A permanent magnet type primary and secondary fusion complete pole-mounted circuit breaker

Abstract

The application relates to the technical field of circuit breakers, in particular to a permanent-magnetic primary-secondary fusion integrated pole-mounted circuit breaker. The permanent-magnetic primary-secondary fusion integrated pole-mounted circuit breaker comprises a mechanism box composed of a base and a cover frame which is detachably fixed with the base, a plurality of solid-sealed poles are arranged on the top of the cover frame, a current transformer is arranged on the outer side of each solid-sealed pole, a vacuum interrupter is arranged in the solid-sealed pole, a closing and opening mechanism for controlling the opening and closing of a static contact and a moving contact is arranged in the cover frame, a terminal rod is fixedly arranged at one end of the solid-sealed pole and the current transformer, a terminal head is fixedly connected to the end of the terminal rod, a head rainproof assembly for protecting the terminal head is further arranged at the end of the terminal rod, a heat dissipation and bird repelling mechanism for dissipating heat of the terminal head and preventing birds from landing on the terminal head is arranged on the base. The permanent-magnetic primary-secondary fusion integrated pole-mounted circuit breaker can not only prevent rain, birds and dust and dissipate heat in the area where the terminal head is located, but also control the closing and opening of multiple closing and opening mechanisms and the opening of a single closing and opening mechanism.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker technology, specifically a permanent magnet type integrated primary and secondary pole-mounted circuit breaker. Background Technology

[0002] The permanent magnet integrated primary and secondary pole-mounted circuit breaker refers to a circuit breaker that deeply integrates primary and secondary equipment. Its core feature is the use of a permanent magnet operating mechanism to drive the vacuum arc-extinguishing chamber for opening and closing. It combines the arc-extinguishing advantages of vacuum circuit breakers with the stability characteristics of permanent magnet mechanisms. It plays a vital role in the power distribution network, effectively controlling and protecting the distribution network lines, and ensuring the reliability and security of power supply.

[0003] The prior art discloses Chinese Patent No. CN120727505A: a pole-mounted circuit breaker with a protective cover. Specifically, a protective cover is detachably connected to the circuit breaker body, and inspection ports and curtains for covering the inspection ports are provided through the opposite side walls of the protective cover. The circuit breaker body is protected by the protective cover, which significantly improves the operational safety and equipment life. The movable curtains facilitate the operation of the circuit breaker body for maintenance.

[0004] However, the aforementioned existing technology still has certain drawbacks. In use, while directly covering the circuit breaker body with a protective cover can prevent birds from flying to some extent, it makes it difficult for heat to dissipate from the incoming and outgoing terminals. Moreover, the operating space is greatly limited by simply opening the curtain for maintenance. If the protective cover is directly removed, it is not only inconvenient to operate, but there is also the possibility that the protective cover may fall when working at height. Summary of the Invention

[0005] The purpose of this invention is to provide a permanent magnet type integrated primary and secondary pole-mounted circuit breaker to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A permanent magnet type integrated primary and secondary pole-mounted circuit breaker, the integrated primary and secondary pole-mounted circuit breaker comprising:

[0008] The mechanism box consists of a base and a cover frame that is detachably fixed to the base. Multiple solid-sealed poles are fixedly installed on the top of the cover frame. A current transformer is fixedly installed on the outside of each solid-sealed pole. A vacuum interrupter is installed inside the solid-sealed pole. A stationary contact and a moving contact are arranged coaxially inside the vacuum interrupter. A closing and opening mechanism for controlling the opening and closing of the stationary contact and the moving contact is installed inside the cover frame.

[0009] The solid-sealed pole and one end of the current transformer are both fixedly provided with a terminal rod. The end of the terminal rod is fixedly connected to a terminal head, and the end of the terminal rod is also provided with a terminal head rainproof component for protecting the terminal head. The base is provided with a heat dissipation and bird-repelling mechanism for dissipating heat from the terminal head and preventing birds from landing at the terminal head position.

[0010] As a preferred embodiment of the permanent magnet type primary and secondary integrated pole-mounted circuit breaker of the present invention, wherein: the end rainproof assembly includes a cylindrical cover plate and a frustum cover plate rotatably mounted on the outside of the terminal rod and arranged coaxially, a spring is fixedly connected between the cylindrical cover plate and the frustum cover plate and sleeved on the outside of the terminal rod, and two limiting rings for limiting the cylindrical cover plate are fixedly sleeved on the outside of the terminal rod.

[0011] As a preferred embodiment of the permanent magnet type primary and secondary integrated pole-mounted circuit breaker of the present invention, the end rainproof assembly further includes two guide bars fixed to the top of the inner side of the cylindrical cover plate. The bottom end of the guide bar moves through the truncated cone cover plate. The top of the truncated cone cover plate is provided with a vent. Multiple spiral guide vanes evenly distributed in a ring are fixed on the inner side of the truncated cone cover plate. Elastic members opposite to the two guide bars are also fixed on the inner side of the truncated cone cover plate. Clamps are fixed on the opposite ends of the two elastic members.

[0012] As a preferred embodiment of the permanent magnet type primary and secondary integrated pole-mounted circuit breaker of the present invention, the heat dissipation and bird deterrent mechanism includes a slide groove opened on one side of the base, a bent column slidably installed inside the slide groove, a rotatably installed screw and a fixedly installed guide rod inside the slide groove, a secondary gear and a main gear rotatably installed on the base and the side of the cover frame corresponding to the position of the screw, respectively, one end of the screw is fixedly connected to the secondary gear, the secondary gear meshes with the main gear, the screw and the guide rod both movably pass through the bent column, and the bent column is threadedly sleeved on the outside of the screw.

[0013] As a preferred embodiment of the permanent magnet type primary and secondary integrated pole-mounted circuit breaker of the present invention, the heat dissipation and bird deterrent mechanism further includes L-shaped plates fixed at both ends of the outer side of the cover frame, and a straight side frame and an L-shaped side frame are fixedly connected between the corresponding ends of the two L-shaped plates, and an air outlet assembly is fixedly installed on one side of both the straight side frame and the L-shaped side frame.

