1626results about "Chimneys" patented technology

The invention relates to a self-adaptive power plant combustor and an adjusting system thereof. A combustion chamber shell of the combustor is internally provided with a combustion cavity and wrapped with an air bin, the air bin is connected with the combustion cavity through an inclined air hole, one end is provided with a smoke exhaust pipeline and a fan, the other end is provided with a sealing cover with an igniter and a gas distribution chamber, and the upper end is provided with a pulverized coal distribution bin and a powder spraying hole. The adjusting system comprises a temperature and pressure sensor, a controller and an executing mechanism. The advantages are obvious, the air holes and the fuel gas holes are specially designed, and related parts of the pulverized coal distribution bin enable fuel to be fully mixed and combusted; the adjusting system accurately regulates and controls combustion parameters; the service life of the equipment is prolonged by a heat-insulating layer, high-temperature-resistant and The smoke purification device reduces pollution; and intelligent management is realized through remote monitoring. And the combustion efficiency and stability are effectively improved, and efficient and clean utilization of power energy is assisted.

A method of recovering carbon dioxide from flue gases of a plurality of carbon dioxide emitters (1, 2, 3, 4) of a process plant network (100) is proposed, wherein the carbon dioxide emitters (1, 2, 3, 4) comprise individual flue gas ducts (11) operated at individual flue gas duct pressures, wherein each of the individual flue gas ducts (11) is connected via a pressure maintaining valve (13) to a common flue gas collecting duct (10), wherein each of the individual flue gas ducts (11) is connected via a flue gas flap (14) to an individual or common flue gas release unit (15), wherein the flue gas collecting duct (10) is connected to a carbon dioxide removal arrangement (20) including a flue gas blower (21), wherein the method comprises controlling flue gas duct pressures in the individual flue gas ducts (11) by operating the pressure maintaining valves (13) using flue gas duct pressure set values, the flue gas duct pressure set values corresponding to pressures required to release the respective flue gas via the individual or common flue gas release unit (15) at an opened state of the respective flue gas flap (14) to the atmosphere, and wherein the method further comprises adjusting a pressure in the flue gas collecting duct (10) by operating the flue gas blower (21). A process plant network (100) is also proposed.

A fire safety system, comprising a first-level fire-fighting unit (11) and a second-level fire-fighting unit (12), wherein the first-level fire-fighting unit (11) cooperates with the second-level fire-fighting unit (12) to perform safety protection on batteries of the entire energy storage device, thereby improving the safety of the entire energy storage device, and solving the problems of the treatment effects of fire safety measures for existing energy storage devices not being ideal and the energy storage devices having safety hazards. Further disclosed are a centralized fire safety system, an energy storage device, and an energy storage system.

The invention discloses an air preheating biomass boiler, belongs to the technical field of boilers, and aims to solve the problems of low combustion efficiency, insufficient flue gas waste heat utilization and particulate matter emission of a traditional biomass boiler. Function optimization is achieved through a main body structure composed of a furnace body, a charging barrel and a rotating pipe, a double-spiral-disc heat exchange assembly is arranged in the charging barrel, biomass fuel is preheated through boiler exhaust smoke waste heat, meanwhile, smoke is discharged through exhaust holes after being distributed through spiral disc gas storage cavities, and unburned particles are filtered by a biomass layer and carried to a hearth to be subjected to secondary combustion; an air inlet cavity is formed in the rotating pipe, and air is preheated through the fixed pipe and the first connecting pipe and then input into the hearth. The exhaust assembly adopts a sliding rod and sealing block matched structure, and a convex block mechanism driven by a rotating pipe drives the sealing block to periodically move, so that gas in the charging barrel is intermittently exhausted through a double-layer filter screen. According to the boiler, the heat efficiency is improved through a smoke-air two-way preheating and particulate matter secondary combustion mechanism, and the biomass preheating, air heating and emission treatment process is optimized.

