Dry-type transformer with moisture-proof device

Abstract

The utility model belongs to the technical field of dry-type transformers, and particularly relates to a dry-type transformer with a moisture-proof device, which is characterized by comprising an iron core, and the iron core comprises a core column formed by stacking silicon steel sheets and a winding surrounding the core column; the upper clamping piece is arranged at the top end of the iron core, and the lower clamping piece is arranged at the bottom end of the iron core; the moisture absorption device comprises a connecting frame, a lifting rod and a silica gel moisture absorption box, the connecting frame is fixedly installed on the upper clamping piece, the lifting rod is detachably installed on the connecting frame, and the silica gel moisture absorption box is connected to the bottom end of the lifting rod; the silica gel moisture absorption box is arranged between the winding and the core column, and the space between the winding and the core column in which air does not circulate is subjected to drying and moisture-proof treatment, so that the silicon steel sheets and the winding are prevented from being corroded and damaged when working in a high-temperature and humid environment for a long time; the silica gel moisture absorption box is connected through the lifting rod, the insertion depth can be freely adjusted, the device is suitable for iron cores of different sizes, the silica gel moisture absorption box is convenient to replace through the lifting rod, operation is convenient, and cost is lower.

Description

Technical Field

[0001] The utility model belongs to the technical field of dry-type transformers, and in particular relates to a dry-type transformer with a moisture-proof device. Background Art

[0002] Dry-type transformers, especially open-type dry-type transformers, are generally used in clean and dry rooms. However, under the influence of different seasons and weather, the indoor humidity is not fixed, and the components in the transformer device are prone to damage due to moisture. That is, open-type dry-type transformers require a dry environment. In a smaller space, a dehumidifier can be used to dry the entire room, but a larger space cannot be dehumidified in time. In addition, the dry-type transformer includes an iron core and a coil. The winding and the iron core form a space where air does not circulate, and the internal heat and moisture are difficult to discharge;

[0003] Therefore, a dry-type transformer with a moisture-proof device capable of keeping the core components dry is needed. Utility Model Content

[0004] In view of the problem that indoor humidity is uncontrollable due to weather and other reasons in the prior art, the utility model provides a dry-type transformer with a moisture-proof device, which can be used to ventilate the parts of the iron core that are not easily ventilated by arranging water-absorbing silica gel.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a dry-type transformer with a moisture-proof device, the key is: including

[0006] An iron core, the iron core comprising a core column of stacked silicon steel sheets and a winding surrounding the core column;

[0007] A clamp, an upper clamp installed at the top of the iron core and a lower clamp installed at the bottom of the iron core;

[0008] The desiccant device comprises a connecting frame, a lifting rod and a silica gel desiccant box. The connecting piece is fixedly mounted on the upper clamping piece, the lifting rod is detachably mounted on the connecting frame, and the silica gel desiccant box is connected to the bottom end of the lifting rod.

[0009] The desiccant device can use the lifting rod to insert the silica gel desiccant box into the position where the air is not circulating inside the winding, so there is no need to worry about the phenomenon that the humidity inside the winding is too high and difficult to ventilate and dry due to weather or other influences. In addition, the silica gel desiccant box can be taken out and replaced at any time with the help of the lifting rod after being used for a period of time. The operation is simple and convenient, and there is no need to set up a dehumidifier next to the dry-type transformer to increase costs and occupy space.

[0010] Preferably, a ventilation device is further included, the ventilation device includes a small fan and a ventilation pipe, the small fan is fixedly mounted on the clamp, and the ventilation pipe is inserted between the core column and the winding.

[0011] The ventilation device can further ventilate the interior of the winding and increase the air outflow in the internal space of the winding and the core column, which is not only beneficial to the heat dissipation of the seriously heated parts, but also can make the interior of the winding ventilated and dry.

[0012] Preferably, the lifting rod has the freedom to be lifted and lowered on the connecting frame, the top of the silica gel desiccant box is provided with a threaded sleeve, the interior of which is provided with an internal thread, and the bottom of the lifting rod is provided with an external thread that matches the internal thread of the threaded sleeve.

[0013] The lifting rod can be raised and lowered freely, which is suitable for iron cores of different heights. It is also more convenient to replace the silicone desiccant box. The silicone desiccant box is threadedly connected to the lifting rod, making replacement simple and convenient.

[0014] Preferably, the silica gel moisture absorption box is a cylindrical structure, and ventilation holes are opened on the cylinder wall, and water-absorbing silica gel is placed inside.

