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43results about How to "Avoid the influence of external factors" patented technology

Fracturing pressure determining device and method for carbon dioxide fracturing device

The invention discloses a fracturing pressure determining device and method for a carbon dioxide fracturing device. The device comprises an energy leaking cover, a pressure sensor and a signal collecting unit, the energy leaking cover is of a barrel-shaped structure with openings in two ends, the energy leaking cover is installed on an energy leaking head of the fracturing device through an open cover at one end in an opposite-fixation mode, and the pressure sensor is attached to the inner wall of the energy leaking cover and is in signal connection with the signal collecting unit. Through the pressure sensor, during high-speed gasification of liquefied carbon dioxide, a fracturing pressure signal of the fracturing device is measured and transmitted to the signal collecting unit. The fracturing pressure determining device is mainly used for accurately measuring the fracturing pressure of the carbon dioxide fracturing device. The device carries out an experiment conveniently, is easy to operate and accurate and reliable in measurement result, provides possibility for accurate calibration of the liquefied carbon dioxide, and not only can provide reliable data for designing and producing of fracturing devices of different dimensions, but also can analyze and research the change relation between fracturing pressure and distance, so that the utilization rate of energy is increased.
Owner:CENT SOUTH UNIV

Chemical synthesis method for environment-friendly inorganic lead-free halide perovskite thin film

The invention discloses a chemical synthesis method for an environment-friendly inorganic lead-free halide perovskite thin film. The chemical synthesis method comprises the steps of (1) dissolving SnX<2> into an organic solvent, and performing magnetic stirring until the SnX<2> is fully dissolved; (2) adding CsX and stirring in a light-shading condition to obtain a CsSnX<3>/Cs<2>SnX<6> inorganic lead-free halide perovskite precursor solution; (3) performing ultrasonic cleaning on a substrate material, and drying by nitrogen; (4) putting the substrate material into an ultraviolet ozone cleaner to be subjected to radiation treatment; (5) paving the CsSnX<3>/Cs<2>SnX<6> inorganic lead-free halide perovskite precursor solution on the bottom surface of the substrate material, and performing spin coating; and (6) heating the material and performing thermal insulation for a certain time, and cooling to room temperature to obtain the CsSnX<3>/Cs<2>SnX<6> inorganic lead-free halide perovskite thin film. The CsSnX<3>/Cs<2>SnX<6> inorganic lead-free halide perovskite thin film prepared by the chemical synthesis method is high in stability, low in cost, low in equipment requirement, green, environment-friendly and pollution-free, and suitable for large-scale industrial production.
Owner:MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS

Nano silver high-efficiency antibacterial composition used for gynecologic inflammation and preparation method thereof

The invention discloses a nano silver high-efficiency antibacterial composition used for gynecologic inflammation and a preparation method thereof. The acting component in the formation of the nano silver high-efficiency antibacterial composition is nano silver, and the composition comprises two parts which are respectively a nano silver vaginal effervescent tablet and a slow-release tablet. The invention is suitable for female vaginal application and combined use. When in use, the effervescent tablet is firstly dissolved into water, an affected part is washed, then the slow-release tablet is put into the mixture, the principle of the release of a medicine can be fully utilized, and the sufficient and uniform medicine concentration is ensured, thereby killing pathogenic bacteria quickly and thoroughly and achieving the aim of cure. The combination has convenient use, is also convenient to carry, is easily accepted by a patient and is suitable for clinical popularization and use. The invention also discloses the preparation method. The invention has stable quality of a product, simple preparation process, controllable quality and lower cost, can adapt to industrialized large-scale production, ensures the quality of the product and can also lower the application burden of illness greatly. The composition prepared by the invention is mainly applied to vaginitis, urethritis, pelvic inflammation, cervicitis and the like in the gynecologic inflammation, and the cure rate can reach 90.3 percent.
Owner:王明霞 +1

Testing equipment and testing method for mobile phone circuit chip

The invention belongs to the technical field of chip detection, and particularly relates to mobile phone circuit chip testing equipment, which comprises a fixing plate, wherein a first air cylinder is fixedly connected to the center of the bottom end of a bracket, the output end of the first air cylinder is fixedly connected with an upper detection seat, a lower detection seat is fixedly connected to the position, opposite to the upper detection seat, of the fixing plate, a placement groove is formed in the top end of the lower detection seat, and a first cavity is formed in the lower detection seat. According to the testing method of the mobile phone circuit chip, the chip is placed in a testing placement groove to be detected; when the mobile phone circuit chip is tested through the testing method, the testing position of the mobile phone circuit chip is adjusted through a position adjusting plate, so that the measuring accuracy is guaranteed; and through folding of the upper detection seat and the lower detection seat, the mobile phone circuit chip is ensured to be in a dust-free detection state, so that the problem that when the chip is placed in a detection machine, the contact between the chip and a probe is not tight enough, poor contact easily occurs, and a detection result is wrong is solved.
Owner:深圳市磐锋精密技术有限公司

