CN219874622U - Screen cabinet and control loop for replacing dual-power switching device - Google Patents
Screen cabinet and control loop for replacing dual-power switching device Download PDFInfo
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- CN219874622U CN219874622U CN202223207706.4U CN202223207706U CN219874622U CN 219874622 U CN219874622 U CN 219874622U CN 202223207706 U CN202223207706 U CN 202223207706U CN 219874622 U CN219874622 U CN 219874622U
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
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- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000000007 visual effect Effects 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 description 6
- 238000007689 inspection Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model discloses a screen cabinet and a control loop thereof for replacing a dual-power switching device, and relates to the technical field of screen cabinets. According to the utility model, when the components are in failure or need to be overhauled, the component mounting rack connected with the component mounting rack can be pushed out of the screen cabinet main body through the mounting rack ejection mechanism, so that a worker can conveniently and rapidly overhauls the components, two paths of power supply switching loops constructed by the circuit breaker and the contactor are utilized, one path of power supply is powered off, the contactor is powered off after the power supply is powered off, the other path of power supply is automatically attracted, the other path of power supply is used for the switching mode loop, the loop is simple and visual, the overhauling and checking process is rapid and convenient, only the failed component is replaced, and the overall price is relatively low.
Description
Technical Field
The utility model relates to the technical field of screen cabinets, in particular to a screen cabinet and a control loop of the screen cabinet for replacing a dual-power switching device.
Background
The screen cabinet is an important component part of the transformer substation, is an important carrier for the design and operation and maintenance of the transformer substation, and is generally formed by combining the cabinet, relay protection equipment, a safety automatic device, matched equipment and auxiliary components which are arranged on the cabinet. The terminal connection among all the devices in the screen cabinet is realized by using the cable, is a necessary carrier for realizing power flow and information flow, and is a necessary element for realizing the relay protection function of the power system. Inside the cabinet, a large number of components such as a power supply, a circuit breaker, a contactor and the like are densely arranged on the carrier, and various components in the circuit generally work for a long time and then heat is generated.
The existing screen cabinet generally cannot be opened in time to overhaul and replace components when the components are in failure or burnt, and overhaulers need to drill into the cabinet or dismantle sheet metal parts in the cabinet firstly, so that overhaul cost and overhaul time can be correspondingly increased.
The important load power supply of the conventional 380V power distribution system generally adopts a switching mode of two-way power supply, one power supply is automatically switched to the other power supply after losing by using a double-power supply switching device, the double-power supply switching switch is integrally sealed in a plastic shell, problems are not easy to find during daily inspection and maintenance, and the internal fault post-treatment is complex and needs to be integrally replaced.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.
The present utility model has been made in view of the above and/or problems occurring in existing screen cabinets.
Therefore, one of the purposes of the utility model is to provide a screen cabinet, which can solve the problem that the cabinet door can not be opened in time to overhaul and replace components when the components are in failure or burnt.
In order to solve the technical problems, the utility model provides the following technical scheme: a screen cabinet, which comprises a screen cabinet body,
the component mounting mechanism comprises a screen cabinet main body and a component mounting rack which is arranged in the screen cabinet main body in a sliding manner, wherein a plurality of layers of carrier plates are sequentially and fixedly arranged in the component mounting rack;
the mounting frame ejection mechanism is connected with the component mounting frame and comprises a bottom frame and a telescopic supporting rod arranged on the bottom frame, a top plate is fixedly arranged at the top of the telescopic supporting rod, and the top plate is connected with the component mounting frame through bolt fastening.
Based on the technical characteristics: according to the utility model, when the components are in fault or need to be overhauled, the component mounting frame connected with the component mounting frame can be pushed out of the screen cabinet main body through the mounting frame ejection mechanism, so that a worker can conveniently and rapidly overhauls and replace local components of a power supply, a circuit breaker, a contactor and the like which are in fault or burn-out on the component mounting frame, and the whole replacement is not needed.
