653results about "Combustion process" patented technology

The invention relates to the technical field of thermal equipment operation state dynamic test and compensation control, in particular to an AI-based boiler air pre-heater temperature uniformity regulation and control system, which comprises a collaborative closed-loop control network of a data acquisition module, an AI prediction module, a heat storage system control module, a temperature compensation control module and a thermal stress analysis module. The data acquisition module acquires flue gas temperature, coal quality parameters and load instructions in real time, the flue gas temperature, the coal quality parameters and the load instructions are transmitted to the AI prediction module through an industrial bus, XGBoost, LightGBM and a deep neural network model are used for carrying out spatial-temporal feature extraction on the evolution trend of a temperature field, and the heat storage system control module dynamically switches heat storage and release modes according to the load state. The heat distribution proportion among the multiple units is adjusted by combining the three-dimensional stress field distribution data of the thermal stress analysis module; the bottleneck of lack of thermal inertia regulation of an existing system is broken through, dynamic balance of a temperature field under the condition that thermal stress of a heat transfer element is controllable is achieved, and the heat exchange efficiency and operation stability of the air pre-heater are improved.

A bearing system includes a housing having an inner surface defining a bore and a slot, and a foil bearing assembly positioned within the bore. The foil bearing assembly includes an outer foil assembly, a bump foil assembly, and an inner foil assembly. The outer foil assembly includes an outer foil extending from a first outer foil end to a second outer foil end, and a first anti-rotation tab at the first outer foil end that is received by the slot to limit circumferential movement of the outer foil in a first direction. The inner foil assembly is secured to the outer foil and includes an inner foil extending from a first inner foil end to a second inner foil end, and a second anti-rotation tab at the second inner foil end that is received by the slot to limit circumferential movement of the inner foil in a second direction.

A magnetic bearing system (100) includes a rotary shaft (101) and a magnetic bearing (105, 107, 130) having an electromagnet coil (106, 108, 108B, 135, 136). One end of the electromagnet coil (106, 108, 108B, 135, 136) is connected to the neutral point of a first multi-phase winding (113, 115, 123, 125, 173, 181) having at least three or more phases.

The invention discloses an intelligent control method and system for preventing blockage of an air preheater, and the method comprises the steps: determining the flue gas flow difference data of the front and rear sides of the air preheater, evaluating the blockage condition of the air preheater to obtain a blockage evaluation value, and setting the initial working condition of a blowing device according to the blockage evaluation value; acquiring flue gas temperature data and flue gas flow data of the front side of the air preheater, and determining a flue gas temperature coefficient and a flue gas flow coefficient through analysis; and a regulation and control coefficient is determined based on the flue gas temperature coefficient and the flue gas flow coefficient, and after the initial working condition of the air blowing device is adjusted, the air blowing device is controlled to conduct anti-blocking air blowing on the air preheater. By monitoring the flue gas flow difference data in real time, analyzing the flue gas temperature and flow data and combining an intelligent algorithm and a control strategy, intelligent anti-blocking control over the air preheater can be achieved in time, stable operation of equipment is ensured, the service life of the equipment is prolonged, the maintenance cost is reduced, and the production efficiency is improved.

The waste heat utilization equipment comprises a main flue, a bypass outlet and a bypass inlet are formed in the middle side wall of the main flue, a dust removal system is arranged on the main flue, and the bypass inlet is located in front of the dust removal system; an inlet of the bypass flue is connected with the bypass outlet, and an outlet of the bypass flue is connected with the bypass inlet; the heat exchanger is arranged on the bypass flue and connected with a water supply system of the boiler; the baffle device is arranged at an outlet of the bypass flue; the first temperature instrument is arranged on the side wall of the main flue and located between the bypass inlet and the dust removal system; and the controller is electrically connected with the baffle device and the first temperature instrument, and the controller is used for controlling the baffle opening degree of the baffle device based on the detected temperature of the first temperature instrument so that the flue gas temperature at the inlet of the dust removal system can be within a preset first temperature range. The technical problem that the waste heat utilization rate of the boiler is low is solved.

