Passive heat dissipation power transformer

Abstract

The invention relates to the technical field of electrical equipment, and particularly discloses a passive heat dissipation power transformer which comprises a transformer body. The transformer body is sleeved with a heat dissipation sleeve block; a mounting groove corresponding to the transformer body is formed in the heat dissipation sleeve block; a stepped groove is formed in the outer surface of the heat dissipation sleeve block; a heat dissipation sleeve is rotationally connected to the stepped groove in a sleeving manner; a plurality of heat dissipation fins are uniformly and fixedly connected to the outer surface of the heat dissipation sleeve; the heat of the transformer body is transferred to the heat dissipation sleeve block through four-side contact between the heat dissipation sleeve block and the transformer body, and then transferred to the rotatably connected heat dissipation sleeve, so that the heat is transferred to air through large-area contact between the plurality of heat dissipation fins and the air, and meanwhile, the heat on the front side of the transformer body can be taken away by utilizing flowing air; the heat dissipation fins can be blown to rotate, heat on the back face of the transformer body is taken away, the overall heat dissipation effect is improved, and the problem that the heat dissipation effect of the back face of an existing transformer is not high enough is solved.

Description

Technical Field

[0001] The invention relates to the technical field of electrical equipment, in particular to a passive heat dissipation power transformer. Background Art

[0002] A power transformer is an electrical device used to change the voltage of alternating current. It works on the principle of electromagnetic induction. The transformer is able to convert alternating current of one voltage level to another while maintaining the frequency. This device plays a vital role in the power system because it allows the use of higher voltages to reduce losses when transmitting electricity over long distances, and is able to step down the voltage at the distribution stage for domestic and industrial use.

[0003] A Chinese invention patent with publication number CN111430113B disclosed a new type of heat dissipation transformer on November 27, 2020, which includes a transformer shell and a controller. Transformer oil for dissipating heat to the transformer is stored in the transformer shell. Heat dissipation strips for dissipating heat to the transformer are provided on the side walls of the transformer shell. After the transformer generates heat during operation, the heat is transferred to the transformer oil, and then the heat diffuses through the transformer oil, thereby dissipating the heat of the transformer. The heat dissipation through the diffusion of transformer oil is slow. For this reason, a heat dissipation acceleration mechanism for accelerating the heat dissipation of the transformer oil is provided on the transformer shell. The heat dissipation acceleration mechanism can accelerate the fluidity of the transformer oil in the transformer shell, thereby accelerating the heat dissipation of the transformer oil. A temperature sensor for sensing the temperature of the transformer shell is installed on the side walls of the transformer shell. When the temperature sensor senses that the temperature of the transformer shell is high, the temperature sensor transmits the sensing signal to the controller, and then the controller controls the heat dissipation acceleration mechanism to work.

[0004] However, the above-mentioned disclosed scheme has the following shortcomings: the transformer heat dissipation in the prior art adopts active heat dissipation, which has low stability in long-term use. After damage, it will lose the active heat dissipation ability and requires additional electric energy to drive, resulting in high power consumption during long-term use and cannot be used in batches. Summary of the invention

[0005] The purpose of the present invention is to solve the technical problems that the transformer heat dissipation in the prior art adopts active heat dissipation, such heat dissipation method has low stability in long-term use, will lose the active heat dissipation ability after damage, and requires additional electric energy to drive, resulting in high power consumption in long-term use and inability to be used in batches, and to provide a passive heat dissipation power transformer.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A passive heat dissipation power transformer described in the present invention comprises a transformer body; a heat dissipation sleeve block is sleeved on the transformer body; a mounting groove is provided on the heat dissipation sleeve block corresponding to the transformer body; a stepped groove is provided on the outer surface of the heat dissipation sleeve block; a heat dissipation sleeve is rotatably sleeved on the stepped groove; and a plurality of heat dissipation fins are evenly fixedly connected to the outer surface of the heat dissipation sleeve.

[0008] Furthermore, a collecting cavity is provided at the upper end of the heat dissipation sleeve; and a water inlet groove is provided on the heat dissipation sleeve and connected to the collecting cavity.

[0009] Furthermore, a stepped square shaft is slidably inserted into the heat dissipation sleeve corresponding to the water inlet groove; a sealing baffle is fixedly connected to the lower end of the stepped square shaft; and an elastic member is sleeved on the stepped square shaft.

[0010] Furthermore, a shielding stirring ring is rotatably inserted in the collection cavity.

[0011] Furthermore, a synchronous plug-in shaft is slidably plugged into the shielding stirring ring; and the upper end of the synchronous plug-in shaft is fixedly connected to the heat dissipation sleeve.

[0012] Furthermore, grease is filled between the heat dissipation sleeve block and the heat dissipation sleeve.

