阅读说明：本技术 一种用于电力设备的开关电源结构 (Switching power supply structure for power equipment ) 是由 黄坡 于 2020-07-13 设计创作，主要内容包括：本发明公开了一种用于电力设备的开关电源结构,包括开关电源外壳,所述开关电源外壳外顶面固设有灭火盒,所述灭火盒内填充有二氧化碳灭火剂,所述灭火盒内设置有若干喷洒筒,喷洒筒侧面贯穿开设有若干喷洒孔,所述喷洒筒贯穿插接在开关电源外壳顶部,所述喷洒筒下部套设有密封管,所述密封管下端固设有密封塑料板,所述喷洒筒顶部两侧皆固设有支撑板,所述支撑板底面通过弹簧与开关电源外壳固接。本发明通过在开关电源外壳上安装填充有二氧化碳灭火剂的灭火盒,当开关电源外壳内部起火燃烧时,火将密封塑料板点燃烧毁,喷洒筒下部在弹簧拉力作用下从密封管内弹出,使二氧化碳灭火剂通过喷洒筒下部的若干喷洒孔大量喷洒至开关电源外壳内灭火。(The invention discloses a switching power supply structure for power equipment, which comprises a switching power supply shell, wherein a fire extinguishing box is fixedly arranged on the top surface outside the switching power supply shell, a carbon dioxide fire extinguishing agent is filled in the fire extinguishing box, a plurality of spraying cylinders are arranged in the fire extinguishing box, a plurality of spraying holes are formed in the side surfaces of the spraying cylinders in a penetrating mode, the spraying cylinders are inserted into the top of the switching power supply shell in a penetrating mode, a sealing pipe is sleeved on the lower portion of each spraying cylinder, a sealing plastic plate is fixedly arranged at the lower end of each sealing pipe, supporting plates are fixedly arranged on two sides of the top of each spraying cylinder, and the bottom surfaces of the. According to the invention, the fire extinguishing box filled with the carbon dioxide fire extinguishing agent is arranged on the switch power supply shell, when the switch power supply shell is ignited and burnt, the sealing plastic plate is ignited and burnt by fire, the lower part of the spraying cylinder is popped out from the sealing pipe under the action of the spring tension, so that the carbon dioxide fire extinguishing agent is sprayed into the switch power supply shell through a plurality of spraying holes at the lower part of the spraying cylinder in a large quantity to extinguish fire.)

1. A switching power supply structure for an electric power apparatus, comprising a switching power supply case (4), characterized in that: the switch power supply device is characterized in that a fire extinguishing box (3) is fixedly arranged on the outer top surface of the switch power supply shell (4), a carbon dioxide fire extinguishing agent is filled in the fire extinguishing box (3), a plurality of spraying barrels (18) are arranged in the fire extinguishing box (3), a plurality of spraying holes (17) are formed in the side face of each spraying barrel (18) in a penetrating mode, the spraying barrels (18) are inserted into the top of the switch power supply shell (4) in a penetrating mode, a sealing pipe (20) is sleeved on the lower portion of each spraying barrel (18), the top end of each sealing pipe (20) is fixedly connected with the inner top surface of the switch power supply shell (4), a sealing plastic plate (21) is fixedly arranged at the lower end of each sealing pipe (20), supporting plates (16) are fixedly arranged on the two sides of the top of each spraying barrel (18).

2. A switching power supply structure for power equipment according to claim 1, characterized in that: an opening (2) is formed in the left side of the top face of the fire extinguishing box (3), and the opening (2) is in threaded connection with the sealing plug (1).

3. A switching power supply structure for power equipment according to claim 1, characterized in that: the sealing tube (20) is made of aluminum alloy.

4. A switching power supply structure for power equipment according to claim 1, characterized in that: the switch power supply comprises a switch power supply shell (4), a plurality of outlets (5) are formed in the top of the switch power supply shell (4) and located under a fire extinguishing box (3) in a penetrating mode, a metal pipe (13) is arranged in the switch power supply shell (4) and located under the outlets (5), the top end of the metal pipe (13) is fixedly connected with the inner top surface of the switch power supply shell (4), a heat conduction sealing plate (12) is fixedly arranged at the bottom end of the metal pipe (13), thermal expansion rubber (11) is filled in the inner bottom of the metal pipe (13), a piston (8) is slidably connected to the inner side of the metal pipe (13) and located above the thermal expansion rubber (11), two sides of the top surface of the piston (8) are fixedly connected with a base (6) through second springs (7), the base (6) is fixedly arranged on the inner wall of the metal pipe (13), a first channel (15) is vertically formed in the upper portion of the piston (8), and a second channel (, and the two sides of the side wall of the metal pipe (13) are provided with second outlets (9), and when the piston (8) completely compresses the spring (7), the second channel (14) is communicated with the second outlets (9).