The invention belongs to the field of heat-engine plant boiler flue gas waste heat recycling, and discloses a boiler waste heat recycling system which comprises an air preheater and a boiler, and a flue gas outlet of the boiler is communicated with a flue gas channel inlet of the air preheater through a pipeline; an outlet of an air channel of the air preheater communicates with a combustion-supporting air inlet of the boiler through a pipeline, and an inlet of the air channel is used for introducing air to be heated. The air preheater further comprises a preheating unit, the preheating unit comprises a compartment, and the compartment is arranged on the air side of the air preheater and located between the smoke channel and the air channel. The air inlet end and the air outlet end of the compartment are communicated through a circulating pipeline; the circulating fan is arranged on the circulating pipeline and is used for driving the gas in the compartment to circulate; according to the scheme, by means of the buffer area formed by the compartments and the circulating fan, the temperature shock amplitude of the heat accumulator in the alternate heat absorption and heat release process is reduced, and deformation of the heat accumulator caused by too large local thermal stress is relieved; the problem that the heat accumulator is heated unevenly is solved.

The invention relates to waste heat recovery equipment and a natural gas hydrogen-doped combustion system. The waste heat recovery equipment comprises a first heat exchanger, a second heat exchanger and a spray tower, the first heat exchanger is provided with a first heat absorption side and a first heat release side, an outlet of the first heat absorption side is communicated with a combustion-supporting gas inlet of the combustor, the second heat exchanger is provided with a second heat absorption side and a second heat release side, and an inlet of the second heat release side is connected with a high-temperature flue gas outlet of the combustor. The spray tower is provided with a cooling water inlet, a smoke inlet, a smoke outlet and a spray water outlet, the smoke inlet is communicated with the outlet of the second heat release side, the spray water outlet is communicated with the inlet of the second heat absorption side, and the outlet of the second heat absorption side is communicated with the inlet of the first heat release side. According to the waste heat recovery equipment, two-stage waste heat recovery of high-temperature flue gas is achieved, the waste heat recovery efficiency is remarkably improved, combustion-supporting gas can be heated, accordingly, other combustion efficiency is improved, natural gas consumption and carbon emission are reduced, and the requirements for energy conservation and carbon reduction in the industrial high-temperature combustion process are met.

The utility model discloses an air preheater for a burner at the bottom of an ethylene cracking furnace, and relates to the field of ethylene cracking, the air preheater comprises an air preheater body and a connecting air duct, the air preheater body comprises a preheater shell, an air inlet and an air outlet are formed in the two ends of the preheater shell respectively, and a heat exchange tube bundle is arranged in the preheater shell; a heat source inlet and a heat source outlet are formed in the preheater shell and connected to the two ends of the heat exchange tube bundle correspondingly. The air outlet is connected to a combustor at the bottom of the cracking furnace through a connecting air duct; one air preheater body is matched with a plurality of cracking furnace bottom combustors. The cracking furnace solves the problem that the bottom space of the cracking furnace is limited, is suitable for limited space, saves occupied area and is high in heat exchange efficiency.

The invention discloses an energy-saving boiler, and relates to the technical field of boilers, the energy-saving boiler comprises a boiler body and a smoke exhaust pipeline mounted on the boiler body, the energy-saving boiler further comprises an air preheater mounted at the tail end of the smoke exhaust pipeline, and a pair of heat exchange pipe sets distributed in the smoke exhaust direction is mounted in the air preheater; the heat exchange tube set is composed of a plurality of heat exchange tube bundles, expanding parts and reducing parts which are alternately distributed along the axes of the heat exchange tube bundles are arranged on the heat exchange tube bundles, spiral flow deflectors and movable cleaning frames with upper and lower openings are arranged on the inner walls of the reducing parts, and the movable cleaning frames are movably installed in the heat exchange tube set and provided with through holes allowing the heat exchange tube bundles to penetrate through. Annular cleaning turbulent flow pieces corresponding to the heat exchange tube bundles are rotationally installed in the movable cleaning frame. By arranging the movable cleaning frame and a plurality of annular cleaning turbulent flow pieces in the movable cleaning frame, the outer wall of the heat exchange tube bundle can be continuously scraped in the moving process, and compared with a traditional soot blowing mode, the mechanical scraping mode is more thorough in soot cleaning.

