CN117831999A - Vacuum arc-extinguishing chamber for miniaturized vacuum switch equipment - Google Patents

Abstract

The invention discloses a vacuum arc-extinguishing chamber for miniaturized vacuum switch equipment, which comprises a shell, wherein the shell comprises a shell main body, a first shell cover and a second shell cover, a fixed contact, a moving contact and an insulating pull rod are arranged in the shell, a wire inlet end is fixedly arranged on the first shell cover, one end of the wire inlet end, which is positioned in the shell, is fixedly connected with the fixed contact, a conducting rod is fixedly connected between the moving contact and the insulating pull rod, one end, which is far away from the conducting rod, of the insulating pull rod is fixedly connected with a linkage shaft, one end, which is far away from the insulating pull rod, of the linkage shaft penetrates through the second shell cover to extend to the outside of the shell, a wire outlet end is arranged on the shell main body, a first through hole for the conducting rod to penetrate is arranged on the part, which is positioned in the shell, of the wire outlet end is provided with a watchband contact finger. The vacuum arc-extinguishing chamber for the miniaturized vacuum switch equipment is simple in structure, small in size and low in cost; the invention is characterized in that the insulating pull rod is arranged in the vacuum arc-extinguishing chamber, thus realizing solid insulation in the true sense.

Description

Vacuum arc-extinguishing chamber for miniaturized vacuum switch equipment

Technical Field

The invention relates to the technical field of high-voltage switch equipment, in particular to a vacuum arc-extinguishing chamber for miniaturized vacuum switch equipment.

Background

The existing switch equipment generally adopts a two-station structure, and the structure has the problems of large volume, high cost, complex structure and the like. Particularly, the lower end primary electrified part of the vacuum arc-extinguishing chamber adopted by the existing solid insulation switch equipment in the market is placed in the air, so that the solid insulation switch equipment is not really regarded as the solid insulation switch equipment.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the vacuum arc-extinguishing chamber for the miniaturized vacuum switch equipment, which has simple structure, small volume and low cost, and the switch equipment using the arc-extinguishing chamber can generate economic benefit; in addition, the insulating pull rod is arranged in the vacuum arc-extinguishing chamber, so that the technical problem that the once-charged parts of the solid insulating switch equipment are arranged in the air and cannot be really called as solid insulation is fundamentally solved.

The invention discloses a vacuum arc-extinguishing chamber for miniaturized vacuum switch equipment, which comprises a shell, wherein the shell comprises a cylindrical shell main body and shell covers fixedly arranged at two ends of the shell main body, a fixed contact, a movable contact and an insulating pull rod are sequentially arranged in the shell along the axial direction, the shell cover of the shell, which is close to the fixed contact, is a first shell cover, the shell cover of the shell, which is close to the insulating pull rod, is a second shell cover, a wire inlet end is fixedly arranged on the first shell cover, two ends of the wire inlet end are respectively positioned in the shell and outside, one end, which is positioned in the shell, of the wire inlet end is fixedly connected with the fixed contact, a conducting rod is fixedly connected between the movable contact and the insulating pull rod, one end, which is far away from the conducting rod, of the insulating pull rod is fixedly connected with a linkage shaft, one end, which is far away from the insulating pull rod, of the linkage shaft is extended to the outside of the shell, part of the wire outlet end is positioned in the shell, the other part, which is positioned in the shell, is positioned outside the shell, is provided with a first through hole, through which is used for the conducting rod to pass through, the conducting rod is fixedly arranged on the part, which is positioned in the shell, of the shell, and the conducting rod is positioned in the shell, and the first through hole, which is arranged in the shell, and the first through hole, which is positioned between the first through hole and the conducting rod and the first wire inlet end and the first through wire end, and the conducting rod can be positioned between the first wire and the first conducting rod and the first terminal and the outer end.

The invention relates to a vacuum arc-extinguishing chamber for miniaturized vacuum switch equipment, wherein the peripheries of a fixed contact and a movable contact are provided with shielding cases, the shielding cases are positioned in a shell between a wire outlet end and a first shell cover, the shielding cases are in a cylinder shape, the shielding cases and a shell main body are coaxially arranged, and one end, close to the wire outlet end, of each shielding case is fixedly arranged on a part, positioned in the shell, of the wire outlet end.

