Breaker arc extinguish chamber fracture size detection device

Abstract

The utility model discloses a breaker arc extinguish chamber fracture size detection device, belonging to the breaker arc extinguish chamber field, a transmission assembly of the device connects a first flange and a second flange through a screw rod, the first flange is connected with a fixed support of an arc extinguish chamber, a screw rod is inserted in a thread structure of the second flange, and the dimension of the fracture of the arc extinguish chamber is detected by rotating the screw rod. The main pull rod can be driven to do linear motion so as to realize the opening and closing actions of the moving contact and the static contact; an indication loop is arranged at each fracture of the displacement monitoring assembly, a moving contact and a static contact serve as switches of the indication loops, the indication loops are connected with indication lamps, and a displacement sensor is arranged on the transmission crank arm; when the rigid closing size is detected, the main pull rod is driven to move through the transmission assembly, and when the main pull rod moves to the indicating lamp in the indicating loop corresponding to a certain fracture and is turned on, the displacement value of the displacement sensor is recorded, namely the rigid closing size corresponding to the fracture. The device is simple in structure and principle, convenient to operate and capable of accurately measuring the rigid convergence size.

Description

Technical Field

[0001] The utility model belongs to the field of circuit breaker arc extinguishing chambers, and in particular relates to a device for detecting the fracture size of a circuit breaker arc extinguishing chamber. Background Art

[0002] Circuit breakers are important equipment in high-voltage switches. In order to improve the assembly quality and operational reliability of circuit breakers, it is necessary to ensure that the size of the circuit breaker arc chamber is within a controllable range.

[0003] like Figure 1 As shown, Figure 1 The figure shows a four-break arc extinguishing chamber. Currently, when assembling a multi-break (two breaks or more) arc extinguishing chamber, only the size of the components and the assembly accuracy are relied upon to meet the rigid-closed size requirements. However, the actual rigid-closed size is in a blind box state, which is not conducive to the control of the assembly process and the retention of key data, and thus it is impossible to achieve the synchronous state of opening and closing of multiple breaks.

[0004] It can be seen that the existing detection measures cannot effectively and accurately measure the rigid closing dimensions of multi-break arc extinguishing chambers. Utility Model Content

[0005] In order to overcome the above technical defects, the utility model provides a device for detecting the fracture size of an arc extinguishing chamber of a circuit breaker, which can solve the technical problem that existing detection measures cannot effectively and accurately measure the rigid closing size of arc extinguishing chambers with multiple fractures.

[0006] In order to achieve the above purpose, the utility model adopts the following technical contents:

[0007] A device for detecting the size of a circuit breaker arc extinguishing chamber fracture, comprising a transmission component and a displacement monitoring component;

[0008] The transmission assembly includes a lead screw, a first flange, a second flange, and a screw;

[0009] The first flange is fixed on a fixed support of the arc extinguishing chamber;

[0010] The first flange is connected to the second flange via the screw;

[0011] The lead screw is inserted into the second flange and is threadably matched with the second flange;

[0012] The lead screw is connected to the main pull rod of the arc extinguishing chamber, can cooperate with the second flange, and drive the main pull rod to perform linear motion by rotating;

[0013] The displacement monitoring assembly includes an indicator circuit, each of which corresponds to each fracture of the arc extinguishing chamber, and the moving contact and the static contact located at both ends of the fracture serve as switches of the indicator circuit;

[0014] The indicating circuit is connected with an indicating lamp, and the transmission crank arm of the arc extinguishing chamber is provided with a displacement sensor.

[0015] Furthermore, a fastening nut is provided on the screw rod for fastening the first flange and the second flange.

[0016] Furthermore, one end of the lead screw is connected to a handle, and the other end is connected to the main pull rod.

[0017] Furthermore, the other end of the lead screw is connected to a cover plate and a joint in sequence; the lead screw is connected to the main pull rod through the joint.

