CN102959816B - The assembly of the sleeve pipe for the electric equipment in metal shell and the isolator for the mechanical fixing with improvement - Google Patents

Abstract

A kind of ground connection isolator, comprise the fixed contact (18) in the hole (16) being fixedly mounted in cap portion (6.2), fixed contact (18) comprises the main body with longitudinal axis (Y), first longitudinal component of main body from described support portion projection and be connected to the earth, bonding pad between Part I and Part II comprises radial projection (26), and radial projection (26) comprises the second anchor ring (26.2) of tilting relative to longitudinal axis (Y) and the first anchor ring (26.1).The electric insulation arrangement (38,40) of such as two form of sleeve is arranged in hole (16).The inner surface (42,44) of sleeve (38,40) is configured as the first inclined plane (26.1) and the second inclined plane (26.2) of breasting radial projection in planar fashion (26) respectively.Fixed contact (18) is remained fixed in hole (16) by sleeve (38,40) by the grip block (50) be arranged in cap portion (6.2).

Description

The assembly of the sleeve pipe for the electric equipment in metal shell and the isolator for the mechanical fixing with improvement

Technical field

The application relate generally to a kind of in-sleeve pipe (bushing) of high voltage gas-insulated switchgear, and particularly relate to a kind of threephase switch equipment with single housing and the assembly for earthed switch used in described switchgear.

Background technology

Gas-insulated switchgear is generally provided with for the earthed switch by conductor ground connection inside metal casing, with the safety of operating personnel during the preservation & testing guaranteeing switchgear each several part.

Such as, by the known such switch of file WO2007/042548.

Described switch comprises the fixing grounding contact of the housing through switchgear, the end being in the grounding contact of hull outside is connected with ground, and the end being in case inside is by carrying out as with conductibility rod the so-called phase contact that is electrically connected with the movable contact on ground.

Fixed contact must be installed through housing in the mode preventing dielectric gas from leaking under the pressure contained at case inside; In addition, fixing grounding contact and housing are electric insulations.

But when movable contact moves and penetrates into phase contact, this contact is subject to mechanical force.

If the mechanical fixing of grounding contact is not enough, first described power can weaken the sealing between fixing grounding contact and housing, and secondly the guiding quality of movable contact can be bad, and this can cause movable contact too early with damaging, and the degeneration of contact.

In file WO2007/042548, fixing grounding contact is installed through housing by electric insulation sleeve, and provides plate bolt system to make the grounding contact maintenance of fixing.

This installation is very complicated, and on sleeve, be applied with considerable machinery and dielectric stress.

File FR1413462 describe a kind of by case relative to described case be electric insulation wall portion install fixed contact.This installation needs a large amount of parts.

Therefore, the object of the application is to provide has airtight installation and the earthed switch assembly guaranteeing the good mechanical fixing on housing, and is more generally provided for the sleeve pipe of the gas-insulated switchgear with the installation sealing of improvement and the mechanical fixing on housing of improvement.

Summary of the invention

The above-mentioned target of the application is realized by the sleeve pipe for gas-insulated switchgear, more specifically realized by the earthed switch assembly with fixed contact, described fixed contact is fixedly mounted in the hole of support portion, and comprise the elongated main body with longitudinal axis, described main body has the longitudinal Part I being designed to such as to carry out with ground being electrically connected from described support portion projection, and be designed to longitudinal Part II that will be contained in the housing of described switchgear, bonding pad between Part I and Part II comprises radial projection, described radial projection comprises the first anchor ring relative to described longitudinal axis and the second anchor ring.

The electric insulation arrangement of such as two form of sleeve is installed in the hole, to make the fixed contact of described support portion insulate.

The inner surface of described sleeve is configured as will the first inclined plane of correspondingly breasting (bearagainst) described radial projection and the second inclined plane in planar fashion.The grip block be arranged on described support portion makes described fixed contact maintenance appropriate location in the hole by described sleeve.

By the inclination of described of described radial projection, the longitudinal chucking power applied by described grip block is divided into axial component and radial component, thus guarantees described fixed contact in described support portion in radial and axial all good maintenance.

