CN216528508U

CN216528508U - Bypass cabinet

Info

Publication number: CN216528508U
Application number: CN202123172892.8U
Authority: CN
Inventors: 韩震坡; 刘念东
Original assignee: Invt Power Electronics Suzhou Co ltd
Current assignee: Invt Power Electronics Suzhou Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-05-13
Anticipated expiration: 2031-12-16

Abstract

The application relates to the technical field of electrical cabinets, and provides a bypass cabinet which comprises an upper isolating switch, a power frequency conversion switch, a cabinet body and an interlocking baffle plate; a first connecting rod and a second connecting rod are arranged on the cabinet body, the first connecting rod is connected to the upper isolating switch, and the second connecting rod is connected to the industrial frequency conversion switch; the first connecting rod is provided with a first operating end, and the second connecting rod is provided with a second operating end; the interlocking baffle is movably connected with the cabinet body and is provided with a first through hole and a second through hole; the interlocking baffle has an upper isolation on-off state and an industrial frequency conversion switching state, and at most one of the first operating end or the second operating end is exposed out of the interlocking baffle in different states. According to the embodiment of the application, only one of the first operating end or the second operating end can be operated at the same time, when the worker frequency conversion is switched, the isolating switch and the worker frequency conversion switch are operated through the preset sequence, the live-line operation frequency conversion circuit is avoided, and the problem of short-circuit tripping caused by improper operation of the bypass cabinet is effectively avoided.

Description

Bypass cabinet

Technical Field

The application relates to the technical field of electrical cabinets, and particularly provides a bypass cabinet.

Background

The bypass cabinet is arranged for ensuring the reliable and uninterrupted operation of the load, and the rotating speed of the load is controlled by the frequency converter under the normal condition of the frequency converter; in the event of a frequency converter failure, power is distributed to the load via the bypass cabinet. The bypass cabinet is mainly used in a power supply system, and can continuously supply power at any time when the power supply system is overhauled or breaks down.

The bypass cabinet has a double-knife switch structure, the knife switch is controlled by a connecting rod, and the switch of the knife switch is switched by controlling the rotation of the connecting rod, so that the switching of power frequency and frequency conversion is realized. During operation, the two disconnecting links cannot be closed or opened at the same time, otherwise, short circuit is caused, and tripping is caused; therefore, only one knife switch can be operated, and two knife switches cannot be operated simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model provides a bypass cabinet can make the switch unable simultaneous operation, has avoided the problem of the short circuit tripping operation that leads to two switch maloperation simultaneously.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, an embodiment of the present application provides a bypass cabinet, which includes an upper isolation switch, a power frequency conversion switch, a cabinet body, and an interlocking baffle; the power frequency conversion switch is used for switching on to a frequency conversion gear or switching off to a power frequency gear; the cabinet body is provided with a first connecting rod and a second connecting rod, the first connecting rod is connected with the upper isolating switch and used for controlling the opening and closing of the upper isolating switch, and the second connecting rod is connected with the industrial frequency conversion switch and used for controlling the opening and closing of the industrial frequency conversion switch; the first connecting rod is provided with a first operating end, and the second connecting rod is provided with a second operating end; the interlocking baffle is movably connected with the cabinet body and can move on the cabinet body, and a first through hole and a second through hole are formed in the interlocking baffle; the interlocking baffle has an upper isolation on-off state and an industrial frequency conversion switching state, when the interlocking baffle is in the upper isolation on-off state, the first through hole is right opposite to the first operating end, and the interlocking baffle covers the second operating end; when the interlocking baffle is in a power frequency conversion switching state, the second through hole is just opposite to the second operation end, and the interlocking baffle covers the first operation end.

The beneficial effects of the embodiment of the application are as follows: according to the bypass cabinet provided by the embodiment of the application, the interlocking baffle is arranged on the cabinet body, and the interlocking baffle is controlled to move to be switched to the upper isolation on-off state or the power frequency conversion switching state, so that the second operating end is covered when the first operating end is exposed, or the first operating end is covered when the second operating end is exposed, namely the first operating end and the second operating end can be exposed at most at one time; when the worker frequency conversion is switched, the upper isolating switch and the worker frequency conversion switch are operated through a preset sequence, so that the frequency conversion circuit is prevented from being operated in a live mode, and the problem of short-circuit tripping caused by improper operation of the bypass cabinet is effectively solved.

