64results about How to "Increase the exhaust area" patented technology

The invention provides a gas exhaust device for an aerostat. The gas exhaust device comprises a valve. The valve comprises a valve body and a valve cover, wherein the valve body is provided with a valve port, and the valve cover covers the valve port in an openable and closable mode. The valve body is fixed to a gas suction and exhaust port of a gas bag in the circumferential direction of the gas bag of the aerostat through a valve body installing mechanism, wherein the valve cover covers the valve port in the openable and closable mode through a control device with an opening and closing device. The opening and closing device comprises a drive mechanism and a valve cover reset mechanism, wherein the drive mechanism is connected with the valve cover and used for driving the valve cover to be vertically lifted at a preset height and driving the valve cover to tilt and be kept at a certain angle after the valve cover is vertically lifted at the preset height. The valve cover reset mechanism is connected with the valve cover and pushes the valve cover to reset to cover the valve port after the drive mechanism stops driving the valve cover. The valve cover can be vertically lifted and can tilt at the same time, the gas exhaust area is increased, collision between gas and the valve cover is reduced, and the gas exhaust speed is increased.

A turbine bucket is provided that can make centrifugal stress acting on a blade or dovetail not greater than a limit value of a material and that is provided with a shape of a blade root that can ensure a steam passage even if the blade is increased in length in order to increase an exhaust area.

The turbine bucket is for a steam turbine low-pressure final stage and has an exhaust area exceeding 9.6 m² (13.8 m²) in steam-turbine final-stage buckets for a rated speed 3600 rpm (3000 rpm) machine. The turbine bucket is made of martensite steel. A blade portion of the turbine bucket has a suction surface 7 and a pressure surface 8 which are each formed, at a turbine blade root, of three areas consisting of a steam inlet side area 12 with curvature, a steam outlet side area 13 with curvature and an approximately straightly formed area put between the two areas. An airfoil of the turbine bucket root is formed such that the relationship between a blade pitch t and a turbine-axial width BW of the blade portion is BW/t≧5.

The invention discloses a 1300mm moving blade of the final stage for a full-rotary-speed steam turbine, and relates to a moving blade of the final stage for a full-rotary-speed steam turbine, and the moving blade is used for solving the problems of less length, small steam exhaust discharge area, great energy source consumption of the moving blade of the final stage for the full-rotary-speed steam turbine, and incapability of reaching higher economy requirement. A shroud, a blade operation part and a blade root are subjected to die forging integrally from top to bottom; a boss tie piece is positioned at the middle part of the blade operation part, and is integrated with the blade operation part; a stelite alloy sheet is sticked to the steam inlet side at the upper part of the blade operation part; the height of the blade operation part is 1300mm, the axial width of the root part is 346.62mm, the diameter of the root part is 1850mm, the steam exhaust area of the blade operation part is 12.86m<2>, and the axial width of the blade root is 400mm. The moving blade of the final stage provided by the invention is used for the full-rotary-speed steam turbine with the power between 600MW and 1000MW.

The invention discloses a double-hole lithium ion cover plate and a rocking-chair type liquid injection device and method thereof, and belongs to the technical field of lithium ion battery process preparation. The double-hole lithium ion cover plate comprises a first liquid injection hole and a second liquid injection hole which are formed in the two ends of the cover plate respectively, wherein each liquid injection hole is located above an r angle of an A pole core and a B pole core of a lithium ion battery. The cover plate is also provided with welding sites used for being fixedly connectedwith positive and negative lugs. During liquid injection, the double-hole lithium ion cover plate is arranged above the lithium ion battery body and welded and fixed together, and liquid is injectedthrough the liquid injection cups at the left end and the right end, enters the battery in a vacuum state, and can be dispersed in multiple directions and quickly infiltrated after entering a batterycell. The liquid injection time of a single battery is short, and the quick liquid injection requirement is met; and during formation and capacity grading, the internal produced gas can be divided anddischarged through the double liquid injection holes, so that the exhaust area is increased, the bulging of the battery is reduced, and the abnormal phenomenon of liquid overflow is eliminated.

The invention relates to an automobile air window which comprises a top cover (4), a main frame part (9), an accessory frame (3), an air guide ring (8), a ventilator (12), an inner cover (1) and a decorative shield (2), wherein a push-pull device (13) and an opening device (11) are respectively fixed at the front end and the rear end of the top cover (4); the ventilator (12) is fixed in the middleof the air guide ring (8); the accessory frame (3), the inner cover (1) and the decorative shield (2) are arranged at an inner ring of the top cover (4); rain shields (5) are fixed at both sides of the top cover (4); the main frame part (9) is arranged between the accessory frame (3) and the rain shields (5); one end of the air guide ring (8) is connected with the inner cover (1), the other end is connected with the rain shields (5), and the air guide ring (8) is fixed in the middle of the top cover (4) by the inner cover (1) to form a complete automobile air window. The structure has the functions of forced ventilation, natural ventilation and escaping and the characteristic of strong air exchange and seal.

