Damp-proof and dust-proof small transformer

Abstract

The utility model discloses a moisture-proof and dust-proof small-sized transformer, which belongs to the technical field of small-sized transformers and comprises a small-sized transformer body, double-layer hollow dust-proof covers are arranged on two sides of the small-sized transformer body, and the double-layer hollow dust-proof covers are rotatably connected with the small-sized transformer body through hinges. According to the small transformer, the moisture absorption assembly is arranged, the moisture absorption efficiency is reduced when a replaceable moisture absorption cotton plate is used for a long time, spring limiting pins are poked towards the two sides, a push rod moves back under the elastic force action of a reset spring, and the push rod pushes a moisture absorption cotton plate frame to extend out of the through grooves; the replaceable moisture-absorbing cotton plate which absorbs moisture is taken down from the moisture-absorbing cotton plate frame, the dry replaceable moisture-absorbing cotton plate is inserted into the moisture-absorbing cotton plate frame, then the moisture-absorbing cotton plate frame is pressed and pushed into the through groove, the two ends of the moisture-absorbing cotton plate frame are limited through pin heads of the spring limiting pins, the moisture-absorbing cotton plate frame is prevented from popping up, and the replaceable moisture-absorbing cotton plate is convenient to replace and saves time and labor.

Description

Technical Field

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

[0002] Small transformers mainly refer to transformers below 20kV·A for single-phase and 50kV·A for three-phase. They are characterized by small size, low cost and less wires. The load rate and utilization rate of small transformers are generally low. The inductive loads they carry are generally not capacitively compensated. Small transformers are a common equipment in factory electrical control systems. With the large-scale application of electronic components in power plant control, monitoring and automatic circuits, the application of small transformers is becoming more and more extensive.

[0003] Chinese patent application No. 202222361332.5 discloses a moisture-proof and dust-proof small transformer. In view of the problem that the existing small transformer lacks a moisture-proof structure, causing the coil of the small transformer to encounter moisture, and the small transformer lacks a dust-proof structure, after long-term use, it is easy to cause dust to accumulate on the coil of the small transformer, affecting the heat dissipation of the small transformer. Now the following scheme is proposed, including a small transformer body, both sides of the small transformer body are hinged with a dust cover for shielding dust, and the moisture-proof component includes a storage box for holding desiccant, a first breathable moisture-absorbing cotton plate and two groups of second breathable moisture-absorbing cotton plates to shield external moisture from entering the small transformer body. When the utility model is in use, it can prevent the working circuit of the small transformer from being damaged due to moisture contamination, and prevent external dust from accumulating on the coil of the small transformer body, thereby extending the service life of the small transformer to a certain extent.

[0004] The above-mentioned disclosed patent has the following problems when in use: the second breathable moisture-absorbing cotton plate is difficult to disassemble and assemble, which is time-consuming and labor-intensive, causing inconvenience in use; meanwhile, the dust cover has a single structure and cannot dissipate heat for the transformer, thus affecting the heat dissipation effect. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a moisture-proof and dust-proof small transformer, which has the characteristics of convenient disassembly and assembly of the second breathable moisture-absorbing cotton board, various functions of the dust cover and good heat dissipation.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a moisture-proof and dust-proof small transformer, comprising a small transformer body, double-layer hollow dust covers are arranged on both sides of the small transformer body, the double-layer hollow dust covers are rotatably connected to the small transformer body through hinges, through grooves are arranged at both ends of the small transformer body, an exhaust fan is arranged inside the through groove, a moisture absorption component is arranged inside the through groove near one end outside, and mounting blocks are arranged around the bottom of the small transformer body.

[0007] Preferably, the desiccant assembly includes a replaceable desiccant cotton plate, a desiccant cotton plate frame, a return assembly and a spring limit pin, wherein the return assembly is arranged at the upper and lower ends of the inner part of the through slot, the desiccant cotton plate frame is arranged on the side of the return assembly away from the exhaust fan, the replaceable desiccant cotton plate is arranged in the middle of the desiccant cotton plate frame, and spring limit pins are arranged on both sides of the through slot of the small transformer body.