In one embodiment, the interlocking flap further has a closed state, and the interlocking flap covers the first operating end and the second operating end when the interlocking flap is in the closed state.

By adopting the technical scheme, the interlocking baffle can also move to simultaneously cover the first operating end and the second operating end, so that the effect of isolation protection can be achieved when the operation is not needed.

In one embodiment, the interlocking baffle is provided with a bolt; a door plate is arranged on one side, close to the interlocking baffle, of the cabinet body, an unlocking hole is formed in the door plate and is provided with a first hole part, a second hole part and a third hole part, and a bolt is locked in the first hole part, the second hole part or the third hole part and can move in the first hole part, the second hole part or the third hole part; when the bolt is locked in the first hole part, the interlocking baffle is in a power frequency conversion switching state; the bolt is locked in the second hole part so as to enable the interlocking baffle plate to be in an upper separation and combination state; the latch is locked in the third hole portion to place the interlock shutter in a closed state.

By adopting the technical scheme, the interlocking baffle is pushed to move by operating the bolt, and the bolt is moved and locked in the first hole part, the second hole part or the third hole part, so that the interlocking baffle is correspondingly in an I-conversion switching state, an upper isolation opening and closing state or a closing state.

In one embodiment, the door panel is provided with a first avoidance hole opposite to the first operating end and a second avoidance hole opposite to the second operating end.

By adopting the technical scheme, the door plate is provided with the first avoidance hole and the second avoidance hole, when the first operation end or the second operation end is exposed through the first through hole or the second through hole on the interlocking baffle plate, the first operation end or the second operation end can be exposed out of the door plate through the first avoidance hole or the second avoidance hole, so that the first operation end or the second operation end can be operated and rotated outside the door plate.

In one embodiment, the bypass cabinet further comprises a lock for locking the interlocking flap.

By adopting the technical scheme, the interlocking baffle can be locked by the locking piece to keep a static state.

In one embodiment, the door plate is provided with an operation hole opposite to the locking member, and the door plate is used for covering the cabinet body so that the operation end surface of the locking member is exposed out of the door plate.

By adopting the technical scheme, the door plate is provided with the operation hole, when the door plate is closed, the operation end face of the locking piece can be exposed out of the door plate through the operation hole, so that the locking piece can be operated conveniently.

In one embodiment, the locking member is disposed on the door panel, and an operating end surface of the locking member is exposed out of the door panel, and the door panel is used for covering the cabinet body, so that an executing end of the locking member faces the interlocking flap and is used for locking the interlocking flap.

Through adopting foretell technical scheme, through installing the locking piece on the door plant so that the operation, simultaneously, when closing the door plant, the locking piece alright lock the operation to interlocking baffle.

In one embodiment, the cabinet is provided with a limiting member for limiting the displacement of the interlocking baffle.

Through adopting foretell technical scheme, limit the displacement range of interlocking baffle through set up the locating part on the cabinet body, prevent that interlocking baffle from removing excessively and leading to inefficacy.

In one embodiment, the cabinet body is provided with a slide rail, and the interlocking baffle is arranged on the slide rail and is in sliding fit with the slide rail; the limiting piece is formed on the slide rail.

Through adopting foretell technical scheme, set up the interlocking baffle on the slide rail to through the sliding fit with the slide rail sliding on the slide rail, the interlocking baffle removes more steadily.

In one embodiment, the interlocking baffle is provided with a sliding groove along the sliding direction of the interlocking baffle, and the limiting member is inserted into the sliding groove.

By adopting the technical scheme, when the interlocking baffle slides on the slide rail, the limiting piece relatively moves in the slide groove, so that the moving range of the interlocking baffle is the length range of the slide groove.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is an electrical schematic diagram of a bypass cabinet provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a bypass cabinet according to an embodiment of the present disclosure;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a schematic structural diagram of the bypass cabinet according to the embodiment of the present disclosure after the door panel is taken out;

fig. 5 is a partially enlarged view of a portion B of fig. 4.

