CN218216306U - Power supply switching device - Google Patents
Power supply switching device Download PDFInfo
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- CN218216306U CN218216306U CN202221750971.4U CN202221750971U CN218216306U CN 218216306 U CN218216306 U CN 218216306U CN 202221750971 U CN202221750971 U CN 202221750971U CN 218216306 U CN218216306 U CN 218216306U
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Abstract
The utility model relates to a power supply switching device, which is used for a distribution board shutdown maintenance window to supply power again to a distribution electric board load switch; the distribution board includes the cabinet body and locates a plurality of drawer switches in the cabinet body, and power supply switching device is configured to can replace the drawer switch, and power supply switching device includes: a device body; the switch assembly is arranged on the device body and comprises a switch wire inlet end and a switch wire outlet end; the switch outlet end is electrically connected to a load drawer switch outlet of the distribution board. Above-mentioned power supply switching device can directly take out the drawer switch of distribution board, and it is internal to insert power supply switching device into the cabinet of distribution board again to the realization is treated the power supply unit and is carried out interim power supply, has avoided operating personnel to need the operation of tearing open the line when interim power supply, thereby has reduced operating personnel and has walked alternate risk, has also effectively shortened interim power supply operating time, has reduced the load and has lost the power supply time.
Description
Technical Field
The utility model relates to an electrical equipment maintenance technical field especially relates to a power supply switching device.
Background
The power distribution system of a nuclear power plant is a main component for ensuring the normal operation and the safety of the nuclear power plant, and for this reason, the power distribution system needs to be periodically overhauled to ensure the safety. When a distribution system is shut down and repaired, a large number of devices of the nuclear power plant cannot be used due to power failure, but some devices of the nuclear power plant cannot be powered off, for example, important systems of a Siemens distribution board must be kept in a powered-on working state, so that the important devices need to be temporarily powered on, and the nuclear power plant generally adopts a load side disconnecting and terminating mode for temporary power supply.
In the temporary power supply mode, in the process of disconnecting and connecting wires, the distribution board is in a power-on running state, an operator needs to perform disconnecting and connecting wire operation on the outgoing cable bin with a very narrow position, the electric shock risk is high, the risk that the operator goes wrong at intervals is also high, cables need to be disconnected and connected twice, and time and labor are wasted.
SUMMERY OF THE UTILITY MODEL
Therefore, the power supply switching device is needed to solve the problem of defects in temporary power supply of equipment in the maintenance process of a power distribution system, and can effectively reduce the risk of a wrong interval of an operator and shorten the temporary power supply operation time.
According to one aspect of the application, a power supply switching device is provided, which is used for a distribution board outage access window to supply power again to a distribution board load switch; the distribution board comprises a cabinet body and a plurality of drawer switches arranged in the cabinet body, the power supply switching device is configured to be capable of replacing the drawer switches, and the power supply switching device comprises:
a device body; and
a switch assembly mounted to the apparatus body; the switch assembly comprises a switch wire inlet end and a switch wire outlet end, and the switch wire inlet end and the switch wire outlet end are electrically connected;
the switch wire outlet end is electrically connected with a load drawer switch wire outlet of the switchboard.
In one embodiment, the switch assembly further comprises an outlet contact;
the outlet contact is arranged at the switch outlet end of the power supply switching device and is plugged into the adapter in the switch chamber of the switchboard in an electrical connection mode.
In one embodiment, the switch assembly includes four outlet contacts,
the outgoing line contact supplies power to a two-phase power, three-phase power or three-phase four-wire system load switch by means of the adapter;
the adapter is electrically connected to the two-phase power, three-phase power or three-phase four-wire system load switch.
In one embodiment, a positioning groove for the drawer switch is arranged in the switch chamber on the cabinet body;
the power supply switching device also comprises a locking mechanism;
one end of the locking mechanism is arranged on the device body, and the other end of the locking mechanism is used for being connected into the positioning groove;
when the device body is inserted into the cabinet body, the locking mechanism is configured to be capable of locking the device body for locking the switch assembly.
