23 results about "Decompression chamber" patented technology

A device for generating carbon dioxide snow has a decompression chamber into which a decompression nozzle opens for decompressing supplied liquid carbon dioxide. According to the invention, the decompression nozzle is integrated into a decompression fitting designed as a two-fluid nozzle, into which, in addition to a supply line for liquid carbon dioxide terminating at the decompression nozzle, a supply line for a liquid or gaseous cleaning medium opens. During a break in operation of the device, when no carbon dioxide snow is being generated, the cleaning medium serves to maintain overpressure in the decompression chamber and / or to remove contaminants adhering to an inner wall of the decompression chamber.

The invention belongs to the cross technical field of deep well mine filling and energy recovery, and particularly relates to a deep well filling pressure reduction and graded pressure energy recovery power generation system, an energy efficiency monitoring method and an operation control method. Comprising an earth surface filling preparation station, a filling vertical pipe, a decompression chamber, a first-stage coupling rotational flow driving device, a second-stage coupling rotational flow driving device, a pressure stabilizing buffer tank and a tail end filling working face. The earth surface filling preparation station conveys slurry into the pressure reduction chamber through the filling vertical pipe, the slurry is conveyed to the first-stage coupling rotational flow driving device through pressure reduction in the pressure reduction chamber, and the first-stage coupling rotational flow driving device drives the first-stage permanent magnet generator to generate electricity. The slurry is conveyed to a secondary coupling rotational flow driving device through a transition pipe after coming out of the primary coupling rotational flow driving device, and the secondary coupling rotational flow driving device drives a secondary permanent magnet generator to generate electricity; the slurry flows out of the secondary coupling rotational flow device and then enters the pressure stabilizing buffer tank, and then is conveyed to a tail end filling working face through the pressure stabilizing buffer tank.

The present application provides a food vacuum cooling method and a food vacuum cooling device capable of further shortening the operation time. In the food vacuum cooling method and the food vacuum cooling device of the present application, a vacuum chamber is composed of a positive chamber, a decompression chamber connected to the positive chamber and including at least an outer chamber and an inner chamber, and a re-compression chamber including one or more chambers. The outer chamber of the decompression chamber is prepared to be decompressed from the atmospheric pressure to a specified pressure, and the inner chamber of the decompression chamber is prepared to be decompressed from the specified pressure decompressed in the outer chamber of the decompression chamber to a pressure required for cooling. The food moved into the positive chamber through the decompression chamber is cooled for a specified time in the positive chamber maintaining the vacuum degree required for cooling, and then moved out through the re-compression chamber. The opening and closing of the doors in each chamber, the decompression of the chamber requiring decompression, the pressure increase of the chamber requiring pressure increase, and the food conveying are performed so that the operation in each chamber is completed within the allowable processing time calculated in advance based on the specified cooling time.

The invention relates to the field of magnesium hydride production, in particular to a continuous magnesium hydride production system and method. Through optimized process design, a tubular main reaction kettle controls constant temperature and pressure, a double-helix mechanism is arranged in the tubular main reaction kettle to stir and push powder to move directionally, hydrogen and magnesium powder mixed with a catalyst are injected from a top decompression chamber at the inlet end of the reaction kettle, and synthesized magnesium hydride powder is discharged from an outlet at the tail end of the reaction kettle and is output. According to the system for continuously producing magnesium hydride, solid magnesium hydride can be continuously and stably synthesized, the hydrogen content of magnesium hydride can reach 7.6 wt.% at most, compared with a magnesium vapor-hydrogen reaction, the magnesium hydride production method provided by the invention is lower in reaction temperature and controllable in pressure, the conversion efficiency can reach 99.5% at most, and the production cost is low. And industrial large-scale synthesis of magnesium hydride is realized.

The beverage dispensing head (8) comprises a beverage supply conduit (11); a distribution chamber (12) fluidly connected to the beverage supply conduit (11) and equipped with two calibrated outlet orifices; two decompression chambers (14) which are fluidly connected to the distribution chamber (12) respectively via the two calibrated outlet orifices, each of the decompression chambers (14) being equipped with a discharge orifice; and two beverage dispensing nozzles (9) which are fluidly connected respectively to the two discharge orifices and through which a prepared beverage is able to flow into a container positioned below the beverage dispensing head (8). Figure 4

An ink jet recording method of recording an image through use of an ink jet recording apparatus includes a recording head including: an ejection orifice configured to eject an aqueous ink; a pressure chamber in communication with the ejection orifice; an ejection element, which is arranged in the pressure chamber, and which is configured to generate energy for ejecting the aqueous ink from the ejection orifice; a liquid retention chamber configured to supply the aqueous ink to the pressure chamber, a decompression chamber, which is arranged adjacent to an upper side in a vertical direction of the liquid retention chamber, and which is configured to decompress an inside of the liquid retention chamber; and a gas permeable membrane arranged at a boundary between the liquid retention chamber and the decompression chamber. The ink jet recording method includes applying an aqueous ink ejected from the ejection orifice to a recording medium.

