Pole-mounted circuit breaker detection device

Abstract

The utility model discloses a pole-mounted circuit breaker detection device which comprises a bottom plate, four corners of the top of the bottom plate are fixedly connected with electric telescopic rods, output ends of the electric telescopic rods are fixedly connected with movable sealing covers, and the top of the bottom plate is provided with a circuit breaker body. The top of the circuit breaker body is provided with a plurality of ceramic columns which are uniformly distributed. The electric telescopic rod is started to contract, the movable sealing cover is driven to move downwards, the knob insulator enters the circular cover, the pressure sensor sends a signal to the vacuumizer to enable the vacuumizer to operate, whether the numerical value of the pressure gauge is changed or not is observed, and the leaked knob insulator can be accurately found through the corresponding pressure gauge when leakage occurs. The effects of respectively detecting each knob insulator, improving the detection accuracy, detecting the sealing effect of the shell of the circuit breaker while detecting the knob insulator, improving the detection efficiency and facilitating the use of a user are achieved.

Description

Technical Field

[0001] This utility model relates to the field of pole-mounted circuit breaker technology, specifically a pole-mounted circuit breaker detection device. Background Technology

[0002] Pole-mounted circuit breakers are circuit breakers installed and operated on utility poles. Significant progress has been made in the research and manufacturing technology of various circuit breakers. Vacuum circuit breakers are no longer limited to medium-voltage power grids but are developing towards high voltage and large capacity. Sulfur hexafluoride (SF6) circuit breakers have many advantages, such as strong breaking capacity, high continuous breaking capacity, frequent operation, low operating noise, and no fire hazard, making them an excellent oil-free device. Vacuum circuit breakers enhance insulation performance and prevent moisture intrusion by filling the porcelain column with dry nitrogen or sulfur hexafluoride (SF6) gas. However, the sealing requirements for the porcelain column are high, and its sealing performance needs to be tested before leaving the factory. Vacuum testing is commonly used to test the porcelain column's sealing performance. However, testing the porcelain column using a single sealing cylinder is inefficient and inconvenient for comprehensive testing of the vacuum circuit breaker, causing inconvenience to users.

[0003] Therefore, it is necessary to modify it by setting up multiple sealing cylinders to test each porcelain column separately, thereby improving the accuracy of the test. When testing the porcelain column, the sealing effect of the circuit breaker casing is also tested at the same time, which improves the testing efficiency and makes it more convenient for users. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a pole-mounted circuit breaker testing device. This device has the advantages of separately testing each porcelain pole, improving testing accuracy, and simultaneously testing the sealing effect of the circuit breaker casing while testing the porcelain pole, thereby improving testing efficiency and facilitating user operation. It solves the problems of low efficiency in testing porcelain poles with a single sealing cylinder and the inconvenience caused to users by making it difficult to conduct comprehensive testing of vacuum circuit breakers.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pole-mounted circuit breaker detection device, comprising a base plate, electric telescopic rods fixedly connected to the four corners of the top of the base plate, a movable sealing cover fixedly connected to the output end of the electric telescopic rods, a circuit breaker body disposed on the top of the base plate, a plurality of evenly distributed ceramic columns disposed on the top of the circuit breaker body, a plurality of evenly distributed sealing cylinders fixedly connected to the top of the inner wall of the movable sealing cover, and a circular cover slidably connected inside each sealing cylinder, the left and right sides of the circular cover being slidably connected to the inner wall of the sealing cylinder, compression springs fixedly connected to the left and right sides of the top of the circular cover, the top of the compression springs being fixedly connected to the top of the inner wall of the sealing cylinder, a pressure sensor fixedly connected to the center of the top of the inner wall of the sealing cylinder, a vacuum pump fixedly connected to the top of the movable sealing cover, the input end of the back of the vacuum pump communicating with the back of the sealing cylinder through a first connecting pipe, the input end of the front of the vacuum pump communicating with the top of the movable sealing cover through a second connecting pipe, and pressure gauges communicating with the surface of the first connecting pipe and the top of the movable sealing cover.

[0006] In a preferred embodiment of this invention, a sealing plate is fixedly connected to the top of the base plate, the length and width of the sealing plate being the same as the length and width of the inner surface of the movable sealing cover, a sealing strip is fixedly connected to the bottom of the movable sealing cover, and the retraction distance of the electric telescopic rod is the same as the distance from the bottom of the sealing strip to the top of the base plate.

[0007] As a preferred embodiment of this utility model, the top of the sealing plate is fixedly connected to a limiting frame by bolts, the right side of the limiting frame has a notch, and the inner surface of the limiting frame is in contact with the surface of the circuit breaker body.

