Cooling device with kinetic energy recovery function and submerged arc furnace

Abstract

The utility model relates to the technical field of industrial energy conservation, in particular to a cooling device with a kinetic energy recovery function and a submerged arc furnace, a cooling circulation component and at least one kinetic energy recovery component are arranged in the device, the liquid outlet end of the cooling circulation component is connected with the liquid inlet end of a smelting furnace, and the liquid inlet end of the cooling circulation component is connected with the liquid outlet end of the smelting furnace. Each kinetic energy recovery component comprises a conversion assembly and an output assembly, one end of each conversion assembly is installed on a pipeline between the liquid outlet end of the smelting furnace and the liquid inlet end of the cooling circulation component, and the other end of each conversion assembly is in transmission connection with the corresponding output assembly. Thus, the conversion assembly is installed on the pipeline between the liquid outlet end of the smelting furnace and the liquid inlet end of the cooling circulation component, the conversion assembly is driven by the cooling liquid to convert kinetic energy contained in the cooling liquid into mechanical energy and transmit the mechanical energy to the output assembly, and the output assembly converts the mechanical energy into electric energy or directly drives external equipment. Kinetic energy generated when the cooling liquid returns to the low-level water source is recycled, and therefore the utilization efficiency of energy is improved.

Description

Technical Field

[0001] This utility model relates to the field of industrial energy-saving technology, and in particular to a cooling device and a submerged arc furnace with kinetic energy recovery function. Background Technology

[0002] Submerged arc furnaces, electric arc furnaces, blast furnaces, reverberatory furnaces, and flash furnaces are key equipment in the metallurgical industry for high-temperature processes such as metal extraction and alloy preparation. These furnaces generate a large amount of heat during operation, causing components such as the furnace shell, furnace wall, and furnace cover to be in a high-temperature state for a long time, which can easily lead to distortion and deformation, seriously affecting the stability and safety of the equipment operation.

[0003] To ensure the safe operation of the smelting furnace, a circulating coolant system is typically used for cooling. In practical applications, due to limitations in the furnace's installation location and process layout, the coolant source (such as a water tank or cooling tower) is usually lower than the furnace height. It's difficult to rely on high potential energy to drive water flow to the parts of the furnace that need cooling. The coolant must first be forcibly pumped to these areas using equipment. After absorbing heat from the furnace, the coolant returns to the lower water source along the cooling channels for the next cycle. This forced circulation method effectively compensates for the insufficient natural potential energy of the lower water source, ensuring the necessary cooling effect.

[0004] However, this circulating coolant cooling method for smelting furnaces has significant drawbacks: after the coolant completes its cooling task, when it returns from the high-level smelting furnace to the low-level water source, the large amount of gravitational potential energy contained in the coolant at the high level will be converted into kinetic energy during the flow process. This large amount of kinetic energy is only used to drive the coolant to flow in the pipes, and is ultimately lost at the outlet of the cooling channel due to water flow impact, friction and other dissipation. It is not effectively recovered, resulting in energy waste. Utility Model Content

[0005] In view of this, it is necessary to provide a cooling device and an electric arc furnace with kinetic energy recovery function, which can recover a large amount of kinetic energy generated when the coolant returns from a high place to a low water source, thereby improving the energy utilization efficiency.

[0006] In a first aspect, this utility model provides a cooling device with kinetic energy recovery function, including a cooling circulation component and at least one kinetic energy recovery component. The outlet end of the cooling circulation component is connected to the inlet end of a smelting furnace to send coolant into the smelting furnace to cool it down. The inlet end is connected to the outlet end of the smelting furnace to recover coolant from the smelting furnace. Each kinetic energy recovery component includes a conversion component and an output component. One end of the conversion component is installed on a pipeline between the outlet end of the smelting furnace and the inlet end of the cooling circulation component, and the other end is connected to the output component for transmission. The conversion component converts the kinetic energy contained in the coolant into mechanical energy and transmits it to the output component. The output component converts the received mechanical energy into electrical energy or directly drives external equipment.