The present invention relates to the field of gas water heaters, in particular to a smoke exhaust pipe. The smoke exhaust pipe comprises a pipe body, a mounting part is inserted into one end of the pipe body, a rainproof pipe is sealingly connected to the mounting part, and an outer end opening of the rainproof pipe is inclined downward. The smoke exhaust pipe provided by the present invention has the advantages of being convenient to mount and having a good rainproof effect.

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 relates to a combinable chimney device which comprises a first barrel body, a second barrel body is installed on the top of the first barrel body, a rainproof plate is arranged on the top of the second barrel body, and a dismounting mechanism is arranged outside the first barrel body. And the dismounting mechanism comprises clamping blocks, clamping grooves, limiting rods, anti-falling blocks, baffles, containing grooves, electric push rods, inserting rods and clamping columns, the clamping blocks are fixedly installed at the bottoms of the first barrel and the second barrel, the clamping grooves are formed in the first barrel, and the limiting rods are arranged outside the second barrel. According to the combined chimney device, firstly, a clamping block at the bottom of a second barrel is clamped into a clamping groove of a barrel, so that the first barrel and the second barrel are preliminarily fixed and stable, then a baffle is rotated, an anti-falling groove of the baffle is clamped with a clamping column, and finally an electric push rod is started to push an insertion rod to move downwards to enter a positioning groove, so that the clamping column can be prevented from falling off; and therefore, the first barrel body and the second barrel body are further locked.

The invention discloses a gas water heating device which comprises a combustion device, a first heat exchanger and a second heat exchanger which are sequentially arranged. The fan is used for driving high-temperature flue gas generated by the combustion device to sequentially flow through the first heat exchanger and the second heat exchanger; the atomization treatment device communicates with an inner cavity of the second heat exchanger, condensate water generated in the second heat exchanger can flow into the atomization treatment device, and the atomization treatment device is used for treating the condensate water to generate condensate water mist; the drainage channel is used for introducing flue gas before flowing into the second heat exchanger and / or flowing through part of the second heat exchanger into the atomization treatment device; the atomization treatment device is communicated with a smoke exhaust pipe of the gas water heating device, and condensate water mist can flow to the smoke exhaust pipe along with smoke in the atomization treatment device. According to the device, a condensate water discharge pipe can be omitted, and secondary condensation of condensate water mist in the discharge process can be prevented through heat of smoke.

The utility model relates to the technical field of boilers, in particular to a flue gas turbulent flow assembly for a boiler, which comprises a turbulent flow pipe, a flue gas turbolator is mounted in the turbulent flow pipe, positioning devices are detachably mounted at two ends of the turbulent flow pipe, the flue gas turbolator is of a spiral structure formed by twisting a thin plate, and the positioning devices are mounted at one end of the turbulent flow pipe. According to the flue gas turbulent flow assembly for the boiler, through the unique design, the heat exchange efficiency is improved, meanwhile, flue gas resistance is not excessively increased, and the overall performance of the boiler is remarkably improved. Specifically, due to the spiral structural design of the flue gas turbolator, the laminar flow state of flue gas is effectively broken, the turbulence degree of the flue gas is enhanced, and therefore the heat exchange efficiency is improved. Meanwhile, due to the fact that the length of the smoke turbolator is smaller than that of the turbulent flow pipe, the smoke turbolator is only arranged in part of the area, and therefore it can be guaranteed that the heat exchange efficiency is improved, and smoke resistance cannot be excessively increased.

The invention relates to a thermal power plant boiler flue gas waste heat recycling system, and belongs to the technical field of boiler flue gas waste heat recycling. The flue gas waste heat recycling system for the boiler of the thermal power plant comprises a smoke exhaust pipe; a cleaning module and a heat exchange assembly are sequentially arranged in the smoke exhaust pipe in the smoke inlet direction. According to the flue gas treatment device, flue gas can be treated in a centralized mode under the action of the cleaning module, heat loss can be reduced in the treatment process, follow-up heat exchange operation is facilitated, and smoke dust in the cleaned flue gas can be intercepted in a connecting ring and independently discharged through a discharging structure; flue gas flows to drive a driving blade to enable a rotating ring to rotate, then a rotating shaft is driven to enable a second spiral conveying plate to rotate, smoke dust guided into a fixing pipe is conveyed and discharged, the cleaning difficulty is reduced, meanwhile, the smoke dust adhering to the surface of the driving blade can be cleaned under the combined action of a knocking ball, a mounting rod, the rotating shaft and a clockwork spring, and the practicability is high. And the cleaning effect is effectively improved.

