140results 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.

This invention relates to a high-efficiency co-combustion device and method for a direct-flow burner and a swirl burner, within the field of tangential boiler combustion technology. To address the problem of tangential boilers failing to operate stably at 15% or lower rated loads, and the issues of nozzle overheating and burnout due to low primary air velocity in the direct-flow burner, as well as pulverized coal blockage in the pipes, this application utilizes a co-combustion method combining a direct-flow burner and a swirl burner. By introducing a system to increase the air velocity and temperature of the direct-flow burner and a supplementary air system for the swirl burner, the direct-flow primary air velocity is increased, thereby enhancing the direct-flow primary air ejection capacity. This allows for adjustment of the shape and size of the central recirculation zone and prevents nozzle overheating and burnout due to low air velocity in the duct. Simultaneously, increasing the temperature of the direct-flow primary air and the self-regulating combustion burner's primary air increases the pulverized coal temperature at the boiler inlet, strengthening initial ignition and burnout of the pulverized coal. This application is primarily intended to improve the stable combustion effect of boilers operating below 15% of rated power.

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).

The present invention discloses a waste incineration preheating device and a waste incineration system, wherein the waste incineration preheating device includes a hot air duct and a primary fan, a steam-air preheater, and a heat pipe heat exchanger arranged in sequence on the hot air duct along the gas flow direction. The heat pipe heat exchanger includes a heat exchanger body and a plurality of heat pipes. The heat pipes are provided with a phase change medium for heat exchange. The condensing pipe section at the upper end of the heat pipe is arranged in the condensing chamber of the heat exchanger body. The heating pipe section at the lower end of the heat pipe is located in the heating chamber of the heat exchanger body. The heating chamber is located in the flue. The heating pipe section is connected to the condensing pipe section, and both ends of the condensing pipe section are connected to the hot air duct. In the waste incineration preheating device provided in this application, a heat pipe heat exchanger is arranged downstream of the steam-air preheater. The heat source of the heat pipe heat exchanger comes from the gas in the flue, and high-quality steam is not consumed. As a result, the operating and use costs of the waste incineration preheating device provided in this application are reduced.

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.

Disclosed are a gas furnace and an air conditioner having the same. The gas furnace includes: a burner for burning fuel; a manifold providing the fuel to an entry of the burner; a heat exchanger spaced apart from an exit of the burner and providing a passage for combustion gas generated by the burner; an inducer for causing a fluid to flow through the burner and the heat exchanger; a blower for causing a flow of air passing around the heat exchanger; and an air shutter positioned between the manifold and the entry of the burner. The air shutter includes: a housing having an inner space that communicates with the manifold and the entry of the burner; and a primary hole formed to penetrate the housing and able to be opened and closed.

The invention discloses a low-heating-value gas boiler heat exchange system which comprises a horizontal flue and a vertical flue, a high-temperature reheater and a low-temperature reheater are arranged in the horizontal flue, and an upper-stage air preheater and a lower-stage air preheater are arranged in the vertical flue. A left side connecting flue and a right side connecting flue are arranged on the left side and the right side of the middle position of the upper-stage air pre-heater and the lower-stage air pre-heater, a bypass flue is connected between the left side connecting flue and the right side connecting flue and provided with a steam flue gas heat exchanger, and the bypass flue is connected with the two ends of the flue gas heat exchange side of the steam flue gas heat exchanger. The two ends of the steam heat exchange side of the steam flue gas heat exchanger communicate with a steam bypass, and the steam bypass communicates with an outlet of the low-temperature reheater and an inlet of the high-temperature reheater. The smoke temperature of the lower-stage air pre-heater is increased, the condensation possibility of ammonium hydrogen sulfate is reduced, the corrosion risk of the ammonium hydrogen sulfate to the heating surface of the lower-stage air pre-heater is reduced, and the service life of equipment is remarkably prolonged; and the overtemperature risk of the reheater is reduced, and the flexibility of reheating steam temperature adjustment is improved.

