20results about "Damper arrangement" patented technology

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 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 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.

A furnace comprising a combustion chamber bounded by side walls, the combustion chamber having at least one wall with a combustion air opening to allow air to flow into the combustion chamber for combustion, and a combustion chamber exhaust opening to direct combustion gases out of the combustion chamber, further comprising a combustion air collector connected to the combustion air opening and a combustion air collector opening through which air for combustion enters and is then directed into the combustion air opening, characterized by a secondary air device comprising a channel connected at a first end to the combustion air collector and exiting at a second end in the region of the flue gas collector, so that air from the combustion air collector is directed around the combustion chamber, further comprising a control damper that regulates the amount of air flowing through the channel.depending on the negative pressure in the combustion chamber exhaust opening.

The application belongs to the technical field of induced draft fan dampers, and discloses a boiler induced draft fan damper self-closing prevention device, which comprises a damper frame, damper plates movably installed inside both sides of the front end of the damper frame, door shafts fixedly and in a penetrating manner installed in the inner cavities of one side of the two damper plates, and the two door shafts are rotatably installed at the positions of both sides of the front end of the damper frame, and the top of the two door shafts extends above the damper frame; the door shafts, gear one, the threaded cylinder, the threaded rod, the rack plate, gear two, gear three, the driving motor and the supporting piece and the limiting piece arranged at the damper frame and the damper plate of the boiler induced draft fan can control and position the opening and closing states of the two damper plates, realize the effective self-closing prevention function of the damper plate, prevent the damper plate from gradually reducing the opening state due to vibration, prevent the increase of power consumption and even the damage of the induced draft fan, and prevent the occurrence of great economic losses.

The present application provides a kind of methanol boiler automatic control system and control method for ship, and automatic control device is connected combustion fan frequency converter, combustion fan;Automatic control device is also connected combustion air door actuator, atomizing air door actuator;Automatic control device is connected on the ignition pump of exhaust fan, methanol main supply valve for supplying methanol to combustor, methanol delivery pump, 1# methanol cut-off valve, methanol regulating valve, 2# methanol cut-off valve of combustor;Automatic control device is also connected to combustor fuel delivery pump, fuel regulating valve, electric heater, 1# fuel cut-off valve, 2# fuel cut-off valve for supplying fuel;Automatic control device is also connected to water supply pump, water supply regulating valve for supplying water to methanol boiler;Methanol boiler on combustor is connected to automatic control device, and sends start-stop signal;It also includes combustion management system, boiler safety protection system, man-machine interface.The present application can realize that the ship boiler system with methanol or fuel oil as fuel is safe, reliable and stable operation.

This application relates to a method and system for adjusting the damper of an induced draft fan, relating to the field of induced draft fans. The method includes acquiring the pressure value inside the furnace, the boiler load value, the oxygen content at the induced draft fan outlet, and the carbon monoxide content; determining a reference opening degree for the induced draft fan damper based on the boiler load value; calculating a target damper opening degree for the induced draft fan based on the pressure value, the oxygen content at the induced draft fan outlet, and the carbon monoxide content; and controlling the induced draft fan damper to move to the target damper opening degree. This application achieves precise and appropriate control of the induced draft fan damper by considering the combustion conditions inside the furnace and the furnace pressure.

This utility model relates to the field of boiler technology, specifically a boiler flue connection structure with self-adjusting ventilation volume. It includes a boiler flue pipe with a first pressure sensor installed on its inner wall. The boiler flue pipe is connected to a flue pipe via a self-adjusting ventilation assembly. The flue pipe has a second pressure sensor, a temperature sensor, and a flow sensor installed on its inner wall. The self-adjusting ventilation assembly includes a rectangular housing with a rectangular movable plate fitted inside. A vertical slot for the movable plate to pass through is provided on the rear side of the rectangular housing. A connecting plate is provided on the rear side of the movable plate. L-shaped mounting seats are provided on both the upper and lower sides of the rectangular housing, and electric cylinders are installed on both L-shaped mounting seats. The movable rods of both electric cylinders are fixedly connected to the front side of the connecting plate. This self-adjusting ventilation volume boiler flue connection structure dynamically adjusts the flue cross-sectional area through the rectangular movable plate, enabling real-time response to boiler load changes and solving the problem of non-adjustable ventilation volume in traditional fixed flue systems.

