Magnetic pole mounted circuit breaker integrating primary and secondary equipment

Abstract

The present invention relates to the technical field of circuit breakers, and specifically to a magnetically controlled column-mounted circuit breaker integrating primary and secondary devices, including a column-mounted circuit breaker housing, a magnetically controlled mechanism disposed in the column-mounted circuit breaker housing, and the magnetically controlled mechanism comprising an insulating transmission rod connected to the lower end of a moving contact. When a gate opening operation is required, a servo motor drives a permanent magnet plate to rotate and squeezes an extrusion block through the convex surface of the permanent magnet plate, so that the extrusion block drives a transmission frame to expand to both sides and drives the insulating transmission rod to descend, so that the insulating transmission rod drives the moving contact to break away from contact with a static contact, thereby realizing gate opening, and during the gate opening process, the permanent magnet plate moves at the slope of the ramp plate through the extrusion rod, and the permanent magnet plate simultaneously drives a reset torsion spring through a fixed ring to rotate and store energy, and the magnetic field between the permanent magnet column and the permanent magnet plate changes, so that the permanent magnet column generates a magnetic attraction to the permanent magnet plate, which is convenient for the subsequent rapid reset and rapid closing response speed.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, in particular to a magnetically controlled column-mounted circuit breaker integrating primary and secondary devices. Background Art

[0002] With the rapid development of my country's economy and the continuous increase in power supply, the dependence on electricity is increasing. However, pole-mounted circuit breakers refer to circuit breakers installed and operated on poles. Pole-mounted circuit breakers are often used in the connection, segmentation and branch lines of the power grid to improve the power supply reliability of the power grid.

[0003] For example, patent number CN17476396B discloses a quick operating mechanism for a pole-mounted circuit breaker and the pole-mounted circuit breaker thereof, which solves the problems of complex structure of the traditional spring operating mechanism and high processing and manufacturing cost of the magnetic control mechanism by simplifying the processing and manufacturing process and reducing the cost.

[0004] In the existing pole-mounted circuit breaker design, the separation of primary and secondary equipment leads to complex system structure, high installation and maintenance costs, and low efficiency of coordination between components. Especially in the opening and closing operations of the circuit breaker, the traditional mechanical operating mechanism has problems such as slow response speed, inaccurate action, and easy wear, which affects the stability and reliability of the power system. Summary of the invention

[0005] The purpose of the present invention is to make up for the shortcomings of the prior art and to provide a magnetically controlled pole-mounted circuit breaker that integrates primary and secondary devices. This solution can not only solve the problems of complex structure, cumbersome installation and high failure rate of the spring operating mechanism of the traditional pole-mounted circuit breaker, but also make the opening and closing reactions faster, thereby reducing the response time and achieving fast and reliable opening and closing.

[0006] To solve the above problems, the present invention provides the following technical solutions: a magnetically controlled column-mounted circuit breaker with integrated primary and secondary devices, comprising a column-mounted circuit breaker box, a pole body is arranged on the upper part of the column-mounted circuit breaker box, a pole mechanism is arranged in the pole body, the pole mechanism comprises a static contact and a moving contact directly below the static contact, a magnetic control mechanism is arranged in the column-mounted circuit breaker box, the magnetic control mechanism comprises an insulating transmission rod connected to the lower end of the moving contact, and an output component and a reset component for pushing or pulling the moving contact through the insulating transmission rod, the output component is used to pull the moving contact out of contact with the static contact through the insulating transmission rod; the reset component is used to push the moving contact close to the static contact for quick closing through the insulating transmission rod.

[0007] Furthermore, a current transformer and an output terminal connected to an output end of the current transformer are arranged on one side of the middle part of the pole body, and an input terminal is arranged on the upper part of the pole body.

[0008] The beneficial effect of adopting the above further solution is that by setting a current transformer, the current transformer includes a magnetic core, a coil and an inductor, the coil is wound around the magnetic core, and the inductor senses the electromotive force and converts it into a corresponding electrical signal output to provide reliable measurement data.

[0009] Furthermore, the pole mechanism also includes a vacuum arc extinguishing chamber fixed on the top wall of the pole body, and the outer ends of the static contact and the moving contact slide through the reserved holes in the vacuum arc extinguishing chamber and extend to the outside of the vacuum arc extinguishing chamber; the vacuum arc extinguishing chamber is used to quickly extinguish the vacuum arc generated when the static contact and the moving contact are closed or opened and to suppress the current.

[0010] The beneficial effect of adopting the above further scheme is that by setting up a vacuum arc extinguishing chamber, the shell of the vacuum arc extinguishing chamber adopts an airtight insulating shell made of glass or ceramic. Through the excellent insulation of the vacuum in the tube, the medium and high voltage circuit can quickly extinguish the arc and suppress the current after the power is cut off, thereby avoiding accidents and unexpected events.

