61 results about "Gas lubrication" patented technology

The invention belongs to the technical field of casting, and particularly relates to novel aluminum alloy bar oil-gas lubrication casting equipment. When the whole dummy bar is lifted, due to the fact that the bar body is too long, the dummy bar is prone to shaking in the lifting process, if other parts of the device are impacted, the device is damaged, the service life of the device is shortened, and therefore the casting efficiency is reduced. Comprising a platform, and a lubricating casting mechanism is arranged on the platform; a connecting rod is mounted on the platform, and a winding lifting mechanism is connected to the connecting rod; the winding lifting mechanism comprises an auxiliary square plate connected with the connecting rods jointly, and a connecting clamping base is installed on the auxiliary square plate. By means of the directional attaching and stopping assembly, impact force generated by shaking of the dummy bar in the ascending process is counteracted with buffering force generated when the dummy bar makes contact with the buffering plate, the stability of the dummy bar in the ascending process is improved, the dummy bar is prevented from shaking and impacting the device in the ascending process, and therefore the service life of the device is prolonged, and the casting efficiency of the device is improved.

The invention discloses a plastic hollow plate shaping and cooling device and method, and belongs to the technical field of plastic hollow plate processing.The plastic hollow plate shaping and cooling device comprises a processing table, and a vacuum adsorption control system and an air floatation supporting control system are arranged at the two ends in the processing table respectively; two cooling mold mechanisms used for cooling the plastic hollow plate are arranged at the two ends of the top of the machining table, and a main cooling mechanism and an auxiliary cooling mechanism which are used for cooling are arranged on each of two molds of each cooling mold mechanism. Uniform negative pressure is formed through the vacuum grooves and the vacuum holes in the upper mold, a plate is forced to be attached to the cavity so as to guarantee the section shape, the lower mold forms air film support through the air injection grooves and the air injection micropores, the downward pulling force of vacuum adsorption and the gravity of the plate are counteracted, sliding friction between the plate and the lower mold is converted into gas lubrication friction, and the service life of the plate is prolonged. The problems that in a traditional shaping process, due to the fact that single-side adsorption force is too large, the top of a plate protrudes, and a hollow cavity collapses are solved.

The invention relates to the field of Stirling engines, and provides a Stirling engine oil-free lubrication cylinder sleeve and a Stirling engine, the Stirling engine oil-free lubrication cylinder sleeve comprises a cylinder sleeve body, and the inner hole wall of the cylinder sleeve body is divided into a high-speed section and low-speed sections located on the two sides of the high-speed section in the axial direction of the cylinder sleeve body; continuous net-shaped textures are arranged on the surface of the inner wall of the high-speed section, pit textures distributed in an array mode are arranged on the surface of the inner wall of the low-speed section, and the net-shaped textures and the pit textures form gradient surface textures in the axial direction of the cylinder sleeve body. The gradient surface texture is arranged on the inner surface of the cylinder sleeve according to the reciprocating speed characteristic of a piston, the high-speed section strengthens gas dynamic pressure bearing through the net-shaped texture, the low-speed section optimizes adhesion resistance and abrasive dust storage through the pit texture, the gas lubrication potential is fully released, friction reduction and service life prolonging of a dynamic sealing friction pair are achieved, and the service life is prolonged. The problems that a single surface structure of a traditional cylinder sleeve cannot be matched with the reciprocating speed difference of a piston, and the gas lubrication effect is insufficient are solved.

The invention discloses an intelligent cooling and lubricating system and method for a high-speed motorized spindle, and belongs to the technical field of high-speed motorized spindles. The system comprises a mechanical transmission core composed of a main shaft, a main shaft bearing, a main shaft motor stator and a main shaft motor rotor, a circulation heat dissipation unit composed of cooling liquid and a cooling liquid refrigerating machine, a lubrication adjusting module composed of a lubricating oil tank, an air refrigerating machine, a flow adjusting valve and an oil-gas mixer, a temperature sensor and a cooling lubrication control system. According to the system, the temperature of a spindle bearing and the temperature of a spindle motor stator are monitored in real time through a temperature sensor, and the cooling lubrication control system dynamically adjusts oil-gas lubrication parameters and cooling liquid parameters based on a preset heat production and dissipation model and a parameter classification method in combination with working condition parameters such as workpiece materials, tools and machining technologies; therefore, intelligent cooling and lubricating are achieved, bearing damage and thermal errors are effectively reduced, and complex working condition requirements are met.