The invention relates to a novel anti-overflow pot cover. The novel anti-overflow pot cover comprises a pot cover body, an exhaust hole, standby holes, seal caps, connection rods and hard foam sheets. The novel anti-overflow pot cover is characterized in that the round exhaust hole with the diameter being 1 cm is formed in the pot cover body, the standby holes with the diameters being 4 cm are formed in the two ends of the pot cover body, each standby hole is sealed through the corresponding seal cap, each seal cap is connected with the corresponding hard foam sheet through the corresponding connection rod, each hard foam sheet is a cylinder with the diameter being 8 cm and the height being 0.2 cm, and the had foam sheets have good buoyant force; steam in a pot is exhausted through the exhaust hole of the pot cover body when normal heating is conducted, soup in the pot firstly arrives at the positions of the hard foam sheets when being about to overflow, the soup and the hard foam sheets ascend together when the soup continues ascending, the hard foam sheets push the seal caps out of the standby holes through the connection rods, the standby holes are also used for exhausting the steam at the moment, and therefore the very good anti-overflow effect can be achieved. The novel anti-overflow pot cover is simple in structure and easy to manufacture.

The invention discloses a vacuum air-exhausting device of a pressure-casting mould. The vacuum air-exhausting device is characterized by comprising a fixed mould air-exhausting block, and a movable mould air-exhausting block which are oppositely arranged in a clung mode, wherein an air-exhausting cavity is arranged between the fixed mould air-exhausting block and the movable mould air-exhausting block; one end of the fixed mould air-exhausting block is equipped with a vacuum interface; one end of the movable mould air-exhausting block is provided with an air suction hole; the air suction hole,the air-exhausting cavity and the vacuum interface are sequentially in communication to form an air-exhausting channel; the air-exhausting cavity extends in a wavy mode from the air suction hole to the vacuum interface; and a gap between the upper wall of the air-exhausting cavity and the lower wall of the air-exhausting cavity is gradually reduced in an extending direction. The vacuum air-exhausting device has the beneficial effects of being good in air-exhausting effect, not liable to have air hole blockage, easy to dismount and clear, great in air-exhausting area, and high in vacuum-pumping efficiency.

The invention relates to a the field of industrial steam turbine blades, and particularly discloses a large-load last stage blade which has a steam exhaust area of 5.0 m<2>, is large in steam exhaust area and high in aerodynamic efficiency and can meet the operating requirements of large-load variable working conditions. A lashing strip, a blade working part and a blade root of the blade are forged into a whole from top to bottom, wherein a boss lacing wire is arranged in the position, 0.550 mm relative to a blade height from bottom to top, of the blade working part and integrated with the blade working part; a molded line of the blade working part adopts a variable cross-section twisted blade, the height of the working part is 661.92 mm, the axial width of the root of the working part is 231.11 mm, the diameter of the root is 728 mm, and the steam exhaust area of the blade working part is 5.0 m<2>; and the blade root adopts a fir-shaped oblique blade root, and the axial width is 272 mm. The large-load last stage blade with the steam exhaust area of 5.0 m<2> has the advantages of high aerodynamic efficiency, good strength performance, large steam exhaust area and the like, has the characteristics of convenience in assembly and stable structure, and can be widely applied to a large-load industrial steam turbine with a variable working condition.

The invention discloses a co-rotating differential multi-screw extruding machine with the gradually changing type thread number and a machining method thereof. A first threaded rod in the extruding machine comprises two single-start thread elements, three single-start-gradually-changed-to-double-start transition thread elements, a double-start thread element and three double-start-gradually-changed-to-single-start transition thread elements; and a second threaded rod comprises two double-start thread elements, three double-start-gradually-changed-to-four-start transition thread elements, a four-start thread element and three four-start-gradually-changed-to-double-start transition thread elements. According to the machining method, a threaded rod mechanism achieves five enhancement mixing mechanisms by adopting the structure of the threaded rod mechanism, and conducts all-sided enhancement mixing on materials.

