CN100341215C

CN100341215C - Connection structure of gas container

Info

Publication number: CN100341215C
Application number: CNB200510006223XA
Authority: CN
Inventors: 前田多一
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2004-01-14
Filing date: 2005-01-14
Publication date: 2007-10-03
Anticipated expiration: 2025-01-14
Also published as: JP2005204382A; JP4312058B2; TW200527790A; TWI294714B; CN1641952A; HK1080619A1

Abstract

A connecting structure of the gas vial includes the two vials 3, 5 for containing electric devices 4, 6, a circuit conductor 9 provided through partition walls 3a, 5a adjacent to each other, and an insulating bushing 9 interposed between the circuit conductor 9 and the partition walls 3a, 5a. The inserts 12 are embedded in the bushing 9 in a state that both end faces are exposed to an exterior. Female threaded parts 12a, 12b are formed on the insert 12 from both the end faces toward the inward. The gas vials 3, 5 are coupled integrally to the bushing 9 with bolts 14 engaged with the female threads 12a, 12b. The connecting structure of a gas vial suppresses the occurrence of heat strain or residual stress by reducing the number of inserts which should be embedded in a bushing and which can, moreover, reduces a time and effort and time duration when the inserts are integrally molded in the bushing.

Description

The joint construction of gas container

Technical field

The present invention relates to as the gas-insulated switch mechanism that in each circuit units each electric equipment is contained in the gas container, be used to make inside to contain the interconnective structure of several gas containers of electric equipment.

Background technology

In the past, following example is arranged in switching mechanism, that is, various electric equipments such as device, circuit breaker are contained in each gas container respectively, and by in this container, enclosing insulating gas improving the withstand voltage properties of each electric equipment, thereby the miniaturization of implement device integral body.

In such switching mechanism, owing to must will be contained in the outside that leads to this container that is electrically connected of the interior electric equipment of each gas container, thereby, the next door that connects each gas container is inside and outside, be provided with electric equipment connects and uses return conductors, and, between the next door of gas container and return conductors, be provided with and be used to make the lining that keeps electric insulation between the two.

Yet, as conventional art, be to obtain the densification of device integral body, have employing with the adjacent next door of gas container to each other with the example of the fixing formation of lining one (reference, for

example patent documentation

1,2 etc.).Like this, the example that in the past constituted that the adjacent next door and the lining of gas container are fixed is shown in Fig. 5.

In example shown in Figure 5, between adjacent each next door 51a, 52a of 2

gas containers

51,52, be provided with the lining 53 of the insulating properties that is made of synthetic resin, the both sides at the thickness direction of this lining 53 are embedded with the edge that has the 54a of negative thread portion separately respectively and bury metalwork 54.In this occasion, lining 53 buries metalwork 54 by integrated ground injection moldeds such as insertion moulding with each edge.And, screw bolt 56 by the 54a of negative thread portion that buries metalwork 54 at each edge, and next door 51a, the 52a of each

gas container

51,52 and lining 53 be combined into one.In addition, numbering 58 expressions are arranged at next door 51a, 52a and the O shape circle of the air seal between the lining 53 of each

gas container

51,52.

[patent documentation 1] Japanese patent laid-open 06-014424 communique

[patent documentation 2] Japanese patent laid-open 07-264754 communique

Yet in formation in the past shown in Figure 5, by the occasion of 2

gas containers

51,52 of lining 53 connections, the edge that must possess the quantity corresponding with the number of employed bolt 56 buries metalwork 54.When use for example occasion of heat-curing resin etc. as lining 53 moulding materials, owing to solidify to be that high temperature that edge buries metalwork 54 carries out gradually from being provided with, the number that edge buries metalwork 54 is many more, easy more generation thermal deformation and residual stress in the lining 53 after the shaping.And ヒケ), if produce this kind thermal deformation and residual stress, then can cause and break or shrink that (Japanese: the generation of unfavorable condition such as makes

gas container

51,52 lose air-tightness in the lining 53.

