49results about How to "Flow does not affect" patented technology

The invention relates to low-warpage reinforced polycarbonate alloy and a preparation method thereof. The low-warpage reinforced polycarbonate alloy is prepared from the following raw materials in parts by weight: 55-85 parts of matrix resin, 10-40 parts of ground glass and 0.1-5 parts of other components. The preparation method comprises the following steps: preparing the raw materials according to a formula, mixing the matrix resin with the other components in a medium-speed mixer for 20 minutes, adding a mixture into a double-screw extruder from a main feeding hole, individually adding the ground glass into the double-screw extruder from a side feeding hole according to the formula proportion, melting and extruding the raw materials in the double-screw extruder, and granulating to prepare the low-warpage reinforced polycarbonate alloy. Compared with the prior art, the preparation method has the advantages that high warpage of reinforced polycarbonate is improved on the premise of reducing the material cost, and low-warpage reinforced resin is obtained by the characteristic that horizontal and longitudinal shrinkage ratios are different as the ground glass cannot be oriented in the flowing direction during formation.

The invention discloses a leak-proof multiple-seal viscous damper which comprises a cylinder barrel. A piston rod is arranged in the cylinder barrel, the middle of the piston rod is in sleeved connection with a piston, the positions, close to two ends, of the piston rod are respectively in sleeved connection with guide sleeves, the right side guide sleeve is located at the right end of the cylinder barrel, the outer side of the right side guide sleeve is connected with a corrugated pipe, the corrugated pipe is connected with a right lug, an end cap seal is arranged at the left end of the cylinder barrel, the outer side of an end cap is connected with a left lug, a long through hole is formed in the piston rod, and a concentric damping hole is formed in the inner side of the piston. In the complete-set sealing mode, the possibility of damper leakage is greatly reduced, the durability of the damper is greatly prolonged, and the requirement for longer service life of the matched damper of a building can be met. Viscous liquid flows through the damping hole to produce a larger viscous damping force, the damping force can greatly consume input energy, and the safety of a main body structure can be improved.

The invention discloses a chiller heat exchanging amount control system. A first electromagnetic valve is arranged between a circulating fluid inlet and a first inlet end of a heat exchanger. A second electromagnetic valve is arranged between the circulating fluid inlet and a circulating fluid outlet. The chiller heat exchanging amount control system further comprises a temperature sensor arranged on a circulating fluid channel and used for detecting the temperature of circulating fluid. Based on the circulating fluid temperature detected by the temperature sensor, an opening and closing ratio of each electromagnetic valve is controlled. Part of exchanging heat passing through distributed circulating fluid or gas and cooling water is adjusted, the purpose of wide temperature range control is achieved through ratio adjustment of one or more than two electromagnetic valves, and therefore accurate temperature control in a wide temperature range of the circulating fluid is effectively achieved.

A rotary aircraft based on a new type of flap rudder is based on a sphere-conical configuration of a rotary aircraft. This aircraft has a new type of flap control rudder surface. By designing four x-shaped distributed flaps on the tail of the body of rotary aircraft, and using the flaps as the full-motion rudder surface of the aircraft, the maneuverability of the aircraft at hypersonic speed can be obtained by flap deflection. The new type of flap rudder surface, replacing a common tail layout scheme, is helpful to reduce or eliminate the aerodynamic interference and heating problems in the conventional tail-fin configuration scheme, and effectively increase the loading space inside the aircraft instead of conventional tail-fin configuration scheme. The novel flap type control rudder is arranged at the bottom of the body of revolution fuselage, the flow of the flap rudder surface under the hypersonic environment will not affect the flow of the upstream body of revolution fuselage, theaerodynamic interference between the flap rudder and the body of the aircraft fuselage is small, and the problem of mutual interference between the tail fins of the conventional body of revolution fuselage is effectively avoided.

