An outdoor vacuum circuit breaker mechanism

Abstract

The present invention relates to the technical field of circuit breakers, and in particular to an outdoor vacuum circuit breaker mechanism, wherein a hollow cylinder is provided at the lower end of a vacuum arc extinguishing chamber in an insulating cylinder, a cross bar is provided on one end of a moving contact inserted into the hollow cylinder, a cross partition is fixedly provided in the hollow cylinder, a latch is elastically plugged into the foot of a mechanism box, when the latch is in an upwardly pressed state, a movable plate moves inwardly and is used to block the upward movement of the cross bar, and the moving contact cannot move upward to perform a closing action, when the mechanism box is installed in place along a mounting frame, the latch pops out downward along the socket, and the movable plate is pulled outwardly and moved outwardly through a connecting rope, and the moving contact moves up to contact the fixed contact to complete the closing, and after closing, when the moving contact moves down again to open the circuit, the heat exchange plate is driven to move outwardly and laterally, and an air inlet passes out of the insulating cylinder with the heat exchange plate, and is used for ventilation with the hollow cylinder, which is beneficial for the outside air to quickly dissipate heat and cool down the hollow cylinder, and avoid local overheating of the insulating cylinder and the vacuum arc extinguishing chamber during opening, thereby affecting their service life.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, and in particular to an outdoor vacuum circuit breaker mechanism. Background Art

[0002] An outdoor vacuum circuit breaker generally includes a mechanism box and an insulating cylinder at the top of the mechanism box. A vacuum arc chamber is arranged in the insulating cylinder. Fixed contacts and moving contacts are arranged in the vacuum arc chamber. The fixed contacts and moving contacts are used to connect the power supply line and the load line respectively. A transmission mechanism, an operating mechanism and other devices are arranged in the mechanism box, and an insulating pull rod is extended into the insulating cylinder to drive the moving contact to make a closing and opening movement. In particular, when the contact is opened, the current forms a vacuum arc in the contact gap and forms a high temperature in the vacuum arc chamber. Existing outdoor vacuum circuit breakers, such as the outdoor vacuum circuit breaker disclosed in Chinese patent document CN114400163A, The outdoor pole-mounted vacuum circuit breakers disclosed in CN110349795B, etc., adopt a conventional circuit breaker body structure design, which has limited insulation effect on the insulating cylinder and the vacuum arc extinguishing chamber. In particular, when the contacts are opened, high temperature is formed in the vacuum arc extinguishing chamber, which can easily cause local overheating of the insulating cylinder and the vacuum arc extinguishing chamber, affecting the service life of the insulating cylinder and the vacuum arc extinguishing chamber. Outdoor vacuum circuit breakers are generally installed at high places such as electric poles, which are extremely inconvenient to repair. The insulating cylinder is usually designed as an integral part of the box. Even if an abnormality is found, it is not convenient to disassemble and install the insulating cylinder separately. The vacuum circuit breaker can only be replaced as a whole, which is troublesome to operate and leads to a waste of manpower and equipment costs. Summary of the invention

[0003] In view of this, the purpose of the present invention is to propose an outdoor vacuum circuit breaker mechanism to solve the problem that the existing outdoor vacuum circuit breakers have limited insulation effect on the insulation cylinder and vacuum arc chamber, especially when opening the circuit breaker, which may easily cause local overheating of the insulation cylinder and vacuum arc chamber, thereby affecting the service life of the device.

[0004] Based on the above purpose, the present invention provides an outdoor vacuum circuit breaker mechanism, including a mechanism box, an insulating cylinder is provided at the top of the mechanism box, a vacuum interrupter is provided in the insulating cylinder, a fixed contact is provided at the upper part of the vacuum interrupter, and a moving contact is movably provided at the lower part of the vacuum interrupter:

[0005] A hollow cylinder is provided at the lower end of the vacuum arc extinguishing chamber in the insulating cylinder, the bottom end of the moving contact is sequentially passed through the vacuum arc extinguishing chamber and the outside of the hollow cylinder, a cross bar is provided on the end of the moving contact passing through the hollow cylinder, a cross partition is fixedly provided in the hollow cylinder, a through hole for the moving contact to pass through is provided on the inner circle of the cross partition, a through groove is provided near the inner circle of the cross partition, a movable plate is slidably connected to the through groove, a heat exchange plate is plugged into the side end of the hollow cylinder, a hollow channel is provided in the heat exchange plate, an air inlet is provided at one end of the hollow channel, and an air outlet is provided at the other end;