[0014] As a preferred embodiment of the permanent magnet type primary and secondary integrated pole-mounted circuit breaker of the present invention, the air outlet assembly includes a T-shaped frame and a base plate located directly below the T-shaped frame. The top of the base plate is fixedly provided with a guide post one and a guide post two that movably pass through the T-shaped frame. A spring two is sleeved on the outside of the guide post two and fixedly connects the T-shaped frame and the base plate. A corrugated folded air bag is fixedly connected between the T-shaped frame and the base plate. The guide post two is located inside the corrugated folded air bag. An air inlet pipe and an air outlet pipe directly opposite each terminal head are also connected to the outside of the T-shaped frame.

[0015] As a preferred embodiment of the permanent magnet type primary and secondary integrated pole-mounted circuit breaker of the present invention, the heat dissipation and bird deterrent mechanism further includes T-shaped grooves opened on one side of the L-shaped side frame and on the side of the cover frame near the straight side frame. A sliding seat 1 is slidably installed inside the two T-shaped grooves and is movably sleeved on the outside of the bent column. Guide grooves are opened on both the straight side frame and the L-shaped side frame, and a sliding seat 2 is slidably installed inside the two guide grooves.

[0016] The second slide consists of a sleeve and a top seat that are respectively attached to the two sides of the corresponding side frame, and a connecting column that fixes the sleeve and the top seat. The guide groove consists of multiple straight grooves and V-shaped grooves that are connected, and the straight grooves and V-shaped grooves are alternately arranged.

[0017] As a preferred embodiment of the permanent magnet type primary and secondary integrated pole-mounted circuit breaker of the present invention, the closing and opening mechanism includes a cross groove opened on both ends of the inner cavity of the cover frame and a cross block slidably connected inside the cross groove. A horizontal shaft is fixedly connected between the two cross blocks. The inner cavity of the cover frame is also provided with a mounting plate fixed to one side and a U-shaped hanger fixed to the top. A U-shaped frame is fixedly sleeved on the outside of the horizontal shaft. A permanent magnet operating part is fixedly provided at the bottom of the mounting plate. A transmission component is provided between the permanent magnet operating part and the U-shaped frame.

[0018] As a preferred embodiment of the permanent magnet primary and secondary integrated pole-mounted circuit breaker of the present invention, the transmission assembly includes an I-beam plate movably sleeved in the middle of the U-shaped rod, with through slots opened at both ends of the I-beam plate, and straight rods movably passing through the two through slots. One of the straight rods is fixedly connected to a pull rod fixedly connected to the output end of the permanent magnet operating part in the middle, and the other straight rod is fixedly sleeved with an ear block fixedly connected to the bottom end face of the U-shaped frame in the middle of its outer side.

[0019] As a preferred embodiment of the permanent magnet type primary and secondary integrated pole-mounted circuit breaker of the present invention, wherein: the closing and opening mechanism further includes multiple insulating columns that movably pass through the horizontal axis, and each insulating column is provided with a fixedly sleeved ring disk one, a movably sleeved ring disk two, and a fixedly sleeved ring disk three on its outer side from top to bottom, and a spring three sleeved on the outer side of the insulating column is fixedly connected between the ring disk one and the ring disk two; and two protruding columns whose axis is directly opposite to the axis of the horizontal axis are fixedly provided on the outer side of the ring disk one.

[0020] A ring plate is rotatably mounted on the outer side of the horizontal axis corresponding to the position of each insulating post via a bearing. An arc strip is fixedly connected to the outer side of the ring plate, which is directly opposite to the corresponding protrusion. A toothed ring is fixedly sleeved on the outer side of one end of the ring plate. An electric push rod is fixedly installed on the inner side of the cover frame corresponding to the position of each insulating post. The output end of each electric push rod is fixedly connected to a toothed plate that meshes with the corresponding toothed ring.

[0021] The beneficial effects of this invention are:

[0022] 1. This invention utilizes a top seat that reciprocates horizontally and vertically along a guide groove to intermittently compress the corrugated folded airbag to expel airflow, which is then directed towards the interior of the corresponding frustum cover plate. The spiral guide vanes on the inner side of the frustum cover plate create a spiral airflow, driving the frustum cover plate and the cylindrical cover plate to rotate synchronously. This spiral airflow accelerates the dissipation of heat generated during operation in the terminal head area. Furthermore, the spiraling upward airflow, combined with the airflow expelled along the outer side of the frustum arc plate, prevents dust from accumulating in the terminal head area. Additionally, the cylindrical cover plate, rotating synchronously with the frustum cover plate under the spiral airflow, effectively prevents birds from landing in the terminal head area.

[0023] 2. This invention utilizes a cylindrical cover plate in its natural state to cover the vent on the upper part of the frustum cover plate, and uses the frustum cover plate itself to cover the area where the terminal head is located, preventing rainwater from falling on the terminal head. At the same time, two elastic elements are used to push the clamp to tightly clamp the installed wire, thereby reducing the sway of the wire under wind force and making it less likely for the bolts connecting the wire and the terminal head to loosen.

[0024] 3. This invention can not only use a permanent magnet operating part to synchronously control the moving and stationary contacts inside the vacuum interrupter chambers of multiple solid-sealed poles to open and close the circuit, but also control an electric push rod to push the toothed plate of the corresponding U-shaped structure to make it feed laterally, causing the ring plate to rotate. The arc strip that rotates synchronously with the ring plate is used to squeeze the corresponding protrusion, so that the protrusion drives the corresponding ring disk to move down synchronously, thereby realizing the opening of a single circuit. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the heat dissipation and bird-repelling mechanism of the present invention;

[0028] Figure 3 This is the present invention. Figure 3 A cross-sectional view of the midsole from a visual perspective;

[0029] Figure 4 This is a schematic diagram of the second slide of the present invention;

[0030] Figure 5 This is a schematic diagram of the air outlet component structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the unfolded end rainproof component of the present invention;

[0032] Figure 7 This is a partial structural schematic diagram of the present invention;

[0033] Figure 8 This is the present invention. Figure 7 First-person perspective cross-sectional view;

[0034] Figure 9 This is the present invention. Figure 7 Schematic diagram of the second-view cross-section;

[0035] Figure 10 This is a schematic diagram of the closing and opening mechanism of the present invention;

[0036] Figure 11 This is the present invention. Figure 9 Enlarged schematic diagram of section A in the middle;

[0037] Figure 12 This is a schematic diagram of the permanent magnet operating principle of the present invention.

