76results about How to "Prevent pressure drop" patented technology

A beverage portioned package for preparing a beverage in an extraction device of which the package is held or clamped between a water supplying part and a receiver of the device. The package has a first surface for the water to be forced to flow there through under pressure when the package is held or clamped in the device; a second surface for the flow of beverage to be forced to flow there through so to be collected in the receiver, wherein the package contains a portion of water-soluble beverage material and a portion of a filler. The filler comprising water insoluble material adapted to maintain the extraction pressure above the pressure created by the sole resistance of the first and second surfaces when the package is emptied of said soluble material.

To provide an irrigation/aspiration apparatus by which a trouble for an operator is reduced and handling is facilitated and which is capable of preventing a sharp decrease of pressure of an anterior chamber with a simple constitution.

The apparatus has a chamber storing an irrigation liquid, a vent tube for making the liquid flow into an aspiration tube, a leading vent leading the liquid into the chamber from an irrigation tubes an outflow pipe extended in an up-and-down direction, an opening formed on a wall of the outflow pipe, of which a width is narrow and set such that an opening is closed by the liquid under surface tension when a liquid level of the liquid inside the chamber rises, an outflow vent to which the irrigation tube or a vent tube is connected, and an air chamber which is a space provided above an inflow hole of the outflow pipe.

A liquid dispensing system (100) supplies a dispense liquid using a pump (101), wherein the system minimizes contamination of, and bubble formation in, the dispense liquid. The pressure at the suction side of the pump may be limited to a predetermined value.

Provided is a method for manufacturing a container containing a content fluid, including: a molding step of stretching a bottomed tubular preform that is heated to a temperature at which the preform is stretchable so as to form the container by means of pressure of the content fluid injected into the preform through a mouth portion; a sealing step of sealing the content fluid by fitting a cap body to the mouth portion; and a pressurizing step of increasing an inner pressure of the container, wherein the container includes an invertible deforming portion that is freely invertible and deformable toward an inside of the container, and in the pressurizing step, the inner pressure of the container is increased by reducing a volume of the container by inverting and deforming the invertible deforming portion toward the inside of the container.

A hollow fiber membrane dehumidification device that possess hollow fiber membranes that cause the compressed air supplied from one end to the interior to flow through and at the same time discharge moisture in the compressed air to the outside, and by so doing exhausts the compressed air to the other end as dehumidified air. There is a reflux route that causes a portion of the dehumidified air exhausted from the hollow fiber membranes to flow back to the outside of the hollow fiber membranes as purged air and a variable restrictor that is provided on the reflux route that increases or decreases the opening-closing volume in accordance with the increase or the decrease of the pressure of the compressed air that flows through the interior of the hollow membranes.

After a chiller unit is started, an opening command of 10 pulses is output to an electronic expansion valve, and after a predetermined period of time (at the time of starting with unload) elapses, an opening command of 100 to 150 pulses is output to open the electronic expansion valve up to a predetermined opening degree. Thereafter, a discharge side refrigerant super-heat TdSH is monitored and a closing command of 1 pulse/sec is output to the electronic expansion valve to drive the same in a closing direction in a short time until TdSH becomes 20 K. After TdSH has reached 20 K, a closing command of 1 pulse/3 sec is output to the electronic expansion valve, until TdSH becomes 25 K, to drive the electronic expansion valve 3 at a smaller speed in the closing direction than that speed in the closing direction until TdSH becomes 20 K. After TdSH reaches 25 K, it is judged that an operation has shifted to a stable operation, and the opening degree of the electronic expansion valve is controlled while a suction side refrigerant super-heat TsSH is monitored.

The present invention relates to a decompression-compensating instrument for use in intraocular surgery, wherein a perfusate is supplied to an affected part of an eye via a supply channel at a predetermined pressure, and the perfusate is aspirated via an aspiration channel together with the affected tissues that are to be removed, the decompression-compensating instrument supplying the perfusate into the affected part when the internal pressure of the affected part is excessively lowered, and being constructed so as to be connectable to a point midway along the supply channel and comprising a storage-member that forms a chamber that is closable except for an opening from which the perfusate to be supplied to the supply channel flows, the capacity of the storage member being 7 cm³ to 22 cm³.

