Primary and secondary fusion complete column-mounted circuit breaker

Abstract

The invention relates to the technical field of pole-mounted circuit breakers, and discloses a primary and secondary fusion complete pole-mounted circuit breaker which comprises a transmission case, a plurality of vacuum bubbles fixedly arranged on the transmission case and a valve shaft rotationally arranged on the transmission case. The transmission case is provided with two locking mechanisms used for locking the switching-on rod and the switching-off rod. The plurality of vacuum bubbles are respectively provided with an induction mechanism. Through linkage arrangement of the induction mechanism, the transmission mechanism and the locking mechanism, the mechanical locking function in the vacuum bubble vacuum losing state is achieved, the induction mechanism can detect the vacuum degree of the vacuum bubble in real time, when the vacuum bubble loses vacuum, the tension spring drives the valve disc to drive the jacking column to act, the jacking column transmits power to the locking mechanism through the transmission mechanism, and the locking mechanism locks the vacuum bubble. The technical defects that in the prior art, no linkage locking mechanism exists after the vacuum bubble loses efficacy, and accidents such as short circuit or explosion are likely to be caused by misoperation are effectively overcome.

Description

Technical Field

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

[0002] Integrated pole-mounted circuit breakers are key switching equipment in distribution networks. Their core functionality lies in the deep integration of primary-side switching and arc-extinguishing functions with secondary-side intelligent modules for measurement, protection, and communication, eliminating the need for external secondary equipment. They enable rapid fault isolation, flexible load control, and remote monitoring of operational status. Featuring a compact structure, convenient installation, and efficient operation and maintenance, they are widely used in 10-35kV distribution network lines, providing support for safe and stable power supply.

[0003] Chinese patent CN212303543U discloses an assisted pole-mounted vacuum circuit breaker, including a transmission box and a vacuum bulb mounted on the transmission box. The transmission box houses a drive device and transmission assembly for controlling the up-and-down movement of the moving conductive rod within the vacuum bulb. The transmission assembly includes a main drive rod, a connecting rod, a return spring, and an assist spring. The main drive rod is horizontally slidably mounted within the transmission box, and is connected to the moving conductive rod of each vacuum bulb via a connecting rod transmission connection. Both the return spring and the assist spring are connected between the main drive rod and the transmission box housing. The return spring is parallel to the main drive rod, and the assist spring is perpendicular to the main drive rod; the assist spring is a compression spring. In this assisted pole-mounted vacuum circuit breaker, during the disconnection process, the assist spring, moving with the main drive rod, generates a significant thrust, thereby assisting the drive device in controlling the transmission assembly to quickly initiate an action, causing the moving conductive rod of the vacuum bulb to disconnect rapidly.

[0004] As shown in the aforementioned patent, in a primary and secondary integrated pole-mounted circuit breaker, the vacuum bulb is the core arc-extinguishing and insulation actuator. Its functions are specifically manifested as follows: under the circuit breaker closing condition, it ensures reliable conduction of the circuit path; under the circuit breaker opening condition, it quickly extinguishes the high-voltage arc generated during the separation of the moving and stationary contacts and maintains the insulation performance of the preset gap between the contacts, ensuring the safety of line switching operations and the stability of power grid operation; when the vacuum environment inside the vacuum bulb is destroyed, conductive media such as air and water vapor will invade the vacuum bulb, causing its arc-extinguishing performance to be completely lost, and the insulation strength to be greatly reduced to the point of not meeting the safety operation standards; if the circuit breaker is opened at this time, the high-voltage arc generated by the separation of the moving and stationary contacts cannot be effectively extinguished and will continue to burn, directly causing contact erosion, melting, or even adhesion, thereby causing phase-to-phase short circuit or ground short circuit faults, ultimately leading to the rupture of the vacuum bulb shell and damage to the circuit breaker body, and in severe cases, it may even cause equipment explosion, while expanding the line fault range and destroying the stability of power grid operation.

