Control method and device for electric-heating molten salt initial melting system

Abstract

A control method and device for an electric-heating molten salt initial melting system (100). The electric-heating molten salt initial melting system (100) comprises a salt storage compartment (3), a salt melting tank (7), a feeder (5), and an electric heater (16), wherein the feeder (5) is used for transporting a first solid salt in the salt storage compartment (3) to the salt melting tank (7). The method comprises: acquiring a first liquid level of a first solid salt in the salt storage compartment (3); acquiring a second liquid level of a liquid salt in the salt melting tank (7); and controlling the feeder (5) on the basis of the first liquid level and / or the second liquid level. Therefore, the feeder (5) can be automatically controlled in consideration of the first liquid level of the first solid salt in the salt storage compartment (3) and / or the second liquid level of the liquid salt in the salt melting tank (7), thereby improving the control flexibility and automation degree of the feeder (5), improving the automation degree of the electric-heating molten salt initial melting system (100), and saving labor and material resources.

Description

Control method and device for electric heating molten salt initial melting system Technical Field

[0001] The present invention relates to the field of energy technology, and in particular to a control method, device, electronic equipment and storage medium for an electrically heated molten salt initial melting system. Background Art

[0002] Molten salt heat storage technology is a promising energy storage technology, offering advantages such as low cost, long lifespan, pollution-free operation, and no geographical restrictions. Salt heating is a key technology within this field, but the electrically heated molten salt initial melting system in this technology suffers from a low degree of automation.

[0003] Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the above-mentioned technology at least to a certain extent.

[0005] To this end, one object of the present invention is to provide a control method for an electrically heated molten salt initial melting system, wherein a first liquid level of a first solid salt in a salt storage bin and a second liquid level of a liquid salt in a salt conversion tank are obtained, and a feeder is controlled based on the first liquid level and / or the second liquid level. Thus, the feeder can be automatically controlled based on the first liquid level of the first solid salt in the salt storage bin and / or the second liquid level of the liquid salt in the salt conversion tank, thereby improving the flexibility and automation of the feeder control, thereby improving the automation level of the electrically heated molten salt initial melting system and saving manpower and material resources.

[0006] The second object of the present invention is to provide a control device for an electrically heated molten salt initial melting system.

[0007] A third object of the present invention is to provide an electronic device.

[0008] A fourth object of the present invention is to provide a computer-readable storage medium.

[0009] An embodiment of the first aspect of the present invention proposes a control method for an electrically heated molten salt initial melting system, which includes a salt storage bin, a salt-forming tank, a feeder and an electric heater. The feeder is used to transport the first solid salt in the salt storage bin to the salt-forming tank. The method includes: obtaining a first liquid level of the first solid salt in the salt storage bin; obtaining a second liquid level of the liquid salt in the salt-forming tank; and controlling the feeder based on the first liquid level and / or the second liquid level.

[0010] According to the control method of the electrically heated molten salt initial melting system according to an embodiment of the present invention, a first liquid level of the first solid salt in the salt storage bin is obtained, a second liquid level of the liquid salt in the salt conversion tank is obtained, and the feeder is controlled based on the first liquid level and / or the second liquid level. Thus, the feeder can be automatically controlled taking into account the first liquid level of the first solid salt in the salt storage bin and / or the second liquid level of the liquid salt in the salt conversion tank, thereby improving the flexibility and automation of the feeder control, thereby improving the automation level of the electrically heated molten salt initial melting system and saving manpower and material resources.

[0011] In addition, the control method of the electric heating molten salt initial melting system proposed in the above embodiment of the present invention may also have the following additional technical features:

[0012] In one embodiment of the present invention, the feeder is controlled based on the first liquid level and / or the second liquid level, including: if the first liquid level is greater than or equal to a first set threshold, and / or the second liquid level is less than a second set threshold, controlling the feeder to start; if the first liquid level is less than the first set threshold, and / or the second liquid level is greater than or equal to the second set threshold, controlling the feeder to shut down.

[0013] In one embodiment of the present invention, the electric heating system further includes a crushing and salt-feeding device, which is used to crush the second solid salt to obtain the first solid salt, and transport the first solid salt to the salt storage warehouse; the method further includes: controlling the crushing and salt-feeding device based on the first liquid level.

[0014] In one embodiment of the present invention, the control of the crushing and salt-feeding equipment based on the first liquid level includes: if the first liquid level is less than a third set threshold, controlling the crushing and salt-feeding equipment to start; if the first liquid level is greater than or equal to the third set threshold, controlling the crushing and salt-feeding equipment to shut down; wherein, the third set threshold is less than or equal to the first set threshold.

[0015] In one embodiment of the present invention, the method further includes: obtaining the molten salt temperature of multiple candidate liquid levels in the salt tank, wherein the candidate liquid level is less than or equal to the second liquid level; and controlling the heating power of the electric heater based on the molten salt temperature of the multiple candidate liquid levels.

[0016] In one embodiment of the present invention, the heating power of the electric heater is controlled based on the molten salt temperatures of the multiple candidate liquid levels, including: obtaining the average value of the molten salt temperatures of the multiple candidate liquid levels; if the average value is less than a fourth set threshold, increasing the heating power of the electric heater; if the average value is greater than or equal to the fourth set threshold, reducing the heating power of the electric heater.

[0017] In one embodiment of the present invention, the electrically heated molten salt initial melting system further includes a molten salt pump and a molten salt storage tank, wherein the molten salt pump is used to transport the molten salt in the molten salt tank to the molten salt storage tank; the method further includes: obtaining the molten salt temperature of multiple candidate liquid levels in the molten salt tank, wherein the candidate liquid level is less than or equal to the second liquid level; and controlling the molten salt pump based on the molten salt temperature of the multiple candidate liquid levels.

