129results about How to "Little effect of temperature change" patented technology

The invention relates to an ultraviolet curable ink and a preparation method thereof. The ink comprises 30-60% of light sensitive resins, 15-45% of active monomers, 1-10% of ultraviolet light initiators, 10-20% of pigments and 0.5-2% of auxiliaries by mass and is an ink which is transformed from liquid state to solid state to be cured after binders in the ink are cross-linked under the irradiation of ultraviolet lights with certain wavelengths. The ultraviolet curable ink provided by the invention has the advantages of short light curing time, no need of heating, conservation in energy consumption, no volatile organic solvent VOC (Volatile Organic Compounds) in the ink, no pollution to the atmosphere, smaller effect of temperature variation on system viscosity, high solid content, suitability for multiple production methods and production requirements and excellent comprehensive properties, can be machined and used within a wider temperature range; and very good printing effects of the ultraviolet curable ink on both a hard substrate and a soft substrate can be obtained.

The invention discloses a micro-disturbance-torque environment simulation device suitable for a spacecraft simulated test. The micro-disturbance-torque environment simulation device comprises a base, an air floating ball bearing pair, an adapter ring and an instrument platform. The air floating ball bearing pair comprises an air floating ball shaft, a public buffering cavity, single-row annular gap throttle holes, an air discharging hole, annular gap throttle devices and an air floating ball bearing, wherein the base is installed on a foundation, the lower end of the air floating ball bearing is installed on the base, the air floating ball shaft can be suspended on the air floating ball bearing, the air floating ball shaft can have a three-dimensional rotary freedom degree, the adapter ring is arranged at the upper end of the air floating ball shaft, and the adapter ring is fixedly connected with the instrument platform. The micro-disturbance-torque environment simulation device is simple in design principle, safe and reliable, and meanwhile has the advantages of an ordinary air bearing.

The invention discloses a laser optical disc-based digital inclined-angle sensor. The laser optical disc-based digital inclined-angle sensor comprises a housing, a fixing seat, two laser head assemblies and a turnplate, wherein the two laser head assemblies and the turnplate are arranged in the housing. The fixing seat is fixed on an upper of the housing. A circuit board is arranged in the fixing seat. The circuit board is provided with a microprocessor. The two laser head assemblies are connected to the microprocessor by two circuits. The two laser head assemblies are located below the fixing seat. The turnplate is located below the two laser head assemblies. The turnplate is fixed in the housing by a rotation shaft. The turnplate is provided with a pendulum bob. The periphery of the turnplate is provided with a round of reflector panels. Tops of the reflector panels are located behind the two laser head assemblies. The reflector panels are provided with multiple nicks. The laser optical disc-based digital inclined-angle sensor has the advantages of high resolution ratio, high precision, stable and reliable performances, good linearity, high signal-noise ratio, low influence caused by a temperature change, wide measuring range (360 degree), simple structure and low cost.

The invention discloses synthetic base drilling fluid, which comprises ingredients: base fluid, alkalinity regulating agents, weighting agent and water, wherein emulsion which has the PH value being 8.5 to 10 and the specific weight being 1.2 to 2.0g/cm<3> and is formed by uniformly mixing the ingredients is the drilling fluid, and the base fluid comprises ingredients: limonene, bipentene, butylcellosolve, alkyl polyglucoside, alcohol ether carboxylate, white oil and simethicone. The drilling fluid has the advantages of both ether base type drilling fluid and alpha-olefin type drilling fluid, the influence on the viscosity of the drilling fluid caused by the temperature change is little, the application range is wide, the adopted raw materials hardly contain dutrex, in addition, the price is low, the production cost is low, the biological degradability is good, the environmental-friendly effect is realized, the drilling fluid can adapt to wide acid-base conditions, and excellent surface activity, lubricating performance and chemical stability are realized.

The invention discloses a plantar pressure distribution detection system which comprises a detection layer and a processing sending module, wherein the detection layer is configured to detect plantar pressure signals and converts the detected plantar pressure signals into electric signals; the processing sending module is configured to receive the electric signals converted by the detection layer, process the received electric signals and send the processed electric signals to an external receiving device. The invention further discloses a manufacturing method of the plantar pressure distribution detection system. According to the plantar pressure distribution detection system and the manufacturing method of the plantar pressure distribution detection system, a piezoelectric electret used by the system and the method has the advantages of being light, thin and soft, the piezoelectric response is large, the linearity is high, influences of temperature changes within the work temperature range are small, influences of shearing force are small, no influence of bending exits, and thus the plantar pressure distribution detection system and the manufacturing method of the plantar pressure distribution detection system are suitable for real-time detection of plantar pressure distribution.

