18results about How to "Prevent pressure" patented technology

The invention discloses a hydraulic walking control system and method and a high-altitude operation vehicle. The system comprises a walking pump, a first flow distributing and collecting valve, a second flow distributing and collecting valve and all walking motors. A port A of the walking pump is connected with a third port of the first flow distributing and collecting valve and a third port of the second flow distributing and collecting valve, and a port B of the walking pump is connected with a port B of the left front walking motor, a port B of the left rear walking motor, a port A of the right front walking motor and a port A of the right rear walking motor. A fourth port of the first flow distributing and collecting valve is connected with a port A of a left front walking motor, and a second port of the first flow distributing and collecting valve is connected with a port A of a left rear walking motor; a fourth port of the second flow distributing and collecting valve is connected with a port B of the right front walking motor, and a second port of the second flow distributing and collecting valve is connected with a port B of the right rear walking motor. The problem that the walking effect is affected due to the fact that flow and pressure change is caused by slipping during walking is solved.

Provided are a battery cell, a battery, an electrical apparatus, and a method and device for manufacturing a battery cell. The battery cell includes a case (110), an end cover (120), an electrode assembly (130) and a solder (140), the case (110) has an accommodating cavity (111) and an opening at one end; the end cover (120) is connected to the case (110); the electrode assembly (130) is provided in the accommodating cavity (111), the electrode assembly (130) has a first tab (131), and the first tab (131) faces the opening; the solder (140) is provided between the end cover (120) and the first tab (131) and connects the end cover (120) and the first tab (131); an insulating member (150) is also provided between the end cover (120) and the first tab (131), an insulating cavity (151) is provided on the insulating member (150), a feed port (152) is provided on one side of the insulating cavity (151), and the feed port (152) faces the solder (140).

The utility model discloses a kind of gas-liquid two-phase flow wide gas-liquid ratio and wide-range measurement system, belong to oil-gas field multiphase flow measurement technical field, including flow computer, separation component, fluid inlet pipeline and fluid outlet pipeline, the separation component is communicated with fluid inlet pipeline, liquid level meter and inlet pressure gauge are equipped on the separation component, gas phase pipeline and liquid phase pipeline respectively communicated with its inside are equipped on the separation component, liquid level control mechanism is equipped in the separation component, the liquid level control mechanism is used to close separation component and gas phase pipeline passage when liquid level in separation component rises, the one end of gas phase pipeline and liquid phase pipeline away from separation component is communicated with fluid outlet pipeline, gas phase flowmeter is equipped on the gas phase pipeline, liquid phase flowmeter and liquid path valve are equipped on the liquid phase pipeline.The utility model can select different measurement mode according to different working conditions, ensure the accuracy of measurement.

The utility model discloses a back spray piece and back spray assembly, back spray piece includes the body, switching part and first reset part. The body is equipped with the water inlet hole and is suitable for with the water outlet hole of water inlet hole intercommunication, and the back spray water hole is suitable for along the first direction parallel to the horizontal plane and / or the direction of inclination to the first direction and washes to the back plate of human body, switching part is suitable for the movement between the first position and second position, and switching part is in the first position, makes water inlet hole and back spray water hole intercommunication, in the second position, makes water inlet hole and back spray water hole not intercommunication, thereby realizes the switching of waterway. The both ends of first reset part act on the body and switching part respectively, and are suitable for energy storage when switching part moves to the first position, and release energy to drive switching part to reset to the second position when back spray water hole does not water, prevent the next time opening, and back spray water hole directly water, lead to the splash problem of opening, and simultaneously, it can also assist switching part to switch to the second position, and it is more labor-saving when switching.

The utility model discloses a driving device for a rail robot, which comprises a mounting frame, guide wheels and a bearing wheel are arranged at the upper end of the mounting frame, the guide wheels are positioned on two sides of the bearing wheel, the guide wheels and the bearing wheel are positioned on a T-shaped rail, a driving motor is mounted on the side surface of the mounting frame, a power output end of the driving motor is connected with a driving wheel, and a power output end of the driving motor is connected with a driving motor. The driving wheel is located on the lower surface of the T-shaped rail, and a spring adjusting mechanism is further arranged on the side face of the mounting frame and used for adjusting the pressing force between the driving wheel and the T-shaped rail. The utility model has the beneficial effects that: a worker adjusts the compression amount of the spring by adjusting the spring adjusting mechanism so as to adjust the pressing force of the T-shaped track, when the driving motor drives the driving wheel to pass through an obstacle on the T-shaped track, the spring as a suspension of the driving wheel is compressed, and when passing through the obstacle, the spring resets, so that the driving wheel can be driven to rotate. Therefore, the driving wheel moves up and down, and consequences caused by too large or too small pressing force are avoided.

