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 present invention belongs to the field of cellphone performance detection devices, and particularly relates to a detection device for cellphone compressive performance detection. The detection device comprises a base, a body and an elastic support belt. The body is fixedly installed on the base. The body is provided with a support mechanism for installation of the support belt. The base is provided with a fixing rack. A drive mechanism is installed on the fixing rack. The drive mechanism is above the support belt. The drive mechanism is provided with a pressure head. The drive mechanism drives the pressure head to move downward to press a cellphone placed on the support belt. The detection device has the beneficial effects that the elastic support belt and the pressure head cooperate with each other so as to simulate external flexible pressure on the cellphone, so that the compressive performance of the cellphone is detected accurately; and the detection device has a simple structure, is convenient to operate, detects automatically, reduces labor intensity, and improves detection efficiency.

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 a medical equipment clamping device and belongs to the field of the medical equipment. According to the technical scheme, the medical equipment clamping device is characterizedby comprising a frame, mechanical arms, an arc-shaped positioning block and a push rod; a controller is arranged on the outer surface of the frame, the mechanical arms are movably arranged on the left side of the frame, and the arc-shaped positioning block is arranged in the mechanical arms; the push rod is movably connected to the arc-shaped positioning block, a clamping claw is arranged at theleft end of each mechanical arm, and the clamping claws are welded on the mechanical arms; the outer surface of each clamping claw is sleeved with a rubber pad, a pressure detector is arranged in themiddle of the push rod and is capable of detecting the pressure on medical equipment in real time and avoiding the situation that the surface of the medical equipment is damaged due to excessive clamping pressure when the clamping pressure is excessive, the rubber pads and the positioning block are concentric, and the medical equipment can be clamped in the horizontal and vertical directions whenthe medical equipment is clamped by the mechanical arms; and it is guaranteed that the clamping portion of the medical equipment is not easy to waggle, and the stability is good.

The invention discloses a compaction and injection mechanism of a soil sampling and remedying integrated drilling machine. The compaction and injection mechanism of the soil sampling and remedying integrated drilling machine comprises an outer soil sampling pipe; the top end of the outer soil sampling pipe is connected with a lifting and leading joint; one side of the lifting and leading joint isconnected with one port of a three-way joint; a middle port of the three-way joint is connected with a pressure meter; another port of the three-way joint is sequentially connected with a first ball valve and a second ball valve; a movable joint is connected between the first ball valve and the second ball valve; the second ball valve is connected with a slurry injection hose which communicates with a corresponding slurry injection pump; the bottom end of the outer soil sampling pipe is connected with a compaction drill bit; a jet channel is arranged inside the compaction drill bit; and a plurality of jet holes communicating with the jet channel are evenly distributed in the side circumferential face of the compaction drill bit. The chemical injection depth is higher, pressure in the pipecan be detected in real time, chemical injection is safer, disassembly is safer after the ball valves and the pressure meter are additionally installed, and disassembly is more convenient after the movable joint is additionally installed.

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 a hand nerve rehabilitation training device based on targeted regulating and controlling. The problems that an existing hand nerve rehabilitation training device is simplex infunction and poor in treatment effect are mainly solved. The rehabilitation training device comprises a glove, an inflator pump and a control device, wherein the glove matches palms in shape, is of adouble-layer airbag-type structure and has various hand nerve stimulating functions, the inflator pump matches the glove in use to inflate the glove, and the control device is used for controlling theinflator pump and the glove to work. Through the design, part of the shape of the glove in the hand nerve rehabilitation training device is integrated, but internal finger parts, a palm part and a hand back part are mutually independent, through the double-layer airbag-type structure, electric heating wires, drug permeation packages and electric therapeutic apparatus, pressure stimulation, drug stimulation, temperature stimulation and current stimulation of hands are achieved, thus the different parts such as fingers, the palm and the hand back are independently controlled to accept differentstimulation intensity and stimulation modes, the therapeutic effect is improved, and thus the hand nerve rehabilitation training device has high using value and promotion value.

The invention discloses a box cover withholding tool for a junction box of a solar battery assembly, which is applied to the technical field of withholding of box covers of junction boxes. The box cover withholding tool comprises an operating handle, an external linking mechanism, an internal linking mechanism, a jack catch and a pressure block. The operating handle consists of a membrane spring and a pressure plate at the inner edge. One end of the external linking mechanism is connected with the outer edge of the membrane spring of the operating handle while the other end of the external linking mechanism is connected with the jack catch. One end of the internal linking mechanism is connected with the inner edge of the membrane spring of the operating handle while the other end is connected with a connecting plate, a pressure arm and the pressure block sequentially. The invention has the beneficial effects that time and labor are saved, loss of subfissure of the solar battery assembly caused by overpressure on the box cover by manual pressing can be avoided, and the work efficiency and assembly yield are greatly improved; a pressure gauge is arranged to detect the pressure of all pressure blocks and adjust pressure applied to all buckles conveniently so as to ensure a withholding effect. The box cover withholding tool is simple in structure, convenient to operate and high in precision.

