2391results about "Solid removal" patented technology

The present invention relates to the technical field of waste heat recovery equipment, and specifically discloses a waste heat recovery device for flue gas in a thermal power plant. It includes a box body with an upper smoke chamber, a heat exchange chamber and a lower smoke chamber inside. A number of smoke pipes connecting the upper smoke chamber and the lower smoke chamber are fixed in the heat exchange chamber; above the smoke pipes, there is a piston cylinder fixed by the box body; the upper end of the piston cylinder is connected to a high-pressure gas supply pipe, and a piston is arranged inside. The piston is connected with a scraping head through a push rod; side holes are provided on the push rod; when the high-pressure gas drives the piston to move downward, the scraping head moves along the inner wall of the smoke pipe to scrape off the ash slag. The waste heat recovery device for flue gas in this thermal power plant has a cleaning function and a better cleaning effect, high heat exchange efficiency and good waste heat recovery effect. The waste heat recovery device for flue gas in this thermal power plant can be automatically cleaned without disassembling components, is fast and efficient, and can be operated online. The ash slag scraped off during the cleaning process can be centrally recovered, avoiding re-mixing into the flue gas again, reducing the workload in the flue gas dust treatment link, and saving the subsequent environmental protection treatment cost.

The invention provides a soot blowing control method, device and equipment for a boiler and a storage medium, and the method comprises the steps: collecting a soot deposition state image of a heating surface of the boiler in real time through visual equipment, carrying out the segmentation and feature extraction of the image, and generating an initial detail feature vector; reconstructing a dust deposition feature image based on the feature vectors, further segmenting and extracting basic local feature vectors, and generating a final dust deposition state image; and classifying the ash deposition state images corresponding to all the visual devices, calculating the ash deposition thermal resistance value corresponding to the target image, and comparing the ash deposition thermal resistance value with a preset threshold value so as to intelligently decide whether to start the ash blower to remove the deposited ash. By the adoption of the technical scheme, redundant soot blowing operation is reduced, the steam consumption of the soot blower and the blowing damage risk of the heating surface are effectively reduced, meanwhile, safety accidents caused by soot deposition are avoided, and the safety and economical efficiency of boiler operation are improved.

The invention belongs to the field of artificial intelligence, particularly relates to a boiler soot blower fault diagnosis method and device based on deep learning driving, and aims to solve the problems that traditional manual inspection and threshold alarm response is lagged, the false alarm rate is high, and expert experience is relied on. The method comprises the following steps: constructing a multi-modal data fusion architecture, synchronously collecting sensor time sequence data, voiceprint signals and execution mechanism logs, inputting the data into a multi-branch feature extraction network after time-space alignment and normalization, respectively extracting spatial anomaly, time sequence evolution and spectrum features, and dynamically fusing through a cross-modal gating mechanism to generate a joint representation vector; a self-adaptive small sample diagnosis model is input, and cross-domain generalization and fault type discrimination are realized in combination with a meta-learning framework; and finally deducing a fault trend by an evolution prediction sub-module. According to the method, the diagnosis real-time performance, accuracy and perspectiveness are remarkably improved, the unplanned shutdown risk is reduced, safe and stable operation of the thermodynamic system is guaranteed, and good engineering compatibility and interpretability are achieved.

The invention discloses an intelligent agent spraying decoking system for energy-saving decoking of a hearth, and relates to the technical field of decoking of industrial boilers, the intelligent agent spraying decoking system comprises a sensing module used for collecting coke scale characteristic data, and the data comprises the temperature, thickness, component distribution and adhesion strength of coke scale; the module is combined with a temperature sensor, a component analyzer and image detection equipment for cooperative work, and multi-dimensional scorch scale characteristic information is obtained in real time. According to the intelligent agent spraying decoking system for hearth energy saving and decoking, through cooperative use of the sensing module, the control module, the agent storage module, the agent spraying module and the feedback module, intelligent and accurate decoking is achieved, the diversity of coke scales can be effectively dealt with, the heat efficiency of a boiler is improved, the energy cost is reduced, and the safety problem caused by the coke scales can be prevented; the problems that a traditional decoking method is low in efficiency, poor in applicability and insufficient in adaptability to coke scale types are solved.

