324results about How to "Slow down" patented technology

An atomic vapor cell apparatus and method for obtaining spin polarized vapor of alkali atoms with relaxation times in excess of one minute is provided. The interior wall of the vapor cell is coated with an alkene-based material. The preferred coatings are alkenes ranging from C18 to C30 and C20-C24 are particularly preferred. These alkene coating materials, can support approximately 1,000,000 alkali-wall collisions before depolarizing an alkali atom, an improvement by roughly a factor of 100 over traditional alkane-based coatings. Further, the method involves a combination of one or more of the following: the use of a locking device to isolate the atoms in the volume of the vapor cell from the sidearm used as a reservoir for the alkali metal vapor source, careful management of magnetic-field gradients, and the use of the spin-exchange-relaxation-free (SERF) technique for suppressing spin-exchange relaxation.

A salad, rice and other foods washer and spinner includes an angled bowl and cover with a cranking handle that turns a basket and basket lid inside the bowl via a gear set. A twin speed gear set is disclosed which allows a different velocity of spin when the cranking handle is turned in one direction than when it is turned in the other direction. A bowl is angled with respect to a base member and a covering lid includes water inlet on a higher side of the lid that allows water from a faucet or jug to be directed through the cover and onto the basket lid where it is dispersed into the basket volume via holes in the basket lid, with water escaping, if desired through an outlet grille.

There is disclosed an apparatus for implementing special mode playback operations in a digital video recorder. The apparatus comprises an Intra frame indexing device capable of receiving an incoming MPEG video stream and identifying therein data packets associated with Intra frames, wherein the Intra frame indexing device modifies header information in a first data packet associated with a first Intra frame to include location information identifying a storage address of a second data packet associated with a second Intra frame.

The invention relates to a load follow-up loading system for plane flap reliability tests. The system comprises a bearing wall. The system is characterized by further comprising a support component, a load loading adjusting unit and a load detection and adjusting unit, wherein a flap is mounted on a wing; the root of the wing is mounted on the bearing wall; the support component comprises two vertical columns and a transverse beam for supporting the load loading adjusting unit and the load detection and adjusting unit; the load loading unit comprises a moment motor and a steel rope; the moment motor is arranged on the support component and is used for exerting an action force on the flap; the steel rope is connected with the moment motor; the load detection and adjusting unit comprises an angle sensor, a sliding track component and a pulley component. A plurality of loading points are arranged on the surface of the flap, one loading point corresponds to one set of loading system, the size, the direction and an equivalent action point of real-time flap surface aerodynamic force can be simulated.

The invention relates to an energy saving system of a belt conveyor and an energy-saving control method of the energy saving system of the belt conveyor. The energy saving system of the belt conveyor comprises a system starting button, a belt conveyer, a material detection device, a signal transformer, a belt conveyer drive motor, a frequency converter and a programmable controller. The belt conveyer is provided with a conveyer belt and the belt conveyer drive motor. The material detection device is installed right belowunder the conveyer belt and connected with the programmable controller through a signal line. The system starting button is connected with the programmable controller which is connected with the belt conveyer drive motor through the frequency converter by controlling the signal line. The belt conveyer system realizes the automatic control state of ''high speed with materials and low speed without materials''. According to the energy saving system of the belt conveyor and the energy-saving control method of the energy saving system of the belt conveyor provided by the invention, the idle time and idle energy consumption of the belt conveyer can be effectively reduced, so that the system mechanical loss generated in the time is reduced, the work efficiency is remarkably improved, the electric energy loss is reduced, and the purpose of saving energy and reducing consumption is realized.

