Built-in transformer of series welding machine

Abstract

The utility model discloses a series welding machine built-in transformer which comprises a main body module and a cooling module, and the cooling module extends into an inner cavity of an iron core and is used for cooling the iron core. Comprising an outer shell installed at the bottom end of an iron core, heat conduction pipes fixed to the top end of the outer shell in an array mode and stretching into an inner cavity of the iron core, a water outlet pipeline installed on one side of the outer shell and communicated with the inner cavity of the outer shell, an inner shell arranged in the inner cavity of the outer shell, and spray pipes fixed to the top end of the inner shell in an array mode and stretching into inner cavities of the heat conduction pipes. The water inlet pipeline is installed on one side of the inner shell and extends out of the outer shell, the spiral plate is fixed between the outer side face of the spray pipe and the inner wall of the heat conduction pipe, the outer shell is fixed to the fixing frames on the two sides through bolts, the top end of the outer shell is tightly attached to the bottom end of the iron core and used for installing the heat conduction pipe, and the bottom end of the heat conduction pipe is communicated with an inner cavity of the outer shell. According to the series welding machine with the built-in transformer, the transformer is arranged in the series welding machine, and the series welding machine has the advantages of being good in heat dissipation effect and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a built-in transformer for a string welding machine. Background Art

[0002] The transformers of photovoltaic string welding machines are generally divided into built-in transformers and external transformers. The built-in transformer, as the name suggests, is a transformer inside the photovoltaic string welding machine as a part of the structure of the string welding machine.

[0003] The existing built-in transformer of the string welding machine has the following main disadvantages during use: since the instantaneous welding current of the string welding machine increases during welding, during long-term welding operations, the current will rise and fall rapidly in the transformer for a long time and at a high frequency, which places extremely high requirements on the material, winding, wiring, heat dissipation, etc. of the transformer. Otherwise, the transformer is very likely to burn out during use or heat accumulation will lead to accelerated aging, affecting its service life. Therefore, there is room for improvement. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0005] To this end, the technical solution adopted by the utility model is: a built-in transformer for a string welding machine, including: a main module and a cooling module, the main module includes an iron core, a plurality of windings wrapped around the iron core, and a fixing frame symmetrically fixed on the iron core.

[0006] The cooling module includes an outer shell installed at the bottom end of the iron core, a heat conduction pipe fixed in an array at the top end of the outer shell and extending into the inner cavity of the iron core, a water outlet pipe installed at one side of the outer shell and connected to the inner cavity of the outer shell, an inner shell arranged in the inner cavity of the outer shell, a nozzle fixed in an array at the top end of the inner shell and extending into the inner cavity of the heat conduction pipe, a water inlet pipe installed at one side of the inner shell and extending out of the outer shell, and a spiral plate fixed between the outer side surface of the nozzle and the inner wall of the heat conduction pipe.

[0007] In a preferred example, the utility model can be further configured as follows: a plurality of circular grooves are formed in an array at the bottom end of the iron core, and the heat conducting pipes are embedded in the circular grooves.

[0008] In a preferred example, the utility model can be further configured as follows: a spray hole is opened at the top end of the spray pipe.

[0009] In a preferred example, the utility model can be further configured as follows: the inner side of the spiral plate is close to the outer side of the nozzle, and the outer side is close to the inner wall of the heat conduction pipe, so that a spiral flow channel is formed between the nozzle and the heat conduction pipe.

[0010] In a preferred example, the utility model can be further configured as follows: insulating paper is provided between the heat conducting pipe and the inner wall of the circular groove.

[0011] By adopting the above technical solution, the beneficial effects achieved by the utility model are:

[0012] 1. In the utility model, a plurality of circular grooves are arranged in an array at the bottom end of the iron core, and a cooling module extending into the circular groove is installed at the bottom end of the iron core. When the transformer is working, the heat of the iron core is transferred to the heat conducting pipe, and the cooling water enters the inner shell through the water inlet pipe, and then enters the nozzle through the inner shell to be sprayed into the heat conducting pipe. The cooling water flows in the heat conducting pipe and exchanges heat with the heat conducting pipe. After that, the cooling water after absorbing heat enters the outer shell and is discharged through the water outlet pipe, thereby realizing water cooling of the transformer iron core, which can effectively reduce the working temperature of the built-in transformer and avoid the transformer from being burned due to excessive temperature.

