83results about "Damper arrangement" patented technology

The utility model relates to a three-way flue and a flue gas treatment system equipped with the three-way flue, the three-way flue comprises a flue gas inlet section and two flue gas outlet sections, the two flue gas outlet sections are both provided with gate valves, the two groups of gate valves share one group of gate plate assembly, the gate plate assembly comprises a blind plate and a pore plate, the hole plate is a flashboard with a through hole, the blind plate is selectively inserted into one valve seat, and the hole plate is inserted into the other valve seat; and the three-way flue is provided with a blind plate switching execution mechanism for switching the blind plate and the pore plate. In the utility model, the two groups of gate valves share one group of gate component, and smoke can only be discharged from one smoke outlet section instead of being discharged from the two smoke outlet sections at the same time, so that the operation reliability is ensured, and the condition of misoperation is avoided; and the blind plate and the pore plate are adopted for switching, so that the sealing performance of the two groups of gate valves can be ensured.

The application relates to a direct-flow combustor and swirl combustor cooperative combustion device and method, and belongs to the technical field of tangential circle boiler combustion technology. In order to solve the problems of poor stable combustion effect of a coal power unit only relying on pulverized coal combustion at 20%-30% rated load, reduced denitration efficiency during low-load operation, and unstable combustion caused by coal quality deviating from the design value, the application relies on the direct-flow primary air and direct-flow secondary air of a direct-flow combustor, the stable combustion cavity of a self-help stable combustion combustor, and swirl inner secondary air, so that a center backflow area is formed in the center of a swirl combustor, as a stable ignition heat source, high-concentration pulverized coal is heated, a flame formed by the self-help stable combustion combustor is ignited, a direct-flow pulverized coal combustor primary air powder flame is ignited, external flame combustion-supporting technologies such as micro-oil or plasma are not used, and the stable combustion effect of the coal power unit only relying on pulverized coal combustion at 20%-30% rated load is realized. The application is mainly used for improving the stable combustion effect of a boiler during work.

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 a device (10) for providing air into a combustion furnace (18), the device (10) comprising: a sleeve (11) enclosing a distribution chamber (20) and a feed duct (21) extending outwardly from the distribution chamber (20); an inlet (12) for receiving air from an air source into the distribution chamber (20); an outlet (13) located at the end of the feed duct (21) for discharging air from the inside of the sleeve (11); an inlet valve (19) arranged at the inlet (12) and adjustable to control the air entering the distribution chamber (20) through the inlet (12); a damper (14) arranged within the feed duct (21) and movable from a restricted position to an open position, or to a position between them, to regulate the flow of air discharged through the outlet (13). In the device (10) according to the invention, the damper (14) comprises a first flow-limiting element (15a) and a second flow-limiting element (15b), which are arranged one above the other and at a distance from one another in the feed duct (21), the first flow restriction element (15a) and the second flow restriction element (15b) are arranged such that at least a portion of the air flowing from the distribution chamber (20) to the feed duct (21) can flow through a gap (GP) between the first flow restriction element (15a) and the second flow restriction element (15b) to the outlet (13). The invention also relates to a combustion furnace (18) and to a method for providing air into a combustion furnace (18).

A grill-cooking apparatus including a burner causing hydrogen gas to combust, and a food mounting part provided above the burner, the grill-cooking apparatus being capable of grill-cooking both in the state where moistness of the surface is given and in the state where crispness of the surface is given, with good cookability. In the grill-cooking apparatus, an introduction-position variable device is provided, which changes an introduction position of secondary air supplied to the burner. In a case where a case is provided that surrounds a portion of the burner, which is located below the food mounting part, and extends downward, the closure-changing plate is configured to be capable of closing the lower-end opening of the case.

The utility model discloses an air flap structure of a portable stove, which comprises a shell of the portable stove, one side of the shell is provided with a connector used for being connected with a gas tank, the connector is provided with an air flap, the air flap is provided with a first air inlet hole, and the shell is provided with a second air inlet hole corresponding to the first air inlet hole; a spring piece is installed on the connector, the air door piece abuts against the side wall of the shell, the connector is rotated, the air door piece rotates, the overlapping area of the first air inlet and the second air inlet is adjusted, then the air inlet amount is adjusted, immediate adjustment can be conducted in the using process of the portable furnace, and operation is easy, convenient and flexible.