The invention relates to a vacuum arc-extinguishing chamber for a miniaturized vacuum switch device, wherein a corrugated pipe is sleeved on the outer side of a linkage shaft, the corrugated pipe is positioned in a shell, one end of the corrugated pipe is fixedly connected to a second shell cover, and the other end of the corrugated pipe is fixedly connected to the linkage shaft.

The invention relates to a vacuum arc-extinguishing chamber for miniaturized vacuum switch equipment, wherein a grounding static contact is fixedly arranged on a shell main body, one part of the grounding static contact is positioned in the shell, the other part of the grounding static contact is positioned outside the shell, a second through hole for a conducting rod to pass through is formed in the part of the grounding static contact positioned in the shell, the conducting rod is inserted in the second through hole, the grounding static contact is arranged closer to a second shell cover relative to an outlet terminal, an insulating pull rod is positioned between the grounding static contact and the second shell cover, a grounding moving contact is fixedly arranged on the conducting rod, the grounding moving contact is positioned between the grounding static contact and the outlet terminal, and the outer diameter of the grounding moving contact is larger than the aperture of the second through hole.

The invention discloses a vacuum arc-extinguishing chamber for miniaturized vacuum switch equipment, wherein a shell main body comprises a first sub-shell main body, a second sub-shell main body and a third sub-shell main body, the first sub-shell main body, the second sub-shell main body and the third sub-shell main body are all cylindrical, one end of the first sub-shell main body is fixedly provided with a first shell cover, the other end of the first sub-shell main body is fixedly arranged on an outlet end, two ends of the second sub-shell main body are respectively fixedly arranged on the outlet end and a grounding static contact, one end of the third sub-shell main body is fixedly arranged on the grounding static contact, and the other end of the third sub-shell main body is fixedly provided with a second shell cover.

The invention is used for a vacuum arc-extinguishing chamber of a miniaturized vacuum switch device, wherein the wire inlet end, the wire outlet end, the grounding movable contact and the grounding fixed contact are all made of red copper materials.

The invention is used for the vacuum arc-extinguishing chamber of the miniaturized vacuum switch equipment, wherein the fixed contact and the moving contact are both made of copper-chromium alloy materials.

The invention is used for the vacuum arc-extinguishing chamber of the miniaturized vacuum switch equipment, wherein the shell is made of ceramic or glass materials, and the insulating pull rod is made of ceramic materials.

The vacuum arc-extinguishing chamber is used for miniaturized vacuum switch equipment, wherein the shielding cover is made of stainless steel materials, and the watchband contact finger is made of beryllium bronze materials.

The invention is used for the vacuum arc-extinguishing chamber of the miniaturized vacuum switch equipment, wherein the corrugated pipe is made of stainless steel materials, and the universal driving shaft is made of copper or stainless steel materials.

The vacuum arc-extinguishing chamber for the miniaturized vacuum switch equipment is different from the prior art in that the vacuum arc-extinguishing chamber comprises a shell, wherein a fixed contact, a moving contact and an insulating pull rod are arranged in the shell, a wire inlet end and a wire outlet end are also arranged on the shell, the wire inlet end is fixedly connected with the fixed contact, a conductive rod is fixedly connected between the moving contact and the insulating pull rod, the conductive rod is inserted into a first through hole of the wire outlet end, the insulating pull rod is fixedly connected with a linkage shaft, and one end of the linkage shaft far away from the insulating pull rod extends to the outside of the shell. When the switch-on is performed, the linkage shaft is operated, the linkage shaft, the insulating pull rod, the conducting rod and the moving contact move towards the fixed contact together until the moving contact is contacted with the fixed contact (namely, the moving contact and the fixed contact are connected), at the moment, the watchband contact finger on the conducting rod is contacted with the inner wall of the first through hole (namely, the watchband contact finger on the conducting rod is connected with the watchband contact finger, the conducting rod, the moving contact, the fixed contact and the incoming wire end are sequentially connected through the watchband contact finger, the conducting rod, the moving contact and the incoming wire end, and the switch-on between the outgoing wire end and the incoming wire end is completed; when the brake is separated (isolated), the linkage shaft is operated, so that the linkage shaft, the insulating pull rod, the conducting rod and the moving contact move away from the fixed contact together, and then the moving contact and the fixed contact are separated, so that the wire outlet end is separated from the wire inlet end, and the brake separation between the wire outlet end and the wire inlet end is completed. Therefore, the switching device of the arc extinguishing chamber has the advantages of simple structure, small volume and low cost, and can generate economic benefit; in addition, the insulating pull rod is arranged in the vacuum arc-extinguishing chamber, so that the technical problem that the once-charged parts of the solid insulating switch equipment are arranged in the air and cannot be really called as solid insulation is fundamentally solved.

