41results about "Steam superheaters" patented technology

In systems that control the amount of water vapor generated by electricity, damage to the water vapor generation unit is prevented. [Solution] The system comprises a steam generation unit 2 that generates steam from water by induction heating a spiral first conductor tube 21, a superheated steam generation unit 3 that generates superheated steam from steam by induction heating a spiral second conductor tube 31, a control unit 61 that controls the amount of steam generated by the steam generation unit 2 according to the amount of electricity supplied to the steam generation unit 2, and a safety device 12 that prevents damage to the steam generation unit 2 or the superheated steam generation unit 3 based on the pressure or temperature of the steam in the steam generation unit 2. The first conductor tube 21 has a spirally wound first winding tube section 21a, the second conductor tube 31 has a spirally wound second winding tube section 31a, and the safety device 12 is provided in the first winding tube section 21a, or in the connecting tube section CP that connects the first winding tube section 21a and the second winding tube section 31a.

The application discloses a kind of heating and processing device for fine slag fluid of pulverized coal gasification, belong to the field of fine slag fluid resource utilization of pulverized coal gasification, including main combustion chamber, secondary combustion chamber and shaft flue;Between main combustion chamber and secondary combustion chamber, and between secondary combustion chamber and shaft flue are provided with cyclone separator, the back material part of the cyclone separator is communicated with main combustion chamber, and energy recovery part is further provided in the shaft flue, and the energy recovery part is communicated with main combustion chamber, and the fuel of the main combustion chamber is the fine slag generated after pulverized coal gasification;The fine slag after pulverized coal gasification is burned by the main combustion chamber, and the energy in tail gas is recovered and filled into main combustion chamber for secondary use by energy recovery part;Secondary combustion chamber is simultaneously used to burn material again, to realize the resource utilization of fine slag after pulverized coal gasification, solid particles and gas are separated by cyclone separator, and solid particles are burned again in main combustion chamber, so that fine slag after pulverized coal gasification is burned more fully.

This invention discloses a system and method for improving the output of a linear Fresnel molten salt solar thermal power plant, comprising a low-temperature molten salt tank, a high-temperature molten salt tank, a medium-temperature molten salt buffer tank, a linear Fresnel solar collector field, a low-temperature temperature regulating pump, a medium-temperature temperature regulating pump, a low-temperature molten salt pump, and a high-temperature molten salt pump. During the power plant startup or low-irradiation phase, the medium-temperature molten salt at the collector field outlet that has not reached the target temperature is temporarily stored in the medium-temperature molten salt buffer tank to prevent the medium-temperature molten salt from mixing into the high-temperature molten salt tank and causing a decline in the quality of the high-temperature molten salt. During the high-irradiation phase, the qualified high-temperature molten salt is introduced into the high-temperature molten salt tank. Simultaneously, the medium-temperature molten salt in the buffer tank is mixed with the low-temperature molten salt from the low-temperature molten salt tank according to a calculated ratio, and after temperature adjustment, it is pumped back into the collector field for secondary heating to reach the qualified high-temperature molten salt. This ensures that high-quality superheated steam is provided to the turbine during peak irradiation periods, ultimately improving the annual power generation of the power plant, especially the unit's operating rate and output level in winter.

The utility model discloses a kind of overheat steam generators based on ultrasonic atomization, including the container of one end opening, ultrasonic atomizer being arranged in the container, mist heater being arranged in the open end of the container, the mist heater is communicated with outside atmosphere;The ultrasonic atomizer is atomized to raw water added in the container and generates mist;Mist heater is provided with porous channel and heating element coated in the outer wall of the porous channel, the mist in the container enters the porous channel and becomes overheat steam after being heated and is discharged.The device of the utility model can generate overheat steam under normal pressure, simple structure, low in cost.