[0007] Preferably, the cooling circulation component includes a cooling tower, a water storage tank, and a water pump. The inlet end of the cooling tower is connected to the outlet end of the smelting furnace to receive the coolant in the smelting furnace and reduce the temperature of the coolant. The outlet end of the cooling tower is connected to the inlet end of the water storage tank to send the cooled coolant to the water storage tank for storage. The input end of the water pump is connected to the outlet end of the water storage tank, and the output end is connected to the inlet end of the smelting furnace to send the coolant stored in the water storage tank to the smelting furnace.

[0008] Preferably, the conversion assembly includes a housing, a drive shaft, and an impeller. The housing is disposed on a pipeline between the outlet end of the smelting furnace and the inlet end of the cooling circulation component, and the interior of the housing is connected to the pipeline. An impeller is disposed inside the housing, with at least a portion of the blades located inside the pipeline. The kinetic energy generated when the coolant falls from a height scours the blades located inside the pipeline, causing the impeller to rotate. The impeller is mounted on one end of the drive shaft, and the other end extends from the housing and is connected to the output assembly, so that when the impeller rotates, it drives the drive shaft to rotate, transmitting mechanical energy to the output assembly.

[0009] Preferably, the output component is a generator, the power end of the generator is connected to the drive shaft to generate electrical energy under the drive of the drive shaft, and the output end of the generator is electrically connected to the electrical equipment to provide electrical energy to the electrical equipment.

[0010] Preferably, the output component is a mechanical transmission mechanism, the power end of which is connected to the drive shaft to output mechanical energy under the drive of the drive shaft.

[0011] Preferably, the cooling device with kinetic energy recovery function further includes a filter component, which is installed in the pipeline between the liquid outlet end of the smelting furnace and the kinetic energy recovery component to remove impurities in the coolant and prevent the pipeline of the cooling device with kinetic energy recovery function from becoming blocked.

[0012] Secondly, this utility model provides a submerged arc furnace, including a submerged arc furnace body and a cooling device with kinetic energy recovery function as described in the first aspect. The liquid inlet end of the submerged arc furnace body is connected to the liquid outlet end of the cooling device with kinetic energy recovery function so that coolant is sent into the submerged arc furnace body through the cooling device with kinetic energy recovery function to cool the submerged arc furnace body; the liquid outlet end of the submerged arc furnace body is connected to the liquid inlet end of the cooling device with kinetic energy recovery function so that coolant is sent to the cooling device with kinetic energy recovery function.

[0013] The aforementioned cooling device with kinetic energy recovery function includes a cooling circulation component and at least one kinetic energy recovery component. The outlet end of the cooling circulation component is connected to the inlet end of the smelting furnace to deliver coolant into the smelting furnace and reduce its temperature. The inlet end is connected to the outlet end of the smelting furnace to recover coolant from the furnace. Each kinetic energy recovery component includes a conversion component and an output component. One end of the conversion component is installed on the pipeline between the outlet end of the smelting furnace and the inlet end of the cooling circulation component, and the other end is connected to the output component for transmission, so that the kinetic energy contained in the coolant can be converted through the conversion component. The energy can be converted into mechanical energy and transferred to the output component. The output component then converts the received mechanical energy into electrical energy or directly drives external equipment. Thus, by installing a conversion component on the pipeline between the outlet end of the smelting furnace and the inlet end of the cooling circulation component, the conversion component, driven by the coolant, converts the kinetic energy contained in the coolant into mechanical energy and transfers the mechanical energy to the output component. The output component then converts the mechanical energy provided by the conversion component into electrical energy or directly drives external equipment. This recovers a large amount of kinetic energy generated when the coolant returns to the low-level water source, thereby improving energy utilization efficiency. Attached Figure Description

[0014] Figure 1 This is a perspective view of the cooling device with kinetic energy recovery function according to this application.

[0015] Figure 2 This is a perspective view of the electric arc furnace of this application.

[0016] Figure 3 This is a perspective view of the kinetic energy recovery component of this application.

[0017] Figure 4 This is a cross-sectional view of the kinetic energy recovery component of this application.

[0018] Figure 5 This is a perspective view of the cooling circulation component of this application.

