Control method, device and equipment for preventing ash conveying system of thermal power plant from being blocked

Abstract

The invention provides a control method, device and equipment for preventing a thermal power plant ash conveying system from being blocked, the ash conveying system comprises an ash conveying hopper, an ash conveying bin pump and an ash conveying pipeline, an air cannon and a material level detector are arranged in the ash conveying hopper, and a heater, a humidity detector and a viscosity detector are arranged in the ash conveying bin pump; a pressure detector and a flow detector are arranged in the ash conveying pipeline, and a vibrator is arranged on the ash conveying pipeline; the control method comprises the steps that the ash material level, detected by a material level detector, in an ash conveying hopper, the humidity value and the viscosity value, detected by a humidity detector and a viscosity detector, of an ash material in an ash conveying bin pump, and the pressure value and the ash flow, detected by a pressure detector and a flow detector, of an ash conveying pipeline are obtained; judging whether abnormal values which do not meet respective corresponding preset conditions exist in the ash material level, the humidity value, the viscosity value, the pressure value and the ash flow rate or not; if yes, target equipment with the corresponding relation with the abnormal value in the air cannon, the heater and the vibrator is determined; and target equipment is controlled, and the ash conveying system is dredged.

Description

Technical Field

[0001] The invention relates to the technical field of thermal power plants, and in particular to a control method, a device and equipment for preventing a ash conveying system of a thermal power plant from being blocked. Background Art

[0002] At present, thermal power generation is one of the main ways of generating electricity. When controlling dust in flue gas, thermal power plants often choose to use electrostatic precipitators in combination with pneumatic ash conveying systems. Pneumatic ash conveying uses compressed air to pneumatically convey the ash conveying silo pump at the bottom of the electrostatic precipitator. However, the pipelines and silo pumps of the pneumatic ash conveying system are prone to ash blockage.

[0003] When the pneumatic ash conveying system is blocked, the thermal power plant needs to add a lot of manpower to clear the blockage to ensure the stable operation of the ash conveying system, which greatly wastes human resources, is inefficient, and easily leads to personal safety accidents. Summary of the invention

[0004] The present invention provides a control method, device and equipment for preventing ash conveying system of a thermal power plant from being blocked, so as to solve the problem that the ash conveying system cannot be efficiently processed in the prior art.

[0005] On the one hand, the present invention provides a control method for preventing the ash conveying system of a thermal power plant from being blocked, wherein the ash conveying system comprises an ash conveying hopper, an ash conveying bin pump and an ash conveying pipeline, wherein an air cannon and a material level detector are arranged in the ash conveying hopper, a heater, a humidity detector and a viscosity detector are arranged in the ash conveying bin pump, a pressure detector and a flow detector are arranged in the ash conveying pipeline, and a rapper is arranged on the ash conveying pipeline, and the control method comprises:

[0006] Obtaining the ash material level in the ash conveying hopper detected by the material level detector, the humidity value and viscosity value of the ash material in the ash conveying silo pump detected by the humidity detector and the viscosity detector, and the pressure value and ash flow rate of the ash conveying pipeline detected by the pressure detector and the flow rate detector;

[0007] Determine whether there are abnormal values ​​in the ash material level, the humidity value, the viscosity value, the pressure value, and the ash flow rate that do not meet the corresponding preset conditions;

[0008] If so, determining a target device among the air cannon, the heater, and the rapper that has a corresponding relationship with the abnormal value;

[0009] Control the target equipment and dredge the ash conveying system.

[0010] According to a control method for preventing blockage of an ash conveying system in a thermal power plant provided by the present invention, the preset condition corresponding to the ash material level is lower than a preset material level;

[0011] The preset condition corresponding to the humidity value is lower than the preset humidity value;

[0012] The preset condition corresponding to the viscosity value is lower than the preset viscosity value;

[0013] The preset condition corresponding to the pressure value is lower than the preset pressure value;

[0014] The preset condition corresponding to the ash flow rate is greater than a preset flow rate.

