129 results about "Drain efficiency" patented technology

Gallium nitride material transistors and methods associated with the same are provided. The transistors may be used in power applications by amplifying an input signal to produce an output signal having increased power. The transistors may be designed to transmit the majority of the output signal within a specific transmission channel (defined in terms of frequency), while minimizing transmission in adjacent channels. This ability gives the transistors excellent linearity which results in high signal quality and limits errors in transmitted data. The transistors may be designed to achieve low ACPR values (a measure of excellent linearity), while still operating at high drain efficiencies and/or high output powers. Such properties enable the transistors to be used in RF power applications including third generation (3G) power applications based on W-CDMA modulation.

Gallium nitride material devices and methods associated with the same. In some embodiments, the devices may be transistors which include a conductive structure connected to a source electrode. The conductive structure may form a source field plate which can be formed over a dielectric material and can extend in the direction of the gate electrode of the transistor. The source field plate may reduce the electrical field (e.g., peak electrical field and/or integrated electrical field) in the region of the device between the gate electrode and the drain electrode which can lead to a number of advantages including reduced gate-drain feedback capacitance, reduced surface electron concentration, increased breakdown voltage, and improved device reliability. These advantages enable the gallium nitride material transistors to operate at high drain efficiencies and/or high output powers. The devices can be used in RF power applications, amongst others.

The invention discloses a disposal method of Barrier Lake for artificially regulating and controlling the drain flow and an application thereof. The method comprises the following steps of: digging a draining guide slot at the part of a relatively low-lying groove on a dam body of a barrier lake; in the draining intermediate stage of a Barrier Lake reservoir, carrying out artificial explosions or mechanical clearing on huge stones influencing downward erosion development in the draining guide slot so as to guarantee the stable growth of the down cutting flow; and in the draining later stage of the Barrier Lake reservoir, when the reservoir water drain flow in the draining guide slot reaches a set threshold value, putting an artificial structural body into the draining guide slot to stabilize a slot bed so as to control the quick down cutting of the slot bed and play a role of flow control. Compared with the prior art, the invention can avoid the phenomena that the draining efficiency in the initial stage is low, and the draining in the later stage is too quick and difficult to control, which are easy to appear when a conventional method is used for disposing the Barrier Lake, thus the invention greatly improves the emergency draining efficiency of the Barrier Lake and quickly reduces the risks of the Barrier Lake so as to greatly reduce the loss of an upstream flooding area and the risks of a downstream risk area.

A field-effect transistor (FET) in which a gate electrode is located between a source electrode formed on one side of the gate electrode and a drain electrode formed on the other side, a source ohmic contact is formed under the source electrode and a drain ohmic contact is formed under the drain electrode. In the FET, the rise in the channel temperature is suppressed, the parasitic capacitance with a substrate is decreased, and the temperature dependence of drain efficiency is reduced, so that highly efficient operation can be achieved at high temperatures. The drain electrode is divided into a plurality of drain sub-electrodes spaced from each other and an insulating region is formed between the drain ohmic contacts formed under the drain sub-electrodes.

In an air conditioning apparatus, an evaporator is disposed in an air-conditioning case to be inclined relative to a horizontal direction and to form a lower space below the evaporator. Air flows through the evaporator from a lower side toward an upper side thereof in the air-conditioning case. The lower space is partitioned by a partition member into an air-blown space and a drain space, and a drain guide member is disposed in the drain space to approximately contact a lower end portion of the inclined evaporator, where condensed water is gathered. Therefore, it can prevent air from hitting from below against the lower end portion of the evaporator. Consequently, the condensed water that has been gathered at the lower end portion of the inclined evaporator can be discharged rapidly along the drain guide member without being affected by the flow of air, and drips to a bottom surface of the air-conditioning case. Thus, draining-efficiency of condensed water generated on the evaporator can be improved effectively.