In addition, be inlaid with the lining 53 that buries metalwork 54 when being shaped making, carry out resin forming because edge buried after metalwork 54 is arranged in the mould, the number that edge buries metalwork 54 is many more, and labour who is used to prepare and time during resin forming are many more.

Summary of the invention

The present invention makes for addressing the above problem, its purpose is, prepares the required labour and the joint construction of the gas container of time when number that edge in the lining buries metalwork suppresses the thermal deformation that takes place in the lining and residual stress and can cut down resin forming thereby provide reduction to be embedded in.

For achieving the above object, the joint construction of gas container of the present invention, the adjacent next door that makes inside contain 2 gas containers of electric equipment is fixed on the lining of insulating properties simultaneously, and, connect the next door of above-mentioned lining and each gas container and the return conductors that is connected usefulness with above-mentioned electric equipment is set, it is characterized in that, adopt following formation, promptly, among the present invention, in above-mentioned lining, be sandwiched on wherein the thickness direction edge being buried metalwork by each adjacent next door, edge is buried the state that metalwork exposes to the outside with its both ends of the surface bury underground, and, bury on the metalwork at this edge, be formed with separately negative thread portion independently of each other, each adjacent next door and above-mentioned lining are combined into one by the securing member that screws with these negative thread portions towards interior side from its both ends of the surface.

The joint construction of gas container of the present invention fixedly the time, corresponding to 2 securing members, need only be provided with gas container and lining 1 edge and bury metalwork, thereby, compared with the past, can reduce by half being embedded in the number that edge in the lining buries metalwork.For this reason, can suppress the generation of thermal deformation and residual stress in the lining, can reduce and break or the generation of unfavorable condition such as contraction.And, just cut down labour that the preparation in the time of can reducing resin forming is required and time owing to should be embedded in the number that edge in the lining buries metalwork.

Description of drawings

Fig. 1 is the cutaway view of the gas insulation opening and closing arrangement of the switching mechanism of the expression embodiment of the invention 1.

Fig. 2 amplifies the cutaway view of expression to the coupling part of 2 units of the gas insulation opening and closing arrangement of pie graph 1.

Fig. 3 is that the part of only next door and the lining of 2 gas containers among Fig. 2 being fixed is taken out the cutaway view of expression.

Fig. 4 is that the part of only next door and the lining of 2 gas containers in the embodiment of the invention 2 being fixed is taken out the cutaway view of expression.

Fig. 5 for expression will adjacent gas container the cutaway view of an example of formation in the past that interfixes by lining each other of each next door.

Embodiment

Below, to the joint construction of gas container of the present invention, be example with the occasion that is applied to switching mechanism, describe.

[embodiment 1]

Fig. 1 is the cutaway view of the gas insulation opening and closing arrangement of the switching mechanism of the expression embodiment of the invention 1, Fig. 2 amplifies the cutaway view of expression to the coupling part of 2 units of the gas insulation opening and closing arrangement of pie graph 1, and Fig. 3 takes out the cutaway view of representing for the part that only next door of 2 gas containers among Fig. 2 is fixed in lining.

The gas insulation opening and closing arrangement of the switching mechanism of present embodiment 1 possesses 2 units 1,2.And, in a side the unit 1, end the inside that device 4 is contained in gas container 3, and in the opposing party's unit 2, circuit breaker 6 is contained in the inside of gas container 5.In addition, in each gas container 3,5,, enclose for example insulating gas such as SF6 gas for improving the withstand voltage properties of each equipment 4,6.

In addition, to be contained in each gas container 3,5 by device 4, circuit breaker 6, connecting return conductors 7a～7g successively.Owing to be applied with high voltage on these return conductors 7a～7g,, there is the necessity of carrying out electric insulation with gas container 3,5 for making gas container 3,5 inside and outside return conductors 7a, 7d, the 7g that connect.For this reason, between these return conductors 7a, 7d, 7g and each gas container 3,5, be provided with the

lining

8,9,10 that for example forms by insulating properties material formings such as epoxy resin.In addition, each gas container 3,5 is grounded.

