Pole-mounted circuit breaker for outdoor photovoltaic power generation system

Abstract

The invention discloses a pole-mounted circuit breaker for an outdoor photovoltaic power generation system, and relates to the technical field of circuit breakers, the pole-mounted circuit breaker comprises a mechanism box, a plurality of solid-sealed polar poles mounted outside the mechanism box and current transformers mounted on the solid-sealed polar poles, arc extinguish chambers are arranged in the solid-sealed polar poles, and wire inlet ends are arranged at the top ends of the outer parts of the solid-sealed polar poles; the outer side of the current transformer is provided with a wire inlet end, a static contact arranged in the arc extinguish chamber is electrically connected with the wire inlet end, and a moving contact arranged in the arc extinguish chamber is electrically connected with the wire outlet end. The adjusting mechanism capable of finely adjusting the moving contact is arranged, the pressure detection piece is arranged to detect the elastic tension of the spring operation mechanism at any time, the displacement detection piece is arranged to detect the displacement of the adjusting mechanism at any time, and once the spring operation mechanism has the phenomena of spring aging and mechanical clamping stagnation, the moving contact can be adjusted. And the mechanism control unit can timely and quickly identify and judge, and adjust the moving contact to be tightly attached to the static contact, so that the effect of maintaining the normal operation of the circuit is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and particularly to a pole-mounted circuit breaker for an outdoor photovoltaic power generation system. Background Art

[0002] Photovoltaic power generation grid connection means that the direct current generated by solar modules is converted into alternating current that meets the requirements of the municipal power grid through a grid-connected inverter and then directly connected to the public power grid. The grid connection of a photovoltaic power generation system is divided into two forms: centralized grid connection and decentralized grid connection.

[0003] Among them, decentralized grid connection is also known as distributed photovoltaic power generation grid connection. Its characteristic is that the generated electric energy is directly distributed to the electrical load, and the excess or insufficient power is adjusted by connecting to the large power grid. The power exchange with the large power grid may be two-way, which is suitable for small-scale photovoltaic power generation systems. Usually, urban photovoltaic power generation systems adopt this method, especially photovoltaic systems combined with buildings.

[0004] The pole-mounted circuit breaker for a distributed photovoltaic grid-connected system is usually installed on an electric pole. The pole-mounted circuit breaker generally consists of an arc extinguishing chamber, a mechanism box, a current transformer, and a solid-sealed pole column. The vacuum arc extinguishing chamber mainly consists of an airtight insulating shell, a conductive system, a shielding system, contacts, and bellows, etc. The contacts are the parts that generate and extinguish the arc. The contacts are divided into static contacts and moving contacts. The static contacts and moving contacts are butted up and down and are respectively connected to the conductive rod. When the circuit is working normally, the moving contact and the static contact are in close contact. When the circuit is working abnormally, the moving contact and the static contact are separated.

[0005] Currently, the movement of the moving contact in the vacuum arc extinguishing chamber often relies on setting a spring operating mechanism externally to complete. When the static contact and the moving contact are separated, the spring operating mechanism is in the tripped state. When the static contact and the moving contact are in contact, it is in the closed state. For the closing and tripping of the spring operating mechanism, on the one hand, when the circuit experiences multiple abnormal operations, the spring in the spring operating mechanism will experience multiple compressions and releases, which easily leads to its fatigue or aging. After long-term use, the movement distance of the moving contact driven by the spring operating mechanism is affected, so that it is not enough to maintain the stable electrical contact between the static contact and the moving contact, and even a gap may be generated between the two, directly causing arc or voltage instability. Secondly, this spring operating mechanism may also have mechanical jamming phenomena, and it is difficult to detect and judge when it is located at a high altitude, thus affecting the reliability of closing and tripping.

[0006] Therefore, the present invention provides a pole-mounted circuit breaker for an outdoor photovoltaic power generation system. Summary of the Invention

[0007] In view of the deficiencies of the prior art, the present invention provides a pole-mounted circuit breaker for an outdoor photovoltaic power generation system, which solves the problems that the spring operating mechanism of the circuit breaker is vulnerable to insufficient spring elastic tension when opening and closing, affecting the voltage, and it is not easy to detect after the spring operating mechanism appears mechanical jamming compared with the prior art.

