CN216436625U - Partition plate flange for gas insulated high-voltage electrical appliance - Google Patents

Abstract

The application provides a baffle flange for gas-insulated high-voltage electrical apparatus. This application directly utilizes in the milling cutter tool bit stretches into the baffle flange, and both ends cut out a plurality of arc recesses as the spacing groove around its inner peripheral face, and the axial displacement of insulating medium and axial rotation in the restriction baffle flange. From this, during this application accessible ordinary milling cutter directly stretched into the baffle flange with the blade lateral part, the baffle flange of the less internal diameter size of processing reduces the restriction to baffle flange processing cutter. And, this application still can directly hold insulating medium through the spacing groove of baffle flange front and back terminal surface arc structure, and restriction insulating medium and central inserts rotate in baffle flange is inside, and the spacing groove through both ends limits insulating medium and central inserts jointly around the baffle flange axial activity, consequently, can effectively guarantee the insulating effect of keeping apart to central inserts to guarantee that high voltage component can the steady operation in the gas insulated high voltage apparatus.

Description

Partition plate flange for gas insulated high-voltage electrical appliance

Technical Field

The application relates to the field of high-voltage electrical equipment, in particular to a partition plate flange for a gas-insulated high-voltage electrical appliance.

Background

The high-voltage components of the gas-insulated high-voltage electrical apparatus need to be supported inside the housing by a partition in a manner similar to that shown in fig. 1. The partition is made of an insulating material, and has an outer edge in contact with the housing and a middle portion in contact with the high-voltage element. Generally, to ensure the insulation performance, the relative displacement between the housing and the high voltage component should be as small as possible. The positional relationship among the high voltage conductor, the housing and the partition is shown in fig. 1.

The separator generally consists of three parts: the baffle plate comprises a central insert positioned in the baffle plate, an insulating medium surrounding the periphery of the central insert and a baffle plate flange fixedly supported on the periphery of the insulating medium. The central insert and the partition flange are usually made of metal, and the main component of the insulating medium is an epoxy resin material. The three components are cast and molded to form a whole. Because the epoxy resin has certain contractibility in the process of casting molding, the molded epoxy resin can be bonded with the central insert, a small gap can be generated between an insulating medium of the epoxy resin and the inner surface of the partition plate flange due to material contraction, the small gap can cause the freedom degree of relative movement between the epoxy resin and the flange, and the relative position relation between the shell and the central insert is influenced.

In order to limit the radial or axial relative movement of the insulating medium of the epoxy resin relative to the flange, an annular groove is usually designed in the middle of an inner ring of a partition plate flange in the prior art, and the annular groove is used for realizing the clamping connection with the insulating medium; in order to limit the degree of freedom of the epoxy resin insulation medium rotating along the circumference of the flange, in the prior art, a plurality of rectangular grooves are further formed in the bottom of the annular groove through a milling cutter, and the periphery of the insulation medium is clamped and fixed through the rectangular grooves. Therefore, after casting molding, the annular groove and the rectangular groove at the bottom of the annular groove are filled with epoxy resin to form the annular bulge and the rectangular bulges which are structurally matched with the annular bulge and the rectangular bulges. The grooves on the inner side of the partition plate flange are matched with the protrusions on the outer side of the epoxy resin insulating medium, so that the epoxy resin and the flange are limited to generate small-sized relative displacement and rotation.

In the prior art, when machining each groove inside a partition flange, the common steps are as follows:

firstly, the annular groove is processed and formed along the axial direction by using a boring cutter, then a milling cutter and a cutter holder thereof extend into the flange, and a rectangular groove is further processed and formed at the bottom of the annular groove along the radial direction.

However, for the partition board with a smaller flange diameter, the common milling cutter and the clamp thereof cannot enter the flange to perform rectangular groove processing. Thus, the existing rectangular groove design increases the difficulty of manufacturing and machining and requires the use of more elaborate and miniaturized milling cutter heads.