The utility model discloses a fiber reinforced smoke exhaust pipe structure which comprises a smoke exhaust pipe main body, an electromagnetic valve is started to inject clear water into a water tank through a liquid changing pipe, smoke enters the smoke exhaust pipe main body and then is subjected to heat insulation work through a fiber reinforced layer, and a suction pressurization mechanism is started to suck smoke into the water tank through an air inlet mechanism. Smoke is primarily adsorbed and purified through clear water, flows back into the smoke exhaust pipe body through the exhaust assembly to flow upwards, is secondarily adsorbed and purified through the filtering and adsorbing assembly, and is pulled to slide along the inner wall of the limiting sliding groove to be separated from the smoke exhaust pipe body, and then cleaning and replacing work can be conducted. The aims of enhancing the heat insulation and heat resistance strength of the smoke exhaust pipe and automatically purifying and treating the smoke are achieved, and the problems that the heat insulation effect of the smoke exhaust pipe is gradually reduced and the surrounding environment and human health are damaged after the smoke is exhausted due to the fact that a heat insulation coating of an existing smoke exhaust pipe is aged and damaged and the smoke is difficult to automatically purify and treat are solved.

The utility model discloses a smelting furnace rotary flue sealing structure which comprises a rotary flue body, an upper protective cover is installed on one side of the outer wall of a sealing connecting pipe in a sleeved mode, a positioning splicing block is fixedly connected to the edge of the outer wall of the upper protective cover, and a lower protective cover is installed on the other side of the outer wall of the sealing connecting pipe in a sleeved mode. And the edge of the outer wall of the lower protective cover is fixedly connected with a positioning splicing groove. According to the smelting furnace rotary flue sealing structure, spiral and flange double fixation can be conducted between the rotary flue body and the sealing connecting pipe through a first flange plate, a second fixing bolt, a second flange plate, a mounting threaded groove and a mounting threaded block, mounting is stable, and double-layer sealing treatment can be conducted through a sealing buckling block and a sealing buckling groove; the sealing effect is good, the metal spring pipe structure of the sealing connecting pipe can be adjusted in a telescopic mode, movement is stable, the sealing connecting pipe can be supported and wrapped through the upper protective cover, the lower protective cover and the protective cushion block, the protection effect is good, and damage is avoided.

The utility model relates to an air curtain type flue gas baffle device which is characterized in that an air curtain frame and a baffle frame form a whole, and the wall of the frame is flush with the wall of a flue; the air curtain is fixed on the air curtain frame, and the whole air curtain frame is filled with the air curtain after the air curtain is inflated and expanded; the baffle is connected with the connecting rod and reciprocates in the track groove of the baffle frame under the push-pull action of the connecting rod; the air curtain is arranged in front of the baffle in the direction of smoke flow in the flue. The air curtain baffle door has the advantages that the baffle plate can be sealed by the air curtain capable of being inflated and deflated, and compared with a traditional baffle door, the baffle plate does reciprocating motion in the baffle plate frame, and a complex locking device is not needed.

