39results about How to "Real-time detection of pressure" patented technology

The invention relates to a method for preparing epoxidized fatty acid methyl esters by using a microchannel reactor. The method comprises the following specific steps of: preparing catalyst formic acid and concentrated hydrochloric acid in a certain proportion; pumping fatty acid methyl ester, a formic acid catalyst, and hydrogen peroxide into the microchannel reactor by using three metering pumps; and washing reaction products, separating and drying to obtain the final product epoxidized fatty acid methyl esters. The whole process is an exothermic reaction process, and peroxyformic acid and epoxidized fatty acid methyl esters are synthesized simultaneously. When the epoxidized fatty acid methyl esters are produced by the method, the temperature of the reaction process can be controlled effectively, high safety can be guaranteed, a module is good in mixing effect, and a product obtained through reaction is high in quality; and the continuous flow reaction is performed, the process is continuous, and high production efficiency is achieved.

The invention relates to a heating reaction kettle. The heating reaction kettle comprises a kettle body, a kettle cover, a cooling coil, a mixer and a motor, wherein the kettle cover is connected with the kettle body in a closed way; the cooling coil is arranged in the kettle; the mixer is arranged in the kettle body, and the middle axis of the mixer is superposed with that of the kettle body; a rotating shaft of the motor is connected with the mixer; the heating reaction kettle is also provided with a heating oven device which is cylindrical and wrapped on the outer wall of the kettle body. The heating reaction kettle disclosed by the invention has the characteristics of being simple in structure, uniform in heating, good in mixing effect, good in reaction and the like, not only avoids the occupation of the inner space of the kettle body by the heating device which is wrapped outside the kettle body, but also has good heating effect.

The invention relates to a shale gas desorption canister capable of regulation and control of a desorption temperature and pressure. The shale gas desorption canister includes a pressure regulating valve, a quick plug connector, a connecting sleeve, a ball valve, a desorption canister cover, bolts, nuts, a wire connection socket, a desorption canister outer cylinder, an inner cylinder, a crawler type heating layer, an O-shaped ring, a temperature sensor and a pressure sensor. The desorption canister adopts the O-shaped ring for sealing and has good sealing pressure-maintaining performance; the pressure regulating value is used for regulating and controlling the pressure inside a canister body; the crawler type heating layer and the wire connection socket are arranged for being conveniently connected with an external controller for regulating and controlling the temperature in the canister; the temperature sensor and the pressure sensor are used for measuring the temperature and the pressure in the canister; the quick plug connector is convenient for gas measurement and collection. The shale gas desorption canister has the advantages of real-time adjustment and measurement of the pressure and the temperature, convenient operation, and safe and reliable use, provides a more scientific desorption canister for shale gas desorption experiments, and provides scientific data for shale gas loss gas evaluation algorithm researches and researches on dynamic equilibrium relationship of the desorption rate with the temperature and the pressure.

The invention discloses an expansion joint failure test method, which is based on a test device. The device comprises a left pipeline and a right pipeline which are mutually connected, a pipeline leftflange and a pipeline right flange which connect the left pipeline and the right pipeline, and an expansion joint which is connected between the pipeline left flange and the pipeline right flange, wherein the non-connecting ends of the left pipeline and the right pipeline are both sealed, sealing cavities are formed inside, and the sealing cavity is internally provided with a heating mechanism; the sealing cavity is externally provided with a high-pressure gas storage tank; the high-pressure gas storage tank is sequentially connected with a balance valve and a flowmeter through the pipelinesand is finally communicated with the sealing cavity. The test device also comprises a sensor for measuring the temperature and the pressure inside the sealing cavity. Whether a leakage phenomenon exists in the expansion joint connection system can be detected, and the leakage rate of the expansion joint connection system can be calculated accurately.

The invention discloses an anti-rock impact blocking structure of an under-construction slope sliding system, which comprises an I-shaped steel rack and a steel plate, wherein the I-shaped steel rack is vertically fixed in a chamber; a masonry blocking wall is arranged at one side of the I-shaped steel rack, and a vertical steel plate is arranged at the other side of the I-shaped steel rack; a sleeper is arranged at one side of the steel plate; holes are formed in the sleeper; springs are arranged between the steel plate and the I-shaped steel rack; one end of each spring is fixedly connected on the I-shaped steel rack, and the other end of each spring is fixed on the steel plate; the outside of each spring is sleeved by a steel sleeve; one end of each steel sleeve is fixedly connected on the I-shaped steel rack, and the other end of each steel sleeve penetrates in the holes of the sleeper; a gap is reserved between each steel sleeve and the steel plate; and crushed gangue is filled in the space between the sleeper and the masonry blocking wall so as to form a crushed gangue filling layer. The impact force of rock is consumed by the crushed gangue filling layer and then transferred to the masonry blocking wall, so that the impact force applied to the masonry blocking wall is greatly reduced, and then the reliability of the blocking structure is increased. The invention also provides a construction method of the anti-rock impact blocking structure of the under-construction slope sliding system.

