Snap spring detection device and detection method for high-voltage circuit breaker

Abstract

The invention relates to the technical field of electric power facilities, in particular to a snap spring detection device for a high-voltage circuit breaker and a detection method.The snap spring detection device comprises a tool, a metal sensor and a detection part, the tool is provided with a first end and a second end, the first end is provided with a first limiting groove, and the metal sensor is arranged on the tool and close to the first limiting groove; the detection part is movably arranged on the tool, a detection groove and a second limiting groove are formed in the detection part, the detection groove is movably connected with the first limiting groove, and the second limiting groove is located in the side, away from the first limiting groove, of the detection groove; by arranging the metal sensor, the detection part, the first limiting groove and the second limiting groove on the tool, the snap spring can be clamped into the detection groove and sensed by the metal sensor in the assembling process, and if the metal sensor does not sense the snap spring, the condition that the snap spring is in a leakage shape or the snap spring is not installed in place exists is indicated; therefore, negative effects on the quality and the stability of the high-voltage circuit breaker due to neglected installation or improper installation of the snap spring are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power facilities, and in particular to a detection device and a detection method for a clip spring for a high-voltage circuit breaker. Background Art

[0002] High-voltage circuit breakers, also known as high-voltage switches, are the main control equipment in 1000kv high-voltage circuits, such as power plants, substations, etc. High-voltage circuit breakers have arc extinguishing characteristics. When the power system is operating normally, high-voltage circuit breakers can cut off and connect the no-load and load currents of high-voltage lines and various electrical equipment; when a fault occurs in the power system, high-voltage circuit breakers can cooperate with relay protection to quickly cut off the fault current circuit.

[0003] During the assembly process of high-voltage circuit breakers, it is necessary to install retaining rings on the mechanism pins in the high-voltage circuit breakers to prevent axial movement of components and reduce damage and failures caused by axial displacement of components. However, in the actual assembly process, due to the complicated assembly process and the small size of retaining rings, retaining rings are often missed or improperly installed, which can easily have a negative impact on the quality and stability of the high-voltage circuit breaker.

[0004] It should be noted that the information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes prior art already known to a person skilled in the art. Summary of the invention

[0005] In order to solve the technical problems of missing or improper installation of the retaining spring mentioned above, the present invention provides a retaining spring detection device for a high-voltage circuit breaker, the retaining spring detection device for a high-voltage circuit breaker comprising a tooling, a metal sensor and a detection part, the tooling having a first end and a second end, the first end being provided with a first limit groove, the metal sensor being arranged on the tooling and close to the first limit groove, the detection part being movably arranged on the tooling, the detection part being provided with a detection groove and a second limit groove, the detection groove being movably connected to the first limit groove, and the second limit groove being located on a side of the detection groove away from the first limit groove.

[0006] Among them, the diameter of the detection slot Greater than the diameter of the second limiting groove .

[0007] Furthermore, the diameter of the detection slot Greater than the diameter of the first limiting groove .

[0008] Furthermore, the diameter of the second limiting groove is Not less than the diameter of the first limiting groove .

[0009] Furthermore, the first end and the second end are not on the same straight line.

[0010] Furthermore, the retaining spring detection device for high-voltage circuit breaker also includes a fixing part, the fixing part is detachably connected to the tooling, and the fixing part is movably connected to the metal sensor.

[0011] Furthermore, the tooling, the detection part and the fixing part are all made of non-metallic materials.

[0012] Furthermore, the retaining spring detection device for high-voltage circuit breaker also includes a positioning portion, and the positioning portion is fixed on the tooling.

[0013] Furthermore, the retaining spring detection device for high-voltage circuit breaker also includes a holding portion, which is fixed on the tooling and close to the second end.

[0014] Furthermore, the metal sensor is a shielding type sensor.

[0015] Furthermore, the present invention also provides a method for detecting a high-voltage circuit breaker retaining spring, which uses any one of the above-mentioned retaining spring detection devices for high-voltage circuit breakers for detection.

[0016] Based on the above, the present invention provides a high-voltage circuit breaker retaining spring detection device and detection method, compared with the prior art, by arranging a metal sensor, a detection part, a first limit groove and a second limit groove on the tooling, during the assembly process, by extending the tooling into the transformer and engaging with the mechanism pin shaft, when the mechanism pin shaft and the first limit groove are engaged in place, the retaining spring can be engaged into the detection groove and sensed by the metal sensor. If the metal sensor does not sense it, it indicates that there is a retaining spring leakage or the retaining spring is not installed in place, thereby avoiding the negative impact on the quality and stability of the high-voltage circuit breaker due to the retaining spring leakage or inadequate installation, and at the same time can also improve the overall assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. The positional relationship described in the drawings in the following description is based on the direction of the components in the drawings unless otherwise specified.

