阅读说明：本技术 一种柱上断路器 (Pole-mounted circuit breaker ) 是由 张�杰 周翔 沈主浮 詹麒麟 张周伟 邹道林 张弛 曾恕程 王亚楠 诸国彪 岳勇 于 2020-12-07 设计创作，主要内容包括：本发明公开了一种柱上断路器,包括断路器和断路器基座,所述基座与电杆连接固定,所述断路器通过固件连接在所述基座上；所述断路器包括箱体、灭弧室、三相触头和操作手柄、上连接触头和下连接触头,所述灭弧室设置在所述箱体内,所述操作手柄设置在所述箱体侧面,并通过弹簧机构与所述三相触头连接,所述三相触头位于所述灭弧室内,所述弹簧机构封闭在所述灭弧室的气室内,所述灭弧室为透明罩壳,在所述箱体的底部和侧面开设有用于观察所述三相触头运动范围的观察窗；10kv导线连接所述上接触头,上接触头通过灭弧室内的引线连接下接触头,下接触头连接下引线。本发明可快速隔离跨越电缆,缩短故障处理停电时间；电缆故障修复后,可快速回复供电。(The invention discloses a pole-mounted circuit breaker, which comprises a circuit breaker and a circuit breaker base, wherein the base is fixedly connected with an electric pole, and the circuit breaker is connected to the base through a firmware; the circuit breaker comprises a box body, an arc extinguish chamber, a three-phase contact, an operating handle, an upper connecting contact and a lower connecting contact, wherein the arc extinguish chamber is arranged in the box body, the operating handle is arranged on the side surface of the box body and is connected with the three-phase contact through a spring mechanism, the three-phase contact is positioned in the arc extinguish chamber, the spring mechanism is sealed in an air chamber of the arc extinguish chamber, the arc extinguish chamber is a transparent housing, and observation windows for observing the motion range of the three-phase contact are arranged at the bottom and the side surface of the box body; the 10kv conducting wire is connected with the upper contact, the upper contact is connected with the lower contact through a lead in the arc extinguishing chamber, and the lower contact is connected with the lower lead. The invention can quickly isolate the crossing cable and shorten the power failure time of fault treatment; after the cable fault is repaired, the power supply can be quickly recovered.)

1. The utility model provides a circuit breaker on post, includes circuit breaker and circuit breaker base, its characterized in that:

the base is fixedly connected with the electric pole, and the circuit breaker is connected to the base through a firmware;

the circuit breaker comprises a box body, an arc extinguish chamber, a three-phase contact, an operating handle, an upper connecting contact and a lower connecting contact, wherein the arc extinguish chamber is arranged in the box body, the operating handle is arranged on the side surface of the box body and is connected with the three-phase contact through a spring mechanism, the three-phase contact is positioned in the arc extinguish chamber, the spring mechanism is sealed in an air chamber of the arc extinguish chamber, the arc extinguish chamber is a transparent housing, and observation windows for observing the motion range of the three-phase contact are arranged at the bottom and the side surface of the box body;

the 10kv conducting wire is connected with the upper contact, the upper contact is connected with the lower contact through a lead in the arc extinguishing chamber, and the lower contact is connected with the lower lead through a lightning arrester.

2. The pole-mounted circuit breaker according to claim 1, wherein the base is composed of an anchor ear and a triangular support, the base is connected with the electric pole through the anchor ear, and the triangular support supports the circuit breaker.

3. The pole-mounted circuit breaker according to claim 1, wherein the box body is provided with a switch-on/off position indicator or a switch-on/off indication mark corresponding to the movable range of the operating handle.

4. The pole top circuit breaker according to claim 1, wherein a gas pressure gauge is provided on a side surface of the case, and the gas pressure gauge detects gas pressure in the arc extinguishing chamber.

5. The pole-mounted circuit breaker as recited in claim 1, wherein the case is provided with a suspension ring.

Technical Field

The invention relates to a pole-mounted circuit breaker used in the field of electric power engineering.

Background

The fully insulated transformation project is the most important one in the lean operation and maintenance and fault voltage drop project of the distribution network equipment, and has great significance for improving the capability of the net rack for preventing external force faults. At present, the electric power industry is combining various engineering projects, and accelerating the full insulation transformation of a distribution line in a non-power-off operation mode is realized, so that the tripping faults caused by external force factors such as external foreign matters, small animals and the like are reduced. A large number of crossing cables exist in the district in the urban district at present, and the traditional outgoing cable and a 10kv lead wire are directly connected through a connecting hardware fitting in the existing crossing cable pole climbing mode. When the crossing cable connected among the lines has a fault, the power needs to be cut off to remove the connection at the two ends of the cable so as to carry out fault finding, repairing and normal test on the cable. After repair, the two ends of the cable need to be lapped in an electrified way. For cables which are not capable of being charged and have two disassembled ends, cable splicing is needed, and cable class is matched with live cable tail splicing in the field after a pilot test. If the rear end of the crossing cable has users, live working can not be carried out, the power restoration time of the crossing cable is prolonged, the repair cable needs to be subjected to power failure lap joint, and the number of users is reduced when the power failure occurs to the users.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a pole-mounted circuit breaker which can quickly isolate a spanning cable, shorten the fault processing power failure time and reduce the household consumption during the fault power failure. After the cable fault is repaired, the power can be directly transmitted, and the problem that the number of households is consumed when the power is cut off due to the fact that follow-up power failure lap joint recovery is possible is solved.

