A material addition control method, control device, and control system

Abstract

The application provides a material adding control method, a control device and a control system, relates to the technical field of thermoelectricity, and solves the problem that there is no accurate control method for the adding amount of coal slime at present, so that the safety of the operation of a boiler unit is difficult to guarantee. The method comprises the following steps: acquiring load information of a boiler; determining a first coal slime adding amount according to the load information and a first preset function; and controlling the adding amount of coal slime based on the first coal slime adding amount.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermoelectricity, and in particular to a material adding control method, a control device and a control system. BACKGROUND

[0002] Coal slime is difficult to be treated and utilized due to high water content, fine particle size and strong cohesiveness. Most of the coal slime is discarded as waste, which not only causes energy waste but also pollutes the environment.

[0003] The circulating fluidized bed boiler can be used as an effective way for clean and efficient utilization of coal slime due to its wide fuel adaptability and low pollutant emission. However, there is no accurate control method for the coal slime adding amount at present, so it is difficult to ensure the safety of the boiler unit operation. SUMMARY

[0004] The present application provides a material adding control method, a control device and a control system, which can be used to solve the problem that there is no accurate control method for the coal slime adding amount in the prior art, so it is difficult to ensure the safety of the boiler unit operation.

[0005] In a first aspect, an embodiment of the present application provides a material adding control method, which comprises:

[0006] obtaining load information of a boiler;

[0007] determining a first coal slime adding amount according to the load information and a first preset function;

[0008] controlling the adding amount of the coal slime based on the first coal slime adding amount.

[0009] In a second aspect, an embodiment of the present application provides a material adding control device, which comprises:

[0010] an obtaining module configured to obtain load information of a boiler;

[0011] a determining module configured to determine a first coal slime adding amount according to the load information and a first preset function;

[0012] a control module configured to control the adding amount of the coal slime based on the first coal slime adding amount.

[0013] In a third aspect, an embodiment of the present application provides a material adding control system, which comprises a boiler, a coal slime conveying device and a material adding control device as described in the second aspect of the present application.

[0014] The boiler and the coal slime conveying device are connected with the material adding control device.

[0015] In a fourth aspect, an electronic device is provided, which includes a processor, a memory, and a program or instructions stored in the memory and running on the processor, and the program or instructions, when executed by the processor, implement the steps of the method according to the first aspect.

[0016] In a fifth aspect, a readable storage medium is provided, which stores a program or instructions, and the program or instructions, when executed by a processor, implement the steps of the method according to the first aspect.

[0017] In a sixth aspect, a chip is provided, which includes a processor and a communication interface, the communication interface being coupled to the processor, and the processor being configured to run a program or instructions to implement the method according to the first aspect.

[0018] The present application brings the following beneficial effects:

[0019] In the embodiments of the present application, the load information of the boiler is acquired, the first coal slime addition amount is determined according to the load information and a first preset function, and the addition amount of coal slime is controlled based on the first coal slime addition amount. Since the scheme provided in the embodiments of the present application can determine the first coal slime addition amount based on the actual working condition of the boiler, and further control the actual addition amount of coal slime based on the first coal slime addition amount, the addition of coal slime can be accurately controlled according to the actual working condition of the boiler, so that the addition amount of coal slime can be matched with the actual working condition of the boiler, and the coking in the furnace can be avoided, thereby ensuring the safe operation of the boiler unit. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor. In the drawings:

[0021] Figure 1 A flowchart of a material addition control method provided by the embodiments of the present application is shown in the figure;

[0022] Figure 2 A control logic diagram corresponding to the material addition control method provided by the embodiments of the present application is shown in the figure;

[0023] Figure 3 A structure diagram of a material addition control device provided by the embodiments of the present application is shown in the figure;

[0024] Figure 4 A structure diagram of a material addition control system provided by the embodiments of the present application is shown in the figure;

[0025] Reference signs:

[0026] 30 - material adding control system; 301 - boiler; 302 - coal slime conveying device. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0028] As described in the background, since the circulating fluidized bed boiler has the advantages of wide fuel adaptability and low pollutant emission, it can be used as an effective way for clean and efficient utilization of coal slime. Conveying coal slime into the furnace and blending with coal can replace part of the coal combustion, which can realize the recycling of coal slime and reduce energy waste and environmental pollution. However, there is currently no accurate control method for the amount of coal slime added, so the amount of coal slime added cannot match the actual working condition of the boiler unit, which can easily cause coking in the furnace and thus difficult to ensure the safety of the boiler unit operation.

