128results about How to "Reduce shock pressure" patented technology

A method for non-lethal crowd and personal protection. The method includes: firing non-lethal bullets towards a person; and deploying portions on the non-lethal bullets prior to impacting the person to decrease its impact pressure on the person.

The invention discloses a built-in solenoid valve type variable damping shock absorber which comprises a liquid storage barrel. A work cylinder is arranged in the liquid storage barrel. A C-shaped flow cavity is formed between the liquid storage barrel and the work cylinder, and a piston rod assembly capable of sliding relative to the work cylinder is arranged in the work cylinder. The lower end of the liquid storage barrel and the upper end of a combination fork are connected to form sealing, the outer portion of the upper end of the liquid storage barrel is sleeved with an end cover, and anoil seal guide assembly is arranged in the liquid storage barrel. The upper end of the work cylinder abuts against the oil seal guide assembly. The piston rod assembly comprises a hollow piston rod, the upper end of the piston rod assembly stretches out from the upper end of the liquid storage barrel, and a built-in solenoid valve assembly is arranged at the tail end of the piston rod assembly andis connected with the piston rod assembly through a wire. The tail end of the built-in solenoid valve assembly is connected with a piston damping valve, and the work cylinder is divided by the pistondamping valve into a liquid flow cavity A and a liquid flow cavity B. The built-in solenoid valve type variable damping shock absorber has the advantages o f being high in safety, low in fault rate and long in service life. In addition, the built-in solenoid valve type variable damping shock absorber is high in integration degree, high in response speed and good in comfort.

A non-lethal projectile consisting of a solid capsule filled with a flowable payload. The solid capsule comprises a weakened area that ruptures upon impact with a target. The solid capsule also comprises an internal hydrodynamic structure. At the moment of impact, the internal hydrodynamic structure forces the radial movement of the flowable payload, from the center to the periphery, against the weakened area of the solid capsule, facilitating the rupture and reducing the pressure of projectile's point over target's surface.

The invention provides a winding gasket. The winding gasket comprises an elastic metal ring of an inner ring, an arc tooth skeleton ring of an outer ring and a sealing body arranged between the elastic metal ring and the arc tooth skeleton ring. Through the technical scheme, the elastic metal ring of the inner ring, the arc tooth skeleton ring of the outer ring and the sealing body arranged between the elastic metal ring and the arc tooth skeleton ring forms multiple seals, the risk of seal failure is greatly reduced. A multi-sealing type combination of the winding gasket has both a line sealand surface seal mode of the elastic metal ring of the inner ring and the arc tooth skeleton multi-channel line seal mode of the outer ring, and a variety of sealing modes cooperate with each other, the impact pressure of a media on a sealing surface is reduced layer by layer to form a comprehensive seal combination type with higher safety grade, the risk of seal failure is greatly reduced, and the seal performance is improved.

The invention discloses a flow channel outlet structure, particularly relates to the flow channel outlet structure of a flood discharge surface hole of a high arch dam, and belongs to the technical field of civil design construction. The flow channel outlet structure is capable of forming nappe which is fully stretched in a longitudinal direction and has a stable flow state in a transverse direction. The flow channel outlet structure comprises a flood discharge flow channel with a bottom plate formed by an arch dam and a side wall formed by a dam pier, wherein the side wall is linearly shrunk inwards in the longitudinal direction and the tail end of the bottom plate is positioned on the inner side at the tail end of the side wall.

The invention belongs to the field of dust collection equipment, and particularly relates to an open type belt conveying fall point unpowered dust removal system. The open type belt conveying fall point unpowered dust removal system comprises a nose (1), a material chute (2), a dust airflow return pipe (3), a dust hood (4) and a belt sealing cover (5), wherein the material chute (2) is fixedly connected with the nose (1); the open type belt conveying fall point unpowered dust removal system is characterized in that an inlet of the dust airflow return pipe (3) is communicated with an outlet of the dust hood (4); an outlet of the dust airflow return pipe (3) is communicated with an inner cavity of the material chute (2); the belt sealing cover (5) is positioned at the upper part of a belt (6); a material outlet of the material chute (2) is communicated with the belt sealing cover (5); a dust collection opening at the lower part of the dust hood (4) is communicated with the belt sealing cover (5); and an open type dust collector (7) is fixedly arranged at the upper part of the nose (1). The system is simple in structure, the external energy of the system is not required, and the system is water-saving, has no secondary environment pollution, desirable in dust collection effect, and convenient to use and install.

