CN209822547U - Voltage-sharing cover and vacuum circuit breaker and ring main unit comprising same - Google Patents
Voltage-sharing cover and vacuum circuit breaker and ring main unit comprising same Download PDFInfo
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- CN209822547U CN209822547U CN201920618586.6U CN201920618586U CN209822547U CN 209822547 U CN209822547 U CN 209822547U CN 201920618586 U CN201920618586 U CN 201920618586U CN 209822547 U CN209822547 U CN 209822547U
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- voltage
- circuit breaker
- cover
- vacuum circuit
- flat bottom
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Abstract
The utility model discloses a voltage-sharing cover reaches vacuum circuit breaker and looped netowrk cabinet including it. The voltage-equalizing cover is used for a vacuum circuit breaker, and comprises: a flat bottom, a sidewall, surrounding the flat bottom, disposed at an angle to the bottom; and the transition part is used for smoothly connecting the fillet between the flat bottom and the side wall, the voltage-sharing cover is integrally formed, and when the bottom is fixed in place, the transmission mechanism of the vacuum circuit breaker is coated in the space surrounded by the side wall, the transition part and the bottom so as to improve the electric field of parts of the transmission mechanism. The utility model discloses a surround vacuum circuit breaker drive mechanism's voltage-sharing cover, improve the electric field of drive mechanism spare part, through the shape that sets up the voltage-sharing cover, with the restriction of insulating weak point in a specific position, can insert the riveting round pin in the installed part through the setting, can improve the performance of the resistance load of voltage-sharing cover. The utility model discloses a voltage-sharing cover can also improve the performance of using its vacuum circuit breaker and looped netowrk cabinet.
Description
Technical Field
The present invention relates to a voltage-equalizing cover, and more particularly, to a voltage-equalizing cover used in a vacuum circuit breaker. The utility model discloses still relate to vacuum circuit breaker and looped netowrk cabinet including this voltage-sharing cover.
Background
In the vacuum circuit breaker, the transmission mechanism at the movable end of the arc extinguish chamber is generally provided with high voltage, so the transmission mechanism also needs to meet the insulation performance of products at intervals and opposite places, the distribution of the electric field of the transmission mechanism is generally extremely uneven, and the insulation performance between phases and opposite places is necessarily poor under the non-SF 6 insulation environment.
Therefore, improving the electric field distribution of the transmission mechanism parts is very critical to improve the insulation performance of the vacuum circuit breaker.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem by providing an electric field distribution that the voltage-sharing cover improves the transmission spare part of vacuum circuit breaker.
According to an aspect of the utility model, a voltage-sharing cover is provided for vacuum circuit breaker, a serial communication port, include:
the bottom part of the container is flat and flat,
a sidewall surrounding the flat bottom and disposed at an angle to the bottom; and
a transition portion with rounded corners smoothly connected between the flat bottom and the side walls,
the voltage-sharing cover is integrally formed, and when the voltage-sharing cover is fixed in place through the bottom, the transmission mechanism of the vacuum circuit breaker is wrapped in the space surrounded by the side wall, the transition part and the bottom, so that the electric field of parts of the transmission mechanism is improved.
Preferably, the side wall profile is shaped to include a straight edge, and a curved edge on an opposite side of the straight edge, the curved edge being spaced from the straight edge by only a maximum distance.
Preferably, the operating position defines a minimum distance between two adjacent pressure-equalizing shields between the straight edge of one pressure-equalizing shield and the maximum point of the other pressure-equalizing shield.
Preferably, the angle is less than a right angle.
Preferably, the bottom of the voltage-sharing cover is provided with a riveting pin extending in the opposite direction to the side wall, and the riveting pin is inserted into the mounting piece when the voltage-sharing cover is mounted on the mounting piece relative to the transmission mechanism of the vacuum circuit breaker, and then is fastened on the mounting piece through a screw penetrating through the riveting pin, so that the resistance performance of the voltage-sharing cover to various mechanical vibrations is improved.
Preferably, a single-piece gasket is arranged between the flat bottom and the surface of the mounting piece, and a hole for a hollow cylindrical riveting pin to pass through is formed in the gasket, and the thickness of the gasket is about 2 mm.
Preferably, the pressure equalizing cover is provided with a groove which is punched and formed along the same extending direction with the side wall and is provided with a vertical wall and a fillet transition curved surface, so as to be used as a guide groove of the transmission mechanism.
Preferably, the radius of the fillet or fillet transition curve surface is not less than R10, and the pressure equalizing cover is formed by metal.
According to the utility model discloses another aspect provides a vacuum circuit breaker, including preceding the voltage-sharing cover, voltage-sharing cover cladding vacuum circuit breaker's drive mechanism.
According to another aspect of the present invention, there is provided a ring main unit, comprising the vacuum circuit breaker described above.
