Cooling fan for industrial transformer

Abstract

The utility model relates to a cooling fan for industrial transformers, including a vertical air duct, a motor is inserted in the air duct, a plurality of motor brackets are fixedly connected to the outer wall of the motor housing, the outer ends of the motor brackets are fixedly connected to the inner wall of the air duct, the motor brackets include a longitudinal bracket plate, an external power socket is fixedly connected to the outer wall of the air duct, and power plugs are formed at both ends of the connecting wire, the power plug at one end of the connecting wire is plugged into the power socket of the motor, and the other end is plugged into the external power socket; the bracket plate of the motor bracket on one side of the motor is formed with a transverse and inwardly concave rib groove, and the bracket plates at both ends of the rib groove are formed with rectangular sockets; the connecting wire passes through the socket of the motor bracket and is inserted into the rib groove. The cooling fan adopts a cable with a plug as a connecting wire, which is convenient for connecting the motor and the external power socket. At the same time, the cable is arranged in the rib groove of the motor bracket, which can reduce the accelerated aging of the cable by airflow and improve the service life of the cable.

Description

Technical field:

[0001] The utility model relates to the technical field of fans, and more specifically to a special cooling fan for industrial transformers. Background technology:

[0002] At present, industrial transformers generate a lot of heat when working. Some industrial transformers will arrange multiple fans for the transformer on one side of the transformer, and cool the transformer through the airflow generated by the fans. The fans are generally axial flow fans, which are composed of an air duct, a motor, an impeller and a motor bracket. An external electric socket is fixedly connected to the outer wall of the air duct, and multiple axial flow fans can be easily connected in series or in parallel through the external electric socket; and the external electric socket and the motor need to be electrically connected by cables. In the traditional installation process, the cables are first connected to the motor, and then the cables are tied and fixed to the motor bracket with cable ties, and then the motor is installed in the air duct, and the cables are passed through the air duct to connect to the external electric socket, but all the cables on the motor bracket are located in the airflow, and the airflow will accelerate aging. The aged cables need to be replaced, but because the space in the air duct is limited (it is inconvenient to remove the wires from the motor and rewire), it is inconvenient to replace the cables in the air duct. Utility model content:

[0003] The purpose of the utility model is to address the deficiencies of the prior art and provide a special cooling fan for industrial transformers. The cooling fan adopts a cable with a plug as a connecting line to facilitate the connection between the motor and the external electric socket. At the same time, the cable is arranged in the rib groove of the motor bracket, which can reduce the accelerated aging of the cable by the airflow and improve the service life of the cable.

[0004] A cooling fan for industrial transformers comprises a vertical air duct, a motor is inserted in the air duct, an impeller is fixedly connected to a plug sleeve on the rotating shaft of the motor, the impeller is inserted in the upper part of the air duct, a plurality of motor brackets are fixedly connected to the outer wall of the motor housing, the outer ends of the motor brackets are fixedly connected to the inner wall of the air duct, the motor brackets comprise longitudinal bracket plates, an external power socket is fixedly connected to the outer wall of the air duct, a connection wire is inserted in the air duct, and power plugs are respectively formed at both ends of the connection wire, the power plug at one end of the connection wire is plugged into the power socket of the motor, and the other end is plugged into the external power socket;

[0005] The support plate of the motor support on one side of the motor is formed with a transverse and inwardly recessed rib groove, and rectangular sockets are formed on the support plate at both ends of the rib groove; the connecting wire passes through the socket of the motor support and is inserted into the rib groove.

[0006] Preferably, arc-shaped inner and outer connecting plates are respectively formed at both ends of the upper bracket plate of the motor bracket, and the inner and outer connecting plates respectively abut against the outer wall of the motor housing and the inner wall of the air guide tube and are respectively fixed to the motor and the air guide tube by bolts.

[0007] Preferably, a relief socket opposite to the power plug is formed on the wall of the air duct on one side of the external power socket, and the power plug is inserted into the relief socket of the air duct.

[0008] Preferably, the cross section of the rib groove on the motor bracket is in the shape of an isosceles trapezoid;

[0009] A cover plate is provided on one side of the motor bracket, which is opposite to the rib groove and is in a horizontal direction. The upper and lower sides of both ends of the cover plate are respectively formed with cantilever buckles, which pass through the sockets of the motor bracket and are buckled on the motor bracket; a pressure block is formed on the side wall of the cover plate close to the cantilever buckle, and the pressure block is inserted in the rib groove, and a rubber pad is adhered and fixed on the pressure block;

[0010] The connecting wire is in the shape of a strip and is clamped and fixed between the bottom surface of the rib groove and the rubber pad.