The present application provides a protective sheet arrangement device and a protective sheet arrangement method for arranging a protective sheet on a substrate while controlling the adhesion of the protective sheet to the substrate. The protective sheet arrangement method arranges a protective sheet on the front surface of a substrate, and includes the following steps: a substrate placement step of placing the substrate on a support table of a decompression chamber that is separable into an upper housing and a lower housing and has the support table; a space separation step of separating a space in the decompression chamber into a first chamber and a second chamber by placing the protective sheet so as to face the front surface of the substrate; a decompression step of decompressing the first chamber to a predetermined air pressure and decompressing the second chamber; a protective sheet adhesion step of opening the decompressed second chamber to the atmosphere, thereby causing the protective sheet to adhere to the substrate with a predetermined strength; and a substrate removal step of opening the decompressed first chamber to the atmosphere, separating the lower housing from the upper housing, and removing the substrate with the protective sheet adhered thereto from the decompression chamber.

A gas introducing device is provided that can alleviate a sudden increase in pressure in a decompression chamber when the chamber is opened to the atmosphere, while simplifying the structure and control. [Solution] A gas introduction device (10) is attached to the atmosphere intake side of an atmosphere release valve (6) that opens a decompression chamber (2) that is decompressed to a pressure lower than atmospheric pressure to the atmosphere, and is equipped with a valve body (18) that opens and closes the atmosphere intake side of the atmosphere release valve, a small amount of gas introduction section (14) that has an opening area smaller than the opening area of ​​the valve body when it is in the fully open position and is able to introduce gas regardless of the position of the valve body, and a biasing mechanism (20) that biases the valve body, which is in a closed position due to the negative pressure in the decompression chamber when the atmosphere release valve is opened, towards the fully open position.

A cavitator utilizes hydrodynamic effects to create a compression-decompression effect on a fluid or on a mixture of fluids, resulting in cavitation effects and the generation of ultrafine bubbles. The cavitator comprises a fluid inlet, a fluid outlet, and a compression-decompression chamber situated between the inlet and outlet. The fluid is forced through the chamber under controlled pressure, causing hydrodynamic effects to generate the compression-decompression effect and ultrafine bubbles. This results in cavitation effects, which can be utilized for various applications, such as cleaning, mixing, or milling. The cavitator is designed to be compact, efficient, easy to use, requiring minimal maintenance, and offers a cost-effective solution for generating cavitation effects.

The utility model discloses a two-stage pressure reducing valve capable of preventing a sealing ring from falling off. The two-stage pressure reducing valve comprises a valve body, a valve cover, a first-stage pressure reducing executing mechanism and a second-stage pressure reducing executing mechanism, the valve body is provided with an air inlet, a first-stage pressure reduction cavity, a middle channel, a second-stage pressure reduction cavity and an air outlet, the air inlet is formed in one end of the valve body, the air outlet is formed in the other end of the valve body, the first-stage pressure reduction cavity, the middle channel and the second-stage pressure reduction cavity are located between the air inlet and the air outlet, and the middle channel is located between the first-stage pressure reduction cavity and the second-stage pressure reduction cavity. The first-stage pressure reducing cavity is positioned between the air inlet hole and the middle channel; the first-stage pressure reducing cavity and the second-stage pressure reducing cavity can be communicated with the outside, a valve cover is detachably connected to the valve body, and the valve cover is used for isolating the first-stage pressure reducing cavity and the second-stage pressure reducing cavity from the outside; the first-stage pressure reduction executing mechanism is installed at the first-stage pressure reduction cavity. According to the two-stage pressure reducing valve capable of preventing the sealing ring from falling off, the problem that in the prior art, the air leakage risk exists due to the fact that connection between the first-stage pressure reducing chamber and the second-stage pressure reducing chamber is achieved through inserting connection is solved.

