55results about How to "Improve leakage" patented technology

The invention discloses a regulating valve testing device and method, and relates to the technical field of regulating valves, and the regulating valve testing device comprises a steam generation mechanism; the air inlet end of the condensation pipe is used for being connected with an air outlet of the adjusting valve; the condensing mechanism is used for condensing steam in the condensing pipe; and the detection mechanism is used for measuring the amount of liquid water condensed in the condensation pipe. According to the technical scheme, steam is supplied into the steam transmission pipe through the steam generation mechanism, steam leaked out of the adjusting valve is condensed through the condensation mechanism, liquid water condensed out of the condensation pipe is detected through the detection mechanism, and the total leakage amount of the adjusting valve is obtained; therefore, the leakage rate of the regulating valve under the saturated steam is detected, and the problem that the leakage rate of the regulating valve when the saturated steam serves as a working medium is difficult to detect is solved on the whole.

The utility model relates to a waste heat boiler, and relates to the technical field of waste heat recovery, the waste heat boiler comprises a boiler barrel and a flue gas radiation box, the flue gas radiation box is provided with an inlet flue, an outlet flue and a membrane type water cooling wall, and the boiler barrel communicates with the membrane type water cooling wall through a downcomer and is used for providing water for the membrane type water cooling wall; the flue gas radiation box is communicated with the boiler barrel through an ascending pipe and is used for introducing a steam-water mixture generated by water heated by flue gas at high temperature in the membrane water cooling wall into the boiler barrel; a flue gas staying piece is further arranged in the flue gas radiation box and used for prolonging the staying time of flue gas in the flue gas radiation box so as to prolong the heat exchange time. Compared with the prior art, the waste heat boiler is better in sealing performance through the arrangement of the membrane type water cooling wall, the problem of high-temperature flue gas leakage can be solved, the manufacturing period can be shortened, and the boiler manufacturing cost can be reduced.

A microelectronic device (100) includes a GaN FET (102) on a substrate (104), such as silicon, and a buffer layer (106) of p-type GaN semiconductor material. The GaN FET (102) includes a gate electrode extension (146) including a p-type GaN semiconductor material (120) in electrical contact with a gate electrode p-type GaN stack (124). The gate electrode extension (146) including a p-type GaN semiconductor material (120) in electrical contact with the gate electrode p-type GaN stack (124) may improve characteristics of the GaN FET (102), such as off-state leakage, sub-threshold voltage, and post stress Vt shift.

The application relates to the technical field of unmanned vehicle hangars, in particular to a self-cleaning unmanned vehicle hangar, which comprises a hangar box body, an opening is formed at the upper end of the hangar box body, and a mounting cavity is formed at the inner side of the hangar box body; a mounting frame is arranged at the inner side of the mounting cavity, a lifting mechanism is fixedly arranged on the mounting frame, a sand blocking plate is fixedly connected to the lifting end of the lifting mechanism, the sand blocking plate is conical, a receiving platform is fixedly connected above the sand blocking plate, the receiving platform comprises a supporting frame and a supporting net plate, the supporting frame is rectangular, the supporting net plate is formed at the inner side of the supporting frame, and the supporting net plate supports unmanned vehicles; and a homing mechanism for moving the position of the unmanned vehicle is arranged on the supporting frame. Through the above technical scheme, the sand and dust on the receiving platform can be automatically cleaned, a large amount of sand and dust can be prevented from accumulating on the receiving platform, and the accuracy of the unmanned vehicle homing in the hangar can be ensured.

A slip ring seal arrangement comprises: a slip ring seal (2) having a rotating slip ring (3) and a stationary slip ring (4) which define a sealing gap (5) between sliding surfaces (3a), (4a) thereof; a retaining member (6), (7) arranged at a back side (3b), (4b) of one of the slip rings (3, 4), the retaining member (6), (7) having a base surface (60), (70) directed towards the back side (3b), (4b) of the slip ring (2), (4), the base surface (60), (70) comprising a rib (10) protruding in an axial direction of the slip ring seal and a first annular groove (8) and a second annular groove (9), wherein the first annular groove (8), the second annular groove (9) and the annular rib (10) are arranged concentrically with respect to one another, and the annular rib (10) protrudes beyond said base surface (60), (70) of the retaining member (6), (7) by a length s, where the annular rib (10) is in contact with the back side (3b), (4b) of the slip ring (3), (4) to provide support at the back side thereof, where the annular rib (10) is arranged between the first annular groove (8) and the second annular groove (9), and wherein the first annular groove (8) and the second annular groove (9) are arranged in close proximity to the annular rib.

