CN209804537U

CN209804537U - Solid-sealed polar pole

Info

Publication number: CN209804537U
Application number: CN201920857008.8U
Authority: CN
Inventors: 胡孟雷; 胡旭雷; 关守义
Original assignee: China Mutual Hangzhou Electronic Technology Co Ltd
Current assignee: China Mutual Hangzhou Electronic Technology Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2019-12-17
Anticipated expiration: 2029-06-06

Abstract

The utility model relates to a vacuum circuit breaker's technical field discloses an gu seal utmost point post, its technical scheme main points include the casing and locate the explosion chamber in the casing, the casing includes the base, be connected with the electric current wiring that is used for output current on the base and be used for output voltage's voltage wiring, electric current wiring and voltage wiring all communicate with the casing is outside. The utility model discloses have saving conducting material and simple installation's function.

Description

Solid-sealed polar pole

Technical Field

The utility model relates to a vacuum circuit breaker's technical field, more specifically says that it relates to an gu seal utmost point post.

Background

The solid-sealed pole is formed by simultaneously embedding conductive parts related to the vacuum arc-extinguishing chamber and the circuit breaker into easily-solidified solid insulating materials such as epoxy resin or thermoplastic materials, so that the whole circuit breaker pole is an integral component. The voltage transformer can be used for converting an input voltage value into a specific voltage value such as 220V and the like, and is used for supplying power to a measuring instrument and a relay protection device or protecting valuable equipment in a line. The current transformer can convert primary current with a larger value into secondary current with a smaller value through a certain transformation ratio, and is used for protection, measurement and other purposes, such as converting actual current of 400A into current of 5A.

The existing solid-sealed polar pole generally comprises a shell and an arc extinguish chamber arranged in the shell, wherein a voltage transformer and a current transformer are further connected to the outside of the shell, a voltage wiring for outputting converted voltage is connected to the voltage transformer, and the voltage wiring is connected to the bottom of the shell through a conductive copper bar. The current transformer is connected with a current wiring for outputting the converted current, the current wiring is connected to the bottom of the shell through another conductive copper bar, and finally the bottom of the shell is connected with the aerial plug to lead out voltage and current.

However, the voltage wiring and the current wiring of the solid-sealed polar pole need to be connected with the bottom of the shell through the conductive copper bar respectively, and then the bottom of the shell is externally connected with the aerial plug to lead out voltage and current, so that the conductive copper bar needs to be prepared during installation, the using amount of conductive materials is large, the installation steps are multiple, and the operation is complex.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to the not enough of prior art existence, the utility model provides a gu seal utmost point post has saving conducting material and simple installation's function.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides an gu seal utmost point post, includes the casing and locates the explosion chamber in the casing, the casing includes the base, be connected with the electric current wiring that is used for output current and the voltage wiring that is used for output voltage on the base, electric current wiring and voltage wiring all communicate with the casing outside.

Through adopting above-mentioned technical scheme, the base of casing is directly worn out from to electric current wiring and voltage wiring, and people can directly external navigation plug in order to derive electric current and voltage, and need not to connect the conductive copper bar earlier, has practiced thrift the materials of conductive copper bar and install convenient and fast more.

the utility model discloses further set up to: the lower terminal surface of base is equipped with voltage wire casing, electric current wire casing and two at least mounting holes, the lower terminal surface of voltage wiring and electric current wiring all is higher than the lower terminal surface of base, the lower terminal surface of voltage wiring be less than the upside inner wall of voltage wire casing the lower terminal surface of electric current wiring be less than the upside inner wall of electric current wire casing.

Through adopting above-mentioned technical scheme, the base passes through the mounting hole and links to each other with the base that is used for installing solid closed pole post, and voltage wire casing and electric current wire casing play the effect of drainage, avoid water to flow to the tip of electric current wiring and voltage wiring from the lower terminal surface of base, have reduced the potential safety hazard of taking place the electric leakage accident. In addition, the lower end faces of the voltage wiring and the current wiring are higher than the base, a storage space of the bolt head connected with the base is further provided, and the bolt head is prevented from protruding out of the base to affect the flatness and stability of the base.