[0005] The existing control and protection mechanisms of primary and secondary integrated pole-mounted circuit breakers do not have a linkage interlocking mechanism for vacuum bulb vacuum failure. That is, when vacuum bulb vacuum failure occurs, the opening and closing actions of the circuit breaker cannot be effectively constrained by mechanical locking. If maintenance personnel fail to recognize the vacuum bulb vacuum failure and mistakenly trigger the opening or closing operation, it will directly induce the aforementioned safety accidents such as short circuits and equipment explosions. This will not only cause significant equipment and property damage, but also pose a fatal threat to the personal safety of the operators, posing a significant and unavoidable safety risk.

[0006] Therefore, it is necessary to provide a primary and secondary integrated pole-mounted circuit breaker to solve the above-mentioned technical problems. Summary of the Invention

[0007] The purpose of this invention is to provide a primary and secondary integrated pole-mounted circuit breaker that achieves mechanical locking function in the vacuum bubble loss state through the linkage of the sensing mechanism, transmission mechanism and locking mechanism. This effectively solves the technical defects of the prior art, such as the lack of linkage locking mechanism after vacuum bubble failure and the susceptibility to short circuits or explosions caused by misoperation.

[0008] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a primary and secondary integrated pole-mounted circuit breaker, comprising a transmission box, multiple vacuum bulbs fixedly mounted on the transmission box, and a valve shaft rotatably mounted on the transmission box. A closing lever and a closing lever are fixedly mounted on both sides of the valve shaft, and the transmission box is provided with two locking mechanisms for locking the closing lever and the closing lever. Each of the multiple vacuum bulbs is provided with a sensing mechanism for detecting whether the vacuum bulb has lost vacuum. The transmission box is provided with a transmission mechanism. When the sensing mechanism detects that the vacuum bulb has lost vacuum, the sensing mechanism drives the two locking mechanisms to lock the closing lever and the closing lever through the transmission mechanism.

[0009] A further configuration of the present invention is as follows: the sensing mechanism includes a sensing cylinder, a top column, a valve disc, and a tension spring. The sensing cylinder is fixedly mounted on a vacuum bubble. One end of the sensing cylinder is connected to a communication port, which communicates with the inner cavity of the vacuum bubble. A valve disc for sealing the communication port is slidably disposed inside the sensing cylinder. The top column penetrates the side wall of the sensing cylinder away from the communication port. The tension spring is disposed inside the sensing cylinder. One end of the tension spring is fixedly connected to the valve disc, and the other end of the tension spring is fixedly connected to the inner side wall of the sensing cylinder. The tension spring is in a stretched state. The top column is connected to a transmission mechanism.

[0010] A further feature of the present invention is that a disc is fixedly fitted onto one end of the top column extending from the sensing cylinder, and a corrugated pipe is provided between the disc and the sensing cylinder. One end of the corrugated pipe is fixedly connected to the disc, and the other end of the corrugated pipe is fixedly connected to the side wall of the sensing cylinder. The inner cavity of the corrugated pipe is connected to the inner cavity of the sensing cylinder, and neither the inner cavity of the corrugated pipe nor the inner cavity of the sensing cylinder is connected to the outside.

[0011] A further configuration of the present invention is as follows: the locking mechanism includes a mounting box, a locking plate, and an adjusting rod. The mounting box is fixedly mounted on the transmission box, and the locking plate is slidably mounted inside the mounting box. A groove is provided on the top of the mounting box, and the adjusting rod passes through the groove and slides in cooperation with the groove. The bottom end of the adjusting rod is fixedly connected to the locking plate. When both locking plates extend out of the mounting box, the two locking plates are respectively located above the closing rod and the opening rod, so that the closing rod and the opening rod cannot rotate.

[0012] A further configuration of the present invention is as follows: the transmission mechanism includes a drive rod, a connecting rod, a transmission rod, and a support assembly; the support assembly is disposed on the transmission box; the drive rod is slidably disposed on the support assembly; the ends of all the top columns are in contact with the drive rod; the drive rod is fixedly connected to the transmission rod via the connecting rod; and the two ends of the transmission rod are respectively fixedly connected to two adjusting rods.

