Fuse for electrical machinery

Abstract

The utility model relates to the field of electric power, in particular to a fuse for electrical machinery, which comprises a device main body, an upper shell and a lower shell, a plurality of heat dissipation grooves are formed in the side parts of the upper shell and the lower shell, fire-fighting gaskets are arranged in the upper shell and the lower shell, a heat dissipation plate is arranged at the top of each fire-fighting gasket, and a melt is arranged in each fire-fighting gasket. The upper shell body and the lower shell body are provided with inserting columns, inserting grooves, first connecting blocks, through holes, second connecting blocks, fixing bolts and fastening pieces, cavities are formed in the fire-fighting gasket and the melt body, the top of each cavity is provided with a first ceramic heat dissipation rod, and the bottom of each cavity is provided with a second ceramic heat dissipation rod. The upper shell body, the lower shell body, the inserting columns, the inserting grooves, the first connecting blocks, the through holes, the second connecting blocks, the fixing bolts and the fastening pieces are used in a matched mode; according to the utility model, through the arrangement of the heat dissipation grooves, the internal ventilation performance of the fuse is improved during later maintenance and use, and through the arrangement of the first ceramic heat dissipation rod and the second ceramic heat dissipation rod, the heat dissipation of the fuse is facilitated, and the service life of the fuse is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of electric power, in particular to a fuse for electrical machinery. Background Art

[0002] A fuse is an electrical device that uses the heat generated by itself to melt the fuse and disconnect the circuit when the current exceeds the specified value. A fuse is a current protector made based on the principle that after the current exceeds the specified value for a period of time, the heat generated by itself will melt the fuse and disconnect the circuit. Fuses are widely used in high and low voltage power distribution systems and control systems as well as electrical equipment. As a short circuit and overcurrent protector, they are one of the most commonly used protection devices.

[0003] A Chinese patent discloses an overheat fuse device for electrical machinery (authorization announcement number CN 220585176U). This patented technology has a good protection effect and the steps for replacing the fuse are simple. However, the existing fuse has a direct connection between the copper wire and the end cover and the gasket. Since the end cover and the gasket are inconvenient to remove, the connection between the copper wire and the end cover and the gasket is very inconvenient during installation and removal, which brings inconvenience to the construction. In addition, the existing fuse has a copper melt and cannot be used for photovoltaic products.

[0004] Therefore, those skilled in the art provide a fuse for an electrical machine to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a fuse for electrical machinery, including a device body, an upper shell and a lower shell, the sides of the upper shell and the lower shell are provided with a plurality of heat dissipation grooves, fire-fighting gaskets are arranged inside the upper shell and the lower shell, a heat dissipation plate is arranged on the top of the fire-fighting gasket, a fuse is arranged inside the fire-fighting gasket, a cavity is arranged inside the fire-fighting gasket and the fuse, a ceramic heat dissipation rod 1 is arranged on the top of the cavity, and a ceramic heat dissipation rod 2 is arranged at the bottom of the cavity;

[0006] Furthermore, quartz sand is filled between the melt and the outer wall. Furthermore, the melt is made of pure silver. Terminals are arranged on the outside of the melt. Ceramic insulation and heat sinks are arranged on the terminal posts, which are used in coordination with the upper shell and the lower shell.

[0007] Preferably: support columns are provided at the four corners of the lower end of the lower shell, and anti-slip pads are provided at the lower ends of the support columns. The heat dissipation slots are evenly arranged, and the number of heat dissipation slots can be set as needed. Insert columns are provided at the four corners of the lower end of the upper shell, and a slot is opened at the upper end of the lower shell.

[0008] Preferably: the slots and the posts are connected to each other, a connecting block 1 is arranged in the middle of the upper shell, a through hole is opened on the connecting block 1, and a connecting block 2 is arranged in the middle of the lower shell, the connecting block 1 and the connecting block 2 are fastened with fixing bolts, the fixing bolts are inserted into the inside of the through hole, and fasteners are arranged on the fixing bolts, and the fire-fighting gasket is a closed bag made of glass fiber fire-resistant cloth, which contains a part of air and inorganic salt powder with fire-extinguishing efficiency.

