2483 results about "Safety valve" patented technology

The invention provides a nuclear power safety valve remote monitoring and fault diagnosis method and system, and the method comprises the steps: obtaining multi-modal data collected through a sensor array; performing preprocessing and feature extraction on the multi-modal data to obtain various features of the multi-modal data; the fault type of the nuclear power safety valve is predicted based on the multiple features in combination with a CNN-LSTM hybrid model, and a preliminary fault type prediction result is obtained; and performing fuzzy logic optimization on the preliminary fault type prediction result to obtain a final fault type prediction result, and performing real-time alarm according to the final fault type prediction result. Relevant parameters of the parameterized three-dimensional digital twinborn model of the nuclear power safety valve are obtained in real time, and data of the parameterized three-dimensional digital twinborn model of the nuclear power safety valve are updated through the relevant parameters; through the parameterized three-dimensional digital twinborn model of the nuclear power safety valve, the operation and maintenance information of the fault part corresponding to the final fault type prediction result is visualized, and the accuracy, comprehensiveness and operation and maintenance assistance of fault prediction are improved.

The low-temperature safety valve comprises a valve body shell composed of an installation section, a pressure relief section and a reset section, a pressure relief pipe is fixedly installed on the side face of the pressure relief section, a transversely-arranged partition plate is fixedly installed in the pressure relief section, a heat preservation material is arranged in the pressure relief section, and a communicating hole is formed in the middle of the partition plate; a sealing block matched with the communicating hole is arranged in the pressure relief section, a connecting valve rod is fixedly installed on the upper surface of the sealing block, and a reset spring located on the inner side of the reset section is fixedly installed at the upper end of the connecting valve rod. According to the low-temperature safety valve with the leakage alarm function, the device is integrally installed in a pipeline system through a flange structure of the installation section, when the pressure reaches a set value, the sealing block is jacked up, the purpose of automatic pressure relief is achieved, and in the process, a gas sensor outside the pressure relief section is used for detecting surrounding gas, so that whether gas leakage exists at the joint or not is judged; and a wireless signal is transmitted to a computer so as to achieve the purpose of automatic alarm.

Provided is a safety valve, a well system, and a method. The safety valve, in one aspect, includes a first portion, the first portion including a safety valve sub having a sliding sleeve, the first portion configured to be run-in-hole as part of wellbore tubing. The safety valve, in accordance with this aspect, further includes a second portion, the second portion configured to be run-in-hole after the first portion. The safety valve, in accordance with this aspect, further includes a third portion, the third portion including a mechanical connecting apparatus, the third portion configured to be run-in-hole after the second portion, the mechanical connecting apparatus configured to couple with the sliding sleeve of the first portion and the bore flow management actuator of the second portion to axially fix together the sliding sleeve and at least a portion of the bore flow management actuator.

The invention relates to the technical field of safety valve fault monitoring, in particular to a safety valve full-life-cycle fault detection method and system, and aims to solve the problems that sudden safety accidents occur frequently due to the fact that a traditional method depends on leakage flow monitoring and cannot capture hidden faults such as valve element jamming and spring fatigue, a power supply system mostly adopts a single power generation mode, and the power consumption is low. In a low discharge scene, the electric quantity of the energy storage module is used up, and monitoring interruption is caused. According to the invention, the problems of safety valve hidden fault monitoring deficiency and unstable power supply are effectively solved. By means of multi-dimensional data collection, spring elasticity attenuation and valve element movement abnormity can be found in advance, and faults are prevented from being evolved into serious leakage. The composite power supply system maintains basic monitoring in the non-discharge stage, energy is quickly supplemented in the discharge stage, and continuous operation of the whole life cycle is guaranteed. A model analysis result can guide maintenance personnel to accurately position a fault part, and unnecessary shutdown maintenance is reduced.

A subsurface safety valve for a wellbore for production of fluids from a subsurface formation comprises a drive portion and an actuator portion. The drive portion comprises a first magnet assembly and the actuator portion comprises a second magnet assembly that is magnetically coupled to the first magnet assembly. At least one of the first magnet assembly or the second magnet assembly comprises a spatially rotated array of magnets arranged such that a magnetic field emitted from an operative side of the spatially rotated array of magnets facing a magnetic coupling is non-zero and such that the magnetic field emitted from a non-operative side of the spatially rotated array of magnets that is opposite the operative side is about zero.