The condensation type heat exchanger comprises a shell, a heat exchange device and a fuel gas combustion device, and a water inlet cavity, a water outlet cavity, a water collecting cavity and an exhaust channel are formed in the shell; the heat exchange device is arranged in the shell, an airflow channel exists between the heat exchange device and the shell, the heat exchange device comprises a first heat exchange structure and a second heat exchange structure which are arranged side by side, each of the first heat exchange structure and the second heat exchange structure comprises at least two heat exchange coils, and all the heat exchange coils are arranged in the shell side by side in the axial direction of the heat exchange coils. The water inlet cavity is communicated with a first connector of the heat exchange coil pipe of the second heat exchange structure, the water collecting cavity is communicated with a second connector of the heat exchange coil pipe of the second heat exchange structure and a second connector of the heat exchange coil pipe of the first heat exchange structure, and the water outlet cavity is communicated with a first connector of the heat exchange coil pipe of the first heat exchange structure. According to the condensation type heat exchanger, the overall water resistance can be lower while it is guaranteed that the overall heat exchange efficiency is high, and the water pressure drop amplitude of water passing through the condensation type heat exchanger is reduced.

The utility model discloses a flue structure of a gas water heater, which relates to the field of flue structures and comprises a straight pipeline, a check valve is mounted at the end of the straight pipeline, a push rod is slidably mounted at one end, close to the check valve, of the inner wall of the straight pipeline, and two ends of the push rod directly face two valve plates of the check valve respectively. According to the flue structure of the gas water heater, the straight pipeline is provided with the push rod and the push assembly, and when a valve plate of a check valve cannot be normally opened due to adhesion when the gas water heater is not used for a long time, the push assembly can be operated to drive the push rod to push the valve plate of the check valve under the condition that the straight pipeline and the check valve are not disassembled, so that the valve plate of the check valve can be normally opened; compared with a traditional method, the smoke exhaust device has the advantages that operation is more convenient, and the problem of adhesion of the valve plate is better solved.

The invention discloses a boiler flue gas waste heat recovery and utilization system which comprises a boiler barrel, one end of the boiler barrel is communicated with a front smoke box, the other end of the boiler barrel is communicated with a rear smoke box, one end of the front smoke box is fixedly provided with a combustor, a combustion opening of the combustor is communicated with a hearth, and the hearth is fixedly installed in the boiler barrel. A transition smoke box is installed at one end of the hearth in a communicating mode, a first return pipe is installed between the transition smoke box and the front smoke box in a communicating mode, and a second return pipe is installed between the front smoke box and the rear smoke box in a communicating mode, so that smoke enters the rear smoke box along the second return pipe and is exhausted from a first smoke exhaust pipe. And the second smoke exhaust pipe exhausts the smoke into the waste heat recovery mechanism. Through the design of the waste heat recovery mechanism, exhausted smoke is used for heating sucked air, high-temperature air is mixed with coal, more sufficient oxygen can be provided when the coal is combusted in the hearth, and the combustion reaction is more complete.

The utility model relates to the technical field of medical waste treatment, in particular to a medical waste treatment environment-friendly device which comprises a motor bin, a motor gear is fixedly connected to one section of a motor rotating shaft, teeth of the motor gear are meshed with teeth of a driven gear, a crushing bin is fixedly connected with a combustion bin, and four supports are fixedly connected to the top end of the combustion bin. The top end of the support is fixedly connected with a fuel bin, the end, away from the crushing bin, of the fuel bin is fixedly connected with a gas filtering bin, the top end of the deodorization bin is provided with a through hole, and the through hole is fixedly connected with an exhaust assembly. The volume and the weight of the incinerated medical waste are greatly reduced, waste gas generated after incineration is discharged after being filtered by the denitration bin, the desulfurization bin and the deodorization bin, and if the gas does not meet the emission standard, the gas is filtered again until the gas meets the emission standard.

