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48results about How to "Cause disturbance" patented technology

Temperature-controllable portable multifunctional pressure chamber

The invention relates to a temperature-controllable portable multifunctional pressure chamber, which is characterized in that a confining pressure chamber is connected with the oil source of an external confining pressure loading device by a confining-pressure oil inlet; an axial pressure chamber is connected with the oil source of an external axial pressure loading device by an axial pressure oil inlet; an axial pressure piston is arranged in the axial pressure chamber, and enters the confining pressure chamber after passing through the head cover of the confining pressure chamber; a sample cylinder is composed of a side wall, a base and an upper pressing board, wherein the base is provided with a porous disc, and samples are placed on the porous disc and then covered by a head cover; a spiral refrigerating-fluid circulating pipe winding the cavity of the confining pressure chamber and the base and the upper cover of the sample cylinder are internally carved twin-spiral refrigerating-fluid circulating slots respectively, and connected with an external refrigerating plant; temperature sensors arranged in the confining pressure chamber and on the base and the upper cover of the sample cylinder are respectively connected with an external temperature controller; the external temperature controller is connected with the external refrigerating plant, and the porous disc is connected with a water replenishing or drainage connector. The temperature-controllable portable multifunctional pressure chamber of the invention has the characteristics of accurate and independent multi-point temperature control and multifunction and is easy to carry, can be used with freeze thawing cycling testers, triaxial testers and CT scanners, and does not need to be performed installation and sample taking for many times and cause disturbances on samples, thereby simplifying the test process.
Owner:COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE

Jiggling phase searching method for three-phase AC servo motor

The invention relates to a jiggling phase searching method, wherein a phase searching current is applied to the winding of the three-phase AC servo motor, and an electric angle alpha of the rotor magnetic pole relative to the stator is determined through measuring jiggling of the motor, which includes steps: 1. defining and initializing the phase searching parameters; 2. applying a gradually increased phase searching current corresponding to the assumed value of the electric angle alpha[0] so as to generate jiggling of the rotor, then turning to the step 5 if the phase searching current reaches a maximum value I[max] and the movement of the rotor still does not exceed a permitted deviation angle delta; 3. determining an angle modification value theta; 4. modifying the assumed value of the electric angle alpha[0] based on jiggling direction of the servo motor and the angle modification value theta, then returning to the step 2; 5. using the assumed value of the electric angle alpha' as the actual value of the electric angle alpha; and optionally 6. determining and correcting the phase sequence of the three-phase winding wiring of the motor, wherein the angle modification value can be determined by subsequently using a bisection method and a bias weighted stepping method. Comparing with methods in prior art, the method has features of small stroke, fast phase searching speed, high phase searching precision, and wide range of compatibility because it is applicable not only to the rotation motors, but also to the linear motors.
Owner:河北海纳电测仪器股份有限公司

Feeding and chicken catching equipment for free-ranging chickens and method thereof

InactiveCN109964848AReasonable structureGood effect on catching chickensBird housingsEngineeringFree range
The invention relates to the field of chicken breeding equipment, in particular to feeding and chicken catching equipment for free-ranging chickens and a method thereof. The equipment comprises a chicken house, a passage, a chicken catching device, a conveying device and a boxing device, wherein the passage runs through the chicken house, the chicken house is opposite to the chicken catching device through the passage, the chicken catching device is opposite to the conveying device, and the conveying device is opposite to the boxing device. The using method of the equipment comprises the stepsof driving, chicken catching, conveying and the like. The equipment is reasonable in structure, after the chickens are fed and grow to a certain period, the chickens can be driven into the chicken catching device from the chicken house to be caught, and the chicken catching effect is good; when the free-ranging chickens in the chicken house need to be caught, the chickens are driven to the passage from the chicken house, and enter the chicken catching device through the passage, the chicken catching device transfers the free-ranging chickens to the conveying device, and then the chickens areput in the boxing device through the conveying device. The using method of the equipment is simple and effective, and no large disturbance is brought to the chickens in the process of driving the chickens.
Owner:江门市润然生态农业发展有限公司

