CN212161684U

CN212161684U - Vacuum switch structure of high-voltage capacitor

Info

Publication number: CN212161684U
Application number: CN202021361428.6U
Authority: CN
Inventors: 钱蛇小
Original assignee: Xinghua Huasheng Electronic Co Ltd
Current assignee: Xinghua Huasheng Electronic Co Ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2020-12-15
Anticipated expiration: 2030-07-13

Abstract

The utility model relates to the technical field of capacitors, and discloses a vacuum switch structure of a high-voltage capacitor, which comprises a ceiling, wherein the lower surface of the ceiling is fixedly connected with a porcelain bushing, the upper surface of the porcelain bushing is fixedly connected with an upper outgoing line terminal, the lower surface of the porcelain bushing is fixedly connected with a shell, the left side and the right side of the shell are fixedly connected with handles, the inner parts of the handles are embedded with a rotating shaft, the left side surface of the shell is movably connected with an operating handle, the front surface of the shell is rotatably connected with a breaker energy storage handle, the right side of the breaker energy storage handle is rotatably connected with a separation and combination indication, the inner part of the porcelain bushing is fixedly connected with vacuum insulation silicone grease, the outer wall of the vacuum insulation silicone grease is tightly laminated with a vacuum arc extinguishing chamber, the upper surface of the ceiling is fixedly connected with a sealing ring, and the porcelain bushing and the shell are covered, so that the porcelain bushing and the shell are prevented from being corroded by wind and rain.

Description

Vacuum switch structure of high-voltage capacitor

Technical Field

The utility model relates to a condenser technical field specifically is a vacuum switch structure of high-voltage capacitor.

Background

The vacuum switch device utilizes the characteristics of high vacuum gap withstand voltage and large current conducted by a vacuum arc to complete the on-off function, the vacuum switch device comprises a vacuum interrupter, a vacuum contactor, a vacuum breakdown device, a vacuum load switch and the like, the vacuum switch device is widely applied to a vacuum switch device, a high-voltage transmission device, a power distribution device, an armor control device and a motor starting device, the conventional vacuum switch structure generally breaks current in vacuum through a vacuum arc extinguishing chamber, a protective layer is absent on the outer portion of the conventional vacuum switch structure, air possibly enters the vacuum extinguishing chamber to break the vacuum state, and rain weather corrodes the vacuum switch structure, so that rain easily enters the vacuum switch structure to cause line short circuit.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a high-voltage capacitor's vacuum switch structure, current vacuum switch structure is generally through the disconnected electric current of vacuum arc extinguish chamber in vacuum, and the outside lacks the protective layer, probably leads to the air admission to destroy vacuum state, and weather corrosion vacuum switch structure, leads to the inside problem that leads to the circuit short circuit of rainwater entering vacuum switch structure easily.

The utility model provides a following technical scheme: a vacuum switch structure of a high-voltage capacitor comprises a ceiling, wherein a porcelain bushing is fixedly connected to the lower surface of the ceiling, an upper outgoing line terminal is fixedly connected to the upper surface of the porcelain bushing, a shell is fixedly connected to the lower surface of the porcelain bushing, handles are fixedly connected to the left side and the right side of the shell, a rotating shaft is embedded in each handle, an operating handle is movably connected to the left side of the shell, a breaker energy storage handle is rotatably connected to the front side of the shell, an opening and closing indication is rotatably connected to the right side of the breaker energy storage handle, vacuum insulation silicone grease is fixedly connected to the inner portion of the porcelain bushing, a vacuum arc extinguishing chamber is tightly attached to the outer wall of the vacuum insulation silicone grease, a sealing ring is fixedly connected to the upper surface of the ceiling, a hole is formed in the lower portion of the sealing ring in a penetrating mode, fixing plates are fixedly connected, the lower surface of the shell is fixedly connected with a bottom plate.

Preferably, the number of the holes is three, the holes are arranged on the upper surface of the ceiling in a straight line, and the holes and the porcelain sleeves are located on the same horizontal line.

