Liquid metal cooling system and liquid metal forming system

Abstract

The present invention discloses a liquid metal cooling system, comprising: a cooling and crystallization plate group, each cooling and crystallization plate (6) of which is connected to a water inlet pipe group via a respective corresponding water inlet branch pipe and is connected to a main return water pipe (5) via a respective corresponding return water branch pipe; a detection unit, which at least includes a return water branch flow detection element (17) and a return water branch water temperature detection element (15b) arranged on each return water branch pipe; a valve group unit, which at least includes a return water branch control valve (12b) arranged on each return water branch pipe; and a control unit, which is electrically connected to the detection unit and the valve group unit so as to be able to control the valve group unit according to the detection signals of the detection unit. In addition, the present invention also discloses a liquid metal forming system. The present invention realizes the function of real-time adjusting the cooling water flow, effectively ensures the on-demand supply of the cooling water, avoids the unlimited supply of the cooling water, and effectively saves the energy consumption.

Description

Technical Field

[0001] The present invention relates to a metallurgical cooling system, in particular to a liquid metal cooling system. In addition, the present invention also relates to a liquid metal forming system. Background Art

[0002] At present, in the field of metallurgy, the smelting of metals (such as ferroalloys or metallic silicon) is a casting process from liquid to solid. The liquid metal is poured into a fixed cast iron ingot mold by a ladle, and then waits for natural cooling and solidification into a solid block of a certain thickness. This process takes a long time to cool, and it is impossible to realize the automation and intelligent operation of the casting and finishing workshops in the current metallurgical industry.

[0003] With the use of the linear liquid metal forming system, the pouring of liquid metal can be achieved through continuous pouring and rapid cooling, and the temperature can be reduced to a suitable temperature for crushing and packaging, thus realizing continuous pouring operations. At the same time, the automation and intelligent operations of the pouring and finishing workshops are realized, which reduces the safety risks of operators and improves production efficiency.

[0004] However, the cooling mold of the liquid metal forming system requires a large flow of cooling water to take away the heat during the cooling process of the liquid metal and cool it down through a cooling tower. It is impossible to achieve real-time matching of cooling work during the cooling process, resulting in serious energy waste. At the same time, in order to avoid the risk of safety accidents caused by leakage of cooling water during the pouring process, it is necessary to set up a large number of intelligent detection, early warning measures and emergency response plans in the cooling system, and the structure is too complicated.

[0005] In view of this, it is necessary to design a more scientific liquid metal cooling system. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a liquid metal cooling system, which can match the cooling water flow in real time during the cooling process to save energy consumption.

[0007] Furthermore, the technical problem to be solved by the present invention is to provide a liquid metal forming system, which can match the cooling water flow in real time during the liquid metal cooling process to save energy consumption.

[0008] To solve the above technical problems, the present invention provides a liquid metal cooling system, which is characterized by comprising: a cooling and crystallization plate group, including a plurality of cooling and crystallization plates, each of the cooling and crystallization plates being connected to an inlet pipe group via its corresponding inlet branch pipe and connected to a main return pipe via its corresponding return branch pipe, the inlet pipe group being in liquid connection with a pumping module, and the main return pipe being in liquid connection with a cooling tower; a detection unit, the detection unit at least including a return branch flow detection element and a return branch water temperature detection element provided on each of the return branch pipes; a valve group unit, the valve group unit at least including a return branch control valve provided on each of the return branch pipes; and a control unit, the control unit being electrically connected to the detection unit and the valve group unit to be able to control the valve group unit according to the detection signals of the detection unit.

[0009] Preferably, the inlet pipe group includes a main inlet pipe in liquid connection with the pumping module and two parallel inlet sub-pipes connected to the main inlet pipe, each of the cooling and crystallization plates being connected to one of the two inlet sub-pipes via its corresponding inlet branch pipe, wherein the detection unit further includes an inlet flow distribution regulating valve, an inlet flow distribution detection element, an inlet pressure detection element, and an inlet temperature detection element provided on each of the inlet sub-pipes, and each of the inlet flow distribution regulating valves, inlet flow distribution detection elements, inlet pressure detection elements, and inlet temperature detection elements is electrically connected to the control unit.

[0010] Preferably, the valve group unit further includes an inlet main valve provided on the main inlet pipe and a return main valve provided on the main return pipe, the detection unit further includes a return total flow detection element provided on the main return pipe, and a one-way check valve is further provided on the main return pipe, wherein the inlet main valve, the return main valve, and the return total flow detection element are electrically connected to the control unit.

[0011] More preferably, a bypass pipeline is further connected between the upstream pipe section of the inlet main valve on the main inlet pipe and the downstream pipe section of the return main valve on the main return pipe, and the valve group unit further includes a bypass switch valve provided on the bypass pipeline, and the bypass switch valve is electrically connected to the control unit.