The invention relates to the technical field of automatic control, and discloses an intelligent ash deposition prevention self-cleaning system for a flue of a low-temperature economizer of a coal-fired power plant. According to the system, data such as temperature, humidity and flue gas components in a flue are acquired in real time through the data acquisition module, the dust deposition condition and cleaning requirements of the flue are accurately evaluated, the omission phenomenon caused by misjudgment in the manual cleaning process is avoided, the data processing and analysis module improves the data processing precision, and the data processing and analysis efficiency is improved. The system can also monitor the running state of the flue in real time, so that a cleaning instruction is automatically sent out when necessary, the timeliness and effectiveness of cleaning work are ensured, the cleaning execution module can efficiently remove accumulated dust while reducing the temperature of the flue through a mode of combining high-pressure airflow, a vibration device and a water spraying system, the time needed by cleaning is remarkably shortened, and the cleaning efficiency is improved. And the monitoring feedback module evaluates the cleaning effect, it is ensured that each time of cleaning can reach the preset standard, and the intelligent level and safety of flue cleaning are further improved.

The invention discloses a boiler flue gas waste heat recovery device, and relates to the technical field of boilers. Comprising a base, a heat exchanger and a dust collecting box which are arranged on the base, and five groups of heat exchange tubes which are transversely arranged in the heat exchanger; the cleaning unit comprises a smoke exhaust pipe and a smoke guide pipe, the smoke exhaust pipe is arranged between the heat exchanger and the ash collecting box, the smoke guide pipe is arranged on one side of the heat exchanger, and the smoke exhaust pipe and the smoke guide pipe are both communicated with the heat exchange pipe. By arranging the transverse cleaning assembly and the vertical cleaning assembly, dirt in the heat exchange pipe and the communicating pipe can be effectively and automatically removed in time, the effect of centralized treatment of the cleaned dirt can be achieved through the blocking assembly, it is ensured that the device can stably operate for a long time, the service life of the device is prolonged, and the using effect is better; dirt on the inner wall of the heat exchange pipe is automatically cleaned, so that the heat exchange efficiency is kept, and heat resistance increase caused by scaling is prevented.

An expansion joint includes: an outer tube including first and second ends and extending therebetween, the outer tube including first and second flanges, the first being located at the first end, the second being located at the second end and connectable to a downstream pipe; an inner tube including third and fourth ends and extending therebetween, the inner tube being located inside the outer and including third and middle flanges, the third flange being located at the third end and connectable to the upstream pipe, the middle flange being located at a middle portion between the third and fourth ends; and a closure including an outer peripheral portion connected to the first flange, an inner peripheral portion connected to the middle flange, and an elastic portion connecting the outer and inner peripheral portions. The first end is spaced from the third and located between the third and fourth ends.

The invention discloses a water-cooled wall soot blowing optimization method for preventing high-temperature corrosion based on a GA-BP neural network. The method comprises the following steps: 1, preprocessing operation data based on a weighted moving window; 2, selecting input and output parameters of the neural network; 3, setting GA-BP neural network parameters; 4, training a GA-BP neural network of the heat transfer capacity when the water cooling wall is theoretically cleaned and the actual heat transfer capacity of the water cooling wall; 5, superposition fitting is conducted on the heat loss change curve of the water cooling wall in the boiler operation process; 6, the soot blowing optimization model is solved based on the maximum unit time soot blowing net income, and the optimal soot blowing opportunity and the optimal soot blowing duration are obtained; and 7, dynamically adjusting the soot blowing opportunity and the soot blowing time according to the soot blowing strategy. The method can accurately monitor the heat loss change condition of the water cooling wall, and is suitable for practical engineering application.

The invention relates to an air preheater ash removal device which comprises a first rail (1) and a second rail (2), two transverse support assemblies (3) are arranged on the upper side of the first rail (1) and the upper side of the second rail (2) in parallel, the transverse support assemblies (3) move along the first rail (1) and the second rail (2), and a connecting frame (4) is connected between the two transverse support assemblies (3); vertical vibration devices (5) are arranged on the upper sides of the two transverse ends of the transverse support assembly (3) respectively, the vertical vibration devices (5) are connected with a main shaft (6), and a plurality of toothed plates (7) are arranged on the main shaft (6) at intervals; the middle of the transverse support assembly (3) is connected with an adapter plate (8), and the adapter plate (8) is connected with a horizontal driving device (9) used for driving the transverse support assembly (3) to move along the first track (1) and the second track (2). The ash removal device of the air preheater is good in ash removal effect.

