Embedded circuit breaker

Abstract

The embedded circuit breaker comprises an embedded shell with a mounting cavity, the embedded shell is provided with a telescopic opening which is communicated with the mounting cavity and the outside and is arranged upwards, a to-be-mounted frame with a mounting area is arranged in the mounting cavity, and a sliding assembly for allowing the to-be-mounted frame to enter and exit from the telescopic opening is arranged between the to-be-mounted frame and the mounting cavity. The to-be-mounted frame is provided with a maintenance position located on the outer side of the telescopic opening and a working position located in the mounting cavity, when the to-be-mounted frame is located at the maintenance position, a locking assembly is arranged between the pre-embedded shell and the to-be-mounted frame, the to-be-mounted frame is provided with an opening and closing assembly matched with the pre-embedded shell to achieve opening and closing, and when the to-be-mounted frame is located at the working position, the to-be-mounted frame is provided with an opening and closing assembly matched with the pre-embedded shell to achieve opening and closing. And a sealing assembly is arranged between the to-be-mounted frame and the embedded shell. The circuit breaker has the following advantages and effects: the operation and maintenance work can be more convenient, so that the later maintenance cost and maintenance difficulty of the circuit breaker are reduced.

Description

Technical Field

[0001] The invention relates to an electrical device, in particular to an embedded circuit breaker. Background Art

[0002] A circuit breaker is a switch device that can close, carry and interrupt the current under normal circuit conditions, and can close, carry and interrupt the current under abnormal circuit conditions within a specified time. It plays a role in protection and control in the power system. When overload, short circuit and other faults occur in the circuit, the circuit breaker can quickly cut off the circuit to prevent the fault from expanding and ensure the safe and stable operation of the power system.

[0003] As an electrical equipment widely used in various fields, the installation working environment of the circuit breaker is complex and changeable. Among them, underground installation is a typical installation method, that is, the circuit breaker is placed underground for installation. However, the use of the circuit breaker not only involves daily operation and management, but also includes regular maintenance work. The underground installation method greatly reduces the installation height of the circuit breaker, but it also brings considerable challenges to operation and maintenance. When workers perform these tasks, they often need to adopt a squatting posture. If such an operating posture is maintained for a long time, it is very easy to cause rapid physical fatigue. Physical fatigue not only affects work efficiency, but may also become a potential cause of operation and maintenance accidents. In addition, the buried installation method makes the installation space available for the circuit breaker very small, which undoubtedly further aggravates the difficulty and inconvenience of operation and maintenance. Therefore, based on the above problems, the present invention was conceived. Summary of the invention

[0004] The object of the present invention is to provide an embedded circuit breaker, which can make operation and maintenance work more convenient, thereby reducing the later maintenance cost and maintenance difficulty of the circuit breaker.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: an embedded circuit breaker, comprising an embedded shell with an installation cavity, the embedded shell is provided with a telescopic opening connecting the installation cavity with the outside and arranged upward, a rack to be installed with an installation area is provided in the installation cavity, a sliding component for the rack to be installed to enter and exit the telescopic opening is provided between the rack to be installed and the installation cavity, the rack to be installed has a maintenance position located outside the telescopic opening and a working position located inside the installation cavity, when the rack to be installed is in the maintenance position, a locking component is provided between the embedded shell and the rack to be installed, an opening and closing component is provided on the rack to be installed for cooperating with the embedded shell to realize opening and closing, and when the rack to be installed is in the working position, a sealing component is provided between the rack to be installed and the embedded shell.

[0006] By adopting the above technical solution, the components in the circuit breaker housing are installed in the installation area of ​​the rack to be installed, and the sealing assembly is used to ensure the sealing inside the housing, providing a suitable working environment for the circuit breaker. When the circuit breaker needs to be operated and maintained, the opening and closing assembly is opened, and the rack to be installed can be switched from the working position to the maintenance position above the ground through the telescopic opening through the sliding assembly. The rack to be installed is then fixed in the maintenance position by the locking assembly. By raising the height of the circuit breaker during operation and maintenance, it is convenient for workers to operate, thereby reducing the later maintenance cost and difficulty of the circuit breaker. When the operation and maintenance of the circuit breaker are completed, it is switched back to the working position and the opening and closing assembly is closed.

