An automatic water supply control system for slag removal

Abstract

The present application relates to the technical field of boiler slag removal, and in particular to an automatic water replenishment control system for slag removal. The present application includes: a monitoring unit, which establishes multiple monitoring points according to the circulation path of cold slag water; the monitoring unit also includes multiple monitoring submodules, and the monitoring submodules are used to collect cold slag water parameters at each monitoring point; a central control unit, which is used to generate cold slag water loss parameters according to boiler operation parameters, and determine whether to generate a first-level water replenishment plan according to the cold slag water loss parameters; the central control unit is also used to generate a cold slag water evaluation value according to the water quality parameters of the cold slag water at each monitoring point, and set a second-level water replenishment plan according to the cold slag water evaluation value; by establishing multiple monitoring cycles, the cold slag water in the slag scoop machine is periodically monitored, and the corresponding first-level water replenishment plan is set according to the accumulated loss of cold slag water at the preset feedback time node, so that the amount of cold slag water in the slag scoop machine is in a reasonable range, ensuring the cooling effect on the slag and improving the overall slag removal efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of boiler slag removal, and in particular to an automatic water replenishment control system for slag removal. Background Art

[0002] The slag scooping machine technology realizes mechanical slag removal and ash-slag separation. The slag falls into the slag scooping machine, is cooled by water, enters the slag crusher for crushing, and finally falls into the slag bin for storage. The overflow water of the slag scooping machine and slag bin can be recycled.

[0003] The overflow water of the slag remover flows into the overflow pool through the ditch. The cold slag water after preliminary sedimentation treatment is first transported by a circulating water pump to the high-efficiency concentrator arranged outside the boiler room for filtration and sedimentation, and then enters the heat exchanger for cooling. The cold slag water is cooled to about 40°C in the heat exchanger and then returned to the slag remover.

[0004] Large coke lumps fall directly into the water tank of the slag remover, which can easily cause the cold slag water to overflow and splash and evaporate. This will cause the cold slag water in the slag remover to continue to decrease, thereby reducing the slag removal efficiency. In addition, there are also problems such as scaling in the return water system pipes. Summary of the invention

[0005] The purpose of this application is: to solve the above-mentioned technical problems, this application provides an automatic water replenishment control system for slag removal, aiming to ensure that the cooling slag water in the slag remover remains in a safe range, reduce the probability of scaling in the return water pipe, and improve the slag removal efficiency.

[0006] In some embodiments of the present application, by establishing multiple monitoring cycles, the cold slag water in the slag remover is periodically monitored, and a corresponding first-level water replenishment plan is set according to the cumulative loss of cold slag water at a preset feedback time node, so that the amount of cold slag water in the slag remover is within a reasonable range, thereby ensuring the cooling effect on the slag and improving the overall slag removal efficiency.

[0007] In some embodiments of the present application, by adding a monitoring unit, the return water pipe is monitored in different areas, and the collected water quality parameters are analyzed to obtain the scaling probability of each monitoring point, and a secondary water replenishment plan is set to dynamically adjust the dosage to avoid scaling problems in the return water pipe.

[0008] In some embodiments of the present application, an automatic water replenishment control system for slag removal is provided, comprising:

[0009] The monitoring unit establishes multiple monitoring points according to the circulation path of the cold slag water;

[0010] The monitoring unit further comprises a plurality of monitoring submodules, wherein the monitoring submodules are used to collect cold slag water parameters at each monitoring point;

[0011] The central control unit is used to generate cold slag water loss parameters according to the boiler operation parameters, and determine whether to generate a first-level water replenishment plan according to the cold slag water loss parameters;

[0012] The central control unit is also used to generate a cold slag water evaluation value according to the water quality parameters of the cold slag water at each monitoring point, and set a secondary water replenishment plan according to the cold slag water evaluation value;

[0013] A water replenishment unit, wherein the central control unit sets working parameters of the water replenishment unit according to the primary water replenishment plan and the secondary water replenishment plan;