Wherein, in the figures, the respective reference numerals:

100. a bypass cabinet; 10. an upper isolating switch; 20. a power frequency conversion switch; 30. a cabinet body; 31. a first link; 311. a first operation end; 32. a second link; 321. a second operation terminal; 40. interlocking baffles; 41. a first through hole; 42. a second through hole; 43. a bolt; 44. a chute; 50. a door panel; 51. unlocking the hole; 511. a first hole portion; 512. a second hole portion; 513. a third hole portion; 52. a first avoidance hole; 53. a second avoidance hole; 60. a locking member; 70. a limiting member; 80. a slide rail.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The bypass cabinet is set for ensuring the reliable and uninterrupted operation of the load, and is mainly used in a power supply system, and can continuously supply power at any time when the power supply system is overhauled or breaks down. The bypass cabinet has a double-knife switch structure, the knife switch is controlled by a connecting rod, and the switch of the knife switch is switched by controlling the rotation of the connecting rod, so that the switching of power frequency and frequency conversion is realized. During operation, the two disconnecting links cannot be closed or opened at the same time, otherwise, short circuit is caused, and tripping is caused; therefore, only one knife switch can be operated at the same time, but two knife switches cannot be operated at the same time.

Therefore, the embodiment of the application provides a bypass cabinet, and the first operation end and the second operation end can only be exposed at most one of the first operation end and the second operation end at the same time by operating the interlocking baffle, so that the first operation end and the second operation end can not be operated at the same time, the upper isolating switch and the industrial frequency conversion switch can not be closed or opened at the same time, and the problem of short circuit trip caused by improper operation of the bypass cabinet is effectively avoided.

Referring to fig. 1, 4 and 5, in a first aspect, an embodiment of the present application provides a bypass cabinet 100, which includes an upper isolation switch 10, an industrial frequency conversion switch 20, a cabinet body 30 and an interlocking baffle 40; the industrial frequency conversion switch 20 is used for switching on to a frequency conversion gear or switching off to a power frequency gear; a first connecting rod 31 and a second connecting rod 32 are arranged on the cabinet body 30, the first connecting rod 31 is connected to the upper isolating switch 10 and used for controlling the opening and closing of the upper isolating switch 10, and the second connecting rod 32 is connected to the industrial frequency conversion switch 20 and used for controlling the opening and closing of the industrial frequency conversion switch 20; the first link 31 has a first operating end 311, the second link 32 has a second operating end 321; the interlocking baffle 40 is movably connected to the cabinet body 30 and can move on the cabinet body 30, and a first through hole 41 and a second through hole 42 are formed in the interlocking baffle 40; the interlocking baffle 40 has an upper isolation on-off state and an industrial frequency conversion switching state, when the interlocking baffle is in the upper isolation on-off state, the first through hole 41 is right opposite to the first operating end 311, and the interlocking baffle 40 covers the second operating end 321; when the interlocking baffle 40 is in the power frequency conversion switching state, the second through hole 42 is just opposite to the second operation end 321, and the interlocking baffle 40 covers the first operation end 311.

The above-mentioned upper isolating switching-on/off state refers to a state that the first through hole 41 of the interlocking baffle 40 is right opposite to the first operating end 311, in this state, a worker can control the first operating end 311 to rotate through the first through hole 41, so as to control the first link 31 to switch on/off of the upper isolating switch 10, and at this time, the second operating end 321 is covered by the interlocking baffle 40, and the second operating end 321 cannot be operated; the above-mentioned switching state of the manual frequency conversion means a state that the second through hole 42 of the interlocking baffle 40 is aligned with the second operation end 321, and in this state, the worker can control the rotation of the second operation end 321 through the second through hole 42, so as to control the second connecting rod 32 to switch the opening and closing of the manual frequency conversion switch 20.

As shown in fig. 1, which is an electrical schematic diagram of a bypass cabinet 100, an industrial frequency conversion switch 20 is used to switch to an industrial frequency circuit or a frequency conversion circuit, and an upper isolation switch 10 is used to control a knife switch to be switched on and off. By rotating the first operating end 311 to rotate the first link 31, the knife of the upper isolation switch 10 connected to the first link 31 is rotated to adjust the opening and closing; by rotating the second operation end 321 to rotate the second connecting rod 32, the knife of the frequency conversion switch 20 connected to the second connecting rod 32 is rotated to adjust the opening and closing. The first connecting rod 31 and the second connecting rod 32 are arranged in parallel, so that the first operating end 311 and the second operating end 321 face to the same side of the cabinet 30; therefore, the interlocking shutter 40 may be provided on the side toward which the first operation end 311 and the second operation end 321 face. Preferably, the first operation end 311 and the second operation end 321 are disposed on the same straight line parallel to the vertical direction, and at this time, the interlocking barrier 40 will move in the vertical direction.