[0007] It is further configured as follows: a linkage component is provided between the opening and closing component and the sealing component, and when the opening and closing component is switched from an open state to a closed state, the sealing component can be controlled to switch to a tight sealing state through the linkage component; when the opening and closing component is switched from a closed state to an open state, the sealing component can be controlled to switch to a separated non-sealed state through the linkage component.

[0008] By adopting the above technical solution, the opening and closing components can be linked to control the sealing components to switch between the sealing state and the non-sealing state during the opening and closing process through the linkage components. The resistance caused by the sealing components to the control operation of the rack to be installed is reduced, making the control operation more convenient and labor-saving. In addition, this setting method can also reduce the wear on the sealing components and extend the service life of the sealing components.

[0009] It is further configured as follows: the sliding assembly includes a plurality of sliding posts fixedly arranged on the wall of the installation cavity and extending toward one side of the telescopic opening, and sliding holes formed on the rack to be installed and corresponding to the plurality of sliding posts one by one and for the sliding posts to be inserted, the axis of the sliding post is parallel to the direction of the telescopic opening, and an assisting spring is connected between the rack to be installed and the embedded shell to drive the rack to be installed to move toward the outside of the telescopic opening.

[0010] By adopting the above technical solution, this setting structure ensures that the rack to be installed slides stably while the setting of the sliding assembly does not increase the additional volume of the circuit breaker; and provides a lifting assist for the rack to be installed through the setting of the assist spring, so that workers can more conveniently lift the rack to be installed upwards.

[0011] It is further configured as follows: the sealing component is arranged between the adjacent two side walls of the mounting frame and the embedded shell, and the movement direction of the sealing component from the tight sealing state to the non-sealing state is perpendicular to the movement direction of the mounting frame.

[0012] By adopting the above technical solution, this setting structure enables the sealing component to form a more effective sealing force on the matching position between the mounting frame and the embedded shell, and cooperates with the linkage component to better reduce the wear of the sealing component during operation.

[0013] It is further configured as follows: the opening and closing component includes a control panel rotatably arranged in the rack to be installed, an opening and closing rod slidably arranged in the rack to be installed and reciprocating between the embedded shell and the outer peripheral wall of the control panel, an opening and closing groove formed in the embedded shell for the opening and closing rod to be inserted, and a linkage structure that links the opening and closing rod and the control panel, and a plurality of the opening and closing rods, the opening and closing grooves and the linkage structure are distributed around the outer periphery of the control panel.

[0014] By adopting the above technical solution, the control panel realizes synchronous control of multiple opening and closing rods through the linkage structure. When the opening and closing rod is inserted into the opening and closing groove, it constitutes a lock between the embedded shell and the rack to be installed; when the opening and closing rod is separated from the opening and closing groove, the lock between the embedded shell and the rack to be installed is released, thereby achieving the purpose of opening and closing between the embedded shell and the rack to be installed.

[0015] It is further configured as follows: the linkage structure includes a return spring that drives the opening and closing rod to move away from the opening and closing groove, and a tightening protrusion formed on the outer peripheral wall of the control disk, and the tightening protrusion is gradually protruded outward along the rotation direction of the control disk.

[0016] By adopting the above technical solution, the return spring drives the opening and closing rod to move away from the opening and closing groove, and then the gradually protruding abutting protrusion is used to resist the opening and closing rod from moving toward the opening and closing groove, so as to realize the reciprocating control of the opening and closing rod. This setting method has a simple structure and low processing cost.

[0017] It is further configured as follows: the sealing assembly includes a sealing ring arranged on one side of the opening and closing groove corresponding to the mounting frame, a sealing groove arranged in the embedded shell and corresponding to the position of the sealing ring, and a closed driving cavity formed between the sealing ring and the mounting frame, and the sealing ring and the sealing groove are both distributed around the outer periphery of the telescopic opening.

[0018] By adopting the above technical solution, the sealing ring and the sealing groove are provided to form a seal between the embedded housing and the rack to be installed, and the provided sealing groove increases the sealing contact surface, which can achieve a better sealing effect.

