Modularized terminal power distribution cabinet

Abstract

The utility model relates to the technical field of rail transit power distribution, and discloses a modularized terminal power distribution cabinet, when a cooling fan rises to a position above a ventilation opening along with a cover plate, a tangential air outlet is in an exposed state; on the contrary, when the cover plate descends to cover the ventilation opening, the cooling fan is completely contained in the inner cavity of the cable channel side cabinet, and according to the modularized terminal power distribution cabinet, after the cover plate ascends, the cooling fan can synchronously ascend to the position above the ventilation opening, so that the tangential air outlet is exposed. At the moment, the heat dissipation fan is started to absorb hot air in the cable channel side cabinet through the axial air suction opening and discharge the hot air through the tangential air outlet, so that the temperature of the cable in the cabinet body when the cable is electrified is reduced, and the equipment operation is more stable and safer. When the cooling fan is shut down, the cover plate descends to cover the ventilation opening, so that the cooling fan is completely accommodated in the inner cavity of the cable channel side cabinet, and the effects of preventing dust and protecting the cooling fan are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit power distribution, in particular to a modular terminal power distribution cabinet. Background Art

[0002] The design of the terminal power distribution cabinet is an important link in the rail transit project. Due to the different load conditions of each station, the design schemes of the power distribution cabinets in different stations are also different. With the progress of the project, the modification and adjustment of the power distribution cabinet design scheme are also common. The customized design mode leads to the inability to improve the production efficiency and progress of the power distribution cabinet, and the product quality and reliability cannot be effectively guaranteed. To solve the above problems, the invention patent with the publication number of CN112582933A discloses an intelligent modular terminal power distribution system, which includes a plurality of power distribution cabinets arranged neatly in combination. The top or bottom of each power distribution cabinet at the end of the arrangement is connected to the external cable tray through a cable channel. Each power distribution cabinet includes a cable inlet channel, a monitoring unit, an inlet unit, a feeder unit, and an outlet cable channel. The inlet unit and the feeder unit have multiple specification model frames, and the multiple specification model frames are connected to each other by combined plugging and unplugging, achieving the effect of enabling the equipment to be produced standardized, adapting to the design changes in the later stage of the project, improving the production efficiency, and shortening the construction period.

[0003] In the above intelligent modular terminal power distribution system, a separate cable channel side cabinet is arranged on the outermost side of the power distribution cabinet. The inlets and outlets of all the power distribution cabinets arranged in a "one" shape are finally converged in the cable channel side cabinet, so that the cable layout of the inlets and outlets of each power distribution cabinet is more tidy and beautiful. However, the cable channel side cabinet is relatively closed. If the cable generates a large amount of heat when energized, it is easy to cause the phenomenon of insulation thermal breakdown, resulting in the occurrence of phase-to-phase short circuit tripping of the cable, and may even cause a fire in severe cases. Therefore, it still needs to be improved. Summary of the Utility Model

[0004] Aiming at the shortcomings of the prior art, the utility model provides a modular terminal power distribution cabinet. The centrifugal cooling fans after rising can suck the hot air in the cable channel side cabinet to reduce the temperature of the internal cable when energized, thereby reducing the equipment failure rate and the fire incidence rate.

[0005] To solve the above technical problems, the utility model is solved by the following technical solutions:

[0006] A modular terminal power distribution cabinet includes a plurality of power distribution cabinet bodies arranged in combination. A cable channel side cabinet is arranged on one side of the power distribution cabinet body. A ventilation opening is arranged at the top of the cable channel side cabinet. An elevating cover plate is arranged above the ventilation opening. Two centrifugal cooling fans are symmetrically arranged on the covering surface of the cover plate. The axial air suction openings of the cooling fans face the inner cavity of the cable channel side cabinet. The tangential air outlet openings of the two cooling fans are arranged in opposite directions in the horizontal direction;

[0007] When the cooling fan rises with the cover plate above the ventilation opening, the tangential air outlet is in an exposed state; conversely, when the cover plate descends to cover the ventilation opening, the cooling fan is completely received in the inner cavity of the cable channel side cabinet.

[0008] With the above solution, after the cover plate is raised, the cooling fan can synchronously rise above the ventilation opening to expose the tangential air outlet. At this time, the cooling fan is started to suck the hot air in the cable channel side cabinet through the axial air inlet and discharge it through the tangential air outlet, thereby reducing the temperature of the cables in the cabinet when energized and making the equipment operate more stably and safely. After the cooling fan stops running, the cover plate descends to cover the ventilation opening, so that the cooling fan is completely received in the inner cavity of the cable channel side cabinet, thus playing a role in dust prevention and protecting the cooling fan.

[0009] Preferably, a ring of baffle plates is provided along the position close to the edge of the cover surface of the cover plate, and both cooling fans are located in the space formed by the surrounding of the baffle plates, and the tangential air outlet penetrates through the plate surface of the baffle plates.