The invention is further described below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic diagram of a first embodiment of a vacuum interrupter (a closed state) for a miniaturized vacuum switching apparatus according to the present invention;

fig. 2 is a schematic diagram of a vacuum interrupter for miniaturized vacuum switching devices according to a second embodiment of the present invention (a switching-off state);

fig. 3 is a schematic diagram of a first embodiment of a vacuum interrupter (in a closed state) for a miniaturized vacuum switching apparatus according to the present invention;

fig. 4 is a schematic diagram of a second embodiment of a vacuum interrupter (open state) for miniaturized vacuum switching devices according to the present invention;

fig. 5 is a third schematic structural view (grounded state) of a vacuum interrupter embodiment two for miniaturized vacuum switching devices according to the present invention.

Detailed Description

Example 1

The vacuum arc-extinguishing chamber for the miniaturized vacuum switching equipment described in the embodiment is a two-station vacuum arc-extinguishing chamber, and the specific structure is as follows.

As shown in fig. 1 and combined with fig. 2, the vacuum interrupter for miniaturized vacuum switch equipment of the present invention comprises a housing 2, wherein the housing 2 comprises a cylindrical housing main body and housing covers fixedly arranged at two ends of the housing main body, a fixed contact 15, a moving contact 14 and an insulating pull rod 11 are sequentially arranged in the housing 2 along the axial direction, the housing cover of the housing 2 close to the fixed contact 15 is a first housing cover 1, and the housing cover of the housing 2 close to the insulating pull rod 11 is a second housing cover 8. As shown in the figure, the housing 2 is arranged vertically, and a fixed contact 15, a moving contact 14 and an insulating pull rod 11 are sequentially arranged in the housing 2 from top to bottom in the vertical direction (i.e., axial direction). The shell cover at the upper end of the shell body is a first shell cover 1, and the shell cover at the lower end of the shell body is a second shell cover 8.

The utility model discloses a watchband, including shell 2, fixed connection, first casing cover 1 is last to be equipped with inlet wire end 16, the both ends of inlet wire end 16 are located the inside and outside of shell 2 respectively, the inside one end and the fixed contact 15 fixed connection of shell 2 of inlet wire end 16, fixedly connected with conducting rod 13 between moving contact 14 and the insulating pull rod 11, insulating pull rod 11 keep away from conducting rod 13 one end (i.e. lower extreme) fixedly connected with universal driving shaft 9, insulating pull rod 11 that keeps away from insulating pull rod 11 one end (i.e. lower extreme) passes second casing cover 8 and extends to the outside of shell 2, fixed being equipped with outlet wire end 12 on the shell main part, a part of outlet wire end 12 is located the inside of shell 2, another part of outlet wire end 12 is located the outside of shell 2, be equipped with the first through-hole 6 that supplies conducting rod 13 to pass on the inside part of shell 2 of outlet wire end 12, conducting rod 13 alternates and establishes in first through-hole 6, fixed contact 15 and moving contact 14 all are located between outlet wire end 12 and first casing cover 1, insulating pull rod 11 is located between outlet wire end 12 and second casing cover 8, the through-hole that can be equipped with the inner wall that can connect with conducting rod 13 with the inner wall 5 of watchband. The watchband contact finger 5 is a prior art, and has the function of conducting the electrical connection between the wire outlet end 12 and the conductive rod 13 when contacting with the inner wall of the first through hole 6 of the wire outlet end 12.

In this embodiment, the wire inlet end 16, the fixed contact 15, the moving contact 14, the conductive rod 13, the insulating pull rod 11 and the linkage shaft 9 are all coaxially arranged with the housing body.