The rigidity of the mechanical fixing of described fixed contact in described housing is increased, this sealing first avoided between described housing and described fixed contact suffers stress, and next ensure that the extraordinary guiding to the movable contact be hinged on described fixed contact.

The simple number of installation elements structure is little.Thus simplify installation.

The sleeve being preferably placed at described hull outside is adjacent with the Part I of described fixed contact on certain length outside described support portion, and described length can adjust, to change the resistance to pressure (withstandvoltage) of described switchgear.

Like this, the theme of the application is a kind of sleeve pipe of gas-insulated switchgear, described switchgear is filled with the dielectric gas of pressurized and comprises the conductor element be arranged in support portion, described support portion forms a part for the housing of described switchgear, described support portion comprises through hole, described conductor element is arranged in described through hole, described conductor element comprise there is longitudinal axis side on be provided with the elongated main body of radial projection, first described projection is limited by the first anchor ring relative to described longitudinal axis in the vertical, and secondly limited by the second anchor ring relative to described longitudinal axis, described two faces tilt in opposite direction, electric insulation arrangement is installed in the hole, and at least between a shoulder and described conductor element in described hole, described device comprises the first inclination anchor ring of radial projection described in the mode breasting with face and the inclined plane of the second inclination anchor ring, and grip block is arranged on described support portion, and electric insulation arrangement described in breasting, to apply chucking power on the described electric insulation arrangement of the described shoulder in hole described in breasting.

Described electric insulation arrangement can comprise the first sleeve and the second sleeve, described first sleeve is made up of the electrical insulating material of the Part I around described fixed contact, be arranged between the described shoulder of described through hole and described radial projection, and be provided with the inclined-plane with the first inclination plane-plane contact of described radial projection, described second sleeve is made up of the electrical insulating material of the Part II of surrounding said conductor element, be arranged between described grip block and described radial projection, and be provided with the inclined-plane with the second inclination plane-plane contact of described radial projection.

Advantageously, described second sleeve comprises the larger-diameter part of carrying described inclined-plane and passes and exceed the small diameter portion adjacent with the Part II of described fixed contact of described grip block.

Advantageously, the first sleeve also comprises the vent passages through described first sleeve, so that gas circulates between two longitudinal surfaces of the first sleeve.

Advantageously, described inclined plane presents and in the scope of 30 ° to 60 °, more advantageously equals the inclination angle of 45 ° relative to described longitudinal axis.One of described can have greatly to the inclination angle of 90 °.

Contact between described second sleeve and described conductor element can prevent dielectric gas from leaking, and the contact between described second sleeve and described through hole prevents dielectric gas from leaking.

For this reason, O shape circle is arranged in the groove in the side surface being made in described conductor element, and contact with the hole of described second sleeve, and/or O shape circle is arranged in the groove in the side surface being made in described second sleeve, and contact with the described through hole of described support portion.

Such as, described grip block by the screw fastening be directly fastened in described support portion on described support portion.Advantageously, described grip block comprise recess with the face of described second barrel contacts, described recess holds the part of the hole projection from described support portion of described second sleeve.

The end being designed to the described conductor element of the hull outside being in described switchgear comprises par and the hole through described par, for installing pitman.

Another theme of the application is also earthed switch assembly, comprise at least one sleeve pipe according to the application, described conductor element is fixed contact, and switch comprises at least one movable contact be slidably installed relative to described fixed contact, described movable contact is designed to make described fixed contact and the phase contact electrical contact be connected on the Ampereconductors of described switchgear.

Another theme of the application is also a kind of earthed switch assembly for threephase switch equipment, comprises the assembly of three the application.

Three pars that described fixed contact is formed can be substantially coplanar, to make earth rod can be fastened on it.

Advantageously, described support portion is included in two protuberances on its lateral surface, and each described protruding parts between two fixed contact ends, and is provided with the hole for being fastened to by earth rod in described cap portion.

The upper end of described protuberance and the axial edge of described par and substantially coplanar from the longitudinal end of described second sleeve of the outside projection in described cap portion.

Another theme of the application is also a kind ofly to be filled with in the airtight metallic packaging of pressurized dielectric gas-high-voltage switch equipment, comprises metal shell, assembly that at least one is connected to the electric conductor on phase contact and installs at least one the application on the housing with air-tight manner.

