porcelain bottle lead wires corresponding to the high-voltage end extraction electrode 2 and the low; specifically, the transformer body 4 comprises a plurality of cores 6, an insulating base plate 4-1, a series section gasket 4-2 and a II-type packaging piece 4-3, the cores 6 are connected in series through lead terminals and then are stacked on the insulating base plate 4-1, the series section gasket 4-2 is arranged between the adjacent cores 6, and the II-type packaging piece 4-3 encapsulates the cores 6 and packs and shapes the cores 6 through a plurality of tightening hoops 4-4 to form the transformer body 4; specifically, the core 6 is formed by connecting a plurality of elements 6-1 which are stacked up and down in parallel through a protective sheet, the elements 6-1 are formed by wrapping solid media 6-1-1, upper electrodes 6-1-2 and lower electrodes 6-1-3 by a non-inductive winding method and then packaging the solid media by an inter-element gasket 6-2, wherein the upper electrodes 6-1-2 and the lower electrodes 6-1-3 are positioned between the upper solid media 6-1-1 and the lower solid media 6-1-1, two layers or three layers of solid media 6-1-1 are arranged between the upper electrodes 6-1-2 and the lower electrodes 6-1-3, and the solid media 6-1-1 are polypropylene films with high electric strength; specifically, the upper electrode 6-1-2 consists of a solid medium 6-1-1 and an aluminum foil electrode 6-1-4 protruding out of the left end face of the solid medium 6-1-1, and the lower electrode 6-1-3 consists of a solid medium 6-1-1 and an aluminum foil electrode 6-1-4 protruding out of the right end face of the solid medium 6-1-1; specifically, the lead transition device 7 comprises an insulation board I7-1, an insulation board II 7-2 and a connecting piece 7-3, wherein the insulation board I7-1 and the insulation board II 7-2 are provided with positioning long holes 7-4, one end of the connecting piece 7-3 is positioned between the insulation board I7-1 and the insulation board II 7-2, the other end of the connecting piece 7-3 sequentially penetrates through the long holes 7-4 on the insulation board I7-1 and the insulation board II 7-2 and then is positioned at the outer side of the insulation board II 7-2, the two ends of the connecting piece 7-3 are arranged at the same end, the lead transition device 7 is enveloped on cores 6 at the upper end and the lower end of the body 4, soft stranded wires 7-5 are welded at the two ends of the connecting piece 7-3, and the soft stranded wires 7-5 at one end of the connecting piece, the flexible stranded wire 7-5 at the other end of the connecting sheet 7-3 is connected with an outgoing line at the lower end of the porcelain bottle through a connecting column; specifically, the connecting sheet 7-3 is a 4mm guide plate made of copper sheets.

The lead terminal in the above structure is the connection body i in the patent document with the application number of cn201821760170.x, and the connection column is the connection body ii in the patent document

As shown in figure 1, the box body 1 in the structure is formed by argon arc welding of a box cover, a box wall, a box bottom and a lifting bar 8, the box wall is provided with a dipping hole 5, and the structure is specifically manufactured by the following steps:

①, respectively manufacturing a box bottom, a box wall, an oil immersion hole 5, a box cover and a lifting flap 8, ② welding the box bottom, the box wall and the lifting flap 8 into a uncovered box body 1 by argon arc, polishing and ultrasonically cleaning the inside, ③ welding a high-pressure end leading-out electrode 2, a low-pressure end leading-out electrode 3 and the box cover into a cover assembly by argon arc, ④ placing a body 4 into the uncovered box body 1, ⑤ placing the cover assembly on the uncovered box body 1, clamping a lead at the lower end of the cover assembly with a leading-out wire of the body 4 and performing insulation treatment by an insulating tube, ⑥ welding the box cover with the upper end of the uncovered box body 1 by argon arc to form a sealed box body 1, vacuumizing and oiling ⑦ integrally through the immersion hole 5, and ⑧ sealing the immersion hole 4;

the manufacturing process of the transformer body 4 is shown in fig. 2-3, the core 6 is formed by pressing and packing a plurality of elements 6-1, an insulating bottom plate 4-1, a series section gasket 4-2 and a II-type packaging piece 4-3 through a tightening hoop 4-4, wherein the elements 6-1 are formed by rolling paper of a solid medium 6-1-1, an upper electrode 6-1-2 and a lower electrode 6-1-3 by a non-inductive rolling method, and adjacent elements 6-1 are connected in parallel through a protective sheet.

