37results about How to "Same test conditions" patented technology

The invention discloses a detection system for air tightness of a valve. The system comprises a water tank, a water tank bracket, upper and lower pneumatic cylinders, a manipulator bracket, a plurality of manipulators and a manipulator transmission mechanism, wherein a water channel, a water inlet cylinder and a plurality of valve clamping fixtures are arranged in the water tank; the valve clamping fixtures are connected with the water inlet cylinder; the water tank bracket is fixedly arranged on the upper side of the water tank; the upper and lower pneumatic cylinders are arranged on the water tank bracket; the manipulator bracket is connected with piston rods of the upper and lower pneumatic cylinders; the manipulators are ranged on the manipulator bracket; each manipulator comprises a main shaft, a manipulator cylinder, a manipulator clamp and two clamping arms; the main shafts are provided with transmission gears; the manipulator cylinders are connected with the main shafts; the manipulator clamps are fixedly connected with the manipulator cylinders; the clamping arms are hinged in the manipulator clamps; one end of each clamping arm is hinged to the piston rod of the manipulator cylinder through a connecting arm respectively; the manipulator transmission mechanism comprises a transmission cylinder and a rack which is fixedly connected to the transmission cylinder; each transmission gear is engaged with the rack. The system can realize that the opening angle of a to-be-tested valve at each station is consistent to guarantee consistent testing condition of each to-be-tested valve and further achieve a more accurate test result.

The invention provides material biological compost degradability detection evaluation equipment and a material biological compost degradability detection evaluation method. The equipment comprises an air supply and purification system, an air flow control system, a compost reaction system, a temperature control system and a CO2 absorption system which are arranged in sequence, wherein the air supply and purification system comprises an air compressor, a suck-back preventing bottle, an air purification bottle, a pressure maintaining valve, a pressure regulating valve and an electromagnetic valve, connected in sequence; the air flow control system comprises a flow control device; the compost reaction system comprises a humidification bottle and a compost reaction bottle; the CO2 absorption system comprises a condensation bottle and a CO2 absorption bottle. The equipment and the method have the benefits that inorganic carbon dissolved in the CO2 absorption bottle can be detected periodically through a potentiometric titration method to be taken as the accumulated CO2 emission capacity generated by the compost reaction bottle, and the method is simple and accurate.

The invention provides a determination method applicable to the purification effect of a passive air purification product on TVOC. The method includes the steps of: S1. preparing a TVOC contamination liquid; S2. maintaining consistent test conditions to a test chamber and a blank chamber, and putting a to-be-tested sample in the test chamber; S3. adding the TVOC contamination liquid prepared by S1 at an equal amount to the test chamber and the blank chamber; S4. acquiring the initial concentration of TVOC in the two experimental chambers, and after a period of reaction, acquiring the terminate concentration of TVOC in the two experimental chambers respectively; and S5. conducting test analysis and calculating the natural attenuation rate of the blank chamber and the purification efficiency of the to-be-tested sample on TVOC pollutants. The method provided by the invention uses the experimental chambers special for air purification detection, can effectively prevent the leakage of TVOC pollutants, also reduces the experimental operation error and shortens the whole test cycle, and significantly improves the test accuracy and result repeatability, and can be used for identification and evaluation of the purification performance of a passive air purification product on TVOC pollutants.

The invention belongs to an insect feeding device, and particularly discloses an adult plutellaxylostella feeding bottle. The feeding bottle comprises a feeding bottle body and a plug, wherein openings are formed in the two ends of the feeding bottle body, the plug is arranged in the opening in one end, the other end of the feeding bottle body is sealed with a preservative film I and a preservative film II, the preservative film I is located on the inner side, the preservative film II is located on the outer side, the preservative film I is provided with multiple holes, and multiple vegetable leaves are arranged between the preservative film I and the preservative film II; the plug comprises a bottle body, a bottle cap and a KT plate, and distilled water is arranged in the bottle body. By the adoption of the feeding bottle, continuous and stable supply of water is guaranteed, and shooting of eggs on the main egg laying surface is more convenient.

The invention provides a multi-channel inertial navigation test system, and relates to the technical field of inertial navigation tests. The system comprises a processor, and an input / output module and a storage module which are electrically connected with the processor, wherein the input / output module is used for being connected with inertial navigation equipment, the processor is used for achieving interactive communication with the inertial navigation equipment through the input / output module and conducting logic processing on input data, and the storage module is used for storing test programs, test data and test results. The system can effectively shorten the respective test time of multiple sets of systems, can ensure that the test conditions of each set of system are completely consistent, can support various types of hardware interfaces, and has certain universality.