The invention discloses a weak current detecting circuit of a nitrogen-oxygen sensor, which comprises a current-voltage conversion circuit, a differential low-pass filter and an instrument operationalamplifier, which are connected in sequence. The current-voltage conversion circuit is formed by connecting a sampling resistor to a signal loop; the current-voltage conversion circuit is used for converting a current signal collected by a nitrogen-oxygen sensor into a voltage signal of N times; after high-frequency interference is filtered by the differential low-pass filter, the voltage signal is output after being accurately and effectively amplified by an instrument operational amplifier, wherein the value of N is equal to the value of resistance of the sampling resistor. The weak currentdetecting circuit of a nitrogen-oxygen sensor in the invention can accurately amplify the weak voltage signal. Such an instrument amplification circuit has the characteristics of low offset, low output error, high signal-to-noise ratio, high common-mode rejection ratio, high gain and the like.

The invention provides a lubricating method for wind power generator, which comprises a lubricant, a wind power generator. Compound lubricant is adopted; the main lubricating parts of the wind power generator include a gear box, a generator bearing, a crab system bearing and gear, a hydraulic brake system and a min bearing. Compared with the ordinary mineral grease, the adopted compound lubricant has the advantages of excellent viscosity-temperature characteristics and little impact due to temperature change, is able to ensure easy startup under low temperature and no loss under high temperature, thereby providing sufficient lubrication for the friction parts. In addition, with excellent stability of thermal oxidation and little loss in vaporization, the lubricant can be used for a long time under rigid working condition and climatic situation. Especially, with high biodegradation rate, the compound lubricant can be widely promoted as it results in no pollution to the soil and water source.

The invention relates to a surfactant flooding system and application thereof. The surfactant flooding system comprises the following materials in percentage by weight: 1-4% of sodium petroleum sulfonate, 0.5-1% of isomeric alcohol ethoxylate, 0.5-1% of N,N'-dilauroyl-ethylenediamine-sodium diethanesulfonate, 1-4% of organic cosolvent isopropanol and the balance of water, and the sum of the weight percents of all the materials is 100%. In the wide concentration range (0.1-0.5%) of the surfactant, the oil-water interfacial tension can be reduced to an ultralow value at such order of magnitude as 10<-3> mN/m, the field experiment effect is remarkable, and the system is resistant to temperature (80 DEG C) and can be slightly influenced by the change of temperature.

The invention discloses a dry powder adhesive for paper products, which comprises the following components in parts by weight: 2-25 parts of acrylic ester, 0.1-5 parts of emulsifier, 0.1-12 parts of methacrylic acid, 0.1-12 parts of cross-linking agent, 0.01-12 parts of accelerant, 1-35 parts of filler, 35-65 parts of starch, 0.01-8 parts of oxidant, 0.01-0.2 parts of preservative and 1-25 parts of water. Correspondingly, the invention also provides a preparation method of the dry powder adhesive for paper products. According to the invention, the solid content of the dry powder adhesive for paper products is as high as 95%, the transporting cost can be reduced, the storage space can be reduced and the guarantee period can be prolonged, and the dry powder adhesive can be stored also at (-20) DEG C, and is lightly affected by temperature change, thus the problems that the adhesive in the prior art is liable to solidify in severe cold areas and is inconvenient for using are solved; and in addition, the dry powder adhesive is excellent in bonding strength and high in T-type peel strength.

The invention provides a base fluid for a biomass drilling fluid and a preparation method thereof. The base fluid comprises, by weight, 60 to 90 parts of amino acid alcohol ester, 5 to 30 parts of polyetheramine alkyl glucoside and 5 to 10 parts of methylsilicone oil. The above components are mixed so as to obtain the base fluid for the biomass drilling fluid. According to the invention, amino acid alcohol ester has the advantage that the viscosity of amino acid alcohol ester is slightly influenced by temperature changes as the viscosity of ester substances, and has the characteristics of environment friendliness and biodegradability; through addition of polyetheramine alkyl glucoside, the surface activity of the base fluid is substantially improved, so the base fluid has good ecological security and intermiscibility; and as methylsilicone oil is added, the base fluid has good lubricity, physiological inertness and chemical stability. Thus, the base fluid for the biomass drilling fluid in the invention has the advantages of high environment friendliness, a wide viscosity range, a low freezing point, good lubricity, etc. and can meet performance demands for preparation of base oil for the drilling fluid. The invention also provides the biomass drilling fluid.