A connection piece (111) for a plug-in connection of a fluid-carrying system of lines for distributing drinking water within stories is formed without a supporting nipple. The connection piece (111) has in the region of an inner lateral surface of the first tubular part a first peripheral guiding surface (122) and a second peripheral guiding surface (117), arranged behind the first guiding surface (122) with respect to an insertion opening of the connection piece (111), for the second tubular part (160). A first axial extent of the first guiding surface (122) and a second axial extent of the second guiding surface (117) respectively make up each at least one sixth of an inside diameter of the first tubular part (112, 120). The connection piece (111) may form part of a fitting or a faucet and is suitable in particular for use with solid plastic pipes, for example of crosslinked polyethylene.

The invention discloses a hydrocracking method. The method comprises the following contents: heavy distillate oil raw material and hydrogen orderly enter a hydrorefining reactor, a hydrocracking reactor and a separation system after being mixed; a cylinder with a bottom is arranged at an upper part of the hydrorefining reactor, the height of the cylinder is 4%-20% of the height of the hydrorefining reactor, and the outer diameter of the cylinder is 85%-95% of the inner diameter of the hydrorefining reactor; holes through which the material flow can pass are formed on the bottom and the side wall of the cylinder, and the sizes of the holes are 1-40 mesh; the cylinder is filled with hydrorefining catalyst, the infrared acid amount and the active metal content of the filled catalyst are in anenhanced situation along the material flow direction, the catalyst pore volume, the particle size and the specific surface area are in a reduced situation, and the bottom of the cylinder is filled with the conventional hydrorefining catalyst. Compared with the existing hydrocracking technology, the hydrocracking process disclosed by the invention is more flexible in flow, can process more inferior raw material, and greatly improves the processing capacity of the device.

The present invention relates to a system for forming a product from a food mass, the system comprising a mould member, e.g. a mould drum with an axis of rotation and a feed pump.

The invention discloses a high-pressure magnetic resonance detection device. The high-pressure magnetic resonance detection device uses a diamond color center structure to serve as a probe structure of a detection module, and the diamond color center is prepared on an anvil surface of the diamond structure of a high pressure device, so that there is no need to occupy the space of a sample cavity,the occurrence of a circumstance that the pressure intensity capable of being provided by the high-pressure magnetic resonance detection device is reduced due to the occupation of the sample cavity space by an induction coil or the diamond color center structure is avoided, and thus the pressure intensity capable of being provided by the high-pressure magnetic resonance detection device is improved to a certain extent.

The invention discloses a power supply method and system for a nuclear power plant primary circuit hydraulic pressure test. The power supply method comprises the following steps: S1. an auxiliary power source supplies electric power through at least one row of incoming lines sequentially to start a main pump on the row of incoming lines, and carries out load restriction on the equipment on the same row of incoming line as the main pump; S2. the auxiliary power source is used to start up a charging pump on row of incoming lines through power supplied via the at least one row of incoming lines; S3, the auxiliary power supply supplies power to start a hydraulic pressure test pump to pressurize a primary circuit to a reach a target pressure value; and S4, if the auxiliary power supply is de-energized in the power supply step described above, an emergency power supply on one row of incoming lines is automatically activated to supply power to the load on the row of incoming lines. According to the power supply scheme of the application, no primary power supply is needed, and the safety and reliability degrees are high.

The present invention relates to an impulse valve structure which can prevent the pressure drop within the impulse valve and the vibration of a spool when inert gases are supplied alternately. The impulse valve structure comprises: a hollow body (210) having a first and a second gas inlets (211, 212) and a gas outlet (213); a spool (220) inserted into the inside of the hollow body (210) to partition a first and a second gas chambers (261, 262) and to alternately discharge the inert gases by means of straight reciprocal movement; a plurality of plunger guides (240) connected on the opposite ends peripheral surfaces of the hollow body (210) for securing a stopper (230); and a first and a second solenoids (251, 252) disposed on the peripheral surfaces of the plunger guide (240) for providing the magnetic force enabling the straight reciprocal movement of the spool (220).