[0009] Technical effects and advantages of the utility model:

[0010] 1. The utility model facilitates the disassembly of the fuse and the subsequent maintenance and use by providing the upper shell and the lower shell and the provided plug posts, slots, connecting block 1, through holes, connecting block 2, fixing bolts and fasteners. The heat dissipation grooves increase the ventilation performance inside the fuse, and the ceramic heat dissipation rods 1 and 2 are provided to facilitate the heat dissipation of the fuse and increase its service life.

[0011] 2. By setting up ceramic insulation and heat sink, electric shock is prevented while the heat dissipation function of the fuse is increased; through the essence of the fireproof gasket, fire is effectively prevented and the service life of the fuse is increased. It has a simple structure, is easy to use and install, simple to operate, labor-saving, easy to assemble and disassemble, low cost, good fusing effect, stable performance, wide application range, long service life, and has a safe and reliable function. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of a fuse for electrical machinery provided in an embodiment of the present application. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of a fuse for electrical machinery provided in an embodiment of the present application. Figure 2 ;

[0014] Figure 3 It is a structural schematic diagram of a plug post, a connecting block 1, a through hole and a connecting block 2 in a fuse for an electrical machine provided in an embodiment of the present application;

[0015] Figure 4 It is a structural schematic diagram of a hollow cavity, a ceramic heat sink rod 1, a ceramic heat sink rod 2, a heat sink plate, a fuse, a terminal, and a ceramic insulator and a heat sink in an electrical machinery fuse provided in an embodiment of the present application;

[0016] Figure 5 It is a structural schematic diagram of a device body, an upper shell and a lower shell in a fuse for an electrical machine provided in an embodiment of the present application;

[0017] Figure 6It is a structural schematic diagram of a fuse, a terminal, a ceramic insulator and a heat sink in a fuse for electrical machinery provided in an embodiment of the present application;

[0018] Figure 7 It is a structural schematic diagram of an upper housing in a fuse for electrical machinery provided in an embodiment of the present application;

[0019] Figure 8 This is a fuse for electrical machinery provided in the embodiment of the present application Figure 3 The structural diagram at A in the middle;

[0020] Fig. 9 This is a fuse for electrical machinery provided in the embodiment of the present application Figure 2 Schematic diagram of the structure at B in the figure.

[0021] In the figure: 1. Device body; 2. Upper shell; 3. Lower shell; 4. Support column; 5. Anti-skid pad; 6. Heat dissipation groove; 7. Plug column; 8. Slot; 9. Connection block 1; 10. Through hole; 11. Connection block 2; 12. Fixing bolt; 13. Fastener; 14. Cavity; 15. Ceramic heat sink 1; 16. Ceramic heat sink 2; 17. Heat sink; 18. Melt; 19. Terminal; 20. Ceramic insulation and heat sink. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0023] Example 1

[0024] See also Figures 1 to 9In the present embodiment, a fuse for electrical machinery is provided, including a device body 1, an upper shell 2 and a lower shell 3. The four corners of the lower end of the lower shell 3 are provided with support columns 4, and the lower ends of the support columns 4 are provided with anti-slip pads 5. The sides of the upper shell 2 and the lower shell 3 are provided with a plurality of heat dissipation grooves 6. The heat dissipation grooves 6 are evenly arranged, and the number of heat dissipation grooves 6 can be set as needed. Plug columns 7 are provided at the four corners of the lower end of the upper shell 2, and a slot 8 is provided at the upper end of the lower shell 3. The slot 8 and the plug column 7 are connected to each other. A connecting block 9 is provided in the middle of the upper shell 2, and a through hole 10 is provided on the connecting block 9. A connecting block 2 11 is provided in the middle of the lower shell 3. The connecting block 9 and the connecting block 2 11 are fastened with fixing bolts 12. The fixing bolts 12 are inserted into the inside of the through hole 10, and the fixing bolts 12 are provided Fastener 13, fire-fighting gaskets are arranged inside the upper shell 2 and the lower shell 3, a heat sink 17 is arranged on the top of the fire-fighting gasket, a melt 18 is arranged inside the fire-fighting gasket, a cavity 14 is arranged inside the fire-fighting gasket and the melt 18, a ceramic heat sink 15 is arranged on the top of the cavity 14, and a ceramic heat sink 2 16 is arranged at the bottom of the cavity 14. The fire-fighting gasket is a closed bag made of glass fiber fire-resistant cloth, which contains a part of air and inorganic salt powder with fire extinguishing efficiency; when the circuit short circuit makes the internal temperature of the melt 18 too high, the ceramic heat sink 15 and the ceramic heat sink 2 16 transfer the internal heat to the fire-fighting gasket, and when subjected to high temperature, the air inside the fire-fighting gasket expands due to the heat, causing it to explode, so that the inorganic salt powder with fire extinguishing efficiency inside is sprayed into the cavity 14 to prevent the occurrence of fire;

