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165results about How to "Moderate pressure" patented technology

Method for continuously preparing regenerated cellulose fibre

The invention discloses a method for continuously preparing regenerated cellulose fibers through the solvent method, comprising the following steps that: a cellulose raw material is dissolved into an ion liquid to prepare a spinning liquid; gel type regenerated cellulose fibers are obtained through spinning; and the regenerated cellulose fibers are obtained through cleaning, rear draft and drying, wherein, the ion liquid is selected from one or a plurality among the following ion liquids: a). an ion liquid with 1, 3-dialkyl imidazole as a cation and formiate radical, radical vinegar or propionate radical as an anion; and b). an ion liquid with 1-R1-3-R2- dialkyl imidazole as the cation and chlorine, bromine, iodine, formiate radical, radical vinegar, sulfate radical, nitrate radical, tetrafluoroborate radical, thiocyanate radical, hexafluorophosphate radical, p-toluenesulfonate radical or trifluoromethanesulfonic acid radical as the anion. The method has the advantages of wide technological range, mild temperature condition, adequate pressure, quick spinning speed and so on, can prepare the regenerated cellulose fibers with superior performance and complete specifications, and has low production cost, high production efficiency and wide application prospect.
Owner:INST OF CHEM CHINESE ACAD OF SCI +1

Epicyclic Gear System Having Two Arrays Of Pinions Mounted On Flexpins With Compensation For Carrier Distortion

An epicyclic gear system (A) includes sun and ring gears (2, 4) and planet pinions (6, 8) arranged in two side-by-side arrays (a, b) between the sun and ring gears, there also being a carrier (10, 50) to which planet pinions are coupled through flexpins (30). The carrier has primary and secondary walls (20, 22) between which the pinions are located and webs (24) connecting the walls. The flexpins for one array of pinions are cantilevered from the primary wall and the flexpins for the other array of pinions are cantilevered from the secondary wall. When the gear system operates, the carrier along its primary wall is subjected to an externally applied torque which transfers through the system at the planet pinions of the two arrays. The load path (pa) for the pinions at the primary wall is shorter than the load path (pb) for the pinions at the secondary wall, and this disparity causes the carrier to distort. To compensate for this distortion so that the pinions of the two arrays will mesh more evenly with the sun and ring gears, the flexpins of the first array are offset angularly with respect to the flexpins of the second array, or the teeth of the pinions in the first array are narrower than the teeth of the pinions of the second array, or the primary wall of the carrier has areas (40, 44) of weakness where the flexpins of the first array are cantilevered from it, or the flexpins of the first array are more flexible than the flexpins of the second array. As a consequence, the pinions of the two arrays mesh better under load with the sun and ring gears and share the transfer of torque more evenly.
Owner:THE TIMKEN CO

Bored pile control method, control system and drill using the control system

The invention discloses a control method for drilling and pile formation, which is used for a CFG construction method. The control method comprises a drilling process and a drill lifting and pouring process, wherein the drilling process comprises the following steps of acquiring a current drilling depth of a drill rod in real time; judging whether the current drilling depth of the drill rod is more than or equal to a preset drilling depth and sending out a drilling-stopping control signal if yes so as to control a drilling machine actuator to stop working; and the drill lifting and pouring process comprises the following steps of acquiring the main hoisting tension of a drilling machine in real time; acquiring the pressure of slurry on the bottom of the drill rod according to the main hoisting tension; comparing the pressure of the slurry on the bottom of the drill rod with the target pressure of the slurry on the bottom of the drill rod so as to acquire the pressure deviation of the slurry on the bottom of the drill rod; and taking the pressure deviation of the slurry on the bottom of the drill rod as a control object so as to control the drilling machine actuator to lift the drill rod at corresponding speed. By efficiently controlling the drilling and back lift of the drill rod, the method can reduce the number of constructors, lower labor intensity as well as construction cost and improve construction efficiency and pile formation quality. The invention simultaneously discloses a control system for drilling and pile formation, as well as a drilling machine using the control system.
Owner:BEIJING SANY HEAVY MASCH CO LTD

