19results about How to "Low ventilation resistance" patented technology

The invention discloses a low-carbon-oriented transformer substation ventilation and heat dissipation optimization design method. The method comprises the following steps: S1, collecting various information of a transformer substation building; s2, establishing a carbon emission calculation model; the method is suitable for the technical field of transformation of the transformer substation, multiple factors such as building scheme optimization, skin function optimization, internal function optimization and meteorological conditions are fully considered, optimization design is provided, ventilation resistance is reduced, heat dissipation efficiency is improved, energy consumption of a ventilation and heat dissipation system is reduced, and the method is suitable for popularization and application. Therefore, carbon emission is reduced, the temperature of a power equipment room of the transformer substation is reduced, equipment overheating, performance reduction and even damage caused by too high temperature can be reduced, efficient operation of a ventilation and heat dissipation system is achieved, energy consumption and carbon emission are reduced, and the purposes of low carbon and environmental protection are achieved.

The invention provides a medium-speed coal mill nozzle ring and a design method thereof, and relates to the technical field of coal mills, the nozzle ring comprises a moving ring, a static ring, a cover ring and a support, the moving ring is connected with a millstone through a bolt, the moving ring is composed of an inner cone, a middle cone, an outer cone and blades, and a first blade is arranged between the inner cone and the middle cone of the moving ring; a first blade is arranged between the middle cone and the outer cone, a second blade is arranged between the middle cone and the outer cone, the first blade and the second blade are in a space twisting mode, and the lower portion of the first blade and the lower portion of the second blade vertically extend into the air chamber and can evenly guide airflow in the annular air channel to all cavities of the movable ring. The edges of the movable ring, the static ring and the cover ring form a labyrinth type sealing structure, the nozzle ring reduces gap air leakage by increasing the air stroke, controlling the gap size and increasing the stroke direction, and meanwhile the probability that pebble coal enters a sealing gap can be reduced through the cover ring. The problems that due to the fact that an internal flow field of an existing medium-speed coal mill seriously deflects, local abrasion is serious, and unorganized air leakage is high are solved.

This utility model relates to the field of duct technology, specifically to a duct with adaptable connectors, including a duct body. Connector 1 and connector 2 are fixed to both ends of the duct body. Connector 1 has an integrally formed alignment plate on its surface, and connector 2 has an alignment slot on its surface. When two sets of duct bodies are assembled end-to-end, the beneficial effect is that by providing connector 1 and connector 2 at both ends of the duct body, with connector 1 having an integrally formed alignment plate and connector 2 having an alignment slot, the alignment plate is inserted into the alignment slot during assembly. Since the alignment plate is annular and the alignment slot is annular, this structure ensures accurate alignment of the two sets of duct bodies, avoiding misalignment during assembly, thereby ensuring uniform airflow distribution in the ventilation system, reducing ventilation resistance, and improving ventilation efficiency.

The utility model belongs to the field of coal mill pulverizing systems, and provides an efficient rotary separator which comprises a shell, a driving motor, a rotating assembly and an expansion type distribution box. The driving motor is positioned above the expansion type distribution box and is used for providing power; the rotating assembly is located in the middle of the shell and used for separating pulverized coal, and the driving motor is connected with the rotating assembly; the expansion type distribution box is located above the shell and used for distributing and discharging the pulverized coal separated out by the rotating assembly. The expansion type distribution box comprises an inner cone and an outer cone, the inner cone and the outer cone are in an inverted cone shape, an annular area for air powder flow to pass through is formed between the inner cone and the outer cone, and the horizontal section area of the annular area is gradually increased from bottom to top. According to the expansion type distribution box, the inner inverted cone structure and the outer inverted cone structure are adopted, the inner cone can effectively protect the hollow shaft from being blown and damaged by pulverized coal, the equipment safety is improved, and the air volume deviation and the component deviation of the multiple pulverized coal outlets are reduced.

