Ultra-small environment-friendly gas inflation cabinet circuit breaker

Abstract

The invention relates to a circuit breaker of an ultra-small environment-friendly gas inflation cabinet. The circuit breaker comprises a spring operating mechanism, a pole and an anti-vibration mechanism. The pole is connected with the spring operating mechanism, and the pole is transversely arranged; the anti-vibration mechanism is connected with the spring operating mechanism, and the anti-vibration mechanism comprises a counterweight disc, a first elastic piece and a second elastic piece. The first elastic pieces are arranged on the two end faces of the balance weight disc. At least two second elastic pieces are arranged around the counterweight disc; wherein the pole is connected with the lower part of the spring operating mechanism; the counterweight disc is parallel to the mounting plane of the counterweight disc on the spring operating mechanism; and the telescopic directions of the first elastic piece and the second elastic piece are vertical to the mounting plane of the first elastic piece and the second elastic piece on the spring operating mechanism. According to the utility model, the pole is transversely arranged at the lower part, the appearance of the circuit breaker is changed into an L shape, the rear part of the original circuit breaker is vacated, and an isolation mechanism part in the gas-insulated switchgear can be arranged at the position, so that the height size of the gas-insulated switchgear is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, and in particular to an extra-small environmentally friendly gas-filled cabinet circuit breaker. Background Art

[0002] With the development of science and technology and the popularization of electricity use, electricity safety and green energy are becoming more and more important in today's society. The old inflatable cabinets originally used in public facilities or in harsh environments can no longer meet the requirements of modern society.

[0003] On the basis of the original equipment, upgrading and renovating the old gas filling cabinets can optimize the existing power system at a relatively low cost. The renovation of the gas filling cabinets includes the installation of additional equipment such as intelligent monitoring and shell protection to improve its modernization level and safety performance. However, in the original power system, the installation layout is planned according to the original equipment volume, and there is no space for the installation of additional equipment, which affects the progress of the upgrading and renovation of the old gas filling cabinets.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide an extra-small environmentally friendly gas-filled cabinet circuit breaker to make the structure of the gas-filled cabinet more compact.

[0006] The technical solution of the present invention is as follows:

[0007] An extra-small environmentally friendly gas-filled cabinet circuit breaker is characterized in that the circuit breaker comprises: a spring operating mechanism; a pole connected to the spring operating mechanism, the pole being arranged horizontally; an anti-vibration mechanism connected to the spring operating mechanism, the anti-vibration mechanism comprising: a counterweight plate; a first elastic member arranged on both end surfaces of the counterweight plate; a second elastic member, at least two of which are arranged around the counterweight plate; wherein the pole is connected to the lower part of the spring operating mechanism; the counterweight plate is parallel to its installation plane on the spring operating mechanism; the expansion and contraction directions of the first elastic member and the second elastic member are perpendicular to their installation planes on the spring operating mechanism.

[0008] Its further technical solution is that the spring operating mechanism includes a box body, a driving shaft and a transmission assembly arranged in the box body; the pole includes a pull rod, and the pull rod is connected to the circuit of the pole; the driving shaft is connected to the pull rod through the transmission assembly; the driving shaft is rotated, and the driving shaft drives the pull rod to move by driving the transmission assembly to disconnect or connect the circuit of the pole.

[0009] A further technical solution is that the transmission assembly includes: a primary connecting rod, the upper end of which is connected to the driving shaft; a secondary connecting rod, which is rotatably connected to the lower end of the primary connecting rod; a tertiary connecting rod, the upper end of which is rotatably connected to the box body, and the lower end of which is rotatably connected to the secondary connecting rod;

[0010] Wherein, a connecting block is rotatably provided on the three-stage connecting rod, and the pull rod is connected to the three-stage connecting rod via the connecting block.

[0011] A further technical solution is that a sleeve is provided on the primary connecting rod, and the sleeve is key-connected to the driving shaft.

