Transformer test equipment convenient for heat dissipation

Abstract

The utility model relates to the field of transformer testing, in particular to transformer testing equipment convenient for heat dissipation, which comprises a load frame, a box body and a fan, the load frame comprises a heat dissipation disc, a fixing frame and a jack, the box body is of a cuboid structure, a cavity is arranged in the box body, the opening direction is the front side, the load frame is arranged in the cavity of the box body, and the fan is arranged in the box body. The fan is installed behind the box body and connected with the load frame, the fixing frames are installed on the two sides of the load frame, the heat dissipation disc is supported by the fixing frames and connected with the load frame, the insertion hole is formed in the surface of the load frame, the heat dissipation disc comprises a ventilation hole, a filter screen and a pull ring, the ventilation hole is formed in the heat dissipation disc, and an opening of the ventilation hole faces the insertion hole. According to the utility model, the fan is used for carrying out air cooling on the heat dissipation discs, the test precision is ensured not to be influenced, the fixed frame is used for adjusting the distance between the plurality of heat dissipation discs, resistor elements with various sizes are convenient to install, and the louver is used for keeping the ventilation of the box body and simultaneously facilitating the observation of the operation condition of the resistor.

Description

Technical Field

[0001] The utility model relates to the field of transformer testing, in particular to transformer testing equipment which is convenient for heat dissipation. Background Art

[0002] Transformer testing refers to the use of external resistors connected to the transformer to test the current and voltage of the transformer. Since various types of resistor components are required during the test, general test equipment uses a load box to install various resistors for testing. The resistors are connected to the transformer from the inside of the load box through cables. During the test, various messy cables will affect the replacement of resistors and slow down the test efficiency. At the same time, the resistors will generate a lot of heat. The heat accumulation in the load box will affect the test accuracy. Therefore, a test equipment that is easy to dissipate heat is needed to ensure the accuracy and efficiency of the test.

[0003] Chinese patent CN210401550U discloses a transformer load testing device, in which a plurality of load blocks are arranged in the inner cavity of the test cabinet, a plurality of wire outlet holes are evenly opened on the top of the test cabinet, a junction box with a top opening is arranged on the top of the inner cavity of the test cabinet, a connecting piece is arranged along the periphery of the open end of the junction box, the connecting piece is fixed to the junction box by bolts, the cables on the load blocks pass through the junction box, and extend out of the test cabinet from the wire outlet holes, a wire inlet is arranged at the bottom of the junction box for the cables to extend into, and wire outlets are arranged on the four side walls of the junction box for the cables to extend out; the technical effect is: the cables can be centrally arranged through the junction box, reducing the possibility of the cables being scattered or entangled inside the test cabinet.

[0004] There are still several points for improvement in the above scheme: the resistor inside the box needs to be pre-fixed and installed and cannot be replaced, and various types of tests cannot be performed; when the box is closed, the operating status of the internal resistor element cannot be observed in time. Utility Model Content

[0005] In order to solve the problems of the prior art, the utility model provides a transformer testing device that is easy to dissipate heat, including a load frame, a box body and a fan. The load frame includes a heat dissipation plate, a fixing frame and a socket. The box body is a rectangular parallelepiped structure. A cavity is provided inside the box body and the front side is the opening. The load frame is installed in the cavity of the box body. The fan is installed at the back of the box body and connected to the load frame. The fixing frame is installed at both sides of the load frame. The heat dissipation plate is supported by the fixing frame and connected to the load frame. The socket is arranged on the surface of the load frame.

[0006] Preferably, the heat sink includes ventilation holes, filters and pull rings, the ventilation holes are arranged inside the heat sink with their openings facing the jacks, the filter array is arranged on the surface of the heat sink, and the pull ring is arranged on the heat sink and away from the load frame.

[0007] Preferably, the fixing frame includes a mounting bar, a transverse groove and a latch, the mounting bar is arranged on the four corners of the box body, the latch passes through the side wall of the fixing frame and the mounting bar to connect the fixing frame to the mounting bar, and the transverse groove is arranged on the plane of the fixing frame.

[0008] Preferably, the transverse groove includes a pulley and a roller, the pulley array is arranged in the transverse groove, and the roller is installed on the side wall of the fixing frame.

