CN210273232U

CN210273232U - Strengthen heat dissipation type low pressure drawer type cubical switchboard

Info

Publication number: CN210273232U
Application number: CN201920918901.7U
Authority: CN
Inventors: 孙兴民
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-04-07
Anticipated expiration: 2029-06-12

Abstract

The utility model discloses a strengthen heat dissipation type low pressure drawer type switch cabinet. Comprises a cabinet body, a bus chamber, a functional unit chamber and a cable chamber. The vertical bus chamber is characterized in that the vertical bus chamber is composed of a vertical bus cover (1) without heat dissipation holes, a functional unit chamber rear plate (6), a functional unit chamber partition plate (7) and a front partition plate (5) to form the outer wall of a vertically through air draft heat dissipation channel (4), a vertical bus (2) is supported and fixed in the channel by a bus clamp (3), and the vertical bus is supported from the lower part by a supporting plate (8). The supporting plate is vertically arranged. The bus chamber is not provided with an upper closing plate, a lower closing plate and a transverse clapboard so as to ensure that the channel is fully smooth. The top air outlet (10) of the air draft heat dissipation channel is higher than the highest point (14) of the vertical bus, so that the air draft effect is stronger, and the heat dissipation effect is better. The utility model discloses realized the radiating effect of forced draft with the structure of nature convulsions, and need not install fan, water pipe and refrigeration plant, be favorable to the long-term reliable operation of cubical switchboard.

Description

Strengthen heat dissipation type low pressure drawer type cubical switchboard

Technical Field

The utility model belongs to the technical field of the electric power machine makes, especially low-voltage drawer type switch cabinet's manufacturing technology.

Background

With the increase of power consumption and the increase of electric equipment, low-voltage drawer type switch cabinets are increasingly widely applied.

Due to safety protection considerations, the low-voltage drawer type switch cabinet structure isolates different electrical parts from each other to form different compartments. The common low-voltage drawer type switch cabinet is divided into a bus chamber, a functional unit chamber and a cable chamber. The bus chamber is divided into a main bus chamber horizontally arranged and a vertical bus chamber vertically arranged, and the functional unit chamber is divided into a drawer type and a fixed separation type. The functional unit chambers are vertically stacked up and down, and the number of the functional unit chambers is few, and the number of the functional unit chambers is thirty. Since the power supply for each drawer unit and the fixed partition unit is taken from the vertical bus in the vertical bus compartment, the vertical bus carries the full power load of the switchgear cabinet. In operation, the heating of the plug part of the main circuit connector inserted with the vertical bus and the heating of the vertical bus make the vertical bus chamber become the main heating area of the low-voltage drawer type switch cabinet. The over-high temperature rise generated by heating leads to the shortening of the service life of components, the reduction of the load capacity, the influence on the safe operation and even the failure of equipment.

In order to reduce the temperature rise during the operation of the vertical bus chamber, the bus copper bar lapping is done, the quality of a main circuit connector is improved, and the heating caused by contact resistance is reduced. The prior art mainly solves the heat dissipation problem of the low-voltage drawer type switch cabinet in the following four ways. The method comprises the following steps:

1. and heat dissipation holes are formed in the outer wall of the vertical bus chamber. For example, 200520074277 vertical bus bar system for low voltage switchgears and 201220650609 rear closure plate for vertical bus bars in switchgears. The technical scheme is that the heat dissipation holes are formed in the outer wall (the vertical bus cover) of the vertical bus, the vertical bus is improved from a completely closed state to heat dissipation through the heat dissipation holes, the heat dissipation condition is improved to a certain extent, and the temperature rise is reduced.

2. A heat dissipation fan is arranged. For example, 201010514272 forced heat dissipation switch cabinet and 201811014423 high efficiency heat dissipation switch cabinet use fans to dissipate heat forcibly. The service life of the cooling fan is generally 3 ten thousand hours, the continuous operation service life is about 4 years, and the service life of a control circuit of the fan is shorter. Therefore, although the scheme can achieve forced heat dissipation in the initial operation, the workload of later maintenance is large, the electric energy is consumed, and the use is limited to a certain extent.

