34results about How to "Accurate pressurization" patented technology

An implantable penile prosthesis having an inflatable cylinder with at least one piezoelectric pump for transferring fluid between an integrated reservoir and pressure chamber within the inflatable cylinder. The piezoelectric pump includes an actuator powered by an inductor coil integrated into the inflatable cylinder allowing for wireless control of the inflation and deflation of the inflatable cylinder. An external control system having a corresponding inductive coil can be used to supply a magnetic field for creating a current in the inductor coil integrated into the inflatable cylinder.

The invention discloses a rock-soil mass direct-shear test apparatus capable of quickly and accurately compressing. The rock-soil mass direct-shear test apparatus comprises a platform and a default sliding rail arranged in the middle of the platform, wherein the default sliding rail comprises a long side; a lower shear box is arranged at the upper part of the default sliding rail; the lower shear box slides along the long side of the default sliding rail; an upper shear box is arranged at the upper part of the lower shear box; a rigid transfer rod is arranged in the normal direction of the upper shear box; the rigid transfer rod is fixedly connected with a normal compression system; the normal compression system transfers default stress generated by the normal compression system to the normal direction of the upper shear box through the rigid transfer rod; one side of the lower shear box is connected with a tangential compression system; the other side of the lower shear box is connected with a displacement measurement system and a pull pressure measurement system. The rock-soil mass direct-shear test apparatus can quickly and accurately compress, the direct-shear test efficiency and accuracy are improved and the rock-soil mass direct-shear test apparatus is suitable for research on various rock-soil mass shear properties.

The invention relates to a diffusion bonding preparation method of a titanium alloy hollow structure, which comprises the following steps: machining of titanium alloy prefabricated blanks: machining two titanium alloy prefabricated blanks which are oppositely combined into a hollow structure; coating for the first time: coating the two oppositely combined titanium alloy prefabricated blanks with ablock type high-temperature alloy coating mold; coating for the second time: coating the block type high-temperature alloy coating mold with a low-carbon steel jacket, and then sequentially carryingout edge sealing welding, baking and vacuum packaging on the low-carbon steel jacket; diffusion bonding: placing the low-carbon steel jacket into a gas diffusion furnace, and conducting diffusion bonding on the two titanium alloy prefabricated blanks; and finished product machining: taking out the titanium alloy prefabricated blanks obtained after diffusion bonding, and machining a finished workpiece of a hollow structure.

An implantable penile prosthesis having an inflatable cylinder with at least one piezoelectric pump for transferring fluid between an integrated reservoir and pressure chamber within the inflatable cylinder. The piezoelectric pump includes an actuator powered by an inductor coil integrated into the inflatable cylinder allowing for wireless control of the inflation and deflation of the inflatable cylinder. An external control system having a corresponding inductive coil can be used to supply a magnetic field for creating a current in the inductor coil integrated into the inflatable cylinder.

The invention discloses a device for measuring actual triaxial creep of a geotechnical engineering test specimen. The device comprises a support structure, and also comprises four confining pressure plates, an upper compression plate and a lower compression plate so as to form a closed cavity for wrapping a test specimen, wherein the confining pressure plates comprise two long confining pressure plates and two short confining pressure plats, the upper compression plate and the lower compression plate are a rectangular top steel plate and a rectangular bottom steel plate, the two outwards-bent L-shaped long confining pressure plates are overlapped on two adjacent side surfaces of the bottom steel plate, the two outwards-bent L-shaped short confining pressure plates are overlapped on the other two side surfaces of the bottom steel plate, the bottom ends of the short of the bottom steel plate plates are arranged on the bottom steel plate, the top steel plate is overlapped at the top ends of the long confining pressure plates, the top steel plate is clung to the inner side surfaces of the two short confining pressure plates, pressure sensors corresponding to the four confining pressure plates and the upper compression plate and the lower compression plate are vertically arranged inside the support structure, and grating rulers are arranged on the pressure sensors. The invention also provides a method for measuring the actual triaxial creep of the geotechnical engineering test specimen by using the device.

The invention discloses a miniature air pump and a one-way valve for the same. The one-way valve is formed by assembling a cavity seal, an elastic arm, a metal gasket and a sealing ring together, wherein the elastic arm extends inwards from the cavity seal and is connected with the upper end of the metal gasket, and the sealing ring is fixed at the bottom end of the metal gasket. The one-way valve of the invention can be applied to the one-way sealing of gas up to 20 MPa, has the advantages of small space occupation, corrosion resistance, easy mounting, and the like, simplifies the one-way valve structure of the air pump and is suitable for modern manufacturing.