[0029] To this end, the embodiments of the present application provide a material adding control method, which can be used to solve the technical problem that there is currently no accurate control method for the amount of coal slime added, so it is difficult to ensure the safety of the boiler unit operation. The material adding control method provided by the embodiments of the present application will be described in detail below with reference to the drawings and specific embodiments.

[0030] As shown in Figure 1 The embodiments of the present application provide a material adding control method, which can be executed by an electronic device, in other words, the method can be executed by software or hardware installed on the electronic device. The method can include the following steps:

[0031] Step 101, obtaining load information of a boiler.

[0032] The material can refer to coal slime. The boiler can be a boiler unit; the load information can be a unit load instruction of the boiler unit.

[0033] Step 102, determining a first coal slime adding amount according to the load information and a first preset function.

[0034] The first coal slime adding amount can be determined according to the load information of the boiler and a first preset function. The load information can be input into the first preset function to calculate the first coal slime adding amount. The first coal slime adding amount can also be referred to as a basic coal slime adding amount. The actual coal slime adding amount to be added to the boiler (corresponding to the target coal slime adding amount in the following description) can be further determined on the basis of the basic coal slime adding amount.

[0035] The first preset function can be a broken line function that is drawn in advance according to different boiler loads and corresponding appropriate coal slime amounts (as a percentage of the maximum coal slime adding amount). The broken line function can be drawn according to the data in Table 1, where the abscissa X is different boiler loads, and the ordinate Y is the corresponding appropriate coal slime amount:

[0036] Table 1

[0037] X Y 40% P0 25％ 45% P0 30％ 50% P0 35％ 55% P0 40％ 60% P0 45％ 65% P0 50％ 70% P0 55％ 75% P0 60％ 80% P0 60％ 85% P0 60％ 90% P0 60％ 95% P0 60％ 100% P0 60％

[0038] Wherein, P0 is the rated load of the unit.

[0039] In step 103, the adding amount of coal slime is controlled based on the first coal slime adding amount.

[0040] The actual coal slime adding amount to the boiler can be guided based on the first coal slime adding amount.

[0041] In the embodiments of the present application, step 103 controls the adding amount of coal slime based on the first coal slime adding amount. The actual coal slime adding amount can be directly controlled according to the first coal slime adding amount, for example, the actual coal slime adding amount is directly adjusted to the first coal slime adding amount. In actual application, there can be many factors that affect the adding amount of coal slime. Therefore, step 103 controls the adding amount of coal slime based on the first coal slime adding amount, and the actual coal slime adding amount can also be controlled in combination with other influencing factors on the basis of the first coal slime adding amount.

[0042] It can be understood that by using the material adding control method provided in the embodiments of the present application, the load information of the boiler is acquired, the first coal slime adding amount is determined according to the load information and a first preset function, and the adding amount of the coal slime is controlled based on the first coal slime adding amount. Since the scheme provided in the embodiments of the present application can determine the first coal slime adding amount based on the actual working condition of the boiler, and further control the actual adding amount of the coal slime based on the first coal slime adding amount, the adding of the coal slime can be accurately controlled according to the actual working condition of the boiler, and thus the adding amount of the coal slime can be matched with the actual working condition of the boiler, so that the situation of coking in the furnace is avoided, thereby ensuring the safe operation of the boiler unit. On the other hand, since the material adding control method provided in the embodiments of the present application can be executed by an electronic device, automatic control of the adding of the coal slime can be realized, which can play an accurate and timely control role compared with manual control by technical personnel according to experience, thereby further ensuring the safety of the operation of the boiler unit.

[0043] In actual application, when the unit reaches a certain load, the amount of returned material in the bed and the amount of material can ensure normal combustion after the addition of the coal slime. Therefore, in order to enable the coal slime to be normally combusted after being conveyed into the furnace and enable heat to be fully utilized, in an implementation mode, after the load information of the boiler is acquired in step 101, the material adding control method provided in the embodiments of the present application further includes: judging whether the load information is greater than or equal to a target load. Step 102 of determining the first coal slime adding amount according to the load information and a first preset function includes: in response to the load information being greater than or equal to the target load, determining the first coal slime adding amount according to the load information and the first preset function.

[0044] For example, the target load can be 40% of the rated load of the boiler unit, and the target load can also be set to other numerical values according to actual conditions.

