126results about How to "Not affected by ambient temperature" patented technology

The invention relates to a sealant, in particular to a fast-curing one-component polyurethane sealant and a preparation method thereof. The fast-curing one-component polyurethane sealant is characterized by comprising 30%-60% of prepolymer containing silyl-terminated polyurethane, 0.2%-5% of silane coupling adhesion promoter, 0.301%-0.35% of catalyst, 10%-40% of plasticizer, 10%-60% of filler and 0.05-1% of antioxidant, wherein the content of each component is represented by the weight percent. The fast-curing one-component polyurethane sealant has the advantages of fast surface drying, fast curing speed, avoidance of impacts caused by the environmental temperature and the humidity, high cross-linking density, high elongation ratio, good adhesion strength, no solvent, environmental protection and excellent adhesive performance to base materials, such as metal, ceramics, glass, silica PVC, ABC, polystyrene, polyacrylate and the like.

An electromagnetic drive variable-rigidity bionic swing propelling device comprises a support, at least two sections electromagnetic swing units and a tail fin. The whole shape of a fish body is sealed by a fish skin. The first section of electromagnetic swing unit is connected with the head of the head of the fish body. Other sections of electromagnetic swing units are connected with a flexible spine. The last section of electromagnetic swing unit is connected with the tail fin. The electromagnetic swing unit comprises an upper magnetic body, a lower magnetic body, control coils, the flexible spine and an armature. The flexible spine is hollow. A coil for controlling electric currents is embedded into the flexible spine. The upper magnetic body and the lower magnetic body are fixed on the flexible spine respectively. The armature is fixed in the middle of the upper magnetic body and the lower magnetic body. The middle of the armature is fixedly connected with the flexible spine. The control coils are sleeved at two ends of the armature. The flexible spine is driven to bend by the generated electromagnetic torque so as to drive the fish body to swing for propelling. The electromagnetic drive variable-rigidity bionic swing propelling device is small in size, light, continuous in action, easy to implement, low in noise and low in mechanical loss.

The invention relates to a low-temperature-resistant modified asphalt waterproof coiled material. The low-temperature-resistant modified asphalt waterproof coiled material comprises a base substrate,an upper modified asphalt layer, a lower modified asphalt layer, an isolation layer and a covering layer. The waterproof coiled material provided by the invention has the following advantages: excellent low-temperature performance is obtained through component optimization of modified asphalt under the condition of maintaining waterproofness, strength and toughness; and through close cooperation of the modified asphalt with the base substrate, the isolation layer and the covering layer, waterproofness and strength are further reinforced, and the waterproof coiled material is more long-lastingand durable.

The invention provides a semiconductor gas sensor and a temperature compensation method. The sensor comprises a sensor shell, an air-sensitive material arranged in the sensor shell, a heating resistor, an adjustable voltage output circuit, a microprocessor circuit and an ambient temperature acquisition sensor, wherein the heating resistor is arranged in the sensor shell, the voltage output ends of the adjustable voltage output circuit is connected with the two ends of the heating resistor, an output end of the ambient temperature acquisition sensor is connected with a signal acquisition end of the microprocessor circuit, and a control output end of the microprocessor circuit is connected with a voltage output value control end of the adjustable voltage output circuit. The method is characterized in that a heater for changing the temperature of the air-sensitive material of the sensor is arranged in the sensor and used for automatically adjusting heating power according to ambient temperature. The sensor has the advantages of high sensitivity and precision and is convenient to use, and the method is simple, practical, flexible and convenient and is easy to popularize.

The invention provides a concrete beforehand pore-forming static breaking technology. A plurality of containers with a certain sizes, shapes and amounts are embedded in a concrete member before the concrete is cast, a plurality of orifices are arranged above the containers, the inner diameters of the orifices are less than the inner diameters of the containers, and the orifices are extended to the edge of the concrete member. When the concrete member needs to be disassembled, the expanding agent is filled into the containers along with the orifices, the expanding agent is chemically reacted in the containers to generate the expansibility, the concrete member is expanded to be broken, and the whole process is free of noise, vibration and slungshots. Compared with the normal pore-forming type static breaking technology, the expansibility is larger, the expanding agent can be effectively avoided to be sprayed out of the orifices, and the construction is safe and environment-friendly; and the drilling working capacity is eliminated, so that the cost can be reduced, and the disassembly construction period can be shortened, therefore, the technology is suitable for the static breaking of engineering temporary facilities.