[0014] The central control unit comprises:

[0015] A first processing module is used to set a plurality of feedback time nodes and establish a plurality of monitoring cycles according to the feedback time nodes;

[0016] The second processing module is used to obtain slag parameters and generate the cumulative cold slag water loss at each feedback time node according to a preset slag-cold slag water loss model;

[0017] The second processing module is also used to determine whether to generate a first-level water replenishment plan according to the cumulative loss of cold slag water;

[0018] The third processing module is used to establish a monitoring point sequence H according to the position parameters of each monitoring point, H = (h1, h2...hi...hm), where m is the number of monitoring points, and hi is the i-th monitoring point that the cold slag water passes after flowing out of the overflow pool;

[0019] The fourth processing module obtains the water quality parameters of each monitoring point at the current feedback time node, and establishes the impurity content difference series F at the current feedback time node, F= (f1, f2…f i …f m-1 ), where fi is the impurity content difference between the i+1th monitoring point and the ith monitoring point at the current feedback time node;

[0020] The fifth processing module is used to generate a cold slag water evaluation value at the current feedback time node, and determine whether to generate a secondary water replenishment plan based on the cold slag water evaluation value at the current feedback time node.

[0021] In some embodiments of the present application, the water replenishment unit includes:

[0022] The first water replenishment module is arranged at the water inlet of the slag scooping machine, and the central control unit sets the working parameters of the first water replenishment module according to the first-level water replenishment plan;

[0023] The second water replenishment module is arranged at the outlet of the overflow pool, and the central control unit sets the working parameters of the second water replenishment module according to the secondary water replenishment plan.

[0024] In some embodiments of the present application, the generating of the accumulated cold slag water loss at each feedback time node includes:

[0025] Obtain the slag discharge parameters within the monitoring period corresponding to the current feedback time node;

[0026] Generate average slag temperature and slag discharge amount according to slag discharge parameters;

[0027] According to the average slag temperature, slag discharge and slag-cold slag water loss model, the cold slag water evaporation amount a1, cold slag water overflow amount a2 and cold slag water system loss amount a3 within the monitoring period are generated;

[0028] Get the cold slag water return flow a4 within the monitoring period corresponding to the current feedback time node;

[0029] Generate the cold slag water loss b within the monitoring period;

[0030] ;

[0031] Establish a cold slag water loss series B, B=(b1, b2…bi…bn), where n is the number of monitoring cycles between the current feedback time node and the previous water replenishment time node, bi is the cold slag water loss in the monitoring cycle corresponding to the i-th feedback time node after the previous water replenishment time node; bn is the cold slag water loss in the monitoring cycle corresponding to the current feedback time node;

[0032] Generate the accumulated loss of cold slag water c at the current feedback time node;

[0033] .

[0034] In some embodiments of the present application, the determination of whether to generate a primary water replenishment plan includes:

[0035] Preset the first cold slag water loss threshold C1;

[0036] If the accumulated cold slag water loss at the current feedback time node c≥C1, a first-level water replenishment instruction is generated;

[0037] According to the first-level water replenishment instruction, the number of monitoring cycles n' between the current feedback time node and the previous water replenishment time node is obtained;

[0038] The water replenishment speed v is set according to the ratio d of the cumulative loss of cold slag water c and the number of monitoring cycles n';

[0039] A first-level water replenishment plan is generated based on the cumulative cold slag water loss c and the water replenishment speed v.