[0009] Preferably, the box includes support columns, door panels, wire harness holes and slide grooves, the support columns are installed at the four corners of the box, the door panels are arranged on the front of the box, the wire harness holes are arranged on the sides of the box, and the slide grooves are arranged on the back of the box.

[0010] Preferably, the door panel includes a shutter, a handle and a rotating shaft, the shutter is arranged at the center of the door panel, the rotating shaft is arranged on the side of the door panel and is rotatably connected to the support column, and the handle is arranged on the door panel at a position away from the rotating shaft.

[0011] Preferably, the shutter comprises blades, a lifting frame and a connecting rod, the blade array is arranged in the shutter, the connecting rod passes through the blades, and the lifting frame is perpendicular to the connecting rod and connected to a plurality of connecting rods.

[0012] Preferably, the fan comprises a fan, a connecting pipe and a joint, the fan is installed in the fan, one end of the connecting pipe is connected to the fan, and the other end is provided with a joint and inserted into the socket.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model uses a fan to cool the heat sink to ensure that the test accuracy is not affected. Specifically, the machine uses an external power supply to blow air into the box. The fan rotates to send the air outside the box into the heat sink through the connecting pipe. The cold air absorbs heat and is discharged by the fan on the other side.

[0015] 2. The utility model uses a fixing frame to adjust the spacing between multiple heat sinks, which is convenient for installing resistor elements of various sizes. Specifically, the mounting strips and latches are used to adjust the specific position of the fixing frame in the box and adjust the spacing between multiple fixing frames at the same time. Since the resistor elements installed on the heat sinks are of different sizes, the space allocation inside the box needs to be adjusted according to actual needs.

[0016] 3. The utility model uses shutters to maintain ventilation of the box while facilitating observation of the operating conditions of the resistor. Specifically, the shutters are used to increase the ventilation area inside the box while facilitating observation of the working conditions of each resistor element inside the box. When the blades are parallel to the ground, the specific conditions inside the box can be observed from the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a transformer testing device that facilitates heat dissipation.

[0018] Figure 2 A perspective view of a transformer test device for heat dissipation.

[0019] Figure 3 A three-dimensional diagram of a load frame in a transformer test device for facilitating heat dissipation.

[0020] Figure 4 A three-dimensional diagram of a heat sink in a transformer testing device for facilitating heat dissipation.

[0021] Figure 5 A three-dimensional diagram of a fixing frame in a transformer testing device for facilitating heat dissipation.

[0022] Figure 6 A three-dimensional diagram of a door panel in a transformer testing device for facilitating heat dissipation.

[0023] Figure 7 A three-dimensional diagram of the shutters in a transformer test device for facilitating heat dissipation.

[0024] Figure 8 It is a three-dimensional diagram of the fan in the transformer test equipment for easy heat dissipation.

[0025] The numbers in the figure are: 1, load frame; 2, heat sink; 21, ventilation hole; 22, filter; 23, pull ring; 3, fixing frame; 31, mounting strip; 32, horizontal groove; 321, pulley; 322, roller; 33, latch; 4, socket; 5, box; 51, support column; 52, door panel; 61, shutter; 611, blade; 612, lifting frame; 613, connecting rod; 62, handle; 63, rotating shaft; 53, wiring hole; 54, slide groove; 7, fan; 71, fan; 72, connecting pipe; 73, connector. DETAILED DESCRIPTION

[0026] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] See also Figures 1 to 8 As shown, a transformer testing device that is easy to dissipate heat includes a load frame 1, a box 5 and a fan 7. The load frame 1 includes a heat sink 2, a fixing frame 3 and a socket 4. The box 5 is a rectangular parallelepiped structure. A cavity is provided inside the box 5 and the opening faces the front. The load frame 1 is installed in the cavity of the box 5. The fan 7 is installed at the back of the box 5 and connected to the load frame 1. The fixing frame 3 is installed at both sides of the load frame 1. The heat sink 2 is supported by the fixing frame 3 and connected to the load frame 1. The socket 4 is arranged on the surface of the load frame 1.

[0028] The device installs the heat sink 2 by connecting the load frame 1 with the fixing frame 3. Various types of resistors are installed on the heat sink 2 for testing the current and voltage of the transformer. The box 5 is used to protect the resistor elements on the heat sink 2 to prevent floating dust and falling dust from affecting the detection effect of the resistor. When the resistor is tested for current and voltage, a large amount of heat is generated. The fan 7 continuously cools the heat sink 2 through the jack 4 to maintain the accuracy of the test.