[0012] A further technical solution is that the anti-vibration mechanism also includes a parallel upper cover and a lower cover, the upper cover is connected to and parallel to the installation plane of the spring operating mechanism; the first elastic member and the second elastic member are arranged between the upper cover and the lower cover.

[0013] A further technical solution is that a connecting rod is connected between the upper cover and the lower cover, and extension parts are arranged on the upper cover and the lower cover facing each other; the counterweight plate and the first elastic member are arranged on the connecting rod, and the second elastic member connects the upper cover and the lower cover through the extension part.

[0014] A further technical solution is that four second elastic members are provided, and the four second elastic members are evenly arranged around the counterweight plate.

[0015] A further technical solution is that it also includes a tilt sensor, which is arranged inside the spring operating mechanism.

[0016] A further technical solution is that at least three sets of transmission components are simultaneously arranged on the driving shaft, and each set of the transmission components is individually connected to one of the poles.

[0017] A further technical solution is that the first elastic member is a disc spring and the second elastic member is a spring.

[0018] The beneficial technical effects of the present invention are as follows

[0019] (1) The ultra-small environmentally friendly gas inflatable cabinet circuit breaker of the present invention has a pole arranged horizontally and connected to the lower part of the spring operating mechanism. After the pole is arranged horizontally, the shape of the circuit breaker is changed to L-shaped, and the original rear position of the circuit breaker is vacant, and the isolation mechanism part in the inflatable cabinet can be arranged at this position, thereby reducing the height size of the inflatable cabinet.

[0020] At the same time, an anti-vibration mechanism is provided on the spring operating mechanism, and the anti-vibration mechanism includes a counterweight plate, a first elastic member, and a second elastic member. When the circuit breaker vibrates during closing and opening, the counterweight plate will be driven to resonate, and the vibration energy will be quickly transferred to the first elastic members at the upper and lower ends of the counterweight plate. The vibration energy is dissipated by utilizing the damping characteristics of the first elastic member, and the circuit breaker is quickly stabilized. When the vibration of the circuit breaker is large, the vibration energy will be directly transferred to multiple second elastic members, and the second elastic members and the first elastic members will work together to consume the vibration energy and stabilize the circuit breaker. Due to the anti-vibration effect of the anti-vibration mechanism, the spacing between different components in the gas cabinet can be designed to be closer. At this time, the sulfur hexafluoride gas commonly used in the gas cabinet can be replaced with an environmentally friendly gas with a slightly worse insulation effect without increasing the volume of the gas cabinet, which is convenient for the transformation of old power systems.

[0021] (2) Furthermore, the first elastic member is a disc spring, and a plurality of disc springs are stacked and used. The friction forces between adjacent disc springs interact with each other, which can effectively absorb and dissipate energy.

[0022] (3) Furthermore, a tilt sensor is provided to monitor the tilt angle of the circuit breaker. When an accident occurs and the inflatable cabinet tilts, the tilt sensor can quickly provide feedback to the controller to disconnect the circuit breaker, thereby reducing safety hazards and improving the intelligence level of the inflatable cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The three-dimensional structural schematic diagram of the ultra-small environmentally friendly gas-filled cabinet circuit breaker of the present invention is shown.

[0024] Figure 2 The internal structure schematic diagram of the ultra-small environmentally friendly gas-filled cabinet circuit breaker of the present invention is shown.

[0025] Figure 3 A partial enlarged view of the ultra-small environmentally friendly gas-filled cabinet circuit breaker at position A of the present invention is shown.

[0026] Figure 4 The schematic diagram of the front view structure of the anti-vibration mechanism in the ultra-small environmentally friendly gas-filled cabinet circuit breaker of the present invention is shown.