[0011] Preferably, a circular protective net is fixedly connected to the lower side of the air guide tube.

[0012] Preferably, the motor brackets are provided in three groups, and the motor brackets are evenly distributed in a ring shape around the central axis of the impeller.

[0013] The beneficial effects of the utility model are:

[0014] The cooling fan uses a cable with a plug as a connecting line, which is convenient for connecting the motor and the external electric socket. At the same time, the cable is arranged in the rib groove of the motor bracket, which can reduce the accelerated aging of the cable by the airflow and increase the service life of the cable. Description of the drawings:

[0015] Figure 1 It is a partial cross-sectional schematic diagram of the utility model in the front view;

[0016] Figure 2 It is a partial cross-sectional schematic diagram of the inner motor bracket of the utility model when viewed from above;

[0017] Figure 3 for Figure 2 Schematic cross-sectional view at AA in the middle.

[0018] In the figure: 1. air guide tube; 2. motor; 3. impeller; 4. motor bracket; 41. inner connecting plate; 42. outer connecting plate; 43. rib groove; 44. socket; 5. external electric socket; 6. connecting wire; 61. connecting plug; 7. cover plate; 71. cantilever buckle; 72. pressure block; 8. rubber pad; 9. protective net. Specific implementation method:

[0019] Example: See Figure 1As shown, a cooling fan for industrial transformers includes a vertical air duct 1, a motor 2 is inserted in the air duct 1, an impeller 3 is fixedly connected to the plug sleeve on the rotating shaft of the motor 2, and the impeller 3 is inserted in the upper part of the air duct 1. A plurality of motor brackets 4 are fixedly connected to the outer wall of the motor 2 housing, and the outer ends of the motor brackets 4 are fixedly connected to the inner wall of the air duct 1. The motor bracket 4 includes a longitudinal bracket plate, and an external power socket 5 is fixedly connected to the outer wall of the air duct 1. A connection wire 6 is inserted in the air duct 1, and power plugs 61 are respectively formed at both ends of the connection wire 6. The power plug 61 at one end of the connection wire 6 is plugged into the power socket of the motor 2, and the other end is plugged into the external power socket 5.

[0020] The bracket plate of the motor bracket 4 on one side of the motor 2 is formed with a transverse and inwardly recessed rib groove 43, and rectangular sockets 44 are formed on the bracket plate at both ends of the rib groove 43; the connecting wire 6 passes through the socket 44 of the motor bracket 4 and is inserted into the rib groove 43; the power plug 61 can pass through the socket 44; the motor 2 and the external power socket 5 are respectively provided with sockets matching the power plug 61.

[0021] The two ends of the upper bracket plate of the motor bracket 4 are respectively formed with an arc-shaped inner connecting plate 41 and an outer connecting plate 42, which respectively abut against the outer wall of the motor 2 housing and the inner wall of the air duct 1 and are fixed to the motor 2 and the air duct 1 respectively by bolts.

[0022] An escape socket opposite to the power plug 61 is formed on the wall of the air duct 1 on one side of the external power socket 5, and the power connection wire 6 is inserted into the escape socket of the air duct 1; the power plug 61 can pass through the escape socket and be plugged into the external power socket 5.

[0023] See Figure 2 , 3 As shown, the cross section of the rib groove 43 on the motor bracket 4 is in the shape of an isosceles trapezoid;

[0024] A cover plate 7 is provided on one side of the motor bracket 4, which is opposite to the rib groove 43 and is horizontal. The upper and lower sides of the two ends of the cover plate 7 are respectively formed with cantilever buckles 71, and the cantilever buckles 71 pass through the sockets 44 of the motor bracket 4 and are buckled on the motor bracket 4; a pressure block 72 is formed on the side wall of the cover plate 7 close to the cantilever buckle 71, and the pressure block 72 is inserted in the rib groove 43, and a rubber pad 8 is pasted and fixed on the pressure block 72; the connecting wire 6 is in the shape of a strip, and the connecting wire 6 is clamped and fixed between the bottom surface of the rib groove 43 and the rubber pad 8; in order to facilitate the electrical connection between the motor 2 and the external electric socket 5, a longer connecting wire 6 is used, which is convenient for plugging the electrical plug 61 into the motor 2 and the external electric socket 5 respectively. In order to prevent the excessively long connecting wire 6 from scattering and interfering with the impeller 3 with the airflow, the connecting wire 6 can be folded and stored and hidden in the rib groove 43. Based on the pressing of the pressing block 72 to hold the connecting wire 6, the airflow can prevent the connecting wire 6 from being pulled out of the rib groove 43. Figure 2 As shown, after the power plug 61 on the connecting wire 6 is connected, the wire body can be arranged in the manner of dotted lines in the figure, and finally the cover plate 7 is buckled by the cantilever buckle 71 to achieve the positioning of the connecting wire 6.

