76results about "Casings/linings" patented technology

This utility model belongs to the field of heat exchange equipment, and particularly relates to a high-temperature resistant water-cooled wall structure, including a heat insulation layer, a pump body, a channel pipe, and a water-cooled pipe. The pump body is installed on the lower side of the heat insulation layer, with its inlet end extending forward. The channel pipe is fixed to the outlet end of the pump body extending downward. The water-cooled pipe is installed inside the heat insulation layer, and the channel pipe is connected to the cross-shaped pipe at the bottom of the water-cooled pipe to form a flow path for the cooling medium. By setting an electric push rod and a cleaning brush, ash and particulate impurities adhering to the outer wall of the water-cooled pipe can be automatically removed, avoiding a decrease in heat exchange efficiency due to ash accumulation, ensuring that high-temperature gas can fully contact the surface of the water-cooled pipe, significantly improving the heat exchange effect, and extending the service life of the equipment.

The application discloses a kind of ammonia coal mixed combustion test system and its multi-working condition operation method.Belongs to fuel clean combustion technical field, including the experimental furnace body with main combustion zone, reduction zone and burn-out zone, and adjustable center ammonia pipe coaxially arranged in the center of burner;The center ammonia pipe is provided with axial telescopic adjusting mechanism and detachable spray head, and the position of nozzle can be continuously adjusted from main combustion zone to reduction zone.System is equipped with coal gasification chamber and multi-fuel feeding unit, and can independently supply pulverized coal, volatile matter, coal coke and ammonia respectively.The application realizes the staged and zoned reaction simulation of pulverized coal, volatile matter, coal coke and ammonia by decoupling the pyrolysis and combustion process of coal, can carry out three experimental modes of coal and ammonia mixed combustion, volatile matter and ammonia homogeneous phase reaction, coal coke and ammonia heterogeneous phase reaction, and has multiple operation control functions.Provides a compact structure, strong working condition adaptability test platform for in-depth study of ammonia coal mixed combustion mechanism and optimization of low-nitrogen combustion process.

The application discloses a supercritical boiler furnace water wall safety monitoring method, system, equipment, medium and product, relates to the field of data processing and analysis, and comprises the following steps: acquiring monitoring data of electronic expansion indicators and heat flow meters at multiple different positions of a furnace water wall in real time; the monitoring data comprises expansion indication, displacement and heat flow data; stress analysis is performed on the monitoring data based on a stress data analysis system to determine a stress analysis result; and the stress condition of the furnace water wall is monitored according to the stress analysis result and a preset threshold range corresponding to the stress borne by the monitoring point of the furnace water wall, and it is judged whether early warning is needed, so that the stress condition can be effectively reflected, and the failure of the furnace water wall can be effectively reduced.

A cylindrical body includes a plurality of annular members. The annular member each have an outer circumferential wall section, an inner circumferential wall section which is disposed further inward than the outer circumferential wall section and defines a cooling flow path between the inner circumferential wall section and the outer circumferential wall section, and a plurality of cooling fins which are disposed in the cooling path and connect the other circumferential wall section and the inner circumferential wall section; the outer circumferential wall section has a plurality of inlet holes which cause compressed air to be introduced from an intra-case flow path to the cooling path; the inner circumferential wall section has a plurality of outlet holes which cause compressed air to be discharged from the cooling path to a combustion chamber; and the plurality of annular members are connected to each other along an axis X.

A bottom seal for a boiler is provided that includes a first refractory layer, a second refractory layer, a plurality of anchors, and an alloy plate. The first refractory layer is made of a castable refractory material. The second refractory layer is positioned below the first refractory layer. The anchors are configured to support the first and second refractory layers. The alloy plate is configured to be positioned below and support the first and second refractory layers. The first and second refractory layers are configured to seal a bottom opening of the boiler.

