Intelligent operation system, method and equipment for dry-type deslagging equipment of thermal power plant and medium

Abstract

The invention discloses an intelligent operation system, method, equipment and medium for dry-type slag discharging equipment of a thermal power plant, a plurality of hydraulic shutoff doors are arranged at an opening in the bottom of a dry bottom hopper, the hydraulic shutoff doors are communicated with a slag extrusion hydraulic oil station, and an outlet in the bottom of the dry bottom hopper is communicated with the tail of a dry-type slag discharging machine. A driving roller is arranged in a machine head of the dry-type slag extractor, a driven roller is arranged in a machine tail of the dry-type slag extractor, the machine head and the machine tail of the dry-type slag extractor are communicated through a machine shell, one end of a chain belt is connected to the driving roller in a sleeved mode, the other end of the chain belt is connected to the driven roller in a sleeved mode, and a plurality of chain plates are arranged on the chain belt. The middle of the chain belt is located in the machine shell, a slag crushing gear set is arranged in a machine head of the dry type slag extractor and located below the driving roller, the system, the method, the equipment and the medium can adjust the rotating speed of the chain belt in a self-contained mode, and unattended operation of the slag discharging system is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy conservation and efficiency improvement of thermal power units, and relates to an intelligent operation system, method, equipment and medium for dry slag discharge equipment in a thermal power plant. Background Art

[0002] The dry slag discharger (chain belt slag conveyor) is installed directly below the hydraulic crusher (furnace bottom slag discharge device) at the bottom of the boiler slag hopper. It is a key equipment of the dry slag discharge system. It uses the chain plate as a traction component and also as a load-bearing component to realize the collection and transportation of ash. When working, the drive device drives the drive sprocket to rotate, and drives the chain plate to run through the engagement between the sprocket and the chain. The ash that falls from the boiler cold ash hopper onto the chain plate moves with the chain plate, and the structure of the chain belt can absorb the impact force generated by the fall of ash. The chain belt slag conveyor consists of a head power section, a standard section (rising section and horizontal section), a transition section, a tail tensioning section and an electrical and control system. The actual dry slag discharger is shown below Figure 1 As shown. The high-temperature slag falling from the furnace of the boiler first falls on the crossbeam of the hydraulic crusher. There are multiple crossbeams, which are arranged at equal intervals, like a grid. Small slag blocks can pass through the grid gaps and reach the chain belt. The larger slag blocks (>200mm) are blocked by the grid. The hydraulic crusher is started to squeeze the large slag into small slag blocks, and then the small slag blocks fall on the chain belt and are transported to the slag crusher. After being crushed, they enter the slag bin.

[0003] At present, most dry slag dischargers use 2-3 sections to set instructions according to the unit load. The higher the load, the higher the speed of the chain belt used to transport the slag blocks. The current problem is: when the unit has an abnormal operating condition, a large amount of slag will fall from the furnace within a certain period of time. The dry slag discharger should increase the speed and increase the output. However, since the output instruction is related to the unit load, and the unit load may not change during abnormal conditions, the output of the dry slag discharger will not automatically increase. This causes a large amount of slag blocks to fall on the slag discharger chain belt in a short period of time, resulting in the chain belt being unable to transport in time, thereby accumulating slag on the crossbeam of the hydraulic crusher, and even the slag on the chain belt is too heavy, which directly causes the motor driving the chain belt to trip, and the entire slag discharge system to stop operating, which has a serious impact on the safe operation of the power plant boiler.

[0004] Developing an intelligent operation and control system that can independently judge the current working conditions, independently adjust the chain belt speed and thus change the output of the slag discharge equipment, and realize unmanned operation of the slag discharge system is of great significance for reducing staff and increasing efficiency in power plants and improving equipment reliability. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a smart operation system, method, equipment and medium for dry slag discharge equipment in a thermal power plant. The system, method, equipment and medium can automatically adjust the chain belt speed to realize unmanned operation of the slag discharge system.