Preferably, the diameter of the hole is smaller than that of the porcelain sleeve, and the diameter of the inner wall of the sealing ring is equal to that of the hole.

Preferably, the length of the rotating shaft is longer than that of the handle, and the rotating shaft penetrates through the handle and is clamped in the shell.

Preferably, the outer wall of the fixing plate is provided with a hole, the diameter of the hole is larger than that of the screw, and the outer wall of the screw is clamped with the hole.

Preferably, two signboard are arranged above the separation and combination indication, and the left side is a separation and right side is a combination.

Preferably, the ceiling is higher than the shell and the porcelain bushing, and the width of the ceiling is equal to the width of the shell.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. this vacuum switch structure of high-voltage capacitor, through the ceiling of casing top, the height that highly is greater than casing and insulator of ceiling, the width equals the width of casing, covers insulator and casing, prevents the erosion of wind and rain to insulator and casing.

2. According to the vacuum switch structure of the high-voltage capacitor, the arc can be rapidly extinguished and the current can be restrained after the medium-high voltage circuit is powered off through the vacuum arc extinguishing chamber in the porcelain, and the vacuum insulation property in the vacuum arc extinguishing chamber is excellent.

3. This vacuum switch structure of high-voltage capacitor, through the sealing ring of ceiling upper surface, connect the wire joint of going up the terminal that is qualified for the next round of competitions in the hole, the wire outer wall cup joints the sealing ring and prevents that the rainwater from getting into the insulator of below from the gap that wire and hole link to each other.

Drawings

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

FIG. 2 is a schematic view of the internal structure of the porcelain bushing of the present invention;

fig. 3 is a schematic view of a partial structure of the ceiling of the present invention;

in the figure: 1. a ceiling; 2. a porcelain bushing; 3. an upper outlet terminal; 4. a housing; 5. a handle; 6. a rotating shaft; 7. an operating handle; 8. a circuit breaker energy storage handle; 9. opening and closing indication; 10. vacuum insulating silicone grease; 11. a vacuum arc extinguishing chamber; 12. a seal ring; 13. a hole; 14. a fixing plate; 15. screws; 16. a base plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1-3, a vacuum switch structure of a high-voltage capacitor comprises a ceiling 1, a porcelain bushing 2 is fixedly connected to the lower surface of the ceiling 1, an upper outgoing line terminal 3 is fixedly connected to the upper surface of the porcelain bushing 2, a housing 4 is fixedly connected to the lower surface of the porcelain bushing 2, the height of the ceiling 1 is larger than the height of the housing and the porcelain bushing 2, the width of the ceiling 1 is equal to the width of the housing 4, the porcelain bushing 2 is covered, handles 5 are fixedly connected to the left and right sides of the housing 4, a rotating shaft 6 is embedded in the handles 5, the length of the rotating shaft 6 is larger than that of the handles 5, the handles 5 are clamped in the housing 4, an operating handle 7 is movably connected to the left side of the housing 4, a breaker energy storage handle 8 is rotatably connected to the front of the housing 4, a separation and combination indicator 9 is rotatably connected to the right side of the breaker energy, inside fixedly connected with vacuum insulation silicone grease 10 of insulator 2, the outer wall of vacuum insulation silicone grease 10 closely laminates and has the vacuum chamber 11 of extinguishing alone, the last fixed surface of ceiling 1 is connected with sealing ring 12, the below of sealing ring 12 is run through and is provided with hole 13, hole 13 is provided with threely altogether, the upper surface in ceiling 1 is listed as to a word, hole 13 is in same water flat line with insulator 2, the diameter of hole 13 is less than the diameter of insulator 2, the inner wall diameter of sealing ring 12 equals the diameter of hole 13, the left and right sides fixedly connected with fixed plate 14 of casing 4, the last fixed surface of fixed plate 14 is connected with screw 15, the outer wall of fixed plate 14 is provided with the hole, the diameter in hole is greater than the diameter of screw 15, the outer wall and the hole joint of screw 15, the lower fixed surface of casing 4 is connected.