High-survival-rate soft-shelled turtle breeding method

The invention discloses a high-survival-rate soft-shelled turtle breeding method. The high-survival-rate soft-shelled turtle breeding method comprises the steps that 1, a soft-shelled turtle breeding pond is built, a terrace is built in the soft-shelled turtle breeding pond and comprises a wedge-shaped structure, multiple round holes are formed in a top plate and covered with a rubber film, and a water permeating hole is formed in the middle position of the rubber film; a round opening is also formed in the top plate, a non-woven fabric covers the round opening and forms a bag, and the bag is filled with sand; a handing ring is arranged on the lower edge of the top plate, multiple underwater plates are provided, a hook is formed at the upper end of each underwater plate, a handing ring is formed at the lower end of each plate, the next underwater plate in the multiple underwater plates is hung on the hanging ring of the previous underwater plate through the hook, and the underwater plates are arc-shaped plates; 2, water is stored in the soft-shelled turtle breeding pond; 3, young soft-shelled turtles are stocked in the soft-shelled turtle breeding pond for breeding. The high-survival-rate soft-shelled turtle breeding method ensures that the surface of the terrace is wet and is not dry, the basking comfort degree of soft-shelled turtles on the terrace is improved, manual terrace watering is also not needed, and the soft-shelled turtles are not alarmed.
Owner:黄世强

Efficient sedimentation tank

ActiveCN112426754ANo reverse precipitationEfficient and high qualityHollow article cleaningSettling tanks feed/dischargeSludgeSewage
The invention discloses an efficient sedimentation tank, which comprises a sedimentation tank body, a funnel-shaped sedimentation tank is arranged at the bottom of the sedimentation tank body, a mud suction pipe is further installed at the bottom of the sedimentation tank body, and a mud suction pump is installed on the mud suction pipe; a plurality of horizontal pipes which are uniformly distributed are also arranged in the sedimentation tank; wherein the horizontal pipe is of a solid structure and is arranged above the sedimentation tank, the horizontal pipe is of a square pipe body structure, the horizontal pipe is arranged to rotate by 45 degrees, four corner points of the horizontal pipe are located at the upper, lower, left and right positions respectively, and the horizontal pipe isarranged to be arranged in an up-down staggered array mode. When the device is used for settling, sludge at the upper part naturally settles into the settling tank at the lower part from the sludge discharge slideway, so that the settled sludge cannot generate a reverse settling phenomenon under the blocking of the horizontal pipes arranged at the upper part in the process of refilling sewage orpumping away the sludge at the bottom, and the settling work can be efficiently finished with high quality.
Owner:UNIVERSAL ENVIROMENTAL PROTECTION EQUIP YIXING CITY

Temperature-controllable portable multifunctional pressure chamber

The invention relates to a temperature-controllable portable multifunctional pressure chamber, which is characterized in that a confining pressure chamber is connected with the oil source of an external confining pressure loading device by a confining-pressure oil inlet; an axial pressure chamber is connected with the oil source of an external axial pressure loading device by an axial pressure oil inlet; an axial pressure piston is arranged in the axial pressure chamber, and enters the confining pressure chamber after passing through the head cover of the confining pressure chamber; a sample cylinder is composed of a side wall, a base and an upper pressing board, wherein the base is provided with a porous disc, and samples are placed on the porous disc and then covered by a head cover; a spiral refrigerating-fluid circulating pipe winding the cavity of the confining pressure chamber and the base and the upper cover of the sample cylinder are internally carved twin-spiral refrigerating-fluid circulating slots respectively, and connected with an external refrigerating plant; temperature sensors arranged in the confining pressure chamber and on the base and the upper cover of the sample cylinder are respectively connected with an external temperature controller; the external temperature controller is connected with the external refrigerating plant, and the porous disc is connected with a water replenishing or drainage connector. The temperature-controllable portable multifunctional pressure chamber of the invention has the characteristics of accurate and independent multi-point temperature control and multifunction and is easy to carry, can be used with freeze thawing cycling testers, triaxial testers and CT scanners, and does not need to be performed installation and sample taking for many times and cause disturbances on samples, thereby simplifying the test process.
Owner:COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE

