CN215819048U

CN215819048U - Power supply cabinet for power supply of power unit of three-level high-voltage frequency converter

Info

Publication number: CN215819048U
Application number: CN202122328135.9U
Authority: CN
Inventors: 魏清明; 戴春锋; 魏萍
Original assignee: Changzhou Ruihu Automation Technology Co ltd
Current assignee: Changzhou Ruihu Automation Technology Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-02-11
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a power supply cabinet for power supply of a three-level high-voltage frequency converter power unit, which comprises a cabinet main body, wherein a cabinet door is arranged on the front surface of the cabinet main body, a plurality of heat dissipation holes are formed in two sides of the cabinet main body, a bottom plate is arranged at the bottom of the front surface of the cabinet main body, three supporting bottom rods are arranged at the top of the bottom plate and the back of the cabinet main body, fixing frames are arranged on two inner side walls of the cabinet main body, and a supporting frame is arranged between each fixing frame and each supporting bottom rod; the front bottom of the supporting frame is provided with a front supporting frame, the front of the front supporting frame is provided with a circuit mounting plate, the front of the circuit mounting plate is provided with components, and the back bottom of the supporting frame is provided with a back supporting frame. Has the advantages that: through the structural design of the multilayer type of the frame, the internal components are stably supported to ensure the stability of operation, and the heat dissipation efficiency of the components can be greatly improved and the stability of the components is further improved due to the benefit of the double-layer heat dissipation structure formed by the internal air flow, the heat conduction plate and the heat dissipation fan.

Description

Power supply cabinet for power supply of power unit of three-level high-voltage frequency converter

Technical Field

The utility model relates to the field of power supply and power supply of power units, in particular to a power supply cabinet for power supply of a three-level high-voltage frequency converter power unit.

Background

The high-voltage variable-frequency power supply has the characteristics of stable frequency, stable voltage, zero internal resistance, pure sine wave (no distortion) voltage waveform and the like, has obvious advantages in ship shore power utilization, and is an important direction for future development. The high-voltage variable-frequency power supply is very good voltage-stabilizing and frequency-modulating equipment, so that the high-voltage power supply has a plurality of applications, and the high-voltage power supply needs to be protected by a cabinet in daily life.

At present, the number of power units in a power cabinet for supplying power to a high-voltage frequency converter is large, and the power unit is inconvenient to install and high in cost; the power unit generates a large amount of heat, the heat dissipation effect is poor due to equipment accumulation, and the capacity of a single module is small; the power cabinet of installation power unit is bulky to the whole tightness of rack is relatively poor, and the internal plant installation is complicated, overhauls the maintenance cost height. For example, the power control cabinet disclosed in patent No. CN209747955U is provided with a forced heat dissipation cooling loop, so that heat generated by electronic components inside the control cabinet during operation can be effectively dissipated; the unique distribution of power control cabinet inner space for inside electronic component obtains reasonable installation and overall arrangement, but its inner structure majority is fixed the setting, is difficult for assembly and later maintenance.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the power supply cabinet for the power supply of the power unit of the three-level high-voltage frequency converter, which has the advantages of strong heat dissipation performance, high strength, stable structure and convenience in mounting and dismounting, and further solves the problems of poor heat dissipation performance and multiple mounting and maintenance steps of the conventional power supply and the cabinet.

(II) technical scheme

In order to realize the advantages of strong heat dispersion, high strength, stable structure and convenient assembly and disassembly, the utility model adopts the following specific technical scheme:

a power supply cabinet for power supply of a power unit of a three-level high-voltage frequency converter comprises a cabinet main body, wherein a cabinet door is arranged on the front surface of the cabinet main body, a plurality of heat dissipation holes are formed in two sides of the cabinet main body, a bottom plate is arranged at the bottom of the front surface of the cabinet main body, three supporting bottom rods are arranged at the top of the bottom plate and the back of the cabinet main body, fixing frames are arranged on two inner side walls of the cabinet main body, and a supporting frame is arranged between each fixing frame and each supporting bottom rod; the bottom of the front surface of the supporting frame is provided with a front supporting frame, the front surface of the front supporting frame is provided with a circuit mounting plate, the front surface of the circuit mounting plate is provided with components, the bottom of the back surface of the supporting frame is provided with a back supporting frame, the back surface of the back supporting frame is provided with a plurality of radiating fans, and a heat conducting plate is arranged between the front supporting frame and the back supporting frame; the top of the supporting frame is provided with a top plate, and the middle position of the top plate is provided with a locking mechanism in an inserting mode.