[0018] In one embodiment of the present invention, the controlling of the molten salt pump based on the molten salt temperatures of the multiple candidate liquid levels includes: obtaining the average value of the molten salt temperatures of the multiple candidate liquid levels; if the average value is less than a fourth set threshold, controlling the molten salt pump to be turned off; if the average value is greater than or equal to the fourth set threshold, controlling the molten salt pump to start.

[0019] In one embodiment of the present invention, after controlling the molten salt pump to start, the method further includes: if the second liquid level is less than a fifth set threshold, controlling the molten salt pump to shut down.

[0020] The second aspect of the present invention provides a control device for an electrically heated molten salt initial melting system. The electrically heated molten salt initial melting system includes a salt storage bin, a salt-forming tank, a feeder, and an electric heater. The feeder is used to transport the first solid salt in the salt storage bin to the salt-forming tank. The device includes: a first acquisition module for acquiring a first liquid level of the first solid salt in the salt storage bin; a second acquisition module for acquiring a second liquid level of the liquid salt in the salt-forming tank; and a control module for controlling the feeder based on the first liquid level and / or the second liquid level.

[0021] The control device of the electrically heated molten salt initial melting system of an embodiment of the present invention obtains a first liquid level of a first solid salt in a salt storage bin and a second liquid level of a liquid salt in a salt conversion tank, and controls a feeder based on the first liquid level and / or the second liquid level. Thus, the feeder can be automatically controlled based on the first liquid level of the first solid salt in the salt storage bin and / or the second liquid level of the liquid salt in the salt conversion tank, thereby improving the flexibility and automation of the feeder control, thereby improving the automation level of the electrically heated molten salt initial melting system and saving manpower and material resources.

[0022] In addition, the control device of the electric heating molten salt initial melting system proposed in the above embodiment of the present invention may also have the following additional technical features:

[0023] In one embodiment of the present invention, the control module is also used to: if the first liquid level is greater than or equal to a first set threshold, and / or the second liquid level is less than a second set threshold, control the feeder to start; if the first liquid level is less than the first set threshold, and / or the second liquid level is greater than or equal to the second set threshold, control the feeder to shut down.

[0024] In one embodiment of the present invention, the electric heating system further includes a crushing and salt-feeding device, which is used to crush the second solid salt to obtain the first solid salt, and transport the first solid salt to the salt storage warehouse; the control module is also used to control the crushing and salt-feeding device based on the first liquid level.

[0025] In one embodiment of the present invention, the control module is further used to: if the first liquid level is less than a third set threshold, control the crushing and salt-feeding equipment to start; if the first liquid level is greater than or equal to the third set threshold, control the crushing and salt-feeding equipment to shut down; wherein, the third set threshold is less than or equal to the first set threshold.

[0026] In one embodiment of the present invention, the control module is further used to: obtain the molten salt temperature of multiple candidate liquid levels in the salt tank, wherein the candidate liquid level is less than or equal to the second liquid level; and control the heating power of the electric heater based on the molten salt temperature of the multiple candidate liquid levels.

[0027] In one embodiment of the present invention, the control module is also used to: obtain the average value of the molten salt temperature of multiple candidate liquid levels; if the average value is less than a fourth set threshold, increase the heating power of the electric heater; if the average value is greater than or equal to the fourth set threshold, reduce the heating power of the electric heater.

[0028] In one embodiment of the present invention, the electrically heated molten salt initial melting system further includes a molten salt pump and a molten salt storage tank, wherein the molten salt pump is used to transport the molten salt in the molten salt tank to the molten salt storage tank; the control module is further used to: obtain the molten salt temperature of multiple candidate liquid levels in the molten salt tank, wherein the candidate liquid level is less than or equal to the second liquid level; and control the molten salt pump based on the molten salt temperature of the multiple candidate liquid levels.

[0029] In one embodiment of the present invention, the control module is further used to: obtain the average value of the molten salt temperature of multiple candidate liquid levels; if the average value is less than a fourth set threshold, control the molten salt pump to be turned off; if the average value is greater than or equal to the fourth set threshold, control the molten salt pump to start.

[0030] In one embodiment of the present invention, after controlling the molten salt pump to start, the control module is further configured to: if the second liquid level is less than a fifth set threshold, control the molten salt pump to shut down.

[0031] The third aspect of the present invention provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the control method of the electric heating molten salt initial melting system as described in the first aspect of the present invention is implemented.

[0032] The electronic device of an embodiment of the present invention, through a processor executing a computer program stored in a memory, obtains a first liquid level of a first solid salt in a salt storage bin, obtains a second liquid level of a liquid salt in a salt-forming tank, and controls a feeder based on the first liquid level and / or the second liquid level. Thus, the feeder can be automatically controlled based on the first liquid level of the first solid salt in the salt storage bin and / or the second liquid level of the liquid salt in the salt-forming tank, thereby improving the flexibility and automation of the feeder control, thereby improving the automation level of the electric heating molten salt initial melting system, and saving manpower and material resources.

[0033] The fourth embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the control method of the electric heating molten salt initial melting system as described in the first embodiment of the present application is implemented.

[0034] The computer-readable storage medium of an embodiment of the present invention obtains a first liquid level of a first solid salt in a salt storage bin, obtains a second liquid level of a liquid salt in a salt-forming tank, and controls a feeder based on the first liquid level and / or the second liquid level. Thus, the feeder can be automatically controlled based on the first liquid level of the first solid salt in the salt storage bin and / or the second liquid level of the liquid salt in the salt-forming tank, thereby improving the flexibility and automation of feeder control, thereby improving the automation level of the electrically heated molten salt initial melting system and saving manpower and material resources.