The invention relates to a construction method for a dust removing and water draining macroporous asphalt road surface containing a graded broken stone composite layer. The construction method is characterized in that the road surface structure is arranged to be sequentially provided with a lower layer, a middle layer, a waterproof and cracking-resistant layer, a dust removing composite layer and an upper layer from bottom to top. The construction method of the road surface comprises the steps that firstly, construction of a base layer is completed on a pad layer, and paving and compacting of the lower layer and the middle layer are performed; secondly, the waterproof and cracking-resistant layer is constructed on the surface of the middle layer, the graded broken stone fixing layer is paved on the surface of the waterproof and cracking-resistant layer through a rubber wheel paving machine, and a dust removing pipeline is fixed; finally, the upper layer of the macroporous asphalt road surface is paved. According to the macroporous asphalt road surface constructed through the method, the water draining, noise lowering and slip resisting capacities can be effectively recovered and kept, the service life is prolonged, the water draining efficiency and the accumulated snow melting efficiency are improved, the bulk temperature is lowered, traffic safety is guaranteed, and the traffic environment is optimized.

The invention provides a water drawing device and a water drawing method using the water drawing device. The water drawing device comprises a water delivery device, a water source tank and a water pump. The water delivery device comprises a water delivery pipe and a sealed water tank. When the water drawing device runs, multiple places can be irrigated at the same time or water can be drained through multiple pipes at the same time, time is saved, the irrigation efficiency and the water draining efficiency are improved, and then the losses caused when irrigation or water draining is not carried out in time are reduced; and energy consumption can tend to zero, unattended water drawing can be achieved, running can be safe, the related expense of pump station managing persons is greatly reduced, and unmanned management of pump stations is really achieved.

The invention discloses a water conservation gate. The water conservation gate comprises a horizontally-arranged base. Two sets of symmetrically-distributed fixing bases are welded to the two sides ofthe top of the base. The top of the base is provided with a connection plate which is in sliding connection with the two fixing bases. One side of the connection plate is fixedly provided with a first motor through a bolt. An output shaft of the first motor is connected with a screw which is in rotation connection with the connection plate. A box body is internally and fixedly provided with a third motor through a bolt. An outer ring of an output shaft of the third motor is fixedly sleeved with a gear. The top of the gear is provided with a movable plate which is in sliding connection with the box body. One side of a baffle is provided with a fixing plate. One side of the fixing plate is fixedly provided with a second motor through a bolt. An output shaft of the second motor is connectedwith a rotating shaft, and the rotating shaft and a brushing plate are located on the same side. Cleaning of a filter net is achieved, the cleaning face of the filter net is enlarged, the cleaning efficiency of the filter net is improved, the blocking of the filter net in the sluicing process is prevented, and the water draining efficiency is improved.

The invention discloses a sleeve-valve-pipe grouting and draining soil-nailing retaining device which is characterized by comprising a steel sleeve valve pipe, a grouting pipe, cement soil, coils and epoxy resin; one end of the steel sleeve valve pipe is opened, the other end of the steel sleeve valve pipe is closed, drain holes and grouting holes are distributed in the surface of the steel sleeve valve pipe on which the coils are wound, and the coils are connected with conducting lines and a high-frequency alternating-current power supply; each of the inner and outer sides of the steel sleeve valve pipe is coated with an epoxy resin protective layer by which the coils are covered; a slope surface is provided with a steel bar wire mesh, and cement slurry is sprayed on the slope surface, so that a cement soil surface layer is formed, and the cement soil covers the steel bar wire mesh; and the steel sleeve valve pipe is grouted at high pressure to form a grouting body. By using the steel sleeve valve pipe with the coils, an electromagnetic field and electromagnetic heating can act in a soil body around an anchor rod, so that the viscosity of water in the soil body is reduced and the draining efficiency is increased under the combined action of the electromagnetic field and a temperature field.

Methods and structures for improving the performance of integrated semiconductor transistors operating at high frequency and/or high power are described. Two capacitors may be connected to an input of a semiconductor transistor and tuned to suppress second-harmonic generation and to transform and match the input impedance of the device. A two-stage tuning procedure is described. The transistor may comprise gallium nitride and may be configured as a power transistor capable of handling up to 1000 W of power. A tuned transistor may operate at frequencies up to 6 GHz with a peak drain efficiency greater than 60%.