SUMMERY OF THE UTILITY MODEL

This application is to prior art not enough, a baffle flange for gas insulation high-voltage apparatus is provided, this application utilizes conventional size's milling cutter to stretch into baffle flange internal periphery along the axial, both ends lateral wall directly cuts respectively and forms front end spacing groove and rear end spacing groove around baffle flange inner peripheral surface, connect the terminal surface edge of insulating medium through this spacing groove, it is spacing to provide circumference and axial simultaneously, simplify baffle flange processing technology, reduce the requirement of small-size baffle flange to processing tool bit and tool bit anchor clamps size. The technical scheme is specifically adopted in the application.

First, in order to achieve the above object, there is provided a separator flange for a gas insulated high voltage electrical apparatus, comprising: a front end limiting groove arranged at the front end of the inner peripheral surface of the partition plate flange; a rear end limiting groove which is arranged at the rear end of the inner peripheral surface of the partition plate flange; the front end limiting grooves and the rear end limiting grooves are arranged in a staggered mode.

Optionally, the partition flange for a gas-insulated high-voltage electrical apparatus as described in any one of the above paragraphs, wherein the bottoms of the front end limiting groove and the rear end limiting groove are both arc-shaped, and the front end limiting groove and the rear end limiting groove are both formed by recessing the inner peripheral edge of the partition flange and are circumferentially spaced along the inner peripheral edge.

Optionally, the partition flange for a gas-insulated high-voltage electrical apparatus as described above, wherein the front end limiting groove and the rear end limiting groove are respectively distributed at equal intervals along the front side end face and the rear side end face of the inner periphery of the partition flange; and the radiuses of the front end limiting groove and the rear end limiting groove are smaller than the inner circumference radius of the partition plate flange.

Optionally, the partition flange for a gas-insulated high-voltage electrical apparatus as described in any one of the above, wherein the thickness of the front end limiting groove and the thickness of the rear end limiting groove do not exceed 1/2 of the thickness of the partition flange; the middle position of the inner peripheral surface of the partition plate flange is provided with S-shaped limiting bosses which are connected end to end and are uniformly distributed by the inner recesses of the front end limiting groove and the rear end limiting groove, the S-shaped limiting bosses are abutted against the insulating casting part to limit the insulating casting part to slide along the axial direction of the partition plate flange, and the insulating casting part is limited to rotate along the circumferential direction of the partition plate flange at the same time.

Optionally, the separator flange for a gas insulated high-voltage electric apparatus as recited in any one of the above, wherein the front end limiting groove is formed by cutting an inner peripheral edge of the separator flange along a front side of the separator flange by a milling cutter; the rear end restriction groove is formed by cutting an inner peripheral edge of the partition flange along a rear side of the partition flange by a milling cutter.

Optionally, the partition flange for a gas-insulated high-voltage electrical apparatus as described in any one of the above paragraphs, wherein the inside of the front end limiting groove and the back end limiting groove are respectively connected with an insulating medium and a central insert, wherein the peripheral edge of the insulating medium is respectively embedded into the front end limiting groove and the back end limiting groove at the same time, and the central insert is fixed inside the insulating medium.

Optionally, the partition flange for a gas insulated high-voltage electrical apparatus as described in any one of the above, wherein the front end limiting groove and the rear end limiting groove have the same size.

Optionally, the partition flange for a gas-insulated high-voltage electrical apparatus as described in any one of the above, wherein the front-end limiting groove includes 4 grooves uniformly arranged along an inner circumference of the partition flange; the rear end limiting grooves are uniformly arranged between the two adjacent front end limiting grooves along the rear side edge of the inner periphery of the partition plate flange.

Optionally, the partition flange for a gas-insulated high-voltage electrical apparatus as described in any one of the above, wherein the preset distances between two adjacent front end limiting grooves and two adjacent rear end limiting grooves are equal.