The utility model relates to a boiler air preheater technical field discloses a kind of high-efficiency heat recovery type boiler air preheater. To solve the technical problem of the heat exchange efficiency of conventional air preheater in prior art is lower, especially when handling high-temperature flue gas, heat recovery is not sufficient. The boiler of the utility model includes hearth for fuel combustion to generate high-temperature flue gas, the outlet of hearth is sequentially provided with superheater, economizer and at least one air preheater along flue gas flow direction;Steam inlet end of superheater is connected with steam drum outlet, superheater outlet end is connected with superheated steam output pipeline, steam drum lower part is connected with hearth water-cooled wall, inlet of steam drum is connected with economizer, economizer feedwater inlet is communicated with water source, air preheater is located in downstream flue gas passage of economizer, air inlet of air preheater is connected with air supply fan. The utility model significantly increases heat exchange area and fluid residence time by wide channel design and S-shaped flow path, improves heat exchange efficiency.

The application belongs to the technical field of solar energy coupling jet-main cycle, and provides a solar energy coupling jet-main cycle system and a control method. According to the solar radiation intensity and scene demand, the solar energy direct heating mode, the solar energy coupling jet heating mode and / or the CO2 double-stage compression cycle heating mode are coupled to enter the combined working mode, so that the best working condition is ensured in the variable environment, and the maximum heating capacity is obtained with the minimum energy consumption. Through reasonable allocation of multiple working conditions, the application realizes multiple modes such as solar energy heating, CO2 double-stage compression heating, solar energy jet heating, solar energy jet CO2 coupling heating and the like.

To provide a superheated steam generation device using a three-phase AC power supply that effectively uses radiation of heat from a superheated conductor tube to improve thermal efficiency and reduces the influence that the superheated conductor tube is cooled by water or steam introduced from an introduction port.SOLUTION: A pre-heating conductor tube 3 has a first pre-heating conductor tube 31 and a second pre-heating conductor tube 32 that are arranged concentrically around a closed magnetic circuit iron core 2. The conductor tubes 31, 32, 4 are arranged in the order of the second pre-heating conductor tube 32, a superheated conductor tube 4, and the first pre-heating conductor tube 31 from the inside in a radial direction, and are connected in series in the order of the first pre-heating conductor tube 31, the second pre-heating conductor tube 32, and the superheated conductor tube 4. The second pre-heating conductor tube 32 has a spiral short circuit part 32X short-circuited in an axial direction. A superheated steam generation device introduces water or steam from an introduction port P1 provided in the first pre-heating conductor tube 31, and derives superheated steam from a derivation port P2 provided in the superheated conductor tube 4 through the second pre-heating conductor tube 32.SELECTED DRAWING: Figure 1

This utility model discloses a split-type superheated steam generator, relating to the technical field of steam generators. It includes a base, a housing and a water tank fixedly mounted on top of the base, a heating plate fixedly mounted inside the housing, a burner fixedly mounted at the bottom of the housing, a water pump fixedly mounted above the water tank, water pipes installed at both the inlet and outlet ends of the water pump, a heating box fixedly mounted above the housing, an electric heating assembly fixedly mounted inside the heating box, an air inlet at the lower end of the heating box, an air inlet pipe slidably mounted inside the air inlet, and an air outlet pipe fixedly mounted at the upper end of the heating box. This superheated steam generator adopts a split-type structure, with the entire device divided into mutually cooperating independent parts. Each component can be installed separately in different positions, eliminating the need to reserve excessively large space for the overall device. This improves overall performance through flexible space allocation, functional optimization, and ease of use.

This utility model relates to the field of backflushing technology for supercritical boilers, and particularly to a backflushing system for a high-temperature superheater and high-temperature reheater of a supercritical boiler. The backflushing system for a high-temperature superheater and high-temperature reheater of this utility model includes a reheater desuperheating water header, a main flushing pipeline, a first branch pipe, a second branch pipe, a high-temperature reheater, and a high-temperature superheater. One end of the main flushing pipeline is connected to the reheater desuperheating water header. One end of the first branch pipe and the second branch pipe are respectively connected to the other end of the main flushing pipeline. The other end of the first branch pipe is connected to the main steam outlet header of the high-temperature superheater, and the other end of the second branch pipe is connected to the outlet header of the high-temperature reheater. A filter pipeline is connected in parallel to the inlet header drain line of the high-temperature reheater, and a filter is installed on the filter pipeline. Advantages: The structure is reasonably designed, which can efficiently remove oxide scale, shorten the downtime maintenance cycle, reduce operation and maintenance costs, extend equipment life, and the whole process is safe and environmentally friendly.