The beverage dispensing head (8) has a beverage supply duct (11); a distribution chamber (12) fluidically connected to the beverage supply duct (11) and provided with two calibrated outlet orifices; two decompression chambers (14) which are respectively fluidically connected to the distribution chamber (12) via the two calibrated outlet orifices, each of the decompression chambers (14) being provided with a discharge orifice; and two beverage dispensing nozzles (9) which are respectively fluidically connected to the two discharge orifices and through which a ready-made beverage is able to flow into a container positioned below the beverage dispensing head (8).

An ink jet recording method of recording an image through use of an ink jet recording apparatus includes a recording head including: an ejection orifice configured to eject an aqueous ink; a pressure chamber in communication with the ejection orifice; an ejection element, which is arranged in the pressure chamber, and which is configured to generate energy for ejecting the aqueous ink from the ejection orifice; a liquid retention chamber that can supply the aqueous ink to the pressure chamber; a decompression chamber, which is arranged adjacent to the liquid retention chamber, and which is configured to be capable of decompressing an inside of the liquid retention chamber; and a gas permeable membrane having a thickness of 0.01 mm or more and arranged at a boundary between the liquid retention chamber and the decompression chamber.

The application relates to the field of aircraft technology, in particular to an inbuilt compressed air and carbon dioxide linkage drainage system and an aircraft. The drainage system comprises a drainage device, a ballast water tank, a first connecting pipeline and a control unit, a first power unit is internally provided with a first storage chamber for storing liquid carbon dioxide, a second power unit is internally provided with a second storage chamber for storing high-pressure air, a decompression unit is internally provided with a decompression chamber, the first storage chamber and the second storage chamber are selectively communicated with the decompression chamber; the ballast water tank is provided with a third storage chamber selectively communicated with the decompression chamber; the first connecting pipeline is connected with the second power unit and the decompression unit, and a first on-off valve is arranged on the first connecting pipeline; the first power unit is suitable for, under the control of the control unit, changing the liquid carbon dioxide into high-pressure supercritical carbon dioxide, and the high-pressure supercritical carbon dioxide is decompressed by the decompression chamber and then enters the third storage chamber, so that the first connecting pipeline selectively communicates the second storage chamber and the decompression chamber.

To provide a pressure regulator that can simplify the piping related to the supply of liquefied petroleum gas and suppress the adverse effects of drainage. [Solution] The pressure regulator 1 comprises a high-pressure chamber 10, a decompression chamber 20, a valve element 30, a diaphragm 40, a lever 50, and a drain accumulation section 60. The high-pressure chamber 10 has an inlet connection section 11 that opens downward on the pressure regulator 1 and is connectable to one end of an upstream pipe. The decompression chamber 20 is connected in communication with the upper part of the high-pressure chamber 10 and has an outlet connection section 21 that opens upward on the pressure regulator 1 and is connectable to one end of a downstream pipe. The valve element 30 is provided between the high-pressure chamber 10 and the decompression chamber 20 and is capable of reciprocating in the up and down directions of the pressure regulator 1. The diaphragm 40 is provided between the decompression chamber 20 and atmospheric pressure A and is capable of adjusting the pressure of the gas inside the decompression chamber 20. The lever 50 is pivotally supported at a predetermined position 22 inside the decompression chamber 20 so as to be able to swing, with one end 50a connected to the valve body 30 and the other end 50b connected to the diaphragm 40, and is capable of adjusting the flow rate of gas from the high-pressure chamber 10 to the decompression chamber 20. The drain accumulation section 60 is connected in communication with the lower part of the decompression chamber 20, and is capable of discharging drain D generated inside the decompression chamber 20 to the outside.

The utility model discloses a three-stage pressure reducing valve which comprises a valve body, an air inlet connector is arranged on the left side of the valve body, the air inlet connector is connected with an air inlet connector, a first-stage pressure reducing chamber is arranged on the right side of the valve body, and the first-stage pressure reducing chamber is communicated with the air inlet connector. A second-stage pressure reducing chamber is arranged at the lower end of the valve body, and the second-stage pressure reducing chamber is communicated with the first-stage pressure reducing chamber through a first air channel; a third-stage pressure reducing chamber is arranged at the upper end of the valve body and communicates with the second-stage pressure reducing chamber through a second air channel. An air outlet connector is formed in the rear side of the valve body and connected with an air outlet connector, and the air outlet connector communicates with the third-stage pressure reduction chamber through a third air channel. By arranging the three-stage pressure reduction chamber and the elastic elements such as the spring and the disc spring matched with the three-stage pressure reduction chamber, a multi-stage pressure division structure is formed, pressure reduction adjustment of high-pressure gas can be achieved for a long time, and the multi-stage pressure reduction chamber is suitable for scenes with different pressure requirements.

