CN219042345U

CN219042345U - Automatic heat abstractor of totally closed electrical control cabinet

Info

Publication number: CN219042345U
Application number: CN202223014451.XU
Authority: CN
Inventors: 匡政
Original assignee: Datang Shandong Electric Power Overhaul and Operation Co Ltd
Current assignee: Datang Shandong Electric Power Overhaul and Operation Co Ltd
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-05-16
Anticipated expiration: 2032-11-11

Abstract

The utility model discloses an automatic heat dissipation device of a totally-enclosed electrical control cabinet, which can dissipate heat of the control cabinet under the condition of no ventilation and water supply, ensure that the control cabinet is sealed and completely isolated from the outside, and can automatically adjust according to the temperature in the cabinet to prevent dew condensation caused by the excessively low temperature, and the specific scheme is as follows: the utility model provides a totally closed electrical control cabinet automatic heat abstractor, includes refrigeration heat dissipation module and auxiliary mechanism, refrigeration heat dissipation mould fixed connection is on the cabinet body, the internal portion of cabinet is sealed, refrigeration heat dissipation module includes semiconductor refrigeration piece and aluminum alloy heat radiation fin, the semiconductor refrigeration piece sets up at cabinet body top, heat radiation fin sets up the upper and lower both sides at the semiconductor refrigeration piece, and the heat radiation fin of upside sets up outside the cabinet body, and the heat radiation fin of downside sets up inside the cabinet body.

Description

Automatic heat abstractor of totally closed electrical control cabinet

Technical Field

The disclosure relates to the technical field of electric low-voltage power distribution, in particular to an automatic heat dissipation device of a fully-closed electric control cabinet.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The electric control cabinet is an electric device for installing electric elements and equipment and constructing an electric control loop, and the electric control cabinet mainly comprises carriers serving as the electric elements and the equipment to form the electric control loop; protecting the electric control loop and delaying aging, and preventing short circuit and element damage caused by dust and sundries; preventing personnel from touching the electrified part by mistake to cause electric shock accidents and the like.

With the continuous progress of electric control loop and equipment, especially the continuous popularization and application of power electronics technology, the calorific capacity of a lot of components has had obvious improvement, and in the past electric control cabinet mainly cools off component and equipment through ventilation or water-cooling mode, but often has following problem in the actual use: on one hand, the ventilation cooling scheme has poor cooling effect, affects the stable operation of equipment and is easy to burn out elements or equipment; on the other hand, the tightness of the control cabinet is difficult to ensure, dust and sundries are easy to enter the cabinet, manual cleaning is time-consuming and labor-consuming, and short-circuit accidents are easy to occur. The water-cooled cooling scheme requires a relatively bulky heat dissipation system and, once water leaks, tends to cause irreversible equipment damage.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model provides the automatic heat dissipation device for the totally-enclosed electrical control cabinet, which can dissipate heat of the control cabinet under the condition of no ventilation and water supply, ensure that the control cabinet is enclosed and completely isolated from the outside, automatically adjust according to the temperature in the cabinet and prevent dew condensation caused by the excessively low temperature.

In order to achieve the above object, the present utility model is realized by the following technical scheme:

the utility model provides a totally closed electrical control cabinet automatic heat abstractor, includes refrigeration heat dissipation module and auxiliary mechanism, refrigeration heat dissipation mould fixed connection is on the cabinet body, the internal portion of cabinet is sealed, refrigeration heat dissipation module includes semiconductor refrigeration piece and radiator fin, the semiconductor refrigeration piece sets up at cabinet body top, radiator fin sets up the upper and lower both sides at the semiconductor refrigeration piece, and the radiator fin of upside sets up outside the cabinet body, and the radiator fin of downside sets up inside the cabinet body.

Further, the auxiliary mechanism comprises a water receiving disc, a water conduit and a U-shaped water storage elbow, wherein the water receiving disc is arranged below the radiating fins; one end of the water guide pipe is connected to the water receiving disc, and the other end of the water guide pipe is connected to an opening arranged on the side wall of the cabinet body and used for guiding dew out of the control cabinet; the U-shaped trap is arranged between the water conduit and the cabinet body.