[0038] The attached figures are labeled as follows: 1. Mechanism box; 11. Cover frame; 12. Base; 2. Solid-sealed pole; 21. Vacuum interrupter; 22. Stationary contact; 23. Moving contact; 3. Current transformer; 4. End rainproof assembly; 41. Cylindrical cover plate; 42. Frustum cover plate; 43. Limiting ring; 44. Guide bar; 45. Spring 1; 46. Spiral guide vane; 47. Elastic element; 48. Clamp; 5. Heat dissipation bird deterrent mechanism. Structure; 51. Slide rail; 52. Screw; 53. Guide rod; 54. Secondary gear; 55. Main gear; 56. Bending column; 57. L-shaped plate; 58. Air outlet assembly; 581. T-shaped frame; 582. Base plate; 583. Guide column one; 584. Guide column two; 585. Spring two; 586. Corrugated folding airbag; 587. Air outlet pipe; 588. Air inlet pipe; 59. Straight side frame; 510. L-shaped side frame; 51 1. T-slot; 512. Slide 1; 513. Guide slot; 514. Slide 2; 5141. Sleeve; 5142. Connecting column; 5143. Top seat; 6. Terminal rod; 7. Terminal head; 8. Closing / opening mechanism; 81. Horizontal shaft; 82. Cross block; 83. Mounting plate; 84. Permanent magnet operating part; 85. U-shaped frame; 86. I-beam plate; 87. Through slot; 88. Straight rod; 89. Pull rod; 810. Insulation 811. Edge post; 812. Ring disc one; 813. Ring disc two; 814. Ring disc three; 815. Spring three; 816. Protruding post; 817. Arc strip; 818. Ring plate; 819. Electric push rod; 820. Gear plate; 821. Gear ring; 822. L-shaped seat; 823. Gear groove; 824. Gear disc; 825. Indicator light; 826. Round rod; 827. Frame plate; 828. Convex mirror; 829. U-shaped hanger rod. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] The permanent magnet integrated primary and secondary pole-mounted circuit breaker of this invention is a type of high-voltage switchgear in the medium-voltage power distribution link of the smart grid. It belongs to a part of vacuum circuit breakers. Its functions are mainly line on / off control, fault protection, and automated operation and maintenance of the distribution network. At the same time, relying on the characteristics of the permanent magnet operating mechanism, it has the advantage of more stable and reliable operation than traditional circuit breakers. Example

[0041] Refer to the instruction manual appendix Figure 1 , Figures 7-8 and Figure 12 This embodiment is the first embodiment of the present invention, providing a permanent magnet integrated primary and secondary pole-mounted circuit breaker. The mechanism box 1 of the integrated primary and secondary pole-mounted circuit breaker consists of a base 12 and a cover frame 11 detachably fixed to the base 12. Multiple solid-sealed pole posts 2 are fixedly mounted on the top of the cover frame 11. A current transformer 3 is fixedly mounted on the outer side of each solid-sealed pole post 2. A terminal rod 6 is fixedly mounted on one end of each solid-sealed pole post 2 and current transformer 3. The exposed part of each terminal rod 6 is covered with a protective sleeve. A vacuum interrupter is provided inside the solid-sealed pole post 2. 21. The vacuum interrupter 21 is equipped with a stationary contact 22 and a moving contact 23 arranged coaxially. One end of the stationary contact 22 is connected to the terminal rod 6 at the input end. The current transformer 3 is equipped with a conductive rod. A conductive ring block is fixedly connected to one end of the conductive rod near the moving contact 23, which is movably sleeved on the outer side of the end of the moving contact 23 extending to the outside of the vacuum interrupter 21. The other end of the conductive rod is fixedly connected to the terminal rod 6 at the output end. The cover frame 11 is equipped with a closing and opening mechanism 8 for controlling the opening and closing of the stationary contact 22 and the moving contact 23. The working principle of the closing and opening mechanism 8 is described in [reference needed]. Figure 12 As shown.

[0042] It should be noted that this invention utilizes a controller to supply a current in the same direction as the magnetic field of the permanent magnet to the closing coil or opening coil. The moving iron core will then move towards the closing or opening end under the action of magnetic force and firmly attract the stationary iron core at the corresponding end. During the movement of the moving iron core under the action of magnetic force, the opening and closing action between the moving contact 23 and the stationary contact 22 will be completed under the corresponding action of the transmission part. The opening and closing mechanism 8 adopts a bistable permanent magnet switch. Since the movement of the moving iron core is controlled by supplying a current in the same direction as the magnetic field of the permanent magnet to the closing coil or opening coil, the opening and closing process is reliable and stable, and there will be no demagnetization of the permanent magnet.

[0043] Furthermore, such as Figures 7-10 and Figure 12 As shown, the closing and opening mechanism 8 includes cross grooves opened on both ends of the inner cavity of the cover frame 11 and cross blocks 82 slidably connected inside the cross grooves. A horizontal shaft 81 is fixedly connected between the two cross blocks 82. The horizontal shaft 81 is ensured to move stably up and down by the cooperation of the cross blocks 82 at both ends with the cross grooves. The inner cavity of the cover frame 11 is also provided with a mounting plate 83 fixed to one side and a U-shaped hanger 828 fixed to the top. A U-shaped frame 85 is fixedly sleeved on the outside of the horizontal shaft 81. A permanent magnet operating part 84 is fixedly provided at the bottom of the mounting plate 83. A transmission component (i.e., the transmission part on the permanent magnet operating part 84) is provided between the permanent magnet operating part 84 and the U-shaped frame 85.