[0008] In a preferred embodiment of this invention, a sealing ring is fixedly connected to the bottom of the sealing cylinder, the inner diameter of the sealing cylinder is the same as the outer diameter of the ceramic column base, the inner diameter of the circular cover is larger than the outer diameter of the ceramic column body, and the distance from the bottom of the sealing ring to the bottom of the pressure sensor is the same as the height of the ceramic column.

[0009] As a preferred embodiment of this utility model, T-shaped blocks are fixedly connected to the upper part of both the left and right sides of the circular cover, and T-shaped grooves that cooperate with the T-shaped blocks are opened on both the left and right sides of the inner wall of the sealing cylinder. The surface of the T-shaped block is slidably connected to the inner wall of the T-shaped groove.

[0010] As a preferred embodiment of this utility model, the front of the movable sealing cover is provided with an observation groove, and a pressure-resistant transparent glass is fixedly connected inside the observation groove. A sealing ring is fixedly connected to all four sides of the pressure-resistant transparent glass, and the surface of the sealing ring is fixedly connected to the inner wall of the movable sealing cover.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model involves placing the circuit breaker to be tested above the base plate, positioning it inside the limiting frame and aligned with the movable sealing cover. This aligns the porcelain column with the sealing cylinder. Then, the electric telescopic rod is activated to retract, causing the movable sealing cover to move downwards. As the movable sealing cover moves downwards, the porcelain column enters the interior of the circular cover. The top of the porcelain column pushes the circular cover upwards inside the sealing cylinder until the bottom of the movable sealing cover is in contact with the top of the base plate. The bottom of the inner wall of the sealing cylinder is in contact with the bottom surface of the porcelain column, completely sealing and surrounding it. The circular cover is then pushed upwards and retracted by the compression spring. The top of the circular cover contacts the pressure sensor, which sends a signal to the vacuum pump to activate it. Through the first and second connecting pipes, the pressure inside the sealing cylinder and the movable sealing cover is evacuated to below 133.3 Pa. After standing for half an hour, the pressure gauge reading is observed to see if there is any change. When a leak occurs, the corresponding pressure gauge can accurately locate the leaking ceramic column, thus achieving separate detection of each ceramic column and improving detection accuracy. While detecting the ceramic column, the sealing effect of the circuit breaker casing is also detected, improving detection efficiency and facilitating user operation.

[0013] 2. By using a sealing plate and a sealing strip in combination, when the bottom of the movable sealing cover is in contact with the top of the base plate, the outer surface of the sealing plate is in contact with the inner wall of the sealing strip, which seals the contact surface between the movable sealing cover and the base plate, preventing air leakage from affecting use and further improving the accuracy of airtightness testing of the circuit breaker housing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a frontal sectional view of the present invention.

[0016] Figure 3 This is a schematic diagram of the right-side cross-sectional structure of this utility model;

[0017] Figure 4 This utility model Figure 2 A magnified structural diagram of A in the middle.

[0018] In the diagram: 1. Base plate; 2. Electric telescopic rod; 3. Movable sealing cover; 4. Circuit breaker body; 5. Porcelain column; 6. Sealing cylinder; 7. Circular cover; 8. Compression spring; 9. Vacuum pump; 10. Sealing plate; 11. Sealing strip; 12. Limiting frame; 13. Sealing ring; 14. T-block; 15. T-slot; 16. Pressure-resistant transparent glass; 17. Sealing ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 4 As shown, the present invention provides a pole-mounted circuit breaker testing device, comprising a base plate 1, with electric telescopic rods 2 fixedly connected to the four corners of the top of the base plate 1, and movable sealing covers 3 fixedly connected to the output ends of the electric telescopic rods 2. A circuit breaker body 4 is mounted on the top of the base plate 1, and a plurality of evenly distributed porcelain columns 5 are mounted on the top of the circuit breaker body 4. A plurality of evenly distributed sealing cylinders 6 are fixedly connected to the top of the inner wall of the movable sealing cover 3, the number of sealing cylinders 6 being the same as the number of porcelain columns 5 and arranged in a one-to-one correspondence. A circular cover 7 is slidably connected inside each sealing cylinder 6. The left and right sides of the cover 7 are slidably connected to the inner wall of the sealing cylinder 6. The left and right sides of the top of the circular cover 7 are fixedly connected to the compression springs 8. The top of the compression springs 8 is fixedly connected to the top of the inner wall of the sealing cylinder 6. A pressure sensor is fixedly connected to the center of the top of the inner wall of the sealing cylinder 6. A vacuum pump 9 is fixedly connected to the top of the movable sealing cover 3. The input end of the back of the vacuum pump 9 is connected to the back of the sealing cylinder 6 through the first connecting pipe. The input end of the front of the vacuum pump 9 is connected to the top of the movable sealing cover 3 through the second connecting pipe. Pressure gauges are connected to the surface of the first connecting pipe and the top of the movable sealing cover 3.