The utility model discloses a surround vacuum circuit breaker drive mechanism's voltage-sharing cover, the relatively poor situation of electric field that has avoided a plurality of parts among the drive mechanism to cause, through the shape that sets up the voltage-sharing cover, provides the simple and convenient means that detects the inside electric field performance of vacuum circuit breaker, can wear to establish the riveting round pin in the installed part through the setting, can improve the performance of resisting load of voltage-sharing cover. The utility model discloses can improve the electric field of drive mechanism part effectively, can also regard as drive mechanism's the carrier simultaneously, have simple structure, mechanical strength is high, the comparatively even characteristics of electric field distribution. And then the utility model discloses a voltage-sharing cover can also improve the performance of using its vacuum circuit breaker and looped netowrk cabinet.
Drawings
FIG. 1 is a perspective view of a pressure equalization housing showing an interior space according to the present invention;
FIG. 2 is a perspective view of a voltage-sharing enclosure showing an exterior surface according to the present invention;
FIG. 3 is a cross-sectional view of a pressure equalization cage according to the present invention mounted on a mounting member;
figure 4 is a perspective view of a pressure equalization cover according to the present invention mounted on a mounting member.
Detailed Description
Embodiments according to the present invention will be described with reference to the accompanying drawings, wherein directional terminology used in the description is for the purpose of description only and is not intended to be limiting.
Fig. 1 is a perspective view showing an inner space of a voltage-equalizing cover according to the present invention, and fig. 2 is a perspective view showing an outer surface of a voltage-equalizing cover according to the present invention, in which the voltage-equalizing cover is denoted as a whole by reference numeral 1. The pressure equalizing shield 1 is typically stamped and formed in one piece from sheet metal and comprises a flat bottom 11, a side wall 12 extending perpendicularly to the flat bottom 11, and a transition 13 connecting the flat bottom 11 and the side wall 12, said transition 13 being smoothly rounded, the flat bottom 11, the side wall 12 and the transition 13 together enclosing a space and defining a smooth outer surface. The flat bottom 11 is shaped to comprise a straight edge and a curved edge on the opposite side of the straight edge, the distance of the curved edge from the straight edge having only one maximum.
Fig. 3 is a cross-sectional view of a pressure equalizing shield according to the present invention installed on the installation member, and fig. 4 is a perspective view of a pressure equalizing shield according to the present invention installed on the installation member. As can be seen from fig. 3 and 4, the voltage-sharing cover 1 is installed on the installation member 3 through the flat bottom 11, and is installed in place, the straight edge of the voltage-sharing cover 1 is in a vertical position, the transmission mechanism 4 of the vacuum circuit breaker is wrapped in a space surrounded by the flat bottom 11, the side wall 12 and the transition part 13 of the voltage-sharing cover 1, and the width of the voltage-sharing cover 1 in the direction perpendicular to the straight edge thereof is greater than the width of the transmission mechanism 4 in the corresponding direction, so that the electric field of each component of the transmission mechanism 4 is covered by the uniform electric field of the voltage-sharing cover 1.
Because the utility model discloses a straight flange is located vertical position when taking one's place for voltage-sharing cover 1, the distance that is used for between the adjacent double-phase voltage-sharing cover from this is injectd by the straight flange of the voltage-sharing cover of a looks and the distance between the curved edge of the voltage-sharing cover of another looks, because the curved edge of voltage-sharing cover sets up to only having a maximum distance in the distance apart from the straight flange, consequently, there is a minimum distance in the distance between two voltage-sharing covers, this minimum distance is the circuit breaker looks and the only weak point of insulating between the looks, through the electric field distribution who improves this weak point, can effectively improve the insulating properties between the circuit breaker looks.
Since the mounting member is usually made of an insulating material and the surge tank is usually made of a metal material, in order to avoid that the large flat bottom 11 of the surge tank 1 comes into contact with the surface of the mounting member to form a three-phase joint, as can be seen in fig. 2 and 3, a spacer 2 is provided between the flat bottom 11 of the surge tank 1 and the surface of the mounting member 3, the thickness of the spacer 2 being about 2mm, and a fastener (e.g., a screw) is passed through the spacer 2 and the flat bottom 11 to fix the surge tank 1 to the mounting member 3.
Preferably, the fillet radius of the transition part 13 is not less than R10, so that the voltage-equalizing cover can obtain better electric field. Although the side wall 12 is disposed perpendicular to the flat bottom 11 in the embodiment shown in the drawings, the angle of the side wall 12 and the flat bottom 11 may be smaller than a right angle.
Referring to fig. 1 and 2, it can also be seen that the pressure equalizing cover 1 is provided with a groove 15 having a vertical wall and a rounded transitional curved surface formed in the same extending direction as the side wall 12, and the groove 15 is provided as a guide groove of the transmission mechanism, so that the shape of the groove 15 can be any shape that conforms to the moving path of the moving member on the flat bottom 11.