In one embodiment, the lock mechanism includes a mechanism body and a lock portion; the mechanism body is arranged on the device body, the locking part is connected to the mechanism body and provided with a locking surface, and an included angle is formed between the locking surface and the device body along the insertion direction of the cabinet body;
when the locking part is in a locking state, the locking part is inserted into the positioning groove, and the locking surface abuts against the inner side groove wall of the positioning groove so as to be used for locking the device body in the inserting direction.
In one embodiment, a width dimension of the lock portion in the insertion direction is configured to gradually decrease from a side close to the apparatus body to a side away from the apparatus body in a direction perpendicular to the insertion direction.
In one embodiment, the power supply switching device comprises two locking mechanisms;
the two locking mechanisms are respectively arranged on two opposite sides of the device body, which are perpendicular to the device body, along the insertion direction of the cabinet body.
In one embodiment, the power supply adapter further comprises an aviation docking plug;
and the two opposite ends of the aviation butting plug are respectively and electrically connected with the switch incoming line end and the external power supply.
In one embodiment, the power supply switching device further comprises a circuit breaker;
one end of the breaker is electrically connected with the aviation butt plug, and the other end of the breaker is used for being connected with the outgoing line contact.
In one embodiment, the power supply switching device further comprises an indicator light;
the indicating lamp is installed on the outer side of the device body and electrically connected to the switch assembly and used for indicating whether the power supply switching device supplies power successfully or not.
Above-mentioned power supply switching device, through switch incoming line terminal electric connection external power supply, switch leading-out terminal electric connection distribution board, external power supply can provide the electric energy for power supply switching device during the distribution board overhauls, the drawer switch of distribution board is directly taken out, and insert the cabinet body of distribution board with power supply switching device, and then realize treating power supply equipment and supply power temporarily, avoided operating personnel need tear open the line operation when supplying power temporarily, thereby the risk of operating personnel mistake interval has been reduced, the interim power supply activity duration has also effectively been shortened, load power loss time has been reduced.
Drawings
Fig. 1 is a schematic structural view of the power supply switching device of the present invention;
fig. 2 is a schematic structural view of the power supply switching device according to another angle of the present invention;
fig. 3 is a schematic diagram of the power supply switching device of the present invention;
FIG. 4 is a schematic front view of the locking mechanism of the present invention;
fig. 5 is a schematic diagram of a top view of the locking mechanism of the present invention;
fig. 6 is a schematic diagram of a left side view of the locking mechanism of the present invention.
The reference numbers illustrate:
100. a power supply switching device; 110. a device body; 111. a mounting cavity; 112. a through hole; 120. a switch assembly; 121. switching a wire inlet end; 122. a switch outlet terminal; 123. an outgoing line contact; 130. a locking mechanism; 131. a mechanism body; 132. a lock section; 1321. a locking surface; 140. an aviation docking plug; 150. an indicator light; 160. a circuit breaker.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
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 to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.
Before describing the power supply switching apparatus 100 of the present application, a brief description will be given of an original temporary power supply operation flow of the switchboard. And implementing a temporary power supply flow: power failure isolation → electricity verification → wiring and wiring record drawing removal → switch outgoing cable removal → temporary power supply cable and outgoing cable at the downstream of the switch are terminated → wiring fastening is confirmed → isolation is removed → temporary power supply; and (4) removing the temporary power supply flow: power failure isolation → electricity verification → disconnection of temporary power supply cables and cables exiting from the downstream of the switch → recovery of cables exiting from the switch according to a disconnecting and connecting record diagram → confirmation of fastening of connecting wires → isolation removal → recovery of formal power supply. It can be seen from the above temporary power supply process that in the whole implementation process of the original temporary power supply of the switchboard switch, the downstream cable of the switch needs to be removed and terminated twice, and the cables of the nuclear power station are generally hard cables, so that the cables are difficult to remove and connect, the implementation difficulty is high, and the switchboard is in the operation condition during the implementation and the removal of the temporary power supply, so that the disconnection work in the electrified cable bin has great risk of electric shock and mistaken touch, and the operation time is long.