The utility model relates to the technical field of gas water heaters, and discloses a gas water heater which comprises a whole machine shell, a gas inlet pipe and a gas outlet pipe. The main board is used for supplying power to the electric components; the power supply is used for supplying power to the mainboard; the smoke exhaust pipe comprises an inner-layer smoke pipe and an outer-layer smoke pipe, the inner-layer smoke pipe comprises a thermoelectric power generation sheet, the thermoelectric power generation sheet is connected with a power supply, the inner side of the inner-layer smoke pipe forms a smoke exhaust channel, the smoke exhaust channel is communicated with the whole machine shell, the outer-layer smoke pipe surrounds the inner-layer smoke pipe, an airflow channel is formed between the outer-layer smoke pipe and the inner-layer smoke pipe, and the outer-layer smoke pipe is provided with an air inlet hole; the gas water heater does not need to be externally connected with a mains supply, during power failure, electricity stored by the power source can be supplied to the main board, the main board supplies electricity to all electric components, the gas water heater can be normally ignited for use, and in the normal use process of the gas water heater, the gas water heater is not prone to being damaged. And the power generated by the thermoelectric power generation sheet continuously charges the power supply.

The utility model relates to the technical field of denitration devices, in particular to dust removal and gas mixing integrated equipment for a denitration device, which comprises a boiler tail flue and a T-shaped flue. The T-shaped flue comprises a horizontal flue and a vertical flue vertically communicated with the horizontal flue, a smoke inlet of the horizontal flue is communicated with a smoke outlet of a tail flue of the boiler, one or more flue wind speed balance baffles are arranged in the horizontal flue, and a smoke outlet of the vertical flue is communicated with the denitration device; a strip-shaped grid fluid director is arranged at a connecting port of the vertical flue and the horizontal flue, one or more baffling dust removers are arranged in the horizontal flue below the strip-shaped grid fluid director, and the horizontal flue is connected with an ash storage bin below the baffling dust removers; and an ammonia spraying grid and a plurality of wind wheel ammonia mixers are arranged in the vertical flue above the strip-shaped grid fluid director. By using the integrated equipment, the flue gas can be effectively dedusted and uniformly mixed with ammonia before entering the denitration device.

The utility model relates to a condensation type gas water heater which comprises an outer shell, a combustion chamber, a heat exchange chamber and a condensation chamber, the combustion chamber, the heat exchange chamber and the condensation chamber are arranged in the outer shell, and a water collecting box is arranged below the condensation chamber and used for collecting condensate water formed in the condensation chamber. An atomizing nozzle is arranged above the condensing chamber, is communicated with the water collecting box through a water pipe fitting and is communicated with an air pump through an air pipe fitting; after the air pump is started, high-pressure gas is formed and conveyed into the atomizing spray head through the air pipe fitting, negative pressure formed in the atomizing spray head provides power for the condensed water to be sucked into the atomizing spray head, and the condensed water is impacted and scattered into mist by the high-pressure gas and then discharged outdoors along with smoke; according to the condensate water treatment mode, a pipeline and a device for discharging and treating the condensate water do not need to be designed, the whole machine is small in size and convenient to install, in addition, the condensate water is treated in time, and the problems that the condensate water is frozen in a low-temperature state in winter and the like can be solved.

The utility model relates to the technical field of outdoor gas water heaters, and discloses a smoke exhaust hood structure which comprises an installation face, a smoke exhaust hood body and a smoke exhaust hood body. The cover body is connected to the mounting surface and comprises a top cover and a side cover; the top end of the side cover is connected with the edge of the top cover in a surrounding manner, the bottom end of the side cover is connected with the mounting surface in a surrounding manner, and the top cover, the side cover and the mounting surface are matched to form a smoke exhaust cavity communicated with the smoke outlet; the side cover is provided with a plurality of smoke outlets; and the buffering structure is provided with a flow guide face aligned with the smoke outlet, and the flow guide face is connected with the bottom end of the top cover and used for conducting flow guide buffering on smoke exhausted from the smoke outlet. According to the utility model, the flue gas flow path can be adjusted, the flue gas can be buffered, and the direct collision between the flue gas and the top cover during high-power work can be effectively reduced, so that the flue gas discharge resistance is reduced, and the flue gas discharge efficiency is improved.

