22 results about "Hydraulic intensifier" patented technology

The invention provides a small-bending-radius pipe push-bending device and a using method thereof.The small-bending-radius pipe push-bending device comprises an upper supporting plate, a push rod, a hydraulic pressurizing pipe, a guide sleeve, a push-bending mold, a sealing joint, a sealing ring, a rubber ball, a pressure sensor, a hydraulic pushing cylinder, a movable ball joint and a hydraulic pressurizer. The using method comprises the following steps that firstly, a straight pipe needing to be machined is installed on the inner side of the push-bending mold; the guide rod is attached to the guide sleeve; a plurality of rubber balls are filled in the inner cavity of the straight pipe; a gap of an inner cavity of the straight pipe is filled through the hydraulic pressurizer; starting the press to apply downward pressure to the push rod; the liquid filling pressure is set to pressurize and support the interior of the pipe, and the pipe begins to be bent and formed along with descending of the push rod; and after 90-degree bending forming is completed, the liquid filling pressure is gradually increased for pressurization shaping. By adopting the mode of filling gaps with rubber balls and hydraulic pressure, the supporting pressure in the pipe is improved; and by adopting a differential friction form, the length of a linear section is increased, and meanwhile uniform stress in the bending process is achieved.

The utility model discloses a cold isostatic press for graphite products, which comprises a base, four corners of the base are provided with supporting legs, the supporting legs are provided with a first supporting plate and a second supporting plate, the first supporting plate is provided with a working cylinder, an end cover capable of covering up and down is arranged right above the working cylinder, and the working cylinder is provided with a second supporting plate. The second supporting plate is provided with a hydraulic supercharger under the working cylinder, the base is provided with a movable static pressure main body, a first cavity is formed in the static pressure main body, and the end cover is matched with the working cylinder and then statically presses in the first cavity; when the cold isostatic press for the graphite product is used, graphite can be pressed into a solid body, the overall structure is stable under high pressure, the safety coefficient is high, the static pressing body is wide in application range, the graphite static pressing requirement is met, and the cold isostatic press is suitable for application and popularization.

A pneumohydraulic pressure intensifier includes at least one pneumatic piston that is coupled to a hydraulic pump. The pressure intensifier includes a regulator which allows to set the hydraulic output pressure. The regulator is coupled to a hydraulic pilot control valve which is adapted to interrupt the air supply to the pneumatic piston when a set maximum pressure is reached.

The present disclosure provides a workshop material transport device based on a hydraulic pressure boosting cylinder. The workshop material transport device based on the hydraulic pressure boosting cylinder comprises a device main body, a support plate assembly, a plurality of wheel body driving mechanisms and a plurality of hydraulic buffering mechanisms. One end of each wheel body driving mechanism is movably connected to the bottom of the device main body, and the other end of each wheel body driving mechanism is used to abut the ground. The plurality of wheel body driving mechanisms are arranged at intervals and are used to jointly drive the device main body to move relative to the ground. Each hydraulic buffering mechanism is arranged adjacent to the corresponding wheel body driving mechanism. Each hydraulic buffering mechanism comprises a hydraulic pressure boosting cylinder and a support seat body. The hydraulic pressure boosting cylinder is connected to the device main body, and the power output end of the hydraulic pressure boosting cylinder is connected to the support seat body. The hydraulic pressure boosting cylinder is used to drive the support seat body to extend and retract relative to the ground. The workshop material transport device based on the hydraulic pressure boosting cylinder is convenient to use.

A pneumohydraulic pressure intensifier includes at least one pneumatic piston that is coupled to a hydraulic pump. The pressure intensifier includes a regulator which allows to set the hydraulic output pressure. The regulator is coupled to a hydraulic pilot control valve which is adapted to interrupt the air supply to the pneumatic piston when a set maximum pressure is reached.