This utility model relates to the field of bridge engineering construction technology and discloses a bridge pile grouting device for bridge construction, including a bridge pile grouting device body. A sealing disc is movably connected to the bottom of the bridge pile grouting device body, and several fixing blocks are fixedly connected to the outside of the bridge pile grouting device body. A ring is fixedly connected to one side of the fixing blocks, a mud-shoveling block is slidably connected to one side of the ring, and a support plate is fixedly connected to one side of the mud-shoveling block. Before the cement is poured, the mud-shoveling block slides on the surface of the ring, which can drive the support plate to move. At the same time, by adjusting the bolt and the threaded connection inside one end of the support plate, the limiting disc can be moved towards one end of the hollow tube, thereby facilitating the clamping and fixing of the hollow tube. This avoids the worker holding the hollow tube for a long time and pressing against the sealing disc, thus bringing convenience to the worker's operation.

The invention relates to the technical field of aerospace equipment, in particular to a propellant adjusting device which comprises a main shell, an adjusting part and a driving part, the main shell is provided with a working cavity, an inlet and an outlet, the inlet and the outlet are communicated with the working cavity, the inlet and the outlet are communicated through a communicating cavity, and the main shell is provided with a sliding part in the working cavity; the adjusting part comprises an adjusting head and a penetrating rod which are connected with each other, the penetrating rod penetrates through the sliding part in a sliding mode, the penetrating rod can slide relative to the sliding part and adjust the opening degree of the communicating cavity, a first movable sealing part and a second movable sealing part are arranged between the penetrating rod and the sliding part, and the first movable sealing part and the second movable sealing part are arranged in the sliding direction of the penetrating rod in a spaced mode; a discharging cavity is formed between the penetrating rod and the sliding part and located between the first movable sealing piece and the second movable sealing piece, the sliding part is provided with a discharging hole communicating with the discharging cavity, and the driving piece is used for driving the penetrating rod to slide. According to the propellant adjusting device provided by the invention, the sealing performance between the main shell and the adjusting part is further improved, and reliable supply of the propellant is ensured.

The utility model belongs to the technical field of shoe soles, and particularly relates to an air cushion shoe sole with a flowing air chamber, which comprises a midsole and an outsole, a plurality of matching holes are arranged at the bottom of the midsole, a plurality of U-shaped grooves are arranged among the matching holes, and anti-skidding bumps and air cushion bumps are arranged at the bottom of the outsole. The insole and the outsole are matched to form an air chamber, the matching holes are hemispherical, and the air cushion protruding blocks are higher than the anti-skid protruding blocks. Automatic adjustment of air pressure between the air chambers is achieved through the communicating grooves, overlarge local pressure intensity is avoided, foot impact peak pressure is reduced, and joint loads are relieved.

The utility model discloses a connector pressure relief assembly allowing under-pressure operation. The connector pressure relief assembly comprises a plug part and a liquid collection part, the plug part comprises a plug shell, a sealing block and a spring, the sealing block and the spring providing elastic force for the sealing block to enable the sealing block to be located at the front end of the plug are arranged in the plug shell, and a center hole axially penetrates through the center of the left end of the sealing block; the liquid collecting part comprises a liquid collecting shell and an end cover shell, the end cover shell is located at the tail of the liquid collecting shell, the liquid collecting shell is connected to the rear end of the plug shell, a piston rod is axially arranged in the liquid collecting shell, the tail end of the piston rod penetrates through the end cover shell, and by pushing and pulling the rear end of the piston rod, a liquid collecting cavity with the variable size is formed in an inner cavity of the liquid collecting shell. During liquid discharging, the pressure relief assembly is in a disconnected state, the piston rod is pushed forwards, the cavity in the pressure relief assembly is squeezed, and the medium is discharged from the center hole. During liquid drainage, the liquid collecting shell does not need to be unscrewed, the piston rod is directly pushed and pulled, media in the cavity are drained through the center hole, and liquid drainage is more convenient.