[0012] Specifically, the return branch pipe includes a return horizontal pipe section connected to the main return pipe, a return vertical pipe section connected to the return horizontal pipe section, and a return hose section connected between the return vertical pipe section and the outlet of the corresponding cooling and crystallization plate, and the return branch flow detection element and the return branch water temperature detection element are provided on the return horizontal pipe section.

[0013] Preferably, the detection unit further includes a return branch pressure detection element provided on each return branch pipe and electrically connected to the control unit.

[0014] Preferably, the valve group unit further includes an inlet branch control valve provided on each of the inlet branch pipes, and each of the inlet branch control valves is electrically connected to the control unit.

[0015] Specifically, each of the inlet branch pipes includes an inlet horizontal pipe section connected to the inlet pipe group, an inlet vertical pipe section connected to the inlet horizontal pipe section, and an inlet hose section connected between the inlet vertical pipe section and the inlet of the corresponding cooling and crystallization plate, wherein the inlet branch control valve on each of the inlet branch pipes is provided on the inlet horizontal pipe section.

[0016] Preferably, the bottom of each of the inlet branch pipes is connected to the inlet side drainage pipeline via a corresponding maintenance discharge valve, the bottom of each of the return water branch pipes is connected to the return water side drainage pipeline via a corresponding maintenance discharge valve, the inlet side drainage pipeline and the return water side drainage pipeline are both connected to a drainage communication pipe, and the drainage communication pipe is connected to the main return water pipe via a quick discharge valve, wherein the valve group unit includes each of the maintenance discharge valves and the quick valves, and each of the maintenance discharge valves and the quick valves is electrically connected to the control unit.

[0017] Preferably, the pumping module is a variable pump module, and the variable pump module is electrically connected to the control unit to control the variable pump module to adjust the pumping volume through the control unit.

[0018] Typically, the liquid metal cooling system is an iron alloy or metal silicon cooling system.

[0019] Based on the technical solution of the above liquid metal cooling system, the present invention further provides a liquid metal forming system, which is characterized in that it includes the liquid metal cooling system of any one of the above technical solutions.

[0020] Through the above basic technical solution of the present invention, the liquid metal cooling system of the present invention realizes the function of adjusting the cooling water flow rate in real time. Since the present invention is provided with a return water branch flow detection element, a return water branch water temperature detection element and a return water branch control valve electrically connected to the control unit on each return water branch, before the pouring operation, according to the cooling basic set flow rate value preset by the control unit, by adjusting the opening size of the return water branch control valve on the return water branch corresponding to each cooling crystallization plate, and through the detection of the return water branch flow detection element on each water outlet branch, the flow rate of the water flowing through each cooling crystallization plate is adjusted to make it conform to the cooling basic set flow rate value. During the pouring of liquid metal, when the return water branch water temperature detection element detects that the water temperature of the water outlet branch of a certain cooling crystallization plate is higher than the rated value set by the control unit, the control unit will control the opening amount of the return water branch control valve on this return water branch to increase the flow rate of this return water branch and ensure the cooling effect of the cooling crystallization plate on this path. At the same time, according to the ratio set by the control unit, the flow rates of the remaining return water branches are automatically reduced, so that the total flow rate value and water pressure value of the cooling system are basically constant. This effectively ensures the supply of cooling water on demand, avoids the unrestricted supply of cooling water without planning, and effectively saves energy consumption.

[0021] In the preferred mode of setting the bypass pipeline in the present invention, when it is found that a leakage fault occurs in the main pipeline or a certain cooling crystallization plate, for example, when the control unit receives that the detected values of the water pressure and flow rate of the main pipeline or the return water branch of a certain cooling crystallization plate are lower than the set values, the control unit opens the bypass switch valve located on the bypass pipeline, and at the same time closes the main water inlet valve on the main water inlet pipe and the main water return valve on the main water return pipe. The pumping module pumps cooling water to directly connect the main water inlet pipe and the main water return pipe through the bypass pipeline, and the cooling water will no longer enter the rear pipeline with the leakage point and the pipeline connected to the cooling crystallization plate.

[0022] Furthermore, when a leakage fault occurs, the maintenance discharge valve and the quick discharge valve can be opened at the same time, so that the cooling water in the cooling crystallization plate and the cooling water in the return water branch are quickly discharged, reducing the safety risk. In addition, when the cooling crystallization plate in the cooling system needs to be maintained, the inlet branch control valve on the inlet branch corresponding to each cooling crystallization plate and the return water branch control valve on the return water branch can be closed to block the cooling water, and the maintenance discharge valve and the quick discharge valve can be opened to empty the internal water of the cooling crystallization plate, which is convenient for maintenance and replacement, and at the same time avoids frequent start-stop of the pumping module, achieving an energy-saving effect.

[0023] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. Description of the Drawings

[0024] The following drawings are used to provide a further understanding of the present invention and form a part of the specification. Together with the following specific embodiments, they are used to explain the present invention. However, the protection scope of the present invention is not limited to the following drawings and specific embodiments. In the drawings:

[0025] Figure 1 is a perspective structural schematic diagram of the liquid metal cooling system according to the specific embodiment of the present invention;

[0026] Figure 2 is a top view structural schematic diagram of the liquid metal cooling system according to the specific embodiment of the present invention; and

[0027] Figure 3 is Figure 2 a side view structural schematic diagram of the liquid metal cooling system shown.

