阅读说明：本技术 一种安全耐冲击的真空灭弧室 (Safe and impact-resistant vacuum arc-extinguishing chamber ) 是由 周倜 王清华 欧阳飞 于 2021-10-15 设计创作，主要内容包括：本发明公开了一种安全耐冲击的真空灭弧室,具体涉及真空灭弧室技术领域,包括陶瓷外壳,所述陶瓷外壳的上表面与静端导电块的下表面固定连接,所述静端导电块的下表面设置有静端导电杆,所述静端导电杆的底端固定连接有静触头,所述陶瓷外壳内设置有动触头。本发明通过设置支架、定位丝杆螺母、挤压板、定位板和保持架,使得该真空灭弧室在安装完毕后不易出现接触不良的情况,且在装配完毕后,由于支撑杆可以有效的这个外界的物件接触陶瓷外壳,从而降低了外界硬物与灭弧室之间发生撞击导致其破碎漏气的情况发生,降低了该真空灭弧室因表面的裂痕导致其内部加热后出现破碎的情况发生,且在装配完毕后实际的使用过程中。(The invention discloses a safe and impact-resistant vacuum arc-extinguishing chamber, and particularly relates to the technical field of vacuum arc-extinguishing chambers. According to the invention, the bracket, the positioning screw rod nut, the extrusion plate, the positioning plate and the retainer are arranged, so that the vacuum arc-extinguishing chamber is not easy to have poor contact after being installed, and after the vacuum arc-extinguishing chamber is assembled, the supporting rod can effectively enable an external object to contact the ceramic shell, so that the situation that the vacuum arc-extinguishing chamber is broken and air leaks due to the fact that the external hard object collides with the arc-extinguishing chamber is reduced, the situation that the vacuum arc-extinguishing chamber is broken after being heated due to surface cracks is reduced, and the vacuum arc-extinguishing chamber is actually used after being assembled.)

1. The utility model provides a safe shock-resistant vacuum interrupter, includes ceramic package (1), its characterized in that: the upper surface of the ceramic shell (1) is fixedly connected with the lower surface of a static end conductive block (2), a static end conductive rod (3) is arranged on the lower surface of the static end conductive block (2), a static contact (4) is fixedly connected with the bottom end of the static end conductive rod (3), a moving contact (6) is arranged in the ceramic shell (1), the moving contact (6) is positioned below the static contact (4), a connecting device (7) is fixedly connected with the lower surface of the moving contact (6), the outer surface of the connecting device (7) is clamped in a moving end cover plate (8), the moving end cover plate (8) is clamped on the lower surface of the ceramic shell (1), a support (9) is fixedly connected with the lower surface of the moving end cover plate (8), the moving end cover plate (8) is fixedly connected with the upper surface of a positioning screw rod nut (10) through the support (9), and a moving conductive rod (11) is in threaded connection with the positioning screw rod nut (10), move a plurality of holder (12) of lower fixed surface of end cover board (8), the front and the back of the inner wall of holder (12) respectively with the positive one end of pivot (14) and the one end fixed connection at the back, bearing (13) have been cup jointed to the surface of pivot (14), the outer fixed surface of bearing (13) is connected with adjusts pole (15), the last fixed surface who adjusts pole (15) is connected with bracing piece (16), and the equal fixedly connected with locating plate (17) in top of a plurality of bracing piece (16).

2. A safe and impact-resistant vacuum interrupter as claimed in claim 1, characterized in that: the right flank of locating plate (17) is laminated with the surface of ceramic package (1) mutually, adjust right-hand member fixedly connected with stripper plate (24) of pole (15), stripper plate (24) are located the top of positioning screw nut (10), the lower fixed surface of stripper plate (24) is connected with and keeps piece (25), the upper surface that keeps piece (25) sets up to the inclined plane, the left surface that keeps piece (25) and the right-hand member fixed connection who adjusts pole (15).

3. A safe and impact-resistant vacuum interrupter as claimed in claim 1, characterized in that: the opposite surfaces of the static contact (4) and the moving contact (6) are fixedly connected with sliding sleeves (20), sliding rods (19) are slidably connected in the two sliding sleeves (20), and one ends of the opposite surfaces of the two sliding rods (19) are fixedly connected with one surfaces, far away from the two contact assemblies (5), of the opposite surfaces respectively.

