820 results about "Ultra high pressure" patented technology

The invention provides a low-speed and ultrahigh-pressure die-casting process method for automobile part die-casting, and relates to the field of automobile part manufacturing. The method includes the following steps that firstly, a mold is prepared, secondly, molten metal is prepared, thirdly, a casting is cooled and demolded, and fifthly, follow-up treatment is conducted. The defects that in the high-speed mold filling process of a common high-pressure casting technology, gas is likely to be involved in the molten metal, and consequently air holes, shrinkage porosity and the like are generated in the casting are overcome; and when key parts such as automobile engine cylinder bodies and hubs are produced, air hole defects possibly cause the problems of air leakage of engines, insufficient hub strength and the like. And meanwhile, for parts with thin walls and complex structures, uniform filling of molten metal in a mold is difficult to ensure by a traditional die-casting process, the defects of cold shut, insufficient pouring and the like are easy to occur, and the qualified rate and the production efficiency of products are reduced.

The invention relates to the technical field of valve leakage detection, and particularly discloses an ultrahigh pressure gas valve leakage detection method and system. According to the method, a unified leakage feature vector is obtained through multi-source acquisition and processing; capturing a time sequence dependency relationship, and determining a micro leakage mode; carrying out abnormal peak detection to obtain a preliminary leakage probability; combining the initial leakage probability with real-time environmental parameters, and dynamically adjusting a judgment standard; comparing the unified leakage feature vectors through a judgment standard, fusing position coordinate triangulation positioning, judging whether micro crack leakage occurs or not, and obtaining leakage position estimation; the historical data sequence is fused, the micro crack development trend is predicted, and the early warning level is determined; and generating a corresponding response signal according to the early warning level, and outputting micro crack leakage early warning. Multi-source data fusion, dynamic threshold adjustment and position prediction can be carried out, the accuracy and robustness of micro crack leakage detection are remarkably improved, and efficient guarantee is provided for safe operation of a pipeline.

Low-pressure oil enters an inlet of a proportional overflow valve, the pressure of a low-pressure system is controlled by the proportional overflow valve, pressure oil on the low-pressure side acts on a plunger control cavity of the hydraulic control overflow valve through a pressure stabilizing damper and a one-way valve, and hydraulic pushing force generated by a plunger is transmitted to an overflow valve steel ball through a disc spring; when the force obtained by multiplying the ultrahigh pressure of the inlet of the hydraulic control overflow valve by the action area of the steel ball is equal to the pushing force of the plunger, the steel ball of the overflow valve is opened to start overflowing, and the overflow pressure of the ultrahigh pressure system can be controlled by adjusting the pressure of the proportional overflow valve of the low-pressure system. The external control type ultrahigh-pressure proportional pressure regulating valve can be used for pressure regulation of a hydraulic system with the pressure being 200 MPa or above and can be used as a proportional overflow valve of an ultrahigh-pressure hydraulic system. By arranging a hydraulic loop of two auxiliary oil ports of the external control type ultrahigh pressure proportional pressure regulating valve, the pressure rising one-way proportional regulating function, the pressure unloading function and the pressure rising / falling two-way proportional regulating function of an ultrahigh pressure system can be achieved.

The utility model relates to a spatial multilayer ultrahigh pressure belt type dehydration system which comprises a main rack, a material distributing and feeding device, a material distributing device, a filter belt, a filter belt traction machine, a filter pressing hydraulic machine, a hydraulic station and a controller, the material distributing and feeding device, the material distributing device, the filter belt traction machine and the filter pressing hydraulic machine are connected and mounted on the main rack; and the output end of the material distributing and feeding device is connected and mounted above the material distributing device. The dehydration method comprises the steps of equipment starting, material distribution, filter pressing dehydration and unloading. The organic waste dehydration device is higher in dehydration efficiency and lower in cost, and can be used as an organic waste dehydration device capable of reducing pollution and carbon.

The invention provides an ultrahigh-pressure vertical plunger pump. The ultrahigh-pressure vertical plunger pump comprises a plunger pump base, a plunger pump body and a plunger pump cover. A transmission structure is arranged on the inner side of the plunger pump base, a receding hole communicated with an inner cavity of the plunger pump base is formed in the upper end of the plunger pump base, and the output end of the transmission structure extends into the receding hole. A water inlet hole is formed in the side wall of the plunger pump body, a high-pressure cylinder is arranged on the inner side of the plunger pump body, a water passing hole is formed in the side wall of the upper end of the high-pressure cylinder, a sealing bush is arranged in the high-pressure cylinder, a plunger shaft is slidably arranged on the inner side of the sealing bush, and the lower end of the plunger shaft is connected with the power output end of the transmission structure. An annular lubricating gap is formed between the sealing bush and the plunger shaft; a drainage channel is arranged on the inner side of the plunger pump cover, and a one-way valve structure is arranged at the joint of a water inlet of the drainage channel and an inner cavity in the upper end of the high-pressure cylinder. Compared with a sealing ring, the sealing bush has higher strength and higher wear resistance, and is not easy to wear in the use process.