Further, the refrigerating and heat dissipating device also comprises a power supply module and a control module, wherein the power supply module is electrically connected with the refrigerating and heat dissipating module and the control module respectively.

Further, the power supply module and the control module are both arranged inside the cabinet body.

Further, the control module comprises a temperature controller, a temperature probe and a temperature control loop, and the temperature controller is respectively connected with the temperature control loop and the temperature probe.

Further, a relay is arranged on the temperature control loop.

Further, the power supply module comprises a direct current power supply, and the direct current power supply is connected with the refrigerating and heat dissipating module and the control module.

Further, the refrigerating and heat-radiating module further comprises sealing rubber strip heat-conducting silicone grease.

Further, the heat-conducting silicone grease is coated between the semiconductor refrigerating sheet and the radiating fins.

Further, the sealing rubber strip is arranged at the joint of the refrigerating and radiating module and the cabinet body.

The beneficial effects of the utility model are as follows:

1) According to the utility model, the semiconductor refrigerating sheet is arranged at the top of the cabinet body, the radiating fins are arranged at the upper side and the lower side of the semiconductor refrigerating sheet, the radiating fins at the upper side are arranged outside the cabinet body, and the radiating fins at the lower side are arranged inside the cabinet body, so that lighter hot air in the cabinet moves upwards in the cabinet to reach the radiating fins for heat exchange, the semiconductor refrigerating sheet transfers heat to the radiating fins outside the control cabinet, and the external radiating fins radiate the heat to the atmosphere through natural convection; the heat exchange inside and outside the cabinet body is completed without material exchange, so that the tightness of the control cabinet is further ensured, and the influence of dust and sundries on equipment and elements in the cabinet is further reduced.

2) The utility model also provides an auxiliary mechanism which can regulate the air pressure in the cabinet while discharging dew condensed on the radiating fins, thereby balancing the air pressure in the internal and external environments of the totally-enclosed control cabinet.

3) Through the control module, the device realizes the temperature control function.

Drawings

Fig. 1 is a front view of a heat dissipating device of a fully enclosed electrical control cabinet according to embodiment 1 of the present disclosure.

Fig. 2 is an electrical schematic diagram of a heat dissipating device of a fully enclosed electrical control cabinet according to embodiment 1 of the present disclosure.

1-semiconductor refrigerating sheet, 2-water receiving box fixing bolt, 3-heat conduction silicone grease, 4-refrigerating module fixing bolt, 5-heat radiation fin, 6-sealing rubber strip, 7-water receiving box, 8-water conduit, 9-cabinet body and 10-U-shaped water trap.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular forms also are intended to include the plural forms unless the present utility model clearly dictates otherwise, and furthermore, it should be understood that when the terms "comprise" and/or "include" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "upper", "lower", "left" and "right" in the present utility model, if they mean only the directions of upper, lower, left and right in correspondence with the drawings themselves, are not limiting in structure, but merely serve to facilitate description of the present utility model and simplify description, rather than to indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Term interpretation section: the terms "mounted," "connected," "secured," and the like in the present utility model are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the terms are used herein as specific meanings as understood by those of ordinary skill in the art, and are not limited to the following terms.

Example 1

The embodiment 1 of the disclosure provides a totally-enclosed electrical control cabinet heat abstractor, a totally-enclosed electrical control cabinet automatic heat abstractor, including refrigeration heat dissipation module and auxiliary mechanism, refrigeration heat dissipation mould fixed connection is on cabinet body 9 for the internal and external heat exchange of switch board, the cabinet body is the electrical control cabinet promptly, the internal portion of cabinet is sealed, refrigeration heat dissipation module includes semiconductor refrigeration piece 1 and aluminum alloy's fin 5, aluminum alloy fin sets up the upper and lower both sides at the semiconductor refrigeration piece, carries out heat exchange through the auxiliary semiconductor refrigeration piece 1 of fin 5 of aluminum alloy.