The invention discloses a natural gas boiler cleaning device, and belongs to the technical field of boiler equipment.The natural gas boiler cleaning device comprises a boiler body and a combustor, the combustor is fixedly connected to one end of the boiler body, a smoke outlet is formed in the other end of the boiler body, a hearth is arranged in the boiler body, the combustor communicates with the hearth, and the combustor communicates with the hearth. The hearth is sleeved with a cleaning mechanism, the cleaning mechanism is slidably connected into the furnace body, one end of the furnace body is fixedly connected with an electric push rod, and the top end of the electric push rod is fixedly connected with the cleaning mechanism. In the using process of the boiler, the internal surface of the boiler can be regularly cleaned, incrustation generated on the inner wall of the boiler is removed, accumulation of the incrustation is delayed, the heat efficiency is improved, energy is saved, the frequency of overall overhauling and cleaning of the boiler during shutdown is reduced, and the production efficiency is effectively improved.

The invention provides a low-low-temperature economizer soot blowing control method based on machine learning. The low-low-temperature economizer soot blowing control method comprises the steps that key parameters of a low-low-temperature economizer in the soot blowing process are obtained; the key parameters comprise a fluid parameter, a temperature parameter, a heat exchange parameter and an ash deposition parameter; establishing each independent model based on the key parameters; the independent model comprises a temperature change rate model, a convective heat exchange model, a radiation heat exchange model and a reference heat loss model; the independent models are associated based on the heat change rate in the economizer, and an associated model is obtained; solving the correlation model, and determining actual heat loss caused by dust deposition at the current moment; a machine learning model is established, soot blowing frequency and soot blowing time are adjusted based on actual heat loss, the heat exchange efficiency of the low-low-temperature economizer is ensured, and balanced operation is achieved; by dynamically adjusting the soot blowing frequency and duration, it is ensured that the surface of the heat exchange element is kept in a good heat exchange state, soot blowing and equipment abrasion are balanced, energy consumption and cost are reduced, and efficient, economical and environment-friendly operation is achieved.

The invention discloses a device and method for inhibiting the blockage of a waste heat boiler, and relates to the technical field of waste heat power generation. The device and method for inhibiting the blockage of a waste heat boiler include a machine body, and also include a stirring device, a sewage discharge device and a pretreatment device; wherein, a steam port is fixedly connected to the top of the machine body, a preparation bin is fixedly connected to the left side of the machine body, and a water inlet is fixedly connected to the left side of the preparation bin; wherein, the stirring device includes a motor, a transmission shaft, a support plate 1, a scraper 1, a long plate 1, a baffle, a rotating shaft, a long plate 2, a support plate 2 and a disc; the device and method for inhibiting the blockage of a waste heat boiler, when the support plate 1 and the support plate 2 rotate, the support plate 1 and the support plate 2 will drive the scraper 1 to scrape the inner wall of the machine body, and when the scraper 1 scrapes in the machine body, the scraper 1 will scrape off the impurities and dust inside the machine body, which can effectively prevent the impurities from adhering to the inner wall of the machine body and prevent the machine body from being corroded.

The utility model discloses an ash bucket ash amount self-adaptive adjusting system, which comprises a dust remover ash bucket, a bin pump, an ash conveying main pipe, an air compressor, a heater, an ash silo, a fly ash transport vehicle and an ash amount secondary distribution system, and the dust remover ash bucket is respectively provided with a high material level monitoring meter, a middle-high material level monitoring meter, a middle material level monitoring meter and a low material level monitoring meter at different heights. A first pressure sensor is arranged on the ash conveying main pipe, the ash conveying main pipe is further connected with a secondary distribution main pipe, and the output end of the secondary distribution main pipe is connected with a dust remover ash hopper through a second control valve. And the ash quantity secondary distribution system is electrically connected with the high material level monitoring meter, the medium-high material level monitoring meter, the medium material level monitoring meter, the low material level monitoring meter and the first pressure sensor respectively. According to the utility model, the amount of ash in different ash buckets of the coal-fired power plant can be adjusted, and ash removal is carried out only when the amount of ash in each ash bucket is full, so that the ash removal frequency is reduced, the abrasion degree of an ash conveying pipeline is reduced, and the service life of an ash conveying system is prolonged.