The present invention relates to a clamping mechanism of a pliers body, comprising: a connecting portion; and at least two clamping portions circumferentially arranged on the side wall of the connecting portion, which are used to clamp a workpiece; wherein the workpiece comprises a pliers body and a hook claw extending outward from one end of the pliers body, and a shoulder with an arc-shaped surface is formed at a portion where the hook claw is integrally combined with the pliers body; the clamping portion comprises a first clamping module corresponding to the pressed shoulder and a second clamping module for clamping the other end of the workpiece, a first clamping jaw is pivotally connected to the first clamping module, and the first clamping module and the second clamping module are driven to close together by a driver in the clamping portion, and the first clamping jaw is driven to rotate to adjust the first clamping jaw to fit on the shoulder, and maintain the contact position of the first clamping jaw with the workpiece to ensure the gripping effect of the first clamping jaw. The clamping mechanism has a simple structure and is easy to use.

This invention relates to the field of oil and gas extraction technology, and discloses an ultra-high temperature and ultra-high pressure acid-rock reaction simulation device and experimental method. The device includes a reaction vessel, an acid inlet pipe, a high-pressure gas inlet pipe, and a connecting pipe. A magnetic coupler is fixedly installed at the top of the reaction vessel. A rotating shaft is rotatably connected inside the reaction vessel. A disk is fixedly connected to the top of the rotating shaft. An auxiliary component is fixedly installed inside the rotating shaft. The auxiliary component includes an air bladder. A gas guide pipe is fixedly installed inside the air bladder. A fixed column is fixedly connected to the end of the gas guide pipe away from the air bladder. Multiple telescopic plates are slidably connected inside the fixed column. An elastic element is fixedly installed at the end of the fixed column away from the reaction vessel. The telescopic plates automatically extend as the rotating shaft rotates, individually agitating the acid at the rock face, more closely resembling the actual flow state of downhole acid in fractures, thus improving the fidelity of the experimental simulation.

The utility model discloses a rotor, motor and compressor relates to motor technical field, the rotor includes rotor core and permanent magnet, the rotor core includes iron core body, the iron core body includes at least one first punching sheet and a plurality of second punching sheets that are laminated along the axial direction, the first punching sheet and the second punching sheet are respectively provided with a magnetic steel groove, the groove wall of the magnetic steel groove of the first punching sheet is provided with a limiting convex part, the shortest distance between the limiting convex part and the groove wall opposite to the limiting convex part is L, and the width of the magnetic steel groove is W; the permanent magnets are arranged in the magnetic steel grooves, and the thickness of each permanent magnet is T, and L is larger than 0 and smaller than 5 * (W-T). According to the technical scheme provided by the utility model, the permanent magnets can be prevented from vibrating when the rotor rotates, so that the noise level of the motor and the compressor can be improved.

The present invention belongs to the technical field of aerial work platforms, and discloses a hydraulic system of an aerial work platform and an aerial work platform. The hydraulic system of the aerial work platform includes a power unit, a lifting control valve and a steering control valve. The oil inlet of the power unit is connected to the oil tank; the oil inlet of the lifting control valve is connected to the oil outlet of the power unit, the oil return port of the lifting control valve is connected to the oil tank, and the second working oil port of the lifting control valve is connected to the lifting actuator. The oil inlet of the steering control valve is connected to the first working oil port of the lifting control valve, the oil return port of the steering control valve is connected to the oil tank, the first working oil port of the steering control valve is connected to the rodless chamber of the steering actuator, and the second working oil port of the steering control valve is connected to the rod chamber of the steering actuator. When the lifting control valve is in the middle position, the first working oil port and the second working oil port of the lifting control valve are both connected to the oil return port, and the oil inlet of the steering control valve is connected to the first working oil port of the lifting control valve to avoid pressure build-up.

