CN117912871A - Dual-power transfer switch equipment and power distribution cabinet - Google Patents
Dual-power transfer switch equipment and power distribution cabinet Download PDFInfo
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- CN117912871A CN117912871A CN202410304286.6A CN202410304286A CN117912871A CN 117912871 A CN117912871 A CN 117912871A CN 202410304286 A CN202410304286 A CN 202410304286A CN 117912871 A CN117912871 A CN 117912871A
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- circuit breaker
- stopper
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- chute
- handle
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- 238000012546 transfer Methods 0.000 title claims abstract description 20
- 230000009977 dual effect Effects 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 238000005192 partition Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 description 15
- 238000004891 communication Methods 0.000 description 8
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
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- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
Abstract
The embodiment of the disclosure provides dual-power transfer switching equipment and a power distribution cabinet. The dual power conversion switch device includes: first circuit breaker and second circuit breaker that set up side by side, every circuit breaker includes: a housing; a handle rotatably connected to the housing and adapted to switch between a open position and a closed position; the lock catch assembly is arranged in the shell, and one end of the lock catch assembly is coupled to the handle so as to move along with the handle; the first limiting piece is coupled to the lock catch assembly of the first circuit breaker so as to move along with the lock catch assembly, and the first limiting piece is provided with a locking groove; and a second limiting piece coupled to the latch assembly of the second circuit breaker; the second limiting piece is staggered with the locking groove under the condition that the handle of the first circuit breaker is at the closing position; and when the handle of the second circuit breaker is in the closing position, the second limiting piece is inserted into the locking groove so as to prevent the first limiting piece from moving. The dual-power transfer switching device can avoid the simultaneous conduction of two paths of power supplies, and has higher safety.
Description
Technical Field
Embodiments of the present disclosure relate generally to the field of electrical equipment, and more particularly, to a dual power conversion switch device and a power distribution cabinet.
Background
In order to ensure the power supply safety or improve the continuous power supply capability, two paths of power supplies are used for supplying power in many occasions, and one path of power supply is not allowed to supply power when the other path of power supply supplies power. If two paths of power supplies are simultaneously supplied, short-circuit accidents can occur, and the potential safety hazard is large. In a conventional dual power transfer switching device, controlling the switching on and off of two power supplies operates on two circuit breakers, each circuit breaker controlling one power supply. Because the two circuit breakers are often close together, operators can be neglected to conduct two paths of power supplies simultaneously when the operators manually switch off the switches, and the danger is high.
Disclosure of Invention
It is an object of embodiments of the present disclosure to provide a dual power transfer switching device and a power distribution cabinet including the dual power transfer switching device to at least partially address the above problems, as well as other potential problems.
In a first aspect of the present disclosure, a dual power conversion switch device is provided. The dual power conversion switch device includes: first circuit breaker and second circuit breaker that set up side by side, every circuit breaker includes: a housing; a handle rotatably connected to the housing and adapted to switch between a brake off position and a brake on position; and a latch assembly disposed inside the housing, one end of the latch assembly being coupled to the handle to move with the handle; a first stopper coupled to the latch assembly of the first circuit breaker to move with the latch assembly, the first stopper configured with a locking groove; and a second limit coupled to the latch assembly of the second circuit breaker to move with the latch assembly; wherein the second limiting piece is staggered with the locking groove when the handle of the first circuit breaker is at a closing position; and when the handle of the second circuit breaker is in a closing position, the second limiting piece is inserted into the locking groove so as to prevent the first limiting piece from moving.
In some embodiments, a first chute and a second chute in communication with each other are configured between adjacent sides of the housing of the first circuit breaker and the housing of the second circuit breaker; the first limiting piece is positioned in the first chute and can move along the sliding direction defined by the first chute; the second limiting piece is positioned in the second sliding groove and can move along the sliding direction limited by the second sliding groove.
In some embodiments, at least one of the housing of the first circuit breaker and the housing of the second circuit breaker is provided with the first chute and the second chute.
In some embodiments, further comprising: and a partition member provided between the housing of the first circuit breaker and the housing of the second circuit breaker, and configured with the first chute and the second chute penetrating through the partition member.
In some embodiments, the housing of the first circuit breaker is provided with a first through hole at a position corresponding to the first chute, and the housing of the second circuit breaker is provided with a second through hole at a position corresponding to the second chute; the first limiter is coupled to the latch assembly of the first circuit breaker along the first through hole, and the second limiter is coupled to the latch assembly of the second circuit breaker along the second through hole.
In some embodiments, the sliding direction of the first chute and the sliding direction of the second chute are perpendicular to each other.
In some embodiments, the side of the first limiting piece facing the second limiting piece is provided with the locking groove, and the locking groove avoids the end position of the first limiting piece.
In some embodiments, a limiting portion is disposed at an end of the second limiting member facing the first limiting member, and a cross-sectional area of the limiting portion is smaller than a cross-sectional area of an end of the second limiting member along a direction perpendicular to a sliding direction of the second sliding groove.