[0011] Furthermore, the pole mechanism also includes a conductive rod that passes through the current transformer, the outer end of the conductive rod is connected to the output terminal, a connecting soft wire is arranged inside the pole body, and the two ends of the connecting soft wire are respectively connected to the conductive rod and the moving contact; the outer surface of the insulating transmission rod is sleeved with an insulating protective tube, and the pole mechanism also includes an adjusting ring sleeved on the outer surface of the insulating transmission rod, and an overtravel spring sleeved on the outer surface of the insulating transmission rod and located between the insulating protective tube and the adjusting ring.

[0012] The beneficial effect of adopting the above further solution is that the transmission of current is facilitated by providing a conductive rod, and the current is transmitted to the moving contact through the connecting cord, so that the current can be transmitted when the moving contact and the static contact are closed.

[0013] Furthermore, the lower end of the insulating transmission rod sequentially passes through the pole body and the pole-mounted circuit breaker box and extends to the interior of the pole-mounted circuit breaker box. The output assembly includes a push plate connected to the lower end of the insulating transmission rod, and two sets of transmission frames hinged to the push plate. The lower end of the transmission frame is hinged with a guide rod, and an extrusion block fixedly connected to the guide rod and located between the two transmission frames. The output assembly also includes a limit groove fixedly connected to the inner wall of the pole-mounted circuit breaker box and slidably matched with the outer end of the guide rod. The output assembly also includes a driving assembly for pushing the extrusion block.

[0014] The beneficial effect of adopting the above further scheme is that by setting a push plate and squeezing the extrusion block through the driving assembly, the extrusion block can be guided and limited by the guide rod and the limit groove to enable the transmission frame to extend or contract to both sides, thereby driving the push plate to move up and down and driving the insulating transmission rod and the moving contact to move up and down, thereby realizing opening and closing of the switch.

[0015] Furthermore, the drive assembly includes a servo motor arranged in a column-mounted circuit breaker box; a permanent magnet column is arranged at the output end of the servo motor, and a permanent magnet plate is arranged outside the permanent magnet column, which can rotate synchronously with the permanent magnet column and slide axially relative to the permanent magnet column; a fixing ring is arranged at the bottom of the permanent magnet plate; and a reset torsion spring is also arranged outside the permanent magnet column, with its two ends respectively connected to the fixing ring and the servo motor.

[0016] The beneficial effect of adopting the above further scheme is that by setting a servo motor, the output shaft of the servo motor drives the permanent magnet plate to rotate, so that the curved convex plates on both sides of the permanent magnet plate squeeze the extrusion blocks on both sides, thereby causing the extrusion blocks to expand to both sides, and then drive the push plate and the insulating transmission rod to move downward through the transmission frame to realize the operation of opening the gate.

[0017] Furthermore, the reset assembly includes an extrusion rod fixed on the upper surface of the permanent magnet plate, and the reset assembly also includes a fixing plate fixed on the inner wall of the column-mounted circuit breaker box, and the bottom surface of the fixing plate is provided with a ramp plate for guiding the extrusion rod.

[0018] The beneficial effect of adopting the above further scheme is that by setting an extrusion rod, the extrusion rod drives the extrusion rod to rotate synchronously when the permanent magnet plate rotates to open the gate, so that the extrusion rod moves at the ramp plate, and the extrusion rod is squeezed by the ramp plate, thereby pushing the permanent magnet plate to move downward slightly, thereby providing a slope sliding force for the subsequent resetting of the permanent magnet plate, thereby further improving the response speed when closing the gate, and avoiding the slow resetting of the permanent magnet plate affecting the response speed of closing the gate.

[0019] Furthermore, the reset assembly also includes a mounting shaft connected between the two transmission frames, a retractable spring rod is installed between the two mounting shafts, and the retractable spring rod is used to push the insulating transmission rod up by pulling the transmission frames on both sides.

[0020] The beneficial effect of adopting the above further scheme is that by setting the installation shaft and the retractable spring rod, it is possible to pull and reset the transmission frames on both sides through the retractable and elastic resetting effect of the retractable spring rod itself when closing the switch, thereby greatly improving the response speed when closing the switch.

[0021] Furthermore, an overtravel adjustment mechanism is provided in the pole-mounted circuit breaker box, and the overtravel adjustment mechanism includes a sealing gasket ring arranged on the bottom surface of the pole body, and a fixing part fixed to the top wall of the pole-mounted circuit breaker box. The overtravel adjustment mechanism also includes an adjustment rod connected to the adjustment ring and sequentially passing through the pole body, the sealing gasket ring and the pole-mounted circuit breaker box. The outer surface of the adjustment rod is slidably matched with the fixing part. The outer surface of the fixing part is provided with a thread line and a screw ring threadedly matched with the thread line. The sealing gasket ring and the fixing part are both slidably connected with the insulating transmission rod.