The utility model discloses a device for recovering ammonium sulfate solution entrained in ammonium sulfate tail gas of an active coke regeneration system, which comprises an ammonium sulfate tower and a regeneration fan, a gas outlet of the ammonium sulfate tower is provided with a recovery mechanism, the recovery mechanism comprises a gas outlet pipe, one end of the gas outlet pipe far away from the ammonium sulfate tower is communicated with a U-shaped pipeline, and the U-shaped pipeline is communicated with the regeneration fan. The end, away from the gas outlet pipe, of the U-shaped pipeline is communicated with a discharge pipe, and the end, away from the U-shaped pipeline, of the discharge pipe is communicated with a booster fan. According to the device for recovering the ammonium sulfate tail gas entrained with the ammonium sulfate solution in the active coke regeneration system, the ammonium sulfate tail gas entrained with the ammonium sulfate solution enters the U-shaped pipeline through the inlet thermometer and the inlet reducer, and the flow speed in the U-shaped pipeline is rapidly reduced due to the fact that the pipeline is enlarged, so that the ammonium sulfate solution is separated out and flows back into the ammonium sulfate tower; ammonium sulfate crystals are prevented from being attached to an impeller of the booster fan to damage dynamic balance of the booster fan, long-time operation of the fan is guaranteed, and normal operation of the system is not affected.

The present invention discloses an optimization method for the automatic startup process of a large-scale water turbine unit. The startup operation from the unit shutdown state to the unit power generation state includes switch operation, generator auxiliary equipment operation, turbine auxiliary equipment operation, main transformer equipment operation, technical water supply equipment operation, hydraulic system startup, high-pressure oil injection, speed governor startup and excitation injection. The startup process is in the following order: switch operation, generator auxiliary equipment operation, turbine auxiliary equipment operation, main transformer equipment operation, technical water supply equipment operation, hydraulic system startup, high-pressure oil injection, speed governor startup and excitation injection. The present invention adjusts the automatic startup process to prevent the pressure build-up of the cooling equipment pipeline caused by starting the technical water supply first, thereby reducing systemic risks; refines the automatic startup steps to facilitate accurate positioning when a fault occurs in the automatic startup process; and sets the startup sequence of each device to prevent the phenomenon of excessive startup current when the devices are started at the same time.

The utility model relates to a filtering device for recycling PET waste materials, which comprises a shell, a feeding pipe is arranged at the top of the shell, a discharging pipe is arranged at the bottom of the side wall of the shell, a cylinder is arranged in the middle of the inner bottom of the shell, a filtering cavity is formed in an opening of the cylinder, and a blanking opening is formed between the top end of the cylinder and the inner top wall of the shell. The top of the cylinder is further sleeved with a circular ring connected with the interior of the shell, the side wall, below the circular ring, of the cylinder is of a hole-shaped structure, a storage cavity is formed between the part, above the circular ring, of the cylinder and the shell, a backflow pipe connected with the side wall of the cylinder is arranged at the bottom of the storage cavity, and a filter cover located in the storage cavity is buckled to the inlet end of the backflow pipe; a circle of surrounding edge is arranged at the bottom in the cylinder, the bottom end of the side wall of the surrounding edge is turned outwards to form an inclined scraping part, the bottom end of the scraping part abuts against the inner wall of the cylinder, a protruding block is further arranged on the inner side wall of the surrounding edge, and a lead screw driven by a motor is arranged on the protruding block. The device is simple in structure and convenient to use.

The invention provides a battery module multi-stage pressure relief-explosion suppression-fire retardance guide row device, and belongs to the technical field of safety protection and explosion prevention of lithium ion batteries, the battery module multi-stage pressure relief-explosion suppression-fire retardance guide row device comprises a battery module box, a connecting pipe and a gas treatment pressure relief box, a plurality of single lithium batteries are arranged in an inner cavity of the battery module box, and a battery pressure relief valve is arranged at the top of each single lithium battery; a gas flow guide mechanism is arranged at the top of an inner cavity of the battery module box, the gas outlet end of the battery pressure release valve is communicated with the gas flow guide mechanism, one end of the connecting pipe is communicated with the gas flow guide mechanism, a rotational flow condensation mechanism, a free radical weakening mechanism and a fire-retardant pressure release mechanism are arranged in the gas treatment pressure release box, and the rotational flow condensation mechanism is communicated with the free radical weakening mechanism. The free radical weakening mechanism communicates with the fire-retardant pressure relief mechanism, and the end, away from the gas flow guide mechanism, of the connecting pipe communicates with the rotational flow condensation mechanism. According to the device, the flame propagation and explosion risks are reduced, and the operation safety of the mining lithium battery system in a limited space is improved.