Optionally, the partition flange for a gas insulated high-voltage electric apparatus as described in any one of the above, wherein the front end limiting groove and the rear end limiting groove are each formed by cutting with a milling cutter in a transverse direction along an inner peripheral edge of the partition flange.

Meanwhile, in order to achieve the above object, the present application also provides a method for processing a separator flange for a gas insulated high voltage apparatus, comprising the steps of: extending a milling cutter into the inner periphery of the partition plate flange from the front side, and directly cutting along the front end of the inner periphery of the partition plate flange to form a plurality of front end limiting grooves; extending a milling cutter into the inner periphery of the partition plate flange from the rear side, and directly cutting along the rear end of the inner periphery of the partition plate flange to form a plurality of rear end limiting grooves; the front end limiting grooves and the rear end limiting grooves are arranged in a staggered mode.

Optionally, the method for processing a partition flange for a gas insulated high-voltage apparatus as described in any one of the above, wherein the cutter holder of the milling cutter is located outside the partition flange during the cutting process.

Optionally, in the method for processing a partition flange for a gas insulated high-voltage apparatus, when the front end limiting groove or the rear end limiting groove is processed, the milling cutter rotates along the inner circumference of the partition flange to cut the edge of the inner circumference of the partition flange, and the arc-shaped inner walls of the front end limiting groove or the rear end limiting groove are alternately formed.

Optionally, in the method for processing a partition flange for a gas insulated high-voltage electrical apparatus, a distance that the milling cutter head extends into an inner circumference of the partition flange during the cutting process is not more than half of a width of the inner circumference of the partition flange.

Advantageous effects

This application directly utilizes milling cutter transversely to stagger at both ends around the baffle flange inner peripheral surface and cuts out a plurality of arc recesses as the spacing groove, and the axial displacement of insulating medium and axial rotation in the restriction baffle flange. From this, this application can use ordinary milling cutter, directly stretches into the blade in the baffle flange, and the baffle flange of the less internal diameter size of processing reduces the restriction to baffle flange processing cutter. And, this application still can directly hold insulating medium through the spacing groove of baffle flange front and back terminal surface arc structure, and restriction insulating medium and central inserts rotate in baffle flange is inside, and the spacing groove through front and back both ends butts insulating medium's connection terminal surface respectively, restriction insulating medium and central inserts are along baffle flange axial back and forth activity. Therefore, the insulating isolation effect of the central insert can be effectively guaranteed, and stable operation of high-voltage elements in the gas-insulated high-voltage electrical appliance can be guaranteed.

According to the limiting groove, the arc-shaped groove is directly cut at the outer side edge of the inner peripheral surface of the partition plate flange along the front end surface and the rear end surface of the partition plate flange through the milling cutter to form a step as the inner side of the limiting groove and the inner wall of the partition plate flange, and the adjacent front limiting groove and the adjacent rear limiting groove which are arranged in a staggered mode form S-shaped limiting bosses which are evenly distributed in an end-to-end mode on the inner peripheral surface of the partition plate flange. Therefore, in the process of pouring the insulating medium, the outer edge of the insulating medium can enter the limiting grooves at the front end and the rear end of the partition plate flange and is abutted against the side wall of the S-shaped limiting boss through the middle part of the outer peripheral surface of the insulating medium, annular grooves formed at the front side and the rear side of the partition plate flange are filled, an outer edge protruding structure attached to the S-shaped limiting boss between the arc-shaped grooves is formed in the middle of the outer periphery of the insulating medium, clamping is achieved in the circumferential direction of the insulating medium, and the insulating medium is limited to move back and forth along the axial direction of the partition plate flange through blocking of the S-shaped limiting boss. After the forming, the front side and the rear side of the S-shaped limiting boss in the middle of the inner peripheral surface of the partition plate flange are surrounded by the insulating medium along the circumferential direction, so that the insulating medium is limited to move back and forth along the axial direction of the partition plate flange, and the insulating medium is limited to rotate relative to the partition plate flange through the bending angle of the boss. Therefore, the baffle plate flange is stably connected between the connecting end surfaces of the front shell and the rear shell 3 through the fixed connecting parts such as screws, bolts and the like, so that the center insert in the shell can be fixed, and the front and rear movement or the left and right rotation of the center insert relative to the high-pressure element in the shell is effectively limited.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application.