[0022] The beneficial effect of adopting the above-mentioned further scheme is that, by setting the screw ring, the screw ring can be manually rotated so that the screw ring squeezes the adjusting rod when it is raised or lowered, thereby raising or lowering the adjusting rod. When the adjusting rod is raised or lowered, the overtravel spring can be squeezed through the adjusting ring, thereby adjusting the elastic force of the overtravel spring, which can make the moving contact and the static contact in close contact, avoiding the formation of gaps between the contacts that affect the current transmission after closing.

[0023] Furthermore, a display assembly is provided on the outer surface of the pole-mounted circuit breaker box, and the display assembly includes an opening and closing indicator plate fixed on the outer surface of the pole-mounted circuit breaker box, and an opening and closing pointer matched with the opening and closing indicator plate. The display assembly also includes an opening and closing connecting shaft connected to the opening and closing pointer and rotatingly passing through the pole-mounted circuit breaker box, and the outer end of the opening and closing connecting shaft is fixedly connected to a U-shaped groove transmission plate. The display assembly also includes a transmission rod fixedly connected to the outer surface of the push plate and located in the guide groove of the U-shaped groove transmission plate.

[0024] The beneficial effect of adopting the above further scheme is that by setting the opening and closing pointer and the opening and closing indicator board, the position of the opening and closing pointer in two areas of the opening and closing indicator board can be used to facilitate the staff to observe the opening and closing status of the circuit breaker, which is convenient for intuitive observation.

[0025] Compared with the prior art, the magnetically controlled column-mounted circuit breaker integrating primary and secondary equipment has the following beneficial effects:

[0026] 1. The present invention provides a magnetic control mechanism, etc., and when a tripping operation is required, the servo motor is started, and the output shaft of the servo motor drives the permanent magnet plate to rotate. When the permanent magnet plate rotates, the convex surface thereof squeezes the extrusion block, so that the extrusion block drives the transmission frame to expand to both sides, and the push plate drives the insulating transmission rod to descend, so that the insulating transmission rod can drive the moving contact to break away from the contact with the static contact, thereby realizing tripping. In the tripping process, the permanent magnet plate moves on the slope of the ramp plate through the extrusion rod, and the permanent magnet plate simultaneously drives the reset torsion spring to rotate and store energy through the fixed ring, and the magnetic field between the permanent magnet column and the permanent magnet plate changes, so that the permanent magnet column generates a magnetic attraction to the permanent magnet plate, which is convenient for the subsequent rapid reset and rapid closing response speed.

[0027] 2. When the present invention is closing the circuit, the servo motor is turned off, the permanent magnet plate stops rotating, and the permanent magnet plate can be quickly reset through the magnetic attraction of the permanent magnet column and the energy release of the reset torsion spring, as well as the inclined driving force of the extrusion rod and the ramp plate, thereby releasing the push on the extrusion block, resetting the extrusion block, and driving the moving contact to contact the static contact through the insulating transmission rod, thereby achieving rapid closing.

[0028] 3. The present invention sets a pole mechanism, etc., and when performing a closing operation, firstly, the insulating transmission rod is pushed up by the magnetic control mechanism, so that the insulating transmission rod pushes the moving contact to rise in the vacuum arc extinguishing chamber, and the moving contact approaches the static contact during the rising process. As the moving contact approaches the static contact, the current shrinks to a point where the contact just approaches. At this time, the resistance increases sharply and the temperature rises rapidly. Metal vapor evaporates from the contact surface at high temperature, resulting in extremely strong gap breakdown and generating a vacuum arc, which is then quickly extinguished and the current is suppressed by the vacuum arc extinguishing chamber. The working principle is the same when opening the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall device of the present invention;

[0030] Figure 2 It is a partial cross-sectional view of the three-dimensional structure of the overall device of the present invention;

[0031] Figure 3 It is a partial cross-sectional view of the three-dimensional structure of the pole mechanism of the present invention;

[0032] Figure 4 It is a partial cross-sectional view of the three-dimensional structure of the current transformer of the present invention;

[0033] Figure 5 It is a three-dimensional structural cross-sectional view of the magnetron mechanism of the present invention;

[0034] Figure 6 It is a schematic diagram of the three-dimensional structure of the magnetron mechanism of the present invention;

[0035] Figure 7 It is a schematic diagram of the three-dimensional structure of the permanent magnetic column of the present invention;

