129results about How to "Reduce shock pressure" patented technology

The present invention relates to a centrifugal grinding mill comprising a vertical axis of revolution (1), a nutating axis (2) intersecting axis (1) at a point of nutation symmetry (3), a grinding chamber (4) symmetrical about axis (2) connecting with feed passage (5) at its upper end and having discharge openings (6) of a screening element (26) located within a plane area aligned normal to, symmetrical with, and intersected by the axis (2), and adjacent the plane containing the maximum diameter of the grinding chamber (4).

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.

A method for controlling rock drilling and a rock drilling arrangement having at least one feed channel of a feed actuator provided with a restrictor, which causes a pressure drop if the penetration rate increases and, consequently, a flow through the restrictor increases. A pressure difference and an increase in the penetration rate can be detected by sensing the pressure before the restrictor and after the restrictor. When the feed rate increases, a hydraulic system is arranged to decrease percussion pressure.

The invention discloses a magneto-rheological damping tuned damper for super-high-rise buildings. The magneto-rheological damping tuned damper for the super-high-rise buildings mainly comprises a magneto-rheological tuned mass block, a leaded steel lamination damper, a rigid force transmitting plate, a floor embedded steel plate, a field regulator, a floor and a building main body framework. The magneto-rheological tuned mass block is adopted as a variable-damping tuned mass damper. The working principle of the magneto-rheological tuned mass block is that a plurality of resistance reducing sliders are arranged in the magneto-rheological tuned mass block, and the resistance reducing sliders slide in magneto-rheological fluid to eliminate shock of the super-high-rise buildings caused by earthquakes or strong wind; and the outer portion of the magneto-rheological tuned mass block is connected with the leaded steel lamination damper for reducing impact pressure of the magneto-rheological fluid on the structure. The damper has the advantages of good structural force performance, easy implementation, good stability, good shock absorption effect, good safety and the like. A magneto-rheological system has low power consumption, small size and obvious shock absorption effect, and is beneficial to greatly reducing the cost of the tuned mass dampers for high-rise buildings, super-high-rise buildings and tall structures.

The invention relates to a valve part for a control valve for control of pressure medium flows, comprising a cylindrical valve housing (2) with a first cylinder sleeve section (35) running in the axial direction and a first cylinder base section running perpendicular to the axial direction, defining a valve housing chamber (4) open at one end, wherein the first cylinder sleeve section is provided with a first working connector (A), a second working connector (B) and a pressure connector (P) which each open out in the valve housing chamber and a cylindrical control piston (3) housed in the valve housing chamber such a as to move axially with a second cylinder sleeve section running in the axial direction and a second cylinder base section running perpendicular to the axial direction, defining a control piston chamber which is open to one side, wherein the second cylinder sleeve section, adjacent to the second cylinder base section is provided with a radial outer connection (T) opening in the control piston chamber and the control piston is designed such that the working connections may be made with a fluid connection to pressure connector and the outlet connector by axial displacement of the control piston. The valve part is characterised in that the outlet connection of the control piston has at least one inclined opening, the wall direction of which has an angle of less than 90 DEG to the axial direction.

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 aims to provide a heartbeat protocol method and a device based on lease. The method comprises the following steps: sending a heartbeat request to a server in the lease period, and receiving a heartbeat request response from the server; and if the heartbeat request response is abnormal, determining the retry sending interval based on an inverse exponential back-off algorithm, and sending a retry heartbeat request to the server after the retry sending interval until the lease expires or the corresponding heartbeat request response is normal. In the early stage of retry heartbeat requests, two adjacent retry heartbeat requests can be sent at a large sending interval, which reduces the impact pressure of heartbeat requests on network nodes and the server. In the late stage of retry heartbeat requests, the sending interval of retry heartbeat requests is shortened, which enables retry heartbeat requests to be sent at higher frequency. Therefore, the success probability of recovery from network failure is increased, the stability of the network is guaranteed, and the network pressure is reduced.

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.

A refrigeration apparatus includes a refrigerant circuit in which a compressor, a condenser, a liquid receiver, a first opening-and-closing valve, an expansion valve, and an evaporator are connected sequentially by pipes and through which refrigerant circulates. The refrigerant is HFO1123 or a refrigerant mixture containing HFO1123. A ratio of a refrigeration capacity to an opening area of the first opening-and-closing valve is within a range of 0.25 to 0.6 (kw / mm2).