A long-distance power transmission system capable of preventing self losses comprises a power transmission line, a voltmeter, a single-chip microcomputer and a voltage compensation unit. The voltmeteris connected to the output end of the power transmission line, and the output end of the voltmeter is connected with the input end of the single-chip microcomputer; the single-chip microcomputer comprises an output port N1, the N1 is connected with the input end of the voltage compensation unit, and the output end of the voltage compensation unit is connected with the power transmission line. Theoutput voltage on the power transmission line is measured through the voltmeter, voltage data is output to the single-chip microcomputer, the voltage losses are obtained through analysis of the single-chip microcomputer, the single-chip microcomputer directly outputs a control signal from the N1, the control signal controls the compensation unit to compensate the voltage, and the problems that the self losses are generated in the power transmission process due to long-distance power transmission, and the output voltage becomes small and unstable due to the self losses are solved.

The invention discloses a method for assembling axial thermal protection components on an aircraft. The method comprises the following steps that a face cabin body profile face is swept before the thermal protection components are mounted, the assembling order and relationship of the thermal protection components are determined, the aircraft is assembled on an overturning tool, a limiting block isdesigned according to the theoretical gap between the two adjacent thermal protection components, and the thermal protection components are mounted sequentially according to the assembling order. Themethod for assembling the axial thermal protection components on the aircraft realizes the accurate positioning and bonding links of the thermal protection components, achieving of the precise assembling method of a thermal protection structure is ensured, precision of the protection position is achieved, validating is conducted through a process scheme, and the operability is high.

An anti-collision suspended polishing device comprises a machine base, a suspended basic disc, a grinding disc and a correction ring. The suspended basic disc is connected with a pressurizing assembly, the suspended basic disc is clamped in the corrosion ring which is installed on the grinding disc, the grinding disc rotates around a fixed center axis through a main driver, wedge-shaped grooves and positioning work positions for placing workpiece to be processed are formed in corresponding surfaces of the suspended basic disc and the grinding disc along the circumferential direction, polishing liquid is full of the wedge-shaped grooves, and the wedge-shaped grooves and the processing work positions are arranged at intervals. The polishing device further comprises a first permanent magnet ring and a second permanent magnet ring, the first permanent magnet ring is sleeved on the outer side of the suspended basic disc, the second permanent magnet ring is sleeved on the inner surface of the connection ring, a gap is reserved between the first permanent magnet ring and the second permanent ring, and the magnetism of an outer ring of the first permanent magnet ring is the same as that of an inner ring of the second permanent magnet ring. The anti-collision polishing device is stable to grind, small in surface damage and high in quality.

The invention discloses a pressure making system, which comprises a piston cylinder (11) and a piston (10) for making pressure, the piston (10) is connected with a lead screw (7), and the lead screw is connected with an axially fixed The screw sleeve (6); the screw sleeve is connected with the first servo motor (1) that drives the screw sleeve to rotate through a clutch (4); the pressure output end of the piston cylinder is connected in parallel with the connection table seat (27) of the pressure gauge (28) ), and pressure relief valve (24); the pressure chamber at the rear of the piston cylinder pressure output end is connected to the output end of a booster valve (23), and the oil supply end of the booster valve is connected to the oil outlet of the pre-pressure pump (20) The oil inlet of the preload pump is connected to the oil cup (25); the pumping actuator of the preload pump, the opening and closing action mechanism of the pressure relief valve, and the switching action mechanism of the booster valve are respectively connected to the power output through the clutch part. The invention has the characteristics of simple operation, convenient use and high efficiency, and can be used in conjunction with a weight loading system to realize a fully automatic piston pressure measuring robot and solve the problems existing in the current piston pressure gauge.

A floating disc suspension polishing device comprises a polishing base disc and a floating disc, wherein wedge grooves and processing stations for placing workpieces to be processed are formed and arranged on the surface, opposite to the floating disc, of the polishing base disc in the circumferential direction; the wedge grooves are filled with polishing solutions; the wedge grooves and the processing stations are arranged at intervals; the polishing device further comprises a spring, a force sensor, a lifting platform and a master driver; the polishing base disc and the master driver are connected and can rotate around a spindle; the polishing base disc is positioned on the floating disc; the floating disc is connected with the upper end of the spring; the lower end of the spring is connected with the force sensor; and the force sensor is fixedly connected with the lifting platform. The floating disc suspension polishing device presses precisely, grinds stably, and is small in surface damage and high in quality.