A fireplace enclosure is an apparatus that enables the restoration of an existing wood-burning fireplace by providing a clean surface that enables the installation of gas logs in the existing wood-burning fireplace. The apparatus preferably includes a first lateral panel, a second lateral panel, a bottom panel, and an arc-shaped panel. The first lateral panel and the second lateral panel correspond to the sections of the apparatus that cover the lateral walls of the existing fireplace. The bottom panel corresponds to the section of the apparatus that covers the bottom wall of the existing fireplace. The arc-shaped panel corresponds to the section of the apparatus that covers the back wall of the existing fireplace. In addition, the arc-shaped panel increases the structural strength of the apparatus by providing rigidity to the overall structure.

The utility model discloses a water -cooled wall slag cleaning tool, including the control seat, control seat top fixedly connected with the operation handle, control seat inside is provided with three groups interval regulation subassembly, wherein two groups interval regulation subassembly with control seat sliding connection, through along the control seat inside sliding seat inner connecting block debugging both sides slagging pressure shovel's distribution interval, make three groups slagging pressure shovel respectively to three groups water -cooled wall pipeline, then through the depression and promote operation handle along water -cooled wall pipeline outer wall activity, in the process of activity through vibration motor and vibration end connector to vibration contraction seat and sliding guide rod generates vibration power, auxiliary acceleration water -cooled wall pipeline slagging's separation, and in the vibration process, because the elastic connection between sliding contraction seat and take the rod limit seat and the elastic connection effect between pressure shovel connecting platform and vibration contraction seat, reduce the vibration intensity of slagging pressure shovel, avoid the slagging pressure shovel direct transmission vibration impact force when to water -cooled wall pipe causes excessive influence.

The utility model discloses an air cooling type fireproof furnace wall for garbage incinerator belongs to fireproof furnace wall technical field, including the firebrick layer that sets up from furnace wall inside to outside in proper order, air interlayer, heat preservation layer and heat insulating layer, is equipped with air inlet pipe and air outlet pipe respectively on heat insulating layer, is equipped with valve plate in air inlet pipe, and the pivot of valve plate is connected with air inlet pipe through torsional spring, and one end of pivot is equipped with torsion lever, is equipped with hollow tube on heat insulating layer, and one end of hollow tube extends to the inside of air outlet pipe, and pressurized liquid is installed in hollow tube, and piston rod is equipped with sliding seal in hollow tube, and piston rod is contacted with torsion lever, the fireproof furnace wall of the utility model can fill in air to air interlayer through air inlet pipe, and the air of air outlet pipe is discharged, makes the heat on firebrick layer be taken away by the airflow rapidly, to slow down the reaction of firebrick and molten ash, and alleviates the coking of furnace wall.

The utility model provides a kind of boiler separator import furnace wall anti-falling structure, it is related to circulating fluidized bed boiler technical field, including separator main body, import flue, anchor rod, reinforcing mesh and tortoise shell net.The boiler separator import furnace wall anti-falling structure, anchor rod is fixed in specified position, provide support base for subsequent structure, then reinforcing mesh is installed on anchor rod by butt joint hole, then tortoise shell net is sleeved on anchor rod by bushing, and fastening is used using threaded sleeve, finally anti-falling structure surface is daubed refractory material.By the synergistic effect of anchor rod, reinforcing mesh and tortoise shell net, the stability and impact resistance of furnace wall structure are enhanced, the damage of refractory material due to structural stress concentration, airflow scouring, thermal expansion and contraction and other factors is reduced.The stable operation of boiler is ensured, the reliability and service life of equipment are improved, the maintenance cost and production risk of enterprise are reduced, and significant economic benefit and safety benefit are obtained.

The utility model discloses a kind of multilayer composite heat-insulated combustion cavities, it includes hot face layer, the outside of hot face layer is provided with heat-insulating layer, the outside of heat-insulating layer is provided with thermal barrier layer, the outside of thermal barrier layer is provided with cooling layer, the inner surface of heat-insulating layer and the outer surface of hot face layer are conformed, the outer surface of heat-insulating layer and the inner surface of thermal barrier layer are conformed, the outer surface of thermal barrier layer and the inner surface of cooling layer are conformed, the material of thermal barrier layer is reflective heat-resistant metal foil. By the multilayer composite structure of hot face layer, reflective layer, aerogel layer, heat preservation layer and cooling layer, the cavity can adapt to extreme environment, while the material used makes the life of key components be extended, and the weight of structure is greatly reduced, convenient to carry and install;Excellent heat-insulating performance, reduce fuel consumption and cooling demand, will make the use cost of cavity reduce.