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 convenient-to-mount hydraulic pipeline repair device. The convenient-to-mount hydraulic pipeline repair device comprises a mounting plate, wherein the two sides of the top surface of the mounting plate are symmetrically and fixedly equipped with U-shaped handles separately. According to the device disclosed by the invention, an arc-shaped plate and a cover body are detachably arranged, so that the cover body can jack the arc-shaped plate to a pipeline damaged part after four hooks are hooked onto a pipeline, and therefore, while bearing impact force of liquid sprayedout from the pipeline damaged hole, the arc-shaped plate transmits the force onto the pipeline through the four hooks, impact pressure borne on a worker is small, and the arc-shaped plate is mounted at the pipeline damaged part conveniently; moreover, a water drainage hole is formed in the arc-shaped plate, so that liquid sprayed out from the pipeline damaged hole at high speed can be discharged from a water drainage tube, and therefore, force of impacting the arc-shaped plate by liquid is reduced, and mounting work of the arc-shaped plate is convenient; meanwhile, liquid sprayed out from thepipeline damaged hole at high speed can be guided to other parts through the water drainage tube, so that a great deal of liquid is not generated on a working site, and therefore, a worker is prevented from being in environment with a great deal of liquid for a long time.

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.

The invention relates to a laser grinding wheel trimming device with double tangential liquid column flows. The laser grinding wheel trimming device comprises computer control equipment (4), a control operating platform (5), a fiber laser device (6), a laser ablation head (7), a three-dimensional moving platform (8), an ultrahard abrasive grinding wheel (9), a grinder (10), a lower tangential thin water pipe (11), a lower tangential liquid column pressure controller (12), a right tangential thin water pipe (13), a laser beam (14), the lower tangential liquid column flow (15), the right tangential liquid column flow (16), a right tangential liquid column pressure controller (17) and a focusing lens (18). The auxiliary double-tangential-liquid-column-flow device is provided, so that the energy accumulation effect is suppressed, and energy balance in the trimming process is improved. In addition, a liquid film is formed on the surface of a grinding wheel, so that heat loss of an evaporation effect is reduced, the use ratio of laser is improved, and surface quality of the trimmed grinding wheel is improved.

The invention relates to an aneurysm plugging device, which comprises a supporting part and a plugging part. The supporting part comprises a supporting frame, and the diameter of the bottom end of the supporting frame is smaller than the maximum diameter of the supporting frame; the plugging part comprises a framework, and the framework is fixed to the bottom end of the supporting frame. Compared with an existing spring ring packing method, the blood can be immediately prevented from entering the aneurysm, the effects of improving hemodynamic force at the aneurysm neck and promoting aneurysm healing are achieved, and treatment of ruptured aneurysm is particularly facilitated. Compared with an existing dense net stent or covered stent intervention method, the method only aims at covering the arterial aneurysm neck opening, the blood flow of collateral vessels is not affected, and the problem of local ischemia caused by the dense net stent or covered stent intervention method is solved.

The invention discloses a low-impact combined process nozzle for realizing uniform spraying. The low-impact combined process nozzle comprises a first plate body and a nozzle main body which are oppositely arranged to define a cavity, wherein the nozzle main body is provided with a liquid supply channel for being communicated with the cavity, the first plate body is provided with a plurality of liquid spraying holes communicated with the cavity, the first plate body is arranged sideways, the nozzle main body is arranged on the first surface of the first plate body, the second surface of the first plate body is provided with a second plate body, a part, close to the lower end, of the second surface is sunken towards the first surface to form a third surface parallel to the first surface, the lower half section of the second plate body is opposite to the third surface, and a certain distance is formed between the lower half section of the second plate body and the third surface so as to define a spraying slit, the lower end of the second plate body extends out of the bottom surface of the nozzle main body, and the plurality of liquid spraying holes penetrate through the first surface and the third surface. The combined process nozzle not only can reduce the impact pressure of spraying liquid on the spraying surface, but also can realize the uniform spraying.