The utility model provides a biomass boiler flue gas temperature control device which comprises a boiler smoke exhaust pipe, a mounting plate, a temperature adjusting structure, a temperature detection area, an upper end extension pipe and a flue gas exhaust port, and the mounting plate is fixedly mounted at the lower end of the boiler smoke exhaust pipe and connected to a biomass boiler; the temperature adjusting structure is fixedly installed at the upper end of a boiler smoke exhaust pipe, the temperature detection area is fixedly installed at the upper end of the temperature adjusting structure, and the upper end extension pipe is fixedly installed at the upper end of the temperature detection area. The flue gas exhaust port is fixedly mounted at the top of the upper end extension pipe; due to the arrangement of the temperature adjusting structure and the flue gas exhaust port, the temperature of exhausted flue gas can be rapidly detected, and the temperature of the flue gas can be rapidly reduced.

Disclosed is a hydro furnace (100, 200) comprising: combustion chamber (102, 202) comprising first flue gas outlet (110, 212) and second flue gas outlet (112, 214); inner flue gas pipe (104, 204) having first end (114, 222) and second end (116, 224), first end being connected to first flue gas outlet, inner flue gas pipe further comprising multiple pipes (118a, 118b, 118c, 118d, 118e, 118f, 226), each of multiple pipes comprising third end (120, 228) and fourth end (122, 230), and being arranged to cross through inner flue gas pipe; liquid jacket (106, 234) surrounding at least partially combustion chamber and inner flue gas pipe, liquid jacket comprising liquid inlet (124, 220) and liquid outlet (126, 240), wherein third and fourth ends of multiple pipes are connected to liquid jacket; and bypass flue gas pipe (108) having fifth end (128) connected to second flue gas outlet and sixth end (130).

The invention relates to the technical field of metallurgical equipment, and discloses a horizontal waste heat boiler and an anti-slagging optimization method and system.The system comprises an uptake flue, a radiation chamber, a convection chamber, an ash hopper, a baffle, a heat exchange tube panel, a sieve pore baffle and a streamline baffle; the method comprises the steps that a horizontal waste heat boiler numerical simulation model is built, and a baffle, a heat exchange tube panel and other components are subjected to model building according to the equal proportion of 1: 1; grid division is carried out on the built horizontal waste heat boiler numerical simulation model, and local flow characteristics and temperature distribution are captured; a multiphase mass point grid method is used, gas phase motion is described by adopting a volume average Navier-Stokes equation under an Euler framework, and particle motion is tracked by adopting a Newton second law under a Lagrange framework; and selecting a value simulation model and a value simulation method suitable for the gas-solid two-phase flow and heat exchange process of the waste heat boiler. The heat exchange capacity of the waste heat boiler is improved; the recovery rate of smoke particles is increased; and slagging of parts in the waste heat boiler is reduced.

The invention relates to the technical field of pipeline installation, in particular to a smoke prevention and exhaust air pipe installation process based on multi-dimensional data monitoring, which comprises the following steps of: hoisting a smoke prevention and exhaust air pipe at a preset place according to a drawing, and judging whether the smoke prevention and exhaust air pipe has an abnormal risk or not based on a comparison condition among gray level fluctuation parameters of each monitoring area; and determining a vibration fluctuation curve of each stress observation point of the smoke prevention and exhaust air pipe in the hoisting process, carrying out synchronous vibration analysis to judge the abnormal tendency category of the smoke prevention and exhaust air pipe, and determining to add a hoisting point in the air pipe characteristic region based on the abnormal tendency category, or marking a defect risk region based on a gray level fluctuation parameter and sending out an early warning. According to the method, whether the abnormal risk exists or not is rapidly recognized according to the surface image of the smoke prevention and exhaust air pipe, the installation parameters of the smoke prevention and exhaust air pipe are adaptively adjusted according to synchronous vibration analysis of all stress observation points, and the installation process precision and installation efficiency of the smoke prevention and exhaust air pipe are improved.