[0015] According to a control method for preventing clogging of an ash conveying system of a thermal power plant provided by the present invention, a target device having a corresponding relationship with the abnormal value among the air cannon, the heater and the rapper is determined, comprising:

[0016] When the ash material level is an abnormal value, determining that the air cannon is a target device;

[0017] When the humidity value and / or the viscosity value is an abnormal value, determining that the heater is a target device;

[0018] When the pressure value and / or the ash flow rate are abnormal values, determining the rapper as a target device;

[0019] Controlling the target equipment and unblocking the ash conveying system includes:

[0020] When the air cannon is the target device, the air cannon is started to loosen the ash in the ash conveying hopper, and when the ash level is lower than the preset level, the air cannon is stopped;

[0021] When the heater is the target device, the heater is started to heat the ash in the ash conveying silo pump, and when the humidity value is lower than the preset humidity value and the viscosity value is lower than the preset viscosity value, the heater is stopped;

[0022] When the rapper is the target device, the rapper is started to loosen the ash in the ash conveying pipeline, and when the pressure value is lower than the preset pressure value and the ash flow rate is greater than the preset flow rate, the rapper is stopped.

[0023] According to a control method for preventing blockage of an ash conveying system in a thermal power plant provided by the present invention, the rapper is arranged in a bending area, a reducer area, a rusty area, an outlet area and an inlet area of ​​the ash conveying pipeline.

[0024] A control method for preventing ash conveying system of a thermal power plant from being blocked according to the present invention also includes:

[0025] Acquiring a knocking sound generated by knocking the ash conveying pipeline;

[0026] The knocking sound is compared with a pre-stored target sound produced by knocking the ash conveying pipeline in a non-rusted state to obtain a comparison result;

[0027] The rusted area is determined according to the comparison result.

[0028] According to a control method for preventing the ash conveying system of a thermal power plant from being blocked provided by the present invention, the knocking sound is compared with a pre-stored target sound generated by knocking when the ash conveying pipeline is not rusted, comprising:

[0029] comparing the similarity between the frequency spectrum characteristics and waveform characteristics of the striking sound and the frequency spectrum characteristics and waveform characteristics of the target sound;

[0030] Determining the rust zone according to the comparison result includes:

[0031] When the similarity between the frequency spectrum characteristics and waveform characteristics of the knocking sound and the frequency spectrum characteristics and waveform characteristics of the target sound is less than a preset similarity threshold, the knocked area is determined to be a rusty area.

[0032] According to a control method for preventing clogging of an ash conveying system of a thermal power plant provided by the present invention, before starting the rapper, the method further comprises:

[0033] Detecting whether the ash conveying system is in a fault state;

[0034] If not, executing the step of starting the rapper;

[0035] The fault state includes at least one of the following:

[0036] The valve of the ash conveying pipeline is opened less or closed;

[0037] The ash conveying pipeline is leaking.

[0038] According to a control method for preventing blockage of an ash conveying system of a thermal power plant provided by the present invention, the ash conveying system further includes a compressor and an air storage tank, and starting the air cannon includes:

[0039] Controlling the compressor to compress air to obtain compressed air;

[0040] The compressed air is stored in the gas storage tank, and when the pressure in the gas storage tank is equal to the preset gas storage pressure, the compressed air is stopped from being input into the gas storage tank; wherein a first pressure gauge is installed in the gas storage tank for real-time monitoring of the pressure in the gas storage tank;

[0041] Control the compressed air in the air storage tank to reach the air inlet of the air cannon through the air pipeline, and enter the gun body of the air cannon along the air inlet; wherein the gun body of the air cannon is provided with a second pressure gauge for detecting the pressure in the gun body;

[0042] When the pressure in the cannon body of the air cannon reaches a preset pressure threshold, the air cannon is controlled to release air.