[0013] The passive heat dissipation power transformer provided by the present invention has the following beneficial effects:

[0014] 1. The present invention transfers the heat of the transformer body to the heat dissipation sleeve block through the contact between the heat dissipation sleeve block and the transformer body on four sides, and then transfers it to the rotatably connected heat dissipation sleeve, so that the heat is transferred to the air through the large-area contact between multiple heat dissipation fins and the air. At the same time, the flowing air can take away the heat on the front of the transformer body, and the heat dissipation fins can be blown to rotate to take away the heat on the back of the transformer body, so that the overall heat dissipation effect is improved, which solves the problem that the heat dissipation effect on the back of the existing transformer is not high enough;

[0015] 2. The present invention can connect rainwater or tap water to the water inlet trough, so that a large amount of water can be collected in the collection chamber, so that the water can absorb the heat of the transformer body, and then evaporate to form water vapor to bring the heat into the air, so that the transformer body is always used within the optimal temperature range, solving the problem of low passive heat dissipation effect of existing transformers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings;

[0017] Figure 1 It is a first isometric structural schematic diagram of the present invention;

[0018] Figure 2 It is a second isometric structural schematic diagram of the present invention;

[0019] Figure 3 It is a third isometric structural schematic diagram of the present invention;

[0020] Figure 4 It is a front structural schematic diagram of the present invention.

[0021] Explanation of the numbers in the figure: 1. Transformer body; 2. Heat dissipation sleeve block; 3. Mounting groove; 4. Step groove; 5. Heat dissipation sleeve; 6. Heat dissipation fins; 7. Collection chamber; 8. Water inlet groove; 9. Stepped square shaft; 10. Sealing baffle; 11. Elastic part; 12. Shielding stirring ring; 13. Synchronous plug shaft. DETAILED DESCRIPTION

[0022] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0025] See also Figure 1-4 As shown, a passive heat dissipation power transformer comprises a transformer body 1; a heat dissipation sleeve 2 is sleeved on the transformer body 1; a mounting groove 3 is provided on the heat dissipation sleeve 2 corresponding to the transformer body 1; a stepped groove 4 is provided on the outer surface of the heat dissipation sleeve 2; a heat dissipation sleeve 5 is rotatably sleeved on the stepped groove 4; a plurality of heat dissipation fins 6 are evenly fixedly connected to the outer surface of the heat dissipation sleeve 5; when working, the heat of the transformer body 1 is transferred to the heat dissipation sleeve 2 through the contact between the heat dissipation sleeve 2 and the transformer body 1 on four sides, and then transferred to the heat dissipation sleeve 5 connected in rotation, so as to be transferred to the air through the large-area contact between the plurality of heat dissipation fins 6 and the air, and at the same time, the flowing air can take away the heat from the front of the transformer body 1, and the heat dissipation fins 6 can be blown to rotate to take away the heat from the back of the transformer body 1, so that the overall heat dissipation effect is improved, and the problem that the heat dissipation effect on the back of the existing transformer is not high enough is solved.

[0026] A collecting cavity 7 is provided at the upper end of the heat dissipation sleeve 2; a water inlet groove 8 is provided on the heat dissipation sleeve 2 and is connected to the collecting cavity 7; when working, rainwater or tap water can be connected to the water inlet groove 8, so that a large amount of water can be collected in the collecting cavity 7, so that the water can absorb the heat of the transformer body 1, and then evaporate to form water vapor to bring the heat into the air, so that the transformer body 1 is always used within the optimal temperature range, solving the problem of low passive heat dissipation effect of the existing transformer.

[0027] A stepped square shaft 9 is slidably inserted into the heat dissipation sleeve 2 corresponding to the water inlet groove 8; a sealing baffle 10 is fixedly connected to the lower end of the stepped square shaft 9; an elastic member 11 is sleeved on the stepped square shaft 9; during operation, the stepped square shaft 9 cooperates with the elastic member 11, so that the sealing baffle 10 can fit the water inlet groove 8 when not subject to other external forces, but after rainwater accumulates, the sealing baffle 10 can be pressed down, so that rainwater or tap water can smoothly enter the collection cavity 7 and be collected, and then the specific heat capacity of rainwater is used to absorb the heat of the transformer body 1, and then evaporates to transfer the heat to the air, so that the temperature of the transformer body 1 is in the optimal temperature range, and can be used normally in high temperature weather, which solves the problem of high and unstable operating temperature of the existing transformer in high temperature weather.

[0028] A shielding stirring ring 12 is rotatably inserted in the collecting cavity 7; when working, the shielding stirring ring 12 made of foam allows it to float on the water surface, thereby reducing the contact area with the air and achieving the function of reducing volatilization, so that more heat can be enriched for heating, which can be converted into water vapor and volatilized into the air, taking away more heat, solving the problem that the passive heat dissipation effect of the existing transformer is not good enough.

