14results about How to "Reduce soot" patented technology

The utility model relates to the technical field of lithium ion battery manufacturing, in particular to a laser welding hold-down clamp and equipment, and the middle of the laser welding hold-down clamp is hollow to form a laser channel for laser to pass through. And an air blowing channel is arranged at the lower part of the pressing tool for laser welding. Nitrogen serving as shielding gas is blown into the welding point position through the gas blowing channel. A dust suction ring way is arranged in the upper portion of the pressing tool for laser welding, and at least one side of the upper portion of the pressing tool for laser welding is provided with a dust suction opening. And the dust extraction opening, the dust extraction loop and the laser channel are sequentially communicated to form a dust extraction channel. The dust suction opening can communicate with an air suction pump, and negative pressure is provided by the air suction pump, so that smoke dust sequentially passes through the laser channel, the dust suction annular channel and the dust suction opening and then flows out of the laser welding pressing tool. On the whole, a traditional dust extraction channel is improved, so that the dust extraction efficiency and the dust extraction effect are greatly improved, the amount of smoke detained near a welding point position is reduced, the weld penetration stability is high, and the pseudo soldering phenomenon is avoided.

The present invention discloses a metal flux-cored welding wire for laser cladding and a preparation method and application thereof, belonging to the field of additive manufacturing technology. The metal flux-cored welding wire for laser cladding is mainly used for preparing a coating on the surface of a hydraulic support that is resistant to chloride ion corrosion and coal particle wear. The metal wire for laser cladding of the present invention is a flux-cored welding wire, which belongs to a martensitic rust steel type material. By adding alloy elements that improve strength and toughness, the material has good corrosion resistance while having high hardness and plastic toughness, so that it can be prepared into a metal wire by drawing, and the prepared cladding layer can meet the requirements of the hydraulic support for the service environment.

The utility model relates to the technical field of wires and cables, in particular to a low-smoke halogen-free flame-retardant special wire and cable, which comprises a wire core and a cable base layer, the outer wall of the wire core is connected with the cable base layer, a protection structure is arranged on the outer side of the cable base layer, and the protection structure comprises a supporting assembly. The inner wall of the supporting assembly is bonded with the cable base layer, and the outer wall of the supporting assembly is bonded with the protection assembly. The supporting assembly is made of butadiene rubber and has good cold resistance, wear resistance and rebound resilience, the outer wall of the supporting assembly is bonded with the protection assembly, the protection assembly is made of a silicon rubber material, the silicon rubber material is a rubber material with excellent elasticity and compressibility, and when extruded by external force, the supporting assembly is not prone to deformation. Through the high elasticity of the protection assembly and the supporting assembly, the mechanical energy of external force is buffered, and the situation that the wire core is damaged and broken is avoided.

This invention provides a biomass fuel and its preparation method, belonging to the field of waste utilization technology. This invention mixes different waste materials to prepare biomass raw materials, and simultaneously utilizes microbial strains to transform the organic flame retardants contained in the waste raw materials into new flammable agents through biochemical reactions. The prepared biomass fuel has high calorific value, low smoke and dust, and excellent combustion performance, making rational use of various waste materials, and is environmentally friendly, efficient, and energy-saving. The results of the embodiments show that the biomass fuel prepared by this invention has a calorific value of 35.6 MJ / kg, a calorific value of 4100 cal / g, a combustion efficiency of 99.1%, and low smoke and dust.

The present invention discloses a coal utilization system coupled with an ultra-low emission coal gasification-gas boiler, wherein the coal utilization system is mainly composed of a coal powder bin, a vertical strong vortex liquid slag removal gasifier, a slag pool, a desuperheater, a bubbling fluidized bed dry desulfurization desulfurization tower, a separation ash + desulfurization product bin, a high-temperature low-oxygen coal gas burner, a MILD gas boiler with an SNCR device, a high-temperature air duct, a high-temperature flue gas duct, a bag filter, an induced draft fan, a chimney and other equipment. The system uses high-temperature molten air gasification technology for coal gasification, and the generated hot coal gas is desulfurized by a pre-arranged bubbling fluidized bed desulfurization tower, and then MILD combustion and heat release are carried out in a MILD gas boiler with an SNCR device equipped with a high-temperature low-oxygen coal gas burner. The core of the present invention is to innovatively propose a coal utilization system coupled with a new type of pre-desulfurization ultra-low emission coal gasification-gas boiler that integrates multiple ultra-low emission advantage technologies, and the system has the advantages of low cost, low water consumption, and low pollution.