The refrigerating and radiating module further comprises a circulating fan, a sealing rubber strip 6, a refrigerating module fixing bolt 4 and heat-conducting silicone grease 3, wherein the circulating fan is arranged on the inner wall of the top of the control cabinet, so that upward circulation of hot air in the cabinet is quickened, and the heat-conducting silicone grease is used for being smeared between the semiconductor refrigerating sheet and the radiating fins, so that the heat conduction efficiency is improved; the joint strip sets up the junction of cooling module department and cabinet body, seals the junction of cooling module department and cabinet body through joint strip.

The auxiliary mechanism is used for fixing the modules and adjusting the internal and external air pressure difference of the totally-enclosed control cabinet to discharge dew. Specifically, the auxiliary mechanism comprises a water receiving disc 7, a water conduit 8,U-shaped water trap 10 and a water receiving box fixing bolt 2, wherein the water receiving disc is arranged below the radiating fins; one end of the water guide pipe is connected to the water receiving disc, and the other end of the water guide pipe is connected to an opening arranged on the side wall of the cabinet body and used for guiding dew out of the control cabinet; the U-shaped trap is arranged between the water conduit and the cabinet body.

Specifically, as shown in fig. 1, a square hole is formed in the top end of the control cabinet, the size of the square hole is identical to or slightly larger than that of the semiconductor refrigeration piece 1, heat conduction silicone grease 3 is uniformly coated on two sides of the refrigeration piece, heat dissipation fins 5 are pressed on the square hole, sealing rubber strips 6 are placed in gaps between the heat dissipation fins and the control cabinet, and the heat dissipation fins and the sealing rubber strips are fixed and pressed by the refrigeration module fixing bolts 4. A water receiving box 7 is arranged below the radiating fins in the control cabinet by a water receiving box fixing bolt 2, a small hole is formed in the middle of the water receiving box, a water conduit 8 is fixed in a plugging or welding mode, the water conduit is led downwards to the bottom of the control cabinet and is connected with a U-shaped water trap 10, and the other end of the U-shaped water trap is connected to the small hole formed in the bottom of the control cabinet.

The heat dissipation device further comprises a power supply module and a control module, wherein the power supply module is electrically connected with the refrigeration heat dissipation module and the control module respectively and used for providing power for the elements.

The control module and the power supply module are both arranged inside the cabinet body, as shown in fig. 2, the control module comprises a temperature controller, a temperature probe and a temperature control loop, the temperature controller is connected with the temperature probe, and the temperature probe converts a temperature signal into an electric signal and provides the electric signal for the temperature controller 1.

The power supply module comprises a switch QS1, a wire and a direct current power supply, wherein the direct current power supply is connected with the refrigerating and heat dissipating module and the control module.

The installation of the electrical components is based on the arrangement requirement of the components in the control cabinet, and the installation is carried out according to the actual situation, the position is not required to be fixed, but attention is paid to the fact that the temperature probe is installed at a position with temperature representation, and in the embodiment, the temperature probe is installed at the inner top of the control cabinet. In the control module, as shown in fig. 2, a power input end L, N of a temperature controller power supply is connected to an alternating current power switch QS1, a temperature input t+ is connected to a corresponding terminal of a temperature probe, switching value output is passive output, a switching value output common end COMM is connected to one end of a relay K1 coil, and switching value output DO1 is connected to the other end of the relay K1 coil. In the power supply module, a power input end L, N of a direct-current power supply is connected to an alternating-current power switch QS1, and a direct-current output end DC+ and DC-are respectively connected with one end of a normally-open contact of a relay K1 and one pole of a semiconductor refrigerating sheet, and the other pole of the semiconductor refrigerating sheet is connected with the other ends of the same pair of normally-open contacts of the relay K1.