[0010] With the above solution, after the cooling fan rises with the cover plate, the baffle plates can reduce the probability of external dust entering the ventilation opening and the inner cavity of the cable channel side cabinet, making the inside of the cable channel side cabinet cleaner.

[0011] Preferably, a wind guiding groove communicating with the tangential air outlet is opened on the plate surface of the baffle plate corresponding to the tangential air outlet and away from the cooling fan.

[0012] With the above solution, the wind guiding groove opened on the baffle plate can not only keep the exhaust direction of the tangential air outlet in a horizontal state, but also play a role in expanding the air flow, so as to broaden the exhaust channel of the tangential air outlet, thereby improving the heat dissipation performance of the cooling fan.

[0013] Preferably, a filter screen assembly covers the opening of the wind guiding groove.

[0014] With the above solution, the filter screen assembly can reduce the probability of external dust entering the wind guiding groove and the tangential air outlet, avoid excessive dust accumulation in the wind guiding groove and the tangential air outlet, and save the trouble of frequent cleaning.

[0015] Preferably, the filter screen assembly includes a filter screen and a rigid edge provided on the outer edge of the filter screen, and the rigid edge is fixed to the opening of the wind guiding groove by screws.

[0016] With the above solution, it can not only realize the detachable connection between the filter screen assembly and the wind guiding groove, facilitate the user to clean or replace the filter screen assembly, but also ensure the stability of the filter screen assembly after installation.

[0017] Preferably, cylinders are provided on both opposite side walls in the cable channel side cabinet, and the push rods of the cylinders are vertically arranged and fixed to the cover surface of the cover plate.

[0018] With the above solution, the cylinder has a simple structure, is easy to install, and has a low cost. It can stably and quickly drive the cover plate to lift, ensuring the stability and efficiency of the lifting of the cooling fan.

[0019] Preferably, guide rods are vertically arranged on both sides of the cover plate, and guide blocks are arranged on the outer side walls of the cable channel side cabinet corresponding to the two guide rods. A guide hole is penetrated through the guide block for the corresponding guide rod to slide through.

[0020] With the above solution, the sliding fit of the guide rod in the guide hole can further improve the stability and smoothness of the lifting of the cover plate.

[0021] Preferably, a limiting member for preventing the guide rod from disengaging from the guide hole is arranged at one end of the guide rod away from the cover plate.

[0022] With the above solution, the limiting member can prevent the upward travel of the cover plate from exceeding the controllable range, which is more user-friendly.

[0023] Preferably, a start switch and a stop switch are arranged on the cable channel side cabinet. The start switch and the stop switch are commonly coupled to a control module. The cylinder and the cooling fan are both coupled to and controlled by the control module; when the start switch responds to an external trigger, the control module controls the push rod of the cylinder to extend upward to drive the cover plate and the cooling fan to rise above the ventilation opening, so that the tangential air outlet is exposed; meanwhile, the control module controls the cooling fan to operate to extract the air in the cable channel side cabinet through the axial air inlet;

[0024] When the stop switch responds to an external trigger, the control module controls the cooling fan to stop running, and at the same time controls the push rod of the cylinder to contract downward to drive the cover plate to descend to the state of covering the ventilation opening, so that the cooling fan is completely received in the inner cavity of the cable channel side cabinet.

[0025] With the above solution, by triggering the start switch and the stop switch, the lifting of the cover plate and the start and stop of the cooling fan can be effectively controlled, further improving the operation efficiency and convenience.

[0026] Due to the adoption of the above technical solution, the present utility model has remarkable technical effects: when the cover plate rises, the cooling fan can synchronously rise above the ventilation opening to expose the tangential air outlet. At this time, the cooling fan is started to suck the hot air in the cable channel side cabinet through the axial air inlet and discharge it through the tangential air outlet, thereby reducing the temperature of the cables in the cabinet when energized, making the equipment operate more stably and safely. When the cooling fan stops running, the cover plate descends to the state of covering the ventilation opening, so that the cooling fan is completely received in the inner cavity of the cable channel side cabinet, thereby playing a role in dust prevention and protecting the cooling fan. Description of the Drawings

[0027] Figure 1Schematic diagram of the structure of this embodiment;

[0028] Figure 2 Schematic diagram of the structure of the cable channel side cabinet in this embodiment after the cover plate is raised;

[0029] Figure 3 is Figure 2 Enlarged schematic diagram of part A shown;

[0030] Figure 4 Schematic diagram of the structure of the cable channel side cabinet in this embodiment after the cover plate is closed;

[0031] Figure 5 Exploded view of this embodiment;

[0032] Figure 6 System architecture diagram of this embodiment.

