JP3198725U - Outdoor vacuum circuit breaker - Google Patents

Abstract

An outdoor vacuum circuit breaker is provided. An outdoor vacuum circuit breaker includes a control box 1, a spring operation system, three vacuum valves 2, and a current transformer 3 installed in each of the three vacuum valves 2. Three vacuum valves 2 are fixedly installed on the control box 1. The spring operating system is housed in the control box 1. All three vacuum valves 2 have insulating rods for controlling the vacuum valve operation. All three insulating rods are connected to a spring operating system. The spring operation system includes a frame, an operation device installed on the frame, and a fixing and opening device. The structure of the above-described outdoor vacuum circuit breaker is simple, has few man-hours for operation, is highly reliable in terms of safety, and has high work reliability. [Selection] Figure 1

Description

  The present invention relates to an outdoor vacuum circuit breaker related to electric power and electrical equipment.

  Outdoor vacuum circuit breakers are commonly used in the power distribution process. A conventional outdoor vacuum circuit breaker includes a control box, a spring operation system, three vacuum valves, and a current transformer installed in each. Outside the control box, a power supply energizing handle, a display indicating opening / closing of the switch, and a power shutoff handle are installed. This power supply energizing handle, the switch indicating opening and closing, and the power shutoff handle are all connected through the connecting shaft through the control box body and the spring operating system. The three vacuum valves are fixedly installed at the top of the control box, and the spring operation system is housed in the control box. Each of the three vacuum valves is provided with an insulating rod for controlling the operation of the vacuum valve. All three insulating rods are connected to a spring operating system.

  A conventional spring operation system includes a driving device and a device for fixing and releasing. The device for fixing and releasing includes a reset spring, a slider, and a swing arm that contacts the slider. The output shaft is connected to the swing arm. When the swing arm swings, the operation of the slider is suppressed, and if the reset spring is activated and reaches a certain position, the slider is returned to its original position and fixed by the reset spring. When opening, pulling the slider with force puts the action of the reset spring. When a certain position is reached, the slider moves away from the swing arm, and the swing arm returns to its original position.

The outdoor vacuum circuit breaker having the structure described above has the following drawbacks in the actual use process.
1. The spring operation system according to the prior art simply adopts a first-class quadruple rod structure and exhibits the function of the spring operation system. Although the structure is simple, this structure itself does not have a labor-saving structure. The purpose of saving power is achieved mainly by the elastic strength of the energy storage spring, the cam and the structure that extends the distance of the power point from the fulcrum of the first class quadruple rod. In this case, the size of the spring operation system is bulky, and structural waste and operation man-hours increase. In addition, an increase in the size of the spring operating system increases the interval between the three vacuum valves, increasing the overall volume of the outdoor vacuum circuit breaker.

  2. Fixing and opening devices with this type of structure are somewhat difficult to operate because the spring resistance must be overcome in the course of use. Furthermore, when the swing arm is released, the energy to return the swing arm becomes very strong. Therefore, the slider and the swing arm are easily damaged by friction, and the effectiveness of the fixing and releasing device is lost. Therefore, the reliability of the conventional spring operation system is not high.

  The technical problem to be solved by the present invention is to overcome the drawbacks of the above-mentioned conventional technology, which has a simple structure, a small number of man-hours for operation, and high reliability in terms of safety. The goal is to provide a good outdoor vacuum circuit breaker.

In order to solve the above problems, the present invention provides the following means.
The outdoor vacuum circuit breaker of the present invention includes a control box, a spring operation system, three vacuum valves, and a current transformer installed in the three vacuum valves. Three vacuum valves are fixed on the control box. The spring operating system is housed in a control box.

  All three vacuum valves are provided with insulating rods for controlling the vacuum valve operation. All three insulating rods are connected to a spring operating system. The spring operating system comprises a frame, an operating device installed on the top of the frame, and a fixing and releasing device.