Drawings

The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application and not limit the application. In the drawings:

FIG. 1 is a schematic view of a flange for a gas insulated high voltage device and a connection method between the flange and a high voltage device

FIG. 2 is a schematic view of a prior art diaphragm flange for a gas insulated high voltage electrical apparatus;

FIG. 3 is a schematic view of a separator flange for a gas insulated high voltage electrical apparatus provided herein;

fig. 4 is a schematic view of an insulation basin structure for a gas insulated high voltage apparatus formed by the partition flange provided in the present application.

In the drawings, 1 denotes a separator; 2 denotes a high voltage element; 3 represents a housing; 11 denotes a partition flange; 12 denotes an insulating medium; 13 denotes a central insert; 101 denotes a flange accommodating chamber; 102 denotes a rectangular groove; 4, a milling cutter; 5 a disc cutter; 131 denotes a front end limiting groove; and 132, a rear end limiting groove.

Detailed Description

In order to make the purpose and technical solutions of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The meaning of "and/or" as used herein is intended to include both the individual components or both.

The meaning of "inside and outside" in the application means that the direction pointing to the central insert arranged inside the partition plate flange is inside, and vice versa, relative to the partition plate flange per se; and not as a specific limitation on the mechanism of the device of the present application.

The meaning of "front and back" in this application means that when the user is facing the direction of the recess of the insulating medium, the direction close to the user is front, and the direction close to the central insert at the bottom of the insulating medium is back, not the specific limitation of the mechanism of the device of this application.

The term "connected" as used herein may mean either a direct connection between components or an indirect connection between components via other components.

The terms "up, down, left, and right" as used herein refer to the user's top being up, the user's bottom being down, the user's left being left, the user's right being right, when the user is facing the direction of the depression of the insulating medium, rather than the specific limitations on the mechanism of the device of the present application.

The application provides a baffle flange 11 for gas-insulated high-voltage electrical apparatus, it is with the mode of fig. 1, set up between the connection terminal surface of two shells 3 in the front and back for connect the insulating medium 12 of fixed center inserts 13 in the shell, the connection terminal surface of cooperation shell restricts insulating medium jointly and removes, thereby guarantee to be connected steadily between center inserts 13 and the high-voltage component 2, guarantee the insulating isolation effect of insulating medium to center inserts, guarantee that the high-voltage component can the steady operation in the gas-insulated high-voltage electrical apparatus.

Referring to fig. 4, the spacer flange 11 provided in the present application may be integrally formed with the insulating medium by casting. The insulating medium 12 is shaped by a casting mold and forms a basin body which is sunken backwards, and a central insert 13 is embedded in the bottom formed by the basin body sunken part. Therefore, the insulating medium is fixedly connected between the partition flange and the central insert to form a complete partition structure. The baffle plate structure is fixedly connected with a flange connecting part arranged on the end surface of the shell 3 through a baffle plate flange on the periphery, and the central insert is limited in a cavity formed between the front shell and the rear shell, so that the central insert can be respectively and electrically connected with two high-voltage elements in the front shell and the rear shell through the front end surface and the rear end surface of the central insert to form an electric path between the high-voltage elements, and the effective transmission of a high-voltage electric signal is realized in a gas insulation environment formed by sealing the shells. The insulating medium can provide insulating isolation protection for the high-voltage element, and the reliable operation of the whole gas-insulated high-voltage electrical appliance is guaranteed.