[0043] On the other hand, the present invention also provides a control device for preventing the ash conveying system of a thermal power plant from being blocked, wherein the ash conveying system comprises an ash conveying hopper, an ash conveying bin pump and an ash conveying pipeline, wherein an air cannon and a material level detector are arranged in the ash conveying hopper, a heater, a humidity detector and a viscosity detector are arranged in the ash conveying bin pump, a pressure detector and a flow detector are arranged in the ash conveying pipeline, and a rapper is arranged on the ash conveying pipeline, wherein the control device comprises:

[0044] An information acquisition module, used to acquire the ash material level in the ash conveying hopper detected by the material level detector, the humidity value and viscosity value of the ash material in the ash conveying silo pump detected by the humidity detector and the viscosity detector, and the pressure value and ash flow rate of the ash conveying pipeline detected by the pressure detector and the flow rate detector;

[0045] An information judgment module, used to judge whether there are abnormal values ​​in the ash material level, the humidity value, the viscosity value, the pressure value and the ash flow rate that do not meet the corresponding preset conditions;

[0046] A target determination module, configured to, if yes, determine a target device among the air cannon, the heater and the rapper that has a corresponding relationship with the abnormal value;

[0047] A control module is used to control the target device and dredge the ash conveying system.

[0048] On the other hand, the present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, it implements any of the control methods described above for preventing blockage of an ash conveying system in a thermal power plant.

[0049] The control method, device and equipment provided by the present invention for preventing the ash conveying system of a thermal power plant from being blocked, by obtaining the ash material level in the ash conveying hopper detected by the material level detector, the humidity value and viscosity value of the ash material in the ash conveying bin pump detected by the humidity detector and the viscosity detector, and the pressure value and ash flow of the ash conveying pipeline detected by the pressure detector and the flow detector, to determine whether there are abnormal values ​​in the ash material level, humidity value, viscosity value, pressure value and ash flow that do not meet the respective corresponding preset conditions; if so, determine the target equipment in the air cannon, heater and vibrator that has a corresponding relationship with the abnormal value, control the target equipment, and dredge the ash conveying system. The blockage location in the ash conveying system can be detected in a timely and accurate manner, and the blockage can be automatically dredged, which is very efficient and also saves a lot of human resources and reduces the probability of personnel safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 It is a flow chart of a control method for preventing clogging of an ash conveying system of a thermal power plant provided by an embodiment of the present invention;

[0052] Figure 2 It is a structural schematic diagram of a control device for preventing clogging of an ash conveying system of a thermal power plant provided by an embodiment of the present invention;

[0053] Figure 3 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings 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.

[0055] Figure 1It is a flow chart of a control method for preventing the ash conveying system of a thermal power plant from being blocked, provided in an embodiment of the present invention. The executor of the method may be a computer, a mobile phone, or a smart wearable device, etc. The ash conveying system may include an ash conveying hopper, an ash conveying bin pump, and an ash conveying pipeline. An air cannon and a material level detector are provided in the ash conveying hopper, a heater, a humidity detector, and a viscosity detector are provided in the ash conveying bin pump, a pressure detector and a flow detector are provided in the ash conveying pipeline, and a vibrator is provided on the ash conveying pipeline. Generally, the ash in the ash conveying hopper enters the ash conveying pipeline through the ash conveying bin pump, and is then transported to the ash storage by the ash conveying pipeline.

[0056] See also Figure 1 , a control method for preventing the ash conveying system of a thermal power plant from being blocked may include the following steps 101 to 104.

[0057] 101. Obtain the ash material level in the ash conveying hopper detected by the material level detector, the humidity value and viscosity value of the ash material in the ash conveying silo pump detected by the humidity detector and the viscosity detector, and the pressure value and ash flow rate of the ash conveying pipeline detected by the pressure detector and the flow detector.

[0058] In this step, there can be multiple pressure detectors, which are respectively set at different positions of the ash conveying pipeline. Similarly, there can be multiple flow detectors, which are respectively set at different positions of the ash conveying pipeline. Generally, the pressure detector and the flow detector can be set in pairs at the same position of the ash conveying pipeline. In this way, the detection results of the pressure detector and the flow detector at the same position can be combined to determine whether the same position is blocked, which is conducive to improving the accuracy of the judgment result. Similarly, there can be multiple rappers, which are respectively set at different positions of the ash conveying pipeline. For example, they are set within the preset range of the ash conveying pipeline where the pressure detector and the flow detector are located. In this way, the rappers can be closer to the positions where the pressure detector and the flow detector are located, which is conducive to clearing the problem of blockage at the detected position. The preset range can be set, for example, any value within 1 meter, such as 0.1 meter, 0.2 meter, 0.4 meter, 0.6 meter, etc.

