11 results about "Impact pressure" patented technology

The utility model provides gun bore radial impact load experiment equipment, which relates to the technical field of impact dynamic model devices, and comprises a support frame, a pneumatic loading assembly, an acceleration conduit, an impact rod, an energy collection assembly and an impact pressure reverser, the pneumatic loading assembly is connected with the top of the support frame; the acceleration conduit is connected below the pneumatic loading assembly and is located in the support frame; the impact rod is connected into the acceleration guide pipe in a sliding manner; the energy collecting assembly is connected with the bottom of the supporting frame, the energy collecting assembly and the pneumatic loading assembly are oppositely arranged, and the upper portion of the energy collecting assembly makes contact with a test piece; the impact pressure reverser is connected with a blast hole formed in the test piece and is opposite to the bottom end of the impact rod. The utility model solves the problems in the prior art that the loading of radial impact load is difficult to realize and the equipment is easy to damage or the experimental data is inaccurate.

The application discloses an integrated buffer seal engineering machinery oil cylinder and relates to the technical field of oil cylinders, which comprises a cylinder body, a piston and a piston rod, a buffer seal assembly is arranged outside the piston, the buffer seal assembly comprises a buffer column arranged at the front end and two lip-shaped sealing rings, a base is arranged at the bottom of the cylinder body, a buffer groove is formed in the base, and a throttle hole is formed in the base. The integrated design of the buffer and the sealing structure achieves multistage attenuation of impact load, dynamic adjustment of sealing force and self-adaptive control of oil flow, the cylinder hydraulic pressure dynamically adjusts the throttle hole diameter, cooperates with the multistage buffer structure, and reduces the impact pressure; meanwhile, the temperature self-adaptive flow control system can intelligently adjust the flow rate according to the change of the hydraulic oil viscosity, actively enhances the sealing tightness under high-temperature working conditions, effectively inhibits leakage, automatically optimizes the starting parameters in a low-temperature environment, and improves the equipment response speed.

The invention provides a diesel oil beam drop point position dynamic detection method and device and a medium, belongs to the technical field of internal combustion engine fuel injection detection, and aims at a petal-shaped combustion chamber, micro pressure sensors are reasonably arranged on the inner surface of the petal-shaped combustion chamber to form a detection grid, and the target oil beam drop point position is determined according to parameters of an oil injector. A pressure sensor signal is collected and preprocessed, an oil beam impact pressure field is constructed, and coordinates of a high-pressure area are extracted from the oil beam impact pressure field to calculate the actual oil beam drop point position. And comparing the actual drop point position with the target position to obtain a deviation, and finally averaging the deviation of the plurality of oil beam drop point positions to obtain an average oil beam deviation. By arranging the sensor, oil beam drop point information can be accurately obtained, and the deviation condition between the actual oil beam drop point and a target is mastered. Under the complex working condition of the engine, oil beam injection abnormity can be found in time, and reliable basis is provided for improving engine performance and stability.

A pitot system includes a body including an inlet port and a hermetically sealed chamber positioned in the body. The hermetically sealed chamber includes a movable barrier in fluid communication with the inlet port. The pitot system also includes one or more first sensors configured to provide first signals, to a computer, based on deflection of the movable barrier due to impact pressure exerted against the movable barrier by fluid in the body. The first signals correspond to a stagnation pressure of fluid that entered the body via the inlet port.

This invention discloses a method for calculating the impact pressure of an open cavity entering the water under wave conditions, relating to the field of marine engineering technology. It is used to predict the entry process of an open cavity into the water. The method includes constructing a geometric model of the open cavity, constructing a wave field, simulating the motion of the target cavity entering and within the wave field, constructing the time-domain motion equation of the target cavity, solving the time-domain motion equation of the target cavity using numerical integration, calculating the hydrostatic pressure component, the impact pressure component, the air wave pressure component, and the wave-induced pressure component of the target cavity, and decoupling the calculation of the impact pressure based on these four sub-components. This invention improves the accuracy of calculating the impact pressure distribution and time history characteristics of an open cylindrical cavity under wave conditions by establishing a coupled dynamic model of the wave field and the entry process of the open cavity through a multi-phase coupling mechanism.