The invention provides a crimping structure with the series connection of thyristors of multiple stages. An external frame of the crimping structure is formed by two insulating pull rings and a left yoke and a right yoke connected to the two insulating pull rings. A silicon stack unit is formed by the series connection of multiple heat radiators and multiple thyristors alternately. The silicon stack unit is installed between the left yoke and the right yoke through a pressure unit arranged at one end. The insulating pull rings can provide pressing force with a larger range than that of an existing tensioning device, the good contact between the thyristors and the heat radiators is ensured, thus the thyristors get good heat dissipation effect and through-flow effect, the press mounting requirements of thyristors with larger sizes and more stages can be satisfied. The crimping structure of the present invention has the advantages of compactness, a small number of components, simple assembly and convenient maintenance.

A lap equal-length gradually increasing pressure mechanism and its control device, including a detection disc, an electromagnetic damper, a pulse counting sensor, and a control device, the detection disc is installed on the front lap roller or the rear lap roller, the electromagnetic damper, pulse counting The counting sensors are electrically connected with the control device. The pulse counting sensor collects the cotton layer rolling signal through the detection disc, and inputs it into the digital / electrical signal conversion processor to generate a current signal. The current signal is amplified by the current amplifier and then sent to the electromagnetic damper. The electromagnetic damper generates a corresponding damping torque; since the present invention is based on the mathematical model of increasing pressure per unit winding length, every time the detection disc rotates through a certain angle, the counting sensor can promptly notify the control device to increase the input of the electromagnetic damper Electric current, the electromagnetic damper generates corresponding damping torque, which makes the cotton layer pressurized more accurately and more reasonably, and its value accuracy is more accurate than that of the prior art.

The invention provides an intragastric calculus compression bag, and belongs to the technical field of medical equipment. The intragastric calculus compression bag comprises a compression bag body, pressurization bags, pressurization tubes, pressurization valves and a traction strap. The compression bag body is made of a paper-thin flexible cloth material, after the compression bag body is compressed, the size of the compression bag body is decreased, the compression bag body is soft, and when the compression bag body is put into the stomach, operation is convenient; the compression bag body is large in size and capable of containing larger calculi after being unfolded. The compression bag body is of a two-layer structure, an enclosed cavity is formed, and objects contained in the pressurization bags can be deformed after pressurization is conducted. An inner crinkle cloth layer protrudes inwards after pressurization, so that the calculi form cylinders with the diameter of nearly 1 cm and can be smoothly taken out through the esophagus. All enclosed units are pressurization units and are coated with different colors, and therefore pressurization parts can be determined for accurate pressurization. The portions, outside the pressurization bags, of the pressurization tubes are connected into a whole from an opening of the compression bag body, parallelly arranged to the position 60 cm away from the opening of the compression bag body and shaped like a strap and can be attached to a gastroscope body, the occupied volume is the minimum through the mouth pharynx and the esophagus, and mucosal tissue damage can be avoided. By means of the traction strap, the calculi can be taken out more conveniently and rapidly.

An anti-collision suspended polishing device comprises a machine base, a suspended basic disc, a grinding disc and a correction ring. The suspended basic disc is connected with a pressurizing assembly, the suspended basic disc is clamped in the corrosion ring which is installed on the grinding disc, the grinding disc rotates around a fixed center axis through a main driver, wedge-shaped grooves and positioning work positions for placing workpiece to be processed are formed in corresponding surfaces of the suspended basic disc and the grinding disc along the circumferential direction, polishing liquid is full of the wedge-shaped grooves, and the wedge-shaped grooves and the processing work positions are arranged at intervals. The polishing device further comprises a first permanent magnet ring and a second permanent magnet ring, the first permanent magnet ring is sleeved on the outer side of the suspended basic disc, the second permanent magnet ring is sleeved on the inner surface of the connection ring, a gap is reserved between the first permanent magnet ring and the second permanent ring, and the magnetism of an outer ring of the first permanent magnet ring is the same as that of an inner ring of the second permanent magnet ring. The anti-collision polishing device is stable to grind, small in surface damage and high in quality.

The invention discloses a novel balloon dilatation pressure device capable of being operated by one hand. The device comprises a pushrod, a handheld control assembly, a drum, a pressure gauge, a high pressure extension tube and a rotary joint, wherein the pressure gauge is arranged at the outlet of the drum, one end of the high pressure extension tube is fixedly connected with the drum, and the other end of the high pressure extension tube is fixedly connected with the rotary joint; and the pushrod penetrates through the handheld control assembly and stretches into the drum, the inside of the drum is closely matched with the front end of the pushrod, and the drum is fixedly connected with the handheld control assembly. Through the mode, one-handed operation can be achieved, and rapid pressurization, precise pressurization and rapid pressure release can be achieved respectively through control of positions of a control module.