The utility model discloses a boiler air pre-heater with a cleaning function, which comprises an air pre-heater body, the air pre-heater body comprises a tube box, a smoke tube bundle and a scraper device are arranged in a heat exchange cavity of the tube box, and the scraper device is used for scraping dirt on the outer side wall of each smoke tube in the smoke tube bundle; a smoke inlet pipe and a smoke exhaust pipe are arranged at the two ends of the pipe box respectively, the axis of a smoke inlet of the smoke inlet pipe and the axis of a smoke outlet are arranged in an angle mode, an extending pipe extending in the axial direction is arranged on the side, opposite to the smoke outlet, of the smoke inlet pipe and communicated with the smoke inlet pipe, and a scraping and washing device is arranged in the extending pipe. The scraping and washing device is used for scraping dirt on the inner side wall of each smoke tube in the smoke tube bundle; a valve control assembly is arranged at the joint of the extension pipe and the smoke inlet pipe. According to the smoke tube bundle cleaning device, dirt accumulated on the inner side wall and the outer side wall of each smoke tube in the smoke tube bundle is scraped away in a scraping and washing mode under the condition that disassembly is not needed, and therefore cleaning of the smoke tube bundle is achieved, heat exchange efficiency is improved, cost is reduced, and the service life is greatly prolonged.

The invention relates to the technical field of waste heat recovery equipment, and particularly discloses a flue gas waste heat recovery device for a thermal power plant. An upper smoke chamber, a heat exchange chamber and a lower smoke chamber are arranged in the box body, and a plurality of smoke pipes for communicating the upper smoke chamber with the lower smoke chamber are fixed in the heat exchange chamber; a piston cylinder fixed by the box body is arranged right above the smoke pipe; the upper end of the piston cylinder is connected with a high-pressure air supply pipe, and a piston is arranged in the piston cylinder and connected with a wall scraping head through a push rod. The push rod is provided with a side hole. When the high-pressure gas drives the piston to move downwards, the wall scraping head moves close to the inner wall of the smoke pipe, and ash is scraped away. The flue gas waste heat recovery device for the thermal power plant has a cleaning function and is good in cleaning effect, high in heat exchange efficiency and good in waste heat recovery effect. The flue gas waste heat recovery device for the thermal power plant can be automatically cleaned, parts do not need to be disassembled, and the device is fast, efficient and capable of being operated online. Ash scraped in the cleaning process can be recycled in a centralized mode and is prevented from being mixed into flue gas again, the workload of the flue gas dust treatment link is reduced, and the follow-up environment-friendly treatment cost is saved.

The invention provides an intelligent sound wave soot blower control system based on a DCS, and the system comprises a sensor module which is used for collecting equipment operation parameters; the field control station is used for carrying out primary processing and caching on the equipment operation parameters acquired by the sensor; the data acquisition module is used for integrating and formatting the data; the distributed control module is used for establishing an optimal soot blowing simulation model and a dynamic adjustment model based on the physical characteristics of the equipment operation parameters, and is used for calculating ideal soot blowing information and a dynamic adjustment result determined based on the ideal soot blowing information; controlling the soot blowing action of the sound wave soot blower according to the dynamic adjustment result; the central monitoring station is used for feeding back the difference between the effects before and after soot blowing and optimizing and adjusting the dynamic adjustment model based on the difference; the invention aims at solving the problems of heat exchange efficiency reduction and resistance increase caused by ash deposition of the low-low-temperature economizer, improving the overall operation performance of the low-low-temperature economizer, prolonging the service life of equipment and achieving the purposes of energy conservation and environmental protection.

The utility model discloses a boiler flue gas waste heat recycling device which comprises a box body, a first scraping mechanism, a second scraping mechanism, a dust removal mechanism, a waste heat utilization box, a spiral gas guide pipe and a locking mechanism, the first scraping mechanism is arranged on the lower side of the interior of the box body, and the second scraping mechanism is arranged on the upper portion of the first scraping mechanism. The dust removal mechanism is arranged at the upper end in the box body, the spiral air guide pipe is arranged in the waste heat utilization box, and the locking mechanism is arranged on the front side of the box door and the front side of the box body. Compared with the prior art, the cleaning device has the advantages that the first scraping-out mechanism is arranged, smoke dust adhered to the two side walls and the bottom in the box body can be scraped out by pulling the first handle to be matched with the first scraping plate and the second scraping plate, dust on the rear wall in the box body can be scraped away by pulling the second handle to be matched with the third scraping plate, and the cleaning efficiency is greatly improved.

