CN217182645U - Shaft sealing structure for column box type high-voltage switch - Google Patents
Shaft sealing structure for column box type high-voltage switch Download PDFInfo
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- CN217182645U CN217182645U CN202123137226.0U CN202123137226U CN217182645U CN 217182645 U CN217182645 U CN 217182645U CN 202123137226 U CN202123137226 U CN 202123137226U CN 217182645 U CN217182645 U CN 217182645U
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Abstract
The utility model provides a shaft sealing structure for a column box type high-voltage switch, which comprises a first shaft sleeve, a second shaft sleeve, a fastening bolt and a connecting shaft; the inner diameters of the first shaft sleeve and the second shaft sleeve are the same as the outer diameter of the connecting shaft, and the connecting shaft sequentially penetrates through the second shaft sleeve and the first shaft sleeve to enter a box body of the high-voltage switch to drive the transmission part; the fastening bolt sequentially penetrates through the bolt hole and the fixing hole and is used for fixing the first shaft sleeve and the second shaft sleeve on the wall of the high-voltage switch box; the shaft sealing structure for the column box type high-voltage switch can ensure the waterproof performance of the box body of the high-voltage switch by utilizing the embedding effect between the first shaft connecting part of the first shaft sleeve and the box body wall of the high-voltage switch on the premise of not influencing the free rotation of the connecting shaft under the driving of the operating handle; meanwhile, the first shaft sleeve and the second shaft sleeve can be fixed on the wall of the high-voltage switch box body through fastening bolts, and the airtightness between the first shaft sleeve and the box body is further guaranteed.
Description
Technical Field
The utility model relates to a high tension switchgear technical field especially relates to an axle seal structure for post case formula high tension switchgear.
Background
The high-voltage switch (or called high-voltage circuit breaker) not only can cut off or close the no-load current and load current in the high-voltage circuit, but also can cut off the overload current and short-circuit current by the action of the relay protection device when the system is in fault, and has rather perfect arc extinguishing structure and enough current breaking capacity. Existing high-voltage switches are mainly classified into two categories: strut-type high-voltage switches and box-type high-voltage switches. No matter the support column type high-voltage switch or the box type high-voltage switch, a shaft sealing structure is needed on a control box body, and the sealing structure adopted by the existing high-voltage switch generally adopts a mode that a shaft is fixed on the box body by a copper sleeve to realize sealing. Because the axle is operating handle and pointer with external connection, with internal connection be operating mechanism, the complete machine error is great during the assembly, in order to improve the yield, increase the clearance between axle and the axle sleeve usually, it is sealed not have the problem under the ordinary pressure, but when using as outdoor product, receive outside temperature variation's influence, inside and outside production pressure differential can lead to high-voltage switch's leakproofness to worsen, outside air and water enter into inside the box, cause inside spare part to rust to reduce the life of product. Therefore, a special shaft sealing structure needs to be designed to realize reliable sealing of the high-voltage switch connecting shaft, and the adaptability of the high-voltage switch to the environment is improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a shaft seal structure for box high tension switchgear of post to make the high tension switchgear who uses this shaft seal structure even can guarantee fine leakproofness also in the open air.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a shaft sealing structure for a column box type high-voltage switch comprises a first shaft sleeve, a second shaft sleeve, a fastening bolt and a connecting shaft; the inner diameters of the first shaft sleeve and the second shaft sleeve are the same as the outer diameter of the connecting shaft, and the connecting shaft sequentially penetrates through the second shaft sleeve and the first shaft sleeve to enter a box body of the high-voltage switch to drive the transmission part;
the first shaft sleeve comprises a cylindrical first shaft connecting part and a first fixing part which radially and outwards extends from the end part of the first shaft connecting part, the first shaft connecting part is embedded in the wall of the high-voltage switch box, the first fixing part is contacted with the outer side of the wall of the high-voltage switch box, and symmetrical fixing holes are formed in the first fixing part;
the second shaft sleeve comprises a cylindrical second shaft connecting part and a second fixing part which radially and outwardly extends from the end part of the second shaft connecting part, the second shaft connecting part and the inner cavity of the first shaft connecting part form a connecting shaft channel, and a bolt hole is formed in the position, corresponding to the fixing hole, of the second fixing part;
and the fastening bolt sequentially penetrates through the bolt hole and the fixing hole and is used for fixing the first shaft sleeve and the second shaft sleeve on the wall of the high-voltage switch box.
The connecting shaft is provided with a plurality of annular shaft grooves, and annular shaft bulges matched with the annular shaft grooves are arranged at the corresponding positions of the inner walls of the first shaft connecting part or/and the second shaft connecting part.
The plurality of annular shaft grooves have different widths.
The contact surfaces of the first fixing part and the second fixing part are matched through the matched annular fixing groove and the matched annular fixing bulge.