The utility model discloses further set up to: the lower end face of the voltage wiring is higher than the lower end face of the current wiring.

Through adopting above-mentioned technical scheme, the height of terminal surface is different under voltage wiring and the electric current wiring, makes things convenient for people to distinguish voltage wiring and electric current wiring.

The utility model discloses further set up to: the upper side inner wall of the voltage wire slot is flush with the upper side inner wall of the current wire slot.

Through adopting above-mentioned technical scheme, under the circumstances of base unevenness, people are difficult to directly distinguish through the height of terminal surface under voltage wiring and the electric current wiring two. People can observe the distance between the current wiring and the base and the distance between the voltage wiring and the base through naked eyes so as to distinguish the voltage wiring and the current wiring, and the device is suitable for different installation environments.

The utility model discloses further set up to: the lower terminal surface of base still is equipped with water drainage tank, water drainage tank is located the outside of voltage wire casing and electric current wire casing.

Through adopting above-mentioned technical scheme, the water drainage tank plays the effect of drainage, avoids water to flow to voltage wire casing and electric current wire casing in from the base outside-in, has further improved the waterproof performance of base.

The utility model discloses further set up to: and a voltage transformer for transforming voltage and a current mutual inductor for transforming current are connected in the shell.

Through adopting above-mentioned technical scheme, inside voltage transformer and the current transformer located the casing, people need not to install voltage transformer and current transformer in addition, convenient operation.

The utility model discloses further set up to: the base is provided with a round angle at the joint of two adjacent side walls.

By adopting the technical scheme, the fillet enables the joint of two adjacent side walls of the base to be the cambered surface, and hands are not easily scratched by edges and corners of the base.

The utility model discloses further set up to: the outer umbrella skirt is arranged on the outer wall of the shell and comprises a large umbrella skirt and a small umbrella skirt which are arranged in a staggered mode.

Through adopting above-mentioned technical scheme, increased the area of contact of casing with the outside air, the radiating effect is good.

To sum up, the utility model discloses following beneficial effect has:

1. The current wiring and the voltage wiring directly penetrate out of the base, so that the use of a conductive copper bar is saved, and the effects of saving conductive materials and being convenient and quick to install are achieved;

2. The lower end faces of the current wiring and the voltage wiring are not parallel and level, so that people can conveniently distinguish the current wiring and the voltage wiring when wiring;

3. Drainage channel, electric current wire casing and voltage wire casing play the effect of drainage, avoid water to flow to the tip of voltage wiring and electric current wiring along the lower terminal surface of base, and water-proof effects is good, the potential safety hazard is little.

Drawings

FIG. 1 is a schematic sectional view of the present embodiment;

FIG. 2 is a schematic sectional view of the housing in the present embodiment;

FIG. 3 is a schematic structural view of the present embodiment;

FIG. 4 is a schematic structural view of the conductive rod in the present embodiment;

FIG. 5 is a schematic structural diagram of the flexible connection in the present embodiment;

Fig. 6 is a schematic structural view of the wire clamp in the present embodiment.

Reference numerals: 1. a housing; 11. a base; 111. round corners; 112. a voltage line slot; 113. a current slot; 114. a water discharge tank; 115. mounting holes; 116. a pressure-dividing hole; 117. a shunt hole; 12. a mounting cavity; 121. a cambered surface; 122. connecting holes; 123. a limiting groove; 13. a rubber encapsulating layer; 14. an outer shed; 141. a large umbrella skirt; 142. a small umbrella skirt; 2. an arc extinguishing chamber; 3. a voltage transformer; 31. a voltage conductor; 32. a voltage connection; 4. a current transformer coil; 41. current wiring; 411. a vertical portion; 412. a horizontal portion; 42. a butting block; 5. a conductive rod; 51. fixing the rod; 511. a first threaded portion; 512. a first smooth portion; 513. a second threaded portion; 514. a second smooth portion; 515. positioning a groove; 52. a screw; 6. soft connection; 61. mounting blocks; 62. a conducting strip group; 63. connecting blocks; 631. a waist-shaped hole; 64. a fastening block; 641. fastening screw holes; 642. a guide groove; 7. wire clamps; 71. a lug plate; 711. a wiring hole; 712. an anti-slip groove; 72. a fixed block; 721. fixing screw holes; 722. a notch; 723. a through hole; 724. a connecting screw hole; 725. and (4) an arc striking angle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