[0036] Figure 8 For the present invention Figure 5 A local enlarged schematic diagram of point A in the middle.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] 1. Pole-mounted circuit breaker box; 2. Pole body; 3. Current transformer; 4. Outgoing terminal; 5. Incoming terminal; 6. Magnetic control mechanism; 601. Insulated transmission rod; 602. Push plate; 603. Transmission frame; 604. Guide rod; 605. Extrusion block; 606. Limiting groove; 607. Servo motor; 608. Permanent magnetic column; 609. Permanent magnetic plate; 6010. Reset torsion spring; 6011. Fixed ring; 6012. Extrusion rod; 6013. Fixed plate; 6014. Ramp plate; 6015. Installation shaft; 601 6. Retractable spring rod; 7. Pole mechanism; 701. Vacuum interrupter; 702. Static contact; 703. Moving contact; 704. Conductive rod; 705. Connecting cord; 706. Insulating protective tube; 707. Adjusting ring; 708. Overtravel spring; 8. Overtravel adjusting mechanism; 801. Sealing gasket; 802. Fixing piece; 803. Adjusting rod; 804. Threaded wire; 805. Screw ring; 9. Opening and closing indicator plate; 10. Opening and closing pointer; 11. Opening and closing connecting shaft; 12. U-groove transmission plate; 13. Transmission rod. DETAILED DESCRIPTION

[0039] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0040] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For ordinary technicians in this field, the specific meanings of such terms in this patent can be understood according to specific circumstances.

[0041] As described in the background technology, the spring operating mechanism has a high failure rate and a long response time. For this reason, this embodiment provides a magnetically controlled pole-mounted circuit breaker that integrates primary and secondary devices. The device can solve the problems of complex structure, cumbersome installation and high failure rate of the spring operating mechanism of traditional pole-mounted circuit breakers, and can also make the opening and closing reactions faster, thereby reducing the response time and achieving fast and reliable opening and closing.

[0042] See also Figure 1-Figure 8 This embodiment proposes a magnetically controlled pole-mounted circuit breaker with integrated primary and secondary devices, including a pole-mounted circuit breaker box 1, a pole body 2 is arranged on the upper part of the pole-mounted circuit breaker box 1, a pole mechanism 7 is arranged in the pole body 2, and the pole mechanism 7 includes a static contact 702 and a moving contact 703 directly below the static contact 702.

[0043] When performing a closing operation, firstly, the subsequent driving mechanism is started to push the moving contact 703 upward so that the moving contact 703 approaches the stationary contact 702 while rising. As the moving contact 703 approaches the stationary contact 702, the current shrinks to the point where the contact just approaches.

[0044] At this time, the resistance increases dramatically and the temperature rises rapidly. The contact surface evaporates metal vapor at high temperature, resulting in extremely strong gap breakdown and generating a vacuum arc. This is a prior art, so I will not go into details. The vacuum arc is then quickly extinguished and the current is suppressed through the vacuum arc extinguishing chamber 701. The working principle is the same when the switch is opened.

[0045] A current transformer 3 and an output terminal 4 connected to the output end of the current transformer 3 are arranged on one side of the middle of the pole body 2 , and an input terminal 5 is arranged on the upper part of the pole body 2 .

[0046] In this embodiment, a current transformer 3 is provided, the current transformer 3 includes a magnetic core, a coil and an inductor, the coil is wound around the magnetic core, the inductor senses the electromotive force and converts it into a corresponding electrical signal output to provide reliable measurement data, and the output terminal 4 and the input terminal 5 are used for line connection and transmission.

[0047] As an embodiment, the pole mechanism 7 also includes a vacuum arc extinguishing chamber 701 fixed on the inner top wall of the pole body 2, and the outer ends of the static contact 702 and the moving contact 703 slide through the reserved holes in the vacuum arc extinguishing chamber 701 and extend to the outside of the vacuum arc extinguishing chamber 701; the vacuum arc extinguishing chamber 701 is used to quickly extinguish the vacuum arc generated when the static contact 702 and the moving contact 703 are closed or opened and to suppress the current.

[0048] In this embodiment, a vacuum arc extinguishing chamber 701 is provided, and the outer shell of the vacuum arc extinguishing chamber 701 is an airtight insulating shell made of glass or ceramic. The excellent insulation of the vacuum in the tube allows the medium and high voltage circuits to quickly extinguish arcs and suppress current after the power is cut off, thereby avoiding accidents and unexpected events. The static contact 702 and the moving contact 703 will generate an arc when they are released or separated, so that the generated arc is quickly extinguished and the generation of current is suppressed through the vacuum arc extinguishing chamber 701.

[0049] As an embodiment, a magnetic control mechanism 6 is provided in the pole-mounted circuit breaker box 1, and the magnetic control mechanism 6 includes an insulating transmission rod 601 connected to the lower end of the moving contact 703, and an output component and a reset component used to push or pull the moving contact 703 through the insulating transmission rod 601. The output component is used to pull the moving contact 703 out of contact with the static contact 702 through the insulating transmission rod 601; the reset component is used to push the moving contact 703 to close to the static contact 702 for quick closing through the insulating transmission rod 601.

[0050] By setting the reset component and the output component, a unique driving method can be used to pull the moving contact 703 down through the insulating transmission rod 601 when opening the circuit breaker, so that the moving contact 703 is separated from the static contact 702, thereby realizing the opening operation.