For example, described housing presents the overall shape (generalshape) of tubulose, and the described cap portion side direction of described assembly is installed on the housing.

Another theme of the application to be also in one-high voltage threephase switch equipment, and comprise three electric conductors, each described electric conductor is connected to the assembly of phase contact and the application.

For example, described switchgear comprises the earth rod be fastened to by screw-nut system on the end of described fixed contact.

Described earth rod can by the stubborn screw fastening be affixed in the hole of described protuberance in described cap portion.

Accompanying drawing explanation

The application can be understood better by following explanation and accompanying drawing, wherein:

Fig. 1 is the longitudinal cross-section view of a part for the earthed switch assembly of the application;

Fig. 2 is the perspective view in the outside of the threephase switch equipment comprising three Fig. 1 earthed switch assemblies;

Fig. 3 is the perspective schematic view of the example of the switchgear can applying the application; And

Fig. 4 is the cross sectional view of the embodiment of the earthed switch of the application.

Embodiment

The application relates to single-phase earthing switch and three-phase ground switch.

In the illustrated example, the element of fixing grounding contact and formation earthed switch assembly is revolving body.This simplify manufacture and the installation of element.

Fig. 1 illustrates the part at earthed switch assembly 4 (Fig. 4) place in the application of the switchgear 2 of the application with cross section.

Fig. 2 illustrates a part for the threephase switch equipment of the application observed by outside, and described switchgear comprises assembly E1, E2 and E3 of three the application.

Fig. 3 schematically shows the example of the threephase switch equipment can applying the application.

Switchgear 2 comprises the airtight housing 6 of dielectric gas (dielectricgas) the such as sulphur hexafluoride (sF6) being filled with pressurized.

Switchgear 2 comprise be contained in inside housing 6 along axis X extend one or more Ampereconductors 8 or conductibility rod (such as high voltage bar).

Housing 6 comprises first tubular portion 6.1 with longitudinal axis X and the Part II 6.2 forming the cap portion, side coordinated with described tubular portion 6.1.Tubular portion 6.1 comprises the side opening of being closed with air-tight manner by cap portion, side 6.2.

In the illustrated example, side cap portion 6.2 is roughly bell.

Naturally, planar shaped cap portion still belongs to the scope of the application.In addition, the switchgear with other earthed switch any setting still belongs to the scope of the application.

The earthed switch assembly of the application is installed by cap portion 6.2, side.In the illustrated example, cap portion 6.2 is provided with annular flange 12, is fastened on tubular portion 6.1 in cap portion 6.2 by annular flange 12 by the flange 14 defining described side opening.

The fixed contact 18 of described earthed switch is from cap portion 6.2, side projection.

Can be expressly understood, the earthed switch assembly of the application can be directly installed in described housing, and need not be arranged on support portion in advance.

Because three assemblies E1, E2, E3 are similar, therefore, will only describe assembly E1 in detail.

Earthed switch assembly E1 is arranged in the hole 16 had through the longitudinal axis Y in cap portion 6.2.

Cap portion 6.2 forms the support portion for installing described fixed contact.

Described assembly is included in fixed contact 18 fixing in hole 16.

Hole 16 comprises the second larger diameter part 22 of the first smaller diameter portion 20 towards the inner side orientation of housing 6 and the outside orientation towards housing 6, and Part I 20 is connected by the annular surface 24 forming shoulder with Part II 22.

Described earthed switch comprises fixed contact 18, movable contact 19 and with the phase contact 10 (from Fig. 4 all) installed with the mode of Ampereconductors generation electrical contact.

Described movable contact is designed to make fixed contact 18 and the electrical contact of described phase contact, thus by described phase contact and the conductor ground connection that is connected with described phase contact.

In this application, fixed contact 18 comprises the radial projection 26 described fixed contact being divided into longitudinal Part I 28 and longitudinal Part II 30, Part I 28 is in cap portion 6.2 inside protrusions, and Part II 30 projection outside cap portion 6.2, and be designed to ground connection.