[0059] 102. Determine whether there are abnormal values ​​in the ash material level, humidity value, viscosity value, pressure value and ash flow rate that do not meet the corresponding preset conditions.

[0060] In this step, preset conditions that the ash material level, humidity value, viscosity value, pressure value and ash flow rate need to meet can be predefined. When the ash material level, humidity value, viscosity value, pressure value and ash flow rate meet the corresponding preset conditions, it indicates that the ash conveying system of the thermal power plant is not blocked.

[0061] Specifically, for example, the preset condition corresponding to the ash material level is lower than the preset material level; the preset condition corresponding to the humidity value is lower than the preset humidity value; the preset condition corresponding to the viscosity value is lower than the preset viscosity value; the preset condition corresponding to the pressure value is lower than the preset pressure value; and the preset condition corresponding to the ash flow rate is greater than the preset flow rate.

[0062] 103. If yes, determine the target equipment among the air cannon, heater and rapper that has a corresponding relationship with the abnormal value.

[0063] In this step, the correspondence between the air cannon and the material level detector (both corresponding to the ash hopper) can be determined in advance, which means the correspondence between the air cannon and the detected ash material level is determined. The correspondence between the heater and the humidity detector and the viscosity detector (both corresponding to the ash silo pump) can be determined in advance, which means the correspondence between the heater and the detected humidity value and viscosity value is determined. The correspondence between the rapper and the pressure detector and the flow detector (both corresponding to the ash conveying pipeline) can be determined in advance, which means the relationship between the rapper and the pressure value and the ash flow is determined. Based on the above relationships, the target equipment among the air cannon, heater and rapper that has a corresponding relationship with the abnormal value can be determined.

[0064] 104. Control the target equipment and unclog the ash conveying system.

[0065] In this step, when the target device is an air cannon, the air cannon can be started to unclog the ash hopper. When the target device is a heater, the heater can be started to heat the ash in the ash silo pump, thereby reducing the humidity and viscosity of the ash, thereby unclogging the ash silo pump. When the target device is a vibrator, the vibrator can be started to unclog the ash pipeline.

[0066] In this embodiment, the ash material level in the ash hopper detected by the level detector, the humidity value and viscosity value of the ash material in the ash silo pump detected by the humidity detector and the viscosity detector, and the pressure value and ash flow of the ash pipeline detected by the pressure detector and the flow detector are obtained, and it is determined whether there are abnormal values ​​in the ash material level, humidity value, viscosity value, pressure value and ash flow that do not meet the respective corresponding preset conditions. If so, the target equipment in the air cannon, heater and vibrator that has a corresponding relationship with the abnormal value is determined, the target equipment is controlled, and the ash conveying system is unblocked. The blockage location in the ash conveying system can be detected timely and accurately, and automatically unblocked, which is very efficient and saves a lot of human resources and reduces the probability of personnel safety accidents.

[0067] In one embodiment of the present specification, determining a target device among the air cannon, the heater, and the rapper that has a corresponding relationship with the abnormal value may include:

[0068] When the ash material level is an abnormal value, determining that the air cannon is a target device;

[0069] When the humidity value and / or the viscosity value is an abnormal value, determining that the heater is a target device;

[0070] When the pressure value and / or the ash flow rate are abnormal values, determining the rapper as a target device;

[0071] Controlling the target equipment and unblocking the ash conveying system may include:

[0072] When the air cannon is the target device, the air cannon is started to loosen the ash in the ash conveying hopper, and when the ash level is lower than the preset level, the air cannon is stopped;

[0073] When the heater is the target device, the heater is started to heat the ash in the ash conveying silo pump, and when the humidity value is lower than the preset humidity value and the viscosity value is lower than the preset viscosity value, the heater is stopped;

[0074] When the rapper is the target device, the rapper is started to loosen the ash in the ash conveying pipeline, and when the pressure value is lower than the preset pressure value and the ash flow rate is greater than the preset flow rate, the rapper is stopped.