The invention relates to a method for clearing accumulated material deposits inside a hearth, comprising: initiating a pre-programmed sequence to position a robot proximate an opening on a recovery furnace wall; positioning an end effector of the robot at a designated angle for accessing the opening; operating the robot to cause the end effector to penetrate the accumulated material deposits; and retracting the end effector.

The utility model provides a kind of bottom plate anti-deformation protection structure of vacuum atmosphere furnace and vacuum atmosphere furnace, belong to heating equipment field.The bottom plate anti-deformation protection structure of vacuum atmosphere furnace includes: tungsten reflector screen, molybdenum reflector screen and water-cooled copper plate assembly.Molybdenum reflector screen and tungsten reflector screen are arranged in parallel alternately;Water-cooled copper plate assembly is arranged in parallel one by one in the combination of tungsten reflector screen, molybdenum reflector screen and bottom plate, and it has flowing cooling medium;The axial center of water-cooled copper plate assembly, molybdenum reflector screen and tungsten reflector screen coincides.The utility model further reduces the heat transferred to bottom plate by the corresponding water-cooled copper plate assembly on the basis of existing structure, the temperature of bottom plate can be reduced to 10~30 ℃, and the total number of tungsten reflector screen and molybdenum reflector screen can be reduced, and the manufacturing cost of water-cooled copper plate assembly is lower than that of single tungsten reflector screen and molybdenum reflector screen, so the manufacturing cost of vacuum atmosphere furnace is reduced.

The utility model discloses a kind of power plant boiler water-cooled wall pipe group quick centering installation device, it is related to boiler installation technical field, to solve the technical problem of current water-cooled wall pipe inconvenient to find centering installation point during installation and thus inconvenient efficiency installation, including positioning structure, the positioning structure includes connecting cylinder, several switching wheels are evenly installed in the adjusting ring, the inside of the adjusting plate is located on adjusting ring and is equipped with limit piece.The utility model has the advantages that water-cooled wall pipe is fixed by the connecting cylinder of bottom, water-cooled wall pipe is moved by adjusting ring connection top, and the adjusting plate in adjusting ring and other structures are positioned quickly to the water-cooled wall pipe moving, after adjusting plate rotates in place, compensation plate fills the gap between two adjacent adjusting plates, ensure that positioning column connects adjusting ring, so that adjusting ring and connecting cylinder have gap, and the two water-cooled wall pipe spot welding fixed can be realized centering installation.

The utility model discloses a kind of low heat value solid waste burners, belong to burner technical field.The hearth corresponding to core combustion zone in the burner is composed of multiple sections from top to bottom in ladder-shaped distribution, the aperture of the inner wall of upper hearth in adjacent two hearths is less than the aperture of the inner wall of lower hearth, and the furnace wall of upper hearth is equipped with air blowing passage, which is communicated with the cold air collecting box located outside the hearth, to blow the cold air outside to the inner wall of adjacent lower hearth.The scheme is improved by the hearth corresponding to core combustion zone, forms gas film on the inner wall of hearth, can effectively prevent high-temperature molten ash from adhering to it, and the structure is relatively simple, and the running cycle is longer.

This utility model discloses a device for preventing displacement of the inner lining of a cylindrical natural gas hot blast stove, relating to the technical field of cylindrical natural gas hot blast stoves. It includes four arc-shaped plates, each with a 90-degree angle. The four arc-shaped plates are tightly attached to the last ring of refractory bricks at the tail end of the hot blast stove lining. Each pair of adjacent arc-shaped plates has a convex joint and a concave joint. The four arc-shaped plates are assembled into a single retaining ring using these joints. Eight sets of right-angle ribs are provided on the inner wall of the four arc-shaped plates. Each right-angle rib is equidistantly welded to the inner wall of the four arc-shaped plates. This utility model can prevent displacement of the refractory bricks in the hot blast stove lining due to thermal expansion, ensuring the lining's firmness and stability. It features a simple structure, convenient installation, and good performance. The 10mm thickness ensures the ribs' resistance to deformation and enhances the constraint effect on the circumferential displacement of the refractory bricks.

