260results about "Damper arrangement" patented technology

The invention discloses a combustor suitable for multi-coal combustion by synergistically changing a backflow area through a blade angle and air volume and a combustion method, belongs to the technical field of tangential boiler combustion, and aims to solve the problems that a self-service stable combustion combustor cannot flexibly change rotational flow intensity along with variation of coal quality, resistance is increased due to increase of the blade angle, and combustion efficiency is low. In order to solve the problems that pulverized coal cannot be fully combusted and stable combustion flames are difficult to form due to insufficient air pressure of a secondary air box, an inner secondary air rotational flow assembly and an inner secondary air supplementing system are introduced, so that the air volume of inner secondary air is adaptively changed by adjusting the working angle of blades in an inner secondary air pipeline, and the combustion efficiency of the pulverized coal is improved. Therefore, the rotational flow intensity of internal secondary air is flexibly adjusted according to different coal types, the purpose of stable combustion is achieved, and the device is mainly used for improving the stable combustion effect of the boiler during working.

The invention relates to the technical field of tangential boiler combustion, in particular to a direct-current burner and turbulent burner collaborative combustion device and method, and aims to solve the problems that a coal power unit only depends on pulverized coal combustion, the stable combustion effect is poor under the rated load of 20%-30%, the denitration efficiency is reduced during low-load operation, and combustion is unstable due to the fact that the coal quality deviates from a design value. According to the self-service combustion-stabilizing combustor, by means of the injection effect of direct-current primary air and direct-current secondary air of the direct-current combustor, a combustion-stabilizing cavity of the self-service combustion-stabilizing combustor and secondary air in rotational flow are cooperated, so that a center backflow area is formed in the center of the rotational flow combustor and serves as a stable ignition heat source to heat high-concentration pulverized coal, and meanwhile flame formed by combustion of the self-service combustion-stabilizing combustor can be used as a heat source for heating high-concentration pulverized coal. And primary air powder flame of the direct-current pulverized coal burner is ignited, external flame combustion-supporting technologies such as tiny oil or plasma are not used, and the stable combustion effect of a coal power unit only depending on pulverized coal combustion under the rated load of 20%-30% is achieved. The device is mainly used for improving the stable combustion effect of the boiler during working.

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 invention discloses a novel dust collector flue dust collection device and a dust collection capability improvement method, and relates to the technical field of dust collector dust collection, the novel dust collector flue dust collection device comprises a control unit, a dust collection unit, a dust collection unit and a dust collection unit, the control unit comprises a flue port, a driving assembly arranged on the flue port, and an adjusting assembly arranged at the bottom of the driving assembly; the guide unit comprises a gas gathering shell and a guide assembly arranged on one side of the gas gathering shell; and the filtering unit comprises a filtering assembly arranged on one side of the guiding assembly. After butt joint is completed, a motor is started to rotate and drive the motor to move left and right in a reciprocating mode, the motor slides in the motor to start to rotate so as to adjust the airflow angle in the motor and adjust the airflow passing speed, part of dust is captured, the flow velocity distribution of a flue is balanced, and meanwhile the situation that the airflow angle cannot be adjusted, and the airflow passing speed cannot be adjusted is prevented. The problems that fly ash cannot be rapidly collected, control cannot be carried out, fly ash collection is very inconvenient, and dust cannot be rapidly collected are solved.

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.

The utility model relates to the technical field of baffles, and provides a baffle with a sealing device, which comprises a plate body and a door frame, the plate body is positioned in the door frame, a rotating shaft is fixedly connected to the middle of the plate body, the rotating shaft is rotatably connected with the door frame, a sealing groove is arranged on one side of the plate body abutted against the door frame, the sealing groove is positioned in the middle of the plate body, and a plurality of sealing springs are arranged in the sealing groove. One end of the sealing spring is embedded into the plate body, the end, away from the plate body, of the sealing spring extends towards the door frame, the end, away from the plate body, of the sealing spring abuts against a first sealing strip, one side of the first sealing strip is located in the sealing groove, the first sealing strip is slidably connected with the plate body, and the side, facing the plate body, of the door frame is fixedly connected with a second sealing strip. The first sealing strip abuts against the second sealing strip, and a first inclined face is arranged on the side, abutting against the second sealing strip, of the first sealing strip. By means of the technical scheme, the problem that in the prior art, when an air door baffle is closed, complete sealing cannot be achieved, and air or smoke leaks is solved.