The invention relates to a device and method for detecting low temperature breakdown voltage and spectrum of a mixed gas, and belongs to the technical field of high voltage test; the device comprises a SF6 gas mixture charging and recovering device, a low temperature environment setting device, a mixed gas breakdown voltage detecting device and a spectrum collecting device; the method comprises the steps of adjusting distance between electrodes; evacuating a sealed gas chamber and a mixed gas storage tank; filling a cooled mixture into the sealed gas chamber to a set pressure value, and maintaining low temperature; increasing voltage, when the electrodes breakdown, recording oscilloscope readings, and sampling spectrum information when the electrodes breakdown; repeating experiment to get an average value; adjusting the experiment conditions and repeating the experiment; the device and method compensate for experimental measurements in a low temperature environment, and is beneficial for the application of electric equipment in severe cold area and study of micro-parameters of low temperature mixed gas; The device and method can conveniently and accurately control the mixing ratio of the mixed gas, can carry out the recycling and utilization of the mixed gas, can set the temperature of the mixed gas, and the collecting of the spectrum information has a real-time property.

The invention relates to a railway steel bridge surface protective system, which comprises an epoxy zinc-enriched erosion resistant coating, a polyurea elastomer waterproof layer, a connecting layer and a concrete protective layer, wherein, epoxy zinc-enriched materials comprise a composition A and a composition B; the composition A comprises epoxy resin, organic bentonite, zinc powder, additives, inhibitive pigment A, inhibitive pigment B and solvent; the composition B is 115 curing agent, 650 curing agent and solvent; a polyurea elastomer comprises a material A and a material B, wherein, the material A is semi-prepolymer and thinner, and the material B is amine-terminated polyether, amine chain extender, color paste and thinner. The invention also relates to a construction technique for the railway steel bridge surface protective system. By adoption of the construction technique, the antirust property is superior; waterproof coating has superior physicochemical mechanical property; the waterproof layer has no seam; no dead angle exists during the construction process; the construction technique is simple and convenient, and the construction efficiency is high; the anticorrosive and waterproof problems of a steel bridge surface are solved; the durability of a bridge is improved; and the maintenance period and the service life of the steel bridge surface are prolonged.

The invention discloses a spring energy storage hydraulic operation mechanism and an energy storage spring unit. The energy storage spring unit comprises an upper press plate, a lower press plate, and an energy storage spring installed between the upper press plate and the lower press plate in an abutting mode, wherein the upper press plate and the lower press plate are arranged on a cylinder block of a working cylinder in a sleeved mode, the energy storage spring is formed by spiral compression springs which are arranged into an array between the upper press plate and the lower press plate in an abutting mode, and the center line of the spiral compression spring array coincides with the axis of the cylinder block of the working cylinder. On one hand, the machining error of a single spiral compression spring is small, a linear relationship is formed between output force and displacement, performance is stable, the influence of environment temperature is avoided in normal use, and therefore the energy storage spring unit is an ideal energy storage element; on the other hand, the multiple spiral compression springs are arranged in parallel, the slope of the characteristic curve of a single spiral compression spring can be reduced exponentially, ideal output characteristics can be obtained through reasonable design, the effect that large output force is obtained through small displacement is achieved, and the more the springs are, the smaller the length error of the spring assembly is and the higher the output precision is.

An all-fiber pulsed fiber laser device with a composite chamber comprises a semiconductor laser pumping source driven by a semiconductor laser pumping source driving module, a fiber wavelength division multiplexer, a gain medium fiber, a first optoisolator, a photo-coupler, a pigtailed photoswitch driven by a photoswitch driving module, and a second optoisolator, wherein an output terminal of the semiconductor laser pumping source is connected with a short wavelength input terminal of the fiber wavelength division multiplexer, an output terminal of the fiber wavelength division multiplexer is connected with an input terminal of the photo-coupler by successively passing through the gain medium fiber and the first optoisolator, an output terminal of the photo-coupler serves as an output terminal of the laser, one end of the pigtailed photoswitch is connected with a long wavelength input terminal of the fiber wavelength division multiplexer via the second optoisolator, a cascading interference chamber is arranged between the photo-coupler and the pigtailed photoswitch, an input terminal of the cascading interference chamber is connected with a feedback output terminal of the photo-coupler, and an output terminal of the cascading interference chamber is connected with the other end of the pigtailed photoswitch.