[0019] It is further configured as follows: the linkage components are distributed around the outer circumference of the control panel and are arranged one-to-one with the multiple linkage components and the multiple opening and closing rods. The linkage components include a linkage channel arranged in the rack to be installed and connected to the closed driving chamber, and a linkage piston rod sealed and slidably arranged in the linkage channel and moving with the opening and closing rod.

[0020] By adopting the above technical solution, the opening and closing rod simultaneously drives the linkage piston rod to move toward the closed drive chamber along the linkage channel and compresses the linkage channel to increase the pressure in the closed drive chamber connected thereto during the movement toward the opening and closing groove. This drives the sealing ring to undergo elastic deformation to expand outward and enter the extrusion sealing groove, thereby achieving a tighter sealing effect. When the opening and closing rod moves away from the opening and closing groove, it drives the linkage piston rod to move away from the closed drive chamber to reduce the pressure in the closed drive chamber connected thereto. This drives the sealing ring to shrink and then detach from the sealing groove, thereby forming a linkage between the opening and closing component and the sealing component.

[0021] It is further configured that: the locking assembly includes a lock tongue slidably arranged on the rack to be mounted, a positioning spring for positioning the lock tongue, and a lock hole formed in the embedded housing and for the lock tongue to be inserted.

[0022] By adopting the above technical solution, the lock tongue is inserted into the lock hole to form a locking function of the rack to be installed in the maintenance position.

[0023] In summary, the present invention has the following beneficial effects: the present invention can make operation and maintenance work more convenient, thereby reducing the later maintenance cost and maintenance difficulty of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an embodiment; Figure 2 It is a structural schematic diagram of the embodiment in the open state; Figure 3 is a cross-sectional view of an embodiment; Figure 4 for Figure 3 Enlarged view of part A in the middle; Figure 5 for Figure 3 Enlarged view of middle part B; Figure 6 is a cross-sectional view of another perspective of the embodiment; Figure 7 It is a partial structural schematic diagram of an embodiment; Figure 8 It is a partial cross-sectional view of an embodiment.

[0025] In the figure: 1. Installation cavity; 2. Embedded shell; 3. Telescopic opening; 4. Installation area; 5. Rack to be installed; 6. Locking assembly; 61. Lock tongue; 62. Positioning spring; 63. Lock hole; 7. Opening and closing assembly; 71. Control panel; 72. Opening and closing rod; 73. Opening and closing groove; 74. Return spring; 75. Tightening protrusion; 8. Sealing assembly; 81. Sealing ring; 82. Sealing groove; 83. Closed drive cavity; 9. Linkage assembly; 91. Linkage channel; 92. Linkage piston rod; 101. Sliding column; 102. Sliding hole; 11. Power assist spring; 12. Wire hole. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0027] refer to Figures 1 to 8 An embedded circuit breaker includes an embedded shell 2 with an installation cavity 1, a telescopic opening 3 connecting the installation cavity 1 with the outside and facing upward is provided on the top of the embedded shell 2, and a mounting frame 5 with an installation area 4 is provided in the installation cavity 1. A sliding assembly is provided between the mounting frame 5 and the installation cavity 1 for the mounting frame 5 to enter and exit the telescopic opening 3, and the mounting frame 5 has a maintenance position located outside the telescopic opening 3 and a working position located inside the installation cavity 1. When the mounting frame 5 is in the maintenance position, a locking assembly 6 is provided between the embedded shell 2 and the mounting frame 5; an opening and closing assembly 7 is provided on the mounting frame 5 to cooperate with the embedded shell 2 to realize opening and closing, and when the mounting frame 5 is in the working position, a sealing assembly 8 is provided between the mounting frame 5 and the embedded shell 2.