Multifunctional ultrasonic phased array pipeline circumferential weld detection equipment

The invention provides multifunctional ultrasonic phased array pipeline circumferential weld detection equipment which comprises a main body, a magnetic pressure wheel mechanism, an auxiliary support, a fastening device, a left flaw detection probe bracket, a right flaw detection probe bracket, a left flaw detection probe and a right flaw detection probe, wherein the main body comprises a base, a first slide bar, a second slide bar, a slide bar jackscrew, a left slide bar connecting rack, a right slide bar connecting rack, magnetic wheels and an axle; the fastening device is used for fastening the main body on a pipeline to-be-detected; the magnetic pressure wheel mechanism is arranged between the first slide bar and the second slide bar; the auxiliary support is connected with the first slide bar and the second slide bar of the main body; the flaw detection probe brackets are connected with the flaw detection probes and help the flaw detection probes to detect a weld joint of the pipeline to be detected. The equipment can rotate around the flaw detection pipeline smoothly during pipeline circumferential weld detection, thereby preventing impact of accidental conditions such as vibration on the detection effect, enlarging the application range of the equipment, and improving the flaw detection sensitivity and the detection efficiency.
Owner:中国石油天然气第一建设有限公司

Ultrasonic automatic scanning device and imaging method thereof

Provided are an ultrasonic automatic scanning device and an imaging method thereof. The device comprises a housing, a drive, a transverse guide, a transverse slider, a transverse encoder, a longitudinal guide, a longitudinal slider, a longitudinal encoder, a pressure sensor and a spring. The transverse slider is mounted on the transverse guide; the longitudinal guide is mounted on the transverse slider; the longitudinal slider is mounted on the longitudinal guider; the pressure sensor is mounted on the top of the longitudinal guide; the spring is set between the longitudinal slider and pressure sensor; and an ultrasonic probe is mounted on the outer side of the longitudinal slider. Automatic scanning has the advantages of being subject to feedback the pressure of a ultrasonic probe, maintaining a moderate pressure and improving the accuracy of the diagnosis through the pressure sensor; performing pressure to the ultrasonic probe through the spring, having an adaptive function of compression, and being applied to scan the flat or concave-convex parts of the human body. A data reconstruction and a three-dimensional ultrasound volume imaging are performed based on ultrasonic scanning line data and moving trajectory, which solves the difficult problem of three-dimensional ultrasonic volume imaging of handheld ultrasound scanning device.
Owner:SHANTOU INST OF UITRASONIC INSTR CO LTD

Clinical compression rapid hemostasis device for cardiology

The invention discloses a clinical compression rapid hemostasis device for cardiology, and relates to the technical field of cardiology. The invention aims to solve a problem that in prior cardiologymedical treatment, hemostasis nursing needs to be carried out by manual pressing of medical personnel, and the manual pressing can cause wrist fatigue, so that pressing force is difficult to control and the pressing effect is influenced. The invention provides the following scheme that the device comprises a bottom plate; the top of the bottom plate is fixedly connected with a driving motor; an output shaft of the driving motor is fixedly sleeved by a first gear; the top of the bottom plate is provided with a chute along the length direction of the bottom plate; a sliding block is slidably arranged in the chute; a rack is welded on the top of the sliding block and is meshed with the first gear for transmission; fixed plates welded with the bottom plate are respectively arranged on two sides of the rack; and two clamping plates are rotatably connected to one sides, close to each other, of the two fixed plates. According to the invention, the angle is conveniently adjusted for pressing,so that applicability of the device is improved; and buffering automatic pressing is improved, proper pressing force is ensured, and the device saves labor and is convenient.
Owner:费超