[0044] Furthermore, the transmission assembly includes an I-beam plate 86 movably fitted in the middle (i.e., the horizontal section) of the U-shaped rod 828. The I-beam plate 86 will not move axially in the horizontal section of the U-shaped rod 828. Both ends of the I-beam plate 86 are provided with through slots 87, and straight rods 88 are movably inserted in both slots 87, with the diameter of the straight rods 88 being smaller than the length of the slots 87. This ensures that when the I-beam plate 86 swings left and right around the horizontal section of the U-shaped rod 828, it will not obstruct the vertical movement of the moving contact 23 and the drive rod. One of the straight rods 88 is fixedly connected to a pull rod 89 (i.e., the drive rod on the permanent magnet operating part 84) which is fixedly connected to the output end of the permanent magnet operating part 84. The other straight rod 88 is fixedly fitted with an ear block which is fixedly connected to the bottom end face of the U-shaped frame 85. A closing and opening control unit is provided on the horizontal axis 81 at the position corresponding to each solid-sealed pole 2.

[0045] It should be noted that the proposed I-beam 86 is located in Figure 9-10In the state shown, the moving contact 23 and stationary contact 22 inside the vacuum interrupter 21 on each solid-sealed pole 2 are in the closed state. During the process of synchronously controlling the opening of the moving contact 23 and stationary contact 22 inside the vacuum interrupter 21 on multiple solid-sealed poles 2 through the permanent magnet operating part 84, the moving iron core in the permanent magnet operating part 84 moves upward (i.e., in the direction of the opening end), thereby pulling the pull rod 89 upward synchronously. Under the restriction of the U-shaped hanging rod 828, the I-beam 86 deflects around its horizontal section as the central axis, and the downward deflection end of the I-beam 86 pulls the U-shaped frame 85 downward, thereby pulling the horizontal shaft 81 downward synchronously. In this way, multiple opening and closing control units installed on the horizontal shaft 81 can be controlled to open synchronously. Similarly, the reverse operation can change the moving contact 23 and stationary contact 22 inside the vacuum interrupter 21 on multiple solid-sealed poles 2 from the open state to the closed state.

[0046] Furthermore, such as Figure 10 As shown, the closing and opening mechanism 8 also includes multiple insulating posts 810 that movably pass through the horizontal axis 81. Each insulating post 810 corresponds to a closing and opening control unit, and the upper end of each insulating post 810 is fixedly connected to one end of the moving contact 23 inside the corresponding solid-sealed pole 2 that extends to the outside of the vacuum interrupter 21. From top to bottom, each insulating post 810 has a fixedly fitted ring disc 1 811, a movably fitted ring disc 2 812, and a fixedly fitted ring disc 3 813 arranged sequentially on its outer side. The minimum distance between disk 2 812 and ring disk 3 813 is equal to the diameter of the horizontal axis 81. A spring 3 814 is fixedly connected between ring disk 1 811 and ring disk 2 812 and sleeved on the outside of the insulating post 810. When the moving contact 23 and the stationary contact 22 inside the vacuum interrupter 21 on the solid sealing pole post 2 are in the closed state, the spring 3 814 is still in the compressed state. Two protruding posts 815 with their axis centers directly opposite the axis center line of the horizontal axis 81 are fixedly provided on the outside of ring disk 1 811.

[0047] Furthermore, an annular plate 817 is rotatably mounted on the outer side of the horizontal axis 81 at the position corresponding to each insulating post 810 via bearings. The annular plate 817 will not move along the axial direction of the horizontal axis 81, and there are two annular plates 817, which are placed on both sides of the corresponding insulating post 810. The outer sides of the two annular plates 817 are fixedly connected with an arc strip 816 that is directly opposite to the corresponding protrusion 815. When the moving contact 23 and the stationary contact 22 inside the vacuum interrupter 21 on the solidified pole post 2 are in the closed state, the end of the arc strip 816 away from the corresponding annular plate 817 is aligned with the corresponding protrusion 815. In the abutting state, toothed rings 820 are fixedly fitted on the outer side of one end of the two ring plates 817. Electric push rods 818 (model DYTP450- / 110) are fixedly installed on the inner side of the cover frame 11 at the position corresponding to each insulating post 810. The output end of each electric push rod 818 is fixedly connected to a toothed plate 819 that meshes with the corresponding toothed ring 820. The two toothed plates 819 corresponding to each insulating post 810 are fixedly connected by a horizontal plate to form a U-shaped structure. The electric push rod 818 can push the horizontal plate to move, which can reduce the number of electric push rods 818.

[0048] It should be noted that when it is necessary to open the moving contact 23 and stationary contact 22 inside the vacuum interrupter 21 of each solid-sealed pole 2, which are in the closed state, it is only necessary to control the electric push rod 818 through the control terminal to push the corresponding U-shaped toothed plate 819 to make lateral feed. The lateral feed of the toothed plate 819 drives the corresponding toothed ring 820 to rotate, thereby causing the ring plate 817 to rotate synchronously. During the rotation of the ring plate 817, the arc strip 816 on it will swing synchronously, and the swinging arc strip 816 is used to squeeze... Pressing the corresponding protruding post 815 causes the corresponding ring disk 811 to move downwards synchronously. At the same time, the downward-moving ring disk 811 compresses the corresponding spring 814. During the downward movement of the ring disk 811, it also drives the corresponding insulating post 810 to move downwards synchronously. In this way, the moving contact 23 and the stationary contact 22 inside the vacuum interrupter 21 on a single solid-sealed pole post 2, which are in the closed state, can be opened. If it is necessary to restore the closed state, it is only necessary to control the corresponding electric push rod 818 to pull the toothed plate 819 of the U-shaped structure to reset.

[0049] Furthermore, such as Figures 9-11 As shown, the closing and opening mechanism 8 also includes an L-shaped seat 821 integrally formed on the outside of the ring disc 811 and a gear disc 823 rotatably mounted inside the cover frame 11 on one side of the L-shaped seat 821. The side of the L-shaped seat 821 facing the gear disc 823 has a toothed groove 822 that meshes with the gear disc 823. A round rod 825 that moves through the L-shaped seat 821 is fixedly connected to the top of the inner cavity of the cover frame 11. The round rod 825 can be used to guide and limit the downward state of the corresponding L-shaped seat 821, thereby increasing the resistance of the L-shaped seat 821 during the downward process.