The invention relates to a double-plug series connection application method of a reciprocating pump, and a high-efficiency liquid pump applying the method, and solves the problems that a conventional reciprocating pump influences the continuity of a liquid flow, and is complex in structure, high in manufacturing cost, a, and heavy. According to the double-plug series connection application method, two sets of hollow plungers or pistons, each of which is provided with a one-way valve, are assembled in a pump cylinder in a series connection manner, and are respectively in reciprocating movement in opposite directions to perform one-way pushing on the liquid flow in turns; and the liquid flow adopts a smooth, continuous and even flowing manner in a pump body. The high-efficiency liquid pump disclosed by the invention is simple in structure and high in efficiency; and a plurality of pumps are in composite application: a liquid inlet of the last pump body is integrally connected with a liquid outlet of the next pump body, the pumps are in series connection for application, and any sets in the pumps can be opened and closed according to the pressure requirement, so that the high-efficiency liquid pump is suitable for a deep oil well pump, a high-lift high-pressure pump and the like.

The invention discloses a low-temperature and low-pressure steam production device in a power station boiler and a process method. The low-temperature and low-pressure steam production device comprises a wall type steam generator, a steam header and an external supply steam mixing station; the wall type steam generator is arranged between SOFA air of a low NO<x> burner and a platen superheater ina boiler furnace; the wall type steam generator is provided with an introduction pipe which is used for introducing make-up water; the wall type steam generator communicates with the steam header through a lead-out pipe; and the steam header communicates with the external supply steam mixing station through a superheated steam pipeline, and the external supply steam mixing station is used for achieving external supply of steam. According to the the process method and the low-temperature and low-pressure steam production device in the power station boiler, the required low-temperature and low-pressure steam can be produced under the condition that the main steam quantity and the steam-water circulation system of a unit are not influenced.

The invention discloses a gas sealing device and method of glass base annealing furnace in the LED and organic luminous display, which comprises the following parts: gas source to generate gas lock air, aerator under the annealing furnace corresponding to glass base in connection with gas source, grid plate with angle adjustable in the outlet of aerator, drawing fan on the lower end of aerator and grid plate with angle adjustable in the inlet of drawing fan.

The invention relates to a blade boundary layer suction jet device. The blade boundary layer suction jet device comprises a blade body, a rotor rotationally arranged on the airflow inlet and outlet end of the blade body and an arc-shaped blade leading edge covering the rotor and fixedly connected to the blade body. A plurality of stationary blade flow passages are arranged on the surface of the airflow inlet and outlet end of the blade body side by side. A plurality of spiral moving blade runners with the axis of the rotor as the center are arranged on the surface of the rotor. The stationaryblade runners are in one-to-one correspondence with the moving blade runners, the blade leading edge is fixed to the blade body, then a first gap for airflow inlet/outlet is formed between the blade leading edge and one surface of the blade body, a second gap for airflow inlet/outlet is formed between the blade leading edge and the other opposite surface of the blade body, and the first gap and the second gap both are communicated with the stationary blade runners. According to the blade boundary layer suction jet device, the stable and continuous jet can be obtained by driving the rotor to rotate through one driving source, the size and the direction of the jet are changed by controlling the rotating speed and direction of the rotor, and the control method is simple,

The invention discloses a heat storage type waste heat recovery device, relates to the technical field of waste heat recovery, and aims at solving the problem that an existing waste heat recovery device is low in heat recovery efficiency. Flue connecting pipes are integrally arranged on the two sides of a waste heat recovery pipe, a flue gas inlet is formed in one end of the flue connecting pipe on one side, a flue gas outlet is formed in one end of the flue connecting pipe on the other side, and flue gas discharge pipes are installed on the two sides of the flue connecting pipes; a heat exchange spiral pipe is installed in the flue connecting pipe located at the end where the flue gas inlet is located, the flue gas discharge pipes and the flue connecting pipes are sealed and fixed through connecting flanges, a steam pocket is welded and fixed to the upper portion of the waste heat recovery pipe, and a flue gas heat exchange cavity is formed in the waste heat recovery pipe; and the two sides of the interior of the flue gas heat exchange cavity are each provided with a heat exchange plate assembly, a steam auxiliary heating device is arranged in the middle of the interior of the flue gas heat exchange cavity, and the upper end of the steam auxiliary heating device extends into the steam pocket.