For convenience of description, in the following embodiments of the present application, an insertion direction of the drawer switch is referred to as a coordinate axis Y direction, another horizontal direction perpendicular to the insertion direction is referred to as a coordinate axis X direction, and a vertical direction perpendicular to the insertion direction is referred to as a coordinate axis Z axis, as shown in coordinate axes in fig. 1, 4 to 6.
Fig. 1 shows a schematic structural diagram of a power supply switching device in an embodiment of the present invention, fig. 2 shows a schematic structural diagram of another angle of the power supply switching device in an embodiment of the present invention, and fig. 3 shows a schematic structural diagram of the power supply switching device in an embodiment of the present invention.
Referring to fig. 1 to 3, the present application provides a power supply switching apparatus 100, the power supply switching apparatus 100 is used for a distribution board outage service window to perform re-power supply on distribution board load switches, the distribution board includes a cabinet body and a plurality of drawer switches disposed in the cabinet body, and the power supply switching apparatus 100 is configured to be capable of replacing the drawer switches.
So, directly take out the drawer switch from the cabinet body of distribution board, insert power supply switching device 100 again and can supply power for the equipment of treating the power supply in the cabinet body of distribution board, easy operation also can reduce operating personnel's electric shock mistake and bump the risk, has improved work efficiency.
It should be noted that the power supply switching device 100 provided in the present application is mainly used for the distribution board outage inspection window to perform re-power supply on the load switch important for distributing the electric power boards, such as the important system of the siemens distribution board.
The power supply switching device 100 includes a device body 110 and a switch assembly 120, and the switch assembly 120 is mounted to the device body 110. Thus, by arranging the switch assembly 120, power can be supplied to the equipment to be powered in the overhauling process of the distribution board, and the equipment to be powered is ensured to be in a normal working condition.
With reference to fig. 1 to 3, in detail, the device body 110 is substantially rectangular, and the device body 110 is opened with a mounting cavity 111, and the mounting cavity 111 can be used for accommodating the switch assembly 120. A plurality of through holes 112 are formed at intervals on the sidewall of the device body 110, the through holes 112 are used for passing through elements such as wires and cables, and the elements such as the wires and the cables are used for electrically connecting structures such as the switch assembly 120 and transmitting electric energy. In a specific use process, the device body 110 is similar to a drawer, and the device body 110 can be inserted into or pulled out of the cabinet body of the distribution board in a drawing and inserting mode. Wherein the insertion direction is shown as the direction of coordinate axis Y in fig. 1.
Thus, the device body 110 is simple in structure, convenient to install and capable of saving the operation time of operators and effectively shortening the power-off time of loads when temporary power supply is carried out, and installation and connection of the switch assembly 120 and other wires and cables can be facilitated by arranging the installation cavity 111 and the through holes 112, so that the whole power supply switching device 100 is simple in structure, light in weight, convenient to carry and strong in reliability.
The switch assembly 120 is mounted on the device body 110 and is accommodated in the mounting cavity 111, specifically, the switch assembly 120 includes a switch incoming line end 121 and a switch outgoing line end 122, the switch incoming line end 121 is electrically connected to the switch outgoing line end 122, the switch incoming line end 121 is electrically connected to an external power supply, and the switch outgoing line end 122 is electrically connected to a load drawer switch outgoing line of the distribution board.
In this way, the switch incoming line end 121 is electrically connected to an external power supply, so that electric energy can be provided for the power supply switching device 100 during the overhaul period of the switchboard, and further, power is temporarily supplied for the equipment to be powered; be used for electric connection to be qualified for the next round of competitions in the load drawer switch of distribution board through switch leading-out terminal 122, can directly take out the drawer switch of distribution board, directly insert the cabinet body of distribution board with power supply switching device 100 again, can treat power supply unit and carry out interim power supply, avoided operating personnel to need the operation of tearing open the line when interim power supply to reduced operating personnel and gone wrong spaced risk, also effectively shortened interim power supply operating time, reduced load power loss time.