[0040] In some embodiments of the present application, the setting of the water replenishment speed v includes:

[0041] Preset a first ratio interval (D1, D2), a second ratio interval (D2, D3) and a third ratio interval (D3, D4);

[0042] If the ratio d is within the preset first ratio interval, the water replenishment speed v is set to the first water replenishment speed V1, ie v=V1;

[0043] If the ratio d is within the preset second ratio interval, the water replenishment speed v is set to the second water replenishment speed V2, ie v=V2;

[0044] If the ratio d is within the preset third ratio interval, the water replenishment speed v is set to the third water replenishment speed V3, that is, v=V3, and V1 <V2<V3。

[0045] In some embodiments of the present application, the generating of the cold slag water evaluation value at the current feedback time node includes:

[0046] Generate scaling reference values ​​between adjacent monitoring points at the current feedback time node in sequence;

[0047] ;

[0048] Among them, n1 is the number of monitoring cycles between the time node of the last secondary water replenishment plan and the current feedback time node; Qe is the scaling reference value between the e+1th and eth monitoring points at the current feedback time node; fei is the impurity content difference between the e+1th and eth monitoring points corresponding to the i-th feedback time node after the last secondary water replenishment plan is executed; t is the time interval between the time node of the last secondary water replenishment plan and the current feedback time node;

[0049] Generate the cold slag water evaluation value g at the current feedback time node;

[0050] ; Among them, Qi is the scaling reference value between the i+1th and ith monitoring points at the current feedback time node; βi is the influencing factor of Qi.

[0051] In some embodiments of the present application, the determination of whether to generate a secondary water replenishment plan includes:

[0052] Preset the first cold slag water evaluation value threshold G ';

[0053] If g ≥ G', a secondary water replenishment instruction is generated at the current feedback time node;

[0054] Set the dosage j and dosage speed according to the secondary water replenishment instruction and the cold slag water evaluation value g;

[0055] Generate a secondary water replenishment plan based on the dosage j and the dosage speed.

[0056] In some embodiments of the present application, when setting the dosage j, it includes:

[0057] Preset the first slag cooling water evaluation value interval (G1, G2), the second slag cooling water evaluation value interval (G2, G3) and the third slag cooling water evaluation value interval (G3, G4);

[0058] If the cold slag water evaluation value g is in the preset first cold slag water evaluation value interval, the dosage j is set to the preset first dosage J1, ie j = J1;

[0059] If the cold slag water evaluation value g is in the preset second cold slag water evaluation value interval, the dosage j is set to the preset second dosage J2, ie j = J2;

[0060] If the cold slag water evaluation value g is within the preset third cold slag water evaluation value interval, the dosage j is set to the preset third dosage J3, that is, j=J3, and J1 <J2<J3。

[0061] Compared with the prior art, the automatic water replenishment control system for slag removal in the embodiment of the present application has the following beneficial effects:

[0062] By establishing multiple monitoring cycles, the cold slag water in the slag remover is periodically monitored, and the corresponding first-level water replenishment plan is set according to the cumulative loss of cold slag water at the preset feedback time node, so that the water volume of the cold slag water in the slag remover is in a reasonable range, ensuring the cooling effect of the slag and improving the overall slag removal efficiency.

[0063] By adding monitoring units, the return pipe is monitored in different areas, and the scale formation probability of each monitoring point is obtained based on the collected water quality parameters. A secondary water replenishment plan is set to dynamically adjust the dosage to avoid scale formation problems in the return pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 It is a structural schematic diagram of an automatic water replenishment control system for slag removal in the preferred embodiment of the present application. DETAILED DESCRIPTION

[0065] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0066] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 a limitation on the present application.

[0067] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0068] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0069] like Figure 1 As shown, an automatic water replenishment control system for slag removal according to a preferred embodiment of the present application includes:

[0070] The monitoring unit establishes multiple monitoring points according to the circulation path of the cold slag water;

[0071] The monitoring unit also includes a plurality of monitoring submodules, which are used to collect cold slag water parameters at each monitoring point;

[0072] The central control unit is used to generate cold slag water loss parameters according to the boiler operation parameters, and determine whether to generate a first-level water replenishment plan according to the cold slag water loss parameters;