[0035] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0037] FIG1 is a schematic structural diagram of an electric heating molten salt initial melting system according to one embodiment of the present invention;

[0038] FIG2 is a flow chart of a control method for an electrically heated molten salt initial melting system according to an embodiment of the present invention;

[0039] 3 is a schematic flow chart of a control method for an electrically heated molten salt initial melting system according to another embodiment of the present invention;

[0040] 4 is a schematic flow chart of a control method for an electrically heated molten salt initial melting system according to another embodiment of the present invention;

[0041] FIG5 is a schematic structural diagram of a control device of an electric heating molten salt initial melting system according to one embodiment of the present invention;

[0042] FIG6 is a schematic structural diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0044] The following describes the control method, device, electronic device and storage medium of the electric heating molten salt initial melting system according to the embodiment of the present invention in conjunction with the accompanying drawings.

[0045] FIG1 is a schematic structural diagram of an electric heating molten salt initial melting system according to an embodiment of the present invention.

[0046] As shown in Figure 1, the electric heating molten salt initial melting system 100 includes a loader 1, a crusher 2, a salt storage bin 3, a salt storage bin level gauge 4, a feeder 5, a feed port 6, a salt tank 7, a salt tank level gauge 8, a molten salt pump 9, a molten salt pump outlet electric door 10, a molten salt pump outlet flow meter 11, a salt tank observation window 12, a temperature acquisition device 13, a power supply device 14, a PLC (Programmable Logic Controller) control device 15, an electric heater 16, a liquid collecting tank 17, and a salt discharge electric door 18.

[0047] Feeder 1 and crusher 2 form a crushing and salt feeding device. Feeder 1 is used to transport the second solid salt to crusher 2, which is used to crush the second solid salt to obtain the first solid salt, which is then transported to the salt storage bin. It should be noted that the particle diameter of the second solid salt is larger than that of the first solid salt.

[0048] The salt storage bin 3 is used to store the first solid salt, and the salt storage bin liquid level meter 4 is used to obtain the first liquid level of the first solid salt in the salt storage bin 3 .

[0049] The feeder 5 is used to transport the first solid salt in the salt storage bin 3 to the salt tank 7. The feeder 5 may include a screw machine. The feed port 6 is located in the upper area of ​​the salt tank 7, and the feed port 6 is connected to the feeder 5.

[0050] The salting tank level meter 8 is used to obtain the second liquid level of the liquid salt in the salting tank 7 .

[0051] Molten salt pump 9 is used to transport the molten salt from the salt tank 7 to a molten salt storage tank (not shown). The molten salt storage tank is used to store the molten salt. Molten salt pump 9 is located in the upper area of ​​the salt tank 7, and the lower impeller of molten salt pump 9 is located in the sump 17. The sump 17 is also called the liquid sump and is located in the lower area of ​​the salt tank 7.

[0052] The molten salt pump outlet electric door 10 is located at the outlet of the molten salt pump 9 and is used to control the opening or closing of the molten salt pump 9.

[0053] The molten salt pump outlet flowmeter 11 is used to obtain the molten salt flow rate at the outlet of the molten salt pump 9 .

[0054] The salting tank observation window 12 is located in the upper area of ​​the salting tank 7 and its material may include high temperature resistant glass.

[0055] The temperature acquisition device 13 is used to obtain the molten salt temperature at multiple candidate liquid levels in the salt tank 7. For example, the temperature acquisition device 13 may include a multi-point thermocouple.

[0056] The power supply device 14 is used to supply power to the electrical equipment in the electric heating molten salt initial melting system 100 , wherein the electrical equipment includes the loader 1 , the crusher 2 , the feeder 5 , the molten salt pump 9 , and the electric heater 16 .

[0057] The PLC control device 15 is used to control the salt storage bin level gauge 4, the salt tank level gauge 8, the molten salt pump outlet electric door 10, the temperature acquisition device 13, and the salt discharge electric door 18.

[0058] The electric heater 16 is used to heat the first solid salt in the salt-forming tank 7 to obtain liquid salt, such as molten salt. The electric heater 16 is located in the lower area of ​​the salt-forming tank 7. There is at least one electric heater 16. The electric heater 16 may include an immersion molten salt electric heater.

[0059] The salt discharge electric door 18 is used to control whether to discharge the molten salt in the sump 17 and is located in the lower area of ​​the sump 17.

[0060] In some examples, the salt storage tank level gauge 4 and the salt tank level gauge 8 may include radar level gauges.

[0061] It should be noted that the electrically heated molten salt initial melting system shown in FIG1 is only an example of the electrically heated molten salt initial melting system according to an embodiment of the present invention, and is not a limitation of the electrically heated molten salt initial melting system according to an embodiment of the present invention.

[0062] Figure 2 is a schematic flow diagram of a control method for an electrically heated molten salt initial melting system according to one embodiment of the present invention. The electrically heated molten salt initial melting system includes a salt storage bin, a salt melting tank, a feeder, and an electric heater. The feeder is used to transport the first solid salt in the salt storage bin to the salt melting tank.

[0063] As shown in FIG2 , the control method of the electric heating molten salt initial melting system according to an embodiment of the present invention includes:

[0064] S201, obtaining a first liquid level of a first solid salt in a salt storage bin.

[0065] It should be noted that the first liquid level refers to the actual liquid level of the first solid salt in the salt storage bin.

[0066] For example, continuing with FIG. 1 as an example, the first liquid level of the first solid salt in the salt storage bin 3 can be obtained by the salt storage bin level meter 4 .

[0067] In one embodiment, obtaining the first liquid level of the first solid salt in the salt storage bin may include obtaining the first liquid level according to a set period. It should be noted that the set period is not particularly limited and may include, for example, 2 seconds, 5 seconds, etc. The first liquid level may be updated according to the set period.

[0068] S202, obtaining a second liquid level of the liquid salt in the salt tank.

[0069] It should be noted that the second liquid level refers to the actual liquid level of the liquid salt in the salt tank.