The manufacturing method of the body 4 comprises the steps of ① rolling a solid medium 6-1-1, an upper electrode 6-1-2 and a lower electrode 6-1-3 by a non-inductive rolling method, ② rolling the solid medium and wrapping the solid medium by an inter-element gasket 6-2 to form an element 6-1, ③ connecting adjacent elements 6-1 which are arranged in an up-and-down overlapping mode in parallel through a protective sheet by an ultrasonic welding machine to form a core 6, ④ placing a series section gasket 4-2 between the adjacent cores 6, placing the cores 6 which are arranged in an up-and-down overlapping mode on an insulating bottom plate 4-1, packaging and shaping the core by a II-shaped packaging piece 4-3 through a clamping hoop 4-4, ⑤ connecting semi-finished products made in the step ④ in series through a lead terminal, wherein the aluminum foil electrodes 6-1-3 protruding from the elements 6-1 in the core 6 are fixed on the inner side plate surface of an L-shaped clamping plate of a lead terminal (namely a connecting body I), the core 6 is fixed in a cylindrical round tube by clamping the lead terminal, ⑥ integrally wrapping the insulating body I to form an insulating body I

As shown in FIG. 4, the solid medium 6-1-1, the upper electrode 6-1-2 and the lower electrode 6-1-3 are wrapped by the inter-element liner 6-2 after being rolled by a non-inductive rolling method, wherein the left end surface of the upper electrode 6-1-2 protrudes out of the left end surface of the solid medium 6-1-1, the right end surface is folded and hidden in the solid medium 6-1-1, the right end surface of the lower electrode 6-1-3 protrudes out of the right end surface of the solid medium 6-1-1, and the left end surface is folded and hidden in the solid medium 6-1-1.

As shown in figures 5-8, the lead transition device 7 is manufactured by the steps of ① making long holes 7-4 in an insulating board I7-1 and an insulating board II 7-2 according to drawing requirements, ② cutting the length of a connecting piece 7-3 according to the drawing requirements, ③ arranging one end of the connecting piece 7-3 between the insulating board I7-1 and the insulating board II 7-2, arranging the other end of the connecting piece 7-3 at the same end as one end of the connecting piece 7-3 after sequentially making long holes 7-4 in the upper part and the middle part of the insulating board I7-1 and long holes 7-4 in the middle part of the insulating board II 7-2, and separating two ends of the connecting piece 7-3 by the insulating board II 7-2, ④ welding soft stranded wires 7-5 at two ends of the connecting piece 7-3 as shown in figure 6, placing the lead transition piece on a core 6 at two ends of a body 4 for integral press mounting, after press mounting, connecting the soft stranded wires 7-5 at one end of the connecting piece 7-3 with an outgoing line II of an adjacent core 6 through a connecting post (namely a connecting body of a tubular structure) after completing primary encapsulation and external press mounting of a lead, connecting the lead 7-3, connecting the lead transition and connecting piece 7 and connecting the lead of a lead wire of a ceramic bottle, and connecting piece II-3, and connecting the lead wire, and the lead wire of the ceramic bottle, and the ceramic bottle are connected to the ceramic bottle after the ceramic bottle, and the ceramic bottle is connected to avoid the ceramic.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the present invention, so that all equivalent changes made by the contents of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims (6)