3. And (6) water cooling and heat dissipation. For example, 201610185866 a water-cooled power distribution cabinet and 201810659710 a high-low voltage switch cabinet with heat dissipation function are water-cooled heat dissipation schemes. However, in case of water leakage or condensation on the water-cooling heat dissipation device, the water-cooling heat dissipation device threatens the safe operation of the electrical equipment, and is not practical in engineering.

4. And a refrigeration device is arranged in the switch cabinet. For example, 201510723693 semiconductor refrigeration cooling dustproof power distribution cabinet and 201811089512 low-voltage draw-out type switch cabinet easy to dissipate heat are cooling schemes for installing refrigeration equipment in the switch cabinet. However, the installation of the refrigeration equipment in the switch cabinet complicates the structure of the switch cabinet, and further causes contradictions between space and time of operation and maintenance work, so that the refrigeration equipment is inconvenient to adopt in engineering.

By combining the analysis of the heat dissipation schemes, people always seek the best method for enhancing the heat dissipation of the low-voltage switch cabinet, but the prior art does not find a technical scheme for well solving the heat dissipation problem of the low-voltage drawer type switch cabinet. In the engineering reality, a heat dissipation scheme which has the advantages of simple structure, safe and reliable operation, easy maintenance (preferably free of maintenance), no power consumption, long service life and enhanced heat dissipation effect is urgently needed.

Disclosure of Invention

The utility model provides a strengthen heat dissipation type low pressure drawer type switch cabinet makes low pressure drawer type switch cabinet, and the heat that especially perpendicular generating line room during operation produced easily gives off, can not produce high temperature rise to guarantee that low pressure drawer type switch cabinet can long-term reliable operation.

The utility model discloses a realize like this, a strengthen heat dissipation type low pressure drawer type cubical switchboard comprises the cabinet body, generating line room, functional unit room and cable chamber. Wherein the bus bar room is divided into a main bus bar room horizontally arranged and a vertical bus bar room vertically arranged. The vertical bus chamber is composed of a vertical bus cover 1 without heat dissipation holes, a functional unit chamber rear plate 6, a functional unit chamber partition plate 7 and a front partition plate 5 to form the outer wall of an air draft heat dissipation channel 4 which is vertically communicated with the vertical bus chamber, a vertical bus 2 is supported and fixed in the air draft heat dissipation channel through a bus clamp 3, and the weight of the vertical bus is supported from the lower part through a vertical bus supporting plate 8. The vertical bus supporting plate is vertically arranged. The vertical bus chamber is not provided with an upper sealing plate, a lower sealing plate and other transverse clapboards, so that the air draft heat dissipation channel is fully and smoothly arranged in the vertical direction. The air outlet 10 at the top end of the air draft heat dissipation channel is higher than the highest point 14 of the vertical bus, so that the air draft effect is stronger, and the heat dissipation effect is better.

The utility model discloses an operating principle is, sets up convulsions heat dissipation channel around vertical bus, and this passageway vertical direction link up vertical bus room wholly, makes the vertical bus that generates heat the most arrange in this passageway. When heat is generated at the splicing part and the whole length of the vertical bus in operation, the air draft heat dissipation channel formed by the vertical bus chamber utilizes the pressure difference of hot and cold air inside and outside the channel to form the accelerated upward flow of hot air in the channel, and the hot air flows out from the upper outlet to take away the heat on the vertical bus. The lower opening of the air draft heat dissipation channel can continuously supplement cold air, so that the heat dissipation of the vertical bus is accelerated, and the temperature rise is reduced. The larger the current on the vertical bus is, the more the heating is beneficial, and the stronger the action of the air draft tube formed by the inner cavity of the air draft heat dissipation channel is, so that the heat dissipation effect of the vertical bus is better. The utility model discloses realized the radiating effect of forced draft with the structure of nature convulsions, and need not install fan, water pipe and refrigeration plant, be favorable to the long-term reliable operation of low pressure drawer type switch cabinet.