[0070] For example, continuing with FIG. 1 as an example, the second liquid level of the liquid salt in the salt tank 7 can be obtained by the salt tank level meter 8 .

[0071] In one embodiment, obtaining the second liquid level of the liquid salt in the salting tank may include obtaining the second liquid level according to a set period. It should be noted that the set period is not particularly limited and may include, for example, 2 seconds, 5 seconds, etc. The second liquid level may be updated according to the set period.

[0072] S203: Control the feeder based on the first liquid level and / or the second liquid level.

[0073] In the embodiments of the present disclosure, the feeder is controlled based on the first liquid level and / or the second liquid level, including the following possible implementations:

[0074] Method 1: If the first liquid level is greater than or equal to the first set threshold, and / or the second liquid level is less than the second set threshold, the feeder is controlled to start; if the first liquid level is less than the first set threshold, and / or the second liquid level is greater than or equal to the second set threshold, the feeder is controlled to shut down.

[0075] It should be noted that there are no excessive restrictions on the first set threshold and the second set threshold, and they can be set in advance according to actual conditions. For example, the first set threshold can be determined based on the volume of the salt storage bin and the cross-sectional area of ​​the salt storage bin.

[0076] It can be understood that if the first liquid level is greater than or equal to the first set threshold, and / or the second liquid level is less than the second set threshold, it indicates that there is more first solid salt in the salt storage bin, and / or less liquid salt in the salt treatment tank. The feeder can be controlled to start to transport the first solid salt in the salt storage bin to the salt treatment tank for salt treatment.

[0077] If the first liquid level is less than the first set threshold, and / or the second liquid level is greater than or equal to the second set threshold, it indicates that there is less first solid salt in the salt storage bin, and / or more liquid salt in the salt treatment tank. The feeder can be controlled to shut down to stop transporting the first solid salt in the salt storage bin to the salt treatment tank for salt treatment.

[0078] Therefore, in this method, when the first liquid level is large and / or the second liquid level is small, the feeder can be controlled to start so as to transport the first solid salt in the salt storage bin to the salt-making tank for salt-making, and when the first liquid level is small and / or the second liquid level is large, the feeder can be controlled to shut down so as to stop transporting the first solid salt in the salt storage bin to the salt-making tank for salt-making.

[0079] Method 2: Based on the first liquid level and the second liquid level, the operating parameters of the feeder are controlled.

[0080] It should be noted that there are not too many restrictions on operating parameters, for example, they may include power, current, etc.

[0081] In one embodiment, controlling the operating parameters of the feeder based on the first and second liquid levels includes obtaining a mapping relationship between the first and second candidate liquid levels and the candidate operating parameters, obtaining a target operating parameter for the feeder based on the first and second liquid levels and the mapping relationship, and controlling the feeder operating parameter to adjust to the target operating parameter. For example, the candidate operating parameter mapped from the first and second liquid levels can be used as the target operating parameter.

[0082] In one embodiment, the operating parameters of the feeder are controlled based on the first liquid level and the second liquid level, including if the first liquid level is greater than or equal to a first set threshold, and / or the second liquid level is less than a second set threshold, indicating that there is more first solid salt in the salt storage bin, and / or less liquid salt in the salt conversion tank, the power of the feeder is increased to speed up the transportation of the first solid salt in the salt storage bin to the salt conversion tank.

[0083] In one embodiment, the operating parameters of the feeder are controlled based on the first liquid level and the second liquid level, including reducing the power of the feeder to slow down the transportation of the first solid salt in the salt storage bin to the salt transformation tank if the first liquid level is less than a first set threshold value, and / or the second liquid level is greater than or equal to a second set threshold value, indicating that there is less first solid salt in the salt storage bin, and / or more liquid salt in the salt transformation tank.

[0084] In summary, according to the control method of the electrically heated molten salt initial melting system according to an embodiment of the present invention, the first liquid level of the first solid salt in the salt storage bin is obtained, the second liquid level of the liquid salt in the salt conversion tank is obtained, and the feeder is controlled based on the first liquid level and / or the second liquid level. As a result, the feeder can be automatically controlled taking into account the first liquid level of the first solid salt in the salt storage bin and / or the second liquid level of the liquid salt in the salt conversion tank, thereby improving the flexibility and automation of the feeder control, thereby improving the automation level of the electrically heated molten salt initial melting system and saving manpower and material resources.

[0085] Based on any of the above embodiments, the electric heating system further includes a crushing and salt feeding device, which is used to crush the second solid salt to obtain the first solid salt, and transport the first solid salt to a salt storage warehouse.

[0086] The method also includes controlling the crushing and salt feeding equipment based on the first liquid level. Thus, the crushing and salt feeding equipment can be automatically controlled based on the first liquid level of the first solid salt in the salt storage bin, thereby improving the flexibility and automation of the crushing and salt feeding equipment control, thereby improving the automation level of the electric heating molten salt initial melting system and saving manpower and material resources.

[0087] In the embodiments of the present disclosure, the crushing and salt feeding equipment is controlled based on the first liquid level, including the following possible implementations:

[0088] Mode 1: If the first liquid level is less than the third set threshold, the crushing and salt feeding equipment is controlled to start; if the first liquid level is greater than or equal to the third set threshold, the crushing and salt feeding equipment is controlled to shut down.

[0089] It should be noted that the third set threshold is less than or equal to the first set threshold, and there is no excessive limitation on the third set threshold.

[0090] It can be understood that if the first liquid level is less than the third set threshold value, it indicates that there is less first solid salt in the salt storage bin, and the crushing and salt feeding equipment is controlled to start to increase the first solid salt in the salt storage bin. If the first liquid level is greater than or equal to the third set threshold value, it indicates that there is more first solid salt in the salt storage bin, and the crushing and salt feeding equipment is controlled to shut down to stop increasing the first solid salt in the salt storage bin.