[0008] Preferably, the return assembly includes a push rod, a return spring, a fixed seat and a limit block, wherein fixed seats are provided at the upper and lower ends of the through groove, a push rod is slidably connected in the middle of the fixed seat, a limit block is provided at one end of the push rod close to the exhaust fan, and a return spring is embedded in the surface of the push rod between the fixed seat and the moisture-absorbing cotton board frame.

[0009] Preferably, the moisture-absorbing cotton plate frame always extends out of the through slot under the elastic force of the return spring, and the push rod is fixed to the moisture-absorbing cotton plate frame by screwing.

[0010] Preferably, a detachable moisture-absorbing cotton plate is arranged in the middle of the double-layer hollow dust cover, and spring latches are arranged on both sides of the double-layer hollow dust cover.

[0011] Preferably, a water inlet is provided at the upper end of the double-layer hollow dust cover, a drainage hole is provided at the bottom of the double-layer hollow dust cover, and a plurality of heat sinks are provided on the surface of the double-layer hollow dust cover.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a moisture absorption component. The moisture absorption efficiency of the replaceable moisture absorption cotton board is reduced after long-term use. The spring limit pins are pushed to both sides, and the elastic force of the reset spring causes the push rod to move back. The push rod pushes the moisture absorption cotton board frame to extend out of the through slot, and the moisture absorption replaceable moisture absorption cotton board is taken out from the moisture absorption cotton board frame, and the dry replaceable moisture absorption cotton board is inserted into the moisture absorption cotton board frame, and then the moisture absorption cotton board frame is pressed and pushed into the through slot. The pin head of the spring limit pin limits the two ends of the moisture absorption cotton board frame to prevent the moisture absorption cotton board frame from popping out. The replaceable moisture absorption cotton board is portable and time-saving and labor-saving;

[0014] 2. The utility model injects cooling water into the double-layer hollow dust cover through the water injection port, cools the small transformer body through the cooling water in the double-layer hollow dust cover, and the heat sink dissipates heat, so that the water temperature in the double-layer hollow dust cover is reduced, which is convenient for long-term heat dissipation and improves the heat dissipation effect of the small transformer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the moisture absorption component of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the return assembly of the utility model;

[0018] In the figure: 1. small transformer body; 2. hinge; 3. double-layer hollow dust cover; 4. moisture absorption component; 41. replaceable moisture absorption cotton board; 42. moisture absorption cotton board frame; 43. return assembly; 431. push rod; 432. reset spring; 433. fixed seat; 434. limit block; 44. spring limit pin; 5. mounting block; 6. drainage hole; 7. heat sink; 8. spring latch; 9. removable moisture absorption cotton board; 10. water inlet; 11. through groove; 12. exhaust fan. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example 1

[0021] See also Figure 1-3 The utility model provides the following technical solutions: a moisture-proof and dust-proof small transformer, comprising a small transformer body 1, double-layer hollow dust covers 3 are arranged on both sides of the small transformer body 1, the double-layer hollow dust covers 3 are rotatably connected to the small transformer body 1 through hinges 2, through grooves 11 are arranged at both ends of the small transformer body 1, an exhaust fan 12 is arranged inside the through groove 11, a moisture absorption component 4 is arranged inside the through groove 11 near one end of the outer side, and mounting blocks 5 are arranged around the bottom of the small transformer body 1.

[0022] Specifically, the desiccant assembly 4 includes a replaceable desiccant cotton plate 41, a desiccant cotton plate frame 42, a return assembly 43 and a spring limit pin 44, wherein the return assembly 43 is arranged at the upper and lower ends of the inner part of the through slot 11, the desiccant cotton plate frame 42 is arranged on the side of the return assembly 43 away from the exhaust fan 12, the replaceable desiccant cotton plate 41 is arranged in the middle of the desiccant cotton plate frame 42, and the small transformer body 1 is provided with spring limit pins 44 on both sides of the through slot 11.