The invention is used for a vacuum arc-extinguishing chamber of a miniaturized vacuum switch device, wherein the peripheries of a fixed contact 15 and a movable contact 14 are provided with a shielding cover 4, the shielding cover 4 is positioned in a shell 2 between a wire outlet end 12 and a first shell cover 1, the shielding cover 4 is in a cylindrical shape, the shielding cover 4 and a shell main body are coaxially arranged, and one end (namely, the lower end) of the shielding cover 4, which is close to the wire outlet end 12, is fixedly arranged on a part of the wire outlet end 12, which is positioned in the shell 2. The shielding case 4 functions as: when the switch is opened, the movable contact 14 is separated from the fixed contact 15, an arc is generated at the moment, and the shielding cover 4 can prevent the arc from damaging the inner wall of the shell 2.

The fixed contact 15, the moving contact 14 and the shielding case 4 form an arc extinguishing unit, so that the functions of a vacuum circuit breaker or a vacuum load switch can be met. The outgoing line end 12 and the watchband contact finger 5 form an outgoing line unit, so that the outgoing line end 12 can achieve the function of switching on and off, namely switching on when the outgoing line end 12 is connected with the incoming line end 16, and switching off when the outgoing line end 12 is separated from the incoming line end 16.

The invention is used for a vacuum arc-extinguishing chamber of a miniaturized vacuum switch device, wherein a corrugated pipe 10 is sleeved outside the linkage shaft 9, the corrugated pipe 10 is positioned in the shell 2, one end (i.e. the lower end) of the corrugated pipe 10 is fixedly connected to a second shell cover 8, and the other end (i.e. the upper end) of the corrugated pipe 10 is fixedly connected to the linkage shaft 9. The bellows 10 has the effect of ensuring the tightness of the interior of the housing 2 without affecting the movement of the linkage shaft 9.

In this embodiment, the insulating tie rod 11 performs insulating isolation so that the linkage shaft 9 reaches zero potential, thereby achieving full insulation and full shielding of the charged body.

The invention is used for the vacuum arc extinguishing chamber of the miniaturized vacuum switching equipment, wherein the wire inlet end 16 and the wire outlet end 12 are made of red copper materials. The fixed contact 15 and the moving contact 14 are made of copper-chromium alloy materials. The shell 2 is made of ceramic or glass materials, and the insulating pull rod 11 is made of ceramic materials. The shielding case 4 is made of stainless steel materials, and the watchband contact fingers 5 are made of beryllium bronze materials. The bellows 10 is made of stainless steel material, and the linkage shaft 9 is made of copper or stainless steel material.

In this embodiment, the housing main body includes an upper housing main body 3 and a lower housing main body 7 which are sequentially arranged along the up-down direction, the upper housing main body 3 and the lower housing main body 7 are both cylindrical, the upper end of the upper housing main body 3 is fixedly provided with a first housing cover 1, the lower end of the upper housing main body 3 is fixedly provided on the wire outlet end 12, the upper end of the lower housing main body 7 is fixedly provided on the wire outlet end 12, and the lower end of the lower housing main body 7 is fixedly provided with a second housing cover 8.

The vacuum arc-extinguishing chamber for the miniaturized vacuum switch equipment is different from the prior art in that the vacuum arc-extinguishing chamber comprises a shell 2, wherein a fixed contact 15, a movable contact 14 and an insulating pull rod 11 are arranged in the shell 2, a wire inlet end 16 and a wire outlet end 12 are also arranged on the shell 2, the wire inlet end 16 is fixedly connected with the fixed contact 15, a conductive rod 13 is fixedly connected between the movable contact 14 and the insulating pull rod 11, the conductive rod 13 is inserted into a first through hole 6 of the wire outlet end 12, the insulating pull rod 11 is fixedly connected with a linkage shaft 9, and one end, far away from the insulating pull rod 11, of the linkage shaft 9 extends to the outside of the shell 2. As shown in fig. 1, when the switch is closed, the linkage shaft 9 is operated, so that the linkage shaft 9, the insulating pull rod 11, the conductive rod 13 and the movable contact 14 move together towards the fixed contact 15 until the movable contact 14 contacts with the fixed contact 15 (i.e. the two contacts) and the watchband contact finger 5 on the conductive rod 13 contacts with the inner wall of the first through hole 6 (i.e. the two contacts) at the moment, and thus the wire outlet end 12 sequentially passes through the watchband contact finger 5, the conductive rod 13, the movable contact 14 and the fixed contact 15 and is connected with the wire inlet end 16, and the switch-on between the wire outlet end 12 and the wire inlet end 16 is completed; as shown in fig. 2, when the disconnection (isolation) is performed, the linkage shaft 9 is operated, so that the linkage shaft 9, the insulation pull rod 11, the conductive rod 13 and the moving contact 14 move together away from the fixed contact 15, and then the moving contact 14 and the fixed contact 15 are separated, so that the wire outlet end 12 is separated from the wire inlet end 16, and the disconnection between the wire outlet end 12 and the wire inlet end 16 is completed. Therefore, the switching device of the arc extinguishing chamber has the advantages of simple structure, small volume and low cost, and can generate economic benefit; besides, the insulating pull rod 11 is arranged in the vacuum arc-extinguishing chamber, so that the technical problem that the primary charged component of the solid insulating switch equipment is placed in the air and cannot be truly solid insulating is fundamentally solved, and the problem of solid insulating switch is completely and truly solved, namely, the solid insulating is to cast and seal the primary charged component integrally by adopting solid materials. The invention brings miniaturization, safety and reliability to the switch equipment, and truly realizes solid insulation.