[0013] A further configuration of the present invention is as follows: the support assembly includes a support rod, a guide rail, and a mounting base; the support rod is fixedly mounted on the transmission box; the guide rail is fixedly mounted on the top end of the support rod; a slider is slidably mounted inside the guide rail; the mounting base is fixedly mounted on the top end of the slider; the drive rod passes through the mounting base and is fixedly connected to the mounting base.

[0014] A further feature of the present invention is that an installation block is fixedly installed inside the induction cylinder, and an alarm switch is fixedly installed on the installation block. When the valve disc moves away from the communication port, the valve disc presses the alarm switch, and the alarm switch is connected to a remote terminal signal through a signal transmission module.

[0015] A further feature of the present invention is that a protective plate is slidably disposed on the upper surface of the mounting box, the bottom wall of the protective plate is in contact with the top wall of the mounting box, the adjusting rod passes through the protective plate and is fixedly connected to the protective plate.

[0016] A further feature of the present invention is that: four magnetic blocks are fixedly installed on the upper surface of the mounting box, the four magnetic blocks are arranged in pairs on both sides of the first protective plate, and the four magnetic blocks are distributed in a rectangular array; locking rods are fixedly installed on both sides of the first protective plate, the locking rods are arranged between two magnetic blocks on the same side; a connecting plate is fixedly installed in the middle of the transmission rod, and a pull ring is fixedly installed at the end of the connecting plate away from the transmission rod.

[0017] A further feature of the present invention is that a second guard plate is slidably disposed on the upper surface of the guide rail, the bottom wall of the second guard plate is in contact with the top wall of the guide rail, the mounting seat penetrates the second guard plate, and the mounting seat is fixedly connected to the second guard plate.

[0018] In summary, the present invention has the following beneficial effects: The present invention realizes the mechanical interlocking function in the vacuum bubble de-vacuum state by linking the sensing mechanism, the transmission mechanism and the locking mechanism. The sensing mechanism can detect the vacuum degree of the vacuum bubble in real time. When the vacuum bubble de-vacuums, the tension spring drives the valve disc to drive the top column to move. The top column transmits power to the locking mechanism through the transmission mechanism, so that the locking plate extends and locks the closing rod and the opening rod. This effectively solves the technical defects of the prior art that there is no linkage interlocking mechanism after the vacuum bubble fails, and that accidents such as short circuits or explosions are easily caused by misoperation. This ensures the stability of power grid operation and the safety of equipment.

[0019] The bellows in the sensing mechanism provides a sealed protection for the inner cavity of the sensing cylinder, preventing external gases from accelerating the aging of the valve disc. Combined with the instant alarm function of the alarm switch, this not only extends the service life of the sensing mechanism but also allows for rapid fault feedback to the remote terminal. The first protective plate of the locking mechanism and the second protective plate of the support component respectively provide dust protection for the mounting box and the guide rail. Furthermore, through the magnetic attraction between the magnetic block and the locking rod, as well as the manual locking design of the pull ring, the device has both automatic fault locking and manual anti-accidental touch locking functions, significantly improving the reliability of the device and the versatility of its application scenarios. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the vacuum bubble and sensing mechanism of the present invention;

[0022] Figure 3 This is a schematic diagram of the transmission mechanism and locking mechanism of the present invention;

[0023] Figure 4 This is a schematic diagram of the locking mechanism of the present invention;

[0024] Figure 5 This is a schematic diagram showing the disassembled structure of the locking mechanism of the present invention;

[0025] Figure 6 This is a cross-sectional view of the mounting box of the present invention;

[0026] Figure 7 This is a schematic diagram of the disassembled structure of the support component of the present invention;

[0027] Figure 8 This is a three-dimensional structural schematic diagram of the sensing mechanism of the present invention;

[0028] Figure 9 This is a cross-sectional view of the sensing mechanism of the present invention.