The air draft heat dissipation channel is suitable for a vertical bus system adopting rectangular buses, L-shaped buses or other special-shaped buses in any shapes. As long as the vertical bus is arranged in the structure of the air draft heat dissipation channel provided by the invention and the vertical direction in the channel is sufficiently smooth, the good air draft heat dissipation effect can be achieved.

The following describes the method of the present invention in detail with reference to the accompanying drawings and the description of the present invention.

Drawings

FIG. 1 is a side cross-sectional view of a reinforced heat dissipation type low-voltage drawer type switch cabinet;

FIG. 2 is a cross-sectional view of the vertical busbar compartment of the first embodiment;

FIG. 3 is a cross-sectional view of a vertical bus compartment of a functional plate-type bus bar cover according to a second embodiment;

FIG. 4 is a cross-sectional view of a vertical busbar compartment of a third embodiment of the unitary busbar cover;

FIG. 5 is a schematic view of vertical installation of a vertical bus bar pallet;

FIG. 6 is a schematic view of the installation of the ventilation and heat dissipation channel extending out of the top of the cabinet;

FIG. 7 is a schematic view of the installation of the top section of the ventilation and heat dissipation channel cabinet;

fig. 8 and fig. 1 are reduced views.

The main structural symbols in the drawings:

1-vertical bus cover, 2-vertical buses (3), 3-vertical bus clamps (10 pairs, made of insulating material), 4-air draft heat dissipation channel, 5-front partition (made of insulating material), 6-functional unit chamber back plate (9), 7-functional unit chamber partition (10), 8-vertical bus splint (made of insulating material), 9-main circuit connectors (9), 10-air draft heat dissipation channel air outlet, 11-vertical bus back cover, 12-left side plate, 13-right side plate, 14-vertical bus top end, 15-cabinet top cover air outlet, 16-screw, 17-staple bolt, 18-hexagon bolt (2), 19-screw, 20-vertical bus splint mounting hole (2), 21-functional plate type vertical bus rear cover, 22-vertical bus supporting plate grooves (3), 23-air draft heat dissipation channel lengthened section, 24-protective grid net, 25-folded edge, 26-screw and 27-air draft heat dissipation channel cabinet top section.

Detailed Description

The following detailed description of the embodiments is made with reference to the accompanying drawings.

FIG. 1 is a side view of the enhanced heat dissipation low voltage drawer type switch cabinet of the present invention. The bus-bar cabinet is composed of a cabinet body, a bus-bar chamber, a functional unit chamber and a cable chamber. Wherein the bus bar room is divided into a main bus bar room horizontally arranged and a vertical bus bar room vertically arranged. The vertical bus chamber is composed of a vertical bus cover 1 without heat dissipation holes, a functional unit chamber rear plate 6, a functional unit chamber partition plate 7 and a front partition plate 5 to form the outer wall of an air draft heat dissipation channel 4 which is vertically communicated with the vertical bus chamber, and the vertical bus 2 is supported and fixed in the air draft heat dissipation channel by a bus clamp 3. Furthermore, the insertion part of the main circuit connector 9 and the vertical bus is also arranged in the air draft heat dissipation channel. The vertical busbar weight is supported from below by a vertical busbar pallet 8. The vertical bus supporting plate is vertically arranged. The vertical bus chamber is not provided with an upper sealing plate, a lower sealing plate and other transverse clapboards, so that the air draft heat dissipation channel is vertical and fully smooth. The air outlet 10 at the top end of the air draft heat dissipation channel is higher than the highest point 14 of the vertical bus, so that the air draft effect is stronger, and the heat dissipation effect is better. The hot air exhausted from the air outlet 10 at the top end of the air draft heat dissipation channel is further exhausted out of the cabinet from the air outlet 15 at the top cover of the cabinet body.