[0051] During the closing operation, it is only necessary to turn off the driving device. Through the unique reset component, the linkage of multiple resets can enable the insulating transmission rod 601 to quickly push the moving contact 703 upward, so that the moving contact 703 can be in close contact with the static contact 702. Multiple reset push methods can continuously keep the moving contact 703 in close contact with the static contact 702, avoiding the risk of the moving contact 703 and the static contact 702 separating autonomously for a long time.

[0052] As an embodiment, the pole mechanism 7 also includes a conductive rod 704 that passes through the current transformer 3, the outer end of the conductive rod 704 is connected to the output terminal 4, and a connecting soft wire 705 is arranged inside the pole body 2, and the two ends of the connecting soft wire 705 are respectively connected to the conductive rod 704 and the moving contact 703; the outer surface of the insulating transmission rod 601 is sleeved with an insulating protective tube 706, and the pole mechanism 7 also includes an adjusting ring 707 sleeved on the outer surface of the insulating transmission rod 601, and an overtravel spring 708 sleeved on the outer surface of the insulating transmission rod 601 and located between the insulating protective tube 706 and the adjusting ring 707.

[0053] In this embodiment, the transmission of current is facilitated by providing a conductive rod 704, and the current is transmitted to the moving contact 703 through the connecting cord 705, so that the current can be transmitted when the moving contact 703 and the static contact 702 are closed.

[0054] The insulating protection tube 706 is mainly provided to protect the insulating transmission rod 601 to prevent the insulating transmission rod 601 from being damaged by electric current. The overtravel spring 708 can ensure the contact pressure after the static contact 702 contacts the moving contact 703, thereby ensuring good contact of the switch.

[0055] In addition, the lower end of the insulating transmission rod 601 passes through the pole body 2 and the pole-mounted circuit breaker box 1 in sequence and extends to the interior of the pole-mounted circuit breaker box 1. The output component includes a push plate 602 connected to the lower end of the insulating transmission rod 601, and two sets of transmission frames 603 hinged to the push plate 602. The lower end of the transmission frame 603 is hinged with a guide rod 604, and an extrusion block 605 fixedly connected to the guide rod 604 and located between the two transmission frames 603. The output component also includes a limit groove 606 fixedly connected to the inner side wall of the pole-mounted circuit breaker box 1 and slidably matched with the outer end of the guide rod 604. The output component also includes a driving component for pushing the extrusion block 605.

[0056] The beneficial effect of adopting the above further scheme is that by setting the push plate 602 and squeezing the extrusion block 605 through the driving component, the extrusion block 605 can make the transmission frame 603 extend or contract to both sides through the guidance and limitation of the guide rod 604 and the limit groove 606, thereby driving the push plate 602 to move up and down, and then driving the moving contact 703 to move up and down through the insulating transmission rod 601, thereby realizing the contact or separation of the moving contact 703 and the static contact 702, thereby realizing the opening and closing of the switch.

[0057] As an embodiment, the drive assembly includes a servo motor 607 arranged in a pole-mounted circuit breaker box 1; a permanent magnet column 608 is arranged at the output end of the servo motor 607, and a permanent magnet plate 609 is arranged on the outer sleeve of the permanent magnet column 608, which can rotate synchronously with the permanent magnet column 608 and slide axially relative to the permanent magnet column 608; a fixing ring 6011 is arranged at the bottom of the permanent magnet plate 609; the permanent magnet column 608 is also provided with a reset torsion spring 6010, whose two ends are respectively connected to the fixing ring 6011 and the servo motor 607.

[0058] In one embodiment, a plurality of clamping strips are arranged relatively on the output end of the servo motor 607, and a plurality of clamping slots matched with the clamping strips are opened inside the permanent magnet plate 609. Through the cooperation between the clamping slots and the clamping strips, the permanent magnet plate 609 can slide axially along the output end of the servo motor 607, and the circumferential direction of the output end of the servo motor 607 is in a locked state through the cooperation between the clamping strips and the clamping slots, so that the permanent magnet plate 609 can rotate synchronously with the permanent magnet column 608.

[0059] In this embodiment, a servo motor 607 is provided, and the output shaft of the servo motor 607 drives the permanent magnet plate 609 to rotate, so that the curved convex plates on both sides of the permanent magnet plate 609 squeeze the extrusion blocks 605 on both sides, thereby causing the extrusion blocks 605 to expand to both sides, and then drive the push plate 602 and the insulating transmission rod 601 to move downward through the transmission frame 603, thereby realizing the operation of opening the gate.

[0060] When the switch is closed, the servo motor 607 is turned off, and the permanent magnet column 608 is located on one side of the output surface of the servo motor 607. The permanent magnet column 608 can magnetically attract and reset the permanent magnet plate 609 through the magnetic attraction between the permanent magnet column 608 and the permanent magnet plate 609, and the energy stored in the reset torsion spring 6010 when the switch is opened can provide a reset force when the permanent magnet plate 609 is reset, so that the permanent magnet plate 609 can be quickly pulled back to the initial position, so that the permanent magnet plate 609 releases the squeeze on the squeeze block 605.