[0028] Explanation of the reference numerals in the drawings of the present invention:

[0029] a cooling tower; b pumping module;

[0030] 1 main inlet pipe; 2 bypass switch valve;

[0031] 3 bypass pipeline; 4 inlet flow distribution detection element;

[0032] 5 main return pipe; 6 cooling crystallization plate;

[0033] 7a inlet hose section; 7b return hose section;

[0034] 8a inlet riser section; 8b return riser section;

[0035] 9a inlet horizontal pipe section; 9b return horizontal pipe section;

[0036] 10 maintenance drain valve; 11 inlet sub-pipe;

[0037] 12a inlet branch control valve; 12b return branch control valve;

[0038] 13a return side drain pipeline; 13b inlet side drain pipeline;

[0039] 14 drain connection pipe; 15a inlet temperature detection element;

[0040] 15b return branch water temperature detection element; 16a inlet pressure detection element;

[0041] 16b return branch pressure detection element; 17 return branch flow detection element;

[0042] 18 one-way check valve; 19 quick drain valve;

[0043] 20 Inlet flow distribution regulating valve; 21 Total return water valve;

[0044] 22 Total inlet water valve; 23 Total return water flow detection element. Specific embodiments

[0045] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present invention, and the protection scope of the present invention is not limited to the following specific embodiments.

[0046] First of all, it should be noted that in the description of the following specific embodiments, the terms "upstream" and "downstream" are defined according to the flow direction of the cooling water. Generally, according to the flow direction of the cooling water, the position where the cooling water arrives first is "upstream" relative to the position where it arrives later, and the position where it arrives later is "downstream". In addition, within the technical concept scope of the present invention, "electrically connected" is not limited to wired connection, and there may also be wireless connections with control or signal transmission relationships, etc. Further, although in the following description, the present invention is described with liquid metals such as ferroalloys and metallurgical silicon, the liquid metal cooling system of the present invention can be applied to the cooling of various liquid metals in the metallurgical field, and such replacements of the application scope should all fall within the protection scope of the present invention. Further, in the following description, if there is no special description, the relevant flow detection elements, water temperature detection elements, and pressure detection elements should all be electronic elements capable of detecting and transmitting signals, such as flow sensors, temperature sensors, pressure sensors, etc. The relevant valves are generally electrically controlled valves or pneumatically controlled valves that can be electrically connected to the control unit and controlled by the control unit. Such electrically controlled switch valves, electrically controlled flow regulating valves, pneumatic switch valves, etc. are widely used in various fields and will not be elaborated herein.

[0047] See Figures 1 to 3 , a liquid metal cooling system mainly includes a cooling and crystallization plate group, a detection unit, a valve group unit, and a control unit. The cooling and crystallization plate group includes a plurality of cooling and crystallization plates 6. Each cooling and crystallization plate 6 is connected to the inlet pipe group via its respective corresponding inlet branch pipe and is connected to the main return water pipe 5 via its respective corresponding return water branch pipe. The above inlet pipe group is liquid-connected to the pumping module b, and the main return water pipe is liquid-connected to the cooling tower a. The above detection unit at least includes a return water branch flow detection element 17 and a return water branch water temperature detection element 15b provided on each return water branch pipe. The above valve group unit at least includes a return water branch control valve 12b provided on each return water branch pipe. The above control unit is electrically connected to the detection unit and the valve group unit to be able to control the valve group unit according to the detection signals of the detection unit.

[0048] In the above basic technical solution of the present invention, the liquid metal cooling system of the present invention can realize the function of real-time adjustment of the cooling water flow rate. In the present invention, a return water branch flow rate detection element 17, a return water branch water temperature detection element 15b, and a return water branch control valve 12b electrically connected to the control unit are provided on each return water branch. Thus, during the pouring operation, according to the cooling basic set flow rate value preset by the control unit, by adjusting the opening size of the return water branch control valve 12b on the return water branch corresponding to each cooling crystallization plate 6, and through the detection of the return water branch flow rate detection element 17 on each return water branch, the cooling water flow rate flowing through each cooling crystallization plate 6 is adjusted to conform to the cooling basic set flow rate value. During the process of pouring liquid metal, when the return water branch water temperature detection element 15b detects that the water temperature of the return water branch of a certain cooling crystallization plate 6 is higher than the rated value set by the control unit, the control unit will control the opening amount of the return water branch control valve 12b on this return water branch to increase the flow rate of this return water branch and ensure the cooling effect of this cooling crystallization plate 6. At the same time, according to the ratio set by the control unit, the flow rates of the remaining return water branches are automatically reduced, so that the total flow rate value and water pressure value of the cooling system are basically constant. This effectively ensures the supply of cooling water on demand, avoids the unrestricted supply of a large amount of cooling water without planning, and effectively saves energy consumption.