The invention relates to the technical field of combustors, in particular to a pull rod mechanism and a combustor secondary air limiting device.The pull rod mechanism comprises a push-pull component and a pull rod assembly, one end of the pull rod assembly is arranged on an air duct sleeve, and the other end of the pull rod assembly is provided with a control assembly; the measuring part comprises a caliper, a vernier is arranged on the caliper in a sliding mode, and the vernier is fixedly connected to the pull rod assembly; through the arrangement of the sliding block and the guide rail, the movement of the air duct sleeve is guided; the baffle is arranged in cooperation with the first limiting piece and the second limiting piece, so that the moving range of the air duct sleeve is limited; and the dust removal plates are arranged to remove dust in the grooves of the sliding blocks in time, interference and even tight holding caused by dust accumulation between the sliding blocks and the guide rails are avoided, the overall operation of the device is smoother, and the operation safety of the combustor is improved.

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 circulating fluidized bed boiler combustion system comprises a hearth, the cyclone separator, separator vertical pipes and a mixed air supply system, the mixed air supply system comprises a mixed air pipe, a primary air pipeline, a recirculating flue gas pipeline, vertical pipe spray pipes and a mixed air pipe header pipe, the vertical pipe spray pipes are distributed on the mixed air pipe, and the separator vertical pipes are distributed on the mixed air pipe header pipe. The spraying end of the vertical pipe spraying pipe is communicated with the separator vertical pipe, the recirculating flue gas pipeline is communicated with a tail flue outlet and a mixed air pipe header pipe, the tail end of the mixed air pipe header pipe is communicated with a mixed air pipe, and the primary air pipeline is communicated with the mixed air pipe header pipe; and a mixed air supply main valve, a primary air valve and a recirculating flue gas valve are respectively arranged on the mixed air main pipe, the primary air pipeline and the recirculating flue gas pipeline. The efficiency of the separator can be adjusted according to the actual combustion working condition, so that the hearth temperature is guaranteed, and the carbon content of bottom slag is controlled. And meanwhile, a good effect is also achieved on flame-retardant particle combustion enhancement and high alkali metal fuel coking inhibition.

The utility model relates to the technical field of flue turning plates, in particular to an automatic flue turning plate control device which comprises a flue side plate and a chain plate tail plate arranged on the inner side of the flue side plate, an installation support is arranged on the outer side of the flue side plate, a turning mechanism is arranged on the top of the installation support, and the turning mechanism comprises an air cylinder fixed to the top of the installation support. A lantern ring is fixed to a piston rod of the air cylinder, a steel wire rope is connected to the inner side of the lantern ring in a sleeved mode, a pulley is in transmission connection with the outer side of the steel wire rope, a traction wheel is connected to the tail end of the steel wire rope in a sleeved mode, a traction rope is connected to the outer side of the traction wheel in a sleeved mode, a balancing weight is fixed to the bottom end of the traction rope, and a connecting mechanism is arranged on the inner side of the flue side plate. By arranging the turnover mechanism, manual operation of the flue turnover plate of the calcium carbide furnace is transformed into remote operation, potential safety hazards during manual operation of personnel are effectively reduced, the operation of manually opening and closing the flue turnover plate on site can be completely replaced, and the operation safety is improved.

The air door comprises an air door body, an air opening is fixedly formed in the outer side of the air door body, a containing box is fixed to the end of the air door body in a threaded connection mode, an air blocking door is movably installed in the containing box, and a gearbox is installed on the upper side of the right wall of the air door body in a threaded connection mode. A handle connecting shaft is installed at the end of the gearbox, an output shaft on the gearbox is fixedly connected with the driving shaft through a coupler, and a pointer is fixedly installed on the output shaft. According to the air door with the adjustable air volume, when the driving pointer rotates, the mark holes in the driving pointer are formed in the corresponding numbers in a framing mode, and the corresponding ventilation volume of the air door body can be selected; when the ventilation quantity is manually adjusted, the experience and feeling of operators are not needed, the adjustment results of different operators each time are consistent, and the influence on the stability and efficiency of boiler combustion is avoided.

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.