the embodiment discloses a solid-sealed polar pole, as shown in fig. 1 and fig. 2, the solid-sealed polar pole comprises a shell 1 and an arc extinguish chamber 2, the shell 1 comprises a base 11 located at the lower end of the shell, a mounting cavity 12 penetrating through the base 11 is arranged inside the shell 1, the mounting cavity 12 comprises three sections of cavities with unequal inner diameters and gradually reduced from bottom to top, and the joint of two adjacent cavities is an arc surface 121. The arc extinguish chamber 2 is arranged in the cavity at the uppermost side, the upper end of the arc extinguish chamber 2 penetrates out of the shell 1, and the part of the upper end of the arc extinguish chamber 2, which is exposed out of the shell 1, is connected with the isolation knife.

As shown in fig. 1 and 2, a voltage transformer 3 is disposed on the left side of the installation cavity 12, a voltage conductor 31 is connected to the upper end of the voltage transformer 3, the other end of the voltage conductor 31 is connected to the upper portion of the arc extinguish chamber 2, and a voltage connection 32 is connected to the lower end of the voltage transformer 3. The right side of installation cavity 12 is equipped with current mutual inductance coil 4, and the downside of current mutual inductance coil 4 is connected with current wiring 41, and current wiring 41 includes vertical portion 411 and horizontal part 412, and horizontal part 412 and current mutual inductance coil 4 are parallel to each other and through butt joint piece 42 and current mutual inductance coil 4 butt joint, and butt joint piece 42 is the arcuation rather than the complex towards the terminal surface of current mutual inductance coil 4. The voltage transformer 3 and the current mutual inductor 4 are both arranged inside the shell 1, so that the trouble of independently connecting the voltage transformer 3 and the current mutual inductor 4 by people is eliminated, and the installation is convenient.

As shown in fig. 2 and 3, the voltage connection wire 32 and the current connection wire 41 are both communicated with the base 11, so that people do not need to use a conductive copper bar for connecting to transmit voltage or current to the base 11, and the material is saved and the operation is convenient. The fillets 111 are arranged at the joints of the four side walls of the base 11, the fillets 111 are arc-shaped to protect hands, and the hands are prevented from being scratched by edges and corners of the base 11.

As shown in fig. 2 and 3, the lower end surface of the base 11 is provided with a voltage line slot 112, a current line slot 113, a drainage slot 114 and four mounting holes 115, two voltage dividing holes 116 are provided in the voltage line slot 112, and four current dividing holes 117 are provided in the current line slot 113. The inner walls of the upper sides of the voltage wire casing 112 and the current wire casing 113 are flush, the drainage groove 114 is positioned at the outer sides of the voltage wire casing 112 and the current wire casing 113, and the four mounting holes 115 are respectively arranged at the four corners of the base 11 and positioned at the inner side of the drainage groove 114. The lower end of the voltage wiring 32 is located in the voltage wire slot 112, the lower end face of the voltage wiring is lower than the upper inner wall of the voltage wire slot 112, the lower end of the current wiring 41 is located in the current wire slot 113, the lower end face of the current wiring 41 is lower than the upper inner wall of the current wire slot 113, and the lower end face of the voltage wiring 32 is higher than the lower end face of the current wiring 41. The voltage wire slot 112, the current wire slot 113 and the drainage slot 114 play a waterproof role, so that the current leakage accident caused by water flowing to the end part of the voltage wiring 32 or the current wiring 41 is avoided, the waterproof performance is good, and the potential safety hazard is small. The fact that the lower end faces of the voltage wiring 32 and the current wiring 41 are not flush has the effect of facilitating a person to distinguish between them when they are installed.