[0013] 2. In the utility model, a spiral plate is arranged between the outer side surface of the nozzle and the inner wall of the heat conducting tube, so that a spiral flow channel is formed between the nozzle and the heat conducting tube, so that when the cooling water enters the heat conducting tube from the nozzle, the cooling water flows in the spiral flow channel, and the path of the cooling water through the heat conducting tube is prolonged, that is, the residence time of the cooling water in the heat conducting tube is prolonged, so that the cooling water can fully exchange heat with the heat conducting tube, take away the heat on the heat conducting tube, and further increase the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure decomposition of the utility model;

[0016] Figure 3 It is a schematic cross-sectional view of the iron core of the utility model;

[0017] Figure 4 It is a cross-sectional schematic diagram of a cooling module of the present utility model;

[0018] Figure 5 It is a cross-sectional schematic diagram of the cooling module of the present utility model.

[0019] Reference numerals:

[0020] 100, main body module; 110, iron core; 111, circular slot; 120, winding; 130, fixing frame;

[0021] 200, cooling module; 210, outer shell; 220, heat pipe; 230, water outlet pipe; 240, inner shell; 250, nozzle; 251, spray hole; 260, water inlet pipe; 270, spiral plate. DETAILED DESCRIPTION

[0022] 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 noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0023] Some embodiments of the present invention are described below in conjunction with the accompanying drawings. Embodiment 1

[0024] Combination Figure 1-5 As shown, this embodiment provides a built-in transformer for a string welding machine, including: a main body module 100 and a cooling module 200.

[0025] The main body module 100 includes an iron core 110 , a plurality of windings 120 wrapped around the iron core 110 , and a fixing frame 130 symmetrically fixed on the iron core 110 .

[0026] The iron core 110 and the winding 120 cooperate with each other to form the overall structure of the transformer. A plurality of circular grooves 111 are arranged in an array at the bottom end of the iron core 110 for the cooling module 200 to extend into and cool the iron core 110. The fixing frame 130 is used to facilitate the installation and fixation of the iron core 110 and is also used to install the cooling module 200.

[0027] The cooling module 200 extends into the inner cavity of the iron core 110 and is used to cool the iron core 110, including an outer shell 210 installed at the bottom end of the iron core 110, a heat pipe 220 fixed in an array at the top of the outer shell 210 and extending into the inner cavity of the iron core 110, a water outlet pipe 230 installed at one side of the outer shell 210 and connected to the inner cavity of the outer shell 210, an inner shell 240 arranged in the inner cavity of the outer shell 210, a nozzle 250 fixed in an array at the top of the inner shell 240 and extending into the inner cavity of the heat pipe 220, a water inlet pipe 260 installed at one side of the inner shell 240 and extending out of the outer shell 210, and a spiral plate 270 fixed between the outer side surface of the nozzle 250 and the inner wall of the heat pipe 220.

[0028] The outer shell 210 is fixed to the fixing frames 130 on both sides by bolts, and the top end is close to the bottom end of the iron core 110, and is used to install the heat pipe 220. The bottom end of the heat pipe 220 is connected to the inner cavity of the outer shell 210, and the top end is embedded in the circular groove 111 on the iron core 110, so that the heat generated by the iron core 110 during operation can be transferred to the heat pipe 220.

[0029] Furthermore, insulating paper is provided between the heat conducting pipe 220 and the inner wall of the circular groove 111 to prevent the heat conducting pipe 220 from affecting the performance of the iron core 110 .

[0030] The water outlet pipe 230 is used to discharge the cooling water in the inner cavity of the outer shell 210 .