[0045] In the embodiments of the present application, step 102 of determining the first coal slime adding amount according to the load information and a first preset function is performed only when the load information is greater than or equal to the target load. It can be understood that when the load information is less than the target load, the coal slime can be stopped from being conveyed into the furnace for combustion, which can avoid conveying the coal slime into the furnace for combustion when the coal slime combustion condition is not met in the furnace. When the load information is greater than or equal to the target load, the first coal slime adding amount is calculated, and the adding amount of the coal slime is controlled based on the first coal slime adding amount, so that the adding amount of the coal slime can be matched with the actual working condition of the boiler.

[0046] It can be understood that, by using the above scheme, the first coal slime addition amount is calculated only after the boiler reaches a certain load, and the actual coal slime addition amount is controlled based on the first coal slime addition amount, which can avoid the coal slime being transported into the furnace for combustion when the coal slime combustion condition in the furnace is not met, thereby achieving full combustion of the coal slime while avoiding the occurrence of coking in the furnace, so as to further ensure the safe operation of the boiler unit.

[0047] In actual application, the bed temperature is also an important factor affecting the combustion of coal slime. Adding a large amount of coal slime under the condition of low or high bed temperature will affect the combustion in the furnace, thereby causing the consequence of coking of the boiler. Therefore, in order to further ensure the safe operation of the boiler unit, in one embodiment, before the step 103 of controlling the addition amount of coal slime based on the first coal slime addition amount, the material addition control method provided by the embodiment of the present application further comprises: obtaining bed temperature information of the boiler; determining a second coal slime addition amount according to the bed temperature information and a second preset function; and the step 103 of controlling the addition amount of coal slime based on the first coal slime addition amount comprises: determining a third coal slime addition amount according to the first coal slime addition amount and the second coal slime addition amount, and controlling the addition amount of the coal slime based on the third coal slime addition amount.

[0048] The bed temperature information can be the real-time average bed temperature in the furnace.

[0049] The determination of the second coal slime addition amount according to the bed temperature information and the second preset function can be that the bed temperature information is brought into the second preset function to calculate the second coal slime addition amount.

[0050] The second preset function can be a piecewise function drawn in advance according to different bed temperatures and corresponding coal slime addition correction values. The piecewise function can be drawn according to the data in Table 2, where the horizontal coordinate X is different bed temperatures, and the vertical coordinate Y is corresponding coal slime addition correction values:

[0051] Table 2

[0052] X Y 830 -15％ 840 -5％ 850 0 860 0 870 0 880 0 890 0 900 0 910 0 920 0

[0053] In the embodiment of the present application, the second coal slime addition amount (i.e. the coal slime addition correction value) calculated according to the bed temperature information and the second preset function can be a positive value or a negative value. The determination of the third coal slime addition amount according to the first coal slime addition amount and the second coal slime addition amount can be that the first coal slime addition amount and the second coal slime addition amount are added to obtain the third coal slime addition amount.

[0054] In the embodiments of the present application, the adding amount of the coal slime can be controlled based on the third adding amount of the coal slime, which can be used to guide the actual adding amount of the coal slime in the boiler. In actual application, the adding amount of the coal slime can be controlled based on the third adding amount of the coal slime, which can be directly controlled according to the third adding amount of the coal slime, for example, the actual adding amount of the coal slime is directly adjusted to the third adding amount of the coal slime, or the actual adding amount of the coal slime can be controlled based on the third adding amount of the coal slime in combination with other influencing factors.

[0055] It can be understood that, by using the above scheme, the second adding amount of the coal slime is determined according to the bed temperature information and the second preset function, the third adding amount of the coal slime is determined according to the first adding amount of the coal slime and the second adding amount of the coal slime, and the adding amount of the coal slime is controlled based on the third adding amount of the coal slime, so that the first adding amount of the coal slime can be corrected according to the bed temperature information, and then the bed temperature influencing factor is superimposed when the actual adding amount of the coal slime is determined, so that the adding amount of the coal slime can be more matched with the actual working condition of the boiler, thereby the safety of the operation of the boiler unit can be further improved. On the other hand, by correcting the first adding amount of the coal slime according to the change of the bed temperature, the adding amount of the coal slime can be adjusted in time, thereby the adding amount of the coal slime can be increased, and large-scale blending of the coal slime can be realized.

[0056] In the embodiments of the present application, the third adding amount of the coal slime can be determined according to the first adding amount of the coal slime and the second adding amount of the coal slime as described above, or the adding amount of the coal slime input by the technician.

[0057] In actual application, after the third adding amount of the coal slime is determined, the material adding control method provided by the embodiments of the present application can further include: determining a target limiting rate; then, the adding amount of the coal slime is controlled based on the third adding amount of the coal slime and the target limiting rate.