This utility model discloses a flue gas desulfurization engineering flue sealing door to prevent ash accumulation, relating to the field of flue gas fittings technology. The utility model includes a flue gas desulfurization flue side plate, with a flue opening and through grooves on both sides of the opening on its surface. A frame is fixedly installed on the front side wall of the flue gas desulfurization flue side plate, and a lifting assembly is provided on the frame. A sealing door is fixedly installed on the movable part of the lifting assembly. When the sealing door is opened, the cleaning roller contacts the sealing door surface. Utilizing gear and rack meshing, the cleaning roller automatically rotates to clean the dust, while a dust blowing nozzle simultaneously blows away dust, effectively removing dust from the sealing door surface. A motor drives a threaded rod, causing the movable sleeve and sealing door to move vertically, achieving automatic opening and closing of the sealing door. Combined with the cleaning and dust blowing functions, the entire process requires no manual intervention, improving operational efficiency and safety.

The utility model relates to a kind of combustion boiler furnace device in the field of boiler furnace, including pedestal and support ring, support ring is located on pedestal upside, outer end connection inlet pipe, inner wall installs outlet nozzle, bottom is equipped with limit ring and pedestal upper end insertion joint. Pedestal inner wall installs supporting ring, supporting ring is erected on bucket-shaped inner wall, its bottom side opens blanking port, and periphery is surrounded with annular air pipe, and is connected with air hole. Pedestal outside is equipped with air blower, and is communicated with annular air pipe by air conveying pipe. The device is convenient to disassemble and clean by quick release mechanism, reduces maintenance difficulty;Meanwhile, preheat air in annular air pipe using combustion waste heat, improve air temperature, help natural gas to fire and burn, form good combustion condition, improve combustion efficiency, prolong the service life of device.

The utility model belongs to the technical field of energy equipment relates to a kind of biomass boiler, including biomass boiler ontology, and is equipped with smoke outlet on biomass boiler ontology, and the hearth of biomass boiler ontology is equipped with multiple vertical arrangements, and the smoke baffle for guiding the flue gas in hearth along serpentine path flows to smoke outlet, the nearest smoke baffle of smoke outlet is recorded as smoke baffle a, and gap is left between the upper end of smoke baffle a and the top of biomass boiler ontology, and smoke baffle a is equipped with through-hole, and the height of through-hole is higher than smoke outlet.The utility model is through being equipped with through-hole on smoke baffle a, improves the flue gas temperature of entering SCR reactor, so that the flue gas of final discharge reaches waste gas emission requirement.

The present invention relates to an air supply device (65) for a room heater (1) comprising an air inlet duct (70) configured to open outside the room, the air inlet duct comprising a radial wall (75) defining an inlet volume (80), and an axial wall (85) extending between the radial wall and closing the inlet volume, and a direct air duct (95) configured to supply air to a fireplace, the direct air duct passing through the axial wall and opening into the air inlet duct. The axial wall has at least one opening (90) configured to supply air to the room. A damper (105) is mounted around the direct air duct and is movable between a closed position, in which the damper closes at least one opening, and an open position, in which air can flow through at least one opening.