4. A safe and impact-resistant vacuum interrupter as claimed in claim 3, characterized in that: the spring is arranged in the sliding sleeve (20), a plurality of guide pipes (21) are fixedly connected to the outer surface of the sliding sleeve (20), the sliding sleeve (20) is respectively communicated with a plurality of protective shells (22) through the plurality of guide pipes (21), and the lower surface of each protective shell (22) and the outer surface of each guide pipe (21) are fixedly connected with the upper surface of the corresponding movable contact (6).

5. A safe and impact-resistant vacuum interrupter as claimed in claim 4, characterized in that: the upper surface of protecting crust (22) has been seted up the mounting hole, the mounting hole internal fixation that protecting crust (22) upper surface was seted up has inflation piece (23), inflation piece (23) are linked together through protecting crust (22) and pipe (21), inflation piece (23) set up to high temperature resistant inflation piece, sliding sleeve (20) and slide bar (19) all adopt the copper chromium alloy to make.

6. A safe and impact-resistant vacuum interrupter as claimed in claim 1, characterized in that: the outer surface of the positioning plate (17) is set to be an arc surface, the outer surface of the positioning plate (17) is provided with anti-skid lines, a shielding cylinder (18) is arranged in the ceramic shell (1), and reinforcing plates (26) are fixedly connected to the left side surface and the right side surface of the inner wall of the plurality of retainers (12).

7. A safe and impact-resistant vacuum interrupter as claimed in claim 1, characterized in that: the connecting device (7) comprises a movable end conducting rod (71), the top end of the movable end conducting rod (71) is fixedly connected with the lower surface of the movable contact (6), the bottom end of the movable end conducting rod (71) is fixedly connected with the top end of a corrugated pipe (72), and the corrugated pipe (72) is clamped in the movable end cover plate (8).

Technical Field

The invention relates to the technical field of vacuum arc-extinguishing chambers, in particular to a safe and impact-resistant vacuum arc-extinguishing chamber.

Background

With the continuous development of the power industry and the improvement of the environmental protection requirements of the society, the vacuum arc-extinguishing chamber is developing towards the direction of high-voltage power transmission and distribution, and the switch equipment applying the vacuum arc-extinguishing chamber is also developing towards high voltage and miniaturization. The volume of the vacuum interrupter is an important factor for the overall volume of the switchgear, and therefore, high voltage and miniaturization of the vacuum interrupter are fundamental to miniaturization of the switchgear.

Most vacuum interrupter is at present when actual assembly, need to touch direct mount between upper end main contact and last arc contact through the watchband, however after the installation finishes, then need assemble vacuum interrupter wholly, however, the axial is to its back of finishing of installation, often need fix a position it through welding or other modes, lead to this vacuum interrupter to appear the dislocation easily at the in-process of assembly or the bad condition of contact, lead to taking place to strike between external hard thing and the explosion chamber at the in-process of assembly and lead to its broken condition of leaking gas to take place, and reduced because aluminium porcelain spare shell fish tail and lead to breaking the easy broken condition emergence of back pottery after being heated in-process.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a safe and impact-resistant vacuum arc-extinguishing chamber, and the technical problems to be solved by the invention are as follows: most vacuum interrupter is at present when actual assembly, need to touch direct mount between upper end main contact and last arc contact through the watchband, however after the installation finishes, then need assemble vacuum interrupter wholly, however, the axial is to its back of finishing of installation, often need fix a position it through welding or other modes, lead to this vacuum interrupter to appear the dislocation easily at the in-process of assembly or the bad condition of contact, lead to taking place to strike between external hard thing and the explosion chamber at the in-process of assembly and lead to its broken condition of leaking gas to take place, and reduced because aluminium porcelain spare shell fish tail and lead to breaking the easy broken problem of back that the in-process pottery is heated.

In order to achieve the purpose, the invention provides the following technical scheme: a safe impact-resistant vacuum arc-extinguishing chamber comprises a ceramic shell, wherein the upper surface of the ceramic shell is fixedly connected with the lower surface of a static end conducting block, a static end conducting rod is arranged on the lower surface of the static end conducting block, a static contact is fixedly connected to the bottom end of the static end conducting rod, a moving contact is arranged in the ceramic shell and located below the static contact, a connecting device is fixedly connected to the lower surface of the moving contact, the outer surface of the connecting device is clamped in a moving end cover plate, the moving end cover plate is clamped on the lower surface of the ceramic shell, a support is fixedly connected to the lower surface of the moving end cover plate, the moving end cover plate is fixedly connected with the upper surface of a positioning screw nut through the support, a moving conducting rod is connected in a threaded manner in the positioning screw nut, a plurality of retainers are fixedly connected to the lower surface of the moving end cover plate, and the front surface and the back surface of the inner wall of each retainer are fixedly connected with one end of the front surface and one end of the back surface of a rotating shaft respectively, the bearing has been cup jointed to the surface of pivot, the fixed surface of bearing is connected with the regulation pole, the last fixed surface of adjusting the pole is connected with the bracing piece, and the equal fixedly connected with locating plate in top of a plurality of bracing piece.