Ampoule clamping device of impurity detection device for bottle-contained liquid

The invention relates to an ampoule clamping device used for a bottled liquid impurity detection device, which solves the technical problem in the prior art that the bottle clamping device is easy to generate the foams during the rotation process of the ampoule, thus affecting the detection quality; the ampoule clamping device comprises an upper guide cylinder part, a lower guide cylinder part and a rotation cylinder part which are sequentially arranged from top to bottom; the upper guide cylinder part comprises an upper guide cylinder, an upper sliding rod and an upper idler wheel; the upper end and the lower end of the upper guide cylinder are provided with an upper guide sleeve and a lower guide sleeve; the side wall of the upper guide cylinder is provided with an upper idler wheel channel; the lower guide cylinder part comprises a lower guide cylinder, a sliding sleeve, a lower idler wheel, a lower sliding rod and an ejector block; the upper end of the lower guide cylinder is fixedly connected with the upper sliding rod and the lower end thereof is provided with a bearing; the side wall of the lower guide cylinder is provided with a lower idler wheel channel and a lower idler wheel shaft; the rotation cylinder part comprises a rotation cylinder and a clamping head; the rotation cylinder is connected with the lower guide cylinder by the bearing and can rotate around the lower guide cylinder; and the clamping head is arranged at the lower end of the rotation cylinder. The ampoule clamping device has the advantages of high detection quality, safety and reliability.
Owner:XIAN YIDA INFORMATION SYST

Method for preparing glossy ganoderma spore oil

The invention discloses a preparation method for ganoderma spores oil, which belongs to the technical field of bio-engineering. The preparation method for the ganoderma spores oil comprises the steps as follows: log ganoderma spores powder with wall-broken by water-washing is selected as raw material and wetted by solvent to prepare the grains; at the temperature of 30-55 DEG C, the grains are dried to a state that the water content is less than 3%; the grains are put in a supercritical CO2 extraction kettle and extracted by supercritical CO2, with the extraction pressure of 28-35MPa, the temperature of 42-48 DEG C, the flow rate of CO2 of 20-30L / H and the extracting time of 2 hours; subsequently, the two-stage separation is carried out, with the separation pressure of 8-10MPa and the separation temperature of 53-57 DEG C for the first-stage separation and the separation pressure of 3-5Mpa and the separation temperature of 30-40 DEG C for the second-stage separation; the mixture which is separated by two stages is put statically under normal temperature for 10-20 days; subsequently, supernatant is taken for filtering so as to obtain buff oily matter; the buff oily matter is further separated and purified so as to obtain the product. The preparation method for the ganoderma spores oil provided by the invention has the advantages of short extracting time, high yield, high content of effective composition, suitable pressure, mild operation condition and easy industrialized production.
Owner:SHENZHEN KANGDAO BIOLOGY CO LTD

Adjustable phased array pipeline girth weld detection device

The invention provides an adjustable phased array pipeline girth weld detection device which comprises a body, a magnetic pressing wheel mechanism, an auxiliary bracket, a tightening device, a left flaw detection probe bracket, a right flaw detection probe bracket, a left flaw detection probe and a right flaw detection probe; the body comprises a foundation support, a first sliding rod, a second sliding rod, a sliding rod jackscrew, a left sliding rod linkage frame, a right sliding rod linkage frame, magnetic wheels and wheel shafts; the tightening device is used for tightening the body onto a pipeline to be detected, the magnetic pressing wheel mechanism is arranged between the first sliding rod and the second sliding rod, the auxiliary bracket is connected with the first sliding rod and the second sliding rod of the body, and the flaw detection probe brackets are connected with the flaw detection probes and assist the flaw detection probes in conducting detection on the girth weld of the pipeline to be detected. When the device is used for detecting the pipeline girth weld, the device can rotate steadily around the flaw detection pipeline, therefore the situation that the detection result is affected by vibration and other accidents is prevented, and the device can have the advantages of being wide in applicable range, high in flaw detection sensitivity, high in detection efficiency and the like.
Owner:中国石油天然气第一建设有限公司
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