[0073] The central control unit is also used to generate cold slag water evaluation values ​​according to the water quality parameters of the cold slag water at each monitoring point, and set a secondary water replenishment plan according to the cold slag water evaluation values;

[0074] The water replenishment unit, the central control unit sets the working parameters of the water replenishment unit according to the primary water replenishment plan and the secondary water replenishment plan;

[0075] The central control unit includes:

[0076] A first processing module is used to set a plurality of feedback time nodes and establish a plurality of monitoring cycles according to the feedback time nodes;

[0077] The second processing module is used to obtain slag parameters and generate the cumulative cold slag water loss at each feedback time node according to a preset slag-cold slag water loss model;

[0078] The second processing module is also used to determine whether to generate a first-level water replenishment plan based on the cumulative loss of cold slag water;

[0079] The third processing module is used to establish a monitoring point sequence H according to the position parameters of each monitoring point, H = (h1, h2...hi...hm), where m is the number of monitoring points, and hi is the i-th monitoring point that the cold slag water passes after flowing out of the overflow pool;

[0080] The fourth processing module obtains the water quality parameters of each monitoring point at the current feedback time node, and establishes the impurity content difference series F at the current feedback time node, F= (f1, f2…f i …f m-1 ), where fi is the impurity content difference between the i+1th monitoring point and the ith monitoring point at the current feedback time node;

[0081] The fifth processing module is used to generate a cold slag water evaluation value at the current feedback time node, and determine whether to generate a secondary water replenishment plan based on the cold slag water evaluation value at the current feedback time node.

[0082] Specifically, the water replenishment unit includes:

[0083] The first water replenishment module is arranged at the water inlet of the slag scooping machine, and the central control unit sets the working parameters of the first water replenishment module according to the first-level water replenishment plan;

[0084] The second water replenishment module is arranged at the outlet of the overflow pool, and the central control unit sets the working parameters of the second water replenishment module according to the secondary water replenishment plan.

[0085] Specifically, in the above embodiment, a first-level water replenishment plan is established to periodically replenish the cold slag water in the slag scooper, thereby ensuring that the water level of the cold slag water in the slag scooper is in a safe range. At the same time, a second-level water replenishment plan is used to add supplementary water containing a descaling agent to the cold slag water that overflows the circulating treatment, thereby reducing the scaling probability of the return water pipe.

[0086] In a preferred embodiment of the present application, when generating the accumulated loss of cold slag water at each feedback time node, it includes:

[0087] Obtain the slag discharge parameters within the monitoring period corresponding to the current feedback time node;

[0088] Generate average slag temperature and slag discharge amount according to slag discharge parameters;

[0089] According to the average slag temperature, slag discharge and slag-cold slag water loss model, the cold slag water evaporation amount a1, cold slag water overflow amount a2 and cold slag water system loss amount a3 within the monitoring period are generated;

[0090] Get the cold slag water return flow a4 within the monitoring period corresponding to the current feedback time node;

[0091] Generate the cold slag water loss b within the monitoring period;

[0092] ;

[0093] Establish a cold slag water loss series B, B=(b1, b2…bi…bn), where n is the number of monitoring cycles between the current feedback time node and the previous water replenishment time node, bi is the cold slag water loss in the monitoring cycle corresponding to the i-th feedback time node after the previous water replenishment time node; bn is the cold slag water loss in the monitoring cycle corresponding to the current feedback time node;

[0094] Generate the accumulated loss of cold slag water c at the current feedback time node;

[0095] .

[0096] Specifically, the slag discharge amount and slag temperature of the boiler are collected by setting a weight sensor device and a temperature sensor device.

[0097] Specifically, according to the principle of evaporation heat exchange, an evaporation model of cold slag water in contact with hot slag is constructed, thereby establishing a fitting model between slag discharge, average slag temperature and cold slag water evaporation, and generating a slag-cold slag water loss model based on the fitting results. And the corresponding cold slag water evaporation a1 is generated based on the real-time slag discharge and the average slag temperature.

