1018results about How to "Regulating pressure" patented technology

A method of treating glaucoma in an eye by managing fluid flow past an implanted shunt having an elastomeric plate and a non-valved elastomeric drainage tube. The plate is positioned over a sclera of the eye with an outflow end of the elastomeric drainage tube open to an outer face of the plate. An inflow end of the drainage tube tunnels through the sclera to the anterior chamber of the eye. The plate may have regions of greater propensity for cell adhesion alternating with regions of lesser cell adhesion. For example, regions of texturing around the plate or drainage tube may be provided to control the size of a bleb that forms over the implant. The effective surface area of the plate may be balanced against a number of fenestrations. The drainage tube has a reduced profile and may be shaped with a non-circular external cross-section to reduce its height. A scleral groove may be used to further reduce the height of the drainage tube on the sclera. A flow restrictor for the early post operative period will immediately lower the intraocular pressure (IOP) and simultanously prevent hypotony.

In certain embodiments, a vial adaptor comprises a housing member, a connector configured to couple the adaptor with a vial, and an extractor channel formed in the housing member. The extractor channel is configured to facilitate withdrawal of fluid from the vial when the adaptor is coupled to the vial. In some embodiments, an anti-reflux valve is positioned within the extractor channel. The anti-reflux valve can be configured to impede or obstruct fluid returning to a fluid source after withdrawal of the fluid from the fluid source.

Some embodiments provide a cooking apparatus having a dual wall structure, including inner and outer shells. The inner shell is disposed adjacent the outer shell and the edges of the shells are hermetically sealed to form a cavity between the shells. In some embodiments, the cooking apparatus has a low-pressure creating lid, including a disk with an aperture, a pressure release valve installed on the aperture, and a rim that surround the disk.

The invention discloses an electric rice cooker and an electric rice cooker cooking control method. The electric rice cooker comprises a cooker body, a cooker cover and a pressure regulating device arranged on the cooker cover. The cooking control method comprises following steps of receiving a cooking instruction, and obtaining the type of food to be cooked in dependence on the cooking instruction; obtaining a corresponding cooking control program in dependence on the type of food to be cooked, controlling the pressure regulating device in dependence on the obtained cooking control program in order to make the internal pressure of the cooker after the electric rice cooker enters a boiling phase satisfy the cooking pressure corresponding to the corresponding cooking control program. By means of the electric rice cooker cooking control method, the cooking pressure can be concretely adjusted in dependence on different types of rice, the demand of different types of rice on the cooking pressure can be satisfied, one electric rice cooker can cook various kinds of rice well, and taste, appearance and quality of various kinds of rice after being boiled are optimal.

A method for forming a semiconductor structure includes providing a substrate comprising a first device region, forming a metal-oxide-semiconductor (MOS) device in the first device region, forming a stressed layer over the MOS device, and performing a post-treatment to modulate a stress of the stressed layer. The post-treatment is selected from the group consisting essentially of ultra-violet (UV) curing, laser curing, e-Beam curing, and combinations thereof.

The invention discloses a fast tool servo device with adjustable rigidity. According to the device, a tool rest component is additionally arranged on an assembly of a frame, a flexible hinge, piezoelectric ceramic, a tool holder, a diamond cutting tool and the like, and comprises a spring bracket, a spring sleeve, a spring, a locking ring and the like; the spring bracket is arranged at the front end of the frame; the middle part of the spring bracket is provided with a threaded hole; the spring sleeve is matched with the threaded hole through external thread on the wall of the sleeve; the spring is arranged in the spring sleeve; one end of the spring is in contact with the bottom of an inner hole of the spring sleeve, and the other end of the spring is in contact with the flexible hinge on the frame; and pressure which is applied to the flexible hinge by the spring can be adjusted by turning the spring sleeve, so that the rigidity of the fast tool servo device is adjusted.

The invention provides a constant wind temperature control system for a hot blast stove, comprising the hot blast stove (2), a detection element, a regulating valve, a data acquisition unit (1) and a computer (26). The control method of the control system comprises the following processes: detection of fluid parameters and valve location signals, data acquisition, data transmission, data comparison and data correction and control adjustment, wherein the detection element and the regulating valve are arranged in a pipeline, and temperature measuring equipment is arranged on the surface of a stove body. Specific steps are as follows: dynamically calculating parameters such as the heat storage capacity of checker bricks, temperature-rise ratio, theoretical wind temperature and the like during the combustion process, and carrying out on-line adjustment of parameters such as combustion air and gas flow, preheating temperature and the like; controlling direction change of the hot blast stove by the highest setting temperature of the checker bricks, a stove top and fume; and during the air supply period, taking hot blast temperature control as a target to determine an air supply curve and air supply time. The method based on calculation of dynamic balance of on-line energy of the hot blast stove effectively controls the heat storage capacity of the checker bricks of the hot blast stove, adjusts air supply quantity and air supply time, and ensures stable output of wind temperature of the hot blast stove.

