4478results about "Servomotor components" patented technology

A method for detecting a safe state of a switchable valve of a hydraulic system of an actuator in a motor vehicle includes the at least one first switchable valve, which is actuated by being energized, a pump, and a controller which controls at least the first switchable valve and the pump. The pump delivers the fluid to a first load in a first rotational direction and to at least one second load in a second rotational direction.

Embodiments of a manifold of a hydraulic fracturing system include a junction having an inlet flow bore. The junction can include an integrated flow junction and valve check assembly having a body including a central portion and one or more side portions. The central portion can be positioned between a pair of manifold sections of the manifold and attached thereto. The one or more side portions extend radially from the central portion and include an inlet bore through which a pressurized fluid is received and supplied to the manifold. One or more check valves is positioned along the inlet bore so as to be integrated within the body of the junction.

The invention discloses a deep sea underwater integrated electro-hydraulic actuator system adopting pump and valve combination. The deep sea underwater integrated electro-hydraulic actuator system comprises a hydraulic cylinder, a pump control assembly and a valve control assembly. The pump control assembly comprises a metering pump, a first switch valve and a second switch valve; the valve control assembly comprises a large-flow proportional valve, a small-flow proportional valve, a deep sea compensation energy accumulator and a third switch valve. The metering pump, the first switch valve and a rod cavity of the hydraulic cylinder are sequentially connected through a pipeline, the metering pump, the second switch valve and a rodless cavity of the hydraulic cylinder are sequentially connected through a pipeline, the metering pump, the third switch valve and the deep sea compensation energy accumulator are sequentially connected through a pipeline, and the rodless cavity of the hydraulic cylinder is connected with the large-flow proportional valve and the small-flow proportional valve through pipelines. Two control modes of the actuator can be completed, large-flow control is achieved through the pump control assembly, high efficiency and energy conservation are achieved, flow needed by maintenance is supplied to a rodless cavity of the actuator through the valve control assembly via the large-flow proportional valve and the small-flow proportional valve, and posture keeping and emergency action are achieved.

The invention relates to the technical field of stackers, in particular to a rigid anti-swing device of a stacker for an automatic stereoscopic warehouse, which comprises the stacker, a first-stage moving platform and a second-stage moving platform arranged on one side of the stacker, an objective table arranged above the second-stage moving platform, a scissor-fork type connecting rod mechanism, a buffer mechanism and a protection mechanism, the scissors fork type connecting rod mechanism is connected between the first-stage moving platform and the second-stage moving platform of the stacking machine. The shear fork type connecting rod mechanism is additionally arranged between the first-stage moving platform and the second-stage moving platform, the relative motion between the two platforms is forced to be single and determined linear motion, the connecting rigidity in the transverse direction and the vertical direction is greatly enhanced, and therefore basic shaking caused by sudden acceleration change and structural elastic deformation is restrained.

A constant-flow control valve group, an auxiliary arm control module, a complete hydraulic system, and a crane. The constant-flow control valve group comprises: a cartridge valve; a cartridge reversing valve, comprising a working oil port on one side and a main oil return port and a reversing valve oil inlet selectively connected to the working oil port on the other side, the working oil port being connected to a control oil port of the cartridge valve, and the reversing valve oil inlet being connected to a main oil inlet of the cartridge valve; and a feedback on-off valve, disposed in a working feedback oil path connected between the main oil inlet of the cartridge valve and a main feedback oil port of the constant-flow control valve group. The auxiliary arm control module comprises the constant-flow control valve group and a main reversing valve. The complete hydraulic system comprises the auxiliary arm control module and an auxiliary arm luffing cylinder, and may further comprise a load-sensitive oil pump and a main valve. The present application can achieve the effect of directly connecting an auxiliary arm hydraulic system to an existing complete hydraulic system as a sub-module without altering the original system.

The utility model discloses a hydraulic walking control system 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 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. According to the utility model, the problem that the walking effect is influenced due to the change of flow and pressure caused by slipping during walking is avoided.

