Primary and secondary fusion complete column-mounted circuit breaker convenient to install

Abstract

The invention relates to the technical field of circuit breakers, and discloses a convenient-to-install primary and secondary fusion complete column-mounted circuit breaker, which comprises a bearing base, a plurality of circuit breaker bodies are arranged at the top of the bearing base, and corresponding arc chute covers and connecting knife switches are respectively arranged on the surface of the front end of the bearing base corresponding to the number of the circuit breaker bodies. An arc extinguishing grid plate used for segmenting and extinguishing electric arcs is installed in the arc extinguishing grid cover. During power-off operation, an insulating stick drives a knife switch to be switched off, a first gear-rack mechanism pushes an extrusion plate to compress hydraulic oil, the hydraulic oil is injected into a liquid storage bag after breaking through a limit, and an upper connecting plate and a lower connecting plate are triggered to perform bidirectional driving; and a tapered isobaric gradient layout is formed. According to the layout, the grid plate spacing is reduced compared with the initial spacing, and multi-stage arc segmentation is realized; meanwhile, the expanded inert gas channel enables the gas flow rate to be increased, and the arc extinguishing effect is improved through the dual effects of medium cooling and air pressure impact.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and specifically to a primary-secondary integrated pole-mounted circuit breaker that is easy to install. Background Technique

[0002] A circuit breaker is an essential circuit component in a circuit. It is a current switching device that can open, close, and carry abnormal loop currents, and is an important part to ensure circuit safety; the transportation of electricity is a complex process. In the case of long-distance power transmission, circuit breakers are electrical appliances with a very large usage volume. Generally, a circuit breaker is set at regular intervals; currently, ordinary circuit breakers do not integrate electronic control technology and must rely on a distribution automation master station and communication, while a primary-secondary integrated pole-mounted circuit breaker is a type of circuit breaker that integrates leading electronic components in the industry and can achieve distribution automation functions without relying on a distribution automation master station and communication.

[0003] In the existing primary-secondary integrated pole-mounted circuit breaker, the opening and closing operations of the circuit breaker blade and the arc extinguishing system are mostly independently designed. Although this method does not affect the use of the circuit breaker, after a long time of use, it is inevitable that the problem of inconsistent sensitivity will occur, resulting in the asynchronous release of the arc extinguishing medium and the movement of the blade, and the arc energy cannot be suppressed in time, thus causing unnecessary safety hazards.

[0004] Therefore, it does not meet the existing requirements, and for this reason, we propose a primary-secondary integrated pole-mounted circuit breaker that is easy to install. Summary of the Invention

[0005] The present invention provides a primary-secondary integrated pole-mounted circuit breaker that is easy to install. When opening the circuit breaker, the first gear-rack mechanism is used to push and squeeze the hydraulic oil, and after the hydraulic oil breaks through the limit, it is injected into the liquid storage bladder, triggering the bidirectional drive of the upper and lower connecting plates: the upper moving grid plate moves upward synchronously through the rigid connecting rod, and the three lower grid plates move downward step by step through spring transmission, forming a tapered isobaric gradient layout. This layout reduces the distance between the grid plates compared to the initial state, achieving multi-stage arc segmentation; at the same time, the expanded inert gas channel increases the gas flow rate, and the arc extinguishing effect is improved through the dual effects of medium cooling and air pressure impact, solving the problems mentioned in the above background technique.

[0006] The present invention provides the following technical solution: A primary-secondary integrated pole-mounted circuit breaker that is easy to install, including a supporting base, on the top of the supporting base, a plurality of circuit breaker bodies are installed, and on the front surface of the supporting base corresponding to the number of circuit breaker bodies, corresponding arc extinguishing grid covers and connecting blades are installed respectively. Inside the arc extinguishing grid cover, an arc extinguishing grid plate for dividing and extinguishing the arc is installed, and the arc extinguishing grid plate is composed of a fixed grid plate and a moving grid plate; Inside the arc extinguishing grid cover, an air storage bag and an air storage pipe for storing inert gas are installed, and a plurality of nozzles for spraying gas in a directional manner to accelerate the cooling of the electric arc are also installed on the air storage pipe.