[0018] Furthermore, the axes of the lead screw and the main pull rod are located on the same straight line.

[0019] Furthermore, one end of the indicating circuit is connected to a metal part of a moving contact of the arc extinguishing chamber, and the other end is connected to a metal part of a stationary contact of the arc extinguishing chamber.

[0020] Furthermore, a displacement sensor is respectively arranged on each transmission arm of the arc extinguishing chamber.

[0021] Furthermore, a displacement sensor is provided on any transmission arm of the arc extinguishing chamber.

[0022] Furthermore, each of the indication loops is connected in parallel.

[0023] Furthermore, an indicator light is provided on the main circuit in parallel with each of the indicating circuits.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] The utility model provides a device for detecting the size of a circuit breaker arc extinguishing chamber fracture. The device comprises a transmission component and a displacement monitoring component. The transmission component connects a first flange and a second flange through a screw rod. The first flange is connected to a fixed support of the arc extinguishing chamber. A lead screw is inserted in a threaded structure of the second flange. By rotating the lead screw, a main pull rod can be driven to perform linear motion to realize the separation and closing action of a moving contact and a static contact. The displacement monitoring component sets an indication circuit at each fracture. The moving contact and the static contact serve as switches of the indication circuit. An indicator light is connected to the indication circuit, and a displacement sensor is set on a transmission crank arm. When the just-closed size detection is performed, the main pull rod is driven to move through the transmission component. When the indicator light in the indication circuit corresponding to a certain fracture is lit, the displacement value of the displacement sensor is recorded, which is the just-closed size corresponding to the fracture. The structure and principle of the device are simple, the operation is convenient, the just-closed size can be accurately measured, and the device has good popularization and application value.

[0026] Preferably, in the utility model, one end of the lead screw is connected to a handle to facilitate the rotation of the lead screw, thereby improving the operability of the device.

[0027] Further preferably, in the present invention, the other end of the lead screw is connected to the cover plate and the joint in sequence, and is connected to the main pull rod through the joint, thereby ensuring the transmission reliability of the device.

[0028] Preferably, in the present invention, the axes of the lead screw and the main pull rod are located on the same straight line, which further improves the transmission reliability.

[0029] Preferably, in the utility model, a displacement sensor is respectively provided on each transmission arm of the arc extinguishing chamber, and the displacement value is conveniently read and recorded by a displacement sensor dedicated to each fracture.

[0030] Preferably, in the utility model, a displacement sensor is provided on any transmission crank arm of the arc extinguishing chamber, and the entire device includes only one displacement sensor. Since each transmission crank arm is linked, if there is only one displacement sensor, the displacement readings of other positions can be completed in the form of multiple readings, thereby simplifying the device structure and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the breaks of a four-break arc extinguishing chamber provided in an embodiment of the utility model;

[0032] Figure 2 A schematic diagram of the structure of a four-break arc extinguishing chamber provided in an embodiment of the utility model;

[0033] Figure 3 A schematic diagram of a transmission assembly of a circuit breaker arc extinguishing chamber fracture size detection device provided by an embodiment of the utility model;

[0034] Figure 4 A schematic diagram of a displacement monitoring component of a circuit breaker arc extinguishing chamber fracture size detection device provided by an embodiment of the utility model;

[0035] Figure 5 A circuit schematic diagram of a displacement monitoring component of a circuit breaker arc chamber fracture size detection device provided in an embodiment of the utility model;

[0036] Figure 6 A working principle diagram of a transmission assembly of a circuit breaker arc extinguishing chamber fracture size detection device provided in an embodiment of the utility model.