The invention discloses a device for measuring the expansion rate of an oil well cement test block and belongs to the technical field of cement preparation. The device comprises a base, stand columns and a clamping arm, the lower ends of the stand columns are connected with the base, and the upper ends of the stand columns are connected with the clamping arm; the device is characterized by further comprising a thermotank and a temperature controller, the thermotank is fixed to the base, the inner wall of the thermotank is connected with a heating tube, the outer wall of the thermotank is connected with an insulating layer, the inner wall of the thermotank is connected with a thermocouple, the temperature controller is electrically connected with the thermocouple and the heating tube, the clamping arm is connected with a dial gauge, a downward-recessed seat is fixed to the bottom wall of the interior of the thermotank, an upward-recessed seat is fixed to the top wall, the upward-recessed seat penetrates through the top wall of the thermotank and is connected with the dial gauge, and a standard bar is inlaid between the downward-recessed seat and the upward-recessed seat. By means of the device, the expansion rate of the oil well cement test block can be measured under different environment temperatures, objective data reference is provided for oil well cement under site construction, and the device has the advantages of being high in measurement precision and accuracy.

Some sample of relevant food is estimated by some professionals with their sensory organ or tested through conventional physical and chemical analysis to establish correlative data base. Some other sample is determined with sensor array through carrying the smell of the food to the sensor array reaction chamber via carrier gas, amplifying and filtering the signal from the sensor array, A / D conversion in A / D converter and data processing in computer. The result of computer processing is related with those in the established data base and one knowledge library is obtained through learning for the determination of truth and quality of tested sample. The said method is fast and simple, needs no pre-treatment of the sample and organic solvent extraction, and has the artificial intelligent identification to unknown sample. The present invention facilitates the physical and chemical analysis of food products.

The invention discloses a device for hydro-mechanical characteristic test sampling and harmful gas cutting efficiency test. The device for the hydro-mechanical characteristic test sampling and the harmful gas cutting efficiency test comprises a compressed air source, a gas storage tank, gas flowmeters, stop valves, a safety valve and a simulated gas source. The compressed air source is connected in parallel with the first gas flowmeter via the gas storage tank and is connected with six function-I test rooms and (n-1) function-II test rooms via a plurality of first stop valves; connectors are formed at the bottoms of the function-I test rooms and (n-1) function-II test rooms to be connected with the simulated gas source via one third stop valve after respectively being connected in parallelvia n second stop valves; connectors are respectively formed on the left sides of the function-I test rooms and (n-1) function-II test rooms to be connected to one safety valve via one second gas flowmeter; and connectors are respectively formed at the tops of the (n-1) function-II test rooms to be connected with one fourth stop valve. The device is simple and convenient in design, flexible to operate and good in integrality and can provide help for hydro-mechanical characteristic timeliness test sampling and landfill gas cutting timeliness test research of superstratum soil mass of a landfill.

The invention relates to a testing device and method of bending resistance of fiber materials by adopting a double-end clamping three-bending method. The testing device comprises an upper clamp holder, a lower clamp holder and a counter weight, wherein the upper clamp holder and the lower clamp holder are provided with jaws and used for clamping the upper end and the lower end of a specimen separately, and the counter weight is fixed to the lower end of the specimen and enables the specimen to bear the initial tension to straighten under the action of gravity. The lower clamp holder is drivenby a driving mechanism to move up and down, and during the upward movement of the lower clamp holder, the specimen clamped between the upper clamp holder and the lower clamp holder to form a three-bending shape. The upper clamp holder is connected with a force sensor. The testing device is simple in structure and convenient to operate, the testing method using the device greatly improves the accuracy of testing results, the testing efficiency and the possibility of practical popularization and application, and the problem of testing the bending resistance of the fiber materials is solved successfully.

The invention provides a test box and a test method for light absorption and heating performance of a textile. The test box and the test method can solve the problem that a device and a test method capable of reasonably evaluating the heating performance of the textile under an illumination condition do not exist at present; the test box of the invention comprises a housing with an openable door on the front side; the housing is in transparency, an electric control box is mounted on the outer wall of the rear side of the housing; an objective table is arranged in the middle of the inner bottomface of the housing in the left-right direction. The objective table is provided with objective areas which are arranged in a bilateral symmetry mode. A xenon lamp is arranged right above the objective table; the xenon lamp is installed on a lamp holder capable of stretching up and down, the lower end of the lamp holder is fixed on the inner bottom surface of the housing, infrared temperature measuring guns are symmetrically installed on the left side wall and the right side wall in the housing, each infrared temperature measuring gun is provided with a temperature display screen, and measuring heads of the two infrared temperature measuring guns are respectively aligned with the objective areas on the same side; and a power plug, a main power switch, a xenon lamp switch and an infrared temperature measuring gun switch are arranged on the electric control box.