Further, in order to enable the power supply to achieve real-time information display and emergency stop power failure under emergency conditions, the safety of the power supply and the environment is guaranteed, an ammeter is arranged at the front top of the cabinet body, and an emergency stop button is arranged at the front top of the cabinet body and located below the ammeter.

Further, in order to make the bottom plate play the effect of ventilation and support simultaneously, support three support sill bar and guarantee braced frame's structural strength, and because the joint of spacing spout, realize braced frame's location placed in the middle, make things convenient for subsequent assembly, reduce the operation degree of difficulty when improving stability, the air vent that a plurality of equidistance were arranged and are the rectangular distribution is openly seted up to the bottom plate, the cross-section of supporting the sill bar is flat notch structure, braced frame has seted up three and has supported sill bar matched with spacing spout bottom plate.

Further, in order to make the circuit mounting panel can the joint positive carriage, realize that fixed installation between them is fixed, the top installation fixing bolt of the circuit mounting panel of degree of being convenient for, positive carriage is square frame shape structure, and positive carriage openly bottom is provided with the bearing chassis, and circuit mounting panel both sides bottom all is provided with the joint side strip with bearing chassis matched with, and the circuit mounting panel top is provided with the handle.

Further, in order to make braced frame can pass through the regulatory action of two check locks, realize at the inboard spacing fixed of fixed frame, guarantee the intensity of structure, locking mechanism is including the pivot of interlude in the positive central point of roof and putting, the pivot openly is provided with the knob, the pivot back is provided with the rotation connecting rod, rotation connecting rod both ends all are provided with the connecting rod and keep swing joint, the other end of connecting rod is provided with the check lock and keeps swing joint, roof back both sides all are provided with the spacing side ear with check lock matched with, the check lock is located braced frame's the back, braced frame openly intermediate position is seted up and is backed braced frame matched with support groove.

(III) advantageous effects

Compared with the prior art, the utility model provides the power supply cabinet for supplying power to the power unit of the three-level high-voltage frequency converter, which has the following beneficial effects:

(1) the internal components are stably supported and the stability of operation is guaranteed through the multi-layer structural design of the frame, and the heat dissipation efficiency of the components can be greatly improved and the stability of the components is further improved due to the internal air flow and the double-layer heat dissipation structure formed by the heat conduction plate and the heat dissipation fan; meanwhile, all the structures are clamped and fixed, so that the installation difficulty and the maintenance cost of the equipment can be greatly reduced, and the assembly efficiency is improved; meanwhile, the locking mechanism can limit and fix the support frame in the installation process or the debugging and running process, so that the steps and the difficulty of the installation of internal equipment are reduced.

(2) Through setting up three support sill bar and spacing spout, the degree of difficulty when can reducing the braced frame installation and guarantee braced frame's stability, through the support groove of seting up, can guarantee that fixed frame and braced frame realize closely laminating, further improve inner structure's structural strength.