[0008] To achieve the above objectives, the present invention is realized through the following technical solutions: A pole-mounted circuit breaker for an outdoor photovoltaic power generation system includes a mechanism box, a plurality of solid-sealed poles installed outside the mechanism box, and current transformers installed on the solid-sealed poles. An arc extinguishing chamber is provided inside the solid-sealed pole, and an incoming line terminal is provided at the outer top. An outgoing line terminal is provided outside the current transformer. It further includes: A static contact, fixedly arranged in the arc extinguishing chamber and electrically connected to the incoming line terminal; A moving contact, movably arranged in the arc extinguishing chamber and electrically connected to the outgoing line terminal; A push rod, movably penetrating the bottom end of the solid-sealed pole and the top end of the mechanism box. A fixed disk is fixedly connected to the bottom end of the push rod; A spring operating mechanism, including a cross beam column fixedly connected inside the mechanism box. Three groups of pressure plates are movably connected to the cross beam column. The number of each group of pressure plates is two, and a connecting plate is fixedly connected between each group of pressure plates. An installation groove is provided on the pressure plate, and a fastening bolt penetrates through the installation groove. One end of the fastening bolt is fixedly connected to a pressure detection component, and a first spring is connected to the outside of the pressure detection component; An adjustment mechanism, including two movable plates movably connected to the left and right sides of the fixed disk. A vertical plate is movably connected to the bottom end of each of the two movable plates. A displacement detection component is installed on the side of each of the two vertical plates. An expansion link is installed and connected between two opposite displacement detection components; A mechanism control unit, which detects and judges the elastic force value of the first spring and the expansion and contraction value of the expansion link in the adjustment mechanism according to the pressure detection component and the displacement detection component.

[0009] Preferably, a first conductive rod is fixedly connected between the static contact and the incoming line terminal, and a second conductive rod is fixedly connected between the moving contact and the outgoing line terminal. The number of the solid-sealed poles and the current transformers is the same and they are all located outside the mechanism box. The static contact and the moving contact are vertically corresponding.

[0010] Preferably, the cross beam column penetrates through the middle position of the pressure plate. The connecting plate is close to the inner wall of the mechanism box. A switching control component is further provided on the side wall of the mechanism box. The connecting plate is connected to the gate plate on the switching control component.

[0011] Preferably, the top end of the push rod is fixedly connected to the bottom end of the second conductive rod. The two fixed disks are symmetrically distributed about the push rod, and there are gaps between both fixed disks and the inner wall of the mechanism box. Symmetrically distributed top rods are fixedly connected to the front and rear sides of each fixed disk. The bottom end of the top rod is fixedly connected to a support block, and the other end of each pressing plate is movably connected to the outer surface of the support block.

[0012] Preferably, it further includes a driving mechanism. The driving mechanism includes a protective box fixedly installed on the inner wall of the mechanism box. Two opposite rack plates are arranged inside the protective box. The same gear is meshed between the two opposite rack plates. A positive and negative motor for driving the gear to rotate is installed inside the protective box. The other end of the rack plate is fixedly connected to the vertical plate. The two top rods are symmetrically distributed about the push rod in the front and rear directions, and there are gaps between the two top rods and the mechanism box and the protective box respectively.

[0013] Preferably, the two movable plates in the adjusting mechanism are inclined plates, and the outer side surfaces of the two vertical plates are respectively in movable contact with the inner wall of the mechanism box.

[0014] Preferably, the displacement detection member in the adjusting mechanism is a displacement sensor, which is arranged at both ends of the telescopic rod to detect the telescopic length value of the telescopic rod. A second spring is also sleeved on the outer surface of the telescopic rod.

[0015] Preferably, the rack plate in the driving mechanism is perpendicularly distributed to the vertical plate and movably penetrates the side wall of the protective box.

[0016] Preferably, two limiting grooves for restricting the horizontal sliding connection of the rack plate are arranged inside the protective box. There is a fixed gap between the left and right side surfaces of the protective box and the vertical plate for the movement of the two opposite vertical plates.

