CN209929212U

CN209929212U - Insulating pole

Info

Publication number: CN209929212U
Application number: CN201920619544.4U
Authority: CN
Inventors: 甘海涛; 张强; 李义刚
Original assignee: SHANGHAI GOODRUN ELECTRIC POWER TECHNOLOGY Co Ltd
Current assignee: SHANGHAI GOODRUN ELECTRIC POWER TECHNOLOGY Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-01-10
Anticipated expiration: 2029-04-30

Abstract

The utility model provides an insulating utmost point post, pour including an organic whole: the device comprises a vacuum arc extinguish chamber, a flexible connection structure, a conducting rod and a current sensor; the moving contact of the vacuum arc extinguish chamber is electrically connected with the conducting rod through the flexible connection structure, and the current sensor is arranged around the conducting rod. The utility model discloses with vacuum interrupter, flexible connection structure, conducting rod, voltage sensor, get electric capacity and current sensor an organic whole and pour, solved vacuum interrupter, flexible connection structure and current transformer and insulating resin's clearance problem of discharging. The voltage sensor, the current sensor and the capacitor power taking are integrated with the insulated pole, the appearance is attractive, and the installation engineering of one voltage transformer is saved.

Description

Insulating pole

Technical Field

The utility model relates to an electrical device field specifically, relates to an insulating utmost point post.

Background

For example, in the indoor high-voltage Vacuum Circuit breaker disclosed in patent CN201522960U, a totally enclosed solid insulating pole with a heat dissipation cover is formed by simultaneously embedding conductive parts related to a Vacuum interrupter (Vacuum interrupter) and a Circuit breaker (Circuit-breaker) into solid insulating materials which are easily cured, such as epoxy resin or thermoplastic material, to form a pole, so that the whole pole of the Circuit breaker becomes an integral component.

As shown in fig. 1 and 2, the conventional insulated pole has the following defects:

1. conventional insulating utmost point post is by epoxy cavity 1, outsourcing silicon rubber 2, vacuum interrupter 3, flexible coupling 4, current transformer 5 constitutes, vacuum interrupter and flexible coupling all are secondary assembly, and the silicone rubber outsourcing is handled earlier to vacuum interrupter, then slowly squeezes into inside the insulating resin cavity through the frock, owing to be secondary assembly, can't guarantee vacuum interrupter and epoxy cavity inside and reliably combine together, and easy gassing can produce the partial discharge phenomenon after exerting the high pressure.

2. The assembly of conventional insulating utmost point post flexible coupling inserts in the epoxy cavity with flexible coupling 4 earlier, then fixes the flexible coupling on the epoxy cavity through the bolt, and after the action of deciliter many times, the flexible coupling will produce the crease, and after through high pressure, the flexible coupling point department can produce the partial discharge phenomenon, influences the life of insulating utmost point post.

3. The current transformer is fixed around the conducting rod outside the flexible connection, and then a secondary wire is connected into the interior of the switch through the threading pipe 6 to supply power. A gap exists between the current transformer and the conducting rod, and partial discharge can be generated by high voltage. The conventional current transformer has low precision, can only be used for line protection, and has larger volume and extremely inconvenient assembly.

4. The conventional insulating pole can not collect voltage signals, and a voltage transformer is additionally arranged on the switch power supply to supply power to the switch and the controller. The cost is higher, and the installation is loaded down with trivial details. The secondary wiring of the voltage transformer is assembled on site, so that the secondary wiring error of the product is easy to occur, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing an insulating utmost point post.

According to the utility model provides a pair of insulating utmost point post, pour including an organic whole: the device comprises a vacuum arc extinguish chamber, a flexible connection structure, a conducting rod and a current sensor;

the moving contact of the vacuum arc extinguish chamber is electrically connected with the conducting rod through the flexible connection structure, and the current sensor is arranged around the conducting rod.

Preferably, the vacuum circuit breaker further comprises a voltage sensor integrally poured with the vacuum arc extinguish chamber, the flexible connection structure, the conducting rod and the current sensor, and the voltage sensor is electrically connected with a fixed contact of the vacuum arc extinguish chamber.