The utility model relates to the technical field of on-line monitoring devices, and discloses a pulverized coal fired boiler combustion state on-line monitoring device which comprises a boiler shell, an ignition device is arranged on the surface of the boiler shell, and a flue gas exhaust pipe is arranged at a gas outlet. The industrial camera is arranged on the surface of the boiler shell; the fan is arranged on the upper surface of the boiler shell, an air outlet of the fan is connected with the cleaning ring through an air inducing pipe, the cleaning ring is installed on the inner wall of the boiler shell and located on the periphery of the lens, and air outlet pipes are evenly distributed on the inner wall. The flue gas analyzer is arranged at an air outlet of the flue gas exhaust pipe, and a high-temperature infrared temperature measuring unit and a pressure fluctuation sensor are further arranged in the boiler shell. The device has the advantages that airflow is conveyed to the cleaning ring through the draught fan via the air inducing pipe, a directional airflow field surrounding the lens is formed through the air outlet pipe on the inner wall of the cleaning ring, the surface of the lens is purged in real time, imaging blurring caused by dust accumulation is prevented, the cleaning ring and the lens are coaxially installed, it is ensured that the purge range is fully covered, and continuous work of an image collecting system is maintained.

The invention provides a high-pressure air energy soot blower which comprises an air storage tank, a compressor and an injection assembly, the air storage tank is provided with an air inlet and an air outlet, an outlet of the compressor is connected with the air inlet so as to be used for introducing compressed gas into the air storage tank, the injection assembly comprises an injection pipe, and the injection pipe is connected with the compressor. The injection pipe comprises a first section and a second section, the first section is connected between the air outlet and the second section, the second section is provided with a plurality of injection holes which are arranged at intervals in the length direction of the injection pipe, and the pipe diameter of the second section is gradually reduced in the direction from the first section to the second section. The high-pressure air energy soot blower has the advantages of being simple in structure and good in cleaning effect.

The embodiment of the invention provides an intelligent soot blowing method, system and equipment for dry deslagging of a tower type boiler and a storage medium. The method comprises the steps that the furnace bottom slag falling condition and the dry slag discharging transportation amount corresponding to a current soot blowing heating surface area are obtained in real time; according to the furnace bottom slag falling condition and the dry slag discharging transportation volume, the soot blowing effect of each heating surface area of the hearth is judged; controlling the soot blowing frequency of each heating surface area of the hearth according to the soot blowing effect of each heating surface area of the hearth and a pre-established soot blowing strategy; wherein the soot blowing strategy is obtained through fuzzy logic calculation according to a soot condition monitoring model, a soot blowing expert system and a soot blowing economic model. According to the embodiment of the invention, the boiler bottom slag falling condition and the slag discharging amount condition of the heating surface area are monitored in real time, so that fine control of boiler soot blowing is realized, and the problem that soot blowing of the heating surface area of a high-capacity and high-parameter combustion boiler is generally extensive is solved.

The utility model discloses a boiler flue gas filtering device, and relates to the technical field of flue gas filtering. The boiler smoke filtering device comprises a shell, a smoke exhaust pipeline is fixedly installed at the top of the shell, a sampling pipeline is fixedly installed on the side face of the smoke exhaust pipeline, and a baffle assembly is arranged in the smoke exhaust pipeline; the baffle assembly comprises a linear motor and a motor guide rail, the motor guide rail is fixedly installed on the inner wall of the smoke exhaust pipeline, a fixing base is fixedly installed on the inner wall of the smoke exhaust pipeline, and a supporting rod is fixedly installed on the upper side of the fixing base. According to the boiler smoke filtering device, a linear motor is started to drive a sliding seat to vertically move upwards along a supporting rod, and a first baffle and a second baffle are unfolded on the upper side of a smoke exhaust pipeline under the cooperation of a first rod, a second rod and a third rod, so that rainwater or strong light is shielded; rainwater is prevented from entering the smoke exhaust pipeline to cause erosion or strong light is prevented from causing local high temperature to the smoke exhaust pipeline, and the service life of the smoke exhaust pipeline is greatly prolonged.