[0049] On the basis of the above basic implementation manner of the present invention, as a preferred solution, the pumping module b can adopt a variable pump module, and the variable pump module is electrically connected to the control unit to control the variable pump module to adjust the pumping volume through the control unit. In addition, the pumping module b can also include a fixed-displacement pump and a variable-frequency motor driving the fixed-displacement pump, and the variable-frequency motor is electrically connected to the control unit. The control unit controls the rotation speed of the variable-frequency motor, thereby controlling the pumping volume of the fixed-displacement pump. This is familiar to those skilled in the art. The pumping flow rate can be adjusted by both the variable pump or the variable-frequency motor. Thus, during the actual operation process, when it is necessary to increase the total flow rate of the cooling system, the control unit can control the pumping module to increase the total pumping flow rate.

[0050] See Figure 2, as an alternative water inlet type, the above-mentioned water inlet pipe group may include a main water inlet pipe 1 liquid-connected to the pumping module b and two parallel water inlet sub-pipes 11 connected to the main water inlet pipe 1. Each cooling and crystallization plate 6 may be connected to one of the two water inlet sub-pipes 11 via its corresponding water inlet branch pipe. Wherein the above-mentioned detection unit may further include water inlet flow distribution regulating valves 20, water inlet flow distribution detection elements 4, water inlet pressure detection elements 16a and water inlet temperature detection elements 15a provided on each water inlet sub-pipe 11. Each water inlet flow distribution regulating valve 20, water inlet flow distribution detection element 4, water inlet pressure detection element 16a and water inlet temperature detection element 15a are electrically connected to the control unit. In this alternative embodiment, the cooling water in the main water inlet pipe 1 is divided into two paths and transported to the cooling and crystallization plates 6 at different positions through the two water inlet sub-pipes 11. This layout type is more convenient for targeted adjustment of the flow distribution of the cooling water. At the same time, when a certain cooling and crystallization plate fails, it is easier to detect and repair. At this time, only the operation of one water inlet sub-pipe 11 needs to be stopped, and the other water inlet sub-pipe 11 can still work normally. At the same time, the flow rate, water temperature and water pressure of the cooling water on each water inlet sub-pipe 11 are monitored in real time to ensure that the cooling water meets the cooling conditions.

[0051] Further, typically, the above-mentioned valve group unit may further include a main water inlet valve 22 provided on the main water inlet pipe 1 and a main water return valve 21 provided on the main water return pipe 5. The detection unit further includes a main water return total flow detection element 23 provided on the main water return pipe 5. Wherein the main water inlet valve 22, the main water return valve 21 and the main water return total flow detection element 23 are electrically connected to the control unit. In addition, a one-way check valve 18 may be provided on the main water return pipe 5. The main water inlet valve 22 is provided on the main water inlet pipe 1 and the main water return valve 21 is provided on the main water return pipe 5, so that when an unknown fault occurs in the cooling system, the main water inlet valve 22 and the main water return valve 21 can be closed to stop the operation of the entire cooling system. In addition, the main water return flow detection element 23 can detect the total main water return flow of the entire cooling system. When the total main water return flow does not match the total main water inlet flow, it is convenient to judge that there is an unknown leakage point in the system and further troubleshooting is required. It should be noted here that the one-way check valve 18 can adopt a common one-way valve, which mainly prevents the cooling water discharged from the cooling and crystallization plate 6 from flowing back, that is, it conducts in the forward direction and cuts off in the reverse direction. Such a one-way check valve 18 can be an independent valve outside the valve group unit of the present invention, which is not connected to the control unit and mainly functions relying on the mechanical structure.

[0052] As a particularly preferred embodiment, see Figure 1, a bypass pipeline 3 may also be connected between the upstream pipe section of the total water inlet valve 22 on the main water inlet pipe 1 and the downstream pipe section of the total water return valve 21 on the main water return pipe 5. The valve group unit may further include a bypass switch valve 2 provided on the bypass pipeline 3, and the bypass switch valve 2 is electrically connected to the control unit. In this preferred manner, when a leakage fault occurs in the main pipeline or a certain cooling and crystallization plate, for example, when the control unit receives the detection values of the water pressure and flow rate of the main pipeline or the water return branch pipe of a certain cooling and crystallization plate that are lower than the set values, the control unit opens the bypass switch valve 2 on the bypass pipeline 3 and closes the total water inlet valve 22 on the main water inlet pipe 1 and the total water return valve 21 on the main water return pipe 5 at the same time. The pumping module b pumps cooling water to directly connect the main water inlet pipe 1 and the main water return pipe 5 through the bypass pipeline 3, and the cooling water will no longer enter the rear pipeline with the leakage point and the pipeline connected to the cooling and crystallization plate, fully ensuring the operation safety of the cooling system. That is to say, the significance of this bypass pipeline is to be used in conjunction with the total water inlet valve 22 and the total water return valve 21. When the cooling system needs to be repaired due to a fault, the total water inlet valve 22 and the total water return valve 21 can be closed without stopping the main engine of the pumping module, and at the same time, the cooling water pumped by the pumping module directly returns to the main water return pipe through the bypass pipeline. In this way, if the fault point can be found and repaired in a short time, it is possible to avoid shutting down and restarting the whole machine, and at the same time, it also avoids the cooling water of the pumping module from entering the cooling system that already has a fault, ensuring the operation safety.