[0007] As an alternative solution of the integrated primary and secondary fuse-on-column circuit breaker that is easy to install according to the present invention, wherein: a rotating seat is fixedly installed on the front surface of the supporting base, one end of a connecting rotating shaft is rotatably arranged inside the rotating seat, the other end of the connecting rotating shaft extends into the supporting base and realizes coaxial rotating support, and a fixed connection is formed between the connecting knife switch and the connecting rotating shaft.

[0008] As an alternative solution of the integrated primary and secondary fuse-on-column circuit breaker that is easy to install according to the present invention, wherein: one end of the connecting rotating shaft extending into the supporting base is fixedly sleeved with a first gear, a first rack is further arranged below the first gear, the first rack meshes with the first gear, a liquid storage cavity is further opened inside the supporting base, and a pressing plate is slidably arranged inside the liquid storage cavity.

[0009] As an alternative solution of the integrated primary and secondary fuse-on-column circuit breaker that is easy to install according to the present invention, wherein: a fixed connection is formed between the pressing plate and the first rack, a blocking plate is further slidably arranged inside the liquid storage cavity, a first spring is arranged between the blocking plate and the liquid storage cavity, and limiting parts are arranged on the top and bottom surfaces of the liquid storage cavity.

[0010] As an alternative solution of the integrated primary and secondary fuse-on-column circuit breaker that is easy to install according to the present invention, wherein: a connecting pipe is further arranged between the liquid storage cavity and the arc extinguishing grid cover, a liquid storage bag is arranged inside the arc extinguishing grid cover, one end of the connecting pipe is communicated with the liquid storage bag, and the other end of the connecting pipe is communicated with the liquid storage cavity.

[0011] As an alternative solution of the integrated primary and secondary fuse-on-column circuit breaker that is easy to install according to the present invention, wherein: two air storage bags are provided, and the two air storage bags are respectively arranged above and below the liquid storage bag, a plurality of the air storage pipes are rotatably arranged on the inner wall of the arc extinguishing grid cover, and a connecting torsion spring is arranged between the air storage pipe and the arc extinguishing grid cover.

[0012] As an alternative solution of the integrated primary and secondary fuse-on-column circuit breaker that is easy to install according to the present invention, wherein: the other end of each air storage pipe is sleeved with a second gear, the second gear meshes with the corresponding second rack, and the second rack forms a fixed connection with the corresponding moving grid plate.

[0013] As an alternative solution for the integrated primary and secondary on - column circuit breaker that is easy to install according to the present invention, wherein: the fixed grid plates and the movable grid plates are integrated in the arc extinguishing grid cover in an array arrangement. The fixed grid plates are arranged in layers at the bottom, middle and top regions of the arc extinguishing grid cover. The movable grid plates are alternately arranged between two adjacent fixed grid plates, and a dynamic arc extinguishing structure is formed through gap matching.

[0014] As an alternative solution for the integrated primary and secondary on - column circuit breaker that is easy to install according to the present invention, wherein: the movable grid plates are divided into two groups. One group of the movable grid plates is fixedly connected through a connecting rod. The other group of the movable grid plates is connected through a movable connecting rod and a fixed base. One end of the movable connecting rod is fixedly connected to a movable grid plate, and the other end of the movable connecting rod is slidably arranged inside the fixed base. The fixed base is installed on another movable grid plate, and a second spring is also arranged between the movable connecting rod and the fixed base.

[0015] As an alternative solution for the integrated primary and secondary on - column circuit breaker that is easy to install according to the present invention, wherein: an electrical contact member is arranged inside the arc extinguishing grid cover, and the electrical contact member is electrically contacted with the arc extinguishing grid cover in a matching manner. Connecting through - grooves are also opened at the positions corresponding to a plurality of nozzles on the inner wall of the arc extinguishing grid cover. Mounting members for quick assembly and expansion are installed on both sides of the supporting base.