[0029] In the diagram: 1. Transmission box; 2. Vacuum bulb; 3. Valve shaft; 4. Opening lever; 5. Closing lever; 6. Locking mechanism; 601. Mounting box; 602. Locking plate; 603. Slide groove; 604. Adjusting rod; 605. Guard plate one; 606. Locking rod; 607. Magnetic block; 7. Transmission mechanism; 701. Support rod; 702. Guide rail; 703. Slider; 704. Mounting base; 705. Drive rod; 706. Connecting rod; 707. Transmission rod; 708. Guard plate two; 709. Connecting plate; 710. Pull ring; 8. Sensing mechanism; 801. Sensing cylinder; 802. Connecting port; 803. Valve disc; 804. Top column; 805. Tension spring; 806. Disc; 807. Bellows; 808. Mounting block; 809. Alarm switch. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0031] Please see Figures 1-3 , Figure 8 and Figure 9 In this embodiment of the invention, a primary and secondary integrated pole-mounted circuit breaker includes a transmission box 1, multiple vacuum bulbs 2 fixedly mounted on the transmission box 1, and a valve shaft 3 rotatably mounted on the transmission box 1. A closing lever 5 and a opening lever 4 are fixedly mounted on both sides of the valve shaft 3. The valve shaft 3 controls the closing and opening of the pole-mounted circuit breaker. Both the closing lever 5 and the opening lever 4 have rings at their ends to facilitate rotation of the valve shaft 3. When the closing lever 5 is pulled downwards, the pole-mounted circuit breaker performs a closing operation; when the opening lever 4 is pulled downwards, the pole-mounted circuit breaker performs an opening operation. The valve shaft 3, closing lever 5, and opening lever 4 are all existing... The specific principles are not described in detail here. The transmission box 1 is an inherent structure on the primary and secondary integrated pole-mounted circuit breaker, used to drive the moving conductive rod inside the vacuum bulb 2. The transmission box 1 is equipped with two locking mechanisms 6 for locking the closing rod 5 and the opening rod 4. Each of the multiple vacuum bulbs 2 is equipped with a sensing mechanism 8, which is used to detect whether the vacuum bulb 2 has lost vacuum. The transmission box 1 is equipped with a transmission mechanism 7. When the sensing mechanism 8 detects that the vacuum bulb 2 has lost vacuum, the sensing mechanism 8 drives the two locking mechanisms 6 through the transmission mechanism 7 to lock the closing rod 5 and the opening rod 4.

[0032] In this embodiment, preferably, the sensing mechanism 8 includes a sensing cylinder 801, a top post 804, a valve disc 803, and a tension spring 805. The sensing cylinder 801 is fixedly mounted on the vacuum bubble 2. One end of the sensing cylinder 801 is connected to a connecting port 802, which communicates with the inner cavity of the vacuum bubble 2. A valve disc 803 for sealing the connecting port 802 is slidably disposed inside the sensing cylinder 801. The top post 804 penetrates the side wall of the sensing cylinder 801 away from the connecting port 802. The tension spring 805 is disposed inside the sensing cylinder 801. One end of the tension spring 805 is fixedly connected to the valve disc 803, and the other end of the tension spring 805 is fixedly connected to the inner side wall of the sensing cylinder 801. The tension spring 805 is in a stretched state. The top post 804 is connected to the transmission... The mechanism 7 is connected by transmission. Since the connecting port 802 on the induction cylinder 801 is connected to the inner cavity of the vacuum bubble 2, the valve disc 803 is attached to the inner wall of the induction cylinder 801 to seal the connecting port 802. Under the action of the negative pressure inside the vacuum bubble 2, the valve disc 803 is tightly attached to the inner wall of the induction cylinder 801, which effectively ensures the sealing of the vacuum bubble 2. When the vacuum bubble 2 fails and loses vacuum, as outside air enters, the valve disc 803 loses the adsorption force of the negative pressure environment of the vacuum bubble 2. At this time, under the action of the tension spring 805, the valve disc 803 moves away from the vacuum bubble 2, which in turn drives the top column 804 to move away from the vacuum bubble 2. When the top column 804 moves, it drives the locking mechanism 6 through the transmission mechanism 7 to lock the closing rod 5 and the opening rod 4.