  The operating device includes a storage spring, a reset spring, a movable contact spring, a cam, and a parallel quadruple rod. The parallel quadruple rod includes the first frame rod, the second frame rod, the first, the fixed frame, the second connecting rod in which the first frame rod and the insulating rod are in an extreme phase state, the second frame rod and the insulating rod polar phase. It includes a third connecting rod that exhibits a state.

  A roller is installed on the first connecting rod, and the roller contacts or separates from the cam. The second connecting rods are equal to and parallel to the length of the third connecting rod. One end of the second connecting rod, one end of the first lever, and one end of the first connecting rod are all connected by a first stop shaft and a hinge. One end of the third connecting rod, one end of the second lever, and another end of the first connecting rod are all connected to the second stop shaft by a hinge. All the other ends of the second connecting rod and the third connecting rod are connected by a support and a hinge.

  One end of the reset spring and the movable contact spring is in contact with the support, the other end of the reset spring is in contact with the frame, and the movable contact spring is in contact with another movable contact spring. The fixing and releasing device includes a swing arm, a first rotating shaft and a cooperating swing plate and cam. The central part of the swing arm is connected to the frame in a rotating state. One end of the swing arm is connected to the output shaft by a hinge, and an arc block is installed at the other end of the swing arm.

  The first rotating shaft is connected to the frame in a movable state. The spherical surface inside the second rotating shaft has a localization groove corresponding to the arc block. The central part of the swing plate is fixed to the first shaft. The cam is installed on the operation shaft. One end of the swing plate is installed at the upper front of the cam.

  The center of the swing arm is connected to the frame in a movable state means that the second rotation shaft connected to the frame is movable and the second rotation shaft is connected to the center of the swing arm in a movable state. Indicates.

  Another end of the swing plate is installed below the front surface of the second rotating shaft.

  The frame is further provided with a localization axis for limiting the position of the swing arm, and the swing arm has an arc groove corresponding to the localization axis. The stereotaxic axis is in contact with the inside of the arc groove.

The localization axis is installed at one end of the swing arm close to the arc block.
The current transformer is an outdoor plug type current transformer.
The vacuum valve is a vacuum valve that is hermetically fixed.
The control box body is a sealed body.

In the case of adopting the above structure, the present invention has the following advantages as compared with the prior art.
1. The present invention adopts a reverse four-quadru rod, and is a labor-saving structure and a structure in which the shaft directly stores energy. The feature of utilizing the insulating rod polar phase state has been that a very large strength has been obtained in the vicinity of the polar phase because the speed of the moving parts has been close to zero. The movable parts refer to the second connecting rod and the third connecting rod, and the driving parts corresponding to the second connecting rod and the third connecting rod, that is, the first frame rod and the second frame rod.
For this reason, the present invention drives the second connecting rod and the third connecting rod with a relatively small force when the second connecting rod and the third connecting rod are close to the extreme phase, and at the same time the second connecting rod The force applied to the frame by the rod and the third connecting rod is increased to sufficiently satisfy the design requirements for opening and closing.
This becomes a decisive factor for further reducing the hardness of the energy storage spring, and the size is small corresponding to it, so that the purpose of saving labor is achieved. Thus, the volume of the spring operation system is reduced, so that the structure is not wasted and the man-hours for operation are reduced. In addition, the smaller spring operating system reduces the distance between the three vacuum valves, reducing the overall volume of the outdoor vacuum circuit breaker.

2. At the same time, all the fixing and releasing devices of the present invention do not need to overcome the spring resistance, and the movement of the cam and the output shaft is used to operate the fixing and releasing device. When opening, it is only necessary to turn the first rotary shaft lightly by hand. Therefore, the operation of the outdoor vacuum circuit breaker according to the present invention is very simple.
In addition, since there is no contact between the arc block and the stereotaxic groove at the time of opening, there is no problem that the fixing and opening device becomes ineffective due to wear. Therefore, the reliability of the outdoor vacuum circuit breaker according to the present invention is high.