The utility model discloses a boiler tail flue accumulated ash cleaning structure, and relates to the technical field of boilers. The cleaning device comprises a cover plate, a lead screw motor, a mounting frame and an annular pipe, the lead screw motor is fixed to the center of the upper end of the cover plate, a transmission lead screw is rotationally connected into the lead screw motor in a penetrating mode, the mounting frame is fixed to the bottom of the transmission lead screw, and a cleaning motor is fixed into an inner cavity of the mounting frame; an output shaft of the cleaning motor penetrates through the bottom end of the mounting frame and is fixedly provided with a cleaning shaft, and rake rods, scraping plates and steel wire brushes which are symmetrically distributed are fixed to the periphery of the cleaning shaft; an annular pipe is arranged outside the mounting frame, and blowing heads distributed in an annular array are fixed to the outer side face of the annular pipe in a penetrating mode. By arranging the lead screw motor, the transmission lead screw, the cleaning shaft, the rake rod, the scraping plate, the steel wire brush, the annular pipe, the blowing head, the cover plate and the arc plate, the problem that accumulated dust in a boiler flue cannot be comprehensively cleaned is solved; and certain leakproofness is lacked when the accumulated ash of the boiler is cleaned.

The invention relates to the technical field of thermal power generating unit intelligent operation, in particular to a thermal power generating unit intelligent operation auxiliary decision-making system based on big data analysis, which comprises a water cooling wall working condition synchronous acquisition module, a temperature difference dynamic compensation module, a soot deposition rate analysis module, a soot blowing demand prediction module and an intelligent soot blowing decision-making module. Wherein the temperature difference dynamic compensation module is used for executing humidity compensation calculation on pipe wall temperature difference data and outputting compensated temperature difference data; the ash deposition rate analysis module is used for calculating current water-cooled wall ash deposition rate data; the soot blowing demand prediction module is used for calculating remaining effective time data for reaching the maximum allowable soot deposition thickness; the intelligent soot blowing decision module is used for matching a corresponding soot blowing strategy; according to the method, through multi-source data fusion and dynamic soot blowing strategy matching, accurate prediction and efficient soot blowing decision making of water-cooled wall soot deposition are achieved, and the safety and economical efficiency of the boiler are remarkably improved.

The invention discloses waste heat recovery equipment for treating combustion flue gas for natural gas power generation, and relates to the technical field of flue gas waste heat recovery, the side face of a shell is fixedly connected with a flue gas inlet component, and the side, away from the flue gas inlet component, of the shell is fixedly connected with a flue gas outlet component. When combustion flue gas enters the shell through the flue gas inlet pipe, an external water pipe is connected with the water inlet, cold water continuously enters the heat exchange box through the water inlet, so that the cold water is fully contacted with the combustion flue gas to heat the cold water, and meanwhile, the heated cold water is discharged through the water outlet; when combustion smoke continuously makes contact with the heat exchange pipe, a large amount of condensate water is left on the side face of the heat exchange pipe in a hanging mode, when the combustion smoke continuously makes impact contact with the heat exchange box, the contact mechanism moves on the sliding rod, and therefore the contact mechanism scrapes off the condensate water left on the heat exchange pipe in a hanging mode.

The utility model relates to the technical field of waste heat boilers, in particular to an ash removal device for a waste heat boiler of an iron alloy submerged arc furnace, which comprises a base, a waste heat recovery box, a water inlet pipe, a water outlet pipe, an air inlet pipe, an air outlet pipe and an ash removal mechanism. The water outlet pipe is fixedly connected with the surface of the waste heat recovery box, the air inlet pipe is fixedly connected with the surface of the waste heat recovery box, the air outlet pipe is fixedly connected with the surface of the waste heat recovery box, the ash removal mechanism is arranged on the surface of the air inlet pipe and comprises a fixing table, the fixing table is fixedly connected with the surface of the air inlet pipe, and the surface of the fixing table is rotationally connected with a first fan. According to the waste heat recovery device, the dust removal mechanism is arranged, blowing force generated when hot flue gas enters the waste heat recovery box is used for driving the cleaning plate and the hemispherical block to clean the surface of the heat exchange pipe, dirt and dust on the surface of the heat exchange pipe are prevented from being accumulated, the heat exchange efficiency is prevented from being affected, and the durability of the device is effectively improved.