[0028] A linkage assembly 9 is provided between the opening and closing assembly 7 and the sealing assembly 8. When the opening and closing assembly 7 is switched from the open state to the closed state, the sealing assembly 8 can be controlled to switch to the tight sealing state through the linkage assembly 9; when the opening and closing assembly 7 is switched from the closed state to the open state, the sealing assembly 8 can be controlled to switch to the separated non-sealing state through the linkage assembly 9. The sealing assembly 8 is arranged between the adjacent two side walls of the to-be-installed frame 5 and the embedded shell 2, and the movement direction of the sealing assembly 8 from the tight sealing state to the non-sealing state is perpendicular to the movement direction of the to-be-installed frame 5.

[0029] The sliding assembly includes a plurality of slide posts 101 fixedly arranged at the bottom of the installation cavity 1 and extending toward one side of the telescopic opening 3, and a slide hole 102 formed on the mounting frame 5 and corresponding to the plurality of slide posts 101 and for the slide posts 101 to be inserted. The axis of the slide posts 101 is parallel to the direction of the telescopic opening 3, and a booster spring 11 is connected between the mounting frame 5 and the embedded housing 2 to drive the mounting frame 5 to move toward the outside of the telescopic opening 3, and the two ends of the booster spring 11 are respectively fixedly connected to the mounting frame 5 and the embedded housing 2. The components in the circuit breaker housing are fixed to the mounting plate of the mounting frame 5 by fasteners.

[0030] The opening and closing assembly 7 includes a control panel 71 rotatably arranged in the rack 5 to be installed, an opening and closing rod 72 slidably arranged in the rack 5 to be installed and reciprocating between the embedded shell 2 and the outer peripheral wall of the control panel 71, an opening and closing groove 73 formed in the embedded shell 2 and for the opening and closing rod 72 to be inserted, and a linkage structure constituting the linkage between the opening and closing rod 72 and the control panel 71. A plurality of the opening and closing rods 72, the opening and closing grooves 73 and the linkage structure are arranged around the outer periphery of the control panel 71. A hand wheel passing through the rack 5 to be installed is fixedly connected to the control panel 71 and the hand wheel rotates with the rack 5 to be installed. The linkage structure includes a return spring 74 installed in the rack 5 to be installed for driving the opening and closing rod 72 to move away from the opening and closing grooves 73 and a tight protrusion 75 integrally formed on the outer peripheral wall of the control panel 71, and the tight protrusion 75 is gradually protruded outward along the rotation direction of the control panel 71.

[0031] The sealing assembly 8 includes a sealing ring 81 bonded and fixedly arranged on one side of the mounting frame 5 corresponding to the opening and closing groove 73, a sealing groove 82 opened in the embedded housing 2 and corresponding to the position of the sealing ring 81, and a closed driving cavity 83 formed between the sealing ring 81 and the mounting frame 5. The sealing ring 81 and the sealing groove 82 are both arranged around the outer circumference of the telescopic opening 3 to form a ring.

[0032] The linkage assembly 9 is provided with a plurality of linkage assemblies 9 distributed around the outer circumference of the control panel 71, and the plurality of linkage assemblies 9 and the plurality of opening and closing rods 72 are provided one by one. The linkage assembly 9 includes a linkage channel 91 provided in the mounting frame 5 and connected to the sealed driving chamber 83, and a linkage piston rod 92 sealingly and slidably provided in the linkage channel 91 and fixedly connected to the opening and closing rod 72. The locking assembly 6 includes a lock tongue 61 slidably provided in the mounting frame 5, a positioning spring 62 for positioning the lock tongue 61, and a lock hole 63 provided in the embedded housing 2 and for inserting the lock tongue 61. The embedded housing 2 is provided with a plurality of wire holes 12. When the wire passes through the wire hole 12, the wire hole 12 and the wire are sealed by bonding with a sealant.

[0033] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An embedded circuit breaker, comprising an embedded housing (2) having a mounting cavity (1), characterized in that: The embedded shell (2) is provided with a telescopic opening (3) which is connected to the installation cavity (1) and the outside and is arranged upwards; a mounting frame (5) having an installation area (4) is provided in the installation cavity (1); a sliding component for allowing the mounting frame (5) to enter and exit the telescopic opening (3) is provided between the mounting frame (5) and the installation cavity (1); the mounting frame (5) has a maintenance position located outside the telescopic opening (3) and a working position located inside the installation cavity (1); when the mounting frame (5) is in the maintenance position, a locking component (6) is provided between the embedded shell (2) and the mounting frame (5); an opening and closing component (7) which cooperates with the embedded shell (2) to realize opening and closing is provided on the mounting frame (5); when the mounting frame (5) is in the working position, a sealing component (8) is provided between the mounting frame (5) and the embedded shell (2).

