Improved hydrogen spraying cooling device

Abstract

The utility model relates to a production device of copper and copper alloy strips, in particular to an improved hydrogen spraying cooling device. The technical problem that an existing hydrogen spraying cooling device cannot adjust the hydrogen spraying flow of the middle portion and the side portion of the strip respectively is solved. The utility model discloses an improved hydrogen spraying cooling device which comprises a conveying cooling box body, a cooler, a fan and a motor for driving the fan, the interior of the conveying cooling box body is divided into an upper cavity, a lower cavity and a conveying cavity located between the upper cavity and the lower cavity, the conveying cavity is horizontally provided with a conveying device, and the conveying cavity is sequentially communicated with a cooler and a fan through pipelines; air knives corresponding to the conveying device are arranged in the upper cavity and the lower cavity from front to back; an air outlet of the fan is divided into four pipelines which extend into the front end and the rear end of the upper cavity and the front end and the rear end of the lower cavity respectively, the four pipelines are evenly divided into three independent ventilation channels before entering the upper cavity and the lower cavity, the three independent ventilation channels are arranged in the direction perpendicular to the conveying direction of the conveying device, and a valve is arranged at an inlet of each independent ventilation channel.

Description

TECHNICAL FIELD

[0001] The utility model relates to copper and copper alloy strip production device, concretely to an improved hydrogen cooling device. BACKGROUND

[0002] Copper and copper alloy strip, especially thin strip, requires using foreign imported equipment air cushion type continuous annealing furnace or domestic roller type continuous annealing furnace in heat treatment process, after heating by muffle pipe, the strip enters hydrogen cooling device (such as Figures 5-8 As shown) in protective gas atmosphere, hydrogen is supplemented in upper cavity from the above of strip outlet direction through ammonia decomposition gas supplement port, the gas in upper cavity and lower cavity has certain pressure, and the air duct of upper cavity and lower cavity is a whole, and the strip is cooled from the air knife, and the decomposed gas runs to the both sides of cavity, and is sent to upper cavity and lower cavity through pipeline by centrifugal fan, passes water-cooled air radiator first, and the water takes away heat from the radiator, realizes decomposed gas cooling, and is then sent to upper cavity and lower cavity through centrifugal fan outlet, and forms the circulation of decomposed gas. SUMMARY

[0003] The utility model discloses to solve the technical problem that the current hydrogen cooling device cannot adjust hydrogen flow of the middle part and the edge of the strip respectively, and provides an improved hydrogen cooling device.

[0004] The utility model discloses the following technical scheme is adopted: an improved hydrogen cooling device, including conveying cooling box, cooler, fan and the motor of driving fan, the conveying cooling box is divided into upper cavity, lower cavity and the conveying cavity between upper cavity and lower cavity, and upper cavity is equipped with the import of supplementing decomposed gas, and the conveying cavity is through with the import and export of conveying cooling box, and conveying cavity is horizontally equipped with conveying device, and conveying cavity is communicated in proper order cooler and fan through pipeline, upper cavity and lower cavity are all equipped with the air knife corresponding with conveying device from front to back, the air outlet of fan divides four tube routes, and respectively extends into the front end and rear end of upper cavity, lower cavity, and four tube routes enter upper cavity, lower cavity, and are all divided into three independent ventilation channels and are arranged along the vertical conveying direction of conveying device, and are equipped with the valve door in every independent ventilation channel entrance.

[0005] Preferably, the air knife corresponding to the middle ventilation channel is arranged closely, and the air knife corresponding to the two side ventilation channels is arranged loosely.

[0006] Preferably, the ventilation channel extending into the upper cavity extends into the inside of the upper cavity from top to bottom, and the ventilation channel extending into the lower cavity extends into the inside of the lower cavity from bottom to top.

[0007] Preferably, the fan is a variable frequency fan.

[0008] Preferably, the valve is a butterfly valve.

[0009] Preferably, the cooler is a water-cooled air radiator.

[0010] The utility model discloses a hydrogen injection cooling device, which is improved on the basis of the original hydrogen injection cooling device.

[0011] The utility model discloses a hydrogen injection cooling device, which is improved on the basis of the original hydrogen injection cooling device. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The utility model discloses a hydrogen injection cooling device, which is improved on the basis of the original hydrogen injection cooling device.

[0013] Figure 2 The utility model discloses a hydrogen injection cooling device, which is improved on the basis of the original hydrogen injection cooling device. Figure 1 The utility model discloses a hydrogen injection cooling device, which is improved on the basis of the original hydrogen injection cooling device.