The utility model discloses a semiconductor device. The semiconductor device includes: a substrate; the buffer layer is positioned on one side of the substrate; the channel layer is located on the side, away from the substrate, of the buffer layer; the composite barrier layer comprises a first barrier layer and a second barrier layer, the first barrier layer is located on the side, away from the buffer layer, of the channel layer, and the second barrier layer is located on the side, away from the channel layer, of the first barrier layer; the band gap of the second barrier layer is larger than that of the first barrier layer; the dielectric layer is located on the side, away from the channel layer, of the composite barrier layer; the grid is located on one side, away from the composite barrier layer, of the dielectric layer; the source electrode is located on the side, away from the channel layer, of the composite barrier layer; and the drain electrode is positioned on one side, far away from the channel layer, of the composite barrier layer. According to the technical scheme, the dynamic characteristics of the depletion type gallium nitride semiconductor device are improved.

A semiconductor device and a manufacturing method thereof, and an electronic device, the method comprising: providing a semiconductor substrate, a shallow trench isolation structure formed in the semiconductor substrate, and a first etch stop layer formed on the semiconductor substrate between adjacent shallow trench isolation structures; etching back the first etch stop layer to obtain a second etch stop layer, the width of the second etch stop layer being smaller than the width of the first etch stop layer; ion implanting the semiconductor substrate using the second etch stop layer as a mask to form a source-drain region in the semiconductor substrate; removing the second etch stop layer; forming a gate electrode layer on the semiconductor substrate; forming a sidewall structure on the sidewall of the gate electrode layer, the top of the sidewall structure being flush with the top of the gate electrode layer. The present invention uses an etch stop layer to define the source-drain ion implantation region, and does not need to etch the sidewall structure to form a slanted shoulder structure with a sharper top. The sidewall with uniform width can increase the effective distance between the gate and the contact hole, and improve the leakage problem.

The utility model discloses a chlorine liquefier tube head welding structure which comprises a tube plate and a plurality of heat exchange tubes, and the heat exchange tubes are arranged on the tube plate in a penetrating mode. The length of the part, extending out of the tube plate, of the tube head of the heat exchange tube is 0-1mm; the tube plate is provided with a groove used for being connected with a heat exchange tube, and the angle of the groove ranges from 45 degrees to 60 degrees. The heat exchange tube is in interference fit with the hole wall of the tube plate through expanded connection, and the groove is filled with a welding seam to fixedly connect the heat exchange tube with the tube plate. According to the chlorine liquefier pipe head welding structure, the welding quality of the chlorine liquefier pipe head can be improved, the connection reliability is enhanced, and leakage is effectively prevented.

This application discloses an electric rice cooker with a metal inner lid, including a pot body, an inner pot, and a lid. The lid includes a plastic lid assembly and a metal inner lid. The metal inner lid is mounted on the plastic lid assembly and has a sealing surface that mates with the inner pot. The metal inner lid directly covers the inner pot to form a cooking cavity. A cooling device is provided inside the plastic lid assembly. The plastic lid assembly has an air inlet on the side facing the external environment. The air inlet of the cooling device is connected to the air inlet. An air duct is provided in the lid, and the air duct has an air outlet located at the rear of the rice cooker in the front-to-back direction. The cooling device generates airflow that is guided through the air duct to cool the metal inner lid, causing condensation to form on the lower surface of the metal inner lid. At least part of the condensation flows into the sealing surface to form a water seal. This improves the steam leakage problem that may occur at this joint in existing rice cookers, reduces the impact of hot airflow on the user, and enhances the user experience.

The utility model discloses a titanium alloy pipe sealing detection equipment relates to industrial detection and quality control technical field, including bottom plate, moving assembly, sealed connection subassembly, nitrogen storage and delivery subassembly and detection component, the bottom plate upper end is equipped with moving assembly, nitrogen storage and delivery subassembly and detection component, moving assembly contains dovetail type sliding slot, two -way threaded rod no.