A multi-layer laminate media is provided on which information may be applied in machine or human readable form on a visible front surface by the output of one or more lasers, or other high intensity light source. In a preferred embodiment, the media has three layers including a substrate, a thermochromic layer and a light absorbent layer located intermediate the media substrate and the thermochromic layer. The light absorbent layer is adapted to absorb light from the light source and convert the absorbed light into heat. The heat is immediately conducted into selected portions of the thermochromic layer which is in thermal contact with the light absorbent layer, causing portions of the thermochromic layer to change visual appearance such as color to create the desired mark. The media optimally includes obscuration materials to reduce the visibility of the light absorbent layer to the naked eye. The light absorbent layer is preferably a low cost absorber such as carbon black. An alternate form of the invention is a two layer laminate media including a substrate and a thermochromic layer. The invention is usable in conjunction with labeling produce items. The invention includes a method and apparatus for using media in conjunction with labeling produce items.

The invention discloses a wind tunnel model supporting device which comprises a movable platform, a clamping device, a first driving unit and a second driving unit, wherein the movable platform has three translational freedom degrees and at least one rotation freedom degree. The clamping device is connected with the movable platform and is used for fixing and supporting the model. The first driving unit and the second driving unit are arranged on the movable platform and used for driving the clamping device, and therefore, the clamping device obtains the freedom degrees of rotation in horizontal and transversal directions. The first driving unit comprises a first driving motor and a first rope traction mechanism. The second driving unit comprises a second driving motor and a second rope traction mechanism. The wind tunnel model supporting device with simple and reliable structure can realize six freedom degrees of the model in the wind tunnel test, effectively expand the model pitch and the roll amplitude capable of being realized by model supporting, and decrease the acceleration, the motion speed and the motion travel of the driving units through the first driving unit and second driving unit which are connected in parallel.

The invention provides a preparation method of a lithium ion battery positive pole piece (1). The preparation method at least comprises the following steps of firstly coating a lithium iron phosphate mixed stuff layer (12) on at least one surface of a current collector (11), and drying the lithium iron phosphate mixed stuff layer (12); then coating and drying an active coating (13) on the lithium ion phosphate mixed stuff layer (12) to prepare the lithium ion battery positive pole piece; the active coating is made of one or more of nickel cobalt lithium manganate, lithium manganate or lithium cobalt oxides. Under the condition that the conventional battery system is not changed, the lithium iron phosphate coating is previously coated on the positive current collector, so that the over-discharging prevention capacity of the nickel cobalt lithium manganate, the lithium manganate or the lithium cobalt oxides batteries can be improved, and the service life of the battery can be prolonged.

The invention belongs to the field of battery materials, and particularly relates to a cathode material for a lithium battery. The invention discloses a method for preparing a lithium titanate/titanium nitride composite material, which comprises the following steps of: grinding titanium dioxide serving as a titanium source, lithium titanate and solid nitrogen source uniformly in a disperse medium, drying at the temperature of between room temperature and 120 DEG C, and grinding; and firing under the protection of vacuum or inert gas, and then naturally cooling to obtain the lithium titanate/titanium nitride composite material, wherein the nitrogen source is selected from one or mixture of more than two (comprising two) of urea, biuret, cyanamide, dicyandiamide, melamine, cyanuric acid monamide and cyanuric acid diamide. The method for directly preparing the Li4Ti5O12/TiN composite electrode material by adding the solid nitrogen source into the raw materials for preparing Li4Ti5O12 does not increase the preparation process, has low cost, simple process and low energy consumption, and is easy to realize scale production.

The invention discloses a synchronizing system for multiple hydraulic cylinders and a control method for the synchronizing system for multiple hydraulic cylinders. The synchronizing system for multiple hydraulic cylinders, disclosed by the invention, includes two hydraulic control valves, three hydraulic cylinders and a rigid fixed connection mechanism, as well as a control unit and a feedback pressure sensor, wherein two of the hydraulic cylinders are reference hydraulic cylinders, and the other hydraulic cylinder is a servo hydraulic cylinder; the hydraulic control valve connected with the servo hydraulic cylinder is a servo hydraulic control valve; pressure of a reserved hydraulic chamber of the servo hydraulic cylinder is detected by a feedback pressure sensor; the control unit is in signal connection with an electric control end of the servo hydraulic control valve; the control unit can be used for confirming the servo pressure of the servo hydraulic cylinder as per a detection signal of the feedback pressure sensor, and reducing the opening degree of the servo hydraulic control valve connected with the servo hydraulic cylinder when the servo pressure of the servo hydraulic cylinder is larger than a first threshold value. The synchronizing system for multiple hydraulic cylinders can improve the synchronization precision of actions of multiple hydraulic cylinders while controlling the cost.