The invention discloses a detection system for air tightness of a valve. The system comprises a water tank, a water tank bracket, upper and lower pneumatic cylinders, a manipulator bracket, a plurality of manipulators and a manipulator transmission mechanism, wherein a water channel, a water inlet cylinder and a plurality of valve clamping fixtures are arranged in the water tank; the valve clamping fixtures are connected with the water inlet cylinder; the water tank bracket is fixedly arranged on the upper side of the water tank; the upper and lower pneumatic cylinders are arranged on the water tank bracket; the manipulator bracket is connected with piston rods of the upper and lower pneumatic cylinders; the manipulators are ranged on the manipulator bracket; each manipulator comprises a main shaft, a manipulator cylinder, a manipulator clamp and two clamping arms; the main shafts are provided with transmission gears; the manipulator cylinders are connected with the main shafts; the manipulator clamps are fixedly connected with the manipulator cylinders; the clamping arms are hinged in the manipulator clamps; one end of each clamping arm is hinged to the piston rod of the manipulator cylinder through a connecting arm respectively; the manipulator transmission mechanism comprises a transmission cylinder and a rack which is fixedly connected to the transmission cylinder; each transmission gear is engaged with the rack. The system can realize that the opening angle of a to-be-tested valve at each station is consistent to guarantee consistent testing condition of each to-be-tested valve and further achieve a more accurate test result.

The invention discloses a method for detecting the oil-well cement expansion rate, and belongs to the technical field of cement preparation. The method comprises the steps of slurrying, mould filling and curing and demoulding. The method is characterized by further comprising the steps of initial measurement, age period measurement and expansion rate calculation, wherein the curing and demoulding step comprises the process that a cement test block is put into a curing box, and demoulding is conducted after curing is conducted; the initial measurement step comprises the process that the direction of the cement test block subjected to demoulding is marked, then the cement test block is put into a measuring device subjected to zero correction, and the initial length L<0> of the cement test block is measured; the age period measurement step comprises the processes that the cement test block subjected to initial measurement is put into the curing box to be cured continuously, and the length L<x> of the corresponding age period is measured after the corresponding age period is achieved; the expansion rate calculation step comprises the process that the expansion rate is calculated according to the formula shown in the description, wherein 250 represents the effective length of the cement test block. According to the method for detecting the oil-well cement expansion rate, the expansion rate of the cement test block can be tested at different environmental temperatures, the testing data error can be reduced, and the measurement precision and accuracy of the expansion rate of the cement test block can be improved.

The invention discloses a fixing device for an exposure test of an unmanned aerial vehicle in the natural environment. Firstly, the mounting angle of a carrier on a base is adjusted, and the carrier is enabled to be placed on the base flatly; after the carrier is placed flatly, a to-be-tested product is put in an accommodating cavity; and then, the angle of the carrier on the base is adjusted again, so that the carrier reaches the preset angle, sunlight can irradiate the to-be-tested product through an opening, and a sunlight aging test is conducted on the to-be-tested product conveniently. Meanwhile, a convection port communicating with the accommodating cavity is formed in the carrier, therefore stable convection exchange between airflow in the accommodating cavity and outside airflow is realized through the convection port in a testing process of the to-be-tested product, the humidity and temperature in the accommodating cavity are enabled to be balanced with the humidity and temperature in the environment, and test conditions of the to-be-tested product in the carrier are consistent with outdoor environment conditions, so that reliability of the exposure test is greatly improved.

An insulation performance test device for EMU roof insulators in a complex environment. There are four chambers from left to right: the stable chamber, the low-speed test chamber, the high-speed test chamber and the expansion chamber, and the left side of the stable chamber and the aerosol generator The nozzles of the low-speed test chamber are connected to each other, and the upper part is provided with a funnel; there are roof insulators in the low-speed test chamber, and the upper end of the roof insulator is connected to a high-voltage power supply; the upper surface of the inner wall of the low-speed test chamber is equipped with an ultraviolet There is a glass observation window at the top; a negative pressure fan and an anemometer are installed at the right end of the expansion chamber. The test environment is close to the actual operating environment of the roof insulator, and the test results are more accurate and reliable. At the same time, it can also test and analyze the relationship between various environmental factors and the insulation performance of the roof insulator. So as to provide a more reliable and accurate test basis for the design, manufacture and maintenance of the roof insulator, and better ensure the safe operation of the train.

The fast detection device for microwave ceramics includes an opening parallel plate resonant cavity with step motor, a SCM, a driver for motor, a VNA, and a computer. This invention can detect target dielectric properties with no harm and high precision.