[0037] Reference numerals:

[0038] 1. Handle; 2. Screw; 3. Second flange; 4. Joint; 5. First flange; 6. Fastening nut; 7. Screw; 8. Cover plate;

[0039] 10. First indicator light; 11. Second indicator light; 12. Third indicator light; 13. Fourth indicator light; 14. First displacement sensor; 15. Second displacement sensor; 16. Third displacement sensor; 17. Fourth displacement sensor;

[0040] 101, first fracture; 102, second fracture; 103, third fracture; 104, fourth fracture;

[0041] 20. Fixed support; 21. Main tie rod;

[0042] 301, first moving contact; 302, second moving contact; 303, third moving contact; 304, fourth moving contact; 305, first stationary contact; 306, second stationary contact; 307, third stationary contact; 308, fourth stationary contact; 310, first transmission crank arm; 311, second transmission crank arm; 312, third transmission crank arm; 313, fourth transmission crank arm; 314, first transmission auxiliary pull rod; 315, second transmission auxiliary pull rod; 316, third transmission auxiliary pull rod. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the following specific embodiments further describe the utility model in detail. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does 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 utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0048] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0049] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0050] The utility model is further described in detail below with reference to the accompanying drawings:

[0051] Example

[0052] In order to better understand the content of the solution of the utility model, in this embodiment, the relevant professional terms are explained as follows:

[0053] High-voltage switchgear: a switchgear mainly used in power generation, transmission, distribution and conversion, and its combination with control, measurement, protection and regulation equipment, used to close or open one or more circuits.

[0054] Arc extinguishing chamber: A device used to limit the spatial position of the arc and accelerate the extinction of the arc. It is an important component of the circuit breaker.

[0055] like Figure 2 As shown, Figure 2It is a structural schematic diagram of a four-break arc extinguishing chamber, including a first moving contact 301, a second moving contact 302, a third moving contact 303, a fourth moving contact 304, a first static contact 305, a second static contact 306, a third static contact 307, a fourth static contact 308, a first transmission crank arm 310, a second transmission crank arm 311, a third transmission crank arm 312, a fourth transmission crank arm 313, a first transmission auxiliary pull rod 314, a second transmission auxiliary pull rod 315 and a third transmission auxiliary pull rod 316.

[0056] The fixed support 20 is the supporting structure of the arc extinguishing chamber, and the main pull rod 21 is the main transmission structure of the arc extinguishing chamber, which is respectively connected with four transmission crank arms to achieve linkage.

[0057] The first moving contact 301 is connected to the first transmission crank arm 310, the second moving contact 302 is connected to the second transmission crank arm 311, the third moving contact 303 is connected to the third transmission crank arm 312, and the fourth moving contact 304 is connected to the fourth transmission crank arm 313; the main pull rod 21 drives the first transmission crank arm 310 to make a linear motion, and then drives the second transmission crank arm 311 through the first transmission auxiliary pull rod 314, the second transmission auxiliary pull rod 315 drives the third transmission crank arm 312, and the third transmission auxiliary pull rod 316 drives the fourth transmission crank arm 313, so that the moving contacts of the four arc extinguishing chambers all move toward the static contacts of the arc extinguishing chamber, thereby realizing the disconnection or closing of the entire circuit breaker equipment body.

[0058] The first moving contact 301 and the first static contact 305 just touch to achieve electrical conduction, which is regarded as the just-closed state of the first break 101. Similarly, the second moving contact 302 and the second static contact 306, the third moving contact 303 and the third static contact 307, and the fourth moving contact 304 and the fourth static contact 308 just touch are regarded as the just-closed state of the second break 102, the third break 103 and the fourth break 104, respectively.

[0059] In combination with the background technology, when assembling a multi-break (two or more break) arc extinguishing chamber, Figure 1 As shown, the arc extinguishing chamber includes four breaks, namely the first break 101, the second break 102, the third break 103 and the fourth break 104; in the current detection measures, only the component size and assembly accuracy are relied upon to meet the rigid-closed size requirements, but the actual rigid-closed size is in a blind box state, which is not conducive to the control of the assembly process and the retention of key data, and thus it is impossible to achieve the synchronous opening and closing of multiple breaks.