The utility model discloses a combustion control device for a garbage incinerator grate furnace, which comprises a fan, a blowpipe and a bypass cold air pipeline, the fan is communicated with the blowpipe and the bypass cold air pipeline, one side of the blowpipe close to the fan is provided with a heating unit, and the other side of the blowpipe is provided with a first air outlet pipe and a second air outlet pipe which are respectively communicated with the front section and the middle section of a combustion chamber; a third air outlet pipe and a fourth air outlet pipe are arranged on the other side of the bypass cold air pipeline, the third air outlet pipe is communicated with the second air outlet pipe, and the fourth air outlet pipe is communicated with the rear section of the combustion chamber; and an adjusting valve is arranged on each air outlet pipe. Controllable air blowing is independently arranged for the front section (drying section), the middle section (combustion section) and the rear section (after-combustion section) of the combustion chamber, the primary air temperature of the drying section is increased, the garbage drying effect is better, the primary air temperature of the combustion section can be adjusted according to the combustion condition, and therefore the combustion intensity is controlled, and the deslagging temperature of the after-combustion section can be effectively reduced; and the boiler efficiency is improved.

The invention relates to the biomass gasification equipment for households that applies biomass gasification technology and burns the generated biomass gas to generate heat for cooking and / or to produce biochar. The equipment according to the invention is a type of continuous volumetric biomass gasification equipment, operating in batches. This equipment is in the form of a vertical cylinder, including a fuel chamber, inside this chamber includes a primary air distribution unit located at its bottom to distribute the primary air, the secondary air box is located inside the space between the two shells of the equipment. In another option, there is also a gasification chamber inside the fuel compartment of the gasification equipment.

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.

A liquid or gaseous fuel burner has a supply circuit for supplying a liquid or gaseous fuel to a burner head (2); a first pneumatic circuit (3) configured to supply oxidation air to the combustion head (2) and provided with first valve means (7); and a second pneumatic circuit (4) configured to feed a flow of combustion fumes from the combustion head (2) into the first pneumatic circuit (3) and provided with second valve means (11) movable between a closed position and an open position of the second pneumatic circuit (4) and third valve means (12) movable between a closed position and an open position of the second pneumatic circuit (4). Third valve means are connected to the first valve means (7) to move between a closed position of the second pneumatic circuit (4) and a plurality of open positions for each open position of the first pneumatic circuit (3), and selectively control the emission of nitrogen oxides NOx. The liquid or gas fuel burner provided by the utility model has relatively many operation modes and relatively strong multifunctionality.

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.

The invention provides a preparation technology and a combustion technology of cow dung biomass fuel, and relates to the technical field of biomass fuels, the preparation technology comprises the following steps: S1, collecting fresh cow dung, and carrying out primary drying until the moisture content of the cow dung is a first threshold value; s2, laying the primarily dried cow dung on the ground, and rolling the cow dung by using a road roller to improve the viscosity of the cow dung; s3, collecting the rolled cow dung into a pile, feeding the pile into a biomass fuel forming device, and granulating to obtain primary cow dung biomass fuel granules; and S4, carrying out secondary drying on the primary biomass fuel particles obtained by granulation until the moisture content of the cow dung reaches a second threshold value, so as to obtain the cow dung biomass fuel finally used for combustion, the prepared cow dung biomass fuel is combusted to generate heat through a double-stage combustion process of anoxic combustion and combustible gas combustion. According to the scheme, the cost is low, and the forming rate of the biomass fuel and the energy conversion efficiency of the biomass fuel can be improved.

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 invention provides an air door anti-blocking device for automatically controlling the air volume of a combustor. The air door anti-blocking device comprises a main body, a barrel-shaped air door, an anti-blocking unit and a driving mechanism, a plurality of air inlets are formed in the main body at intervals in the circumferential direction; the barrel-shaped air door is movably arranged on the outer side of the air inlet of the main body in a sleeving manner; the anti-clamping unit comprises an anti-clamping guide rail, a fixing lug, a guide rail wheel, a dust cleaning brush and an air door push-pull rod; the anti-clamping guide rail is arranged on the main body; the fixing lugs are arranged on the outer side of the barrel-shaped air door; a fixing groove is formed below the fixing lug, the guide rail wheel is installed in the fixing groove, and the guide rail wheel is in sliding contact with the anti-clamping guide rail; the ash removal brush is arranged in the fixing groove, and the bottom of the ash removal brush is tightly attached to the anti-clamping guide rail; one end of the air door push-pull rod is connected with the fixing lug; and the other end of the air door push-pull rod is connected with the driving mechanism. The barrel-shaped air door has the technical effects that the design is reasonable, and movement and jamming of the barrel-shaped air door are effectively avoided.