An air traffic system with upper railways and lower railways comprises train stations, supporting rods, railways, railway boxes, trains, a power supply system and a control system. The air traffic system with the upper railways and the lower railways is characterized in that the railways are divided into the upper railways and the lower railways, the upper railways are installed inside the railway boxes, the lower railways are installed on the supporting rods, the railway boxes are arranged in air between the two adjacent train stations by relying on the supporting rods, the railways are continuous curved railways, the supporting rods are connected with the railway boxes and the lower railways in a sliding mode, the trains are hanged below the upper railways and supported above the lower railways, the trains move along the railways by relying on the power supply system and the control system, and the change on the speed of the trains is achieved by utilizing the conversion between the potential energy and the kinetic energy, so that the trains are convenient to start and brake, and the purposes of energy conservation, consumption reduction and emission reduction are achieved. The air traffic system with the upper railways and the lower railways has the advantages that the air traffic system with the upper railways and the lower railways can be manufactured in low cost, short time and mass production, the going out efficiency of residents can be greatly improved, the going out cost can be lowered, and the problems of traffic congestion and environment pollution can be solved.

The invention relates to the field of metal pressure moulding and provides an overlarge type ring rolling machine which has large rolling force, good rigidity, high processing precision, high processing efficiency and low processing cost and can be suitable for the manufacturing requirement on a large cylindrical section. A stand of the overlarge type ring rolling machine comprises a drive side stand and an operating side stand which are longitudinally and oppositely arranged, both ends of each roll are supported, and axes are horizontally arranged; a drive roll is arranged at the lower part of the stand, and a core roll is positioned on the drive roll; at least one of double axial directions of the core roll is set to be a drawing direction of the core roll, one end of the core roll points to the other end along the drawing direction, the starting point end is a suspending end, and the terminal point end is a drawing end; a drawing unit comprises the core roll and a drawing end core roll bearing seat thereof or the core roll and core roll bearing seats at both ends of the core roll; the overlarge type ring rolling machine is provided with a roll drawing mechanism for doing reciprocating motion along the drawing direction of the core roll; and the roll drawing mechanism is provided with a detachable type fixing structure of the drawing unit. The invention is suitable for producing a large cylindrical section with large axial size, weight and wall thickness in the fields of large nuclear power, petrochemical container, aerospace, and the like.

The invention provides a temperature controlled and pressure controlled formation method of a lithium ion battery. The method comprises the step of performing a liquid injection and formation method on an assembled battery under the condition of controlling the temperature and pressure. The temperature controlled and pressure controlled formation method comprises multi-stage formation technologiesof low pressure formation, normal temperature formation and high temperature formation. The lithium ion battery acquired by the method is good in cycling life and high temperature stability.

The invention discloses a production technology for all-cotton yarn-dyed weaving surface and inner layer exchange dobby. The technology comprises a spooling process, a warping-sizing process, a drawing-in process and a weaving process. According to the production technology, a warping-sizing combined technology is adopted, the stability of the sizing percentage can be guaranteed through low-temperature sizing, and a sizing agent which is low in polymerization degree and low in viscosity is mainly used as the sizing agent for low-temperature sizing; the technology of being low in loom speed, early for opening, late for rapier feeding and low in back rest is adopted by a loom, and thus conditions are created for improving the quality of the product and the production efficiency of the loom. After the measures are taken, the problems emerging in the production process are well solved, and good economic benefits are achieved.