In some embodiments, the switch assembly 120 further includes an outlet contact 123. The outlet contact 123 is disposed on the switch outlet 122 of the power supply adapter device 100 and electrically connected to the switch outlet 122, and the outlet contact 123 is plugged into an adapter in the switchboard switch chamber in an electrically connected manner. In other words, the two ends of the outlet contact 123 are electrically connected to the switch outlet 122 and the adapter of the switchboard, respectively.
Thus, after the power supply switching device 100 is inserted into the cabinet body of the distribution board, the outlet contact 123 can be electrically connected to the adapter of the distribution board, so as to supply power to the equipment to be powered temporarily, and the power supply switching device 100 is convenient to install and saves time.
It should be noted that the power supply adapter device 100 provided by the present application only includes the outgoing line contact 123, and does not include the incoming line contact, and the purpose of the outgoing line contact 123 is to ensure that the temporary power supply only supplies power to the downstream load, and no situation of reverse power transmission occurs in the incoming line contact.
In some embodiments, the switch assembly 120 includes four switch outlet terminals 122 and four outlet contacts 123. The adapter is electrically connected to the two-phase electric, three-phase electric, or three-phase four-wire system load switch, so that the outgoing line contact 123 supplies power to the two-phase electric, three-phase electric, or three-phase four-wire system load switch.
Therefore, according to different power supply modes of each load switch, power supply connection can be performed on two-phase, three-phase or three-phase four-wire system loads, so that the load switches of different power supply modes can be flexibly matched, and the adaptability and the efficiency of the power supply switching device 100 are improved.
Fig. 4 shows a schematic diagram of a front view of the locking mechanism in an embodiment of the present invention, fig. 5 shows a schematic diagram of a top view of the locking mechanism in an embodiment of the present invention, and fig. 6 shows a schematic diagram of a left side view of the locking mechanism in an embodiment of the present invention.
The cabinet body of the distribution board is provided with a switch chamber for accommodating a plurality of drawer switches, and the switch chamber on the cabinet body is internally provided with a positioning groove for the drawer switches.
Referring to fig. 4, 5 and 6, in some embodiments, the power supply adapter device 100 further includes a locking mechanism 130. One end of the locking mechanism 130 is mounted to the apparatus body 110, and the other end of the locking mechanism 130 is used to connect to the positioning groove. The locking mechanism 130 is configured to be able to lock the device body 110 for locking the switch assembly 120 when the device body 110 is inserted into the cabinet.
Thus, the locking mechanism 130 can prevent the switch assembly 120 from being pulled out of the cabinet body when the switch assembly is electrified, and the installation performance of the power distribution system is improved.
Specifically, the locking mechanism 130 includes a mechanism body 131 and a locking portion 132, the mechanism body 131 is an irregular plate-shaped structure, the mechanism body 131 is mounted on the apparatus body 110, and the locking portion 132 is connected to the mechanism body 131. The locking portion 132 has a locking surface 1321, the locking surface 1321 and the device body 110 are arranged at an included angle in the insertion direction of the cabinet body, when the locking portion 132 is in a locking state, the locking portion 132 is inserted into the positioning groove, and the locking surface 1321 abuts against the inner side groove wall of the positioning groove so as to be used for locking the device body 110 in the insertion direction. Specifically, in one embodiment, the longitudinal section of the locking portion 132 in the vertical direction is a right triangle, and the width dimension of the locking portion 132 in the insertion direction (as shown in the direction of the coordinate axis X in the drawing) is gradually reduced by the dog from the side close to the apparatus body 110 to the side away from the apparatus body 110 in the direction perpendicular to the insertion direction.
