Dry-type power transformer

Abstract

The utility model discloses a dry-type power transformer which comprises a box body, a dry-type transformer and a cooling assembly are installed in the box body, an installation block is installed at the position, located at the bottom of the dry-type transformer, in the box body, an installation cavity is formed in one side of the installation block in a penetrating mode, and long rods are symmetrically installed at one end in the installation cavity. Two long rods are symmetrically installed at one end of the interior of the mounting cavity, short rods are symmetrically installed at the other end of the interior of the mounting cavity, a supporting block is jointly installed at the tops of the two long rods and the tops of the two short rods, liquid discharging pipes are symmetrically installed at one end of the exterior of the supporting block in a penetrating mode, and one ends of the two liquid discharging pipes penetrate through one side of the box body and extend to the exterior of the box body. When the dry-type transformer is cooled through the cooling assembly, water drops formed on the surface of the cooling pipe can be collected and prevented from dripping on blades of the fan, so that the risk that the fan is damaged due to impact of the water drops is greatly reduced, and the service life of the fan is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of dry-type power transformers, in particular to a dry-type power transformer. Background Art

[0002] A dry-type power transformer refers to a transformer whose core and winding are not immersed in insulating oil. The cooling methods are divided into natural air cooling and forced air cooling. When the transformer is naturally cooled, it can operate continuously for a long time at the rated capacity. When the transformer is forced to cool, the output capacity of the transformer can be increased by 50%, which is suitable for intermittent overload operation or emergency overload operation. China has authorized a utility model patent (publication number: CN219066567U) to propose a dry-type power transformer. The device uses cooling pipes, heat exchangers, delivery pipes, water tanks and water pumps to achieve the recycling of coolant, continuously provide cold air, and facilitate the surface heat dissipation of the transformer body.

[0003] When the above device is in use, the water pump can absorb the internal coolant of the water tank, and then transport it to the inside of the cooling pipe, and start the blowing fan. The blowing fan blows the cold air emitted from the surface of the cooling pipe to the surface of the transformer body through the air outlet to achieve heat dissipation. However, since the low temperature on the surface of the cooling pipe encounters hot air, water droplets will form on the surface of the cooling pipe. When the water droplets formed on the surface of the cooling pipe drip onto the fan, it will cause the fan blades to be unbalanced, thereby affecting the working efficiency of the fan. In addition, continuous water droplet impact will damage the fan and shorten its service life. Therefore, a dry-type power transformer is proposed to address the above problems. Summary of the invention

[0004] The utility model aims to solve the problem in the prior art that water droplets are formed on the surface of the cooling pipe when the low temperature on the surface of the cooling pipe meets hot air. When the water droplets formed on the surface of the cooling pipe drip onto the fan, it will cause the fan blades to be unbalanced, thereby affecting the working efficiency of the fan. A dry-type power transformer is proposed to solve the problem.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A dry-type power transformer comprises a box body, wherein the dry-type transformer and a cooling assembly are installed inside the box body, a mounting block is installed inside the box body at the bottom of the dry-type transformer, a mounting cavity is penetrated through one side of the mounting block, long rods are symmetrically installed at one end inside the mounting cavity, short rods are symmetrically installed at the other end inside the mounting cavity, a supporting block is commonly installed on the top of the two long rods and the two short rods, drainage pipes are symmetrically penetrated through one end outside the supporting block, one end of the two drainage pipes penetrates one side of the box body and extends to the outside of the box body, a cooling pipe is installed on the top of the supporting block, and both ends of the cooling pipe are respectively connected to the cooling assembly.

[0007] Preferably, a plurality of short columns are provided at the bottom of the cooling tube, and the bottoms of the plurality of short columns are respectively connected to the supporting blocks.

[0008] Preferably, the cross-sectional projection of the support block is in the shape of a semicircular ring, and the drain pipe is obliquely installed on the support block.

[0009] Preferably, the cooling assembly includes a water pump, a water tank and a heat exchanger, one end of the cooling pipe is connected to the water pump, the other end of the water pump is connected to the water tank, one end of the water tank is connected to the heat exchanger, and one end of the heat exchanger is connected to the other end of the cooling pipe.

[0010] Preferably, fans are installed at both ends of the installation cavity.

[0011] Preferably, heat dissipation windows are respectively provided on corresponding sides of the box body, and a protective net is provided at one end of the drain pipe located outside the box body.

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model, through the structural design of the long rod, the short rod and the support block, can collect water droplets formed on the surface of the cooling pipe when the dry-type transformer is cooled by the cooling assembly to prevent them from dripping onto the blades of the fan, which greatly reduces the risk of the fan being damaged by the impact of water droplets, thereby extending the service life of the fan.

[0014] 2. The utility model adopts the structural design of the long rod, the short rod, the support block and the drain pipe. Since the length of the long rod is longer than the short rod, the support block is in an inclined state after installation, so that the water droplets falling on the cooling pipe will gather to one side, and then it is convenient to quickly discharge the water droplets collected on the support block out of the box through the drain pipe, thereby ensuring the dryness of the internal environment of the box and avoiding interference with the normal operation of the dry-type transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure proposed by the utility model;

[0016] Figure 2 This is a rear view structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the installation structure of the cooling pipe proposed by the utility model;

[0018] Figure 4 The utility model proposed Figure 3 Schematic diagram of the local enlarged structure at point A in the middle.