As a preferred embodiment of the screen cabinet according to the utility model, the following applies: limiting plates are fixedly arranged at two ends of the underframe, a positive and negative threaded screw rod is connected to the inner side of the limiting plates in a rotating mode, and one end of the positive and negative threaded screw rod penetrates through the limiting plates and is fixedly connected with a first gear.
Based on the technical characteristics: the limiting plate is used for limiting the position of the top plate, and after the top plate contacts the limiting plate, the movement is stopped.
As a preferred embodiment of the screen cabinet according to the utility model, the following applies: the outside of positive and negative screw thread lead screw is connected with two mutually parallel swivel nuts through the screw thread slip, the one end of swivel nut articulates there is the connecting rod, and the back of roof is provided with the connecting seat, the connecting seat articulates with the connecting rod.
Based on the technical characteristics: when the front and back threaded screw rods rotate, the two groups of threaded sleeves can slide relatively on the front and back threaded screw rods, or approach or depart from each other simultaneously, and the connecting rod is utilized to drive the top plate to move back and forth.
As a preferred embodiment of the screen cabinet according to the utility model, the following applies: the surface threads of the front and back threaded screw rod are divided into two parts, the spiral directions are opposite, and the two threaded sleeves are respectively positioned at the two ends of the front and back threaded screw rod, and the movement directions are opposite.
Based on the technical characteristics: when the front and back threaded screw rod rotates, the two groups of threaded sleeves can move reversely at the front and back ends of the front and back threaded screw rod due to the opposite spiral directions of the two parts.
As a preferred embodiment of the screen cabinet according to the utility model, the following applies: the screen cabinet is characterized in that a gear motor is mounted on the outer wall of one side of the screen cabinet body, a long rotating shaft is fixedly connected to the output shaft end of the gear motor, one end of the long rotating shaft stretches into the screen cabinet body and is connected with a second gear, and the second gear is meshed with the first gear.
Based on the technical characteristics: the speed reducing motor is a positive and negative motor, can drive the long rotating shaft to rotate after being started, and can drive the positive and negative threaded screw rod to rotate in the positive direction or the reverse direction due to the fact that the second gear is meshed with the first gear.
As a preferred embodiment of the screen cabinet according to the utility model, the following applies: the both sides of components and parts mounting bracket all fixedly connected with is handheld to be drawn, handheld handle adopts insulating silica gel stick.
Based on the technical characteristics: the staff can hold the hand-held pull handle during maintenance, and avoid electric shock danger as much as possible.
As a preferred embodiment of the screen cabinet according to the utility model, the following applies: and a plurality of groups of radiating fins are arranged around the inner wall of the component mounting frame, and the radiating fins are also uniformly distributed on the carrier plate.
Based on the technical characteristics: the radiating fins can be used for radiating the components on the component mounting frame after the components are mounted, and the heat generated during the operation of the components can be partially and rapidly absorbed by the radiating fins, so that the situation that the components are burnt or fire disaster is caused due to excessive heat gathered in the screen cabinet main body is avoided as much as possible.
As a preferred embodiment of the screen cabinet according to the utility model, the following applies: the sealing door is hinged to one side edge of the screen cabinet main body, an observation porthole is arranged on the sealing door, and a manual motor switch is further arranged on the inner wall of the sealing door.
Based on the technical characteristics: when the worker is in daily inspection, the worker can visually and clearly see the running conditions of components such as the vacuum circuit breaker and the contactor in the main body of the screen cabinet through the observation porthole, and the manual motor switch can be used for controlling the on-off state or the forward and reverse rotation mode of the gear motor.
In summary, the present utility model includes at least one of the following beneficial effects: when components and parts break down or need to be overhauled, the screw sleeve is driven to slide on the screw rod with positive and negative threads through rotating the screw rod with positive and negative threads, the connecting rod is driven by the screw sleeve which is close to each other to push the top plate forward, and the component mounting frame connected with the top plate is pushed out of the main body of the screen cabinet through the top plate, so that the components and parts such as a power supply, a circuit breaker, a contactor and the like which break down or burn down on the component mounting frame can be overhauled quickly and the local components can be replaced conveniently by workers.