In some embodiments, the latch assembly includes: a bracket rotatably connected to the housing about a first axis; a first locking member rotatably connected to the bracket about a second axis and configured with a support portion and a body portion; and a second locking member rotatably coupled to the bracket around a third axis to be snap-coupled to the supporting portion of the first locking member; wherein the first limiter is coupled to the body portion of the first circuit breaker and the second limiter is coupled to the second shaft of the second circuit breaker.
In some embodiments, the body portion of the first circuit breaker is configured with a boss, the first stopper is configured with a first connection hole, the boss is inserted into the first connection hole and the first through hole, and a size of the boss is smaller than a size of the first through hole and a size of the first connection hole; the second limiting piece is provided with a second connecting hole, the second shaft of the second circuit breaker is inserted into the second connecting hole and the second through hole, and the size of the second shaft is smaller than the size of the second through hole and the size of the second connecting hole.
In a second aspect of the present disclosure, a power distribution cabinet is provided. The power distribution cabinet comprises a cabinet body and double-power-supply transfer switch equipment provided according to the first aspect of the disclosure.
In the embodiment of the disclosure, when the handle of the first circuit breaker and the handle of the second circuit breaker are switched between the opening position and the closing position, the respective locking components are driven to synchronously move, and the movement paths of different parts of the locking components in the closing process of the handles are different. The first limiting piece is coupled to the locking component of the first circuit breaker, a locking groove is formed in the first limiting piece, and the second limiting piece is coupled to the locking component of the second circuit breaker. Under the condition that the second limiting piece is staggered with the locking groove of the first limiting piece, the second limiting piece is prevented from moving by other parts of the first limiting piece; in the case where the second stopper is inserted into the locking groove, the second stopper can be moved while the first stopper is prevented from being moved. With this arrangement, in the case where the handle of the first circuit breaker is in the closing position, the second stopper is staggered from the locking groove, and at this time, the handle of the second circuit breaker linked with the second stopper cannot be moved, so that the handle of the second circuit breaker cannot be switched to the closing position. Under the condition that the handle of the second circuit breaker is at the closing position, the second limiting piece is inserted into the locking groove, and at the moment, the first limiting piece is prevented from moving, so that the handle of the first circuit breaker cannot be switched to the closing position. Therefore, the dual-power transfer switching equipment provided by the embodiment of the disclosure can avoid that two paths of power supplies are conducted simultaneously, and has higher safety.
It should be understood that what is described in this section of content is not intended to limit key features or essential features of the embodiments of the present disclosure nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
The above and other features, advantages and aspects of embodiments of the present disclosure will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, wherein like or similar reference numerals denote like or similar elements, in which:
Fig. 1 is a schematic perspective view of a dual power conversion switch device of an embodiment of the present disclosure, including a first circuit breaker and a second circuit breaker;
Fig. 2 is a schematic perspective view of a handle of a first circuit breaker of an embodiment of the present disclosure in a tripped position;
FIG. 3 is a schematic cross-sectional view of a handle of a first circuit breaker of an embodiment of the present disclosure in a tripped position;
Fig. 4 is a schematic perspective view of a handle of a first circuit breaker of an embodiment of the present disclosure in a closed position;
fig. 5 is a schematic cross-sectional view of a handle of a first circuit breaker of an embodiment of the present disclosure in a closed position;
fig. 6 is a schematic perspective view of a handle of a second circuit breaker in an open position according to an embodiment of the present disclosure;
FIG. 7 is a schematic cross-sectional view of a handle of a second circuit breaker in an open position according to an embodiment of the disclosure;
fig. 8 is a schematic view of an internal structure of a circuit breaker including a contact spring according to an embodiment of the present disclosure;
Fig. 9 is a schematic perspective view of a dual power conversion switch device of an embodiment of the present disclosure, wherein a handle of a first circuit breaker is in a closed position and a handle of a second circuit breaker is in an open position;
fig. 10 is a front view of the dual power conversion switch device shown in fig. 9;
Fig. 11 is a schematic perspective view of a dual power conversion switch device of an embodiment of the present disclosure, wherein a handle of a first circuit breaker and a handle of a second circuit breaker are both in a breaking position;
fig. 12 is a front view of the dual power conversion switch device shown in fig. 11;
fig. 13 is a schematic perspective view of a dual power conversion switch device of an embodiment of the present disclosure, wherein a handle of a first circuit breaker is in a breaking position and a handle of a second circuit breaker is in a closing position;
fig. 14 is a front view of the dual power conversion switch device shown in fig. 13;
FIG. 15 is a schematic block diagram of a first stop member according to an embodiment of the present disclosure;
fig. 16 is a schematic structural view of a second stopper according to an embodiment of the present disclosure.
Reference numerals:
100a, a first circuit breaker; 100b, a second circuit breaker; 101. a screw;
10. a housing; 11. a first chute; 12. a second chute; 13. a first through hole; 14. a second through hole; 15. a stationary contact;
20. a handle;
30. A latch assembly; 31. a bracket; 32. a first shaft; 33. a first locking member; 331. a support part; 332. a body portion; 333. a boss; 34. a second shaft; 35. a second locking member; 36. a third shaft; 37. a contact support; 38. a connecting piece; 391. a return spring; 392. a contact spring; 393. a moving contact;
41. a first limiting member; 411. a locking groove; 412. a first connection hole; 42. a second limiting piece; 421. a limit part; 422. and a second connection hole.