The invention relates to a soft material fluidity detection device. The detection device comprises a support, a driving device, an upper pressing mechanism, a pressure detection device, a lower supporting part and a displacement detection device, the driving device is installed on the support, and the driving device is connected with the upper pressing mechanism and drives the upper pressing mechanism to move downwards; and the lower supporting part is located in the support and located below the upper pressing mechanism, the pressure detection device is installed on the upper pressing mechanism, and the displacement detection device is installed on the support and detects displacement of the upper pressing mechanism. The driving device is used for driving the upper pressing mechanism to move downwards, the upper pressing mechanism is used for extruding materials on the lower supporting part, the displacement detection device on the support and the pressure detection device on the upper pressing mechanism are used for obtaining a displacement measurement value and a force measurement value in the pressure implementation process at the same time, the flow characteristics of the material are obtained by measuring the relationship between the pressure and the displacement when the material is forced to move, the principle feasibility is high, and the result can be accurately compared.

The invention discloses multi-purpose air regulation and fire refuge equipment for a residential toilet. The multi-purpose air regulation and fire refuge equipment comprises a control box, a control face board, a three-way valve, a smoke filter, a two-way pipeline fan, an air butterfly valve and a plurality of air sensors, wherein the control face board, the three-way valve, the smoke filter, thetwo-way pipeline fan, the air butterfly valve and the plurality of air sensors are electrically connected with the control box correspondingly; an inlet and outlet A of the three-way valve communicates with an outdoor ventilation opening or a ventilation opening leading to other rooms in the toilet through a pipeline, an inlet and outlet B communicates with a public ventilation opening through a pipeline, an inlet and outlet C sequentially communicates with the smoke filter and an air inlet of the two-way pipeline fan through a pipeline, and an air outlet of the two-way pipeline fan faces theground of the toilet; and the two ends of the air butterfly valve communicate with the inlet and outlet C of the three-way valve and the air inlet of the two-way pipeline fan through pipelines correspondingly, and the air butterfly valve is in an open state during exhausting and in a closed state during air inlet. According to the multi-purpose air regulation and fire refuge equipment for the residential toilet, not only can ventilation be carried out on the toilet in a normal bathing state, but also it can be ensured that a room is in a positive pressure state in a fire disaster and smoke isprevented from entering the room.

The invention discloses an intelligent blood vessel pressure monitor. The pressure monitor comprises a displayer and an elastic wrist strap. The two ends of the elastic wrist strap are fixed at the two ends of the displayer, and a display screen, an alarm indicator lamp and a function setting key are arranged on the displayer; an inner cavity of the displayer is provided with a control circuit board, a pressure sensor and a heart rate sensing chip are arranged on the bottom wall of the displayer, and a single-chip microcomputer, a sensing signal amplification module, a display module, an alarm module and a signal transmission module are arranged on the control circuit board. The pressure monitor is simple in structure principle, high in intelligent degree and capable of detecting the arterial blood vessel pressure and the heart rate of a user in real time; corresponding numerical values can be displayed on the display screen in real time; meanwhile, the corresponding numerical values can be sent to mobile phones of family members in real time, and the safety performance is high.

The invention provides a conveyor belt type auxiliary feeding device for garment overlock sewing. The conveyor belt type auxiliary feeding device comprises a sewing platform (1) and a sewing machine head (2) and is characterized in that a first fixed pulley (7) and a second fixed pulley (8) are correspondingly installed on the side face of the sewing machine head (2), and an annular belt (4) is arranged in a peripheral area formed by the first fixed pulley (7), the second fixed pulley (8) and the bottom of a sewing presser foot (3); and a circle of gear belt (6) is embedded in the middle of the inner annular face of the annular belt (4), a driving gear (13) is coaxially fixed to an output shaft of a servo motor (10), and the driving gear (13) meshes with the gear belt (6) on the annular belt (4). The conveyor belt type auxiliary feeding device for garment overlock sewing is reasonable in structure, cloth with coating on the surface and larger skin-friction coefficient can be smoothly sewn, even if high-speed sewing is carried out, burning marks cannot appear on the cloth, the sewn cloth is not damaged, the sewing quality is good, the attractiveness is improved, and the sewing efficiency is improved.

The invention discloses a device for detecting abnormity of a deionized water cleaning valve in a semiconductor process technology. The device is mounted in a plurality of deionized water cleaning control units, and each deionized water cleaning control unit comprises a cleaning valve body, a gasket high-pressure flushing unit and a gasket adjusting cleaning unit; and the cleaning valve bodies, the gasket high-pressure flushing units and the gasket adjusting cleaning units are connected in sequence through pipelines. The device comprises a plurality of flow monitoring components, and the flow monitoring components are correspondingly arranged on the pipelines between the cleaning valve bodies and the gasket high-pressure flushing units respectively and monitor the flowing speed of deionized water. The flow monitoring components are flowmeters. The device can detect the flow speed and the pressure of the deionized water in real time, and therefore abnormal conditions of damage, blockage and the like of the deionized water cleaning valve can be detected in time.