The invention discloses an AGV portal motion speed control method and an AGV, and the method comprises the steps: receiving a portal motion speed instruction, and obtaining a needed portal motion speed in the portal motion speed instruction; based on the action speed of the portal frame, a speed-rotating speed formula is used for calculating the required rotating speed of the pump; if the required rotating speed is larger than or equal to the minimum rotating speed of the pump motor, the rotating speed of the pump motor is adjusted to the pump required rotating speed, the current corresponding to the opening degree of a multi-way valve port enabling the output flow allowed by the multi-way valve to be larger than the real-time output flow of the pump is calculated, and the opening degree of the multi-way valve port is controlled based on the current; otherwise, the rotating speed of the pump motor is adjusted to the minimum rotating speed, the current corresponding to the opening degree of the valve port of the multi-way valve enabling the output flow allowed by the multi-way valve to be smaller than the real-time output flow of the pump is calculated, and the opening degree of the valve port of the multi-way valve is controlled based on the current. According to the method, different flow control modes are selected based on the required rotating speed of the pump, the low-speed lifting micro-motion performance is optimized, the pressure loss generated by rapid lifting is reduced, and the energy consumption is reduced.

The invention relates to the technical field of balance valves, and discloses a load compensation balance valve which comprises a balance valve body and an adjusting nut, a locking cap is in threaded connection with the outer arc surface of the adjusting nut, the right side of the locking cap is in contact with a main valve element spring, and the end, away from the locking cap, of the main valve element spring is in contact with a tip cone. The function of a one-way valve of one balance valve element assembly is canceled, so that oil inlet from a V port to a C port depends on the pressure of a control oil port and generates driving pressure through a throttling network composed of a specific throttling hole, the one-way valve and a bypass throttling hole, and the other balance valve element assembly obtains the driving pressure equal to the pressure of the control oil port through an independent throttling hole. A pressure difference is formed to realize sequential opening of the two assemblies; the linkage logic inhibits the jitter of the multiple feedback system under the negative load, stabilizes the falling speed of the arm support, and avoids the risk of overturning of the whole machine caused by the dynamic load.

The invention relates to the technical field of injection molding machine hydraulic control, in particular to an injection molding machine hydraulic pump control system and a control method thereof, and aims to solve the problems of high energy consumption, high cost or poor temperature control of a traditional hydraulic scheme. The system comprises a hydraulic oil tank, a driving unit and an oil way control module. The driving unit comprises a driving motor, and a fixed displacement pump and a plurality of swash plate type variable displacement piston pumps which are driven by the driving motor, and swash plates of the variable displacement pumps can be switched between negative and positive angles so as to adjust the displacement or actively suck oil; the oil way control module is provided with a flow collecting valve set capable of switching flow collecting / independent states of oil outlet ways of the constant displacement pump and the variable displacement pump, the integrated cooling unit forms an independent cooling filtering loop, the temperature and pressure adjusting assembly is combined with a temperature sensor to control temperature and adjust pressure, and the pressure limiting protection valve set is connected with the constant displacement pump and the variable displacement pump. And the pressure limiting protection valve is matched with a pressure sensor to realize overpressure protection. According to the invention, cost and energy saving are both considered, precise temperature control and pressure protection are realized, and system stability and plastic part forming precision are improved.

The invention discloses a paper-plastic mold positioning auxiliary system capable of monitoring hydraulic pressure in real time through an AI. The paper-plastic mold positioning auxiliary system comprises an AI control center, a hydraulic monitoring unit, an air pressure monitoring unit, a positioning auxiliary execution unit, an abnormity protection unit and a data acquisition and transmission module. The hydraulic monitoring unit is used for collecting hydraulic oil cylinder pressure, temperature, hydraulic oil viscosity and equipment operation duration data; the air pressure monitoring unit collects air pressure, flow and valve delay time data of a pipeline valve; the data acquisition and transmission module transmits data to the AI control center, and the AI control center analyzes abnormity through a model and calculates a correction amount; the positioning auxiliary execution unit coordinates the positioning of the servo motor and the hydraulic oil cylinder; and the abnormal protection unit receives the early warning and starts a protection action. The system solves the problems of hydraulic monitoring lag and the like, realizes hydraulic and air pressure cooperative monitoring and positioning compensation, ensures production coherence and equipment safety, and is adaptive to automatic production of paper-plastic molds.