as shown in fig. 1 and 2, a connecting hole 122 penetrating through the current transformer coil 4 is formed in the inner wall of the mounting cavity 12, the connecting hole 122 is located in the inner wall of the uppermost chamber of the mounting cavity 12, a conductive rod 5 penetrates through the connecting hole 122, one end of the conductive rod 5 is in threaded connection with a flexible connection 6 located in the mounting cavity 12, and the other end of the conductive rod 5 is in threaded connection with a wire clamp 7. The current output from the arc extinguish chamber 2 is transmitted to the conducting rod 5 through the flexible connection 6, and is converted under the action of the current mutual inductor 4 and then is output through the wire clamp 7 for use.

As shown in fig. 1 and 5, the flexible connection 6 includes an installation block 61, a conductive sheet set 62 and a connection block 63, the connection block 63 may be connected to the arc extinguish chamber 2 by a bolt, the conductive sheet set 62 includes a plurality of copper sheets stacked on each other, one end of the conductive sheet set 62 is fixedly connected to the installation block 61, the other end of the conductive sheet set is fixedly connected to the connection block 63, and a waist-shaped hole 631 is formed in the connection block 63. The copper sheet has good conductivity, large yield and low price, and reduces the production cost of the flexible connection 6. The end face, far away from the connecting block 63, of the mounting block 61 is fixed with a fastening block 64 with a square cross section, the inner wall of the mounting cavity 12 is further provided with a limiting groove 123 communicated with the connecting hole 122, the cross section area of the limiting groove 123 is larger than that of the connecting hole 122, the fastening block 64 is located in the limiting groove 123, and the end face, close to the connecting hole 122, of the fastening block 64 is provided with a fastening screw hole 641 penetrating through the mounting block 61. The fastening block 64 increases the connection length between the conductive rod 5 and the mounting block 61, and improves the fastening property of the connection between the conductive rod 5 and the mounting block, and the side wall of the limiting groove 123 can limit the fastening block 64 to rotate along with the conductive rod 5 screwed into the fastening screw hole 641.

As shown in fig. 5, the fastening screw hole 641 is provided with a guide groove 642 on both the side close to and the side away from the end surface of the conductive sheet group 62, and the inner diameter of the guide groove 642 is gradually reduced toward the side close to the fastening screw hole 641. The guide groove 642 enlarges the opening of the fastening screw hole 641, and plays a role of guiding when the conductive rod 5 extends, so that the conductive rod 5 can conveniently extend into the fastening screw hole 641.

as shown in fig. 1 and 4, the conductive rod 5 includes a fixing rod 51 and a screw rod 52 which are integrally formed, the screw rod 52 is in threaded fit with the fastening screw hole 641, the fixing rod 51 includes a first threaded portion 511, a first smooth portion 512, a second threaded portion 513 and a second smooth portion 514 which are sequentially arranged, wherein the first threaded portion 511 is located at one end far away from the screw rod 52, and two positioning grooves 515 are circumferentially distributed on a side wall of the first smooth portion 512.

As shown in fig. 1 and 6, the wire clamp 7 includes a wire connecting piece 71 and a fixing block 72, which are fixedly connected, wherein two wire connecting holes 711 distributed in a vertical direction are formed in an end surface of the wire connecting piece 71 close to the fixing block 72, and a plurality of anti-slip grooves 712 are formed in end surfaces of the wire connecting piece 71 close to the fixing block 72 and end surfaces of the wire connecting piece 71 far from the fixing block 72. The anti-slip groove 712 increases the friction between the human hand and the tab 71, so that the tab 71 is not easily moved relative to the human hand. The fixing block 72 is provided with a fixing screw hole 721 in threaded fit with the first threaded portion 511, the inner wall of the fixing screw hole 721 is provided with a notch 722, the notch 722 is close to one end of the fixing screw hole 721 away from the lug 71, and two side walls opposite to the notch 722 are respectively provided with a through hole 723 and a connecting screw hole 724. One can further improve the stability of the conductive rod 5 by inserting the bolt through the through hole 723 and then threadedly engaging with the connecting screw hole 724 to clamp the conductive rod 5 by the portions of the fixing block 72 located at both sides of the gap 722.