[0061] The extrusion block 605 is pulled back to its original position through the subsequent resetting assembly, so that the insulating transmission rod 601 and the moving contact 703 can be quickly raised, and through the internal parts of the pole mechanism 7, the moving contact 703 can be quickly and closely contacted with the static contact 702, thereby achieving a stable and reliable closing effect.

[0062] The reset assembly includes an extrusion rod 6012 fixed on the upper surface of the permanent magnet plate 609 , and the reset assembly also includes a fixing plate 6013 fixed on the inner wall of the column-mounted circuit breaker box 1 , and a ramp plate 6014 for guiding the extrusion rod 6012 is provided on the bottom surface of the fixing plate 6013 .

[0063] As an implementation mode, by setting an extrusion rod 6012, the extrusion rod 6012 drives the extrusion rod 6012 to rotate synchronously when the permanent magnet plate 609 rotates to open the gate, so that the extrusion rod 6012 moves at the ramp plate 6014, so that the extrusion rod 6012 is squeezed by the ramp plate 6014, thereby pushing the permanent magnet plate 609 to move slightly downward.

[0064] In addition, during the opening process, when the extrusion rod 6012 slides along the bottom of the slope plate 6014 to the top of the slope, it stops, and the opening is completed; when closing the switch, the extrusion rod 6012 will slide along the top of the slope plate 6014 to the bottom of the slope until the extrusion rod 6012 is stuck with one side of the slope plate 6014, and the closing is completed.

[0065] This provides a sloped sliding force for the subsequent resetting of the permanent magnet plate 609, thereby further improving the response speed when closing the switch, and preventing the slow resetting of the permanent magnet plate 609 from affecting the response speed of closing the switch.

[0066] In this embodiment, the reset assembly also includes a mounting shaft 6015 connected between the two transmission frames 603, and a retractable spring rod 6016 is installed between the two mounting shafts 6015. The retractable spring rod 6016 is used to push the insulating transmission rod 601 up by pulling the transmission frames 603 on both sides.

[0067] As an implementation mode, by providing the mounting shaft 6015 and the retractable spring rod 6016, the transmission frames 603 on both sides can be pulled and reset by the retractable and elastic reset effect of the retractable spring rod 6016 itself when the switch is closed.

[0068] This can provide a rebound force when the push plate 602 drives the insulating transmission rod 601 to rise, thereby further improving the push of the insulating transmission rod 601 on the moving contact 703, greatly improving the response speed when closing the switch.

[0069] In this embodiment, an overtravel adjustment mechanism 8 is arranged in the pole-mounted circuit breaker box 1, and the overtravel adjustment mechanism 8 includes a sealing gasket 801 arranged on the bottom surface of the pole body 2, and a fixing member 802 fixed to the inner top wall of the pole-mounted circuit breaker box 1. The overtravel adjustment mechanism 8 also includes an adjustment rod 803 connected to the adjustment ring 707 and sequentially passing through the pole body 2, the sealing gasket 801 and the pole-mounted circuit breaker box 1. The outer surface of the adjustment rod 803 is slidably matched with the fixing member 802. The outer surface of the fixing member 802 is provided with a thread line 804 and a screw ring 805 threadedly matched with the thread line 804. The sealing gasket 801 and the fixing member 802 are both slidably connected with the insulating transmission rod 601.

[0070] As an implementation mode, by setting a sealing gasket ring 801, the sealing performance between the pole body 2 and the pole-mounted circuit breaker box 1 can be better improved. The setting of the screw ring 805 is to manually rotate the screw ring 805, and the screw ring 805 is threadedly raised and lowered at the thread line 804, so that the screw ring 805 squeezes the adjusting rod 803 when lifting and lowering, so that the adjusting rod 803 is raised and lowered.

[0071] When the adjusting rod 803 is raised or lowered, the overtravel spring 708 can be squeezed by the adjusting ring 707, so as to adjust the elastic force of the overtravel spring 708, and then the pushing force of the overtravel spring 708 on the moving contact 703 can be adjusted, so that the moving contact 703 and the static contact 702 can be in close contact, avoiding the generation of a gap between the contacts that affects the current transmission after closing.

[0072] As an embodiment, a display component is provided on the outer surface of the pole-mounted circuit breaker box 1, and the display component includes an opening and closing indicator plate 9 fixed on the outer surface of the pole-mounted circuit breaker box 1, and an opening and closing pointer 10 matched with the opening and closing indicator plate 9. The display component also includes an opening and closing connecting shaft 11 connected to the opening and closing pointer 10 and rotatingly passing through the pole-mounted circuit breaker box 1, and the outer end of the opening and closing connecting shaft 11 is fixedly connected to a U-shaped groove transmission plate 12. The display component also includes a transmission rod 13 fixedly connected to the outer surface of the push plate 602 and located in the guide groove of the U-shaped groove transmission plate 12.