As described above, the locking mechanism 130 can position the power supply switching device 100 when the power supply switching device 100 is inserted into the cabinet of the distribution board, so that the outlet contact 123 of the switch assembly 120 can be in good contact with the adapter of the distribution board, and the locking portion 132 can lock the device body 110 by its own structural characteristics, thereby preventing the switch assembly 120 from being electrically drawn out when the power supply switching device 100 is drawn out, and improving the reliability of the power supply switching device 100.
In a preferred embodiment, the power supply adapter device 100 includes two locking mechanisms 130, and the two locking mechanisms 130 are respectively disposed on two opposite sides of the device body 110 perpendicular to the insertion direction of the device body 110 along the cabinet.
It should be noted that the two locking mechanisms 130 are spaced apart from each other to enhance the locking effect on the switch assembly 120, and the locking mechanisms 130 are designed to correspond to the actual structure of the switchboard and can be matched with the positioning grooves on the switchboard to achieve locking.
In some embodiments, the power supply transition device 100 further includes an air mating plug 140. The opposite ends of the aviation plug 140 are electrically connected to the switch incoming line 121 and the external power source, respectively.
Therefore, the aerial docking plug 140 can improve the adaptability of the power supply switching device 100, so that the power supply switching device 100 can be matched with different cable extension lines according to field requirements to be docked quickly.
In some embodiments, the power transfer device 100 further includes a circuit breaker 160. One end of the circuit breaker 160 is electrically connected to the aviation docking plug 140, and the other end of the circuit breaker 160 is used for connecting to the outlet contact 123 of the power supply transition device 100.
In a preferred embodiment, the circuit breaker 160 is a molded case circuit breaker, which refers to a plastic insulator used as the outer casing of the device for isolating the conductors from each other and grounding metal parts.
In this way, the circuit breaker 160 can set the protection fixed value (overload protection and quick-break protection) of the circuit breaker 160 according to the downstream load rated current to protect the equipment to be powered, thereby improving the reliability and stability of the power supply switching device 100.
In some embodiments, the power supply transition device 100 further includes an indicator light 150. The indicator 150 is mounted outside the device body 100 and electrically connected to the switch assembly 120 for indicating whether the power supply adapter device 100 supplies power successfully.
In a preferred embodiment, the indicator light is a 400VAC indicator light. It is understood that the indicator light 150 may be other types of indicator lights 150, and the specific type is not limited thereto.
In this way, when the power supply switching device 100 is inserted into the cabinet of the distribution board, the indicator light 150 is turned on to indicate that the power supply is normal, and otherwise, the power supply is failed.
In the present application, the wire, cable, etc. passing through the through hole 112 can also be used to electrically connect the aviation docking plug 140, the indicator light 150, the circuit breaker 160, etc. and transmit electric power.
When the power supply switching device 100 provided by the present application is used to temporarily supply power to a device to be powered, the temporary power supply process is implemented as follows: power failure isolation → electricity verification → extraction of the drawer switch of the distribution panel → insertion of the power supply switching device 100 into the cabinet of the distribution panel → temporary power supply; and (4) removing the temporary power supply flow: power failure isolation → electricity verification → extraction of the power supply switching device 100 → insertion of the drawer switch of the distribution board into the cabinet of the distribution board → recovery of the formal power supply.