Since the insulating medium such as epoxy resin has a certain shrinkage property during the casting molding process, the molded epoxy resin can be completely and firmly bonded with the central insert, but the epoxy resin on the periphery of the separator and the inner surface of the flange of the separator usually generate a tiny gap due to material shrinkage.

In order to limit the freedom degree of relative movement between the insulating medium and the flange partition plate caused by the tiny gap as much as possible and avoid the influence on the insulating performance of a high-voltage element in the shell due to the fact that the insulating medium moves back and forth or rotates relative to the partition plate flange, therefore, the milling cutter 4 can extend into the inner periphery of the partition plate flange from the front side firstly, a plurality of front end limiting grooves 131 are formed by directly cutting the front end of the inner periphery of the partition plate flange, the rotation of the front end limiting grooves is limited by the fact that the bottoms of the front end limiting grooves abut against the peripheral edge of the insulating medium, the rear end face formed by cutting the front end limiting grooves limits the insulating medium to move backwards along the axial direction, and the axial limiting of the insulating medium is achieved; then, the milling cutter 4 can further extend into the inner periphery of the partition plate flange from the rear side, a plurality of rear end limiting grooves 132 are formed by directly cutting along the rear end of the inner periphery of the partition plate flange, the rotation of the insulating medium is limited by clamping the periphery of the insulating medium at the bottom of each rear end limiting groove, the insulating medium is limited by the front end face formed by cutting the rear end limiting grooves to move forwards along the axial direction, and the axial movement of the insulating medium is limited.

Because horizontal milling cutter 4 who stretches into inside baffle flange in this application, the anchor clamps of its fixed blade need not to stretch into baffle flange inner circle, only can realize the cutting to the interior week outside edge of baffle flange by motor drive through the blade side, inside front end spacing groove and the rear end spacing groove of digging out of the front and back terminal surface of baffle flange, the realization is to the cutting operation of work piece, consequently, the baffle flange structure that this application provided need not to reserve great stroke space in flange center through-hole position and supplies the reciprocal operation of going on from top to bottom of tool bit. The utility model provides a baffle flange structure, its radius as long as guarantee the cutting tool bit is no longer than the interior circumference radius of baffle flange, can realize the processing to the interior circumference of baffle flange. Therefore, for the baffle flange with a smaller diameter, the common milling cutter with a thinner cutter head is only needed to be selected according to the inner diameter of the flange, and the cutting processing of the inner periphery of the flange structure can be realized by matching with a universal milling cutter clamp. The processing depth and the cutting range of the milling cutter can be adjusted correspondingly according to the specific size of the inner peripheral surface of the partition plate flange. Therefore, arc-shaped grooves with different radians can be formed in the baffle flanges with different sizes in a staggered mode along the edges of the front end face and the rear end face of the inner periphery of the baffle flanges with different sizes according to the sizes of the baffle flanges to serve as a front limiting groove and a rear limiting groove, and clamping fixation in the circumferential direction of an insulating medium and limitation on axial sequential displacement of the insulating medium are achieved.

Therefore, the diameter of the milling cutter body can be selected according to the inner diameter of the partition plate flange, the milling cutter tool with the slender milling cutter body is selected to cut to form the size matched with the partition plate flange, the front end limit groove and the rear end limit groove which are arranged in a staggered mode, the milling cutter with the existing smaller tool bit is directly utilized to be matched with the universal milling cutter fixture to at least achieve cutting processing of the inner periphery of the partition plate flange with the inner diameter of about 100mm, and the processing size is far smaller than the processing diameter requirement that the milling cutter is not lower than 300mm under the vertical processing mode shown in the existing figure 2. Compared with the existing mode of vertically processing through a milling cutter, the horizontal cutter mode has the advantages that the limitation on the size of the cutter head and the size of the clamp is smaller, and therefore the cutting limiting effect similar to that of the cutter head of the inlet micro milling cutter can be achieved by simply selecting the existing cutter with the smaller size. The front limiting groove and the rear limiting groove are formed by inwards concave inner peripheral surface edges of the partition plate flanges and are distributed at intervals along the circumferential direction of the inner peripheral surface, the arc bottom surfaces of the front limiting groove and the rear limiting groove are smoothly transited to the inner periphery of the partition plate flanges, and a certain included angle is formed between the arc bottom of the limiting groove and the inner periphery of the partition plate flanges, so that the arc-shaped limiting grooves can realize limiting clamping on arc-shaped outer edge protruding structures formed by embedding the peripheries of the front end and the rear end of the insulating medium into the limiting grooves by means of the radial depth of the limiting groove and the included angle of the edge connecting positions, the arc-shaped limiting grooves abut against the arc-shaped outer edge protruding structures of the insulating medium, the limitation on the peripheral rotating direction of the insulating medium is realized, and the positioning effect same as that the rectangular groove 102 is arranged in the center of the flange plate is realized.