The present application belongs to the technical field of circulating fluidized bed boiler, and discloses an inner built flap valve and an SCR denitration system thereof, which solves the problems of traditional flap valve, such as easy deformation, poor sealing, easy ash accumulation in shaft sleeve, unadjustable counterweight torque and single function. The inner built flap valve comprises a valve body, a flap block, a valve shaft assembly and a counterweight assembly. The valve shaft assembly supports the flap block and the counterweight assembly at both ends to realize linkage overturning. The flap block is of an integrated thick wall structure and is internally provided with an evaporation zone and the like. The high temperature is used to realize the evaporation of the reducing agent through the heat storage column, and the sealing performance is improved through the two side arc surfaces. The valve shaft assembly adopts a combined anti-ash shaft sleeve to actively discharge ash and prevent jamming. The counterweight assembly can flexibly adjust the counterweight torque to adapt to multiple working conditions. The SCR denitration system uses the flap valve as an evaporator to simplify the structure and reduce the energy consumption. The present application improves the stability and sealing performance of the flap valve, adapts to multiple working conditions, and ensures the stable operation of the boiler and the denitration standard.

The present disclosure relates to the technical field of secondary-air-damper control. Disclosed are a secondary-air-damper control system, method and apparatus, and an electronic device and a storage medium. The system comprises: an air flow monitoring module, a control module, and an opening degree regulation module, wherein the air flow monitoring module is connected to the control module, and the control module is connected to the opening degree regulation module; the air flow monitoring module is used for monitoring a target air flow rate of a secondary air damper and send the target air flow rate to the control module; the control module is used for receiving the target air flow rate, searching for a target opening degree for the secondary air damper on the basis of the target air flow rate, and sending the opening degree to the opening degree regulation module; and the opening degree regulation module receives the target opening degree, and on the basis of the target opening degree, controls the opening degree of the secondary air damper. Compared with the related art, in the embodiments of the present disclosure, a target air flow rate of a secondary air damper is monitored, a target opening degree is found for the secondary air damper, and the opening degree of the secondary air damper is automatically regulated on the basis of the target opening degree, and therefore no manual operations are required and the control effect of the secondary air damper is improved.

Device for arranging on orInsertion into a chimney (12), comprising a first pipe (1), a second pipe (2), and a housing (3) at least partially enclosing both pipes (1; 2), wherein the housing (3) forms a cavity (11) enclosed by the housing (3), wherein the first pipe (1) runs completely through the housing (3) or the first pipe (1) is positively connected to the housing (3), wherein the first pipe (1) projects beyond the housing (3) on two sides (4, 5) of the housing (3), wherein the first pipe (1) has a first opening (7) in its wall (6), wherein the first opening (7) opens into the cavity (11) inside the housing (3) or the housing (3) rests on or is placed on the first pipe (1), enclosing the first opening (7), the second pipe (2) opens into the housing (3) into its cavity (11), the second pipe at the protrudes from the housing (3) at the opening side (4), and at the second tube (3), at the end (8) of which a pull regulator (9) is arranged.

The present application relates to the technical field of boiler combustion, and discloses a combustion system of a pure-burning high-alkali coal boiler, a primary air fan is provided with a primary air volume adjusting valve, an air inlet end of a primary air pipe faces an outlet of a venturi pipe, the primary air pipe is separated from the venturi pipe, the primary air pipe is provided with a rotational flow nozzle, an inner secondary air pipe is connected with the venturi pipe, the primary air pipe is connected with the inner secondary air pipe, an inner secondary air volume adjusting valve is arranged between the inner secondary air pipe and a secondary air fan, an outer secondary air volume adjusting valve is arranged between an outer secondary air pipe and the secondary air fan, the outer secondary air pipe is connected with a tail flue of the boiler through a recirculation air fan, a circulating air volume adjusting valve is arranged between the outer secondary air pipe and the recirculation air fan, the inner secondary air pipe is provided with an inner rotational flow baffle, the outer secondary air pipe is provided with an outer rotational flow baffle and an outer secondary air door; the present application can solve the problems that the pure-burning high-alkali coal boiler is prone to ash deposition and slagging when running at high load, and the NO x emission is high and the combustion stability is poor when running at low load.