[0033] This invention achieves a mechanical interlocking function for vacuum bubble 2 in the event of vacuum loss by linking the sensing mechanism 8, the transmission mechanism 7, and the locking mechanism 6. The sensing mechanism 8 can detect the vacuum level of vacuum bubble 2 in real time. When vacuum bubble 2 loses vacuum, the tension spring 805 drives the valve disc 803 to move the top column 804. The top column 804 transmits power to the locking mechanism 6 through the transmission mechanism 7, causing the locking plate 602 to extend and lock the closing rod 5 and the opening rod 4. This effectively solves the technical defects of the prior art, such as the lack of a linkage interlocking mechanism after vacuum bubble 2 fails, which can easily lead to accidents such as short circuits or explosions due to misoperation. This ensures the stability of power grid operation and the safety of equipment.

[0034] In this embodiment, preferably, a disc 806 is fixedly fitted onto one end of the top column 804 extending out of the sensing cylinder 801. A corrugated pipe 807 is provided between the disc 806 and the sensing cylinder 801. One end of the corrugated pipe 807 is fixedly connected to the disc 806, and the other end of the corrugated pipe 807 is fixedly connected to the side wall of the sensing cylinder 801. The inner cavity of the corrugated pipe 807 is connected to the inner cavity of the sensing cylinder 801, and neither the inner cavity of the corrugated pipe 807 nor the inner cavity of the sensing cylinder 801 is connected to the outside. Furthermore, the corrugated pipe 807 and the sensing cylinder 801... The interior is filled with an inert gas. The inert gas has stable chemical properties and can prevent reactive gases such as oxygen from contacting the metal parts such as the valve disc 803 inside the sensing cylinder 801, thus preventing oxidation and corrosion of the parts and extending the service life of the sensing mechanism 8. The bellows 807 can extend and retract, so that the bellows 807 will not affect the movement of the mounting base 704. Furthermore, the protective function of the bellows 807 prevents outside air from entering the sensing cylinder 801, thereby preventing the external gas environment from accelerating the aging of the valve disc 803 and thus improving the service life of the sensing mechanism 8.

[0035] In this embodiment, preferably, an installation block 808 is fixedly installed inside the sensing cylinder 801, and an alarm switch 809 is fixedly installed on the installation block 808. When the valve disc 803 moves away from the communication port 802, the valve disc 803 presses the alarm switch 809. The alarm switch 809 is connected to the remote terminal signal through the signal transmission module, so that when the sensing mechanism 8 detects that the vacuum bubble 2 has lost vacuum, it can quickly sound an alarm and promptly alert the remote terminal to prompt the staff to carry out maintenance.

[0036] Please see Figure 5 and Figure 6 In this embodiment of the invention, the locking mechanism 6 includes a mounting box 601, a locking plate 602, and an adjusting rod 604. The mounting box 601 is fixedly mounted on the transmission box 1. The locking plate 602 is slidably mounted inside the mounting box 601, with one end of the locking plate 602 extending out of the mounting box 601. A sliding groove 603 is provided on the top of the mounting box 601. The adjusting rod 604 passes through the sliding groove 603 and slides in cooperation with the sliding groove 603. The bottom end of the adjusting rod 604 is fixedly connected to the locking plate 602. When both locking plates 602 extend out of the mounting box 601, the two locking plates 602 are respectively located above the closing rod 5 and the opening rod 4, preventing the closing rod 5 and the opening rod 4 from rotating.

[0037] In this embodiment, preferably, a protective plate 605 is slidably disposed on the upper surface of the mounting box 601. The bottom wall of the protective plate 605 is in contact with the top wall of the mounting box 601. The adjusting rod 604 passes through the protective plate 605 and is fixedly connected to the protective plate 605. The protective plate 605 is tightly in contact with the top wall of the mounting box 601, so that external dust cannot enter the sliding groove 603, thereby better protecting the mounting box 601 and improving its service life.

