20results about How to "Reduce wind pressure" patented technology

The invention discloses a fan blade forward and reverse rotation adjustment protection method and system under the environment of too large wind speed and wind sand. The system comprises a power source, a PLC control system, fan blades, a touch screen, a stepping motor, a closed-loop stepping driver, an integrated vibration transmitter and a wind speed sensor. Wind speed monitoring is carried out through a wind speed sensor, vibration monitoring is carried out on fan blades through an integrated vibration transmitter, the wind speed sensor and the integrated vibration transmitter are in signal transmission connection with a control system, and a closed-loop stepping driver of a stepping motor for driving the fan blades is in signal transmission connection with the control system. The control system sends out a pulse or a control signal to control the closed-loop stepping driver, and the closed-loop stepping driver drives the stepping motor to act so as to adjust forward and reverse rotation of the stepping motor in wind and sand environments. The environment state of the fan can be judged by detecting the wind speed and the wind and sand, so that the aim of protecting fan blades by adjusting the reverse rotation of the stepping motor in the wind and sand environment is achieved.

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 relates to the technical field of field fire control, in particular to a fire retardant spraying device for forest and grassland fire prevention. According to the technical scheme, the fire retardant spraying device for forest steppe fire prevention comprises a base, mounting mechanisms are arranged on the front side and the rear side of the base, a moving mechanism is arranged at the upper end of the base, and the moving mechanism comprises a supporting column, a limiting rod, a sliding block, a sprayer, an adaptive groove, a motor, a gear, a rack, a sliding groove and a sliding block; supporting columns are connected to the left side and the right side of the upper end of the base at equal intervals, two limiting rods are connected between the two supporting columns, sliding blocks are slidably connected to the outer ends of the two limiting rods, and sprayers are connected to the outer sides of the sliding blocks. By arranging the moving mechanism, the sprayer can move back and forth, so that a target area is quickly and repeatedly sprayed, the spraying efficiency is improved, the wind pressure generated when the vehicle speed is slightly high can be reduced in cooperation with the windproof mechanism, and the spraying quality is guaranteed.

The invention provides a damping-down large-diffusion recovery dust removal system which comprises a diffusion pipe, the diffusion pipe is arranged at the top of a blast furnace, the diffusion pipe is communicated with a nitrogen tank and a dust remover through a nitrogen replacement loop and a damping-down gas loop respectively, and the nitrogen tank is further communicated with the dust remover through a nitrogen ash removal loop; damping-down coal gas is connected into a dust remover through double bleeding pipes at the furnace top, bleeding is conducted through the dust remover after damping-down is completed, damping-down recycling operation is added on the basis of damping-down safe operation, air pressure of an air opening is controlled and reduced, top pressure is reduced, residual coal gas at the furnace top is recycled through a damping-down ejection system, and after the bleeding condition is met, the newly-added dust remover is started to purify residual smoke dust. Starting furnace top large diffusion to complete a damping down process; the system is matched with a damping-down, diffusing and recycling system, part of gas which cannot be recycled is purified and discharged, air pollution is reduced, safe use is guaranteed, compared with the prior art, the system is more mature, and visual pollution and environmental pollution caused by secondary emission are avoided.

The application discloses a zero-loss deep current-limiting protection device, and relates to the technical field of protection devices.The device comprises a base, a control cabinet is arranged on one side of the top end of the base, a plurality of protection devices are arranged on one side of the control cabinet, and a refrigeration mechanism is arranged in the control cabinet.The refrigeration mechanism comprises a gas feeding pipe, a refrigeration device, an arc-shaped pipe, a flow guide pipe, a guide plate and a partition plate, the refrigeration device is arranged at the bottom end in the control cabinet, and the gas feeding pipe is arranged at the bottom end of the refrigeration device.The protection device comprises a fixing seat, a quick circuit breaker, a cylinder-type converter and a current-limiting reactor, the bottom end of the fixing seat is in contact with the top end of the base, and the quick circuit breaker is fixedly connected to the top end of the fixing seat.The zero-loss deep current-limiting protection device can guarantee the cooling effect, reduce the influence of liquid water on internal elements, and can complete the closing and opening operations in a short time because the vortex disc force direction is coaxial with the moving contact movement direction.

The utility model discloses an integrated special-shaped lens structure which is characterized in that a lens is provided with a left piece and a right piece which are integrally formed, the middle of the lens is provided with a receding notch corresponding to the nose, the positions, close to the nose, of the lower edges of the left piece and the right piece extend downwards, and the lower edges of the left piece and the right piece gradually incline upwards from the ends close to the nose to the ends away from the nose. And the lower edges of the left piece and the right piece also form turnup edges which are turned outwards, and the overall transverse camber of the lens is 5.5 and the longitudinal camber of the lens is 0. The utility model also discloses a pair of glasses applying the integrated special-shaped lens structure. By means of the structure, the effects of large-size comprehensive shielding, protection, ventilation, fogging prevention and more comfort can be achieved.