Example two

The difference of the present embodiment from the first embodiment is that the ground moving contact 20 and the ground fixed contact 21 are added, that is, the vacuum interrupter for the miniaturized vacuum switching apparatus described in the present embodiment is a three-station vacuum interrupter, and the specific structure is as follows.

In the prior art, the three-station function is generally realized by connecting two vacuum arc-extinguishing chambers in series or connecting one vacuum arc-extinguishing chamber in series with one three-station switch, so that the problems of large volume, high cost, complex structure and the like are brought. The present embodiment can solve the problems existing in the prior art described above.

As shown in fig. 3, and in combination with fig. 4 and 5, on the basis of the structure based on the first embodiment, a ground moving contact 20 and a ground fixed contact 21 are added, specifically: the shell body is fixedly provided with a grounding fixed contact 21, one part of the grounding fixed contact 21 is located inside the shell 2, the other part of the grounding fixed contact 21 is located outside the shell 2, a second through hole 22 for a conducting rod 13 to pass through is formed in the part of the grounding fixed contact 21 located inside the shell 2, the conducting rod 13 is inserted into the second through hole 22, the grounding fixed contact 21 is arranged closer to the second shell cover 8 relative to the wire outlet end 12, namely, as shown in the drawing, the grounding fixed contact 21 is located below the wire outlet end 12, the insulating pull rod 11 is located between the grounding fixed contact 21 and the second shell cover 8, a grounding movable contact 20 is fixedly arranged on the conducting rod 13, the grounding movable contact 20 is located between the grounding fixed contact 21 and the wire outlet end 12, and the outer diameter of the grounding movable contact 20 is larger than the aperture of the second through hole 22.

The invention provides a vacuum arc-extinguishing chamber for a miniaturized vacuum switch device, wherein the shell main body comprises a first sub-shell main body 17, a second sub-shell main body 18 and a third sub-shell main body 19, the first sub-shell main body 17, the second sub-shell main body 18 and the third sub-shell main body 19 are all cylindrical, the first sub-shell main body 17, the second sub-shell main body 18 and the third sub-shell main body 19 are sequentially arranged along the up-down direction, one end (i.e. the upper end) of the first sub-shell main body 17 is fixedly provided with a first shell cover 1, the other end (i.e. the lower end) of the first sub-shell main body 17 is fixedly provided with a wire outlet end 12, the two ends of the second sub-shell main body 18 are fixedly provided with a wire outlet end 12 and a grounding static contact 21 (i.e. the upper end of the second sub-shell main body 18 is fixedly provided with the wire outlet end 12), the lower end (i.e. the upper end) of the second sub-shell main body 18 is fixedly provided with the grounding static contact 21, and the other end (i.e. the lower end) of the third sub-shell main body 19 is fixedly provided with a second shell cover 8.

The outgoing line end 12 and the watchband contact finger 5 form an outgoing line unit, so that the outgoing line end 12 can achieve the switching-on and switching-off function. The grounding moving contact 20 and the grounding fixed contact 21 form grounding switching on/off, so that the function of grounding switching on/off can be achieved. When the outgoing line end 12 is connected with the incoming line end 16, the switching-on is performed; when the wire outlet end 12 is connected with the grounding static contact 21, the grounding is realized; when the wire outlet end 12 is not connected with the wire inlet end 16 nor the grounding static contact 21, the switch is opened.