[0050] Furthermore, perforations are provided on one side of the cover frame 11 at the position corresponding to the toothed disc 823. Two indicator lights 824 are fixedly installed on the outside of the toothed disc 823. One indicator light 824 is red (indicating the open state) and the other indicator light 824 is green (indicating the closed state). When the corresponding moving contact 23 and stationary contact 22 change from the closed state to the open state, the downward movement of the corresponding L-shaped seat 821 drives the toothed disc 823 to swing until the other indicator light 824 switches to face the perforation. Both indicator lights 824 are located on the movement trajectory of the perforation as it rotates along the central axis of the paper disc 823. A frame plate 826 is fixedly installed on the outside of the cover frame 11 at the position corresponding to the perforation. A convex mirror 827 with a 45° inclination is fixedly installed inside the frame plate 826 at the position directly opposite the perforation.

[0051] It should be noted that when the moving contact 23 and stationary contact 22 inside the vacuum interrupter 21 on the solid-sealed pole 2 are in the closed state, the green indicator light 824 on the corresponding gear plate 823 is exactly opposite to the through hole. When the moving contact 23 and stationary contact 22 are switched from the closed state to the open state, the downward-moving L-shaped seat 821 can drive the corresponding gear plate 823 to rotate and complete the position switch of the two indicator lights 824. In the corresponding state, the light emitted by the indicator light 824 will pass through the through hole and be projected onto the convex mirror 827. The convex mirror 827 will turn the projected light downward to facilitate the underground workers to observe the operating status of the circuit breaker on the target pole. Example

[0052] Refer to the instruction manual appendix Figure 1 and Figure 6 This embodiment is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: the end of the terminal rod 6 is fixedly connected to the terminal head 7, and the end of the terminal rod 6 is also provided with an end rainproof component 4 for protecting the terminal head 7. The base 12 is provided with a heat dissipation and bird-repelling mechanism 5 for dissipating heat from the terminal head 7 and preventing birds from landing at the position of the terminal head 7.

[0053] It should be noted that the present invention not only uses the end rainproof component 4 to cover the terminal head 7 for rain protection, but also uses the heat dissipation and bird deterrent mechanism 5 to dissipate heat in the area where the terminal head 7 is located after wiring. In the process of heat dissipation, it can also prevent birds from landing on the terminal head 7, thereby improving the stability of the incoming and outgoing line connection of the pole-mounted circuit breaker.

[0054] Furthermore, such as Figures 1-6As shown, the heat dissipation and bird-repelling mechanism 5 includes a slide groove 51 on one side of the base 12. A bent column 56 is slidably installed inside the slide groove 51. A screw 52 is rotatably installed inside the slide groove 51, and a guide rod 53 is fixedly installed inside the slide groove 51. A secondary gear 54 and a main gear 55 are rotatably installed on one side of the base 12 and the cover frame 11, respectively, at the position corresponding to the screw 52. One end of the screw 52 is fixedly connected to the secondary gear 54, and the secondary gear 54 meshes with the main gear 55. A forward and reverse motor (model 80YS25GY38) for driving the main gear 55 to rotate is also fixedly installed inside the cover frame 11. The screw 52 and the guide rod 53 both movably pass through the bent column 56, and the bent column 56 is threadedly sleeved on the outside of the screw 52.

[0055] Furthermore, the heat dissipation and bird deterrent mechanism 5 also includes L-shaped plates 57 fixed to both ends of the outer side of the cover frame 11. A straight side frame 59 and an L-shaped side frame 510 are fixedly connected between corresponding ends of the two L-shaped plates 57. An air outlet assembly 58 is fixedly installed on one side of both the straight side frame 59 and the L-shaped side frame 510. The air outlet assembly 58 includes a T-shaped frame 581 and a base plate 582 located directly below the T-shaped frame 581. A guide post 1 583 and a guide post 2 584, which movably pass through the T-shaped frame 581, are fixedly provided on the top of the base plate 582. The guide post 1 583 is located at the four corners, while the guide post 2 584 is centrally located. A sealing ring is provided at the position where the guide post 2 584 passes through the T-shaped frame 581. A spring 2 585, which fixes and connects the T-shaped frame 581 and the base plate 582, is fitted on the outside of the guide post 2 584, allowing the T-shaped frame 581 and the base plate 582 to move along the axial direction of the guide post 2 584 towards the spring. The second spring 585 is compressed. A corrugated folded airbag 586 is fixedly connected between the T-frame 581 and the base plate 582. The second guide post 584 is located inside the corrugated folded airbag 586. By centrally embedding the second spring 585, interference between the contraction process of the corrugated folded airbag 586 and the compression deformation process of the second spring 585 can be avoided. The outside of the T-frame 581 is also connected to an air inlet pipe 588 and an air outlet pipe 587 directly opposite each terminal head 7. One-way valves are installed on both the air inlet pipe 588 and the air outlet pipe 587. The one-way valve on the air inlet pipe 588 is used to control the supply of air to the inside of the corrugated folded airbag 586, and the one-way valve on the air outlet pipe 587 is used to control the exhaust of air from the inside of the corrugated folded airbag 586. Thus, the intake and exhaust processes of the air inlet pipe 588 and the air outlet pipe 587 are controlled by the change in the internal volume of the corrugated folded airbag 586.