Especially, in present embodiment 1, be the densification of implement device integral body, adjacent next door 3a, the 5a of gas container 3,5 are fixed on the lining 9.That is, this lining 9 has: lead in cylindrical portion 9a wherein and the flange part 9b that stretches to foreign side from this cylindrical portion 9a radius vector by return conductors 7d is inserted, in flange part 9b, be embedded with edge by modes such as insertion moulding integratedly and bury metalwork 12.

This edge buries metalwork 12, is exposed to outside state with its both ends of the surface on the thickness direction of the flange part 9b of lining 9 and buries underground.That is, the axial length setting that edge is buried metalwork 12 becomes roughly to equate with the thickness of flange part 9b.And,, be formed with respectively the 12a of negative thread portion, 12b independently of each other towards interior side from the both ends of the surface that this edge buries metalwork 12.

Bury the bolt 14 of securing member of each 12a of negative thread portion, 12b of metalwork 12 as this edge, screw, thus, gas container 3,5 and lining 9 are combined into one by next door 3a, 5a and packing ring 15.In addition, next door 3a, 5a and the O shape circle of the air seal between the lining 9 of each gas container 3,5 is located in numbering 16,17 expressions.

So, in the present embodiment 1, gas container 3,5 and lining 9 fixedly the time, corresponding to 2 bolts 14, need only be provided with 1 edge and bury metalwork 12, thereby, compared with the past, can reduce by half being embedded in the number that edge in the lining 9 buries metalwork 12.For this reason, can suppress the generation of thermal deformation and residual stress in the lining 9, can reduce and break or the generation of unfavorable condition such as contraction.And, just cut down labour that the preparation in the time of can reducing resin forming is required and time owing to should be embedded in the number that edge in the lining 9 buries metalwork 12.

[embodiment 2]

Fig. 4 takes out the cutaway view of representing for the part that only next door of 2 gas containers in the embodiment of the invention 2 is fixed in lining, for Fig. 1 to embodiment 1 corresponding component part shown in Figure 3, adopt same numbering.

Being characterized as of present embodiment 2, the edge that is embedded in the flange part 9b of lining 9 bury metalwork 13 from both ends of the surface form separately towards each 13a of negative thread portion, 13b of interior side, be not to be in relative state, bury the state that on the direction of thickness direction of metalwork 13 stagger mutually in the position and be in perpendicular to edge.Other constitute similarly to Example 1, thereby, omit its detailed description at this.

In the formation of present embodiment 2, owing to can make the thickness of the flange part 9b of lining 9 become thinner, so except that the effect that can obtain the foregoing description 1, effect, more favourable for the densification of seeking device integral body.

In addition, in the

foregoing description

1,2, the occasion that applies the present invention to switching mechanism is illustrated, yet the present invention is not limited thereto,, all can be applied widely so long as 2 adjacent gas containers are fixed in the formation of lining.In addition, can carry out fastening with replacement bolts such as screw 14 as securing member.

Claims

1. the joint construction of a gas container, the adjacent next door that makes inside contain 2 gas containers of electric equipment is fixed on the lining of insulating properties simultaneously, and, connect the next door of above-mentioned lining and each gas container and the return conductors that is connected usefulness with above-mentioned electric equipment is set, it is characterized in that

In above-mentioned lining, bury edge underground and bury metalwork, bury on the metalwork thickness direction folded at this edge by each adjacent next door, this edge buries the both ends of the surface of metalwork and exposes to the outside, and, bury on the metalwork at this edge, be formed with separately negative thread portion independently of each other from its both ends of the surface, each adjacent next door and above-mentioned lining be combined into one by the securing member that screws with these negative thread portions towards interior side.

2. the joint construction of gas container according to claim 1 is characterized in that, it is not relative mutually to be formed at each negative thread portion that above-mentioned edge buries on the metalwork, but staggers burying on the direction of thickness direction quadrature of metalwork with above-mentioned edge.