The invention provides a universal five-point support loading type tower crane foundation and a construction method. The stress on a bottom frame, a bottom support rod and a bottom standard joint of the original tower crane is the same as the stress of the cast-in-place integral foundation. The universal five-point support loading type tower crane foundation comprises a bottom frame beam, a loading part and concrete support seats, wherein the bottom frame beam is in a cross shape, the concrete support seats are respectively arranged at the end parts and under the crossing part of the bottom frame beam, the upper parts of the concrete support seats are connected with a support plate through anchor bolts, the bottom plate is detachably connected with the bottom frame beam, the upper part of the bottom frame beam is connected with the bottom frame of the tower crane, the loading part is arranged above the bottom frame of the tower crane, and the loading part, the bottom frame of the tower crane and the bottom frame beam are detachably connected into a whole.

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 a compressor liquid impact prevention device. The compressor liquid impact prevention device comprises a controller, a pressure-resistant refrigerant metal container, a temperature sensor and a pressure sensor, wherein refrigerant returns to a compressor suction port through the pressure-resistant refrigerant metal container; the pressure-resistant refrigerant metal container is provided with a heating device; the temperature sensor detects the internal temperature of the pressure-resistant refrigerant metal container; the pressure sensor detects the internal pressure of the pressure-resistant refrigerant metal container; and the controller controls the heating device to work according to data collected by the temperature sensor, so that the refrigerant flowing through the pressure-resistant refrigerant metal container is kept in a gaseous state and enters the compressor suction port, and compressor damage caused by compressor liquid impact can be prevented.

The invention relates to a split injection mechanism for a soil sampling and repairing integrated drilling machine. The split injection mechanism comprises a soil sampling outer pipe and a coring bitconnected at the bottom end of the soil sampling outer pipe, an elevating joint is connected at the top end of the soil sampling outer pipe, a drug injection channel is formed in the soil sampling outer pipe and the elevating joint, one side of the elevating joint is connected with a connector of one side of a tee joint, a middle connector of the tee joint is connected with a pressure meter, a connector of the other side of the tee joint is sequentially connected with a first ball valve and a second ball valve, a movable joint is connected between the first ball valve and the second ball valve, and a slurry injection hose is connected on the second ball valve, communicated with a corresponding slurry injection pump and used for supplying pressure drugs. The mechanism is deeper in drug injection, the pressure in a pipeline can be detected in real time, the drugs are more safely injected, and the split injection mechanism is more safely disassembled and assembled after ball valves and the pressure meter are additionally mounted and more conveniently disassembled and assembled after the movable joint is additionally mounted.

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 an ophthalmologic operation head fixing and anti-disturbance device which comprises head fixing and anti-disturbance units which are fixed to the two sides of a head respectively and used in pairs, and each head fixing and anti-disturbance unit comprises a main telescopic device, an upper auxiliary telescopic device, a lower auxiliary telescopic device, a telescopic clamping device and a main controller. A main telescopic device piston in the main telescopic device is controlled by the main controller to move, and auxiliary telescopic device pistons in the upper auxiliary telescopic device and the lower auxiliary telescopic device are controlled by the main controller to move, so that the telescopic clamping device makes contact with the head of the patient, and the head of the patient is clamped. According to the technical scheme, optimal clamping force can be provided for the head of a patient, optimal posture control is provided for implementation of an ophthalmic operation, and operation errors caused by slight vibration and disturbance of the head of the patient during the ophthalmic operation are eliminated, so that the operation quality and speed of an ophthalmologist are improved, the time of the patient in an operating room is shortened, and the pain time is reduced.

The invention discloses a clamping method of a special clamp, and belongs to the technical field of clamping. The special clamp comprises a clamp base provided with a clamp support at the upper end, and the side end of the clamp support is connected with a clamping oil cylinder, a fixed block is connected to the inner end of the clamp support, a movable pressing plate is arranged on the inner sideof the clamp support, a rotating shaft is rotationally connected to the middle of the movable pressing plate, and the end part of the rotating shaft is fixedly connected with the inner end of the clamp support, and a stretching spring is connected between the lower end of the movable pressing plate and the tail end of the fixed block, a fixed pressing block is connected to the upper end of the clamp support, and a steel pipe is arranged between the fixed pressing block and the movable pressing plate, the fixed pressing block is connected to a main controller, a pressure detecting mechanism isarranged on one side, close to the steel pipe, of the fixed pressing block, and the steel pipe is stably clamped through a clamp type clamping method, the pressure of the clamping part on the clamp can be detected in real time, and once the pressure exceeds the manual preset threshold value, automatic alarm can realize to remind a worker, the fault information can be transmitted remotely, and thesafety performance is improved to a great extent.