The invention provides a multi-pump zero-displacement hydraulic agile control system and a control method thereof. The system is composed of a hydraulic system, a mechanical system and an electric control system. According to the control method, a multi-pump zero-displacement switching mechanism and a deep reinforcement learning strategy based on an Actor-Critic architecture are fused, the effective oil supply amount is adjusted by dynamically starting and stopping part of hydraulic pumps, a servo motor rotating speed instruction is output in real time in combination with a neural network, and the strong coupling dynamic relation between sliding block displacement and the angle of a swing rod is coordinated. The system switches part of the pumps to a bypass state when approaching balance so as to reduce energy consumption, and starts all the pumps to guarantee recovery capacity when greatly deviating. According to the technical scheme, on the premise of not depending on an accurate mathematical model, agile, stable and energy-saving control over the inverted pendulum type under-actuated system can be achieved.

A hydraulic drive apparatus includes a hydraulic pump that discharges a working fluid; a flow dividing valve that divides a pump passage connected to the hydraulic pump into first and second passages, and changes an opening degree of each passage according to a signal that is input to the flow dividing valve; a travel system hydraulic circuit that is connected to the first passage and controls a flow of the working fluid to a travel motor; a loading system hydraulic circuit that is connected to the second passage and controls a flow of the working fluid to a loading actuator; a pressure sensor that detects a pressure supplied to the travel motor; and a control device that controls, by outputting the signal to the flow dividing valve, the opening degree of the first and second passages according to the pressure detected by the pressure sensor.

The invention relates to the technical field of logistics warehouse storage equipment, in particular to a speed reduction control method for a high-speed motor driven hydraulic system, which comprises the following steps: S1, the output torque of a high-speed motor is transmitted to a gear pump through a motor shaft, a planetary reducer and a planet carrier in sequence to drive the gear pump to work; s2, acquiring a three-phase current instantaneous signal and a direct current bus voltage signal, and performing preprocessing and frequency spectrum conversion to determine a current frequency spectrum; s3, in the current frequency spectrum, extracting an energy value in a preset frequency band with the meshing frequency and harmonic waves of the planetary gear as the center, and calculating to obtain a disturbance characterization value of the planetary gear; s4, determining a torque smooth adjustment coefficient according to the planet wheel disturbance characterization value; and S5, dynamically adjusting a dynamic response parameter of a torque control ring of the high-speed motor according to the torque smooth adjustment coefficient. The problems that in the prior art, a high-rotating-speed motor and a hydraulic pump are not matched in rotating speed, and mechanical disturbance is difficult to restrain are solved.

The invention belongs to the technical field of hydraulic test and intelligent control, and particularly discloses a hydraulic component test system integrating data acquisition and automatic data analysis functions, which comprises a physical hardware test platform, a test control software platform and a digital twinborn model of a tested component, and realizes real-time interaction through an OPC UA protocol. Model parameters are corrected on line by means of measured data, and steady state, transient state and disturbance working condition tests are automatically executed based on a working condition library; and dynamically optimizing a test sequence in a test process, skipping a redundant working condition or encrypting a critical region, and synchronously generating a structured performance report. The accuracy and consistency of test results are improved, working condition simulation signals are automatically generated, performance data are collected in real time, a comprehensive performance report is generated, manual operation is reduced, the test process optimization unit can skip redundant working conditions and refine failure boundary positioning, and the test time and cost are effectively saved.