Detailed Description
Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are illustrated in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The term "comprising" and variations thereof as used herein means open ended, i.e., "including but not limited to. The term "or" means "and/or" unless specifically stated otherwise. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment. The term "another embodiment" means "at least one additional embodiment". The terms "first," "second," and the like, may refer to different or the same object.
As described above, in the conventional dual power conversion switch device, the on and off of the two power supplies are controlled by two circuit breakers, each of which controls one power supply, and the two circuit breakers are often close together, and when an operator manually pulls the switch, the operator may inadvertently cause the two power supplies to be simultaneously turned on, and the risk is high.
In view of the above, the embodiments of the present disclosure provide a dual-power transfer switch device and a power distribution cabinet. The double power conversion switch device includes a first circuit breaker 100a, a second circuit breaker 100b, a first stopper 41 and a second stopper 42, as shown in fig. 1 to 16.
In some embodiments, as shown in fig. 1, the first circuit breaker 100a and the second circuit breaker 100b are disposed in parallel, and may be connected by a screw 101 or a rivet. By means of the arrangement, space occupation can be reduced, the dual-power transfer switch equipment can be installed in a distribution box of standard specifications, a cabinet body of a special size does not need to be purchased, and applicability is higher.
As shown in fig. 1 to 7, each of the first and second circuit breakers 100a and 100b includes a housing 10, a handle 20, and a latch assembly 30, wherein the handle 20 and the latch assembly 30 constitute an operating mechanism of the circuit breaker.
The housing 10 is typically made of an insulating material, and the housing 10 not only provides physical protection and support for the electrical and mechanical components inside the circuit breaker, but also serves as a mount, insulation, heat dissipation, etc. The housing 10 ensures the safety of the circuit breaker in installation and operation and is provided with terminals for wiring and interfaces for mounting accessories.
The handle 20 is part of a circuit breaker operating mechanism rotatably coupled to the housing 10, allowing a user to manually control the on-off state of the circuit breaker. The handle 20 is connected to a contact system inside the circuit breaker by a mechanical transmission such as a latch assembly 30. When the switch is used, the handle of the circuit breaker can be switched from the switch-off position to the switch-on position, and the handle of the circuit breaker can also be switched from the switch-on position to the switch-off position. The opening position is that the fixed contact 15 and the moving contact 393 of the circuit breaker are disconnected and the circuit is not conducted any more, so that the current flow is cut off, and the isolation of the circuit is realized. The closing position refers to the closing of the fixed contact 15 and the moving contact 393 of the circuit breaker, allowing the current to pass, so as to put the circuit in the on state.
As shown in fig. 3, 5, 7 and 8, the latch assembly 30 is located inside the housing 10 and is a safety control mechanism having one end coupled to the handle 20 and synchronously operated with the movement of the handle 20. The latch assembly 30 functions to ensure that the circuit breaker is not closed by an unexpected or improper operation under certain conditions (e.g., overload, short circuit, etc.), or to lock the handle 20 when it is desired to maintain the open state, preventing the circuit from being re-closed by an erroneous operation. Meanwhile, the locking assembly 30 also participates in the normal switching operation process of the circuit breaker, guides and positions the actions of the handle 20, and ensures accurate opening and closing of the fixed contact 15 and the movable contact 393. In the embodiment of the disclosure, the fixed contact 15 is disposed in the housing 10, and the movable contact 393 is coupled to an end of the latch assembly 30 remote from the handle 20, and the fixed contact 15 and the movable contact 393 are components of the contact system.
In the embodiment of the present disclosure, as shown in fig. 9 to 16, the dual power conversion switch apparatus further includes a first stopper 41 and a second stopper 42. The first stopper 41 is coupled to the latch assembly 30 of the first circuit breaker 100a to move with the latch assembly 30 of the first circuit breaker 100a, and the first stopper 41 is configured with a locking slot 411. The second stopper 42 is coupled to the latch assembly 30 of the second circuit breaker 100b to move with the latch assembly 30 of the second circuit breaker 100 b. When the handle 20 of the first circuit breaker 100a is at the closing position, the second stopper 42 is staggered from the locking slot 411; and the second stopper 42 is inserted into the locking slot 411 to prevent the movement of the first stopper 41 in the case that the handle 20 of the second circuit breaker 100b is at the closing position.
As shown in fig. 3,5 and 7, in the first and second circuit breakers 100a and 100b, the handles 20 are coupled with the respective corresponding latch assemblies 30. In the latch assembly 30, the motion trajectories of different portions are different. In the embodiment of the disclosure, the first limiting member 41 and the second limiting member 42 are respectively coupled at different positions of the two latch assemblies 30 to realize different spatial displacement, so that the first limiting member 41 and the second limiting member 42 can be interlocked and unlocked.
