阅读说明：本技术 一种用于圆铜线的退火水循环系统及水循环方法 (Annealing water circulation system and water circulation method for round copper wire ) 是由 常天福 李进 兰冲 陈黄浙 净晨军 于 2021-06-18 设计创作，主要内容包括：本发明公开了一种用于圆铜线的退火水循环系统及水循环方法,退火水循环系统包括储水箱、循环水泵、冷却装置和退火水箱,退火水箱中设置有退火轮,退火轮上缠绕有圆铜线；储水箱包含第一进水口和第一出水口；冷却装置包含第二进水口和第二出水口,退火水箱包含第三进水口和第三出水口,且第三出水口位于第三进水口的上方；第一出水口与循环水泵的进水管通过管道连接,循环水泵的出水管通过管道与第二进水口连接,第二出水口与第三进水口通过管道连接,第三出水口与第一进水口通过管道连接。本发明技术方案具有以下有益效果：1、冷却效率高,温度可控；2、增加了过滤器,使冷却水保持干净；3、增加了储水箱,能保持退火水箱中的液面恒定。(The invention discloses an annealing water circulation system and a water circulation method for round copper wires, wherein the annealing water circulation system comprises a water storage tank, a circulating water pump, a cooling device and an annealing water tank, wherein an annealing wheel is arranged in the annealing water tank, and round copper wires are wound on the annealing wheel; the water storage tank comprises a first water inlet and a first water outlet; the cooling device comprises a second water inlet and a second water outlet, the annealing water tank comprises a third water inlet and a third water outlet, and the third water outlet is positioned above the third water inlet; the first water outlet is connected with a water inlet pipe of the circulating water pump through a pipeline, a water outlet pipe of the circulating water pump is connected with the second water inlet through a pipeline, the second water outlet is connected with the third water inlet through a pipeline, and the third water outlet is connected with the first water inlet through a pipeline. The technical scheme of the invention has the following beneficial effects: 1. the cooling efficiency is high, and the temperature is controllable; 2. a filter is added to keep the cooling water clean; 3. the water storage tank is added, so that the liquid level in the annealing water tank can be kept constant.)

1. The annealing water circulation system for the round copper wire is characterized by comprising a water storage tank (1), a circulating water pump (2), a cooling device (3) and an annealing water tank (4), wherein an annealing wheel (5) is arranged in the annealing water tank (4), and the round copper wire (6) is wound on the annealing wheel (5); the water storage tank (1) comprises a first water inlet (101) and a first water outlet (102), and the first water inlet (101) is positioned above the first water outlet (102); the cooling device (3) comprises a second water inlet (301) and a second water outlet (302), the annealing water tank (4) comprises a third water inlet (401) and a third water outlet (402), and the third water outlet (402) is positioned above the third water inlet (401); the third water outlet (402) is higher than the first water inlet (101); the first water outlet (102) is connected with a water inlet pipe of the circulating water pump (2) through a pipeline, a water outlet pipe of the circulating water pump (2) is connected with the second water inlet (301) through a pipeline, the second water outlet (302) is connected with the third water inlet (401) through a pipeline, and the third water outlet (402) is connected with the first water inlet (101) through a pipeline.

2. The annealing water circulation system for round copper wires according to claim 1, characterized in that the cooling device (3) is an industrial water chiller.

3. The annealing water circulation system for round copper wires according to claim 2, characterized in that a filter (7) is further arranged between the cooling device (3) and the annealing water tank (4), the filter (7) comprises a shell, and a filter screen (701) and filter cotton (702) are sequentially arranged in the shell according to the water flow direction.

4. The annealing water circulation system for round copper wires according to claim 3, further comprising a controller, wherein a temperature sensor (8) is arranged in the annealing water tank (4), a signal output end of the temperature sensor (8) is connected with a signal input end of the controller, and a first signal output end of the controller is electrically connected with a control end of the industrial water chiller.

5. The annealing water circulation system for round copper wires according to claim 4, characterized in that an electric heating rod (9) is arranged in the annealing water tank (4), and the second signal output end of the controller is electrically connected with the control end of the electric heating rod (9).

6. The annealing water circulation system for round copper wires according to claim 5, characterized in that the volume ratio of the water storage tank (1) to the annealing water tank (4) is 1.8-2.

7. The annealing water circulation system for round copper wires according to claim 6, further comprising a three-way diverter valve (10), wherein the water inlet of the three-way diverter valve (10) is connected with the water outlet pipe of the circulating water pump (2), one water outlet of the three-way diverter valve (10) is connected with the second water inlet (301), and the other water outlet of the three-way diverter valve (10) is connected to the water storage tank (1).