As a further scheme of the invention: the right side face of the positioning plate is attached to the outer surface of the ceramic shell, the right end of the adjusting rod is fixedly connected with an extrusion plate, the extrusion plate is located above the positioning screw rod nut, the lower surface of the extrusion plate is fixedly connected with a retaining block, the upper surface of the retaining block is an inclined plane, and the left side face of the retaining block is fixedly connected with the right end of the adjusting rod.

As a further scheme of the invention: the opposite surfaces of the static contact and the moving contact are fixedly connected with sliding sleeves, sliding rods are connected in the two sliding sleeves in a sliding mode, and one ends of the opposite surfaces of the two sliding rods are fixedly connected with one surface, far away from the two contact assemblies, of the opposite surface.

As a further scheme of the invention: the movable contact is characterized in that a spring is arranged in the sliding sleeve, a plurality of guide pipes are fixedly connected to the outer surface of the sliding sleeve, the sliding sleeve is respectively communicated with a plurality of protective shells through the plurality of guide pipes, and the lower surfaces of the protective shells and the outer surfaces of the guide pipes are fixedly connected with the upper surface of the movable contact.

As a further scheme of the invention: the upper surface of the protective shell is provided with a mounting hole, an expansion block is fixedly connected in the mounting hole formed in the upper surface of the protective shell, the expansion block is communicated with the guide pipe through the protective shell, the expansion block is a high-temperature-resistant expansion block, and the sliding sleeve and the sliding rod are both made of copper-chromium alloy.

As a further scheme of the invention: the outer surface of the positioning plate is set to be a cambered surface, anti-skid lines are arranged on the outer surface of the positioning plate, a shielding cylinder is arranged in the ceramic shell, and reinforcing plates are fixedly connected to the left side face and the right side face of the inner wall of the plurality of retainers.

As a further scheme of the invention: the connecting device comprises a movable end conducting rod, the top end of the movable end conducting rod is fixedly connected with the lower surface of the movable contact, the bottom end of the movable end conducting rod is fixedly connected with the top end of the corrugated pipe, and the corrugated pipe is clamped in the movable end cover plate.

The invention has the beneficial effects that:

1. by arranging the bracket, the positioning screw rod nut, the extrusion plate, the positioning plate and the retainer, when the movable conducting rod passes through the positioning screw rod nut and is contacted with the extrusion plate, the extrusion plate can move upwards, the adjusting rod can turn over along the rotating shaft along with the movement of the extrusion plate, at the moment, a plurality of supporting rods can incline along with the rotation of the adjusting rod, and along with the movement of the supporting rods, the positioning plate can be separated from the surface of the ceramic shell and is contacted with the inner wall of the pipeline at the installation part, so that the vacuum arc-extinguishing chamber can be assisted in positioning by the positioning plate on the surface in the installation process, the dislocation of the vacuum arc-extinguishing chamber caused by touch or extrusion in the subsequent assembly process is reduced, the vacuum arc-extinguishing chamber is difficult to have poor contact after the installation, and after the assembly is finished, because the plurality of supporting rods are arranged on the surface of the ceramic shell, the supporting rod can effectively enable the external object to contact the ceramic shell, so that the situation that the external hard object is broken and air is leaked due to collision between the external hard object and the arc-extinguishing chamber is reduced, the ceramic shell is not easy to crack due to collision on the surface, the situation that the vacuum arc-extinguishing chamber is broken after the vacuum arc-extinguishing chamber is heated due to cracks on the surface is reduced, and the ceramic shell is actually used after being assembled;

2. by arranging the sliding sleeve, the sliding rod and the expansion block, when the sliding sleeve is disconnected with a certain value of current, the current contracts to a point where the moving contact and the static contact are just separated at the moment that the moving contact and the static contact are separated, the resistance between electrodes is increased sharply and the temperature is increased rapidly until the evaporation of electrode metal occurs, and when the moving contact and the static contact are contacted again, the sliding rod contracts inwards the sliding sleeve due to the contact of the moving contact and the static contact, at the moment, the sliding rod extrudes gas in the sliding sleeve into the expansion block, so that the expansion block is contacted with the moving contact and the static contact in the expansion process, thereby reducing the impact force when the moving contact and the static contact are contacted, and simultaneously, after the moving contact and the static contact are completely, the pressure at the two ends of the moving contact and the static contact and the elastic force of a spring in the sliding sleeve can ensure the stability when the two contact components are contacted, thereby reducing the occurrence of poor contact of the vacuum interrupter.