[0006] A foot is provided at the bottom end of the mechanism box for installation on an outdoor mounting frame. A pin is elastically plugged into the foot, one end of the pin is connected to a connecting rope, one end of the connecting rope is inserted into the hollow cylinder and connected to the movable plate. A socket for the pin to be inserted is opened on the mounting frame. By pressing the pin upward, the movable plate moves inward horizontally so that the through groove is in a closed state, which is used to prevent the cross bar from moving upward. When the mechanism box is installed in place on the mounting frame, the pin pops out downward along the socket, and the movable plate is pulled outward horizontally by the connecting rope, and the through groove is in an open state. The moving contact moves up to contact the fixed contact, and after closing the switch, it moves down to open the switch, which drives the heat exchange plate to move outward horizontally, so that the air inlet passes through the outside of the insulating cylinder for ventilation with the hollow cylinder.

[0007] Preferably, the side end of the hollow tube is attached to the inner tube wall of the insulating tube, and the top end of the hollow tube is attached to the outer bottom wall of the vacuum arc extinguishing chamber.

[0008] Preferably, the bottom end of the vacuum arc extinguishing chamber is provided with a groove matching the head end of the moving contact, and a first sealing ring is fixedly provided at the inner bottom end of the groove. When the moving contact moves downward and is in the open state, the head end of the moving contact is embedded in the groove and pressed against the first sealing ring, and a second sealing ring is fixedly provided on the inner top wall of the hollow cylinder.

[0009] Preferably, one end of the heat exchange plate passes through the insulating tube and is connected to a third sealing ring. In an initial state, the air inlet is located in the insulating tube and is pressed against the outer wall of the insulating tube through the third sealing ring.

[0010] Preferably, a toothed structure is provided on the outer bottom wall of the heat exchange plate, and an internal gear is rotatably connected in the hollow cylinder, and the internal gear is meshed with the outer bottom wall of the heat exchange plate. A wire wheel is connected to the side end of the internal gear, and a transmission rope is wound around the wire wheel. The bottom end of the transmission rope is forked into two strands, and are respectively connected to the two sides of the opening of the through groove. A transverse rope is horizontally connected between the two forked transmission ropes. The top of the outer end of the cross bar is designed as an arc-shaped end face. When the moving contact moves up, the arc-shaped end face at the top of the outer end of the cross bar abuts and passes over the transverse rope. When the cross bar moves down with the moving contact to open the gate, the bottom of the outer end of the cross bar abuts and pulls the transverse rope, driving the wire wheel and the internal gear to rotate synchronously, and the heat exchange plate is driven to move laterally outward through the internal gear, so that the air inlet passes through the outside of the insulating cylinder.

[0011] Preferably, a flip rod is attached to the bottom of the outer end of the cross bar, and the outer end of the flip rod is rotatably connected to the bottom of the cross bar through a rotating shaft. The outer end of the rotating shaft is connected to a thin rod, and the bottom end of the movable plate is connected to a connecting rod. The movable plate moves inward laterally, driving the connecting rod to move laterally synchronously until the connecting rod pushes the thin rod and drives the rotating shaft to rotate. The flip rod rotates synchronously with the rotating shaft to drive the transverse rope to detach from the cross bar.

[0012] Preferably, the air inlet is designed in the shape of a long strip perpendicular to the length direction of the hollow channel, and a plurality of air inlets are arranged at intervals.

[0013] Preferably, the ground feet are arranged below each insulating cylinder and are designed to be in the shape of a long strip parallel to the width direction of the mechanism box.

[0014] Preferably, the mounting frame includes a transverse support frame and an inclined support frame fixedly supported at the bottom end of the transverse support frame, the transverse support frame is provided with a strip frame matching the anchors, the sockets are opened on the strip frame, and are slidably arranged on the corresponding strip frame through the anchors, so as to press the pin upward until the pin slides to the socket and pops out downward along the socket.