The utility model relates to the technical field of batteries, and discloses a liquid injection hole sealing element and a battery cell cover plate, the liquid injection hole sealing element comprises a sealing nail and a strengthening structure; the sealing nail is provided with a containing space, and the containing space extends in the axial direction of the sealing nail and penetrates through the first surface of the sealing nail. At least part of the reinforcing structure is arranged in the containing space, the reinforcing structure is connected with the sealing nail, and the hardness of the reinforcing structure is larger than that of the sealing nail. According to the liquid injection hole sealing element disclosed by the utility model, the two parts with different hardness are matched and connected, and injection molding parameters can be independently optimized according to the hardness requirements of each part, so that the injection molding difficulty of the tail part of the sealing nail is reduced, the manufacturing requirements of the liquid injection hole sealing element are reduced, the manufacturing difficulty is reduced, and the production efficiency is improved; and the hardness of the reinforcing structure is greater than that of the sealing nail, so that nail insertion of equipment is facilitated, and meanwhile, the risk of head-to-tail adhesion of adjacent liquid injection hole sealing elements in the transportation process is reduced.

The application discloses an engine fuel injection pump performance test platform and relates to the technical field of fuel injection pump performance test.The application comprises a test table, a test drive is installed on the test table, a mounting seat is installed on the upper surface of the test table, a fuel injection pump with a thermocouple is installed on the mounting seat, a test cover is slidably connected to the upper surface of the test table, electric heating radiators are linearly arranged on the inner wall of the test cover, an independent cold cavity is arranged on the outer side of the test cover, and the cold cavity can be connected with the test cover.Through the double-environment cavity formed by the test cover and the cold cavity, the inside of the test cover simulates a high-temperature environment, the cold cavity simulates high-speed cooling air flow, a heating surface simulates a hot radiation surface close to an engine cabin, and a windward surface simulates a wind surface of a fuel injection pump in the process of vehicle driving, so that the test result is closer to reality, and the extreme transient working condition of high-speed impact of a car into rain or alternating impact of high-temperature and low-temperature air can be accurately simulated.

The utility model relates to the technical field of vertical water pumps, in particular to an anti-oil-throwing oil tank sealing device of a vertical water pump, which comprises a motor, a connecting piece is fixedly mounted at the bottom of the motor, a shell is fixedly mounted at the bottom of the connecting piece, a rotating shaft is fixedly mounted at the driving end of the motor, and an oil tank is fixedly mounted at the top of the shell. According to the anti-oil-throwing oil tank sealing device of the vertical water pump, the motor, the shell, the connecting piece, the oil tank, the lower sealing cover, the upper sealing cover, the rotating shaft, the shaft sleeve, the rubber sealing ring, the annular embedded part, the sealing lip, the oil retainer, the oil collecting groove and the recycling hole are used in cooperation, and unrelated parts in the device are the same as those in the prior art or can be achieved through the prior art. The sealing device has excellent anti-leakage performance, the oil retainer and the oil collecting groove on the shaft sleeve can effectively block and collect thrown lubricating oil, the lubricating oil flows back to an oil tank through the recovery hole, and the oil throwing prevention effect is enhanced.

The utility model discloses a level shifter, a driving circuit and a display device, and the level shifter comprises an input circuit which controls one of a first output node and a second output node to be electrically connected to a first power supply voltage according to a first input signal and a second input signal which are inverted; an output circuit for controlling the voltage of another output node to be equal to the second power supply voltage according to the voltage of the output node electrically connected to the first power supply voltage; a boosting circuit for boosting a voltage of a boosting node corresponding to an output node electrically connected to the first power supply voltage to a second power supply voltage; the at least one inverter is used for inverting the voltage of the at least one output node so as to obtain an output voltage, and in the process that the boost circuit raises the corresponding pull-up node to a second power supply voltage, when the voltage of the corresponding pull-up node reaches a first voltage, the output voltage of the at least one output node is output. And the second pull-up unit pulls up the voltage of the node to a second power supply voltage so as to improve the electric leakage problem of the phase inverter.