The invention provides a longitudinal baffle plate type heat exchanger. The longitudinal baffle plate type heat exchanger comprises a shell, a tube plate and a tube bundle; the tube bundle is arrangedin the shell through the tube plate, the longitudinal baffle plate type heat exchanger further comprises a mesh type supporting plate, the mesh type supporting plate is arranged in the shell, multiple limiting holes for inserting of the tube bundle and multiple circulation holes communicating with the two sides of the mesh type supporting plate are formed in the mesh type supporting plate, and the tube bundle is inserted on the limiting holes. Through the technical scheme, through the mesh type supporting plate, the tube bundle is fixed, the whole fixing effectiveness is good, vibration and deforming of the tube bundle in the use process can be avoided, in addition, the circulation holes are formed in the mesh type supporting plate and can communicate with the two sides of the mesh type supporting plate, the normal running of shell side media within the tube length range of the tune bundle can be facilitated, therefore, the mesh type supporting plate can transversely support the tubebundle, flowing of the shell side media is not affected, and the use effect is good.

The invention relates to a liquid level control system and liquid level measuring method based on oblique photography, wherein the liquid level control system comprises a nozzle bag; a nozzle bag cover is set on an upper portion of the nozzle bag; the nozzle bag cover is provided with a glass observation window; the glass observation window is provided with a scale; the liquid level height inside the nozzle bag and the inner wall of the nozzle bag are formed a liquid lever cross line; the scale is parallel to the liquid level cross line; a CCD camera is set above the nozzle bag in an inclined way; the liquid level cross line inside the nozzle bag is captured through an optical shaft of the CCD camera by penetrating through the glass observation window; the liquid level cross line, the scale and the lens focus of the CCD camera are in the same surface; a data transmission line is connected between the CCD camera and a PC machine; and the glass observation window is an oval shape. According to the invention, the liquid level control system and liquid level measuring method provided herein has the advantages of high measuring accuracy, rapid measuring speed, simple structure, easy removal and installation and low cost; the surface of an amorphous thin belt is bright; the figure of the fish scale is not obvious; and the quality of the amorphous thin belt is improved.

The invention discloses a reciprocating stirring type SCR reactor flue gas flow equalizing device and a working method thereof. The reciprocating stirring type SCR reactor flue gas flow equalizing device structurally comprises a spoiler, a reciprocating motion mechanism, a motor, a guide groove, a rectifier and the like. Rotation of the motor is converted into linear reciprocating motion through the reciprocating motion mechanism to drive the spoiler to reciprocate along the left-right direction of the flue; a disturbance perpendicular to the flowing direction of flue gas is applied to the flue gas in the flue through the spoiler, stirring and mixing of the flue gas are achieved, a temperature field, a flow field and components are enabled to be more uniform, the flow field is reintegratedthrough the rectifier arranged on the downstream, and it is guaranteed that the flow field of the flue gas entering the SCR reactor is uniform and stable.

The invention relates to a heavy truck, an engine and a fan guard. The fan guard is provided with a fan guard ring used for containing a fan, and a fixing hole is formed in the fan guard ring; the fan guard further comprises an annular brush, the annular brush comprises a base body and a plurality of flexible bristles fixed to the base body, and the base body can be fixed to the fixing hole through a fastener, so that the outer periphery of the base body is attached to the inner periphery of the fan guard ring, and the fixing hole is sealed; and each bristle extends in the radial direction of the air guard ring. Due to the arrangement of the annular brush, a gap which is small enough is formed between the fan guard and the blade tips of a fan, and therefore the heat dissipation efficiency of a heat dissipation device is improved. When the fan runs, the blade tips of the fan are prevented from being in contact with the fan guard ring, and mutual interference between the fan guard ring and fan blades is avoided. The gaps between the tail ends of the bristles and the tips of the fan blades of the fan are 3-8 mm, and the performance of the fan can be improved by about 8%.

A throw-in type liquid level transmitter disclosed by the present invention comprises a detection assembly, a display and a waterproof cable used for connecting the detection assembly and the display, a cable core penetrates through the interior of the waterproof cable, the detection assembly comprises an amplification circuit, a circuit compensation plate and a pressure sensor, the cable core is electrically connected with the amplification circuit, and the circuit compensation plate is electrically connected with the pressure sensor. The amplifying circuit is electrically connected with the circuit compensation plate, the circuit compensation plate is electrically connected with the pressure sensor, and a lower sealing sleeve and an upper sealing sleeve which are used for protecting the detection assembly are arranged on the outer side of the detection assembly. The device can be protected through the cable protection cover, the sealing rubber block and the first sealing ring, the water inlet through hole of the device can be cleaned through the anti-blocking assembly, blocking is prevented, a power source does not need to be added, the anti-blocking assembly can be driven to move under the action of water flow, use is convenient, and the manufacturing cost is greatly saved.