The electrolytic decontaminating method for eliminating radioactive contaminant from metal surface includes connecting the decontaminated part to the anode of the power source, connecting decontaminating part to the cathode and feeding electrolyte into the electrolytic decontaminator for electrolytic decontaminating. The electrolyte consists of HNO3 in 3-10 wt%, NaNO3 in 5-20 wt% and water for the rest. The electrolytic current density is 0.1- 0.6A/cm2, and the electrolytic temperature is 20-50 deg.c. The electrolytic decontaminating method may be used for eliminating radioactive contaminant from metal parts of exservice nuclear installation, so that the metal waste may be degraded and reused.

The invention discloses an intelligent video monitoring device and a mounting method. A longitudinal-axis adjusting device of the intelligent video monitoring device comprises an upper end plate, a lower end plate and fixing rods, a guiding rod is arranged between the fixing rods, and an adjusting rod is arranged in the guiding rod. A transverse adjusting device comprises a first fixing seat, a second fixing seat and a length adjusting block, a rotating adjusting device comprises a rotating seat, a mechanical arm and a base plate, and a camera is arranged on the base plate. The mounting methodcomprises the steps that (1) the mounting position is arranged; (b) according to the mounting place and the type of the camera, auxiliary equipment is mounted; (c) a relevant line is arranged according to a drawing; (d) a transverse positioning plate is mounted; (e) the longitudinal-axis adjusting device is mounted; (f) the camera is mounted in a mounting plate; (g) the monitoring position of thecamera is adjusted in the X-axis direction; (h) the monitoring position of the camera is adjusted in the Y-axis direction; (i) the monitoring position of the camera is adjusted in the Z-axis direction; and (j) the mounting angle of the camera is adjusted. According to the intelligent video monitoring device and the mounting method, integral clear images can be caught, and monitoring warning is conducted in real time.

The invention discloses a porous ceria nanorod composite structure and a preparation method of an enzyme solution based on the structure, as well as enzyme-linked immunosorbent assay (Elisa) application, and belongs to the technical field of nanomaterials. The porous ceria nanorod composite structure comprises a ceria nanorod and an antigen or an antibody coated on the outer surface of the ceria nanorod, wherein the simulated enzyme solution prepared by the ceria nanorod composite structure has a wide detection response range and high sensitivity against the antibody or the antigen, the detection limit can achieve the level of 10pg/mL, the preparation method is simple and easy to operate, and the Elisa detection method is easy to operate and good in environmental adaptability, and is not affected by environmental temperature.

The invention relates to a hydraulic steering system, and aims at overcoming the defect that an existing hydraulic steering system is large in impact. The hydraulic steering system comprises steering cylinders, a flow amplifying valve, a steering pump and a steering device, the steering pump is connected with the steering device and the flow amplifying valve, the steering cylinders are connected with the flow amplifying valve, the steering pump supplies oil to the steering pump through the flow amplifying valve, and the control output end of the steering device is connected with the hydraulic control end of the flow amplifying valve; the hydraulic steering system further comprises a control device, and normally open solenoid valves are connected between the control output end of the steering device and the hydraulic control end of the flow amplifying valve; the control device comprises trigger mechanisms which send out trigger signals when the steering cylinders stretch and retract to preset positions, and the control device is connected with the electronic control ends of the solenoid valves and closes the solenoid valves when the trigger mechanisms give out the trigger signals. According to the hydraulic steering system, non-contact cutting is adopted by a steering buffer limiting technology, and the impact force is reduced; steering is smooth and comfortable, a part which needs to be cut off and steered is not prone to damage and invalidation, and the steering reliability of a whole machine is improved.

The invention discloses an external circuit breaker tripping control device of an electric energy meter. The external circuit breaker tripping control device comprises an electric operating unit and more than one circuit breaker unit. The loop of each circuit breaker unit is provided with a wiring board. The wiring board is a shunting component for detecting current. The shunting part of the wiring board is connected with a sampling current lead and performs sampling on a current signal in a sampling loop. A current signal is transmitted to a main wiring board of an electric operating unit. The main wiring board performs analysis and comparison on a detected current signal, thereby determining a normal load current or an overload current. On the condition that the current is the overload current, a CPU on a main circuit board transmits a tripping instruction, thereby driving an electric operating mechanism to trigger tripping of the circuit breaker and realizing overload protection of the circuit breaker. According to the external circuit breaker tripping control device, a bimetallic strip and related components in a traditional circuit breaker are replaced, and a circuit board is utilized for performing overcurrrent determining, thereby realizing higher protection precision, no debugging on the circuit breaker and high convenience in production.