The utility model relates to a horizontal tubular air preheater with turbolators, which is characterized in that a first-stage air preheater and a second-stage air preheater are arranged in a frame, a plurality of turbolator heat exchange tubes are respectively arranged in the first-stage air preheater and the second-stage air preheater, flue gas sequentially and transversely scours the second-stage air preheater and the first-stage air preheater, and the turbolator heat exchange tubes are arranged in the first-stage air preheater and the second-stage air preheater. Flue gas and air flow in the countercurrent direction, the flue gas exchanges heat with the air in the turbolator heat exchange tubes, and a plurality of rows of guide plates are obliquely arranged at the top and the bottom of the frame respectively to prevent the flue gas from forming flue gas corridors on the upper side and the lower side. The turbulent flow is increased, so that the thickness of a retention bottom of main heat resistance of convective heat transfer is reduced, heat transfer is enhanced, and the heat transfer coefficient K is increased by 50% compared with that of a common tubular preheater.

The invention relates to a method and a system for calculating air leakage of a three-section rotary air pre-heater. The method comprises the following steps: acquiring related data of primary air, secondary air and a flue gas bin; the air leakage amount of primary air and secondary air is calculated on line; wherein the air leakage amount of the primary air comprises the air leakage amount of the primary air leaking into the flue gas bin and the air leakage amount of the primary air leaking into the secondary air; the air leakage amount of the secondary air comprises the air leakage amount of the secondary air leaking into the flue gas bin; the average differential pressure among the primary air, the secondary air and the flue gas bin is calculated through a variable flow method; the average differential pressure corresponding to the primary air or the secondary air is changed, and the air leakage coefficient of the primary air leaking into the smoke bin, the air leakage coefficient of the primary air leaking into the secondary air and the air leakage coefficient of the secondary air leaking into the smoke bin are obtained; the temperature correction coefficients of the primary air and the secondary air are calculated through the temperature correction coefficients; the air leakage coefficient and the temperature correction coefficient are combined, and the corrected air leakage amount of the primary air leaking into the flue gas bin, the corrected air leakage amount of the primary air leaking into the secondary air and the corrected air leakage amount of the secondary air leaking into the flue gas bin are calculated.

The invention relates to the field of air pre-heater sealing, and discloses an automatic compensation type sealing device of an air pre-heater. According to the novel sealing device, the rotor can deform along with the change of the internal temperature of the air pre-heater so that the stable sealing effect can be automatically kept at any time, and the novel sealing device is composed of a sealing component, a driving component, a driving gear component and a compensation gear component. The sealing part is installed on one side of a radial partition plate of the air pre-heater through a fastener, and movement allowance is reserved in a sealing part installation hole. When the air pre-heater works in a hot state, the automatic compensation type sealing device of the air pre-heater provides compensation amount which is effectively complementary with a triangular air leakage area, effective dynamic compensation is achieved, operation is stable, and the air leakage rate is remarkably reduced. The sealing device is simple and reliable in structure, convenient to install, capable of facilitating overhaul and maintenance of the air pre-heater, high in overhaul efficiency and low in maintenance cost.