The interlocking flap 40 is movably coupled to the cabinet 30 such that the interlocking flap 40 can move on the cabinet 30, for example, laterally, longitudinally, or in a direction oblique to the vertical; the moving direction of the interlocking barrier 40 is not limited, and it is sufficient that the interlocking barrier 40 can make the first through hole 41 face the first operating end 311 or the second through hole 42 face the second operating end 321 when moving. It is understood that the cabinet body 30 is generally formed by splicing upright posts and cross beams, and therefore, the interlocking barrier 40 can be slidably connected to the upright posts, so that the interlocking barrier 40 can slide along the length direction of the upright posts; alternatively, the interlocking flap 40 may be slidably connected to the cross beam such that the interlocking flap 40 may slide along the length of the cross beam, or a transverse rail may be provided on the upright, the interlocking flap 40 being connected to and sliding on the rail; alternatively, longitudinal rails are provided on the cross-beam, and the interlocking baffles 40 are attached to and slide on the rails.

When the bypass cabinet 100 needs to be switched from the variable frequency to the power frequency, the interlocking baffle 40 can be moved to the upper isolation opening and closing state to enable the first through hole 41 to be right opposite to the first operating end 311, and at the moment, the first operating end 311 can be operated through the first through hole 41 from the outer side of the interlocking baffle 40, so that the first connecting rod 31 rotates to control the upper isolation switch 10 to be opened; then, the interlocking baffle 40 is moved to the industrial frequency conversion switching state, so that the second through hole 42 is right opposite to the second operating end 321, at this time, the second operating end 321 can be operated through the second through hole 42 from the outer side of the interlocking baffle 40, and the second connecting rod 32 rotates to control the industrial frequency conversion switch 20 to be switched off to the industrial frequency circuit; and completing the operation of switching the frequency conversion to the power frequency through the steps.

When the bypass cabinet 100 needs to be switched from power frequency to frequency conversion, the interlocking baffle 40 is moved to an industrial frequency conversion switching state, the second operation end 321 is operated, the second connecting rod 32 rotates to control the industrial frequency conversion switch 20 to be switched on to a frequency conversion circuit, then the interlocking baffle 40 is moved to an upper isolation on-off state, and the first operation end 311 is operated, so that the first connecting rod 31 rotates to control the upper isolation switch 10 to be switched on; and finishing the operation of switching the power frequency to the frequency conversion through the steps.

In the bypass cabinet 100 provided in the embodiment of the present application, the interlocking baffle 40 is disposed on the cabinet body 30, and the interlocking baffle 40 is controlled to move to switch to the upper isolation switching state or the power conversion switching state, so that the second operating end 321 is covered when the first operating end 311 is exposed, or the first operating end 311 is covered when the second operating end 321 is exposed, that is, at most, only one of the first operating end 311 and the second operating end 321 can be exposed at the same time; when the worker frequency conversion is switched, the upper isolating switch 10 and the worker frequency conversion switch 20 are operated through a preset sequence, so that a frequency conversion circuit is prevented from being operated in a live mode, and the problem of short-circuit tripping caused by improper operation of the bypass cabinet 100 is effectively solved.

Referring to fig. 1, 4 and 5, in an embodiment, the interlocking flap 40 further has a closed state, and when the interlocking flap 40 is in the closed state, the interlocking flap 40 covers the first operation end 311 and the second operation end 321. When the upper isolating switch 10 needs to be operated, the interlocking baffle 40 can be moved to an isolated on-off state; when the frequency-variable switch 20 of the operator is required to be operated, the interlocking baffle 40 can be moved to the frequency-variable switching state of the operator; when the power frequency and the frequency conversion do not need to be switched, the interlocking baffle 40 can be moved to a closed state, and at this time, the interlocking baffle 40 covers the first operation end 311 and the second operation end 321 so as to separate the first operation end 311 from the second operation end 321, thereby avoiding misoperation of the first operation end 311 and the second operation end 321.