In order to ensure that the whole stress of the insulating medium is uniform and the rotation and the deviation of the insulating medium in all directions can be effectively limited by the groove structures, it is preferable that the arc-shaped groove structures are further uniformly distributed along the front and rear end faces of the inner peripheral edge of the partition flange and limit the front end limiting groove 131 and the rear end limiting groove 132 to have the same size. Therefore, once the insulating medium is subjected to relative displacement or relative rotation, the peripheral direction of the insulating medium can be uniformly stressed to resist and prevent the insulating medium from being separated from the original fixed position, and the insulating medium is effectively prevented from being deformed or damaged due to the fact that the insulating medium bears overlarge stress in a single direction.

Referring to the left side of fig. 3, the inner peripheral surface formed from the front and rear side edges of the inner periphery of the separator flange to the middle of the inner periphery of the separator flange can be cut in the transverse direction by selecting a milling cutter with a smaller diameter to match the inner diameter of the separator flange. The included angle formed by the connecting positions of the edges of the two grooves can be increased by arranging the milling cutter along the cutting depth of the inner periphery of the partition plate flange, and the limiting effect on the insulating medium is enhanced. Generally, the radius of the arc-shaped groove formed by the front and rear limiting grooves at least needs to be set to be smaller than the inner diameter corresponding to the inner peripheral surface of the partition plate flange, so that discontinuous abutting included angles are formed on the front and rear side end faces of the inner periphery of the partition plate flange, limiting abutting of an insulating medium in the cavity is achieved, and the insulating medium is prevented from sliding along the cavity.

The preceding, back spacing groove for avoiding the arc bottom is seted up and is influenced baffle flange structural strength deeply, consequently, generally set up the arc recess in this application and do not exceed the radial half of thickness of baffle flange itself along the radial depth of cut of the internal week of baffle, set up the arc recess and generally do not exceed the half of the internal week axial depth of baffle flange along axial fluting thickness to, front end spacing groove 131 and rear end spacing groove 132 are respectively along the internal week of baffle flange with equidistant interval distribution. That is, the depth of the deepest position of the inner peripheral groove of the partition flange on the left side in fig. 3 is generally not more than 1/2 of the original thickness of the partition flange, and a partition flange structure with enough thickness is reserved between the limiting grooves at the front end and the rear end, so that S-shaped limiting bosses which are evenly distributed end to end can be formed on the inner peripheral surface of the partition flange, and the S-shaped limiting bosses can abut against the front end surface and the rear end surface of the arc-shaped outer edge protruding structure at the edge of the insulating medium to limit the axial sliding of the insulating casting along the partition flange, and simultaneously limit the circumferential rotation of the insulating casting along the partition flange, thereby ensuring the limitation of the internal insulating medium. In addition, the edge of the insulating medium is matched with the front limiting groove and the rear limiting groove which are uniformly staggered, and the arc-shaped outer edge protruding structure formed by the front end surface and the rear end surface of the edge can also increase the mechanical strength of the stressed part of the insulating medium, so that the stressed deformation and the separation from the original position of the stressed part of the insulating medium are avoided in the process of limiting the movement of the central insert.