5. A switching power supply arrangement for an electric power apparatus according to claim 4, characterized in that: the heat-conducting sealing plate (12) is made of aluminum.

6. A switching power supply arrangement for an electric power apparatus according to claim 4, characterized in that: the piston (8) is made of silica gel.

Technical Field

The invention relates to the field of switching power supplies, in particular to a switching power supply structure for power equipment.

Background

A Switch Mode Power Supply (SMPS), also called a switching Power Supply and a switching converter, is a high-frequency Power conversion device, and is a kind of Power Supply. The function is to convert a level voltage into a voltage or current required by the user terminal through different types of architectures. The input of the switching power supply is mostly an ac power supply (e.g., commercial power) or a dc power supply, and the output is mostly equipment requiring a dc power supply, such as a personal computer, and the switching power supply performs voltage and current conversion between the two.

The conventional switching power supply is easy to generate heat in the use process, and is easy to cause the problems of short circuit, spontaneous combustion and the like due to the generation of heat, and particularly when the switching power supply is applied to an unattended power equipment warehouse, a fire disaster caused by the spontaneous combustion of the switching power supply often causes great economic loss.

Disclosure of Invention

The present invention is directed to a switching power supply structure for an electric power device to solve the above technical problems.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a switching power supply structure for power equipment, includes the switching power supply shell, the outer top surface of switching power supply shell has set firmly the box of putting out a fire, it has the carbon dioxide fire extinguishing agent to pack in the box of putting out a fire, it is provided with a plurality of spray drums to put out a fire, spray drum side runs through and has seted up a plurality of spray holes, spray drum runs through and pegs graft at switching power supply shell top, spray drum lower part cover is equipped with the sealed tube, top surface rigid coupling in sealed tube top and the switching power supply shell, the sealed tube lower extreme has set firmly sealed plastic slab, spray drum top both sides have all set firmly the backup pad, the backup pad underrun spring and switching power supply shell.

Preferably, an opening is formed in the left side of the top face of the fire extinguishing box, and the opening is in threaded connection with the sealing plug.

Preferably, the sealing tube is made of aluminum alloy.

Preferably, the top of the switch power supply shell is located right below the fire extinguishing box and is provided with a plurality of outlets in a penetrating mode, a metal pipe is arranged right below the outlets in the switch power supply shell, the top end of the metal pipe is fixedly connected with the inner top surface of the switch power supply shell, a heat conduction sealing plate is fixedly arranged at the bottom end of the metal pipe, thermal expansion rubber is filled at the bottom of the metal pipe, a piston is slidably connected to the upper portion of the thermal expansion rubber in the metal pipe, two sides of the top surface of the piston are fixedly connected with a base through a second spring, the base is fixedly arranged on the inner wall of the metal pipe, a first channel is vertically formed in the upper portion of the piston, a second channel communicated with the first channel is transversely formed in the lower portion of the piston in a penetrating mode, two sides of the side wall of the metal pipe are provided with second outlets, and.

Preferably, the heat-conducting sealing plate is made of aluminum.

Preferably, the piston is made of silica gel.

The invention has the beneficial effects that:

1. according to the invention, the fire extinguishing box filled with the carbon dioxide fire extinguishing agent is arranged on the switch power supply shell, when the switch power supply shell is ignited and burnt, the sealing plastic plate is ignited and burnt by fire, the lower part of the spraying cylinder is popped out from the sealing pipe under the action of the spring tension, so that the carbon dioxide fire extinguishing agent in a high-pressure state in the fire extinguishing box enters the spraying cylinder through the spraying holes on the upper part of the spraying cylinder and is sprayed into the switch power supply shell through a plurality of spraying holes on the lower part of the spraying cylinder to extinguish fire, thus the automatic fire extinguishing operation of the switch power supply during spontaneous combustion is realized, and the greater loss caused by the spread.