The invention relates to a secondary series-connection enclosed-loop pressure-stabilizing air generation device with high accuracy for an instrument. According to the invention, compressed air provided by an air source supply device firstly is subjected to the effects of an air purification device to filter out impurities such as water and oil, then the compressed air flows through a first electric / air servo valve and enters a first control loop, thereby obtaining stabilized-pressure air of 0.8Mpa; and then the compressed air enters a second electric / air servo valve and enters a second control loop, thereby obtaining stabilized-pressure compressed air the pressure of which is set artificially at the range of 0.2Mpa-0.6Mpa. According to the invention, the pressure of air in an air storage tank can be detected in real time, and the final air pressure fluctuation is controlled in a small threshold range through the enclosed-loop feedback, so that under the condition of high flow rate, a pure, fine and stable air source is provided for the following experiment equipment.

The invention discloses an ultrasonic automatic detection device and a cable internal damage detection method. The detection device comprises an ultrasonic detection module and a mechanical arm moving device. The ultrasonic detection module comprises a pressure sensor, a first connecting disc, hydraulic telescopic pipes, a second connecting disc, distance measuring sensors and an ultrasonic transceiver. The first connecting disc is installed at the tail end of the mechanical arm moving device through the pressure sensor. The second connecting disc and the first connecting disc are connected through a plurality of hydraulic telescopic pipes. The hydraulic telescopic pipes are evenly distributed in the circumferential direction of the axis of the first connecting disc. A spiral limiting layer is arranged in the side wall of each hydraulic telescopic pipe. The hydraulic telescopic pipes are connected with a hydraulic source and can independently control liquid filling and discharging. The ultrasonic transceiver and a plurality of distance measuring sensors are installed on the outer side of the second connecting disc. The distance measuring sensors are evenly distributed in the circumferential direction of the ultrasonic transceiver. According to the invention, the automatic detection of a flexible structure can be realized, the operation of manually holding the ultrasonic detection device is not needed, and the working efficiency is effectively improved.

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 tubular furnace emergency cut-off valve device with a detection mechanism and a method. The tubular furnace emergency cut-off valve device comprises a mounting box, a trapezoidal block is slidably connected to the interior of the mounting box, a height adjusting mechanism is arranged in the mounting box and located below the trapezoidal block, supporting rods are fixedly connected to the two ends of the top of the trapezoidal block, the tops of the supporting rods are extended to the top of the mounting box, and a fixing plate is fixedly connected between the top of the two supporting rods, the tubular furnace emergency cut-off valve is compact in structure, easy and convenient to operate and high in practicability, the pressure of airflow in a pipeline can be detected in real time by arranging a detection pipe with the detection mechanism on one side of a traditional cut-off valve, meanwhile, a buffer mechanism is matched, emergency cut-off operation can be conducted in time when the pressure of the airflow in the pipeline exceeds the standard, manual real-time observation of the numerical value of a pressure gauge is not needed, manual emergency cut-off operation is not needed either, potential safety hazards of equipment are greatly reduced, and actual application and operation are facilitated.

The invention discloses a medical oxygen production host PLC intelligent integrated control system comprising a power supply, an oxygen analyzer, a touch screen, relays and a program controller. One end of the power supply is provided with a fuse device which is connected with the oxygen analyzer. One side of the oxygen analyzer is provided with a rectification transformer which is provided with a first indicating lamp. The first indicating lamp is connected with the touch screen. The program controller is provided with a second indicating lamp, a third indicating lamp, a fourth indicating lamp and oxygen purity alarm. The relays comprise a first relay, a second relay and a third relay. The second indicating lamp and the third indicating lamp are connected with the first relay. The fourth indicating lamp is connected with the second relay. The third relay and the oxygen purity alarm are directly connected with the program controller which is provided with a carbon potential alerter, a first button switch and a second button switch. The program controller is connected with electromagnetic valves and pneumatic valves of each machine set of the oxygen production host.

The invention discloses a reaction kettle for chemical production based on Internet of Things. The reaction kettle comprises a tank body mechanism, a power mechanism and a data processing transmission mechanism, the tank body mechanism is used for bearing and sealing chemical liquid for chemical production and preventing toxic gas from leaking, the power mechanism is used for stirring and mixing chemicals in the reaction kettle, the data processing transmission mechanism is used for being connected with the Internet of Things, the data processing transmission mechanism comprises a control box and a PLC capable of being connected with the Internet of Things, the control box is fixedly connected to one side of the supporting leg, and the PLC is arranged in the control box. According to the reaction kettle for chemical production based on the Internet of Things, residues on the inner wall of the reaction tank can be cleaned in time, corrosion of the inner wall of the reaction tank due to the fact that chemical materials stay on the inner wall of the reaction tank for a long time is prevented, remote operation is conducted through the Internet of Things, follow-up operation of chemical workers in the whole process is avoided, and the probability that the chemical workers are infected by chemical engineering and cause diseases is reduced.

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.