[0038] Please see Figures 1-4 and Figure 7 In this embodiment of the invention, the transmission mechanism 7 includes a drive rod 705, a connecting rod 706, a transmission rod 707, and a support assembly. The support assembly is mounted on the transmission box 1, and the drive rod 705 is slidably mounted on the support assembly. The ends of all the top posts 804 are in contact with the drive rod 705. The drive rod 705 is fixedly connected to the transmission rod 707 via the connecting rod 706. The two ends of the transmission rod 707 are respectively fixedly connected to two adjusting rods 604. When any vacuum bubble 2 loses vacuum, the top post 804 in the sensing mechanism 8 on the vacuum bubble 2 extends outward, thereby pushing the drive rod 705 to move horizontally. When the drive rod 705 moves, it drives the transmission rod 707 to move via the connecting rod 706, which in turn drives the two adjusting rods 604 to move. When the adjusting rods 604 move, they drive the locking plate 602 to move, so that the two locking plates 602 lock the closing rod 5 and the opening rod 4 respectively.

[0039] In this embodiment, preferably, the support assembly includes a support rod 701, a guide rail 702, and a mounting base 704. The support rod 701 is fixedly mounted on the transmission box 1, the guide rail 702 is fixedly mounted on the top end of the support rod 701, a slider 703 is slidably mounted inside the guide rail 702, the mounting base 704 is fixedly mounted on the top end of the slider 703, and the drive rod 705 passes through the mounting base 704 and is fixedly connected to the mounting base 704; thereby realizing the sliding connection between the drive rod 705 and the support assembly to support the drive rod 705.

[0040] In this embodiment, preferably, a second protective plate 708 is slidably disposed on the upper surface of the guide rail 702. The bottom wall of the second protective plate 708 is in contact with the top wall of the guide rail 702. The mounting seat 704 passes through the second protective plate 708 and is fixedly connected to the second protective plate 708. By setting the second protective plate 708, the top opening of the guide rail 702 can be closed, thereby protecting the internal structure of the guide rail 702 and preventing external dust from entering the guide rail 702.

[0041] Please see Figures 4-6In this embodiment of the invention, four magnetic blocks 607 are fixedly installed on the upper surface of the mounting box 601. The four magnetic blocks 607 are arranged in pairs on both sides of the protective plate 605, and the four magnetic blocks 607 are distributed in a rectangular array. Locking rods 606 are fixedly installed on both sides of the protective plate 605. The locking rods 606 are located between two magnetic blocks 607 on the same side. When the locking rods 606 and magnetic blocks 607 come into contact, the locking rods 606 and magnetic blocks 607 are magnetically attracted. The locking rods 606 are provided with iron material so that the magnetic blocks 607 and locking rods 606 can be magnetically attracted.

[0042] In this embodiment, preferably, a connecting plate 709 is fixedly installed in the middle of the transmission rod 707, and a pull ring 710 is fixedly installed at the end of the connecting plate 709 away from the transmission rod 707. To prevent animals from accidentally touching the closing rod 5 and the opening rod 4, the closing rod 5 and the opening rod 4 can be manually locked by two locking mechanisms 6. When locking, the transmission rod 707 is pulled outward by the pull ring 710, thereby driving the locking plate 602 to move through the adjusting rod 604, so that the two locking plates 602 lock the closing rod 5 and the opening rod 4. At the same time, when the adjusting rod 604 moves, it synchronously drives the guard plate 605 to move, thereby driving the locking rod 606 to move, so that the locking rod 606 contacts the outer magnetic block 607, so that the locking rod 606 and the magnetic block 607 are magnetically attracted, and then... The guard plate 605 and the adjusting rod 604 are locked to prevent the locking plate 602 from sliding within the mounting box 601. This embodiment allows the locking mechanism 6 to not only lock the closing rod 5 and the opening rod 4 when the vacuum bulb 2 malfunctions, but also to automatically move the transmission rod 707 to lock the closing rod 5 and the opening rod 4, preventing accidental movement. It should be noted that when the vacuum bulb 2 malfunctions, the tension spring 805 contracts, causing the top column 804 to move outwards. When the transmission rod 707 is moved to unlock, the contraction force of the tension spring 805 causes the transmission rod 707 to reset after movement, preventing the locking mechanism 6 from unlocking. Therefore, it does not interfere with the locking mechanism 6's locking of the closing rod 5 and the opening rod 4 when the vacuum bulb 2 malfunctions.