The invention relates to the technical field of hydraulic valves, and discloses a buffer overflow valve which comprises a shell, a first sealing ring is arranged on the surface of the shell, a connecting block is fixedly connected to the right end of the shell, an adjusting assembly is arranged in the connecting block, and a storage assembly is fixedly connected to the side, close to the shell, of the adjusting assembly. A moving assembly is arranged in the storage assembly, a spring is arranged between the storage assembly and the moving assembly, the adjusting assembly comprises a threaded rod, the surface of the threaded rod is in threaded connection with a connecting block, and the surface of the threaded rod is in threaded connection with a locking nut. A closed cavity is formed between a connecting column and a fixing seat, a second sealing ring is used for sealing, a valve element and an oil way in the connecting column are communicated with the closed cavity, the cavity is filled with oil, and when the oil on the left side of the valve element rises, due to the existence of the oil in the closed cavity, the valve element cannot instantly leave a valve seat at the bottom of a valve block; therefore, the buffer overflow valve can be opened at low pressure, and pressure impact cannot be generated.

The invention relates to the technical field of hydraulic distributors, and discloses a hydraulic distributor with a balance guide rod anti-shaking function and a method thereof.The hydraulic distributor comprises a machine shell, a valve element is slidably connected into the machine shell, and a vibration buffering assembly is arranged at the other end of the machine shell; the vibration buffering assembly comprises a shell, a damping pipe is fixedly installed in the shell, and a guide rod is fixedly connected to the end, away from the driver, of the valve element. A first adjusting part is arranged on the piston, the first adjusting part comprises a rotating ring, the rotating ring is rotationally connected into the piston, and a plurality of valve blocks are fixedly connected to the outer wall of the rotating ring. Through the arrangement of the vibration buffering assembly, when the valve element is impacted to shake, damping oil flows to form basic damping force for preliminary buffering, then compressed nitrogen is used for absorbing energy to achieve secondary buffering, a first spring and nitrogen can assist in resetting of components, double progressive vibration buffering is achieved, and the shaking condition of the valve element is relieved.

The invention provides an impact rotary drilling hydraulic control system of a dinting machine, which belongs to the technical field of hydraulic control systems and comprises a variable pump, a pilot oil source control valve group, a proportional multi-way valve, a shuttle valve I, a one-way pressure reducing valve, a shuttle valve II, a drilling machine pilot handle group, an impact rotary drilling machine, a bidirectional hydraulic lock and a drilling machine feeding oil cylinder. According to the hydraulic control system for percussive rotary drilling of the dinting machine, the percussive rotary drilling machine can perform stepless speed regulation between two speeds, high-frequency percussive or low-frequency percussive operation can be flexibly used according to rock stratum and geological working conditions, the application range of equipment is greatly widened, and the hydraulic control system can be used for rock stratums with high hardness, weathered rock stratums and hard and brittle geology. And during low-frequency impact operation, one-key linkage operation can be realized, namely, the functions of feeding, rotating and impacting of the drilling machine can be completed by operating the impact pilot handle.

The utility model discloses a hydraulic logic control system for a sidesway distance adjusting fork. Comprising an oil pump, a safety valve, a first reversing valve plate, a logic control valve block, a first hydraulic control one-way valve, a first three-way pipe, a right pallet fork distance adjusting oil cylinder, a left pallet fork distance adjusting oil cylinder, a first overload valve, a second hydraulic control one-way valve, a second three-way pipe, a third three-way pipe, a third hydraulic control one-way valve, a throttling valve, a second reversing valve plate and a second overload valve. The logic control valve block comprises a second hydraulic control one-way valve, a third hydraulic control one-way valve, a throttling valve and a second overload valve, and the second hydraulic control one-way valve, the third hydraulic control one-way valve, the throttling valve and the second overload valve are communicated through pipelines. And the first reversing valve plate is communicated with the second reversing valve plate. According to the hydraulic logic control system for the laterally-moving distance adjusting fork, the purpose of hydraulic oil way regulation and control is achieved through the arrangement of the structure.