[0017] Preferably, the other end of the first spring is fixedly connected inside the mechanism box, and the pressure detection member is a pressure sensor for detecting the elastic tension of the first spring during its expansion and contraction.

[0018] Beneficial effects The present invention provides a pole-mounted circuit breaker for an outdoor photovoltaic power generation system. Compared with the prior art, it has the following beneficial effects: 1. For the pole-mounted circuit breaker used in the outdoor photovoltaic power generation system, when the spring in the spring operating mechanism of the circuit breaker ages, the moving contact and the static contact will be abnormally contacted or even have a gap, directly causing unstable circuit voltage. By setting an adjustment mechanism that can finely adjust the moving contact, a pressure detection component is set so that the pressure sensor constantly detects the elastic tension of Spring 1, and a displacement detection component is set so that the displacement sensor constantly detects the displacement distance of the telescopic rod. Once the spring operating mechanism shows phenomena such as spring aging and mechanical jamming, the mechanism control unit can promptly identify and judge, and reconnect the moving contact and the static contact tightly in time, achieving the effect of maintaining the normal operation of the circuit.

[0019] 2. For the pole-mounted circuit breaker used in the outdoor photovoltaic power generation system, by setting a driving mechanism, when the circuit is abnormal, the mechanism control unit quickly controls the driving mechanism to respond, and then the driving forward and reverse motor drives the gear to rotate. The two rack plates move relatively or towards each other under the drive of the gear, thereby driving the two vertical plates to move at the same distance, and then driving the two movable plates to deflect at the same angle in different directions, causing the fixed disk, the push rod, the second conductive rod, and the moving contact to move upward as a whole, making the moving contact and the static contact contact tightly again, making the opening and closing actions of the circuit breaker faster and more reliable, and effectively improving the response speed of the equipment.

[0020] 3. For the pole-mounted circuit breaker used in the outdoor photovoltaic power generation system, by setting both the driving mechanism and the adjustment mechanism inside the spring operating mechanism and combining them for operation, it has the advantages of a compact structure, reduced occupied space, and faster response. At the same time, the structures of the driving mechanism and the adjustment mechanism are simpler, reducing the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional view of the overall structure of the circuit breaker of the present invention; Figure 2 is a schematic diagram of the internal structure of the mechanism box of the circuit breaker of the present invention; Figure 3 is a schematic diagram of the internal structure of the arc extinguishing chamber of the present invention; Figure 4 is a schematic diagram of the structure of the spring operating mechanism located inside the mechanism box of the present invention; Figure 5 is a schematic diagram of the internal structure of the mechanism box of the present invention; Figure 6 is a schematic diagram of the connection of the mechanism box, the solid-sealed pole column, and the current transformer of the present invention; Figure 7 is a schematic diagram of the structure connected to the bottom of the solid-sealed pole column of the present invention; Figure 8 is an exploded view of the internal structure of the protective box installed inside the spring operating mechanism of the present invention.