As shown in fig. 9 and 10, when the handle 20 of the first circuit breaker 100a is in the closing position (i.e., the circuit is completed), the second stopper 42 is offset from the locking slot 411 on the first stopper 41. The movement of the second stopper 42 is blocked by the first stopper 41 and cannot be moved. Since the second stopper 42 is interlocked with the handle 20 and the latch assembly 30 of the second circuit breaker 100b, the handle 20 of the second circuit breaker 100b cannot be switched to the closing position.
As shown in fig. 13 and 14, when the handle 20 of the second circuit breaker 100b is at the closing position, the second stopper 42 is inserted into the locking slot 411 of the first stopper 41, and at this time, the second stopper 42 can move along the locking slot 411 in the original sliding direction. The handle 20 of the second circuit breaker 100b can be switched between the closing position and the opening position, but at this time, the second stopper 42 is engaged with the locking slot 411, and the movement of the first stopper 41 is restricted. Since the first limiting member 41 is coupled with the handle 20 and the latch assembly 30 of the first circuit breaker 100a, the handle 20 of the first circuit breaker 100a cannot be switched to the closing position.
By means of the arrangement, the dual-power transfer switching device provided by the embodiment of the disclosure can avoid the simultaneous conduction of two paths of power supplies, and is high in safety.
In some embodiments, a first chute 11 and a second chute 12 communicating with each other are configured between adjacent sides of the housing 10 of the first circuit breaker 100a and the housing 10 of the second circuit breaker 100 b. The first stopper 41 is located in the first chute 11 and is movable in a sliding direction defined by the first chute 11. The second stopper 42 is located in the second chute 12 and is capable of sliding movement defined along the second chute 12.
As shown in fig. 2,4, 6, and 9 to 14, a first slide groove 11 and a second slide groove 12 are constructed between adjacent sides of the housing 10 of the first circuit breaker 100a and the housing 10 of the second circuit breaker 100b, the first slide groove 11 and the second slide groove 12 intersect on a plane, and the first slide groove 11 and the second slide groove 12 communicate with each other. When the first limiting member 41 is positioned in the first chute 11, it can move along the sliding direction defined by the first chute 11; the second stop member 42 is movable in a sliding direction defined by the two slide grooves when it is positioned in the second slide groove 12. In the communication position of the first chute 11 and the second chute 12, both the first stopper 41 and the second stopper 42 are accessible. When the locking slot 411 of the first stopper 41 corresponds to the above-described communication position, the second stopper 42 can be inserted into the locking slot 411. When the locking slot 411 of the first stopper 41 avoids the above-mentioned communication position, the second stopper 42 is blocked by other portions of the first stopper 41.
In some embodiments, the housing 10 of the first circuit breaker 100a is provided with a first through hole 13 at a position corresponding to the first chute 11, and the housing 10 of the second circuit breaker 100b is provided with a second through hole 14 at a position corresponding to the second chute 12; the first stopper 41 is coupled to the latch assembly 30 of the first circuit breaker 100a along the first through hole 13, and the second stopper 42 is coupled to the latch assembly 30 of the second circuit breaker 100b along the second through hole 14. As shown in fig. 4 and 6, the first through hole 13 is connected to the inside of the housing 10 of the first circuit breaker 100a and the first chute 11, and the latch assembly 30 of the first circuit breaker 100a can be connected to the first limiting member 41 through a mechanical structure, so as to drive the first limiting member 41 to move along the first chute 11. The second through hole 14 is connected to the inside of the housing 10 of the second circuit breaker 100b and the second chute 12, and the latch assembly 30 of the second circuit breaker 100b may be connected to the second limiting member 42 through a mechanical structure, so as to drive the second limiting member 42 to move along the second chute 12.
In some alternative embodiments, the first runner 11 is not in communication with the interior of the housing 10 of the first circuit breaker 100 a. A first magnetic member is disposed on the latch assembly 30 in the first circuit breaker 100a, a second magnetic member is disposed on the first stopper 41, and the first stopper 41 is made of an insulating material. The latch assembly 30 can drive the first limiting member 41 to move along the first chute 11 through the housing 10 of the first circuit breaker 100 a.
The above two implementations are equally applicable to the second chute 12 and the second circuit breaker 100b.
In some embodiments, at least one of the housing 10 of the first circuit breaker 100a and the housing 10 of the second circuit breaker 100b is provided with a first chute 11 and a second chute 12.
As shown in fig. 2,4, 6, and 9 to 14, the arrangement of the first chute 11 and the second chute 12 includes at least three cases:
First, the first chute 11 and the second chute 12 are formed by recessing the surface of the housing 10 of the first circuit breaker 100a (the chute may or may not be connected to the inside of the housing 10), while the surface of the housing 10 of the second circuit breaker 100b is a planar structure, and the housing 10 of the second circuit breaker 100b is used for limiting the release of the limiting member.