[0053] As a more specific structural form, refer to Figure 1 , each water return branch pipe may include a water return horizontal pipe section 9b connected to the main water return pipe 5, a water return vertical pipe section 8b connected to the water return horizontal pipe section 9b, and a water return hose section 7a connected between the water return vertical pipe section 8b and the outlet of the corresponding cooling and crystallization plate 6. The water return branch flow detection element 17 and the water return branch water temperature detection element 15b may be provided on the water return horizontal pipe section 9b, which is more convenient for installation and can also minimize the influence of the gravity of the cooling water on the detection result during the detection process.

[0054] More preferably, in order to facilitate detecting a fault in a certain one of the cooling and crystallization plates 6, the detection unit may further include a water return branch pressure detection element 16b provided on each water return branch pipe 5 and electrically connected to the control unit. In this way, when the control unit receives the water pressure detection value of a certain cooling and crystallization plate water return branch pipe that is lower than the set value, it can conveniently and effectively identify that a certain cooling and crystallization plate has a leakage fault, so as to perform more targeted troubleshooting and avoid the need to shut down the entire system to find the fault point in the prior art.

[0055] Further, the above valve group unit may further include an inlet branch control valve 12a provided on each inlet branch pipe. Each inlet branch control valve 12a can be electrically connected to the control unit for control through the control unit. The inlet branch control valve 12a on such an inlet branch pipe can not only individually control the inlet water flow rate for each cooling crystallization plate 6, but also, when a certain cooling crystallization plate 6 fails, cooperate with the return water branch control valve 12b on the return water branch pipe. The inlet branch control valve 12a and the return water branch control valve 12b can be closed simultaneously to isolate the faulty cooling crystallization plate 6 from the entire cooling system for single-point fault repair without affecting the operation of other cooling crystallization plates in the cooling system.

[0056] Similar to the specific structure of the above return water branch pipe, refer to Figure 1 , the inlet branch pipe may also include an inlet horizontal pipe section 9a connected to the inlet pipe group, an inlet vertical pipe section 8a connected to the inlet horizontal pipe section 9a, and an inlet hose section 7a connected between the inlet vertical pipe section 8a and the inlet of the corresponding cooling crystallization plate 6. The inlet branch control valve 12a on each inlet branch pipe is provided on the inlet horizontal pipe section 9a, which is more convenient for installation. Moreover, when remotely controlling the inlet branch control valve 12a, the inlet branch control valve 12a installed on the inlet horizontal pipe section 9a responds more quickly.

[0057] As a preferred way to discharge accumulated water when a failure occurs, refer to Figure 2 , the bottom of each inlet branch pipe is connected to the inlet side drainage pipeline 13b via a corresponding maintenance discharge valve 10, and the bottom of each return water branch pipe is also connected to the return water side drainage pipeline 13a via a corresponding maintenance discharge valve 10. The inlet side drainage pipeline 13b and the return water side drainage pipeline 13a are both connected to a drainage connecting pipe 14, and the drainage connecting pipe 14 is connected to the main return water pipe 5 via a quick discharge valve 19. The valve group unit includes these maintenance discharge valves 10 and quick discharge valves 19, and each maintenance discharge valve 10 and quick discharge valve 19 are electrically connected to the control unit. In this way, when a leakage fault or other faults occur, the maintenance discharge valve 10 and the quick discharge valve 19 can be opened simultaneously to quickly discharge the cooling water in the cooling crystallization plate 6 and the cooling water in the return water branch pipe 5, reducing the safety risk. In addition, when the cooling crystallization plate 6 in the cooling system needs to be maintained, the inlet branch control valve 12a on the inlet branch corresponding to each cooling crystallization plate 6 and the return water branch control valve 12b on the return water branch can be closed to block the cooling water, and the maintenance discharge valve 10 and the quick discharge valve 19 can be opened to empty the internal water of the cooling crystallization plate 6, which is convenient for maintenance and replacement, and at the same time avoids frequent start and stop of the pumping module b, achieving an energy-saving effect.

[0058] As described above, the liquid metal cooling system of the present invention can be applied to the cooling of various hydraulic metals. Typically, the liquid metal cooling system is an iron alloy or metal silicon cooling system.

[0059] Based on the technical solution of the liquid metal cooling system of the present invention described above, the present invention further provides a liquid metal forming system, which employs the liquid metal cooling system of any of the above embodiments.

[0060] The basic embodiments and various preferred embodiments of the liquid metal cooling system of the present invention have been described above in a hierarchical and progressive manner. For a better understanding of the present invention, the following refers to Figures 1 to 3 the display in to describe a relatively comprehensive optimal embodiment of the present invention and its related operation process.