Fig. 2 is a cross-sectional view of a vertical bus-bar compartment according to a first embodiment of the present invention. The vertical busbar cover 1 is made into an assembled type and comprises a vertical busbar rear cover 11, a left side plate 12 and a right side plate 13. The left side plate 12 and the right side plate 13 are fixed on the functional unit chamber partition plate 7 by screws 16; the vertical bus rear cover 11 is formed by splicing a plurality of sections with smaller height, the connection in the vertical direction is clamped by a buckle, the installation in the left and right direction is fixed at the rear sides of the left side plate 12 and the right side plate 13 by a staple bolt 17, and the staple bolt and the functional unit chamber rear plate 6 form an air draft heat dissipation channel 4 which is sealed around the vertical bus chamber; the vertical bus bar 2 is supported by a bus bar holder 3 and fixed to the functional unit cell partition 7 by a hexagonal bolt 18.

Fig. 3 is a cross-sectional view of a vertical bus-bar compartment according to a second embodiment of the present invention. The vertical busbar rear cover is made of a functional plate type, so that the vertical busbar cover 1 comprises a functional plate type vertical busbar rear cover 21, a left side plate 12 and a right side plate 13. The left side plate 12 and the right side plate 13 are fixed on the functional unit chamber partition plate 7 by screws 16; the functional plate type vertical bus rear cover 21 is formed by splicing a plurality of sections with small height, the connection in the up-down direction is clamped by a buckle, the installation screws 19 in the left-right direction are fixed at the rear sides of the left side plate 12 and the right side plate 13, and the functional plate type vertical bus rear cover and the functional unit chamber rear plate 6 form an air draft heat dissipation channel 4 with the periphery of a vertical bus chamber closed.

Fig. 4 is a cross-sectional view of a vertical busbar compartment according to a third embodiment of the present invention. The vertical bus bar cover 1 is formed in one piece and is fixed to the function unit compartment partition 7 by screws 16.

Figure 5 is the vertical installation schematic diagram of the vertical busbar supporting plate of the utility model. The vertical bus supporting plate 8 is vertically arranged in the middle of a bus clamp 3 at the lowest end of the vertical bus chamber and is fixed by a hexagon bolt 18 penetrating through a hole 20 on the vertical bus supporting plate 8. Further, the groove 22 of the vertical busbar support plate 8 fixes the lower end of the vertical busbar 2.

Fig. 6 is the installation schematic diagram of the extended section of the ventilation heat dissipation channel extending out of the top of the cabinet. When enough space exists above the cabinet top of the low-voltage drawer type switch cabinet installation site, the air draft heat dissipation channel lengthening section 23 extends out of the cabinet top, the height of the air draft heat dissipation channel is lengthened, the air draft effect is enhanced, and the heat dissipation effect is enhanced. The structure and the mounting mode of convulsions heat dissipation channel extension section are, set up outside hem 25 in left side board 12,

right side board

13 and 5 upper ends of preceding baffle, and the lower extreme of convulsions heat dissipation channel extension section 23 also sets up corresponding hem 25, sets up corresponding mounting hole on the hem, installs extension section in convulsions heat dissipation channel upper end through corresponding the mounting hole with screw 26 to stretch out the cabinet top, with reinforcing convulsions radiating effect. The top of the extended section 23 of the air draft heat dissipation channel is provided with a protective grid 24 to prevent foreign matters from falling and small animals from entering.

Fig. 7 is a schematic view of the installation of the extraction heat sink channel cabinet top section 27. As a low-voltage drawer type switch cabinet series member, the cabinet body with different functions such as an incoming line cabinet, a bus coupler cabinet, a capacitance compensation cabinet, a dual-power switching cabinet, a frame switch feed cabinet and the like can structurally take the whole cabinet body as the lower half part of an air draft heat dissipation channel because the heating part is not concentrated like a drawer feed cabinet. The upper half part is an air draft heat dissipation channel cabinet top section 27 which is arranged on a reserved vacant position of a cabinet top cover and is fully and smoothly communicated with the original cabinet body in the vertical direction to form a new air draft heat dissipation channel communicated and heightened. Structurally, the original ventilation hole at the lower part of the cabinet body is reserved and used as an air inlet of a new air draft heat dissipation channel. The upper part of the cabinet body is not provided with a ventilation hole. The upper opening of the top section 27 of the ventilation cooling channel cabinet is used as the air outlet of the new ventilation cooling channel. The top of the top section 27 of the air draft heat dissipation channel cabinet is provided with a protective grid 24 to prevent foreign matters from falling and small animals from entering.