[0018] Figure 1 A schematic structural diagram of a snap spring detection device for a high-voltage circuit breaker provided in one embodiment of the present invention; Figure 2 , Figure 3 A schematic diagram of the explosion structure of a snap spring detection device for a high-voltage circuit breaker provided in one embodiment of the present invention; Figure 4 A schematic diagram of the structure of a detection unit provided by an embodiment of the present invention; Figure 5 for Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle; Figure 6 A diagram showing the use status of a clamp spring detection device for a high-voltage circuit breaker provided in one embodiment of the present invention; Figure 7 for Figure 6 Schematic diagram of the local enlarged structure at N in the figure.

[0019] Reference numerals: DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance, or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variation thereof all mean "at least including".

[0022] See also Figure 1 to Figure 3 , Figure 1 A schematic structural diagram of a snap spring detection device for a high-voltage circuit breaker provided in one embodiment of the present invention; Figure 2 , Figure 3A schematic diagram of the explosion structure of a retaining spring detection device for a high-voltage circuit breaker provided in one embodiment of the present invention.

[0023] In order to solve the above-mentioned technical problems of missing or improper installation of the retaining spring, or to achieve at least one of the above-mentioned advantages or other advantages, an embodiment of the present invention provides a retaining spring detection device 100 for a high-voltage circuit breaker.

[0024] As shown in the figure, the clamp spring detection device 100 for high-voltage circuit breaker includes a tool 10, a metal sensor 20 and a detection unit 30. In specific implementation, the tool 10 has a first end 11 and a second end 12. In the actual assembly process, the clamp spring 200 is usually clamped to one end of the mechanism pin 300 in the high-voltage circuit breaker. Therefore, it is necessary to open a first limiting groove 40 on the first end 11 for clamping the mechanism pin 300, and the first limiting groove 40 can play an auxiliary positioning role: when the mechanism pin 300 is clamped in the first limiting groove 40, the metal sensor 20 can accurately sense the clamp spring 200.

[0025] Preferably, the first end 11 and the second end 12 are not on the same straight line. That is, the tool 10 is a broken line shape with a bend as a whole, which is convenient for workers to use the high-voltage circuit breaker clip spring detection device 100 to detect the clip spring 200 during the assembly process. It is understandable that the bending angle of the tool 10 can be adjusted according to the actual assembled product, and this case is not limited to this.

[0026] Furthermore, the tooling 10 is made of non-metallic material to avoid interference with the metal sensor 20 .

[0027] The metal sensor 20 is arranged on the tooling 10 and is close to the first limit groove 40. In specific implementation, a wiring groove 50 is provided on the tooling 10. When the metal sensor 20 is installed on the tooling 10, the power supply and signal lines are led out of the tooling 10 through the wiring groove 50. Preferably, the metal sensor 20 is a shielded sensor.

[0028] When the mechanism pin 300 is clamped in the first limiting groove 40, the metal sensor 20 can accurately sense the clip 200. If the clip 200 is not detected, it means that the clip 200 is missing or not installed properly, reminding the workers to check in time, so as to avoid the negative impact on the quality and stability of the high-voltage circuit breaker due to the missing or inadequate installation of the clip 200, and also improve the overall assembly efficiency.

[0029] On the basis of the above, a detection part 30 is provided on the first end 11 of the tool 10. In specific implementation, during the actual assembly process, with the continuous use of the clamp spring detection device 100 for high-voltage circuit breakers, the detection part 30 may be worn, so the detection part 30 and the tool 10 are detachably connected, which is convenient for replacing the detection part 30 after wear occurs, avoiding detection errors caused by wear.

[0030] The detection part 30 is provided with a detection groove 31 and a second limiting groove 32. When the detection part 30 is mounted on the tooling 10, the detection groove 31 fits with the first limiting groove 40. The second limiting groove 32 is located on the side of the detection groove 31 away from the first limiting groove 40. Preferably, the detection part 30 is made of metal to reduce the wear of the detection part 30 and improve the durability of the detection part 30.

[0031] Specifically, when the mechanism pin 300 is clamped in the first limiting groove 40, the spring clip 200 is just clamped in the detection groove 60, and the second limiting groove 32 can limit the spring clip 200, so that the spring clip 200 can be accurately clamped into the detection groove 60, and the metal sensor 20 can accurately sense the spring clip 200. If the spring clip 200 is not detected, it means that the spring clip 200 is missing or not installed properly, reminding the workers to check in time, so as to avoid the negative impact on the quality and stability of the high-voltage circuit breaker due to the missing or improper installation of the spring clip, and at the same time, it can also improve the overall assembly efficiency.

[0032] Preferably, if Figure 4 , Figure 5 As shown, the diameter of the detection slot 31 Greater than the diameter of the second limiting groove 32 The diameter of the detection slot 31 Greater than the diameter of the first limiting groove 40 The diameter of the second limiting groove 32 is Not less than the diameter of the first limiting groove 40 Therefore, during the monitoring process, the first limiting groove 40 and the second limiting groove 32 can limit the clamping spring 200 .