[0019] The diagram shows: a cooling device 10 with kinetic energy recovery function, a cooling circulation component 20, a cooling tower 21, a water storage tank 22, a water pump 23, a kinetic energy recovery component 30, a conversion component 31, a shell 311, a drive shaft 312, an impeller 313, an output component 32, a filter component 40, a submerged arc furnace 50, and a submerged arc furnace body 51. Detailed Implementation

[0020] The technical solutions and effects of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0021] Please refer to Figure 1 In a first aspect, this utility model provides a cooling device 10 with kinetic energy recovery function, including a cooling circulation component 20 and at least one kinetic energy recovery component 30. The outlet end of the cooling circulation component 20 is connected to the inlet end of a smelting furnace to send coolant into the smelting furnace to cool it down. The inlet end is connected to the outlet end of the smelting furnace to recover coolant from the furnace. Each kinetic energy recovery component 30 includes a conversion component 31 and an output component 32. One end of the conversion component 31 is installed on a pipeline between the outlet end of the smelting furnace and the inlet end of the cooling circulation component 20, and the other end is connected to the output component 32 for transmission. 31 converts the kinetic energy contained in the coolant into mechanical energy and transmits it to the output component 32. The output component 32 then converts the received mechanical energy into electrical energy or directly drives external equipment. Thus, by installing the conversion component 31 on the pipeline between the outlet end of the smelting furnace and the inlet end of the cooling circulation component 20, the conversion component 31, driven by the coolant, converts the kinetic energy contained in the coolant into mechanical energy and transmits the mechanical energy to the output component 32. The output component 32 then converts the mechanical energy provided by the conversion component 31 into electrical energy or directly drives external equipment, thereby recovering a large amount of kinetic energy generated when the coolant returns to the low-level water source, thereby improving energy utilization efficiency.

[0022] In this embodiment, the coolant used in the cooling circulation component 20 is a coolant with properties such as high temperature resistance, corrosion resistance and strong thermal conductivity, such as ethylene glycol coolant, hydrocarbon and organosilicon coolant and fluorocarbon coolant.

[0023] Please refer to Figure 2Furthermore, the cooling circulation component 20 includes a cooling tower 21, a water storage tank 22, and a water pump 23. The inlet end of the cooling tower 21 is connected to the outlet end of the smelting furnace to receive the coolant in the smelting furnace and reduce its temperature. The outlet end of the cooling tower 21 is connected to the inlet end of the water storage tank 22 to send the cooled coolant to the water storage tank 22 for storage. The input end of the water pump 23 is connected to the outlet end of the water storage tank 22, and the output end is connected to the inlet end of the smelting furnace to supply the water storage tank 22 with coolant. The coolant stored in the water tank 22 is sent to the smelting furnace. Thus, driven by the water pump 23, the coolant enters the smelting furnace from the water tank 22, then enters the cooling tower 21, and then enters the water tank 22 to complete one cycle. During this process, the coolant carries away the heat from the smelting furnace to cool it down, and dissipates the heat carried away from the smelting furnace through the cooling tower 21, thereby reducing the temperature of the coolant. Finally, it returns to the water tank 22 to enter the next cycle.

[0024] In this embodiment, the amount of coolant kinetic energy recovered can be further increased by increasing the number of conversion components 31 installed on the pipeline between the outlet end of the smelting furnace and the inlet end of the cooling circulation component 20. However, increasing the number of conversion components 31 will reduce the flow rate of the coolant. Setting too many conversion components 31 will prevent the coolant from flowing back to the water storage tank 22 in time, causing the pipeline of the cooling circulation component 20 to be blocked, resulting in the inability to reduce the temperature of the smelting furnace in time. The number of conversion components 31 needs to be set according to the actual situation. Furthermore, by setting several conversion components 31, when one conversion component 31 fails, the kinetic energy of the coolant can continue to be recovered through other conversion components 31, so as to reduce the waste of coolant kinetic energy.