[0056] Furthermore, the heat dissipation and bird deterrent mechanism 5 also includes T-slots 511 on one side of the L-shaped side frame 510 and on the side of the cover frame 11 near the straight side frame 59. Each of the two T-slots 511 has a sliding block 512 slidably mounted inside, which is movably sleeved on the outside of the bent column 56. The cooperation between the sliding block 512 and the corresponding T-slot 511 can assist in limiting the movement of the bent column 56, ensuring its smooth movement. Guide slots 513 are provided on both the straight side frame 59 and the L-shaped side frame 510. Both guide slots 513 have sliding mounts 514 installed inside. Each slide mount 514 consists of a sleeve 5141 and a top seat 5143 that are respectively attached to the two sides of the corresponding side frame, and a connecting column 5142 that fixes the sleeve 5141 and the top seat 5143. The guide slots 513 consist of multiple straight slots and V-shaped slots that are connected to each other. The straight slots and V-shaped slots are alternately arranged. At the same time, the connection between the straight slots and the V-shaped slots and the inflection point of the V-shaped slots are smooth transitions to ensure that the movement of the connecting column 5142 is not obstructed.

[0057] It should be noted that during the process of cooling the area of ​​the terminal head 7 after wiring through the heat dissipation and bird-repelling mechanism 5, the screw 52 is driven to reciprocate in both directions by a forward and reverse motor. (The following description refers to...) Figure 2 and Figure 5 (The state shown is explained) When the forward and reverse motor drives the main gear 55 to rotate in the opposite direction, the secondary gear 54 will rotate in the forward direction under the action of the main gear 55, thereby driving the screw 52 to rotate in the forward direction. During the forward rotation of the screw 52, ​​it will drive the bent column 56 to slide to the right along the T-slot 511 under the auxiliary restriction of the slide block 512, and drive the slide block 514 to move to the right in sync.

[0058] During the rightward movement of the slide block 514, since the connecting column 5142 slides along the guide groove 513, after the connecting column 5142 moves to the upper side of the V-groove area, the slide block 514 will move axially along the vertical section of the bent column 56, causing the top seat 5143 to move vertically upward. After the upward-moving top seat 5143 contacts the base plate 582, as the top seat 5143 continues to move upward, it will push the base plate 582 upward to compress the spring 585, and drive the corrugated folding airbag 586 to contract. As the corrugated folding airbag 586 contracts, the internal pressure will gradually decrease. When the volume increases, the one-way valve on the exhaust pipe 587 will open, allowing the gas inside the corrugated folded airbag 586 to be discharged from the exhaust pipe 587 and blown towards the corresponding terminal head 7. This achieves heat dissipation in the area where the terminal head 7 is located after wiring and effectively prevents dust from the external environment from accumulating in the area where the terminal head 7 is located. Conversely, after the connecting column 5142 moves to the downward side of the V-groove area, as the corrugated folded airbag 586 extends and resets, the one-way valve on the intake pipe 588 will open, replenishing air into the corrugated folded airbag 586, waiting for the next round of compression and exhaust. In this way, continuous heat dissipation and dust prevention can be achieved.

[0059] In addition, the heat dissipation bird deterrent mechanism 5 also includes a microwave radar sensor (not shown in the figure) installed on the outside of the cover frame 11. The microwave radar sensor uses a 24GHz or 77GHz frequency modulated continuous wave (FMCW) radar to emit microwave signals to detect whether birds are approaching the key locations of the pole-mounted circuit breaker (including but not limited to the wiring terminals). When a bird is detected approaching, the heat dissipation bird deterrent mechanism 5 is activated by the control terminal. At the same time, the control terminal can be programmed to automatically activate the heat dissipation bird deterrent mechanism 5 when no birds approach within a certain period of time, so as to ensure that the heat dissipation process at the terminal head 7 is stable.

[0060] Furthermore, such as Figure 6 As shown, the end rainproof assembly 4 includes a cylindrical cover plate 41 and a frustum cover plate 42 rotatably mounted on the outside of the terminal rod 6 and coaxially arranged. A spring 45 is fixedly connected between the cylindrical cover plate 41 and the frustum cover plate 42 and sleeved on the outside of the terminal rod 6. When the spring 45 is in its natural state, the upper constricted end of the frustum cover plate 42 is still inside the cylindrical cover plate 41. Two limiting rings 43 for limiting the cylindrical cover plate 41 are fixedly sleeved on the outside of the terminal rod 6. A protective sleeve is also sleeved on the outside of the terminal rod 6. The protective sleeve is used to cover the area of ​​the terminal rod 6 not covered by the cylindrical cover plate 41, and a mechanical seal is provided at the docking position of the cylindrical cover plate 41 and the protective sleeve.

[0061] Furthermore, the end rainproof assembly 4 also includes two guide strips 44 fixed to the top of the inner side of the cylindrical cover plate 41. The bottom end of the guide strip 44 moves through the frustum cover plate 42. During the elastic deformation of the spring 45, the guide strip 44 always remains in the state of moving through the frustum cover plate 42. The top of the frustum cover plate 42 is provided with a vent. Multiple spiral guide vanes 46 are fixedly provided in a ring shape on the inner side of the frustum cover plate 42. Elastic members 47 opposite to the two guide strips 44 are also fixedly provided on the inner side of the frustum cover plate 42. A clamp 48 is fixedly provided at the opposite end of each of the two elastic members 47. The clamp 48 is set as a semi-circular ring structure. A groove is provided on the opposite side of each of the two clamps 48. Multiple rubber rollers are rotatably installed in the two grooves in a equidistant manner. The rotation center axis of the rubber roller is parallel to the central axis of the frustum cover plate 42, so that the wire clamped by the clamp 48 will not slide axially, but will not affect the radial rotation of the clamp 48.

[0062] Furthermore, each elastic element 47 is fixed to two horizontally collinear fixed blocks and a horizontally collinear moving block on the inner side of the frustum cover plate 42. A clamp 48 is fixedly installed at the end of the moving block away from the corresponding fixed block. A square post is fixedly provided on the side of each fixed block facing the corresponding moving block. A square groove is opened on the opposite side of each moving block, directly opposite the corresponding square post. The square post is movably inserted into the corresponding square groove, and a return spring is sleeved on the outer side of each square post, fixedly connected to the corresponding fixed block and moving block. During the elastic deformation of the return spring, the square post remains inserted into the corresponding square groove. In addition, the ends of the moving blocks that come into contact with the corresponding guide bars 44 are all set as inclined surfaces. When the frustum cover plate 42 is pushed upward during the installation of the inlet and outlet lines, the guide bars are used to squeeze the corresponding moving blocks, causing the two moving blocks to move in opposite directions and compress the corresponding return springs to store force. This facilitates the connection and installation of the inlet and outlet lines with the corresponding terminal heads 7. After the external force is removed, the moving blocks are reset under the restoring force of the return springs, so that the two clamps tightly clamp the installed wires, thereby reducing the sway of the wires under the action of wind and making it less likely for the bolts connecting the wires and the terminal heads 7 to loosen.