The utility model further aims to provide a control loop for replacing the dual-power switching device, which not only can solve the problem that a cabinet door cannot be opened in time to overhaul and replace components when the components are in failure or burnt, but also can solve the problem that the internal failure post-treatment is complex and the whole replacement is required when the dual-power switching is performed.
In order to solve the technical problems, the utility model provides the following technical scheme: a control loop for replacing a dual power switching device comprises the screen cabinet; the first alternating current power supply, the second alternating current power supply and the load bus are connected with the load bus, a first main loop air switch and a first main loop contactor are arranged between the first alternating current power supply and the load bus, a second main loop air switch and a second main loop contactor are arranged between the second alternating current power supply and the load bus, the first main loop contactor comprises a first coil and a first auxiliary contact, the second main loop contactor comprises a second coil and a second auxiliary contact, the first coil of the first main loop contactor is connected with the second auxiliary contact of the second main loop contactor, and the second coil of the second main loop contactor is connected with the first auxiliary contact of the first main loop contactor.
Based on the technical characteristics: the technology aims at the two-path power supply switching loop built by the circuit breaker and the contactor, the operation conditions of the vacuum circuit breaker and the contactor are intuitively and clearly seen through daily inspection, only the fault is replaced after the circuit breaker or the contactor fails, and the fault processing is convenient and simple.
As a preferred embodiment of the control loop according to the utility model, which replaces the dual-power switching device, the control loop comprises: a first control loop protector is arranged between a first coil of the first main loop contactor and a first alternating current power supply, and a second control loop protector is arranged between a second coil of the second main loop contactor and a second alternating current power supply.
Based on the technical characteristics: two circuit breakers and two contactors are installed in the screen cabinet, the control loop is connected into an interlocking loop, and after one contactor loses electricity, the other contactor is automatically put into suction, so that the power supply of a load is ensured not to lose electricity.
In summary, the present utility model includes at least one of the following beneficial effects: by utilizing the circuit breaker and the contactor, after one power supply is in power failure, the other contactor is automatically attracted, the switching mode loop is simple and direct, the maintenance is convenient and quick, the circuit breaker and the contactor are arranged in the screen cabinet, the control loop is connected into an interlocking loop, one contactor is in power failure, the other contactor is automatically attracted, and the load power supply is not lost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a view showing an external appearance of a component mounting mechanism according to the present utility model;
FIG. 2 is a schematic top view of the present utility model;
FIG. 3 is a side view of the internal cross-sectional structure of the present utility model;
FIG. 4 is a specific block diagram of the mounting bracket ejection mechanism of the present utility model;
fig. 5 is a schematic diagram of a control loop of the present utility model.
Detailed Description
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1, 3 and 4, a first embodiment of the present utility model provides a screen cabinet, which can solve the problem that a cabinet door cannot be opened in time to repair and replace components when the components are failed or burned, comprising,
the component mounting mechanism 100 comprises a screen cabinet main body 101 and a component mounting frame 102 which is arranged in the screen cabinet main body 101 in a sliding manner, wherein a plurality of layers of carrier plates 103 are sequentially and fixedly arranged in the component mounting frame 102;
the mounting frame ejection mechanism 200 is connected with the component mounting frame 102 and comprises a bottom frame 201 and a telescopic supporting rod 202 arranged on the bottom frame 201, a top plate 203 is fixedly arranged at the top of the telescopic supporting rod 202, and the top plate 203 is connected with the component mounting frame 102 through bolt fastening.
Specifically, limiting plates 205 are fixedly arranged at two ends of the underframe 201, a forward and reverse threaded screw rod 206 is rotatably connected to the inner side of the limiting plates 205, one end of the forward and reverse threaded screw rod 206 penetrates through the limiting plates 205 and is fixedly connected with a first gear 207, the limiting plates 205 are used for limiting the position of the top plate 203, and after the top plate 203 contacts the limiting plates 205, movement is stopped.