Drawings

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

FIG. 2 is a schematic three-dimensional cross-sectional structure of a ceramic case according to the present invention;

FIG. 3 is a schematic cross-sectional view of the front view of the present invention;

fig. 4 is a three-dimensional structural schematic diagram of the moving contact of the present invention;

FIG. 5 is a schematic perspective view of an adjusting lever according to the present invention;

in the figure: the device comprises a ceramic shell 1, a static end conducting block 2, a static end conducting rod 3, a static contact 4, a contact assembly 5, a movable contact 6, a connecting device 7, a movable end conducting rod 71, a movable end conducting rod 72, a movable end cover plate 8, a support 9, a positioning screw rod nut 10, a movable conducting rod 11, a retainer 12, a bearing 13, a rotating shaft 14, a regulating rod 15, a supporting rod 16, a positioning plate 17, a shielding cylinder 18, a sliding rod 19, a sliding sleeve 20, a guide pipe 21, a protective shell 22, an expansion block 23, an extrusion plate 24, a holding block 25 and a reinforcing plate 26.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in FIGS. 1-5, the invention provides a safe and impact-resistant vacuum arc-extinguishing chamber, which comprises a ceramic shell 1, wherein the upper surface of the ceramic shell 1 is fixedly connected with the lower surface of a static end conducting block 2, the lower surface of the static end conducting block 2 is provided with a static end conducting rod 3, the bottom end of the static end conducting rod 3 is fixedly connected with a static contact 4, a moving contact 6 is arranged in the ceramic shell 1, the moving contact 6 is positioned below the static contact 4, the lower surface of the moving contact 6 is fixedly connected with a connecting device 7, the outer surface of the connecting device 7 is clamped in a moving end cover plate 8, the moving end cover plate 8 is clamped on the lower surface of the ceramic shell 1, the lower surface of the moving end cover plate 8 is fixedly connected with a bracket 9, the moving end cover plate 8 is fixedly connected with the upper surface of a positioning screw nut 10 through the bracket 9, the positioning screw nut 10 is internally threaded with a moving conducting rod 11, the lower surface of the moving end cover plate 8 is fixedly connected with a plurality of retainers 12, the front and the back of the inner wall of the retainer 12 are respectively and fixedly connected with the front end and the back end of the rotating shaft 14, the bearing 13 is sleeved on the outer surface of the rotating shaft 14, the adjusting rod 15 is fixedly connected on the outer surface of the bearing 13, the supporting rod 16 is fixedly connected on the upper surface of the adjusting rod 15, the positioning plates 17 are fixedly connected on the top ends of the plurality of supporting rods 16, the support 9, the positioning screw nut 10, the extrusion plate 24, the positioning plate 17 and the retainer 12 are arranged, so that the vacuum arc-extinguishing chamber can play an auxiliary positioning effect on the vacuum arc-extinguishing chamber through the positioning plate 17 on the surface of the vacuum arc-extinguishing chamber in the installation process, the situation that the vacuum arc-extinguishing chamber is misplaced due to touch or extrusion is reduced in the subsequent assembly process, the situation that the vacuum arc-extinguishing chamber is not prone to poor contact after the installation is finished, and after the assembly is finished, because the plurality of supporting rods 16 are arranged on the surface of the ceramic shell 1, make bracing piece 16 can effectual this external article contact ceramic package 1 to it takes place to have reduced the condition that takes place the striking and lead to its broken gas leakage between external hard thing and the explosion chamber, make ceramic package 1 be difficult for receiving the collision and produce the fracture because of the surface, reduced this vacuum interrupter because of the fracture on surface leads to the broken condition emergence of appearance after its inside heating, and in the actual use after the assembly finishes.