The utility model provides a fan room for an automobile transport ship cargo hold ventilation system, which comprises a fan room shell and a fan, the fan room shell is arranged on the upper end face of a cargo hold top deck, a cargo hold air inlet is arranged on the cargo hold top deck, the fan is arranged at the cargo hold air inlet, and an air outlet of the fan is arranged opposite to the cargo hold air inlet. A structure air duct extending downwards is arranged in the cargo hold and located under an air inlet of the cargo hold. A louver used for air inlet is arranged on the fan room shell and comprises a louver body and a louver cover body, the louver body is obliquely arranged towards the side away from the fan room from top to bottom, and the upper end of the louver cover body is rotationally connected with the upper end of the louver body. The fan room for the cargo compartment ventilation system of the automobile transport ship has the advantages of being compact in structure, small in occupied space in the cargo compartment, low in cost, high in noise control capacity, convenient to build and construct and the like.

The utility model discloses a multichannel heat dissipation casing structure of inflator pump, concretely relates to inflator pump technical field, including the shell, is provided with the inflator pump main part outside the shell, and the output fixedly connected with the air outlet pipe of inflator pump main part, the top fixedly connected with two positioning frame of shell, the fixedly connected with the handle of positioning frame inboard, handle inboard and air outlet pipe outside sleeve joint, the fixedly connected with two supports of inflator pump main part bottom, the fixedly connected with the bottom plate of support lower surface, the fixedly connected with a plurality of cushion block of bottom plate bottom, the fixedly connected with the air intake mechanism of bottom plate inboard, the top is provided with the heat dissipation mechanism of shell. The utility model utilizes a plurality of trapezoidal air inlet cover to accelerate airflow flow and enhance the penetrating power, improve internal air flow field, reduce ventilation resistance, combine top inclined top cover, heat conduction fin and opening design simultaneously, effectively discharge hot air, avoid heat accumulation, optimize the heat dissipation air duct, realize uniform heat dissipation, maximize the fan air volume and reduce airflow waste.

The application discloses a kind of double-fan sintering machine group single-fan operation thick material layer sintering device and method, belong to metallurgical sintering technical field.The technical scheme of the present application mainly includes: first isolation stops fan and adjusts valve baffle to complete flue gas flow balance, optimizes raw material ratio and moisture to reduce material layer resistance, adopts double-layer loose material to improve ventilation condition, time-sharing period dynamic adjustment fan air pressure adapts sintering process, combined with whole system air leakage control and sintering endpoint linkage regulation and control, without modifying main equipment can realize 800-920mm thick material layer stable sintering.The present application solves the problem of insufficient air volume, uneven airflow distribution, uneven thick material layer sintering, large operating condition fluctuation and high energy consumption when the double-fan sintering machine group operates with single fan, can improve the quality of sintered ore, reduce production energy consumption, and ensure continuous operation of production line during equipment maintenance and fault period.

The utility model relates to a ventilation structure of ship cabin belongs to ship technical field, including first ventilation pipe (1) and second ventilation pipe (2), first ventilation pipe (1) one end is equipped with ventilation opening (17), ventilation opening (17) is equipped with the ventilation cover (8) of openable, realizes exhaust and waterproof. First ventilation pipe (1) other end and second ventilation pipe (2) one end are connected through connecting mechanism (4), connecting mechanism (4) includes first flange (6) and second flange (7), through setting a group of flanges between first ventilation pipe (1) and second ventilation pipe (2), form detachable structure, convenient welding, polishing and coating after welding, second ventilation pipe (2) other end is connected with reducing adapter (5), be used for ventilation cross section sudden change problem, reduce ventilation resistance.

The utility model relates to the field of seat ventilation, in particular to a novel seat air suction system which comprises a foaming part, a sealing plate and a fan, a ventilation groove is formed in the B face of the foaming part, a through ventilation hole is formed in the groove bottom of the ventilation groove, the sealing plate is connected with the foaming part and covers the ventilation groove, the sealing plate is provided with a ventilation opening, and the fan is connected to the ventilation opening. The sealing plate can comprise a felt plate and a fixing plate, the fan is connected with the sealing plate through rubber nails, the fan further comprises a machine shell, a connecting block, a clamping block and other structures, and the fan can be a vortex fan or a butterfly fan. The technical effects that effective air suction is achieved through reasonable structural design, and the seat ventilation effect is optimized are achieved.