Since the surge tank 1 is disposed around the transmission mechanism of the vacuum circuit breaker, which exerts a load on the surge tank in operation, the fastener that fixes the surge tank 1 to the mounting member 3 is easily damaged and is not favorable for positioning. In order to improve the load resistance of the pressure equalizing cover 1, a hollow cylindrical riveting pin 14 extending in the opposite direction to the side wall can be further arranged on the bottom 11 of the pressure equalizing cover 1, and is used for being inserted into a hole formed in the mounting piece 3 when the pressure equalizing cover 1 is mounted on the mounting piece 3 relative to a transmission mechanism of the vacuum circuit breaker, and then being fastened on the mounting piece 3 through a screw penetrating through the hollow part of the riveting pin 14, so that the resistance of the pressure equalizing cover 1 to various mechanical vibrations is improved.
When the pressure equalizing cover 1 is provided with the caulking pin 14, the gasket 2 is provided with a hole through which the caulking pin 2 passes. The riveting pin 2 may be provided in two or more, and the spacer 2 may be a single spacer.
In the case where the transmission mechanism 4 is symmetrically arranged as shown in fig. 4, a pair of the above-mentioned pressure equalizing covers 1 may be employed, which are mirror-symmetrical, and are respectively arranged on both sides of the symmetrically arranged transmission mechanism 4.
The voltage-sharing cover 1 can improve the performance of a vacuum circuit breaker and a ring main unit using the voltage-sharing cover.
The various features described above with respect to the pressure equalization cover 1 may form new embodiments by omitting a certain feature or features, and may also form new embodiments by including various combinations of features, all of which are within the scope of the present invention.
While the best modes for carrying out the invention have been described in detail, those familiar with the art to which this invention relates will recognize various alternative designs and embodiments for practicing the invention within the scope of the appended claims.
Claims (10)
1. A surge tank for a vacuum circuit breaker, comprising:
the bottom part of the container is flat and flat,
a sidewall surrounding the flat bottom and disposed at an angle to the flat bottom; and
a transition portion with rounded corners smoothly connected between the flat bottom and the side walls,
the voltage-equalizing cover is integrally formed, and when the voltage-equalizing cover is fixed in place through the flat bottom, the transmission mechanism of the vacuum circuit breaker is coated in a space surrounded by the side wall, the transition part and the flat bottom, so that the electric field of parts of the transmission mechanism is improved.
2. The pressure equalization cap of claim 1 wherein the sidewall profile is shaped to include a straight edge and a curved edge on an opposite side of the straight edge, the curved edge being spaced from the straight edge only a maximum distance.
3. The pressure equalizing cover of claim 2, wherein a point located as a maximum of one pressure equalizing cover from a straight edge of an adjacent pressure equalizing cover in the operating position defines a minimum distance between two adjacent pressure equalizing covers.
4. The pressure equalization hood of claim 3 wherein the angle is less than a right angle.
5. The surge tank, as claimed in any of claims 1-4, wherein the flat bottom of the surge tank is provided with rivet pins extending in the opposite direction to the side walls for insertion into the mounting member when the surge tank is mounted on the mounting member with respect to the transmission mechanism of the vacuum circuit breaker, and then fastened to the mounting member by screws passing through the rivet pins to improve the resistance of the surge tank to various mechanical vibrations.
6. The pressure equalizing cover according to claim 5, wherein a single-piece spacer is disposed between the flat bottom and the surface of the mounting member, and the spacer is provided with a hole for passing a hollow cylindrical rivet pin therethrough, and has a thickness of about 2 mm.
7. The pressure equalizing cover according to any one of claims 1 to 4, wherein the pressure equalizing cover is provided with a groove which is punched and formed along the same extending direction as the side wall and has a vertical wall and a rounded transitional curved surface and is used as a guide groove of the transmission mechanism.
8. The pressure equalization cover of claim 7, wherein the radius of the fillet or fillet transition surface is not less than R10, and the pressure equalization cover is formed of metal.
9. Vacuum circuit breaker comprising a voltage-equalizing shield according to any of claims 1 to 8, which voltage-equalizing shield encloses the transmission mechanism of the vacuum circuit breaker.
10. A ring main unit comprising a vacuum interrupter according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920618586.6U CN209822547U (en) | 2019-04-30 | 2019-04-30 | Voltage-sharing cover and vacuum circuit breaker and ring main unit comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920618586.6U CN209822547U (en) | 2019-04-30 | 2019-04-30 | Voltage-sharing cover and vacuum circuit breaker and ring main unit comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209822547U true CN209822547U (en) | 2019-12-20 |
Family
ID=68882602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920618586.6U Active CN209822547U (en) | 2019-04-30 | 2019-04-30 | Voltage-sharing cover and vacuum circuit breaker and ring main unit comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209822547U (en) |
-
2019
- 2019-04-30 CN CN201920618586.6U patent/CN209822547U/en active Active
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