The contact surface of the first fixing part is provided with an annular fixing groove, and the corresponding position of the contact surface of the second fixing part is provided with an annular fixing bulge.
And a matched O-shaped sealing ring is arranged in the annular fixed groove.
The middle part of the connecting shaft is provided with an annular connecting shaft bulge, and an annular connecting shaft groove matched with the annular connecting shaft bulge is formed in the corresponding position of the inner wall of the first shaft connecting part.
The height of the annular connecting shaft groove is higher than the height of the annular connecting shaft, and the annular connecting shaft groove is higher than the part of the annular connecting shaft, which is raised, and is filled with silicone grease.
Compared with the prior art, the beneficial effects of the utility model are that:
the shaft sealing structure for the column box type high-voltage switch can ensure the waterproof performance of the box body of the high-voltage switch by utilizing the embedding effect between the first shaft connecting part of the first shaft sleeve and the box body wall of the high-voltage switch on the premise of not influencing the free rotation of the connecting shaft under the driving of the operating handle; meanwhile, the first shaft sleeve and the second shaft sleeve can be fixed on the wall of the high-voltage switch box body through fastening bolts, and the airtightness between the first shaft sleeve and the box body is further guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1: the utility model discloses a shaft seal structure for column box type high-voltage switch, which comprises a first shaft sleeve 1, a second shaft sleeve 2, a fastening bolt 4 and a connecting shaft 3; the inner diameters of the first shaft sleeve 1 and the second shaft sleeve 2 are the same as the outer diameter of the connecting shaft 3, and the connecting shaft 3 sequentially penetrates through the second shaft sleeve 2 and the first shaft sleeve 1 to enter a box body driving transmission part of the high-voltage switch; the first shaft sleeve 1 comprises a cylindrical first shaft connecting part 11 and a first fixing part 12 which radially extends outwards from the end part of the first shaft connecting part 11, the first shaft connecting part 11 is embedded in the wall of the high-voltage switch box, the first fixing part 12 is contacted with the outer side of the wall of the high-voltage switch box, and symmetrical fixing holes are formed in the first fixing part 12; the second shaft sleeve comprises a cylindrical second shaft connecting part 21 and a second fixing part 22 which radially extends outwards from the end part of the second shaft connecting part 21, the second shaft connecting part 21 and the inner cavity of the first shaft connecting part 11 form a connecting shaft 3 channel, and a bolt hole is formed in the position, corresponding to the fixing hole, of the second fixing part 22; and the fastening bolt 4 sequentially penetrates through the bolt hole and the fixing hole and is used for fixing the first shaft sleeve 1 and the second shaft sleeve 2 on the wall of the high-voltage switch box.
The shaft sealing structure for the column box type high-voltage switch provided by the utility model can ensure the waterproof performance of the box body of the high-voltage switch by utilizing the embedding effect between the first axial connection part 11 of the first shaft sleeve 1 and the box body wall of the high-voltage switch on the premise of not influencing the free rotation of the connecting shaft 3 under the driving of the operating handle; meanwhile, the first shaft sleeve 1 and the second shaft sleeve 2 can be fixed on the wall of the high-voltage switch box body through the fastening bolts 4, and the airtightness between the first shaft sleeve 1 and the box body is further guaranteed.
Preferably: a plurality of annular shaft grooves are formed in the connecting shaft 3, and annular shaft protrusions B matched with the annular shaft grooves are formed in the corresponding positions of the inner walls of the first shaft connecting part 11 or/and the second shaft connecting part 21; the setting of the protruding B of annular axle recess and matching can become the sharp infiltration passageway between connecting axle 3 and first junction of shafts portion 11 or/and the 21 inner walls of second junction of shafts portion curve (notch cuttype) infiltration passageway, further guaranteed connecting axle 3 with first axle sleeve 1 and second axle sleeve 2 between waterproof performance, and then the effectual waterproof performance who improves high voltage switch's box.
Preferably: the width of the plurality of annular shaft grooves is different, so that the waterproof performance between the connecting shaft 3 and the first shaft sleeve 1 and the second shaft sleeve 2 is further ensured, and the waterproof performance of the box body of the high-voltage switch is effectively improved.
Preferably: the contact surfaces of the first fixing part 12 and the second fixing part 22 are matched with each other through a matched annular fixing groove and an annular fixing bulge C; preferably: an annular fixing groove is formed in the contact surface of the first fixing part 12, and an annular fixing protrusion C is arranged at the position corresponding to the contact surface of the second fixing part 22; the setting of the annular fixed recess and the annular fixed bulge C of matching can become the sharp infiltration passageway between the contact surface of first fixed part 12 and second fixed part 22 curve (notch cuttype) infiltration passageway, has further guaranteed the waterproof performance between the contact surface of first fixed part 12 and second fixed part 22, and then the effectual waterproof performance who improves high voltage switch's box.