The invention discloses a hot bending furnace for colored glazing glass, a method for preparing hot-bent glass by using the hot bending furnace and the prepared colored glazing toughened hot-bent glass. The hot bending furnace comprises a furnace body (1), a push-pull base (2), an electric heating device (3) consisting of a fixed heating furnace wire (7) and a movable heating furnace wire (8), and an electrical appliance control device (4). In the process of performing hot bending treatment by using the hot bending furnace, the movable heating furnace wire (8) performs local auxiliary heating on the bending position of glass so as to ensure that the glass is completely attached to a mould at the bending position; the radius of a bending arc of the prepared colored glazing toughened hot-bent glass is less than or equal to 90mm, and the bending radian fully meets design requirements; multiple hot bending treatment such as single bending, continuous bending and the like can be realized; and the defects that the conventional hot-bent glass cannot be completely attached to the appropriate position of the mould, the prepared hot-bent glass has only one bending arc and the radius of the bending arc is more than 90mm are overcome.

The invention discloses a car window motor control circuit and method. When an MCU obtains that a vehicle window does not run to the position near the full-opening or full-closed position through a position sensor, the MCU is used for controlling the average voltage at the two ends of an car window motor to not change, so that the car window motor is kept at a set relatively high speed; when the MCU obtains the car window through the position sensor and reaches the full-opening or full-closed position, the MCU controls the average voltage at the two ends of the car window motor, so that the running speed of the car window motor is reduced, and the MCU controls the car window motor to run at a set relatively slow speed until the full-opening or full-closed position is completely closed andis blocked; and the MCU controls the car window motor to stop running when the MCU obtains a full-open or full-closed position through the position sensor. According to the car window motor control circuit and method, the impact sound of the car window glass and a car body metal plate is reduced when the car window glass runs to a fully-opened or fully-closed position, and the current is reduced when the car window glass runs to the full-opening or full-closed position.

This is a kind of riverbed and seabed bedload withholding, silt promoting and anti-scouring device belonging to the water conservancy technologic field. The present invention includes: floating shade, floating body, sand permeating window and anchoring member. The floating body is equipped at the upper of the floating shade, the sand permeating window is equipped at the bottom of the floating shade, and the anchoring member is equipped at the lower part of the floating shade. The water preventing effect of the present invention is small, not flood detention, won't minify the moving motivity of silt, and won't change the original flowing direction. Therefore it will become a kind of effective silt promoting device with good flood preventing effect, little change of sideway flowing field, and without obvious partial scour.

The invention discloses an automatic cutter for optical fibers. The cutter comprises a base for installing the optical fibers, a small press plate, a large press plate and an optical fiber cutting device, wherein the small and large press plates are used for clamping the optical fibers, and the optical fiber cutting device is used for cutting the optical fibers automatically after the large press plate clamps the optical fibers. A button is connected with a hinge shaft of the large press plate with a spring arranged in the middle, so that when an upper rubber mat of the large press plate and a lower rubber mat of the base are closed, the pressure to the optical fibers between the rubber mats is maintained, the button touches a pressure head to drive a press shaft to move downwards and is pushed out of a fixed piece, a slide block moves under the action of a compressed spring and cuts the optical fibers. Actions of the mechanism are flexible and gaps are small due to adoption of the double-shaft slide block supported by three linear bearings, the action accuracy of the slide block is improved, a damping sleeve is disposed on a lower optical shaft, the operating speed of the slide block is reduced, impact of a blade during cutting of the optical fibers is reduced, cutting quality of the optical fibers is improved, gaps can be eliminated, and deflection of the slide block during motion is reduced.

[Technical Problem] To provide an engine capable of increasing an introducing amount of an EGR gas without reducing an introducing amount of a fresh air.

[Means for Solving the Problems] In an engine structured to introduce a fresh air and an EGR gas into a cylinder, the EGR gas is introduced into the cylinder at least at a part of a compression stroke using a pressure in a combustion chamber at least at a part of a power stroke.