Drawings

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

Fig. 1 is a schematic perspective view of a power supply cabinet for supplying power to a power unit of a three-level high-voltage inverter according to an embodiment of the utility model;

fig. 2 is a schematic diagram of an opened three-dimensional structure of a power supply cabinet for supplying power to a power unit of a three-level high-voltage inverter according to an embodiment of the utility model;

fig. 3 is a schematic structural diagram of a main body of a power cabinet for supplying power to a power unit of a three-level high-voltage inverter according to an embodiment of the present invention;

fig. 4 is a schematic front view of an internal structure of a power supply cabinet for supplying power to a power unit of a three-level high-voltage inverter according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a back side of an internal structure of a power supply cabinet for supplying power to a power unit of a three-level high-voltage inverter according to an embodiment of the utility model;

FIG. 6 is a schematic structural diagram of a locking mechanism in a power cabinet for supplying power to a power unit of a three-level high-voltage inverter according to an embodiment of the utility model;

fig. 7 is a schematic structural diagram of a circuit mounting board in a power supply cabinet for supplying power to a power unit of a three-level high-voltage inverter according to an embodiment of the utility model.

In the figure:

1. a cabinet main body; 2. a cabinet door; 3. heat dissipation holes; 4. a base plate; 5. a support bottom bar; 6. a fixing frame; 7. a support frame; 8. a positive support frame; 9. a circuit mounting board; 10. a component; 11. a back support frame; 12. a heat radiation fan; 13. a heat conducting plate; 14. a top plate; 15. a locking mechanism; 1501. a rotating shaft; 1502. a knob; 1503. a self-rotating connecting rod; 1504. a connecting rod; 1505. a locking lever; 1506. limiting side lugs; 16. an electricity meter; 17. an emergency stop button; 18. a vent hole; 19. a limiting chute; 20. supporting the underframe; 21. clamping the side strips; 22. a handle; 23. and a support groove.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the utility model, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to the embodiment of the utility model, the power supply cabinet for supplying power to the power unit of the three-level high-voltage frequency converter is provided.

Referring to the drawings and the detailed description, as shown in fig. 1-7, the power supply cabinet for power supply of the three-level high-voltage inverter power unit according to the embodiment of the utility model includes a cabinet main body 1, a cabinet door 2 is arranged on the front surface of the cabinet main body 1, a plurality of heat dissipation holes 3 are respectively arranged on two sides of the cabinet main body 1, a bottom plate 4 is arranged at the bottom of the front surface of the cabinet main body 1, three supporting bottom rods 5 are arranged at the top of the bottom plate 4 and the back of the cabinet main body 1, fixing frames 6 are arranged on two inner side walls of the cabinet main body 1, and a supporting frame 7 is arranged between the fixing frame 6 and the supporting bottom rods 5; a front supporting frame 8 is arranged at the bottom of the front surface of the supporting frame 7, a circuit mounting plate 9 is arranged at the front surface of the front supporting frame 8, a component 10 is arranged at the front surface of the circuit mounting plate 9, a back supporting frame 11 is arranged at the bottom of the back surface of the supporting frame 7, a plurality of radiating fans 12 are arranged at the back surface of the back supporting frame 11, and a heat conducting plate 13 is arranged between the front supporting frame 8 and the back supporting frame 11; the top of the supporting frame 7 is provided with a top plate 14, and a locking mechanism 15 is arranged at the middle position of the top plate 14 in an inserting manner.

By means of the technical scheme, the internal components 10 are stably supported and the stability of operation is guaranteed through the multi-layer structural design of the frame, and the heat dissipation efficiency of the components 10 can be greatly improved and the stability of the components 10 is further improved due to the internal air flow and the double-layer heat dissipation structure formed by the heat conduction plate 13 and the heat dissipation fan 12; meanwhile, all the structures are clamped and fixed, so that the installation difficulty and the maintenance cost of the equipment can be greatly reduced, and the assembly efficiency is improved; meanwhile, the locking mechanism 15 can limit and fix the supporting frame 7 in the installation process or the debugging and running process, so that the steps and difficulty of installation of internal equipment are reduced.

In an embodiment, for the cabinet body 1, the electric meter 16 is disposed at the top of the front surface of the cabinet body 1, and the emergency stop button 17 is disposed at the top of the front surface of the cabinet body 1 and below the electric meter 16, so that the power supply can display real-time information and perform emergency stop and power off in emergency, and the safety of the power supply and the environment is ensured.