To effectively use radiation of heat from a superheated conductor tube to improve thermal efficiency and reduce the influence that the superheated conductor tube is cooled by water or steam introduced from an introduction port.SOLUTION: A pre-heating conductor tube 3 has a first pre-heating conductor tube 31 and a second pre-heating conductor tube 32 that are arranged concentrically around a closed magnetic circuit iron core 2. The conductor tubes 31, 32, 4 are arranged in the order of the second pre-heating conductor tube 32, a superheated conductor tube 4, and the first pre-heating conductor tube 31 from the inside in a radial direction, and are connected in series in the order of the first pre-heating conductor tube 31, the second pre-heating conductor tube 32, and the superheated conductor tube 4. The second pre-heating conductor tube 32 has a spiral short circuit part 32X short-circuited in an axial direction. A superheated steam generation device introduces water or steam from an introduction port P1 provided in the first pre-heating conductor tube 31, and derives superheated steam from a derivation port P2 provided in the superheated conductor tube 4 through the second pre-heating conductor tube 32.SELECTED DRAWING: Figure 1

The utility model discloses a kind of waste heat recovery assemblies based on synthetic ammonia process, including cylinder, the cylinder is horizontally installed on base, the gas pipe of cylinder left side setting is successively connected steam superheater, waste heat boiler and boiler water heater, cylinder right side horizontally arranged steam exhaust pipe is connected the boiler water heater;Steam exhaust pipe is connected with the filter assembly of cylinder right side;The first gas pipe and second gas pipe are respectively communicated and arranged in the both ends of the cylinder;Grid plate is rotatably arranged in the cylinder, and cleaning assembly is installed on the cylinder.This device can efficiently recycle the waste heat in synthetic ammonia tail gas, and the built-in cleaning assembly can periodically and effectively clean the grid plate that guides flow uniform gas, ensure gas conduction effect;In addition, the filter element at the steam exhaust pipe of this device is very convenient to replace, significantly improves the maintenance efficiency of this device.

The utility model discloses a kind of superheat reheating systems suitable for cogeneration unit boiler, including hearth, horizontal flue and tail vertical shaft flue, steam drum or water-steam separator, ceiling superheater, wall outlet converging header, low-temperature superheater, screen superheater and high-temperature superheater are sequentially connected;Tail vertical shaft flue is divided into front flue and rear flue by middle partition wall, horizontal flue is divided into upper horizontal flue and lower horizontal flue by transverse partition wall, and a section of longitudinal flue gas baffle wall is equipped in lower horizontal flue middle part;High-temperature reheater and low-temperature reheater connected are equipped in front flue from top to bottom, and the low-temperature superheater is located in rear flue, and flue gas adjusting baffle is equipped in front flue and rear flue;The outlet of high-temperature superheater is connected with high-pressure cylinder steam inlet;High-pressure cylinder steam outlet is sequentially connected with medium-pressure cylinder steam inlet by low-temperature reheater, high-temperature reheater;The utility model can improve the heating capacity of unit low load, so that reheater front heating steam extraction volume is not limited by the safety of boiler reheater heating surface.