In this embodiment, the ground moving contact 20 and the ground fixed contact 21 are both made of red copper material.

The vacuum arc-extinguishing chamber for the miniaturized vacuum switch equipment is different from the prior art in that the vacuum arc-extinguishing chamber comprises a shell 2, wherein a fixed contact 15, a movable contact 14 and an insulating pull rod 11 are arranged in the shell 2, a wire inlet end 16, a wire outlet end 12 and a grounding fixed contact 21 are also arranged on the shell 2, the wire inlet end 16 is fixedly connected with the fixed contact 15, a conductive rod 13 is fixedly connected between the movable contact 14 and the insulating pull rod 11, the conductive rod 13 is inserted into a first through hole 6 of the wire outlet end 12 and a second through hole 22 of the grounding fixed contact 21, the conductive rod 13 is also provided with a grounding movable contact 20, the insulating pull rod 11 is fixedly connected with a linkage shaft 9, and one end, far away from the insulating pull rod 11, of the linkage shaft 9 extends to the outside of the shell 2. As shown in fig. 3, when the switch is closed, the linkage shaft 9 is operated, so that the linkage shaft 9, the insulating pull rod 11, the conducting rod 13, the grounding moving contact 20 and the moving contact 14 move together towards the fixed contact 15 until the moving contact 14 contacts with the fixed contact 15 (namely, the two contacts are connected), and at the moment, the watchband contact finger 5 on the conducting rod 13 contacts with the inner wall of the first through hole 6 (namely, the two contacts are connected), so that the wire outlet 12 is connected with the wire inlet 16 through the watchband contact finger 5, the conducting rod 13, the moving contact 14 and the fixed contact 15 in sequence, and the switch-on between the wire outlet 12 and the wire inlet 16 is completed; as shown in fig. 4, when the switching-off (isolation) is performed, the linkage shaft 9 is operated to move the linkage shaft 9, the insulation pull rod 11, the conductive rod 13, the grounding moving contact 20 and the moving contact 14 together away from the fixed contact 15, so that the moving contact 14 and the fixed contact 15 are separated and the grounding moving contact 20 and the grounding fixed contact 21 are kept out of contact, and thus, the wire outlet 12 is not connected with the wire inlet 16 nor the grounding fixed contact 21, and the switching-off is completed; as shown in fig. 5, in the state of opening the switch, the linkage shaft 9 is continuously operated, so that the linkage shaft 9, the insulating pull rod 11, the conductive rod 13, the grounding moving contact 20 and the moving contact 14 move away from the fixed contact 15 until the grounding moving contact 20 is contacted with the grounding fixed contact 21 (namely, the grounding moving contact 20 does not pass through the second through hole 22 and only contacts with the grounding fixed contact 21 because the outer diameter of the grounding moving contact 20 is larger than the aperture of the second through hole 22), and the watchband contact finger 5 on the conductive rod 13 is still contacted with the inner wall of the first through hole 6 (namely, the watchband contact finger 5, the conductive rod 13 and the grounding moving contact 20 are connected with the grounding fixed contact 21 in sequence, so that grounding is completed). Therefore, the invention adopts one vacuum arc-extinguishing chamber to replace the prior structure of adopting two vacuum arc-extinguishing chambers in series or one vacuum arc-extinguishing chamber is connected with a three-station switch in series to realize the three-station function, has simple structure, small volume and low cost, and the switching equipment using the arc-extinguishing chamber can generate economic benefit; besides, the insulating pull rod 11 is arranged in the vacuum arc-extinguishing chamber, so that the technical problem that the primary charged component of the solid insulating switch equipment is placed in the air and cannot be truly solid insulating is fundamentally solved, and the problem of solid insulating switch is completely and truly solved, namely, the solid insulating is to cast and seal the primary charged component integrally by adopting solid materials. The invention brings miniaturization, safety and reliability to the switch equipment, and truly realizes solid insulation.

It should be noted that, the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "front", "rear", "left", "right", "middle", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the present invention.

