31 results about "Disjoining pressure" patented technology

A system and methods for proportionally controlling hydraulically actuated downhole flow control devices using derived feedback control. The system comprises a downhole flow control device with a moveable element in a stationary housing. The moveable element is actuated by a balanced hydraulic piston. Hydraulic lines are fed to either side of the piston to effect actuation in either direction. A processor controlled, surface mounted hydraulic system supplies fluid to the piston. A pressure sensor measures supply pressure to the piston and a cycle counter indicates pump cycles and both sensors generate outputs to the processor. The downhole moveable element is cycled between end stops until successive moveable element breakout pressures are within a predetermined value as measured by the surface pressure sensor. A relationship is then derived between moveable element movement and pumped fluid volume and the relationship is used to move the moveable element to a predetermined position to control flow.

The invention relates to a comprehensive utilization method of an ionic membrane electrolytic saline solution waste liquid, which comprises the step of sending dechlorinated dilute brine coming out of an electrolytic tank to a membrane process denitration device for denitration. The comprehensive utilization method is characterized by comprising the following steps of: pre-adjusting the pH value of a system to 3-8 by using a saline solution pH value automatic control device, exchanging the heat till the temperature of the system is 25-50 DEG C, removing free chlorine till the content of chlorine is less than or equal to 3 ppm, sending into a primary membrane separation system for primary membrane separation and controlling the primary membrane separation pressure to be not higher than 3.0MPa; and then sending into a secondary membrane separation system for secondary membrane separation, controlling the secondary membrane separation pressure to be not higher than 3.5 MPa, separating to obtain desulfurized brine and concentrated nitrate water, sending the dissolved desulfurized brine to an ionic membrane electrolytic saline solution device for reutilization and sending the concentrated nitrate water to a thermal method denitration device to prepare thenardite. The invention has the beneficial effects that as the two stages of membrane separation systems are adopted, the pressure is more stable, the membrane service life is long, and the separation effect is good; the content of sodium sulfate in the separated concentrated nitrate water can reach above 90 g / l, and the content of sodium sulfate in the desulfurized brine can reach below 3 g / l.

An arrangement for reducing a rotational speed of a rotating member includes a first and second pressure member arranged at a distance from each other and an opposite sides of the rotating member for movement relative to each other between a retracted position and a forward position engaging the rotating member. The arrangement includes an adjustment device including a friction structure forming a friction joint with one of the pressure members for maintaining a position relative to one another provided a maximum friction force is not exceeded. The arrangement further includes a spring acting on the friction structure for separating the pressure members after having been compressed. The spring has a gradually increasing spring force between a non-compressed state and a totally compressed state. An intermediate spring force value of the spring, which corresponds to compression of the spring to an extent less than the totally compressed state, equals a maximum friction force of the friction joint so that the friction structure is forced to move relative to the pressure member, with which it forms the friction joint, when the maximum friction force is exceeded.

An apparatus for focusing and for storage of ions and an apparatus for separation of a first pressure area from a second pressure area are disclosed, in particular for an analysis apparatus for ions. A particle beam device may have at least one of the abovementioned apparatuses. A container for holding ions and at least one multipole unit are provided. The multipole unit has a through-opening with a longitudinal axis as well as a multiplicity of electrodes. A first set of the electrodes is at a first radial distance from the longitudinal axis. A second set of the electrodes is in each case at a second radial distance from the longitudinal axis. The first radial distance is less than the second radial distance. Alternatively or additionally, the apparatus may have an elongated opening with a radial extent. The opening has a longitudinal extent which is greater than the radial extent.

The invention provides a dynamic extraction treatment method of cut tobacco in a heating non-combustion state. The method concretely comprises the following steps of (1) taking tobacco raw materials for use; (2) putting the tobacco raw materials in the step (1) into a supercritical extraction device; adding a certain number of entrainers at certain extraction pressure and temperature; and after the extraction time is reached, taking out extracts to obtain the extracted cut tobacco (the extraction temperature is 40 to 50 DEG C; the time is 2 to 5h; the extraction pressure is 20 to 30 MPa; the separation pressure is 4 to 8 MPa; the entrainers are selected from 1,2-propanediol, glycerol or a mixture of 1,2-propanediol and glycerol; and the consumption of the entrainers is 5 to 20 percent of the materials); and (3) uniformly mixing the cut tobacco obtained in the step (2) with a moisture preservation agent; and then performing balancing treatment for a period of time.

The invention discloses a method for extracting black wolfberry seed oil by virtue of subcritical fluid. The method comprises the steps: (1) placing dry black wolfberry seeds and an extracting agent into an extraction kettle of a subcritical fluid extraction apparatus according to a mass-volume ratio of 1:1 to 1: 20, continuously extracting for 1 to 20 times to obtain extract, wherein the extraction time is 10 to 15 minutes per time; (2) separating the extract in the step (1) by utilizing a pressure reduction heating method under the condition that the separation pressure is 0.10 to 1.95 MPa and the separation temperature is 10 to 90 DEG C, to obtain an extraction solution; (3) standing the extraction solution for 10 to 90 minutes under the room temperature, to obtain the black wolfberry seed oil. By adopting the method, not only can the production cost be effectively reduced, the extraction and separation time is shortened, and the consumption of solvent and energy consumption in the process flow can be reduced; moreover, the method is simple in process flow, high in operability, high in extraction efficiency, environment-friendly, pollution-free, good in safety and repeatability and capable of realizing the industrialized continuous mass production.