One technical scheme for achieving the above purpose is as follows: a pole-mounted circuit breaker comprises a circuit breaker and a circuit breaker base;

the base is fixedly connected with the electric pole, and the circuit breaker is connected to the base through a firmware;

the circuit breaker comprises a box body, an arc extinguish chamber, a three-phase contact, an operating handle, an upper connecting contact and a lower connecting contact, wherein the arc extinguish chamber is arranged in the box body, the operating handle is arranged on the side surface of the box body and is connected with the three-phase contact through a spring mechanism, the three-phase contact is positioned in the arc extinguish chamber, the spring mechanism is sealed in an air chamber of the arc extinguish chamber, the arc extinguish chamber is a transparent housing, and observation windows for observing the motion range of the three-phase contact are arranged at the bottom and the side surface of the box body;

the 10kv conducting wire is connected with the upper contact, the upper contact is connected with the lower contact through a lead in the arc extinguishing chamber, and the lower contact is connected with the lower lead.

Further, the base comprises staple bolt and triangle support, the base passes through the staple bolt and is connected with the pole, the triangle support is right the circuit breaker supports.

Furthermore, a switch-off and switch-on position indicator or a switch-on and switch-off indicating mark is arranged on the box body corresponding to the moving range of the operating handle.

Furthermore, a barometer is arranged on the side face of the box body and used for detecting air pressure in the arc extinguishing chamber.

Furthermore, a hanging ring is arranged on the box body.

The pole-mounted circuit breaker has the following advantages:

1. the visual window is provided, and the problem that the lead needs to be obviously disconnected when being overlapped in an electrified way is solved.

2. Pulling the load to quickly isolate the fault;

3. rapidly recovering power transmission after fault repair;

4. the problem of charging and discharging during cable lapping is solved;

5. avoid the user to have a power failure, improve the power supply reliability.

Drawings

Fig. 1 is a schematic structural view of a pole top circuit breaker according to the present invention;

fig. 2 is a bottom view of a pole top circuit breaker of the present invention.

Detailed Description

In order to better understand the technical solution of the present invention, the following detailed description is made by specific examples:

referring to fig. 1 and 2, a pole mounted circuit breaker of the present invention includes a circuit breaker 1 and a circuit breaker base 2.

The base 2 is composed of a hoop 21 and a triangular support 22. The base 2 is connected with the electric pole through the hoop 21, and the triangular support 22 supports the circuit breaker 1.

The circuit breaker 1 comprises a box 11, an arc extinguishing chamber, a three-phase contact and operating handle 12, an upper connecting contact 13 and a lower connecting contact 14.

The arc extinguishing chamber is arranged in the box body and is provided with a three-phase integrated linkage type linear gas arc extinguishing chamber, the arc extinguishing chamber is provided with a transparent housing, and the moving contact blows at the contact arc drawing position of the contact to extinguish arc by utilizing the air pressure difference between the front chamber and the rear chamber generated by the cooperation with the housing in the moving process. And the bottom and the side surface of the box body are provided with observation windows 15 for observing the motion range of the three-phase contact.

Operating handle 12 sets up in the box side to be connected with the three-phase contact through spring mechanism, the three-phase contact is located the explosion chamber, and spring mechanism seals in the air chamber of explosion chamber, thoroughly isolated external atmosphere, ensures dampproofing, dustproof, rust-resistant leakproofness, uses long-term lubricating material, reaches non-maintaining in the maintenance cycle. The box body is provided with a switch-on/off position indicator or a switch-on/off indicating mark corresponding to the moving range of the operating handle. The indicator or the indicating mark provides state indication of two independent principles together with a three-phase contact visible fracture observed on a box observation window in class, and accuracy of indication information is ensured.

The side of the box body 11 is provided with a barometer which detects the air pressure in the arc extinguishing chamber. Besides the specific air pressure reading, clear visible red and green area indication is provided, so that the air pressure of the switch can be conveniently confirmed to be within a normal range; the switch design can operate at full power in the bottom region of the green zone (30 kPa).

The box body 11 is provided with a lifting ring for lifting, so that the switch equipment in suspension is kept horizontal, the lifting chain is not in frictional contact with any part, and the surface of the box body is prevented from being scratched in the lifting process.

The 10kv lead 3 is connected with an upper contact 13, the upper contact 13 is connected with a lower contact 14 through a lead in the arc extinguishing chamber, and the lower contact 14 is connected with a lower lead 5 through the lightning arrester 4.

When the pole-mounted circuit breaker is operated, the barometer needs to be checked to be in a green range before the handle is operated to pull the switch on and off. The position of the knife switch needs to be checked through the visual window after the handle is pulled open and closed.

At present, products in the market can be insulated in a closing state, and have no obvious electrified bare dew point, but when a switch is in an opening state, equipment with a visible disconnection point always has a contact with the electrified bare dew point, which is a short plate for essentially insulating the equipment. The key point of the invention is to realize the essential insulation of the product, namely the all-insulation visible breaker. Meanwhile, on the basis of intrinsic insulation, the insulation of the remote visible fracture is ensured, and the fracture on-off condition can be conveniently checked on the lower side of the electric pole.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.