The invention provides a hydraulic closed-loop tilling depth control system based on multi-sensor fusion in order to solve the problems that traditional tilling depth control is low in precision, poor in stability and the like. The system collects data through an inclination angle sensor, a displacement sensor, a posture sensor and the like, and after fusion processing, a hydraulic cylinder drives a parallel four-bar mechanism to adjust the tilling depth of the subsoiler. The system has three innovations: firstly, a dynamic model is constructed by using multi-source sensor cooperation and sliding mode variable structure control, the anti-interference capability is improved by combining a control strategy, and accurate tilling depth control is dynamically realized according to soil conditions; 2, a parallel four-bar mechanism is mechanically designed to be combined with hydraulic drive, terrain interference is eliminated by utilizing mechanism characteristics, and the control precision and unbalance loading resistance are enhanced; and thirdly, a bidirectional hydraulic lock and a manual-electric dual-mode oil way are adopted for hydraulic pressure, so that reliable tilling depth control and continuous operation are guaranteed. The three innovations are fused, and a high-precision, strong-stability and ultra-reliable tilling depth control solution is provided for saline-alkali soil agriculture.

The invention discloses a self-sealing oil return and suction three-in-one valve and a self-sealing oil suction and return integrated filter, and belongs to the technical field of hydraulic system filtration. In order to solve the problems that the installation position of an existing oil suction and return integrated filter is limited, leakage is prone to occurring when a filter element is replaced, bubbles cannot be treated, and redundancy is caused by separation of a bypass and a sealing structure, a main valve element is integrated with a self-sealing valve element, a back pressure valve element and an oil suction valve element, and when the filter element is installed, an upper spring presses the main valve element to open an oil way; during disassembly, the self-sealing valve spring drives the main valve core to reset to realize automatic sealing; meanwhile, a defoaming filter element is integrated to break bubbles in return oil, a conical separator is arranged to isolate an oil suction path from an oil return path, and an emergency oil path is conducted through a bypass one-way valve when the oil return filter element is blocked. The filter supports side mounting or bottom mounting, is free of leakage during maintenance, has solid impurity filtering and gas-liquid separating functions, is compact in structure and high in reliability, and is suitable for compact hydraulic systems of engineering machinery and industrial equipment.

The invention relates to a hydraulic valve, particularly provides a hydraulic valve assembly, and aims to solve or relieve the problem of pressure difference between an oil inlet cavity and an oil outlet cavity of a hydraulic valve under a part of working conditions in the prior art. In order to achieve the purpose, the hydraulic valve assembly comprises a main valve body, a main valve element assembly, a control oil cylinder, a control piston and a guide assembly, and the main valve body comprises a main oil hole and a main valve element hole; the main valve element assembly is inserted into the main valve element hole, and the main valve element assembly and the main valve element hole form a valve line sealing structure. The control oil cylinder is positioned above the main valve body; the control piston is installed in the main valve element assembly and extends into the control oil cylinder together with the main valve element assembly. The guide assembly is arranged above the control oil cylinder and used for controlling the movement direction of the main valve element assembly to form different working states. All the parts are matched with one another so that external high-pressure oil can be used for pushing the control piston to open the main valve element assembly. Under the condition that the technical scheme is adopted, the residual pressure difference is eliminated through verification of a test bed.

The invention relates to the technical field of hydraulic control, and discloses a hydraulic motor constant torque self-adaptive PID (Proportion Integration Differentiation) control system which comprises a controller and a hydraulic driving unit, the controller performs frequency domain separation on the pressure signal by using a signal preprocessing module, and extracts an average pressure difference representing the driving force and a ripple amplitude representing the fluid rigidity; the state observation module estimates an instantaneous volume elastic modulus based on the ripple amplitude, corrects a compression item in a flow continuity model by using the elastic modulus, and calculates an instantaneous leakage coefficient of the motor in real time; the self-adaptive control module establishes dynamic mapping of PID gain and physical parameters, the proportional gain is adjusted by using a leakage coefficient to match system damping, the integral gain is adjusted by using a volume elastic modulus to adapt to inherent frequency, and a control instruction is synthesized by combining feedforward compensation. According to the method, the problem of model mismatch caused by oil characteristic change and motor abrasion is effectively solved, and the whole-life-cycle control precision of the system is improved.