[0075] In this embodiment, the air cannon is started, and the compressed air can be discharged quickly to form a strong air flow impact, thereby breaking the blockage problem of the ash conveying hopper.

[0076] Starting the heater to heat the ash in the ash silo pump can accelerate the volatilization of water in the ash, reduce humidity, and reduce the adhesion between ash particles, thereby increasing the fluidity of ash particles and reducing the risk of blockage. In addition, under the heating effect of the heater, the temperature of the ash rises, preventing condensation on the surface of the ash particles, avoiding the formation of sticky substances, and reducing the possibility of blockage.

[0077] Start the vibrator, which generates strong exciting force through the vibration motor, directly acting on the wall of the ash conveying pipeline, so that the attached ash is subjected to vibration impact. The vibration impact can effectively destroy the agglomeration structure of the ash, loosen it and restore its fluidity.

[0078] In one embodiment of the present specification, the ash conveying system further includes a compressor and an air storage tank, and starting the air cannon may include:

[0079] Controlling the compressor to compress air to obtain compressed air;

[0080] The compressed air is stored in the gas storage tank, and when the pressure in the gas storage tank is equal to the preset gas storage pressure, the compressed air is stopped from being input into the gas storage tank; wherein a first pressure gauge is installed in the gas storage tank for real-time monitoring of the pressure in the gas storage tank;

[0081] Control the compressed air in the air storage tank to reach the air inlet of the air cannon through the air pipeline, and enter the gun body of the air cannon along the air inlet; wherein the gun body of the air cannon is provided with a second pressure gauge for detecting the pressure in the gun body;

[0082] When the pressure in the cannon body of the air cannon reaches a preset pressure threshold, the air cannon is controlled to release air.

[0083] In this embodiment, the process of starting the air cannon to loosen the ash in the ash hopper can be as follows: first, the air is compressed by a compressor to obtain compressed air. The compressed air is stored in a high-pressure gas storage tank. The gas storage tank is usually made of steel and can withstand high pressure. A first pressure gauge is installed in the gas storage tank for real-time monitoring of the air pressure to prevent the air pressure from being greater than the preset gas storage pressure to ensure that it is within a safe range. The gas storage tank is connected to the air cannon through a conveying pipeline, and a control valve is installed in the conveying pipeline to adjust the flow in the conveying pipeline. The compressed air in the gas storage tank reaches the air inlet of the air cannon through the conveying pipeline and enters the gun body along the air inlet. The air inlet can be closed by a sealing piston to prevent air leakage. A second pressure gauge is provided in the gun body of the air cannon for detecting the pressure in the gun body. When the pressure in the gun body reaches a preset pressure threshold (e.g., 0.4-0.8Mpa), the air cannon is controlled to release air. At this time, the compressed air can be discharged quickly to form a strong air flow impact, thereby eliminating the blockage problem of the ash hopper.

[0084] In one embodiment of the present specification, the rapper may be arranged in a bending area, a reducer area, a rusty area, an outlet area and an inlet area of ​​the ash conveying pipeline.

[0085] In this embodiment, the probability of blockage occurring at different positions of the ash conveying pipeline is different. Therefore, detection can be carried out on some key areas that are prone to blockage, for example, the bending area, reducer area, rusty area, outlet area and inlet area of ​​the ash conveying pipeline can be detected. Without using too much detection equipment, the blocked area of ​​the ash conveying pipeline can be detected more comprehensively and accurately, thereby facilitating unblocking.

[0086] In one embodiment of the present specification, the control method for preventing the ash conveying system of a thermal power plant from being blocked may further include:

[0087] Acquiring a knocking sound generated by knocking the ash conveying pipeline;

[0088] The knocking sound is compared with a pre-stored target sound produced by knocking the ash conveying pipeline in a non-rusted state to obtain a comparison result;

[0089] The rusted area is determined according to the comparison result.