[0022] In the figure: 1. Mechanism box; 11. Crossbeam column; 12. Pressure plate; 121. Installation groove; 13. Connecting plate; 14. First spring; 141. Fastening bolt; 142. Pressure detection component; 2. Sealed pole column; 21. Arc extinguishing chamber; 22. First conductive rod; 221. Static contact; 23. Second conductive rod; 231. Moving contact; 24. Inlet terminal; 3. Current transformer; 31. Outlet terminal; 4. Push rod; 41. Fixed disk; 411. Thrust rod; 412. Support block; 42. Movable plate; 421. Vertical plate; 422. Displacement detection component; 423. Telescopic rod; 424. Second spring; 5. Protection box; 51. Limit groove; 511. Rack plate; 512. Gear. Specific implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figure 1-8 , the present invention provides the following technical solutions: A pole-mounted circuit breaker for an outdoor photovoltaic power generation system, including a mechanism box 1, a plurality of sealed pole columns 2 installed outside the mechanism box 1, and a current transformer 3 installed on the sealed pole column 2. An arc extinguishing chamber 21 is arranged inside the sealed pole column 2, and an inlet terminal 24 is arranged at the outer top end. An outlet terminal 31 is arranged outside the current transformer 3. The number of the sealed pole columns 2 and the current transformers 3 is the same and they are both located outside the mechanism box 1. The static contact 221 and the moving contact 231 are vertically corresponding. It further includes: The static contact 221 is fixedly arranged in the arc extinguishing chamber 21 and is electrically connected to the inlet terminal 24; The moving contact 231 is movably arranged in the arc extinguishing chamber 21 and is electrically connected to the outlet terminal 31; A first conductive rod 22 is fixedly connected between the static contact 221 and the incoming line terminal 24, and a second conductive rod 23 is fixedly connected between the moving contact 231 and the outgoing line terminal 31. The number of solid-sealed pole columns 2 and current transformers 3 is the same and they are both located outside the mechanism box 1. The static contact 221 and the moving contact 231 are vertically corresponding. During operation, the mechanism box 1 is provided to facilitate the installation of the circuit breaker on a pole or other electrical equipment. When accessing the circuit, the static contact 221 and the moving contact 231 in the arc extinguishing chamber 21 are first adjusted to a separated state. At this time, the circuit breaker is in an open state. Subsequently, the input end of the circuit is connected to the incoming line terminal 24 and output along the outgoing line terminal 31. Finally, the circuit breaker is closed to tightly connect the static contact 221 and the moving contact 231, realizing the connection of the circuit; The push rod 4 movably penetrates through the bottom end of the solid-sealed pole column 2 and the top end of the mechanism box 1. The top end of the push rod 4 is fixedly connected to the bottom end of the second conductive rod 23. A fixed disk 41 is fixedly connected to the bottom end of the push rod 4. Two symmetric ejector rods 411 are fixedly connected to the front and rear sides of the fixed disk 41. The bottom end of the ejector rod 411 is fixedly connected to a support block 412. The two fixed disks 41 are symmetrically distributed about the push rod 4, and there is a gap between each of the two fixed disks 41 and the inner wall of the mechanism box 1. The two ejector rods 411 are symmetrically distributed about the push rod 4 in the front and rear directions, and there are gaps between the two ejector rods 411 and the mechanism box 1 and the protective box 5 respectively, so that the movements of the two mechanisms do not interfere with each other. The push rod 4, the fixed disk 41, the ejector rod 411, and the support block 412 move up and down synchronously, all of which are used to indirectly drive the moving contact 231 to contact the static contact 221, achieving the function of closing the circuit.

[0025] As an embodiment of the present invention, a spring operating mechanism includes a cross beam column 11 fixedly connected inside the mechanism box 1. Three sets of pressing plates 12 are movably connected to the cross beam column 11. The other end of the pressing plate 12 is movably connected to the outer surface of the support block 412. The number of each set of pressing plates 12 is two, and a connecting plate 13 is fixedly connected between each set of pressing plates 12. An installation groove 121 is formed in the pressing plate 12. A fastening bolt 141 penetrates through the installation groove 121. One end of the fastening bolt 141 is fixedly connected to a pressure detection member 142. A first spring 14 is connected to the outside of the pressure detection member 142. The other end of the first spring 14 is fixedly connected to the inside of the mechanism box 1. The pressure detection member 142 is a pressure sensor, which is used to detect the elastic tension of the first spring 14 during expansion and contraction; Among them, the crossbeam column 11 passes through the middle position of the pressure plate 12, the connecting plate 13 is close to the inner wall of the mechanism box 1, and a closing and opening control member is also provided on the side wall of the mechanism box 1. The connecting plate 13 is connected to the gate plate on the closing and opening control member. During the closing and opening process, the connecting plate 13 is driven to move up and down by adjusting the closing and opening control member. Since the position of the crossbeam column 11 is fixed, the pressure plate 12, the connecting plate 13 and the crossbeam column 11 form a lever structure. Therefore, when the connecting plate 13 moves up and down, the support block 412, the ejector rod 411, the fixed disk 41 and the push rod 4 can be driven to move up and down by the pressure plate 12, and then the moving contact 231 is driven to move to complete the closing operation. When an abnormality occurs in the circuit, the static contact 221 and the moving contact 231 in the arc extinguishing chamber 21 are automatically separated, and the moving contact 231 is driven to re-contact the static contact 221 to close the circuit to restore normal operation through the above steps.