Preferably: and matched O-shaped sealing rings are arranged in the annular fixing grooves, so that the waterproof performance between the contact surfaces of the first fixing part 12 and the second fixing part 22 is further ensured, and the waterproof performance of the box body of the high-voltage switch is effectively improved.
Preferably: the middle part of the connecting shaft 3 is provided with an annular connecting shaft protrusion, the corresponding position of the inner wall of the first shaft connecting part 11 is provided with an annular connecting shaft 3 groove matched with the annular connecting shaft protrusion, so that the waterproof performance between the connecting shaft 3 and the first shaft sleeve 1 and the second shaft sleeve 2 is further ensured, and the waterproof performance of the box body of the high-voltage switch is effectively improved.
Preferably: the height in 3 grooves of annular connecting axle is higher than the bellied height of annular connecting axle, just 3 inslots of annular connecting axle are higher than the bellied part of annular connecting axle is filled with silicone grease A, not only improved connecting axle 3 with first axle sleeve 1 and second axle sleeve 2 between waterproof performance, still improved the waterproof performance between the contact surface of first fixed part 12 and second fixed part 22, and then the effectual waterproof performance who improves high-voltage switch's box.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a shaft seal structure for column box formula high tension switchgear which characterized in that: the device comprises a first shaft sleeve, a second shaft sleeve, a fastening bolt and a connecting shaft; the inner diameters of the first shaft sleeve and the second shaft sleeve are the same as the outer diameter of the connecting shaft, and the connecting shaft sequentially penetrates through the second shaft sleeve and the first shaft sleeve to enter a box body of the high-voltage switch to drive the transmission part;
the first shaft sleeve comprises a cylindrical first shaft connecting part and a first fixing part which radially and outwards extends from the end part of the first shaft connecting part, the first shaft connecting part is embedded in the wall of the high-voltage switch box, the first fixing part is contacted with the outer side of the wall of the high-voltage switch box, and symmetrical fixing holes are formed in the first fixing part;
the second shaft sleeve comprises a cylindrical second shaft connecting part and a second fixing part which radially and outwardly extends from the end part of the second shaft connecting part, the second shaft connecting part and the inner cavity of the first shaft connecting part form a connecting shaft channel, and a bolt hole is formed in the position, corresponding to the fixing hole, of the second fixing part;
and the fastening bolt sequentially penetrates through the bolt hole and the fixing hole and is used for fixing the first shaft sleeve and the second shaft sleeve on the wall of the high-voltage switch box.
2. A shaft seal structure for a trunk type high voltage switch according to claim 1, wherein: the connecting shaft is provided with a plurality of annular shaft grooves, and annular shaft bulges matched with the annular shaft grooves are arranged at the corresponding positions of the inner walls of the first shaft connecting part or/and the second shaft connecting part.
3. A shaft seal structure for a trunk type high voltage switch according to claim 2, characterized in that: the plurality of annular shaft grooves have different widths.
4. A shaft seal structure for a trunk type high voltage switch according to claim 1, wherein: the contact surfaces of the first fixing part and the second fixing part are matched through the matched annular fixing groove and the matched annular fixing bulge.
5. The shaft seal structure for a trunk type high-voltage switch according to claim 4, wherein: the contact surface of the first fixing part is provided with an annular fixing groove, and the corresponding position of the contact surface of the second fixing part is provided with an annular fixing bulge.
6. The shaft seal structure for a trunk type high-voltage switch according to claim 5, characterized in that: and a matched O-shaped sealing ring is arranged in the annular fixed groove.
7. A shaft seal structure for a trunk type high voltage switch according to claim 2, characterized in that: the middle part of the connecting shaft is provided with an annular connecting shaft bulge, and an annular connecting shaft groove matched with the annular connecting shaft bulge is formed in the corresponding position of the inner wall of the first shaft connecting part.
8. A shaft seal structure for a trunk type high voltage switch according to claim 7, wherein: the height of the annular connecting shaft groove is higher than the height of the annular connecting shaft, and the annular connecting shaft groove is higher than the part of the annular connecting shaft, which is raised, and is filled with silicone grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123137226.0U CN217182645U (en) | 2021-12-15 | 2021-12-15 | Shaft sealing structure for column box type high-voltage switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123137226.0U CN217182645U (en) | 2021-12-15 | 2021-12-15 | Shaft sealing structure for column box type high-voltage switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217182645U true CN217182645U (en) | 2022-08-12 |
Family
ID=82720709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123137226.0U Active CN217182645U (en) | 2021-12-15 | 2021-12-15 | Shaft sealing structure for column box type high-voltage switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217182645U (en) |
-
2021
- 2021-12-15 CN CN202123137226.0U patent/CN217182645U/en active Active
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