Preferably, the vacuum circuit breaker further comprises two power-taking capacitors integrally poured with the vacuum arc-extinguishing chamber, the flexible connection structure, the conducting rod and the current sensor, wherein one power-taking capacitor is electrically connected with a moving contact of the vacuum arc-extinguishing chamber, and the other power-taking capacitor is electrically connected with a static contact of the vacuum arc-extinguishing chamber.

Preferably, the flexible connection structure includes: the flexible conductive bar comprises a first transition connecting piece, a flexible conductive bar and a second transition connecting piece;

two ends of the flexible conducting bar are respectively connected with the first transition connecting piece and the second transition connecting piece, the first transition connecting piece is connected with a moving contact of the vacuum arc-extinguishing chamber, and the second transition connecting piece is connected with the conducting rod.

Preferably, the flexible connection structure further comprises: a shield, the first transition connector, the flexible conductive bar and the second transition connector disposed within the shield.

Preferably, a connecting hole is formed in the first transition connecting piece, the shape of the connecting hole is matched with that of a moving contact of the vacuum arc-extinguishing chamber, and the moving contact is inserted into the connecting hole.

Preferably, two ends of the shielding case are open, and the first transition connector and the second transition connector are respectively located at the two openings.

Preferably, a sealing gasket is arranged at the edge position of the opening where the first transition connecting piece is located, and is connected with the outer wall of the vacuum arc-extinguishing chamber in a sealing manner.

Preferably, one end of the conducting rod is connected with the second transition connector and seals the opening where the second transition connector is located.

Preferably, the shape of the connecting hole and the movable contact comprises a cone.

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

1. the vacuum arc extinguish chamber, the soft connection structure, the conducting rod and the current sensor are integrally poured, so that the problem of gap discharge between the vacuum arc extinguish chamber, the soft connection structure and the current transformer and the insulating resin is solved;

2. the soft connection structure is sealed by the shielding cover, so that the sealing problem of resin pouring is solved, the local discharge phenomenon of soft connection is shielded, and the influence of the local discharge of the soft connection of the conventional insulated pole on the service life of the insulated resin is solved;

3. the current sensor, the voltage sensor and the electricity taking capacitor are integrated, and the traditional current transformer is replaced by the current sensor, so that the size is reduced, and the precision is improved; the voltage sensor can accurately measure the voltage on the line, and the problem that the conventional insulating pole can not collect voltage signals is solved; the electricity-taking capacitor can directly take electricity to supply power for the switch and the controller, and a voltage transformer is not required to be added to supply power for the switch and the controller. The novel deep fusion insulating pole integrates the current transformer, the voltage transformer and the three-phase five-pole voltage transformer together. The volume is reduced, the field installation is convenient, and the overall cost of the switch is greatly reduced.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a sectional view of a conventional insulated pole;

fig. 2 is a side view of a conventional insulated pole;

fig. 3 is a cross-sectional view of an angle of the present invention;

fig. 4 is a cross-sectional view of another angle of the present invention;

FIG. 5 is a partial enlarged view of the present invention;

fig. 6 is a schematic view of the flexible connection structure of the present invention.

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

As shown in fig. 3 and 4, the utility model provides an insulating pole, pour including an organic whole: the device comprises a vacuum arc extinguish chamber 12, a soft connecting structure 13, a conducting rod 27, a current sensor 14, a voltage sensor 15 and two power taking capacitors 16; the movable contact of the vacuum arc-extinguishing chamber 12 is electrically connected with the conducting rod 27 through the flexible connecting structure 13, and the current sensor 14 is arranged around the conducting rod 27. The voltage sensor 15 is electrically connected with a fixed contact of the vacuum arc-extinguishing chamber 12. One of the power-taking capacitors is electrically connected with the moving contact of the vacuum arc-extinguishing chamber 12, and the other power-taking capacitor is electrically connected with the fixed contact of the vacuum arc-extinguishing chamber 12.