  In the improvement, the other end of the swing plate is attached below the front of the second rotating shaft, which is advantageous for determining the position of the swing plate, thus ensuring the reliability of the operation of the fixing and opening device. become.

  For improvement, the frame was further equipped with a stereotaxic axis for determining the position of the swing arm. The swing arm has an arc groove corresponding to the localization axis. The localization axis is supported inside the arc groove, and the use of the localization groove is advantageous in that the localization axis is more accurately localized. Therefore, the reliability of the operation of the fixing and opening device is increased.

  In the improvement, the current transformer is an outdoor plug type current transformer, which not only facilitates the installation of the current transformer, but also increases the overall production efficiency of the outdoor vacuum circuit breaker.

  For improvement, the vacuum valve is a hermetically sealed vacuum valve, which improves the compressibility, heat resistance, and anti-twist performance of the vacuum valve. Therefore, the reliability of the work of the outdoor vacuum circuit breaker is ensured.

It is a front view of the outdoor vacuum circuit breaker of the present invention. It is sectional drawing of the outdoor vacuum circuit breaker of this invention. It is a three-dimensional view of a miniaturized low energy operating device of the present invention. 1 is a front view of a miniaturized low energy operating device of the present invention. FIG. It is a bird's-eye view of the downsized low energy operating device of the present invention. It is AA sectional drawing of the low energy operating device reduced in size of this invention. It is a sketch of the structure of the spring operation system 1st direction of this invention. It is a sketch of the structure of the spring operation system 2nd direction of this invention.

Next, the present invention will be described more specifically with reference to the drawings and examples.
1, 2, 3, 4, 5, 6, 7, and 8, the outdoor vacuum circuit breaker according to the present invention includes a control box 1, a spring operation system, and three vacuums. A current transformer 3 is installed in each of the valve 2 and the three vacuum valves 2. A power-on handle 31, an open / close display 32, and a power shut-off handle 25 are further installed outside the control box 1, all of which are connected to the body of the control box 1 through the spring operation system by a connecting shaft. ing. In this embodiment, the connecting shaft of the power-on handle 31 is connected to the trunk portion through the operating shaft 27. The connecting shaft of the open / close display 32 is connected to the body portion through the first retaining shaft 17. The connecting shaft of the power shut-off handle 25 is connected through the body portion and the first rotating shaft 21.

  The three vacuum valves 2 are fixedly installed on the control box 1. In this embodiment, the three vacuum valves 2 are fixed to the control box by bolts. The spring operation system is installed inside the control box 1. All three vacuum valves 2 have insulating rods 4 that control vacuum valve operation. All three insulating rods 4 are connected to the insulating rod 4 and the spring operating system. In this embodiment, each one terminal portion of the three insulating rods 4 is connected to the movable contact 19.

  The spring operating system is installed on the operating device of the frame 5 and the fixing and releasing device by the frame 5. The operating device includes a power storage spring 6, a reset spring 7, a movable contact spring 8, a first cam 9, and a parallel quadruple rod.

  The parallel quadrupole rod is composed of the first frame rod 10, the second frame rod 11, the first connection rod 12, the frame 13, the second connection rod 14 in the extreme phase configured with the first frame rod 10, and the second frame. It includes a third connecting rod 15 in an extreme phase state that is configured together with the rod 11. The first connecting rod 12 is provided with a roller 16, and the roller 16 and the first cam 9 are in contact with or separated from each other. The 2nd connecting rod 14 is equal to the length of the 3rd connecting rod 15, and is mutually parallel. One end of the second connecting rod 14, one end of the first frame rod 10 and one end of the first connecting rod 12 are all connected to the first stop shaft 17 by a hinge, and one end of the third connecting rod 15, the second frame One end of the rod 11 and another one end of the first connecting rod 12 are all connected to the second stop shaft 18 by a hinge. All the other ends of the second connecting rod 14 and the third connecting rod 15 are connected to the frame 13 by hinges. The other ends of the reset spring 7 and the movable contact spring 8 are in contact with the frame 13. The reset spring 7 and the movable contact spring 8 are once in contact with the frame 13. Another end of the reset spring 7 is in contact with the frame 5. Another end of the movable contact spring 8 is in contact with the movable contact 19. That is, the movable contact 19 is in contact with one terminal of the insulating rod 4 through the movable contact spring 8.