Radial projection 26 is geometrically formed by two frustum of a cones 32,34 with longitudinal axis Y, two frustum of a cone 32,34 reversed dips, thus joins at the larger base portion place of frustum of a cone 32,34.

Frustum of a cone 32,34 is marked by the dotted line in Fig. 1.Like this, radial projection 26 comprises around axis Y and two anchor rings 26.1,26.2 of relative axis Y inclination.In practice, described fixed contact is such as formed into single parts by machining.

In the illustrated example, the connecting portion between two frustum of a cones 32,34, by trimming, forms cylindrical zone 35, thus avoids wedge angle, reduces the risk of damage.

Assembly E1 also comprises for the device 36 by fixed contact 18 and cap portion 6.1 electric insulation.

Device 36 comprises the first sleeve 38 be made up of electrical insulating material that the Part I 28 around fixed contact 18 is installed, and around the second sleeve 40 be made up of electrical insulating material that the described Part II of fixed contact 18 is installed.

First sleeve 28 is called " inner barrel ", and described second sleeve is called " outer barrel ".

For example, described insulating sleeve is made up of PETG (PET), epoxy resin or polytetrafluoroethylene (PTFE).

Inner barrel 38 has the internal diameter of the diameter of the Part I 28 substantially equaling fixed contact 18, and inner barrel 38 can be installed around Part I 28 with minimum clearance.

Inner barrel 38 also comprises medial slope 42, and medial slope 42 has the inclination angle substantially equal with the inclination angle on the first inclined plane 26.1 and substantially equal area, makes breasting first inclined plane 26.1 in planar fashion, inclined-plane 44.

In the illustrated example, inner barrel 38 comprises shoulder 41 on its outer lateral surface, and shoulder 41 wants the shoulder 24 in breasting hole 16.Larger diameter part and the smaller diameter portion 43 be arranged in the smaller diameter portion 20 in hole 16 interconnect by shoulder 41.

Advantageously, vent passages 45 is formed in described inner barrel, and its profile is partly crossing with part 43 and through described larger diameter part, dielectric gas can be arrived between each element, avoid partial discharge.

It is contemplated that use only by being arranged on the inner barrel that in the larger diameter part in described hole, also described in breasting, the packing ring of the shoulder 24 in the hole 16 in cap portion is formed.

Outer barrel 40 has the internal diameter of the diameter of the Part II 30 substantially equaling fixed contact 18, and outer barrel 40 can be installed around Part II 30 with minimum clearance.

Outer barrel 40 also comprises medial slope 44, and medial slope 44 has the inclination angle substantially equal with the inclination angle on the second inclined plane 26.2 of radial projection 26 and substantially equal area, makes breasting second inclined plane 26.2 in planar fashion, inclined-plane 44.

Outer barrel 40 comprises shoulder 48 on its outer lateral surface, grip block 50 breasting shoulder 48.

Grip block 50 comprises center port 51, and the smaller diameter portion 56 of fixed contact 18 and outer barrel 40 is through center port 51.

Outer barrel 40 comprises the Part II 56 of the larger-diameter Part I 52 be arranged in the larger diameter part 22 in hole 16 and the small diameter exceeding shoulder 48, and Part II 56 is also close to the Part II 30 being positioned at outside through grip block 50.

In the illustrated example, Part II 30 has the diameter of the diameter being less than Part I 28.By such configuration, the creepage distance (creepagedistance) had on the surface of the insulating sleeve 40 of the Part II 56 of small diameter is greater than the creepage distance on insulating sleeve 38, this is because sleeve 38 is in the clean insulating gas atmosphere of described case inside.Sealing device is provided between the second sleeve 40 and fixed contact 18.

For example, two O shape circles 58 are arranged in respective groove 60, and groove 60 is made in the side surface of Part II 30 of fixed contact 18.

Sealing device is also provided between the larger diameter part 22 and outer barrel 40 in hole 16.

For example, two O shape circles 61 are arranged on (cannelure 63 is made in the surface radially of the larger diameter part 52 of outer barrel 40) in cannelure 63, and contact with the inner surface of the larger diameter part 22 in hole 16.

These sealing devices provide the static sealing preventing Leakage Gas.