8. A water circulation method for an annealing water circulation system for round copper wire according to claim 7, comprising the steps of:

firstly, a water storage tank (1), a circulating water pump (2), an industrial water chiller, a filter (7) and an annealing water tank (4) are sequentially connected through pipelines, and a round copper wire is led out upwards after bypassing an annealing wheel (5) from top to bottom;

step two, starting the circulating water pump (2), starting the welding strip and tin plating integrated machine after water flows out of the third water outlet (402) from the annealing water tank (4) and flows into the water storage tank (1) from the first water inlet (101), and rotating a winding wheel;

and step three, the temperature sensor (8) acquires the real-time water temperature T in the annealing water tank (4) and sends the real-time water temperature T to the controller, and the controller judges whether to send a refrigeration signal to the industrial water chiller or send a heating signal to the electric heating rod (9) or not according to a preset temperature range.

9. The water circulation method according to claim 8, wherein the preset temperature range in the third step is 26-30 ℃, when the water temperature in the annealing water tank (4) is higher than 30 ℃, the industrial water chiller starts to refrigerate, and when the water temperature in the annealing water tank (4) is lower than 26 ℃, the electric heating rod (9) starts to heat.

Technical Field

The invention relates to the field of photovoltaic solder strip manufacturing, in particular to an annealing water circulation system and a water circulation method for a round copper wire.

Background

The full-automatic tinning all-in-one machine for solder strip in solar photovoltaic industry mainly produces photovoltaic solder strip. The photovoltaic solder strip is also called a tinned copper strip or a tinned copper strip, is a current dividing and converging strip and an interconnecting strip, is applied to connection between photovoltaic module cells, and plays an important role in conducting and gathering electricity. The solder strip is an important raw material in the welding process of the photovoltaic module, the quality of the solder strip directly affects the current collection efficiency of the photovoltaic module, and the power of the photovoltaic module is greatly affected.

In the production process of the welding strip, the annealing process of the round copper wire is one of the most critical process links, and the size of the yield strength and the fluctuation range of the yield strength of a finished product are directly influenced. The change of the quality of cooling water and the quality of a water cooling effect have a crucial effect on the yield change of the annealed copper wire, the main structure of the conventional annealing water circulation system for the round copper wire comprises an annealing water tank, a circulating water pump, a condenser and a circulating pipeline, and water in the annealing water tank is sent into the condenser through the centrifugal force of the circulating water pump to be cooled and then returns to the annealing water tank. The existing annealing water circulation system has the following defects: 1. the cooling effect is poor, the prior art adopts an air-cooled condenser mode, the heat emitted by a refrigerant is taken away by accelerating the air flow by a ventilator, but the cooling water cannot be cooled when the outside is in a high-temperature environment due to the influence of the temperature of a working environment; 2. the annealing furnace is free of a filtering cleaning device, after annealing work is carried out for a period of time, due to the fact that impurities such as dirt are attached to the surface of the wire rod and copper powder and the like generated in the annealing process are attached to the surface of the wire rod, along with the increase of annealing time, cooling water becomes more and more turbid, and the annealing effect and the cleaning of the surface wire rod after annealing are seriously affected; 3. the annealing water tank is not provided with a cooling water adding structure, after annealing work is carried out for a period of time, along with continuous consumption of cooling water, the water level in the annealing water tank is reduced, the length of an annealing wire rod and the length of the wire rod at an annealing cooling section are changed, and the stability of the yield strength of a finished product is seriously influenced.

Therefore, how to keep the temperature of the water in the annealing water tank within a temperature range, how to keep the liquid level in the annealing water tank stable, and how to keep the water in the annealing water tank clean are technical problems that need to be solved by the technical personnel in the field at present.

Disclosure of Invention

In order to solve the technical problems, the invention mainly aims to provide an annealing water circulation system and a water circulation method for round copper wires, so as to solve the problems of unstable water temperature, unstable liquid level, dirty cooling water and the like in a retrogradation water tank in the prior art.

In order to achieve the above object, the present invention adopts the following technical solutions.

The annealing water circulation system for the round copper wire comprises a water storage tank, a circulating water pump, a cooling device and an annealing water tank, wherein an annealing wheel is arranged in the annealing water tank, and the round copper wire is wound on the annealing wheel; the water storage tank comprises a first water inlet and a first water outlet, and the first water inlet is positioned above the first water outlet; the cooling device comprises a second water inlet and a second water outlet, the annealing water tank comprises a third water inlet and a third water outlet, and the third water outlet is positioned above the third water inlet; the third water outlet is higher than the first water inlet; the first water outlet is connected with a water inlet pipe of the circulating water pump through a pipeline, a water outlet pipe of the circulating water pump is connected with the second water inlet through a pipeline, the second water outlet is connected with the third water inlet through a pipeline, and the third water outlet is connected with the first water inlet through a pipeline.