The utility model relates to high -speed railway road sound barrier technical field, concretely is a kind of high-speed railway road sound barrier with wind -guiding structure, the lower portion of stand is equipped with rigid pedestal one, and rigid pedestal one and stand are inlayed connection, the rear end of adjusting swivel rod is rotatably connected in adjusting swivel rod, the upper portion of adjusting swivel rod is equipped with adjusting nut, and adjusting nut and adjusting swivel rod are welded, the middle portion of adjusting swivel rod is equipped with fastening nut, and fastening nut and adjusting swivel rod are threadedly connected, the lower portion of adjusting swivel rod is equipped with support rod;Beneficial effect is: stand realizes length adjustment by adjusting swivel rod in the telescopic support rod, after fastening nut locking, and rigid pedestal two form triangular support structure, enhance wind load capacity;Air deflector realizes airflow self-adapting deflection by return spring, and air deflector gap formed by cooperation connecting rod effectively reduces wind pressure, simultaneously sound-absorbing board has noise reduction function, and overall structure gives consideration to stability and functionality.

A rhombic outer facing panel curtain wall structure and a construction method thereof, comprising a keel framework and a curtain wall panel; the keel framework is a rhombic grid structure, and the top angle of the rhombus is 60 degrees; the keel framework comprises a main keel and a secondary keel; a clamping strip is arranged on the outer side of the main keel and the secondary keel along the long axis of the corresponding keel; a strip-shaped groove is arranged on the outer side of the clamping strip; the curtain wall panel is rhombic, the four peripheral edges of the curtain wall panel are respectively bent inward to form a flange; the flange is correspondingly inserted into the strip-shaped groove and is fixed with the clamping strip through a fastener; a small hole is arranged on the panel surface of the curtain wall panel at intervals, and a recess is arranged at the lower part of the curtain wall panel; the vertical section of the recess is polygonal; a recess groove is arranged on the vertical side wall of the recess; a decorative lamp is installed in the recess groove, and a transparent cover is arranged at the slot opening of the recess groove. The technical problem that the panel of the traditional aluminum plate curtain wall is a two-dimensional plane structure, has no novel visual sense and cannot meet the light effect of the project is solved.

The invention relates to the technical field of glass production equipment, in particular to high-precision tempered glass curved surface forming equipment which comprises a machine body, a first roller way and a second roller way and further comprises an air inlet channel, a flexible shaft, a fixing rod, a driving unit, an air outlet channel, a movable assembly and a flow blocking assembly. The first roller way and the second roller way each comprise a plurality of sets of T-shaped blocks connected in sequence, the air inlet channels are connected with the T-shaped blocks, the fixing rods penetrate through the T-shaped blocks, the driving units are arranged on the fixing rods and connected with the flexible shafts, the T-shaped blocks are hollow, open grooves are formed in the ends of the T-shaped blocks, and the air outlet channels are arranged in the T-shaped blocks. Through the driving unit and the flow blocking assembly, the wind direction and the wind pressure of cold air can be dynamically adjusted in the process that the roller drives the glass to move back and forth for cooling, so that the wind pressure is minimum when the cold air directly blows the glass, and the wind pressure is increased when the air outlet channel obliquely blows towards the movement direction of the glass; and the forming precision and the forming efficiency of the glass curved surface are effectively ensured.

The invention discloses a noise reduction food processor which comprises an air outlet structure arranged in an air outlet channel, the air outlet structure comprises at least two flow channels, each flow channel is internally provided with at least two communicated valve units, each valve unit comprises a flow distribution column, a first enclosure wall and a second enclosure wall, and the first enclosure wall and the second enclosure wall are arranged on the two sides of the flow distribution column. A first branch flow channel is formed between the first surrounding wall and the flow dividing column, a second branch flow channel is formed between the second surrounding wall and the flow dividing column, a flow dividing position is formed at an inlet of the valve unit, and an obtuse included angle is formed between a tangential path extending from the flow dividing position to the first branch flow channel and a tangential path extending from the flow dividing position to the second branch flow channel. The airflow flowing in from the flow dividing position comprises main airflow flowing along the first branch flow channel and auxiliary airflow flowing along the second branch flow channel, and the main airflow and the auxiliary airflow intersect at an acute angle. According to the food processor, the optimized air outlet structure is adopted, and the heat dissipation effect and the noise reduction effect can be optimized in the heat dissipation process of the motor.

