A conductive cross arm gas vortex refrigeration system

Abstract

The present invention relates to the field of conductive cross arm refrigerators for electric magnesium smelting furnaces, and in particular to a conductive cross arm gas vortex refrigeration system. A gas vortex refrigeration and cooling mechanism for the conductive cross arm of an electric magnesium smelting furnace is composed of a gas vortex refrigerator and a conductive cross arm. The gas vortex refrigerator is installed at one end of the conductive cross arm of the electric magnesium smelting furnace. The conductive cross arm adopts a ventilated hollow copper air-cooled conductive cross arm. There is a ventilation passage in the air-cooled conductive cross arm. The gas vortex refrigerator is connected to the air-cooled conductive cross arm. The cold air generated by the gas vortex refrigerator is input into the air-cooled conductive cross arm through a cold air outlet pipe. The present invention adopts gas vortex refrigeration to allow high-pressure compressed gas to enter the vortex chamber and expand rapidly. The high-temperature gas generated in the vortex tube is discharged through a valve by using the principle that the temperature of the adiabatic expansion gas will decrease. The low-temperature gas flowing in the reverse direction is used to cool the conductive cross arm, making the conductive cross arm convenient and economical to cool down.

Description

Technical Field

[0001] The invention relates to the field of conductive cross-arm coolers for electric magnesium smelting furnaces, in particular to a conductive cross-arm gas vortex refrigeration system. Background Art

[0002] The conductive cross arm is an important component of the conductive system of the smelting furnace used in the production of fused magnesium. Due to the influence of the production environment and high power, it is often in a high temperature state, causing serious damage to the equipment. Therefore, water cooling is generally used in the industrial field to cool it down. Water cooling is expensive, large in size, difficult to use in the northern winter, and frequent maintenance is very difficult. Summary of the invention

[0003] In order to overcome the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a gas vortex refrigeration system for a conductive cross arm, which adopts gas vortex refrigeration to cool down, and can cool down the conductive cross arm with low-temperature gas with a temperature of 0°C to -50°C, thereby solving the problem that the conductive cross arm of the electric magnesium smelting furnace is overheated or the cooling effect is poor and the use is inconvenient through water cooling.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A conductive cross arm gas vortex refrigeration system, which consists of a gas vortex cooler and a conductive cross arm to form a gas vortex refrigeration and cooling mechanism for the conductive cross arm of an electric molten magnesium smelting furnace. The gas vortex cooler is installed at one end of the conductive cross arm of the electric molten magnesium smelting furnace. The conductive cross arm adopts a ventilated hollow copper air-cooled conductive cross arm. A ventilation passage is arranged in the air-cooled conductive cross arm. The gas vortex cooler is connected to the air-cooled conductive cross arm. The cold air generated by the gas vortex cooler is input into the air-cooled conductive cross arm through a cold air outlet pipe.

[0006] The conductive cross arm gas vortex refrigeration system, the gas vortex refrigerator includes a gas compressor, a compressed gas inlet nozzle, a vortex chamber, a hot end vortex tube, a hot gas outlet pipe, a cold end vortex tube, a hot gas recovery kettle, and a cold gas outlet pipe. The specific structure is as follows:

[0007] The gas compressor is connected to one end of the compressed gas inlet nozzle through a rubber tube with a plug and a pipe clamp, and the other end of the compressed gas inlet nozzle is welded above the vortex chamber, and the compressed gas inlet nozzle is connected to the vortex chamber; the vortex chamber is installed in the middle of the hot end vortex tube and the cold end vortex tube, and the two sides of the vortex chamber are respectively connected to the hot end vortex tube and the cold end vortex tube, the hot end vortex tube is on the left, and the cold end vortex tube is on the right; the left end of the hot end vortex tube is connected to the hot gas recovery kettle through the hot gas outlet pipe, the hot gas recovery kettle is arranged above the hot gas outlet of the hot gas outlet pipe, and a hot gas control valve is installed on the hot gas outlet pipe; the right end of the cold end vortex tube is connected to the air-cooled conductive cross arm through the cold gas outlet pipe, the cold gas outlet pipe is inserted into the gas inlet end at the lower part of one side of the air-cooled conductive cross arm, and a cold end valve is installed on the cold gas outlet pipe.

[0008] In the conductive cross arm gas vortex refrigeration system, the exhaust hole on the upper part of one side of the air-cooled conductive cross arm is equipped with a conductive cross arm exhaust pipe, and the gas heated by the air-cooled conductive cross arm passes through the conductive cross arm exhaust pipe to the exhaust system pipeline.

[0009] In the conductive cross arm gas vortex refrigeration system, a temperature sensor is arranged in the air-cooled conductive cross arm, an input end of a controller is connected to the temperature sensor, and an output end of the controller is connected to a gas compressor.