The utility model discloses a waste heat boiler capable of preventing a tube panel from slagging, and belongs to the technical field of metallurgical equipment. The device comprises an uptake flue, a radiation chamber, a convection chamber and an ash bucket, the ash bucket is arranged on the lower portion of the radiation chamber, a baffle I and a heat exchange tube panel I are sequentially arranged on the upper wall of the radiation chamber in the flue gas flowing direction, and a heat exchange tube panel II is arranged on the upper wall of the convection chamber. A baffle II is arranged on the upper wall of the outlet of the radiation chamber, and a streamline baffle is arranged on the lower wall of the radiation chamber below the baffle I. The structure is optimized on the basis of a traditional horizontal waste heat boiler, the group of streamline baffles are arranged below the baffle I, the slag solidification tube panel is additionally arranged between the baffle I and the heat exchange tube panel I, and the baffle II is additionally arranged at the outlet of the radiation chamber, so that the heat exchange efficiency and the smoke dust recovery rate of the waste heat boiler are effectively improved, abrasion caused by particles is reduced, and the service life of the waste heat boiler is prolonged. And the service lives of the waste heat boiler and core parts thereof are prolonged.

A high-temperature SCR (Selective Catalytic Reduction) denitration system of a biomass incinerator relates to the technical field of denitration of biomass incinerators, and is characterized in that an SCR reactor is arranged between a boiler body superheater and a high-temperature economizer, and flue gas generated by the biomass incinerator is directly heated by the superheater and then enters the SCR reactor for denitration; an alkali metal detection system and a catalyst cleaning system are arranged to prevent catalyst alkali metal ion poisoning, in addition, a pre-desulfurizer is arranged in front of the SCR reactor for desulfurization treatment to prevent denitration catalyst sulfur poisoning, and meanwhile, a multi-tube dust remover is arranged between the pre-desulfurizer and the SCR reactor to improve the purification rate of smoke dust and particulate matter. According to the invention, heat compensation and temperature rise are not needed, the system resistance loss is small, the comprehensive energy consumption of flue gas desulfurization and denitration can be reduced, and the denitration catalyst alkali poisoning can be effectively prevented.

The present invention proposes a welding method for recycling residual light to preheat a weld. The method includes workpiece preparation, initializing welding parameters and operating parameters, welding point division, starting welding, monitoring the welding process, welding quality detection, and weld defect repairing steps. By adding a preheating device with an arc structure, not only the impact of spatter and smoke generated by the laser welding process on the welding quality and the working environment is solved, but also the reflected laser is effectively recycled and utilized as a preheating heat source, which greatly reduces the waste of welding energy and effectively avoids the damage of the laser head to the reflected laser. At the same time, the preheating speed is accurately adjusted according to the welding parameters to ensure that the weld reaches the ideal preheating temperature before welding. Appropriate adjustment of the preheating speed can ensure that the laser residual light is effectively recycled and utilized, thereby improving energy utilization efficiency. The preheating treatment reduces the temperature gradient between the weld and the base material, thereby reducing the thermal stress caused by rapid heating and cooling and improving the quality of the weld.