The invention relates to the technical field of overhead stranded wires, and particularly discloses a wear-resistant overhead stranded wire and a preparation method thereof.The wear-resistant overhead stranded wire comprises an aluminum pipe, six aluminum wires are arranged on the outer side of the aluminum pipe at fixed intervals along the center axis of the aluminum pipe, the six aluminum wires do not make contact with one another, the aluminum wires are arranged in a spiral shape, and the aluminum wires are wound around the aluminum pipe. The inner side surface of the aluminum wire is attached to the outer surface of the aluminum pipe. The stranded wires are arranged in a spiral staggered manner, so that the adjacent aluminum wires are not in contact with each other, the situation that friction is generated between the stranded wires due to shaking of the stranded wires when the stranded wires are used in strong wind areas all the year round is avoided, the service life of the stranded wires is greatly prolonged, meanwhile, the adjacent stranded wires are fixed through the stranded plates, and the service life of the stranded wires is prolonged. The adjacent aluminum wires are fixed through the spiral stranded plates, so that the stranded plates and the aluminum wires are combined into a tube shape, and the structural stability of the stranded wires is greatly improved.

The present application relates to visual detection mechanical equipment technical field, especially relates to a kind of belt composite visual screening machine, including workbench and install on the workbench belt conveying line, first visual screening matrix, second visual screening matrix, pneumatic discharge mechanism, by improving discharge passage to swing adjustment, when blowing out workpiece by air blowing nozzle blowing, discharge passage will receive instruction simultaneously, swing to horizontal state, workpiece is received, since receiving, airflow penetrates discharge passage, and after receiving workpiece in discharge passage, it will quickly change to inclined state, originally horizontal penetration airflow is truncated by inclined discharge passage, directly reduce airflow velocity, so that the speed of workpiece changes with airflow, quickly reduce, then workpiece is exported along the inclined discharge passage, ensure the stability of workpiece output, also reduce the probability of appearance scratch and damage of workpiece due to high-speed impact discharge passage.

The invention relates to the field of steam condensers and auxiliary devices, in particular to an arc-shaped wind-shield wall structure and a direct air cooler, the arc-shaped wind-shield wall structure comprises lower walls, upper walls and arc-shaped walls, the number of the lower walls, the number of the upper walls and the number of the arc-shaped walls are the same and are arranged in the vertical direction, the number of the lower walls, the number of the upper walls and the number of the arc-shaped walls are respectively at least four, and the side ends of the lower walls are connected or fixed with the side ends of the other lower walls. The upper ends of the lower walls are connected or fixed with the lower ends of the upper walls, the side ends of the upper walls are connected or fixed with the side ends of the arc-shaped walls, the arc-shaped walls and the upper walls are arranged at intervals to realize fillet transition between the upper walls, and the arc-shaped walls are connected with the two lower walls through angle plates which are horizontally or obliquely arranged. Compared with a rectangular wind-shield wall, the wind pressure of the wind-shield wall can be reduced, the stress of the wind-shield wall is reduced under extreme conditions, compared with a right-angle structure, the arc-shaped wall saves more materials, the weight of the wind-shield wall is reduced, the cost of the wind-shield wall is reduced, actual use is not affected, the external airflow environment can be improved, and the heat exchange efficiency of the air cooler is improved. And the whole equipment is more energy-saving.

The application relates to an air cooler. The purpose is to provide an air cooler fan bridge with low wind resistance, adjustable inherent frequency and TLD damping function, which also has the characteristics of simple structure and convenient use. The technical scheme is an air cooler fan bridge with low wind resistance, adjustable inherent frequency and TLD damping function; characterized in that: the outer sides of the middle parts of the two main beams are guide surfaces which are inclined inward from top to bottom, and the two sides of the support beam are guide surfaces which are inclined to the vertical center line from top to bottom; so as to guide the airflow.

According to the curved-surface air guide barrier, the air guide blades are designed to be of a streamline structure, air is guided to the oblique lower portion of a bridge in the transverse direction through the air baffle, air is guided to the oblique upper portion of the bridge in the transverse direction through the curved plate, and through the design, air resistance can be effectively reduced, the resistance coefficient of the bridge is reduced, and transverse wind is prevented from directly acting on the surface of the bridge; overlarge lateral pressure is caused to the bridge, the influence of wind load on the bridge is reduced, and the stability and the structural safety of the bridge are improved; the height ratio of the curved plate to the wind shield can effectively balance the function of the wind guide blade, the wind guide effect can be maximized, wind pressure can be reduced, and it can be guaranteed that the wind guide blade has enough structural strength; by means of the curvature radius of the curved plate, the stability and uniformity of air flow guiding can be effectively guaranteed, the air flow direction can be rapidly changed, the flow guiding efficiency is improved, meanwhile, the structure cannot be too heavy, and unnecessary air resistance is reduced.