  The fixing and releasing device includes a swing arm 20, a first rotating shaft 21, a cooperating swing plate 22 and a second cam 23. The central portion of the swing arm 20 is connected to the frame 5 in a movable state. That is, the center portion of the swing arm 20 faces the frame 5 and rotates to the left and right. One end of the swing arm 20 is connected to the first stop shaft 17 by a hinge. An arc block 24 is installed at the other end of the swing arm 20. The first rotating shaft 21 is connected to the frame 5 in a movable state. A localization groove 26 combined with the arc block 24 is provided on the spherical surface at one end of the first rotating shaft 21. A central portion of the swing plate 22 is fixed to the first rotating shaft 21. The second cam 23 is installed on the operation shaft 27. One end of the swing plate 22 is installed above the front of the second cam 23.

The central part of the swing arm 20 is connected to the frame 5 in a movable state. The second rotary shaft 28 is connected to the frame 5 in a rotatable state, and the second rotary shaft 28 is connected to the frame 5. It shows that it is connected to the central part in a rotatable state.
Another end of the swing plate 22 is installed below the front surface of the second rotating shaft 28.

The frame 5 is provided with a localization shaft 29 for limiting the position of the swing arm 20. The swing arm 20 is provided with an arc groove 30 combined with a stereotaxic shaft 29. The localization shaft 29 is in contact with the inside of the arc groove 30.
The localization shaft 29 is installed at one end of the swing arm 20 close to the arc block 24.
The current transformer 3 is an outdoor plug type current transformer.
The vacuum valve 2 is a vacuum valve that is hermetically fixed. The vacuum valve employs a 0.075A vacuum valve. The control box 1 body is a sealed body.

  When the power is turned on, the operating shaft 27 is rotated by rotating the energizing handle 31, and then the accumulator spring 6 and the cam 9 are operated. As a result, the movable contact 19, the first rotating shaft 21, the reset spring 7, the movable contact spring 8 and the like in all the parallel quadruple rod structures are operated. When the rotation reaches a predetermined position, the swing arm 20 is operated by the first stop shaft 17. As a result, the arc block 24 on the swing arm 20 comes into contact with the swing motion 26. At this time, all spring operating systems are placed in a stable power supply. At the time of interruption, the arc block 24 is separated from the localization groove 26 by the rotation of the first rotating shaft 21, and the energy of the energy storage spring 6 is reset again.

  The foregoing is merely illustrative of the preferred embodiment of the present invention, but does not limit the claims. The present invention is not limited to the above-described embodiments, and structural changes are allowed. Any variation within the protection scope of the independent claim of the present invention shall fall within the protection scope of the present invention.

1 Control Box 2 Vacuum Valve 3 Current Transformer 4 Insulating Rod 5 Frame 6 Energy Storage Spring 7 Reset Spring 8 Movable Contact Spring 9 First Cam 10 First Frame Rod 11 Second Frame Rod 12 First Connecting Rod 13 Support 14 First Two connecting rods 15 Third connecting rod 16 Roller 17 First stop shaft 18 Second stop shaft 19 Movable contact 20 Swing arm 21 First rotating shaft 22 Swing plate 23 Second cam 24 Arc block 25 Power shutoff handle 26 Positioning groove 27 Operation axis 28 Second rotation axis 29 Localization axis 30 Arc groove 31 Power-on handle 32 Open / close indication