The utility model relates to a safety valve. A safety valve comprises a valve body, a water inlet is formed in the lower end of the valve body, and a pressure relief opening is formed in the right end of the valve body. A hollow diaphragm is arranged in the valve body, a piston is arranged in the diaphragm, a spring is arranged in the piston, a spring support is arranged in the spring, and a valve bonnet is arranged at the upper end of the spring support. Under the action of the spring, the diaphragm can move up and down, so that the water inlet is closed and opened. An annular boss is arranged at the bottom in the valve body, and the outer wall of the upper end of the annular boss is designed to be an annular conical face with the small upper portion and the large lower portion. According to the structure, when the safety valve is opened, the gap between the annular boss and the diaphragm can be increased, and the flow of water flowing through is remarkably increased, so that the pressure relief capacity of the safety valve is improved, and the safety of a pipeline is guaranteed. The safety valve is optimized in structure and reliable in performance, and solves the problems that in the prior art, pressure relief performance is insufficient, installation and adjustment are inconvenient, and sealing performance is poor.

The invention discloses an integrated electro-hydraulic driving unit of a marine anchor and mooring machine. The integrated electro-hydraulic driving unit comprises an oil supplementing system, a main driving system, a control system, a safety system and a hydraulic motor, an oil supplementing pump in the oil supplementing system is connected with an oil drainage tank and communicated with a pressure oil tank in the main driving system, the pressure oil tank is communicated with a main pump in the main driving system through two third one-way valves, a port A and a port B of the main pump are communicated with a port A and a port B of a hydraulic motor respectively, and one ends of two safety valves in the safety system are connected with the port A and the port B of the main pump respectively. The other ends of the two safety valves are connected in parallel to a pipeline between the oil outlet of the pressure oil tank and the inlets of the two third one-way valves; a controller of the control system is in electric signal connection with the main motor; and an output shaft of the hydraulic motor is connected with an input shaft of the anchor windlass. Therefore, according to the design, the hydraulic pump station, the control valve and the hydraulic motor can be integrated, and the integration degree is high.

Provided is a smart gas Internet of Things (IoT) system for gas safety management. The system includes a smart gas user platform, a smart gas service platform, a smart gas safety management platform, a smart gas indoor device sensing network platform, and a smart gas indoor device object platform. The smart gas user platform is configured as a terminal device; the smart gas indoor device sensing network platform is configured as a plurality of groups of gateway servers or a plurality of groups of intelligent routers; the smart gas indoor device object platform includes a safety valve control device object sub-platform, the safety valve control device object sub-platform is configured as indoor gas devices and gas safety detection devices; and the smart gas safety management platform includes a smart gas indoor safety management sub-platform and a smart gas data center.

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 discloses a safety valve service life evaluation method based on pressure history statistics and dynamic damage accumulation. According to the method, only safety valve inlet pressure time sequence data is needed, a load cycle is extracted through an improved rain flow counting method, and the nonlinear damage increment is calculated according to an S-N curve model dynamically degraded along with the accumulated damage degree. According to the method, a self-adaptive failure probability threshold is established based on historical failure data, and probabilistic prediction of the residual life is realized. The model is clear in physical significance, only needs a single data source, significantly reduces the implementation complexity and cost, greatly improves the precision of life prediction by considering the degradation of material performance, and is especially suitable for predicting the accelerated failure risk of the safety valve in the later period of long-term service.

The invention discloses an AI-assisted self-adaptive control method and system for a gas safety valve, and relates to the technical field of gas safety control, and the method comprises the following steps: connecting the output end of an SEPIC circuit containing a continuous current mode and a discontinuous current mode with a coil of the gas safety valve; according to preset electrical and gas safety indexes, asynchronous data acquisition is carried out on the electrical and gas safety indexes, and an electrical and gas safety index sequence is obtained; utilizing an AI fusion analyzer on the edge MCU to perform interactive feature fusion analysis on the two types of sequences, and determining a self-adaptive control scheme of the gas safety valve; circuit modes are switched based on the control scheme, and the safety valve is driven to execute according to the switched SEPIC circuit. The technical problems that in traditional gas safety valve control, electric parameters and gas safety indexes are analyzed in a split mode, the circuit operation mode is single, and control response is inaccurate are solved, and the technical effects that efficient and reliable self-adaptive driving of the gas safety valve is achieved, and gas use safety and control flexibility are improved are achieved.