The self-closing type water-saving valve comprises a three-way valve body, a water outlet and two water inlets are formed in the upper end and the lower end of the three-way valve body respectively, a water inlet channel of each water inlet is communicated with a water outlet channel of the water outlet, each water inlet channel is provided with a matched valve element, and the valve element is transversely inserted into the corresponding water inlet channel, so that the water-saving valve is closed. Further, the water inlet channel is closed; comprising hydraulic superchargers corresponding to all the valve elements. A hydraulic pump of the hydraulic supercharger is communicated with a hydraulic cylinder, a push rod of the hydraulic cylinder is connected with the corresponding valve element, a piston body of the hydraulic pump is rotationally connected with the lower end of a piston rod, and external threads are arranged on the upper portion of the piston rod. The piston rod of each hydraulic pump converts linear motion into rotary motion, and is matched with the handle to drive the driving gear to rotate, so that more labor is saved, the force required for opening the valve is further reduced, and the valve is particularly suitable for kindergartens, nursing homes, hospitals and other places.

A brake system includes an air-to-hydraulic intensifier configured to couple to a brake actuator that engages a brake to limit movement of a tractive element where the air-to-hydraulic intensifier is configured to receive a supply of air and provide a hydraulic fluid to the brake actuator based on the supply of air to overcome a brake biasing force of the brake actuator to disengage the brake actuator from the brake to permit movement of the tractive element, a hydraulic reservoir coupled to the air-to-hydraulic intensifier, and a valve. The valve includes a first port fluidly coupled to the air-to-hydraulic intensifier, a second port fluidly coupled to the hydraulic reservoir, a third port fluidly coupled to the brake actuator, and a valve gate that is repositionable between a first position that couples the first port to the third port and a second position that couples the second port to the third port.

There is disclosed a liquefied gas cargo carrier emergency valve drive system, comprising one or more hydraulic accumulators configured to provide hydraulic fluid to emergency valves controlling the handling of a liquefied gas cargo on the carrier, and a hydraulic pressure intensifier configured for storing the hydraulic fluid in the one or more hydraulic accumulators at a pressure above 150 barg.

The present invention discloses a pressure load control system and method for a deep geotechnical engineering disturbance simulation facility. The system is used to provide a pressure test environment for the main cabin, including a main cabin pressurization and pressure relief unit and a pressure stabilization unit using thermal oil as the working medium. The main cabin pressurization and pressure relief unit is used to pressurize and relieve the main cabin to apply or unload the confining pressure under conditions with large flow changes. The pressure stabilization unit is used to stabilize the main cabin and pressurize, stabilize, and relieve the actuator under conditions with small flow rates to meet pressure test requirements. The control module can control the corresponding hydraulic booster action through a servo valve closed loop according to the target command and feedback from the monitoring module. This application fully considers the characteristics of deep geotechnical engineering disturbance simulation facilities and can accurately control the pressure of the main cabin and the actuator, providing a basis for subsequent rock test and other evaluations.

The utility model belongs to the field of injection molding machines, and relates to an electric injection molding machine with a hydraulic pressurizing cylinder high-pressure mold locking, which comprises an injection molding device, a mold, a mold closing device and a pressurizing device, the pressurizing device comprises a mold opening and closing oil cylinder, a piston rod is arranged in an oil cavity and divides the oil cavity into a liquid inlet cavity and a liquid outlet cavity, the electric injection molding machine further comprises a pressurizing cylinder, and the pressurizing cavity is divided into an oil return cavity and a pressurizing cavity. The oil return cavity is communicated with a liquid outlet cavity of the mold opening and closing oil cylinder, the pressurizing cavity is communicated with a liquid inlet cavity of the mold opening and closing oil cylinder, a pressurizing push rod is arranged in the pressurizing cavity, a circulation section is arranged at the front end of the pressurizing push rod, an oil groove is formed in the circulation section, the oil groove is opened towards the front end and communicated with the pressurizing cavity, and a plurality of circulation through holes are formed in the peripheral side of the rear end of the circulation section. The pressure maintaining device has the advantages that the pressure maintaining is realized through the pressure cylinder, the occupied volume can be reduced, and the mold clamping force can be ensured.