[0060] In order to solve the above problems, this embodiment provides a device for detecting the fracture size of the arc extinguishing chamber of a circuit breaker. This device is used to solve the problem of detecting the size of the arc extinguishing chambers of circuit breakers with multiple fractures during the assembly process, and then the size is controlled during assembly to improve the synchronicity of opening and closing between each fracture. This device has a simple structure and is easy to operate. It can be adapted to arc extinguishing chambers with multiple fractures such as three fractures or four fractures, thereby improving the assembly accuracy.

[0061] like Figure 3 and Figure 4 As shown, this embodiment provides a device for detecting the size of a circuit breaker arc extinguishing chamber, including a transmission component and a displacement monitoring component;

[0062] In this embodiment, the transmission assembly includes a handle 1 , a lead screw 2 , a second flange 3 , a joint 4 , a first flange 5 , a fastening nut 6 , a screw 7 and a cover plate 8 .

[0063] The handle 1 is fixed on the screw 2, the other end of the screw 2 is a plane, the first flange 5 is connected and fixed to the fixed support 20 of the arc extinguishing chamber, the second flange 3 is connected and fixed to the first flange 5 through the screw 7 and the fastening nut 6, and the center of the second flange 3 is an internal thread structure matching the external thread of the screw 2.

[0064] like Figure 6 As shown, this embodiment provides a device for detecting the size of the arc extinguishing chamber of a circuit breaker, and its working principle is as follows: the handle 1 drives the screw 2 to rotate at the center of the second flange 3. Since the second flange 3 is fixed, the screw 2 also makes a linear motion while rotating, thereby driving the joint 4 to make a linear motion. The cover plate 8 limits one flat end of the screw 2 within the structural range of the first flange 5 to ensure that the joint 4 and the screw 2 are not loose during the linear motion. The other end of the joint 4 is fixed to the main pull rod 21 of the arc extinguishing chamber. Finally, the rotation of the handle 1 drives the main pull rod 21 of the arc extinguishing chamber to move linearly, thereby realizing the opening and closing of the arc extinguishing chamber. When the indicator light corresponding to a certain fracture lights up, it means that the fracture is in a just-closed state. At this time, the displacement value of the displacement sensor corresponding to the fracture is recorded, and the other fracture size detection process is similar to realize the detection of the fracture size of the circuit breaker arc extinguishing chamber.

[0065] In this embodiment, in order to improve transmission reliability, the axes of the lead screw 2 and the main pull rod 21 are located on the same straight line.

[0066] like Figure 5As shown, in this embodiment, the displacement monitoring component is realized by a first displacement sensor 14, a second displacement sensor 15, a third displacement sensor 16, and a fourth displacement sensor 17 installed on each transmission crank arm. Here, the displacement sensor is preferably a BL-HL25 model; one end of a single indication circuit among the four indication circuits is connected to a metal part connected to a moving contact, and the other end is connected to a metal part connected to a stationary contact, and a first indicator light 10, a second indicator light 11, a third indicator light 12, and a fourth indicator light 13 are connected in the circuit.

[0067] This detection device is usually installed in the open state. During the closing operation of the device, the corresponding indicator light of one of the four breaks lights up, indicating that the break is in the just-closed state. At this time, the displacement value of the displacement sensor corresponding to the break is recorded, that is, the just-closed size of the break. Continue to close the circuit until all indicator lights are on. During this period, the displacement value of the corresponding displacement sensor is recorded when each light is on, and the just-closed sizes of the remaining breaks are obtained.

[0068] In this embodiment, in order to simplify the device structure and save costs, a displacement sensor can be set on any transmission arm of the arc extinguishing chamber. The entire device only includes one displacement sensor. Since each transmission arm is linked, if there is only one displacement sensor, the displacement readings of other positions can be completed in the form of multiple readings.