The invention discloses a comprehensive test platform for the dynamic performance of a hydraulic cylinder of an engineering machine. The comprehensive test platform for the dynamic performance of the hydraulic cylinder of the engineering machine comprises a test platform body, a hydraulic system and an electrical test control system. The hydraulic system comprises a drive system unit and a loading system unit. The drive system unit comprises a first hydraulic pump, a first filter and three liquid inlet valve banks. Oil outlets of the three liquid inlet valve banks are connected with an oil inlet of the tested hydraulic cylinder. The loading system unit supplies oil to a loading hydraulic cylinder. The electrical test control system controls all the valve banks of the hydraulic system according to feedback signals. According to the comprehensive test platform for the dynamic performance of the hydraulic cylinder of the engineering machine, a drive system, a loading system and a gas-liquid supercharging system which are independently arranged are used for meeting test and control needs under different loads and different working conditions; and the comprehensive test platform also utilizes the feedback signals to control the test process, when the oil pressure, the flow, the filter precision, the system temperature and other indexes are not at the normal level, the system gives out an alarm to remind people and stops, and therefore system operation reliability is guaranteed.

The invention relates to a technology of a novel structure of a semi-active damping-adjustable vibration absorber for suspension of automobiles, locomotives and rolling stocks. The vibration absorber comprises two end part connecting rings, a piston rod, a sealing and guiding device, a cylinder body, a vibration absorber cover in threaded connection with the cylinder body, a piston valve assembly and a bottom valve assembly, and also comprises a tensile unloading electromagnetic valve assembly embedded in the piston valve assembly and the piston rod, a compression unloading electromagnetic valve assembly embedded in the bottom of the bottom valve assembly, and an external high-pressure small oil chamber arranged in a lug boss and provided with a master control valve assembly and a safety valve assembly; and the tensile unloading electromagnetic valve assembly, the compression unloading electromagnetic valve assembly and the master control valve assembly are controlled by a controller. By the vibration absorber, the magnitude and the direction of a damping force can be controlled without the relative speed for auxiliary judgment, and both the unloading control related to movement and the control of the magnitude of the damping force are provided.

The invention relates to a cooling method used for directional solidification and a cooling device therefor. In the method, liquid metal is taken as cooling liquid, and a formwork is cooled by adopting the spray cooling method independently or adopting the spray cooling method and the immersion cooling method simultaneously. For the cooling device, a liquid metal spraying device is arranged under a direction solidification holding furnace, and the liquid metal is taken as the cooling liquid to cool the pull-down formwork by spraying independently or accompanying with the immersion. The invention has the advantages that the thermal radiation of a heating area and a cooling area for direction solidification can be insulated; and the cooling liquid is recycled, so as to cool the cooling liquid in cycling.

The invention relates to an electro-deionization method and device for concentrating and purifying heavy metal wastewater synchronously, belonging to a wastewater treatment technique, which adopts first-stage two-section or first-stage multi-section electro-deionization device, wherein the inner sides of the positive and negative poles are arranged with corresponding pole protection chambers, the desalting chamber is filled with large-hole strong-acid strong-base mixed bed resin with narrow particles distributed; cation exchange film is adopted as the direction-turning film, after direction-turning, two adjacent concentration chambers are arranged continuously, both are separated by cation exchange film, simultaneously after direction-turning, the first concentration chamber is filled with large-hole mixed bed resin with the volume of cathode resin more than 50 percent, the heavy metal wastewater to be treated enters the desalting chamber and the concentration chamber in two paths, the heavy metal ion and cathode in the desalted water flow are transferred into the concentration chamber so as to obtain the desalted water, the concentrated water flow is partially circulated or closely circulated so as to obtain the concentrated liquid of metal wastewater, thereby recycling valence metals and pure water resources synchronously and realizing zero emission and resource treatment of wastewater. Compared with the prior art, the wastewater treatment process has higher separation efficiency, more reliable operation, more convenient operation, continuous process operation and no secondary pollution.

The invention discloses an inflation/deflation valve assembly for a central tire inflation/deflation system of an automobile and relates to tire inflation/deflation technology of a vehicle. The inflation/deflation valve assembly comprises an inflation valve cover, a hexagon lobular socket head cap screw, a spring washer, an inflation/deflation valve body, a deflation solenoid valve cover, a hexagon socket tapered screw plug, a first steel ball, a gasket, a diaphragm, a first spring, an O-ring, a second steel ball, a curved single coil spring lock washer, a solenoid valve assembly, a dust-proof cushion, a second spring and a slotted screw plug. The inflation/deflation valve assembly has the advantages of big air passage size, high inflation/deflation speed, compact structure, small volume and convenient assembly, and is applicable to a driving state or a parking state of the vehicle, so that a driver can perform inflation, an deflation or pressure measurement on the tires of the vehicle through simple operation in a driving cab so as to regulate the pressure of the tire; and therefore, the capacity of the tires or the vehicle for passing complex road surfaces, such as desert, muddy road surfaces or snowy and icy road surfaces and the like is improved, and the maneuverability and the viability of the vehicle are improved.