A hydraulic fracturing spread system has modular high-pressure fracturing fluid manifold assemblies which couple to form a large trunk line for collecting and conveying high pressure fracturing fluid toward the well bore. Oil-hydraulic intensifier pump units integrated with the modular manifold assemblies increase the fracturing fluid pressure into the trunk line. The manifold assemblies may be configured differently from one to the other and coupleable horizontally and / or vertically.

The invention relates to a switching device (10) for switching rollers (12) for rolling rod-shaped or wire-shaped rolling stock, which rollers are fixed to a roller shaft body (14) in a rotationally fixed manner by means of dynamic coupling in order to be able to transmit a rolling torque from the roller shaft body (14) to the rollers (12). The switching device (10) has a fluid connection (16) for connecting a fluid line (18) to a bore (15) of the roll shaft body (14) and a hydraulic unit (20) for applying a high pressure to a fluid in the fluid line (18). The hydraulic unit (20) is designed as a hydraulic supercharger, which has a low-pressure cylinder (22), a low-pressure piston (24) and a low-pressure fluid on the low-pressure side and a high-pressure cylinder (26), a high-pressure piston (28) and a high-pressure fluid on the high-pressure side. Wherein the low-pressure side is fluidly separated from the high-pressure side, such that the low-pressure fluid is substance-separated from the high-pressure fluid.

The invention provides workshop material transportation equipment based on a hydraulic pressure cylinder. The workshop material transportation equipment based on the hydraulic pressure cylinder comprises an equipment body, a supporting plate assembly, a plurality of wheel body driving mechanisms and a plurality of hydraulic buffering mechanisms. One end of each wheel body driving mechanism is movably connected to the bottom of the equipment main body, the other end of each wheel body driving mechanism is used for abutting against the ground, and the multiple wheel body driving mechanisms are arranged at intervals and used for jointly driving the equipment main body to move relative to the ground; each hydraulic buffering mechanism is arranged adjacent to the corresponding wheel body driving mechanism, each hydraulic buffering mechanism comprises a hydraulic pressure cylinder and a supporting seat body, the hydraulic pressure cylinders are connected to the equipment main body, the power output ends of the hydraulic pressure cylinders are connected to the supporting seat bodies, and the hydraulic pressure cylinders are used for driving the supporting seat bodies to do telescopic motion relative to the ground. The workshop material transportation equipment based on the hydraulic pressure cylinder is better in use convenience.

The utility model discloses a portable hydraulic pressurizer which comprises a pressurizer body, an output end oil inlet and return connector set arranged at one end of the pressurizer body in a communicating mode, an input end oil inlet and return connector set arranged at the other end of the pressurizer body in a communicating mode and a shell fixedly arranged outside the pressurizer body in a covering mode. A handle is fixedly arranged at the top of the shell; the plurality of fixed supporting legs are fixedly arranged at four corners of the bottom of the shell; the four telescopic supporting leg assemblies are hinged to the four corners of the bottom face of the shell, a clamping block is fixedly arranged at the center of the bottom face of the shell, and clamping grooves used for clamping the telescopic ends of the telescopic supporting leg assemblies are formed in the clamping block. The shell is arranged outside the supercharger body, the handle is arranged at the top of the shell, a user can conveniently take and carry the supercharger, the fixed supporting foot and the telescopic supporting foot are arranged, the fixed supporting foot is used for leveling the ground, and the supercharger can be stably placed on the concave-convex ground by adjusting the telescopic supporting foot.