[0091] Therefore, in this method, when the first liquid level is small, the crushing salt feeding equipment can be controlled to start to increase the first solid salt in the salt storage bin; when the first liquid level is large, the crushing salt feeding equipment can be controlled to shut down to stop increasing the first solid salt in the salt storage bin.

[0092] Method 2: Based on the first liquid level, the operating parameters of the crushing and salt feeding equipment are controlled.

[0093] It should be noted that there are not too many restrictions on operating parameters, for example, they may include power, current, etc.

[0094] In one embodiment, controlling operating parameters of a crushing and salt-feeding device based on a first liquid level includes obtaining a mapping relationship between a first candidate liquid level and candidate operating parameters, obtaining target operating parameters of the crushing and salt-feeding device based on the first liquid level and the mapping relationship, and controlling the operating parameters of the crushing and salt-feeding device to adjust to the target operating parameters. For example, the candidate operating parameters mapped to the first liquid level can be used as the target operating parameters.

[0095] In one embodiment, the operating parameters of the crushing and salt-feeding equipment are controlled based on the first liquid level, including increasing the power of the crushing and salt-feeding equipment to speed up the crushing of the second solid salt and speeding up the transportation of the first solid salt to the salt storage bin if the first liquid level is less than a third set threshold, indicating that there is less first solid salt in the salt storage bin.

[0096] In one embodiment, the operating parameters of the crushing and salt-feeding equipment are controlled based on the first liquid level, including reducing the power of the crushing and salt-feeding equipment to slow down the crushing of the second solid salt and slow down the transportation of the first solid salt to the salt storage bin if the first liquid level is greater than or equal to a third set threshold, indicating that there is a large amount of first solid salt in the salt storage bin.

[0097] Based on any of the above embodiments, as shown in FIG3 , the control method of the electric heating molten salt initial melting system according to the embodiment of the present invention further includes:

[0098] S301, obtaining molten salt temperatures at multiple candidate liquid levels in a salt-forming tank, wherein the candidate liquid level is less than or equal to a second liquid level.

[0099] It should be noted that the candidate liquid level refers to the set level of the liquid salt in the salt tank, not the actual level. There are multiple candidate liquid levels. The candidate liquid level is less than or equal to the second liquid level. There are no specific restrictions on the candidate liquid levels. For example, if the second liquid level is 3 meters, the candidate liquid levels may include 0.5 meters, 1 meter, 1.5 meters, 2 meters, 2.5 meters, and 3 meters.

[0100] It is understandable that the molten salt temperatures at different candidate liquid levels may be the same or different.

[0101] For example, continuing with FIG. 1 as an example, the molten salt temperatures of multiple candidate liquid levels in the salt tank 7 can be acquired through the temperature acquisition device 13 .

[0102] S302: Control the heating power of the electric heater based on the molten salt temperatures at the multiple candidate liquid levels.

[0103] Therefore, this method can comprehensively consider the molten salt temperature of multiple candidate liquid levels in the salt tank, control the heating power of the electric heater, improve the flexibility and automation of the electric heater control, and thus improve the automation level of the electric heating molten salt initial melting system, saving manpower and material resources.

[0104] In the embodiments of the present disclosure, the heating power of the electric heater is controlled based on the molten salt temperature at multiple candidate liquid levels, including the following possible implementations:

[0105] Method 1: Obtain the average value of the molten salt temperature of multiple candidate liquid levels. If the average value is less than a fourth set threshold, increase the heating power of the electric heater. If the average value is greater than or equal to the fourth set threshold, reduce the heating power of the electric heater.

[0106] It should be noted that there are no excessive restrictions on the fourth set threshold.

[0107] It can be understood that if the average value is less than the fourth set threshold value, it indicates that the average value of the molten salt temperatures of multiple candidate liquid levels is small, and the heating power of the electric heater is increased to speed up the heating of the molten salt in the salt tank to speed up the increase in the molten salt temperature. If the average value is greater than or equal to the fourth set threshold value, it indicates that the average value of the molten salt temperatures of multiple candidate liquid levels is large, and the heating power of the electric heater is reduced to slow down the heating of the molten salt in the salt tank to slow down the increase in the molten salt temperature.

[0108] Therefore, in this method, when the average value of the molten salt temperatures of multiple candidate liquid levels is small, the heating power of the electric heater is increased to speed up the heating of the molten salt in the salt tank to speed up the increase in the molten salt temperature; when the average value of the molten salt temperatures of multiple candidate liquid levels is large, the heating power of the electric heater is reduced to slow down the heating of the molten salt in the salt tank to slow down the increase in the molten salt temperature.

[0109] Method 2: if the molten salt temperature of at least one candidate liquid level is lower than the fourth set threshold, the heating power of the electric heater is increased; if the molten salt temperature of each candidate liquid level is greater than or equal to the fourth set threshold, the heating power of the electric heater is reduced.

[0110] It can be understood that if there is at least one candidate liquid level whose molten salt temperature is lower than the fourth set threshold, it indicates that there is at least one candidate liquid level whose molten salt temperature is relatively low, and the heating power of the electric heater is increased to speed up the heating of the molten salt in the salt tank to speed up the increase in the molten salt temperature. If the molten salt temperature of each candidate liquid level is greater than or equal to the fourth set threshold, it indicates that the molten salt temperature of each candidate liquid level is relatively high, and the heating power of the electric heater is reduced to slow down the heating of the molten salt in the salt tank to slow down the increase in the molten salt temperature.

[0111] Therefore, in this method, when there is at least one candidate liquid level with a low molten salt temperature, the heating power of the electric heater is increased to speed up the heating of the molten salt in the salt tank to speed up the increase in the molten salt temperature; when the molten salt temperature of each candidate liquid level is high, the heating power of the electric heater is reduced to slow down the heating of the molten salt in the salt tank to slow down the increase in the molten salt temperature.