Naturally, such as can be sealed by lip by different way in other position and implement sealing, the static sealing of even now does not need such sealing.

Originally inner barrel 38 is arranged in hole 16, the shoulder 24 in shoulder 41 breasting hole 16, and then fixed contact 18 is inserted in inner barrel 38, the inclined-plane 42 of the first inclined plane 26.1 breasting inner barrel 38 of radial projection 26.

Then outer barrel 40 is installed by the Part II 30 around fixed contact 18, the second inclined plane 26.2 of the inclined-plane 44 breasting radial projection 26 of outer barrel 40.

Then grip block 50 is installed by the smaller diameter portion 56 around fixed contact 18 and outer barrel 40.

Grip block 50 is fastened in described cap portion by screw 62, and screw 62 is twisted solid in the hole 64 in described cap portion being formed directly into surrounding hole.Clamped by the extruding between the shoulder 48 of outer barrel 40 and the medial surface 66 of grip block 50.

The smaller diameter portion of the second sleeve 40 is for avoiding the electric arcing (electricalflashover) between fixed contact 18 and grip block 50.The length of the second sleeve 40 can be changed, to change the resistance to pressure of described switch.

In the illustrated example, the axial dimension sum of the larger diameter part of outer barrel 40 and the larger diameter part of inner barrel 38 is greater than the degree of depth of the larger diameter part 22 in hole 16.

Like this, the larger diameter part 52 of outer barrel 40 projects into and exceeds hole 16.

Grip block 50 comprises annular recess 66, and annular recess 66 holds the end projecting into the larger diameter part of the outer barrel 40 exceeding described hole, makes it possible to the length reducing described device, makes it compacter.

The bearing-surface of described grip block is the assembly of plane, or the shoulder 48 of described outer barrel flushes with the end in hole 16 and the assembly that the bearing-surface of grip block 51 is plane can not exceed the scope of the application.

Fig. 2 illustrates how the fixed contact of the earthed switch assembly of the application is connected for the example of threephase switch equipment.

The free end of the Part II 30 of three fixed contacts 18 respectively comprises par 68 and extends laterally to the hole 70 of par 68.

Three pars 68 are substantially coplanar.

Earth rod 72 has square-section, or the earth rod 72 comprising at least one planar side makes its breasting par, side 68.

Rod 72 is fastening by screw nut system 73, and screw nut system 73 is arranged in the hole of making in the hole 70 of described free end and in earth rod 72.

Earth rod 72 is also directly fastened in cap portion 6.2 in a particularly advantageous manner.For this reason, cap portion 6.2 has two protuberances 74, and each protuberance 74 arranges porose, and each hole is between two fixed contacts 18.

Earth rod 72 comprises two through holes alignd with described two protuberances 74, can hold the screw 76 for being fastened to by described earth rod in described cap portion.

Advantageously, the free end of protuberance 74 aligns with the axial vane surface of described par, and aligns with the free end of the smaller diameter portion at the described hull outside outer barrel 40 adjacent with fixed contact 18.It is stable fastening that this alignment ensure that earth rod 72, and the fixed contact 18 avoided to the earth rod 72 with overhung applies distortion.

For example, fixed contact 18 is made of aluminum.

The power that grip block 50 is applied along axis Y by extruding on outer barrel 40, this power is delivered on fixed contact 18 from outer barrel 40 by the extruding between the second inclined plane 26.2 of radial projection 26 and the inclined-plane of outer barrel 40.

Like this, the power being orthogonal to the surface of described contact is broken down into radial component and axial component.

Reaction force also radially component and the axial component distribution on the first inclined plane 26.1 place.

Therefore, fixed contact 18 is fixed vertically and laterally by radial projection 26.Inner barrel 38 and outer barrel 40 strain during clamping.

Like this, fixed contact 18 is rigidly held in axis and radial direction.

Advantageously, the inclination angle on the first and second inclined planes of radial projection 26 within the scope of 60 °, and advantageously equals 45 °, to guarantee the distribution of the balance between described radial component and axial component at 30 °.The inclination angle on the surface 26.1 contacted with inner barrel 38 can reach 90 °.