As shown in fig. 2 and 4, the housing 10 of the first circuit breaker 100a has a certain thickness, a surface of the side of the housing 10 facing the second circuit breaker 100b is recessed inward to form a first slide groove 11 and a second slide groove 12, and a depth of the first slide groove 11 and the second slide groove 12 with respect to the surface of the housing 10 is smaller than the thickness of the housing 10. The first and second stoppers 41 and 42 may have a thin plate structure, and the thicknesses of the stoppers may be equal to or less than the depths of the first and second sliding grooves 11 and 12, and thus may slide in the first and second sliding grooves 11 and 12 formed on the surface of the housing 10 of the first circuit breaker 100 a. The side of the housing 10 of the second circuit breaker 100b facing the first circuit breaker 100a has a planar structure, and when the housing 10 of the first circuit breaker 100a is in close contact with the housing 10 of the second circuit breaker 100b, the planar structure of the housing 10 of the second circuit breaker 100b can seal the first stopper 41 and the second stopper 42 in the first chute 11 and the second chute 12, so that the stopper can be prevented from coming out. Meanwhile, the groove wall of the first chute 11, the groove wall of the second chute 12 and the surface of the housing 10 of the second circuit breaker 100b together form a limiting and guiding structure when the first limiting member 41 and the second limiting member 42 move.
In some embodiments, the housing 10 of the first circuit breaker 100a has a certain thickness, the surface of the side of the housing 10 facing the second circuit breaker 100b is recessed inward to form the first sliding groove 11 and the second sliding groove 12, and the first sliding groove 11 and the second sliding groove 12 penetrate through the interior of the housing 10. In this design, in order to prevent the first and second stoppers 41 and 42 from falling into the interior of the housing 10 of the first circuit breaker 100a, spaced or continuous stopper bosses may be provided in the interior of the housing 10 of the first circuit breaker 100a, which are provided at the edges of the housing 10 corresponding to the walls of the first and second sliding grooves 11 and 12. Of course, a first concave or convex guide rail may be disposed on the groove walls of the first chute 11 and the second chute 12, and a second convex or concave guide rail may be disposed on the edges of the first stopper 41 and the second stopper 42, so that the stopper moves along the sliding direction defined by the chute through the cooperation of the first guide rail and the second guide rail, and does not fall into the housing 10 of the first circuit breaker 100a during the movement.
Second, the first chute 11 and the second chute 12 are formed by recessing the surface of the housing 10 of the second circuit breaker 100b (may or may not be connected to the inside of the housing 10), while the surface of the housing 10 of the first circuit breaker 100a is a planar structure, and the housing 10 of the first circuit breaker 100a is used for limiting the release of the limiting member.
As shown in fig. 6, the housing 10 of the second circuit breaker 100b has a thickness, a surface of the housing 10 facing a side of the first circuit breaker 100a is recessed inward to form a first slide groove 11 and a second slide groove 12, and a depth of the first slide groove 11 and the second slide groove 12 with respect to the surface of the housing 10 is smaller than the thickness of the housing 10. The first and second stoppers 41 and 42 may have a thin plate structure, and have a thickness equal to or less than the depth of the first and second sliding grooves 11 and 12, and may slide in the first and second sliding grooves 11 and 12 formed on the surface of the housing 10 of the second circuit breaker 100 b. When the housing 10 of the first circuit breaker 100a is in close contact with the housing 10 of the second circuit breaker 100b, the planar structure of the housing 10 of the first circuit breaker 100a can seal the first stopper 41 and the second stopper 42 in the first chute 11 and the second chute 12, and the stopper can be prevented from coming out. Meanwhile, the groove wall of the first chute 11, the groove wall of the second chute 12 and the surface of the housing 10 of the first circuit breaker 100a together form a limiting and guiding structure when the first limiting member 41 and the second limiting member 42 move.
Third, the surface of the housing 10 of the first circuit breaker 100a and the surface of the housing 10 of the second circuit breaker 100b are both configured with a first chute 11 and a second chute 12, and two limiting members are located in the chute formed after the two housings 10 are buckled.
As shown in fig. 4 and 6, the surface of the housing 10 of the first circuit breaker 100a and the surface of the housing 10 of the second circuit breaker 100b are each configured with a first slide groove 11 and a second slide groove 12, and the positions of the first slide groove 11 and the second slide groove 12 on both sides correspond. When the housing 10 of the first circuit breaker 100a is closely attached to the housing 10 of the second circuit breaker 100b, the first chute 11 and the second chute 12 on both sides are buckled together to form a whole. The limiting piece can be of a thin plate structure, and the thickness of the limiting piece is smaller than or equal to the total depth of the sliding grooves on the two sides, but larger than the depth of the sliding grooves on the single side. The groove wall of the first chute 11, the groove wall of the second chute 12, the groove bottom of the first chute 11 and the groove bottom of the second chute 12 together form a limiting and guiding structure when the first limiting piece 41 and the second limiting piece 42 move.