The invention discloses a die locking mechanism, wherein, a die moving guide rail pair is utilized to lead two die locking device to move in the opposite directions; a die locking guide rail pair is utilized to close pivoted arm connecting seats; a die locking oil cylinder is taken as driving power and pivoted arms are used for transmission so as to achieve the closure or separation of the two pivoted arm connecting seats, and the two pivoted arm connecting seats can move synchronously with the help of a synchronous gear device; in addition, an anticollision rack and an anticollision block are additionally arranged on the die locking mechanism, so that the safety can be ensured when the die locking mechanism operates. Due to the effects of the mechanical principle and the guide rail pair,the die locking mechanism ensures that the stress central point is not changed when templates on the pivoted arm connecting seats act on a die, the templates are not easy to be deformed even if a large-scale die is closed, and the guide rail pair and a corresponding slide block are less vulnerable to abrasion; the pivoted arm-type closing is adopted, so that the closing force of the pivoted arm connecting seats can begreatly increased further, the die locking force is enough, the two pivoted arm connecting seats can move synchronously and can be closed synchronously with the help of the synchronous gear device at the same time, and the product quality can be enhanced greatly.

The invention discloses an ultraviolet disinfection water treatment system and method capable of automatically adjusting ultraviolet irradiance. The system comprises a water treatment tank. A water inlet pipe, a water outlet pipe, an ultraviolet irradiatometer and an online water quality detector are arranged on the side wall of the water treatment tank. A plurality of thin-walled retaining wallsand a steel frame are arranged on the inner wall and the top of the water treatment tank respectively, and a plurality of submerged ultraviolet lamps and ultraviolet sleeves are arranged at the bottomof the steel frame. Water to be treated enters the water treatment tank from the water inlet pipe, flows through the thin-walled retaining walls to form large vortexes, is disinfected by the ultraviolet lamps and finally flows out through the water outlet pipe. The power of the ultraviolet lamps is automatically controlled in two ways through the ultraviolet irradiatometer, the online water quality detector and a control computer, the ultraviolet lamps are automatically cleaned, and efficient, low-carbon and energy-saving disinfection is achieved. The ultraviolet lamps can be scientifically arranged and distributed, so that the disinfection action time is prolonged, the water body is further purified, and the working efficiency is improved.

The invention discloses a high-chromium nickel-based superalloy, a diesel engine gas valve and a diesel engine gas valve manufacturing process. The high-chromium nickel-based superalloy comprises thefollowing essential elements: by mass, 35-45% of Cr, 1.0-5% of Al, 0.2-15% of Fe, 0.1-10% of Co, and the balance Ni and impurities, or Ni, impurities and any element. The diesel engine gas valve is made of the high-chromium nickel-based superalloy. The diesel engine gas valve manufacturing process adopts the electric upsetting-forging forming process; in the electric upsetting process, a high-order segmental dynamic loading mode is adopted to apply electric upsetting forming process parameters; the electric upsetting forming process parameters include the electric upsetting current; accordingto the high-order segmental dynamic loading mode, the electric upsetting process is subdivided into 10 segments or more, the corresponding electric upsetting forming process parameters are loaded to each segment of the electric upsetting process, and accordingly, the amplitude of variation of the electric upsetting forming process parameters is reduced. Through the high-chromium nickel-based superalloy, the diesel engine gas valve and the diesel engine gas valve manufacturing process, the hot forming property of the nickel-based superalloy can be improved, the crystal grain uniformity of electric upset parts is promoted, and surface waviness of the electric upset parts is improved. The hardness, high temperature resistance, corrosion resistance and creep resistance of the diesel engine gasvalve are improved.

The invention relates to a low-heat expansion quartz gauge rod as well as a demarcating method and application thereof. The low-heat expansion quartz gauge rod is characterized by being in a the structural form of taking a low-heat expansion coefficient quartz rod as a main body; two ends of the quartz rod are sleeved with metal sleeves; the end surfaces of the metal sleeves arranged on the two ends are respectively provided with cone sockets; the cone angles and the depths of the cone sockets arranged on the two end surfaces are same; and centre lines of the cone sockets arranged on the two ends are overlapped. The invention is very little influenced by temperature, only needs a small number of survey stations when in use, effectively reduces the influence of measurement temperature errors, machining precision and data fitting errors on the working lengths of gauge blocks and is especially suitable for demarcating parameters of an articulated type coordinate measuring machine.