The utility model relates to a structure of reducing return air passage ventilation resistance of non - coal mine belongs to ventilation structure technical field, including wall, false roof, the outside of wall close to lower air duct section is equipped with gangue filling upper air slope, the outside of wall close to upper air duct section is equipped with gangue filling lower air slope, and the false roof includes the steel rail support, anchor net no.

This invention discloses an anti-corona insulated permanent magnet motor, relating to the field of permanent magnet motor technology. It utilizes the motor's temperature rise to drive the expansion of a thermal expansion medium, and through a telescopic component, sliding rod, and adjusting ring, moves an adjusting block, allowing the adjusting port to automatically change its flow area according to temperature variations. When the airflow is low, a relatively concentrated airflow is formed, increasing the airflow distance; when the airflow increases, ventilation resistance is reduced, improving the overall ventilation capacity of the heat dissipation duct. When the motor speed decreases and the fan's airflow capacity weakens due to a sudden increase in load, but the heat generation remains high, the liquid cooling circuit can be automatically activated based on the temperature rise, allowing air cooling and liquid cooling to work together, avoiding reliance solely on shaft speed for heat dissipation. The coolant flows sequentially through the front cooling ring, cooling channel, and rear cooling ring, absorbing heat from the front, outer periphery, and rear end regions of the stator assembly, respectively. Combined with the external heat dissipation duct of the housing, this forms a cooling path that integrates internal and external cooling, and end and outer periphery cooling.

The multifunctional mining fan mesh enclosure combination device comprises a fan cover barrel and a baffle, a connecting plate is arranged at the bottom of a barrel body of the fan cover barrel, the fan cover barrel is installed at an air outlet of a fan through the connecting plate, a fixing plate is arranged at the top of the barrel body and is of a semicircular ring structure, and a baffle containing groove is further formed in the top of the barrel body; a baffle is installed in the baffle containing groove and limited and fixed through a first fixing plate and a second fixing plate. And the baffle plates comprise a drop barrier plate, an anti-explosion baffle plate, an anti-oxidation baffle plate and an activated carbon baffle plate, and the baffle plates are inserted into the baffle plate placing grooves. The device can cope with complex and changeable underground environments, is simple in structure, flexible to use and high in adaptability, reduces ventilation resistance of the fan, improves anti-explosion capacity of the fan, eliminates the hidden danger that blades of the fan hurt people, effectively improves use safety of the fan, can prolong service life of the fan, and is suitable for popularization and application. And meanwhile, the fan is used for treating some underground toxic and harmful gases, so that safety guarantee is provided for underground construction.

The utility model relates to the technical field of corollary equipment of sintering machines, and particularly discloses a material distributing device for a belt type sintering machine, which comprises a blanking component, an obliquely arranged sieve plate positioned under the blanking component, a conveying seat positioned under the sieve plate, and a material conveying belt arranged in the conveying seat and opposite to the moving direction of a grate trolley, side discharging openings are formed in the two side faces, away from the lower inclined end of the screening plate, of the conveying base correspondingly, guide plates with the outer ends inclining downwards are installed in the side discharging openings, an offcut guide plate attached to the upper surface of the conveying belt is arranged at the upper end of the conveying base, and the outer end of the offcut guide plate extends into a gap between the conveying belt and the side wall of the conveying base. According to the material distributing device, the material layers can be laid in an up-and-down layered mode according to the size of materials, the ventilation resistance of the whole material layers is reduced, large-pore parts at the side ends of the material layers can be filled, the ventilation resistance of the whole material layers is consistent, and the problem that decarburization sintering is not uniform is effectively solved.