[0016] The present invention has the following beneficial effects: 1. For the integrated primary and secondary on - column circuit breaker that is easy to install, when the user performs a power - off operation, the insulating rod drives the disconnecting knife to open, drives the coaxial connecting rotating shaft to rotate, and through the first gear meshing with the first rack, the pressing plate in the liquid storage cavity is pushed to compress the hydraulic oil. After the hydraulic oil breaks through the elastic limiting member, it is injected into the corrugated liquid storage bladder through the connecting pipe, triggering the two - way drive of the upper and lower connecting plates. The upper movable grid plate moves upward synchronously through the rigid connecting rod, and the three lower movable grid plates move downward in stages through the spring transmission assembly, forming a tapered equal - pressure gradient layout. The distance is reduced compared to the initial state, realizing multi - stage arc splitting, thereby improving the arc extinguishing effect. At the same time, the increase in the distance also expands the inert gas circulation channel, thereby further improving the arc extinguishing effect.

[0017] 2. The easy-to-install integrated primary and secondary pole-mounted circuit breaker adjusts the arc gap by driving a movable grid plate with a liquid storage bag, synchronously triggers the compression and release of pre-charged inert gas by a double liquid storage bag, forms a directional jet through the nozzle array of the gas storage pipe, the nozzle angle is dynamically adjusted by a gear-rack transmission mechanism, the upper and lower gas storage pipes rotate symmetrically counterclockwise / clockwise to optimize the jet direction, and combined with the elastic reset function of the equidistant tooth grooves of the rack and the connecting torsion spring, the nozzle generates a reciprocating swing during the meshing gap period, forming a "directional + swing" composite jet mode, so as to dynamically expand the jet coverage range, thereby effectively realizing the precise directional dissipation and global suppression of arc energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the arc extinguishing grid cover structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the first cross-sectional structure of the local support base of the present invention.

[0021] Figure 4 It is a schematic diagram of the second cross-sectional structure of the local support base of the present invention.

[0022] Figure 5 It is a schematic diagram of the first cross-sectional structure of the local arc extinguishing grid cover of the present invention.

[0023] Figure 6 It is a schematic diagram of the second cross-sectional structure of the local arc extinguishing grid cover of the present invention.

[0024] Figure 7 For the present invention Figure 6 The enlarged structure schematic diagram at position A.

[0025] Figure 8 It is a schematic diagram of the gas storage pipe structure of the present invention.

[0026] In the figure: 1. Support base; 2. Mounting part; 101. Circuit breaker body; 102. Arc extinguishing grid cover; 103. Connecting knife switch; 104. Rotating seat; 105. Connecting rotating shaft; 106. First gear; 107. First rack; 108. Extrusion plate; 109. Sealing plate; 110. First spring; 111. Electrical contact part; 112. Arc extinguishing grid plate; 1121. Fixed grid plate; 1122. Movable grid plate; 113. Connecting pipe; 114. Liquid storage bag; 115. Gas storage bag; 116. Gas storage pipe; 117. Nozzle; 118. Connecting through groove; 119. Moving connecting rod; 120. Fixed base; 121. Second spring; 122. Second gear; 123. Second rack; 124. Connecting torsion spring; 125. Limiting part; 126. Liquid storage cavity. Specific Embodiments

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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 of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1. Please refer to Figures 1 - 8 , a primary-secondary integrated complete pole-mounted circuit breaker that is easy to install, including a supporting base 1. Multiple circuit breaker bodies 101 are mounted on the top of the supporting base 1, and modular mounting parts 2 are arranged on both sides thereof. The mounting part 2 is composed of a telescopic connecting rod and an adjustable sleeve, and users can adaptively adjust the installation position according to the distance between the telegraph poles. Among them, the telescopic connecting rod supports dynamic extension, and the adjustable sleeve adopts industry-standard parts, and users can flexibly adjust according to on-site requirements. Through this setting, the installation efficiency of the base can be significantly improved, ensuring that the circuit breaker body 101 can be quickly positioned and put into operation.

[0029] After the circuit breaker body 101 has been in long-term operation, routine safety inspections need to be carried out, and power-off operations must be performed before the inspections. Since the device is deployed on a primary-secondary integrated pole-mounted and under high-voltage conditions, when the power is off, the separation of the contacts is likely to cause arc discharge. If a dedicated arc extinguishing device is not configured, continuous arc discharge may cause secondary accidents such as equipment damage or electrical fires.