[0010] The advantages and beneficial effects of the present invention are:

[0011] 1. The present invention solves the drawbacks of the current refrigeration method that has not been generally adopted or the water-cooling refrigeration method has been adopted: large size, high cost, and difficulty in use in northern winter. The cooling medium uses air, and there is no need to build a water reservoir or perform water treatment. It can effectively prevent production accidents caused by water infiltration due to equipment cracking and economic losses caused by product waste, and can also save energy.

[0012] 2. The present invention is composed of a gas vortex refrigerator and an air-cooled conductive cross arm. The gas vortex refrigeration is adopted to make the high-pressure compressed gas enter the vortex chamber and expand rapidly. The temperature of the adiabatic expansion gas will be reduced, and the high-temperature gas generated in the vortex tube is discharged through the valve. The low-temperature gas flowing in the reverse direction is used to cool the conductive cross arm, so that the cooling of the conductive cross arm is convenient and economical. The structure is simple, and it is convenient to use and reduces maintenance. It can be used in the electric arc furnace for the production of fused magnesium. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a diagram of the conductive cross arm gas vortex refrigeration system of the present invention;

[0014] In the figure, 1 is a gas compressor, 2 is a compressed gas inlet nozzle, 3 is a vortex chamber, 4 is a hot end vortex tube, 5 is a hot gas outlet pipe, 6 is a cold end vortex tube, 7 is a hot gas recovery kettle, 8 is an air-cooled conductive cross arm, 9 is a cold gas outlet pipe, and 10 is a conductive cross arm exhaust pipe. DETAILED DESCRIPTION

[0015] The present invention is described in further detail below with reference to the accompanying drawings.

[0016] like Figure 1 As shown, the conductive cross arm gas vortex refrigeration system of the present invention is composed of a gas vortex refrigerator and a conductive cross arm to form a gas vortex refrigeration and cooling mechanism for the conductive cross arm of the molten magnesium smelting furnace. The gas vortex refrigerator is installed at one end of the conductive cross arm of the molten magnesium smelting furnace. The conductive cross arm adopts a ventilated hollow copper air-cooled conductive cross arm 8. The gas vortex refrigerator is connected to the air-cooled conductive cross arm 8. The low-temperature gas generated by the gas vortex refrigerator is input into the air-cooled conductive cross arm 8 through the cold air outlet pipe. The low-temperature cold air generated by the gas vortex principle is used to blow cold air into the conductive cross arm to cool the conductive cross arm. There is a ventilation passage in the air-cooled conductive cross arm 8, and the cold air can enable the air-cooled conductive cross arm 8 to obtain a good ventilation and cooling effect.

[0017] The gas vortex refrigerator mainly includes a gas compressor 1, a compressed gas inlet nozzle 2, a vortex chamber 3, a hot end vortex tube 4, a hot gas outlet pipe 5, a cold end vortex tube 6, a hot gas recovery kettle 7, a cold gas outlet pipe 9, a conductive cross arm exhaust pipe 10, etc. The specific structure is as follows:

[0018] The gas compressor 1 is connected to one end of the compressed gas inlet nozzle 2 through a rubber hose with a plug and a pipe clamp, and the other end of the compressed gas inlet nozzle 2 is welded above the vortex chamber 3, and the compressed gas inlet nozzle 2 is connected to the vortex chamber 3; the vortex chamber 3 is installed in the middle of the hot end vortex tube 4 and the cold end vortex tube 6, and the two sides of the vortex chamber 3 are respectively connected to the hot end vortex tube 4 and the cold end vortex tube 6, the hot end vortex tube 4 is on the left, and the cold end vortex tube 6 is on the right; the left end of the hot end vortex tube 4 is connected to the hot gas recovery kettle 7 through the hot gas outlet pipe 5, the hot gas recovery kettle 7 is arranged above the hot gas outlet of the hot gas outlet pipe 5, and a hot gas control valve is installed on the hot gas outlet pipe 5; the right end of the cold end vortex tube 6 is connected to the air-cooled conductive cross arm 8 through the cold gas outlet pipe 9, the cold gas outlet pipe 9 is inserted into the gas inlet end of the lower part of one side of the air-cooled conductive cross arm 8, and a cold end valve is installed on the cold gas outlet pipe 9. A conductive cross arm exhaust pipe 10 is installed at the exhaust hole on the upper part of one side of the air-cooled conductive cross arm 8, and the gas heated by the air-cooled conductive cross arm 8 passes through the conductive cross arm exhaust pipe 10 to the exhaust system pipeline.

[0019] In addition, a temperature sensor can be set in the air-cooled conductive cross arm 8, the input end of the controller is connected to the temperature sensor, and the output end of the controller is connected to the gas compressor 1. The controller determines the control execution according to the data collected by the temperature sensor and starts the gas compressor 1 in real time to work.

