Stroke overtravel measurement and slow separation prevention device for sulfur hexafluoride circuit breaker

Abstract

The invention discloses a sulfur hexafluoride circuit breaker stroke overtravel measurement and slow separation prevention device, and relates to the technical field of circuit breakers. The objective of the invention is to solve the problems that there is no auxiliary tool except the circuit breaker to ensure the reliable operation of the circuit breaker, and the reliable operation stroke and the over-stroke size of the moving contact of the circuit breaker cannot be measured. A bearing 5 is arranged at one end of the upper surface of the fixing clamp 6, an outer ring of the bearing 5 is fixedly connected with the upper surface of the fixing clamp 6, the bottom end of a supporting pipe 4 is inserted into an inner ring of the bearing 5, the outer surface of the bottom of the supporting pipe 4 is fixedly connected with the inner wall of the inner ring of the bearing 5, and a plurality of strip-shaped through holes are evenly machined in the top of the outer surface of the supporting pipe 4 in the circumferential direction. A threaded section is machined on the top of the outer surface of the supporting pipe 4, a nut 3 is arranged on the threaded section, the bottom end of the supporting rod 2 is inserted into the supporting pipe 4, a bracket 1 is arranged at the top end of the supporting rod 2, and the nut 3 is used for locking the supporting rod 2 and the supporting pipe 4. The invention is suitable for the technical field of circuit breakers.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit breaker, in particular to a kind of six fluorine sulfur circuit breaker stroke overstroke measurement and prevent slow division device. BACKGROUND

[0002] Circuit breaker is the most important electrical equipment in power system, if circuit breaker cannot quickly, accurately and reliably cut off fault current when power system fails, will cause refusal to move and make fault expand, cause large-area power failure, cause power grid to collapse.Therefore, the reliable degree of operation condition and performance of circuit breaker is an important factor to determine the safety of power system.In actual operation, it is very important, otherwise it will cause arc to be unable to extinguish due to insufficient stroke of moving contact or three-phase different period, cause circuit breaker explosion.

[0003] At present, although six fluorine sulfur circuit breaker is widely used, since the circuit breaker manufacturer promises maintenance-free, so accurate measurement of stroke and overstroke cannot be realized.Accordingly, to realize the detection of stroke, overstroke and synchronization characteristics of six fluorine sulfur circuit breaker, check action characteristic data, detect maintenance quality, ensure reliable action of circuit breaker and other items, it is particularly important.Therefore, to prevent accidents and ensure reliable action of circuit breaker, reliable action and stroke, overstroke size of circuit breaker moving contact must be ensured.

[0004] In summary, at present, there is no auxiliary tool except circuit breaker to ensure reliable action of circuit breaker, and stroke and overstroke size of reliable action of circuit breaker moving contact cannot be measured. SUMMARY

[0005] The present application is to solve the problem that there is no auxiliary tool except circuit breaker to ensure reliable action of circuit breaker, and stroke and overstroke size of reliable action of circuit breaker moving contact cannot be measured, and proposes a kind of six fluorine sulfur circuit breaker stroke overstroke measurement and prevent slow division device.

[0006] The six fluorine sulfur circuit breaker stroke overstroke measurement and prevent slow division device of the present application, its composition includes bracket 1, support rod 2, nut 3, support pipe 4, bearing 5 and fixed clamp 6;

[0007] The upper surface of fixed clamp 6 is provided with bearing 5, and the outer ring of bearing 5 is fixedly connected with the upper surface of fixed clamp 6, the bottom end of support pipe 4 is inserted into the inner ring inside bearing 5, and the bottom outer surface of support pipe 4 is fixedly connected with the inner wall of bearing 5 inner ring, a plurality of strip-shaped through holes are uniformly processed on the top outer surface of support pipe 4 along the circumferential direction, a threaded section is processed on the top outer surface of support pipe 4, nut 3 is arranged on the threaded section, the bottom end of support rod 2 is inserted into the inside of support pipe 4, and the top end of support rod 2 is provided with bracket 1, nut 3 is used to lock support rod 2 and support pipe 4.