The utility model discloses a high-speed oil-cooled motor capable of cooling a bearing. The high-speed oil-cooled motor comprises a cylindrical shell, a front end cover and a rear end cover. And a barrel shell channel is arranged on the barrel shell. The front end cover is provided with a front bearing cooling channel which is communicated with the cylindrical shell channel. The rear end cover is provided with a rear bearing cooling channel which is communicated with the cylindrical shell channel. According to the high-speed oil cooling motor capable of cooling the bearing, after the cooling liquid enters the motor, the cooling liquid sequentially flows through the front bearing cooling channel, the barrel shell channel and the rear bearing cooling channel to cool the bearing, the bearing does not need to be provided with an additional cooling device and does not make direct contact with the cooling liquid, the risk that the cooling liquid leaks from the bearing cavity is completely eradicated, and the service life of the bearing is prolonged. The bearing can be lubricated through grease lubrication or lifelong lubrication, a circulating oil lubrication or oil-gas lubrication system does not need to be arranged, the sealing requirement of a bearing cavity is lowered, the system structure is simplified, the reliability of the system is improved, and the complexity and cost of the system are lowered.

The utility model discloses a rolling mill capable of reducing oil spots on the surface of a rolled product, and relates to the technical field of rolling mills. The oil-gas lubricating system comprises an oil-gas lubricating disc and a high-level oil tank which are connected with each other, the oil-gas lubricating disc is connected with a compressed air generating device, and compressed air drives lubricating oil to the working rollers; the oil gas discharging system comprises an oil gas collecting cover, a smoke discharging pipeline and a smoke discharging fan, the oil gas collecting cover covers the working roller and is connected to the smoke discharging pipeline, and the other end of the smoke discharging pipeline is connected to the smoke discharging fan. By improving the structure, oil spots of rolled products are reduced.

The invention discloses a surface texturing piston ring based on a gas lubrication Stirling engine and a manufacturing method, the piston ring is made of a filled polytetrafluoroethylene material, and circular pit textures which are uniformly distributed are arranged on the sealing surface, used for forming dynamic sealing with a cylinder sleeve, of the piston ring; the radius of the circular pit texture ranges from 100 micrometers to 300 micrometers, the area occupancy of the circular pit texture on the sealing surface ranges from 10% to 40%, and the depth-diameter ratio ranges from 0.001 to 0.01. According to the method, by optimizing the geometrical parameters and the distribution form of the surface texture, enhancing the gas dynamic pressure bearing capacity and improving the piston ring-cylinder sleeve mixed lubrication condition, the problem that the piston ring is rapidly abraded and fails under the oil-free lubrication working condition is solved, the abrasion rate is reduced, the service life of a sealing piece is prolonged, and the reliability and the operation stability of the Stirling engine are improved.

The present invention discloses an oil and gas lubrication monitoring system based on near-infrared spectroscopy, comprising: a housing, an infrared emitting module, an infrared receiving module, a data acquisition card, and a computer. The housing is disposed at the end of the oil and gas lubrication pipeline, the infrared emitting module and the infrared receiving module are respectively mounted on the housing and disposed on opposite sides of the paint lubrication pipeline, the data acquisition card is respectively connected to the infrared receiving module and the computer, the infrared emitting module includes an infrared light source and a driving circuit, the infrared light source is connected to the driving circuit, and the infrared receiving module includes a photodetector, an amplifying circuit, and a filtering circuit, the amplifying circuit is respectively connected to the photodetector and the filtering circuit. The present invention reduces costs while making it easy to integrate the light source on a circuit board, resulting in a small size; adopts an infrared counter-radiation structure, has sensitive detection, and is very convenient to install; and monitors the operating status of the oil and gas lubrication system in real time online, promptly detecting faults and avoiding economic losses caused by insufficient lubrication of high-speed electric spindles.