In some embodiments, the dual power conversion switch device may further include a separator. The partition is provided between the housing 10 of the first circuit breaker 100a and the housing 10 of the second circuit breaker 100b, and the partition is configured with a first chute 11 and a second chute 12 penetrating through the partition. In such an embodiment, there is no need to machine a chute in the housing 10 of the first circuit breaker 100a and in the housing 10 of the second circuit breaker 100b, but a partition member is provided between the first circuit breaker 100a and the second circuit breaker 100b, and the partition member may be a thin plate structure, the thickness of which is adapted to the stopper member. The first chute 11 and the second chute 12 are arranged on the partition piece, and the process is simpler.
In some embodiments, the sliding direction of the first chute 11 and the sliding direction of the second chute 12 are perpendicular to each other.
As shown in fig. 2,4, 6 and 9 to 14, the first chute 11 and the second chute 12 are rectangular grooves, and the sliding directions of the two are perpendicular to each other. Correspondingly, the first limiting member 41 and the second limiting member 42 have a rectangular structure as a whole. With this arrangement, the resistance of the stopper sliding is small (compared with an arc shape or other abnormal shape), and the misalignment of the first stopper 41 and the second stopper 42 is clear, which facilitates smooth insertion or sliding of the second stopper 42 out of the locking slot 411 of the first stopper 41.
In some embodiments, a side of the first limiting member 41 facing the second limiting member 42 is provided with a locking slot 411, and the locking slot 411 avoids an end position of the first limiting member 41.
As shown in fig. 9,10, 15 and 16, when the handle 20 of the first circuit breaker 100a is at the closing position, the end of the first stopper 41 moves to the communication position of the first chute 11 and the second chute 12, and the end of the first stopper 41 blocks the movement of the second stopper 42.
As shown in fig. 11, 12, 15 and 16, when the first and second circuit breakers 100a and 100b are both in the open position, the locking slot 411 of the first stopper 41 moves to the communication position of the first and second slide grooves 11 and 12, and the end of the second stopper 42 is disengaged from the locking slot 411 of the first stopper 41. At this time, both the first stopper 41 and the second stopper 42 may move, and it is possible to selectively switch the handle of the first circuit breaker 100a to the closing position or switch the handle of the second circuit breaker 100b to the closing position, but both cannot move at the same time.
As shown in fig. 13, 14, 15 and 16, when the handle 20 of the first circuit breaker 100a is at the opening position, the locking slot 411 of the first stopper 41 moves to the communication position of the first chute 11 and the second chute 12, the locking slot 411 of the first stopper 41 corresponds to the end of the second stopper 42, the locking slot 411 allows the second stopper 42 to be inserted into the locking slot 411, and the handle 20 of the second circuit breaker 100b can be closed.
In some embodiments, the end of the second limiting member 42 facing the first limiting member 41 is provided with a limiting portion 421, and the cross-sectional area of the limiting portion 421 is smaller than the cross-sectional area of the end of the second limiting member 42 along the direction perpendicular to the sliding direction of the second sliding chute 12.
In some embodiments, as shown in fig. 16, the size of the limiting portion 421 is smaller, and at this time, the smaller stroke of the first limiting member 41 can be used to block the movement of the second limiting member 42 or allow the movement of the second limiting member 42. The size of the limiting portion 421 may be determined based on the stroke difference of different portions of the latch assembly 30 when the handle 20 is switched from the opening position to the closing position, or an appropriate portion for connecting the first limiting member 41 to the latch assembly 30 may be selected when the size of the limiting portion 421 is determined.
In some embodiments, latch assembly 30 includes a bracket 31, a first shaft 32, a first retaining member 33, a second shaft 34, a second retaining member 35, a third shaft 36, a contact support 37, and a connector 38.
In some embodiments, as shown in fig. 3, 5 and 8, the contact support 37 and the bracket 31 are both rotatably connected to the housing 10 about the first axis 32, and the contact support 37 and the bracket 31 are independent of each other. A contact spring 392 is further provided on the outer side of the first shaft 32, and the contact spring 392 is connected to the contact support 37 and the bracket 31 at the same time, so that the bracket 31 and the contact support 37 can move synchronously around the first shaft 32 and can provide a buffering effect. The first locker 33 is rotatably connected to the bracket 31 about the second shaft 34, and the first locker 33 is further configured with a supporting portion 331 and a body portion 332. The supporting portion 331 may be a cantilever structure, and an included angle may be formed between the supporting portion 331 and the body portion 332. The second locker 35 is rotatably coupled to the bracket 31 around the third shaft 36 to be snap-coupled to the supporting portion 331 of the first locker 33. The first stopper 41 is coupled to the body portion 332 of the first circuit breaker 100a, and the second stopper 42 is coupled to the second shaft 34 of the second circuit breaker 100 b. A movable contact 393 is mounted to one end of the contact support 37, and a stationary contact 15 is mounted to the housing 10. A first end of the link 38 is rotatably connected to the handle 20 and a second end of the link 38 is rotatably connected to the first locking member 33.