Further, the cooling device is an industrial water chiller.

Furthermore, a filter is arranged between the cooling device and the annealing water tank, the filter comprises a shell, and a filter screen and filter cotton are sequentially arranged in the shell according to the water flow direction.

Further, still include the controller, be provided with temperature sensor in the annealing water tank, temperature sensor's signal output part is connected with the signal input part of controller, and the first signal output part of controller is connected with the control end electricity of industry cold water machine.

Furthermore, an electric heating rod is arranged in the annealing water tank, and a second signal output end of the controller is electrically connected with a control end of the electric heating rod.

Furthermore, the volume ratio of the water storage tank to the annealing water tank is 1.8-2.

The water storage tank is characterized by further comprising a three-way diverter valve, a water inlet of the three-way diverter valve is connected with a water outlet pipe of the circulating water pump, one water outlet of the three-way diverter valve is connected with the second water inlet, and the other water outlet of the three-way diverter valve is connected to the water storage tank.

(II) a water circulation method based on an annealing water circulation system for round copper wires, wherein the water circulation method comprises the following steps:

firstly, a water storage tank, a circulating water pump, an industrial water chiller, a filter and an annealing water tank are sequentially connected through pipelines, and a round copper wire is led out upwards after bypassing an annealing wheel from top to bottom;

step two, starting a circulating water pump, starting the welding strip tinning integrated machine after water flows out of the annealing water tank from the third water outlet and flows into the water storage tank from the first water inlet, and rotating a winding wheel;

and step three, the temperature sensor acquires the real-time water temperature T in the annealing water tank and sends the real-time water temperature T to the controller, and the controller judges whether to send a refrigeration signal to the industrial water chiller or send a heating signal to the electric heating rod or not according to a preset temperature range.

Further, in the third step, the preset temperature range is 26-30 ℃, when the water temperature in the annealing water tank is higher than 30 ℃, the industrial water chiller starts to refrigerate, and when the water temperature in the annealing water tank is lower than 26 ℃, the electric heating rod starts to heat.

Compared with the prior art, the technical scheme of the invention has the following beneficial effects: 1. the industrial water chiller has high cooling efficiency and controllable temperature; 2. a filter is added to keep the cooling water clean; 3. the water storage tank is added, so that the liquid level in the annealing water tank can be kept constant. The product quality of the welding strip is improved on the whole.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of an annealing water circulation system for round copper wire according to the present invention;

FIG. 2 is a schematic view of a filter in an annealing water circulation system for round copper wires according to the present invention;

in the above figures:

1, a water storage tank; 101 a first water inlet; 102 a first water outlet; 2, circulating a water pump; 3 a cooling device; 301 a second water inlet; 302 a second water outlet; 4, annealing the water tank; 401 a third water inlet; 402 a third water outlet; 5, annealing wheel; 6 round copper wires; 7, a filter; 701, filtering a screen; 702 filtering cotton; 8, a temperature sensor; 9 an electric heating rod; 10 three-way diverter valve.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

Referring to fig. 1, an annealing water circulation system for round copper wires comprises a water storage tank 1, a circulating water pump 2, a cooling device 3 and an annealing water tank 4, wherein an annealing wheel 5 is arranged in the annealing water tank 4, and a round copper wire 6 is wound on the annealing wheel 5; the water storage tank 1 comprises a first water inlet 101 and a first water outlet 102, and the first water inlet 101 is positioned above the first water outlet 102; the cooling device 3 comprises a second water inlet 301 and a second water outlet 302, the annealing water tank 4 comprises a third water inlet 401 and a third water outlet 402, and the third water outlet 402 is positioned above the third water inlet 401; the third water outlet 402 is higher than the first water inlet 101; the first water outlet 102 is connected with a water inlet pipe of the circulating water pump 2 through a pipeline, a water outlet pipe of the circulating water pump 2 is connected with the second water inlet 301 through a pipeline, the second water outlet 302 is connected with the third water inlet 401 through a pipeline, and the third water outlet 402 is connected with the first water inlet 101 through a pipeline.

Further, the cooling device 3 is an industrial water chiller.

Further, referring to fig. 2, a filter 7 is further disposed between the cooling device 3 and the annealing water tank 4, the filter 7 includes a housing, and a filter screen 701 and filter cotton 702 are sequentially disposed in the housing according to a water flow direction.