When the electric shock isolation device works, a worker firstly carries out correct assembly and connection on the electric shock isolation device, the height of the ceiling 1 is greater than that of the shell and the porcelain bushing 2 through the ceiling 1, the width is equal to that of the shell 4, the porcelain bushing 2 and the shell 4 are covered to prevent erosion of wind and rain to the porcelain bushing 2 and the shell 4, the vacuum insulation silicone grease 10 on the outer wall of the vacuum arc extinguishing chamber 11 is used for wrapping the vacuum arc extinguishing chamber 11 to prevent air from entering, a wire for connecting the outer wall of the upper outgoing line terminal 3 is clamped in the hole 13 through the hole 13 on the ceiling, the outer wall of the wire is sleeved with the sealing ring 12 to prevent rainwater from entering the porcelain bushing 2 below from a gap connecting the wire and the hole 13, then the switching indication 9 is shifted, when a moving contact and a static contact are switched off under the action of the operating handle 7, electric arcs are generated between the contacts, steam is volatilized from the surface of the contacts at high temperature, the arc moves rapidly along the tangential direction of the surface of the contact under the action of the magnetic field, partial metal steam is condensed on the vacuum arc extinguishing chamber 11, the arc is extinguished when the arc naturally passes through zero, and the medium strength between the contacts is recovered rapidly.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a vacuum switch structure of high-voltage capacitor, includes ceiling (1), its characterized in that: the lower surface of the ceiling (1) is fixedly connected with a porcelain bushing (2), the upper surface of the porcelain bushing (2) is fixedly connected with an upper outgoing line terminal (3), the lower surface of the porcelain bushing (2) is fixedly connected with a shell (4), the left side and the right side of the shell (4) are fixedly connected with handles (5), a rotating shaft (6) is embedded in the handles (5), the left side surface of the shell (4) is movably connected with an operating handle (7), the front side of the shell (4) is rotatably connected with a breaker energy storage handle (8), the right side of the breaker energy storage handle (8) is rotatably connected with a separation and combination indicator (9), the inner part of the porcelain bushing (2) is fixedly connected with vacuum insulation silicone grease (10), the outer wall of the vacuum insulation silicone grease (10) is tightly attached with a vacuum extinguishing chamber (11), the upper surface of the ceiling (1) is fixedly connected with a sealing ring (12), the sealing ring is characterized in that a hole (13) penetrates through the lower portion of the sealing ring (12), fixing plates (14) are fixedly connected to the left side and the right side of the shell (4), screws (15) are fixedly connected to the upper surface of the fixing plates (14), and a bottom plate (16) is fixedly connected to the lower surface of the shell (4).

2. A vacuum switching structure of a high voltage capacitor as claimed in claim 1, wherein: the three holes (13) are arranged on the upper surface of the ceiling (1) in a straight line, and the holes (13) and the porcelain sleeves (2) are positioned on the same horizontal line.

3. A vacuum switching structure of a high voltage capacitor as claimed in claim 1, wherein: the diameter of the hole (13) is smaller than that of the porcelain sleeve (2), and the diameter of the inner wall of the sealing ring (12) is equal to that of the hole (13).

4. A vacuum switching structure of a high voltage capacitor as claimed in claim 1, wherein: the length of pivot (6) is greater than handle (5), runs through handle (5) joint in the inside of casing (4).

5. A vacuum switching structure of a high voltage capacitor as claimed in claim 1, wherein: the outer wall of the fixing plate (14) is provided with a hole, the diameter of the hole is larger than that of the screw (15), and the outer wall of the screw (15) is clamped with the hole.

6. A vacuum switching structure of a high voltage capacitor as claimed in claim 1, wherein: two signboard are arranged above the split and combination indicator (9), and the left side is split and the right side is combined.

7. A vacuum switching structure of a high voltage capacitor as claimed in claim 1, wherein: the ceiling (1) is higher than the shell and the porcelain bushing (2), and the width of the ceiling is equal to that of the shell (4).