As shown in fig. 3 and 5, in switching the handle 20 from the opening position to the closing position, the contact support 37, the bracket 31, the second locker 35, the second shaft 34, and the third shaft 36 are rotated clockwise around the first shaft 32 while the first locker 33 is rotated clockwise around the second shaft 34. The second locking member 35 rotates clockwise around the third shaft 36 by the supporting portion 331. When the handle 20 reaches the closing position, an extension line of the first end of the connecting member 38 corresponds to the rotation axis of the handle 20, and an extension line of the second end of the connecting member 38 corresponds to the third axis 36 of the second locking member 35. With this arrangement, the handle 20 and the second locking member 35 can be balanced in torque and locked in position and stay in the closed position. The handle 20 will switch from the closed position to the open position only if the torque balance is destroyed under the intervention of an external force (active brake release or pushing by the trip mechanism in the event of an accident).
As shown in fig. 3, 5 and 7, in the latch assembly 30, the movement trace of the second shaft 34 is different from that of the body portion 332 of the first latch member 33. In the embodiment of the present disclosure, the interlocking and unlocking of the first and second stoppers 41 and 42 may be achieved by driving the first stopper 41 along the first chute 11 with the body portion 332 of the first circuit breaker 100a and driving the second stopper 42 along the second chute 12 with the second shaft 34 of the second circuit breaker 100 b.
In some embodiments, the body portion 332 of the first circuit breaker 100a is configured with a boss 333, and the boss 333 may be a long cylindrical structure. The first stopper 41 is configured with a first connection hole 412, the boss 333 is inserted into the first connection hole 412 and the first through hole 13, and the size of the boss 333 is smaller than the size of the first through hole 13 and the size of the first connection hole 412. The second stopper 42 is configured with a second connection hole 422, the second shaft 34 of the second circuit breaker 100b is inserted into the second connection hole 422 and the second through hole 14, and the size of the second shaft 34 is smaller than the size of the second through hole 14 and the size of the second connection hole 422.
In some embodiments, as shown in fig. 9 to 16, the body portion 332 of the first circuit breaker 100a rotates about the second shaft 34, and thus the movement trace of the boss 333 is arc-shaped. The second shaft 34 rotates about the first shaft 32, and thus the movement trace of the second shaft 34 is also arc-shaped. In order to enable the boss 333 to drive the first stopper 41 to move along the first chute 11, the size (e.g., aperture) of the first through hole 13 and the size (e.g., aperture) of the first connection hole 412 are larger than the size (e.g., diameter) of the boss 333, i.e., the boss 333 is allowed to move in an arc shape, and the first stopper 41 moves in a straight line.
Similarly, to enable the second shaft 34 to drive the second stopper 42 along the second chute 12, the second shaft 34 has a size (e.g., diameter) smaller than the size (e.g., aperture) of the second through hole 14 and the size (e.g., aperture) of the second connecting hole 422, i.e., the second shaft 34 is allowed to move in an arc shape, while the second stopper 42 moves in a straight line.
In a second aspect of the present disclosure, a power distribution cabinet is provided. The power distribution cabinet comprises a cabinet body and double-power-supply transfer switch equipment provided according to the first aspect of the disclosure.
According to the power distribution cabinet provided by the embodiment of the present disclosure, the dual power conversion switch device of the power distribution cabinet includes a first circuit breaker 100a, a second circuit breaker 100b, a first limiting member 41 and a second limiting member 42. When the handle 20 of the first circuit breaker 100a and the handle 20 of the second circuit breaker 100b are switched between the opening position and the closing position, the respective latch assemblies 30 are driven to move synchronously, and the movement paths of different parts of the latch assemblies 30 are different in the closing process. The first stopper 41 is coupled to the latch assembly 30 of the first circuit breaker 100a, the second stopper 42 is coupled to the latch assembly 30 of the second circuit breaker 100b, and a locking slot 411 is configured on the first stopper 41. When the second stopper 42 is offset from the locking slot 411 of the first stopper 41, the second stopper 42 is prevented from moving by other portions of the first stopper 41; in the case where the second stopper 42 is inserted into the locking slot 411, the second stopper 42 may move while the first stopper 41 is prevented from moving. The first limiting member 41, the second limiting member 42, and the corresponding latch assembly 30 and the handle 20 are coupled. With this arrangement, in the case where the handle 20 of the first circuit breaker 100a is in the closing position, the second stopper 42 is staggered from the locking slot 411, and at this time, the handle 20 of the second circuit breaker 100b cannot be moved, so that the handle of the second circuit breaker 100b cannot be switched to the closing position; while, in the case that the handle 20 of the second circuit breaker 100b is at the closing position, the second stopper 42 is inserted into the locking slot 411, and at this time, the first stopper 41 is prevented from moving, so that the handle of the first circuit breaker 100a cannot be switched to the closing position. Therefore, the dual-power transfer switching equipment provided by the embodiment of the disclosure can avoid that two paths of power supplies are conducted simultaneously, and has higher safety.
The disclosed embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Accordingly, any omissions, modifications, equivalents, improvements, and the like, which are within the spirit and principles of the embodiments of the disclosure, are intended to be included within the scope of the disclosure.