[0015] The beneficial effects of the present invention are as follows: a hollow cylinder is provided at the lower end of the vacuum arc extinguishing chamber through the insulating cylinder, a cross bar is fixedly provided on one end of the moving contact inserted into the hollow cylinder, a cross partition is fixedly provided in the hollow cylinder, a heat exchange plate is plugged into the side end of the hollow cylinder, a foot is provided at the bottom end of the mechanism box, a latch is elastically plugged into the foot, when the latch is in an upwardly pressed state, the movable plate moves inwardly to make the through groove in a closed state, which is used to block the cross bar from moving upward, and the moving contact cannot move upward to perform a closing action, and the mechanism box is waiting for the mechanism box to close. When it is installed in place on the mounting frame, the pin pops out downward along the socket, and the movable plate is pulled outward and moved laterally through the connecting rope to open the through slot. The moving contact moves up to contact the fixed contact to complete the closing of the circuit breaker. After closing the circuit breaker, when it moves down to open the circuit breaker, the heat exchange plate is driven to move outward and the air inlet passes through the outside of the insulating cylinder with the heat exchange plate to ventilate the inside of the hollow cylinder, which is beneficial for the outside air to quickly dissipate heat and cool down the hollow cylinder, so as to avoid local overheating of the insulating cylinder and the vacuum interrupter when opening the circuit breaker, thereby affecting their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall front view structure of the circuit breaker of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the mechanism box of the present invention during installation on the mounting frame;

[0019] Figure 3 It is a structural schematic diagram of the mechanism box of the present invention when it is installed in place along the mounting frame;

[0020] Figure 4 It is a schematic diagram of the internal structure of the insulating tube of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the present invention when the moving contact moves up to close the circuit breaker;

[0022] Figure 6 It is a structural schematic diagram of the movable plate of the present invention when it moves inwards to make the through slot in a closed state;

[0023] Figure 7 It is a structural schematic diagram of the movable plate of the present invention when it moves outwards to make the through slot in an open state;

[0024] Figure 8 It is a schematic diagram of the structure of the transmission rope and the transverse rope of the present invention;

[0025] Fig. 9 It is a schematic diagram of the cross-sectional structure of the heat exchange plate of the present invention;

[0026] Fig.10 It is a schematic diagram of the top view of the heat exchange plate of the present invention;

[0027] Fig.11 It is a structural schematic diagram of the present invention when the moving contact is closed and then moved down to open;

[0028] Fig.12 It is a structural schematic diagram of another embodiment of the present invention when the moving contact is closed and then moved down to open;

[0029] Fig.13 For the present invention Fig.12 The enlarged schematic diagram of point A in the middle;

[0030] Fig.14 It is a structural schematic diagram of another embodiment of the present invention during the process of the movable plate moving inwardly;

[0031] Fig.15 For the present invention Fig.14 The enlarged schematic diagram of point B in the middle;

[0032] Fig.16 It is a structural schematic diagram of another embodiment of the present invention when the movable plate moves inwardly to make the through slot in a closed state;

[0033] Fig.17 For the present invention Fig.16 The enlarged schematic diagram of the center C;

[0034] Fig.18 It is a structural schematic diagram of the cross section of the connecting rod of the present invention.

[0035] The markings in the figure are:

[0036] 1. Mechanism box; 100. Hook; 2. Insulating cylinder; 3. Vacuum interrupter; 31. Groove; 32. First sealing ring; 33. Second sealing ring; 4. Fixed contact; 5. Moving contact; 6. Hollow cylinder; 7. Cross bar; 71. Flip rod; 72. Thin rod; 8. Cross partition; 81. Through hole; 82. Through groove; 9. Movable plate; 91. Connecting rod; 10. Heat exchange plate; 101. Hollow channel; 102. Air inlet; 103. Air outlet; 104. Third sealing ring; 11. Anchor; 12. Mounting frame; 120. Socket; 121. Horizontal support frame; 122. Oblique support frame; 123. Strip frame; 13. Pin; 14. Connecting rope; 15. Internal gear; 16. Wire wheel; 17. Transmission rope; 18. Horizontal rope. DETAILED DESCRIPTION