The invention provides a power supply coal consumption detection method and device for a coal-fired unit with a hot primary air heater. The method comprises the following steps: dividing a boundary for a heat balance system of the coal-fired unit with the hot primary air heater based on a preset rule; based on the heat balance system of the coal-fired unit after boundary division, the boiler fuel efficiency after air inlet temperature correction is determined; based on the steam turbine heat rate and the correction coefficient, the steam turbine heat rate after parameter correction is obtained; and determining the power supply coal consumption of the coal-fired unit based on the boiler fuel efficiency after the air inlet temperature correction, the steam turbine heat consumption rate after the parameter correction and the station service power consumption rate. The method can guide the detection and calculation of the power supply coal consumption of the coal-fired unit with the hot primary air heater, and provides technical reference for power plant personnel to carry out proper operation adjustment according to the data. And meanwhile, the economical efficiency of transformation of the hot primary air heater of the power plant can be evaluated, and the power plant is guided to carry out reasonable transformation evaluation and carry out reasonable parameter adjustment on the hot primary air heater.

Provided is an air-conditioning indoor unit. The air-conditioning indoor unit includes a plurality of centrifugal wind wheels, a motor drivingly connected to the plurality of centrifugal wind wheels, an electric control box disposed in an axial direction of the plurality of centrifugal wind wheels, and an evaporator disposed in a radial direction of the plurality of centrifugal wind wheels and obliquely disposed relative to a height direction of the air-conditioning indoor unit. By providing the plurality of centrifugal wind wheels and driving the plurality of centrifugal wind wheels by a same motor, when a size of the air-conditioning indoor unit is large, a constant air volume may be outputted. The electric control box is located in the axial direction of the centrifugal wind wheel and far away from the evaporator, to prevent the electric control box from being splashed by condensed water. In addition, since there is a large space when the centrifugal wind wheel is provided, the electric control box is located in the axial direction of the centrifugal wind wheel to more facilitate an arrangement of the electric control box. The evaporator is disposed obliquely relative to the air-conditioning indoor unit. In this way, a thickness of the air-conditioning indoor unit can be reduced, and heat exchange efficiency can be improved.

A heating system for use with a can dryer or oven includes a gas burner, an electrical heating element, a heating chamber structured to heat cans using air heated by the gas burner and / or the electrical heating element, a circulation system structured to move air from the gas burner and the electrical heating element to the heating chamber, and a control system structured to selectively control the gas burner and the electrical heating element to switch between a first mode where the gas burner and the electrical heating element are active and both heat air provided to the heating chamber and in a second mode where the gas burner is inactive and the electrical heating element is active.

The embodiment of the invention provides a foldable portable firewood stove, which belongs to the technical field of burners and comprises a base, a stove body and a stove head. According to the combustion structure, an air blower is adopted to pressurize and intake air, the air is preheated and then fed into the lower portion, the middle portion and the upper portion of the inner container through the first air inlet hole, the second air inlet hole and the third air inlet hole for combustion supporting, and fuel is subjected to incomplete combustion, dry distillation and gasification in the lower portion of the inner container in an oxygen-deficient state; the incompletely combusted flue gas is mixed with preheated high-temperature combustion-supporting gas at the upper part of the inner container for secondary combustion, the area of a fire outlet at the upper part of the inner container is reduced, the pressure of the fire outlet is increased, so that flames are jetted out, and the flame energy is converged. Particularly, after being stored, the whole appearance is regular to be a cylinder, outdoor packaging and carrying are convenient, the device can be used for outdoor cooking of 5-10 people, a cylindrical battery box with a replaceable battery is further designed, the battery is convenient to replace, the service time is prolonged, the whole device is designed to be light, and the total weight is smaller than 1300 g.

A bearing system for a rotatable shaft includes a bearing shaft (18) coaxial with the rotatable shaft, a bearing coaxial with the bearing shaft (18), a bearing housing surrounding the bearing and having a plurality of retention channels disposed axially along the bearing housing, and a dampening assembly comprising a plurality of circumferential seal elements disposed within each of the plurality of retention channels. A first subset of the plurality of seal elements is formed from a first material and a second subset of the plurality of seal elements is formed from a second material.