The top section 27 of the ventilation and heat dissipation channel cabinet can be made into a rectangle or a circle. The top section 27 of the air draft heat dissipation channel cabinet and the lengthened section 23 of the air draft heat dissipation channel are used as accessories of the low-voltage drawer type switch cabinet and are transported to an installation site along with the switch cabinet. After the works of cabinet combination, fixing, main bus installation, outgoing cable installation and the like are finished by a field installation and construction unit, the top section 27 of the air draft heat dissipation channel cabinet and the lengthened section 23 of the air draft heat dissipation channel are installed at the specified positions of the low-voltage drawer type switch cabinet.

Fig. 8 is a reduced view of fig. 1. In order to clearly distinguish the details of the figure when the figure is reduced.

Claims

1. A reinforced heat dissipation type low-voltage drawer type switch cabinet is composed of a cabinet body, a bus chamber, a functional unit chamber and a cable chamber and is characterized in that a vertical bus chamber is composed of a vertical bus cover (1) without heat dissipation holes, a functional unit chamber rear plate (6), a functional unit chamber partition plate (7) and a front partition plate (5) to form the outer wall of a ventilation heat dissipation channel (4) which is vertically communicated with the vertical bus chamber, a vertical bus (2) is supported and fixed in the ventilation heat dissipation channel through a bus clamp (3), a vertical bus supporting plate (8) is vertically arranged, the vertical bus chamber is not provided with an upper sealing plate, a lower sealing plate and other transverse partition plates to enable the ventilation heat dissipation channel to be vertically and fully unblocked, and the highest point (14) of the ventilation heat dissipation channel is higher than the highest point (10) of the vertical.

2. The enhanced heat dissipation low-voltage drawer type switch cabinet as claimed in claim 1, wherein the vertical busbar cover (1) is made in an assembled type and comprises a vertical busbar rear cover (11), a left side plate (12) and a right side plate (13), and the left side plate (12) and the right side plate (13) are fixed on the function unit chamber partition plate (7) by screws (16); the vertical bus rear cover (11) is formed by splicing multiple sections with smaller height, the connection in the vertical direction is clamped by a buckle, the installation in the left and right directions is fixed on the rear sides of a left side plate (12) and a right side plate (13) by a staple bolt (17), and a ventilation and heat dissipation channel (4) which is sealed around the vertical bus chamber is formed by the vertical bus rear cover, the functional unit chamber baffle (7) and a front baffle (5); the vertical bus bar (2) is supported by a bus bar clamp (3) and is fixed to the functional unit chamber partition (7) by a hexagonal bolt (18).

3. The enhanced heat dissipation low-voltage drawer type switch cabinet as recited in claim 1, wherein the vertical bus bar rear cover is made of a functional plate type, so that the vertical bus bar cover (1) comprises a functional plate type vertical bus bar rear cover (21), a left side plate (12) and a right side plate (13), and the left side plate (12) and the right side plate (13) are fixed on the functional unit chamber partition plate (7) by screws (16); the functional plate type vertical bus rear cover (21) is formed by splicing a plurality of sections with smaller height, the connection in the vertical direction is clamped by a buckle, and the installation in the left and right directions is fixed on the rear sides of a left side plate (12) and a right side plate (13) by screws (19) to form an air draft heat dissipation channel (4) which is sealed around a vertical bus chamber.

4. The enhanced heat dissipation low voltage drawer type switch cabinet as claimed in claim 1, wherein the vertical bus bar cover (1) is made in a single body and is fixed to the function unit compartment partition (7) by screws (16).

5. The enhanced heat dissipation low-voltage drawer type switch cabinet as claimed in claim 1, wherein the vertical busbar support plate (8) is vertically installed in the middle of the busbar clamp (3) at the lowest end of the vertical busbar chamber and fixed by a hexagon bolt (18) penetrating through a hole (20) on the vertical busbar support plate (8), and further, a groove (22) on the vertical busbar support plate (8) fixes the lower end of the vertical busbar (2).