In general, the specific opening positions of the limiting grooves on the front side and the rear side can be arbitrarily selected on the front side and the rear side in the circumferential direction of the partition plate flange. However, in consideration of the stress state of the insulating medium, in order to keep the stress balance of the insulating medium inside the partition plate flange as much as possible and avoid the tendency of axial deflection of the partition plate flange caused by unbalanced external stress, in an optimal implementation mode, the front and rear limiting grooves with the arc-shaped structures can be symmetrically arranged at 4 positions symmetrically arranged in four quadrants of the circumferential direction of the partition plate flange in a manner of fig. 3, and are arranged, and all the arc-shaped grooves are located in the same radial plane and extend from the middle part of the partition plate flange to the end faces of the front side and the rear side of the partition plate flange. Therefore, stress borne by the shell 3 or the central insert can be uniformly applied to the partition plate flange and the insulating medium through the front and rear groups of completely symmetrical arc-shaped grooves, so that the connection limiting structure is guaranteed to be uniformly stressed as much as possible, and deflection caused by unbalanced stress is avoided.

Similar with above-mentioned structure, 8 spacing recesses around baffle flange circumference four-quadrant can also evenly arrange at the inner periphery of baffle flange in crisscross mode, all have equal default distance and form 45 contained angles along the baffle flange inner periphery between adjacent front end spacing groove 131 and the rear end spacing groove 132 at intervals. The arc groove structure is completely filled during pouring of the insulating medium, the connecting structure which is arranged in a staggered mode in the front and back direction is formed, and the connecting structure is completely clamped between the front end face and the back end face of the S-shaped limiting boss, so that more uniform stress distribution can be provided, and the phenomenon that the limiting effect is lost due to the fact that the edge of the insulating medium is abutted to the outer edge of the single arc-shaped edge protruding structure of the accommodating cavity 122 and is subjected to excessive stress deformation and breakage is avoided.

In conclusion, this application forms front end spacing groove 131 and rear end spacing groove 132 cloth through inside two sets of arc groove structure in front and back of baffle flange, holds and solidification connection insulating medium through two sets of spacing grooves in the pouring process to through insulating medium fixed center inserts. This application accessible pouring mode sets up the peripheral edge embedding of insulating medium between the spacing boss of the end to end evenly distributed' S of the interior week of baffle flange formed, utilizes the front and back spacing groove to restrict insulating medium and inside fixed central inserts that bonds along baffle flange circumferential direction and along baffle flange axial displacement simultaneously. The front and rear limiting grooves are simple in structure, can be formed by transversely cutting the side wall of the milling cutter directly, and are easy to machine and manufacture. In the cutting process, the cutter head clamp of the milling cutter is positioned outside the partition plate flange, so that the requirement on the size of the inner circumference radius of the partition plate flange is smaller, and the processing requirement of the partition plate flange with smaller diameter can be met by matching an ordinary processing machine tool and a conventional milling cutter clamp with the existing milling cutter body with smaller radius.

This application is at baffle flange inner periphery front and back both sides edge along the inner peripheral surface edge of baffle flange axial level cutting baffle flange, it has the preceding of arc inner wall to stagger out, back spacing groove, set up central inserts in baffle flange inboard, it is inboard in the flange to set up this central inserts before the pouring of baffle insulating medium, embedding insulating medium inside after the pouring of insulating medium, and be connected to the baffle flange through front and back spacing groove, realize fixing between flange and the insulating medium, form basin formula insulator or metal ring flange basin formula insulator that is used for gas insulation high voltage apparatus.