[0037] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0038] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10As shown, an outdoor vacuum circuit breaker mechanism comprises a mechanism box 1, an insulating cylinder 2 is provided at the top of the mechanism box 1, a vacuum arc extinguishing chamber 3 is provided in the insulating cylinder 2, a fixed contact 4 is provided in the upper part of the vacuum arc extinguishing chamber 3, a moving contact 5 is movably provided in the lower part of the vacuum arc extinguishing chamber 3, a hollow cylinder 6 is provided at the lower end of the vacuum arc extinguishing chamber 3 in the insulating cylinder 2, the bottom end of the moving contact 5 is sequentially passed through the vacuum arc extinguishing chamber 3 and the hollow cylinder 6, a cross bar 7 is provided on the end of the moving contact 5 passing through the hollow cylinder 6, a transverse partition 8 is fixedly provided in the hollow cylinder 6, a through hole 81 for the moving contact 5 to pass through is provided on the inner circle of the transverse partition 8, a through groove 82 is provided near the inner circle of the transverse partition 8, a movable plate 9 is slidably connected to the through groove 82, a heat exchange plate 10 is inserted into the side end of the hollow cylinder 6, a hollow channel 101 is provided in the heat exchange plate 10, an air inlet 102 is provided at one end of the hollow channel 101, and an air outlet 102 is provided at the other end 3. A foot 11 is provided at the bottom end of the mechanism box 1 for installation on an outdoor mounting frame 12. A plug 13 is elastically plugged on the foot 11. One end of the plug 13 is connected to a connecting rope 14. One end of the connecting rope 14 penetrates into the hollow tube 6 and is connected to the movable plate 9. A socket 120 for the plug 13 to penetrate is provided on the mounting frame 12. By pressing the plug 13 upward, the movable plate 9 moves inward horizontally, so that the through groove 82 is in a closed state, which is used to prevent the cross bar 7 from moving upward. When the mechanism box 1 is installed in place along the mounting frame 12, the plug 13 pops up downward along the socket 120, and the movable plate 9 is pulled outward horizontally by the connecting rope 14, and the through groove 82 is in an open state. The moving contact 5 moves upward to contact the fixed contact 4, and after the closing is completed, when it moves downward to open the switch, the heat exchange plate 10 is driven to move outward horizontally, so that the air inlet 102 passes through the outside of the insulating tube 2, which is used for ventilation with the hollow tube 6.

[0040] The present invention is based on the basic structure of an existing conventional circuit breaker, and includes a mechanism box 1. An insulating cylinder 2 is provided at the top of the mechanism box 1. A vacuum arc chamber 3 is provided in the insulating cylinder 2. A fixed contact 4 is fixedly provided at the upper part of the vacuum arc chamber 3. A moving contact 5 is movably provided at the lower part of the vacuum arc chamber 3. A hollow cylinder 6 is provided at the lower end of the vacuum arc chamber 3 in the insulating cylinder 2. The contact consists of a head and a guide rod. The guide rod of the moving contact 5 is sequentially passed through the vacuum arc chamber 3 and the outside of the hollow cylinder 6. An insulating pull rod is connected to the bottom end of the guide rod of the moving contact 5, and is connected to the transmission mechanism, the operating mechanism and other devices in the mechanism box 1, and is used to operate the moving contact 5 to move up and down to make a closing and opening movement. A cross bar 7 is fixedly provided on one end of the moving contact 5 that passes through the hollow cylinder 6, and a cross partition 8 is fixedly provided in the hollow cylinder 6. Figure 4 , Figure 6 , Figure 7As shown, the inner ring of the diaphragm 8 is provided with a through hole 81 for the movable contact 5 to freely pass through, and the diaphragm 8 is provided with a through groove 82 near its inner ring, and a movable plate 9 is slidably connected to the through groove 82. Specifically, the end of the movable plate 9 away from the through hole 81 is slidably inserted into the diaphragm 8, and an elastic component such as a spring is connected to the inside of the diaphragm 8 to push the movable plate 9 to pop out, that is, a structure similar to that of an existing elastic telescopic rod, so that the through groove 82 is in a closed state, and the side end of the hollow cylinder 6 is plugged with a heat exchange plate 10, as shown in FIG. Fig. 9 , Fig.10 As shown, a hollow channel 101 is provided in the heat exchange plate 10, an air inlet 102 is provided at one end of the hollow channel 101, and an air outlet 103 is provided at the other end;