[0021] refer to Figure 2 A sealing plate 10 is fixedly connected to the top of the base plate 1. The length and width of the sealing plate 10 are the same as the length and width of the inner surface of the movable sealing cover 3. A sealing strip 11 is fixedly connected to the bottom of the movable sealing cover 3. The retraction distance of the electric telescopic rod 2 is the same as the distance between the bottom of the sealing strip 11 and the top of the base plate 1.

[0022] As a technical optimization of this utility model, by setting the sealing plate 10 and the sealing strip 11 to work together, when the bottom of the movable sealing cover 3 is in contact with the top of the base plate 1, the outer surface of the sealing plate 10 is in contact with the inner wall of the sealing strip 11, which has a sealing effect on the contact surface between the movable sealing cover 3 and the base plate 1, avoiding air leakage that would affect the use, and further improving the accuracy of the airtightness test of the circuit breaker housing.

[0023] refer to Figure 2 The top of the sealing plate 10 is fixedly connected to the limiting frame 12 by bolts. The limiting frame 12 has a notch on the right side and the inner surface of the limiting frame 12 is in contact with the surface of the circuit breaker body 4.

[0024] As a technical optimization of this utility model, by setting a limiting frame 12, the circuit breaker body 4 is limited during testing, so that it can be on the same axis as the movable sealing cover 3. When the movable sealing cover 3 moves downward, the sealing cylinder 6 can be accurately fitted onto the surface of the porcelain column 5 to perform sealing testing, avoiding the situation where the circuit breaker body 4 is displaced during testing, which would prevent the sealing test from being completed and affect its use. By setting a notch, the circuit breaker body 4 can be easily pulled out or put in from the right side.

[0025] refer to Figure 2 A sealing ring 13 is fixedly connected to the bottom of the sealing cylinder 6. The inner diameter of the sealing cylinder 6 is the same as the outer diameter of the ceramic column 5 base. The inner diameter of the circular cover 7 is larger than the outer diameter of the ceramic column 5 body. The distance from the bottom of the sealing ring 13 to the bottom of the pressure sensor is the same as the height of the ceramic column 5.

[0026] As a technical optimization of this utility model, by setting a sealing ring 13, when the sealing cylinder 6 is fitted onto the surface of the ceramic column 5, the bottom of the sealing ring 13 fits against the top of the outer shell of the circuit breaker body 4, which seals the gap between the sealing cylinder 6 and the contact surface of the circuit breaker body 4, improving the detection airtightness. By setting the distance from the bottom of the sealing ring 13 to the bottom of the pressure sensor to be the same as the height of the ceramic column 5, it is ensured that when the sealing cylinder 6 is completely fitted onto the surface of the ceramic column 5, the ceramic column 5 pushes the top of the circular cover 7 to contact the pressure sensor, so that the vacuum pump 9 performs a vacuuming operation after sealing is completed.

[0027] refer to Figure 4 T-shaped blocks 14 are fixedly connected to the upper part of both sides of the circular cover 7. T-shaped grooves 15 that cooperate with the T-shaped blocks 14 are opened on both sides of the inner wall of the sealing cylinder 6. The surface of the T-shaped block 14 is slidably connected to the inner wall of the T-shaped groove 15.

[0028] As a technical optimization of this utility model, by setting the T-shaped block 14 and the T-shaped groove 15 to work together, when the circular cover 7 moves up and down inside the sealing cylinder 6, the T-shaped block 14 slides up and down inside the T-shaped groove 15, which has the effect of lifting and reinforcing the circular cover 7, preventing the circular cover 7 from falling off and affecting its use, and making its movement smoother.

[0029] refer to Figure 1 The movable sealing cover 3 has an observation slot on its front side, and a pressure-resistant transparent glass 16 is fixedly connected inside the observation slot. A sealing ring 17 is fixedly connected around the pressure-resistant transparent glass 16, and the surface of the sealing ring 17 is fixedly connected to the inner wall of the movable sealing cover 3.

[0030] As a technical optimization of this utility model, by setting up the pressure-resistant transparent glass 16, users can intuitively observe the internal components of the movable sealing cover 3, avoiding the situation where internal components are tilted and damaged after long-term use and cannot be replaced in time, thus affecting the use. By setting up the sealing ring 17, the gap between the pressure-resistant transparent glass 16 and the movable sealing cover 3 is sealed, further improving the accuracy of airtightness testing.

