67results about How to "Accurate data measurement" patented technology

The invention discloses a mechanical seal instantaneous start-stop sealing property test device comprising a dynamic system, a main body sealed mounting platform, a mechanic sealing property parameters measurement system and a pressure supply auxiliary system. The dynamic system comprises a motor (1) and a fly wheel shaft (4) arranged on a bearing support (3); the motor (1) is connected with one end of the fly wheel shaft (4) through a shaft coupling I (2); a clutch (6) is connected with the other end of the fly wheel shaft (4); a fly wheel (5) used for storing energy is arranged on the fly wheel shaft (4); the mechanic sealing property parameters measurement system comprises a torque rotating speed instrument (7) and an industrial computer (16) which are connected with each other; the torque rotating speed instrument (7) is connected with the clutch (6); and the motor (1) and the clutch (6) are connected with the industrial computer (16) separately. The device provided by the invention can be used for testing the performance of a mechanical sealing element not only in an instantaneous start-stop state but also in the traditional stable operation working conditions.

The invention discloses a quality detection device for a door / window screen, belonging to the field of quality detection. The quality detection device disclosed by the invention comprises an overall frame, a screen clamping mechanism, a detection mechanism and a loading mechanism, wherein the screen clamping mechanism adjusts the relative height of a screen fixing rod on the overall frame by utilizing a tensioning mechanism; a screen fixing clamping groove is formed in the overall frame, and the upper and lower sides of a to-be-detected screen are clamped by virtue of the screen fixing clamping groove and the screen fixing rod; the detection mechanism comprises a driving motor, a lead screw sliding table, a support frame, a detection meter bracket, a digital indicator and a sliding rail; the lead screw sliding table is driven by the driving motor and is used for driving the support frame to move along the horizontal direction; a measuring head of the digital indicator faces the to-be-detected screen, and the digital indicator is positioned in the middle of the to-be-detected screen; and the loading mechanism hooks the to-be-detected screen by virtue of a hook so as to realize tension loading of the to-be-detected screen. The special detection device and method are designed according to the screen detection standard, the structure is simple, the detection is convenient, and the intelligent degree is high.

The invention relates to an experimental method and a device for an iron ore pellet roasting process, belonging to the field of iron manufacture production. In order to research the iron ore pellet roasting process in terms of heat transfer, mass transfer, a roasting process mechanism, and the like, the invention discloses the experimental method and the device, wherein the device comprises a gastank, a draft blower, a combustion chamber, a roasting chamber, a smoke exhaust hood, an electronic balance, a PLC system, an industrial computer, a roasting cup, an electromagnetic disconnecting valve, an electrically operated valve, a manual control valve, a pressure gauge, a flow meter, a thermometer, a gas pipeline, an air pipeline, a combustion chamber high-temperature thermocouple, a roasting chamber high-temperature thermocouple, an annular pressure meter, a burner nozzle subassembly, a secondary air annular nozzle, a smoke gas collection hole, a smoke exhaust pipeline, an exhaust blower, a suspension fork, and the like. The device generates smoke gas with different flow speeds, different temperatures and different gases to roast a pellet material layer in a flow-through way, measures and collects relative data, especially the inner temperature distribution of the pellet material layer, and provides important experiment evidence for the theoretical research and the actual production of the pellet roasting mechanism.

The invention discloses a USB probe controller which comprises a USB data interface, a single-chip microcomputer, an FPGA, a data storage device, a level conversion circuit, an interface circuit and a peripheral power supply circuit. The interface circuit is respectively connected with a probe controller body, a radio frequency switch circuit and an electronic switch circuit, the USB data interface receives external computer control signals and transmits the external computer control signals to the single-chip microcomputer, the single-chip microcomputer processes and converts the signals into level signals capable of being directly read by the FPGA, the FPGA receives the signals and respectively inputs control signals into the interface circuit or into the interface circuit through the level conversion circuit according to needs, and therefore the radio frequency switch circuit can be switched on and off, and probes can be controlled. According to the USB probe controller, the probes and a plurality of radio frequency interfaces can be controlled, rotation of the probes in a testing system and on-off of the radio frequency interfaces can be directly controlled through a simple and clear desktop application program in a computer, and therefore easy control and more accurate data measurement can be achieved.

The invention discloses a fire resistance test device for a vertical building partition component in water-spraying protection. The fire resistance test device consists of a device body and smoke exhaust system, a fuel gas heating system, a water supply system, a water draining system, a data measurement and automatic control system, a video monitoring system and a computer, wherein the device body and smoke exhaust system comprises a furnace body, a flue, a chimney and a furnace door; the fuel gas heating system comprises a liquefied petroleum gas tank, a gasifier, an oil-water separator and a burner; the water supply system comprises a water pump, a valve and a spray head; the data measurement and automatic control system comprises a data acquisition controller, a thermocouple, a pressure sensor, a flow sensor, a differential pressure transmitter, a heat flow meter, a temperature controller, a flue regulator and a strain gauge. The fire resistance test device has the advantages as follows: through a unique structure, a water distribution difficulty of the fire resistance test device at high temperature is overcome for the first time in China; the fire resistance test device is safe, high in reliability and accurate in data measurement, can run continuously for a long time, and has a far-reaching guiding significance for a fire protection design technology and an engineering application technology of buildings in China.