[0063] It should be noted that during the process of using the end-rainproof assembly 4 to protect the area where the terminal head 7 is located from rain, the cylindrical cover plate 41 of the spring-45 in its natural state covers the vent at the top of the frustum cover plate 42, and the frustum cover plate 42 itself covers the area where the terminal head 7 is located, thus preventing rainwater from falling on the location of the terminal head 7. Furthermore, when the spring-45 is in its natural state, the two moving blocks, under the action of the corresponding return springs, push the two clamps 48 to tightly clamp the wire. When the air discharged from the air outlet pipe 587 blows towards the corresponding frustum cover plate 42, due to the action of the spiral guide vane 46, the airflow blown into the frustum cover plate 42 drives the frustum cover plate 42 to rotate synchronously with the cylindrical cover plate 41. The upward airflow then exits through the vent at the top of the frustum cover plate 42. During this process, the spiral guide vane 46... The swirling airflow can effectively accelerate the dissipation of heat generated during operation in the area where the terminal head 7 is located. It can also use the directional airflow in conjunction with the airflow discharged along the outer side of the frustum plate 42 to prevent dust from the external environment from accumulating in the area where the terminal head 7 is located. Furthermore, the cylindrical cover plate 41, which rotates synchronously with the frustum cover plate 42 under the action of the spiral airflow, can also effectively prevent birds from landing in the area where the terminal head 7 is located. In addition, reflective strips distributed in an annular pattern can be fixed on the outer side of the cylindrical cover plate 41 and the frustum cover plate 42, so that the rotating cylindrical cover plate 41 and the frustum cover plate 42 will generate alternating strong light stimulation under the action of sunlight, preventing birds from approaching. At the same time, bird spikes can be added to other horizontal areas on the pole-mounted circuit breaker where birds are likely to land, thereby further improving the bird prevention effect.

[0064] The working principle of the above-mentioned pole-mounted circuit breaker is as follows: During the operation of the pole-mounted circuit breaker, the screw 52 is driven to rotate in both directions by a forward and reverse motor, so that the top seat 5143 and the sleeve 5141 move back and forth along the corresponding guide groove 513 along with the connecting column 5142. During the reciprocating movement, there is also a reciprocating up and down movement, which realizes the intermittent compression of the corrugated folded airbag 586 to discharge airflow to blow into the corresponding frustum cover plate 42. The spiral guide vanes 46 on the inner side of the frustum cover plate 42 form a spiral airflow, which drives the frustum cover plate 42 and the cylindrical cover plate 41 to rotate synchronously. The spiral airflow is used to accelerate the dissipation of heat generated in the area where the terminal head 7 is located during operation. The airflow in the direction of the spiral airflow, together with the airflow discharged along the outer side of the frustum arc plate 42, can also prevent dust from the external environment from accumulating in the area where the terminal head 7 is located. Furthermore, the cylindrical cover plate 41, which rotates synchronously with the frustum cover plate 42 under the action of the spiral airflow, can also effectively prevent birds from landing in the area where the terminal head 7 is located.

[0065] Furthermore, during the operation of the pole-mounted circuit breaker, the moving contacts 23 and stationary contacts 22 inside the vacuum interrupters 21 on multiple solid-sealed poles 2 can be synchronously controlled to open and close via the permanent magnet operating unit 84. In addition, if it is necessary to control the moving contacts 23 and stationary contacts 22 inside the vacuum interrupter 21 on a single solid-sealed pole 2 to open, the control terminal only needs to control the electric push rod 818 to push the toothed plate 819 of the corresponding U-shaped structure to make lateral feed, and the toothed plate 819 drives the corresponding toothed ring 820 to rotate, thereby driving the ring plate 817 to rotate synchronously, and the arc strip 816 that rotates synchronously with the ring plate 817 squeezes the corresponding protrusion 815, so that the protrusion 815 drives the corresponding ring disc 811 to move down synchronously, thereby realizing the opening.

[0066] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A permanent magnet type integrated primary and secondary pole-mounted circuit breaker, characterized in that, The integrated primary and secondary pole-mounted circuit breaker includes: The mechanism box consists of a base (12) and a cover frame (11) that is detachably fixed to the base (12). Multiple solid-sealed poles (2) are fixedly provided on the top of the cover frame (11). A current transformer (3) is fixedly provided on the outside of each solid-sealed pole (2). A vacuum interrupter (21) is provided inside the solid-sealed pole (2). A stationary contact (22) and a moving contact (23) are arranged coaxially inside the vacuum interrupter (21). A closing and opening mechanism (8) for controlling the opening and closing of the stationary contact (22) and the moving contact (23) is provided inside the cover frame (11). The solid-sealed pole (2) and the current transformer (3) are both fixedly provided with a terminal rod (6) at one end. The end of the terminal rod (6) is fixedly connected with a terminal head (7). The end of the terminal rod (6) is also provided with a terminal head rainproof component (4) for protecting the terminal head (7). The base (12) is provided with a heat dissipation and bird-repelling mechanism (5) for dissipating heat from the terminal head (7) and preventing birds from landing on the terminal head (7). The end rainproof assembly (4) includes a cylindrical cover plate (41) and a frustum cover plate (42) rotatably mounted on the outside of the terminal rod (6) and arranged coaxially. A spring (45) is fixedly connected between the cylindrical cover plate (41) and the frustum cover plate (42) and sleeved on the outside of the terminal rod (6). Two limiting rings (43) for limiting the cylindrical cover plate (41) are fixedly sleeved on the outside of the terminal rod (6). The end rainproof assembly (4) also includes two guide strips (44) fixed to the top of the inner side of the cylindrical cover plate (41). The bottom end of the guide strip (44) moves through the frustum cover plate (42). The top of the frustum cover plate (42) is provided with a vent. Multiple spiral guide vanes (46) evenly distributed in a ring are fixed on the inner side of the frustum cover plate (42). Elastic members (47) opposite to the two guide strips (44) are also fixed on the inner side of the frustum cover plate (42). Clamps (48) are fixed on the opposite ends of the two elastic members (47).