[0026] As an embodiment of the present invention, the adjusting mechanism includes two movable plates 42 movably connected to the left and right sides of the fixed disk 41. The bottom ends of the two movable plates 42 are respectively movably connected with a vertical plate 421. Displacement detection members 422 are installed on the sides of the two vertical plates 421. An expansion link 423 is installed and connected between two opposite displacement detection members 422. The two movable plates 42 in the adjusting mechanism are inclined plates, and the outer surfaces of the two vertical plates 421 are respectively in movable contact with the inner wall of the mechanism box 1. The displacement detection member 422 in the adjusting mechanism is a displacement sensor, which is arranged at both ends of the expansion link 423 to detect the expansion and contraction length value of the expansion link 423. A second spring 424 is also sleeved on the outer surface of the expansion link 423. The two ends of the second spring 424 are respectively fixedly connected to the displacement detection member 422 and expand and contract with the expansion and contraction of the expansion link 423, having the effect of assisting the expansion link 423 to reset. When an abnormality occurs in the circuit, the moving contact 231 is separated from the static contact 221, and the moving contact 231 drops, so that each component in the spring operating mechanism and the adjusting mechanism will generate displacement.

[0027] As an embodiment of the present invention, the driving mechanism includes a protective box 5 fixedly installed on the inner wall of the mechanism box 1. Inside the protective box 5, there are two opposite rack plates 511. A same gear 512 is engaged between the two opposite rack plates 511. Inside the protective box 5, there is a forward and reverse motor installed to drive the rotation of the gear 512. The other end of the rack plate 511 is fixedly connected to the vertical plate 421. The rack plate 511 in the driving mechanism is perpendicularly distributed to the vertical plate 421. 522 movably penetrates through the side wall of the protective box 5. Inside the protective box 5, there are two limiting grooves 51 for restricting the horizontal sliding connection of the rack plate 511. There is a fixed gap between the left and right side surfaces of the protective box 5 and the vertical plate 421, providing a suitable moving space for the two vertical plates 421. The size of this moving space is affected by the overall length of the telescopic rod 423 and, on the other hand, by the driving mechanism. By driving the gear 512 to rotate clockwise and counterclockwise through the forward and reverse motor, the gear 512 drives the two rack plates 511 to move synchronously. According to the connection positions of the two rack plates 511 and the gear 512, the two rack plates 511 move relatively or towards each other under the drive of the gear 512, so as to ensure that the moving distances of the two vertical plates 421 are the same, and further ensure that the deflection angles of the two movable plates 42 are consistent, avoiding the adjusting mechanism from offsetting the push rod 4, thereby ensuring that the push rod 4 always moves vertically.

[0028] As an embodiment of the present invention, the mechanism control unit judges the elastic force value of the first spring 14 and the telescopic value of the telescopic rod 423 in the adjusting mechanism according to the pressure and displacement information values detected by the pressure detection member 142 and the displacement detection member 422, and then controls the driving mechanism to adjust the position of the moving contact 231, so that the pressure detection member 142 always detects the elastic tension of the first spring 14. According to the preset pressure range of the pressure detection member 142, and then comparing the actual pressure magnitude and displacement distance detected by the pressure detection member 142 and the displacement detection member 422, the pressure sensor and the displacement sensor transmit the detected information to the controller of the mechanism control unit. The controller judges whether the elastic tension of the first spring 14 and the telescopic distance of the telescopic rod 423 are qualified. When either the elastic tension of the first spring 14 or the telescopic distance of the telescopic rod 423 is unqualified, it may cause the connection between the moving contact 231 and the static contact 221 to be loose, that is, the circuit will have an unstable voltage situation. Subsequently, after judgment, the controller controls the forward and reverse motor to start and drive the gear 512 to rotate. The two rack plates 511 move relatively or towards each other under the drive of the gear 512, so as to drive the two vertical plates 421 to move the same distance, and then drive the two movable plates 42 to deflect in the same angle but different directions, so that the fixed disk 41, the push rod 4, the second conductive rod 23 and the moving contact 231 move upward as a whole, so that the moving contact 231 is in close contact with the static contact 221, which is beneficial to maintaining the normal operation of the circuit.