The specific using method comprises the following steps:

the equipment and the elements in the control cabinet are installed, all holes are plugged, and the cabinet door sealing strip is installed; the switch QS1 is closed, the temperature controller is debugged, the starting temperature and the stopping temperature of the refrigerating module are set according to the requirement, the temperature is higher than the starting temperature DO1 and is closed, and the temperature is lower than the stopping temperature DO1 and is opened. After the debugging is finished, the automatic heat radiator can be put into operation. When the temperature in the cabinet exceeds the set starting temperature, the temperature controller controls the coil of the relay K1 to be attracted, the normally open contact of the relay K1 is closed, a loop formed by the direct current power supply and the semiconductor refrigerating sheet is closed, and the semiconductor refrigerating sheet starts to refrigerate; because the hot air is lighter, the hot air can move upwards in the cabinet and reach the radiating fins to exchange heat, the semiconductor refrigerating sheet transfers heat to the external radiating fins of the control cabinet, and the external radiating fins radiate heat to the atmosphere through natural convection; when the humidity of the air in the cabinet is high, dew condensation can occur on the surfaces of the inner radiating fins, dew flows into the water receiving box and flows out of the control cabinet through the water diversion pipe; because the temperature in the cabinet is not constant, the air pressure change can occur in the totally-enclosed control cabinet, and at the moment, air can enter and exit the control cabinet through the water conduit to balance the internal pressure and the external pressure; when gas exchange occurs, the U-shaped trap pipe at the bottom of the water diversion pipe can prevent external dust from entering the cabinet, and plays a certain role in sealing the space in the cabinet; when the temperature in the cabinet is reduced to the set stop temperature, the power supply of the relay K1 is disconnected from the temperature controller, the K1 coil is not attracted any more, the normally open contact is restored to the open state, and the semiconductor refrigerating sheet stops working; the above processes are reciprocally circulated, so that the temperature in the cabinet can be maintained in a certain range.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a totally closed electrical control cabinet automatic heat abstractor, its characterized in that includes refrigeration heat dissipation module and auxiliary mechanism, refrigeration heat dissipation mould fixed connection is on the cabinet body, the internal portion of cabinet is sealed, refrigeration heat dissipation module includes semiconductor refrigeration piece and radiator fin, the semiconductor refrigeration piece sets up at cabinet body top, radiator fin sets up the upper and lower both sides at the semiconductor refrigeration piece, and the radiator fin of upside sets up in cabinet body outside, and the radiator fin of downside sets up in the cabinet body inside.

2. The automatic heat dissipating device of a fully enclosed electrical control cabinet according to claim 1, wherein the auxiliary mechanism comprises a water pan, a water conduit, a U-shaped water trap, the water pan being mounted below the heat dissipating fins; one end of the water guide pipe is connected to the water receiving disc, and the other end of the water guide pipe is connected to an opening arranged on the side wall of the cabinet body and used for guiding dew out of the control cabinet; the U-shaped trap is arranged between the water conduit and the cabinet body.

3. The automatic heat dissipation device of a fully-enclosed electrical control cabinet according to claim 1, further comprising a power supply module and a control module, wherein the power supply module is electrically connected with the refrigeration heat dissipation module and the control module respectively.

4. The automatic heat dissipation device for a fully enclosed electrical control cabinet according to claim 3, wherein the power supply module and the control module are both disposed inside the cabinet.

5. The automatic heat dissipation device of a fully-enclosed electrical control cabinet according to claim 4, wherein the control module comprises a temperature controller, a temperature probe and a temperature control loop, and the temperature controller is respectively connected with the temperature control loop and the temperature probe.

6. The automatic heat dissipating device for a fully enclosed electrical control cabinet of claim 5, wherein the temperature control loop is provided with a relay.

7. The automatic heat dissipating device of a fully enclosed electrical control cabinet of claim 3, wherein the power module comprises a dc power source connected to the refrigeration heat dissipating module and the control module.

8. The automatic heat dissipating device of a fully enclosed electrical control cabinet of claim 1, wherein the cooling and heat dissipating module further comprises a sealing rubber strip and a thermally conductive silicone grease.

9. The automatic heat dissipating device for a fully enclosed electrical control cabinet of claim 8, wherein the thermally conductive silicone grease is applied between the semiconductor cooling fin and the heat dissipating fin.

10. The automatic heat dissipating device of a totally enclosed electrical control cabinet of claim 8, wherein the sealing rubber strip is disposed at the junction of the cooling and heat dissipating module and the cabinet.