The utility model relates to the technical field of hydraulic pressurizing equipment, and discloses a pneumatic hydraulic pressurizing cylinder which comprises a pressurizing cylinder body and a hydraulic oil cup, the hydraulic oil cup comprises an oil containing part and a pressurizing part, the oil containing part is used for containing hydraulic oil, the pressurizing part is used for pressurizing the hydraulic oil, and the oil containing part and the pressurizing part are arranged in a mutually separated mode. An oil passing channel is arranged between the oil containing part and the pressurizing part, a pressurizing space is formed in the pressurizing cylinder body, a pressurizing piston rod is arranged in the pressurizing space, a pressurizing opening communicated with the pressurizing part is formed in the pressurizing space, and the pressurizing piston rod is arranged at the pressurizing opening and communicated with the pressurizing part; the hydraulic oil cup is additionally arranged on the pressurizing cylinder body, hydraulic oil is contained through the oil containing part of the hydraulic oil cup, the hydraulic oil enters the pressurizing part through the oil passing channel, the pressurizing piston rod pressurizes the hydraulic oil, and the pressurized hydraulic oil enters equipment to pressurize the equipment; and complete cooperation with original equipment is facilitated, and meanwhile, the equipment can be rapidly pressurized.

This invention provides a small-bending-radius pipe bending device and its usage method, comprising: an upper support plate, a push rod, a hydraulic pressure boosting pipe, a guide sleeve, a bending die, a sealing joint, a sealing ring, rubber balls, a pressure sensor, a hydraulic push cylinder, a movable ball joint, and a hydraulic pressure booster. The method includes the following steps: first, the straight pipe to be processed is installed inside the bending die and fitted against the guide sleeve; several rubber balls are filled into the inner cavity of the straight pipe; the gaps in the inner cavity of the straight pipe are filled using the hydraulic pressure booster; a press is started to apply downward pressure to the push rod; the filling pressure is set to provide pressure support inside the pipe, and as the push rod moves downward, the pipe begins to bend and form; after completing a 90° bend, the filling pressure is gradually increased for pressure shaping. This invention increases the internal support pressure of the pipe by using rubber balls and hydraulic filling of the gaps; and increases the length of the straight section while achieving uniform force distribution during the bending process by employing differential friction.

An axial plunger type hydraulic supercharger with a variable supercharge ratio comprises a pump body and an end cover, a swash plate, a cylinder body and plungers are arranged in the pump body, one side, close to the cylinder body, of the end cover is connected with an oil distribution disc and a variable pressure disc, and hydraulic oil in plunger holes circulates through oil channels in the oil distribution disc, the variable pressure disc and the end cover; the oil distribution disc is provided with two kidney-shaped holes, the transformer disc is provided with an isolation boss, one kidney-shaped hole in the oil distribution disc is divided into two independent kidney-shaped holes by the isolation boss, and the isolation boss slides in the kidney-shaped holes along with the transformer disc under the action of a driving device and keeps sealing so as to change the through-flow area of the two independent kidney-shaped holes. According to the two kidney-shaped holes connected with the plunger holes in the oil distribution disc, the shape of one kidney-shaped hole is fixed, the interior of the other kidney-shaped hole is divided into the two through holes with the adjustable proportion, it can be guaranteed that the rotating speed change of the transformer cannot be too large when the flow of primary pressure changes, the working stability and reliability of the transformer are guaranteed, and the service life of the transformer is prolonged. And the supercharge ratio can be conveniently adjusted.

The invention discloses a rapid releasing hydraulic system of a releasing machine. The rapid releasing hydraulic system comprises a hydraulic oil supply module, a releasing oil cylinder, a low-pressure driving oil way connected with the hydraulic oil supply module and the releasing oil cylinder, and a pressurization driving oil way connected with the hydraulic oil supply module and the releasing oil cylinder. The pressurizing driving oil way is provided with a sequence valve for sensing the driving pressure of hydraulic oil, and when the driving pressure of the hydraulic oil is larger than a preset value of the sequence valve, the sequence valve is switched on to switch the low-pressure driving oil way to the pressurizing driving oil way. According to the technical scheme, a common hydraulic system is adopted to drive the hydraulic pressurizer to act in sequence, and due to the fact that the common hydraulic system is low in manufacturing cost, the pressurizer can achieve large flow. Therefore, the novel hydraulic system greatly improves the releasing efficiency, and the price of the releasing hydraulic system is greatly reduced.