The invention relates to a gas-lubricated slip ring seal assembly comprising: a slip ring seal (2) having a rotating slip ring (21) and a stationary slip ring (22) defining a first sealing gap (23) between sliding surfaces (21a), (22a); a barrier fluid system (100) configured to supply a barrier fluid to the sealing gap (23), in which the stationary slip ring (22) has a through-opening (25) for supplying the barrier fluid to the sealing gap (23) of the slip ring seal (2), in which the through-opening (25) leads from a rear side (22b) of the stationary slip ring (22) to the sliding surface (22a), wherein the barrier fluid system (100) comprises a supply passage (11) for a barrier fluid that directs the barrier fluid to a barrier fluid chamber (50) at a rear side (22b) of the stationary slip ring (22), the flow diode (110; 120); 130; 140) which has a first flow resistance in a first flow direction A from the barrier fluid system (100) towards the slip ring seal (2) and a second flow resistance in a second flow direction B opposite the first flow direction A from the slip ring seal towards the barrier fluid system (100), the first flow resistance being smaller than the second flow resistance, and wherein the flow diode is arranged in the supply passage (11) between the slip ring seal (2) and the barrier fluid system (100).

This invention provides a spindle lubrication structure and an electric spindle. The spindle lubrication structure includes a spindle core, on which a front end cover, a front end flange, a front bearing housing, a bushing, a rear bearing housing, a rear end flange, and a rear end piping disc are sequentially mounted. Multiple front bearing components are disposed between the front bearing housing and the spindle core, and a rear bearing component is disposed between the rear bearing housing and the spindle core. Multiple front lubrication channels are provided on the front bearing housing, each corresponding to one of the front bearing components. Multiple rear lubrication channels are provided on the rear bearing housing, each opposite to one of the rear bearing components. According to this invention, the technical problem of poor cooling efficiency caused by the spindle using a single inlet hole for oil and gas lubrication channel delivery in the prior art can be solved.

The invention belongs to the technical field of plastic vacuum forming machines, and particularly relates to a separated type automatic plastic vacuum forming machine which comprises plastic vacuum forming equipment, the plastic vacuum forming equipment comprises a workbench, an air cylinder is fixedly connected to the bottom of the workbench, a feeding frame is fixedly connected to the top of the workbench, and a heating plate is fixedly connected to the side wall of the feeding frame. When the mold reaches a preset position, the bottom of the sponge is in contact with the top of the plate, the built-in air suction pump is started and adsorbs the plate to the surface of the mold, the sponge continuously extrudes downwards, excessive flowing of materials is limited through elastic counter-acting force, and the stretching degree of each area is balanced; and secondly, a layer of air film can be formed between the sponge and the plate through air injection operation, friction force is reduced through the air lubrication effect, the sponge and the plate are smoothly separated, the surface of the plate can be further protected, physical damage can be further reduced, and therefore the product quality can be improved.

The invention relates to an electric machine (1) for a motor vehicle, comprising a housing (2), a stator (4) arranged at least partially in the housing (2) and non-rotatably connected to the housing (2), and a rotor (5) arranged at least partially in the housing (2), which can be driven by means of the stator (4) and is thereby rotatable about an axis of rotation (6) relative to the stator (4) and relative to the housing (2), comprising at least one gas-lubricated mechanical seal (21) arranged between a component (19) of the rotor (5) and a housing part (20) of the housing (20) for sealing the component (19) against the housing part (20).

The multifunctional electric spindle running-in table comprises a protective cover, a workbench, a center water outlet assembly, a cooling mechanism, a pneumatic mechanism and an electric control mechanism, the protective cover comprises a frame body and an outer cover, the frame body is arranged in a closed space defined by the outer cover, a protective door is installed on the front face of the outer cover, and the frame body comprises an upper layer frame and a lower layer frame. The workbench is installed on the upper-layer frame in a front-back sliding mode, a vertical support and a horizontal support are arranged on the workbench, the center water outlet assembly is arranged on the lower-layer frame, and the cooling mechanism, the pneumatic mechanism and the electric control mechanism are arranged on the outer side of the protective cover. The running-in platform has multiple functions of dust prevention, cooling, oil-gas lubrication, center water outlet testing and the like, is suitable for vertical and horizontal running-in electric spindles, meets the running-in requirements of various electric spindles such as oil-gas lubrication electric spindles, grease lubrication electric spindles and center water outlet electric spindles, can realize one-stop running-in of the electric spindles in a closed space without being externally connected with other parts, and is high in running-in efficiency. And the universality and the convenience are good.