In summary, the power supply switching device 100 provided by the present application can directly draw out a drawer switch of a distribution board through the switch incoming line end 121 and the switch outgoing line end 122, and then directly insert the power supply switching device 100 into a cabinet body of the distribution board, thereby realizing temporary power supply for a device to be powered, and avoiding the need of removing a wiring operation when an operator temporarily supplies power, thereby reducing the risk of the operator going wrong at intervals, effectively shortening the temporary power supply operation time, and reducing the power loss time of a load; the locking mechanism 130 can position the power supply switching device 100 when the power supply switching device 100 is inserted into the cabinet of the switchboard, so that the outlet contact 123 of the switch assembly 120 can be well contacted with the adapter of the switchboard, and the locking part 132 can prevent the switch assembly 120 from being electrically drawn out when the power supply switching device 100 is drawn out, thereby improving the reliability of the power supply switching device 100; the adaptability of the power supply adapter device 100 can be improved through the aviation docking plug 140; through the circuit breaker 160, the protection constant value of the circuit breaker 160 can be set to protect the equipment to be powered, and the reliability and stability of the power supply switching device 100 are improved.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A power supply switching device is used for a distribution board shutdown maintenance window to supply power again to a distribution electric disk load switch; the distribution board comprises a cabinet body and a plurality of drawer switches arranged in the cabinet body, the power supply switching device is configured to be capable of replacing the drawer switches, and the power supply switching device is characterized by comprising:
a device body; and
a switch assembly mounted to the apparatus body; the switch assembly comprises a switch wire inlet end and a switch wire outlet end, and the switch wire inlet end and the switch wire outlet end are electrically connected;
the switch outlet end is electrically connected to a load drawer switch outlet of the distribution board.
2. The power supply transition device of claim 1, wherein the switch assembly further comprises an outlet contact;
the outlet contact is arranged at the switch outlet end of the power supply switching device and is plugged into the adapter in the switch chamber of the switchboard in an electrical connection mode.
3. The power supply switching device of claim 2, wherein the switch assembly includes four outlet contacts that power a two-phase, three-phase, or three-phase four-wire load switch via the adapter;
the adapter is electrically connected to the two-phase power, three-phase power or three-phase four-wire system load switch.
4. The power supply switching device according to claim 1, wherein a positioning groove for the drawer switch is provided in the switch chamber on the cabinet body;
the power supply switching device also comprises a locking mechanism;
one end of the locking mechanism is mounted on the device body, and the other end of the locking mechanism is used for being connected into the positioning groove;
when the device body is inserted into the cabinet body, the locking mechanism is configured to be capable of locking the device body for locking the switch assembly.
5. The power supply changeover device according to claim 4, wherein the lock mechanism includes a mechanism body and a lock portion;
the mechanism body is arranged on the device body, the locking part is connected to the mechanism body and provided with a locking surface, and an included angle is formed between the locking surface and the device body along the insertion direction of the cabinet body;
when the locking part is in a locking state, the locking part is inserted into the positioning groove, and the locking surface abuts against the inner side groove wall of the positioning groove so as to be used for locking the device body in the inserting direction.
6. The power supply changeover device according to claim 5, wherein a width dimension of the lock portion in the insertion direction is configured to gradually decrease from a side close to the device body to a side away from the device body in a direction perpendicular to the insertion direction.
7. The power supply changeover device according to claim 4, characterized in that the power supply changeover device includes two of the lock mechanisms;
the two locking mechanisms are respectively arranged on two opposite sides of the device body, which are perpendicular to the device body, along the insertion direction of the cabinet body.
8. The power supply transition device of claim 2, further comprising an airline docking plug;
and the two opposite ends of the aviation butt plug are respectively and electrically connected with the switch incoming line end and the external power supply.
9. The power supply transition device according to claim 8, further comprising a circuit breaker;
one end of the breaker is electrically connected with the aviation butt plug, and the other end of the breaker is used for being connected with the outgoing line contact.
10. The power supply switching device according to any one of claims 1 to 7, further comprising an indicator light;
the indicating lamp is installed on the outer side of the device body and electrically connected to the switch assembly and used for indicating whether the power supply switching device supplies power successfully or not.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221750971.4U CN218216306U (en) | 2022-07-08 | 2022-07-08 | Power supply switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221750971.4U CN218216306U (en) | 2022-07-08 | 2022-07-08 | Power supply switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218216306U true CN218216306U (en) | 2023-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221750971.4U Active CN218216306U (en) | 2022-07-08 | 2022-07-08 | Power supply switching device |
Country Status (1)
| Country | Link |
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| CN (1) | CN218216306U (en) |
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- 2022-07-08 CN CN202221750971.4U patent/CN218216306U/en active Active
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