The invention relates to the technical field of underwater tunnel and deep foundation pit engineering construction, in particular to a double-layer steel sheet pile cofferdam underwater tunnel open excavation construction method with a drainage pressure reduction cavity, and the construction method comprises the specific steps that outer side steel sheet piles are driven in an underwater construction area along the outer contour of a tunnel foundation pit, and an outer layer cofferdam used for retaining soil is formed; inner side steel sheet piles are arranged on the inner side of the outer-layer cofferdam to form an inner-layer cofferdam for water stopping, and a drainage pressure reduction cavity is formed between the inner-layer cofferdam and the outer-layer cofferdam; a drainage device is arranged in the drainage pressure-reducing cavity, and active precipitation is conducted on the drainage pressure-reducing cavity through the drainage device; foundation pit excavation is conducted in the inner-layer cofferdam, and open excavation construction of the tunnel main body structure is completed in the dry operation environment; by means of the arrangement that the double-layer steel sheet pile cofferdam and the drainage pressure reduction cavity are combined, water pressure can be transferred and released from the water stop cofferdam, the water pressure borne by the inner-layer water stop cofferdam can be reduced, and the water stop safety of the cofferdam is improved.

The present invention relates to a cavitation process for the preparation of a water-in-oil emulsion, comprising the following steps: a) adding water to the fuel in a range of 5% to 35% of the total volume; b) feeding both water and fuel into a closed space, where the mixture is accelerated by increasing the pressure caused by a pumping system (21) (22); c) pushing the mixture through an acceleration tunnel (3) where it impinges on a first cavitation barrier with adjustable screws (33); d) feeding the mixture through a first decompression chamber (4) which causes a reduction in pressure and subsequent vaporization of the mixture to form a vaporized mixture, forming water droplets whose diameter ranges from 1 μm to 3 μm e) feeding the vaporized mixture to the second cavitation barrier (5) with adjustable screws (33),in a second decompression chamber and adjusting the number and arrangement of the adjustable screws in order to control the formation of water droplets with a diameter between 0.1 μm and 1 μm. This invention further relates to a cavitation reactor and an emulsion obtained from the process.,

The invention relates to the field of wastewater treatment, in particular to a multifunctional steady-flow micro-nano release device and a water treatment system.The device comprises a first-stage pressure reduction chamber, a primary mixing chamber and a release chamber, the first-stage pressure reduction chamber is communicated with an air dissolving water pipe, and a second-stage pressure reduction chamber is arranged between the first-stage pressure reduction chamber and the primary mixing chamber; a secondary vortex chamber is arranged between the primary mixing chamber and the release chamber, a medicine inlet hole is formed in the wall of the primary mixing chamber, and the sectional area of the primary mixing chamber and the sectional area of the release chamber are both larger than the sectional area of the secondary vortex chamber; according to the invention, continuous pressure reduction is carried out on air-dissolved water through the first-stage pressure reduction chamber and the second-stage pressure reduction chamber, bubbles released into the reaction zone from the release device are ensured to be high in density, small in size and uniform, so that the air flotation effect is improved, the multi-stage mixing chamber is also arranged, bubble water and a flocculant solution are uniformly mixed and then are released to the reaction zone through the release chamber, and the air flotation effect is improved. The reaction efficiency of the flocculating agent is further improved.

The invention relates to a high-altitude product stability simulation evaluation measurement method and measurement device. The measurement device comprises a decompression chamber and a test box. A temperature and humidity adjusting system and a vacuum system are arranged in the test box and used for simulating temperature, humidity and air pressure environments under different altitude conditions. After a person carries a sample to enter the decompression chamber for initial decompression adaptation, the sample enters the test box to complete sample connection and workflow operation verification, and the safety of the person is guaranteed through a protective helmet and a physical sign monitoring device in the test process. Through graded pressure adjustment of the decompression chamber and the test box, multi-parameter cooperative control of temperature, humidity and air pressure is realized, product function and performance verification under complex working flow is supported, and a high-altitude operation scene is truly restored. According to the method and the device, the functional effectiveness, the performance stability and the operation safety of the product in the high-altitude environment can be comprehensively evaluated, the problems that an existing low-air-pressure test box cannot be subjected to complex operation verification and the environment simulation is insufficient are solved, and the method and the device have good engineering application and clinical verification values.