The invention provides a coating for drinking water tube/container liners, a preparation method and a construction method, which can solve the problems in the prior art, such as toxicity and low construction efficiency, etc. The coating of the invention contains no solvent, and all the pigments and auxiliaries pass the FDA approval. Through detection, the products pass the BS6920 standard absolutely and can be safely applied to the drinking water duct liners. Meanwhile, the coating of the invention features rapid curing rate, convenient and fast construction and thick one-time forming film, and is extremely suitable for large-scale drinking water duct construction.

The invention relates to a stern bearing pouring damping device and its reparation method, and belongs to the technical field of a ship damping device. An outer bush in the damping device sleeves to an inner bush, one end is provided with a flange; a pouring body is poured and solidified between the inner and outer bushes; the damping device is installed between a stern bearing propeller boss anda stern bearing; the damping device is connected with the stern bearing propeller boss and the stern bearing through a bolt; the materials of the inner and outer bushes are consistent with that of thestern bearing propeller boss; the pouring body material is an epoxy pouring material; after curing, the tensile strength is not less than 34 MPa, and compression strength is not less than 100 MPa; the notch-free impact intensity of a cantilever beam is not less than 1.7kJ/m2, the thermal deformation temperature is not less than 70 DEG C, and the Barcol hardness is not less than 35. The damping device is easy to dismount, overhaul and replace; the force transmissibility isolating efficiency is more than 50%. The transmission of vibration from the stern bearing to the outside of a ship body canbe effectively controlled, the low-noise shipping is realized; the stern bearing pouring damping device can be poured and processed in a factory and not influenced by environment temperature.

The invention provides an internal suspension core optical fiber grating temperature self-compensation microfluidic sensor. An internal suspension core optical fiber is provided with two fiber cores, wherein the first fiber core (1) is arranged on the inner wall of an optical fiber inner pore duct (2), and the second fiber core (3) is arranged in a ring band-shaped cladding layer (4) of the optical fiber; a fiber grating (5) and a fiber grating (6) which have the same structure are respectively written into the same longitudinal positions of the two fiber cores; the fiber grating (5) and the fiber grating (6) are respectively taken as a sensing unit and a reference unit; the optical fiber inner pore duct (2) is taken as a micro-channel of a sample sensing place; the surface of the micro-channel is provided with micropores (8 and 9); a light source (16) is connected with a standard optical fiber (11) by a coupler (17); the standard optical fiber (11) is connected with the internal suspension core optical fiber (10) by a first tapering point (13); the divided beams respectively enter the fiber core (1) and the fiber core (3), pass through the fiber grating (5) and the fiber grating (6), and finally enter a standard optical fiber (12) after being coupled; the standard optical fiber (12) is connected with a spectrograph (18). The grating temperature self-compensation microfluidic sensor can be used for the multiple fields of medicine, environment detection, food and the like, is accurate in detection result and is not influenced by the environment temperature.

The invention discloses a generating device which can improve temperature-electricity conversion efficiency of a temperature difference generating module and utilize absolute temperature difference of an evaporator and a condenser in an air conditioner and a refrigerator to obtain regeneration energy. The structure thereof includes a temperature difference generating module, a pair of temperature collecting faces of the temperature difference generating module are respectively jointed with an evaporator temperature collector arranged in an evaporator loop in series and a condenser temperature collector arranged in the condenser loop in series. The invention adopts the structure that a pair of temperature collecting faces are respectively jointed with the evaporator temperature collector arranged in the evaporator loop in series and the condenser temperature collector arranged in the condenser loop in series, so as to obtain large and invariable absolute temperature difference, thus improving the temperature-electricity conversion efficiency of the temperature difference generating module and improving the practical value.

The invention discloses a totally-digital laser focusing automatic tracking system. The system comprises a front end sensor, servo motor equipment and a control host. The front end sensor is arranged on a laser device and is used for collecting laser focus signals from the laser device. The servo motor equipment is used for automatically adjusting the focus height of the laser device based on a servo motor. The control host receives the laser focus signals collected from the front end sensor and conducts filtering processing on the signals, then acquires the focus height information of the laser device from the laser focus signals through a recursion average filtering algorithm, and controls the servo motor equipment according to the focus height information so as to automatically adjust the focus height of the laser device. Due to the facts that the front end sensor collects the signals, and the control host processes the signals and controls output signals to be subjected to digital processing completely, the dynamic response speed is high, the signal transmission distance is long, the environment temperature influence is avoided, and measuring accuracy is high. Automatic control is realized, the distance from a laser focus to the central position of the plane of a part is kept unchanged, and processing technique consistency is maintained.