The present invention relates to an ink supply system used for an ink-jet printer, and an ink pressure control method in the system. Aiming at an ink gun 1 possessing a nozzle 41 and a pressure chamber 48, the ink is supplied circularly from a sub can 3 via an ink circulation path 2, at the upstream side of the ink gun 1, a pressure sensor 21 is configured, and at the downstream side, a pressure sensor 22 is configured. The flow path resistance R1 between the pressure sensor 21 and the ink gun 1 and the flow path resistance R2 between the pressure sensor 22 and the ink gun 1 are set to be equal R1=R2. A controller 10 calculates the ink pressure at the nozzle 41 according to the detection values of the pressure sensors 21, 22, so that the pressure in the sub can 3 is controlled in a manner of enabling the pressure to be a specified value.

The invention discloses a variable-volume pressure fixing device and method for measuring the solubility of gas in liquid. The variable-volume pressure fixing device includes a gas sample bottle, a gas cavity, a balance cavity, a thermostatic bath with a magnetic stirrer, a pressure sensor, a thermometer, a gas chromatograph, a pressure reducing valve, a pressure control gas cylinder, a vacuum pump and a real-time data acquisition system. The gas cavity is used for controlling and calculating the sample quantity of gas in the balance cavity. The balance cavity is provided with a visual window and a movable piston, the liquid level can be observed, and the pressure inside the balance cavity can be regulated. The constant pressure in the balance cavity is kept by adjusting the movable piston through the pressure control gas cylinder.The method stabilizes the pressure in the balance cavity through the external large-volume gas cylinder, achieves measurement of the solubility of a pure gas substance and a mixture in liquid under constant pressure and can avoid solubility equilibrium offset caused by sampling.

The invention discloses a method for producing fuel oil from coal tar by hydrogenating and converting heavy aromatics to light ones. The method adopting the process of combining hydro-refining with hydro-refining/cracking comprises the following steps: mixing coal tar with hydrogen and entering a hydro-refining reaction area, separating the refined effluent by a separation system to obtain naphtha, diesel and heavy fraction, feeding the heavy fraction into a hydro-refining/cracking reaction area, and adding all of the effluent obtained in the hydro-refining/cracking reaction area to the separation system. The nitrogen content in the heavy fraction as feeding material for hydro-cracking can suppress the activity of the cracking catalyst, so that the heavy fraction is subjected to hydro-refining to reduce the nitrogen content before contacting with the hydro-cracking catalyst, thus fully exerting the activity of the cracking catalyst, facilitating the conversion of large molecules into light ones, improving yield of the light-weight fuel oil and prolonging the running cycle of the device.

The invention discloses a frequency conversion multi-connected type heat pump system and a control method of a bypass electronic expansion valve. The system comprises a gas-liquid separator, a compressor and the bypass electronic expansion valve; the inlet end of the gas-liquid separator is connected with a first port of a four-way reversing valve; and the suction end of the compressor is connected with the outlet end of the gas-liquid separator, and the exhaust end of the compressor is connected with a third port of the four-way reversing valve. One end of the bypass electronic expansion valve is connected with the exhaust end of the compressor, the other end of the bypass electronic expansion valve is connected with the inlet end of the gas-liquid separator, and the bypass electronic expansion valve is used for throttling refrigerants output by the compressor by adjusting the opening degree. The bypass electronic expansion valve is arranged between the gas-liquid separator and the compressor, and therefore when the system is started, the proper system pressure can be rapidly built, so that the system can work under the optimum pressure state; the surplus capacity of the system can be effectively unloaded, and it is ensured that the system can safely and stably operate; and on the basis that an existing refrigerant piping scheme of the system is not changed, real-time adjustment and control over the capacity unloading amount of the system can be achieved.

A solids supply systems having a solids deaeration zone and a solids pump zone, and to methods for supplying the solids e.g., pulverized dry coal, to an application, e.g., gasification process. The solids deaeration zone includes a roller system containing a plurality of porous roller assemblies, or a belt system containing a plurality of porous belt assemblies. The solids deaeration zone is operable to deaerate and convey the solids to the solids pump zone. In the solids deaeration zone, the solids become sufficiently compacted prior to and upon entry into the solids pump zone to be effectively conveyed through the solids pump zone.

The invention discloses an intelligent traffic control method. The method comprises the steps of receiving real-time road condition information of each direction of an intersection; conducting identification analysis on the real-time road condition information, and obtaining traffic flow data; adjusting the display time of each indicator light in a traffic signal light according to the traffic flow data, and obtaining a control signal of the traffic signal light after adjustment; sending the control signal to the traffic signal light. By means of the intelligent traffic control method, unnecessary traffic jams can be reduced. The invention further discloses an intelligent traffic control device and system which have the advantages above.