An auxiliary device for pole-mounted circuit breaker electrically conductive structure temperature rise test

Abstract

The utility model discloses a kind of auxiliary devices for the temperature rise test of support type circuit breaker conducting structure, it is related to electric power equipment application technical field, include upper triangular plate, outgoing line support plate, lower triangular plate, prop, top cover and bolt, using upper triangular plate, three props, lower triangular plate and outgoing line support plate, a height-adjustable frame structure is built, to incoming line side and outgoing line side of conducting structure are fixedly installed on the frame structure, and do insulation treatment, the bottom support rod of conducting structure is fixed by top cover and bolt connection mode at bottom, again incoming line terminal and outgoing line terminal are assembled in the corresponding position of conducting structure, the overtravel distance of arc extinguishing chamber is controlled by the depth of screwing control bolt, simulate the state when conducting structure operates.The utility model is low in cost, raw material is easy to get, test result is accurate, break the bottleneck that conducting structure temperature rise test cannot be realized under circuit breaker operating state, suitable for large-scale popularization and application.

Description

Technical Field

[0001] This utility model relates to the field of power equipment application technology, specifically an auxiliary device for temperature rise testing of the conductive structure of a post-type circuit breaker. Background Technology

[0002] The post-type circuit breaker can be used for sectionalizing and connecting 10kV distribution network trunk lines; it adopts a fully sealed and fully insulated design, and the circuit breaker body and remote feeder terminals are powder-coated to meet anti-condensation requirements; all aviation connectors use military-grade parts, and the cables and aviation plugs are fully sealed, possessing an extremely high protection level; it has the function of calculating active power, reactive power, power factor, frequency, and electrical energy; and it has adaptive integrated local feeder automation functions.

[0003] Temperature rise is a crucial indicator for electrical equipment, and circuit breakers, due to their relatively enclosed structure, consistently exhibit high temperature rises. Furthermore, because the conductive structure of a post-mounted circuit breaker is housed within a semi-enclosed insulating sleeve, temperature rise tests on post-mounted circuit breakers can only detect the temperature rise at the incoming and outgoing terminals. Additionally, since the arc-extinguishing chamber of a post-mounted circuit breaker requires an overtravel of 2-3 mm during actual operation, it is impossible to directly conduct temperature rise tests in a laboratory using a pre-assembled conductive structure. Summary of the Invention

[0004] To address the aforementioned technical problems, this utility model provides an auxiliary device for temperature rise testing of the conductive structure of a post-type circuit breaker. This device simulates the current-carrying state of the conductive structure under circuit breaker operation conditions in the laboratory, thereby obtaining more accurate temperature rise test data for the circuit breaker's conductive structure and ensuring the safety and stability of the circuit breaker's operation.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An auxiliary device for temperature rise testing of the conductive structure of a post-type circuit breaker includes an upper triangular plate, a lead-out support plate, a lower triangular plate, a support column, a top cover, and bolts. The upper and lower triangular plates are triangular plate structures of the same size. Three support columns are vertically fixed at the three vertices of the upper and lower triangular plates to form a stable support. The lead-out support plate is a symmetrically bent piece with a hole in the middle, and its two sides are fixed at the same positions of any two of the support columns. An inlet hole is provided in the middle of the upper triangular plate, and a lead-out support plate is provided in the middle of the upper triangular plate. A cable outlet hole is provided, and a fixing hole is provided at the corresponding position of the cable inlet hole of the lower triangular plate and the cable outlet hole of the upper triangular plate. The cable inlet hole is used to fix the cable inlet side of the conductive structure and to provide insulation. The cable outlet hole is used to fix the cable outlet side of the conductive structure and to provide insulation. The fixing hole is used to fix the bottom support of the conductive structure. The top cover is fixedly set below the fixing hole of the lower triangular plate by bolts to support the bottom support. The overtravel distance of the arc-extinguishing chamber of the conductive structure is controlled by controlling the screwing depth of the bolts to simulate the state of the conductive structure during operation. A laboratory temperature rise test of the conductive structure of the post-type circuit breaker is conducted by connecting a cable.

[0006] An inlet insulating sleeve is provided above the inlet hole on the upper triangular plate, and an insulating pad is provided between the upper surface of the arc-extinguishing chamber of the conductive structure and the upper triangular plate to achieve insulation between the device and the inlet side of the arc-extinguishing chamber of the conductive structure.

[0007] An insulating sleeve is provided on the outside of the outlet hole on the outlet support plate to achieve insulation between the device and the outlet side of the conductive rod of the conductive structure.