[0112] Method 3: if the molten salt temperature of the candidate liquid level is less than the fourth set threshold, increase the heating power of the electric heater corresponding to the candidate liquid level; if the molten salt temperature of the candidate liquid level is greater than or equal to the fourth set threshold, reduce the heating power of the electric heater corresponding to the candidate liquid level.

[0113] It should be noted that there are multiple electric heaters, and there is a corresponding relationship between the candidate liquid level and the electric heater. One candidate liquid level may correspond to at least one electric heater. The electric heater is used to heat the molten salt at the candidate liquid level corresponding to the electric heater.

[0114] It can be understood that if the molten salt temperature of the candidate liquid level is less than the fourth set threshold value, it indicates that the molten salt temperature of the candidate liquid level is relatively low, and the heating power of the electric heater corresponding to the candidate liquid level is increased to speed up the heating of the molten salt of the candidate liquid level to speed up the increase in the molten salt temperature of the candidate liquid level. If the molten salt temperature of the candidate liquid level is greater than or equal to the fourth set threshold value, it indicates that the molten salt temperature of the candidate liquid level is relatively high, and the heating power of the electric heater is reduced to slow down the heating of the molten salt of the candidate liquid level to slow down the increase in the molten salt temperature of the candidate liquid level.

[0115] Therefore, in this method, when the molten salt temperature of the candidate liquid level is relatively low, the heating power of the electric heater corresponding to the candidate liquid level is increased to speed up the heating of the molten salt at the candidate liquid level and to speed up the increase in the molten salt temperature of the candidate liquid level. When the molten salt temperature of the candidate liquid level is relatively high, the heating power of the electric heater corresponding to the candidate liquid level is reduced to slow down the heating of the molten salt at the candidate liquid level and to slow down the increase in the molten salt temperature of the candidate liquid level.

[0116] Based on any of the above embodiments, the electrically heated molten salt initial melting system further includes a molten salt pump and a molten salt storage tank, and the molten salt pump is used to transport the molten salt in the salt tank to the molten salt storage tank.

[0117] As shown in FIG4 , the control method of the electric heating molten salt initial melting system according to the embodiment of the present invention further includes:

[0118] S401, obtaining molten salt temperatures at multiple candidate liquid levels in a salt-forming tank, wherein the candidate liquid level is less than or equal to a second liquid level.

[0119] For the relevant content of step S401, please refer to the above embodiment and will not be repeated here.

[0120] S402: Control the molten salt pump based on the molten salt temperatures at the multiple candidate liquid levels.

[0121] Therefore, this method can comprehensively consider the molten salt temperatures of multiple candidate liquid levels in the salt tank and control the molten salt pump, thereby improving the flexibility and automation of the molten salt pump control, thereby improving the automation level of the electric heating molten salt initial melting system and saving manpower and material resources.

[0122] In the embodiments of the present disclosure, the molten salt pump is controlled based on the molten salt temperature at multiple candidate liquid levels, including the following possible implementations:

[0123] Method 1: obtain the average value of the molten salt temperature of multiple candidate liquid levels, if the average value is less than a fourth set threshold, control the molten salt pump to be turned off, if the average value is greater than or equal to the fourth set threshold, control the molten salt pump to be started.

[0124] It can be understood that if the average value is less than the fourth set threshold value, it indicates that the average value of the molten salt temperatures of multiple candidate liquid levels is small, and the molten salt pump is controlled to be turned off to stop transporting the molten salt in the molten salt tank to the molten salt storage tank. If the average value is greater than or equal to the fourth set threshold value, it indicates that the average value of the molten salt temperatures of multiple candidate liquid levels is large, and the molten salt pump is controlled to start to transport the molten salt in the molten salt tank to the molten salt storage tank.

[0125] Therefore, in this method, when the average value of the molten salt temperature of multiple candidate liquid levels is small, the molten salt pump is controlled to be closed to speed up the heating of the molten salt in the molten salt tank and stop transporting the molten salt in the molten salt tank to the molten salt storage tank. When the average value of the molten salt temperature of multiple candidate liquid levels is large, the molten salt pump is controlled to start to transport the molten salt in the molten salt tank to the molten salt storage tank.

[0126] In one embodiment, after controlling the molten salt pump to start, the method further includes controlling the molten salt pump to shut down if the second liquid level is less than a fifth set threshold. Thus, in this method, when the second liquid level of the liquid salt in the molten salt tank is low, the molten salt pump can be controlled to shut down to stop transporting the molten salt in the molten salt tank to the molten salt storage tank, thereby avoiding the problem of the molten salt pump not being able to operate normally due to the second liquid level of the liquid salt in the molten salt tank being too low.

[0127] It should be noted that there are no excessive restrictions on the fifth set threshold.

[0128] Mode 2: If the molten salt temperature of at least one candidate liquid level is lower than the fourth set threshold, the molten salt pump is controlled to be turned off; if the molten salt temperature of each candidate liquid level is greater than or equal to the fourth set threshold, the molten salt pump is controlled to be started.

[0129] It can be understood that if there is at least one candidate liquid level whose molten salt temperature is lower than the fourth set threshold, it indicates that there is at least one candidate liquid level whose molten salt temperature is lower, and the molten salt pump is controlled to be turned off to stop transporting the molten salt in the molten salt tank to the molten salt storage tank. If the molten salt temperature of each candidate liquid level is greater than or equal to the fourth set threshold, it indicates that the molten salt temperature of each candidate liquid level is higher, and the molten salt pump is controlled to start to transport the molten salt in the molten salt tank to the molten salt storage tank.