The utility model discloses an induced draft fan outlet baffle door which comprises a door plate, an open groove is formed in the door plate, a first sealing plate is movably connected in the open groove, symmetrical second sealing plates are movably connected in the open groove, the first sealing plate is movably connected to the second sealing plates, a rotating shaft is fixedly connected to the side face of the door plate, and the rotating shaft is fixedly connected to the side face of the door plate. A door handle is fixedly connected to the door plate, a third rotating groove is formed in the sealing batten, a first gear is fixedly connected to the other end of the first rotating rod, a second gear is correspondingly and fixedly connected to the other end of the second rotating rod, and the first gear and the second gear are sleeved with a movably-connected rotating belt. Through the structure, leakage points are effectively reduced, the sealing flexibility and adaptability are improved, the sealing efficiency is improved, the service life of the baffle door is prolonged, the maintenance cost is reduced, the structural stability is improved, and the operation convenience and efficiency are improved.

The invention discloses a boiler flue gas partition device with a sealing detection function, and relates to the technical field of boiler flue gas partition, the partition device comprises a metal frame, a rotating shaft, plate blades, a connecting plate, a transmission rod, a sealing assembly, a pushing assembly and a detection assembly; in order to prevent smoke from leaking from the gaps between the plate blades, the gaps can be filled through mutual insertion of the sealing assemblies, the stability of the plate blades can be improved while smoke leakage is prevented, shaking of the plate blades caused by too strong smoke flow is prevented, meanwhile, the detection assemblies can detect the sealing strength between the plate blades in real time, and if smoke leakage still exists, the detection assemblies can detect the sealing strength of the plate blades in real time. When the detection assembly is in use, the detection assembly can make a warning action, then the sealing assembly can continue to be operated, the abutting strength between the sealing assembly and the pushing assembly is enhanced, the sealing effect is improved, and smoke leakage under strong airflow is prevented from causing potential safety hazards to overhaul.

This utility model relates to the technical field of damper plates for branch flues of oxy-fuel kilns, specifically a water-cooled damper plate for branch flues of oxy-fuel kilns. It includes two lifting plates with a damper plate fixedly connected between them. The damper plate consists of several parallel sealing units. Each sealing unit includes two parallel straight pipes and two U-shaped pipes connecting the two straight pipes. The two U-shaped pipes are interconnected, and the upper end of each straight pipe has a nozzle for connecting to an external cooling water circulation system. This water-cooled damper plate for branch flues of oxy-fuel kilns allows circulating cooling water to flow through the cavity between the straight pipes and U-shaped pipes, carrying away the heat transferred from the branch flue to the damper plate, reducing the operating temperature of the damper plate, and extending its service life. Because the damper plate is less prone to burn-out, it automatically controls the flue gas flow in the front and rear flues, reducing fuel consumption and lowering energy consumption and production costs.

A vent damper for a fireplace system includes a support framework couplable with a flue pipe, and a flexible damper layer disposed on the support framework. The flexible damper layer assumes an open configuration in a presence of fluid flow from the flue pipe and a closed configuration in an absence of the airflow from the flue pipe. The damper layer is high temperature resistant.

A corner tangential boiler flame deflection correction system disclosed by the present invention comprises a flame image acquisition module, the flame image acquisition module is connected with a flame center identification module, the flame center identification module is connected with a correction control module, and the correction control module is internally provided with a flame deflection-air door adjustment mapping model. And the correction control module is connected with an execution module. The invention further discloses a flame deflection correcting method for the corner tangential boiler. According to the flame deflection correction system and method for the corner tangential boiler, the problems that in the prior art, traditional flame deflection correction depends on manual operation, and flame center space coordinates cannot be accurately quantified are solved.

The present application relates to the technical field of cement kiln waste gas emission control, in particular to a self-denitrification system and process with self-adjustment of temperature and air coefficient in a decomposing furnace, which comprises: a rotary kiln and a flue; a denitrification furnace comprising a denitrification cone part and a denitrification cylinder part; a decomposing furnace comprising a lower decomposing cylinder and an upper decomposing cylinder, the inner diameter of the lower decomposing cylinder being larger than that of the denitrification cylinder part, and a decomposing cone part being arranged between the lower decomposing cylinder and the denitrification cylinder part; a necking structure being arranged between the lower decomposing cylinder and the upper decomposing cylinder; a tertiary air pipe comprising a lower branch pipe and an upper branch pipe; and a material distribution structure for conveying raw materials to the decomposing furnace and the denitrification furnace. The present application avoids skinning and uneven mixing of flue gas, forms a cyclone effect in the decomposing furnace, strengthens the mixing of combustion-supporting air and flue gas, accelerates the burnout of fuel to reduce heat consumption, realizes precise control of the distribution ratio, precisely adjusts the temperature field in the denitrification furnace and the decomposing furnace, and provides a stable high-temperature area for NOx reduction and fuel combustion.