The invention discloses an electromagnetic field seepage combined anchor rod draining device and a construction method thereof. The electromagnetic field seepage combined anchor rod draining device is characterized by comprising a permeable steel pipe, permeable concrete, coils, epoxy resin, locating supports, an external anchor steel plate and an external anchor pier; drain holes are formed at intervals in the surface of the permeable steel pipe on which the coils are wound, and the coils are connected to a high-frequency alternating-current power supply through conducting lines; each of the inner and outer sides of the permeable steel pipe is coated by an epoxy resin protective layer, and the permeable concrete is poured at the inner and outer sides of the permeable steel pipe; and the external anchor steel plate and the locating supports are connected with the permeable steel pipe, and the permeable concrete is poured at the end parts of the external anchor steel pipe and the permeable steel pipe to form the external anchor pier. By using the permeable steel pipe with the coils, an electromagnetic field and electromagnetic heating can act in a soil body around an anchor rod, so that the viscosity of water in the soil body is reduced and the draining efficiency is increased under the combined action of the electromagnetic field and a temperature field.

The invention discloses a fuel cell bipolar plate with a bionic self-draining function and a self-draining method. Primary ridges are formed on a bipolar plate main body; micro flow fields are arranged among the various primary ridges; the micro flow fields comprise partially cone frustum-shaped bases; secondary ridges, third-level ridges and micro flow channels are arranged on the bases; the third-level ridges and the micro flow channels form bottom channels; the micro flow fields comprises self-draining mechanisms; when water produced by an electrochemical reaction gathers on the bottom channel of the micro flow channels, a liquid water film layer is formed on the bottom channel, and water produced by the reaction is discharged from the bottom channel; when more water gathers on the bottom channel, the water gathers on the liquid water film, solid-liquid contact is avoided, and the water is discharged out of the micro flow fields in a sliding manner; and due to the self-draining mechanisms, the retention phenomenon of liquid water among the flow channels is reduced, and the draining efficiency is improved, so that distribution of reactive gases among the various flow channels isuniform, the gas mass transfer efficiency is further improved, and the performance and stability of the fuel cell are improved.

The invention relates to an automatic high-efficiency water drainage and odor resistant floor drain, comprising a shell and an inner shell; the shell comprises a grate bar, an outline border, a bottom pedestal and a water outlet interface and the inner shell comprises an activity baffler, an O-ring seal, a strengthened magnet and a main body. When no current exists in the floor drain, the strengthened magnet inside the activity baffler in the inner shell upwhirls to block up the drain holes under the action of attractive force of the strengthened magnet inside the main body, thereby achieving the purposes of deodorization and defending back spilling water; when current exists in the floor drain, the activity baffler opens for drainage under action of gravity and impact force of the water. The floor drain has the advantages of thickness of only 35-50mm, high-efficiency draining, deodorizing, defending back spilling water, no ease in blocking, few assemble processes, simple installation, and the like and has wide prospects in the drain technology application of building decorations.

The invention discloses an anti-blocking municipal pipeline joint which comprises a base, a bracket and a pipe joint. Countersunk grooves are formed in four corners of the upper end of the base. Foundation bolts are arranged in the countersunk grooves. The bracket is arranged in the middle of the upper end of the base. A welding plate, pin holes and a hold-down groove are formed in the bracket. The pipe joint is arranged in the hold-down groove. Fixed plates are arranged on two sides of the lower end of the pipe joint. A water inlet pipe is arranged in the middle of one side wall of the pipe joint. A water outlet pipe is arranged at the position, which is far from the middle of the side wall of the water inlet pipe, of the pipe joint. A connecting pipeline is arranged in the middle in thepipe joint. An inner wall is arranged at the periphery of the connecting pipeline. An auxiliary pipeline is arranged at the position, which is far from the periphery of the inner wall, in the pipe joint. The anti-blocking municipal pipeline joint has the beneficial effects that the fixed connection function and the anti-blocking function are integrated, the operation is convenient, wastewater is drained in time through the auxiliary pipeline when the pipeline is blocked, damage of the pipeline due to blocking can be prevented, the draining efficiency is high, and the use is reliable.