[0029] See also Figure 2 to Figure 4 As shown, the heat sink 2 includes ventilation holes 21, filter screens 22 and pull rings 23. The ventilation holes 21 are arranged inside the heat sink 2 with their openings facing the socket 4. The filter screens 22 are arranged in an array on the surface of the heat sink 2. The pull ring 23 is arranged on the heat sink 2 and is located away from the load frame 1.

[0030] The ventilation hole 21 is bent through the center of the entire heat sink 2, which increases the contact path between the cold air and the heat sink 2 while improving the heat dissipation effect. The filter 22 is used to reduce the closed contact surface between the resistor element and the heat sink 2. The resistor in the heat sink 2 can be cooled from the bottom of the heat sink 2 through the filter 2. The pull ring 23 is used to pull the heat sink 2 to replace it.

[0031] See also Figure 2 to Figure 5 As shown, the fixing frame 3 includes a mounting bar 31, a transverse groove 32 and a latch 33. The mounting bar 31 is arranged on the four corners of the box body 5. The latch 33 passes through the side wall of the fixing frame 3 and the mounting bar 31 to connect the fixing frame 3 to the mounting bar 31. The transverse groove 32 is arranged on the plane of the fixing frame 3.

[0032] The mounting strip 31 and the latch 33 are used to adjust the specific position of the fixing bracket 3 in the box 5, and to adjust the spacing between multiple fixing brackets 3. Since the resistor elements installed on the heat sink 2 are of different sizes, the space allocation inside the box 5 needs to be adjusted according to actual needs. The transverse groove 32 is used to support the entire heat sink 2.

[0033] See also Figure 5 As shown, the transverse groove 32 includes a pulley 321 and a roller 322 . The pulley 321 is arranged in an array in the transverse groove 32 , and the roller 322 is installed on the side wall of the fixing frame 3 .

[0034] Since the function of the heat sink 2 is to install resistance elements, the heat sink 2 needs to be removed from the fixing frame 3 when replacing different types of resistance elements. The pulley 321 is used to reduce the friction between the bottom of the heat sink 2 and the fixing frame 3 during dragging, thereby increasing the service life of both. At the same time, the roller 322 is provided to ensure that when the heat sink 2 is installed, the ventilation hole 21 on the heat sink 2 can be aligned with the socket 4.

[0035] See also Figure 1 to Figure 6As shown, the box body 5 includes support columns 51, a door panel 52, a wiring hole 53 and a slide groove 54. The support columns 51 are installed at the four corners of the box body 5, the door panel 52 is arranged on the front of the box body 5, the wiring hole 53 is arranged on the side of the box body 5, and the slide groove 54 is arranged on the back of the box body 5.

[0036] The support column 51 is fixedly connected to the mounting strip 31 on the fixing frame 3, so that the entire fixing frame 3 can be adjusted on the support column 51. The door panel 52 is rotatably installed at the opening of the box body 5 for installing and removing the heat sink 2. The wiring hole 53 is used to connect the wiring of the resistor element with the transformer. The slide groove 54 is used to ensure that the fan 7 can be connected to the heat sink 2.

[0037] See also Figure 6-7 As shown, the door panel 52 includes a shutter 61, a handle 62 and a rotating shaft 63. The shutter 61 is arranged at the center of the door panel 52, the rotating shaft 63 is arranged on the side of the door panel 52 and is rotatably connected to the support column 51, and the handle 62 is arranged on the door panel 52 at a position away from the rotating shaft 63.

[0038] The rotating shaft 63 enables the door panel 52 to rotate with the box body 5 , the shutter 61 is used to increase the ventilation area inside the box body 5 while facilitating observation of the working conditions of each resistor element inside the box body 5 , and the handle 62 provides a force point for pulling the door panel 52 .

[0039] See also Figure 7 As shown, the shutter 61 includes blades 611 , a bracket 612 and connecting rods 613 . The blades 611 are arranged in an array in the shutter 61 . The connecting rods 613 pass through the blades 611 . The bracket 612 is perpendicular to the connecting rods 613 and connected to the plurality of connecting rods 613 .