[0029] A synchronous plug-in shaft 13 is slidably plugged into the shielding stirring ring 12; the upper end of the synchronous plug-in shaft 13 is fixedly connected to the heat dissipation sleeve 5; when working, the shielding stirring ring 12 and the heat dissipation sleeve 5 are connected by the synchronous plug-in shaft 13, so that the shielding stirring ring 12 can rotate with the heat dissipation sleeve 5, thereby stirring the rainwater collected in the collection cavity 7, and then the rainwater is heated evenly, so that it can fully absorb the heat from the transformer body 1, and at the same time, the heat absorbed by the rainwater can also be transferred to the heat dissipation sleeve 5 and the heat dissipation fins 6, and passively dissipated into the air, so that the efficiency of passive heat dissipation is further improved, and the heat can be taken away by evaporation of the rainwater absorbing heat, so that the passive heat dissipation effect of the transformer body 1 is improved, and the problem that the passive heat dissipation effect of the existing transformer is not high enough is solved.

[0030] Grease is filled between the heat dissipation sleeve block 2 and the heat dissipation sleeve 5; during operation, the friction of the heat dissipation sleeve 5 rotating on the heat dissipation sleeve block 2 can be reduced by the grease, so that the rotation resistance is low and the heat dissipation sleeve 5 can be rotated by wind, so as to dissipate heat on the leeward side of the transformer body 1, realize active heat dissipation on the leeward side, play an overall heat dissipation effect, make the heat dissipation effect better, and solve the problem of poor heat dissipation effect on the back of the existing transformer.

[0031] By adopting the above scheme, when the present invention is in use, the heat of the transformer body 1 is transferred to the heat dissipation sleeve 2 through the contact between the heat dissipation sleeve 2 and the transformer body 1 on four sides, and then transferred to the heat dissipation sleeve 5 connected in rotation, so that the heat is transferred to the air through the large-area contact between the multiple heat dissipation fins 6 and the air. At the same time, the flowing air can take away the heat on the front side of the transformer body 1, and the heat dissipation fins 6 can be blown to rotate to take away the heat on the back side of the transformer body 1, so that the overall heat dissipation effect is improved, and the problem of insufficient heat dissipation effect on the back side of the existing transformer is solved; rainwater or tap water can be externally connected through the water inlet trough 8, so that a large amount of water can be collected in the collection chamber 7, so that the water can be used to absorb the heat of the transformer body 1, and then evaporate to form Water vapor brings heat into the air, so that the transformer body 1 is always used within the optimal temperature range, solving the problem of low passive heat dissipation effect of existing transformers; by cooperating with the stepped square shaft 9 and the elastic member 11, the sealing baffle 10 can fit the water inlet trough 8 when not subject to other external forces, but after rainwater accumulates, the sealing baffle 10 can be pressed down, so that rainwater or tap water can smoothly enter the collection chamber 7 and be collected, and then the specific heat capacity of rainwater is used to absorb the heat of the transformer body 1, and then evaporates to transfer the heat to the air, so that the temperature of the transformer body 1 is in the optimal temperature range, and can be used normally in high temperature weather, solving the problem of high and unstable temperature of existing transformers in high temperature weather.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A passive heat dissipation power transformer, characterized in that; The invention comprises a transformer body (1); a heat dissipation sleeve (2) is sleeved on the transformer body (1); a mounting groove (3) is provided on the heat dissipation sleeve (2) corresponding to the transformer body (1); a stepped groove (4) is provided on the outer surface of the heat dissipation sleeve (2); a heat dissipation sleeve (5) is rotatably sleeved on the stepped groove (4); and a plurality of heat dissipation fins (6) are evenly fixedly connected to the outer surface of the heat dissipation sleeve (5).

2. The passive heat dissipation power transformer according to claim 1, characterized in that: A collecting chamber (7) is provided at the upper end of the heat dissipation sleeve (2); and a water inlet groove (8) is provided on the heat dissipation sleeve (2) and is connected to the collecting chamber (7).

3. The passive heat dissipation power transformer according to claim 2, characterized in that: A stepped square shaft (9) is slidably inserted into the heat dissipation sleeve (2) corresponding to the water inlet groove (8); a sealing baffle (10) is fixedly connected to the lower end of the stepped square shaft (9); and an elastic member (11) is sleeved on the stepped square shaft (9).

4. The passive heat dissipation power transformer according to claim 3, characterized in that: A shielding stirring ring (12) is rotatably inserted in the collection chamber (7).

5. The passive heat dissipation power transformer according to claim 4, characterized in that: A synchronous plug-in shaft (13) is slidably plugged into the shielding stirring ring (12); the upper end of the synchronous plug-in shaft (13) is fixedly connected to the heat dissipation sleeve (5).

6. The passive heat dissipation power transformer according to claim 5, characterized in that: Lubricating grease is filled between the heat dissipation sleeve block (2) and the heat dissipation sleeve (5).

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