The invention relates to a preparation method of non-pickling raw kaolin ore. The method comprises the following steps of: (A) grinding and screening raw kaolin ore to obtain a raw screening material; (B) pouring the raw screening material into a special proportioning device and a container; and (C) sequentially carrying out the following steps in the container: forcefully stirring to prepare slurry; precipitating and separating; eddying and separating; blanching to remove iron; precipitating and dewatering; pressing the slurry and filtering water; detecting indexes; and obtaining kaolin concentrate. The former three steps (A), (B) and (C) form a necessary process for obtaining the kaolin concentrate, a strong reducing agent used in the step (C) has higher reduction potential compared with the traditional hydrosulfite and low declination speed of the reduction potential to be only 1/5 the declination number of the reduction potential of the traditional hydrosulfite, and the step enhances the effect of removing coloring impurities in the kaolin. Moreover, the reducing agent has the action of controlling reduction and has the advantages of good safety performance, pollution-free production and use, high iron-removal rate, and the like.

The invention discloses a coil-well resident building elevator. The coil-well resident building elevator is provided with a track beam, a lifting-pulling device, a lifting-pulling rope, a track device, a slideway, a pulley device, a manned device and a braking mechanism, wherein the track beam is arranged below a roof panel on a topmost layer on the upper part of the central surface of a stair wheel; the lifting-pulling device is movably arranged on the track beam; the upper end of the lifting-pulling rope is connected with the lifting-pulling device; the track device is arranged on the lower edge of a stair board above a stair railing or on the inner side face of the stair board around the stair well; brackets are positioned on the stair railing and a railing upright post; the slideway is arranged on the outer side of the raining upright post below the stair railing; the pulley device is movably arranged on the track device; the manned device is connected to the lower end of the pulley device; the side face of the manned device is connected with the slideway in a sliding way; and the braking mechanism is arranged between the pulley device and the track device, and is used for braking the pulley device and stopping the elevator under the control of a brake handle and a control device. The coil-well resident building elevator has the advantages of no need of any special channel, no occupation of the building area, simple equipment, convenience in installing and low cost on building and running, and is suitable for multi-story buildings, in particular for built powerless multi-floor buildings.

The invention discloses a normally-open one-way explosion-proof valve which is characterized by comprising a valve body, a valve clack, a magnet, a guide plate and a pipe flange; the valve clack is connected with the guide plate; the pipe flange comprises a pipe flange bevel; in a normal state, the valve clack is attracted to the magnet under the function of the magnet, and is away from the pipe flange bevel; and when an explosion occurs, the valve clack is subjected to impacting of explosion impact waves, the guide plate and the valve clack are pushed, the valve clack is attached to the pipe flange bevel, accordingly mechanical seal is formed, and the one-way explosion-proof valve is closed. The normally-open one-way explosion-proof valve can be used for preventing the impact waves and flames generated by the explosion from spreading, through a pipeline, towards the upper stream of dedusting equipment, a secondary explosion is avoided, and personnel and equipment safety is ensured.

The invention discloses an aerial radio monitoring intelligent robot. A receiving antenna, an electronic compass, a radio monitoring receiving unit, a central processing unit, a flight control module and a navigation module are all installed on a robot body. The central processing unit is connected with the flight control module, the electronic compass and the radio monitoring receiving unit. The navigation module is connected with the flight control module. The receiving antenna is connected with the radio monitoring receiving unit. The central processing unit firstly measures the direction of a radio signal source, then controls the robot body to fly through the flight control unit according to a direction measurement result and finally calculates the position of the radio signal source according to data further monitored on a flight track. According to the aerial radio monitoring intelligent robot, the navigation module is connected with the flight control module, and in-chip transmission is conducted on position information, so that pose correction instantaneity is improved, the error rate is reduced, influences of more modules are avoided, the safety of an aircraft is guaranteed, and the fault probability is reduced.