Claims (10)

1. A vacuum interrupter for miniaturized vacuum switching equipment, characterized by: the shell comprises a shell body and a shell cover fixedly arranged at two ends of the shell body, a fixed contact, a moving contact and an insulating pull rod are sequentially arranged in the shell along the axial direction, the shell cover of the shell, which is close to the fixed contact, is a first shell cover, the shell cover of the shell, which is close to the insulating pull rod, is a second shell cover, a wire inlet end is fixedly arranged on the first shell cover, two ends of the wire inlet end are respectively positioned inside and outside the shell, one end of the wire inlet end, which is positioned inside the shell, is fixedly connected with the fixed contact, a conducting rod is fixedly connected between the moving contact and the insulating pull rod, one end of the insulating pull rod, which is far away from the conducting rod, is fixedly connected with a linkage shaft, one end of the linkage shaft, which is far away from the insulating pull rod, is extended to the outside the shell, an outlet end is fixedly arranged on the shell body, one part of the outlet end is positioned inside the shell, the other part of the outlet end is positioned outside the shell, a first through hole, through which the conducting rod passes through is arranged on the part of the shell, the outlet end, is inserted into the first through hole, the conducting rod is arranged between the first through hole, the static contact and the moving contact are both positioned between the moving contact and the first end, the wire inlet end and the first end, the conducting rod is positioned between the outer end and the first end, and the insulating pull rod can be connected with the first wire outlet end.

2. The vacuum interrupter for miniaturized vacuum switching equipment of claim 1, wherein: the periphery of the fixed contact and the movable contact is provided with a shielding cover, the shielding cover is positioned in the shell between the wire outlet end and the first shell cover, the shielding cover is cylindrical, the shielding cover and the shell body are coaxially arranged, and one end, close to the wire outlet end, of the shielding cover is fixedly arranged on the part, positioned in the shell, of the wire outlet end.

3. The vacuum interrupter for miniaturized vacuum switching equipment of claim 2, wherein: the outside cover of universal driving axle is equipped with the bellows, the bellows is located the shell inside, the one end fixed connection of bellows is covered at the second shell, the other end fixed connection of bellows is on the universal driving axle.

4. A vacuum interrupter for miniaturized vacuum switching devices according to claim 3, wherein: the shell is characterized in that a grounding fixed contact is fixedly arranged on the shell body, one part of the grounding fixed contact is located inside the shell, the other part of the grounding fixed contact is located outside the shell, a second through hole for a conducting rod to pass through is formed in the part, located inside the shell, of the grounding fixed contact, the conducting rod is inserted into the second through hole, the grounding fixed contact is arranged closer to a second shell cover relative to an outlet end, the insulating pull rod is located between the grounding fixed contact and the second shell cover, a grounding moving contact is fixedly arranged on the conducting rod, the grounding moving contact is located between the grounding fixed contact and the outlet end, and the outer diameter of the grounding moving contact is larger than the aperture of the second through hole.

5. The vacuum interrupter for miniaturized vacuum switching devices of claim 4, wherein: the shell main body comprises a first sub-shell main body, a second sub-shell main body and a third sub-shell main body, wherein the first sub-shell main body, the second sub-shell main body and the third sub-shell main body are all cylindrical, one end of the first sub-shell main body is fixedly provided with a first shell cover, the other end of the first sub-shell main body is fixedly arranged on an outgoing line end, two ends of the second sub-shell main body are respectively fixedly arranged on the outgoing line end and a grounding static contact, one end of the third sub-shell main body is fixedly arranged on the grounding static contact, and the other end of the third sub-shell main body is fixedly provided with a second shell cover.

6. The vacuum interrupter for miniaturized vacuum switching equipment of claim 5, wherein: the wire inlet end, the wire outlet end, the grounding movable contact and the grounding static contact are all made of red copper materials.

7. The vacuum interrupter for a miniaturized vacuum switching device of claim 6, wherein: the fixed contact and the moving contact are made of copper-chromium alloy materials.

8. The vacuum interrupter for miniaturized vacuum switching equipment of claim 7, wherein: the shell is made of ceramic or glass materials, and the insulating pull rod is made of ceramic materials.

9. The vacuum interrupter for miniaturized vacuum switching equipment of claim 8, wherein: the shielding cover is made of stainless steel materials, and the watchband contact fingers are made of beryllium bronze materials.

10. The vacuum interrupter for miniaturized vacuum switching equipment of claim 9, wherein: the corrugated pipe is made of stainless steel materials, and the universal driving shaft is made of copper or stainless steel materials.