The invention discloses a coal economizer online cleaning and anti-blocking automatic control system which is mainly composed of a dirt monitoring module, a cleaning decision module, a cleaning execution module, an anti-blocking monitoring module, an anti-blocking decision module and an anti-blocking execution module which are connected through signal lines or a communication network, and data transmission and instruction interaction are achieved. The whole system can automatically make cleaning and anti-blocking decisions according to monitored conditions and execute corresponding operations. Meanwhile, the data recording and analyzing module can record and analyze the operation data, a basis is provided for optimization of the system, the system can continuously learn and adapt to the operation state change of the economizer, and the overall performance of the system is improved.

The invention relates to a system and a method for quickly adjusting the load of a coal-fired unit. The system for quickly adjusting the load of the coal-fired unit comprises a coal mill unit, a first-class coal mill and a second-class coal mill, the pulverized coal burner group comprises a first type of pulverized coal burners and a second type of pulverized coal burners, the first type of pulverized coal burners correspond to and are communicated with the first type of coal mills, the second type of pulverized coal burners correspond to and are communicated with the second type of coal mills, and a second type of pulverized coal pipeline is provided with an adjusting turn-off device; the position of the adjusting turn-off device on the second-class pulverized coal pipeline is adjustable; a powder-containing burner; and the pulverized coal classifier is connected to the second-class coal mill through a second-class pulverized coal pipeline so as to receive pulverized coal, and is connected to the pulverized coal-containing burner, the first-class pulverized coal burner and the second-class pulverized coal burner through the second-class pulverized coal pipeline so as to controllably convey the pulverized coal in a working state. In this way, the load of the coal-fired unit can be rapidly adjusted.

The utility model discloses a circulating fluidized bed boiler furnace outlet horizontal flue ash removal device which comprises a furnace, a horizontal flue, a cyclone separator, a high-temperature superheater, a low-temperature superheater, a coal economizer and an ash removal device, one end of the ash removal device is arranged at the bottom of the horizontal flue, and the other end of the ash removal device is arranged at the lower end of the coal economizer. The ash removal device comprises a primary air pre-heater, a conveying air pipe, a conveying air branch pipe and an ash removal module, and the ash removal module is arranged at the bottom in the horizontal flue and comprises a main air pipe, a branch air pipe, a connecting rod and a small air cap. A small part of primary air is led to the bottom of the horizontal flue at the hearth outlet through the bypass pipeline of the primary air pre-heater and enters the ash removal device, accumulated ash accumulated at the horizontal flue at the hearth outlet is loosened and fluidized through the small air cap and then enters the cyclone separator along with flue gas, and therefore the purpose of removing the accumulated ash in the horizontal flue at the hearth outlet is achieved. After accumulated ash is cleaned, the smoke flow speed of a hearth outlet is reduced, and the efficiency of the boiler is improved.

According to the technical scheme, the real fire fireplace with the ash removal function is characterized by comprising a fireplace body, a transverse exhaust duct for receiving exhausted hot waste gas is arranged in the fireplace body, the two ends of the transverse exhaust duct are connected with ash falling pipes and spiral ash pushing pieces arranged on the transverse exhaust duct, and the spiral ash pushing pieces are spiral springs; the spiral spring is divided into a left part and a right part, and the rotation directions of the two parts are opposite; the rotating rod is fixed at one end of the spiral ash pushing piece and extends out of the ash falling pipe; and a rotating assembly is arranged at the end, extending out of the ash falling pipe, of the rotating rod and drives the rotating rod to rotate, a built-in spiral spring is adopted to convey ash in the transverse exhaust channel into the ash falling pipe in a centralized mode, and the effect of conveniently cleaning impurities on the flowing path of waste hot air is achieved.

The invention provides a fault detection method and device for a soot blower in a coal-fired power plant, and the method comprises the steps: detecting the temperature of a valve of the soot blower through a temperature detection module, and transmitting the temperature to an intelligent data collection front-end module; the intelligent data acquisition front-end module packs the temperature into a digital signal temperature value and transmits the digital signal temperature value to the DCS control module; unpacking the digital signal temperature value into an analog signal temperature value through a DCS control module; the opening and closing state of a valve of the soot blower and a preset temperature value corresponding to the opening and closing state are obtained through a DCS control module; through a DCS control module, temperature values of all analog signals within a preset time period after the opening and closing state is obtained are selected; the soot blower is detected through the DCS control module according to the opening and closing state, the preset temperature value corresponding to the opening and closing state and the selected analog signal temperature values, the problem that the actual state of the valve of the soot blower cannot be truly reflected when mechanical transmission breaks down is solved, and the accuracy of the detection result is improved.