[0033] The names of the parts referred to by each digital label in the above drawings are as follows: 1, power distribution cabinet body; 2, cable channel side cabinet; 3, ventilation opening; 4, cover plate; 5, heat dissipation fan; 6, axial air suction port; 7, tangential air outlet; 8, baffle plate; 9, air guide groove; 10, filter assembly; 11, filter screen; 12, rigid edge; 13, screw; 14, cylinder; 15, push rod; 16, guide rod; 17, guide block; 18, guide hole; 19, limiting part; 20, start switch; 21, stop switch; 22, control module; 23, mounting plate. Specific implementation manners

[0034] The present utility model will be further described in detail below in conjunction with the drawings and embodiments.

[0035] As Figures 1 to 5 shown, a modular terminal power distribution cabinet disclosed in this embodiment includes a plurality of power distribution cabinet bodies 1 arranged in combination. A cable channel side cabinet 2 is provided on one side of the power distribution cabinet body 1. A square ventilation opening 3 is provided at the top of the cable channel side cabinet 2. Above the ventilation opening 3, a square liftable cover plate 4 is provided. Two centrifugal heat dissipation fans 5 are symmetrically arranged on the covering surface of the cover plate 4. The axial air suction ports 6 of the heat dissipation fans 5 face the inner cavity of the cable channel side cabinet 2. The tangential air outlets 7 of the two heat dissipation fans 5 are arranged in opposite directions in the horizontal direction. In this embodiment, when the heat dissipation fan 5 rises above the ventilation opening 3 with the cover plate 4, the tangential air outlet 7 is in an exposed state, so that the heat dissipation fan 5 can exhaust air smoothly. On the contrary, when the cover plate 4 descends to the state of covering the ventilation opening 3, the heat dissipation fan 5 is completely received in the inner cavity of the cable channel side cabinet 2 to play a role in dust prevention and protection.

[0036] As Figure 5As shown, in order to improve the dust-proof performance after the cover plate 4 is lifted, a circle of baffle plates 8 is provided around the covering surface of the cover plate 4 along the position close to the edge. Both heat dissipation fans 5 are located in the square space formed by the surrounding of the baffle plates 8, and the tangential air outlets 7 penetrate through the plate surface of the baffle plates 8 to prevent the baffle plates 8 from blocking the tangential air outlets 7.

[0037] As Figure 5 shown, in order to guide the exhaust direction of the tangential air outlets 7 and improve the heat dissipation performance of the heat dissipation fans 5, a square air guide groove 9 communicating with the tangential air outlets 7 is opened on the plate surface of the baffle plates 8 corresponding to the tangential air outlets 7 and away from the heat dissipation fans 5. A filter component 10 is covered on the opening of the air guide groove 9. Specifically, the filter component 10 includes a filter screen 11 and a rigid edge 12 arranged on the outer edge of the filter screen 11. The rigid edge 12 is fixed to the opening of the air guide groove 9 by a plurality of screws 13.

[0038] As Figure 5 shown, in order to improve the stability and efficiency of the lifting of the cover plate 4, two opposite side walls in the cable channel side cabinet 2 are both provided with cylinders 14. Both cylinders 14 are located in the space formed by the surrounding of the baffle plates 8. The push rod 15 of the cylinder 14 is vertically arranged and fixed to the covering surface of the cover plate 4. In this embodiment, the bottom of the cylinder 14 is fixed with a mounting plate 23, and the side of the mounting plate 23 is fixed to the inner side wall of the cable channel side cabinet 2.

[0039] As Figure 3 shown, in order to improve the accuracy and smoothness of the lifting of the cover plate 4, guide rods 16 are vertically arranged on both sides of the cover plate 4. Guide blocks 17 are arranged on the outer side walls of the cable channel side cabinet 2 corresponding to the two guide rods 16. Guide holes 18 for the corresponding guide rods 16 to slide through are penetrated on the guide blocks 17. A limiting member 19 for preventing the guide rods 16 from disengaging from the guide holes 18 is arranged at one end of the guide rods 16 away from the cover plate 4 to limit the maximum rising stroke of the cover plate 4.

[0040] As Figure 2 and Figure 6 shown, in order to realize the electrical control of the cylinders 14 and the heat dissipation fans 5, a push-button start switch 20 and a push-button stop switch 21 are arranged on the cable channel side cabinet 2. The start switch 20 and the stop switch 21 are commonly coupled to a control module 22. The control module 22 is a PLC or an equivalent analog circuit. Both the cylinders 14 and the heat dissipation fans 5 are coupled to and controlled by the control module 22.