A non-return valve for a flow channel has a housing and an outflow opening that can be closed by a pivoting blocking flap. The blocking flap has a dome-shaped bulge. An opening edge of the outflow opening has a hinge region for the blocking flap that transitions into a blocking flap stop region circumferentially opposite the hinge region. The blocking flap stop region is offset so that the opening edge has a progression that is curved in the circumferential direction and in the outflow direction. The housing has an indentation in the circumferential direction, which is not closed by the blocking flap such that the indentation forms a condensate chamber when the housing is inserted into the surrounding flow channel. The indentation is equipped with a flow opening, through which a condensate accumulating in the condensate chamber delimited by the indentation can flow in the interior of the housing.

The invention relates to an air cap, an air cap structure and a flue system, and aims to further optimize the structure of the air cap. The air cap is installed on the top of a flue of a building and comprises a base, a top cover and an annular fan unit, a first cavity is formed in the annular fan unit, the annular fan unit is located between the top cover and the base, the annular fan unit can rotate relative to the base, and the air cap is characterized in that an installation channel is formed in the top cover, and the first cavity is communicated with the installation channel. The base comprises a mounting ring, a supporting seat extending outwards is arranged at the bottom of the mounting ring, a second cavity used for communicating a flue with the annular fan unit is formed in the mounting ring, an air guide inlet and an air guide outlet are formed in the second cavity, and the second cavity communicates with the first cavity through the air guide outlet; and the base is arranged on the mounting ring, a mounting hole is formed in the base, and the projection of the mounting hole on the horizontal plane is located in the mounting channel.

The chimney anti-corrosion structure comprises an outer cylinder and a steel inner cylinder, an anti-corrosion layer is arranged on the inner circumferential face of the steel inner cylinder, the anti-corrosion layer sequentially comprises a framework, a primer layer, foam glass bricks and a protective layer from inside to outside, the framework is installed on the inner circumferential face of the steel inner cylinder, and a plurality of brick lattices are formed between the framework and the steel inner cylinder. The primer layer and the foam glass bricks are sequentially arranged in the brick lattices, and the protective layer is arranged on the outer sides of the framework and the foam glass bricks. According to the anti-corrosion structure, the framework serves as an installation foundation of the foam glass bricks and plays a role in supporting and fixing the foam glass bricks, and the foam glass bricks have the advantages of being resistant to chemical corrosion, resistant to high temperature, excellent in heat insulation performance, resistant to temperature change, light in weight, low in volatilization, safe to construct, long in service life, resistant to fire disasters and beneficial to relieving chimney rain. Construction is simple, and corrosion resistance is high.

The utility model provides an exhaust fume collecting hood and gas water heating equipment comprising the exhaust fume collecting hood. The smoke collecting hood comprises a hood shell used for collecting smoke, a smoke exhaust pipe extending upwards from the hood shell, and a baffle assembly fixedly contained in the smoke exhaust pipe. The baffle assembly comprises a support fixedly installed in the smoke exhaust pipe, a rotating shaft arranged on the support and a pair of baffles which are arranged on the rotating shaft in a pivoted mode and can be opened and closed. The support is further provided with a limiting piece which extends upwards and abuts against the pair of baffles when the pair of baffles are clamped so as to limit the minimum clamping angle between the pair of baffles. By arranging the limiting piece, the baffle cannot cross the rotating shaft to be overlapped with the baffle on the other side after being blown up, and therefore the baffle can smoothly fall back to the original closing position.

The present invention discloses a garbage power generation combustion device and process, in which a cyclone separator I is used to separate and purify the flue gas once after the grate furnace, and the separated solids enter the slag bin. The flue gas after the primary separation and purification enters the heat exchange flue gas duct for heat exchange, thereby fully utilizing the waste heat of the flue gas. In addition, the flue gas is directly used as the heat source of the air preheater in the heat exchange, and the waste heat is used to preheat the primary air and the secondary air, thereby improving the combustion quality and efficiency of the garbage. The flue gas after the heat exchange will be deacidified in the deacidification reaction tower, and after deacidification, it will be cyclone-separated again, and finally dusted in the dust collector, thereby improving the cleanliness of the flue gas.