This application relates to a combined heat and power (CHP) system. The method includes a boiler, a power generation steam-water system, and a steam supply steam-water system. The boiler's head flue is connected to the power generation steam-water system; the boiler's tail flue is connected to the steam supply steam-water system; the boiler burns fuel to generate heat; the power generation steam-water system obtains feedwater for power generation; the feedwater is heated by the heat from the head flue to obtain steam for power generation; the steam for power generation drives the power generation steam-water system to generate electricity; the steam supply steam-water system obtains feedwater for power supply; after being heated by the heat from the tail flue, the feedwater undergoes flash evaporation in the steam supply steam-water system to obtain steam for power supply. This method can reduce energy waste.

The present application belongs to the technical field of energy saving and emission reduction in steel enterprises, and provides a comprehensive utilization and reconstruction method for energy saving and carbon reduction of traditional coal-fired power plants in self-provided power plants of steel enterprises, which realizes co-combustion of pulverized coal and coal gas through upgrading and reconstruction technology of boilers and steam turbines; the method of the present application actively responds to the national policy of "carbon peak and carbon neutralization", realizes the goal of energy saving and emission reduction and energy comprehensive utilization, meets the needs of sustainable development of enterprises, improves the operation efficiency of the unit, realizes coal saving and carbon reduction, effectively guarantees the normal consumption and emergency balance capacity of surplus coal gas of steel enterprises, realizes zero emission of coal gas, and reduces environmental pollution.

The application relates to a modular waste heat boiler, which is located between a waste gas pipe and an air outlet pipe. The waste heat boiler comprises a superheater module, an evaporator module, an economizer module and a steam drum. The superheater module comprises a plurality of shields. The corresponding pipeline and header tank of the superheater are installed in the space surrounded by the plurality of shields. The shield structure of the evaporator module and the economizer module is the same as that of the superheater module. The space surrounded by the corresponding shield of the superheater module is communicated with the waste gas pipe. The space surrounded by the corresponding shield of the economizer module is communicated with the air outlet pipe. The space surrounded by the corresponding shield of the evaporator module is communicated with the space surrounded by the corresponding shield of the economizer module and the space surrounded by the corresponding shield of the superheater module. The working medium side pipelines of the superheater module, the evaporator module and the economizer module are communicated with the steam drum. The application has the effect of shortening the time required for installing the waste heat boiler.

The utility model relates to the technical field of petroleum chemical industry especially, relate to a kind of production device of low-pressure superheated steam, the production device of low-pressure superheated steam includes, first heating furnace, the first heating furnace top is equipped with second heating furnace, the second heating furnace front end is equipped with exhaust pipe, discharging mechanism, the first heating furnace top is equipped with discharging mechanism, discharging mechanism can dynamically demand stable dosing reagent, both improve scale and corrosion prevention effect and reduce reagent waste, reduce the frequency that personnel contact reagent, purification mechanism, the second heating furnace top is equipped with purification mechanism, purification mechanism can effectively intercept dust, particulate impurities, oil stains and other pollutants in air, avoid its with airflow into heating furnace reduce the wear and tear risk of impurity to internal precision components of equipment;The utility model reaches the effect of energy saving and emission reduction by the cooperation of discharging mechanism and purification mechanism.

Provided in the present invention are a thermochemical heat-accumulation energy-storage heat supply system, and an energy-storage heat supply method. The heat supply system comprises a first steam buffer tank and a thermochemical heat accumulation device, wherein the thermochemical heat accumulation device comprises a decomposition reactor, a first bin, a synthesis reactor and a second bin, which are in communication in sequence from end to end; the thermochemical heat accumulation device is internally provided with a calcium-based material capable of being circularly conveyed, the decomposition reactor being provided with an energy supply device, and a circulation pipe of the first steam buffer tank being in communication with the synthesis reactor; and an inlet of the first steam buffer tank is in communication with the decomposition reactor by means of a first steam pipeline, and the inlet of the first steam buffer tank is in communication with the synthesis reactor by means of a second steam pipeline. By means of the present invention, the use of a conventional boiler is avoided, such that chemical heat-accumulation energy storage and heat supply can be carried out in a valley electricity period, heat supply can be carried out only by means of chemical heat release in a peak electricity period, and thus peak clipping and valley filling of electrical energy can be effectively carried out, thereby eliminating the problem of carbon emission of a conventional heat supply system, and facilitating a reduction in the electricity consumption cost.