[0025] Furthermore, quartz sand is filled between the melt 18 and the outer wall. Furthermore, the melt 18 is made of pure silver melt 18. Terminals 19 are arranged on the outside of the melt 18. Ceramic insulation and heat sinks 20 are arranged on the terminal posts 19. The upper shell 2 and the lower shell 3 are used in coordination to facilitate the disassembly of the fuse. During the subsequent maintenance and use, the ventilation performance inside the fuse is increased through the heat dissipation grooves 6. The heat dissipation of the fuse is facilitated by the ceramic heat sink 15 and the ceramic heat sink 2 16. The heat dissipation of the fuse is facilitated and its service life is increased. The ceramic insulation and heat sink 20 are provided to prevent electric shock and increase the heat dissipation function of the fuse. The fireproof gasket is used to effectively prevent fire and increase the service life of the fuse. The structure is simple, easy to use and install, simple to operate, labor-saving, easy to assemble and disassemble, low cost, good fusing effect, stable performance, wide application range, long service life, and safe and reliable.

[0026] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A fuse for electrical machinery, comprising a device body (1), an upper shell (2) and a lower shell (3), characterized in that: The sides of the upper shell (2) and the lower shell (3) are both provided with a plurality of heat dissipation grooves (6); a fire-fighting gasket is arranged inside the upper shell (2) and the lower shell (3); a heat dissipation plate (17) is arranged on the top of the fire-fighting gasket; a melt (18) is arranged inside the fire-fighting gasket; a cavity (14) is arranged inside the fire-fighting gasket and the melt (18); a ceramic heat dissipation rod (15) is arranged on the top of the cavity (14); and a ceramic heat dissipation rod (16) is arranged on the bottom of the cavity (14); The melt (18) is made of pure silver melt (18), and the outer side of the melt (18) is provided with a terminal (19), and the terminal (19) is provided with a ceramic insulation and heat sink (20), which is used in conjunction with an upper shell (2) and a lower shell (3).

2. The fuse for electrical machinery according to claim 1, characterized in that: Support columns (4) are arranged at the four corners of the lower end of the lower shell (3), and anti-slip pads (5) are arranged at the lower ends of the support columns (4).

3. The fuse for electrical machinery according to claim 2, characterized in that: The heat dissipation grooves (6) are evenly arranged, and the number of the heat dissipation grooves (6) can be set as required.

4. The fuse for electrical machinery according to claim 1, characterized in that: Insertion posts (7) are arranged at the four corners of the lower end of the upper shell (2), and a slot (8) is provided at the upper end of the lower shell (3).

5. The fuse for electrical machinery according to claim 4, characterized in that: The slot (8) and the plug post (7) are arranged in connection with each other, and a connecting block (9) is arranged in the middle of the upper shell (2).

6. The fuse for electrical machinery according to claim 5, characterized in that: The first connecting block (9) is provided with a through hole (10), and the second connecting block (11) is arranged in the middle of the upper part of the lower shell (3).

7. The fuse for electrical machinery according to claim 6, characterized in that: The connection block 1 (9) and the connection block 2 (11) are fastened with a fixing bolt (12), the fixing bolt (12) is inserted into the interior of the through hole (10), and a fastener (13) is arranged on the fixing bolt (12).

8. The fuse for electrical machinery according to claim 1, characterized in that: The fire-fighting gasket is a closed bag made of glass fiber fire-resistant cloth, which contains a portion of air and inorganic salt powder with fire-extinguishing efficiency, and the space between the melt (18) and the outer wall is filled with quartz sand.

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