[0098] Specifically, by establishing a slag-cold slag water loss model, the cold slag water evaporation amount in a single monitoring cycle is generated according to the real-time slag discharge and the average slag temperature, and the cold slag water overflow amount is generated according to the slag discharge and the real-time water amount in the slag remover, and the cold slag water system loss amount is generated according to the slag removal amount in the current monitoring cycle.

[0099] Specifically, the loss of the cold slag water system refers to the total amount of cold slag water taken away by the slag when the slag picker is picking up slag. The return amount of cold slag water refers to the total amount of overflowed cold slag water that has been purified and returned to the slag picker during the current monitoring period.

[0100] Specifically, the system loss of slag cooling water refers to the inevitable loss during the operation process, that is, the loss caused by the operation process of the slag removal system. The system loss of slag cooling water can be set based on the analysis of the historical actual operating parameters of the slag removal system, and the corresponding system loss of slag cooling water a3 can be generated based on the monitoring cycle length.

[0101] Specifically, multiple flow sensors are set on the circulation path of the cold slag water (the overflow water of the slag scoop machine overflows into the overflow pool through the ditch, and the cold slag water returns to the pipe in the slag scoop machine after treatment) to obtain parameters such as the overflow amount a2 of the cold slag water and the reflux amount a4 of the cold slag water.

[0102] Specifically, when determining whether to generate a first-level water replenishment plan, it includes:

[0103] Preset the first cold slag water loss threshold C1;

[0104] If the accumulated cold slag water loss at the current feedback time node c≥C1, a first-level water replenishment instruction is generated;

[0105] According to the first-level water replenishment instruction, the number of monitoring cycles n' between the current feedback time node and the previous water replenishment time node is obtained;

[0106] The water replenishment speed v is set according to the ratio d of the cumulative loss of cold slag water c and the number of monitoring cycles n';

[0107] A first-level water replenishment plan is generated based on the cumulative cold slag water loss c and the water replenishment speed v.

[0108] Specifically, the historical operating parameters of different slag remover systems can be analyzed to set the corresponding first slag cooling water loss threshold. The first slag cooling water loss threshold means that when the loss reaches the current value, the slag cooling efficiency will be greatly reduced. When the cumulative slag cooling water loss c exceeds the first slag cooling water loss threshold, it means that there is less slag cooling water in the current slag remover, which will affect the slag cooling efficiency. At this time, a first-level water replenishment plan needs to be generated to replenish the slag cooling water in the slag remover in time to ensure the slag cooling efficiency.

[0109] Specifically, the water replenishment amount in the first-level water replenishment plan is the cumulative loss of cold slag water c, and continuous water replenishment is carried out according to the preset water replenishment speed v. When the water replenishment amount reaches the preset value, the water replenishment is stopped.

[0110] Specifically, when setting the water replenishment speed v, it includes:

[0111] Preset a first ratio interval (D1, D2), a second ratio interval (D2, D3) and a third ratio interval (D3, D4);

[0112] If the ratio d is within the preset first ratio interval, the water replenishment speed v is set to the first water replenishment speed V1, ie v=V1;

[0113] If the ratio d is within the preset second ratio interval, the water replenishment speed v is set to the second water replenishment speed V2, ie v=V2;

[0114] If the ratio d is within the preset third ratio interval, the water replenishment speed v is set to the third water replenishment speed V3, that is, v=V3, and V1 <V2<V3。

[0115] Specifically, the larger the cumulative loss of cold slag water c and the monitoring period n', the faster the loss rate of cold slag water in the current slag remover system, and the corresponding water replenishment rate should also be gradient adjusted. The setting of the ratio range and the specific values ​​of the corresponding water replenishment rate can be set according to the different historical operating parameters of different slag removers.

[0116] Specifically, the water replenishment speed is dynamically set according to the ratio of the cumulative loss of cold slag water c to the number of monitoring cycles n' to avoid the problem of rapid rise of water level in the slag remover and increased overflow risk due to large-scale water replenishment in a short period of time.