The invention discloses a hydrogen charging system and method for a magnesium-based solid hydrogen storage reaction kettle. A hydrogen storage tank is placed in each placement position in an inner cavity of the reaction kettle, and a heat exchange coil pipe is arranged outside each placement position; the hydrogen charging system comprises a hydrogen charging part, a temperature control part and a safety protection part; the hydrogen filling part comprises a hydrogen filling main pipeline; a hydrogen flow controller and a hydrogen heat exchanger are arranged on the hydrogen filling main pipeline; the temperature control part comprises an external heat-conducting oil circulating system, the external heat-conducting oil circulating system comprises a heat-conducting oil tank, a flow bypass pipeline is arranged between the oil inlet pipeline and the oil return pipeline, and a heat-conducting oil shunting automatic switch valve is arranged on the flow bypass pipeline; the safety protection part comprises a safety valve arranged on the reaction kettle, the safety valve is externally connected with an emptying pipeline, a pressure relief bypass pipeline is arranged between the emptying pipeline and the hydrogen filling main pipeline, and an automatic opening and closing pressure relief valve is arranged on the pressure relief bypass pipeline. The system has the advantages that the hydrogen storage tanks in the reaction kettle can be quickly and efficiently filled with hydrogen, and the safety of the system is ensured.

Provided is a magnet for use with an SSSV, an SSSV, a well system, and a method. The magnet, in one aspect, includes an electropermanent magnet. The magnet, in accordance with this aspect, further includes a self-powered protection circuit coupled to the electropermanent magnet, the self-powered protection circuit configured to switch the electropermanent magnet to the OFF state when the SSSV loses power.

The invention belongs to the technical field of compressed air control, and particularly relates to a compressed air energy storage power station multistage protection and controlled discharge control method and system. Comprising the steps that a compressed air energy storage power station system comprising a discharge bypass and a discharge valve and a safety valve which are arranged on the downstream of the discharge bypass is built; when pressure abnormity occurs, first-stage response is started, operation parameters of the compressed air energy storage power station system are adjusted, or a discharge bypass is started in an overlapped mode, and the pressure abnormity trend is restrained; when the first-stage response cannot restrain pressure abnormity, the second-stage response is started, the opening degree of the release valve is adjusted, and gas release is conducted; and when the second-level response cannot restrain pressure abnormity, third-level response is started, a stepped release sequence is adopted, the opening degree of a release valve is increased, meanwhile, the opening degree of a safety valve is gradually increased to conduct gas release, and finally final release is conducted by triggering a rupture disk. According to the invention, through a stepped control strategy, the defects that a single protection device is single in protection means and easy to over-excite protection are avoided.

The utility model provides a gas safety valve with a liquid blocking function under an inverted flight working condition of an airplane. The gas safety valve comprises an upper component and a lower component, the upper assembly comprises a shell, a lining, a sealing disc and a spring. The lower component comprises a sliding sleeve, a base, a first sealing ring and a second sealing ring; the upper component and the lower component are fixedly connected through a bolt, a gasket and a nut; the bushing is arranged in the center of the top of the shell; the end part of the sealing disc guide shaft penetrates through the center of the bushing; a sliding sleeve is arranged in the base. When the aircraft is in an inverted flying condition, the fuel tank can prevent fuel from flowing out of the fuel tank.

The utility model relates to the field of hydraulic servo systems, and discloses a safety valve group for a hydraulic servo system, which comprises a valve block and is characterized in that a servo valve is mounted on the upper surface of the valve block, and a first fully-adjustable throttle valve is mounted on the upper surface of the valve block close to the left end of the servo valve. A second full-adjustment type throttling valve is installed at the position, close to the right end of the servo valve, of the upper surface of the valve block, an electromagnetic direction valve is installed on the upper surface of the valve block, a first balance type normally-open logic valve is installed on the left surface of the valve block, and a first balance type normally-closed logic valve is installed on the left surface of the valve block. And a second balance type normally-closed logic valve is mounted on the right surface of the valve block. According to the utility model, by adopting a new oil way design, the whole device has the advantages of simple structure, small valve body size, safety, reliability and the like, and meanwhile, the whole device can take pressure relief protection measures on a system in time according to working conditions, so that the safety of system equipment and operators is guaranteed.