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.

The utility model relates to the related technical field of air door regulators, in particular to an air door regulator for an energy-saving burner, which comprises an air door regulator shell, a sealing cover, a relay protective cover and a mounting component. A relay protection cover is arranged at the fixed position of the installation assembly, the air door regulator further comprises a lubricating assembly which is installed on the air door regulator shell, a user can add lubricating liquid to the surface of a gear set and the lubricating liquid on the surface of the gear set to enter a cam groove in a storage cover, maintenance and lubricating storage are conducted, and the service life of the air door regulator is prolonged. When the gear set is in motion adjustment, the lubricating liquid enters the gear set, when the air door adjuster movably adjusts and controls the energy-saving combustor through the cam shaft, the lubricating liquid enters the gear set, daily maintenance is carried out after the cam shaft is movably adjusted, and the failure rate of the air door adjuster is reduced.

The utility model discloses a tertiary air flashboard with a ventilation cooling function for a cement kiln. The tertiary air flashboard is provided with a plate-shaped heat-resistant metal component serving as a framework. The plate-shaped heat-resistant metal component is of a hollow structure; a refractory material brick wall is mounted on the outer side wall surface of the plate-shaped heat-resistant metal component; an unshaped refractory material with a low heat conductivity coefficient is filled between the refractory material brick wall and the outer side wall surface of the plate-shaped heat-resistant metal component; the refractory material brick wall is composed of a plurality of refractory material hanging bricks hung on the outer side wall face of the plate-shaped heat-resisting metal component. And a high-wear-resistance unshaped refractory material is filled between every two adjacent refractory material hanging bricks. The tertiary air flashboard of the rotary cement kiln has excellent wear resistance and scouring resistance, the service life can exceed two years, the tertiary air flashboard is free of maintenance in the using process, the production reliability is improved, and the maintenance and production cost is remarkably 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.

The utility model relates to the technical field of air doors, in particular to an adjustable air door which comprises an air duct, a baffle body, a transverse plate and a removing assembly, the baffle body is in sliding connection with the air duct, the transverse plate is fixedly connected with the baffle body, and the removing assembly comprises two sets of lifting pieces, a push rod, an L-shaped plate, an extension plate, a clamping piece, a driving piece and two sets of scraping-off pieces. The lifting pieces are fixedly connected with the air duct, the pushing rod is fixedly connected with the two sets of lifting pieces, the L-shaped plate is fixedly connected with the pushing rod, the extending plate is fixedly connected with the air duct, the clamping piece is slidably connected with the extending plate, the driving piece is fixedly connected with the air duct, and the scraping piece is in threaded connection with the driving piece. Impurities on the surface of the baffle can be quickly cleaned, the air outlet quality of the air duct is improved, and the labor intensity of cleaning personnel is reduced.

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 invention relates to a multistage linkage flue gas baffle door device applied to the technical field of flue gas baffle doors, the multistage linkage flue gas baffle door device comprises a baffle door assembly, a control assembly and an intelligent controller, the baffle door assembly comprises a baffle door I and a baffle door II, the control assembly comprises a driver assembly and a plurality of gas feeders, and a buzzer is arranged on the intelligent controller. When the flue gas baffle door is used, the baffle plate expands, the control module controls the driver assembly to drive the baffle door I and the baffle door II to horizontally move, if the detection module does not receive an in-place signal of the proximity switch for a long time, the baffle door is judged to be deformed and stuck, and the control module controls the gas supply device to exhaust gas from a cavity in the baffle door. If the detection module still does not receive the in-place signal for a long time after the air exhaust control is started, it is judged that the baffle door is deformed and stuck, the baffle door is reset, control over the abnormal baffle door is abandoned, the single baffle door is controlled to be opened and closed, and meanwhile the alarm module controls the buzzer to give an alarm to remind that the device is abnormal.

Apparatus for controlling the flow of air through an air inlet in a solid fuel burner comprises: a mechanical temperature sensor for sensing the temperature within the solid fuel burner, the sensor comprising first and second elongate parts having different coefficients of linear thermal expansion and arranged such that a first end of the first elongate part moves linearly relative to a first end of the second elongate part in response to a change in the sensed temperature; a movable valve member for controlling the flow of air through the air inlet; and a mechanism for coupling the first end of the first elongate part to the movable valve member so as to close or restrict the air inlet as the sensed temperature increases.