[0117] In a preferred embodiment of the present application, when generating the cold slag water evaluation value of the current feedback time node, it includes:

[0118] Generate scaling reference values ​​between adjacent monitoring points at the current feedback time node in sequence;

[0119] ;

[0120] Among them, n1 is the number of monitoring cycles between the time node of the last secondary water replenishment plan and the current feedback time node; Qe is the scaling reference value between the e+1th and eth monitoring points at the current feedback time node; fei is the impurity content difference between the e+1th and eth monitoring points corresponding to the i-th feedback time node after the last secondary water replenishment plan is executed; t is the time interval between the time node of the last secondary water replenishment plan and the current feedback time node;

[0121] Generate the cold slag water evaluation value g at the current feedback time node;

[0122] ;

[0123] Among them, Qi is the scaling reference value between the i+1th and ith monitoring points at the current feedback time node; βi is the influencing factor of Qi.

[0124] Specifically, the value range of the influencing factor is [0.8, 1.2]. The scaling probability between each monitoring point is generated according to the historical monitoring parameters of the pipeline, and the average value of the scaling probability is generated. The greater the structural probability between two adjacent monitoring points, the greater the corresponding influencing factor. The specific value relationship can be set according to the actual production parameters. If the scaling probability is less than the average value, the impact factor value is less than 1. If the scaling probability is greater than the average value, the impact factor value is greater than 1.

[0125] Specifically, by establishing the impurity content difference series F, the change of the impurity content of the cold slag water between two adjacent monitoring points is judged. If the difference is large, it means that there are more impurities in the pipeline between the two adjacent monitoring points, and the probability of scaling is also greater.

[0126] Specifically, by establishing a scaling evaluation value model, the scaling risk of the pipeline between each adjacent monitoring point is periodically corrected, so that the scaling evaluation value can more accurately reflect the scaling risk in the pipeline.

[0127] Specifically, when determining whether to generate a secondary water replenishment plan, it includes:

[0128] Preset the first cold slag water evaluation value threshold G ';

[0129] If g ≥ G', a secondary water replenishment instruction is generated at the current feedback time node;

[0130] Set the dosage j and dosage speed according to the secondary water replenishment instruction and the cold slag water evaluation value g;

[0131] Generate a secondary water replenishment plan based on the dosage j and the dosage speed.

[0132] Specifically, when setting the dosage j, it includes:

[0133] Preset the first slag cooling water evaluation value interval (G1, G2), the second slag cooling water evaluation value interval (G2, G3) and the third slag cooling water evaluation value interval (G3, G4);

[0134] If the cold slag water evaluation value g is in the preset first cold slag water evaluation value interval, the dosage j is set to the preset first dosage J1, ie j = J1;

[0135] If the cold slag water evaluation value g is in the preset second cold slag water evaluation value interval, the dosage j is set to the preset second dosage J2, ie j = J2;

[0136] If the cold slag water evaluation value g is within the preset third cold slag water evaluation value interval, the dosage j is set to the preset third dosage J3, that is, j=J3, and J1 <J2<J3。

[0137] Specifically, the first cold slag water evaluation value threshold can be set according to the historical monitoring parameters of the pipeline. The threshold means that the cold slag water in the current pipeline will greatly increase the scaling probability of the pipeline. If it is lower than the threshold, it means that the impurities in the cold slag water in the current pipeline are within a safe range.

[0138] Specifically, according to the historical descaling and dosing parameters of the slag remover system, the larger the cold slag water evaluation value, the more impurities there are, the greater the possibility of scaling problems in the pipeline, and the corresponding dosing amount should be more. A fitting function between the cold slag water evaluation value and the dosing amount is established to set the corresponding cold slag water evaluation value interval and the corresponding dosing amount. Gradient regulation is thus achieved.