[0025] A circular protective net 9 is fixedly connected to the lower side of the air guide tube 1 .

[0026] The motor brackets 4 are provided in three groups, and the motor brackets 4 are evenly distributed in a ring shape around the central axis of the impeller 3 .

[0027] Working principle: The utility model is a special cooling fan for industrial transformers. The main technical points of the cooling fan are reflected in the structure of the connecting wire 6 in the air guide tube 1 and its setting structure;

[0028] 1. Both ends of the connecting wire 6 are provided with connecting plugs 61, which can be connected to the motor 2 and the external connecting socket 5 by plugging and unplugging, thereby facilitating the installation and removal of the connecting wire 6 from the motor 2 and the external connecting socket 5;

[0029] 2. The motor bracket 4 is provided with a rib groove 43 and a socket 44, and the connecting wire 6 can be arranged in the rib groove 43, so that the motor bracket 4 can protect most of the wire body of the connecting wire 6, reduce the airflow directly blowing on the connecting wire 6, and thus avoid the accelerated aging of the outer insulation of the connecting wire 6;

[0030] At the same time, when replacing the connecting wire 6, it is also convenient to remove it from the motor bracket 4 or reconnect it.

[0031] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore the scope of protection of the present invention shall be as set forth in the claims of the present invention.

Claims

1. A cooling fan for industrial transformers, comprising a vertical air guide (1), a motor (2) inserted in the air guide (1), an impeller (3) fixedly connected to a sleeve on the rotating shaft of the motor (2), the impeller (3) inserted in the upper part of the air guide (1), a plurality of motor brackets (4) fixedly connected to the outer wall of the motor (2) housing, the outer end of the motor bracket (4) fixedly connected to the inner wall of the air guide (1), the motor bracket (4) comprising a longitudinal bracket plate, characterized in that: An external power socket (5) is fixedly connected to the outer wall of the air guide tube (1), a connection wire (6) is inserted into the air guide tube (1), and power plugs (61) are respectively formed at both ends of the connection wire (6). The power plug (61) at one end of the connection wire (6) is plugged into the power socket of the motor (2), and the other end is plugged into the external power socket (5); The support plate of the motor support (4) on one side of the motor (2) is formed with a transverse and inwardly recessed rib groove (43), and rectangular sockets (44) are formed on the support plate at both ends of the rib groove (43); the connecting wire (6) passes through the socket (44) of the motor support (4) and is inserted into the rib groove (43).

2. The cooling fan for industrial transformer according to claim 1 is characterized in that: The two ends of the upper bracket plate of the motor bracket (4) are respectively formed with an arc-shaped inner connecting plate (41) and an outer connecting plate (42); the inner connecting plate (41) and the outer connecting plate (42) are respectively pressed against the outer wall of the motor (2) housing and the inner wall of the air guide tube (1) and are respectively fixedly connected to the motor (2) and the air guide tube (1) by bolts.

3. The cooling fan for industrial transformer according to claim 1 is characterized in that: A relief socket opposite to the power plug (61) is formed on the wall of the air guide tube (1) on one side of the external power socket (5), and the power connection wire (6) is inserted into the relief socket of the air guide tube (1).

4. The cooling fan for industrial transformer according to claim 1 is characterized in that: The cross section of the rib groove (43) on the motor bracket (4) is in the shape of an isosceles trapezoid; A cover plate (7) is provided on one side of the motor support (4) and is opposite to the rib groove (43) and is in a transverse direction. Cantilever buckles (71) are respectively formed on the upper and lower sides of both ends of the cover plate (7). The cantilever buckles (71) pass through the sockets (44) of the motor support (4) and are buckled on the motor support (4). A pressing block (72) is formed on the side wall of the cover plate (7) close to the cantilever buckle (71). The pressing block (72) is inserted into the rib groove (43). A rubber pad (8) is adhered and fixed to the pressing block (72). The connecting wire (6) is in the shape of a strip and is clamped and fixed between the bottom surface of the rib groove (43) and the rubber pad (8).

5. The cooling fan for industrial transformer according to claim 1 is characterized in that: A circular protective net (9) is fixedly connected to the lower side of the air guide cylinder (1).

6. The cooling fan for industrial transformer according to claim 1 is characterized in that: The motor brackets (4) are provided in three groups, and the motor brackets (4) are evenly distributed in a ring shape around the central axis of the impeller (3).

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