[0069] The present embodiment provides a device for detecting the fracture dimensions of an arc extinguishing chamber of a circuit breaker. The key points are: first, the structure is simple and easy to install; second, the displacement dimension measurement of the components enclosed inside is realized; third, it is suitable for the separation and combination and dimension measurement of two-fracture, three-fracture and four-fracture arc extinguishing chambers of the same structure.

[0070] The utility model provides a circuit breaker arc chamber fracture size detection device, which has the following advantages compared with existing detection measures:

[0071] First, the utility model can accurately and flexibly control the opening and closing actions of the arc extinguishing chamber during the implementation process.

[0072] Second, the utility model has a simple and reliable structure and is easy to install and operate.

[0073] Third, the utility model has low structural cost and high economy.

[0074] Fourthly, the utility model can realize the displacement dimension measurement of the parts enclosed inside, which is beneficial to the control of the assembly process and the retention of key data.

[0075] The above embodiment is only one of the implementation methods that can realize the technical solution of the utility model. The scope of protection required by the utility model is not limited only to this embodiment, but also includes within the technical scope disclosed by the utility model, any changes, replacements and other implementation methods that can be easily thought of by any technician familiar with the technical field.

Claims

1. A device for detecting the size of the interrupter of a circuit breaker, characterized in that: Including transmission components and displacement monitoring components; The transmission assembly comprises a lead screw (2), a first flange (5), a second flange (3), and a screw (7); The first flange (5) is fixed on a fixed support (20) of the arc extinguishing chamber; The first flange (5) is connected to the second flange (3) via the screw (7); The lead screw (2) is inserted into the second flange (3) and threadably engaged with the second flange (3); The lead screw (2) is connected to the main pull rod (21) of the arc extinguishing chamber, can cooperate with the second flange (3), and drive the main pull rod (21) to perform linear motion by rotating; The displacement monitoring assembly includes an indicator circuit, each of which corresponds to each fracture of the arc extinguishing chamber, and the moving contact and the static contact located at both ends of the fracture serve as switches of the indicator circuit; The indicating circuit is connected with an indicating lamp, and the transmission crank arm of the arc extinguishing chamber is provided with a displacement sensor.

2. A circuit breaker arc extinguishing chamber fracture size detection device according to claim 1, characterized in that: The screw rod (7) is provided with a fastening nut (6) for fastening the first flange (5) and the second flange (3).

3. A circuit breaker arc extinguishing chamber fracture size detection device according to claim 1, characterized in that: One end of the lead screw (2) is connected to a handle (1), and the other end is connected to the main pull rod (21).

4. A circuit breaker arc extinguishing chamber fracture size detection device according to claim 3, characterized in that: The other end of the lead screw (2) is connected to the cover plate (8) and the joint (4) in sequence; the lead screw (2) is connected to the main pull rod (21) via the joint (4).

5. The device for detecting the size of the interrupter of a circuit breaker according to claim 1, characterized in that: The axes of the lead screw (2) and the main pull rod (21) are located on the same straight line.

6. A circuit breaker arc extinguishing chamber fracture size detection device according to claim 1, characterized in that: One end of the indicating circuit is connected to the metal part of the moving contact of the arc extinguishing chamber, and the other end is connected to the metal part of the stationary contact of the arc extinguishing chamber.

7. A circuit breaker arc extinguishing chamber fracture size detection device according to claim 1, characterized in that: A displacement sensor is respectively arranged on each transmission crank arm of the arc extinguishing chamber.

8. A circuit breaker arc extinguishing chamber fracture size detection device according to claim 1, characterized in that: A displacement sensor is arranged on any transmission crank arm of the arc extinguishing chamber.

9. A circuit breaker arc extinguishing chamber fracture size detection device according to claim 1, characterized in that: Each of the indicating loops is connected in parallel.

10. A circuit breaker arc extinguishing chamber fracture size detection device according to claim 1, characterized in that: An indicator light is arranged on the main circuit in which each of the indicating circuits is connected in parallel.

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