[0073] In this embodiment, by setting a transmission rod 13, the static contact 702 can drive the transmission rod 13 to rise and fall synchronously when it is raised or lowered, so that the transmission rod 13 can drive the U-groove transmission plate 12 to swing, and the U-groove transmission plate 12 drives the opening and closing pointer 10 to rotate through the opening and closing connecting shaft 11, and then the opening and closing pointer 10 can swing in the two areas of the opening and closing indicator sign 9, so that the staff can observe the opening and closing status of the circuit breaker conveniently and intuitively.

[0074] The working principle of the present invention is as follows:

[0075] In actual application, the pole-mounted circuit breaker box 1 is first installed on the power system or power equipment, connected to the current transformer 3 through external equipment for testing and debugging, and then the entire device is put into actual use.

[0076] When connecting the circuit, the opening operation is performed first. First, the servo motor 607 is started. The output shaft of the servo motor 607 drives the permanent magnet plate 609 to rotate, so that the convex plates on both sides of the permanent magnet plate 609 squeeze the extrusion block 605 during the rotation, so that the extrusion blocks 605 on both sides move outward, thereby pulling the push plate 602 down through the transmission frame 603, and the push plate 602 drives the insulating transmission rod 601 to synchronously descend during the descent process, and then the insulating transmission rod 601 pulls the moving contact 703 to separate the moving contact 703 from the static contact 702, thereby realizing the opening operation, so that the line is connected through the outlet terminal 4 and the input terminal 5. When the opening operation is required after the line is connected, the operation steps are the same.

[0077] When performing the closing operation, the servo motor 607 is turned off, and the servo motor 607 releases the drive to the permanent magnet plate 609. When the permanent magnet plate 609 rotates during the opening operation, it can drive the reset torsion spring 6010 to store energy, and the magnetic fields of the permanent magnet column 608 and the permanent magnet plate 609 change, so that the permanent magnet column 608 has a magnetic attraction to the permanent magnet plate 609, and the permanent magnet plate 609 rotates during the rotation process through the rotation of the extrusion rod 6012, and the extrusion rod 6012 squeezes the ramp plate 6014, which can make the permanent magnet plate 609 move down slightly, and provide a slight reset effect through the slope of the ramp plate 6014.

[0078] When the transmission frame 603 is in the opening movement, it can stretch the retractable spring rod 6016, and the elastic reset force provided by the retractable spring rod 6016 can enable the closing servo motor 607 to pull the permanent magnet plate 609 to quickly reset to the initial position during the closing operation through the transmission of the above-mentioned multiple reset effects, and at the same time pull the transmission frames 603 on both sides to reset, so that the transmission frame 603 pushes the pushing plate 602 to rise, thereby driving the insulating transmission rod 601 to push the moving contact 703 upward through the pushing plate 602, so that the moving contact 703 is in contact with the static contact 702, so that the closing operation can be quickly realized, the response rate is greatly improved, and the response time during closing is reduced.

[0079] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0080] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A magnetically controlled column mounted circuit breaker integrating primary and secondary equipment, characterized in that: The invention comprises a pole-mounted circuit breaker box (1), wherein a pole body (2) is arranged at the upper part of the pole-mounted circuit breaker box (1), a pole mechanism (7) is arranged in the pole body (2), the pole mechanism (7) comprises a stationary contact (702), and a moving contact (703) directly below the stationary contact (702), a magnetic control mechanism (6) is arranged in the pole-mounted circuit breaker box (1), the magnetic control mechanism (6) comprises an insulating transmission rod (601) connected to the lower end of the moving contact (703), and an output component and a reset component for pushing or pulling the moving contact (703) through the insulating transmission rod (601), the output component is used to pull the moving contact (703) out of contact with the stationary contact (702) through the insulating transmission rod (601) to achieve a quick closing; and the reset component is used to push the moving contact (703) close to the stationary contact (702) through the insulating transmission rod (601); The lower end of the insulating transmission rod (601) sequentially passes through the pole body (2) and the pole-mounted circuit breaker box (1) and extends to the interior of the pole-mounted circuit breaker box (1); the output assembly comprises a push plate (602) connected to the lower end of the insulating transmission rod (601), and two sets of transmission frames (603) hinged to the push plate (602); the lower ends of the transmission frames (603) are hinged with guide rods (604), and an extrusion block (605) fixedly connected to the guide rods (604) and located between the two transmission frames (603); the output assembly further comprises a limit groove (606) fixedly connected to the inner side wall of the pole-mounted circuit breaker box (1) and slidably engaged with the outer end of the guide rod (604); and the output assembly further comprises a drive assembly for pushing the extrusion block (605); The drive assembly comprises a servo motor (607) arranged in a column-mounted circuit breaker box (1); a permanent magnet column (608) is arranged at the output end of the servo motor (607); a permanent magnet plate (609) is arranged on the outer sleeve of the permanent magnet column (608) and can rotate synchronously with the permanent magnet column (608) and slide axially relative to the permanent magnet column (608); a fixing ring (6011) is arranged at the bottom of the permanent magnet plate (609); and a reset torsion spring (6010) is also arranged on the outer sleeve of the permanent magnet column (608) and the two ends of the reset torsion spring are respectively connected to the fixing ring (6011) and the servo motor (607).