[0027] Markings in the accompanying drawings:

[0028] 1. Box body; 2. Drive shaft; 3. Transmission assembly; 31. Primary connecting rod; 311. Sleeve; 32. Secondary connecting rod; 33. Tertiary connecting rod; 331. Connecting block; 4. Pole; 41. Pull rod; 5. Anti-vibration mechanism; 51. Upper cover; 511. Extension part; 52. Connecting rod; 53. Counterweight plate; 54. First elastic member; 55. Second elastic member; 56. Lower cover. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present invention clearer, the device proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they do not have technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0030] In the description of the present invention, the orientations or positional relationships indicated by terms such as “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, and “circumferential” are defined as orientations or positional relationships based on those shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] An extra-small environmentally friendly gas-filled cabinet circuit breaker includes a spring operating mechanism, a pole 4 and an anti-vibration disk. The pole 4 is connected to the spring operating mechanism, and the pole 4 is arranged horizontally. After the pole 4 is arranged horizontally, the shape of the circuit breaker is changed to an L-shape, and the original rear position of the circuit breaker is vacated, and the isolation mechanism part in the gas-filled cabinet can be arranged at this position, thereby reducing the height dimension of the gas-filled cabinet. The anti-vibration mechanism 5 is connected to the spring operating mechanism, and the anti-vibration mechanism 5 includes a counterweight disk 53, a first elastic member 54 and a second elastic member 55. The first elastic member 54 is arranged on the two end surfaces of the counterweight disk 53. The second elastic member 55, at least two are arranged around the counterweight disk 53. Among them, the pole 4 is connected to the lower part of the spring operating mechanism. The counterweight disk 53 is parallel to its installation plane on the spring operating mechanism. The expansion and contraction directions of the first elastic member 54 and the second elastic member 55 are perpendicular to their installation plane on the spring operating mechanism. When the circuit breaker vibrates during closing and opening, it will drive the counterweight plate 53 to resonate, and quickly transfer the vibration energy to the first elastic members 54 at the upper and lower ends of the counterweight plate 53. The damping characteristics of the first elastic members 54 are used to dissipate the vibration energy and quickly stabilize the circuit breaker. When the vibration of the circuit breaker is large, the vibration energy will be directly transferred to the multiple second elastic members 55. The second elastic members 55 and the first elastic members 54 work together to consume the vibration energy and stabilize the circuit breaker. Due to the anti-vibration effect of the anti-vibration mechanism 5, the spacing between different components in the gas cabinet can be designed to be closer. At this time, the sulfur hexafluoride gas commonly used in the gas cabinet can be replaced with an environmentally friendly gas with a slightly worse insulation effect without increasing the volume of the gas cabinet, which is convenient for the transformation of old power systems.

[0032] Preferably, a tilt sensor is also included, which is arranged inside the spring operating mechanism. The tilt sensor can be a commercially available Ruifen RNA816T tilt sensor. The tilt angle of the circuit breaker is monitored by the tilt sensor. When an accident occurs and causes the inflatable cabinet to tilt, the tilt sensor can quickly feedback to the controller to disconnect the circuit breaker, reduce safety hazards, and improve the intelligence level of the inflatable cabinet.

[0033] More preferably, a plurality of anti-vibration mechanisms 5 are provided, and the plurality of anti-vibration mechanisms 5 are provided on the same surface of the box body 1 , or the plurality of anti-vibration mechanisms 5 are provided on multiple surfaces of the box body 1 , to jointly support the circuit breaker and absorb the vibration of the circuit breaker.

[0034] The spring operating mechanism includes a box body 1, a drive shaft 2 and a transmission assembly 3 arranged in the box body 1. The pole 4 includes a pull rod 41, and the pull rod 41 connects the circuit of the pole 4. The drive shaft 2 is connected to the pull rod 41 through the transmission assembly 3. When the drive shaft 2 is rotated, the drive shaft 2 drives the pull rod 41 to move through the drive transmission assembly 3 to disconnect or connect the circuit of the pole 4.