[0015] The cylindrical structure of the silica gel desiccant box is more convenient to place and is more suitable for the retention space between the winding and the core column. The ventilation holes can allow the air in the internal space of the winding to enter the silica gel desiccant box and absorb moisture through the water-absorbing silica gel.

[0016] Preferably, the small fan is threadedly connected to the upper clamp by means of screws, and a gasket is provided between the small fan and the upper clamp.

[0017] A gasket is arranged between the small fan and the upper clamp. The gasket is made of elastic material and has a buffering effect, thereby preventing the vibration of the small fan from affecting the clamp and also reducing the impact of the vibration of the core silicon steel sheet on the small fan.

[0018] Preferably, the number of the moisture absorption devices and the number of ventilation pipes are consistent with the number of windings.

[0019] Preferably, the ventilation pipe is made of a flexible material, and the connecting frame further includes a connecting ring, and the ventilation pipe is fixed in place by means of the connecting ring.

[0020] Preferably, a filter screen is provided at the vent of the small fan.

[0021] The beneficial effects of the utility model are as follows: open dry-type transformers are generally used indoors, and the indoor humidity is not fixed. Affected by weather and seasons, the space between the core column and the winding of the dry-type transformer is difficult to ventilate. Once affected by a humid environment, it is difficult to dry. By arranging a silica gel desiccant box between the winding and the core column, the space between the winding and the core column where air is not circulated is dried and moisture-proofed, thereby preventing the silicon steel sheet and the winding from being corroded and damaged due to long-term operation in a high temperature and humid environment; and the silica gel desiccant box is connected by a lifting rod, and the insertion depth can be freely adjusted to be suitable for iron cores of different sizes. The lifting rod also facilitates the replacement of the silica gel desiccant box, which is easy to operate and has lower cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the structure of a dry-type transformer with a moisture-proof device in an embodiment;

[0023] Figure 2 Schematic diagram of the explosion structure of a dry-type transformer with a moisture-proof device in the embodiment;

[0024] Figure 3 Schematic diagram of the structure of the moisture absorption device of the dry-type transformer with moisture-proof device in the embodiment;

[0025] Figure 4 It is a schematic diagram of the explosion structure of the moisture absorption device of the dry-type transformer with the moisture-proof device in the embodiment;

[0026] Figure 5 Schematic diagram of the structure of the connecting frame of the dry-type transformer with a moisture-proof device in the embodiment;

[0027] Figure 6 It is a schematic structural diagram of a silica gel moisture absorption box of a dry-type transformer with a moisture-proof device in an embodiment;

[0028] Figure 7 It is a structural schematic diagram of a small fan of a dry-type transformer with a moisture-proof device in an embodiment;

[0029] In the figure: 1. iron core; 101. core column; 102. winding; 2. clamp; 201. upper clamp; 202. lower clamp; 3. desiccant device; 301. connecting frame; 302. lifting rod; 303. silica gel desiccant box; 304. ventilation hole; 305. connecting ring; 4. ventilation device; 401. small fan; 402. ventilation pipe; 403. filter; 5. gasket; 6. threaded sleeve; 601. internal thread; 602. external thread. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0031] Specific implementation examples Figure 1 , 2 , 3, 4, 5 and 6, the dry-type transformer with moisture-proof device, the key is: comprising an iron core 1, the iron core 1 comprising a core column 101 of stacked silicon steel sheets and a winding 102 surrounding the core column 101;

[0032] Clamp 2, an upper clamp 201 installed at the top of the core 1 and a lower clamp 202 installed at the bottom of the core 1;

[0033] The desiccant device 3 comprises a connecting frame 301 , a lifting rod 302 and a silica gel desiccant box 303 . The connecting member is fixedly mounted on the upper clamp 201 , the lifting rod 302 is detachably mounted on the connecting frame 301 , and the silica gel desiccant box 303 is connected to the bottom end of the lifting rod 302 .

[0034] like Figure 1 , 2 As shown in FIG. 7 , a ventilation device 4 is also included. The ventilation device 4 includes a small fan 401 and a ventilation pipe 402 . The small fan 401 is fixedly mounted on the clamp 2 , and the ventilation pipe 402 is inserted between the core column 101 and the winding 102 .

[0035] like Figure 1 , 2 As shown in , 3, 4, 5 and 6, the lifting rod 302 has the freedom to rise and fall on the connecting frame 301, the top of the silica gel desiccant box 303 is provided with a threaded sleeve 6, the inside of which is provided with an internal thread 601, and the bottom of the lifting rod 302 is provided with an external thread 602 that matches the internal thread 601 of the threaded sleeve 6.