[0058] The target limiting rate can be used to limit the rate of conveying the coal slime, and the specific value of the target limiting rate can be set according to actual needs.

[0059] It can be understood that, by further limiting the rate of conveying the coal slime into the furnace, the above scheme can avoid that a large amount of coal slime is suddenly conveyed into the furnace, which can cause great disturbance to the working condition of the unit, and can further avoid the occurrence of coking.

[0060] Further, in an embodiment, the controlling the adding amount of the coal slime based on the third adding amount of the coal slime comprises: determining a target adding amount of the coal slime according to a first preset adding amount of the coal slime, a second preset adding amount of the coal slime and the third adding amount of the coal slime; and controlling the adding amount of the coal slime according to the target adding amount of the coal slime; wherein the first preset adding amount of the coal slime is less than the second preset adding amount of the coal slime.

[0061] The first preset adding amount of the coal slime and the second preset adding amount of the coal slime can be set according to actual needs. For example, the first preset adding amount of the coal slime can be 25% of the maximum adding amount of the coal slime, and the second preset adding amount of the coal slime can be 60% of the maximum adding amount of the coal slime.

[0062] In the embodiment, the target adding amount of the coal slime is determined according to the first preset adding amount of the coal slime, the second preset adding amount of the coal slime and the third adding amount of the coal slime. Specifically, the third adding amount of the coal slime and the second preset adding amount of the coal slime can be compared to obtain a smaller value, and then the smaller value and the first preset adding amount of the coal slime can be compared to obtain a larger value, and the larger value can be determined as the target adding amount of the coal slime.

[0063] The controlling the adding amount of the coal slime according to the target adding amount of the coal slime can be directly adjusting the actual adding amount of the coal slime to the target adding amount of the coal slime.

[0064] It can be understood that, by using the above scheme, the first preset adding amount of the coal slime and the second preset adding amount of the coal slime are set to further determine the final target adding amount of the coal slime, and the actual adding amount of the coal slime is controlled according to the target adding amount of the coal slime, which can further improve the safety of the operation of the boiler unit.

[0065] In order to further improve the safety of the operation of the unit, in an embodiment, after the target adding amount of the coal slime is determined, the material adding control method provided by the embodiment further comprises: judging whether target information is received; and in response to receiving the target information, setting the target adding amount of the coal slime to zero.

[0066] In the embodiment, the target information can include any one or more of the following information: the unit load is lower than the target load, the unit has an auxiliary machine fault and a reduced load (RB) action, the unit has a total fuel trip (MFT) action, the bed temperature is lower than a first target temperature, the bed temperature is higher than a second target temperature, and the coal slime conveying line has a fault.

[0067] The target load can be 40% of the rated load of the unit. The first target temperature and the second target temperature can be set according to actual conditions, for example, the first target temperature can be 830℃, and the second target temperature can be 920℃. The failure of the coal slime conveying line can be a failure of the frequency converter of the feeding pump and / or a failure of the coal slime pump.

[0068] It can be understood that, by setting the target coal slime addition amount to zero in response to receiving the target information, that is, by controlling no coal slime to be conveyed into the furnace when the situation corresponding to the target information occurs, the safety of the unit operation can be further improved.

[0069] Considering that the unit can include multiple sets of lines for conveying coal slime (generally, one conveying line corresponds to one coal slime pump), in order to facilitate the control of the amount of coal slime conveyed by each conveying line, in an embodiment, after the target coal slime addition amount is determined and the target information is not received, the material addition control method provided by the embodiments of the present application further includes: determining the amount of coal slime conveyed by a single coal slime pump according to the target coal slime addition amount and the number of coal slime pumps.

[0070] In actual application, there can be individual coal slime pumps under maintenance and test operation, and there can be conveying lines corresponding to some coal slime pumps under the operation state of manual control by technicians. Therefore, in the embodiments of the present application, the amount of coal slime conveyed by a single coal slime pump can be determined according to the target coal slime addition amount and the number of coal slime pumps, specifically, the amount of coal slime N conveyed by the conveying line under the operation state of manual control can be subtracted from the target coal slime addition amount, and then the coal slime amount N is divided by the number of coal slime pumps under the operation state of automatic control, so that the amount of coal slime conveyed by a single coal slime pump can be determined.