Specifically, the integral casting is to integrally cast the vacuum arc-extinguishing chamber, the flexible connection structure, the metal shielding case and the current sensor to form the insulating resin cavity 11 by an APG process (epoxy resin automatic pressure gel molding process), and combine the internal components together.

As shown in fig. 5 and 6, the flexible connecting structure 13 includes: a first transition connector 21, a flexible conductive bar 22, a second transition connector 23 and a shield 24.

The two ends of the flexible conductive bar 22 are respectively connected with the first transition connecting piece 21 and the second transition connecting piece 23, the movable contact 28 of the first transition connecting piece 21 and the vacuum arc-extinguishing chamber 25 can be connected in an adaptive mode, and the first transition connecting piece 21, the flexible conductive bar 22 and the second transition connecting piece 23 are arranged in the shielding cover 24, so that the influence of local discharge of flexible connection is avoided. The shielding cover 24 is open at both ends, and the first transition connector 21 and the second transition connector 23 are respectively located at the two openings to facilitate external connection. The edge position of the opening where the first transition connecting piece 21 is located is provided with a sealing gasket 26 which is connected with the outer wall of the vacuum arc-extinguishing chamber in a sealing way. One end of the conductive rod 27 is connected to the second transition piece 23 and seals the opening where the second transition piece 23 is located.

In this embodiment, the flexible conducting bar 22 includes a plurality of flexible conducting metal members wound or stacked together, and two ends of the flexible conducting bar 22 are respectively connected to the first transition connecting member 21 and the second transition connecting member 23 by cold pressing, so that the problem of metal material damage caused by high welding temperature is solved, and the service life is greatly prolonged.

The connection of the first transition connection 21 to the movable contact 28 is realized in the present embodiment by: the first transition connecting piece 21 is provided with a connecting hole, the shape of the connecting hole is mutually matched with the shape of a movable contact 28 of the vacuum arc-extinguishing chamber 25, and the movable contact 28 is inserted in the connecting hole. The shape of the connection hole and the movable contact 28 includes a taper, which increases the conductive contact area. The rated working current is improved.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. The utility model provides an insulating utmost point post, its characterized in that, including integrative pouring: the device comprises a vacuum arc extinguish chamber, a flexible connection structure, a conducting rod, a voltage sensor, a power taking capacitor and a current sensor;

2. The insulated pole post of claim 1, further comprising a voltage sensor integrally cast with the vacuum interrupter, the flexible connection structure, the conductive rod and the current sensor, wherein the voltage sensor is electrically connected with a stationary contact of the vacuum interrupter.

3. The insulated pole post of claim 1, further comprising two power-taking capacitors integrally cast with the vacuum arc-extinguishing chamber, the flexible connection structure, the conductive rod and the current sensor, wherein one power-taking capacitor is electrically connected with a moving contact of the vacuum arc-extinguishing chamber, and the other power-taking capacitor is electrically connected with a static contact of the vacuum arc-extinguishing chamber.

4. The insulated pole post of claim 1, wherein the flexible connection structure comprises: the flexible conductive bar comprises a first transition connecting piece, a flexible conductive bar and a second transition connecting piece;

5. The insulated pole post of claim 4, wherein the flexible connection structure further comprises: a shield, the first transition connector, the flexible conductive bar and the second transition connector disposed within the shield.

6. The insulated pole post as claimed in claim 4, wherein the first transition connecting member is provided with a connecting hole, the shape of the connecting hole is matched with the shape of a moving contact of the vacuum arc-extinguishing chamber, and the moving contact is inserted into the connecting hole.

7. The insulated pole post of claim 5, wherein the two ends of the shielding can are open, and the first transition connector and the second transition connector are respectively positioned at the two openings.

8. The insulated pole post as claimed in claim 5, wherein a sealing gasket is arranged at the edge of the opening where the first transition connecting piece is located, and is connected with the outer wall of the vacuum arc-extinguishing chamber in a sealing manner.

9. The insulated pole post of claim 4, wherein one end of the conducting rod is connected with the second transition piece and seals the opening where the second transition piece is located.

10. The insulated pole post of claim 6, wherein the shape of the connecting hole and the movable contact comprises a taper.