[0029] Working principle of the present invention: The circuit breaker is installed on a utility pole or other electrical equipment. When connecting to the circuit, the static contact 221 and the moving contact 231 in the arc extinguishing chamber 21 are first adjusted to a separated state. At this time, the circuit breaker is in an open state. Subsequently, the input end of the circuit is connected to the incoming line end 24 and output along the outgoing line end 31. Finally, the circuit breaker is closed to tightly connect the static contact 221 and the moving contact 231, realizing the connection of the circuit. The pressure detection component 142 continuously detects the elastic tension of the first spring 14, and the displacement detection component 422 continuously detects the displacement distance of the telescopic rod 423. According to the pressure range preset by the pressure detection component 142, and then comparing the actual pressure magnitude and displacement distance detected by the pressure detection component 142 and the displacement detection component 422, the pressure sensor and the displacement sensor transmit the detected information to the controller of the mechanism control unit, and the controller determines whether the elastic tension of the first spring 14 and the telescopic distance of the telescopic rod 423 are qualified; When the circuit is abnormal, the moving contact 231 separates from the static contact 221, and the closing and opening control component is adjusted to drive the connecting plate 13 to move up and down. Since the position of the cross beam column 11 is fixed, the pressure plate 12, the connecting plate 13 and the cross beam column 11 form a lever structure. Therefore, when the connecting plate 13 moves up and down, the support block 412, the ejector rod 411, the fixed disk 41 and the push rod 4 can be driven to move up and down by the pressure plate 12, and then the moving contact 231 is driven to move to complete the closing operation, and the normal circuit can be restored; When one of the elastic tension of the first spring 14 or the telescopic distance of the telescopic rod 423 detected by the pressure sensor and the displacement sensor is unqualified, it may cause the connection between the moving contact 231 and the static contact 221 to be not tight, that is, the voltage of the circuit will be unstable. Subsequently, after judgment, the controller controls the start of the positive and negative motor to drive the gear 512 to rotate, and the two rack plates 511 move relatively or in opposite directions driven by the gear 512, so as to drive the two vertical plates 421 to move at the same distance, and then drive the two movable plates 42 to deflect at the same angle in different directions, so that the fixed disk 41, the push rod 4, the second conductive rod 23 and the moving contact 231 move upward as a whole, so that the moving contact 231 is in close contact with the static contact 221, which is beneficial to maintaining the normal operation of the circuit.

[0030] Meanwhile, the content not described in detail in this specification belongs to the prior art well known to those skilled in the art.

[0031] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0032] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pole-mounted circuit breaker for an outdoor photovoltaic power generation system, comprising a mechanism box (1), a plurality of sealed poles (2) mounted outside the mechanism box (1), and a current transformer (3) mounted on the sealed pole (2), wherein the sealed pole (2) is provided with an arc extinguishing chamber (21) inside and an inlet terminal (24) at the top of the outside, and an outlet terminal (31) is provided on the outside of the current transformer (3), characterized in that: Also includes: A stationary contact (221) is fixedly disposed in the arc extinguishing chamber (21) and is electrically connected to the incoming line terminal (24); A moving contact (231) movably disposed in the arc extinguishing chamber (21) and electrically connected to the outlet terminal (31); A push rod (4) movably penetrates the bottom end of the sealed pole (2) and the top end of the mechanism box (1), and the bottom end of the push rod (4) is fixedly connected to a fixing plate (41); A spring operating mechanism comprises a crossbeam (11) fixedly connected to a mechanism box (1), three groups of pressure plates (12) being movably connected to the crossbeam (11), the number of each group of pressure plates (12) being two and a connecting plate (13) being fixedly connected between each group of pressure plates (12), a mounting groove (121) being provided on the pressure plate (12), a fastening bolt (141) passing through the mounting groove (121), one end of the fastening bolt (141) being fixedly connected to a pressure detection component (142), and the outside of the pressure detection component (142) being connected to a spring 1 (14); The adjustment mechanism comprises two movable plates (42) movably connected to the left and right sides of the fixed plate (41), the bottom ends of the two movable plates (42) are respectively movably connected to a vertical plate (421), the sides of the two vertical plates (421) are both installed with displacement detection members (422), and a telescopic rod (423) is installed and connected between the two opposite displacement detection members (422); The mechanism control unit determines the elastic force value of the spring 1 (14) and the telescopic value of the telescopic rod (423) in the adjustment mechanism based on the detection of the pressure detection component (142) and the displacement detection component (422).