[0030] For this reason, corresponding arc extinguishing grid covers 102 and connecting knife switches 103 are respectively installed on the front surface of the supporting base 1 corresponding to the number of the circuit breaker bodies 101. An arc extinguishing grid plate 112 for dividing and extinguishing the arc is installed inside the arc extinguishing grid cover 102; On the one hand, referring to Figure 3 , it can be seen that a rotating seat 104 is fixedly installed on the front surface of the supporting base 1. One end of a connecting rotating shaft 105 is rotatably arranged inside the rotating seat 104, and the other end of the connecting rotating shaft 105 extends into the supporting base 1 and realizes coaxial rotational support. A fixed connection is formed between the connecting knife switch 103 and the connecting rotating shaft 105. This enables when the user performs a power-off process, the operator drives the connecting knife switch 103 to complete the opening action with the electrical contact member 111 through an insulating rod, and the rotation of the connecting knife switch 103 during opening will also drive the connecting rotating shaft 105 to rotate synchronously; Referring to Figure 4It can be seen that a first gear 106 is fixedly sleeved at one end of the connecting rotating shaft 105 extending into the supporting base 1. A first rack 107 is further arranged below the first gear 106. Therefore, when the connecting rotating shaft 105 rotates, the first gear 106 also rotates, driving the first rack 107 meshing with the first gear 106 to perform a linear displacement along the axis (refer to Figure 4 the leftward movement trajectory). Also, since a fixed connection is formed between the extrusion plate 108 slidably arranged inside the liquid storage cavity 126 and the first rack 107, the extrusion plate 108 also moves synchronously with the first rack 107. It should be noted that a certain amount of hydraulic oil is stored inside the liquid storage cavity 126. Therefore, when the extrusion plate 108 moves, the hydraulic oil will be squeezed, and then the plugging plate 109 also arranged inside the liquid storage cavity 126 will be squeezed, thereby driving the plugging plate 109 to perform Figure 4 the leftward movement in Since a limiting member 125 is also arranged inside the liquid storage cavity 126, and the limiting member 125 is composed of an elastic composite material. Therefore, when the plugging plate 109 moves and contacts the limiting member 125, the limiting member 125 will deform so that the limiting member 125 can move smoothly. It should be noted that before the plugging plate 109 moves past the limiting member 125, it plugs the connecting pipe 113. This setting is to prevent the hydraulic oil from leaking in advance before the extrusion plate 108 moves. When the plugging plate 109 moves past the limiting member 125, the plugging of the plugging plate 109 will be released, so that the hydraulic oil inside the liquid storage cavity 126 can be transported to the inside of the liquid storage bladder 114 through the connecting pipe 113.

[0031] On the other hand, referring to Figure 5 it can be seen that the liquid storage bladder 114 is arranged inside the arc extinguishing grid cover 102, and the liquid storage bladder 114 can be a corrugated liquid bladder. Connecting plates are arranged above and below the liquid storage bladder 114. At the same time, the upper end and the lower end of the connecting plate are respectively hinged to the corresponding moving grid plates 1122. This makes it so that when the liquid storage bladder 114 is gradually filled with hydraulic oil, the two moving grid plates 1122 connected by the connecting plates will respectively perform Figure 5 the upward movement and the downward movement in Referring to Figure 7 it can be seen that since each moving grid plate 1122 is equipped with a transmission assembly composed of a fixed base 120 and a moving connecting rod 119. Among them, the fixed base 120 is installed on the upper end surface of the lower moving grid plate 1122, and the moving connecting rod 119 is designed with one end fixedly connected to the upper moving grid plate 1122 and the other end extending into the chute of the fixed base 120. Inside the chute, a second spring 121 is arranged between the end of the moving connecting rod 119 and the end of the chute, forming an elastic linkage mechanism.

[0032] When the top moving grid plate 1122 moves downward under the extrusion of the liquid storage bladder 114, the second moving grid plate 1122 is driven to move synchronously through the moving connecting rod 119, and the second moving grid plate 1122 drives the third moving grid plate 1122 to move together through its fixed base 120. When the end moving grid plate 1122 reaches the stroke limit, the second spring 121 begins to produce a compressive deformation, allowing the moving grid plate 1122 in the middle position to continue moving downward within the elastic stroke range. Similarly, when the middle moving grid plate 1122 completes its additional stroke, the top moving grid plate 1122 can still achieve supplementary displacement through the second spring 121 in its own transmission mechanism.