Claims (8)

An outdoor vacuum circuit breaker comprising a control box (1), a spring operating system, three vacuum valves (2) and a current transformer (3) installed in each of the three vacuum valves (2),
The three vacuum valves (2)
It is fixedly installed in the control box (1) and the spring operation system is installed inside the control box (1).
All three vacuum valves (2) are installed on an insulating rod (4) for controlling the vacuum valve, and all three insulating rods (4) are connected to a spring operating system,
The spring operation system is composed of a frame (5) and an operation device installed in the frame (5), and a fixing and releasing device,
The operating device includes
The accumulating spring (6), the reset spring (7), the movable contact spring (8), the first cam (9), and four parallel insulating rods are included. (10), the second frame rod (11), the first coupling rod (12), the frame (13), the second frame rod (14) that forms an insulating rod pole state with the first frame rod (10), A third connecting rod (15) that forms an insulating rod pole state with the two-frame rod (11);
The first connecting rod (12) is provided with a roller (16) that contacts or separates from the first cam (9),
The second connecting rod (14) is equal in length to and parallel to the third connecting rod (15);
One end of the second connecting rod (14), one end of the first frame rod (10) and one end of the first connecting rod (12) are connected to the first retaining shaft (17) by a hinge,
One end of the third connecting rod (15), one end of the second frame rod (11), and another end of the first connecting rod (12) are all connected to the second stop shaft (18) by hinges,
The other ends of the second connecting rod (14) and the third connecting rod (15) are all connected to the frame (13) by a hinge,
One end of the reset spring (7) and the movable contact spring (8) are all in contact with the frame (13),
The other end of the reset spring (7) and the frame (5) are in contact,
The other end of the movable contact spring (8) is in contact with the movable contact (19),
The fixing and releasing device includes a swing arm (20), a first rotating shaft (21) and a cooperating swing plate (22) and a second cam (23),
The central part of the swing arm (20) is connected to the frame (5) in a rotatable state,
One end of the swing arm (20) is connected to the first stop shaft (17) by a hinge,
At another end of the swing arm (20), an arc block (24) is installed,
The first rotating shaft (21) is connected to the frame (5) in a rotatable state,
The spherical surface inside the first rotating shaft (21) has a localization groove (26) corresponding to the arc block (24),
The inside of the swing plate (22) is fixed to the first rotating shaft (21),
The second cam (23) is installed on the operating shaft (27),
One end of the swing plate (22) is installed above the front of the second cam (23). An outdoor vacuum circuit breaker. The outdoor vacuum circuit breaker according to claim 1,
The center part of the swing arm (20) is connected to the frame (5) in a rotatable state, whereby the frame (5) is connected to the rotating second rotating shaft (28), and the second rotating shaft (28). Is an outdoor vacuum circuit breaker that is connected to the center of the swing arm (20) and rotates. The outdoor vacuum circuit breaker according to claim 2,
The outdoor vacuum circuit breaker characterized in that another end of the swing plate (22) is installed below the front surface of the second rotating shaft (28). The outdoor vacuum circuit breaker according to claim 1,
The frame (5) is provided with a localization axis (29) for limiting the position of the swing arm (20). The swing arm (20) is provided with an arc groove (30) that cooperates with the localization axis (29). The outdoor vacuum circuit breaker characterized in that the stereotaxic axis (29) is in contact with the inside of the arc groove (30). 5. The outdoor vacuum circuit breaker according to claim 4, wherein the localization axis (29) is installed close to one end of the swing arm (20) of the arc block (24). . The outdoor vacuum circuit breaker according to claim 1, wherein the current transformer (3) is an outdoor plug type current transformer. The outdoor vacuum circuit breaker according to claim 1, wherein the vacuum valve (2) is a sealed fixed vacuum valve. The outdoor vacuum circuit breaker according to claim 1, wherein the body portion of the control box (1) is a sealed body portion.

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