Like this, due to fixed contact 18 rigidity or be bordering on the mechanical fixing of rigidity, the load be applied to when described movable contact moves on fixed contact 18 does not cause or causes the movement of little fixed contact 18, thus no longer includes the risk of degeneration.In addition, also form the guiding support of the rigidity of the slip for described movable contact due to described fixed contact, the guiding of described movable contact is improved.

Electric insulation between described housing and described fixed contact is only provided by two sleeves 38 and 40, does not need being used for the electrical insulating material of screw application plastic material type of fastening clamp plate 50.

These materials easy elasticity creep and aging.

In addition, the described sleeve of the application and described fixed contact are only by the given shape maintenance simultaneously of described grip block and described element.

In addition, described element presents relatively simple revolving body (bodyofrevolution), makes described shape can manufactured and assembling simply.

In addition, the application presents the advantage of the independently assembly providing such, and described assembly is formed by one or more fixed contact and described cap portion, thus can simplify assembly and disassembly.The pre-installation of this stand-alone assembly makes it possible to the alignment improving described contact.

In addition, described assembly presents significant compactedness.

Achieve air-tightness simply by relatively firm O shape circle, thus reduce the risk of leakage.

Form and the layout of described movable contact and phase contact can be any known types.

Fig. 4 shows the inner side of the switchgear of the application.

Described conductor extends along axis X, and electric current flows along axis X, and described conductor carries the contact 10 of lateral protrusion, and contact 10 is designed to described conductor 8 can be grounded, and described contact 10 is called as " phase contact ".

Contact 10 is along the axis Y orientation being orthogonal to axis X.In the illustrated example, contact 10 comprises the contact elements 15 of the shell 12 and tulip shape be electrically connected with conductor 8, and contact elements 15 is for holding the end of the contact elements of earthed switch 4.

This tulip shape is also nonrestrictive.

As mentioned above, the earthed switch of the application can comprise three assemblies of basic simlarity, and described three assemblies are associated with electric conductor 8 separately.

Only describe an assembly in detail.

Fixing grounding contact 18 comprises the longitudinal first end be positioned at outside housing 6 and the longitudinal the second end be positioned at inside housing 6.

The Part II 28 of fixing grounding contact 18 comprises the shell 80 with axis Y.Therefore, the axis of shell 80 and the axis of contact elements 10 are alignment.Shell 80 is provided with peripheral isolation part 82.

Removable grounding contact 19 presents elongated shape, such as, along the bar that the length of axis Y is slidably installed in shell 80.Internal diameter and the external diameter of movable contact 19 of shell 80 are chosen as and movable contact 19 are not contacted with shell 80.For example, the internal diameter of shell 80 1mm to 4mm larger than the diameter of movable contact 19.

Electrical contact between movable contact 19 and fixed contact 18 is obtained by the contact 84 of tulip shape, and contact 84 is anchored on the open end of shell 80 of fixed contact 18.Like this, movable contact 19 is guided by described contact 84, and guides primarily of following guide sleeve 88.

For example, the cross section of removable grounding contact 19 is circular, and shell 80 is rendered as circular cross-section.

In the illustrated example, removable grounding contact 19 comprises longitudinal first end 19.1 of the contact elements 15 being designed to penetrate into phase contact 10.

Longitudinal the second end of removable grounding contact 19 is mechanically connected with displacement device 86 by the insulating sleeve 88 slided around fixed contact 18, and displacement device 86 moves axially along Y-axis for making removable grounding contact 19.Advantageously, described displacement device 86 relative to described grounding contact Strategic Lateral Offset, described assembly can be made compacter.

By the application, radial maintenance and the axial maintenance of shell 80 are improved, and then ensure that the good guiding of movable contact 19 to phase contact 10.

Sidepiece is mechanically connected between removable grounding contact 19 and displacement device 86.For this reason, the isolation part 82 of shell 80 comprises at least one longitudinal slit 90, and removable grounding contact 19 is mechanically connected by slit 90 and displacement device 86.

In the illustrated example, the isolation part 82 of shell 80 advantageously comprises two longitudinal slits 90 diametrically, and longitudinal the second end of removable grounding contact 19 comprises the through hole being orthogonal to axis Y, and the pin 94 be connected on displacement device 86 is installed in described through hole.