[0033] This hierarchical braking design achieves a dual optimization effect: First, the three moving grid plates 1122 form a tapered equal-pressure gradient distribution after expansion, and the distance between the moving grid plates 1122 is reduced compared to the initial state, significantly improving the arc splitting efficiency; Second, the final positioning height of the top moving grid plate 1122 is lower than that of the fixed grid plate 1121, shifting the initial contact point of the arc towards the high-pressure area and effectively improving the distribution of the dielectric recovery strength.

[0034] Refer to Figure 5 It can be seen that since a fixed connection is formed between the upward moving grid plate 1122 and the moving grid plate 1122 above it through the connecting rod, when the moving grid plate 1122 is extruded upward by the liquid storage bladder 114, the moving grid plate 1122 above it will also move upward synchronously. And since corresponding fixed grid plates 1121 are provided above both moving grid plates 1122, when the lower moving grid plate 1122 completes its movement, it will eventually come into contact with the fixed grid plate 1121. This setting also increases the distance between the moving grid plate 1122 and the fixedly arranged fixed grid plate 1121 compared to the initial state, so that when the arc further shifts towards the high-pressure area, air and the inert gas subsequently ejected through the nozzle 117 can circulate further, thereby further controlling the arc energy diffusion path to better extinguish the arc.

[0035] When the connecting knife switch 103 performs a reset operation, the reverse rotation of the first gear 106 drives the first rack 107 to retract axially, synchronously driving the extrusion plate 108 to move towards the initial position. At this time, a negative pressure effect is generated inside the liquid storage cavity 126 due to the retraction of the extrusion plate 108. At this time, the sealing plate 109 is still within the constraint area of the limiting member 125, and the external hydraulic oil is passively refluxed into the liquid storage cavity 126 through the connecting pipe 113 under the negative pressure. After the hydraulic oil completely refluxes, through the combined action of the negative pressure effect generated by the retraction of the extrusion plate 108 and the reset elastic force of the first spring 110, the sealing plate 109 will break through the limitation of the limiting member 125 and then reset to the original sealing position, and re-form a closed state for the connecting pipe 113, so that when subsequent maintenance is carried out again, the above-mentioned moving effect can still be achieved.

[0036] With the above settings, not only can the upper movable grid plate 1122 move upward synchronously via the rigid connecting rod, but also the three lower movable grid plates 1122 can be gradually lowered through the spring transmission assembly, thereby forming a tapered isobaric gradient layout. Since the lower spacing is reduced compared to the initial state, the multi-stage splitting of the electric arc is realized, so as to improve the extinguishing effect of the electric arc. At the same time, the increase in the upper spacing also expands the inert gas flow channel, thereby further improving the extinguishing effect of the electric arc.

[0037] Embodiment 2. This embodiment aims to facilitate the solution of the problem that the electric arc may still not be extinguished only by adjusting the arc extinguishing grid plate 112. This embodiment is an improvement based on Embodiment 1. Specifically, please refer to Figures 1 - 2 , refer to Figure 5 It can be seen that the liquid storage bladder 114 is symmetrically configured with double gas storage bladders 115 up and down, and the two cavities form a closed-loop gas transmission system with the gas storage pipe 116 through the flexible connecting hose. The inert gas pre-filled in the gas storage bladder 115 is pressed into the gas storage pipe 116 through the double-axial extrusion effect when the liquid storage bladder 114 is expanded by hydraulic pressure. The gas storage pipe 116 is evenly distributed with multiple groups of directional nozzles 117 along the axial direction of the arc extinguishing grid cover 102 to form a gas jet array. This design realizes the precise release of the arc extinguishing medium through mechanical-hydraulic linkage: when the liquid storage bladder 114 expands to drive the movable grid plate 1122 to adjust the arc splitting spacing, the gas storage bladder 115 is synchronously triggered to be compressed, so that the inert gas can be injected into the newly formed grid plate gap area through the nozzle 117. This effective optimization of the medium injection timing by the strict synchronization of the displacement of the arc extinguishing grid plate 112 and the gas jet enables the high-flow inert gas to directly act on the root area of the electric arc, and realizes the directional dissipation of the electric arc energy through the triple effects of medium cooling, molecular adsorption and gas pressure impact. At the same time, when the liquid storage bladder 114 is reset later, the pre-inflated chamber of the gas storage bladder 115 can be automatically reconstructed relying on the elastic deformation. It should be noted that an intake check valve is provided on each gas storage bladder 115, and when the liquid storage bladder 114 is reset, the internal gas of the gas storage bladder 115 can be transported using the check valve to ensure the working condition stability of multi-cycle operation.