Claims (11)
1. A dual power conversion switch device, comprising:
A first circuit breaker (100 a) and a second circuit breaker (100 b) arranged in parallel, each circuit breaker comprising:
a housing (10);
A handle (20) rotatably connected to the housing and adapted to switch between a switch-off position and a switch-on position; and
A latch assembly (30) disposed inside the housing, one end of the latch assembly (30) being coupled to the handle (20) to move with the handle (20);
A first stopper (41) coupled to the latch assembly (30) of the first circuit breaker (100 a) to move with the latch assembly (30), the first stopper (41) configured with a locking slot (411); and
A second stopper (42) coupled to the latch assembly (30) of the second circuit breaker (100 b) to move with the latch assembly (30);
Wherein the second limiting member (42) is staggered from the locking slot (411) when the handle (20) of the first circuit breaker (100 a) is in a closing position; and the second stopper (42) is inserted into the locking slot (411) to prevent the first stopper (41) from moving in a state that the handle (20) of the second circuit breaker (100 b) is at a closing position.
2. The double power transfer switching apparatus according to claim 1, wherein a first chute (11) and a second chute (12) communicating with each other are configured between adjacent sides of the housing (10) of the first circuit breaker (100 a) and the housing (10) of the second circuit breaker (100 b);
The first limiting piece (41) is positioned in the first sliding groove (11) and can move along the sliding direction limited by the first sliding groove (11);
The second limiting piece (42) is positioned in the second sliding groove (12) and can move along the sliding direction limited by the second sliding groove (12).
3. Double power transfer switching device according to claim 2, characterized in that at least one of the housing (10) of the first circuit breaker (100 a) and the housing (10) of the second circuit breaker (100 b) is provided with the first runner (11) and the second runner (12).
4. The dual power conversion switch device as claimed in claim 2, further comprising:
And a partition member which is provided between the housing (10) of the first circuit breaker (100 a) and the housing (10) of the second circuit breaker (100 b), and which is configured with the first chute (11) and the second chute (12) penetrating through the partition member.
5. The double power transfer switching device according to any one of claims 2 to 4, wherein the housing (10) of the first circuit breaker (100 a) is provided with a first through hole (13) at a position corresponding to the first chute (11), and the housing (10) of the second circuit breaker (100 b) is provided with a second through hole (14) at a position corresponding to the second chute (12);
The first stop (41) is coupled to the latch assembly (30) of the first circuit breaker (100 a) along the first through hole (13), and the second stop (42) is coupled to the latch assembly (30) of the second circuit breaker (100 b) along the second through hole (14).
6. Double power transfer switching device according to claim 5, characterized in that the sliding direction of the first runner (11) and the sliding direction of the second runner (12) are mutually perpendicular.
7. The dual power conversion switch device according to claim 6, wherein the side of the first stopper (41) facing the second stopper (42) is provided with the locking groove (411), and the locking groove (411) avoids the end position of the first stopper (41).
8. The dual power transfer switching device according to claim 7, wherein an end of the second stopper (42) facing the first stopper (41) is provided with a stopper portion (421), and a cross-sectional area of the stopper portion (421) is smaller than a cross-sectional area of an end of the second stopper (42) in a direction perpendicular to a sliding direction of the second chute.
9. The dual power conversion switch device according to claim 5, wherein the latch assembly (30) comprises:
a bracket (31) rotatably connected to the housing about a first axis (32);
a first locking member (33) rotatably connected to the bracket (31) about a second axis (34), and configured with a support portion (331) and a body portion (332); and
A second locking member (35) rotatably connected to the bracket (31) around a third shaft (36) to be snap-coupled to the supporting portion (331) of the first locking member (33);
Wherein the first stop (41) is coupled to the body portion (332) of the first circuit breaker (100 a), and the second stop (42) is coupled to the second shaft (34) of the second circuit breaker (100 b).
10. The dual power conversion switch device according to claim 9, characterized in that the body portion (332) of the first circuit breaker (100 a) is configured with a boss (333), the first stopper (41) is configured with a first connection hole (412), the boss (333) is inserted into the first connection hole (412) and the first through hole (13), and the size of the boss (333) is smaller than the size of the first through hole (13) and the size of the first connection hole (412);
The second stopper (42) is configured with a second connection hole (422), the second shaft (34) of the second circuit breaker (100 b) is inserted into the second connection hole (422) and the second through hole (14), and the second shaft (34) has a size smaller than the second through hole (14) and the second connection hole (422).
11. A power distribution cabinet comprising a cabinet body and a dual power transfer switching device according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410304286.6A CN117912871A (en) | 2024-03-18 | 2024-03-18 | Dual-power transfer switch equipment and power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410304286.6A CN117912871A (en) | 2024-03-18 | 2024-03-18 | Dual-power transfer switch equipment and power distribution cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117912871A true CN117912871A (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410304286.6A Pending CN117912871A (en) | 2024-03-18 | 2024-03-18 | Dual-power transfer switch equipment and power distribution cabinet |
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| Country | Link |
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| CN (1) | CN117912871A (en) |
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