[0041] The specific usage process is as follows:

[0042] When the temperature inside the cable channel side cabinet 2 is too high, to avoid equipment failures or fires, press the start switch 20. The control module 22 controls the push rod 15 of the cylinder 14 to extend upward to drive the cover plate 4 and the cooling fan 5 to rise above the ventilation opening 3, so that the tangential air outlet 7, the air guide groove 9 on the tangential air outlet 7, and the filter assembly 10 on the air guide groove 9 are in an exposed state. At the same time, the control module 22 controls the cooling fan 5 to operate, so as to extract the hot air inside the cable channel side cabinet 2 through the axial air inlet 6 and discharge the hot air through the tangential air outlet 7, thereby achieving the purpose of heat dissipation.

[0043] When the temperature inside the cable channel side cabinet 2 is not high, to save electrical energy and reduce the probability of dust entering through the ventilation opening 3, press the stop switch 21. The control module 22 controls the cooling fan 5 to stop running, and at the same time controls the push rod 15 of the cylinder 14 to contract downward to drive the cover plate 4 to descend to a state where it covers the ventilation opening 3, so that the cooling fan 5 is completely received in the inner cavity of the cable channel side cabinet 2.

[0044] The above control process can be realized by means of the built-in program of the PLC or an equivalent analog circuit, which belongs to the common knowledge in the field and will not be elaborated here.

Claims

1. A modular terminal distribution cabinet, comprising a plurality of distribution cabinets (1) arranged in combination, a cable channel side cabinet (2) being arranged on one side of the distribution cabinet (1), characterized in that: A vent (3) is provided on the top of the cable channel side cabinet (2), a lifting cover plate (4) is provided above the vent (3), two centrifugal cooling fans (5) are symmetrically provided on the cover surface of the cover plate (4), the axial air intake (6) of the cooling fan (5) faces the inner cavity of the cable channel side cabinet (2), and the tangential air outlets (7) of the two cooling fans (5) are arranged opposite to each other in the horizontal direction; When the cooling fan (5) rises with the cover plate (4) to above the ventilation opening (3), the tangential air outlet (7) is exposed; conversely, when the cover plate (4) descends to cover the ventilation opening (3), the cooling fan (5) is completely stored in the inner cavity of the cable channel side cabinet (2).

2. The modular terminal distribution cabinet according to claim 1, characterized in that: A circle of baffle plates (8) are arranged around the cover surface of the cover plate (4) along a position close to the edge, and the two cooling fans (5) are both located in a space formed by the baffle plates (8), and the tangential air outlets (7) penetrate the plate surface of the baffle plates (8).

3. The modular terminal distribution cabinet according to claim 2, characterized in that: The baffle plate (8) corresponds to the portion of the tangential air outlet (7) and is provided with an air guide groove (9) connected to the tangential air outlet (7) on the plate surface away from the heat dissipation fan (5).

4. The modular terminal distribution cabinet according to claim 3 is characterized in that: The opening of the air guide groove (9) is covered with a filter assembly (10).

5. The modular terminal distribution cabinet according to claim 4, characterized in that: The filter assembly (10) comprises a filter (11) and a hard edging (12) arranged on the outer edge of the filter (11); the hard edging (12) is fixed to the opening of the air guide groove (9) by means of screws (13).

6. The modular terminal distribution cabinet according to any one of claims 1 to 5, characterized in that: Two opposite side walls in the cable channel side cabinet (2) are both provided with a cylinder (14), and a push rod (15) of the cylinder (14) is vertically arranged and fixed to the covering surface of the cover plate (4).

7. The modular terminal distribution cabinet according to any one of claims 1 to 5, characterized in that: Guide rods (16) are vertically arranged on both sides of the cover plate (4), and guide blocks (17) are arranged on the outer side walls of the cable channel side cabinet (2) corresponding to the two guide rods (16), and guide holes (18) are penetrated through the guide blocks (17) for the corresponding guide rods (16) to slide through.

8. The modular terminal distribution cabinet according to claim 7, characterized in that: A stopper (19) is provided at one end of the guide rod (16) away from the cover plate (4) to prevent the guide rod (16) from escaping from the guide hole (18).

9. The modular terminal distribution cabinet according to claim 6, characterized in that: A start switch (20) and a stop switch (21) are provided on the cable channel side cabinet (2). The start switch (20) and the stop switch (21) are coupled to a control module (22). The cylinder (14) and the cooling fan (5) are coupled to and controlled by the control module (22). When the start switch (20) responds to an external trigger, the control module (22) controls the push rod (15) of the cylinder (14) to extend upward to drive the cover plate (4) and the cooling fan (5) to rise above the ventilation port (3), thereby exposing the tangential air outlet (7). At the same time, the control module (22) controls the cooling fan (5) to operate so as to extract air in the cable channel side cabinet (2) through the axial air intake port (6). When the stop switch (21) responds to an external trigger, the control module (22) controls the cooling fan (5) to stop, and at the same time controls the push rod (15) of the cylinder (14) to retract downward to drive the cover plate (4) to descend to a state of covering the vent (3), so that the cooling fan (5) is completely stored in the inner cavity of the cable channel side cabinet (2).

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