In an embodiment, for above-mentioned bottom plate 4, bottom plate 4 openly has been seted up a plurality of equidistance and has been arranged the air vent 18 that is the rectangular distribution, the cross-section that supports sill bar 5 is flat notch structure, braced frame 7 bottom is seted up three and is supported sill bar 5 matched with spacing spout 19, thereby make bottom plate 4 can play the effect of ventilation and support simultaneously, support three structural strength who supports sill bar 5 and guarantee braced frame 7, and because spacing spout 19's joint, realize braced frame 7's location placed in the middle, make things convenient for subsequent assembly, reduce the operation degree of difficulty when improving stability.

In an embodiment, for the above-mentioned positive support frame 8, the supporting bottom frame 20 is arranged at the bottom of the front surface of the positive support frame 8, the clamping side strips 21 matched with the supporting bottom frame 20 are arranged at the bottoms of the two sides of the circuit mounting plate 9, and the handle 22 is arranged at the top of the circuit mounting plate 9, so that the circuit mounting plate 9 can be clamped on the front surface of the positive support frame 8, the fixing and the installation of the fixing and the fixing of the fixing and the top installation of the circuit mounting plate 9 are realized.

In one embodiment, for the locking mechanism 15, the locking mechanism 15 includes a rotating shaft 1501 inserted in the center of the front surface of the top plate 14, the rotating shaft 1501 is provided with a knob 1502 on the front surface, the back surface of the rotating shaft 1501 is provided with a rotation link 1503, both ends of the rotation link 1503 are provided with a link 1504 and keep a movable connection, the other end of the link 1504 is provided with a locking rod 1505 and keep a movable connection, both sides of the back of the top plate 14 are provided with a limit side lug 1506 matched with the locking rod 1505, the locking rod 1505 is located on the back surface of the supporting frame 7, and the middle position of the front surface of the supporting frame 7 is provided with a supporting groove 23 matched with the back supporting frame 11, so that the supporting frame 7 can realize limit fixing inside the fixing frame 6 through the adjusting function of the two locking rods 1505, and the strength of the structure is ensured.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

In practical application, this power rack is used for three level high-voltage inverter power unit's power supply, through the wire with the positive ammeter 16 of cabinet door 2, scram button 17 with switch be connected to inside components and parts 10 together to the realization operation, and radiator fan 12 continuously works in the use, absorbs and transmits the produced heat of components and parts 10 and circuit mounting panel 9 through heat-conducting plate 13, realizes the heat dissipation through the forced air cooling. During the assembly of the cabinet, the assembly of the support frame 7 with the circuit-mounting board 9 is required. Can fix circuit mounting panel 9 openly at positive carriage 8 earlier, be about to joint side bar 21 bottom support go into bearing chassis 20 in and promote downwards and make its joint inside, paste tight positive carriage 8 completely up to circuit mounting panel 9, be connected fixedly with positive carriage 8 at circuit mounting panel 9 top through the bolt. Then, the three limiting sliding grooves 19 at the bottom of the supporting frame 7 are aligned with the three supporting bottom rods 5 and placed to the top, the supporting frame 7 is vertically pushed inwards until the back supporting frame 11 is clamped into the supporting grooves 23, and the locking mechanism 15 is adjusted. That is, the knob 1502 is rotated to rotate the rotation link 1503, and the links 1504 at both ends push the two locking levers 1505 to slide to both sides until the locking levers 1505 are closely attached to the back of the fixed frame 6, thereby forming a stable support. And the supporting frame 7 and the fixing frame 6 are fixedly connected through bolts, so that stability and firmness are ensured.