[0006] To achieve the above-mentioned purpose, the present invention discloses an intelligent operation system for dry slag discharge equipment in a thermal power plant, including a cold ash hopper, a slag extrusion hydraulic oil station, a dry slag discharge machine, a chain belt, a chain belt motor, a hydraulic tensioning oil station and a slag crusher motor;

[0007] A plurality of hydraulic shut-off doors are provided at the bottom opening of the cold ash hopper, and the hydraulic shut-off doors are connected to the slag squeezing hydraulic oil station. The bottom outlet of the cold ash hopper is connected to the tail of the dry slag discharger. A driving roller is provided in the head of the dry slag discharger, and a driven roller is provided in the tail of the dry slag discharger. The head and tail of the dry slag discharger are connected through a casing. One end of the chain belt is sleeved on the driving roller, and the other end of the chain belt is sleeved on the driven roller. A plurality of chain plates are provided on the chain belt, and the middle part of the chain belt is located in the casing. A slag crushing gear set is provided in the head of the dry slag discharger, wherein the slag crushing gear set is located below the driving roller.

[0008] The output shaft of the chain belt motor is connected with the driving roller, the hydraulic tensioning oil station is connected with the driving roller via the tensioning device, and the slag crusher motor is connected with the slag crushing gear set.

[0009] Furthermore, it also includes a slag bin, and the bottom outlet of the head of the dry slag discharger is connected to the slag bin.

[0010] Furthermore, it also includes a control center, which is connected to the slag squeezing hydraulic oil station, the chain belt motor, the hydraulic tensioning oil station and the slag crusher motor.

[0011] Furthermore, the slag bin is a cylindrical container.

[0012] Furthermore, the slag crusher motor is a variable frequency motor.

[0013] Furthermore, an oil pressure sensor is provided in the hydraulic tensioning oil station.

[0014] The present invention discloses a smart operation method for dry slag discharge equipment in a thermal power plant, which is based on a smart operation system for dry slag discharge equipment in a thermal power plant and comprises the following steps:

[0015] Under stable conditions, the amount of boiler slag is positively correlated with the amount of coal fed into the furnace. According to the actual operation data of the unit, the actual amount of coal fed into the furnace under full load is obtained: rated , and then according to the actual amount of coal fed into the boiler at full load M rated Generate a frequency conversion instruction for the chain belt motor, and control the chain belt motor according to the frequency conversion instruction for the chain belt motor;

[0016] When the tensioning force of the tensioning device fluctuates frequently and cannot reach a stable state, the actual amount of coal fed into the boiler under full load M ratedGenerate a frequency conversion command for the chain belt motor, then increase a preset frequency based on the frequency conversion command for the chain belt motor, and then use it to control the chain belt motor;

[0017] When receiving the ACG instruction from the power grid, the amount of coal fed into the furnace is increased to X×M rated When the frequency conversion value Z of the chain belt motor is calculated, the frequency conversion value Z is then sent to the chain belt motor to adjust the speed of the chain belt motor;

[0018] When the unit load rejection occurs, the hydraulic shut-off door is closed, and the speed of the chain belt motor is controlled to 50.0Hz. Then, after the preset time, the hydraulic shut-off door is opened, and the speed of the chain belt motor is maintained at 50.0Hz to transport the slag after the shutdown.

[0019] When the boiler is extinguished, the hydraulic shut-off door is closed and the speed of the chain belt motor is controlled to 50.0 Hz. After a preset time, the hydraulic shut-off door is opened and the chain belt motor is kept at a speed of 50.0 Hz to transport the slag after the shutdown.

[0020] Furthermore, it also includes:

[0021] The chain belt motor and the slag crusher motor are interlocked and controlled.

[0022] The present invention discloses a computer device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the intelligent operation method of the dry slag discharge equipment of a thermal power plant are implemented.

[0023] The present invention discloses a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the intelligent operation method of the dry slag discharge equipment of a thermal power plant are realized.

[0024] The present invention has the following beneficial effects:

[0025] The intelligent operation system, method, equipment and medium of the dry slag discharge equipment of a thermal power plant described in the present invention are based on the positive correlation between the amount of boiler slag and the amount of coal burned in the furnace. According to the actual situation of each working condition, the chain belt speed is automatically adjusted by controlling the chain belt motor and the hydraulic shut-off door, thereby realizing unmanned operation of the slag discharge system, with a high degree of automation and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a structural diagram of the prior art;

[0028] Figure 2 It is a structural diagram of the present invention.