[0061] Refer to Figures 1 to 3 As shown, the pressurized cooling water enters the liquid metal cooling system of the present invention through the main inlet pipe 1. A remotely controllable total inlet valve 22 (such as a pneumatic valve) is provided at the starting section of the main inlet pipe 1, which can be used to remotely open and close the main inlet pipe 1. The initial section of the main inlet pipe 1 is divided into two paths, namely two inlet sub-pipes 11. Each of the two inlet sub-pipes 11 is provided with an inlet flow distribution regulating valve 20 capable of adjusting the flow rate. By adjusting the inlet flow distribution regulating valve 20, the cooling water in the main inlet pipe 1 can be evenly divided into two paths. Each inlet sub-pipe 11 can be provided with an inlet flow distribution detection element 4 (such as a flow sensor), an inlet pressure detection element 16a (such as a pressure sensor), and an inlet temperature detection element 15a (such as a temperature sensor). These valves and detection elements are all electrically connected to the control unit, and their changes are detected in real time through the detection elements, and the control unit performs corresponding valve action control. In the following description, if not otherwise specified, the valves and detection elements mentioned can be electrically connected to the control unit, so that the control unit can receive the detection signals of various detection elements and control the actions of each valve.

[0062] Each of the two inlet sub-pipes 11 is provided with a plurality of outlets on the side, and each outlet is connected to an inlet branch pipe. Specifically, each outlet is connected to an inlet horizontal pipe section 9a. The inlet horizontal pipe section 9a is connected to the lower end of the inlet vertical pipe section 8a. The upper end of the inlet vertical pipe section 8a is connected to an inlet hose section 7a. The inlet hose section 7a is connected to the inlet of one end of the top cooling crystallization plate 6 (generally a copper crystallization plate). Each inlet horizontal pipe section 9a can be provided with an inlet branch control valve 12a (such as an electric control stop valve) that can be remotely electrically controlled to open.

[0063] The cooling crystallization plate 6 is the cooling part of the linear liquid metal forming system. A plurality of horizontal channels are arranged inside it. High-temperature liquid metal (such as liquid ferroalloy) flows over its upper surface. The heat is transferred to the cooling water flowing through the inside of the cooling crystallization plate 6 through the high heat conductivity of the cooling crystallization plate, so as to achieve the purpose of cooling and solidifying the high-temperature liquid metal.

[0064] An outlet is arranged at the other end of the cooling crystallization plate 6. The outlet is connected to the return water branch pipe. Specifically, the outlet is connected to the return water hose section 7b. The return water hose section 7b is connected to the upper end of the return water riser section 8b. The lower end of the return water riser section 8b is connected to the return water horizontal pipe section 9b. A return water branch pipe water temperature detection element 15b (such as a temperature sensor), a return water branch pipe flow detection element 17 (such as a flow sensor), and a return water branch pipe pressure detection element 16b (such as a pressure sensor) that can be remotely detected are arranged on the return water horizontal pipe section 9b. This can conveniently remotely and real-time detect the flow rate, temperature, and water pressure of the water flowing out of each cooling crystallization plate 6.

[0065] The return water branch pipes connected to the outlets of each cooling crystallization plate are all connected to the main return water pipe 5. The main return water pipe 5 is provided with a one-way check valve 18 and a remotely controllable main return water valve 21 (such as a pneumatic stop valve) for opening and closing the main return water pipe 5. The one-way check valve 18 can simply adopt a mechanical one-way valve, which realizes the functions of forward conduction and reverse cutoff of hydraulic pressure through a mechanical structure. Therefore, the one-way check valve 18 can be not connected to the control unit and is a separate valve outside the valve group unit of the present invention.

[0066] A bypass pipeline 3 connecting the main water inlet pipe 1 and the main return water pipe 5 is arranged between the upstream pipe section of the water inlet main valve 22 of the main water inlet pipe 1 and the downstream pipeline of the main return water valve 21 on the main return water pipe 5, and a remotely controllable bypass switch valve 2 (such as a pneumatic switch valve) is arranged on the bypass pipeline 3.

[0067] In this way, all the remotely controllable actuators and detection elements (such as pneumatic valves, electric control intercepts, flow sensors, pressure sensors, water temperature sensors) in the liquid metal cooling system of the present invention are electrically connected to the control unit, for example, electrically connected to the total control unit of the liquid forming system. A plurality of safety parameter values are preset in the control unit. When the detected values are within its safe range, the cooling system can start running and pouring operations.