2. The embedded circuit breaker according to claim 1, characterized in that: A linkage assembly (9) is provided between the opening and closing assembly (7) and the sealing assembly (8); when the opening and closing assembly (7) is switched from an open state to a closed state, the sealing assembly (8) can be controlled by the linkage assembly (9) to switch to a tightly sealed state; and when the opening and closing assembly (7) is switched from a closed state to an open state, the sealing assembly (8) can be controlled by the linkage assembly (9) to switch to a separated non-sealed state.

3. The embedded circuit breaker according to claim 1, characterized in that: The sliding assembly comprises a plurality of sliding posts (101) fixedly arranged on the wall of the installation cavity (1) and extending toward one side of the telescopic opening (3), and sliding holes (102) formed on the mounting frame (5) and corresponding to the plurality of sliding posts (101) one by one and for the sliding posts (101) to be inserted into. The axis of the sliding posts (101) is parallel to the direction of the telescopic opening (3). An assist spring (11) is connected between the mounting frame (5) and the embedded housing (2) to drive the mounting frame (5) to move toward the outside of the telescopic opening (3).

4. The embedded circuit breaker according to claim 2, characterized in that: The sealing component (8) is arranged between adjacent side walls of the mounting frame (5) and the embedded shell (2); the movement direction of the sealing component (8) switching from a tight sealing state to a non-sealing state is perpendicular to the movement direction of the mounting frame (5).

5. The embedded circuit breaker according to claim 4, characterized in that: The opening and closing assembly (7) comprises a control panel (71) rotatably arranged in a mounting frame (5), an opening and closing rod (72) slidably arranged in the mounting frame (5) and reciprocating between the embedded shell (2) and the outer peripheral wall of the control panel (71), an opening and closing groove (73) formed in the embedded shell (2) and for the opening and closing rod (72) to be inserted into, and a linkage structure constituting a linkage between the opening and closing rod (72) and the control panel (71), wherein a plurality of the opening and closing rods (72), the opening and closing grooves (73) and the linkage structure are distributed around the outer periphery of the control panel (71).

6. The embedded circuit breaker according to claim 5, characterized in that: The linkage structure comprises a return spring (74) for driving the opening and closing rod (72) to move away from the opening and closing groove (73) and a pressing protrusion (75) formed on the outer peripheral wall of the control disk (71), wherein the pressing protrusion (75) is arranged to gradually protrude outward along the rotation direction of the control disk (71).

7. The embedded circuit breaker according to claim 5, characterized in that: The sealing assembly (8) comprises a sealing ring (81) arranged on one side of the mounting frame (5) corresponding to the opening and closing groove (73), a sealing groove (82) arranged in the embedded shell (2) and corresponding to the position of the sealing ring (81), and a closed driving cavity (83) formed between the sealing ring (81) and the mounting frame (5), wherein the sealing ring (81) and the sealing groove (82) are both arranged in a circumferential distribution around the outer circumference of the telescopic opening (3).

8. The embedded circuit breaker according to claim 7, characterized in that: The linkage assembly (9) is provided with a plurality of linkage assemblies (9) distributed around the outer circumference of the control panel (71) and is arranged one-to-one with the plurality of linkage assemblies (9) and the plurality of opening and closing rods (72). The linkage assembly (9) comprises a linkage channel (91) arranged in the mounting frame (5) and connected to the sealed driving chamber (83) and a linkage piston rod (92) sealingly slidably arranged in the linkage channel (91) and moving with the opening and closing rod (72).

9. The embedded circuit breaker according to claim 1, characterized in that: The locking assembly (6) comprises a locking tongue (61) slidably arranged on the mounting frame (5), a positioning spring (62) for positioning the locking tongue (61), and a locking hole (63) formed in the embedded housing (2) and for the locking tongue (61) to be inserted.

Images