[0008] The bolts are provided in three positions, and the top cover and the lower triangular plate are provided with three through holes that are adapted to the bolts.

[0009] The upper and lower triangular plates are connected to the three pillars by threads, and their vertical positions are adjustable.

[0010] The inlet insulating sleeve and insulating pad are made of polytetrafluoroethylene material. The outgoing wire insulation sleeve is made of polytetrafluoroethylene.

[0011] The stationary end of the arc-extinguishing chamber of the conductive structure passes through the inlet hole of the upper triangular plate and is fixed by a copper nut. The conductive rod of the conductive structure passes through the outlet hole of the outlet support plate and is fixed by a copper nut. Finally, the inlet terminal and the outlet terminal are assembled to the inlet side and outlet side of the conductive structure, respectively.

[0012] The top cover is located below the fixing hole of the lower triangular plate. The lower triangular plate has three threaded holes for connecting with bolts. The top cover has through holes corresponding to the positions of the three threaded holes for the bolts to pass through. After the bolts pass through the top cover, they are screwed into the threaded holes of the lower triangular plate. After tightening, the top cover presses against the bottom support rod of the conductive structure, thereby fixing the bottom of the conductive structure.

[0013] The cable outlet support plate is fixedly connected to the three pillars by adhesive.

[0014] The beneficial effects of this utility model are as follows: 1. An adjustable-height frame structure was constructed using an upper triangular plate, three pillars, a lower triangular plate, and an outgoing support plate. The incoming and outgoing sides of the conductive structure were fixedly installed on the frame structure and insulated. The bottom support rod of the conductive structure was fixed at the bottom by a top cover and bolt connection. The incoming and outgoing terminals were then assembled in the corresponding positions of the conductive structure. The overtravel distance of the arc-extinguishing chamber was controlled by controlling the screwing depth of the bolts to simulate the state of the conductive structure during operation. The temperature rise test conducted in this way is the most realistic and accurate. 2. The structure is simple. The entire device is installed using bolts and nuts, which makes it easy to disassemble and adjust. It is suitable for temperature rise testing of various types of conductive structures and has a wide range of applications. 3. Low cost and readily available raw materials: It breaks through the bottleneck of the inability to conduct temperature rise tests on the conductive structure under circuit breaker operation at a relatively low cost, providing an important basis for monitoring the operation status and improving the stability of circuit breakers, and is suitable for large-scale promotion and application. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 A schematic diagram of a conductive structure assembled on this utility model; Figure 3 This is a schematic diagram of a conductive structure. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments: like Figure 1-3As shown, the auxiliary device for temperature rise testing of the conductive structure of a post-type circuit breaker includes an upper triangular plate 2, a lead-out support plate 5, a lower triangular plate 7, a support column 4, a top cover 8, and bolts 9. The upper triangular plate 2 and the lower triangular plate 7 are triangular plate structures of the same size. Three support columns 4 are respectively vertically fixed at the three vertices of the upper triangular plate 2 and the lower triangular plate 7 to form a stable support. The lead-out support plate 5 is a symmetrical bent piece with a hole in the middle, and its two sides are respectively fixed at the same position of any two of the support columns 4. The upper triangular plate 2 has an inlet hole in the middle position, and the lead-out support plate 5 has a... A wire outlet hole is provided, and a fixing hole is provided at the corresponding position of the wire inlet hole of the lower triangular plate 7 and the upper triangular plate 2. The wire inlet hole is used to fix the wire inlet side of the conductive structure 10 and to perform insulation treatment. The wire outlet hole is used to fix the wire outlet side of the conductive structure 10 and to perform insulation treatment. The fixing hole is used to fix the bottom support of the conductive structure 10. The top cover 8 is fixedly set below the fixing hole of the lower triangular plate 7 by bolts 9 to support the bottom support. The overtravel distance of the arc extinguishing chamber of the conductive structure 10 is controlled by controlling the screwing depth of the bolts 9 to simulate the state of the conductive structure 10 during operation. A laboratory temperature rise test of the conductive structure of the post-type circuit breaker is carried out by connecting a cable.

[0017] As a preferred embodiment, in this embodiment, an inlet insulating sleeve 1 is provided above the inlet hole on the upper triangular plate 2, and an insulating pad 3 is provided between the upper surface of the arc-extinguishing chamber 1002 of the conductive structure 10 and the upper triangular plate 2 to achieve insulation treatment between the device and the inlet side of the arc-extinguishing chamber 1002 of the conductive structure 10.