[0041] At the same time, a foot 11 is provided at the bottom end of the mechanism box 1 for installation on a mounting frame 12 of outdoor equipment such as a utility pole. A plug 13 is elastically plugged on the foot 11, one end of the plug 13 is connected to a connecting rope 14, one end of the connecting rope 14 is inserted into the hollow cylinder 6 and connected to the movable plate 9, and a socket 120 for the plug 13 to pass through is provided on the mounting frame 12. Considering that the circuit breaker is generally placed directly on the table for storage and transportation, a hook 100 is provided at the top of the mechanism box 1 of the circuit breaker. During installation, the hook 100 is connected by a crane to lift the circuit breaker onto the mounting frame 12, and the bottom of the mechanism box 1 contacts the table or the mounting frame 12. Figure 2 As shown, the latch 13 is pressed upward by its own gravity. At this time, the movable plate 9 moves inward horizontally to make the through slot 82 in a closed state, which is used to block the cross bar 7 from moving upward, that is, the moving contact 5 cannot move upward to perform the closing action. When the mechanism box 1 is installed in place along the mounting frame 12, as shown in FIG. Figure 1 , Figure 3 , Figure 4 As shown, the latch 13 pops up downward along the socket 120, and the movable plate 9 is pulled outward and moved horizontally by the connecting rope 14. At this time, the through slot 82 is in an open state, and the movable contact 5 moves up to contact the fixed contact 4 to complete the closing of the circuit breaker, so that the latch 13 plays a protective role in limiting the position of the socket 120 during installation, and limiting the closing of the circuit breaker during storage and transportation or when it is not installed in place. Among them, the hollow cylinder 6 can be connected to the vacuum extraction equipment in the mechanism box 1 through an air pipe, such as the existing conventional vacuum pump. When the circuit breaker is closed and energized, the vacuum pump and other equipment automatically evacuates the air in the hollow cylinder 6. Since the hollow cylinder 6 is not large in size and the vacuum degree requirement is not high, the requirements for the vacuum equipment and its energy consumption are not high. During the normal closing operation of the circuit breaker, the hollow cylinder 6 maintains a certain vacuum degree, which is also beneficial to suppress the heat convection and heat conduction of the air and reduce heat transfer, and has a certain insulation effect. Only after closing the circuit breaker and moving it down to open the circuit breaker, as shown in FIG. Fig.11As shown, the heat exchange plate 10 is driven to move outward horizontally, and high temperature is formed in the vacuum arc chamber 3 when the switch is opened. On the one hand, the high temperature in the vacuum arc chamber 3 is efficiently dispersed and heat-conducted through the hollow tube 6 and the lower part of the insulating tube 2, and is efficiently heat-conducted with the outside through the extended heat exchange plate 10, thereby increasing the heat dissipation area. On the other hand, since the air inlet 102 passes through the outside of the insulating tube 2 with the heat exchange plate 10, the outside air quickly flows into the hollow tube 6 through the air inlet 102, the hollow channel 101, and the air outlet 103, and is ventilated with the hollow tube 6, which is conducive to the outside air to quickly dissipate heat and cool down the hollow tube 6, thereby greatly increasing the dispersed heat dissipation capacity of the insulating tube 2, and avoiding local overheating of the insulating tube 2 and the vacuum arc chamber 3 when the switch is opened, thereby affecting their service life.

[0042] In an embodiment of the present invention, Figure 4 , Figure 5 As shown, the side end of the hollow tube 6 is attached to the inner tube wall of the insulating tube 2, and the top end of the hollow tube 6 is attached to the outer bottom wall of the vacuum arc chamber 3, which is further beneficial for the high temperature in the vacuum arc chamber 3 to be efficiently dispersed and conductively conducted through the hollow tube 6 and the lower part of the insulating tube 2 when the switch is opened.

[0043] In an embodiment of the present invention, Figure 4 , Figure 5 , Fig.11 As shown, the bottom end of the vacuum interrupter 3 is provided with a groove 31 matching the head end of the moving contact 5, and the inner bottom end of the groove 31 is fixed with a first sealing ring 32. When the moving contact 5 moves downward and is in the open state, as shown in FIG. Fig.11 As shown, the head end of the moving contact 5 is embedded in the groove 31 and pressed against the first sealing ring 32, so as to maintain the vacuum degree of the vacuum interrupter 3 when opening the switch. A second sealing ring 33 is fixedly provided on the inner top wall of the hollow cylinder 6. In addition, a second sealing ring 33 can also be fixedly provided on the inner bottom wall of the hollow cylinder 6, which is beneficial to maintain the vacuum degree of the vacuum interrupter 3 and the hollow cylinder 6.