A solid / fluid separation module (300) and press comprises at least one filter unit (301) for a solid / fluid separating press having a barrel with a core opening (112) for at least one conveyor screw. The filter unit includes a pair of end plates (321,322) and a plurality of intermediate filter plates (314) placed one behind the other and sealingly compressed into a plate stack (310) between the end plates. Each intermediate plate (314) has at least one drainage perforation (362) separate from the core opening, the core opening and drainage perforation each extending from a front face to a back face of the intermediate filter plate. In the filter unit, all end plates and barrel plates are aligned such that the core openings form the core passage of the filter block and such that the drainage perforations form an internal fluid collection chamber (338) within the filter unit.

A gloss-watermark pattern is produced on a rotatable fixing member including a thermoplastic layer having a surface and a selected thickness. Particles having a Young's modulus of at least 1 GPa are applied in a selected deposition pattern to a selected area of a pressure member. The pressure member and the fixing member are pressed together so that the applied particles indent the surface of the fixing member to form the gloss-watermark pattern. The pressure member and the fixing member can then be mechanically separated and a printed image on a receiver can be fixed using the fixing member having the gloss-watermark pattern. A gloss watermark corresponding to the gloss-watermark pattern is thus formed on the printed image.

The invention provides an oil-water separation membrane with high oil stain resistance, which has a porous structure and is super-hydrophilic and super-oleophobic. The contact angle of water on the surface of the film is 3-10 degrees while the contact angle of oil liquid under water is 140-165 degrees. The invention also discloses a preparation method of the membrane. The method particularly includes the steps of preparing fluorine-containing resin, preparing a membrane material, and performing scrape coating to form the membrane. The invention also provides an application of the membrane in separation of an oil-water mixture system. The membrane is good in oil removal effect, strong in oil stain resistance, high in film flux and low in separation pressure. The membrane allows low-pressure operations, is low in energy consumption and cost, and has excellent oil removal effects when being applied in various types of wastewater.

The invention belongs to the field of analytical chemistry, and discloses a method used for measuring capillary electrophoresis electroosmotic flow. The method comprises following steps: a buffer containing a dissolved marker is introduced into a capillary tube as a sample; the two sides of the capillary tube are applied with a first voltage and a certain separation pressure 1, and a first migration time of the marker is detected; the sample in introduced into the capillary tube for a second time; the two sides of the capillary tube are applied with a second voltage, and a separation pressure2 equal to the separation pressure 1, and a second migration time is detected, wherein the direction of the separation pressure 1 and the direction of the separation pressure 2 are the same, the voltage amplitude of the first voltage is equal to that of the second voltage, and the polarity of the first voltage is opposite to that of the second voltage; and at last electroosmotic flow mobility is calculated based on the first migration time and the second migration time. The method is capable of increasing electroosmotic flow measuring precision, and realizing rapid measurement of weak electroosmotic flow of coated capillary tubes.

Disclosed are a sheet separating and feeding device, and an image forming device. The sheet separating and feeding device and the image forming device comprise a sheet stowage unit, a rotation conveying unit, a friction portion, a first force applying unit, and a guide portion. The sheet stowage unit enables sheets to be stowed in a multi-layer shape in the state of a downward inclined front end part of the sheet feeding direction. The rotation conveying unit is abutted against the uppermost sheet of the sheet stowage unit, and conveys the sheets downward. The friction portion is disposed at the lower portion of the rotation conveying unit, and provided with a gap for separating the passing sheets between the friction portion and the rotation conveying unit. The first force applying unit is used for applying a force towards the opposite side of the friction portion or the rotation conveying unit, so that a separating pressure is applied on the sheets clamped in the separating gap. The guide portion is fixedly disposed between the separating gap and the sheet stowage unit, disposed at a position that is not overlapped with the extension area of the upstream direction of the separating gap, and abutted against the front end of the sheet in the separating gap.

The invention relates to a comprehensive utilization method of an ionic membrane electrolytic saline solution waste liquid, which comprises the step of sending dechlorinated dilute brine coming out of an electrolytic tank to a membrane process denitration device for denitration. The comprehensive utilization method is characterized by comprising the following steps of: pre-adjusting the pH value of a system to 3-8 by using a saline solution PH value automatic control device, exchanging the heat till the temperature of the system is 25-50 DEG C, removing free chlorine till the content of chlorine is less than or equal to 3 ppm, sending into a primary membrane separation system for primary membrane separation and controlling the primary membrane separation pressure to be not higher than 3.0 MPa; and then sending into a secondary membrane separation system for secondary membrane separation, controlling the secondary membrane separation pressure to be not higher than 3.5 MPa, separating to obtain desulfurized brine and concentrated nitrate water, sending the dissolved desulfurized brine to an ionic membrane electrolytic saline solution device for reutilization and sending the concentrated nitrate water to a thermal method denitration device to prepare thenardite. The invention has the beneficial effects that as the two stages of membrane separation systems are adopted, the pressure is more stable, the membrane service life is long, and the separation effect is good; the content of sodium sulfate in the separated concentrated nitrate water can reach above 90 g / l, and the content of sodium sulfate in the desulfurized brine can reach below 3 g / l.

The present invention provides an arrangement for passing a line in a load-free manner through a pressure frame of a fuselage of an aircraft or spacecraft, including an opening penetrating the pressure frame, through which opening the line is passed, the line being mechanically decoupled from the pressure frame; and a flexible sealing device arranged outside the opening at least in portions, which sealing device is simultaneously operatively connected to the line and the pressure frame for the pressure-tight separation of a first side from a second side of the pressure frame. The present invention also provides a fuselage for an aircraft or spacecraft having an arrangement of this type and an aircraft or spacecraft having an arrangement of this type or having a fuselage of this type.