The application discloses an oil-gas lubrication cooling device and method for a gear transmission device, which comprises the following steps: using an oil-gas lubrication system to respectively provide an oil-gas mixture to a gear oil-gas nozzle and a bearing oil-gas nozzle, the gear oil-gas nozzle sprays the oil-gas mixture provided by the oil-gas lubrication system on a gear tooth surface, and the bearing oil-gas nozzle sprays the oil-gas mixture provided by the oil-gas lubrication system on each rolling bearing; using a compressed air system to respectively provide cooling air to an end face cooling nozzle and a top cooling nozzle, a fan cooling system sucks mixed hot air containing oil and gas in a transmission gear box through an air inlet to cool the gear, and the inside of the gear transmission box is in a negative pressure environment state; and the mixed hot air containing oil and gas is subjected to oil-gas separation and recovery through an oil-gas separator. The oil-gas lubrication cooling device and method greatly reduce the lubricating oil supply required by the gear transmission device, eliminate the problems of power loss caused by stirring oil, power loss caused by pumping and extruding, large heat generation and low operation efficiency.

The present invention discloses a valve body assembly of an engine supercharger bypass valve, a bypass valve assembly and an engine. The valve body assembly includes a valve body and a valve stem, and one end of the valve stem is connected to the valve body; the valve body assembly further includes a riveting pin for connecting the valve body and the valve stem. The outer wall surface of the riveting pin is in clearance fit with the inner wall surface of the connection hole of the valve body; a plurality of cavities are circumferentially and spacedly arranged along the inner wall surface of the connection hole of the valve body, and vent holes are arranged at one end of the riveting pin close to the valve body, and the vent holes are respectively communicated with each cavity. Through the setting of this structure, the gas with a certain pressure flowing into the vent holes of the riveting pin can be stored in the cavities and convectively diffused into the gap between the valve body and the riveting pin, so that the gap between the two is often in a "gas" lubrication state, so as to avoid noise and wear caused by jamming and collision, and can further improve the working performance of the engine intake system in this application.

A roll support assembly (1) comprises a bearing block (2) and a bearing unit (4) arranged in the bearing block (2) to provide rotatable support for a journal (3) of a roll (30). The bearing block (2) is designed to have a closed in-block space (20) into which pressurized oil gas is injected to carry out oil-gas lubrication on the journal (3) and the bearing unit (4). And the in-seat space (20) is sealed and isolated from the outside through an end seal (50) arranged on the surface roller body (31) side of the in-seat space (20). And the in-seat space (20) is provided with at least one oil gas barrier (6) in an oil gas overflow channel (L) leading to the end seal (50). By allowing part of oil gas to pass through the barrier (6), the barrier (6) can reduce the oil gas pressure of the overflow channel (L) in the downstream area of the barrier (6). The invention also provides a bearing unit (4) and a filling member (7) used in the roll support assembly (1), and a rolling mill comprising the roll support assembly (1).

The invention provides a movable oil-gas lubrication station which comprises an oil storage tank fixedly mounted on the inner side of a shell, and rolling wheels are arranged at the bottom end of the shell; the liquid inlet end of the pneumatic pump is communicated with the bottom end of the inner side of the oil storage tank, the liquid outlet end of the pneumatic pump is communicated with the liquid inlet end of the stacked progressive increase distributor, and a plurality of liquid outlet ends of the distributor are respectively communicated with one liquid inlet end of the oil-gas mixing block; the gas inlet pipeline communicates with the gas inlet end of the pneumatic pump and the gas inlet end of the oil-gas mixing block; the liquid outlet end of the distributor is communicated with the liquid inlet end of the oil-gas mixing block through a connecting pipe, and the connecting pipe is communicated with the one-way valve. The device has the beneficial effects that after the roller is assembled, the station is used for supplementing oil to fully guarantee the lubricating effect, meanwhile, whether air leakage exists in other places except the exhaust hole or not is checked, the installation effect of a sealing ring is determined, the service life of a bearing is prolonged, and problems existing in the sealing installation process of a bearing seat are found in time.