The electronic control device of the present application is provided with: a flow rate calculation section that calculates the flow rate of intake air from an output signal of a flow rate measuring device attached to an intake pipe; a flow rate correction value calculation section that calculates an average value, a maximum value, a minimum value, and an amplitude of a signal of one or more frequencies included in the output signal of the flow rate measuring device and above a fundamental frequency of the output signal of the flow rate measuring device, for a prescribed period, of the flow rate of intake air calculated by the flow rate calculation section, and calculates a correction value for the flow rate of intake air from the calculation results; and a flow rate correction section that corrects the flow rate of intake air according to the correction value.

The utility model relates to the technical field of baffle doors, and provides a flue gas baffle door capable of preventing flue gas corrosion, which comprises a frame, a main splicing structure, an auxiliary splicing structure, an anti-scalding plate and a cooling mechanism, the main splicing structure is arranged in one frame and used for being spliced to form a smoke baffle door, the auxiliary splicing structure is arranged at the bottom of the main splicing structure and used for being spliced with the main splicing structure to form the smoke baffle door, and anti-scalding plates are arranged in the main splicing structure and the auxiliary splicing structure and used for preventing smoke from being scalded. Cooling mechanisms are arranged on the outer walls of the main splicing structure and the auxiliary splicing structure correspondingly and used for cooling the smoke baffle door. By means of the technical scheme, the problems that in the prior art, when the smoke baffle door is heated continuously, thermal deformation occurs, the whole smoke baffle door needs to be detached for maintenance and replacement, replacement is troublesome, and the working effect is affected are solved.

A radiant tube burner, wherein an opening cross section of the tube is virtually divided into four areas with two straight lines as boundaries, the two straight lines being obtained by tilting a minor axis of the oval, which is a shape of the opening cross section, by ±45° with a center of the oval as a center, and a flow rate of primary combustion air injected from primary combustion air nozzles located in the areas containing the minor axis of the oval of the virtually divided four areas is lower than a flow rate of the primary combustion air injected from the primary combustion air nozzles located in the areas not containing the minor axis of the oval the four areas.

The present application relates to garbage disposal technical field, specifically disclose integrated grate garbage gasification combustion furnace, including drying gasification chamber and burning chamber, drying gasification chamber is equipped with push material platform and integrated grate body, integrated grate body includes two edge beam components, integrated fixed grate and integrated movable grate, the first end of edge beam component extends into the below of push material platform, the distance between the first end of integrated movable grate and push material platform is greater than the moving stroke of integrated movable grate, edge beam component is equipped with primary air channel for supplying air to integrated fixed grate, the tail end of integrated grate body is equipped with vertical partition wall and inclined refractory wall, the bottom of refractory wall is hinged with isolation flap, the isolation flap is vertically arranged and forms closed triangular area with partition wall and refractory wall to separate burning chamber and integrated movable grate. The present application can solve the technical problems of uneven heat distribution in the existing technology furnace, low utilization rate of heat, low heat conversion efficiency, limited garbage pyrolysis gasification and burning efficiency.

The application discloses a low-temperature flue gas on-line heat taking device and method, relates to the technical field of flue gas waste heat recovery, and the device comprises flue gas pipelines before and after heat taking, a first variable diameter section, a working cabin, a second variable diameter section and flue gas pipelines after heat releasing which are sequentially connected, a maintenance cabin, an electric gate valve, a flue gas heat exchanger and a sealing assembly, the maintenance cabin is installed on one side of the working cabin, the maintenance cabin is communicated with the working cabin, the electric gate valve is installed at the connection of the working cabin and the maintenance cabin, the flue gas heat exchanger is movably arranged, the flue gas heat exchanger is arranged in the working cabin or the maintenance cabin, and the sealing assembly is used for sealing the gap between the flue gas heat exchanger and the inner wall of the working cabin under the condition that the flue gas heat exchanger is arranged in the working cabin. When maintenance and repair are carried out, a bypass flue and a cut-off valve are not needed, cost and land occupation are saved, air leakage hidden dangers existing in the cut-off valve are eliminated, the maintenance space is sufficient, high safety guarantee is provided, and the fan energy consumption of the flue gas system is reduced.