[0035] The transmission assembly 3 includes a primary connecting rod 31, a secondary connecting rod 32 and a tertiary connecting rod 33. Each connecting rod can be a double-arm connecting rod, which provides better balance and stability and reduces the impact and vibration of the pull rod 41 during movement. The upper end of the primary connecting rod 31 is connected to the drive shaft 2. The secondary connecting rod 32 is rotatably connected to the lower end of the primary connecting rod 31. The upper end of the tertiary connecting rod 33 is rotatably connected to the box body 1, and the lower end is rotatably connected to the secondary connecting rod 32. Among them, a connecting block 331 is rotatably provided on the tertiary connecting rod 33, and the pull rod 41 is connected to the tertiary connecting rod 33 through the connecting block 331. The drive shaft 2 is rotated, and the drive shaft 2 drives the primary connecting rod 31 and the secondary connecting rod 32 to move, and the secondary connecting rod 32 drives the tertiary connecting rod 33 to swing around the box body 1. When the tertiary connecting rod 33 swings away from the pole 4, the pull rod 41 is pulled to disconnect the circuit in the pole 4; when the tertiary connecting rod 33 swings close to the pole 4, the pull rod 41 is pushed to connect the circuit in the pole 4. The pull rod 41 is driven by a connecting rod transmission, and the movement track is smooth, thereby reducing vibration and impact during the movement of the pull rod 41.

[0036] Preferably, a sleeve 311 is provided on the primary connecting rod 31, and the sleeve 311 is keyed to the drive shaft 2. The keyed connection has a good positioning effect, and the rotational motion of the drive shaft 2 can be accurately converted into the swinging motion of the primary connecting rod 31, thereby ensuring the precise motion stroke of the pull rod 41 and reducing impact.

[0037] More preferably, at least three transmission assemblies 3 are arranged on the drive shaft 2, and each transmission assembly 3 is connected to a pole 4, that is, the on and off of multiple circuits can be controlled simultaneously by the rotation of the drive shaft 2. One circuit breaker is used instead of multiple independent circuit breakers to reduce the space occupied in the inflatable cabinet.

[0038] The anti-vibration mechanism 5 also includes a parallel upper cover 51 and a lower cover 56, and the upper cover 51 is connected and parallel to the installation plane of the spring operating mechanism. The first elastic member 54 and the second elastic member 55 are arranged between the upper cover 51 and the lower cover 56. A connecting rod 52 is connected between the upper cover 51 and the lower cover 56, and extensions 511 are arranged on the upper cover 51 and the lower cover 56 facing each other. The counterweight plate 53 and the first elastic member 54 are arranged on the connecting rod 52, and the second elastic member 55 connects the upper cover 51 and the lower cover 56 through the extension 511. While the extension 511 fixes the position of the second elastic member 55, the extension 511 on the upper cover 51 and the lower cover 56 can also limit the movement of the lower cover 56 relative to the upper cover 51, thereby avoiding excessive swing amplitude of the anti-vibration mechanism 5. Three second elastic members 55 can be provided, so that the upper cover 51 can be tilted in any direction to obtain support from the second elastic member 55.

[0039] Preferably, the first elastic member 54 is a disc spring, and multiple disc springs are stacked and used. The friction between adjacent disc springs interacts with each other, which can effectively absorb and dissipate vibration energy. The second elastic member 55 is a spring, which has a simple structure and low cost.

[0040] More preferably, four second elastic members 55 are provided, and the four second elastic members 55 are evenly arranged around the counterweight plate 53. No matter which direction the upper cover 51 tilts, at least one second elastic member 55 is compressed to support the upper cover 51, and one second elastic member 55 is stretched to pull the upper cover 51, thereby reducing the vibration amplitude of the entire circuit breaker.

[0041] The specific workflow of the present invention is as follows:

[0042] When closing and opening the circuit breaker, the drive shaft 2 rotates, driving the first-stage connecting rod 31, the second-stage connecting rod 32 and the third-stage connecting rod 33 to swing. The third-stage connecting rod 33 swings around the connection position between the third-stage connecting rod 33 and the box body 1, driving the connecting block 331 away from or close to the pole axis. The moving connecting block 331 drives the pull rod 41 to slide in the pole 4 to achieve closing and opening. In the process of closing and opening the circuit breaker, the vibration generated by each transmission mechanism is transmitted to the anti-vibration mechanism 5, driving the counterweight plate 53 to resonate, and transmitting the vibration energy to the first elastic member 54 at the upper and lower ends of the counterweight plate 53, and the vibration energy is dissipated by using the damping characteristics of the first elastic member 54. When the vibration is large, the vibration energy is further transmitted to multiple second elastic members 55, and the second elastic members 55 and the first elastic members 54 work together to consume the vibration energy and stabilize the circuit breaker. At the same time, during the entire working process of the circuit breaker, the tilt sensor continuously detects the tilt angle of the circuit breaker.