The invention discloses an integrated waste gas bypass turbo machine with an airflow management device at the turbine end. The integrated waste gas bypass turbo machine comprises a turbine shell, a bypass waste gas channel and a turbine waste gas channel, as well as an integrated turbine shell cover plate which is arranged at the air outlet end of the turbine shell; both the bypass waste gas channel and the turbine waste gas channel extend from the turbine shell to the integrated turbine shell cover plate; and flow guide grooves are formed in the integrated turbine shell cover plate, the bypass waste gas channel and the turbine waste gas channel communicate with each other through the flow guide grooves, and the flow guide grooves are formed in the position, away from a turbine, of the integrated turbine shell cover plate. According to the integrated waste gas bypass turbo machine with the airflow management device at the turbine end, the bypass waste gas and the waste gas entering theturbine are naturally mixed in an exhaust passage which is far away from the turbine, and the impact is relatively small when the two strands of airflow are converged; and the advantages of being small in airflow loss, low in noise, high in turbo machine efficiency and the like are achieved.

The present invention relates to a blanking tube induced air damping device comprising a rotating structure, an outer casing disposed at a periphery of the rotating structure, and two bearing seats disposed on the outer casing. The rotating structure comprises a rotating shaft and a choke plate, two ends of the rotating shaft are detachable, flow of material in a blanking tube cannot be hindered via the device, and only induced air is blocked via the device. A gap positioned at the middle of the choke plate is used for enabling the material in the blanking tube to pass through in an unobstructed manner, the choke plate cannot be impacted via the material, the flow of the material cannot be affected via the device, and material blockage can be prevented. If a small amount of scattered material falls on the choke plate, the material rotates downward when weight of the material gathering for a long time breaks the balance; when the choke plate is small in friction coefficient and greaterthan 60 degrees in inclination angle, the small amount of scattered material slides down; under the tensile force of a tension spring, the choke plate returns to an initial position, and material blockage can be prevented even if the scattered material gathers. The choke plate is mainly used for blocking a flowing path of the induced air carried by the material falling down in the blanking tube, and therefore the quantity of the induced air in the blanking tube can be greatly reduced.

An anti-reflux device of a gastroscope is arranged on the front portion of a handle end of an endoscope tube and connected with a working channel of the endoscope tube, the anti-reflux device of the gastroscope is provided with an upper bidirectional channel and a lower bidirectional channel, reflux grooves which are arranged in a staggered mode are arranged between the upper bidirectional channel and the lower bidirectional channel, and the reflux grooves are of a U-shaped structure and are communicated with the upper channel and the lower channel. The opening direction of the backflow groove faces the lens direction of the gastroscope. By means of the two staggered backflow channels, no resistance is generated to flowing of forward liquid, flow dividing and backtracking effects can be continuously generated by impacting reverse flowing liquid, fluid in the upper channel and the lower channel is prevented from flowing under pressure, and the stable and reliable backflow prevention effect is achieved.

The invention relates to the technical field of air pollution prevention and control, in particular to desulfurization and dust removal equipment and flue gas treatment equipment. The desulfurization and dust removal equipment comprises a main body which is provided with a closed cavity; a liquid storage device which is arranged on the main body and is used for accommodating reaction liquid; a spraying device which is arranged on the main body, wherein the liquid storage device is communicated with the spraying device; and a flow guide assembly which is arranged in the closed cavity and divides the closed cavity into at least two communicated flow guide cavities, wherein the flow guide cavities are used for limiting the flowing direction of smoke entering the main body. According to the desulfurization and dust removal equipment provided by the invention, the closed cavity of the main body is defined into the plurality of flow guide cavities, the plurality of flow guide cavities are sequentially communicated, and each flow guide cavity independently limits the flowing direction of the flue gas, so that the flue gas can be sprayed and purified and can be washed by reaction liquid, and the desulfurization and dust removal effects on the flue gas are remarkably improved; and the final product is safe and does not cause pollution.