Cashbox anti-jamming circuit and circuit anti-jamming method

The invention discloses a cashbox anti-jamming circuit and a circuit anti-jamming method. The cashbox anti-jamming circuit comprises a 12V power supply, a cashbox coil, an audion, a grounded terminal, a resistor, a free-wheeling diode and a TVS diode; the 12V power supply can generate a power supply signal when a cashbox needs to be opened, the cashbox coil generates charges opposite to those of an electromagnet for closing the cashbox to a central electromagnet when the cashbox is opened, the audion controls the on-off state of a circuit when the cashbox control signal terminal is in a high-level or low-level state, the grounded terminal forms a closed loop for the circuit, the resistor enables the cashbox to keep a closed state when the cashbox does not receive a power supply switch-on signal, the free-wheeling diode controls the instantaneous voltage of the cashbox coil (4) to be quickly reduced to be lower than 30 V from higher than 100 V, and the TVS diode reduces the voltage of the cashbox coil to be lower than 15 V after the free-wheeling diode controls the instantaneous voltage of the cashbox coil to be quickly reduced to be lower than 30 V from higher than 100 V. Accordingly, the instantaneous peak voltage of the cashbox anti-jamming circuit can be further reduced to better protect a sensitive display to normally work.
Owner:佛山市诺百利科技有限公司

Soil-rock geological foundation pit forming construction method

The invention discloses a soil-rock geological foundation pit forming construction method. The method comprises the steps that S1, the position of a foundation pit on the original ground is slightly leveled, and a steel plate mold is placed on the ground; S2, a breaking hammer is vertically inserted into the ground through an opening of the steel plate mold, holes are dug through the breaking hammer till the depth of the holes meets the design requirement, and the breaking hammer is pulled out; S3, hole plugging molds are inserted into the pit holes dug by the breaking hammer; S4, the breaking hammer is vertically inserted and pulled out according to the number, the hole plugging mold is inserted, and the operation is repeated until the hole plugging mold is inserted into the last hole; S5, all the hole plugging molds are pulled out, and the steel plate mold is taken away; and S6, the holes in the foundation pit are connected, and a protective fence stand column foundation pit is formed. The construction progress is accelerated: compared with traditional foundation pit excavation, the method has the advantages that extrusion hole forming of existing equipment, namely the breaking hammer is rapid and does not waste resources. And meanwhile, the construction quality is guaranteed: the foundation pit quality is guaranteed, surrounding rock and soil cannot be disturbed, and the disturbance of the bottom of the foundation pit is guaranteed.
Owner:CCCC TUNNEL ENG +1

Soft-shelled turtle aquaculture method

The invention discloses a soft-shelled turtle aquaculture method which comprises the following steps: I, building a flat roof in a soft-shelled turtle aquaculture pond, wherein the flat roof comprises a wedge-shaped structure consisting of a tilted top plate, a horizontal base plate and three vertically arranged side plates, a hollow cavity is formed inside the flat roof, a water feeding opening, which is 0.3 to 0.5 cm in thickness, is formed in the top plate, multiple circular holes are formed in the top plate, a rubber film covers the circular holes, and a water permeation hole with the aperture of 0.01 to 0.03 cm is formed in the middle position of the rubber film; II, accumulating water in the soft-shelled turtle aquaculture pond, connecting the lower edge of the top plate to the water surface in the soft-shelled turtle aquaculture pond, and accumulating water into the flat roof through the water feeding opening till the flat roof is filled; III, placing soft-shelled turtle seeds into the soft-shelled turtle aquaculture pond for aquaculture. The soft-shelled turtle aquaculture method disclosed by the invention ensures that the surface of the flat roof is wet and not dried, so that the comfortableness of a soft-shelled turtle lying on the flat roof and enjoying the sunshine on the back is improved; however, manual water sprinkling into the flat roof is not needed, so that disturbance to the soft-shelled turtle is avoided.
Owner:黄世强
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