[0043] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. Extra small environmentally friendly gas-filled cabinet circuit breaker, characterized in that: The circuit breaker comprises: Spring operating mechanism; A pole connected to the spring operating mechanism, the pole being arranged transversely; An anti-vibration mechanism is connected to the spring operating mechanism, and the anti-vibration mechanism comprises: Weight plate; A first elastic member, arranged on both end surfaces of the counterweight plate; Second elastic members, at least two of which are arranged around the counterweight plate; Wherein, the pole is connected to the lower part of the spring operating mechanism; the counterweight plate is parallel to its installation plane on the spring operating mechanism; the expansion and contraction direction of the first elastic member and the second elastic member is perpendicular to their installation plane on the spring operating mechanism.

2. The ultra-small environmentally friendly gas-filled cabinet circuit breaker according to claim 1, characterized in that: The spring operating mechanism comprises a box body, a driving shaft and a transmission assembly arranged in the box body; the pole comprises a pull rod, and the pull rod is connected to the circuit of the pole; the driving shaft is connected to the pull rod through the transmission assembly; The drive shaft is rotated, and the drive shaft drives the transmission assembly to drive the pull rod to move, so as to disconnect or connect the circuit of the pole.

3. The ultra-small environmentally friendly gas-filled cabinet circuit breaker according to claim 2, characterized in that: The transmission assembly comprises: A primary connecting rod, the upper end of which is connected to the driving shaft; A secondary connecting rod, rotatably connected to the lower end of the primary connecting rod; A third-level connecting rod, the upper end of which is rotatably connected to the box body, and the lower end of which is rotatably connected to the second-level connecting rod; Wherein, a connecting block is rotatably provided on the three-stage connecting rod, and the pull rod is connected to the three-stage connecting rod via the connecting block.

4. The ultra-small environmentally friendly gas-filled cabinet circuit breaker according to claim 3, characterized in that: A sleeve is provided on the primary connecting rod, and the sleeve is key-connected to the driving shaft.

5. The ultra-small environmentally friendly gas-filled cabinet circuit breaker according to claim 1, characterized in that: The anti-vibration mechanism further comprises a parallel upper cover and a lower cover, wherein the upper cover is connected to and parallel to the installation plane of the spring operating mechanism; the first elastic member and the second elastic member are arranged between the upper cover and the lower cover.

6. The ultra-small environmentally friendly gas-filled cabinet circuit breaker according to claim 5, characterized in that: A connecting rod is connected between the upper cover and the lower cover, and extension parts are arranged on the upper cover and the lower cover facing each other; the counterweight plate and the first elastic member are arranged on the connecting rod, and the second elastic member connects the upper cover and the lower cover through the extension part.

7. The ultra-small environmentally friendly gas-filled cabinet circuit breaker according to claim 1, characterized in that: There are four second elastic members, and the four second elastic members are evenly arranged around the counterweight plate.

8. The ultra-small environmentally friendly gas-filled cabinet circuit breaker according to claim 1, characterized in that: A tilt sensor is also included, and the tilt sensor is arranged inside the spring operating mechanism.

9. The ultra-small environmentally friendly gas-filled cabinet circuit breaker according to claim 2, characterized in that: At least three sets of transmission components are arranged on the driving shaft, and each set of the transmission components is connected to one of the poles separately.

10. The ultra-small environmentally friendly gas-filled cabinet circuit breaker according to claim 1, characterized in that: The first elastic member is a disc spring, and the second elastic member is a spring.

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