A pressure regulator for a liquefied petroleum gas container is provided. [Solution] A high-pressure chamber (10) is provided above a pressure regulator (1). An inlet connection (20) opens horizontally on one side of the high-pressure chamber and is connectable to one end of an upstream pipe. A decompression chamber (30) is connected to the lower part of the high-pressure chamber and communicates with the high-pressure chamber. A nozzle (40) is provided between the high-pressure chamber and the decompression chamber. A valve element (50) is provided below an outlet (40b) of the nozzle and is capable of reciprocating vertically within the decompression chamber. A diaphragm (60) is provided between the decompression chamber and atmospheric pressure (A) and is capable of adjusting the gas pressure in the decompression chamber. A lever (70) is pivotally supported at a predetermined position (31) inside the decompression chamber and has one end (70a) connected to the valve element and the other end (70b) connected to the diaphragm, allowing adjustment of the gas flow rate from the high-pressure chamber to the decompression chamber. An outlet connection (80) opens downward at the lower part of the decompression chamber and is connectable to one end of a downstream pipe. The inlet (40a) of the nozzle is located above the inlet connection.

To provide an inkjet recording method excellent in suction recovery properties and ink discharge stability.SOLUTION: Using an ink jet recording apparatus including a recording head including an ejection orifice for ejecting an aqueous ink, a pressure chamber communicating with the ejection orifice, an ejection device disposed in the pressure chamber and generating energy for ejecting the aqueous ink from the ejection orifice, a liquid storage chamber capable of supplying the aqueous ink to the pressure chamber, a decompression chamber disposed adjacent to the liquid storage chamber and configured to be capable of decompressing the inside thereof, and a gas permeable membrane having a thickness of 0. 01mm or more disposed at a boundary between the liquid storage chamber and the decompression chamber, An ink jet recording method includes applying an aqueous ink ejected from an ejection orifice to a recording medium to record an image. The surface tension γ I (mN / m) of the aqueous ink at 25 °C. and the surface energy γ m (mN / m) of the gas-permeable membrane satisfy the relationship of the following formula (1). Γ I - γ m ≤ 11 (1) SELECTED DRAWING: None

This invention discloses a device for emotional catharsis and regulation in students' mental health, relating to the field of mental health equipment technology. It includes a decompression chamber with a hinged, silent door. A platform is installed inside the chamber via bolts, and vertically distributed columns are mounted on the platform. A catharsis module for emotional catharsis is also mounted on the platform, comprising an exercise mechanism, a liquid level indicator, and a breathing regulation mechanism. The exercise mechanism includes a turntable rotatably connected to the top of the columns, with concentrically distributed main rotating shafts fixedly mounted on the turntable. These main rotating shafts are rotatably connected to the columns via bearings. A secondary rotating shaft, driven by the main rotating shaft, is also provided on the platform. During use, students can release limb tension by rotating and pressing the turntable. The platform and columns provide students with a comfortable and stable catharsis posture, allowing for effective release of negative emotions through movement without the need for physical punishment.

To provide an inkjet recording method excellent in suction recoverability and ink discharge stability even when using ink containing wax for recording an image excellent in scratch resistance.SOLUTION: Using an ink jet recording apparatus including a recording head including an ejection orifice configured to eject an aqueous ink, a pressure chamber communicating with the ejection orifice, an ejection element disposed in the pressure chamber and configured to generate energy for ejecting the aqueous ink from the ejection orifice, a liquid storage chamber configured to supply the aqueous ink to the pressure chamber, a depressurization chamber disposed above and adjacent to the liquid storage chamber in a vertical direction and configured to depressurize an inside thereof, and a gas permeable membrane disposed at a boundary between the liquid storage chamber and the depressurization chamber, An ink jet recording method includes applying an aqueous ink ejected from an ejection orifice to a recording medium to record an image. A melting point Tw (°C) of the wax particles in the aqueous ink and a maximum temperature Ti (°C) of the aqueous ink in the liquid storage chamber satisfy a relationship of the following Expression (1). Tw-Ti ≥ 10 (1) SELECTED DRAWING: None