The invention relates to the field of textile machines, in particular to an automatic double-track screen printing device transmitted through connecting rods. The automatic double-track screen printing device comprises printing tables used for supporting printed materials, and a track which is used for supporting the printing tables and moves forwards along the path of the track. The track is of the double-track structure of an inner track and an outer track which are arranged in an equally spaced mode, and the track is in the shape of a closed curve with the end portions being semicircular and the middle being straight. Two sets of bearings are arranged on the bottom faces of the printing tables, one set of bearings is clamped on the two sides of the outer track, and the other set of bearings is clamped on the two sides of the inner track. Two adjacent printing tables are hinged through one connecting rod, and the connecting rod is placed on the inner side of the inner track. According to the automatic double-track screen printing device, the transmission structure of the double tracks together with the connecting rods is adopted, compared with a traditional connection transmission structure of a single track together with a chain, the connecting structure is greatly simplified, and the movement velocity is low; due to good rigidity of the connecting rods, the tables can not shake easily, movement is more stable, and printing precision is higher; the bearing sets are arranged so that running noise can be lowered, and the impact of the tables is reduced when the tables pass through the arc outer track.

The invention discloses a hemostasis rescuing device for cardiology clinic with a function of buffering protection. The hemostasis rescuing device comprises an upper pressing plate, a lower pressing plate, supporting plates and a bottom plate, the lower pressing plate is fixedly connected through two supporting plates, an upper pressing groove is formed in the upper pressing plate, a lower pressing groove is formed in the lower pressing plate, hemostasis pads are arranged in the upper pressing groove and the lower pressing groove, buffering protection devices are arranged between the lower pressing groove and each hemostasis pad. Each buffering protection device comprises a mounting column. The hemostasis rescuing device disclosed by the invention has the beneficial effects that a buffering column drives a moving plate to move downwards, the moving plate extrudes hydraulic oil, the hydraulic oil moves upward slowly through through holes so that the movement speed of the moving plate islowered, and the buffering function to hands or legs is effectively improved; a first bevel gear drives a threaded rod to rotate, because a lifting column cannot rotate, the lifting column moves downwards under the action of the threaded rod to drive the upper pressing plate to move downwards, the bleeding part is pressed tightly, the hemostasis is realized rapidly, and the hemostasis effect is effectively improved.

The invention belongs to the technical field of unmanned driving and discloses a multiple sensor-integrated medium-speed unmanned vehicle detection and obstacle avoidance system, which comprises a control system, a vehicle roof laser radar, a vehicle-mounted monocular vision camera, a front laser radar group and a rear laser radar group, wherein the vehicle roof laser radar is used for detecting ups and downs of a road in front of the unmanned vehicle and together with the front laser radar group, detecting the obstacle condition in a front motion path of the unmanned vehicle; the front laserradar group is also used for detecting the obstacle condition in a left front motion path and a right front motion path of the unmanned vehicle; the rear laser radar group is used for detecting the obstacle condition in the rear side of the unmanned vehicle; the vehicle-mounted monocular vision camera is used for recognizing a sign in front of the unmanned vehicle and together with the vehicle roof laser radar and the front laser radar group in match, detecting the obstacle condition; and the control system comprises an upper computer and a lower computer; and the lower computer is a dual-corecontroller formed by an FPGA and an ARM. The price is low, the cost performance is relatively high, and the practicability is strong.