The invention discloses a floating ring seal with a static pressure throttling function. The floating ring seal comprises a floating ring, an elastic assembly and a shell with a left gland and a right gland. The floating ring is located in the shell and has a gap therebetween, and the inner diameter of the floating ring is in clearance fit with the rotor; the left end of the floating ring is conical, and a wedge-shaped gap is formed between the conical part and the shell; the right gland enables the left end face of the floating ring to be attached to the left gland through an elastic assembly. A plurality of small throttling holes are formed in the outer shell in the circumferential direction, a plurality of oil cavities are formed in the inner wall of the outer shell, and the small throttling holes, the oil cavities and the gaps are communicated. According to the invention, the floating ring can effectively improve the abrasion condition of the floating ring caused by insufficient rotating speed by virtue of a fluid static pressure effect at the initial rotating stage, better lubrication and floating ring self-adjusting functions are realized, and the whole floating ring is always in a lubricating substance no matter whether oil lubrication or gas lubrication is selected, so that the friction coefficient is reduced, and the working efficiency of a machine is improved; and the integral floating ring is adopted in structure, so that the processing time is shortened, and the installation cost is reduced.

A target ball adsorber, comprising a base; a fixed seat; a adapter seat body; a rotating device; an adsorption device; a cylinder device; a sensor device; a negative pressure air path is provided inside the base, the fixed seat and the adapter seat body, and is connected to the adsorption needle of the adsorption device to achieve the adsorption of the target ball; the cylinder device restricts all six degrees of freedom of the rotating device to adsorb the target ball, or the rotating device is set to have only one degree of rotational freedom, that is, the other five degrees of freedom are restricted to assemble and detect the acting force on the target ball; the sensor device and the adsorption device together with the rotating device form a lever mechanism to detect the force condition of the target ball. The target ball adsorber provided by this application performs non-destructive vacuum adsorption and assembly on the target ball through the adsorption needle; an undamped rotating structure is provided inside to perform gas lubrication on the air path; the force sensor and the lever mechanism are combined to detect the force condition of the target ball at the end of the adsorption needle, improving the efficiency of adsorbing, moving and assembling the target ball.

A preparation method of a high-strength and high-toughness 6XXX aluminum alloy profile for automobile structural parts comprises the steps of ingredient smelting, casting, homogenization and heating treatment, extrusion forming, online quenching, stretch straightening, aging strengthening and the like, and the high-strength and high-toughness 6XXX aluminum alloy profile for the automobile structural parts is obtained by optimizing the alloy element proportion and adopting the oil-gas lubrication semi-continuous water-cooling casting, gradient heating, air-blast quenching and precise aging processes. The yield strength of the manufactured profile is larger than or equal to 200 MPa, the tensile strength is larger than or equal to 230 MPa, the ductility is larger than or equal to 10%, and no visible crack exists after a 65% total cross section compression test is conducted according to the GB / T 33910-2017 standard. The problems that the strength and toughness of a traditional 6XXX aluminum alloy cannot be achieved at the same time, and the performance and the size precision are opposite are solved, the technology is simple and convenient, the manufacturing cost is low, and the requirements of core structural parts such as automobile bumpers, energy absorption boxes and engine room longitudinal beams are met.

The present invention provides a sealing and lubricating structure for a spindle and an electric spindle using the structure, and relates to the technical field of electric spindles. Among them, a sealing and lubricating structure for a spindle includes: a front-end oil-gas lubrication circuit, connected to the oil-gas inlet and the oil-gas outlet; a rear-end oil-gas lubrication circuit, connected to the oil-gas inlet and the oil-gas outlet; a front-end airtight circuit, connected to the gas path inlet; a rear-end airtight circuit, connected to the gas path inlet; a front-end airtight component, arranged at the end of the front-end airtight circuit; a rear-end airtight component, arranged at the end of the rear-end airtight circuit. And an electric spindle, which adopts the above-mentioned air sealing and oil-gas lubrication combined structure. Based on the technical solution of the present invention, the impurity removal rate, oil-gas lubrication efficiency and oil-gas utilization rate are guaranteed, and the service life of the bearings is extended.