Referring to fig. 1 to 5, in one embodiment, the interlocking baffle 40 is provided with a latch 43; a door panel 50 is provided on a side of the cabinet 30 adjacent to the interlock fence 40, an unlocking hole 51 is formed in the door panel 50, the unlocking hole 51 has a first hole 511, a second hole 512, and a third hole 513, and the latch 43 is locked to the first hole 511, the second hole 512, or the third hole 513 and is movable in the first hole 511, the second hole 512, or the third hole 513. When the latch 43 is locked in the first hole 511, the interlocking baffle 40 is in the power frequency conversion switching state; when the latch 43 is locked in the second hole 512, the interlocking shutter 40 is in the upper isolated open/close state; when the latch 43 is locked in the third aperture 513, the interlock flap 40 is in a closed position. Specifically, the first hole portion 511, the second hole portion 512, and the third hole portion 513 are sequentially arranged, and when the latch 43 is locked in the third hole portion 513 in the initial state, that is, the interlock barrier 40 is in the closed state, the latch 43 is unlocked and moved, and the latch 43 will sequentially pass through the second hole portion 512 and the first hole portion 511, that is, the interlock barrier 40 is first switched to the upper isolation opening and closing state and then switched to the manual frequency conversion switching state. The latch 43 may be a spring to pull the latch 43, and by pulling the latch 43 outward, the head of the latch 43 with a larger cross section is pulled out of the first hole 511, the second hole 512 or the third hole 513, and the body of the latch 43 with a smaller cross section is positioned in the first hole 511, the second hole 512 or the third hole 513, so that the latch 43 can move back and forth in the unlocking hole 51 until the latch 43 is adjusted to the corresponding hole, and the latch 43 is released to restore the head of the latch 43 according to the elastic restoring force of the spring, so that the head of the latch 43 is locked in the corresponding hole, and the state of the interlocking barrier 40 is switched.

Referring to fig. 1 to 5, in an embodiment, the door panel 50 is formed with a first avoiding hole 52 opposite to the first operating end 311 and a second avoiding hole 53 opposite to the second operating end 321. When the door panel 50 is closed, when the interlocking baffle 40 moves to the isolating and closing state or the power and frequency conversion switching state, the first operating end 311 can be exposed out of the door panel 50 through the first through hole 41 and the first avoiding hole 52, or the second operating end 321 can be exposed out of the door panel 50 through the second through hole 42 and the second avoiding hole 53, so that the first operating end 311 or the second operating end 321 can be operated and rotated outside the door panel 50. An external handle can be used, the connecting end of the handle penetrates through the first through hole 41 and the first avoiding hole 52 and is connected to the first operating end 311, and the first operating end 311 can be rotated by shaking the handle; similarly, a handle can also be attached to the second operating end 321 and the second operating end 321 can be rotated by rocking the handle.

Referring to fig. 1-5, in one embodiment, the bypass cabinet 100 further includes a locking member 60, the locking member 60 is used for locking the interlocking flap 40; the interlocking flap 40 may be locked to remain stationary using the locking member 60. The locking member 60 may be mechanically locked, for example, a locking pin is used, and after the locking member 60 moves to a designated position, the locking pin is inserted into the locking member 60 and the cabinet 30, so that the locking member 60 is locked at the current position; alternatively, the locking member 60 may be an electromagnetic lock having an operation panel and an actuation end, and the actuation end of the electromagnetic lock is locked to or unlocked from the interlock plate 40 by controlling the operation panel.

Referring to fig. 1 to 5, in an embodiment, the door panel 50 is provided with an operation hole opposite to the locking element 60, and the door panel 50 is used for covering the cabinet 30, so that an operation end surface of the locking element 60 is exposed out of the door panel 50. By forming the operation hole on the door panel 50, when the door panel 50 is closed, the operation end surface of the locking member 60 can be exposed out of the door panel 50 through the operation hole, so as to operate the locking member 60.

In one embodiment, the locking element 60 is disposed on the door panel 50, and an operation end surface of the locking element 60 is exposed out of the door panel 50, and the door panel 50 is configured to cover the cabinet 30, so that an execution end of the locking element 60 faces the interlocking flap 40 and is configured to lock the interlocking flap 40. The locking member 60 is installed on the door panel 50 to facilitate the operation, and the locking member 60 performs the locking operation of the interlocking shutter 40 when the door panel 50 is closed.