[0020] like Figure 1 As shown, the working principle and working process of the present invention are as follows:

[0021] The conductive cross arm gas vortex refrigeration system of the present invention adopts a gas vortex refrigeration method, utilizes the principle that the temperature of adiabatic expansion gas will decrease, obtains hot and cold separated gas in the gas vortex device, and discharges the hot gas into the hot gas recovery kettle, and utilizes the cold gas for refrigeration to cool the conductive cross arm. The high-pressure compressed gas generated by the gas compressor is sent into the vortex chamber for rapid expansion. Since the flow rate of the gas increases continuously during the expansion process, it can even reach the speed of sound. The high-speed flowing gas generates friction with the vortex tube wall during the flow process, and generates internal friction between multiple circulations in the circular tube, converting its kinetic energy into thermal energy, so that its temperature gradually increases, and this part of the high-temperature gas is discharged from the left control valve and recovered into the waste heat recovery kettle. Another part of the gas, under the action of the left hot gas control valve, generates a reverse axial direction of the flowing gas to the right side, and this part of the reversely flowing gas carries the refrigeration capacity generated in the vortex chamber to the right side, so that low-temperature gas is obtained, and this part of the cold gas is sent into the conductive cross arm to cool the conductive cross arm. There is a passage inside the conductive cross arm through which gas can flow and effectively cool the conductive cross arm, forming a process in which cold air continuously enters and hot air is discharged.

[0022] Its working process is: use the gas compressor 1 to compress the air under high pressure, and the compressed gas passes through the compressed gas inlet nozzle 2 and enters the vortex chamber 3 to expand rapidly. The high-temperature gas generated in the hot-end vortex tube 4 is discharged to the hot gas recovery kettle 7 through the hot gas control valve and the hot gas outlet pipe 5. The low-temperature gas flowing in the opposite direction enters the cold-end vortex tube 6, is output through the cold-end valve and the cold-gas outlet of the cold-gas outlet pipe 9, and enters the air-cooled conductive cross arm 8 to cool the conductive cross arm.

[0023] The results show that the cooling medium of the present invention uses air, which can solve the problems of high cost, large volume, unsuitable use in winter in the north, frequent maintenance and great difficulty of water cooling. From the perspective of economic benefits, the present invention can save the cost of building water reservoirs and water treatment, effectively prevent production accidents caused by water leakage due to equipment cracking and economic losses caused by product waste, and can also save energy, have a simple structure and reduce maintenance.

Claims

1. A conductive cross arm gas vortex refrigeration system, characterized in that: The gas vortex cooler and the conductive cross arm of the electric molten magnesium smelting furnace form a gas vortex refrigeration and cooling mechanism. The gas vortex cooler is installed at one end of the conductive cross arm of the electric molten magnesium smelting furnace. The conductive cross arm adopts a ventilated hollow copper air-cooled conductive cross arm. There is a ventilation passage in the air-cooled conductive cross arm. The gas vortex cooler is connected to the air-cooled conductive cross arm. The cold air generated by the gas vortex cooler is input into the air-cooled conductive cross arm through the cold air outlet pipe.

2. The conductive cross arm gas vortex refrigeration system according to claim 1, characterized in that: The gas vortex refrigerator includes a gas compressor, a compressed gas inlet nozzle, a vortex chamber, a hot end vortex tube, a hot gas outlet pipe, a cold end vortex tube, a hot gas recovery kettle, and a cold gas outlet pipe. The specific structure is as follows: The gas compressor is connected to one end of the compressed gas inlet nozzle through a rubber tube with a plug and a pipe clamp, and the other end of the compressed gas inlet nozzle is welded above the vortex chamber, and the compressed gas inlet nozzle is connected to the vortex chamber; the vortex chamber is installed in the middle of the hot end vortex tube and the cold end vortex tube, and the two sides of the vortex chamber are respectively connected to the hot end vortex tube and the cold end vortex tube, the hot end vortex tube is on the left, and the cold end vortex tube is on the right; the left end of the hot end vortex tube is connected to the hot gas recovery kettle through the hot gas outlet pipe, the hot gas recovery kettle is arranged above the hot gas outlet of the hot gas outlet pipe, and a hot gas control valve is installed on the hot gas outlet pipe; the right end of the cold end vortex tube is connected to the air-cooled conductive cross arm through the cold gas outlet pipe, the cold gas outlet pipe is inserted into the gas inlet end at the lower part of one side of the air-cooled conductive cross arm, and a cold end valve is installed on the cold gas outlet pipe.

3. The conductive cross arm gas vortex refrigeration system according to claim 2, characterized in that: An exhaust duct of the conductive cross arm is installed at the exhaust hole on the upper part of one side of the air-cooled conductive cross arm, and the gas heated by the air-cooled conductive cross arm passes through the exhaust duct of the conductive cross arm to the exhaust system pipeline.

4. The conductive cross arm gas vortex refrigeration system according to claim 1, characterized in that: A temperature sensor is arranged in the air-cooled conductive cross arm, an input end of a controller is connected to the temperature sensor, and an output end of the controller is connected to a gas compressor.

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