[0029] Among them, 1 is the cold ash hopper, 2 is the tail, 3 is the head, 4 is the casing, 5 is the slag squeezing hydraulic oil station, 6 is the chain belt motor, 7 is the hydraulic tensioning oil station, 8 is the slag crusher motor, 9 is the slag bin, 10 is the control center, 51 is the hydraulic shut-off door, 61 is the chain belt, 62 is the chain plate, 63 is the driving roller, 64 is the driven roller, 71 is the tensioning device, and 81 is the slag crushing gear set. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0032] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0033] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0034] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0035] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0038] Embodiment 1

[0039] refer to Figure 2 The intelligent operation system of dry slag discharge equipment of a thermal power plant of the present invention comprises a cold ash hopper 1, a slag squeezing hydraulic oil station 5, a chain belt 61, a slag bin 9, a chain belt motor 6, a hydraulic tensioning oil station 7, a slag crusher motor 8 and a control center 10;

[0040] A plurality of hydraulic shut-off doors 51 are provided at the bottom opening of the cold ash hopper 1, and the hydraulic shut-off doors 51 are connected to the slag squeezing hydraulic oil station 5. The bottom outlet of the cold ash hopper 1 is connected to the tail 2 of the dry slag discharger. A driving roller 63 is provided in the head 3 of the dry slag discharger, and a driven roller 64 is provided in the tail 2 of the dry slag discharger. The head 3 and the tail 2 of the dry slag discharger are connected through the casing 4. One end of the chain belt 61 is sleeved on the driving roller 63, and the other end of the chain belt 61 is sleeved on the driven roller 64. A plurality of chain plates 62 are provided on the chain belt 61, and the middle part of the chain belt 61 is located in the casing 4. A slag crushing gear set 81 is provided in the head 3 of the dry slag discharger, wherein the slag crushing gear set 81 is located below the driving roller 63. The bottom outlet of the head 3 of the dry slag discharger is connected to the slag bin 9.

[0041] The output shaft of the chain belt motor 6 is connected to the driving roller 63 , the hydraulic tensioning oil station 7 is connected to the driving roller 63 via the tensioning device 71 , and the slag crusher motor 8 is connected to the slag crushing gear set 81 .

[0042] The control center 10 is connected with the slag squeezing hydraulic oil station 5 , the chain belt motor 6 , the hydraulic tensioning oil station 7 and the slag crusher motor 8 .

[0043] As an embodiment of the present invention, the cold ash hopper 1 is located at the lower part of the boiler furnace and is in the shape of a four-sided cone. The high-temperature ash formed by the combustion of coal in the furnace falls into the cold ash hopper 1 for cooling.

[0044] As an embodiment of the present invention, under the command control of the control center 10, the slag squeezing hydraulic oil station 5 provides power to push the hydraulic shut-off door 51 to close or open, thereby squeezing and crushing the large slag; when the boiler is suddenly extinguished under high load, the ash on the heating surface of the furnace will fall quickly. If the hydraulic shut-off door 51 is not closed, a large amount of slag will fall on the chain belt 61 in a short period of time, causing the chain belt 61 to fail to transport the slag in time and be overloaded by heavy pressure, eventually causing the chain belt motor 6 to trip. Therefore, the hydraulic shut-off door 51 should be closed in time under such working conditions.

[0045] As an embodiment of the present invention, the chain belt 61 is made of high temperature resistant metal material.

[0046] As an embodiment of the present invention, the slag bin 9 is a cylindrical container for storing ash. It should be noted that the slag crusher motor 8 is a variable frequency motor that can change the speed to adapt to the slag input amount delivered by the chain belt 61 and changes with the boiler load.

[0047] As an embodiment of the present invention, an oil pressure sensor is provided in the hydraulic tensioning oil station 7, which can display the oil pressure value currently used for tensioning the belt, and the value can be used to indirectly determine whether the current rotation speed of the chain belt 61 matches the current slag amount.

[0048] As an implementation mode of the present invention, all hydraulic oil stations, motors, etc. are connected to the control center 10 via cables, and the adjustment of their operating states is completely under the control of the control center 10 .

[0049] As an embodiment of the present invention, the control center 10 is a high-performance server with built-in data receiving, display, and calculation modules, and a "unit abnormal operating condition" analysis model is built to output control instructions for each device.

[0050] Embodiment 2

[0051] refer to Figure 2 The intelligent operation method of the dry slag discharge equipment of a thermal power plant according to the present invention comprises the following steps:

[0052] A speed control instruction for the chain belt motor 6 is established, and the speed control instruction includes a basic instruction, a tension force fluctuation correction instruction, an AGC prediction correction instruction and an abnormal working condition correction instruction.