As shown in fig. 6, arc-shaped arc-striking angles 725 are arranged at the edges and corners of the fixing block 72 at the two sides of the notch 722, and the arc-striking angles 725 play a role in striking an arc, so that accidents caused by high-temperature arcs generated at the edges and corners of the fixing block 72 are avoided, and the potential safety hazard is small.

As shown in fig. 1 and 2, the casing 1 is made of epoxy resin material and is coated with the rubber encapsulating layer 13, and the rubber encapsulating layer 13 plays a role in protecting the casing 1, so that the casing 1 is prevented from being damaged in the transportation or installation process. Outer shed 14 is formed on the outer wall of casing 1, and outer shed 14 is including crisscross big shed 141 and the little shed 142 that sets up, and outer shed 14 has increased the area of contact of casing 1 with the air, and the radiating effect is good.

The working principle of the embodiment is as follows: the voltage output from the arc extinguish chamber 2 is transmitted to the voltage transformer 3 through the voltage wire 31, then the voltage transformer 3 performs voltage division conversion, and the converted voltage is transmitted to the base 11 through the voltage wiring 32. The current output from the arc-extinguishing chamber 2 is transmitted to the conductive rod 5 through the flexible connection 6, converted by the current transformer 4, and transmitted to the base 11 through the current connection 41. The voltage transformer 3 and the current transformer coil 4 are both arranged inside the shell 1, and people do not need to connect the voltage transformer 3 and the current transformer outside the shell 1 independently, so that the installation is convenient. And because the voltage transformer 3 is directly connected with the arc extinguish chamber 2 through the voltage wire 31, the span of the flexible connection 6 is reduced, thereby saving the production materials of the flexible connection 6. In addition, voltage wiring 32 and current wiring 41 directly link to each other with base 11, and people need not external conductive copper bar in order to introduce electric current or voltage into base 11, and it is more convenient to install when practicing thrift conducting material.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides an gu seal utmost point post, includes casing (1) and locates explosion chamber (2) in casing (1), its characterized in that: casing (1) includes base (11), be connected with current wiring (41) that are used for output current and voltage wiring (32) that are used for output voltage on base (11), current wiring (41) and voltage wiring (32) all communicate with casing (1) outside.

2. The embedded pole of claim 1, wherein: the lower terminal surface of base (11) is equipped with voltage wire casing (112), electric current wire casing (113) and two at least mounting holes (115), the lower terminal surface of voltage wiring (32) and electric current wiring (41) all is higher than the lower terminal surface of base (11), the lower terminal surface of voltage wiring (32) is less than the upside inner wall of voltage wire casing (112) the lower terminal surface of electric current wiring (41) is less than the upside inner wall of electric current wire casing (113).

3. the embedded pole of claim 2, wherein: the lower end surface of the voltage wiring (32) is higher than the lower end surface of the current wiring (41).

4. The embedded pole of claim 2, wherein: the upper inner wall of the voltage wire slot (112) is flush with the upper inner wall of the current wire slot (113).

5. The embedded pole of claim 2, wherein: the lower terminal surface of base (11) still is equipped with water drainage tank (114), water drainage tank (114) are located the outside of voltage wire casing (112) and electric current wire casing (113).

6. the embedded pole of claim 1, wherein: a voltage transformer (3) for converting voltage and a current mutual inductor (4) for converting current are connected in the shell (1).

7. The embedded pole of claim 1, wherein: and the joint of two adjacent side walls on the base (11) is provided with a fillet (111).

8. The embedded pole of claim 1, wherein: the outer umbrella skirt (14) is arranged on the outer wall of the shell (1), and the outer umbrella skirt (14) comprises a large umbrella skirt (141) and a small umbrella skirt (142) which are arranged in a staggered mode.