This connection ensures the mechanical couplings (mechanicalcoupling) of balance.

In the illustrated example, the mechanical connection between pin 94 and displacement device 86 is by surrounding fixing grounding contact 18 and obtaining around its electric insulation sleeve 88 slided.

In another variant embodiments, described earthed switch comprises fixing grounding contact and the movable contact of the application be arranged in mounting panel, described movable contact can move along the axis of the axis perpendicular to described fixing grounding contact, in order to be electrically connected described phase contact and described fixing grounding contact.Described movable contact is formed by the bar through described fixing grounding contact.

Contact 18 may be used for other application implemented beyond ground connection.Such as, it can be formed for conducting the element of representative for the signal (such as temperature) of the operating characteristics of gas-insulated switchgear.

Claims (19)

1. the sleeve pipe of a gas-insulated switchgear (2), described switchgear (2) is filled with the dielectric gas of pressurized and comprises the conductor element (18) be arranged in support portion (6.2), described support portion (6.2) forms a part for the housing (6) of described gas-insulated switchgear, described support portion (6.2) comprises through hole (16), described conductor element (18) is arranged in described through hole (16), described conductor element (18) comprise there is longitudinal axis (Y) side on be provided with the elongated main body of radial projection (26), first described projection is limited by the first inclination anchor ring (26.1) tilted relative to described longitudinal axis (Y) in the vertical, and secondly limited by the second inclination anchor ring (26.2) tilted relative to described longitudinal axis (Y), described first inclination anchor ring and described second inclination anchor ring tilt in opposite direction, electric insulation arrangement (38, 40) be arranged in described hole (16), and at least between a shoulder (24) and described conductor element (18) of described hole (16), described electric insulation arrangement comprises the first inclined plane (42) and the second inclined plane (44), described first inclined plane (42) is with the first inclination anchor ring (26.1) of radial projection (26) described in the mode breasting in face, described second inclined plane (44) is with the second inclination anchor ring (26.2) of radial projection (26) described in the mode breasting in face, and grip block (50) is arranged on described support portion (6.2), and electric insulation arrangement (38 described in breasting, 40), so that the described electric insulation arrangement (38 of the described shoulder (24) of hole (16) described in breasting, 40) chucking power is applied on, the described main body of described projection and described conductor element is one, described first inclined plane and described first inclination annular face contacts, described second inclined plane and described second inclination annular face contacts.

2. the sleeve pipe of gas-insulated switchgear according to claim 1, wherein said electric insulation arrangement comprises the first sleeve (38) and the second sleeve (40), described first sleeve (38) is made up of the electrical insulating material of the Part I (28) of surrounding said conductor element (18), be arranged between the described shoulder (24) in described hole (16) and described radial projection (26), and be provided with described first inclined plane (42) contacted with the first inclination anchor ring (26.1) face of described radial projection (26), described second sleeve (40) is made up of the electrical insulating material of the Part II (30) of surrounding said conductor element (18), be arranged between described grip block (50) and described radial projection (26), and be provided with described second inclined plane (44) contacted with the second inclination anchor ring (26.2) face of described radial projection (26).

3. the sleeve pipe of gas-insulated switchgear according to claim 2, wherein said second sleeve (40) comprises the larger-diameter part (52) of carrying described second inclined plane (44) and passes and exceed the small diameter portion (56) adjacent with the Part II (30) of described conductor element (18) of described grip block (50).

4. the sleeve pipe of gas-insulated switchgear as claimed in any of claims 1 to 3, wherein said first inclination anchor ring and the second inclination anchor ring (26.1,26.2) present relative to the inclination angle of described longitudinal axis (Y) in the scope of 30 ° to 60 °.

5. the sleeve pipe of the gas-insulated switchgear according to Claims 2 or 3, contact between wherein said second sleeve (40) and described conductor element (18) prevents dielectric gas from leaking, and the contact between described second sleeve (40) and described hole (16) prevents dielectric gas from leaking.