[0053] After receiving the basic instruction, under stable working conditions, the amount of boiler slag is positively correlated with the amount of coal entering the furnace for combustion. Therefore, a basic speed control instruction for the chain belt motor 6 is generated according to the current amount of coal. The chain belt motor 6 is frequency-controlled according to the basic speed control instruction for the chain belt motor 6. The control range of the basic speed control instruction for the chain belt motor 6 is 10.0-50.0Hz. According to the actual operation data of the unit, the actual amount of coal entering the furnace M under full load of the boiler is obtained. rated , and then match according to Table 1 to obtain the frequency conversion instruction of the chain belt motor 6. It can be seen from Table 1 that the matching relationship is a linear relationship.

[0054] Table 1

[0055]

[0056] Table 1 is set by human experience. The actual operation of the boiler adjusts the rotation speed according to Table 1. It is inevitable that the slag volume and the rotation speed of the chain belt 61 do not match. In order to eliminate this problem, the first level of correction - tension fluctuation correction is introduced.

[0057] Correction of tension force fluctuation: According to the correspondence between the amount of coal fed into the furnace and the motor frequency conversion instruction in Table 1, when the tension force of the tensioning device 71 fluctuates frequently and cannot reach a stable state, it indicates that the current load on the chain belt 61 is increased, which causes the deformation of the chain belt 61 to increase, causing the tension force to fluctuate frequently. At this time, the control center 10 increases 5.0Hz based on the motor frequency conversion instruction obtained according to Table 1 to improve the slag conveying capacity of the chain belt 61.

[0058] The criterion for tensioning force fluctuation is: if the oil pressure of the tensioning device 71 has a value change rate of >1.0MPa / min for 30 consecutive seconds within 60 seconds, it is considered as tensioning force fluctuation, triggering the first level correction of adding 5.0Hz.

[0059] AGC Pre-judgment Correction: Thermal power units realize the Automatic Generation Control (AGC) function through a coordinated control system. The instructions from the grid dispatch are sent to the units through the AGC system and become the output requirements of the units at future times.

[0060] The control center 10 synchronously reads the AGC instructions from the power grid from the power plant distributed control system to learn in advance the changes in the unit's future output (i.e., the amount of coal fed into the boiler). When the AGC instruction is to increase the unit load, that is, to increase the amount of coal fed into the boiler to X×M rated (where 0≤X≤1), then use formula (1) to calculate the variable frequency value Z of the chain belt motor 6 under the command load:

[0061] Z=X÷0.1×5(unit: Hz)(1)

[0062] The control center 10 receives the AGC instruction, calculates the frequency conversion value Z, and then sends the frequency conversion value Z to the chain belt motor 6 to increase the rotation speed of the chain belt motor 6 in advance, effectively avoiding the situation where the slag amount increases and the slag cannot be transported in time.

[0063] The situation of reducing the load of the unit is different from the aforementioned load increase. Because the load reduction process will cause the furnace temperature to drop, the ash and the metal tubes on the heating surface have different thermal expansion and contraction properties, so the amount of slag will increase in a short time. Therefore, the chain motor 6 should maintain a certain speed to cope with this actual characteristic. The specific process is: after the control center 10 receives the AGC command to reduce the unit load, the current frequency conversion command of the chain motor 6 is kept unchanged. When the tension fluctuates, the tension fluctuation correction command is triggered. When the current actual load of the unit is reduced to the load required by the AGC command, the timing starts for 10 minutes. After the timing ends, the frequency conversion value Z is calculated according to formula (1) and sent to the chain motor 6, reducing the speed of the chain motor 6 to match the current amount of coal entering the furnace.

[0064] Abnormal operating condition correction instructions:

[0065] The abnormal operating condition of the unit refers to the situation where the unit output changes significantly, causing a large amount of ash and slag in the furnace to fall off, causing a heavy load on the slag removal system in a short period of time. For thermal power units, the main abnormal operating conditions are as follows:

[0066] a) Coal mill RB (Run Back, load reduction due to auxiliary machine failure): When multiple coal mills equipped in a thermal power unit are in operation, one or two coal mills suddenly trip, causing a sharp drop in the amount of coal entering the boiler and a significant drop in the furnace temperature, which will eventually cause large-scale and rapid shedding of ash on the heating surface.