2. When the temperature rises abnormally in the switching power supply shell, the high temperature makes thermal expansion rubber expand, thereby make thermal expansion rubber promote the piston to shift up compression spring, when the piston compresses the spring completely, second passageway and second export intercommunication in the piston make the carbon dioxide fire extinguishing agent loop through the export, first passageway, the second export is spouted a small amount, the quick vaporization heat absorption of spun carbon dioxide fire extinguishing agent, thereby effectively reduce the inside temperature of switching power supply shell, prevent that switching power supply from leading to the short circuit because of lasting high temperature, spontaneous combustion scheduling problem.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of the portion B of FIG. 1;

reference numerals: 1-sealing plug; 2-opening; 3-fire extinguishing box; 4-a switching power supply housing; 5-an outlet; 6-a base; 7-a spring; 8-a piston; 9-a second outlet; 11-a thermally expandable rubber; 12-a thermally conductive sealing plate; 13-a metal tube; 14-a second channel; 15-a first channel; 16-a support plate; 17-spraying holes; 18-a spray cylinder; 19-a spring; 20-sealing the tube; 21-sealing the plastic plate.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood, the invention is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

As shown in fig. 1-3, a switching power supply structure for power equipment, including switching power supply shell 4, switching power supply shell 4 outer top surface has set firmly the box of putting out a fire 3, the box of putting out a fire 3 intussuseption is filled with carbon dioxide fire extinguishing agent, be provided with a plurality of spray tubes 18 in the box of putting out a fire 3, spray tube 18 side runs through and has seted up a plurality of spray holes 17, spray tube 18 runs through and pegs graft at switching power supply shell 4 top, spray tube 18 lower part cover is equipped with sealed tube 20, sealed tube 20 is the aluminum alloy material, the top of sealed tube 20 and the interior top surface rigid coupling of switching power supply shell 4, sealed tube 20 lower extreme has set firmly sealed plastic slab 21, spray tube 18 top both sides have all set firmly backup pad 16, backup pad 16 bottom.

The left side of the top surface of the fire extinguishing box 3 is provided with an opening 2, and the opening 2 is in threaded connection with the sealing plug 1.

The top of the switch power supply shell 4 is positioned under the fire extinguishing box 3 and is provided with a plurality of outlets 5 in a penetrating way, a metal tube 13 is arranged in the switch power supply shell 4 and is positioned under the outlets 5, the top end of the metal tube 13 is fixedly connected with the inner top surface of the switch power supply shell 4, the bottom end of the metal tube 13 is fixedly provided with a heat conduction sealing plate 12, the heat conduction sealing plate 12 is made of aluminum, the inner bottom of the metal tube 13 is filled with thermal expansion rubber 11, a piston 8 is slidably connected above the thermal expansion rubber 11 in the metal tube 13, the piston 8 is made of silica gel, both sides of the top surface of the piston 8 are fixedly connected with a base 6 through a second spring 7, the base 6 is fixedly arranged on the inner wall of the metal tube 13, the upper part of the piston 8 is vertically provided with a first channel 15, the lower part of the piston 8 is transversely provided with a second channel 14 communicated with the, the second passage 14 communicates with the second outlet 9.

The working principle is as follows:

the carbon dioxide fire extinguishing agent is pressurized and filled into the fire extinguishing box 3 through the opening 2, when the temperature in the switch power supply shell 4 rises abnormally, the thermal expansion rubber 11 is expanded at high temperature, so that the thermal expansion rubber 11 pushes the piston 8 to move upwards to compress the spring 7, when the spring 7 is completely compressed by the piston 8, the second channel 14 in the piston 8 is communicated with the second outlet 9, the carbon dioxide fire extinguishing agent is sprayed out through the outlet 5, the first channel 15, the second channel 14 and the second outlet 9 in sequence by a small amount, the sprayed carbon dioxide fire extinguishing agent is quickly vaporized and absorbs heat, so that the temperature in the switch power supply shell 4 is effectively reduced, the problems of short circuit, spontaneous combustion and the like caused by continuous high temperature of the switch power supply are effectively prevented, after the temperature is reduced, the thermal expansion rubber 11 shrinks, the piston 8 moves downwards under the elastic force of the second spring 7, so that the second outlet 9 is separated from the second channel 14, so that the carbon dioxide extinguishing agent is not sprayed out any more.

When the temperature of the carbon dioxide extinguishing agent sprayed from the second outlet 9 is ineffective to be reduced, or the inside of the switch power supply shell 4 is burnt due to short circuit, fire ignites the sealing plastic plate 21 to be burnt, the lower part of the spraying cylinder 18 is popped out from the sealing pipe 20 under the action of the tension of the spring 19, so that the carbon dioxide extinguishing agent in the high-pressure state in the fire extinguishing box 3 enters the spraying cylinder 18 through the spraying holes 17 at the upper part of the spraying cylinder 18 and is sprayed into the switch power supply shell 4 in a large amount through the spraying holes 17 at the lower part of the spraying cylinder 18 to extinguish the fire, thereby realizing the automatic fire extinguishing operation when the switch power supply spontaneously ignites, and effectively preventing the fire from spreading to cause.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.