[0038] At the same time, according to Figure 6 and Figure 8In the shown structure, the gas storage pipe 116 is rotatably mounted on the arc extinguishing grid cover 102 through a rotating shaft, and the elastic reset function is realized through the connecting torsion spring 124. A second gear 122 is assembled at the end of each gas storage pipe 116, and this gear forms a meshing relationship with a second rack 123 fixed on the moving grid plate 1122. When the moving grid plate 1122 moves up and down, the linear motion of the second rack 123 will be converted into the rotation of the second gear 122, thereby driving the gas storage pipe 116 to rotate around the axis. It should be noted that the upper gas storage pipe 116 rotates counterclockwise during movement, while the lower gas storage pipe 116 rotates clockwise. This symmetrical design enables the spraying angles of all nozzles 117 to automatically adjust following the position change of the moving grid plate 1122, so as to always maintain the optimal spraying direction for the arc.

[0039] It should be noted that a connecting through groove 118 is provided on the arc extinguishing grid cover 102. The special design of this through groove allows the nozzle 117 to have a movement margin during angle deviation, so as to avoid the situation of jamming when the nozzle 117 makes a scheduling deviation.

[0040] In addition, the second rack 123 adopts an equidistant tooth groove design, and a specific empty window area is left between adjacent tooth grooves. When a certain tooth groove finishes meshing with the second gear 122, during the gap period when the subsequent tooth grooves have not yet meshed, the elastic potential energy of the connecting torsion spring 124 will drive the gas storage pipe 116 to rotate in the reverse direction, driving the nozzle 117 to generate a reciprocating swing. This periodic swing significantly expands the spraying coverage range, and when the next tooth groove meshes with the gear again, the gas storage pipe 116 enters the forward rotation state again. Through the synergistic effect of mechanical transmission and elastic reset, the nozzle 117 can not only achieve precise directional spraying, but also generate an auxiliary swing during the intermittent period, thereby forming a dynamically optimized arc suppression effect.

[0041] Through the above settings, not only can the liquid storage bladder 114 be used to drive the moving grid plate 1122 to adjust the arc gap, so that the double gas storage bladders 115 compress and release the precharged inert gas, so that the gas can be injected into the arc area through the directional nozzle 117 array of the gas storage pipe 116, and the arc can be accurately extinguished through the triple effects of cooling, adsorption and impact, but also through the meshing of the second gear 122 at the end of the gas storage pipe 116 with the second rack 123 connected to the moving grid plate 1122, the displacement of the arc extinguishing grid plate 112 is converted into the rotation angle adjustment of the nozzle 117, and the upper and lower gas storage pipes 116 rotate symmetrically counterclockwise / clockwise to optimize the spraying direction. At the same time, the equidistant tooth grooves of the second rack 123 are cooperated with the connecting torsion spring 124, so that the nozzle 117 swings in the reverse direction during the meshing gap period, forming a combined spraying mode of orientation and swing, expanding the coverage range, and further improving the arc extinguishing effect.

[0042] 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 terms "comprising", "including" or any other variant thereof are 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.

[0043] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A primary and secondary integrated pole-mounted circuit breaker that is easy to install, comprising a supporting base (1), characterized in that: A plurality of circuit breaker bodies (101) are mounted on the top of the supporting base (1); corresponding arc extinguishing grid covers (102) and connecting switches (103) are mounted on the front surface of the supporting base (1) in the number corresponding to the number of circuit breaker bodies (101); an arc extinguishing grid plate (112) for dividing and extinguishing an arc is mounted inside the arc extinguishing grid cover (102); the arc extinguishing grid plate (112) is composed of a fixed grid plate (1121) and a movable grid plate (1122); A gas storage bag (115) and a gas storage pipe (116) for storing inert gas are installed inside the arc extinguishing grid cover (102), and a plurality of nozzles (117) for directional gas ejection to accelerate arc cooling are also installed on the gas storage pipe (116).