[0023] By adopting the above technical scheme, the moisture absorption efficiency of the replaceable moisture-absorbing cotton board 41 decreases after long-term use. The spring limit pins 44 are pushed to both sides, and the moisture-absorbing cotton board frame 42 extends from the through groove 11. The moisture-absorbing replaceable moisture-absorbing cotton board 41 is removed from the moisture-absorbing cotton board frame 42, and the dry replaceable moisture-absorbing cotton board 41 is inserted into the moisture-absorbing cotton board frame 42. Then, the moisture-absorbing cotton board frame 42 is pushed into the through groove 11, and the pin heads of the spring limit pins 44 are used to limit the two ends of the moisture-absorbing cotton board frame 42 to prevent the moisture-absorbing cotton board frame 42 from popping out. The replaceable moisture-absorbing cotton board 41 is portable and time-saving and labor-saving.

[0024] Specifically, the return assembly 43 includes a push rod 431, a return spring 432, a fixed seat 433 and a limit block 434, wherein the upper and lower ends of the through groove 11 are provided with a fixed seat 433, the middle of the fixed seat 433 is slidably connected with a push rod 431, a limit block 434 is provided at one end of the push rod 431 close to the exhaust fan 12, and a return spring 432 is embedded in the surface of the push rod 431 between the fixed seat 433 and the moisture-absorbing cotton board frame 42.

[0025] By adopting the above technical solution, the spring limit pin 44 is pushed to both sides, and the elastic force of the reset spring 432 causes the push rod 431 to move back. The push rod 431 pushes the moisture-absorbing cotton plate frame 42 to extend out of the through groove 11, making it convenient to remove the moisture-absorbing replaceable moisture-absorbing cotton plate 41 from the moisture-absorbing cotton plate frame 42.

[0026] Specifically, the moisture-absorbing cotton plate frame 42 always extends out of the through slot 11 under the elastic force of the return spring 432, and the push rod 431 is fixed to the moisture-absorbing cotton plate frame 42 by screwing.

[0027] By adopting the above technical solution, it is avoided that the moisture-absorbing cotton plate frame 42 is located in the through groove 11, which makes it inconvenient to take out the replaceable moisture-absorbing cotton plate 41.

[0028] Specifically, a detachable moisture-absorbing cotton plate 9 is arranged in the middle of the double-layer hollow dust cover 3 , and spring latches 8 are arranged on both sides of the double-layer hollow dust cover 3 .

[0029] By adopting the above technical solution, the detachable moisture-absorbing cotton plate 9 can be conveniently removed from the double-layer hollow dust cover 3, and is easy to use and carry.

[0030] When this embodiment is in use, the replaceable moisture-absorbing cotton plate 41 is used to absorb moisture and prevent moisture. The moisture absorption efficiency of the replaceable moisture-absorbing cotton plate 41 decreases after long-term use. The spring limit pins 44 are pushed to both sides, and the elastic force of the reset spring 432 causes the push rod 431 to move back. The push rod 431 pushes the moisture-absorbing cotton plate frame 42 to extend out of the through groove 11, and the moisture-absorbing replaceable moisture-absorbing cotton plate 41 is removed from the moisture-absorbing cotton plate frame 42, and the dry replaceable moisture-absorbing cotton plate 41 is inserted into the moisture-absorbing cotton plate frame 42, and then the moisture-absorbing cotton plate frame 42 is pressed and pushed into the through groove 11, and the pin heads of the spring limit pins 44 are used to limit the two ends of the moisture-absorbing cotton plate frame 42 to prevent the moisture-absorbing cotton plate frame 42 from popping out. The replaceable moisture-absorbing cotton plate 41 is portable and time-saving, and it can prevent the working interior of the small transformer body 1 from getting damp, which is convenient for long-term use.

[0031] Example 2

[0032] The present embodiment is different from the embodiment 1 in that a water inlet 10 is provided at the upper end of the double-layer hollow dust cover 3 , a drainage hole 6 is provided at the bottom of the double-layer hollow dust cover 3 , and a plurality of heat sinks 7 are provided on the surface of the double-layer hollow dust cover 3 .

[0033] When this embodiment is used, cooling water is injected into the double-layer hollow dust cover 3 through the water injection port 10, and the cooling water in the double-layer hollow dust cover 3 is used to cool the small transformer body 1. The heat sink 7 dissipates heat, so that the water temperature in the double-layer hollow dust cover 3 is reduced, which is convenient for long-term heat dissipation and improves the heat dissipation effect of the small transformer body 1.