[0071] It can be understood that, by the target coal slime addition amount and the number of coal slime pumps, the amount of coal slime conveyed by a single coal slime pump can be determined, and then each coal slime pump can be controlled according to the amount of coal slime conveyed by a single coal slime pump, so that accurate and timely conveying of coal slime can be achieved.

[0072] The material addition control method provided by the present application can further determine the coal supply amount matched with the target coal slime addition amount of the unit on the basis of controlling the addition amount of the coal slime according to the target coal slime addition amount. Therefore, in an embodiment, the material addition control method provided by the embodiments of the present application further includes: obtaining the real-time coal supply amount of the design coal type corresponding to the boiler; determining the target coal supply amount of the design coal type corresponding to the boiler according to the real-time coal supply amount and the target coal slime addition amount; and controlling the addition amount of the design coal type based on the target coal supply amount.

[0073] The design coal type is a coal type used by the boiler power plant in design, and the boiler power plant performs preliminary design and thermal calculation of the boiler according to the coal type data to determine main operation parameters, performance data, structure and arrangement of the heating surface of the boiler. The design coal type is a coal type most commonly used by the power plant in operation.

[0074] The target coal feeding amount can be a coal feeding amount (a coal feeding amount of the design coal type) matched with the target coal slime adding amount that should be delivered to the boiler. After the target coal feeding amount is determined, the design coal type can be delivered to the boiler according to the target coal feeding amount.

[0075] In the embodiment of the present application, the target coal feeding amount of the design coal type corresponding to the boiler can be determined according to the real-time coal feeding amount and the target coal slime adding amount. Specifically, the target coal slime adding amount can be converted into a coal amount of the design coal type, and then the real-time coal feeding amount is reduced by the coal amount converted from the target coal slime adding amount to obtain a first target coal feeding amount. Based on the first target coal feeding amount, the target coal feeding amount of the design coal type corresponding to the boiler is determined.

[0076] The target coal slime adding amount can be converted into the coal amount of the design coal type, and specifically, the conversion can be performed based on a third preset function. The third preset function can be obtained by the following formula (1) and formula (2):

[0077] m = p s h1 (1)

[0078] Wherein, m is the coal slime pumping amount per unit time (one hour), s is the cross-sectional area of the bottom of the coal slime bin, p is the density of the coal slime prepared in the coal slime bin, and h1 is the coal slime descending height of the coal slime bin. m corresponds to the above-mentioned target coal slime adding amount Q (%).

[0079]

[0080] Wherein, the water content of the coal slime is set to 30%, B is the coal slime conversion corresponding design coal type coal feeding amount, ton; C0 is the specific heat capacity of water, J / Kg·℃; t1 is the exhaust gas temperature, ℃; t2 is the coal slime bin temperature, ℃; q1 is the coal slime heat value, J / Kg; and q is the design standard coal heat value, J / Kg.

[0081] In actual application, the target coal feeding amount of the design coal type corresponding to the boiler is not only affected by the target coal slime adding amount, but also possibly affected by the operation state of the boiler. Therefore, further, in an embodiment, the material adding control method provided by the present application further comprises: determining a second target coal feeding amount according to a boiler instruction, a boiler air volume and a boiler oxygen amount; and determining the target coal feeding amount of the design coal type corresponding to the boiler based on the first target coal feeding amount and the second target coal feeding amount.

[0082] It can be understood that, by using the above scheme, after the target coal slime addition amount is determined and the addition of coal slime is controlled, the coal feeding amount matched with the target coal slime addition amount can be further determined, so that the maximum coal slime blending can be realized.

[0083] In actual application, the control logic diagram corresponding to the material addition control method provided by the embodiment of the application can be as shown in Figure 2 .

[0084] Figure 2 The control logic in the above embodiment can be referred to the above embodiment, and will not be described here again.

[0085] Among them, the function block 3, 7 (T1, T2 switching function block) switches to different control loops when the trigger condition is met, which are manual control loop and automatic control loop respectively. The function block 2 (NOT function block) is used to take the inverse of the on-off signal state, and outputs the opposite state. The function block 1 (Σ summation function block) is used for summation operation of multiple values. The function block 4 (rate limiting function block) is used to limit the rate of the input signal. The function block 5, 10 (small selection function block) is used to select the minimum value in multiple values. The function block 6 (large selection function block) is used to select the maximum value in multiple values. The function block 8, 12 (addition and subtraction calculation function block) is used for addition and subtraction operation of multiple values. The function block 9 (proportional integral control module) is used for proportional integral operation of set value and feedback value.