The present invention provides a device for testing the propagation speed of pressure waves in oil. It includes a hydraulic booster oil circuit, a test oil circuit, a closed pressurizing unit, a cooling unit and a heating unit; the hydraulic booster oil circuit includes a system oil tank, a main pump, a remote-controlled unloading valve, a proportional servo valve, an electromagnetic reversing valve, an accumulator, a first heat exchanger and a hydraulic booster for generating pulse waves. The test circuit includes a medium oil tank, an oil replenishment pump, a hydraulic steel pipe, a hydraulically controlled one-way valve and a second heat exchanger; the closed pressurizing unit includes an auxiliary oil tank connected to the medium oil tank, a vacuum degassing component arranged on the oil tank and a first stop valve; the heating unit is arranged in the medium oil tank. In the present invention, a heating unit and a cooling unit are designed to accurately control the temperature of the hydraulic oil with an accuracy of ±1°C. During the pulse process, the oil in the tested hydraulic steel pipe interacts with the oil in the medium oil tank, and the temperature of the oil in the tested hydraulic steel pipe is also controlled.

An axial piston-type hydraulic booster with variable boost ratio includes a pump body and an end cover. The pump body houses a swashplate, a cylinder, and a piston. A distribution plate and a transformer plate are connected to the side of the end cover near the cylinder. Hydraulic oil in the piston bore flows through oil passages on the distribution plate, transformer plate, and end cover. The distribution plate has two oblong holes, and the transformer plate has an isolation boss. The isolation boss divides one of the oblong holes on the distribution plate into two independent oblong holes. The isolation boss slides within the oblong holes under the action of a drive device and maintains a seal, thereby changing the flow area of ​​these two independent oblong holes. In this invention, the two oblong holes on the distribution plate connected to the piston bore have one fixed shape and the other internally isolated into two through holes with adjustable proportions. This ensures that the transformer speed does not change too much when the primary pressure and flow rate change, guaranteeing the stability and reliability of the transformer operation, and also allows for convenient adjustment of the boost ratio.

A hydraulic fracturing spread system has modular high-pressure fracturing fluid manifold assemblies which couple to form a large trunk line for collecting and conveying high pressure fracturing fluid toward the well bore. Oil-hydraulic intensifier pump units integrated with the modular manifold assemblies increase the fracturing fluid pressure into the trunk line. The manifold assemblies may be configured differently from one to the other and coupleable horizontally and / or vertically.

The utility model discloses a novel hydraulic pressure intensifier cylinder belongs to fluid pressure conversion equipment technical field, including main cylinder body, pressure intensifier cylinder body and inside piston rod, and the outlet end of pressure intensifier cylinder body is connected with main cylinder body, and piston rod includes piston main body and axle body, and the cross section area of piston main body is axle body cross section area's n times, and piston main body and main cylinder body inner wall slide fit, and axle body penetrates the outlet end of main cylinder body and with pressure intensifier cylinder body inner wall slide fit, and the oil liquid mouth on main cylinder body lateral wall is located between piston main body and pressure intensifier cylinder body, and the liquid supplementing mouth on pressure intensifier cylinder body lateral wall is set up between axle body and liquid outlet, and the piston rod in main cylinder body reciprocatingly moves under the action of hydraulic oil, and utilize the one-way valve of liquid supplementing mouth and liquid outlet, and the hydraulic oil is supplemented by liquid supplementing mouth negative pressure, and exports high pressure hydraulic oil through liquid outlet. The utility model utilizes reciprocating linear motion piston rod to form plunger type movement in pressure intensifier cylinder, and utilizes the multiple of piston main body and axle body cross section area to realize the purpose of pressure intensification.