The invention discloses a novel buffering device for a plunger pump, and belongs to the technical field of hydraulic equipment. The novel buffering device for the plunger pump comprises a ball body, a front tapered pipe and a rear tapered pipe; openings of the tapered pipes respectively pass through the ball body in opposite directions to form an inlet and an outlet; a cutting opening is formed in the middle of the tapered pipe; the cutting opening above the inlet is in a vertical angle, and the angle of the cutting opening above the outlet inclines toward the inlet; when in work, liquid flows into the tapered pipes through the inlet; when the tapered pipes are full of the liquid, the liquid flows into the wall body through the inlet cutting openings in four sides of the tapered pipes; when the wall body is full of the liquid, the liquid flows into the outlet tapered pipe through the outlet cutting incision and then flows out. The novel buffering device for the plunger pump is simple in structure and reasonable in design; the flowing speed and direction of the liquid are changed through the combination of the tapered pipes and the ball body, and thus the problem of non-uniform flow rate and speed of the liquid can be solved; the impact pressure and speed are reduced to some extent; the function of effective buffering is reached; the pulsing phenomenon is removed; the service life of the device is prolonged; the potential risk is removed.

An automotive bumper comprises a bumper body and a locating frame. A buffering space is formed between the bumper body and the locating frame. Three to five connecting rods are arranged in the buffering space. The bumper body is fixedly mounted on the locating frame through the connecting rods. The automotive bumper is simple, compact and reasonable in structure, convenient and fast to assemble, reliable in connection and capable of reducing impact pressure from the outside effectively and better playing a role in buffering, the impact resistance of the automotive bumper is improved, the collision strength can be lowered to the minimum, the personal and property safety is guaranteed effectively, the reliability of automobile running is improved greatly, and the automotive bumper is easy to use and popularize.

The invention discloses a garden spiral irrigation device with an adjustable spraying range. The device comprises a device body; the device body is mainly composed of a motor, a sliding column and a base, the motor is fixedly connected to the surface of the device surface, and a push rod is arranged on the motor; the sliding column is rotatably connected to the upper end of the push rod, a ball bearing is fixedly connected to the upper end of the sliding column, and telescopic rods are hinged to the outer circle of the ball bearing; a water outlet pipe is arranged in the sliding column in a sleeved mode, the outer portion of the water outlet pipe is connected to the inner wall of the sliding column in a sliding mode, a sliding rail is fixedly connected to the upper surface of the device body, and the sliding rail is connected with the sliding column in a sliding mode; a flow divider is fixedly connected to the top of the water outlet pipe, a water inlet pipe is arranged on the lower portion of the water outlet pipe, and the water inlet pipe is fixedly connected to the surface of the device body. According to the garden spiral irrigation device, spray nozzles are moved in an up-down spiral mode constantly, then spiral watering is achieved, spraying is more even, the irrigation equalization of flowers and trees is greatly improved, a flow adjustment valve which is arranged on the device can be adjusted on the yielding ground so that the water flow can be slower and the impact pressure can be smaller, and water loss and soil erosion are effectively prevented.

The invention discloses a self-adaptive valve bank for a rock drilling machine. The self-adaptive valve bank comprises a first sequence valve, a first hydraulic operated directional valve, a shuttle valve and the like. The self-adaptive valve bank for a rock drilling machine is simple in structure and high in reliability, the rock drilling machine and a rock drilling tool are protected, and meanwhile the hole-forming efficiency is improved.

The invention discloses a structure for preventing and reducing the hazard of a retention air mass in a deep regulation and storage tunnel. The structure comprises a plurality of baffle assemblies which are arrayed at intervals in the axial direction of the deep tunnel top wall; the baffle assemblies are mounted at the top of the deep tunnel pipe wall, and each baffle assembly comprises a first fence-type baffle and a second fence-type baffle; each type of fence-type baffles are perpendicular to the axial direction of the tunnel and comprise a plurality of parallelly-arrayed grids and flow channels located between the grids; and the first grids and the second grids are arranged in a staggered mode in the axial direction of the deep tunnel to block moving air. Through the baffle assembliesarranged at the top of the deep regulation and storage tunnel, on the one hand, the moving air mass can be subjected to detour flow deceleration to lower the impact pressure of the retention air mass;on the other hand, the atmospheric mass at the top of the deep tunnel can be divided into small air masses so as to avoid formation of the harmful large-size retention air mass; and the two aspects are combined, the effects of preventing and reducing the hazard of the retention air mass in the deep regulation and storage tunnel are achieved finally.