The utility model provides a novel intelligent oil-gas lubrication satellite station which comprises a gas circuit assembly, a mixing assembly, a gas pump assembly, a gas pump assembly, an oil-gas lubrication assembly, an oil-gas lubrication assembly and an oil-gas lubrication assembly, wherein the gas inlet end of the gas circuit assembly is communicated with an external gas pump; the oil inlet end of the oil way assembly is communicated with an external oil pump, and the oil outlet end of the oil way assembly is communicated with the mixing assembly; a plurality of connecting branches are arranged in the mixing assembly, each connecting branch is communicated with one bearing seat, and all the connecting branches are communicated with the gas path assembly and the oil path assembly. The lubricating oil distribution device has the advantages that the output oil quantity of each branch can be independently and accurately distributed, the lubricating oil distribution device is used for bearing seats with different lubricating oil quantities, accurate distribution of lubricating agents is achieved, the on-site use requirement is better met, and meanwhile energy conservation and efficiency improvement are achieved.

The utility model relates to the technical field of electric spindle oil-gas lubrication, in particular to an electric spindle oil supply integrated structure. Comprising a mounting plate, an electric thin oil lubrication pump is fixed to the upper end of the mounting plate, the outlet end of the electric thin oil lubrication pump is communicated with the inlet end of an oil filter through an oil pipe, the outlet end of the oil filter is communicated with the oil inlet end of an oil-gas distribution block through a communicating pipe, and the outlet end of the oil-gas distribution block is communicated with a lubrication channel of an electric spindle. An air filter is fixed on the mounting plate, the inlet end of the air filter is communicated with an air source, the outlet end of the air filter is communicated with the first end of a tee joint, the second end of the tee joint is communicated with an air seal interface of the electric spindle, and the third end of the tee joint is communicated with an air inlet of the oil-gas distribution block. According to the technical scheme, through integrated, intelligent and modular design, the problems that a traditional electric spindle lubricating system is complex in installation, lagged in fault response, high in maintenance cost and the like are solved.

The utility model provides a back-up roll structure which comprises a shaft, a roll body, two VA type sealing rings, two first check rings, two deep groove ball bearings, two second check rings, two needle bearings, a spacer ring and two spacer bushes, the two ends of the spacer ring make contact with the two needle bearings, and the needle bearings and the shaft are arranged in the roll body in an interference fit mode. One end of the second check ring is in contact with a retainer of the needle bearing, the other end of the second check ring is in contact with an outer ring of the deep groove ball bearing, one end of the first check ring is in contact with the outer ring of the deep groove ball bearing, the other end of the first check ring is in contact with the VA type sealing ring, and the deep groove ball bearing is in interference fit with the shaft. A fixed gap is reserved between the first check ring, the second check ring, the spacer ring and the shaft, the low end face of the spacer bush abuts against an inner ring of the deep groove ball bearing, and the high end face of the spacer bush pushes the VA type sealing ring to abut against the first check ring. The supporting roller not only can meet the requirement for oil-gas lubrication in the supporting roller, but also has high bearing capacity.

The invention relates to a piezoelectric feedback type pore composite structure sliding block for a transmission shaft, the sliding block comprises a pore surface layer, a piezoelectric coating and a core part, and an external oil-gas lubricating pipeline provides compressed air and lubricating oil for an oil duct in the core part; the pore surface layer is of a three-dimensional micropore communicating structure, and a three-dimensional micropore channel is communicated with an oil channel in the core part; and the piezoelectric coating is arranged between the pore surface layer and the core part, converts the real-time load borne by the sliding block when the transmission shaft operates into an electric signal, and transmits the electric signal to an external collector. By arranging the pore structure on the pore surface layer, the problem of non-uniform lubrication distribution caused by large-area oil distribution of oil-gas lubrication through an oil groove is solved, and the lubrication performance of the sliding block is improved; and by integrating the load feedback piezoelectric coating, the real-time monitoring function of the slide block load is realized, and the problem that the slide block load cannot be automatically controlled is solved. By arranging the pore structure on the pore surface layer and integrating the load feedback piezoelectric coating, the problem of frequent burning loss of the sliding block in the industry is solved.

The utility model relates to oil gas lubrication technical field, and disclose bearing oil gas lubrication system, including the pump body, the upper portion fixed mounting of pump body has the upper end cover, the upper portion fixed mounting of upper end cover has the installation component, the left side fixed mounting of installation component has the installation mouth, the inside fixed mounting of butt joint mouth has the filter screen, the bottom fixed mounting of pump body has the oil outlet, the utility model discloses through the upper portion fixed mounting of multiple installation components of upper end cover, and the inside of multiple installation components installs through butt joint mouth simultaneously, the inside fixed mounting of butt joint mouth has the filter screen, the lubricating oil flow of many installation components injection is same at this time, reaches the effect that makes the average of pump body inside pressure variation, when the uneven flow of individual installation component appears simultaneously, can make the flow of other installation components adjust acceleration through flow control knob, thereby reach the effect that always keep the stability of pump body inside.