The invention discloses a graphene oxide standard leak and a graphene oxide helium permeating component. The standard leak has graphene oxide as a permeating material. The graphene oxide helium permeating component includes a lengthwise cylinder and an internal overlapped structure. The two ends of the lengthwise cylinder are perforated and are provided with a front discharge support structure anda rear discharge support structure which are of a silk screen structure. The internal overlapped structure includes a front filtering net, an O-shaped seal ring, a graphene oxide film assembly, an O-shaped seal ring, and a rear filtering net, wherein the front filtering net and the rear filtering net have the same structure, and the internal overlapped structure is a symmetrical structure with the graphene oxide film assembly as the center. According to the invention, leaks with an extreme low leak rate at 10-15Pa.m/s and an extreme high leak rate at 10-3Pa.m/s can be obtained, has the advantages of wide range and small influence imposed by temperature changes. Also, standard leaks with high stability can be researched and manufactured, and uncertainty in the measurement process can be reduced.

The invention discloses a reading circuit and a calibration method thereof, and relates to the technical field of uncooled infrared focal plane arrays. The reading circuit comprises a row-level circuit, a pixel-level circuit, a bias voltage generation circuit and a column-level circuit. The output end of the row-level circuit is connected with the input end of the bias voltage generation circuit;the bias generation circuit at least comprises a low TCR resistor and a blind resistor; a first bias voltage and a second bias voltage are output to the column-level circuit according to the output ofthe row-level circuit and the input constant voltage; and the column-level circuit is also connected with the pixel-level circuit, obtains two paths of current according to the first bias voltage andthe second bias voltage, converts the generated differential current and outputs the converted differential current as output voltage. By adjusting the low TCR resistor and the blind resistor, correction of the reading circuit is realized.

The invention relates to a straight-through type C-shaped bourdon tube high-pressure sulfur-resisting pressure gauge which comprises a joint (4), a C-shaped bourdon tube (6), an upper joint (7), a lower joint (8) and a connecting rod (9), wherein the joint (4) is connected with one end of the C-shaped bourdon tube (6); the C-shaped bourdon tube (6) is connected with the connecting rod (9); and a pressure measuring mechanism (5) is connected with the connecting rod (9). The manufacturing method comprises the steps of manufacturing the C-shaped bourdon tube and assembling the pressure gauge, wherein the C-shaped bourdon tube is manufactured through the steps of S11, preparing a blank; S12, machining the appearance; S13, machining an inner hole; S14, threading; S15, machining the outer wall of the tube; S16, bending and shaping; S17, vacuumizing and heating; and S18, carrying out aging treatment, The pressure gauge is assembled through the steps of S21, assembling the C-shaped bourdon tube; and S22, assembling a gauge head, wherein the C-shaped bourdon tube is made of nickel base alloy material. The pressure gauge has the advantages of high-pressure resistance, corrosion resistance, precision stability and convenience in maintenance.

The invention discloses components and parts of a mechanical machine tool and a manufacturing method thereof. The manufacturing method mainly comprises the following steps: according to characteristic structures and the high rigidity of the components and parts of the mechanical machine tool, mounting and setting proper steel brackets, reinforcement net materials and other reinforcement structures into mold cavities of a molding mold; mounting required metal parts, wiring pipelines, tracks and other embedded components; and then pouring the mixed slurry of artificial stones into the molding mold for coagulation formation, and after demolding and subsequent manufacturing operations, obtaining the components and parts of the mechanical machine tool consisting of artificial stone bodies. The manufacturing process is simple and reduces the energy consumption; and simultaneously, characteristics of the artificial stones can be utilized to endow the components and parts of the mechanical machine tool with excellent mechanical performance, such as good vibration damping effect, low coefficient of heat conduction and the like.

The invention discloses an intelligent support sliding bearing device with adjustable clearance and a clearance adjustment method. The intelligent support sliding bearing device comprises a support sliding bearing, an inclined block is arranged under the support sliding bearing, a guide rail is arranged under the inclined block, the bottom surface of the inclined block is matched with the guide rail in a sliding mode, the inclined block moves in the axial direction of the guide rail, the top surface of the inclined block is an inclined plane with a taper of 1 to 125, a pushing mechanism is arranged at one end of the inclined block, the other end of the inclined block is connected with a reset spring, and a vertical displacement sensor and a horizontal displacement sensor are respectively used for detecting the vertical radial displacement and the horizontal radial displacement of a rotor; the vertical displacement sensor and the horizontal displacement sensor are connected with the input end of a monitoring controller, and the output end of the controller is further connected with the control signal input end of a servo motor; when the rotor vibration is too large, signals collected by the sensors are sent to the controller, the controller controls the servo motor to make a certain action, and the clearance between the bearing and the shaft neck is changed, so that the elliptical bearing play a role, the rotor amplitude is reduced, and the whole system has a good effect of vibration reduction and suppression.