[0068] With this liquid metal cooling system of the present invention, the function of automatically adjusting the flow rate is actually realized. Before the pouring operation, according to the basic set values preset by the control system, by adjusting the opening size of the return water branch control valve 12b of each water outlet branch pipe of the cooling crystallization plate 6 and the detection of the return water branch flow detection element 17 of each return water branch pipe, the flow rate of the water flowing through each cooling crystallization plate 6 is adjusted to conform to the basic set value. During the pouring of the liquid metal, when it is detected that the water temperature of the return water branch pipe of a certain cooling crystallization plate 6 is higher than the rated value set by the control unit, the control unit will remotely control the opening amount of the return water branch control valve 12b according to the set parameters, increase the flow rate of this return water branch pipe, and ensure the cooling effect of the corresponding cooling crystallization plate 6. At the same time, according to the ratio set by the program, the opening amount of the return water branch control valve 12b on other return water branch pipes is controlled to automatically reduce the flow rate of the remaining return water branch pipes, ensuring that the total flow rate value and water pressure value are basically constant.

[0069] In addition, when the control unit receives the values of the water pressure and flow rate of the main pipeline or the return water branch pipe of a certain cooling crystallization plate 6 detected by the detection element, which are lower than the pressure or flow rate values set by the control unit. The control unit can open the bypass switch valve 2 on the bypass pipeline 3 between the main inlet and return water pipes, and at the same time close the inlet main valve 22 and the return water main valve 21 on the main inlet and return water pipelines. The cooling water will connect the main inlet pipe 1 and the main return water pipe 5 through the bypass pipeline 3, and the cooling water will no longer enter the rear pipeline with leakage points and the pouring cooling crystallization plate. At the same time, the quick discharge valve 19 on the drainage connecting pipe 14 connected to the main return water main pipe can be opened, and the cooling water in the cooling crystallization plate and the return water branch pipe will quickly drain through the inlet side drain pipe 13b and the return water side drain pipe 13a, reducing the safety risk.

[0070] In addition, when a certain cooling crystallization plate 6 needs to be repaired, the inlet branch control valve 12a on the inlet branch pipes on both sides of the corresponding cooling crystallization plate 6 and the return water branch control valve 12b on the return water branch pipe can be closed to block the cooling water. At the same time, the maintenance discharge valve 10 at the lower ends of the inlet riser section 8a and the return water riser section 8b discharges the water inside the cooling crystallization plate 6 into the interconnected return water side drainage pipeline 13a, the inlet side discharge pipeline 13b and the drainage connection 18, and is discharged into the main return water pipe 5 through the quick discharge valve 18, so as to facilitate maintenance and replacement. At the same time, it avoids frequent start and stop of the water pump, achieving an energy-saving effect.

[0071] As can be seen from the above description, through the unique structural design and layout method, the liquid metal cooling system of the present invention realizes the rapid cooling of liquid metal during the operation of the linear liquid metal forming system, and at the same time realizes the intelligent control, energy saving and reliable operation guarantee of the entire cooling system. The liquid metal cooling system of the present invention solves the water cooling problem of the linear liquid metal forming system, enables the rapid cooling and solidification of liquid metal during the pouring process, saves energy consumption, and controls the water flow rate of the cooling water in real time and personalized manner. The present invention can detect the leakage points, water temperature and water pressure status in the system in real time, can automatically and remotely cut off the cooling water quickly and adjust the water flow rate of the cooling water of each cooling crystallization plate in real time, ensuring the pouring efficiency and extending the service life of the main component, the copper crystallization plate, and reducing the safety risk. In addition, through the present invention, when overhauling and replacing the cooling crystallization plate of the linear liquid metal forming system, only the relevant local water circuit needs to be cut off, without affecting the water circulation of the entire system, avoiding the start and stop of high-power water pumps, and achieving the effect of energy saving.

[0072] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0073] In addition, it should be noted that, in the case of no contradiction, the various specific technical features described in the above specific embodiments can be combined in any suitable manner. To avoid unnecessary repetition, the present invention will not describe various possible combination methods separately.

[0074] In addition, any combination can be made between different embodiments of the present invention, as long as it does not violate the idea of the present invention, it should also be regarded as the content disclosed by the present invention.

Claims

1. A metallurgical liquid metal cooling system, characterized in that, Comprising: A cooling and crystallization plate group, including a plurality of cooling and crystallization plates (6), each of the cooling and crystallization plates (6) is connected to an inlet pipe group via its respective corresponding inlet branch pipe, and is connected to a main return pipe (5) via its respective corresponding return branch pipe. The inlet pipe group is hydraulically connected to a pumping module (b), and the main return pipe is hydraulically connected to a cooling tower (a); A detection unit, which at least includes a return branch flow detection element (17) and a return branch water temperature detection element (15b) provided on each of the return branch pipes; A valve group unit, which at least includes a return branch control valve (12b) provided on each of the return branch pipes; And A control unit, which is electrically connected to the detection unit and the valve group unit to be able to control the valve group unit according to the detection signals of the detection unit; Before the casting operation, according to the cooling basic set flow value preset by the control unit, by adjusting the opening size of the return branch control valve (12b) on the return branch pipe corresponding to each cooling and crystallization plate (6), and through the detection of each return branch flow detection element (17), the cooling water flow rate flowing through each cooling and crystallization plate (6) is adjusted to conform to the cooling basic set flow value; during the pouring of liquid metal, when the return branch water temperature detection element (15b) detects that the water temperature of the return branch pipe corresponding to a certain cooling and crystallization plate (6) is higher than the rated value set by the control unit, the control unit will control the opening amount of the corresponding return branch control valve (12b) to increase the flow rate of this return branch pipe, and at the same time, according to the ratio set by the control unit, automatically reduce the flow rates of the remaining return branch pipes, so that the total flow rate and water pressure value of this cooling system are basically constant.