[0019] In the figure: 1. Box body; 2. Dry-type transformer; 3. Mounting block; 301. Mounting cavity; 4. Long rod; 5. Short rod; 6. Support block; 7. Drain pipe; 8. Cooling pipe; 9. Cooling assembly; 10. Fan. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-4 A dry-type power transformer comprises a box body 1, and heat dissipation windows are respectively provided on the corresponding two sides of the box body 1, and a box door is hinged on the box body 1 (not shown in the figure), a dry-type transformer 2 and a cooling assembly 9 are installed inside the box body 1, a mounting block 3 is installed at the bottom of the dry-type transformer 2 inside the box body 1, a mounting cavity 301 is provided through one side of the mounting block 3, and fans 10 are respectively installed at both ends of the mounting cavity 301, a long rod 4 is symmetrically installed at one end of the mounting cavity 301, and a short rod 5 is symmetrically installed at the other end of the mounting cavity 301, a support block 6 is installed on the top of the two long rods 4 and the two short rods 5, and a drain pipe 7 is symmetrically and obliquely penetrated at one end of the outer side of the support block 6, and a protective net is provided at the end of the drain pipe 7 located outside the box body 1, and one end of the two drain pipes 7 penetrates one side of the box body 1 and Extending to the outside of the box body 1, a cooling pipe 8 is installed on the top of the support block 6, and a plurality of short columns are provided at the bottom of the cooling pipe 8, and the bottoms of the plurality of short columns are respectively connected to the support block 6. The cross-sectional projection of the support block 6 is a semicircular ring. The two ends of the cooling pipe 8 are respectively connected to the cooling component 9. The cooling component 9 includes a water pump, a water tank and a heat exchanger. One end of the cooling pipe 8 is connected to the water pump, and the other end of the water pump is connected to the water tank through a pipe. One end of the water tank is connected to the heat exchanger through a pipe, and one end of the heat exchanger is connected to the other end of the cooling pipe 8. Coolant is provided in the water tank. The material of the cooling pipe 8 is the same as that in the prior art (publication number: CN219066567U), and the working mode of the cooling component 9 is the same as the cooling and heat dissipation treatment method in the prior art (publication number: CN219066567U), which will not be elaborated here.

[0022] The use method and advantages of the utility model: When the dry-type power transformer is in use, the working process is as follows:

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, when using the present device, firstly, the electrical equipment in the present device is connected to an external power supply and switch. The working process of heat dissipation and cooling of the dry-type transformer 2 by the cooling component 9 in the present device is the same as that in the prior art (publication number: CN219066567U), and no further details will be given here. When the coolant flows inside the cooling pipe 8, the surface of the cooling pipe 8 will emit cold air. When the cold air meets the hot air, water droplets will appear on the surface of the cooling pipe 8. The water droplets will drip onto the support block 6 along the outer wall of the cooling pipe 8 to prevent them from dripping onto the blades of the fan 10, which greatly reduces the risk of the fan 10 being damaged by the impact of water droplets, thereby extending the service life of the fan 10. Since the support block 6 is installed as a whole at an angle, the collected water droplets will gather toward one end of the drain pipe 7 and be discharged outside the box body 1 through the drain pipe 7, thereby ensuring the dryness of the internal environment of the box body 1 and avoiding interference with the normal operation of the dry-type transformer 2.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dry-type power transformer, comprising a housing (1), wherein a dry-type transformer (2) and a cooling assembly (9) are installed inside the housing (1), characterized in that: A mounting block (3) is installed inside the box (1) at the bottom of the dry-type transformer (2); a mounting cavity (301) is penetrated through one side of the mounting block (3); a long rod (4) is symmetrically installed at one end inside the mounting cavity (301); a short rod (5) is symmetrically installed at the other end inside the mounting cavity (301); a support block (6) is installed on the top of the two long rods (4) and the two short rods (5); a drainage pipe (7) is symmetrically penetrated through one end outside the support block (6); one end of the two drainage pipes (7) penetrates one side of the box (1) and extends to the outside of the box (1); a cooling pipe (8) is installed on the top of the support block (6); and both ends of the cooling pipe (8) are respectively connected to a cooling assembly (9).

2. A dry-type power transformer according to claim 1, characterized in that: A plurality of short columns are provided at the bottom of the cooling pipe (8), and the bottoms of the plurality of short columns are respectively connected to the supporting blocks (6).

3. A dry-type power transformer according to claim 1, characterized in that: The cross-sectional projection of the support block (6) is in the shape of a semicircular ring, and the liquid discharge pipe (7) is obliquely mounted on the support block (6).

4. A dry-type power transformer according to claim 1, characterized in that: The cooling assembly (9) comprises a water pump, a water tank and a cold heat exchanger, one end of the cooling pipe (8) is connected to the water pump, the other end of the water pump is connected to the water tank, one end of the water tank is connected to the cold heat exchanger, and one end of the cold heat exchanger is connected to the other end of the cooling pipe (8).

5. A dry-type power transformer according to claim 1, characterized in that: Fans (10) are respectively installed at two ends inside the installation cavity (301).

6. A dry-type power transformer according to claim 1, characterized in that: Heat dissipation windows are respectively provided through the corresponding two sides of the box body (1), and a protective net is provided at one end of the drain pipe (7) located outside the box body (1).

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