Further, two parallel threaded sleeves 208 are connected to the outer side of the front and back threaded screw rod 206 through thread sliding, a connecting rod 209 is hinged to one end of each threaded sleeve 208, a connecting seat 204 is arranged on the back surface of the top plate 203, the connecting seat 204 is hinged to the connecting rod 209, when the front and back threaded screw rod 206 rotates, two groups of threaded sleeves 208 can slide relatively on the front and back threaded screw rod 206, or approach or separate simultaneously, and the top plate 203 is driven to move back and forth by the connecting rod 209.
The surface threads of the front and back threaded screw rod 206 are divided into two parts, the screw directions are opposite, two threaded sleeves 208 are respectively positioned at two ends of the front and back threaded screw rod 206, and the movement directions are opposite, so that when the front and back threaded screw rod 206 rotates, the two groups of threaded sleeves 208 can move reversely at the front and back ends of the front and back threaded screw rod 206 due to the opposite screw directions of the two parts.
Preferably, a gear motor 211 is installed on the outer wall of one side of the screen cabinet main body 101, an output shaft end of the gear motor 211 is fixedly connected with a long rotating shaft 210, one end of the long rotating shaft 210 extends into the screen cabinet main body 101 and is connected with a second gear 212, the second gear 212 is meshed with the first gear 207, the gear motor 211 is a positive and negative motor, the long rotating shaft 210 can be driven to rotate after being started, and the second gear 212 and the first gear 207 can be meshed to drive the positive and negative threaded screw rod 206 to rotate positively or reversely.
It should be noted that, the two sides of the component mounting frame 102 are fixedly connected with the handheld pulling handles 104, the handheld pulling handles 104 are made of insulating silica gel rods, and workers can hold the handheld pulling handles 104 during maintenance, and electric shock risks are avoided as much as possible.
In summary, when the components are in fault or need to be overhauled, the screw sleeve 208 can be driven to slide on the screw rod 206 through rotating the screw rod 206 with the positive and negative threads, the connecting rod 209 is driven to push the top plate 203 forward by utilizing the screw sleeve 208 which is close to each other, and the component mounting frame 102 connected with the screw sleeve is pushed out of the screen cabinet main body 101 through the top plate 203, so that the components such as a power supply, a circuit breaker, a contactor and the like which are in fault or burnt on the component mounting frame 102 can be overhauled quickly and replaced by local elements conveniently, and the workers do not need to drill into the screen cabinet main body 101 or disassemble sheet metal parts in the screen cabinet main body 101, so that the overhauling cost is saved, and the schedule of overhauling is prevented from being delayed or the electric shock danger caused by narrow space or excessive wires in the cabinet.
Example 2
Referring to fig. 1-2, in a second embodiment of the present utility model, unlike the previous embodiment, the present embodiment provides a heat dissipation fin 105 of a screen cabinet, which solves the problem of heat dissipation in the cabinet, and includes a plurality of groups of heat dissipation fins 105 installed around the inner wall of a component mounting frame 102, and the heat dissipation fins 105 are also uniformly distributed on a carrier plate 103.
Specifically, a sealing door 106 is hinged at one side edge of the screen cabinet main body 101, an observation porthole 107 is arranged on the sealing door 106, a manual motor switch 108 is further installed on the inner wall of the sealing door 106, a worker can intuitively and clearly see the running conditions of components such as a vacuum circuit breaker and a contactor in the screen cabinet main body 101 through the observation porthole 107 during daily inspection, and the manual motor switch 108 can be used for controlling the on-off state or the forward and reverse rotation mode of the gear motor 211.
In summary, the heat dissipation fins 105 can be used for dissipating heat of components on the component mounting frame 102 after being mounted, and heat generated during operation of the components can be partially and rapidly absorbed by the heat dissipation fins 105, so that excessive heat accumulated in the screen cabinet main body 101 is prevented from burning or causing fire and the like.