[0018] As a preferred embodiment, in this embodiment, an insulating sleeve 6 is provided on the outside of the outlet hole on the outlet support plate 5 to achieve insulation between the device and the outlet side of the conductive rod 1003 of the conductive structure 10.

[0019] As a preferred embodiment, in this embodiment, three bolts 9 are provided, and three through holes adapted to the bolts 9 are provided at corresponding positions on the top cover 8 and the lower triangular plate 7.

[0020] In this preferred embodiment, the upper triangular plate 2 and the lower triangular plate 7 are connected to the three pillars 4 by threads, and their vertical positions are adjustable.

[0021] As a preferred embodiment, in this embodiment, the incoming line insulating sleeve 1 and the insulating pad 3 are made of polytetrafluoroethylene (PTFE).

[0022] As a preferred embodiment, the insulating sleeve 6 is made of polytetrafluoroethylene.

[0023] In a preferred embodiment, the stationary end of the arc-extinguishing chamber 1002 of the conductive structure 10 passes through the inlet hole of the upper triangular plate 2 and is fixed by a copper nut 11. The conductive rod 1003 of the conductive structure 10 passes through the outlet hole of the outlet support plate 5 and is fixed by a copper nut 12. Finally, the inlet terminal 1001 and the outlet terminal 1004 are respectively assembled to the inlet side and outlet side of the conductive structure 10.

[0024] In a preferred embodiment, the top cover 8 is positioned below the fixing hole of the lower triangular plate 7. The lower triangular plate 7 has three threaded holes for connecting with the bolt 9. The top cover 8 has through holes corresponding to the positions of the three threaded holes for the bolt 9 to pass through. After the bolt 9 passes through the top cover 8, it is screwed into the threaded hole of the lower triangular plate 7. After tightening, the top cover 8 presses against the bottom support rod 1005 of the conductive structure 10, thereby fixing the bottom of the conductive structure 10.

[0025] In this preferred embodiment, the cable support plate 5 is fixedly connected to the three support columns 4 by adhesive bonding.

[0026] In the specific installation and operation process of this utility model, the support column 4 consists of three identical columns, each with external threads at both ends, one end being a positive thread and the other a negative thread. The upper triangular plate 2 and the lower triangular plate 7 each have a centrally located hole serving as an inlet and outlet hole. Three internally threaded holes are correspondingly located around the central hole in the triangular area for connecting the three support columns 4. The internal threaded holes in the upper triangular plate 2 are positive threads, and those in the lower triangular plate 7 are negative threads. The distance between the upper triangular plate 2 and the lower triangular plate 7 can be adjusted according to the thread tightening size to meet the temperature rise test requirements of conductive structures of different sizes. The outlet support plate 5 is fixedly connected to the three support columns 4 by adhesive bonding, also to achieve position adjustment and meet the needs of conductive structures of different sizes.

[0027] After the stationary end of the arc-extinguishing chamber 1002 of the conductive structure 10 is passed through the inlet hole and insulated, it is fixed by copper nut 11 and connected to the inlet terminal 1001. After the conductive rod 1003 of the conductive structure 10 is passed through the outlet hole and insulated, it is fixed by copper nut 12 and connected to the outlet terminal 1004. The bottom support rod 1005 of the conductive structure 10 is fixed in the through hole of the top cover 8. The lower triangular plate 7 is provided with three threaded holes for screwing in three bolts 9. The top cover 8 is provided with three through holes corresponding to the threaded holes on the lower triangular plate 7. The bolts 9 are screwed into the bolt holes through the top cover 8 to connect the top cover 8 and the lower triangular plate 7 until the top cover 8 presses against the bottom support rod 1005 of the conductive structure 10, and the installation is completed.

[0028] At this point, the cable is connected to the inlet terminal 1001 and outlet terminal 1004 of the conductive structure 10, and a temperature rise test can be performed. The ultrasonic distance of the arc-extinguishing chamber 1002 in the conductive structure 10 can be controlled by controlling the screwing depth of the bolt 9, simulating the state of the conductive structure during operation, and the measurement results are accurate.