The invention belongs to the field of submerged arc welding machines and discloses an electrical engineering automatic welding machine which comprises an adjusting device, a base is arranged in the middle of the adjusting device, wheels are rotatably connected to the outer end of the base, a storage groove is formed in the middle of the upper end of the base, and a containing groove is formed in the position, located at the lower end of the storage groove, of the middle of the base. A cover plate is fixedly connected to the upper end of the containing groove, a sleeve is fixedly connected to the middle of the upper end of the cover plate, an inner threaded sleeve is rotationally connected to the upper portion of the outer end of the sleeve, a threaded rod is in threaded connection with the middle of the inner threaded sleeve, and a material pumping module is fixedly connected to the outer end of the sleeve. The welding module can be always wrapped with a welding flux layer during overhead welding through the auxiliary structure, welding arc light and smoke are reduced, the movement speed of the welding rod and the movement speed of the adjusting device are synchronous through the transmission device, and the welding stability is improved.

The invention discloses anti-blocking feeding equipment for silica powder processing of a dry-type transformer, and relates to the technical field of feeding equipment, and the anti-blocking feeding equipment comprises a composite mechanism. According to the anti-blocking feeding equipment for dry-type transformer silicon micro powder processing, through the design of a composite mechanism, materials enter the composite mechanism from the top of the processing mechanism, a motor drives a shaft core to control blades to rotate, so that the effect of conveying the materials is achieved, the materials are discharged from one side of a discharging pipe, follow-up processing is facilitated, and a rubbing mechanism is arranged on the outer sides of the blades; the rubbing effect is improved in the material conveying process, the situation that materials are affected with damp and agglomerate is avoided, the conveying efficiency is improved, the lifting mechanism is connected to one side of the exterior of the barrel-shaped shell, so that the effect of lifting the equipment is achieved, the effect of meeting the operation requirement is achieved, and the space area is reduced; the middle stability of the equipment is improved, and the situation that the service life of the equipment is affected due to the fact that the middle of the equipment is soft due to overlong stroke of the equipment is avoided.

The invention provides a flux-cored wire and a preparation method and application thereof, and particularly relates to the field of welding materials. The flux-cored wire comprises a steel belt and a flux core wrapped in the steel belt, and the flux core comprises, by mass, 33%-35% of micro-carbon ferrochrome, 21%-23% of calcium fluoride, 11%-13% of nickel powder, 12%-14% of rutile, 7%-9% of iron-molybdenum alloy, 3%-5% of manganese powder, 2%-4% of ferrotitanium, 1%-2% of ferrosilicon and the balance iron powder. The flux-cored wire can be suitable for all-position welding, is stable in welding arc, easy in slag removal, smooth in wire feeding and attractive in weld joint forming, has better hardness and excellent impact resistance and crack resistance, has the weld joint hardness up to 68 HRC, is applied to turbine blade repair, and can greatly prolong the service life of turbine blades.

The invention relates to a method and a device for controlling an internal combustion engine (1) having a pre-chamber spark plug (3) and a hook-shaped spark plug (4) in a combustion chamber (2). In a first operating region of the internal combustion engine (1), combustion in the combustion chamber (2) is triggered by the pre-chamber spark plug (3), and in a second operating region of the internal combustion engine, combustion is triggered by the hook-shaped spark plug (4).

The utility model relates to the field of abrasive wheel cutting blade structures, in particular to an abrasive wheel cutting blade structure which is safe to use. The technical problems that most grinding wheel cutting blade structures are only provided with clamping installation structures, blasting is prone to occurring, and the safety performance is low are solved. According to the technical scheme, the grinding wheel cutting disc structure safe to use comprises a grinding wheel cutting disc equipment body. By arranging the anti-explosion protection cooling assembly, an anti-explosion protection effect can be achieved on the cutting blade, meanwhile, the grinding wheel cutting blade which is being cut can be cooled in time, the problem that a blade or an appliance is damaged due to the fact that the temperature is too high is solved, and the anti-falling assembly can be installed in a reinforced mode according to needs. The grinding wheel cutting tool is stably fixed in a multi-layer mode, a blade is prevented from sliding off to cause injury to people, the reinforced buffering cutting assembly has high strength and high toughness, the high-quality grinding wheel cutting blade can reduce accident risks, and fragment splashing, smoke dust and sparks in the cutting process are reduced.