The utility model provides an elevator partition assembly, which belongs to the technical field of elevators and comprises an elevator shaft, a partition wall, a frame, a reinforcing block, a connecting frame, partition frames, a first partition piece, a second partition piece and a fixing piece. The partition frame can be embedded between the frame and the connecting frame, the partition plate and the fixing piece sequentially penetrate through the mounting groove of the frame and the connecting part of the partition frame to fix the partition frame to the frame, and through the structural arrangement, the partition frame can be rapidly assembled on the frame, and disassembly, assembly and replacement are convenient; the steel plates serving as partition materials have high strength and durability, the second partition pieces with the metal nets are installed at the upper ends and the lower ends of the first partition pieces, the good ventilation effect can be provided, and the wind pressure generated during elevator running can be reduced.

The energy-saving and noise-reducing solid waste pneumatic conveying device comprises a spiral conveyor (1) which conveys materials obliquely downwards, a three-way type transition connector (2) is connected to an outlet in the lower side of the spiral conveyor (1), the other two connectors of the transition connector (2) are horizontally arranged and connected with a conveying air pipe (5), and a feeding hopper (3) is arranged on the upper side of the upper end of the spiral conveyor (1). One side of the upper end of the feeding hopper (3) is provided with a belt elevator (4) for supplying materials to the feeding hopper (3), the spiral conveyer (1) comprises a self-sealing section located on the lower side and a spiral conveying section arranged on the upper side of the self-sealing section, and one end of the conveying air pipe (5) is provided with a centrifugal fan (8) for supplying air to the conveying air pipe (5). The device has the advantages of low energy consumption and low noise.

The wind-resistant high-stability photovoltaic power generation equipment comprises a left square box and a right square box, the outer surface of the left square box and the outer surface of the right square box are jointly and fixedly connected with a protective coaming, the inner bottom wall of the left square box is fixedly connected with a hydraulic cylinder through an L-shaped support, the inner wall of the left square box is fixedly connected with two T-shaped sliding rails, and the two T-shaped sliding rails are fixedly connected with the left square box and the right square box. The outer surfaces of the two T-shaped sliding rails are jointly connected with a sliding square plate in a sliding mode. According to the device, the photovoltaic power generation assembly can move downwards into the protective coaming, so that external wind power is blocked by using the protective coaming, the wind power is prevented from being directly blown to the photovoltaic power generation assembly, the situation that the photovoltaic power generation assembly is damaged due to the influence of strong wind is effectively avoided, and the stability of the photovoltaic power generation assembly during power generation operation is guaranteed; and through the arrangement of the wind guide plate and the flow guide port, the wind power can be guided, the wind pressure generated on the protective coaming is further reduced, and the wind resistance effect on the photovoltaic power generation assembly is effectively guaranteed.

The present invention belongs to the technical field of photovoltaic modules, and relates to a windproof suspension type photovoltaic assembly, including suspension cables, upper mounting sleeves, photovoltaic panels, connecting rods, lifting mechanisms and mounting mechanisms, both sides of the bottom of the photovoltaic panel are hingedly connected with upper mounting sleeves, the photovoltaic panel can be set on the suspension cables through the upper mounting sleeves, both sides of the two upper mounting sleeves are connected with connecting rods, the upper mounting sleeves are provided with lifting mechanisms and mounting mechanisms, the lifting mechanism includes a connecting frame, a driving motor and a screw rod, both upper mounting sleeves are connected with a connecting frame, the connecting frame is equipped with a driving motor, and the output shaft of the driving motor is connected with a screw rod. The photovoltaic panels in the present invention are all individually arranged, and each photovoltaic panel is independently arranged, and the wind receiving area is smaller than the interconnected structure. When the wind blows over the photovoltaic panel, the wind receiving area of ​​the photovoltaic panel is smaller, and the wind pressure generated is also less, thereby reducing the possibility of blowing off the photovoltaic panel.

The utility model discloses a dustproof and waterproof protective screen cover of an integrated video linkage information release screen, which relates to the technical field of information release screen protection and comprises the integrated video linkage information release screen, and a high-strength transparent film is arranged on the device so that pedestrians can conveniently observe information at the upper end of the integrated video linkage information release screen. Meanwhile, the high-strength transparent film can isolate the integrated video linkage information release screen from the outside, so that small-particle gravels carried in strong wind are prevented from being blown to the upper end of the integrated video linkage information release screen under the action of wind power; an adjusting motor is installed to be matched with a wind direction sensor, when the wind direction sensor detects that strong wind blows in the forward direction of the device, the adjusting motor can drive the integrated video linkage information issuing screen to rotate by a certain angle, the top of the integrated video linkage information issuing screen faces the wind direction, and the wind pressure borne by the integrated video linkage information issuing screen is reduced; and the integrated video linkage information release screen is prevented from shaking.