The invention relates to a non-return valve (1) for a flow channel (14) through which a flow of air flows, comprising a housing (2) through which air flows in an outflow direction. The non-return valve has an outflow opening (8) which can be closed by a blocking flap (3) pivotally mounted on the housing (2). The blocking flap (3) has a dome-shaped bulge (19) with an inner region (20) which is curved forwards in the outflow direction. An opening edge (16) of the outflow opening (8) of the housing (2) has a hinge region (17) in which the blocking flap (3) is pivotally mounted on the housing (2) and which transitions into a blocking flap stop region (18) arranged opposite the hinge region in the circumferential direction, said blocking flap stop region being offset in the outflow direction so that the opening edge (16) has a progression which is not only curved in the circumferential direction but also in the outflow direction. The housing (2) has an indentation (26) in the circumferential direction, said indentation not being closed by the blocking flap (3) such that the indentation (26) forms a condensate chamber (27) when the housing (2) is inserted into the surrounding flow channel (14). The indentation (26) is equipped with a flow opening (28), through which a condensate accumulating in the condensate chamber (27) delimited by the indentation (26) can flow in the interior of the housing (2), thereby bypassing the blocking flap (3), in the vicinity of the opening edge (16) of the outflow opening (8).

A combustion apparatus 10 for combustion of particulate combustible material comprises a combustion portion 60 which defines an internal combustion chamber (12, Fig. 4) and an outlet portion 100. A fi

The utility model belongs to the technical field of household gas stove equipment, and particularly relates to a sliding type air door adjusting device and a multi-channel gas stove plug valve, the sliding type air door adjusting device comprises a furnace end end cover, an air door plate and an elastic piece, and the air outlet end of a multi-channel nozzle is matched with the furnace end end cover and is in sliding fit with the air door plate; the elastic piece is located between the air outlet end of the multi-channel nozzle and the air door plate. The air door plate can move relative to the furnace end end cover, so that the relative position of the blocking part of the air door plate and the air inlet hole is adjusted, the size of the air inlet hole, namely the opening degree of the air inlet hole, can be adjusted, and the requirements of different air sources are met; and meanwhile, the problem that a double-nozzle structure cannot be directly matched with a traditional rotary air door adjusting device is solved.

The invention provides a self-made hydrogen heating conduction oil device which comprises a methanol hydrogen production device, a methanol raw material barrel, a methanol combustor, a methanol conveying pump and a conduction oil circulating device, the methanol hydrogen production device comprises a combustion chamber and a hydrogen production part, and a fin heating pipe is arranged in the hydrogen production part; the methanol combustor and the methanol delivery pump are respectively connected with a methanol raw material barrel pipeline, the methanol raw material barrel provides methanol for combustion for the methanol combustor, and the methanol raw material barrel delivers methanol for hydrogen production to the hydrogen production part through the methanol delivery pump; the methanol-to-hydrogen device has the advantages that hydrogen is produced on site through the methanol-to-hydrogen device, part of hydrogen is directly used for combustion of the methanol combustor, external fuel supply is not needed, and a long-distance fuel pipeline is omitted; the self-production, self-supply and self-use mode of hydrogen reduces interference of external factors, equipment operation reliability is improved, and the device is suitable for continuous heating scenes.

An air supply system for a pellet stove has an air supply system providing primary and secondary combustion air, the secondary combustion air being introduced into a burn pot above, and orthogonal to, the primary air. The system and methods for the use thereof improve the emissions performance of stoves burning solid fuel in granular form, including solid biomass fuel. Stoves incorporating such air supply systems have reduced emissions, including reduced emissions of one or more of carbon monoxide, particulate matter (PM2.5), and black carbon.

The utility model relates to an automatic control smoke and air duct isolating device which comprises a smoke and air duct and a smoke and air duct isolating device body, an induced draft fan is arranged at the position, close to an outlet, of the smoke and air duct, and the smoke and air duct isolating device body is of an inserting plate type structure and is composed of a door frame, a door plate matched with the door frame, a bearing seat and a power device. Wherein the door frame is inserted into the flue, the area of the door frame is matched with the section of the flue, a bearing seat and a power device are arranged on the top or the bottom of the outer side of the door frame and located on the outer side of the flue, a door shaft is installed on the bearing seat, and a door plate is installed on the door shaft and located in the door frame, so that the door plate is suspended on the bearing seat through the door shaft. The door plate is connected with a power device, the door plate is controlled to be opened or closed through the power device, and opening and closing of the smoke and air duct are achieved. The device is simple and reasonable in overall structure, practical and convenient.