[0043] Working principle: During normal operation, the sensing cylinder 801 of the sensing mechanism 8 is connected to the inner cavity of the vacuum bubble 2 through the connecting port 802. The negative pressure in the vacuum bubble 2 causes the valve disc 803 to tightly seal the connecting port 802. At the same time, the tension spring 805 is in a stretched state. The top column 804 and the drive rod 705 of the transmission mechanism 7 are in contact but do not apply force. The locking plate 602 of the locking mechanism 6 is retracted into the mounting box 601. The closing rod 5 and the opening rod 4 can pull the valve shaft 3 to rotate through the end ring to realize the closing and opening operations of the circuit breaker. The bellows 807 of the sensing mechanism 8 seals the inner cavity of the sensing cylinder 801 to prevent external gas from affecting the life of the valve disc 803. The first protective plate 605 and the second protective plate 708 respectively provide dust protection for the slide groove 603 and the guide rail 702 of the mounting box 601.

[0044] When any vacuum bubble 2 loses vacuum, its internal negative pressure disappears, and the tension spring 805 pulls the valve disc 803 away from the connecting port 802, causing the top column 804 to extend outward and push the drive rod 705. The drive rod 705 drives the transmission rod 707 to move through the connecting rod 706, which in turn pulls the adjusting rods 604 of the two locking mechanisms 6, so that the locking plate 602 extends out of the mounting box 601 and is located above the closing rod 5 and the opening rod 4 respectively, realizing the mechanical locking of the two. When the valve disc 803 moves, it presses the alarm switch 809, and sends an alarm to the remote terminal through the signal transmission module. In addition, manual locking can be achieved by pulling the transmission rod 707 through the pull ring 710. At this time, the guard plate 605 drives the locking rod 606 to be magnetically fixed with the magnetic block 607, ensuring reliable locking. In the event of a fault, the tension of the tension spring 805 can prevent the locking mechanism 6 from mis-locking.

[0045] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. A primary and secondary integrated pole-mounted circuit breaker, comprising a transmission box (1), a plurality of vacuum bulbs (2) fixedly mounted on the transmission box (1), and a valve shaft (3) rotatably mounted on the transmission box (1), wherein a closing rod (5) and a opening rod (4) are fixedly mounted on both sides of the valve shaft (3), characterized in that: The transmission box (1) is provided with two locking mechanisms (6) for locking the closing lever (5) and the opening lever (4). Each of the multiple vacuum bulbs (2) is provided with a sensing mechanism (8). The sensing mechanism (8) is used to detect whether the vacuum bulb (2) has lost vacuum. The transmission box (1) is provided with a transmission mechanism (7). When the sensing mechanism (8) detects that the vacuum bulb (2) has lost vacuum, the sensing mechanism (8) drives the two locking mechanisms (6) through the transmission mechanism (7) to lock the closing lever (5) and the opening lever (4).

2. The integrated primary and secondary pole-mounted circuit breaker according to claim 1, characterized in that: The sensing mechanism (8) includes a sensing cylinder (801), a top column (804), a valve disc (803), and a tension spring (805). The sensing cylinder (801) is fixedly installed on the vacuum bubble (2). One end of the sensing cylinder (801) is connected to a connecting port (802), which is connected to the inner cavity of the vacuum bubble (2). A valve disc (803) for sealing the connecting port (802) is slidably installed inside the sensing cylinder (801). The top column (804) penetrates the side wall of the sensing cylinder (801) away from the connecting port (802). The tension spring (805) is installed inside the sensing cylinder (801). One end of the tension spring (805) is fixedly connected to the valve disc (803), and the other end of the tension spring (805) is fixedly connected to the inner side wall of the sensing cylinder (801). The tension spring (805) is in a stretched state. The top column (804) is connected to the transmission mechanism (7).