In the above embodiment, the filter 7 is internally provided with the filter screen 701 and the filter cotton 702, the filter screen 701 (the aperture of the filter screen 701 is 0.5-0.8 mm) filters out large-particle impurities (the diameter is larger than 0.5mm) in water, and then the filter cotton 702 filters out small-particle impurities such as copper powder in water to obtain clean water. The filter screen 701 and the filter cotton 702 are cleaned or replaced by staff regularly.

The water in the water storage tank 1 is continuously conveyed through a pipeline by the centrifugal force generated when the circulating water pump 2 works, the water is sequentially cooled by the cooling device 3 and filtered by the filter to flow to the annealing water tank 4, when the water level of the annealing water tank 4 reaches the position of the third water outlet 402, redundant cooling water flows back to the water storage tank 1 through the water return pipe, and a water circulating system is formed in a repeated way. Under the condition of a certain amount of water flowing into the annealing water tank 4, the amount of water of the cooling water flowing back to the water storage tank 1 through the third water outlet 402 is certain, so that the water level of the annealing water tank 4 can be always kept at the same position.

Further, the annealing water tank 4 is internally provided with a temperature sensor 8, the signal output end of the temperature sensor 8 is connected with the signal input end of the controller, and the first signal output end of the controller is electrically connected with the control end of the industrial water chiller.

Further, an electric heating rod 9 is arranged in the annealing water tank 4, and a second signal output end of the controller is electrically connected with a control end of the electric heating rod 9.

In the above embodiment, the annealing water tank 4 is provided with the temperature sensor 8, the signal of the temperature sensor 8 is transmitted to the controller, and the controller does not start the industrial water chiller and the electric heating rod 9 according to the preset temperature range if the water temperature is within the preset temperature range, and controls the industrial water chiller to refrigerate or the electric heating rod 9 to heat if the water temperature is outside the preset temperature range. In this way, it is ensured that the temperature of the water in the annealing water tank 4 is maintained within a suitable temperature range.

Further, the volume ratio of the water storage tank 1 to the annealing water tank 4 is 1.8-2.

Because the round copper wire 6 enters the annealing water tank 4 at a certain temperature, the water temperature in the annealing water tank 4 is continuously increased, and in addition, the water storage tank 1 has the water changing function, so the volume of the water storage tank 1 is required to be larger than that of the annealing water tank 4, and the volume ratio of the water storage tank 1 to the annealing water tank 4 is preferably 1.8-2.

Further, the water storage tank further comprises a three-way diverter valve 10, a water inlet of the three-way diverter valve 10 is connected with a water outlet pipe of the circulating water pump 2, one water outlet of the three-way diverter valve 10 is connected with a second water inlet 301, and the other water outlet of the three-way diverter valve 10 is connected to the water storage tank 1.

In the above embodiment, the water outlet of the circulating water pump 2 is connected to the three-way diverter valve 10, one water outlet of the three-way diverter valve 10 is connected to the second water inlet 301, the other water outlet of the three-way diverter valve 10 is connected to the water storage tank 1, and the water flow flowing into the annealing water tank 4 can be indirectly adjusted by adjusting the three-way diverter valve 10.

(II) a water circulation method based on an annealing water circulation system for round copper wires, wherein the water circulation method comprises the following steps:

firstly, a water storage tank 1, a circulating water pump 2, an industrial water chiller, a filter 7 and an annealing water tank 4 are sequentially connected through pipelines, and a welding strip is led out upwards after bypassing an annealing wheel 5 from top to bottom;

step two, starting the circulating water pump 2, starting the welding strip tinning integrated machine after water flows out of the annealing water tank 4 from the third water outlet 402 and flows into the water storage tank 1 from the first water inlet 101, and rotating a reel;

and step three, the temperature sensor 8 acquires the real-time water temperature T in the annealing water tank 4 and sends the real-time water temperature T to the controller, and the controller judges whether to send a refrigeration signal to the industrial water chiller or send a heating signal to the electric heating rod 9 or not according to a preset temperature range.

Further, in the third step, the preset temperature range is 26-30 ℃, when the temperature of the water in the annealing water tank 4 is higher than 30 ℃, the industrial water chiller starts to refrigerate, and when the temperature of the water in the annealing water tank 4 is lower than 26 ℃, the electric heating rod 9 starts to heat.

Although the present invention has been described in detail in this specification with reference to specific embodiments and illustrative embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Accordingly, such modifications and improvements are intended to be within the scope of this invention as claimed.