The invention discloses a gas appliance and a control method thereof. The gas appliance comprises an ignition coil and a thermocouple. The combination valve is arranged on a gas pipeline of the gas appliance, is used for opening or cutting off the gas pipeline between the gas source and the gas appliance, and comprises a user end and a gas source end; the combination valve comprises an electromagnetic valve and a gas safety valve, the electromagnetic valve is arranged between the gas safety valve and the gas source end, and the electromagnetic valve is electrically connected with an ignition coil and a thermocouple. The problems that a self-closing valve of an existing gas appliance is low in sensitivity, and trace leakage cannot be detected are solved.

The utility model discloses a mine paste filling powder batching device and method. The mine paste filling powder batching device comprises a silo, a silo top cover is arranged at the top of the silo, a dust remover and a safety valve are arranged on the silo top cover, a feeding port is formed in the upper portion of the silo and connected with a feeding pipe, and the bottom end of the silo is connected with an upper port of a silo cone. A lower port of the bin cone is connected with one end of a feeding pipe through a pneumatic butterfly valve A and a tubular flexible connector A, the other end of the feeding pipe is connected with a hopper top cover of a hopper barrel, the bottom end of the hopper barrel is connected with an upper port of a hopper cone, and a lower port of the hopper cone is connected with a feeding port of a spiral conveyor through a pneumatic butterfly valve B and a tubular flexible connector B; one end of the breathing pipe is connected with the side face of the feeding pipe, and the other end of the breathing pipe is connected with the hole opening of the hopper top cover; and a plurality of flow aiding devices are arranged on the cone wall of the bin cone and / or the cone wall of the hopper cone.

Provided is a safety valve, a well system, and a method. The safety valve, in one aspect, includes a first portion, the first portion including a safety valve sub having a pocket therein, the pocket including an electromagnetic assembly, one or more radial outer magnetic targets, and a magnetic target located therein. The safety valve, according to this aspect, further includes a second portion. The safety valve, according to this aspect, further includes a third portion, the third portion including a mechanical connecting apparatus having one or more radial inner magnetic targets associated therewith and configured to magnetically engage with the one or more radial outer magnetic targets, wherein at least one of the one or more radial inner magnetic targets or the one or more radial inner magnetic targets are one or more permanent magnets.

The utility model discloses a fuel gas heat conduction oil boiler, which relates to the technical field of oil boilers, and comprises a base, the upper side of the base is fixedly connected with a water suction pump, the input end of the water suction pump is fixedly connected with a water suction pipe, the output end of the water suction pump is fixedly connected with a plurality of supporting legs, and the upper side of the base is fixedly connected with a water inlet pipe. A boiler body is fixedly connected to the upper ends of the supporting legs, an air outlet valve is fixedly connected to the upper side of the outer wall of the boiler body, and a safety valve is fixedly connected to the upper side of the outer wall of the boiler body. Through the mutual cooperation of a filtering adsorption plate, a sliding groove, a push block, a sliding block, a limiting rod, a first spring, a first connecting plate and a U-shaped inserting plate, the filtering adsorption plate can be detached and replaced, the filtering effect of the device is improved, the emission of harmful substances in waste gas can be effectively reduced, the health of surrounding residents and workers can be protected, and the practicability is high. And respiratory system diseases or other health problems caused by inhalation of harmful gas are avoided.

The invention provides an integrated pressure protection double-layer corrugated pipe vibration reduction pipe, and belongs to the field of vibration absorbers. An interlayer cavity is formed in the pipe wall of the vibration reduction pipe; gap grooves are formed in the middles of the outer end faces of the flange plates, so that steps are formed on the outer end faces of the flange plates around the edge portions of the gap grooves, and inlet holes and outlet holes are formed in the gap grooves of the two flange plates respectively. The safety valve and the one-way valve are arranged in the interlayer cavity and connected to the inlet hole and the outlet hole, the safety valve allows or limits the medium to enter the interlayer cavity through the inlet hole according to whether the external pressure exceeds the preset pressure, and the one-way valve limits the medium to flow out of the interlayer cavity only through the outlet hole. The safety valve is arranged, so that a medium in the inner layer of the pipeline enters the interlayer cavity, the pressure value in the inner layer of the pipeline is reduced, the pressure of the medium is prevented from exceeding the yield limit of an inner-layer corrugated pipe material, and the medium entering the interlayer cavity can flow back to a low-pressure area through the one-way valve; and the safety and the reliability of the double-layer corrugated pipe vibration reduction pipeline are improved.