2. A pole-mounted circuit breaker for an outdoor photovoltaic power generation system according to claim 1, characterized in that: A first conductive rod (22) is fixedly connected between the static contact (221) and the incoming line terminal (24), a second conductive rod (23) is fixedly connected between the moving contact (231) and the outgoing line terminal (31), the number of the sealed poles (2) and the current transformer (3) are the same and both are located outside the mechanism box (1), and the static contact (221) and the moving contact (231) correspond to each other up and down.

3. A pole mounted circuit breaker for an outdoor photovoltaic power generation system according to claim 1, characterized in that: The crossbeam column (11) passes through the middle of the pressure plate (12), the connecting plate (13) is close to the inner wall of the mechanism box (1), a switch opening and closing control panel is also provided on the side wall of the mechanism box (1), and the connecting plate (13) is connected to the gate plate on the switch opening and closing control panel.

4. A pole-mounted circuit breaker for an outdoor photovoltaic power generation system according to claim 1, characterized in that: The top end of the push rod (4) is fixedly connected to the bottom end of the second conductive rod (23), the two fixed plates (41) are symmetrically distributed about the push rod (4), and a gap is provided between the two fixed plates (41) and the inner wall of the mechanism box (1), two symmetrical push rods (411) are fixedly connected to the front and rear sides of the fixed plates (41), the bottom end of the push rod (411) is fixedly connected to a support block (412), and the other end of each pressing plate (12) is movably connected to the outer surface of the support block (412).

5. The pole-mounted circuit breaker for an outdoor photovoltaic power generation system according to claim 1, characterized in that: It also includes a driving mechanism, the driving mechanism including a protection box (5) fixedly mounted on the inner wall of the mechanism box (1), two opposing rack plates (511) being arranged inside the protection box (5), a same gear (512) being meshed between the two opposing rack plates (511), a forward and reverse motor for driving the gear (512) to rotate being installed inside the protection box (5), and the other end of the rack plate (511) being fixedly connected to the vertical plate (421); The two push rods (411) are symmetrically distributed front and rearward with respect to the push rod (4), and gaps are respectively provided between the two push rods (411) and the mechanism box (1) and the protection box (5).

6. A pole mounted circuit breaker for an outdoor photovoltaic power generation system according to claim 1, characterized in that: The two movable plates (42) in the adjustment mechanism are inclined plates, and the outer surfaces of the two vertical plates (421) are in movable contact with the inner wall of the mechanism box (1) respectively.

7. A pole mounted circuit breaker for an outdoor photovoltaic power generation system according to claim 1, characterized in that: The displacement detection member (422) in the adjustment mechanism is a displacement sensor, which is arranged at both ends of the telescopic rod (423) and is used to detect the telescopic length value of the telescopic rod (423). The outer surface of the telescopic rod (423) is also sleeved with a second spring (424).

8. The pole-mounted circuit breaker for an outdoor photovoltaic power generation system according to claim 1, characterized in that: The rack plate (511) in the driving mechanism is vertically distributed with the vertical plate (421), and (522) movably penetrates the side wall of the protection box (5).

9. A pole mounted circuit breaker for an outdoor photovoltaic power generation system according to claim 1, characterized in that: Two limiting grooves (51) for limiting the horizontal sliding connection of the rack plate (511) are arranged inside the protection box (5), and a fixed gap is arranged between the left and right side surfaces of the protection box (5) and the vertical plate (421) for relative movement of the two vertical plates (421).

10. The pole-mounted circuit breaker for an outdoor photovoltaic power generation system according to claim 1, characterized in that: The other end of the spring one (14) is fixedly connected to the inside of the mechanism box (1), and the pressure detection member (142) is a pressure sensor for detecting the elastic tension of the spring one (14) during expansion and contraction.

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