As shown in fig. 1, 3 and 5, the right side surface of the positioning plate 17 is attached to the outer surface of the ceramic housing 1, the right end of the adjusting rod 15 is fixedly connected with an extrusion plate 24, the extrusion plate 24 is located above the positioning screw nut 10, the lower surface of the extrusion plate 24 is fixedly connected with a retaining block 25, the upper surface of the retaining block 25 is an inclined surface, the left side surface of the retaining block 25 is fixedly connected with the right end of the adjusting rod 15, the opposite surfaces of the fixed contact 4 and the movable contact 6 are fixedly connected with sliding sleeves 20, the two sliding sleeves 20 are respectively and slidably connected with sliding rods 19, and one ends of the opposite surfaces of the two sliding rods 19 are respectively and fixedly connected with the surfaces far away from the two contact assemblies 5, because of the sliding rods 19 and the sliding sleeves 20, when the two contact assemblies 5 are in contact, the two contact assemblies 5 can respectively extrude the gas in the two sliding sleeves 20 into the protective shell 22, thereby reducing the speed of the two contacts, the service life of the contact assembly 5, the moving contact 6 and the static contact 4 is guaranteed.

As shown in fig. 1, 4 and 5, a spring is disposed in the sliding sleeve 20, a plurality of conduits 21 are fixedly connected to an outer surface of the sliding sleeve 20, the sliding sleeve 20 is respectively communicated with a plurality of protective shells 22 through the plurality of conduits 21, a lower surface of each protective shell 22 and an outer surface of each conduit 21 are both fixedly connected to an upper surface of the corresponding movable contact 6, a mounting hole is formed in an upper surface of each protective shell 22, an expansion block 23 is fixedly connected to each mounting hole formed in the upper surface of each protective shell 22, the expansion block 23 is communicated with the conduits 21 through the corresponding protective shell 22, and by arranging the sliding sleeve 20, the sliding rod 19 and the expansion block 23, the expansion block 23 is in contact with the movable contact 6 and the fixed contact 4 in an expansion process, so as to reduce an impact force when the movable contact 6 is in contact with the fixed contact 4, and simultaneously, after the movable contact 6 is in contact with the fixed contact 4, pressure at two ends of the movable contact 6 and the fixed contact 4 and elasticity of the spring inside the sliding sleeve 20 can ensure stability when the two contact assemblies 5 are in contact, therefore, the situation that the vacuum arc-extinguishing chamber is in poor contact is reduced, the expansion block 23 is set to be a high-temperature-resistant expansion block, and the sliding sleeve 20 and the sliding rod 19 are both made of copper-chromium alloy.

As shown in fig. 1, 2 and 3, the outer surface of the positioning plate 17 is a cambered surface, the outer surface of the positioning plate 17 is provided with anti-skid lines, the ceramic shell 1 is internally provided with a shielding cylinder 18, the left and right side surfaces of the inner walls of the plurality of retainers 12 are fixedly connected with the reinforcing plates 26, the connecting device 7 comprises a movable end conducting rod 71, the top end of the movable end conducting rod 71 is fixedly connected with the lower surface of the movable contact 6, the bottom end of the movable end conducting rod 71 is fixedly connected with the top end of the corrugated pipe 72, and the corrugated pipe 72 is clamped in the movable end cover plate 8.

The working principle of the invention is as follows: when the vacuum arc-extinguishing chamber is used, the vacuum arc-extinguishing chamber is only required to be installed to a proper position and moves along the axial direction of a pipeline at the installation position, after the movement is finished, the movable conducting rod 11 is connected with the positioning screw nut 10, when the movable conducting rod 11 passes through the positioning screw nut 10 and contacts with the extrusion plate 24, the extrusion plate 24 moves upwards, the adjusting rod 15 can turn over along the rotating shaft 14 along with the movement of the extrusion plate 24, at the moment, a plurality of supporting rods 16 can incline along with the rotation of the adjusting rod 15, and along with the movement of the supporting rods 16, the positioning plate 17 can be separated from the surface of the ceramic shell 1 and contacts with the inner wall of the pipeline at the installation position, so that the vacuum arc-extinguishing chamber can play an auxiliary positioning effect on the vacuum arc-extinguishing chamber through the positioning plate 17 on the surface of the vacuum arc-extinguishing chamber, when the vacuum arc-extinguishing chamber cuts off a certain value of current, the movable contact 6 and the fixed contact 4 are separated at the moment, the current contracts to a point where the movable contact 6 and the static contact 4 are just separated, the resistance between the electrodes is increased sharply, the temperature is increased rapidly until the electrode metal is evaporated, and when the movable contact 6 and the static contact 4 are contacted again, the sliding rod 19 contracts into the sliding sleeve 20 due to the contact of the movable contact 6 and the static contact 4, at the moment, the sliding rod 19 extrudes the gas in the sliding sleeve 20 into the expansion block 23, so that the expansion block 23 is contacted with the movable contact 6 and the static contact 4 in the expansion process.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.