[0034] The structure and use principle of the small and medium-sized transformer body 1 and the exhaust fan 12 of the utility model have been disclosed in a moisture-proof and dust-proof small transformer disclosed in Chinese patent application No. 202222361332.5.

[0035] The working principle and use process of the utility model: when the utility model is used, the replaceable moisture-absorbing cotton plate 41 is used to absorb moisture and prevent moisture. The moisture absorption efficiency of the replaceable moisture-absorbing cotton plate 41 is reduced after long-term use. The spring limit pins 44 are pushed to both sides, and the elastic force of the reset spring 432 causes the push rod 431 to move back. The push rod 431 pushes the moisture-absorbing cotton plate frame 42 to extend out of the through groove 11. The moisture-absorbing replaceable moisture-absorbing cotton plate 41 is removed from the moisture-absorbing cotton plate frame 42, and the dry replaceable moisture-absorbing cotton plate 41 is inserted into the moisture-absorbing cotton plate frame 42, and then the moisture-absorbing cotton plate frame 42 is pressed and pushed into the through groove. 11, the pin head of the spring limit pin 44 limits the two ends of the moisture-absorbing cotton plate frame 42 to prevent the moisture-absorbing cotton plate frame 42 from popping out. The replaceable moisture-absorbing cotton plate 41 is portable and time-saving, which can prevent the working interior of the small transformer body 1 from getting damp and is convenient for long-term use; cooling water is injected into the double-layer hollow dust cover 3 through the water injection port 10, and the cooling water in the double-layer hollow dust cover 3 is used to cool the small transformer body 1, and the heat sink 7 is used to dissipate heat, so that the water temperature in the double-layer hollow dust cover 3 is reduced, which is convenient for long-term heat dissipation and improves the heat dissipation effect of the small transformer body 1.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A moisture-proof and dust-proof small transformer, comprising a small transformer body, characterized in that: Double-layer hollow dust covers are arranged on both sides of the small transformer body, and the double-layer hollow dust covers are rotatably connected to the small transformer body through hinges. Through grooves are arranged at both ends of the small transformer body, and exhaust fans are arranged inside the through grooves. A moisture absorption component is arranged inside the through grooves near one end outside, and mounting blocks are arranged around the bottom of the small transformer body.

2. A moisture-proof and dust-proof small transformer according to claim 1, characterized in that: The desiccant assembly comprises a replaceable desiccant cotton plate, a desiccant cotton plate frame, a return assembly and a spring limit pin, wherein the return assembly is arranged at the upper and lower ends of the inner part of the through slot, the desiccant cotton plate frame is arranged on the side of the return assembly away from the exhaust fan, the replaceable desiccant cotton plate is arranged in the middle of the desiccant cotton plate frame, and the small transformer body is provided with spring limit pins on both sides of the through slot.

3. A moisture-proof and dust-proof small transformer according to claim 2, characterized in that: The return movement assembly includes a push rod, a return spring, a fixed seat and a limit block, wherein fixed seats are arranged at the upper and lower ends of the through slot, a push rod is slidably connected in the middle of the fixed seat, a limit block is arranged at one end of the push rod close to the exhaust fan, and a return spring is embedded in the surface of the push rod between the fixed seat and the moisture-absorbing cotton board frame.

4. A moisture-proof and dust-proof small transformer according to claim 3, characterized in that: The moisture-absorbing cotton plate frame always extends out of the through slot under the elastic force of the return spring, and the push rod is fixed to the moisture-absorbing cotton plate frame by screwing.

5. A moisture-proof and dust-proof small transformer according to claim 1, characterized in that: A detachable moisture-absorbing cotton plate is arranged in the middle of the double-layer hollow dust cover, and spring latches are arranged on both sides of the double-layer hollow dust cover.

6. A moisture-proof and dust-proof small transformer according to claim 1, characterized in that: The upper end of the double-layer hollow dust cover is provided with a water injection port, the bottom of the double-layer hollow dust cover is provided with a drainage hole, and the surface of the double-layer hollow dust cover is provided with a plurality of heat sinks.

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