The invention relates to a power station boiler flue gas recirculation system and method.The system comprises a multi-path flue gas extraction module, at least three flue gas extraction openings are formed in a boiler main flue and located at a low-temperature reheater outlet, a coal economizer outlet and an air pre-heater outlet correspondingly; the flue gas purifying and mixing module comprises a cyclone separator, a carbon powder adding box and a spiral flow guide mixer which are connected in sequence; the waste heat cascade recovery module comprises a high-temperature-section steam generator, a medium-temperature-section film type air preheater and a low-temperature-section three-dimensional finned tube heat exchanger; the intelligent regulation and control module comprises a sensor group, a distributed control system and an optimization algorithm unit, the sensor group collects smoke components, boiler loads and coal quality parameters in real time, and the optimization algorithm unit outputs cooperative instructions of the recirculation rate, the air-coal ratio and the over-fire air door opening degree. Therefore, the problems that in an existing power station boiler flue gas recirculation technology, the path is single, waste heat recovery is insufficient, regulation and control are lagged, and pollutant control separation is caused are solved.

This invention discloses a boiler load adaptive regulation system based on solid thermal storage, relating to the field of power plant boiler combustion technology. The invention includes a boiler with an economizer arranged in its tail flue, and a flue gas extraction pipe connecting the boiler and the economizer. The end of the flue gas extraction pipe is connected to an ash separation component, the outlet of which is connected to the flue gas inlet of a solid thermal storage component, and the flue gas outlet of the solid thermal storage component is connected to the air preheater inlet. This invention extracts high- and medium-temperature flue gas from different locations in the boiler during rapid load reduction, stores the heat from the high-temperature flue gas using solid thermal storage technology, and releases the heat from the solid thermal storage component when rapid load increase is needed. This heat is then used to increase the primary air temperature and pulverized coal temperature through a heat exchanger, enhancing the combustion intensity of pulverized coal in the furnace. By reducing the amount of high-temperature flue gas in the boiler, the load change rate of the unit is effectively improved.

The embodiment of the invention discloses an air pre-heater air leakage rate detection method and device and a storage medium. The method comprises the steps that real-time operation parameters of an air pre-heater are obtained through a power plant control system; wherein the real-time operation parameters of the air pre-heater comprise the unit actual load, the air pre-heater outlet oxygen amount, the air pre-heater outlet smoke temperature, the air pre-heater inlet oxygen amount and the air pre-heater inlet smoke temperature; calculating the real-time air leakage rate of the air pre-heater based on the real-time operation parameters; and the real-time air leakage rate of the air pre-heater is compared with an air leakage degree judgment standard obtained based on historical data, and the current air leakage degree of the air pre-heater is determined. According to the technical scheme, the problem that an existing air pre-heater air leakage rate testing technology cannot achieve real-time monitoring and accurate prediction is solved, the real-time air leakage condition of a generator set in actual operation can be truly reflected, and the requirement of a power plant for real-time monitoring of the air pre-heater air leakage rate can be met.

The application discloses a boiler air preheater sector plate lifting system and relates to the technical gap lifting field.A laser gap control subsystem is used for collecting a gap signal value between a sector plate and a rotor flange face; a temperature control subsystem is used for collecting a flue gas outlet temperature; a lifting interval presetting subsystem is used for presetting a plurality of lifting intervals according to a set value; a direct lifting control subsystem is used for determining a direct lifting control strategy according to a relationship between the gap signal value and the lifting intervals; an indirect lifting control subsystem is used for determining an indirect lifting control strategy according to the flue gas outlet temperature when the laser gap control subsystem fails; and an execution control subsystem is used for controlling sector plate lifting to adjust a sealing gap according to the direct lifting control strategy / indirect lifting control strategy. Through the introduction of a multi-parameter fusion feedback mechanism, fine control is realized.