2. The permanent magnet type integrated primary and secondary pole-mounted circuit breaker according to claim 1, characterized in that, The heat dissipation and bird-repelling mechanism (5) includes a slide groove (51) on one side of the base (12). A bent column (56) is slidably installed inside the slide groove (51). A screw (52) is rotatably installed inside the slide groove (51) and a guide rod (53) is fixedly installed. A secondary gear (54) and a main gear (55) are rotatably installed on one side of the base (12) and the cover frame (11) respectively at the position corresponding to the screw (52). One end of the screw (52) is fixedly connected to the secondary gear (54). The secondary gear (54) meshes with the main gear (55). The screw (52) and the guide rod (53) both movably pass through the bent column (56), and the bent column (56) is threaded onto the outside of the screw (52).

3. A permanent magnet type integrated primary and secondary pole-mounted circuit breaker according to claim 2, characterized in that, The heat dissipation and bird deterrent mechanism (5) also includes L-shaped plates (57) fixed at both ends of the outer side of the cover frame (11). A straight side frame (59) and an L-shaped side frame (510) are fixedly connected between the corresponding ends of the two L-shaped plates (57). An air outlet assembly (58) is fixedly installed on one side of both the straight side frame (59) and the L-shaped side frame (510).

4. A permanent magnet type integrated primary and secondary pole-mounted circuit breaker according to claim 3, characterized in that, The air outlet assembly (58) includes a T-shaped frame (581) and a base plate (582) located directly below the T-shaped frame (581). The top of the base plate (582) is fixedly provided with a guide post 1 (583) and a guide post 2 (584) that move through the T-shaped frame (581). The outer side of the guide post 2 (584) is fitted with a spring 2 (585) that is fixedly connected between the T-shaped frame (581) and the base plate (582). A corrugated folded airbag (586) is fixedly connected between the T-shaped frame (581) and the base plate (582). The guide post 2 (584) is located inside the corrugated folded airbag (586). The outer side of the T-shaped frame (581) is also connected to an air inlet pipe (588) and an air outlet pipe (587) that is directly opposite each terminal head (7).

5. A permanent magnet type integrated primary and secondary pole-mounted circuit breaker according to claim 3, characterized in that, The heat dissipation and bird deterrence mechanism (5) also includes a T-shaped groove (511) on one side of the L-shaped side frame (510) and on the side of the cover frame (11) near the straight side frame (59). A slide seat (512) is slidably installed inside the two T-shaped grooves (511) and is movably sleeved on the outside of the bent column (56). Guide grooves (513) are provided on both the straight side frame (59) and the L-shaped side frame (510). A slide seat (514) is slidably installed inside the two guide grooves (513). The slide block 2 (514) consists of a sleeve (5141) and a top seat (5143) that are respectively attached to the two sides of the corresponding side frame, and a connecting column (5142) that fixes the sleeve (5141) and the top seat (5143). The guide groove (513) consists of multiple straight grooves and V-shaped grooves that are connected, and the straight grooves and V-shaped grooves are alternately arranged.

6. A permanent magnet type integrated primary and secondary pole-mounted circuit breaker according to claim 1, characterized in that, The closing and opening mechanism (8) includes a cross groove on both ends of the inner cavity of the cover frame (11) and a cross block (82) slidably connected inside the cross groove. A horizontal shaft (81) is fixedly connected between the two cross blocks (82). The inner cavity of the cover frame (11) is also provided with a mounting plate (83) fixed to one side and a U-shaped hanger (828) fixed to the top. A U-shaped frame (85) is fixedly sleeved on the outside of the horizontal shaft (81). A permanent magnet operating part (84) is fixedly provided at the bottom of the mounting plate (83). A transmission component is provided between the permanent magnet operating part (84) and the U-shaped frame (85).

7. A permanent magnet type integrated primary and secondary pole-mounted circuit breaker according to claim 6, characterized in that, The transmission assembly includes an I-beam plate (86) movably sleeved in the middle of the U-shaped rod (828). Both ends of the I-beam plate (86) are provided with through slots (87). Straight rods (88) are movably sleeved in the two through slots (87). One of the straight rods (88) is fixedly connected to a pull rod (89) fixedly connected to the output end of the permanent magnet operating part (84) in the middle. The other straight rod (88) is fixedly sleeved with an ear block fixedly connected to the bottom end face of the U-shaped frame (85) in the middle of its outer side.

8. A permanent magnet type integrated primary and secondary pole-mounted circuit breaker according to claim 6, characterized in that, The closing and opening mechanism (8) also includes a plurality of insulating posts (810) that movably pass through the horizontal axis (81). Each insulating post (810) has a fixedly sleeved ring disc one (811), a movably sleeved ring disc two (812), and a fixedly sleeved ring disc three (813) on its outer side from top to bottom. A spring three (814) is fixedly connected between the ring disc one (811) and the ring disc two (812) and sleeved on the outer side of the insulating post (810). Two protruding posts (815) with their center lines directly opposite to the center line of the horizontal axis (81) are fixedly provided on the outer side of the ring disc one (811). A ring plate (817) is rotatably mounted on the outer side of the horizontal axis (81) at the position corresponding to each insulating post (810) via a bearing. An arc strip (816) is fixedly connected to the outer side of the ring plate (817) and is directly opposite to the corresponding protrusion (815). A toothed ring (820) is fixedly sleeved on the outer side of one end of the ring plate (817). An electric push rod (818) is fixedly installed on the inner side of the cover frame (11) at the position corresponding to each insulating post (810). A toothed plate (819) that meshes with the corresponding toothed ring (820) is fixedly connected to the output end of each electric push rod (818).

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