[0086] It should be noted that the material addition control method provided by the embodiment of the application can be executed by the material addition control device. In the embodiment of the application, the material addition control device executes the material addition control method, and the material addition control device provided by the embodiment of the application is described.

[0087] The embodiment of the application further provides a material addition control device 20, as shown in Figure 3 , the material addition control device 20 comprises:

[0088] The acquisition module 201 is configured to acquire the load information of the boiler.

[0089] The material can refer to coal slime. The boiler can be a boiler unit; and the load information can be a unit load instruction of the boiler unit.

[0090] The determination module 202 is configured to determine a first coal slime addition amount according to the load information and a first preset function.

[0091] The first coal slime adding amount can also be referred to as a basic coal slime adding amount, and a coal slime amount actually added to the boiler (corresponding to a target coal slime adding amount in the following) can be further determined on the basis of the basic coal slime adding amount. The first preset function can be referred to in the above embodiment, and will not be described here again.

[0092] The control module 203 is configured to control the adding amount of the coal slime based on the first coal slime adding amount.

[0093] The control module 203 is configured to control the adding amount of the coal slime based on the first coal slime adding amount.

[0094] It can be understood that by using the material adding control device 20 provided in the embodiments of the present application, the load information of the boiler is acquired, the first coal slime adding amount is determined according to the load information and a first preset function, and the adding amount of the coal slime is controlled based on the first coal slime adding amount. Since the scheme provided in the embodiments of the present application can determine the first coal slime adding amount based on the actual working condition of the boiler, and further control the actual adding amount of the coal slime based on the first coal slime adding amount, the adding of the coal slime can be accurately controlled according to the actual working condition of the boiler, and thus the adding amount of the coal slime can be matched with the actual working condition of the boiler, so as to avoid the situation of coking in the furnace, thereby ensuring the safe operation of the boiler unit. On the other hand, since the material adding control method provided in the embodiments of the present application can be executed by an electronic device, the automatic control of the coal slime adding can be realized, and compared with manual control by technical personnel according to experience, the accurate and timely control can be achieved, thereby further ensuring the safety of the boiler unit operation.

[0095] In an embodiment, the material adding control device 20 provided in the embodiments of the present application further includes a judgment module.

[0096] The judgment module is configured to judge whether the load information is greater than or equal to a target load, and the acquisition module 202 is specifically configured to determine the first coal slime adding amount according to the load information and the first preset function in response to the load information being greater than or equal to the target load.

[0097] In an implementation, the acquisition module 201 is further configured to acquire bed temperature information of the boiler; the acquisition module 202 is further configured to determine a second coal slime adding amount according to the bed temperature information and a second preset function, and determine a third coal slime adding amount according to the first coal slime adding amount and the second coal slime adding amount; and the acquisition module 203 is specifically configured to control the adding amount of the coal slime based on the third coal slime adding amount.

[0098] In an implementation, the acquisition module 202 is further configured to determine a target coal slime adding amount according to a first preset coal slime adding amount, a second preset coal slime adding amount and the third coal slime adding amount, where the first preset coal slime adding amount is less than the second preset coal slime adding amount; and the acquisition module 203 is specifically configured to control the adding amount of the coal slime according to the target coal slime adding amount.

[0099] In an implementation, the judgment module is further configured to judge whether target information is received; and the acquisition module 203 is further configured to set the target coal slime adding amount to zero in response to receiving the target information.

[0100] In an implementation, the acquisition module 201 is further configured to acquire a real-time coal adding amount of a design coal type corresponding to the boiler; the acquisition module 202 is further configured to determine a target coal adding amount of the design coal type corresponding to the boiler according to the real-time coal adding amount and the target coal slime adding amount; and the acquisition module 203 is further configured to control the adding amount of the design coal type based on the target coal adding amount.

[0101] Based on the material adding control device 20 provided in the above-mentioned embodiments of the present application, the embodiments of the present application further provide a material adding control system 30, as shown in the accompanying drawings, which comprises a boiler 301, a coal slime conveying device 302 and the material adding control device 20 provided in the above-mentioned embodiments of the present application; the boiler 301 and the coal slime conveying device 302 are connected with the material adding control device 20. Figure 4

[0102] The boiler 301 can be a boiler unit. The boiler 301 and the coal slime conveying device 302 are connected with the material adding control device 20, specifically, can be connected with an electronic device corresponding to the material adding control device 20.