2. The primary and secondary integrated pole mounted circuit breaker easy to install according to claim 1 is characterized in that: A rotating seat (104) is fixedly mounted on the front end surface of the supporting base (1), one end of a connecting shaft (105) is rotatably arranged inside the rotating seat (104), the other end of the connecting shaft (105) extends into the interior of the supporting base (1) and realizes coaxial rotation support, and a fixed connection is formed between the connecting knife (103) and the connecting shaft (105).

3. The primary and secondary integrated pole mounted circuit breaker easy to install according to claim 2 is characterized in that: One end of the connecting shaft (105) extending into the interior of the supporting base (1) is fixedly sleeved with a first gear (106), a first rack (107) is further provided below the first gear (106), the first rack (107) and the first gear (106) are meshed with each other, a liquid storage chamber (126) is further provided inside the supporting base (1), and an extrusion plate (108) is slidably provided inside the liquid storage chamber (126).

4. The primary and secondary integrated pole mounted circuit breaker easy to install according to claim 3 is characterized in that: The extrusion plate (108) and the first rack (107) are fixedly connected, a sealing plate (109) is slidably arranged inside the liquid storage chamber (126), a first spring (110) is arranged between the sealing plate (109) and the liquid storage chamber (126), and limiting members (125) are arranged on the top and bottom surfaces of the liquid storage chamber (126).

5. The primary and secondary integrated pole mounted circuit breaker easy to install according to claim 4, characterized in that: A connecting tube (113) is further provided between the liquid storage cavity (126) and the arc extinguishing grid cover (102); a liquid storage capsule (114) is provided inside the arc extinguishing grid cover (102); one end of the connecting tube (113) is connected to the liquid storage capsule (114); and the other end of the connecting tube (113) is connected to the liquid storage cavity (126).

6. The primary and secondary integrated pole mounted circuit breaker easy to install according to claim 1, characterized in that: Two gas storage bags (115) are provided, and the two gas storage bags (115) are respectively provided above and below the liquid storage bag (114); a plurality of gas storage pipes (116) are rotatably provided on the inner wall of the arc extinguishing grid cover (102); and a connecting torsion spring (124) is further provided between the gas storage pipes (116) and the arc extinguishing grid cover (102).

7. The primary and secondary integrated pole mounted circuit breaker easy to install according to claim 6, characterized in that: The other end of each gas storage pipe (116) is sleeved with a second gear (122), the second gear (122) and the corresponding second rack (123) are meshed with each other, and the second rack (123) and the corresponding movable grid plate (1122) are fixedly connected.

8. The primary and secondary integrated pole mounted circuit breaker easy to install according to claim 7, characterized in that: The fixed grid plates (1121) and the movable grid plates (1122) are arranged in an array and integrated in the arc extinguishing grid cover (102); the fixed grid plates (1121) are arranged in layers in the bottom, middle and top areas of the arc extinguishing grid cover; the movable grid plates (1122) are alternately arranged between two adjacent fixed grid plates (1121), and a dynamic arc extinguishing structure is formed through gap matching.

9. The primary and secondary integrated pole mounted circuit breaker easy to install according to claim 8, characterized in that: The movable grid plates (1122) are divided into two groups. The movable grid plates (1122) of one group are fixedly connected to each other via a connecting rod, and the movable grid plates (1122) of the other group are connected via a movable connecting rod (119) and a fixed base (120). One end of the movable connecting rod (119) is fixedly connected to a movable grid plate (1122), and the other end of the movable connecting rod (119) is slidably arranged inside the fixed base (120). The fixed base (120) is mounted on the other movable grid plate (1122). A second spring (121) is also arranged between the movable connecting rod (119) and the fixed base (120).

10. The primary and secondary integrated pole mounted circuit breaker easy to install according to claim 1, characterized in that: An electrical contact piece (111) is arranged inside the arc extinguishing grid cover (102), and the electrical contact piece (111) and the arc extinguishing grid cover (102) are matched to each other for electrical contact. Connecting grooves (118) are also provided at positions corresponding to a plurality of nozzles (117) on the inner wall of the arc extinguishing grid cover (102), and mounting pieces (2) for quick assembly and expansion are installed on both sides of the supporting base (1).

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