1. Full membrane high voltage pulse condenser based on core and vase lead wire are reliably connected, draw forth utmost point (2), low pressure end including box (1), high-pressure terminal, draw forth utmost point (3) and establish ware body (4) in box (1), the system has on the lateral wall of box (1) upper end impregnation hole (5) and accomplishes the vacuum impregnation of ware body (4) after pouring into the impregnant by impregnation hole (5) evacuation and seal, its characterized in that: the core (6) of a plurality of full-mold structures in the body (4) is sequentially stacked up and down after being connected in series through the lead terminals to form the core, the core (6) at the upper end and the lower end of the body (4) is provided with a lead transition device (7), and the core (6) at the upper end and the lower end of the body (4) is respectively connected with porcelain bottle outgoing lines corresponding to a high-voltage end outgoing electrode (2) and a low-voltage end outgoing electrode (3) which are arranged at the top of the box body (1) through the lead transition device (7).

2. The full-film high-voltage pulse capacitor based on reliable connection of the core and the porcelain insulator lead wire as claimed in claim 1, is characterized in that: the transformer body (4) comprises a plurality of cores (6), an insulating base plate (4-1), a series section gasket (4-2) and a II-type packaging piece (4-3), the cores (6) are connected in series through lead terminals and then are placed on the insulating base plate (4-1) in an overlapping mode, the series section gasket (4-2) is arranged between the adjacent cores (6), and the II-type packaging piece (4-3) encapsulates the cores (6) and packs and shapes the cores through a plurality of hoops (4-4) to form the transformer body (4).

3. The full-film high-voltage pulse capacitor based on reliable connection of the core and the porcelain insulator lead wire according to claim 1 or 2, is characterized in that: the core (6) is formed by connecting a plurality of elements (6-1) which are stacked up and down in parallel through a protective sheet, the element (6-1) is formed by wrapping a solid medium (6-1-1), an upper electrode (6-1-2) and a lower electrode (6-1-3) by adopting a non-inductive winding method and then by an inter-element gasket (6-2), the upper electrode (6-1-2) and the lower electrode (6-1-3) are positioned between the upper solid medium (6-1-1) and the lower solid medium (6-1-1), two layers or three layers of solid media (6-1-1) are arranged between the upper electrode (6-1-2) and the lower electrode (6-1-3), and the solid media (6-1-1) are polypropylene films with high electric strength.

4. The full-film high-voltage pulse capacitor based on reliable connection of the core and the porcelain insulator lead wire as claimed in claim 3, is characterized in that: the upper electrode (6-1-2) consists of a solid medium (6-1-1) and an aluminum foil electrode (6-1-4) protruding out of the left end face of the solid medium (6-1-1), and the lower electrode (6-1-3) consists of the solid medium (6-1-1) and an aluminum foil electrode (6-1-4) protruding out of the right end face of the solid medium (6-1-1).

5. The full-film high-voltage pulse capacitor based on reliable connection of the core and the porcelain insulator lead wire as claimed in claim 1, is characterized in that: the lead transition device (7) comprises an insulation board I (7-1), an insulation board II (7-2) and a connecting piece (7-3), wherein positioning long holes (7-4) are formed in the insulation board I (7-1) and the insulation board II (7-2), one end of the connecting piece (7-3) is located between the insulation board I (7-1) and the insulation board II (7-2), the other end of the connecting piece (7-3) sequentially penetrates through the long holes (7-4) formed in the insulation board I (7-1) and the insulation board II (7-2) and then is located on the outer side of the insulation board II (7-2), two ends of the connecting piece (7-3) are arranged at the same end, the lead transition device (7) is wrapped on cores (6) at the upper end and the lower end of a transformer body (4), and soft stranded wires (7-5) and a connecting piece (7-3) are welded at two ends of the connecting The flexible stranded wire (7-5) at one end is connected with the outgoing line of the core (6), and the flexible stranded wire (7-5) at the other end of the connecting sheet (7-3) is connected with the outgoing line at the lower end of the porcelain bottle through the connecting column.

6. The full-film high-voltage pulse capacitor based on reliable connection of the core and the porcelain insulator lead wire as claimed in claim 5, is characterized in that: the connecting sheet (7-3) is a guide plate with the thickness of 3-5mm and made of copper sheets.

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