[0103] ​The material adding control device 20 is connected with the boiler 301, and can obtain the boiler load information, bed temperature information, target information, and real-time coal supply of the corresponding design coal type from the boiler 301. The boiler unit further includes a control end, which can be used to receive instructions manually input by a technician. The material adding control device 20 can also obtain the instructions manually input by the technician from the boiler unit, such as the coal slime adding amount manually input by the technician, and can also obtain the automatic / manual control switching instruction manually input by the technician.

[0104] The coal slime conveying device 302 specifically includes a coal slime preparation system, a coal slime bin, a variable frequency feeding pump, a coal slime pump, and a coal slime conveying pipeline connected in sequence, and the outlet of the coal slime conveying pipeline is in communication with the furnace. The material adding control device 20 is connected with the coal slime conveying device 302, and can control the coal slime conveying device 302.

[0105] It can be understood that, by using the material adding control system 30 provided in the embodiments of the present application, the load information of the boiler is obtained, the first coal slime adding amount is determined according to the load information and a first preset function, and the adding amount of the coal slime is controlled based on the first coal slime adding amount. Since the scheme provided in the embodiments of the present application can determine the first coal slime adding amount based on the actual working condition of the boiler, and further control the actual coal slime adding amount based on the first coal slime adding amount, the adding of the coal slime can be accurately controlled according to the actual working condition of the boiler, and thus the adding amount of the coal slime can be matched with the actual working condition of the boiler, so that the coking in the furnace can be avoided, and the safe operation of the boiler unit can be ensured.

[0106] It should be noted that the electronic device in the embodiments of the present application includes a mobile electronic device and a non-mobile electronic device. Specifically, the electronic device includes but is not limited to: a radio frequency unit, a network module, an audio output unit, an input unit, a sensor, a display unit, a user input unit, an interface unit, a memory, and a processor, etc. The processor is configured to obtain the load information of the boiler, determine the first coal slime adding amount according to the load information and a first preset function, and control the adding amount of the coal slime based on the first coal slime adding amount.

[0107] The embodiments of the present application further provide a readable storage medium, which stores a program or instructions, and the program or instructions are executed by a processor to implement the processes of the above-mentioned material adding control method embodiments, and achieve the same technical effects. To avoid repetition, details are not described herein.

[0108] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0109] The chip provided in the embodiments of the present application includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is used to run programs or instructions, realizes the processes of the above material adding control method embodiments, and can achieve the same technical effects. To avoid repetition, details are not described here.

[0110] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system-level chip, a system chip, a chip system, or a system-on-chip chip, etc.

[0111] It should be noted that in this document, the term "comprising" or "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to the order of performing the functions as shown or discussed, but can also include performing the functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted or combined. In addition, the features described with reference to some examples can be combined in other examples.

[0112] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of software and necessary general hardware platform, of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a plurality of instructions for making a terminal (which can be a mobile phone, computer, server, or network equipment, etc.) execute the method described in each embodiment of the present application.

[0113] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative, but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims.

Claims

1. A material addition control method characterized by, The method comprises: acquiring load information and bed temperature information of a boiler; determining a first coal slime addition amount according to the load information and a first preset function, and determining a second coal slime addition amount according to the bed temperature information and a second preset function, wherein the first preset function is a broken line function obtained in advance according to different boiler loads and corresponding appropriate coal slime amounts, and the second preset function is a broken line function obtained in advance according to different bed temperatures and corresponding coal slime addition correction values; calculating a sum of the first coal slime addition amount and the second coal slime addition amount as a third coal slime addition amount; comparing the third coal slime addition amount with a second preset coal slime addition amount, taking a smaller value of the two, then comparing the smaller value with a first preset coal slime addition amount, taking a larger value of the two, and determining the larger value as a target coal slime addition amount, wherein the first preset coal slime addition amount is smaller than the second preset coal slime addition amount; controlling the addition amount of coal slime based on the target coal slime addition amount; The control method further comprises: acquiring a real-time coal supply amount of a design coal type corresponding to the boiler; converting the target coal slime addition amount into a coal amount of the design coal type based on a third preset function, wherein the third preset function is obtained through formula (1) and formula (2): m = p s h1(1); wherein, m is the target coal slime addition amount, s is the cross-sectional area of the bottom of the coal slime bin, p is the density of the coal slime prepared by the coal slime bin, and h1 is the coal slime drop height of the coal slime bin. （2）； Wherein, the coal slime moisture content is set as , is the coal amount of the corresponding design coal type converted by the coal slime; is the specific heat capacity of water; is the flue gas temperature; is the coal slime bin temperature; is the coal slime calorific value; is the design standard coal calorific value; subtracting the coal amount converted from the target coal slime addition amount from the real-time coal supply amount to obtain a first target coal supply amount; determining a target coal supply amount of the design coal type based on the first target coal supply amount; controlling the addition amount of the design coal type based on the target coal supply amount; The control method further comprises: determining whether target information is received; and in response to receiving the target information, setting the target coal slime addition amount to zero; The target information comprises at least one of the following: a unit load being lower than a target load, a unit auxiliary machine fault reducing load (RB) action occurring, a unit total fuel trip (MFT) action occurring, a bed temperature being lower than a first target temperature, a bed temperature being higher than a second target temperature, and a coal slime conveying line fault occurring; The control method further comprises: subtracting a coal slime amount conveyed by a conveying line in a manual control operation state from the target coal slime addition amount to obtain a coal slime amount N; dividing the coal slime amount N by a number of coal slime pumps in an automatic control normal operation state to obtain a coal slime conveying amount corresponding to a single coal slime pump. After the load information of the boiler is acquired, the control method further comprises: determining whether the load information is greater than or equal to a target load; and determining the first coal slime addition amount according to the load information and the first preset function comprises: in response to the load information being greater than or equal to the target load, determining the first coal slime addition amount according to the load information and the first preset function.