[0067] b) Other equipment RB (Run Back, load reduction due to auxiliary equipment failure): When the thermal power unit is equipped with two sets of equipment such as the forced draft fan, induced draft fan, primary fan, air preheater, and feed water pump, and both devices are running under a higher load, if one of them suddenly trips, the unit will also experience a rapid load reduction, the amount of coal entering the boiler will decrease rapidly, and the furnace temperature will drop significantly, which will eventually cause large-scale and rapid shedding of ash on the heating surface.

[0068] c) Unit load shedding. Unit load shedding refers to the phenomenon that the steam turbine generator set suddenly removes all or part of its load, which is usually caused by a reduction in the power load of the end user, a failure of a large power-consuming device, or a power outage due to a large area of ​​line failure. When the power plant generates more electricity than it delivers to the user, or because the outlet circuit breaker of the power grid suddenly trips, the load on the steam turbine generator will suddenly drop to almost zero.

[0069] The control center 10 receives the current load value of the unit in real time and calculates the load change rate of the unit. When the load change rate is greater than 5% of the rated output (unit MW) / min, it is determined that the unit has suffered load shedding, and the control center 10 closes the hydraulic shut-off door 51 to prevent slag from entering the chain belt 61. At the same time, the control center 10 controls the speed of the chain belt motor 6 to 50.0 Hz. After timing for 5 minutes, the control center 10 opens the hydraulic shut-off door 51. Since the hydraulic shut-off door 51 usually consists of dozens of hydraulic shut-off doors 51, a pair of hydraulic shut-off doors 51 are opened at intervals of 5 minutes, and finally all the hydraulic shut-off doors 51 are opened. The chain belt motor 6 maintains a speed of 50.0 Hz to transport away a large amount of slag after shutdown.

[0070] d) Boiler fire extinguishing (Main Fuel Trip, MFT). When the control center 10 receives the MFT signal from the distributed control system of the unit, it determines that the boiler fire has occurred, and the control center 10 closes the hydraulic shut-off door 51 to prevent the slag from entering the chain belt 61. At the same time, the control center 10 controls the speed of the chain belt motor 6 to 50.0 Hz. After 5 minutes of timing, the control center 10 opens the hydraulic shut-off door 51, and the chain belt motor 6 maintains a speed of 50.0 Hz to transport the slag after the shutdown.

[0071] It should be noted that the control center 10 controls the chain belt motor 6 while controlling the slag crusher motor 8, wherein the corresponding relationship between the frequency conversion instructions of the chain belt motor 6 and the slag crusher motor 8 is shown in Table 2.

[0072] Table 2

[0073]

[0074]

[0075] By timely and accurately judging the current operating conditions of the unit, the dry slag discharge system can realize the function of autonomously adjusting the speed of the chain belt 61 and the speed of the slag crusher, and has the "adaptive cruise" capability to automatically match the operating conditions of the unit, which is of great significance for the power generation equipment to achieve "unmanned and intelligent operation".

[0076] Embodiment 3

[0077] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the intelligent operation method of the dry slag discharge equipment of a thermal power plant are implemented. The memory may include a memory, such as a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk memory, etc. The processor, the network interface, and the memory are interconnected through an internal bus. The internal bus may be an industrial standard architecture bus, a peripheral component interconnection standard bus, an extended industrial standard architecture bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory is used to store programs. Specifically, the program may include a program code, and the program code includes computer operation instructions. The memory may include a memory and a non-volatile memory, and provide instructions and data to the processor.

[0078] Embodiment 4

[0079] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the intelligent operation method of the dry slag discharge equipment of a thermal power plant are implemented, and the volatile memory may include a random access memory (RAM) and / or a cache memory (cache), etc. The non-volatile memory may include a read-only memory (ROM), a hard disk, a flash memory, an optical disk, a magnetic disk, etc.