The invention discloses a leakage stoppage device used on naval vessels and a schematic diagram of the leakage stoppage device. The leakage stoppage device has the advantages that impact pressure of water is reduced, no power supplies are needed, and the device is easy to operate, safe and reliable, can achieve fast leakage stoppage no matter what difference exists between sizes and shapes of water leakage holes and can be operated by just one person. A sealing plate is arranged on the upper portion of a square leakage stoppage device seat body, small sealing-plate holes are formed in the left side and right side of the sealing plate, and sealing-plate hooks are arranged above the small sealing-plate holes and are fixed to the sealing plate through screws. One end of each screw penetrates through the center of the corresponding sealing-plate hook and the corresponding small sealing-plate hole and is fixed to the leakage stoppage device seat body, and the other end of each screw is provided with a disc bolt in a bolting mode, and protruding circles are arranged below the disc bolts in a one-to-one correspondence mode and are in running-in relations with the sealing-plate hooks. The sealing plate is firmly hung to the protruding circles below the disc bolts through the hooks. Controllable strong magnets are arranged below the left side and the right side of the leakage stoppage device seat body respectively.

The invention discloses a continuous pressure-relief deslagging system and a continuous pressure-relief deslagging method of a liquid-state pressure-boosting deslagging gasifier, and is used for solving the problems that an existing deslagging system is complex in technical process, complicated to operate, high in equipment investment and poor in reliability. The method comprises the following steps: carrying out water-bath chilling on high-temperature and high-pressure slags which are generated by the pressure-boosting gasifier and fall into the bottom of the pressure-boosting gasifier; then feeding the high-temperature and high-pressure slags into a slag crusher for crushing, wherein the crushed high-pressure slags flow into a pressure-reducing pipe along with water; further carrying out pressure reduction on a mixture which contains high-pressure gas and a small amount of fine slag water and is generated when a slag-water mixture passes through the pressure-reducing pipe for pressure relief; then sending the slag-water into a gas discharging tank and carrying out washing and gas-liquid separation; feeding the slag-water mixture subjected to pressure relief into a slag collecting tank; and finally, discharging into a slag conveyor, wherein the discharging gas at the top of the inside of the gas discharging tank is sent to a torch while the slag water at the bottom of the inside of the gas discharging tank is sent into the slag collecting tank. The method disclosed by the invention is simple and reliable in process, flexible, simple and convenient to operate and low in running cost, and realizes energy conservation and consumption reduction. The system disclosed by the invention is simple, low in equipment investment, high in reliability and long in service life.

The invention discloses a method and device for realizing multicast demanding under a ring network environment, and relates to the technology of video control. The method disclosed by the invention comprises the following steps: starting the PIM reverse demanding mode of a multicast source interface in a multicast source switch; under the PIM reverse demanding mode, sending a first IGMP reporting message to a node switch in the same ring network by the multicast source switch, and determining a two-layer multicast forwarding table according to the first IGMP reporting message by the node switch; when no output interface matched with the multicast group number of a multicast source exists in the multicast forwarding table, sending a first IGMP leaving message to the node switch by the multicast source switch, updating the two-layer multicast forwarding table according to the first IGMMP leaving message by the node switch, and isolating a multicast video stream sent by the multicast source. According to the invention, arbitrary flooding of video multicast messages can be rejected in the video monitoring ring network, so that the link bandwidth is greatly reduced, and the shock pressure of the multicast source port of the multicast source switch is reduced.