2. The metallurgical liquid metal cooling system according to claim 1, characterized in that, The inlet pipe group includes a main inlet pipe (1) hydraulically connected to the pumping module (b) and two parallel inlet sub-pipes (11) connected to the main inlet pipe (1). Each of the cooling and crystallization plates (6) is connected to one of the two inlet sub-pipes (11) via its respective corresponding inlet branch pipe. Wherein the detection unit further includes an inlet flow distribution regulating valve (20), an inlet flow distribution detection element (4), an inlet pressure detection element (16a) and an inlet temperature detection element (15a) provided on each of the inlet sub-pipes (11). Each of the inlet flow distribution regulating valves (20), inlet flow distribution detection elements (4), inlet pressure detection elements (16a) and inlet temperature detection elements (15a) is electrically connected to the control unit.

3. The metallurgical liquid metal cooling system according to claim 2, characterized in that, The valve group unit further includes an inlet main valve (22) provided on the main inlet pipe (1) and a return main valve (21) provided on the main return pipe (5). The detection unit further includes a return total flow detection element (23) provided on the main return pipe (5), and a check valve (18) is also provided on the main return pipe (5). Wherein the inlet main valve (22), the return main valve (21) and the return total flow detection element (23) are electrically connected to the control unit.

4. The metallurgical liquid metal cooling system according to claim 3, characterized in that, A bypass pipeline (3) is also connected between the upstream pipe section of the total water inlet valve (22) on the main water inlet pipe (1) and the downstream pipe section of the total water return valve (21) on the main water return pipe (5). The valve group unit further includes a bypass switch valve (2) provided on the bypass pipeline (3), and the bypass switch valve (2) is electrically connected to the control unit.

5. The metallurgical liquid metal cooling system according to claim 1, characterized in that, The water return branch pipe includes a water return horizontal pipe section (9b) connected to the main water return pipe (5), a water return vertical pipe section (8b) connected to the water return horizontal pipe section (9b), and a water return hose section (7a) connected between the water return vertical pipe section and the outlet of the corresponding cooling and crystallization plate (6). The water return branch flow detection element (17) and the water return branch water temperature detection element (15b) are provided on the water return horizontal pipe section (9b).

6. The metallurgical liquid metal cooling system according to any one of claims 1 to 5, characterized in that, The detection unit further includes a water return branch pressure detection element (16b) provided on each water return branch pipe and electrically connected to the control unit.

7. The metallurgical liquid metal cooling system according to any one of claims 1 to 5, characterized in that, The valve group unit further includes an inlet branch control valve (12a) provided on each inlet branch pipe, and each inlet branch control valve (12a) is electrically connected to the control unit.

8. The metallurgical liquid metal cooling system according to claim 7, characterized in that, Each inlet branch pipe includes an inlet horizontal pipe section (9a) connected to the inlet pipe group, an inlet vertical pipe section (8a) connected to the inlet horizontal pipe section (9a), and an inlet hose section (7a) connected between the inlet vertical pipe section and the inlet of the corresponding cooling and crystallization plate (6). The inlet branch control valve (12a) on each inlet branch pipe is provided on the inlet horizontal pipe section (9a).

9. The metallurgical liquid metal cooling system according to any one of claims 1 to 5, characterized in that, The bottom of each inlet branch pipe is connected to the water inlet side drainage pipeline (13b) via a corresponding maintenance discharge valve (10), and the bottom of each water return branch pipe is connected to the water return side drainage pipeline (13a) via a corresponding maintenance discharge valve (10). The water inlet side drainage pipeline (13b) and the water return side drainage pipeline (13a) are both connected to a drainage connecting pipe (14), and the drainage connecting pipe (14) is connected to the main water return pipe (5) via a quick discharge valve (19). The valve group unit includes each maintenance discharge valve (10) and the quick discharge valve (19), and each maintenance discharge valve (10) and the quick discharge valve (19) are electrically connected to the control unit.

10. The metallurgical liquid metal cooling system according to any one of claims 1 to 5, characterized in that, The pumping module (b) is a variable pump module, and the variable pump module is electrically connected to the control unit to control the variable pump module to adjust the pumping volume through the control unit.

11. The metallurgical liquid metal cooling system according to any one of claims 1 to 5, characterized in that, The metallurgical liquid metal cooling system is a ferroalloy or metal silicon cooling system.

12. A metallurgical liquid metal forming system, characterized in that, It includes the metallurgical liquid metal cooling system according to any one of claims 1 to 11.

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