This application adopts the milling cutter of horizontal direction cutting to replace the milling cutter of original vertical direction cutting, can not stretch into the inside processing of baffle flange with the supporting anchor clamps of milling cutter, can be suitable for and process the flange structure of smaller size. The application provides a flange diameter range that baffle flange structure is suitable for is wide, and the manufacturing condition who is suitable for is not high, and ordinary lathe can satisfy the manufacturing requirement.

The above are merely embodiments of the present application, and the description is specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the protection scope of the present application.

Claims (10)

1. A separator flange for a gas-insulated high-voltage electrical apparatus, comprising:

a front end limiting groove (131) arranged at the front end of the inner peripheral surface of the partition plate flange;

a rear end limiting groove (132) which is arranged at the rear end of the inner circumferential surface of the partition plate flange;

the front end limiting grooves (131) and the rear end limiting grooves (132) are arranged in a staggered mode.

2. The separator flange for a gas insulated high-voltage electric appliance according to claim 1, wherein the bottoms of the front end restriction groove (131) and the rear end restriction groove (132) are both arc-shaped, and the front end restriction groove (131) and the rear end restriction groove (132) are both formed by recessing the edge of the inner circumferential surface of the separator flange and are circumferentially spaced along the inner circumferential surface.

3. The separator flange for a gas insulated high-voltage electric appliance according to claim 2, wherein the front end restriction grooves (131) and the rear end restriction grooves (132) are respectively spaced at equal intervals along the front and rear side end surfaces of the inner circumference of the separator flange; and the radiuses of the front end limiting groove (131) and the rear end limiting groove (132) are smaller than the inner circumference radius of the partition plate flange.

4. The separator flange for gas-insulated high-voltage electrical appliances according to claim 2, wherein the thickness of the front end limiting groove (131) and the thickness of the rear end limiting groove (132) do not exceed 1/2 of the thickness of the separator flange;

the middle position of the inner peripheral surface of the partition plate flange is provided with S-shaped limiting bosses which are connected end to end and are uniformly distributed by the inner recesses of the front end limiting groove (131) and the rear end limiting groove (132), the S-shaped limiting bosses are abutted against the insulating pouring piece to limit the insulating pouring piece to slide along the axial direction of the partition plate flange, and the insulating pouring piece is limited to rotate along the circumferential direction of the partition plate flange.

5. The partition flange for a gas insulated high-voltage electric appliance according to claim 1, wherein the front end restriction groove (131) is formed by cutting an inner peripheral edge of the partition flange along a front side of the partition flange by a milling cutter (4);

the rear end restriction groove (132) is formed by a milling cutter (4) cutting an inner peripheral edge of the partition flange along a rear side of the partition flange.

6. The separator flange for gas insulated high-voltage electrical appliances according to claim 5, wherein the inside of the front end limiting groove (131) and the rear end limiting groove (132) are connected with the insulating medium (12) and the center insert (13), respectively, wherein the outer peripheral edges of the insulating medium (12) are simultaneously inserted into the front end limiting groove (131) and the rear end limiting groove (132), respectively, and the center insert (13) is fixed inside the insulating medium (12).

7. The partition flange for a gas insulated high voltage electric appliance according to claim 6, wherein each of the front end restriction groove (131) and the rear end restriction groove (132) has the same size.

8. The separator flange for a gas insulated high-voltage electric appliance according to claim 7, wherein the front end limiting groove (131) comprises 4 grooves uniformly arranged along the inner circumference of the separator flange;

the rear end limiting grooves (132) are uniformly arranged between two adjacent front end limiting grooves (131) along the rear side edge of the inner periphery of the partition plate flange.

9. The separator flange for a gas insulated high-voltage electric appliance according to claim 8, wherein the adjacent front end restriction grooves (131) and the rear end restriction grooves (132) are spaced apart by a predetermined distance.

10. The partition flange for a gas insulated high-voltage electric appliance according to claim 8, wherein the front end restriction groove (131) and the rear end restriction groove (132) are respectively formed by cutting along the inner peripheral edge of the partition flange in a transverse direction by a milling cutter.

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