The invention discloses an automobile accessory oil-immersion immersing and draining device comprising an immersing tank and a storing net frame. Two vertical spiral shafts are arranged inside the immersing tank, and sliding sleeves which are connected with the spiral shafts in a threaded-fit mode are arranged on the spiral shafts; a rotating sleeve which is rotatably connected with the outer sidewall of the storing net frame is arranged on the outer side wall of the storing net frame; the outer side wall of the rotating wall is connected with the outer side walls of the sliding sleeves to befixed; a top plate is arranged between the upper ends of the two spiral shafts; rotating shaft sleeves which are rotatably connected with the top ends of the spiral shafts are arranged at the top ends of the spiral shafts; a vertically downward rotating casing is arranged on the top plate, and the upper end of the rotating casing is connected with a rotating motor arranged on the top plate; a fixing connecting rod is arranged in the rotating casing; and the bottom end of the fixing connecting rod is connected with a fixed base arranged on the bottom wall of the storing net frame to be fixed.The automobile accessory oil-immersion immersing and draining device is simple in structure, automobile accessories are separated from and enter oil liquid conveniently, the draining efficiency is high, the structure is stable, operation is easy and convenient, and practicability is high.

The present invention discloses a drain structure, comprising a drain body containing a bottom wall. Two sides of the bottom wall are respectively connected with side walls. A housing space is formed by the two bottom walls. The drain body is provided with an opening which is located at one surface of the bottom wall, and the bottom wall is provided with a first surface and a second surface. The bottom wall is provided with a plurality of holes passing through the first surface and the second surface. Because the bottom wall provides a plurality of holes, the extra pipelines for remitting water in the space may be provided so as to improve the drain efficiency of the drain structure.

The invention discloses a non-clogging guillotine type cutting pump. The non-clogging guillotine type cutting pump comprises a pump body, a rotor, a stator and a pump shaft. A guillotine type cutting structure is arranged in the pump body, and the guillotine type cutting structure comprises a guillotine type impeller and a guillotine type water inlet body which is matched with the guillotine type impeller. The guillotine type impeller is connected with the pump shaft, the guillotine type water inlet body is arranged at a water inlet below the guillotine type impeller, the guillotine type impeller is provided with an impeller guillotine opening, and the guillotine type water inlet body is provided with a water inlet body guillotine opening. The impeller guillotine opening and the water inlet body guillotine opening form rotary cutting points which change in a rotating mode. According to the non-clogging guillotine type cutting pump, the points can form an arc for cutting when foreign matter is cut, the point of strength is small in the rotary cutting process, the power loss is greatly lowered, the cutting pump is simple in structure, the cutting effect is good, the draining efficiency is high, the cutting function is good, large floating objects can be cut continuously, the clogging phenomenon of the impeller is avoided, and the cost is low.

The invention relates to a novel draining and filtering device. The device comprises a cylindrical shell, the left upper part and right bottom of the cylindrical shell are respectively provided with a water inlet and a water outlet, a first separation plate and a second separation plate are respectively inserted into the cylindrical shell, the first separation plate and the second separation plate are connected through a connection rod, the first separation plate is provided with a pull rod, the top of the cylindrical shell is provided with a positioning plate, the positioning plate is provided with a positioning hole, the pull rod is provided with multiple pull rod holes from up to bottom, the second separation plate is uniformly provided with multiple water feeding holes, a first filter net is arranged below the second separation plate, the left side of the cylindrical shell located above and below the water inlet is respectively provided with a first cleaning hole and a second cleaning hole, the right side of the cylindrical shell is provided with a bar-shaped hole, a second filter net covers the bar-shaped hole and the bar-shaped hole is provided with a draining chamber communicated with the water outlet. The novel draining and filtering device can remove impurities in continuous draining and filtering processes so that draining efficiency is greatly improved.