This invention provides a method for constructing refractory bricks. The refractory bricks are installed onto L-shaped hooks pre-installed on a water-cooled wall. Filler is then placed between adjacent refractory bricks, and finally, self-flowing castable refractory is poured between the refractory bricks and the water-cooled wall. This method allows the refractory bricks to be fixed to the side of the water-cooled wall in contact with flue gas (i.e., the heat exchange surface) using hooks. This not only prevents high-temperature corrosion of the water-cooled wall by flue gas but also effectively ensures the heat exchange efficiency of the water-cooled wall and extends its service life.

The utility model discloses a kind of waste heat utilization mechanisms of salt-containing waste liquid incineration waste heat boiler, specifically related to waste heat utilization technical field, including heat preservation furnace wall, the waste heat utilization component is arranged in the inside of heat preservation furnace wall;The waste heat utilization component includes front wall membrane type water-cooled wall, the front wall membrane type water-cooled wall is set in heat preservation furnace wall inner wall top, the heat preservation furnace wall inside is provided with middle membrane type wall.The utility model is combined by various heat exchange equipment and the flue design of reasonable, realized multistage recovery to flue gas waste heat, improve heat recovery efficiency, flue gas and full empty membrane type water-cooled wall reverse heat exchange in first flue, increased heat transfer temperature difference, improved heat exchange efficiency, flue gas transverse washes evaporator, superheater etc in second flue, enhanced convective heat transfer effect, so that flue gas heat can be more fully transferred to heating surface, improve the overall heat transfer capacity, further improve heat recovery effect.

This application relates to a composite structure and its construction process for preventing cracking and smoke leakage in boiler wall panels, belonging to the field of boiler equipment maintenance technology. The structure includes a protective plate and an intermediate plate, with the intermediate plate positioned between the old wall panel and the protective plate. One side of the intermediate plate has a connector for inserting into cracks. The connector contains an injection cavity, an injection hole, and a radially expandable support rod, and can be fitted with a thermally expandable elastic ring. During construction, the connector is inserted into the crack, the support rod is anchored, and sealant is injected to fill the gap. The heat from the sealant triggers the elastic ring to expand, enhancing the seal. This application, through a combination of multi-layered panel structure, mechanical anchoring, and chemical sealing, and utilizing smart materials to achieve adaptive compression, effectively solves the problems of stress concentration and poor seal durability in traditional repair methods, achieving long-term and reliable repair of cracks in boiler wall panels.

The utility model relates to the field of once-through boiler discloses a once-through boiler with high -efficient waste heat recovery function, including hearth, the outside of hearth is provided with the air pipe, the right side outside of hearth is fixedly connected with coal economizer through water inlet pipe no.

The application discloses a double-furnace of gas water-cooled premixing staged combustion surface, which comprises a combustion surface part and a boiler furnace part; the combustion surface is provided with a staged premixing combustion surface; the boiler furnace is provided with a double-furnace structure; the combustion surface comprises a water-cooled premixing combustion surface I and a water-cooled premixing combustion surface II; the furnace I is composed of a space surrounded by the water-cooled premixing combustion surface I, a water-cooled tube wall, a water-cooled tube group I, an upper header, a lower header and an intermediate partition screen; the furnace II is composed of a space surrounded by the water-cooled tube group I, the water-cooled premixing combustion surface II, the upper header, the lower header, the water-cooled tube wall and a water-cooled tube group III; the structure design can solve the problems of local over-temperature, high NOx and low thermal efficiency of the traditional furnace, and has the advantages of stable combustion, low nitrogen emission, uniform heat exchange and suitability for high-power manufacturing.

An aerodynamic component (501, 801) of a gas turbine engine (20) is provided and is fittable to a shell (510, 810) having a shell shape (512, 812). The aerodynamic component includes a body (520, 820) having a component shape (522, 822) initially deviating from the shell shape prior to an assembly operation in which the aerodynamic component is to be fit to the shell. Deviation of the component shape from the shell shape aids in an establishment of a final desired shape (530, 830) of the aerodynamic component following the assembly operation.