Referring to fig. 1 to 5, in one embodiment, the cabinet 30 is provided with a limiting member 70 for limiting the displacement of the interlocking baffle 40. By providing the stopper 70 on the cabinet 30 to limit the moving range of the interlocking barrier 40, the interlocking barrier 40 is prevented from moving excessively to cause failure. The limiting members 70 may be limiting stoppers arranged on the columns, the limiting stoppers are arranged at two opposite ends of the interlocking baffle 40 in the moving direction, and the interlocking baffle 40 is limited to move within the range enclosed by the limiting stoppers; or, the limiting member 70 is formed on the column, and a limiting hole for the limiting member 70 to penetrate is formed on the interlocking baffle 40, and when the interlocking baffle 40 moves, the limiting member 70 moves relatively in the limiting hole.

Referring to fig. 1 to 5, in an embodiment, a sliding rail 80 is disposed on the cabinet 30, and the interlocking baffle 40 is disposed on the sliding rail 80 and slidably engaged with the sliding rail 80; the stopper 70 is formed on the slide rail 80. The slide rail 80 is disposed toward the first operating end 311 and the second operating end 321, so that the slide rail 80 is located on a connecting line of the first operating end 311 and the second operating end 321; when the interlock shutter 40 slides on the slide rail 80, the interlock shutter 40 can slide toward the first operation end 311 or the second operation end 321.

Referring to fig. 1 to 5, in an embodiment, the interlocking baffle 40 has a sliding slot 44 along a sliding direction thereof, and the limiting member 70 is inserted into the sliding slot 44. When the interlocking baffle 40 slides on the slide rail 80, the limiting member 70 relatively moves in the slide groove 44, so that the moving range of the interlocking baffle 40 is the length range of the slide groove 44. In the present embodiment, the interlocking baffle 40 has two sliding slots 44 along its sliding direction, the limiting member 70 is a screw fixed on the sliding rail 80, and the screw is inserted into the corresponding sliding slot 44; when the interlocking baffle 40 slides, the two sliding slots 44 move synchronously relative to the corresponding screws respectively until the screws abut against one end of the sliding slots 44.

To sum up, when the bypass cabinet 100 is operated to change the frequency from the power frequency to the frequency, the electromagnetic lock is firstly operated, so that the electromagnetic lock unlocks the interlocking baffle 40, and the position of the interlocking baffle 40 can be adjusted through the bolt 43; the latch 43 is locked in the third hole 513 in an initial state, that is, the interlocking baffle 40 is in a closed state, the latch 43 is pulled to be unlocked, then the latch 43 is pulled upwards to pass through the second hole 512 until the latch is in the first hole 511, and then the latch is locked, so that the interlocking baffle 40 is in an on-duty variable frequency switching state, and the second operating end 321 is exposed out of the door panel 50 through the second through hole 42 and the second avoiding hole 53; inserting an external handle into the second operation end 321, then shaking the handle to rotate the second connecting rod 32 and control the variable frequency switch 20 to switch on to the variable frequency circuit, and then pulling out the external handle; the bolt 43 is pulled again to be unlocked from the first hole part 511, then the bolt 43 is slid downwards into the second hole part 512 and then locked, so that the interlocking baffle 40 is in an upper isolated opening and closing state, and the first operating end 311 is exposed out of the door panel 50 through the first through hole 41 and the first avoiding hole 52; inserting an external handle into the first operating end 311, then shaking the handle to rotate the first link 31 and control the upper disconnecting switch 10 to switch on, and then pulling out the external handle; finally, the latch 43 is pulled to be unlocked from the second hole portion 512, and then the latch 43 is slid into the third hole portion 513 and locked, so that the interlocking shutter 40 is in the closed state, the first operating end 311 and the second operating end 321 are both covered by the interlocking shutter 40 to be isolated, and then the electromagnetic lock is operated to lock the interlocking shutter 40.