[0130] Therefore, in this method, when there is at least one candidate liquid level with a low molten salt temperature, the molten salt pump is controlled to be turned off to stop transporting the molten salt in the molten salt tank to the molten salt storage tank; when the molten salt temperature at each candidate liquid level is high, the molten salt pump is controlled to be started to transport the molten salt in the molten salt tank to the molten salt storage tank.

[0131] Method 3: Based on the molten salt temperatures at multiple candidate liquid levels, the operating parameters of the molten salt pump are controlled.

[0132] It should be noted that there are not too many restrictions on operating parameters, for example, they may include power, current, etc.

[0133] In one embodiment, the operating parameters of the molten salt pump are controlled based on the molten salt temperatures of multiple candidate liquid levels, including obtaining the average value of the molten salt temperatures of multiple candidate liquid levels. If the average value is less than a fourth set threshold, it indicates that the average value of the molten salt temperatures of the multiple candidate liquid levels is small, and the power of the molten salt pump is reduced to slow down the transportation of the molten salt in the molten salt tank to the molten salt storage tank.

[0134] In one embodiment, the operating parameters of the molten salt pump are controlled based on the molten salt temperatures of multiple candidate liquid levels, including obtaining the average value of the molten salt temperatures of multiple candidate liquid levels. If the average value is greater than or equal to a fourth set threshold, it indicates that the average value of the molten salt temperatures of the multiple candidate liquid levels is large, and the power of the molten salt pump is increased to speed up the transportation of the molten salt in the molten salt tank to the molten salt storage tank.

[0135] In order to implement the above embodiment, the present invention also proposes a control device for an electrically heated molten salt initial melting system.

[0136] Figure 5 is a schematic diagram of the control device of an electrically heated molten salt initial melting system according to one embodiment of the present invention. The electrically heated molten salt initial melting system includes a salt storage bin, a salt melting tank, a feeder, and an electric heater. The feeder is used to transport the first solid salt in the salt storage bin to the salt melting tank.

[0137] As shown in FIG5 , the control device 500 of the electric heating molten salt initial melting system according to the embodiment of the present invention includes: a first acquisition module 510 , a second acquisition module 520 and a control module 530 .

[0138] A first acquisition module 510 is configured to acquire a first liquid level of a first solid salt in the salt storage bin;

[0139] A second acquisition module 520 is used to obtain a second liquid level of the liquid salt in the salt tank;

[0140] The control module 530 is configured to control the feeder based on the first liquid level and / or the second liquid level.

[0141] In one embodiment of the present invention, the control module 530 is further used to: if the first liquid level is greater than or equal to a first set threshold, and / or the second liquid level is less than a second set threshold, control the feeder to start; if the first liquid level is less than the first set threshold, and / or the second liquid level is greater than or equal to the second set threshold, control the feeder to shut down.

[0142] In one embodiment of the present invention, the electric heating system further includes a crushing and salt-feeding device, which is used to crush the second solid salt to obtain the first solid salt and transport the first solid salt to the salt storage warehouse; the control module 530 is also used to: control the crushing and salt-feeding device based on the first liquid level.

[0143] In one embodiment of the present invention, the control module 530 is further used to: if the first liquid level is less than a third set threshold, control the crushing and salt-feeding equipment to start; if the first liquid level is greater than or equal to the third set threshold, control the crushing and salt-feeding equipment to shut down; wherein, the third set threshold is less than or equal to the first set threshold.

[0144] In one embodiment of the present invention, the control module 530 is further used to: obtain the molten salt temperature of multiple candidate liquid levels in the salt tank, wherein the candidate liquid level is less than or equal to the second liquid level; and control the heating power of the electric heater based on the molten salt temperature of the multiple candidate liquid levels.

[0145] In one embodiment of the present invention, the control module 530 is further used to: obtain the average value of the molten salt temperature of multiple candidate liquid levels; if the average value is less than a fourth set threshold, increase the heating power of the electric heater; if the average value is greater than or equal to the fourth set threshold, reduce the heating power of the electric heater.

[0146] In one embodiment of the present invention, the electrically heated molten salt initial melting system further includes a molten salt pump and a molten salt storage tank, wherein the molten salt pump is used to transport the molten salt in the molten salt tank to the molten salt storage tank; the control module 530 is further used to: obtain the molten salt temperature of multiple candidate liquid levels in the molten salt tank, wherein the candidate liquid level is less than or equal to the second liquid level; and control the molten salt pump based on the molten salt temperature of the multiple candidate liquid levels.

[0147] In one embodiment of the present invention, the control module 530 is further used to: obtain the average value of the molten salt temperature of multiple candidate liquid levels; if the average value is less than a fourth set threshold, control the molten salt pump to be turned off; if the average value is greater than or equal to the fourth set threshold, control the molten salt pump to start.

[0148] In one embodiment of the present invention, after controlling the molten salt pump to start, the control module 530 is further configured to: if the second liquid level is less than a fifth set threshold, control the molten salt pump to shut down.

[0149] It should be noted that for details not disclosed in the control device of the electric heating molten salt initial melting system in the embodiment of the present invention, please refer to the details disclosed in the control method of the electric heating molten salt initial melting system in the embodiment of the present invention, and no further details will be given here.

[0150] In summary, the control device of the electrically heated molten salt initial melting system of the embodiment of the present invention obtains the first liquid level of the first solid salt in the salt storage bin, obtains the second liquid level of the liquid salt in the salt conversion tank, and controls the feeder based on the first liquid level and / or the second liquid level. As a result, the feeder can be automatically controlled taking into account the first liquid level of the first solid salt in the salt storage bin and / or the second liquid level of the liquid salt in the salt conversion tank, thereby improving the flexibility and automation of the feeder control, thereby improving the automation level of the electrically heated molten salt initial melting system and saving manpower and material resources.