[0139] Specifically, by generating the cold slag water evaluation value, the return water pipeline is fully monitored, and the corresponding dosing amount and dosing speed are dynamically set according to the cold slag water evaluation value, thereby eliminating the scaling risk of the return water pipeline and ensuring the safe operation of the slag removal system.

[0140] According to the first concept of the present application, by establishing multiple monitoring cycles, the cold slag water in the slag remover is periodically monitored, and the corresponding first-level water replenishment plan is set according to the cumulative loss of cold slag water at the preset feedback time node, so that the water amount of cold slag water in the slag remover is in a reasonable range, thereby ensuring the cooling effect on the slag and improving the overall slag removal efficiency.

[0141] According to the second concept of the present application, by adding a monitoring unit, the return pipe is monitored in different areas, and the scale probability of each monitoring point is obtained based on the collected water quality parameters, and a secondary water replenishment plan is set to dynamically adjust the dosage to avoid scale problems in the return pipe.

[0142] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present application. These improvements and substitutions should also be regarded as the scope of protection of the present application.

Claims

1. An automatic water replenishment control system for slag removal, characterized in that: include: The monitoring unit establishes multiple monitoring points according to the circulation path of the cold slag water; The monitoring unit further comprises a plurality of monitoring submodules, wherein the monitoring submodules are used to collect cold slag water parameters at each monitoring point; The central control unit is used to generate cold slag water loss parameters according to the boiler operation parameters, and determine whether to generate a first-level water replenishment plan according to the cold slag water loss parameters; The central control unit is also used to generate a cold slag water evaluation value according to the water quality parameters of the cold slag water at each monitoring point, and set a secondary water replenishment plan according to the cold slag water evaluation value; A water replenishment unit, wherein the central control unit sets working parameters of the water replenishment unit according to the primary water replenishment plan and the secondary water replenishment plan; The central control unit comprises: A first processing module is used to set a plurality of feedback time nodes and establish a plurality of monitoring cycles according to the feedback time nodes; The second processing module is used to obtain slag parameters and generate the cumulative cold slag water loss at each feedback time node according to a preset slag-cold slag water loss model; The second processing module is also used to determine whether to generate a first-level water replenishment plan according to the cumulative loss of cold slag water; The third processing module is used to establish a monitoring point sequence H according to the position parameters of each monitoring point, H = (h1, h2...hi...hm), where m is the number of monitoring points, and hi is the i-th monitoring point that the cold slag water passes after flowing out of the overflow pool; The fourth processing module obtains the water quality parameters of each monitoring point at the current feedback time node, and establishes the impurity content difference series F at the current feedback time node, F= (f1, f2…f i …f m-1 ), where fi is the impurity content difference between the i+1th monitoring point and the ith monitoring point at the current feedback time node; The fifth processing module is used to generate a cold slag water evaluation value at the current feedback time node, and determine whether to generate a secondary water replenishment plan based on the cold slag water evaluation value at the current feedback time node.

2. The automatic water replenishment control system for slag removal according to claim 1, characterized in that: The water replenishment unit comprises: The first water replenishment module is arranged at the water inlet of the slag scooping machine, and the central control unit sets the working parameters of the first water replenishment module according to the first-level water replenishment plan; The second water replenishment module is arranged at the outlet of the overflow pool, and the central control unit sets the working parameters of the second water replenishment module according to the secondary water replenishment plan.