[0031] The inner shell 240 is arranged in the inner cavity of the outer shell 210, and is used to install the nozzle 250. The bottom end of the nozzle 250 is connected to the inner shell 240, and the top end extends into the inner cavity of the heat pipe 220. The top end of the nozzle 250 is provided with a spray hole 251, which is used to send cooling water in the inner cavity of the inner shell 240 into the top end of the heat pipe 220, so that the cooling water flows from the top of the heat pipe 220 to the inner cavity of the outer shell 210. During the flow of the cooling water, heat is exchanged with the heat pipe 220, thereby taking away the heat on the heat pipe 220 and cooling the iron core 110.

[0032] The water inlet pipe 260 is used to deliver cooling water into the inner cavity of the inner shell 240 .

[0033] The inner side of the spiral plate 270 is close to the outer side of the nozzle 250, and the outer side is close to the inner wall of the heat pipe 220, forming a spiral flow channel between the nozzle 250 and the heat pipe 220, so that when the cooling water enters the heat pipe 220 from the nozzle 250, the cooling water flows in the spiral flow channel, extending the path of the cooling water through the heat pipe 220, that is, extending the residence time of the cooling water in the heat pipe 220, so that the cooling water can fully exchange heat with the heat pipe 220, take away the heat on the heat pipe 220, and further increase the cooling effect.

[0034] The working principle and use process of the utility model are as follows: when the transformer is working, the heat on the iron core 110 is transferred to the heat conducting pipe 220, and at this time, the heat enters the inner cavity of the inner shell 240 through the water inlet pipe 260 during cooling, and enters the nozzle 250 from the inner cavity of the inner shell 240, and then enters the heat conducting pipe 220 from the nozzle hole 251 at the top of the nozzle 250. After the cooling water enters the heat conducting pipe 220, it flows in the spiral flow channel formed by the spiral plate 270, contacts the inner wall of the heat conducting pipe 220 and performs heat exchange, absorbs and takes away the heat on the heat conducting pipe 220, and then enters the outer shell 210 during cooling after absorbing the heat, and is discharged through the water outlet pipe 230, thereby realizing the cooling of the iron core 110.

[0035] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A built-in transformer for a string welding machine, comprising: A main body module (100) and a cooling module (200), characterized in that the main body module (100) comprises an iron core (110), a plurality of windings (120) wrapped around the iron core (110), and a fixing frame (130) symmetrically fixed on the iron core (110); The cooling module (200) comprises an outer shell (210) mounted at the bottom end of the iron core (110), a heat conducting pipe (220) fixed in an array at the top end of the outer shell (210) and extending into the inner cavity of the iron core (110), a water outlet pipe (230) mounted on one side of the outer shell (210) and communicating with the inner cavity of the outer shell (210), an inner shell (240) arranged in the inner cavity of the outer shell (210), a nozzle (250) fixed in an array at the top end of the inner shell (240) and extending into the inner cavity of the heat conducting pipe (220), a water inlet pipe (260) mounted on one side of the inner shell (240) and extending out of the outer shell (210), and a spiral plate (270) fixed between the outer side surface of the nozzle (250) and the inner wall of the heat conducting pipe (220).

2. A built-in transformer for a string welding machine according to claim 1, characterized in that: The bottom end of the iron core (110) is provided with a plurality of circular grooves (111) in an array, and the heat conducting pipe (220) is embedded in the circular grooves (111).

3. The built-in transformer of a string welding machine according to claim 1, characterized in that: The top end of the nozzle (250) is provided with a nozzle hole (251).

4. A built-in transformer for a string welding machine according to claim 1, characterized in that: The inner side of the spiral plate (270) is in close contact with the outer side of the nozzle (250), and the outer side is in close contact with the inner wall of the heat conducting pipe (220), so that a spiral flow channel is formed between the nozzle (250) and the heat conducting pipe (220).

5. The built-in transformer of a string welding machine according to claim 1, characterized in that: Insulation paper is provided between the heat conducting pipe (220) and the inner wall of the circular groove (111).

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