The invention discloses a hydraulic system and hydraulic equipment for self-adaptive buffering under impact. Comprising a hydraulic motor used for driving an execution element, a closed type pump set used for driving the hydraulic motor, and a first oil way used for connecting an oil outlet of the closed type pump set with an oil inlet of the hydraulic motor. The second oil way is used for connecting an oil outlet of the hydraulic motor with an oil inlet of the closed type pump set; the self-adaptive cushion valve set is used for weakening pressure impact of the oil way on the high-pressure side and avoiding pressure suction of the oil way on the low-pressure side; oil inlets and oil outlets of the two self-adaptive buffer valve groups are oppositely connected with the first oil way and the second oil way in parallel; the hydraulic closed system is ingenious in structure, the self-adaptive buffer valve group can weaken pressure impact of a high-pressure side oil way, meanwhile, the situation that the pressure of a low-pressure side is rapidly reduced or even air is sucked is avoided, normal work of the hydraulic closed system is guaranteed, and the service life of the hydraulic closed system and all elements can be prolonged.

The invention relates to the technical field of hydraulic valves, and discloses an integrated safety hydraulic control one-way valve integrated with a tail beam telescopic cylinder, which comprises a valve body, a through main channel arranged in the valve body and a valve core assembly arranged in the main channel, the valve core assembly comprises a joint valve sleeve, a valve core spring, a valve core, a valve seat, a liquid inlet valve sleeve, an ejector rod spring and an ejector rod, the valve seat is arranged between the connector valve sleeve and the liquid inlet valve sleeve, the valve element is arranged in an inner cavity of the connector valve sleeve in a sliding mode, and the ejector rod is arranged on the axis extension line of the valve element. The valve element is of a primary-secondary valve structure and comprises a main valve element and a pilot valve element coaxially arranged in the main valve element, an axial guide inner cavity is formed in the center of the interior of the main valve element and comprises a damping cavity and a conical surface plugging cavity, and a pilot valve channel is formed in the wall of the damping cavity. The problem that a valve element of a traditional hydraulic control one-way valve rapidly moves at the hydraulic control opening moment to generate severe mechanical impact is solved, and the service life of a valve set is prolonged.

The device for varying the incline of photovoltaic power generation inclination by using fluid thermal expansion of the present invention comprises a thermal expansion cylinder device and an automatic deviation correction device for simultaneously correcting deviations of the height and inclination angle of a photovoltaic panel. The thermal expansion cylinder device is composed of a thermal expansion fluid, a main piston, and a cylinder. The cylinder interior is filled with the thermal expansion fluid, the volume of which expands or contracts according to the temperature, thereby moving the main piston in the longitudinal direction. The linear displacement of the thermal expansion cylinder device installed between the photovoltaic panel and a fixed structure contracts when the ambient temperature is low (for example, winter solstice), thereby increasing the angle of inclination of the photovoltaic panel, and the linear displacement of the thermal expansion cylinder device expands when the temperature is high (for example, summer solstice), thereby lowering the angle of inclination of the photovoltaic panel. The automatic deviation correction device comprises an expanded volume accommodation device, a spring, an auxiliary piston, a check valve, and a pushrod. The forward movement length of the main piston is limited after summer solstice when the upper limit setting value is set. The check valve is opened by the thermal expansion fluid pressure such that the fluid flows into an excess expanded volume accommodation device. The auxiliary piston moves backward and compresses the spring, and when the temperature descends again after the highest temperature has been reached, the check valve is closed by the spring elastic force and pressure deviation.