A braking pedal feel simulating device of an automobile brake-by-wire system comprises a braking pedal, a pedal controlling arm, a pedal shaft, a pedal fixing support, a torsion spring, a pedal angle displacement sensor, a pedal force sensor and a pedal feel simulator. The braking pedal is fixedly connected with the pedal controlling arm, a round hole is processed at the upper end of the pedal controlling arm which is rotatably connected with the pedal shaft, the pedal shaft is mounted in a mounting hole of the pedal fixing support, a guide small hole is formed in the pedal fixing support, the diameter of the guide small hole is in interference fit with the outer diameter of a pushing rod, the torsion spring is cylindrical and is sleeved on the pedal shaft in a hollow manner, one end of the torsion spring is fixedly connected on the pedal fixing support while the other end of the same is connected on the pedal controlling arm, the torsion spring reverses and generates spring force along with rotating of the pedal controlling arm, the pedal angle displacement sensor is mounted in the round hole at the upper end of the pedal controlling arm, the pedal force sensor is mounted on the braking pedal, and the front end of a pushing rod of the pedal feed simulator is rotatably connected with the pedal controlling arm.

The invention discloses a method for testing the bearing capacity of a foundation pile with a dynamic stage loading method. The method comprises the following steps: axially applying dynamic load to the pile top of the foundation pile in a multi-stage manner, reporting the load, displacement and acceleration caused by the mass points of the pile body of the foundation pile being impacted in real time, and then analyzing the reported load, displacement and acceleration data to judge the vertical compression bearing capacity of the foundation pile. The dynamic stage loading method adopts progressive increase of equal-potential energy or progressive increase of load magnitude. A result analysis method comprises the following steps: obtaining the relationship between static resistance deducting dynamic resistance and inertia force under the dynamic stage loading action and pile top settlement, finally synthesizing the relationship between the static resistance of the pile top under east-stage loading action and the settlement, and therefore obtaining a final comprehensive relationship chart of load and settlement; determining the maximum bearing capacity of the pile according to the change condition of loading and settlement. Compared with a static load method, the method has the advantages of being short in a test cycle and high in testing efficiency, and the testing cost is reduced; the result is closer to the effect of the actual bearing capacity of the foundation pile, the test result is more accurate, and the method is efficient.

The invention discloses an electro-hydraulic variable valve system with one-way throttle valves with the buffering effect. The electro-hydraulic variable valve system comprises an engine valve executing mechanism, a high-pressure liquid source and a hydraulic drive control system; the high-pressure liquid source is composed of oil tanks, an oil pump, a motor, a filter, an overflow valve, a one-way valve and an energy accumulator and provides hydraulic oil with stable oil pressure for the hydraulic drive control system; the hydraulic drive control system is composed of a three-position four-way solenoid valve, the one-way throttle valves and an electronic control unit, and opening and falling of a valve can be realized by controlling reversing of the three-position four-way solenoid valve; by controlling the throttling parameters of the one-way throttle valves, the flow of a hydraulic system can be reduced, the motion speed of a piston rod can be lowered, and the opening process and the falling process of the valve can be buffered; and finally the motion characteristic of accelerated opening-decelerated opening-opening maintaining-accelerated falling-slow falling-stable settling down of the valve can be realized.

The invention discloses an intelligent adjustment type heat dissipation method and system for a high-voltage frequency converter. The intelligent adjustment type heat dissipation method for the high-voltage frequency converter comprises the steps that (1) a temperature signal of an IGBT is detected in real time, and the temperature signal of the IGBT is converted into a digital signal to be output after shaping and filtering are conducted on the temperature signal; (2) the temperature signal of the IGBT is received and is judged, and when the temperature value is smaller than a preset smallest temperature value, a radiator is controlled to operate at a preset lowest operation frequency; when the temperature value is larger than a preset largest temperature value, the radiator is controlled to operate at a preset highest operation frequency; when the temperature value is between the preset largest temperature value and the preset smallest temperature value, the target operation frequency of the radiator is calculated, and the radiator is controlled to operate at the target operation frequency. The intelligent adjustment type heat dissipation system for the high-voltage frequency converter comprises a first module used for detecting the temperature signal of the IGBT in real time and a second module used for controlling the radiator to operate. The intelligent adjustment type heat dissipation method and system for the high-voltage frequency converter have the advantages that the method is easy to realize, energy consumption is small, the utilization rate of heat dissipation power is high, the noise is low, and intelligent adjustment can be achieved.