The invention provides an extra-high pressure safety valve off-line detection method and system, and belongs to the technical field of off-line detection, and the method comprises the steps: detection preparation, starting pressure detection, pressure maintaining performance detection and safety control, and in the detection process, if the system pressure exceeds an overpressure protection value, pressurization is automatically stopped, and an alarm is triggered. Through precise detection process, multi-dimensional safety guarantee and full-process data management and control, deep detection and reliable evaluation of the safety valve performance are realized, a defense line is built for safe operation of extra-high voltage equipment, and the system has significant practical value and technical advantages.

The invention discloses a low-pressure portable efficient hydrogen production device based on ammonia borane, which comprises a pressure-resistant and high-temperature-resistant cylindrical shell, an annular porous skeleton in which an efficient catalyst is embedded, a pluggable stirring module, a heating assembly, a gas exporting and purifying module, a safety monitoring assembly and the like, and relates to the technical field of hydrogen production equipment. According to the low-pressure portable efficient hydrogen production device based on ammonia borane, the shell has pressure-resistant and high-temperature-resistant performance, by adopting a special efficient catalyst, the pyrolysis reaction temperature of ammonia borane is reduced, the generation rate and yield of hydrogen are increased, efficient hydrogen production is achieved, the device is provided with a temperature sensor and a pressure safety valve, safety is guaranteed, and the device is suitable for popularization and application. The reaction product nitrogen boride can be utilized, key materials can be recycled and replaced regularly, the device is suitable for a robot with a body, a robot dog, an unmanned aerial vehicle, an emergency power supply and the like, hydrogen can be supplied integrally or in a distributed mode, and the problems that an existing hydrogen production device is low in efficiency, poor in portability, insufficient in safety and the like are effectively solved.

The invention discloses an ultrahigh-pressure hydraulic system for a gear press-fitting process and a control method. Comprising a servo motor, an ultrahigh pressure plunger pump, an oil tank, a safety valve, a first electromagnetic stop valve, a proportional overflow valve, a first pressure sensor, a second electromagnetic stop valve, a first throttling damper, a second throttling damper, a third throttling damper, a third electromagnetic stop valve, a fourth electromagnetic stop valve, an electromagnetic pressure retaining valve and a second pressure sensor. By controlling the overflow pressure of the proportional overflow valve, linear pressure loading and pressure relief of the tensioning tool at 0-70 MPa are achieved, on-off of the throttling dampers is controlled, the pump outlet flow is controlled by adjusting the rotating speed of the motor in a matched mode, the pressure difference of the throttling dampers is changed, and linear pressure loading and pressure relief of the tensioning tool at 70-200 MPa are achieved. The device can be used for a 200MPa ultrahigh-pressure hydraulic system, segmented adjustment of loading pressure is achieved, and the pressure increasing or reducing amplitude and slope of tensioning pressure within 0-200MPa can be controlled.

The utility model provides a safety valve mechanism which comprises a fixing plate. The fixing plate is of a strip-shaped frame structure, the limiting pin is inserted into the fixing plate, the cam drive is installed at the position, located at the inner end of the limiting pin, in the fixing plate, the limiting pin abuts against the cam drive, the rotating handle is installed outside the fixing plate, and the rotating handle coaxially drives the cam drive. The fixing plate is installed on the multi-penetrating goods shelf and right faces the front end of the layer-changing elevator, the limiting pin right faces the layer-changing elevator, and the rear end face of the layer-changing elevator is provided with a shifting rod capable of shifting the rotating handle. According to the utility model, a pure mechanical motion principle is adopted, the use cost can be reduced, the structural size can be changed according to the use precision requirement, the operation stability and safety are far better than those of an electric control structure taking a servo motor as a core, the use is convenient, and the operation is simple.