[0025] In this embodiment, each conversion component 31 is staggered on both sides of the pipeline between the outlet end of the smelting furnace and the inlet end of the cooling circulation component 20 to increase the amount of kinetic energy recovered from the coolant. Specifically, when the coolant flows through the conversion component 31, the part of the coolant that directly contacts the conversion component 31 loses more kinetic energy and the flow rate decreases significantly, while the part that does not directly contact the conversion component 31 loses less kinetic energy and the flow rate decreases less. Compared with setting each conversion component 31 on one side, the staggered arrangement of the conversion components 31 can alternately recover kinetic energy from both sides of the coolant, thereby increasing the total amount of coolant kinetic energy recovered by each conversion component 31.

[0026] Please refer to Figures 3 to 4Furthermore, the conversion component 31 includes a housing 311, a drive shaft 312, and an impeller 313. The housing 311 is disposed on the pipeline between the liquid outlet end of the smelting furnace and the liquid inlet end of the cooling circulation component 20, and the interior of the housing 311 is connected to the pipeline. An impeller 313 is disposed inside the housing 311, and at least a portion of the blades of the impeller 313 are located inside the pipeline so that the kinetic energy generated when the coolant falls from a height can scour the blades located inside the pipeline, causing the impeller 313 to rotate. The impeller 313 is mounted on one end of the drive shaft 312, and the other end extends out of the housing 311 and is connected to the output component 32 so that when the impeller 313 rotates, it drives the drive shaft 312 to rotate, transmitting mechanical energy to the output component 32.

[0027] In this embodiment, the portion of the impeller 313 immersed in the pipe does not exceed half the diameter of the impeller 313, so as to ensure that the coolant can drive the impeller 313 to rotate. Specifically, when the portion of the impeller 313 located in the pipe exceeds half of the impeller 313, the coolant will apply pressure to both the front and back of the impeller 313 blades, causing the impeller 313 to be unable to rotate.

[0028] In one embodiment, the output component 32 is a generator, the power end of which is connected to the drive shaft 312 to generate electrical energy under the drive of the drive shaft 312. The output end of the generator is electrically connected to the electrical equipment to provide electrical energy to the electrical equipment, for example, by connecting the generator to the factory power grid.

[0029] In one embodiment, the output component 32 is a mechanical transmission mechanism, the power end of which is connected to the drive shaft 312 to output mechanical energy under the drive of the drive shaft 312; specifically, the mechanical transmission mechanism is a centrifugal pump to directly drive the centrifugal pump to rotate via the drive shaft 312; the mechanical transmission mechanism is a chain to transmit the mechanical energy of the drive shaft 312 to other devices via the chain.

[0030] Please refer to Figure 1 Furthermore, the cooling device 10 with kinetic energy recovery function also includes a filter component 40, which is installed in the pipeline between the liquid outlet of the smelting furnace and the kinetic energy recovery component 30 to remove impurities in the coolant and prevent the pipeline of the cooling device 10 with kinetic energy recovery function from becoming blocked.

[0031] In this embodiment, the filter element 40 is a self-cleaning filter.

[0032] Please refer to Figure 5Secondly, this utility model provides a submerged arc furnace 50, including a submerged arc furnace body 51 and a cooling device 10 with kinetic energy recovery function as described in the first aspect. The liquid inlet end of the submerged arc furnace body 51 is connected to the liquid outlet end of the cooling device 10 with kinetic energy recovery function so that coolant is sent into the submerged arc furnace body 51 through the cooling device 10 with kinetic energy recovery function to cool the submerged arc furnace 50; the liquid outlet end of the submerged arc furnace body 51 is connected to the liquid inlet end of the cooling device 10 with kinetic energy recovery function so that coolant is sent to the cooling device 10 with kinetic energy recovery function.

[0033] Example 1: Operation process of cooling device 10 with kinetic energy recovery function

[0034] 1. The coolant in the water storage tank 22 is sent to the smelting furnace by the water pump 23 to cool the smelting furnace;

[0035] 2. The coolant flows from the outlet of the smelting furnace to the filter element 40 to filter impurities in the coolant;

[0036] 3. The coolant flows down the pipe from a high position. During this process, it washes the blades inside the pipe, causing the impeller 313 to rotate, which in turn drives the drive shaft 312 to rotate, so as to convert the kinetic energy contained in the coolant into mechanical energy. At the same time, the output component 32 converts the mechanical energy into electrical energy or outputs it directly under the drive of the drive shaft 312.