The invention discloses an air door baffle structure of a thermal power plant, and aims to solve the problems that a traditional air door baffle structure lacks the design of dredging the smoke flow direction and reducing impact, the interior of a baffle is difficult to clean, and the service life is affected. The air door baffle structure comprises an air door box, a flow guide assembly, a first driving assembly, a cleaning assembly and a second driving assembly. The air door box body forms an airflow channel; the flow guide assembly is located at one end of the airflow channel and used for adjusting the opening degree of the airflow channel and the airflow direction. The first driving assembly is used for driving the flow guide assembly to rotate to realize opening adjustment; the cleaning assembly is used for blocking smoke dust and cleaning the first surface of the flow guide assembly when the flow guide assembly is opened, and is used for cleaning the second surface of the flow guide assembly when the flow guide assembly is closed; the second driving assembly is used for driving the cleaning assembly to rotate. In different operation states, the windward side and the leeward side of the flow guide assembly are subjected to smoke dust cleaning, and smoke dust is prevented from being attached to the flow guide assembly.

The invention relates to the technical field of kitchen appliances, in particular to a pot rack assembly capable of adjusting secondary air and a stove. The pot rack assembly capable of adjusting the secondary air comprises a pot rack body, and at least one air adjusting opening is formed in the pot rack body; the baffles and the air conditioning ports are the same in number and are matched in a one-to-one correspondence mode. And the baffles move relative to the air conditioning ports, so that the opening degrees of the corresponding air conditioning ports are adjusted. In this way, the secondary air supply amount can be intelligently, automatically and accurately adjusted according to the heat load change of the combustor.

The present application relates to the technical field of coal powder burner, in particular to a multi-shaft coal powder combustion device, which comprises a main structure cylinder, coal powder inlets and combustion ports are respectively arranged at both ends of the main structure cylinder; first air ducts and second air ducts are respectively arranged in the main structure cylinder, and the end nozzles of the first air ducts and the second air ducts are located at the combustion ports; cyclones are arranged at the end nozzles of the first air ducts. Compared with the prior art, the present application supplies oxygen for coal powder combustion through the first air ducts and the second air ducts, the end nozzles of the first air ducts are provided with cyclones, which are responsible for supplying oxygen for the flame near the combustion port, and the end nozzles of the second air ducts are high-speed jetted to a far place, which is responsible for supplying oxygen for the flame far away, so that the scale of the torch is effectively reduced, the large high-temperature area of the single torch is largely eliminated, and the generation of nitrogen oxide pollution is reduced.

An electronic control device includes: a flow rate calculation unit that calculates a flow rate of intake air based on an output signal of a flow rate measurement device assembled to an intake pipe; a flow rate correction value calculation unit that calculates an average value, a maximum value, and a minimum value of the flow rate of the intake air, calculated by the flow rate calculation unit, during a predetermined period, and an amplitude of a signal with one or more frequencies equal to or higher than a fundamental frequency of the output signal of the flow rate measurement device and included in the output signal of the flow rate measurement device, and calculates a correction value for the flow rate of the intake air based on calculation results; and a flow rate correction unit that corrects the flow rate of the intake air based on the correction value.

A restrictor for an air induction system is described herein. The restrictor includes a ducting box, a housing, and a flap assembly that is hingedly coupled to the housing. The flap assembly is designed to rotate in response to a pressure differential between the ducting box and the housing. A holding force may be based upon one or more of a weight of the flap assembly or an angle of a closed position of the flap assembly.

We provide a fire starter that also functions as a fire extinguisher pot, allowing for easy fire starting and extinguishing. [Solution] The fire extinguisher pot, which also serves as a fire starter, comprises a cylindrical pot tub 1, a first disc 3a and a second disc 3b fixed vertically with a gap in the middle lower part of the pot tub, a third disc 3c rotatably held in the gap between the first disc and the second disc, and a lid 2 that can be attached to and removed from the upper opening of the pot tub. The first to third discs are provided with a plurality of vents 4a to 4c of the same shape and layout. The first and second discs are fixed inside the pot tub so that the plurality of vents align vertically. The first to third discs form the bottom plate of the pot tub, and the second disc rotates between the first and third discs, thereby changing the opening amount of the vents in the bottom plate formed by the plurality of vents of each of the first to third discs.