Example 3
Referring to fig. 5, in a third embodiment of the present utility model, unlike the previous embodiment, the present utility model provides a control loop for replacing a dual power switching device, which solves the problem that the internal fault post-treatment is complex and needs to be replaced entirely during the dual power switching, and includes a first ac power source, a second ac power source and a load bus, wherein the first ac power source and the second ac power source are both connected with the load bus, a first main loop air switch and a first main loop contactor are disposed between the first ac power source and the load bus, a second main loop air switch and a second main loop contactor are disposed between the second ac power source and the load bus, the first main loop contactor includes a first coil and a first auxiliary contact, the second main loop contactor includes a second coil and a second auxiliary contact of the second main loop contactor, the second coil of the second main loop contactor is connected with the first auxiliary contact of the first main loop contactor, a second coil of the second main loop contactor is disposed between the first coil of the first main loop contactor and the first main loop contactor, and a second main loop safety circuit is disposed between the first coil of the first main loop contactor and the second main loop contactor.
When the power supply is used, two paths of 380V power supplies normally supply power during normal operation, the air switches 1QF1 and 1QF2 are closed, the 1KM1 coil is electrified, the 1KM1 contactor is attracted, and the 1 st path of power supply supplies power to a load. When the 1-path power failure disappears, the 1KM1 coil loses power, the 1KM3 coil is electrified when the 1KM1 auxiliary contacts 21-22 are closed, the 1KM3 contactor is attracted, the 2 nd path power supply supplies power to the load, so that uninterrupted power supply to the load can be ensured, 1F21 and 1F22 represent control loop insurance, 1KM1 and 1KM3 represent main loop contactors, 1QF1 and 1QF2 represent main loop air switches, 1L1, 1L2 and 1L3 represent load buses, 1U, 1V and 1W are 380V first path power supplies, and 2U, 2V and 2W are 380V second path power supplies.
In summary, the utility model utilizes two paths of power supply switching loops built by the circuit breaker and the contactor, one path of power supply is powered off, the contactor is powered off, the other contactor is automatically attracted at the same time, the other path of power supply supplies the switching mode loop, the maintenance and inspection process is quick and convenient, only the failed components are replaced, the whole price is relatively low, the operation condition of the vacuum circuit breaker and the contactor is intuitively and clearly seen through daily inspection aiming at the two paths of power supply switching loops built by the circuit breaker and the contactor, only the failed one is replaced after the circuit breaker or the contactor fails, the fault processing is convenient and simple, the two circuit breakers and the two contactors are installed in the screen cabinet, the control loop is connected into an interlocking loop, the other contactor is automatically switched on and attracted after the power of one contactor is lost, and the power supply of the load is ensured not to be powered off.
It is important to note that the construction and arrangement of the utility model as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present utility model. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility models. Therefore, the utility model is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Furthermore, in order to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the utility model, or those not associated with practicing the utility model).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.
Claims (10)
1. A screen cabinet, characterized in that: comprising the steps of (a) a step of,
the component mounting mechanism (100) comprises a screen cabinet main body (101) and a component mounting frame (102) which is arranged in the screen cabinet main body (101) in a sliding manner, wherein a plurality of layers of carrier plates (103) are sequentially and fixedly arranged in the component mounting frame (102);
the mounting frame ejection mechanism (200) is connected with the component mounting frame (102), and comprises a bottom frame (201) and a telescopic supporting rod (202) arranged on the bottom frame (201), wherein a top plate (203) is fixedly arranged at the top of the telescopic supporting rod (202), and the top plate (203) is connected with the component mounting frame (102) through bolt fastening.
2. A cabinet as claimed in claim 1, wherein: limiting plates (205) are fixedly arranged at two ends of the underframe (201), a positive and negative threaded screw rod (206) is rotatably connected to the inner side of the limiting plates (205), and one end of the positive and negative threaded screw rod (206) penetrates through the limiting plates (205) and is fixedly connected with a first gear (207).