The utility model relates to the technical field of flue gas heat exchangers, and discloses a sealing device of a rotary flue gas heat exchanger, which comprises two fixing frames, the left side and the right side of the fixing frame on the rear side are both in threaded connection with two bolts I, and the front ends of the bolts I penetrate through the left side and the right side of the fixing frame on the front side; the device comprises two fixing frames, the interiors of the two fixing frames are fixedly connected with the same exhaust pipe, the interior of the fixing frame on the rear side is fixedly connected with a fixing plate, the rear side of the fixing plate is fixedly connected with fan blades, the interior of the fixing frame on the front side is fixedly connected with a heat exchange pipe, and the sides, away from each other, of the two fixing frames are fixedly connected with air conveying hoppers. The gas conveying pipe is externally connected with the gas conveying pipe, the mounting plate is arranged on the outer wall of the connecting pipe and fastened with the gas conveying hopper through bolts, rapid mounting and dismounting are facilitated, the sealing ring is embedded in the mounting plate, after the gas conveying pipe is inserted, the sealing ring is attached to the pipe wall, gas leakage is eradicated, and therefore the situation that equipment is affected by gas leakage is avoided, and working efficiency is improved.

A sliding member includes a cylindrical metal substrate, a seamless porous layer formed on the inner peripheral surface of the metal substrate, and a sliding layer covering the porous layer, wherein the porous layer is formed of a metal simple substance or an alloy composition, and the sliding layer is formed of a resin composition.

The present application provides a kind of energy-gathering disc pot rack and gas stove, it relates to the technical field of kitchen utensils, the energy-gathering disc pot rack includes energy-gathering disc body and support foot piece;Energy-gathering disc body is equipped with central through hole;Energy-gathering disc body is equipped with annular convex structure, the area between annular convex structure and the inner hole edge of central through hole forms secondary air preheating area.The gas stove includes energy-gathering disc pot rack.It relieves the technical problem that the existing gas stove exists in the combustion process, when the secondary air of lower temperature enters the central through hole of energy-gathering disc, there is diffusion to the gathering area of combustion heat energy air mass and heat exchange, reduces the temperature field of the gathering area of combustion heat energy air mass, so that the temperature of combustion flame is not high, causes heat energy loss, produces the technical problem of low combustion thermal efficiency, achieves the best effect of overall combustion condition, thereby improves the combustion thermal efficiency, and reduces the technical effect of CO exhaust emission.

A plate type gas-gas heat exchanger (400) comprises a casing (402) having a first end (402a) and a second end (402b). A first fluid inlet (404) and a second fluid outlet (410) are configured in a first portion (402a-1) and a second portion (402a-2) of the first end (402a). The first fluid inlet (404) receives a first fluid (F1). A second fluid inlet (406) and a first fluid outlet (408) are configured in a first portion (402b-1) and a second portion (402b-2) of the second end (402b) respectively. The second fluid inlet (406) receives a second fluid (F2). The first and second fluid outlets (408, 410) allows exit of the first and second fluids (F1, F2) respectively from the heat exchanger (400), after heat exchange. The first and second fluid (F1, F2) flow in opposite directions, creating a true counter-current flow pattern across an entire length of the heat exchanger (400).

The invention relates to the technical field of boiler heat energy recovery, in particular to an efficient heat energy recovery device for a boiler flue, the flue is provided with an air inlet section and an air outlet section, and the number of the heat energy recovery devices is at least two. The heat energy recovery device comprises a drainage pipe, an air heat exchanger is arranged in the drainage pipe, and the air heat exchanger is connected with an air inlet of the boiler; the first electromagnetic valve at the air inlet of the drainage pipe is opened, after high-temperature flue gas is injected into the drainage pipe, the first electromagnetic valve at the air inlet of the drainage pipe and the second electromagnetic valve at the air outlet of the drainage pipe are closed, and at the moment, the circulation channel is formed in the drainage pipe; due to the fact that heat of high-temperature flue gas is absorbed under the action of the air heat exchanger, circulating flow of the flue gas is formed according to the principle that hot air ascends and cold air descends, and heat in the flue gas is rapidly absorbed to the maximum extent.