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 relates to the field of boilers, in particular to a boiler air and smoke structure capable of accurately controlling exhaust smoke temperature. The utility model discloses a boiler air and smoke structure capable of accurately controlling exhaust smoke temperature. The air pre-heater is arranged in the length direction of the air duct, and at least one part of the air pre-heater is arranged in the air duct; the ignition cylinder is arranged on one side of the air duct and communicates with an air outlet of the air pre-heater; the bypass air supply pipe is arranged on the side, close to the ignition cylinder, of the air channel, one end of the bypass air supply pipe communicates with the air pre-heater, and the other end of the bypass air supply pipe communicates with the ignition cylinder. And the ignition combustion chamber is arranged at one end of the ignition cylinder and communicates with the ignition cylinder. The bypass is additionally arranged at the outlet of the air pre-heater to feed ignition air, so that a part of air entering the air chamber is forced to pass through the ignition air, and the smoke exhaust temperature under low load is increased.

The utility model provides a mechanical smoke exhaust linkage system of a gas-fired boiler, and particularly relates to the technical field of mechanical smoke exhaust of gas-fired boilers. The linkage system comprises a control system, a gas-fired boiler, a flue gas heat removal tower and a chimney, the gas-fired boiler, the smoke heat removal tower and the chimney are connected through smoke exhaust pipelines; a smoke exhaust fan is arranged on the side, close to the gas-fired boiler, of the smoke heat extraction tower. An air duct is arranged on the smoke exhaust pipeline between the gas-fired boiler and the smoke exhaust fan; and an opening feedback valve and a laser range finder are arranged in the air duct. The opening degree feedback valve and the laser range finder are additionally arranged, the opening degree of the opening degree feedback valve is monitored through the laser range finder, so that the working frequency of the smoke exhaust fan is adjusted, feedback is sensitive, reliability is high, and leakproofness is good; the problem of unsmooth smoke exhaust caused by the transformation of the gas-fired boiler is effectively solved, and the energy-saving and consumption-reducing effects of the smoke exhaust system can also be realized.

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 invention relates to the technical field of tangential boiler combustion, in particular to a cooperative combustion device and method for an efficient direct-flow combustor and a turbulent-flow combustor, and aims to solve the problem that a corner tangential boiler cannot stably operate under the lower rated load of 15%. Based on the collaborative combustion method of the direct-current combustor and the cyclone combustor, the direct-current primary air speed is increased by introducing an air supplementing system for increasing the air speed and the air temperature of the direct-current combustor and increasing the air temperature of the cyclone combustor, and the direct-current primary air speed is increased by introducing an air supplementing system for increasing the air temperature of the direct-current combustor and the air temperature of the cyclone combustor; therefore, the direct-current primary air injection capacity is improved, the shape and size of a central backflow area are adjusted, and the problem that a nozzle of a direct-current combustor is burnt out due to overheating caused by too low air speed of an air pipe is solved. Meanwhile, the temperature of direct-current primary air and the temperature of primary air of the self-service stable-combustion combustor are increased, the temperature of primary air powder at an inlet of the boiler can be increased, initial ignition and burnout of pulverized coal are enhanced, and the device is mainly used for improving the stable-combustion effect of the boiler under the working condition that the rated power is lower than 15%.

Provided is a premixing device for forming a premixed gas of heated air and ammonia, the premixing device comprising an injection unit configured to inject liquid ammonia into a heated-air flow path, which communicates with a furnace and through which heated air flows.

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 invention relates to a heating boiler (1) for logs, such as firewood (2), comprising a combustion chamber (3) above which a filling chamber (4) for the logs is arranged, wherein the filling chamber (4) has a hot chamber section (13) and a burn-through element (17) is arranged between the hot chamber section (13) and the combustion chamber (3), furthermore at least one ignition element (18) for igniting the logs is arranged or can be arranged, and with a filling chamber lining (12). In the hot chamber section (13) at least two support elements (20, 21) for supporting the logs are arranged, such that an air channel (23) is formed between the bottom of the hot chamber section (13) and the logs when the logs are ignited, extending between an ignition element (18) and the burn-through element (17).