[0080] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0081] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0082] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0083] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0084] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0085] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0086] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An intelligent operation system for dry slag discharge equipment in a thermal power plant, characterized in that: It comprises a cold ash hopper (1), a slag squeezing hydraulic oil station (5), a dry slag discharger, a chain belt (61), a chain belt motor (6), a hydraulic tensioning oil station (7) and a slag crusher motor (8); A plurality of hydraulic shut-off doors (51) are provided at the bottom opening of the cold ash hopper (1), and the hydraulic shut-off doors (51) are connected to the slag extrusion hydraulic oil station (5). The bottom outlet of the cold ash hopper (1) is connected to the tail (2) of the dry slag discharger. A driving roller (63) is provided in the head (3) of the dry slag discharger, and a driven roller (64) is provided in the tail (2) of the dry slag discharger. The two rollers (64) and the two rollers (65) are connected to each other through a casing (4); one end of a chain belt (61) is sleeved on the driving roller (63); the other end of the chain belt (61) is sleeved on the driven roller (64); a plurality of chain plates (62) are provided on the chain belt (61); the middle portion of the chain belt (61) is located in the casing (4); a slag crushing gear set (81) is provided in the head (3) of the dry slag discharger; wherein the slag crushing gear set (81) is located below the driving roller (63); The output shaft of the chain belt motor (6) is connected to the driving roller (63), the hydraulic tensioning oil station (7) is connected to the driving roller (63) via the tensioning device (71), and the slag crusher motor (8) is connected to the slag crushing gear set (81).

2. The intelligent operation system of dry slag discharge equipment in a thermal power plant according to claim 1, characterized in that: It also comprises a slag bin (9), and the bottom outlet of the head (3) of the dry slag discharger is connected to the slag bin (9).

3. The intelligent operation system of dry slag discharge equipment in a thermal power plant according to claim 1, characterized in that: It also includes a control center (10), which is connected to a slag squeezing hydraulic oil station (5), a chain belt motor (6), a hydraulic tensioning oil station (7) and a slag crusher motor (8).

4. The intelligent operation system of dry slag discharge equipment in a thermal power plant according to claim 1, characterized in that: The slag bin (9) is a cylindrical container.

5. The intelligent operation system of dry slag discharge equipment in thermal power plants according to claim 1, characterized in that: The slag crusher motor (8) is a variable frequency motor.

6. The intelligent operation system of dry slag discharge equipment in a thermal power plant according to claim 1, characterized in that: An oil pressure sensor is arranged in the hydraulic tensioning oil station (7).

7. A method for intelligent operation of dry slag discharge equipment in a thermal power plant, characterized in that: Based on the intelligent operation system of dry slag discharge equipment in thermal power plants, the following steps are included: Under stable conditions, the amount of boiler slag is positively correlated with the amount of coal fed into the furnace. According to the actual operation data of the unit, the actual amount of coal fed into the furnace under full load is obtained: rated , and then according to the actual amount of coal fed into the boiler at full load M rated Generate a frequency conversion instruction for the chain belt motor (6), and control the chain belt motor (6) according to the frequency conversion instruction for the chain belt motor (6); When the tensioning force of the tensioning device (71) fluctuates frequently and cannot reach a stable state, the actual amount of coal fed into the boiler under full load M rated Generate a frequency conversion instruction for the chain belt motor (6), then increase a preset frequency based on the frequency conversion instruction for the chain belt motor (6), and then use this to control the chain belt motor (6); When receiving the ACG instruction from the power grid, the amount of coal fed into the furnace is increased to X×M rated When the frequency conversion value Z of the chain belt motor (6) is calculated, the frequency conversion value Z is then sent to the chain belt motor (6) to adjust the rotation speed of the chain belt motor (6); When the unit load rejection occurs, the hydraulic shutoff door (51) is closed, and the rotation speed of the chain belt motor (6) is controlled to 50.0 Hz. Then, after a preset time, the hydraulic shutoff door (51) is opened, and the rotation speed of the chain belt motor (6) is maintained at 50.0 Hz to transport the slag after the shutdown. When the boiler is extinguished, the hydraulic shutoff door (51) is closed and the rotation speed of the chain belt motor (6) is controlled to 50.0 Hz. After a preset time, the hydraulic shutoff door (51) is opened and the chain belt motor (6) is kept at a rotation speed of 50.0 Hz to transport the slag after the shutdown.

8. The intelligent operation method of dry slag discharge equipment in a thermal power plant according to claim 7, characterized in that: Also includes: The chain belt motor (6) and the slag crusher motor (8) are interlocked and controlled.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the intelligent operation method of dry slag discharge equipment in a thermal power plant as described in claim 7 or 8 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by the processor, the steps of the intelligent operation method of dry slag discharge equipment in a thermal power plant as described in claim 7 or 8 are implemented.

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