3. The automatic water replenishment control system for slag removal according to claim 2, characterized in that: The generation of the accumulated cold slag water loss at each feedback time node includes: Obtain the slag discharge parameters within the monitoring period corresponding to the current feedback time node; Generate average slag temperature and slag discharge amount according to slag discharge parameters; According to the average slag temperature, slag discharge and slag-cold slag water loss model, the cold slag water evaporation amount a1, cold slag water overflow amount a2 and cold slag water system loss amount a3 within the monitoring period are generated; Get the cold slag water return flow a4 within the monitoring period corresponding to the current feedback time node; Generate the cold slag water loss b within the monitoring period; ; Establish a cold slag water loss series B, B=(b1, b2…bi…bn), where n is the number of monitoring cycles between the current feedback time node and the previous water replenishment time node, bi is the cold slag water loss in the monitoring cycle corresponding to the i-th feedback time node after the previous water replenishment time node; bn is the cold slag water loss in the monitoring cycle corresponding to the current feedback time node; Generate the accumulated loss of cold slag water c at the current feedback time node; 。 4. The automatic water replenishment control system for slag removal according to claim 3, characterized in that: The determination of whether to generate a first-level water replenishment plan includes: Preset the first cold slag water loss threshold C1; If the accumulated cold slag water loss at the current feedback time node c≥C1, a first-level water replenishment instruction is generated; According to the first-level water replenishment instruction, the number of monitoring cycles n' between the current feedback time node and the previous water replenishment time node is obtained; The water replenishment speed v is set according to the ratio d of the cumulative loss of cold slag water c and the number of monitoring cycles n'; A first-level water replenishment plan is generated based on the cumulative cold slag water loss c and the water replenishment speed v.

5. The automatic water replenishment control system for slag removal according to claim 4, characterized in that: The setting of the water replenishment speed v includes: Preset a first ratio interval (D1, D2), a second ratio interval (D2, D3) and a third ratio interval (D3, D4); If the ratio d is within the preset first ratio interval, the water replenishment speed v is set to the first water replenishment speed V1, ie v=V1; If the ratio d is within the preset second ratio interval, the water replenishment speed v is set to the second water replenishment speed V2, ie v=V2; If the ratio d is within the preset third ratio interval, the water replenishment speed v is set to the third water replenishment speed V3, that is, v=V3, and V1 <V2<V3。 6. The automatic water replenishment control system for slag removal according to claim 2, characterized in that: The generating of the cold slag water evaluation value at the current feedback time node includes: Generate scaling reference values ​​between adjacent monitoring points at the current feedback time node in sequence; ； Among them, n1 is the number of monitoring cycles between the time node of the last secondary water replenishment plan and the current feedback time node; Qe is the scaling reference value between the e+1th and eth monitoring points at the current feedback time node; fei is the impurity content difference between the e+1th and eth monitoring points corresponding to the i-th feedback time node after the last secondary water replenishment plan is executed; t is the time interval between the time node of the last secondary water replenishment plan and the current feedback time node; Generate the cold slag water evaluation value g at the current feedback time node; ; Among them, Qi is the scaling reference value between the i+1th and ith monitoring points at the current feedback time node; βi is the influencing factor of Qi.

7. The automatic water replenishment control system for slag removal according to claim 6, characterized in that: The determination of whether to generate a secondary water replenishment plan includes: Preset the first cold slag water evaluation value threshold G '; If g ≥ G', a secondary water replenishment instruction is generated at the current feedback time node; Set the dosage j and dosage speed according to the secondary water replenishment instruction and the cold slag water evaluation value g; Generate a secondary water replenishment plan based on the dosage j and the dosage speed.

8. The automatic water replenishment control system for slag removal according to claim 7, characterized in that: When setting the dosage j, include: Preset the first slag cooling water evaluation value interval (G1, G2), the second slag cooling water evaluation value interval (G2, G3) and the third slag cooling water evaluation value interval (G3, G4); If the cold slag water evaluation value g is in the preset first cold slag water evaluation value interval, the dosage j is set to the preset first dosage J1, ie j = J1; If the cold slag water evaluation value g is in the preset second cold slag water evaluation value interval, the dosage j is set to the preset second dosage J2, ie j = J2; If the cold slag water evaluation value g is within the preset third cold slag water evaluation value interval, the dosage j is set to the preset third dosage J3, that is, j=J3, and J1 <J2<J3。

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