The invention relates to a high-concentration ammonia-nitrogen wastewater treatment set device, which comprises a dissolved medicine dissolution box, a wastewater flow stabilizing and flow guiding tube, a sand and stone exchange cleaner, filter materials, a sand blocking water distributor, sand and stone air stripping pipe, an air compressor output pipe, an air input pipe, a monitoring probe, an automatic control system and the like. The invention can treat the high-concentration ammonia-nitrogen wastewater which can not be treated by a physical chemical and biochemical method, at the same time, the defect that alkali addition, acid addition or temperature raising is needed during the high-concentration ammonia-nitrogen wastewater treatment by other methods for reaching the treatment effect can be avoided, the operation cost is reduced, and the area of the occupied ground is saved. The saturated filtering materials can be used as slow-release fertilizers for plants after being pulverized, and no secondary pollution is caused after the whole equipment operates to the filter material recovery.

The invention discloses a method and device for improving spectrum detection sensitivity. According to the method, the capillary feature of a hollow optical waveguide is used, through active temperature cycle control over the hollow optical waveguide, gas quick gathering and desorption processes are generated in the hollow optical waveguide, and accordingly spectrum detection sensitivity is improved. The device comprises the hollow optical waveguide, a heating/cooling mechanism, a temperature sensor and a temperature controller. The working steps of the device are that gas to be detected goes into the hollow optical waveguide, the hollow optical waveguide is cooled, low temperature is maintained for a while, then, hollow optical waveguide cooling is stopped, quick heating is carried out, high temperature is maintained for a while, during the process, spectral signals with the maximum spectrum detection output amplitude are enhanced spectral signals of gas to be detected, and the concentration of trace gas can be computed according to the enhanced spectral signals.

The invention relates to a nitrogen gas sealed circulating PVA powder processing method. The method comprises the following steps: (1) after a PVA polymer or resin passes through a rotary gas locking device I, the PVA polymer or resin is continuously and uniformly added into a crusher to obtain PVA particles; (2) nitrogen gas is conveyed into the crusher, the PVA particles are conveyed into a grading device to be graded to obtain large-particle PVA and nitrogen gas containing qualified PVA particles, and the large-particle PVA falls into the crusher to be crushed again; (3) the nitrogen gas containing the qualified PVA particles enters a cloth bag dust remover to be subjected to gas-solid separation to obtain fine powder and separated nitrogen gas, and the fine powder passes through a rotary gas locking device II to enter a stock bin; (4) the separated nitrogen gas enters a condenser to be subjected to indirect cooling with a cooling medium to obtain condensed nitrogen gas and condensate water; and (5) the condensed nitrogen gas is boosted by a circulating draught fan and then enters the crusher to be circularly utilized in a sealed manner. The nitrogen gas sealed circulating PVA powder processing method has the characteristics of safety and low energy consumption.

The invention discloses a temperature regulating system based on a combined cycle generating unit. The temperature regulating system is characterized in that an air outlet end of an air heat exchangeris connected with an inlet end of the combined cycle generating unit, and a flue gas inlet end of a hot water generator is connected with an outlet end of the combined cycle generating unit; a wateroutlet end of the hot water generator is connected with a water inlet end of a water tank, and the water tank is connected with the air heat exchanger through a first valve; a first water inlet end ofa low-temperature hot water lithium bromide refrigerator is connected with the water tank through a second valve, and a first water outlet end of the low-temperature hot water lithium bromide refrigerator is connected with the hot water generator; a second water outlet end of the low-temperature hot water lithium bromide refrigerator is connected with the air heat exchanger, and the air heat exchanger is connected with a second water inlet end of the low-temperature hot water lithium bromide refrigerator through a fourth valve; and the low-temperature hot water lithium bromide refrigerator isconnected with a cooling tower, and a third valve is connected with a water outlet end of the air heat exchanger and a water inlet end of the hot water generator.

The invention provides an X-ray image sensor and an image interference correction method therefor. The technical scheme of the invention is that each pixel is connected with two TFT switches; two scanning lines are designed between pixel rows; two reading lines are designed between pixel columns, wherein the scanning and reading of a bright field image and a dark field image are carried out independently; an upper side reading circuit is responsible for the reading of the bright field image; a lower side reading circuit is responsible for the reading of the dark field image; there is one row or n rows of time between the reading of the bright field image and the dark field image. The gray scale of the dark field images in the pixel units in one row is used for correcting the gray scale of the bright field images in the pixel units collected at the same time. There is no need to increase the collection time of the independent dark field images, and the method can correct the interference based on time and space, and effectively improves the image quality.