[0090] In this embodiment, the rusted area inside the ash conveying pipeline is difficult to observe. In order to accurately determine the rusted area inside the ash conveying pipeline, the ash conveying pipeline can be knocked to obtain a knocking sound generated by knocking the ash conveying pipeline. The knocking sound is compared with a pre-stored target sound generated by knocking the ash conveying pipeline in a non-rusted state to obtain a comparison result, and the rusted area is determined according to the comparison result.

[0091] In one embodiment of the present specification, comparing the knocking sound with a pre-stored target sound produced by knocking when the ash conveying pipeline is not rusted may include:

[0092] comparing the similarity between the frequency spectrum characteristics and waveform characteristics of the striking sound and the frequency spectrum characteristics and waveform characteristics of the target sound;

[0093] Determining the rust zone according to the comparison result may include:

[0094] When the similarity between the frequency spectrum characteristics and waveform characteristics of the knocking sound and the frequency spectrum characteristics and waveform characteristics of the target sound is less than a preset similarity threshold, the knocked area is determined to be a rusty area.

[0095] In this embodiment, the spectrum characteristics of the knocking sound and the spectrum characteristics of the target sound can be compared to obtain the spectrum similarity, and the waveform characteristics of the knocking sound and the waveform characteristics of the target sound can be compared to obtain the waveform similarity. The spectrum similarity and the waveform similarity are compared with their respective corresponding preset similarity thresholds. When the similarity between the spectrum characteristics and waveform characteristics of the knocking sound and the spectrum characteristics and waveform characteristics of the target sound is less than the preset similarity threshold, the knocked area is determined to be a rusty area, and the rusty area can be judged very accurately. The preset similarity thresholds corresponding to the spectrum similarity and the waveform similarity can be the same or different, and this embodiment does not make specific limitations.

[0096] In one embodiment of the present specification, before starting the rapper, the method may further include:

[0097] Detecting whether the ash conveying system is in a fault state;

[0098] If not, the step of starting the rapper is performed.

[0099] In this embodiment, the blockage of ash in the ash conveying pipeline is one of the reasons that cause the pressure value and / or the ash flow rate to be abnormal values. However, when the pressure value and / or the ash flow rate are abnormal values, it is not necessarily caused by the blockage of ash in the ash conveying pipeline, but may also be caused by a fault in the ash conveying system. Therefore, in order to avoid the rapper from being started by mistake, before starting the rapper, it is detected whether there is a fault in the ash conveying system. If not, the rapper is started. It can be understood that if there is a fault state, it is necessary to eliminate the fault state. After eliminating the fault state, the pressure value and the ash flow rate are re-obtained for judgment.

[0100] In one embodiment of the present specification, the fault state may include at least one of the following:

[0101] The valve of the ash conveying pipeline is opened less or closed;

[0102] The ash conveying pipeline is leaking.

[0103] In this embodiment, the opening of the valve of the ash conveying pipeline is reduced or closed (valve failure), and the ash conveying pipeline is leaking (pipeline failure), which may cause the pressure value to increase and be greater than the preset pressure value, resulting in a decrease in the ash flow rate and less than the preset flow rate, thus becoming an abnormal value. This embodiment helps to distinguish between the fault state and the blocked state of the ash conveying pipeline, so that the ash conveying pipeline can be dredged more accurately.

[0104] Based on the same general inventive concept, the present invention also protects a control device for preventing ash conveying system of a thermal power plant from being blocked, such as Figure 2 As shown, Figure 2 It is a schematic diagram of the structure of the control device for preventing the ash conveying system of a thermal power plant from being blocked, provided by an embodiment of the present invention. The control device for preventing the ash conveying system of a thermal power plant from being blocked, provided by the present invention, is described below. The control device for preventing the ash conveying system of a thermal power plant from being blocked described below and the control method for preventing the ash conveying system of a thermal power plant from being blocked described above can refer to each other. The ash conveying system includes an ash conveying hopper, an ash conveying bin pump and an ash conveying pipeline. An air cannon and a material level detector are provided in the ash conveying hopper. A heater, a humidity detector and a viscosity detector are provided in the ash conveying bin pump. A pressure detector and a flow detector are provided in the ash conveying pipeline. A vibrator is provided on the ash conveying pipeline.