In summary, according to the above technical solution of the present invention, the internal component 10 is stably supported and the stability of operation is ensured through the multi-layer structural design of the frame, and the heat dissipation efficiency of the component 10 can be greatly improved and the stability of the component 10 is further improved due to the internal air flow and the double-layer heat dissipation structure formed by the heat conduction plate 13 and the heat dissipation fan 12; meanwhile, all the structures are clamped and fixed, so that the installation difficulty and the maintenance cost of the equipment can be greatly reduced, and the assembly efficiency is improved; meanwhile, the locking mechanism 15 can limit and fix the supporting frame 7 in the installation process or the debugging and running process, so that the steps and difficulty of installation of internal equipment are reduced. Through setting up three support sill bar 5 and spacing spout 19, the degree of difficulty when can reducing braced frame 7 installation is and guarantee braced frame 7's stability, through the support groove 23 of seting up, can guarantee that fixed frame 6 and braced frame 7 realize closely laminating, further improves inner structure's structural strength.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a three level power supply cabinets for high-voltage inverter power unit power supply, includes rack main part (1), and this rack main part (1) openly is provided with cabinet door (2), and a plurality of louvres (3), its characterized in that have all been seted up to this rack main part (1) both sides:

a bottom plate (4) is arranged at the bottom of the front face of the cabinet main body (1), three supporting bottom rods (5) are arranged at the top of the bottom plate (4) and the back of the cabinet main body (1), fixed frames (6) are arranged on two inner side walls of the cabinet main body (1), and a supporting frame (7) is arranged between the fixed frames (6) and the supporting bottom rods (5);

a front supporting frame (8) is arranged at the bottom of the front surface of the supporting frame (7), a circuit mounting plate (9) is arranged at the front surface of the front supporting frame (8), components (10) are arranged at the front surface of the circuit mounting plate (9), a back supporting frame (11) is arranged at the bottom of the back surface of the supporting frame (7), a plurality of radiating fans (12) are arranged at the back surface of the back supporting frame (11), and a heat conducting plate (13) is arranged between the front supporting frame (8) and the back supporting frame (11);

the top of the supporting frame (7) is provided with a top plate (14), and a locking mechanism (15) is arranged in the middle of the top plate (14) in an inserting mode.

2. The power supply cabinet for supplying power to the power unit of the three-level high-voltage frequency converter according to claim 1, wherein an electric meter (16) is arranged on the top of the front surface of the cabinet main body (1), and an emergency stop button (17) is arranged on the top of the front surface of the cabinet main body (1) and below the electric meter (16).

3. The power supply cabinet for supplying power to the power unit of the three-level high-voltage frequency converter according to claim 1, wherein the front surface of the bottom plate (4) is provided with a plurality of ventilation holes (18) which are equidistantly arranged and are distributed in a rectangular shape.

4. The power supply cabinet for supplying power to the power unit of the three-level high-voltage frequency converter according to claim 1, wherein the cross section of the supporting bottom rod (5) is a flat notch structure, and three limiting sliding grooves (19) matched with the supporting bottom rod (5) are formed at the bottom of the supporting frame (7).

5. The power cabinet for supplying power to the power unit of the three-level high-voltage frequency converter according to claim 1, wherein the positive supporting frame (8) is a square frame-shaped structure, a supporting bottom frame (20) is arranged at the front bottom of the positive supporting frame (8), clamping side bars (21) matched with the supporting bottom frame (20) are arranged at the bottoms of the two sides of the circuit mounting plate (9), and a handle (22) is arranged at the top of the circuit mounting plate (9).

6. The power supply cabinet for supplying power to the power unit of the three-level high-voltage frequency converter according to claim 1, wherein the locking mechanism (15) comprises a rotating shaft (1501) inserted in the center of the front surface of the top plate (14), the front surface of the rotating shaft (1501) is provided with a knob (1502), the back surface of the rotating shaft (1501) is provided with a rotation connecting rod (1503), two ends of the rotation connecting rod (1503) are provided with connecting rods (1504) and keep movable connection, the other end of the connecting rod (1504) is provided with a locking rod (1505) and keep movable connection, and two sides of the back of the top plate (14) are provided with limit side lugs (1505) matched with the locking rods (1505).

7. The power supply cabinet for supplying power to a power unit of a three-level high-voltage inverter according to claim 6, wherein the locking lever (1505) is located at the back of the supporting frame (7), and a supporting groove (23) matched with the back supporting frame (11) is formed in the middle position of the front of the supporting frame (7).