The invention discloses an electro-hydraulic servo braking system with a pedal simulator. The electro-hydraulic servo braking system comprises a shell, a brake pedal, a pushing mechanism driven by the brake pedal, a braking mechanism driven by the pushing mechanism to achieve braking, a braking pipeline hydraulic valve actively controlled by the pushing mechanism and a pedal simulator used for simulating the feeling of the brake pedal. The flow direction of brake fluid in the brake pipeline between a push rod piston cavity and a fluid storage tank is adjusted through the hydraulic valve, due to the incompressibility and liquidity of the brake fluid, the brake fluid flows in the push rod piston cavity, a first piston cavity, a second piston cavity and the fluid storage tank through the brake pipeline in the process that a driver steps on or loosens the brake pedal, pedal damping and hysteresis of the brake pedal are simulated, the hydraulic valve is a mechanical valve body, auxiliary electric control equipment does not need to be arranged, when a system fails, the hydraulic valve effectively avoids the situation that the pressure of the brake fluid flowing into a piston cavity of the simulator is reduced, and the incompressibility and the fluidity of the brake fluid are improved.

A cartridge 1 is provided with an ink pack 9, an air bag 10 capable of abutting the ink pack 9, and a pressurizing chamber 11 that stores the ink pack 9 and the air bag 10. In the case where the amount of ink in the ink pack 9 decreases, pressurized air is introduced into the air bag 10, the ink pack 9 is pressed against the air bag 10, and thereby the internal pressure of the ink pack 9 is increased. After that, pressurized air is introduced into the pressurizing chamber 11 so as to increase the internal pressure of the pressurizing chamber 11 and pressurize the ink pack 9 from outside. Accordingly, the ink in the ink pack 9 is supplied from an ink supply port 12 to the inkjet printer 2.

A fuel injection valve (1), in particular an injector of a fuel injection device for compressing-air and self-ignition type internal combustion engine, is provided with a control valve (55) operated by an actuator (45). The control valve includes a valve rod (29), a valve plate (15) and a throttle plate (10). The valve plate (15) includes a through hole (28), the valve rod (29) is guided in the through hole (28), and the valve plate is provided with a dead slot (32) connected with the through hole (28) at a side facing the throttle plate (10). The throttle plate (10) is provided with an outputthrottle valve (19) communicated with the dead slot (32) of the valve plate (15) and a passage (20) connected with a low pressure return part (26), and the passage may be closed by the valve rod (29). When the control valve is operated, the valve rod releases the connection of the output throttle vlave (19) of the throttle plate (10) and the passage (20) of the throttle plate (10) by the dead slot (32) of the valve plate (15). Thereby, it is possible to implement pressure balance of the control valve (55). Furthermore, the valve plate (15) may have high component strength.

The invention relates to a hill start assist system (1) for a motor vehicle (101), comprising an automated transmission (3), which has an electronic controller (5), and a valve assembly (7) for connecting between a compressed-air source (102) and a number of brake systems (103) of the motor vehicle (101) in order to conduct compressed air from the compressed-air source (102) to the brake systems (103) by means of actuation of a brake pedal unit (104). According to the invention, the valve assembly (7) is connected to the electronic controller (5) in a signal-conducting manner, and the electronic controller (5) is designed to activate and deactivate the valve assembly (7) in such a way that, in the deactivated state, the brake pressure triggered by means of actuation of the brake pedal unit (104) is conducted to the brake systems in an uninfluenced manner and, in the activated state, a triggered brake pressure is conducted to the number of brake systems (103) and is confined there.

A thermostatic valve to connect a heat source, in particular a gear drive with a heat exchanger, particularly a motor vehicle, having a thermostatic valve housing with a first inlet connection for a first inlet port and a second inlet connection for a second inlet port as well as a first outlet connection for a first outlet port and a second outlet connection for a second outlet port, with a moveable working element in an intake opening of the thermostatic valve housing to open and close the inlet and outlet ports and a separate restriction element is provided in the thermostatic valve housing between the first inlet connection and the first outlet connection.