The invention relates to the technical field of vacuum equipment, in particular to a two-stage low-temperature vacuum pump which comprises a pump body and a pressurizing assembly, and a liquid adding cavity is formed in the pump body; the pressurizing assembly comprises an air cylinder, a movable part and a liquid discharging part, the air cylinder is coaxially located in the liquid adding cavity and is divided into a first-stage barrel and a second-stage barrel, one end of the first-stage barrel is connected to the pump body, the inner diameter of the second-stage barrel is smaller than that of the first-stage barrel, the movable part comprises a piston rod, a first-stage safety valve and a liquid outlet valve, and the piston rod sequentially penetrates through the pump body, the first-stage barrel and the second-stage barrel; the piston rod slides back and forth in the axis direction of the pump body, the piston rod, the primary safety valve and the primary barrel form a primary compression cavity, an injection port is formed in the end, close to the secondary barrel, of the primary barrel, the piston rod, the liquid outlet valve and the secondary barrel form a secondary compression cavity, and a runner hole is formed in the piston rod. The liquid discharging piece comprises a liquid discharging pipe and a liquid discharging valve, one end of the liquid discharging pipe communicates with the second-stage compression cavity, and the other end of the liquid discharging pipe is located outside the pump body; the device has the effect of conveniently solving the problem that impurities cannot be cleaned.

Provided is a safety valve, a well system, and a method. The safety valve, in one aspect, includes a first portion. The safety valve, according to this aspect, further includes a second portion, the second portion including a bore flow management actuator configured to slide from a first initial state to a first subsequent state to move a valve closure mechanism between a first closed state and a first open state. The safety valve, according to this aspect, further includes a third portion, the third portion including a mechanical connecting apparatus having one or more magnetic targets associated therewith, the one or more magnetic targets configured to magnetically engage with the electromagnetic assembly when the electromagnetic assembly is in an energized state to axially fix the bore flow management actuator in the first subsequent state.

The invention discloses a pipeline gas safety valve control method and system, and relates to the technical field of gas safety control, and the method comprises the following steps: obtaining the operation data of a gas pipeline, constructing a gas pipeline operation state portrait, extracting evolution characteristics, and generating an operation state characteristic vector; according to the running state feature vector, grading the running state, dynamically correcting a division threshold value according to historical running data, and outputting a corresponding safety valve control decision instruction; the safety valve is driven to execute opening and closing actions according to the safety valve control decision instruction, the consistency between the actual action state of the valve and the control instruction is verified, and valve execution result data is generated; writing back and updating the operation state feature construction process according to the valve execution result data; through the running state portrait and closed-loop feedback control, the problems that in traditional pipeline gas safety valve control, the control decision adaptability is not high, and the execution result lacks feedback are solved.

The invention relates to a valve arrangement (1; 81; 91) with several functional modules arranged in series from the group: valve disc group (8), safety valve group (7), throttle valve (171), wherein the valve disc group (8) has one or more valve discs (101, 102), each with at least one electrically controllable valve (103, 104) which is connected to an electrical supply line (17) and to a fluid supply line (18), wherein the throttle valve (171) is arranged upstream of the safety valve group (7) between a fluid connection (36) and the fluid supply line (18) of the valve disc group (8), wherein the safety valve group (7) has two safety valves (51, 52) which are designed to influence a fluid flow between the fluid connection (36) and the fluid supply line (18),wherein the safety control (7) is designed for the safety-oriented blocking of electrical control signals for the safety valves (51, 52), wherein the throttle valve is designed for a temporary reduction of a working pressure in the fluid supply line (18), and wherein a valve control (5) is designed to control the valve disc group (8) and the safety valve group (7).

The utility model discloses a control system of a transverse skin stretching pitching mechanism, which belongs to the technical field of skin stretching hydraulic machines and comprises a proportional servo valve, one end of the proportional servo valve is communicated with an oil tank, and the other end of the proportional servo valve is communicated with a counterbalance element. A check element is arranged between the proportional servo valve and the counterbalance element, one side of the check element is communicated with an electromagnetic reversing valve, the electromagnetic reversing valve is communicated with an oil tank, the counterbalance element is respectively communicated with a safety valve and a leak-free valve, one side of the leak-free valve is communicated with a supporting valve, and the supporting valve is communicated with the oil tank. A pressure sensing element and a shock-proof sensing element are further installed on one side of the counterbalance element, three stretch forming processes are provided for a pitching mechanism of the transverse skin stretch hydraulic press, and the use requirements of users for high efficiency and high quality are met.