The invention discloses a wind-light-heat combined complementation device with a pre-adjusting plate frame structure. The device comprises a stool and a middle support rod; a sleeve is mounted above the stool; a blade plate is fixed on the outer wall of the sleeve; a ring rod is mounted above the middle support rod; and the middle support rod penetrates out from the internal of the sleeve. Througharrangement of the sleeve, the wind-light-heat combined complementation device with the pre-adjusting plate frame structure enables the wind power acting process to achieve a certain combined actingeffect on the solar acting process; the sleeve cooperates with the end part of the upper side of the stool; the sleeve is fixedly connected with the middle support rod; under the effect of wind power,the blade plate moves along with wind to urge rotation of the sleeve, so that automatic and autonomous rotating power is provided to whole equipment, and differentiated utilization is performed on the wind power; and blade wheels are arranged on the front and back side surfaces of the support rod, so that the utilization degree of the support rod and the blade plate to the wind power can be increased, and the wind power generation efficiency is improved.

The invention discloses a composite structure energetic container, which includes a hollow spherical shell with openings at the upper end and lower end. The shell consists of: an inner shell, an outer shell and a buffer device fixed between the inner shell and the outer shell. Specifically, the buffer device is a steel plate with a continuous wavy section, the wave bottom of the wavy steel plate is in fixed connection with the inner shell, and the wave top of the wavy steel plate is in fixed connection with the outer shell. According to the invention, through setting of the composite structure shell, the compression resistance and bearing strength of the energetic container shell are enhanced, the surge pressure of the reaction moment is buffered, and the life and the quality of the energetic container are improved. In addition, the composite structure energetic container provided by the invention also has the advantages of convenient installation, high reliability, easy installation and maintenance, etc., greatly improves the service life of the energetic container, and meets the needs of mass production.

The invention discloses liquid auxiliary treatment-based hot ore crushing equipment. The equipment comprises a crusher body, wherein a crushing roll shaft is arranged in the crusher body; a plurality of crushing end teeth which extend along a direction vertical to an axis of the crushing roll shaft are arranged on the crushing roll shaft; a plurality of auxiliary crushing end teeth are arranged on the inner wall of the crusher body; a plurality of pressure sensors are arranged on the crushing end teeth and the auxiliary end teeth; a plurality of liquid injection chambers are arranged in the crushing roll shaft; a cutting liquid slot which is communicated with the liquid injection chamber is formed outside the crusher body; a pressure pump is arranged in each liquid injection chamber; and auxiliary cutting nozzles are connected with the pressure pumps. According to the liquid auxiliary treatment-based hot ore crushing equipment, high-pressure liquid flow injection can be carried out on ores through the liquid injection chambers in the crushing roll shaft in the working process of the hot ore crushing equipment, so that the ores can be crushed under the cutting of the liquid flows, and then the ore crushing efficiency and precision can be effectively improved.

The invention discloses an anti-impact mechanism for a heat exchanger. The anti-impact mechanism comprises a first anti-impact plate mounted at a steam inlet of the heat exchanger; a plurality of rows of heat exchange tubes are arranged inside the heat exchanger in the length-wise direction; baffle plates are vertically disposed in the inner wall of the heat exchanger; a partition is disposed in the center of the heat exchanger in the length-wise direction; the baffle plates are fixed between the inner wall of the heat exchanger and the partition; a second anti-impact plate leading to the steam inlet is perpendicularly arranged on the corresponding baffle plate; one end of the second anti-impact plate is fastened to the corresponding baffle plate; a steam flow gap forms between the other end of the second anti-impact plate and the outlet end of the steam inlet. The anti-impact mechanism is simple in structure; after assembly, the anti-impact plates, the partition and the baffle plates can be jointly mounted inside a heat exchanger housing; assembly is convenient and fast; steam impact pressure can be reduced by the anti-impact plates without perforating the anti-impact plates; production cost is also reduced.