The application provides a power generation device based on flue gas and steam cooperative coupling and a heat standby maintaining method. In the device, a flue gas coupling pipeline is arranged between the horizontal flue of each power generator set and the furnace of the remaining power generator sets, a steam coupling pipeline is arranged between the input end of the reheater and the input end of the deaerator of the remaining power generator sets, the output end of the superheater is connected with the input end of the reheater, the output end of the deaerator is connected with the high-pressure bypass main pipeline, the output end of the reheater is connected with the input end of the condenser, and the output end of the condenser is connected with the low-pressure bypass main pipeline. The device can keep the heat standby state of quick start when the power generator set is shut down, and has the advantages of short preparation time, low temperature fluctuation of heating surface, low temperature rise amplitude, small heat stress of start and stop, improved safety margin of start and stop process, and reduced operation risk caused by the constraints of minimum flow and temperature rise rate of the boiler.

The utility model discloses a kind of boiler reheater pipeline fixing mechanism, including lower mounting seat and upper mounting seat, the bottom of the inside one side of lower mounting seat is equipped with threaded rod, the outside of threaded rod is equipped with the inner thread sleeve of adaptation, the one side of lower mounting seat one end is equipped with handle, and the one end of handle extends to the inside of lower mounting seat and is equipped with the tooth plate of being interlocked with threaded rod, the inner thread sleeve is connected with upper mounting seat each other;The utility model is through the splicing structure of lower mounting seat and upper mounting seat, it is easy to separate and fold during assembly, promote two groups of first clamping seat and second clamping seat away or close, so as to adjust first and then fix according to assembly requirement, and using the sliding arrangement of guide rod and guide pipe, promote the position activity between first clamping seat and second clamping seat, to adjust quickly according to the spacing of U-shaped reheater pipeline, reach the installation and fixed operation of accurate pipe.

This invention discloses a waste heat boiler with integrated bypass function, comprising a waste heat boiler body and an internal flue gas direct passage. The waste heat boiler body is equipped with one or more stages of heat exchange tubes, through which high-temperature flue gas passes, exchanging heat with steam or boiler feedwater within the heat exchange tubes. One or more internal flue gas direct passages replace the external bypass; these passages pass through the middle of the heat exchange tubes; and their opening and closing are controlled by dampers. This invention offers the following advantages: because the flue gas direct passage is surrounded by hot flue gas, low-temperature conditions do not occur even with no flow, eliminating the problem of flue gas dew point corrosion. The waste heat boiler possesses a bypass function compatible with SCR denitrification, ensuring that flue gas emissions meet standards even when one waste heat boiler is switched off for maintenance, guaranteeing long-term stable operation of the unit.

The utility model relates to a boiler technical field, concretely is a kind of high -efficient coal powder boiler, it can effectively improve combustion efficiency, reduce the generation of NOx, and the residue quantity is small, it includes hearth, horizontal flue, turning chamber, rising flue and tail flue, it is characterized in that, the front wall water-cooled wall of hearth is provided with cyclone coal powder burner, the bottom of hearth is provided with ash cooling air system and furnace bottom pneumatic ash handling device, the top of hearth is provided with high-temperature superheater in the junction of horizontal flue, low-temperature superheater is provided in horizontal flue, upper group coal economizer is provided in turning chamber, SCR denitration device, air preheater one, lower group coal economizer, air preheater two are sequentially provided in tail flue from top to bottom.