Ear back contact type thermodetector

InactiveCN102525430AAvoid situations where it's still onEffective protectionDiagnostic recording/measuringSensorsContact typeEngineering
The invention provides an ear back contact type thermodetector which comprises a probe for detecting temperature, a protection casing, a spring, an elastic switch for controlling the on/ off of the ear back contact type thermodetector and a shell, wherein the protection casing is shaped like a tube with two open ends, the tubular cavity of the protection casing is used for accommodating the probe, one end of the elastic switch is connected with the probe, the other end of the elastic switch is fixed on the shell, one end of the spring is connected with the protection casing and the other end of the spring is connected with the shell. The ear back contact type thermodetector has the beneficial effects that the telescopic protection casing is arranged for effectively protecting the probe and preventing influence from external factors to increase detection accuracy; since the elastic switch for controlling the on/ off of the ear back contact type thermodetector is arranged at the tail part of the probe, the situation that the ear back contact type thermodetector is in an ON state when not used for detecting temperature is avoided; and when the probe jiggles and touches the elastic switch, the ear back contact type thermodetector begins to detect temperature, which accords with human engineering.
Owner:SHENZHEN H&T INTELLIGENT CONTROL

Method for rapid propagation and detoxifying of stem tips of fragrant pomelo

The invention relates to the technical field of detoxification and propagation of fruit trees, and in particular relates to a method for rapid propagation and detoxifying of stem tips of fragrant pomelo, and the method comprises the following steps: (1) selection and disinfection of explants, to be more specific, taking a fragrant pomelo tuber in spring or autumn for indoor germination, spraying regularly a bactericide after buds grow up, two weeks later, taking the buds again, after heat treatment in a 5% sodium hypochlorite solution of the buds for 8-10 minutes at 35-40 DEG C, putting the buds on a super clean bench under an anatomical lens for stem tip exfoliation under 8-40 times, and selecting the stem tip or a nucellar tissue of an apical bud for standby use; and (2) primary culture,to be more specific, putting the selected stem tip or the nucellar tissue once again in the 5% sodium hypochlorite solution for treating for 3-5min, and putting the stem tip or the nucellar tissue into a primary medium for rapid propagation and growth. The method for rapid propagation and detoxifying of the stem tips of the fragrant pomelo is established by selection of mediums and hormones in each stage of sterilization and tissue culture of the external explants, provides a theoretical basis and a technical support for factory production of fragrant pomelo tissue culture seedlings, and provides a new way for selection and breeding of new varieties.
Owner:HUNAN UNIV OF SCI & ENG

Preparation method of soft package battery

The invention provides a preparation method of a soft package battery. The method comprises the following steps that a laminated or wound battery cell is placed in an inner cavity of a clamp, the clamp clamps and heats the battery cell, and the inner cavity of the clamp is vacuumized at the same time; after baking is completed, the clamp is opened to inject liquid into the battery cell, after liquid injection is completed, the clamp clamps the battery cell slightly and heats the battery cell, and meanwhile, the inner cavity of the clamp is vacuumized repeatedly to infiltrate the battery cell;after infiltration is completed, the clamp clamps the battery cell and heats the battery cell, meanwhile, the inner cavity of the clamp is vacuumized to a high degree, and formation is started; and after the formation is finished, the battery cell is packaged secondarily to finish preparation of the soft package battery. Compared with the prior art, baking, liquid injection and formation are carried out in the same clamp in a centralized manner, progressing and simplifying are carried out layer by layer, the time from baking to formation in battery cell preparation is shortened step by step, and the production efficiency of the battery is greatly improved.
Owner:东莞汇洋动力科技有限公司

Method for quantitatively controlling operational stability of servo mechanism by using automatic gear grinding technology