According to the application of the urine TRPV5 as the biomarker in chronic kidney disease diagnosis and risk assessment, it is found for the first time that the TRPV5 and the detectable fragment thereof exist in the urine, the content of the TRPV5 and the detectable fragment thereof in the urine is in positive correlation with the chronic kidney disease CKD, the CKD can be diagnosed by detecting the content of the TRPV5 in the urine, and the application of the TRPV5 and the detectable fragment thereof in the diagnosis and risk assessment of the chronic kidney disease in the diagnosis and risk assessment of the chronic kidney disease is achieved. The invention also provides a specific in-vitro diagnosis method and a kit. According to the in-vitro diagnosis method, multiple defects of the existing CKD diagnosis technology are overcome, a brand-new diagnosis tool which is noninvasive, sensitive and specific and can be used for staging and prognosis evaluation is provided, and the in-vitro diagnosis method has remarkable scientific and technological advancement and wide clinical application prospects.

The drying device for corrugated paper processing comprises a bottom plate, the left side of the top of the bottom plate is fixedly connected with a feeding frame, and the right side of the feeding frame is fixedly connected with a drying box. The motor drives the worm to rotate, the worm drives the worm gear to rotate, the worm gear drives the rotating disc to rotate, the rotating disc drives the transmission pin to rotate with the center of the rotating disc as the axis, the transmission pin drives the moving frame to reciprocate left and right, and the moving frame drives the reciprocating plate, the vertical plate, the linkage plate and the air injection plate to reciprocate left and right. The airflow output by the horizontally-moving air spraying plate vertically falls, the vertically-falling airflow cannot easily flow to the feeding port and the discharging port, the advantage of efficient drying is achieved, in the using process of the air spraying assembly, the interior of the drying box is evenly dried in a horizontally-moving mode, the air spraying assembly vertically sprays air, and the airflow vertically flows; vertical airflow is difficult to directly penetrate through the feeding port and the discharging port of the drying box to leak, and the drying effect of the drying box is improved.

The present invention belongs to the technical field of batteries, and specifically relates to a lower plastic part for a power battery, a first plastic part (1) for spacing a battery cell (9) and a top cover sheet (8); and a second plastic part (2) connected to the first plastic part (1); wherein the lower plastic part has an installation state and a pre-installation state, wherein when in the installation state, the second plastic part (2) moves to a position in the same direction as the first plastic part (1). The present invention can simplify the assembly steps, help reduce manufacturing costs, reduce overall dimensional errors, and improve the overall assembly effect of the battery. In addition, the present invention also discloses a top cover assembly structure and a power battery.

The invention relates to the technical field of air storage air compressors, and discloses a high-stability air compressor for energy storage, which comprises a damping base and a damping assembly, a compressor is arranged on the inner wall of the damping base, and an air inlet pipe is fixedly mounted on the right side of the compressor; the damping assembly comprises a moving frame, an adjusting hole, a moving hole, an elastic telescopic rod, a limiting groove, an elastic telescopic plate, an elastic telescopic roller and a damping frame, the moving frame is fixedly installed at the bottom of the compressor, the adjusting hole is formed in the front side of the damping base, and the moving hole is formed in the front side of the moving frame. When the elastic telescopic plate is pressed to move downwards, the elastic telescopic plate is separated from the limiting groove and the limiting to the elastic telescopic rod is relieved, the triggering mode of pressing unlocking can prevent limiting failure caused by accidental touch in the daily operation process, and the design of automatic limiting after resetting can ensure that the elastic telescopic rod is stably locked; therefore, excessive vibration leakage caused by limiting falling during operation of the compressor is avoided.

The invention provides a gate drive circuit and a display device. The gate driving circuit comprises a first node control circuit, a first holding circuit, a first output circuit and a first node voltage stabilizing circuit. The first node control circuit is configured to control a voltage level of the first node. The first holding circuit is configured to hold a voltage level of the first node according to a voltage level of the second node. The first output circuit is configured to output a gate signal from a gate signal output terminal according to a voltage level of the first node. The first node voltage stabilizing circuit is configured to be turned on according to a touch signal of a first level in a touch period to control the voltage level of the second node, so that the first maintaining circuit is turned off, and the voltage level of the first node is stabilized. Thus, the first node voltage stabilizing circuit solves the problem that the first node leaks electricity through the first maintaining circuit in the touch control time period, stabilizes the voltage level of the first node in the touch control time period, and further solves the problem of abnormal display of the voltage level of the first node caused by electricity leakage.