A blockage detection system for detecting aircraft probe blockages includes a processor, a communication device, and computer-readable memory. The computer-readable memory encoded with instructions that, when executed by the processor, cause the system to execute a blockage detection algorithm. The processor receives a static pressure and an impact pressure from one or more aircraft probes. The processor converts the static pressure and the impact pressure to a correlating variable, via the blockage detection algorithm. The processor evaluates the correlating variable, via the blockage detection algorithm, to determine if a value of the correlating variable exceeds a threshold indicative of a blockage. The processor outputs a blockage indicator, to a receiving system in response to the correlating variable exceeding the first threshold indicative of a blockage. The processor is further able to determine if the blockage has cleared by reference to an external comparative pressure measurement.

The utility model provides a boss-shaped oil gas seal device which comprises an undercarriage body, the undercarriage body comprises an outer cylinder, a piston rod and a supporting ring, the outer cylinder is arranged on the peripheral side of the piston rod in a surrounding mode, the supporting ring is arranged between the outer cylinder and the piston rod in a clamping mode, and the piston rod is arranged on the supporting ring. The supporting ring is fixed to the end of the outer cylinder, and a rubber ring groove is formed in the side, close to the piston rod, of the supporting ring. The sealing ring assembly is installed in a rubber ring groove of the supporting ring in a nested mode and makes contact with the outer surface of the piston rod, the sealing ring assembly comprises a boss-shaped sealing ring, the boss-shaped sealing ring is provided with a main body part and a protruding part, the main body part is embedded in the rubber ring groove, and the protruding part is embedded in the rubber ring groove. And the lug boss is in contact with the outer surface of the piston rod. The boss-shaped oil-gas sealing device is suitable for oil-gas sealing of an aircraft landing gear buffer, meets the requirements of oil sealing and gas sealing under impact pressure, and improves the sealing effect and reliability of the boss-shaped oil-gas sealing device.

The invention discloses a pitot static instrument for determining the airspeed of an aircraft. The pitot system includes a body including an inlet port and a sealed chamber positioned in the body. The sealed chamber includes a movable barrier in fluid communication with the inlet port. The pitot system also includes one or more first sensors configured to provide a first signal based on a deflection of the movable barrier due to an impact pressure exerted on the movable barrier by a fluid in the body. The first signal corresponds to a stagnation pressure of fluid entering the body via the inlet port.

The application discloses a kind of real-time autonomous deforming actuators.Executed for receiving external impact pressure in turn delivery, executor includes shell, shortening adjustment structure in shell, lengthening adjustment structure and respectively located transmission rod, adjusting plate etc.at the front and rear end of shell;Transmission rod is pressed into drive pressure change and is transmitted to shortening adjustment structure, lengthening adjustment structure to carry out height support adjustment by adjusting cavity.This application can automatically shorten and adjust the length of executor by the ingenious design and cooperation of mechanical structure, cavity, gas and fluid, and automatically realize without manual intervention, without external power source.

The utility model provides an anti -impact pressure structure and static level gauge, including protection case, is seted up protection cavity on the protection case, four corner places of protection cavity inside all are equipped with angle plate guide rail, install static level gauge body between four angle plate guide rails, the corner side of static level gauge body and be located between angle plate guide rail protection cavity inner wall are connected fixed through connecting piece, connecting piece will static level gauge body limit in protection cavity, the top of the side of protection case is equipped with the installation cavity, install the board in the inside of installation cavity, the top of install the board with a plurality of impact -resistant seat is connected, the utility model has the beneficial effect as follows, the utility model can be installed in the construction site operation, exempts from the destruction of high altitude falling object, can when being impacted by high altitude falling object, can buffer the impact force, can still change the damaged part when the damaged part of the impact -resistant part happens damage.

The invention belongs to the technical field of aviation ground tests, and particularly relates to a system and method for measuring an impact pressure peak value in an oil receiving process, and the system comprises a constant-pressure oil source system, an oil receiving assembly, an impact pressure sensor, a dynamic measuring instrument, a test oil tank, and a test controller. The impact pressure sensor is connected with the constant-pressure oil source system, one end of the oil receiving assembly is connected with the impact pressure sensor, and the other end is connected with the test oil tank. One end of the dynamic measuring instrument is electrically connected with the impact pressure sensor, and the other end is electrically connected with the test controller. The test controller is electrically connected with the constant-pressure oil source system, and the test controller can control the output pressure of the constant-pressure oil source system. Through organic combination of'accurate measurement 'and'flexible simulation', a complete closed-loop test solution is formed. The technical bottleneck that real simulation and measurement cannot be achieved in the prior art is overcome, and qualitative leap is brought to test efficiency, safety and data value.