[0105] The control device may include an information acquisition module 201 , an information judgment module 202 , a target determination module 203 and a control module 204 .

[0106] The information acquisition module 201 is used to obtain the ash material level in the ash hopper detected by the level detector, the humidity value and viscosity value of the ash material in the ash silo pump detected by the humidity detector and the viscosity detector, and the pressure value and ash flow rate of the ash conveying pipeline detected by the pressure detector and the flow detector.

[0107] The information determination module 202 is used to determine whether there are abnormal values ​​in the ash material level, the humidity value, the viscosity value, the pressure value, and the ash flow rate that do not meet the corresponding preset conditions.

[0108] The target determination module 203 is used to determine a target device among the air cannon, the heater and the rapper that has a corresponding relationship with the abnormal value.

[0109] The control module 204 is used to control the target device and dredge the ash conveying system.

[0110] Figure 3 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention.

[0111] like Figure 3 As shown, the electronic device may include: a processor 610, a communication interface 620, a memory 630 and a communication bus 640, wherein the processor 610, the communication interface 620 and the memory 630 communicate with each other through the communication bus 640. The processor 610 may call the logic instructions in the memory 630 to execute the control method for preventing the ash conveying system of the thermal power plant from being blocked.

[0112] In addition, the logic instructions in the above-mentioned memory 630 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0113] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the control methods provided by the above methods to prevent blockage of the ash conveying system of a thermal power plant.

[0114] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the control method for preventing the ash conveying system of a thermal power plant from being blocked provided by the above-mentioned methods.

[0115] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0116] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control method for preventing ash conveying system of a thermal power plant from being blocked, characterized in that: The ash conveying system includes an ash conveying hopper, an ash conveying bin pump and an ash conveying pipeline. The ash conveying hopper is provided with an air cannon and a material level detector. The ash conveying bin pump is provided with a heater, a humidity detector and a viscosity detector. The ash conveying pipeline is provided with a pressure detector and a flow detector, and a rapper is provided on the ash conveying pipeline. The control method includes: Obtaining the ash material level in the ash conveying hopper detected by the material level detector, the humidity value and viscosity value of the ash material in the ash conveying silo pump detected by the humidity detector and the viscosity detector, and the pressure value and ash flow rate of the ash conveying pipeline detected by the pressure detector and the flow rate detector; Determine whether there are abnormal values ​​in the ash material level, the humidity value, the viscosity value, the pressure value, and the ash flow rate that do not meet the corresponding preset conditions; If so, determining a target device among the air cannon, the heater, and the rapper that has a corresponding relationship with the abnormal value; Control the target equipment and dredge the ash conveying system.

2. The control method for preventing ash conveying system blockage in a thermal power plant according to claim 1, characterized in that: The preset condition corresponding to the ash material level is lower than the preset material level; The preset condition corresponding to the humidity value is lower than the preset humidity value; The preset condition corresponding to the viscosity value is lower than the preset viscosity value; The preset condition corresponding to the pressure value is lower than the preset pressure value; The preset condition corresponding to the ash flow rate is greater than a preset flow rate.

3. The control method for preventing ash conveying system blockage in a thermal power plant according to claim 2 is characterized in that: Determining a target device among the air cannon, the heater, and the rapper that has a corresponding relationship with the abnormal value comprises: When the ash material level is an abnormal value, determining that the air cannon is a target device; When the humidity value and / or the viscosity value is an abnormal value, determining that the heater is a target device; When the pressure value and / or the ash flow rate are abnormal values, determining the rapper as a target device; Controlling the target equipment and unblocking the ash conveying system includes: When the air cannon is the target device, the air cannon is started to loosen the ash in the ash conveying hopper, and when the ash level is lower than the preset level, the air cannon is stopped; When the heater is the target device, the heater is started to heat the ash in the ash conveying silo pump, and when the humidity value is lower than the preset humidity value and the viscosity value is lower than the preset viscosity value, the heater is stopped; When the rapper is the target device, the rapper is started to loosen the ash in the ash conveying pipeline, and when the pressure value is lower than the preset pressure value and the ash flow rate is greater than the preset flow rate, the rapper is stopped.