[0031] The working principle and usage process of this utility model are as follows: The circuit breaker to be tested is placed above the base plate 1, positioned inside the limiting frame 12 and aligned with the movable sealing cover 3. This aligns the ceramic column 5 with the sealing cylinder 6. Then, the electric telescopic rod 2 is activated to retract, causing the movable sealing cover 3 to move downwards. As the movable sealing cover 3 moves downwards, the ceramic column 5 enters the interior of the circular cover 7. The top of the ceramic column 5 pushes the circular cover 7 upwards inside the sealing cylinder 6 until the bottom of the movable sealing cover 3 is in contact with the top of the base plate 1. The bottom of the inner wall of the sealing cylinder 6 is in contact with the bottom surface of the ceramic column 5, completely sealing and surrounding the ceramic column 5. 7 is pushed upwards and the spring 8 contracts, the top of the circular cover 7 contacts the pressure sensor, the pressure sensor sends a signal to the vacuum pump 9 to start it, and the inside of the sealing cylinder 6 and the movable sealing cover 3 is evacuated to below 133.3 Pa through the first connecting pipe and the second connecting pipe. Then it is left to stand for half an hour and the pressure gauge reading is observed to see if there is any change. When a leak occurs, the leaking porcelain column 5 can be accurately located through the corresponding pressure gauge, thereby achieving the goal of detecting each porcelain column 5 separately, improving the detection accuracy. When detecting the porcelain column 5, the sealing effect of the circuit breaker shell is also detected at the same time, improving the detection efficiency and making it more convenient for users.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pole-mounted circuit breaker detection device, comprising a base plate (1), characterized in that: Electric telescopic rods (2) are fixedly connected to the four corners of the top of the base plate (1). A movable sealing cover (3) is fixedly connected to the output end of the electric telescopic rod (2). A circuit breaker body (4) is provided on the top of the base plate (1). A number of evenly distributed porcelain columns (5) are provided on the top of the circuit breaker body (4). A number of evenly distributed sealing cylinders (6) are fixedly connected to the top of the inner wall of the movable sealing cover (3). A circular cover (7) is slidably connected inside each sealing cylinder (6). The left and right sides of the circular cover (7) are slidably connected to the inner wall of the sealing cylinder (6). (7) Compression springs (8) are fixedly connected to both the left and right sides of the top. The top of the compression springs (8) is fixedly connected to the top of the inner wall of the sealing cylinder (6). A pressure sensor is fixedly connected to the center of the top of the inner wall of the sealing cylinder (6). A vacuum pump (9) is fixedly connected to the top of the movable sealing cover (3). The input end of the back of the vacuum pump (9) is connected to the back of the sealing cylinder (6) through the first connecting pipe. The input end of the front of the vacuum pump (9) is connected to the top of the movable sealing cover (3) through the second connecting pipe. A pressure gauge is connected to both the surface of the first connecting pipe and the top of the movable sealing cover (3).

2. The pole-mounted circuit breaker detection device according to claim 1, characterized in that: A sealing plate (10) is fixedly connected to the top of the base plate (1). The length and width of the sealing plate (10) are the same as the length and width of the inner surface of the movable sealing cover (3). A sealing strip (11) is fixedly connected to the bottom of the movable sealing cover (3). The retraction distance of the electric telescopic rod (2) is the same as the distance from the bottom of the sealing strip (11) to the top of the base plate (1).

3. The pole-mounted circuit breaker detection device according to claim 2, characterized in that: The top of the sealing plate (10) is fixedly connected to the limiting frame (12) by bolts. The limiting frame (12) has a notch on the right side and the inner surface of the limiting frame (12) is in contact with the surface of the circuit breaker body (4).

4. The pole-mounted circuit breaker detection device according to claim 1, characterized in that: The bottom of the sealing cylinder (6) is fixedly connected to a sealing ring (13). The inner diameter of the sealing cylinder (6) is the same as the outer diameter of the ceramic column (5) base. The inner diameter of the circular cover (7) is larger than the outer diameter of the ceramic column (5) body. The distance from the bottom of the sealing ring (13) to the bottom of the pressure sensor is the same as the height of the ceramic column (5).

5. The pole-mounted circuit breaker detection device according to claim 1, characterized in that: T-shaped blocks (14) are fixedly connected to the upper sides of the left and right sides of the circular cover (7). T-shaped grooves (15) that cooperate with the T-shaped blocks (14) are opened on the left and right sides of the inner wall of the sealing cylinder (6). The surface of the T-shaped block (14) is slidably connected to the inner wall of the T-shaped groove (15).

6. The pole-mounted circuit breaker detection device according to claim 1, characterized in that: The movable sealing cover (3) has an observation slot on its front side, and a pressure-resistant transparent glass (16) is fixedly connected inside the observation slot. A sealing ring (17) is fixedly connected around the pressure-resistant transparent glass (16), and the surface of the sealing ring (17) is fixedly connected to the inner wall of the movable sealing cover (3).

Images