2. The magnetically controlled column mounted circuit breaker with integrated primary and secondary devices according to claim 1, characterized in that: A current transformer (3) and an output terminal (4) connected to the output end of the current transformer (3) are arranged on one side of the middle of the pole body (2), and an input terminal (5) is arranged on the upper part of the pole body (2).

3. The magnetically controlled column mounted circuit breaker with integrated primary and secondary devices according to claim 2 is characterized in that: The pole mechanism (7) further comprises a vacuum arc extinguishing chamber (701) fixed to the inner top wall of the pole body (2); the outer ends of the static contact (702) and the moving contact (703) slide through the reserved holes in the vacuum arc extinguishing chamber (701) and extend to the outside of the vacuum arc extinguishing chamber (701); the vacuum arc extinguishing chamber (701) is used to quickly extinguish the vacuum arc generated when the static contact (702) and the moving contact (703) are closed or opened and to suppress the current.

4. The magnetically controlled column mounted circuit breaker with integrated primary and secondary devices according to claim 3 is characterized in that: The pole mechanism (7) further comprises a conductive rod (704) which passes through the current transformer (3), the outer end of the conductive rod (704) being connected to the outlet terminal (4), a connecting soft wire (705) being arranged inside the pole body (2), the two ends of the connecting soft wire (705) being respectively connected to the conductive rod (704) and the moving contact (703); an insulating protective tube (706) is sleeved on the outer surface of the insulating transmission rod (601), and the pole mechanism (7) further comprises an adjusting ring (707) sleeved on the outer surface of the insulating transmission rod (601), and an overtravel spring (708) sleeved on the outer surface of the insulating transmission rod (601) and located between the insulating protective tube (706) and the adjusting ring (707).

5. The magnetically controlled column mounted circuit breaker with integrated primary and secondary devices according to claim 1 is characterized in that: The reset assembly comprises an extrusion rod (6012) fixed to the upper surface of the permanent magnet plate (609), and the reset assembly further comprises a fixing plate (6013) fixed to the inner wall of the column-mounted circuit breaker box (1), and a ramp plate (6014) for guiding the extrusion rod (6012) is provided on the bottom surface of the fixing plate (6013).

6. The magnetically controlled column mounted circuit breaker with integrated primary and secondary devices according to claim 1, characterized in that: The reset assembly further comprises a mounting shaft (6015) connected between the two transmission frames (603), a retractable spring rod (6016) being mounted between the two mounting shafts (6015), and the retractable spring rod (6016) is used to push the insulating transmission rod (601) upward by pulling the transmission frames (603) on both sides.

7. The magnetically controlled column mounted circuit breaker with integrated primary and secondary devices according to claim 4 is characterized in that: An overtravel adjustment mechanism (8) is arranged in the pole-mounted circuit breaker box (1), and the overtravel adjustment mechanism (8) comprises a sealing gasket (801) arranged on the bottom surface of the pole body (2), and a fixing member (802) fixed to the top wall of the pole-mounted circuit breaker box (1). The overtravel adjustment mechanism (8) also comprises an adjustment rod (803) connected to the adjustment ring (707) and passing through the pole body (2), the sealing gasket (801) and the pole-mounted circuit breaker box (1) in sequence, the outer surface of the adjustment rod (803) being slidably matched with the fixing member (802), the outer surface of the fixing member (802) being provided with a thread line (804) and a screw ring (805) threadably matched with the thread line (804), and the sealing gasket (801) and the fixing member (802) are both slidably connected to the insulating transmission rod (601).

8. The magnetically controlled column mounted circuit breaker with integrated primary and secondary devices according to claim 1, characterized in that: The outer surface of the column-mounted circuit breaker box (1) is provided with a display assembly, the display assembly comprising an opening and closing indicator plate (9) fixed to the outer surface of the column-mounted circuit breaker box (1), and an opening and closing pointer (10) matched with the opening and closing indicator plate (9), the display assembly also comprising an opening and closing connecting shaft (11) connected to the opening and closing pointer (10) and rotatably passing through the column-mounted circuit breaker box (1), the outer end of the opening and closing connecting shaft (11) being fixedly connected to a U-shaped groove transmission plate (12), and the display assembly also comprising a transmission rod (13) fixedly connected to the outer surface of the push plate (602) and located in a guide groove of the U-shaped groove transmission plate (12).

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