[0008] Further, the upper surface of the fixing clamp 6 is machined with a U-shaped through hole at the other end;

[0009] Further, the lower surface of one end of the fixing clamp 6 is provided with a base 7;

[0010] Further, the axis of the fixing clamp 6 is vertically arranged with the axis of the base 7;

[0011] Further, the support rod 2 and the support pipe 4 are slidingly connected;

[0012] Further, the top of the support rod 2 is welded and fixed with the middle part of the outer surface of the bracket 1;

[0013] Further, in use, the device is placed at the lower part of the sulfur hexafluoride circuit breaker, the relative height of the support rod 2 relative to the support pipe 4 is adjusted through the nut 3 according to the distance between the moving contact arm of the sulfur hexafluoride switch mechanism and the ground, the nut 3 is locked after adjustment, so that the bracket 1 lifts the moving contact arm of the sulfur hexafluoride switch mechanism, and the moving contact arm moves up and down to measure the stroke and the overstroke, the direction of the bracket 1 can be adjusted through the bearing 5 of the support pipe 4, no matter whether the moving contact and the static contact are in the closing position or the opening position, the height of the support pipe 4 can be adjusted to adjust the measurement of the stroke and the overstroke, the device mainly uses the bearing to convert the relationship between the moving and the static, the bracket 1 drives the arm, the arm drives the vertical pull rod to conduct the vertical movement of the conductive rod, so that the stroke, the overstroke and the synchronization can be tested.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] The present application overcomes the shortcomings of the prior art, the relative height of the support rod 2 relative to the support pipe 4 is adjusted through the nut 3 according to the distance between the moving contact arm of the sulfur hexafluoride switch mechanism and the ground, the nut 3 is locked after adjustment, so that the bracket 1 lifts the moving contact arm of the sulfur hexafluoride switch mechanism, and the moving contact arm moves up and down to measure the stroke and the overstroke, the direction of the bracket 1 can be adjusted through the bearing 5 of the support pipe 4, no matter whether the moving contact and the static contact are in the closing position or the opening position, the height of the support pipe 4 can be adjusted to adjust the measurement of the stroke and the overstroke, the device mainly uses the bearing to convert the relationship between the moving and the static, the bracket 1 drives the arm, the arm drives the vertical pull rod to conduct the vertical movement of the conductive rod, so that the stroke, the overstroke and the synchronization can be tested, and the reliable operation of the sulfur hexafluoride circuit breaker is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a main sectional view of a sulfur hexafluoride circuit breaker stroke overstroke measurement and slow opening prevention device according to the present application;

[0017] Figure 2 is a top view of the bearing and the fixed clamp in the connected state in a six-sulfur circuit breaker stroke overtravel measurement and slow split prevention device described in the application;

[0018] Figure 3 is a bottom view of the fixed clamp and the base in the connected state in a six-sulfur circuit breaker stroke overtravel measurement and slow split prevention device described in the application. DETAILED DESCRIPTION

[0019] Specific implementation method one: combined Figure 1 and Figure 2 This embodiment describes a six-sulfur circuit breaker stroke overtravel measurement and slow split prevention device, which comprises a bracket 1, a support rod 2, a nut 3, a support pipe 4, a bearing 5 and a fixed clamp 6.

[0020] The upper surface of the fixed clamp 6 is provided with a bearing 5, and the outer ring of the bearing 5 is fixedly connected with the upper surface of the fixed clamp 6. The bottom end of the support pipe 4 is inserted into the inner ring of the bearing 5, and the outer surface of the bottom of the support pipe 4 is fixedly connected with the inner wall of the inner ring of the bearing 5. A plurality of strip-shaped through holes are uniformly processed on the outer surface of the top of the support pipe 4 in the circumferential direction. A threaded section is processed on the outer surface of the top of the support pipe 4, and the threaded section is provided with a nut 3. The bottom end of the support rod 2 is inserted into the inside of the support pipe 4, and the top end of the support rod 2 is provided with a bracket 1. The nut 3 is used to lock the support rod 2 and the support pipe 4.

[0021] In use, the device is placed at the lower part of the six-sulfur circuit breaker. According to the distance between the six-sulfur switch mechanism moving contact arm and the ground, the relative height of the support rod 2 relative to the support pipe 4 is adjusted by the nut 3, and then the nut 3 is locked, so that the bracket 1 lifts the six-sulfur switch mechanism moving contact arm to make it move up and down, thereby measuring the stroke and overstroke. The direction of the bracket 1 can be adjusted by adjusting the bearing 5 of the support pipe 4. Whether the moving and static contacts are in the closing or opening position, the height of the support pipe 4 can be adjusted to adjust the measurement of the stroke and overstroke. This device mainly uses the bearing to convert the relationship between the moving and static contacts, uses the bracket 1 to drive the arm, uses the arm to drive the vertical pull rod to conduct the up and down movement of the conductive rod, thereby testing the stroke, overstroke and synchronization.