A working vehicle includes an electric storage device; a traction motor configured to propel the working vehicle and to generate electrical energy when braking; a hydraulic system including a hydraulic pump driven by a load motor, a hydraulic actuator and a control valve; and a control system. The control system is configured to determine a state of charge of the electric storage device; induce additional load on the hydraulic system by directing the load motor to drive the hydraulic pump and actuating the control valve to direct flow of hydraulic fluid to the hydraulic actuator when the state of charge is at or above a predetermined threshold.

The invention relates to the field of valve sealing structures, and particularly discloses an aircraft pneumatic electromagnetic valve sealing structure and a machining method thereof.The aircraft pneumatic electromagnetic valve sealing structure comprises a sealing structure body, a side wall groove is formed in one end of the sealing structure body, and the sealing structure body comprises any one of a first sealing structure and a second sealing structure; according to the first sealing structure, a plurality of annular bionic grooves which are arranged up and down are formed in the inner circumferential face of the side wall groove, and a plurality of concentrically-distributed annular bionic grooves are formed in the bottom end face of the side wall groove. According to the second sealing structure, a plurality of linear bionic grooves which are distributed in a circumferential array mode are formed in the inner circumferential face of the side wall groove, and a plurality of divergently-distributed linear bionic grooves are formed in the bottom end face of the side wall groove. According to the method, the micro-nano bionic sealing structure is machined on the electromagnetic valve sealing surface through the femtosecond laser micro-nano machining technology, the roughness consistency and the bonding strength of the rubber bonding surface of the pneumatic sealing element are improved, the sealing performance of the pneumatic element is guaranteed, and the reliability of an airplane emergency control system is guaranteed.

A modular manifold system for connection to a header pipe. The modular manifold system includes a central hub which has a header pipe connection, a conduit connection arrangement arranged on the central hub, and a module connection arrangement arranged on the central hub. The header pipe connection defines a flow port which permits a fluid communication between the header pipe and the central hub. The conduit connection arrangement has a conduit connected thereto and defines a flow port which permits a fluid communication between the central hub and the conduit connected to conduit connection arrangement. The module connection arrangement defines a flow port which permits a fluid communication between the central hub and a connected module.

According to the multi-way valve for the ocean platform and the control method, joint grooves are formed in the positions, corresponding to bowl structures, of the inner wall of a valve body, and the bowl structures are connected to side connecting pipes in a swinging mode; according to the multi-way valve for the ocean platform and the control method, the elastic piece presses the bowl structure to the joint groove, and sealing force and reset force are provided; a pneumatic or hydraulic telescopic drive for driving the inner connecting pipe is arranged on the plug cock, and a working pipeline of the telescopic drive is communicated to the outside of the valve body along the upper end of the plug cock, so that an air source or a hydraulic source is arranged outside the valve body to control the telescopic drive to be butted with the bowl structure; in the working process, the sensing part is installed at the position of the side pipe part to test the dynamic state of the bowl structure, the rotating driver is started to work and transferred to the position of the side pipe part with the sensing part, the telescopic driver is controlled to work, and at the moment, the synchronization performance of pressure sensing data of the four pressure sensors directly reflects the butt joint state between the inner connecting pipe on the cock and the bowl structure; abnormality of the rotation angle or the installation angle of the side pipe part is reflected.

A hydraulic circuit includes a first oil path, a second oil path, a hydraulic control circuit, a third oil path, a check valve, and a relief valve. The first oil path links to a discharge port of a first oil pump. The second oil path links to a discharge port of a second oil pump. In the hydraulic control circuit, a first regulator valve is disposed downstream of a confluence point of the first oil path and the second oil path. The third oil path connects a suction port of the first oil pump and a strainer. The check valve is provided in the third oil path and restricts a movement of oil toward the strainer side. The relief valve is provided in the third oil path and discharges oil in the third oil path to an outside when a pressure in the third oil path exceeds a reference pressure.