[0014] Figure 3 The utility model discloses a hydrogen injection cooling device, which is improved on the basis of the original hydrogen injection cooling device. Figure 1 The utility model discloses a hydrogen injection cooling device, which is improved on the basis of the original hydrogen injection cooling device.

[0015] Figure 4 The utility model discloses a hydrogen injection cooling device, which is improved on the basis of the original hydrogen injection cooling device.

[0016] Figure 5 The utility model discloses a hydrogen injection cooling device, which is improved on the basis of the original hydrogen injection cooling device.

[0017] Figure 6 The utility model discloses a hydrogen injection cooling device, which is improved on the basis of the original hydrogen injection cooling device. Figure 5 The utility model discloses a hydrogen injection cooling device, which is improved on the basis of the original hydrogen injection cooling device.

[0018] Figure 7 The utility model discloses a hydrogen injection cooling device, which is improved on the basis of the original hydrogen injection cooling device. Figure 5 The utility model discloses a hydrogen injection cooling device, which is improved on the basis of the original hydrogen injection cooling device.

[0019] Figure 8 The utility model discloses a hydrogen injection cooling device, which is improved on the basis of the original hydrogen injection cooling device.

[0020] 1-upper chamber, 2-lower chamber, 3-conveying chamber, 4-cooler, 5-fan, 6-frequency motor, 7-air inlet, 8-compensation decomposition inlet, 9-butterfly valve, 10-air knife, 11-power frequency motor. DETAILED DESCRIPTION

[0021] The utility model relates to copper and copper alloy strips, in particular to red copper and copper alloys with a thickness of 0.1mm-0.6mm.

[0022] When processing copper and copper alloy strips, especially thin strips, the heat treatment process requires the use of imported air cushion continuous annealing furnaces or domestic roller-type continuous annealing furnaces. After heating, the strips must be cooled during the cooling phase, requiring strict control over the cooling rate and decomposition gas flow rate. Through research, our company has modified the hydrogen spray cooling section. The air duct of the hydrogen spray cooling section has been converted into three independent ventilation channels. A butterfly valve has been added to the entrance of each independent ventilation channel to control the flow of decomposition gas entering. Each air duct corresponds to the edge, middle, and edge of the strip. Due to the different cooling rates at the edge and middle, the cross-sectional grain uniformity of the strip is affected. By adjusting the fan frequency and the opening of the air duct, the cross-sectional grain uniformity of the strip can be greatly improved, thereby increasing the yield rate.

[0023] The present invention is further described below through examples.

[0024] Example 1 Figures 1-4 As shown, an improved hydrogen spray cooling device includes a transport cooling box, a cooler 4, a fan 5, and a motor driving the fan 5. The transport cooling box is internally divided into an upper chamber 1, a lower chamber 2, and a transport chamber 3 located between the upper and lower chambers. The upper chamber 1 is provided with a supplementary decomposition gas inlet 8 (equipped with a valve). The transport chamber 3 is connected to the inlet and outlet of the transport cooling box. A transport device is horizontally installed in the transport chamber 3, and the transport chamber 3 is connected to the cooler 4 and the fan 5 in sequence through pipes. The upper chamber 1 and the lower chamber 2 are both equipped with air knives 10 corresponding to the transport device from front to back. The fan outlet branches into four pipelines, extending into the front and rear ends of the upper chamber 1 and the lower chamber 2, respectively. Before entering the upper and lower chambers, the four pipelines are divided into three independent ventilation channels and arranged perpendicular to the transport direction of the transport device. A valve is installed at the entrance (air inlet 7) of each independent ventilation channel. The air knife for the upper chamber 1 is located at the bottom of the upper chamber, and the air knife for the lower chamber 2 is located at the top of the lower chamber.

[0025] Embodiment 2 The air knives 10 are arranged in multiple rows and front to back, with multiple air knives in each row. The air knives 10 corresponding to the middle ventilation channel are arranged closely, while the air knives 10 corresponding to the ventilation channels on both sides are arranged loosely.

[0026] Example 3 Figure 1 、 2It can be seen that the ventilation channel extending into the upper chamber 1 extends from top to bottom into the interior of the upper chamber 1, and the ventilation channel extending into the lower chamber 2 extends from bottom to top into the interior of the lower chamber 2.

[0027] In the embodiment 4, the fan is a variable frequency fan 6, the valve is a butterfly valve 9, and the cooler 4 is a water-cooled air radiator.