[0029] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. An auxiliary device for temperature rise testing of the conductive structure of a post-type circuit breaker, characterized in that, It includes an upper triangular plate (2), a cable outlet support plate (5), a lower triangular plate (7), a support column (4), a top cover (8), and bolts (9). The upper triangular plate (2) and the lower triangular plate (7) are set as triangular plate structures of the same size. The support column (4) consists of three columns, which are respectively vertically fixed at the three vertices of the upper triangular plate (2) and the lower triangular plate (7) to form a stable support. The cable outlet support plate (5) is a symmetrical bent piece with a hole in the middle, and its two sides are respectively fixed at the same position of any two of the support columns (4). The upper triangular plate (2) has a cable inlet hole in the middle position, and the cable outlet support plate (5) has a cable outlet hole in the middle position. The lower triangular plate (7) has a cable outlet hole in the middle position, and the lower triangular plate (8) has a cable outlet hole in the middle position. Fixing holes are provided at the corresponding positions of the inlet holes of the corner plate (7) and the upper triangular plate (2). The inlet holes are used to fix the inlet side of the conductive structure (10) and perform insulation treatment. The outlet holes are used to fix the outlet side of the conductive structure (10) and perform insulation treatment. The fixing holes are used to fix the bottom support of the conductive structure (10). The top cover (8) is fixedly set below the fixing hole of the lower triangular plate (7) by bolts (9) to support the bottom support. The overtravel distance of the arc-extinguishing chamber of the conductive structure (10) is controlled by controlling the screwing depth of the bolts (9) to simulate the state of the conductive structure (10) during operation. After connecting the cable, a laboratory temperature rise test of the conductive structure of the post-type circuit breaker is carried out.

2. The auxiliary device for temperature rise testing of the conductive structure of a post-type circuit breaker according to claim 1, characterized in that, An inlet insulating sleeve (1) is provided above the inlet hole on the upper triangular plate (2), and an insulating pad (3) is provided between the upper surface of the arc-extinguishing chamber (1002) of the conductive structure (10) and the upper triangular plate (2) to achieve insulation treatment between the device and the inlet side of the arc-extinguishing chamber (1002) of the conductive structure (10).

3. The auxiliary device for temperature rise testing of the conductive structure of a post-type circuit breaker according to claim 1, characterized in that, An insulating sleeve (6) is provided on the outside of the outlet hole on the outlet support plate (5) to achieve insulation between the device and the outlet side of the conductive rod (1003) of the conductive structure (10).

4. The auxiliary device for temperature rise testing of the conductive structure of a post-type circuit breaker according to claim 1, characterized in that, The bolts (9) are set to three, and the top cover (8) and the lower triangular plate (7) are provided with three through holes that are adapted to the bolts (9) at corresponding positions.

5. The auxiliary device for temperature rise testing of the conductive structure of a post-type circuit breaker according to claim 1, characterized in that, The upper triangular plate (2) and the lower triangular plate (7) are connected to the three pillars (4) by threads, and their upper and lower positions are adjustable.

6. An auxiliary device for temperature rise testing of the conductive structure of a post-type circuit breaker according to claim 2, characterized in that, The inlet insulating sleeve (1) and insulating pad (3) are made of polytetrafluoroethylene.

7. An auxiliary device for temperature rise testing of the conductive structure of a post-type circuit breaker according to claim 3, characterized in that, The outgoing insulating sleeve (6) is made of polytetrafluoroethylene.

8. The auxiliary device for temperature rise testing of the conductive structure of a post-type circuit breaker according to claim 1, characterized in that, The stationary end of the arc-extinguishing chamber (1002) of the conductive structure (10) passes through the inlet hole of the upper triangular plate (2) and is fixed by copper nut one (11). The conductive rod (1003) of the conductive structure (10) passes through the outlet hole of the outlet support plate (5) and is fixed by copper nut two (12). Finally, the inlet terminal (1001) and outlet terminal (1004) are respectively assembled to the inlet side and outlet side of the conductive structure (10).

9. An auxiliary device for temperature rise testing of the conductive structure of a post-type circuit breaker according to claim 1, characterized in that, The top cover (8) is located below the fixing hole of the lower triangular plate (7). The lower triangular plate (7) has three threaded holes for connecting with the bolt (9). The top cover (8) has through holes corresponding to the positions of the three threaded holes for the bolt (9) to pass through. After the bolt (9) passes through the top cover (8), it is screwed into the threaded hole of the lower triangular plate (7). After tightening, the top cover (8) presses against the bottom support rod (1005) of the conductive structure (10), thereby fixing the bottom of the conductive structure (10).

10. An auxiliary device for temperature rise testing of the conductive structure of a post-type circuit breaker according to claim 1, characterized in that, The cable support plate (5) is fixedly connected to the three pillars (4) by pasting.

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