ActiveCN105258945ARealize automatic running-inTargetedMachine gearing/transmission testingGear grindingGear wheel
The invention relates to a method for quantitatively controlling the operational stability of a servo mechanism by using an automatic gear grinding technology. The method can be implemented through adopting an automatic running-in and stability test system. The method includes the steps of movement control, data collection and analysis, and running-in parameter and evaluation criterion establishment. According to the movement control, the servo mechanism moves in a reciprocating manner in an operation position range under control according to movement parameters and operation positions, and automatic gear running-in is performed on the transmission chain of the servo mechanism. According to the data collection and analysis, in an automatic gear running-in process, work state parameter data are acquired, and are processed, and processing results are display in real time. According to the running-in parameter and evaluation criterion establishment, operational stability quantitative detection is performed on the servo mechanism, and the running-in process parameters of the transmission chain of the servo mechanism are determined, and quantitative evaluation criteria of qualified running-in are established. With the method of the invention adopted, automatic running-in of the transmission chain of the servo mechanism can be completed with shortest time and minimum manpower and material resources, and the stability detection of the servo mechanism can be realized with quantitative evaluation indexes, and malfunctioned products can be reduced, and the rate of rework in processes can be reduced, and batch production efficiency and product reliability can be improved.
Owner:SHANGHAI RADIO EQUIP RES INST

Device and method for measuring cracking pressure of a carbon dioxide cracker

The invention discloses a fracturing pressure determining device and method for a carbon dioxide fracturing device. The device comprises an energy leaking cover, a pressure sensor and a signal collecting unit, the energy leaking cover is of a barrel-shaped structure with openings in two ends, the energy leaking cover is installed on an energy leaking head of the fracturing device through an open cover at one end in an opposite-fixation mode, and the pressure sensor is attached to the inner wall of the energy leaking cover and is in signal connection with the signal collecting unit. Through the pressure sensor, during high-speed gasification of liquefied carbon dioxide, a fracturing pressure signal of the fracturing device is measured and transmitted to the signal collecting unit. The fracturing pressure determining device is mainly used for accurately measuring the fracturing pressure of the carbon dioxide fracturing device. The device carries out an experiment conveniently, is easy to operate and accurate and reliable in measurement result, provides possibility for accurate calibration of the liquefied carbon dioxide, and not only can provide reliable data for designing and producing of fracturing devices of different dimensions, but also can analyze and research the change relation between fracturing pressure and distance, so that the utilization rate of energy is increased.
Owner:CENT SOUTH UNIV

Centralized control method for building energy saving

The invention discloses a building energy-saving centralized control method, which includes: S1: using electrical equipment to enter the energy-saving rate detection stage, and detecting the energy-saving rate; S2: judging whether the detected energy-saving rate is greater than or equal to the preset energy-saving rate, if it is judged to be ' If yes', execute step S4, if judged as 'no', execute step S3; S3: modify the control parameters of the electrical equipment or replace the electrical equipment, and then return to step S1; and S4: use the electrical equipment to enter the normal working stage , until the next energy-saving rate detection stage. In the energy-saving detection stage, the electrical equipment alternately works in the energy-saving and non-energy-saving working modes, and calculates the energy-saving efficiency according to the energy consumption data in the two working modes. Compared with the prior art, the present invention can detect the energy-saving status of electrical equipment at any time, so that electrical equipment with poor energy-saving effect can be found in time according to the detection results, which is beneficial to effectively prevent long-term energy waste, and at the same time, the detection is accurate high sex.
Owner:上海银欣高新技术发展股份有限公司

Capacitive two-dimensional force sensor

The invention belongs to the technical field of sensors, and particularly relates to a capacitive two-dimensional force sensor which is mainly used for increasing the response speed and achieving digital output of the sensor by detecting capacitance. The device comprises a strain structural body, the strain structural body comprises a fixed shell arranged on the periphery, a strain table arranged in the center and a plurality of elastic pieces connected between the strain table and the fixed shell, the device further comprises a circuit integrated board arranged at the lower ends of the elastic pieces, and the circuit board comprises a conductive plane. The plurality of elastic pieces and the single conductive plane form a plurality of groups of detection capacitors; the circuit board is integrated with a capacitance detection module which is used for detecting a capacitance change value of a detection capacitor; the processing module is used for processing the capacitance change value into a digital signal; and the communication module is used for outputting the digital signal to a client. The operation of arranging a plurality of fixed polar plates for a plurality of elastic pieces serving as movable polar plates in a matched manner is reduced, and the manufacturing is time-saving and labor-saving.
Owner:航天南洋(浙江)科技有限公司
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