[0044] In an embodiment of the present invention, Figure 4 , Figure 5 , Fig. 9 , Fig.10 , Fig.11 As shown, one end of the heat exchange plate 10 passes through the insulating tube 2 and is connected to a third sealing ring 104. In the initial state, Figure 4 , Figure 5 As shown, the air inlet 102 is located in the insulating cylinder 2 and is pressed against the outer wall of the insulating cylinder 2 through the third sealing ring 104 to maintain the sealing of the hollow cylinder 6.

[0045] Among them, Figure 4 , Figure 5 , Fig. 9 , Fig.10 , Fig.11As shown, the air inlet 102 is designed in a long strip shape perpendicular to the length direction of the hollow channel 101. A plurality of air inlets 102 are arranged at intervals to facilitate air intake and efficient heat dissipation. The air outlet 103 is located at one end of the guide rod portion of the hollow channel 101 facing the moving contact 5.

[0046] In an embodiment of the present invention, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 As shown, a toothed structure is provided on the outer bottom wall of the heat exchange plate 10, an internal gear 15 is rotatably connected in the hollow cylinder 6, the internal gear 15 is meshed and connected with the outer bottom wall of the heat exchange plate 10, and a wire wheel 16 is connected to the side end of the internal gear 15, and a transmission rope 17 is wound around the wire wheel 16, as shown in FIG. Figure 8 As shown, the bottom end of the transmission rope 17 is forked into two strands, and are respectively connected to the two sides of the opening of the through groove 82, and a transverse rope 18 is horizontally connected between the two forked transmission ropes 17. The top of the outer end of the cross bar 7 is designed with an arc-shaped end face. When the moving contact 5 moves upward, the arc-shaped end face of the top of the outer end of the cross bar 7 abuts and passes over the transverse rope 18. When the cross bar 7 moves down with the moving contact 5 to open the switch, the bottom of the outer end of the cross bar 7 abuts and pulls the transverse rope 18 downward, thereby driving the wire wheel 16 and the internal gear 15 to rotate synchronously, and the heat exchange plate 10 is driven to move outward laterally through the internal gear 15, so that the air inlet 102 passes through the outside of the insulating tube, thereby realizing the function of driving the heat exchange plate 10 to move outward laterally to dissipate heat only after closing the switch and then moving down to open the switch.

[0047] As another optional embodiment of the present invention, Fig.12 , Fig.13 , Fig.14 , Fig.15 , Fig.16 , Fig.17 As shown, a flip rod 71 is attached to the bottom of the outer end of the cross bar 7, and the outer end of the flip rod 71 is rotatably connected to the bottom of the cross bar 7 through a rotating shaft, and a thin rod 72 is connected to the outer end of the rotating shaft, wherein the rotating shaft can be provided with an elastic component such as a torsion spring to drive the flip rod 71 to rotate to an initial state attached to the bottom end of the cross bar 7, and the bottom end of the movable plate 9 is connected to a connecting rod 91, wherein the connecting rod 91 is vertically fixedly connected to the bottom end of the movable plate 9 facing the through-hole 81, and the connecting rod 91 is located beside the cross bar 7, that is, at the corresponding position of the flip rod 71. After closing the switch, when it moves down to open the switch, as shown in FIG. Fig.12 , Fig.13As shown, the transverse rope 18 abuts against the bottom end of the turning rod 71. At this time, if it is necessary to close the circuit again, the moving contact 5 can be moved up to close the circuit. Specifically, an elastic component such as a torsion spring can be provided at the connection of the internal gear 15, or an elastic component such as a spring can be connected between the heat exchange plate 10 and the hollow cylinder 6. When the moving contact 5 is moved up to close the circuit, the internal gear 15 automatically rotates to reset, and the heat exchange plate 10 automatically moves inward to reset. If you want to restore to the state as shown in the figure, Figure 4 In the original state shown in FIG. 1 , the movable plate 9 can be moved inward by pressing the latch 13, thereby driving the connecting rod 91 to move inward synchronously, until the connecting rod 91 pushes the thin rod 72 and drives the rotating shaft to rotate. Fig.14 , Fig.15 As shown, the turning rod 71 rotates synchronously with the rotating shaft to drive the transverse rope 18 to separate from the transverse rod 7, and the connecting rod 91 continues to move inward with the movable plate 9 until the through groove 82 is in a closed state, as shown in FIG. Fig.16 , Fig.17 As shown, it is used to prevent the cross bar 7 from moving upward.