[0040] The function of the blades 611 is to block most of the floating dust from entering the interior of the box 5 while maintaining a certain ventilation capacity of the box 5. The lifting frame 612 drags the connecting rod 613 to control the opening and closing of the shutters 61. When opened, the blades 611 are parallel to the ground, and the specific conditions inside the box 5 can be observed from the outside. When closed, the blades 611 form an angle with the ground, maintaining ventilation while blocking floating dust.

[0041] See also Figure 8 As shown, the fan 7 includes a fan 71, a connecting pipe 72 and a joint 73. The fan 71 is installed in the fan 7. One end of the connecting pipe 72 is connected to the fan 71, and the other end is provided with a joint 73 and inserted into the socket 4.

[0042] The fan 7 uses an external power supply to blow air into the box body 5. The fan 71 rotates to send the air outside the box body 5 into the heat dissipation plate 2 through the connecting pipe 72. After the cold air absorbs heat, it is discharged by the fan 7 on the other side, forming a good heat dissipation effect.

[0043] The above embodiments only express one or several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.

Claims

1. A transformer testing device that facilitates heat dissipation, comprising a load frame (1), a box (5) and a fan (7); It is characterized in that The load frame (1) comprises a heat sink (2), a fixing frame (3) and a socket (4); the box (5) is a rectangular parallelepiped structure; a cavity is provided inside the box (5) and the front side is the opening; the load frame (1) is installed in the cavity of the box (5); a fan (7) is installed at the back of the box (5) and connected to the load frame (1); the fixing frame (3) is installed at both sides of the load frame (1); the heat sink (2) is supported by the fixing frame (3) and connected to the load frame (1); and the socket (4) is arranged on the surface of the load frame (1).

2. A transformer testing device for heat dissipation according to claim 1, characterized in that: The heat sink (2) comprises a ventilation hole (21), a filter (22) and a pull ring (23); the ventilation hole (21) is arranged inside the heat sink (2) with its opening facing the insertion hole (4); the filter (22) is arranged in an array on the surface of the heat sink (2); and the pull ring (23) is arranged on the heat sink (2) and is located away from the load frame (1).

3. The transformer testing device for facilitating heat dissipation according to claim 1, characterized in that: The fixing frame (3) comprises a mounting strip (31), a transverse groove (32) and a latch (33); the mounting strip (31) is arranged on the four corners of the box body (5); the latch (33) passes through the side wall of the fixing frame (3) and the mounting strip (31) to connect the fixing frame (3) to the mounting strip (31); and the transverse groove (32) is arranged on the plane of the fixing frame (3).

4. The transformer testing device for facilitating heat dissipation according to claim 3, characterized in that: The transverse groove (32) comprises a pulley (321) and a roller (322); the pulley (321) is arranged in an array in the transverse groove (32); and the roller (322) is installed on the side wall of the fixing frame (3).

5. The transformer testing device for facilitating heat dissipation according to claim 1, characterized in that: The box body (5) comprises a support column (51), a door panel (52), a cable hole (53) and a slide groove (54); the support column (51) is installed at the four corners of the box body (5); the door panel (52) is arranged on the front of the box body (5); the cable hole (53) is arranged on the side of the box body (5); and the slide groove (54) is arranged on the back of the box body (5).

6. The transformer testing device for facilitating heat dissipation according to claim 5, characterized in that: The door panel (52) comprises a shutter (61), a handle (62) and a rotating shaft (63); the shutter (61) is arranged at the center of the door panel (52); the rotating shaft (63) is arranged on the side of the door panel (52) and is rotatably connected to the support column (51); and the handle (62) is arranged on the door panel (52) at a position away from the rotating shaft (63) on one side.

7. The transformer testing device for facilitating heat dissipation according to claim 6, characterized in that: The shutter (61) comprises blades (611), a lifting frame (612) and connecting rods (613). The blades (611) are arranged in an array in the shutter (61), the connecting rods (613) pass through the blades (611), and the lifting frame (612) is perpendicular to the connecting rods (613) and connected to a plurality of connecting rods (613).

8. The transformer testing device for facilitating heat dissipation according to claim 1, characterized in that: The fan (7) comprises a fan (71), a connecting pipe (72) and a joint (73). The fan (71) is installed in the fan (7), one end of the connecting pipe (72) is connected to the fan (71), and the other end is provided with a joint (73) and inserted into the socket (4).

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