When the bypass cabinet 100 is operated to adjust from the frequency conversion to the power frequency, firstly, the electromagnetic lock is operated, so that the electromagnetic lock unlocks the interlocking baffle 40, and the position of the interlocking baffle 40 can be adjusted through the bolt 43; the latch 43 is initially locked in the third aperture portion 513, i.e., the interlock flap 40 is in a closed position; the latch 43 is pulled out to be unlocked, and then the latch 43 is pulled upwards to be locked in the second hole part 512, so that the interlocking baffle 40 is in an upper isolated opening and closing state, and the first operating end 311 is exposed out of the door panel 50 through the first through hole 41 and the first avoiding hole 52; inserting an external handle into the first operating end 311, then shaking the handle to rotate the first connecting rod 31 and control the upper isolating switch 10 to open, and then pulling out the external handle; the latch 43 is pulled again to be unlocked from the second hole portion 512, and then lifted into the first hole portion 511 to be locked, so that the interlocking baffle 40 is in the manual frequency conversion switching state, and the second operating end 321 is exposed out of the door panel 50 through the second through hole 42 and the second avoiding hole 53; inserting an external handle into the second operating end 312, then shaking the handle to rotate the second connecting rod 32 and control the industrial frequency conversion switch 20 to open so as to switch to the industrial frequency circuit, and then pulling out the external handle; finally, the latch 43 is pulled to be unlocked from the first hole portion 511, and then the latch 43 is slid downward through the second hole portion 512 until it is locked in the third hole portion 513, so that the interlocking shutter 40 is in the closed state, and the first operating end 311 and the second operating end 321 are both covered by the interlocking shutter 40 to be isolated, and then the electromagnetic lock is operated to lock the interlocking shutter 40.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. A bypass cabinet, comprising:

an upper isolating switch;

the power frequency conversion switch is used for switching on to a frequency conversion gear or switching off to a power frequency gear;

the power frequency conversion switch comprises a cabinet body, wherein a first connecting rod and a second connecting rod are arranged on the cabinet body, the first connecting rod is connected to the upper isolating switch and used for controlling the opening and closing of the upper isolating switch, and the second connecting rod is connected to the power frequency conversion switch and used for controlling the opening and closing of the power frequency conversion switch; the first connecting rod has a first operating end and the second connecting rod has a second operating end;

the interlocking baffle is movably connected to the cabinet body and can move on the cabinet body, and a first through hole and a second through hole are formed in the interlocking baffle; the interlocking baffle has an upper isolation on-off state and an industrial frequency conversion switching state, when the interlocking baffle is in the upper isolation on-off state, the first through hole is right opposite to the first operating end, and the interlocking baffle covers the second operating end; when the interlocking baffle is in the power frequency conversion switching state, the second through hole is right opposite to the second operation end, and the interlocking baffle covers the first operation end.

2. The bypass cabinet according to claim 1, wherein: the interlocking baffle plate is also provided with a closed state, and when the interlocking baffle plate is in the closed state, the interlocking baffle plate covers the first operating end and the second operating end.

3. The bypass cabinet according to claim 2, wherein: the interlocking baffle is provided with a bolt; a door plate is arranged on one side, close to the interlocking baffle, of the cabinet body, an unlocking hole is formed in the door plate, the unlocking hole is provided with a first hole part, a second hole part and a third hole part, and the bolt is locked in the first hole part, the second hole part or the third hole part and can move in the first hole part, the second hole part or the third hole part;

when the bolt is locked in the first hole part, the interlocking baffle is in the I/O frequency conversion switching state; when the bolt is locked in the second hole part, the interlocking baffle is in the upper isolation opening and closing state; when the latch is locked in the third hole portion, the interlocking shutter is in the closed state.

4. The bypass cabinet according to claim 3, wherein: the door plate is provided with a first avoidance hole opposite to the first operation end and a second avoidance hole opposite to the second operation end.

5. The bypass cabinet according to claim 3, wherein: the bypass cabinet further includes a lock for locking the interlocking flap.

6. The bypass cabinet according to claim 5, wherein: the door plate is provided with an operating hole opposite to the locking piece, and the door plate is used for covering the cabinet body so that the operating end face of the locking piece is exposed out of the door plate.

7. The bypass cabinet according to claim 5, wherein: the locking piece is arranged on the door plate, the operating end face of the locking piece is exposed out of the door plate, and the door plate is used for covering the cabinet body, so that the executing end of the locking piece faces the interlocking baffle and is used for locking the interlocking baffle.

8. A bypass cabinet according to any one of claims 1 to 7, wherein: the cabinet body is provided with a limiting piece for limiting the displacement of the interlocking baffle.

9. The bypass cabinet according to claim 8, wherein: the cabinet body is provided with a slide rail, and the interlocking baffle is arranged on the slide rail and is in sliding fit with the slide rail; the limiting piece is formed on the sliding rail.

10. The bypass cabinet according to claim 9, wherein: the interlocking baffle is provided with a sliding groove along the sliding direction of the interlocking baffle, and the limiting part is inserted into the sliding groove.