[0048] One end of the thin rod 72 can be elastically connected to the outside of the rotating shaft, for example Fig.17 In the embodiment, the bottom end of the thin rod 72 can be elastically extended and retracted along the axial direction of the rotating shaft, and the cross section of the connecting rod 91 is as follows: Fig.18 As shown, the side facing the through-hole 81 is designed as a plane, and the side away from the through-hole 81 is designed as a curved surface or an inclined end surface, so that when the movable plate 9 moves inward, the thin rod 72 is pushed by the flat side of the connecting rod 91, and the rotating shaft is driven to rotate synchronously, and when the movable plate 9 moves outward, the thin rod 72 is pushed in the opposite direction by the curved surface or the inclined end surface of the connecting rod 91. At this time, the thin rod 72 elastically extends along the axial direction of the rotating shaft to pass over the connecting rod 91.

[0049] In an embodiment of the present invention, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the feet 11 are arranged below each insulating cylinder 2 and are designed to be in a long strip shape parallel to the width direction of the mechanism box 1 , so as to stably support the mechanism box 1 .

[0050] In an embodiment of the present invention, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the mounting frame 12 includes a transverse support frame 121 and an inclined support frame 122 fixedly supported at the bottom end of the transverse support frame 121. The transverse support frame 121 is provided with a strip frame 123 matching the anchors 11. The socket 120 is opened on the strip frame 123 and is slidably arranged on the corresponding strip frame 123 through the anchors 11, so as to press the pin 13 upward until the pin 13 slides to the socket 120 and pops out downward along the socket 120.

[0051] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

Claims

1. An outdoor vacuum circuit breaker mechanism, comprising a mechanism box (1), an insulating cylinder (2) is provided at the top of the mechanism box (1), a vacuum interrupter (3) is provided in the insulating cylinder (2), a fixed contact (4) is provided in the upper part of the vacuum interrupter (3), and a moving contact (5) is movably provided in the lower part of the vacuum interrupter (3), characterized in that: A hollow cylinder (6) is provided at the lower end of the vacuum arc extinguishing chamber (3) in the insulating cylinder (2); the bottom end of the moving contact (5) is sequentially passed through the vacuum arc extinguishing chamber (3) and the outside of the hollow cylinder (6); a cross bar (7) is provided on the end of the moving contact (5) passing through the hollow cylinder (6); a transverse partition (8) is fixedly provided in the hollow cylinder (6); the inner circle of the transverse partition (8) is provided with a through hole (81) for the moving contact (5) to pass through; a through groove (82) is provided near the inner circle of the transverse partition (8); a movable plate (9) is slidably connected to the through groove (82); a heat exchange plate (10) is inserted into the side end of the hollow cylinder (6); a hollow channel (101) is provided in the heat exchange plate (10); one end of the hollow channel (101) is provided with an air inlet (102), and the other end is provided with an air outlet (103); The bottom end of the mechanism box (1) is provided with a foot (11) for installation on an outdoor mounting frame (12). A plug (13) is elastically plugged into the foot (11). One end of the plug (13) is connected to a connecting rope (14). One end of the connecting rope (14) penetrates into the hollow cylinder (6) and is connected to the movable plate (9). The mounting frame (12) is provided with a socket (120) for the plug (13) to penetrate. By pressing the plug (13) upward, the movable plate (9) moves inward horizontally so that the through slot (8) is opened. 2) is in a closed state, used to prevent the cross bar (7) from moving upward. When the mechanism box (1) is installed in place along the mounting frame (12), the latch (13) pops out downward along the socket (120), and pulls the movable plate (9) to move outward through the connecting rope (14). The through groove (82) is in an open state. When the movable contact (5) moves upward to contact the fixed contact (4), after the closing is completed, it moves downward to open the switch, driving the heat exchange plate (10) to move outward, so that the air inlet (102) passes through the outside of the insulating tube (2) and is used for ventilation with the inside of the hollow tube (6).