[0028] The device works as follows: the device is a component of a continuous annealing furnace unit, hydrogen injection cooling is hydrogen injection cooling of the strip after heating by a muffle pipe into a protective gas atmosphere, and the hydrogen injection cooling device performs strong cooling according to process requirements. The hydrogen injection cooling device is supplemented with ammonia decomposition gas from the top of the strip outlet direction, and the gas in the upper and lower chambers has a certain pressure. The hydrogen injection cooling device is cooled by the strip, and the decomposition gas is discharged to the chamber on both sides. The decomposition gas is circulated by the centrifugal fan through the pipeline, passes through the water-cooled air radiator first, and the water takes away the heat from the radiator to realize the cooling of the decomposition gas, and then is sent to the upper and lower chambers through the outlet of the centrifugal fan to form the circulation of the decomposition gas.

[0029] The utility model mainly has two transformations: first, the strip after heating by a muffle pipe enters the hydrogen injection cooling device in a protective gas atmosphere, and an ammonia decomposition gas supplement port is arranged above the strip outlet direction to supplement the upper chamber. The upper and lower chamber air ducts of the hydrogen injection cooling device in the upper and lower chambers are transformed into three independent ventilation channels, a butterfly valve is added at the inlet of each independent ventilation channel to control the flow of the decomposition gas, and each air duct corresponds to the edge, middle and edge of the strip. Since the cooling speeds of the edge and middle are different, the uniformity of the cross-sectional grains of the strip is affected. The decomposition gas is discharged from the air knife to cool the strip, and the decomposition gas is discharged to the chamber on both sides. The decomposition gas is circulated by the centrifugal fan through the pipeline, passes through the water-cooled air radiator first, and the water takes away the heat from the radiator to realize the cooling of the decomposition gas, and then is sent to the upper and lower chambers through the outlet of the centrifugal fan to form the circulation of the decomposition gas.

[0030] Second, the power frequency fan is replaced by a variable frequency centrifugal fan. According to the heat absorption of different strips, the cooling flow of the fan is adjusted to greatly improve the cooling uniformity and cooling degree of the strip, thereby improving the yield.

Claims

1. An improved hydrogen injection cooling device, comprising a conveying cooling box, a cooler (4), a fan (5) and a motor driving the fan (5); the conveying cooling box is divided into an upper cavity (1), a lower cavity (2) and a conveying cavity (3) between the upper and lower cavities; the upper cavity (1) is provided with a make-up and decomposition gas inlet (8); the conveying cavity (3) is communicated with the inlet and outlet of the conveying cooling box; a conveying device is horizontally arranged in the conveying cavity (3); the conveying cavity (3) is sequentially communicated with the cooler (4) and the fan (5) through pipelines; the upper cavity (1) and the lower cavity (2) are both provided with air knives (10) corresponding to the conveying device from front to back; characterized in that, The fan outlet divides into four pipelines, which respectively extend into the front end and rear end of the upper cavity (1) and the lower cavity (2), and the four pipelines are divided into three independent ventilation channels before entering the upper and lower cavities and are arranged along the direction perpendicular to the conveying direction of the conveying device.

2. An improved hydrogen-cooled unit as claimed in claim 1, wherein, The air knives (10) corresponding to the middle ventilation channel are arranged densely, and the air knives (10) corresponding to the two side ventilation channels are arranged sparsely.

3. An improved hydrogen-cooled unit as claimed in claim 1 or 2, wherein, The ventilation channel extending into the upper cavity (1) extends into the inside of the upper cavity (1) from top to bottom; and the ventilation channel extending into the lower cavity (2) extends into the inside of the lower cavity (2) from bottom to top.

4. An improved hydrogen-cooled unit as claimed in claim 1 or 2, wherein The fan is a variable frequency fan (6).

5. An improved hydrogen-cooled unit as claimed in claim 3, wherein, The fan is a variable frequency fan (6).

6. An improved hydrogen-cooled unit as claimed in claim 1 or 2, wherein The valve is a butterfly valve (9).

7. An improved hydrogen-cooled unit as claimed in claim 5 wherein, The valve is a butterfly valve (9).

8. An improved hydrogen-cooled unit as claimed in claim 1 or 2, wherein, The cooler (4) is a water-cooled air radiator.

9. An improved hydrogen-cooled unit as claimed in claim 7, wherein, The cooler (4) is a water-cooled air radiator.

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