A low-resistance powder concentrator rotor structure, a rotor upper cover plate, a rotor middle plate and a rotor lower cover plate are arranged from top to bottom on the outside of a rotor shaft sleeve and a rotor cone, the rotor upper cover plate and the rotor middle plate are connected with the rotor shaft sleeve or the rotor cone through a rotor connecting plate, and the rotor lower cover plate is directly connected with the rotor cone; a plurality of inclined grooves are formed on the rotor upper cover plate and the rotor middle plate; the rotor connecting plates are arranged in pairs, have the same shape and are symmetrical about the rotor axis; the shapes of the adjacent two rotor connecting plates are different, the included angles with the horizontal plane are different, and the rotor connecting plates are arranged in the form of vertical plates, so that the high-speed airflow in the rotor cage is hindered and scattered. The present application interferes with the generation of the resistance surface of the connecting part position by the special connecting plate and vertical rod arrangement, so that the number of the connecting parts in the same plane or cone surface is small, the ventilation cross-sectional area is increased, and the power consumption of the vertical mill system fan is reduced.

The invention discloses a method for determining the opening area of an adjusting roadway air door, and relates to the technical field of mine ventilation. The method comprises the following steps that S1, the size and the installation position of the adjusting air door needing to be installed are determined; s2, the air volume needed by the roadway where the adjusting air door is installed is calculated; s3, drawing a two-dimensional CAD plane graph of the mine; s4, adopting an analogue simulation method, initially setting the maximum opening area of the adjusting air door, and simulating and calculating the air volume passing through the roadway at the position; s5, adjusting the opening area of the adjusting air door according to the air volume required by the roadway until the air volume passing through the roadway is the required air volume; s6, multiple times of simulation experiment measurement are carried out, and the opening area of the actual adjusting air door of the mine is adjusted according to the simulation calculation result; and S7, providing a basis for setting the opening area of the mine actual adjusting air door. The method has the main advantage that the size of the opening area of the adjusting air door is determined through a three-dimensional analogue simulation method. The economical and effective design of the air volume regulation and control by the regulating air door is realized, and an effective guarantee is provided for safe production of operators.

This application relates to the field of mine transportation technology, and in particular to a mine transportation system. The mine transportation system includes an inclined shaft, a set-off roadway group, a monorail track, and a roof support structure. The inclined shaft extends at an angle. The set-off roadway group includes a set-off yard and a connecting roadway. The set-off yard curves and connects the inclined shaft, the north wing roadway working face, and the south wing roadway working face. The intersection of the set-off yard and the inclined shaft is the first junction. The connecting roadway connects the inclined shaft and the set-off yard. The intersection of the connecting roadway and the set-off yard is the second junction, and the intersection of the connecting roadway and the inclined shaft is the third junction. The second junction is located between the south wing roadway and the north wing roadway, and the second junction is spaced between the first and third junctions. Monorail tracks and roof support structures are installed at the top of each roadway. This mine transportation system not only improves the transportation efficiency of the monorail locomotive but also significantly optimizes its performance in transportation, roof support management, and ventilation.

The utility model relates to the technical field of ventilation and noise reduction of liquid cooling equipment, and discloses an energy storage liquid cooling unit noise reduction structure suitable for high wind speed and low pressure loss ventilation and noise elimination, which comprises an exhaust channel, an air inlet channel, an upper ventilation static pressure cavity, a lower ventilation static pressure cavity, a slide rail type noise elimination blade assembly, an insertion type noise elimination module, an anti-bird net and a drainage structure. The air exhaust channel and the air inlet channel are provided with the trapezoidal perforated silencing pieces and the sliding rail plug-in type silencing blades correspondingly, the airflow direction is optimized through the static pressure cavity, and pressure loss is reduced. And the silencing structure adopts a modular design, so that quick disassembly, assembly and maintenance are facilitated. The anti-bird net and the water guide plate enhance the outdoor adaptability of the equipment. The structure has the advantages of small ventilation resistance, good noise reduction effect, convenience in assembly, safety, reliability and the like, and is suitable for ventilation and noise elimination application scenes of high-power liquid cooling equipment.