2. An outdoor vacuum circuit breaker mechanism according to claim 1, characterized in that: The side end of the hollow tube (6) is attached to the inner tube wall of the insulating tube (2), and the top end of the hollow tube (6) is attached to the outer bottom wall of the vacuum arc extinguishing chamber (3).

3. An outdoor vacuum circuit breaker mechanism according to claim 1, characterized in that: The bottom end of the vacuum interrupter (3) is provided with a groove (31) matching the head end of the moving contact (5), and a first sealing ring (32) is fixedly provided at the inner bottom end of the groove (31). When the moving contact (5) moves downward and is in an open state, the head end of the moving contact (5) is embedded in the groove (31) and pressed against the first sealing ring (32), and a second sealing ring (33) is fixedly provided on the inner top wall of the hollow cylinder (6).

4. An outdoor vacuum circuit breaker mechanism according to claim 1, characterized in that: One end of the heat exchange plate (10) passes through the insulating tube (2) and is connected to a third sealing ring (104); in an initial state, the air inlet (102) is located inside the insulating tube (2) and is pressed against the outer wall of the insulating tube (2) through the third sealing ring (104).

5. An outdoor vacuum circuit breaker mechanism according to claim 1, characterized in that: The outer bottom wall of the heat exchange plate (10) is provided with a toothed structure, an internal gear (15) is rotatably connected inside the hollow cylinder (6), the internal gear (15) is meshedly connected with the outer bottom wall of the heat exchange plate (10), a wire wheel (16) is connected to the side end of the internal gear (15), a transmission rope (17) is wound around the wire wheel (16), the bottom end of the transmission rope (17) is forked into two strands, and the two strands are respectively connected to the two sides of the opening of the through groove (82), and a transverse rope (17) is horizontally connected between the two forked transmission ropes (17). 8), the top of the outer end of the cross bar (7) is designed as an arc-shaped end surface. When the moving contact (5) moves upward, the arc-shaped end surface of the top of the outer end of the cross bar (7) abuts against and passes over the transverse rope (18). When the cross bar (7) moves downward with the moving contact (5) to open the switch, the bottom of the outer end of the cross bar (7) abuts against and pulls the transverse rope (18), driving the wire wheel (16) and the internal gear (15) to rotate synchronously, and the heat exchange plate (10) is driven to move outward through the internal gear (15), so that the air inlet (102) passes through the outside of the insulating tube (2).

6. An outdoor vacuum circuit breaker mechanism according to claim 5, characterized in that: A turning rod (71) is attached to the bottom of the outer end of the cross bar (7), and the outer end of the turning rod (71) is rotatably connected to the bottom of the cross bar (7) via a rotating shaft. The outer end of the rotating shaft is connected to a thin rod (72). The bottom end of the movable plate (9) is connected to a connecting rod (91). The movable plate (9) moves inwardly, driving the connecting rod (91) to move synchronously, until the connecting rod (91) pushes against the thin rod (72) and drives the rotating shaft to rotate. The turning rod (71) rotates synchronously with the rotating shaft to drive the transverse rope (18) to separate from the cross bar (7).

7. An outdoor vacuum circuit breaker mechanism according to claim 1, characterized in that: The air inlet (102) is designed in the shape of a long strip perpendicular to the length direction of the hollow channel (101), and a plurality of the air inlets (102) are arranged at intervals.

8. An outdoor vacuum circuit breaker mechanism according to claim 1, characterized in that: The foot (11) is arranged below each insulating cylinder (2) and is designed to be in the shape of a long strip parallel to the width direction of the mechanism box (1).

9. An outdoor vacuum circuit breaker mechanism according to claim 8, characterized in that: The mounting frame (12) comprises a transverse support frame (121) and an oblique support frame (122) fixedly supported at the bottom end of the transverse support frame (121); a strip frame (123) matching each foot (11) is provided on the transverse support frame (121); the socket (120) is opened on the strip frame (123) and is slidably arranged on the corresponding strip frame (123) through the foot (11) for pressing the latch (13) upward until the latch (13) slides to the socket (120) and pops out downward along the socket (120).

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