[0036] like Figure 1 , 2 As shown in Figures 3, 4, 5 and 6, the silica gel moisture absorption box 303 is a cylindrical structure, and a ventilation hole 304 is opened on the cylinder wall, and water-absorbing silica gel is placed inside.

[0037] like Figure 1 , 2 As shown in FIG. 7 , the small fan 401 is threadedly connected to the upper clamp 201 by means of screws, and a gasket 5 is provided between the small fan 401 and the upper clamp 201 .

[0038] like Figure 1 , 2 As shown, the number of the moisture absorption devices 3 and the number of the ventilation pipes 402 are consistent with the number of the windings 102 .

[0039] like Figure 1 , 2 As shown in , 3, 4, 5 and 7, the ventilation pipe 402 is made of flexible material, and the connecting frame 301 also includes a connecting ring 305, and the ventilation pipe 402 is fixed by means of the connecting ring 305.

[0040] A filter screen 403 is provided at the ventilation opening of the small fan 401 .

[0041] Working principle: The connecting frame 301 is fixedly connected to the upper clamp 202 by screws, and the lifting rod 302 is inserted into the connecting frame 301. The up and down travel is limited by the connecting frame 301. The lifting rod 302 is moved to the highest point. The silica gel desiccant box 303 is threadedly connected to the lifting rod 302 through the threaded sleeve 6. The lifting rod 302 equipped with the silica gel desiccant box 303 is inserted between the winding 102 and the core column 101; the small fan 401 is fixedly installed on the upper clamp 102 with a gasket 5, and the ventilation pipe 402 is inserted between the winding 102 and the core column 101 after passing through the connecting ring 305 of the connecting frame 301. The ventilation pipe 402 can continuously pass cold air between the winding 102 and the core column 101, accelerate air circulation, and take away the heat between the winding 102 and the core column 101 and the moisture in the air. The connecting ring 305 can limit the ventilation pipe 402 and prevent the flexible ventilation pipe 305 from falling.

[0042] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. Dry-type transformer with moisture-proof device, characterized in that: include An iron core (1), the iron core (1) comprising a core column (101) of stacked silicon steel sheets and a winding (102) surrounding the core column (101); A clamp (2), an upper clamp (201) mounted on the top of the iron core (1) and a lower clamp (202) mounted on the bottom of the iron core (1); The moisture absorption device (3) comprises a connecting frame (301), a lifting rod (302) and a silica gel moisture absorption box (303), wherein the connecting member is fixedly mounted on the upper clamping member (201), the lifting rod (302) is detachably mounted on the connecting frame (301), and the silica gel moisture absorption box (303) is connected to the bottom end of the lifting rod (302).

2. The dry-type transformer with moisture-proof device according to claim 1, characterized in that: It also includes a ventilation device (4), the ventilation device (4) including a small fan (401) and a ventilation pipe (402), the small fan (401) is fixedly mounted on the clamp (2), and the ventilation pipe (402) is inserted between the core column (101) and the winding (102).

3. The dry-type transformer with moisture-proof device according to claim 1, characterized in that: The lifting rod (302) has the freedom to be lifted and lowered on the connecting frame (301); the top of the silica gel desiccant box (303) is provided with a threaded sleeve (6) with an internal thread (601) arranged inside; the bottom of the lifting rod (302) is provided with an external thread (602) matching the internal thread (601) of the threaded sleeve (6).

4. The dry-type transformer with moisture-proof device according to claim 3, characterized in that: The silica gel moisture absorption box (303) is a cylindrical structure, and a ventilation hole (304) is opened on the cylinder wall, and water-absorbing silica gel is placed inside.

5. The dry-type transformer with moisture-proof device according to claim 2, characterized in that: The small fan (401) is threadedly connected to the upper clamp (201) by means of screws, and a gasket (5) is provided between the small fan (401) and the upper clamp (201).

6. The dry-type transformer with moisture-proof device according to claim 1, characterized in that: The number of the moisture absorption devices (3) and the number of the ventilation pipes (402) are consistent with the number of the windings (102).

7. The dry-type transformer with moisture-proof device according to claim 2, characterized in that: The ventilation pipe (402) is made of a flexible material, and the connecting frame (301) further comprises a connecting ring (305), and the ventilation pipe (402) is fixed in position by means of the connecting ring (305).

8. The dry-type transformer with moisture-proof device according to claim 2, characterized in that: A filter screen (403) is provided at the ventilation opening of the small fan (401).

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