[0022] Specific implementation method two: combined Figures 1 to 3 This embodiment describes a six-sulfur circuit breaker stroke overtravel measurement and slow split prevention device, which is a further limitation of the measurement device described in specific implementation method one. The other end of the upper surface of the fixed clamp 6 is processed with a U-shaped through hole.

[0023] Specific implementation method three: combinedFigures 1 to 3 The embodiment is a further limitation of the measuring device described in embodiment two. The embodiment describes a sulfur hexafluoride circuit breaker stroke overstroke measurement and slow breaking prevention device. The bottom surface of one end of the fixed clamp 6 is provided with a base 7.

[0024] Embodiment four: combination Figures 1 to 3 The embodiment is a further limitation of the measuring device described in embodiment three. The embodiment describes a sulfur hexafluoride circuit breaker stroke overstroke measurement and slow breaking prevention device. The axis of the fixed clamp 6 is perpendicular to the axis of the base 7.

[0025] Embodiment five: combination Figures 1 to 3 The embodiment is a further limitation of the measuring device described in embodiment one. The embodiment describes a sulfur hexafluoride circuit breaker stroke overstroke measurement and slow breaking prevention device. The support rod 2 and the support tube 4 are slidingly connected.

[0026] Embodiment six: combination Figures 1 to 3 The embodiment is a further limitation of the measuring device described in embodiment one. The embodiment describes a sulfur hexafluoride circuit breaker stroke overstroke measurement and slow breaking prevention device. The top of the support rod 2 is welded and fixed to the middle of the outer surface of the bracket 1.

[0027] Working principle

[0028] In use, the device is placed at the lower part of the sulfur hexafluoride circuit breaker. According to the distance between the moving contact arm of the sulfur hexafluoride switch mechanism and the ground, the relative height of the support rod 2 relative to the support tube 4 is adjusted by the nut 3. After adjustment, the nut 3 is locked, so that the bracket 1 lifts the moving contact arm of the sulfur hexafluoride switch mechanism, making it move up and down, achieving stroke and overstroke measurement. The direction of the bracket 1 can be adjusted by adjusting the bearing 5 of the support tube 4. Whether the moving and stationary contacts are in the closing or opening position, the measurement stroke and overstroke can be adjusted by adjusting the height of the support tube 4. This device mainly uses bearing to convert the relationship between moving and stationary, uses the bracket 1 to drive the arm, uses the arm to drive the vertical pull rod to conduct the vertical movement of the conductive rod, so as to test the stroke, overstroke and synchronization.

Claims

1. A SF6 circuit breaker over-travel measurement and slow break prevention device, characterized by: It include bracket (1), support rod (2), nut (3), support tube (4), bearing (5) and fixed fixture (6); The upper surface of the fixed fixture (6) is provided with a bearing (5) at one end, and the outer ring of the bearing (5) is fixedly connected with the upper surface of the fixed fixture (6). The bottom end of the support tube (4) is inserted into the inner ring inside the bearing (5), and the bottom outer surface of the support tube (4) is fixedly connected with the inner wall of the inner ring of the bearing (5). A plurality of strip-shaped through holes are uniformly processed on the outer surface top of the support tube (4) in the circumferential direction. A threaded section is processed on the outer surface top of the support tube (4), and the threaded section is provided with a nut (3). The bottom end of the support rod (2) is inserted into the inside of the support tube (4), and the top end of the support rod (2) is provided with a bracket (1). The nut (3) is used to lock the support rod (2) and the support tube (4).

2. The over-travel measuring and anti-slow breaking device for SF6 circuit breaker according to claim 1, characterized in that: The other end of the upper surface of the fixed fixture (6) is processed with a U-shaped through hole.

3. The over-travel measuring and anti-slow breaking device for SF6 circuit breaker according to claim 2, characterized in that: The lower surface of one end of the fixed fixture (6) is provided with a base (7).

4. The over-travel measuring and anti-slow breaking device for SF6 circuit breaker according to claim 3, characterized in that: The axis of the fixed fixture (6) is perpendicular to the axis of the base (7).

5. The SF6 circuit breaker stroke over-travel measuring and anti-slow- breaking device of claim 1, wherein: The support rod (2) and the support tube (4) are slidingly connected.

6. A SF6 circuit breaker stroke over-travel measuring and anti-slow- breaking device according to claim 1, characterized in that: The top of the support rod (2) is welded and fixed with the outer surface middle part of the bracket (1).

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