The invention provides a single-roller opener for regenerated fibers of waste textiles. The single-roller opener comprises a cotton inlet, a multifunctional impurity removing box, a cotton inlet fan, a double-circle dust cage filter drum, a dust flock cavity, a cotton storage box, a star-like roller, front and back steel rollers, an adjustable dust grid, an opening roller, a cotton return pipe, a cotton outlet, a heavy impurity removing grid bar, a magnet, a heavy impurity box, a cotton return hopper and a dust filter port, wherein raw materials directly enter the multifunctional impurity removing box from the cotton inlet under an effect of the cotton inlet fan; first, the raw materials are collided with the heavy impurity removing grid bar, so as to remove heavy impurities, and metals and then enter the double-circle dust cage filter drum; dust and flocks are sucked by a dust filter of the system; after the pressure of the raw materials is released, the raw materials fall into the cotton storage box, are opened by the star-like roller, the front and back steel rollers as well as the opening roller, and are gradually torn and opened into fiber-shaped substances; average lengths of the opened fibers can reach more than 14 mm; the yield is 400-500 kg/h; and the installed power of the whole machine is only 16.5 kw; and the single-roller opener for the regenerated fibers of the waste textiles, provided by the invention, has the advantages of small volume, small power consumption, high yield, no dust and flock leakage as well as low noise.

The invention discloses a display device and a cover plate thereof, wherein the cover plate of the display device comprises a transparent base plate, a first ink layer and a second ink layer; the transparent base plate comprises a display region positioned in the center and a non-display region surrounding the periphery of the display region; the first ink layer is arranged at the inner side surface of the non-display region of the transparent base plate; the second ink layer is arranged on one side, far away from the transparent base plate, of the first ink layer; the area of the second ink layer is smaller than the area of the first ink layer; a step part is formed between the second ink layer and the first ink layer; a hollow part is arranged at one side edge, near the display region, of the second ink layer; the hollow part communicates with the step part; and the hollow part is used for exhausting. The display device and the cover plate of the display device have the advantages that through the arrangement of the hollow part at one side, near the display region, of the second ink layer, the exhaust area can be increased; and the problem of display region attaching bubbles caused by ink misplacing can be solved.

The invention relates to the field of fire extinguishers and discloses a passive trigger gas fire-extinguishing device for an electric power machine room. The passive trigger gas fire-extinguishing device for the electric power machine room comprises a high-pressure gas tank, an intake valve and an exhaust port. The left side of the top of the high-pressure gas tank is provided with the exhaust port, and a rotating sprayer is arranged at the exhaust port. The rotating sprayer is in an elbow shape. One end of the rotating sprayer is concentrically and rotationally connected with the exhaust port of the high-pressure gas tank, and a seal ring is arranged between the rotating sprayer and the exhaust port of the high-pressure gas tank. A metal plug is plugged into the other end of the rotary sprayer, a gap exists between the first end of the metal plug and an opening of the elbow of the rotary sprayer, and the gap is filled with a fusible material. The metal plug is connected with a connecting line. The bottom of the high-pressure gas tank is provided with the intake valve. One end of the intake valve is connected with a high-pressure flame retardant gas bin through a gas guide pipe, and the other end of the intake valve communicates with the high-pressure gas tank. The high-pressure gas tank is filled with high-pressure flame retardant gas. A pressure difference control valve capable of detecting the pressure difference between the inside and the outside of the high-pressure gas tank is arranged on the right side of the top of the high-pressure gas tank. The passive trigger gas fire-extinguishing device for the electric power machine room can rapidly and effectively conduct spontaneous fire extinguishing.

The invention relates to a device for purifying pollutants in an operating area. The device for purifying the pollutants in the operating area is characterized in that the device comprises a body, andthe body is provided with a ventilating port; the body is internally provided with a ventilating cavity, and the ventilating cavity comprises a top ventilating cavity body and a vertical face ventilating cavity body; the top ventilating cavity body is composed of a top solid wall plate and a top plate; a gap-variable air door is arranged on the top plate; and the vertical face ventilating cavitybody is composed of a vertical face solid wall plate and a vertical plate, and the vertical plate is provided with a ventilating hole. The device for purifying the pollutants in the operating area provides a new air exhaust mode and an air volume adjusting mode for a fume cupboard, and under the condition that air disturbance in the cupboard is controlled, the granular dust pollutants produced inan experiment are effectively removed.

The invention provides a linear equidirectional parallel three-screw extruder which comprises a rack, a motor, a gear box and a screw sleeve arranged on the rack, wherein a screw assembly is arrangedin the screw sleeve and comprises three linear parallel screws, the adjacent screws are meshed with one another, the motor drives the three screws to rotate in the same direction through the gear box,each screw comprises a mandrel, a threaded conveying element and a threaded mixing element are arranged on each mandrel, the threaded conveying elements are arranged in a partitioned mode through thethreaded mixing elements. a cutting device is connected to the output ends of the screws, the thread sleeve is further in communication with a vacuumizing device and a conditioner, the conditioner isconnected with a feeder, and the feeder feeds materials into the thread sleeve through the conditioner. According to the three-screw extruder, the mixing performance and productivity of the existingextruder are improved, and the overall energy consumption is reduced.