The invention discloses a coal-fired unit power generation system with peak shaving capacity and a peak shaving method, and belongs to the technical field of thermal power generation. The system comprises a coal-fired power generation subsystem, a fused salt heat storage subsystem and a primary air heating subsystem; the coal-fired power generation subsystem comprises a boiler and a steam turbine generator set; the fused salt heat storage subsystem comprises a fused salt steam heat exchanger, a high-temperature fused salt tank, a low-temperature fused salt tank and a fused salt water supply heat exchanger; the primary air heating subsystem comprises a steam air heat exchanger. The peak shaving method comprises the steps that when the coal-fired unit power generation system operates at a low load or reduces the load, main steam exchanges heat with low-temperature fused salt, and part of heat is stored; steam at an outlet of the fused salt steam heat exchanger exchanges heat through the steam-air heat exchanger to reheat primary hot air of the boiler; when the load of the coal-fired unit power generation system rises, heat is released, and feed water is heated through the fused salt feed water heat exchanger. The peak regulation depth of the unit is greatly increased by extracting steam and storing heat and increasing the primary air temperature, and the output and combustion state of the low-load coal mill is improved.

The utility model provides an air pre-heater on-line pulse cleaning device which comprises a pipe frame and a medium pipeline, the pipe frame comprises a main pipe, and a nozzle is arranged on the main pipe; the pipe frame is provided with a multi-medium coupler, the multi-medium coupler is connected with the mother pipe, the multi-medium coupler is communicated with the medium pipelines, the multi-medium coupler is used for converging media provided by the medium pipelines, and one or more medium pipelines provide pulse media. The online pulse cleaning device for the air pre-heater has the advantages that the multi-medium coupler is fully and uniformly combined with various cleaning media through the impact force of the pulse media, the confluence effect when the cleaning media are mixed or coupled can be fully exerted, and the overall cleaning effect and cleaning efficiency are improved; and the cleaning media are converged near the nozzles and the mother pipe, so that the occupation of the external space of the air pre-heater is reduced, and the loss of more conveying pressure of the converged cleaning media (particularly pulse media) is avoided.

The utility model relates to the technical field of air pre-heaters, and discloses an automatic disengaging structure after air pre-heater motor fault, which comprises an electric slide rail component, the electric slide rail component comprises a slide rail body and a bottom plate arranged at the lower end of the slide rail body, the surface of the bottom plate is provided with a mounting hole, the slide rail body is connected with a slide block in a sliding manner, and the slide block is provided with a through hole. A connecting frame is fixedly installed at the upper end of the sliding block, limiting structures are arranged on the left side and the right side of the connecting frame, a motor is arranged on the connecting frame, a lubricating piece is further arranged on the outer side of the sliding block, the output end of the electric sliding rail component is connected with a permanent magnet coupler, a speed reducer is arranged on one side of the permanent magnet coupler, and the motor and the speed reducer are connected in a separable mode. In normal load operation, the motor end and the speed reducer end are in non-contact torque transmission, the function that the motor and the speed reducer are separated in the operation of the air preheater can be achieved, the electric sliding rail component drives the motor to move, the electric sliding rail component can automatically quit from being connected with the speed reducer, and it is avoided that motor faults affect rotation of the preheater.

The utility model relates to the technical field of research, development and design of preheating devices, in particular to a soot blower for an air preheater and the air preheater, which comprises an air cabin with an air chamber inside, a first through hole for compressed air to enter the air chamber is arranged at one end of the air cabin, and a second through hole for compressed air to enter the air chamber is arranged at the other end of the air cabin. A first through hole for compressed air to flow out from the air chamber is formed in one end of the air chamber, a second through hole for compressed air to flow out from the air chamber is formed in the other end of the air chamber, and the compressed air enters the air chamber from the first through hole and then flows out from the second through hole. In addition, the total cost of the whole air preheater is controlled, the economical efficiency of equipment is improved, maintenance and replacement are more convenient and faster, due to the fact that the number of formed parts is small, potential fault points are reduced accordingly, the soot blower is more stable and reliable during operation, and economic losses caused by equipment faults are reduced.