[0037] 4. The coolant continues to flow along the pipeline to the inlet end of the cooling tower 21, where the cooling tower 21 cools the coolant.

[0038] 5. The cooled liquid flows from the outlet of the cooling tower 21 to the water storage tank 22 to wait for the next cycle of cooling.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooling device with kinetic energy recovery function, characterized in that, The device includes a cooling circulation component and at least one kinetic energy recovery component. The outlet end of the cooling circulation component is connected to the inlet end of the smelting furnace to deliver coolant into the smelting furnace for cooling. The inlet end is connected to the outlet end of the smelting furnace to recover coolant from the smelting furnace. Each kinetic energy recovery component includes a conversion component and an output component. One end of the conversion component is installed on the pipeline between the outlet end of the smelting furnace and the inlet end of the cooling circulation component, and the other end is connected to the output component for transmission. The conversion component converts the kinetic energy contained in the coolant into mechanical energy and transmits it to the output component. The output component converts the received mechanical energy into electrical energy or directly drives external equipment.

2. The cooling device with kinetic energy recovery function as described in claim 1, characterized in that, The cooling circulation component includes a cooling tower, a water storage tank, and a water pump. The inlet end of the cooling tower is connected to the outlet end of the smelting furnace to receive the coolant in the smelting furnace and reduce the temperature of the coolant. The outlet end of the cooling tower is connected to the inlet end of the water storage tank to send the cooled coolant to the water storage tank for storage. The input end of the water pump is connected to the outlet end of the water storage tank, and the output end is connected to the inlet end of the smelting furnace to send the coolant stored in the water storage tank to the smelting furnace.

3. The cooling device with kinetic energy recovery function as described in claim 1, characterized in that, The conversion assembly includes a housing, a drive shaft, and an impeller. The housing is disposed on a pipeline between the outlet end of the smelting furnace and the inlet end of the cooling circulation component, and the interior of the housing is connected to the pipeline. An impeller is disposed inside the housing, with at least a portion of the blades located inside the pipeline. The kinetic energy generated when the coolant falls from a height scours the blades located inside the pipeline, causing the impeller to rotate. The impeller is mounted on one end of the drive shaft, and the other end extends from the housing and is connected to the output assembly, so that when the impeller rotates, it drives the drive shaft to rotate, transmitting mechanical energy to the output assembly.

4. The cooling device with kinetic energy recovery function as described in claim 3, characterized in that, The output component is a generator, the power end of which is connected to the drive shaft to generate electrical energy under the drive of the drive shaft, and the output end of the generator is electrically connected to the electrical equipment to provide electrical energy to the electrical equipment.

5. The cooling device with kinetic energy recovery function as described in claim 3, characterized in that, The output component is a mechanical transmission mechanism, and the power end of the mechanical transmission mechanism is connected to the drive shaft to output mechanical energy under the drive of the drive shaft.

6. The cooling device with kinetic energy recovery function as described in claim 1, characterized in that, The cooling device with kinetic energy recovery function also includes a filter component, which is installed in the pipeline between the liquid outlet of the smelting furnace and the kinetic energy recovery component to remove impurities in the coolant and prevent the pipeline of the cooling device with kinetic energy recovery function from becoming blocked.

7. A submerged arc furnace, characterized in that, The device includes a submerged arc furnace body and a cooling device with kinetic energy recovery function as described in any one of claims 1 to 6. The liquid inlet end of the submerged arc furnace body is connected to the liquid outlet end of the cooling device with kinetic energy recovery function so that coolant is sent into the submerged arc furnace body through the cooling device with kinetic energy recovery function to cool the submerged arc furnace body. The liquid outlet end of the submerged arc furnace body is connected to the liquid inlet end of the cooling device with kinetic energy recovery function so that coolant is sent to the cooling device with kinetic energy recovery function.

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