3. The integrated primary and secondary pole-mounted circuit breaker according to claim 2, characterized in that: A disc (806) is fixedly fitted onto one end of the top column (804) extending out of the sensing cylinder (801). A corrugated pipe (807) is provided between the disc (806) and the sensing cylinder (801). One end of the corrugated pipe (807) is fixedly connected to the disc (806), and the other end of the corrugated pipe (807) is fixedly connected to the side wall of the sensing cylinder (801). The inner cavity of the corrugated pipe (807) is connected to the inner cavity of the sensing cylinder (801), and neither the inner cavity of the corrugated pipe (807) nor the inner cavity of the sensing cylinder (801) is connected to the outside.

4. A primary and secondary integrated pole-mounted circuit breaker according to claim 2, characterized in that: The locking mechanism (6) includes a mounting box (601), a locking plate (602), and an adjusting rod (604). The mounting box (601) is fixedly mounted on the transmission box (1). The locking plate (602) is slidably mounted inside the mounting box (601). A sliding groove (603) is provided on the top of the mounting box (601). The adjusting rod (604) passes through the sliding groove (603) and slides with the sliding groove (603). The bottom end of the adjusting rod (604) is fixedly connected to the locking plate (602). When both locking plates (602) extend out of the mounting box (601), the two locking plates (602) are respectively located above the closing rod (5) and the opening rod (4), so that the closing rod (5) and the opening rod (4) cannot rotate.

5. A primary and secondary integrated pole-mounted circuit breaker according to claim 4, characterized in that: The transmission mechanism (7) includes a drive rod (705), a connecting rod (706), a transmission rod (707), and a support assembly. The support assembly is mounted on the transmission box (1). The drive rod (705) is slidably mounted on the support assembly. The ends of all the top columns (804) are in contact with the drive rod (705). The drive rod (705) is fixedly connected to the transmission rod (707) through the connecting rod (706). The two ends of the transmission rod (707) are fixedly connected to two adjusting rods (604) respectively.

6. A primary and secondary integrated pole-mounted circuit breaker according to claim 5, characterized in that: The support assembly includes a support rod (701), a guide rail (702), and a mounting base (704). The support rod (701) is fixedly mounted on the transmission box (1). The guide rail (702) is fixedly mounted on the top end of the support rod (701). A slider (703) is slidably mounted inside the guide rail (702). The mounting base (704) is fixedly mounted on the top end of the slider (703). The drive rod (705) passes through the mounting base (704) and is fixedly connected to the mounting base (704).

7. A primary and secondary integrated pole-mounted circuit breaker according to claim 2, characterized in that: An installation block (808) is fixedly installed inside the sensor cylinder (801), and an alarm switch (809) is fixedly installed on the installation block (808). When the valve disc (803) moves away from the communication port (802), the valve disc (803) presses the alarm switch (809), and the alarm switch (809) is connected to the remote terminal signal through the signal transmission module.

8. A primary and secondary integrated pole-mounted circuit breaker according to claim 5, characterized in that: A protective plate (605) is slidably disposed on the upper surface of the mounting box (601). The bottom wall of the protective plate (605) is in contact with the top wall of the mounting box (601). The adjusting rod (604) passes through the protective plate (605) and is fixedly connected to the protective plate (605).

9. A primary and secondary integrated pole-mounted circuit breaker according to claim 8, characterized in that: Four magnetic blocks (607) are fixedly installed on the upper surface of the mounting box (601). The four magnetic blocks (607) are arranged in pairs on both sides of the first guard plate (605) and are distributed in a rectangular array. Locking rods (606) are fixedly installed on both sides of the first guard plate (605). The locking rods (606) are located between two magnetic blocks (607) on the same side. A connecting plate (709) is fixedly installed in the middle of the transmission rod (707). A pull ring (710) is fixedly installed at the end of the connecting plate (709) away from the transmission rod (707).

10. A primary and secondary integrated pole-mounted circuit breaker according to claim 6, characterized in that: A second guard plate (708) is slidably disposed on the upper surface of the guide rail (702). The bottom wall of the second guard plate (708) is in contact with the top wall of the guide rail (702). The mounting seat (704) passes through the second guard plate (708) and is fixedly connected to the second guard plate (708).

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