3. A cabinet as claimed in claim 2, wherein: the outside of positive and negative screw lead screw (206) is connected with two mutually parallel swivel nuts (208) through the screw thread slip, one end of swivel nut (208) articulates there is connecting rod (209), and the back of roof (203) is provided with connecting seat (204), connecting seat (204) are articulated with connecting rod (209).
4. A screen cabinet as claimed in claim 2 or 3, wherein: the surface threads of the front and back threaded screw rod (206) are divided into two parts, the spiral directions are opposite, and the two threaded sleeves (208) are respectively positioned at the two ends of the front and back threaded screw rod (206) and have opposite movement directions.
5. A cabinet as claimed in claim 1, wherein: the inside of screen cabinet main part (101) has components and parts mounting bracket (102), installs gear motor (211) on the outer wall of one side, the output axle head fixedly connected with long pivot (210) of gear motor (211), the inside and being connected with second gear (212) of screen cabinet main part (101) are stretched into to the one end of long pivot (210), second gear (212) are connected with first gear (207) meshing.
6. A cabinet as claimed in claim 1, wherein: both sides of components and parts mounting bracket (102) all fixedly connected with is handheld to draw handle (104), handheld handle (104) adopt insulating silica gel stick.
7. A screen cabinet as claimed in claim 1 or 6, wherein: a plurality of groups of radiating fins (105) are arranged around the inner wall of the component mounting frame (102), and the radiating fins (105) are uniformly distributed on the carrier plate (103).
8. A cabinet as claimed in claim 1, wherein: a sealing door (106) is hinged at one side edge of the screen cabinet main body (101), an observation porthole (107) is arranged on the sealing door (106), and a manual motor switch (108) is further arranged on the inner wall of the sealing door (106).
9. A control loop for replacing a dual power switching device, characterized by: comprising a screen cabinet according to any of claims 1-8; and
the device comprises a first alternating current power supply, a second alternating current power supply and a load bus, wherein the first alternating current power supply and the second alternating current power supply are connected with the load bus, a first main loop air switch and a first main loop contactor are arranged between the first alternating current power supply and the load bus, a second main loop air switch and a second main loop contactor are arranged between the second alternating current power supply and the load bus, the first main loop contactor comprises a first coil and a first auxiliary contact, the second main loop contactor comprises a second coil and a second auxiliary contact, the first coil of the first main loop contactor is connected with the second auxiliary contact of the second main loop contactor, and the second coil of the second main loop contactor is connected with the first auxiliary contact of the first main loop contactor.
10. The control loop for replacing a dual power switching device of claim 9, wherein: a first control loop protector is arranged between a first coil of the first main loop contactor and a first alternating current power supply, and a second control loop protector is arranged between a second coil of the second main loop contactor and a second alternating current power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223207706.4U CN219874622U (en) | 2022-11-30 | 2022-11-30 | Screen cabinet and control loop for replacing dual-power switching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223207706.4U CN219874622U (en) | 2022-11-30 | 2022-11-30 | Screen cabinet and control loop for replacing dual-power switching device |
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| CN219874622U true CN219874622U (en) | 2023-10-20 |
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| CN202223207706.4U Active CN219874622U (en) | 2022-11-30 | 2022-11-30 | Screen cabinet and control loop for replacing dual-power switching device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117542678A (en) * | 2024-01-08 | 2024-02-09 | 国网河南省电力公司新乡供电公司 | Dual-power supply change-over switch device |
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2022
- 2022-11-30 CN CN202223207706.4U patent/CN219874622U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117542678A (en) * | 2024-01-08 | 2024-02-09 | 国网河南省电力公司新乡供电公司 | Dual-power supply change-over switch device |
| CN117542678B (en) * | 2024-01-08 | 2024-05-03 | 国网河南省电力公司新乡供电公司 | Dual-power supply change-over switch device |
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