[0151] In order to implement the above embodiment, as shown in Figure 6, an embodiment of the present invention proposes an electronic device 600, including: a memory 610, a processor 620, and a computer program stored in the memory 610 and executable on the processor 620. When the processor 620 executes the program, the control method of the above-mentioned electric heating molten salt initial melting system is implemented.

[0152] The electronic device of an embodiment of the present invention, through a processor executing a computer program stored in a memory, obtains a first liquid level of a first solid salt in a salt storage bin, obtains a second liquid level of a liquid salt in a salt-forming tank, and controls a feeder based on the first liquid level and / or the second liquid level. Thus, the feeder can be automatically controlled based on the first liquid level of the first solid salt in the salt storage bin and / or the second liquid level of the liquid salt in the salt-forming tank, thereby improving the flexibility and automation of the feeder control, thereby improving the automation level of the electric heating molten salt initial melting system, and saving manpower and material resources.

[0153] In order to implement the above embodiment, the embodiment of the present invention proposes a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the control method of the above-mentioned electric heating molten salt initial melting system is implemented.

[0154] The computer-readable storage medium of an embodiment of the present invention stores a computer program and is executed by a processor to obtain a first liquid level of a first solid salt in a salt storage bin, obtain a second liquid level of a liquid salt in a salt-forming tank, and control a feeder based on the first liquid level and / or the second liquid level. Thus, the feeder can be automatically controlled based on the first liquid level of the first solid salt in the salt storage bin and / or the second liquid level of the liquid salt in the salt-forming tank, thereby improving the flexibility and automation of the feeder control, thereby improving the automation level of the electric heating molten salt initial melting system and saving manpower and material resources.

[0155] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0156] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0157] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0158] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0159] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0160] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A control method for an electrically heated molten salt initial melting system, characterized in that: The electric heating molten salt initial melting system comprises a salt storage bin, a salt melting tank, a feeder and an electric heater, wherein the feeder is used to transport the first solid salt in the salt storage bin to the salt melting tank, and the method comprises: Obtaining a first liquid level of a first solid salt in the salt storage bin; Obtaining a second liquid level of the liquid salt in the salt-forming tank; The feeder is controlled based on the first liquid level and / or the second liquid level.

2. The method according to claim 1, characterized in that The controlling the feeder based on the first liquid level and / or the second liquid level comprises: If the first liquid level is greater than or equal to a first set threshold, and / or the second liquid level is less than a second set threshold, controlling the feeder to start; If the first liquid level is less than the first set threshold, and / or the second liquid level is greater than or equal to the second set threshold, the feeder is controlled to be closed.

3. The method according to claim 2, characterized in that The electric heating system further comprises a crushing and salt feeding device, which is used to crush the second solid salt to obtain the first solid salt, and transport the first solid salt to the salt storage bin; The method further comprises: Based on the first liquid level, the crushing and salt-feeding equipment is controlled.

4. The method according to claim 3, characterized in that The controlling the crushing and salt feeding equipment based on the first liquid level includes: If the first liquid level is less than a third set threshold, the crushing and salt-feeding equipment is controlled to start; If the first liquid level is greater than or equal to the third set threshold, the crushing and salt feeding equipment is controlled to be closed; wherein, The third set threshold is less than or equal to the first set threshold.

5. The method according to claim 1, characterized in that The method further comprises: Acquire the molten salt temperature of a plurality of candidate liquid levels in the salt-forming tank, wherein the candidate liquid level is less than or equal to the second liquid level; Based on the molten salt temperatures of the plurality of candidate liquid levels, the heating power of the electric heater is controlled.

6. The method according to claim 5, characterized in that The controlling the heating power of the electric heater based on the molten salt temperatures of the plurality of candidate liquid levels comprises: Obtaining an average value of the molten salt temperatures of the plurality of candidate liquid levels; If the average value is less than a fourth set threshold, increasing the heating power of the electric heater; If the average value is greater than or equal to the fourth set threshold, the heating power of the electric heater is reduced.

7. The method according to claim 1, characterized in that The electrically heated molten salt initial melting system further comprises a molten salt pump and a molten salt storage tank, wherein the molten salt pump is used to transport the molten salt in the salt melting tank to the molten salt storage tank; The method further comprises: Acquire the molten salt temperature of a plurality of candidate liquid levels in the salt-forming tank, wherein the candidate liquid level is less than or equal to the second liquid level; The molten salt pump is controlled based on the molten salt temperatures of the plurality of candidate liquid levels.

8. The method according to claim 7, characterized in that The controlling the molten salt pump based on the molten salt temperatures of the plurality of candidate liquid levels comprises: Obtaining an average value of the molten salt temperatures of the plurality of candidate liquid levels; If the average value is less than a fourth set threshold, controlling the molten salt pump to be turned off; If the average value is greater than or equal to the fourth set threshold, the molten salt pump is controlled to start.

9. The method according to claim 8, characterized in that After the controlling the molten salt pump to start, the method further includes: If the second liquid level is less than a fifth set threshold, the molten salt pump is controlled to be turned off.

10. A control device for an electric heating molten salt initial melting system, characterized in that: The electric heating molten salt initial melting system comprises a salt storage bin, a salt melting tank, a feeder and an electric heater, wherein the feeder is used to transport the first solid salt in the salt storage bin to the salt melting tank, and the device comprises: A first acquisition module, used for acquiring a first liquid level of a first solid salt in the salt storage bin; A second acquisition module, used for acquiring a second liquid level of the liquid salt in the salt tank; A control module is used to control the feeder based on the first liquid level and / or the second liquid level.

11. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, a control method for an electrically heated molten salt initial melting system as described in any one of claims 1 to 9 is implemented.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, a control method for an electrically heated molten salt initial melting system as described in any one of claims 1 to 9 is implemented.

Images