4. The control method for preventing ash conveying system blockage in a thermal power plant according to claim 3 is characterized in that: The ash conveying system also includes a compressor and an air storage tank, and the starting of the air cannon includes: Controlling the compressor to compress air to obtain compressed air; The compressed air is stored in the gas storage tank, and when the pressure in the gas storage tank is equal to the preset gas storage pressure, the compressed air is stopped from being input into the gas storage tank; wherein a first pressure gauge is installed in the gas storage tank for real-time monitoring of the pressure in the gas storage tank; Control the compressed air in the air storage tank to reach the air inlet of the air cannon through the air pipeline, and enter the gun body of the air cannon along the air inlet; wherein the gun body of the air cannon is provided with a second pressure gauge for detecting the pressure in the gun body; When the pressure in the cannon body of the air cannon reaches a preset pressure threshold, the air cannon is controlled to release air.

5. The control method for preventing ash conveying system blockage in a thermal power plant according to claim 1, characterized in that: The rapper is arranged in the bending area, the reducer area, the rusty area, the outlet area and the inlet area of ​​the ash conveying pipeline.

6. The control method for preventing ash conveying system blockage in a thermal power plant according to claim 5, characterized in that: Also includes: Acquiring a knocking sound generated by knocking the ash conveying pipeline; The knocking sound is compared with a pre-stored target sound produced by knocking the ash conveying pipeline in a non-rusted state to obtain a comparison result; The rusted area is determined according to the comparison result.

7. The control method for preventing ash conveying system blockage in a thermal power plant according to claim 6, characterized in that: The knocking sound is compared with a pre-stored target sound produced by knocking when the ash conveying pipeline is not rusted, including: comparing the similarity between the frequency spectrum characteristics and waveform characteristics of the striking sound and the frequency spectrum characteristics and waveform characteristics of the target sound; Determining the rust zone according to the comparison result includes: When the similarity between the frequency spectrum characteristics and waveform characteristics of the knocking sound and the frequency spectrum characteristics and waveform characteristics of the target sound is less than a preset similarity threshold, the knocked area is determined to be a rusty area.

8. The control method for preventing ash conveying system blockage in a thermal power plant according to claim 3 is characterized in that: Before starting the rapper, the method further comprises: Detecting whether the ash conveying system is in a fault state; If not, executing the step of starting the rapper; The fault state includes at least one of the following: The valve of the ash conveying pipeline is opened less or closed; The ash conveying pipeline is leaking.

9. A control device for preventing ash conveying system of a thermal power plant from being blocked, characterized in that: The ash conveying system includes an ash conveying hopper, an ash conveying bin pump and an ash conveying pipeline. The ash conveying hopper is provided with an air cannon and a material level detector. The ash conveying bin pump is provided with a heater, a humidity detector and a viscosity detector. The ash conveying pipeline is provided with a pressure detector and a flow detector, and a rapper is provided on the ash conveying pipeline. The control device includes: An information acquisition module, used to acquire the ash material level in the ash conveying hopper detected by the material level detector, the humidity value and viscosity value of the ash material in the ash conveying silo pump detected by the humidity detector and the viscosity detector, and the pressure value and ash flow rate of the ash conveying pipeline detected by the pressure detector and the flow rate detector; An information judgment module, used to judge whether there are abnormal values ​​in the ash material level, the humidity value, the viscosity value, the pressure value and the ash flow rate that do not meet the corresponding preset conditions; A target determination module, configured to, if yes, determine a target device among the air cannon, the heater and the rapper that has a corresponding relationship with the abnormal value; A control module is used to control the target device and dredge the ash conveying system.

10. An electronic 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 program, the control method for preventing the ash conveying system of a thermal power plant from being blocked as described in any one of claims 1 to 8 above is implemented.

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