[0033] In some preferred embodiments, the clamp spring detection device for high-voltage circuit breakers further includes a fixing portion 60. The fixing portion 60 is movably connected to the metal sensor 20. The fixing portion 60 is detachably connected to the tooling 10, which is convenient for installing and replacing the metal sensor 20. Furthermore, the fixing portion 60 is made of non-metallic material to avoid interference with the metal sensor 20.

[0034] In some preferred embodiments, the clamp spring detection device for high-voltage circuit breakers further includes a positioning portion 70. The positioning portion 70 is fixed on the tooling 10. The positioning portion 70 can play an anti-cheating effect. Figure 6 , Figure 7 As shown, the positioning part 70 is a proximity sensor. Only when the worker places the accurate positioning part 70 on the mechanism top plate 400 in the high-voltage circuit breaker, the metal sensor 20 can sense the clip 200, avoiding cheating by placing the clip 200 in the detection slot 31 artificially.

[0035] In some preferred embodiments, the clamp spring detection device for high-voltage circuit breakers further includes a gripping portion 80. The gripping portion 80 is fixed on the tool 10 and is close to the second end 12, so as to facilitate the worker to grip it.

[0036] In some preferred embodiments, the present invention further provides a method for detecting a high-voltage circuit breaker snap spring, which uses the above-mentioned high-voltage circuit breaker snap spring detection device 100 for detection. In specific implementation, the detection method includes the following steps: The first end 11 of the tool 10 is extended into the high-voltage circuit breaker, and the positioning portion 70 is in contact with the mechanism top plate 400. At this time, the first limit groove 40 is engaged with the mechanism pin 300, and the retaining spring 200 is engaged with the detection groove 31. The metal sensor 20 can sense the retaining spring 200. If the retaining spring 200 is not detected, it means that the retaining spring 200 is missing or not installed properly, reminding the workers to check in time, so as to avoid the negative impact on the quality and stability of the high-voltage circuit breaker due to the missing or improper installation of the retaining spring, and at the same time, it can also improve the overall assembly efficiency.

[0037] To sum up, compared with the prior art, the retaining spring detection device and detection method for high-voltage circuit breakers provided by the present invention, by arranging a metal sensor, a detection groove, a first limit groove and a second limit groove on the tooling, during the assembly process, by extending the tooling into the transformer and engaging with the mechanism pin shaft, when the mechanism pin shaft and the first limit groove are engaged in place, the retaining spring can be engaged into the detection groove and sensed by the metal sensor. If the metal sensor does not sense it, it indicates that there is a retaining spring leakage or the retaining spring is not installed in place, thereby avoiding the negative impact on the quality and stability of the high-voltage circuit breaker due to the missing or improper installation of the retaining spring, and also can improve the overall assembly efficiency.

[0038] Although the terminology such as tooling and detection unit is used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

[0039] In addition, those skilled in the art should understand that, although there are many problems in the prior art, each embodiment or technical solution of the present invention can be improved in only one or several aspects, without having to solve all the technical problems listed in the prior art or background technology at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be used as a limitation on the claim.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spring detection device for a high voltage circuit breaker, characterized in that: include A tooling, the tooling having a first end and a second end, the first end being provided with a first limiting groove; A metal sensor, the metal sensor is arranged on the tooling and close to the first limiting groove; A detection part, the detection part is movably arranged on the tooling, the detection part is provided with a detection slot and a second limit slot, the detection slot is movably connected to the first limit slot, and the second limit slot is located at a side of the detection slot away from the first limit slot; Wherein, the diameter of the detection slot is Greater than the diameter of the second limiting groove .

2. The clamp spring detection device for high voltage circuit breaker according to claim 1, characterized in that: The diameter of the detection slot Greater than the diameter of the first limiting groove .

3. The clamp spring detection device for high voltage circuit breaker according to claim 1, characterized in that: The diameter of the second limiting groove Not less than the diameter of the first limiting groove .

4. The clamp spring detection device for high voltage circuit breaker according to claim 1, characterized in that: The first end and the second end are not on the same straight line.

5. The clamp spring detection device for high voltage circuit breaker according to claim 1, characterized in that: The clamp spring detection device for high-voltage circuit breaker also includes a fixing part, which is detachably connected to the tooling and movably connected to the metal sensor.

6. The clamp spring detection device for high voltage circuit breaker according to claim 5, characterized in that: The tooling and the fixing part are both made of non-metallic materials.

7. The clamp spring detection device for high voltage circuit breaker according to claim 1, characterized in that: The clamp spring detection device for high-voltage circuit breaker further comprises a positioning portion, and the positioning portion is fixed on the tooling.

8. The clamp spring detection device for high voltage circuit breaker according to claim 1, characterized in that: The clamp spring detection device for high-voltage circuit breaker further comprises a holding portion, which is fixed on the tooling and close to the second end.

9. The clamp spring detection device for high voltage circuit breaker according to claim 1, characterized in that: The metal sensor is a shielding type sensor.

10. A method for detecting a high voltage circuit breaker retaining spring, characterized in that: The detection is performed using the high-voltage circuit breaker retaining spring detection device as described in any one of claims 1 to 9.

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