6. the sleeve pipe of gas-insulated switchgear according to claim 5, wherein O shape circle (58) is arranged in the groove (60) in the side surface being made in described conductor element (18), and contacts with the hole of described second sleeve (40).

7. the sleeve pipe of gas-insulated switchgear according to claim 5, wherein O shape circle (61) is arranged in the groove (63) in the side surface being made in described second sleeve (40), and contacts with the described hole (16) of described support portion (6.2).

8. the sleeve pipe of the gas-insulated switchgear according to Claims 2 or 3, wherein said electric insulation arrangement comprises the first sleeve (38) and the second sleeve (40), described first sleeve (38) is made up of the electrical insulating material of the Part I (28) of surrounding said conductor element (18), be arranged between the described shoulder (24) in described hole (16) and described radial projection (26), and be provided with described first inclined plane (42) contacted with the first inclination anchor ring (26.1) face of described radial projection (26), described second sleeve (40) is made up of the electrical insulating material of the Part II (30) of surrounding said conductor element (18), be arranged between described grip block (50) and described radial projection (26), and be provided with described second inclined plane (44) contacted with the second inclination anchor ring (26.2) face of described radial projection (26), and the face contacted with described second sleeve (40) of wherein said grip block (50) comprises recess (66), described recess (66) holds the part of the through hole from described support portion (6.2) (16) projection of described second sleeve (40).

9. the sleeve pipe of switchgear as claimed in any of claims 1 to 3, the end being wherein designed to the described conductor element (18) in housing (6) outside being in described switchgear comprises par (68) and crosses the hole (70) of described par (68), for stub (72) is arranged on described end.

10. the sleeve pipe of gas-insulated switchgear according to claim 4, wherein, equals 45 ° relative to the described inclination angle of described longitudinal axis (Y).

11. 1 kinds of earthed switch assemblies, comprise at least one sleeve pipe according to the gas-insulated switchgear in claim 1-10 described in any one, described conductor element is fixed contact (18), and switch comprises at least one movable contact be slidably installed relative to described fixed contact, described movable contact is designed to make described fixed contact (18) and the phase contact electrical contact be connected on the Ampereconductors of described switchgear.

12. 1 kinds of earthed switch assemblies for threephase switch equipment, comprise three assemblies according to claim 11.

The 13. earthed switch assemblies for threephase switch equipment according to claim 12, the end being wherein designed to each fixed contact (18) in housing (6) outside being in described switchgear comprises par (68) and crosses the hole (70) of described par (68), for stub (72) is arranged on described end, wherein three described pars (68) are substantially coplanar, and described stub is earth rod.

The 14. earthed switch assemblies for threephase switch equipment according to claim 13, wherein said support portion (6.2) forms cap portion and is included in two protuberances (74) on its lateral surface, each described protuberance (74) is positioned between two fixed contact ends (18), and is provided with the hole for being fastened to by earth rod (72) on described support portion (6.2).

The 15. earthed switch assemblies for threephase switch equipment according to claim 14, the upper end of wherein said protuberance (74) and the axial edge of described par (68) and substantially coplanar from the longitudinal end of described second sleeve (40) of the outside projection of described support portion (6.2).

16. 1 kinds to be filled with in the airtight metallic packaging of pressurized dielectric gas-high-voltage switch equipment, comprise metal shell (6), at least one is connected to Ampereconductors (8) on phase contact and installs at least one assembly according to claim 11 on the housing with air-tight manner.

In 17. airtight metallic packaging according to claim 16-and high-voltage switch equipment, wherein said housing (6) presents the overall shape of tubulose, and the described support portion side direction of described assembly is installed on the housing.

In 18. 1 kinds of airtight metallic packaging-and high voltage threephase switch equipment, comprise three Ampereconductors being connected to phase contact separately and according to claim 12 to the assembly described in any one in 15.

In 19. airtight metallic packaging according to claim 18-high voltage threephase switch equipment, described support portion (6.2) is included in two protuberances (74) on its lateral surface, each described protuberance (74) is positioned between two fixed contact ends (18), and the hole be provided with for described stub (72) being fastened on described support portion (6.2), described stub is fastened to the end of described fixed contact (18) by screw-nut system, and described stub is earth rod.