2. The material addition control method according to claim 1, characterized by, ​ 3. A material addition control apparatus, characterized by, The device comprises: an acquisition module, configured to acquire load information and bed temperature information of a boiler; a determination module, configured to determine a first coal slime addition amount according to the load information and a first preset function, and determine a second coal slime addition amount according to the bed temperature information and a second preset function, wherein the first preset function is a broken line function obtained in advance according to different boiler loads and corresponding appropriate coal slime amounts, and the second preset function is a broken line function obtained in advance according to different bed temperatures and corresponding coal slime addition correction values; a calculation module, configured to calculate a sum of the first coal slime addition amount and the second coal slime addition amount as a third coal slime addition amount; a comparison module, configured to compare the third coal slime addition amount with a second preset coal slime addition amount, take a smaller value of the two, and then compare the smaller value with a first preset coal slime addition amount, take a larger value of the two, and determine the larger value as a target coal slime addition amount, wherein the first preset coal slime addition amount is smaller than the second preset coal slime addition amount; a control module, configured to control an addition amount of coal slime based on the target coal slime addition amount; the control module is further configured to acquire a real-time coal feeding amount of a design coal type corresponding to the boiler, and convert the target coal slime addition amount into a coal amount of the design coal type based on a third preset function, wherein the third preset function is obtained through formula (1) and formula (2): m = p s h1(1); wherein, m is the target coal slime addition amount, s is the cross-sectional area of the bottom of the coal slime bin, p is the density of the coal slime prepared by the coal slime bin, and hi is the coal slime descent height of the coal slime bin. （2）； Wherein, the coal slime moisture content is set as , The coal amount of the coal slime converted to the corresponding design coal; The specific heat capacity of water; The flue gas temperature; The coal slime bin temperature; The coal slime calorific value; The design standard coal calorific value; subtract the coal amount converted from the target coal slime addition amount from the real-time coal feeding amount to obtain a first target coal feeding amount; determine a target coal feeding amount of the design coal type based on the first target coal feeding amount; control an addition amount of the design coal type based on the target coal feeding amount; a judgment module, configured to judge whether target information is received; the acquisition module is further configured to, in response to receiving the target information, set the target coal slime addition amount to zero; the target information comprises at least one of the following: a unit load lower than a target load, a unit auxiliary machine fault reduction load (RB) action, a unit total fuel trip (MFT) action, a bed temperature lower than a first target temperature, a bed temperature higher than a second target temperature, and a coal slime conveying line fault; the determination module is further configured to subtract a coal slime amount conveyed by a conveying line in a manual control operation state from the target coal slime addition amount to obtain a coal slime amount N; divide the coal slime amount N by a number of coal slime pumps in an automatic control normal operation state to obtain a coal slime conveying amount corresponding to a single coal slime pump.

4. A material addition control apparatus according to claim 3, characterised in that, the judgment module is configured to judge whether the load information is greater than or equal to a target load; and the determination module is specifically configured to, in response to the load information being greater than or equal to the target load, determine the first coal slime addition amount according to the load information and the first preset function.

5. A material addition control system, characterized by, The system comprises a boiler, a coal slime conveying device, and a material addition control device according to any one of claims 3-4; the boiler and the coal slime conveying device are both connected with the material addition control device.

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