This utility model relates to a superheated steam radiant waste boiler, belonging to the technical field of gasification waste heat recovery devices, and solves the problem that existing radiant waste boilers cannot efficiently produce stable superheated steam. Key technical points include: the main body of the radiant waste boiler includes a water-cooled wall connecting an upper collection box (steam-water outlet pipeline) and a lower collection box (boiler water inlet); an array of radially distributed water-cooled screens on the inner circumference of the water-cooled wall, including a saturated screen (whose upper / lower collection box connects to the upper / lower collection box to form a boiler water circulation path), a low-superheated screen (whose lower collection box connects to an external steam drum via a saturated steam inlet collection box, and whose upper collection box outputs low-superheated steam via a low-superheated steam outlet collection box), and a high-superheated screen (whose lower collection box receives low-superheated steam via a high-superheated steam inlet collection box, and whose upper collection box outputs superheated steam to the outside of the gasifier). This device is mainly used for waste heat recovery of high-temperature syngas and stable production of superheated steam in the gasifier system.

The application belongs to the field of metal welding materials, and discloses a gradient cladding layer for a superheater / reheater tube and a preparation method and application thereof. The gradient cladding layer comprises: forming a primer laser cladding layer on the superheater / reheater tube, forming an electric arc surfacing cladding layer on the primer laser cladding layer, and the electric arc surfacing cladding layer being directly contacted with a furnace atmosphere; the primer laser cladding layer comprises the following components: Ni: 30-40, Cr: 22-25, Mo: 5-8, Nb: 0.8-2, Si: 0.5-1, Mn: 0.5-1, and the balance of Fe, and the total is 100%; the electric arc surfacing cladding layer comprises the following components: Cr: 40-45, Fe: 16-19, Nb: 12-15, Mo: 8-10, Ti: 3-4, Al: 1.5-2.5, and the balance of Ni, and the total is 100%. The gradient cladding layer has excellent corrosion resistance and low stress, and meets the safe service of the superheater / reheater.

The application discloses a tail gas treatment system and process, wherein the treatment system comprises a pretreatment unit, a staged incineration unit, a synergistic purification unit, a gradient waste heat recovery unit and an intelligent control unit; the pretreatment unit, the staged incineration unit, the synergistic purification unit and the gradient waste heat recovery unit are sequentially connected, the input end of the pretreatment unit is connected with the tail gas pipeline inlet, the output end of the gradient waste heat recovery unit is connected with the chimney inlet; the pretreatment unit, the staged incineration unit, the synergistic purification unit and the gradient waste heat recovery unit are connected with the intelligent control unit. The technical effects are as follows: through the linkage of the intelligent control unit and each treatment unit, the real-time changes of tail gas components and emission indexes can be automatically adjusted, the operation parameters can be automatically adjusted, the treatment system has the advantages of high purification efficiency, high heat recovery efficiency, low equipment corrosion rate and strong self-adaptive capacity, and can be widely applied to the treatment of coal gas ethanol and other industrial tail gas containing sulfur and hydrocarbon.

The utility model discloses a kind of needle coke waste heat boiler's waste heat efficient recovery structure, more specifically in waste heat recovery technical field, including outer shell, the side of outer shell is through setting and has into smoke pipe, the inner wall of outer shell is fixedly provided with baffle, baffle divides outer shell into water cooling passage and water cooling flue, the inside of outer shell is provided with recovery mechanism, recovery mechanism includes high-temperature superheater fixedly set in the inner wall of outer shell, the top of high-temperature superheater is fixedly installed with low-temperature superheater, the top of low-temperature superheater is fixedly installed with first evaporator, the top of first evaporator is installed with second evaporator, the top of second evaporator is fixedly provided with constant-temperature water cooling hanging pipe.The utility model reduces high-temperature scouring pipe-bursting risk, and furthermore steam quality is promoted, constant-temperature water cooling hanging pipe controls thermal expansion, guarantees structure stability, stage efficient recovery flue gas waste heat, realize the full use of energy.