This invention relates to the field of gas-lubricated bearings, and more particularly to a wear-resistant and high-load-bearing hydrodynamic thrust bearing and its control method. By coordinating the operation of a displacement sensor, a controller, and a precision lifting platform, the wedge height of the top foil can be effectively adjusted, thereby controlling the minimum gas film thickness to be greater than a set value. This prevents the gas film gap from being too small, causing contact friction between the rotor and the top foil. Simultaneously, this invention can also actively control the ratio of the wedge height of the top foil to the minimum gas film thickness within a certain range to actively maintain the bearing's load-bearing capacity at a high level. It is generally believed that the thrust bearing's load-bearing capacity is closely related to the ratio of the wedge height to the minimum gas film thickness, with the ratio range set to 2-5. This invention can control the minimum gas film thickness to be greater than a set value to prevent contact friction between the rotor and the top foil, and can also actively control the ratio of the wedge height of the top foil to the minimum gas film thickness within a certain range to actively maintain the bearing's load-bearing capacity at a high level.

The application relates to a high-speed oil-gas lubricated hydrodynamic step thrust bearing static performance design method, which comprises the following steps: establishing an oil-gas mixture viscosity and density expression; based on the oil-gas mixture viscosity and density expression, establishing a step thrust bearing Reynolds equation and an energy equation in a polar coordinate; solving the Reynolds equation and the energy equation to calculate the static performance of the thrust bearing; carrying out static performance parameter calculation of the oil-gas lubricated hydrodynamic thrust bearing under different oil-gas mixture gas contents and working rotating speeds to obtain the influence law of oil-gas lubrication on the static performance of the thrust bearing; and taking the friction torque, the bearing capacity and the temperature rise of the hydrodynamic thrust bearing as design targets, determining the structure parameters of the bearing through sensitivity analysis of the structure parameters on the static performance. The high-speed oil-gas lubricated hydrodynamic step thrust bearing static performance design method can greatly improve the static design precision of the bearing and shorten the design cycle.

The present application relates to the technical field of wire cutting, and in particular to an oil-gas lubrication control method, system, medium, control device and wire cutting machine. The present application aims to solve the problems of low automation degree, difficult lubricant adhesion, high cost and low cleanliness of the bearing box lubrication mode. For this purpose, the oil-gas lubrication control method of the present application is used for an oil-gas lubrication system, and the control method comprises: when the oil-gas lubrication interval length of the part to be lubricated reaches the preset interval length, controlling the oil-gas lubrication system to inject oil-gas into the part to be lubricated; when the oil-gas lubrication duration reaches the first preset duration, controlling the oil-gas lubrication system to stop injecting oil-gas into the part to be lubricated. The present application can realize intermittent automatic supply of oil-gas to the part to be lubricated, improve the automation degree of lubrication, and improve the adhesion effect. The artificial cost is reduced, and lubrication pollution is not easily caused.

The invention discloses a Stirling engine honing cylinder sleeve based on gas lubrication, the cylinder sleeve is made of a stainless steel material, and after ion nitriding treatment, the inner surface of the cylinder sleeve is provided with uniformly distributed cross honing reticulate pattern textures; the cross angle of the cross honing reticulate pattern texture ranges from 30 degrees to 150 degrees, the groove depth ranges from 0.1 micrometer to 0.5 micrometer, the width-to-distance ratio ranges from 0.2 to 0.5, the line width ranges from 20 micrometers to 100 micrometers, and the line distance ranges from 200 micrometers to 800 micrometers. According to the invention, by optimizing the geometrical parameters, the processing technology and the surface state of the honed reticulate pattern on the surface of the cylinder sleeve, enhancing the gas dynamic pressure bearing capacity, improving the piston ring-cylinder sleeve mixed lubrication condition, reducing the frictional wear under the oil-free lubrication working condition, solving the problem of quick wear failure of the piston ring, reducing the wear rate of the piston ring, and prolonging the service life of a sealing element; and therefore, the reliability, the operation stability and the power density of the Stirling engine are improved.