This invention discloses a small header structure and operating method for a 650℃ high-efficiency ultra-supercritical tower boiler, relating to the field of boiler technology. It solves the problem of reaching the upper limit of ferritic heat-resistant steel in the main and reheat steam outlet headers of tower boilers. The invention includes a main header, connecting pipes, a small header, and an outlet pipe joint. Each tube panel of the final stage superheater or reheater in the tower boiler is connected to a small header via an outlet pipe joint; the small header is connected to the main header via connecting pipes; the main header, connecting pipes, and small header are all made of iron-nickel-based high-temperature alloy materials. This invention, through the main and reheat steam outlet header and small header structure, can reduce inter-tube temperature deviation, effectively eliminating the thermal stress caused by inter-tube deviation in conventional large header schemes. It can also reduce the wall thickness of the main header, as thermal stress is proportional to wall thickness, thus reducing thermal stress, improving compressive strength, and facilitating flexible operation.

A superheated steam generator that controls the amount of generated steam, on the basis of the amount of electric power, includes: a steam generation unit that generates steam by inductively heating a spiral-shaped first conductor pipe; a superheated steam generation unit that generates superheated steam by inductively heating a spiral-shaped second conductor pipe; a control unit that controls an amount of generated steam based on an amount of supplied electric power; and a safety device that prevents damage to the steam generation units, based on a pressure or a temperature of the steam, in which the first conductor pipe has a first winding portion that is a spiral winding; the second conductor pipe has a second winding portion that is a spiral winding; and the safety device is provided to the first winding portion, or to a communication pipe part connecting the first and second winding portions.

This invention discloses a fly ash treatment system and method. The fly ash treatment system includes: a waste heat boiler; a dust collector; and a steam injection device connected to the waste heat boiler and the dust collector via pipelines to inject second steam into the dust collector. The fly ash treatment device includes a water-sealed screw conveyor for receiving cooling water and inert gas; a control unit for acquiring the temperature and internal pressure of the water-sealed screw conveyor; and adjusting the operating parameters of the water-sealed screw conveyor according to the temperature and internal pressure. The second steam injected into the dust collector by the steam injection device keeps the fly ash dry and loose. The cooling water in the water-sealed screw conveyor forcibly cools the fly ash and breaks up any agglomerates through the screw blades. The inert gas keeps the fly ash in a flowing state, thereby effectively preventing fly ash from accumulating and clogging due to excessive temperature or abnormal pressure during the fly ash transportation process, thus improving the smoothness of fly ash transportation.

The utility model belongs to the technical field of boiler superheater, concretely is a kind of boiler superheater convenient to clean inside, including air inlet pipe;The bottom pipe is communicated at air inlet pipe top, the bottom pipe top is communicated with multiple pipes, the pipe top is communicated with top pipe, and the top pipe top is communicated with air outlet pipe, the pipe middle part is slidably connected with scraper, the scraper top is fixedly connected with pull rope, the pull rope is slidably connected with top pipe, and the bottom pipe front side is hinged with movable plate, pull rope is loosened, let scraper slide down along pipe, and the impurities adhered in the pipe are scraped by scraper, dust and debris fall to the bottom of bottom pipe, open movable plate to clean dust and debris inside, can, after cleaning, pull pull rope, and put scraper to the top of pipe, stay in top pipe, so it will not block pipe, affect pipe transmission gas.

The application discloses a coal-fired boiler variable load process energy efficiency evaluation method and related device, relates to the technical field of boiler energy efficiency evaluation, and comprises the following steps: acquiring real-time monitoring data in a transient variable load process of a boiler and performing pretreatment; based on the pretreated real-time monitoring data, further determining a main steam outlet enthalpy, a feedwater enthalpy, a reheated steam outlet enthalpy and a reheated steam inlet enthalpy; then, according to each group of data at different moments in the transient variable load process of the boiler, determining a load-instantaneous efficiency curve and a load-time average efficiency curve; finally, calculating a deviation area of the load-time average efficiency curve and a load-efficiency curve under a stable working condition of the boiler, and calculating a fluctuation degree of the load-instantaneous efficiency curve, and evaluating the energy efficiency of the boiler in the transient variable load process based on the deviation area and the fluctuation degree. The application can realize energy efficiency evaluation of the transient variable load process of the boiler.