The invention discloses a multi-physics coupling viscosity calibration method for a large and heavy hydrostatic pressure rotating table, and belongs to the technical field of fluid mechanics modeling and high-end equipment manufacturing. According to the calibration method, a temperature control / high-pressure rotational rheometer is adopted to obtain experimental data, and experimental verification shows that the average prediction error of the model under the ultrahigh pressure (1000 MPa) and the wide temperature range (20-80 DEG C) is controlled within 10%, and the model is remarkably superior to traditional Arrhenius and Barus models (the error is 40% or above). Theoretical support is provided for oil film dynamic characteristics, bearing capacity optimization and real-time control of a large and heavy hydrostatic pressure system, and the method is suitable for various lubricating media such as mineral oil, synthetic oil and nanofluid and can be widely applied to precision machining and intelligent control in the field of high-end equipment manufacturing.

The invention provides multi-mode non-explosive excavation integrated equipment based on ultrahigh pressure hydraulic cutting, which comprises a mobile platform, the mobile platform comprises a lower layer frame body and an upper layer frame body, the lower part of the lower layer frame body is hollowed out and is provided with a movable tunneling crawler loader, the two ends of the lower layer frame body are provided with water jet cutter mechanical arms, and the upper layer frame body is provided with a wet spraying mechanical arm; arch anchor mechanical arms and auxiliary frame arch arms are arranged at the upper end and on the two sides of the movable platform, an arch frame sliding way is further arranged on the outer side of the movable platform, and the problem of efficient excavation of surrounding rock tunnels of various grades is solved.

The invention provides a fiber material reinforced ultrahigh-pressure direct-acting electromagnetic valve, which belongs to the technical field of electromagnetic valve design and comprises a valve body, a sealing pipe assembly, a winding body, a movable iron core assembly, a valve port sealing element, an electromagnetic coil and a magnetic conductive shell. Due to the adoption of the innovative structural design reinforced by the fiber material, the long-standing contradiction between the loading capacity and the magnetic circuit efficiency in the field of ultrahigh-pressure electromagnetic valves is skillfully solved, the overall mechanical property of the electromagnetic valve is optimized by the structure, and the magnetic circuit efficiency is guaranteed; meanwhile, the mechanical property of the movable part can be effectively enhanced due to the high-strength characteristic of the fiber material, so that the performance of the movable part is improved, the dynamic response hysteresis bottleneck is effectively overcome, and the response speed is increased; at the sealing part, the overall strength and stability of the sealing part can be enhanced through reinforcement of the fiber material, meanwhile, the sealing part can be prevented from losing efficacy due to medium corrosion through good corrosion resistance of the fiber material, the hidden danger of sealing instability in the high-pressure environment is thoroughly eliminated, and sealing reliability is guaranteed.

The invention relates to a method for preparing rubber powder by adopting a high-pressure water jet composite method. The method comprises the following preparation steps: S1, crushing rubber particles; s2, performing impact type filtration; s3, internal circulation of the rubber powder liquid; and S4, solid-phase separation and recovery. The cavitation effect and the high-speed impact effect in ultrahigh-pressure water jet can enable a rubber material to achieve the low-temperature crushing effect at the normal temperature, so that the purpose of preparing fine rubber powder can be achieved at the normal temperature in a low-energy-consumption, low-cost and environment-friendly manner; meanwhile, the actual filtering area of the filter cartridge is increased to the maximum extent, and the filtering effect and efficiency are improved to a great extent.

The invention provides a non-explosion excavation construction method based on ultrahigh pressure water jet cutting, which comprises a mobile platform, the mobile platform is provided with a water jet mechanical arm, a wet spraying mechanical arm, an arch anchor mechanical arm and an auxiliary frame arch arm, and the lower part of a lower layer frame body of the mobile platform is hollowed out and is provided with a movable tunneling slag-raking machine; the tunneling crawler loader is provided with a splitting drill mechanical arm or a breaking hammer mechanical arm; planning the arrangement position of a slag discharge hole, the movement track of a jet flow module, jet flow parameters and the arrangement of a splitting hole; the arch anchor mechanical arm moves forwards, and drilling operation of a slag discharging hole is conducted; the water jet cutter mechanical arm moves forwards and cuts the contour line with the slag discharging hole as the starting point; the tunneling slagging-off machine synchronously carries out excavation operation in the passing space, and gravels and muck are conveyed to the rear portion to be discharged; after the single-cycle operation is finished, the movable platform and the tunneling crawler loader move forwards, the wet spraying mechanical arm and the auxiliary frame arch arm carry out arch erecting, net hanging and primary spraying operation, and the non-blasting excavation problem under the sensitive geological conditions of superhard rock, high ground stress and the like is solved.

According to the novel ultrahigh pressure proportional valve and the hydraulic control system, a piston cavity is formed in a valve body, a low-pressure piston block is arranged in the piston cavity, and a high-pressure cavity is formed in one side of the low-pressure piston block; the cavity body section of the high-pressure cavity is smaller than that of the piston cavity; a high-pressure piston block is arranged in the high-pressure cavity and is linked with the low-pressure piston block; the high-pressure cavity is connected with the high-pressure oil port, the piston cavity is connected with the low-pressure oil port, and one or more pressure relief oil ports are formed in the high-pressure cavity or the piston cavity. When the structure is used in a hydraulic control system, oil in the high-pressure cavity can be restrained to be discharged slowly through the low-pressure piston block, and the high-pressure cylinder can be controlled to stabilize pressure in a certain high-pressure state through proportional oil discharge. According to the hydraulic system, the defects in the prior art are overcome, stable control over the high-pressure oil cylinder can be achieved, during high-pressure unloading, the high pressure cannot be directly reduced to the lowest state, and linear unloading and pressure stabilization can be achieved.

The utility model discloses an organic waste composite dehydration system which comprises a physical dehydration device, a material crushing device and a biological dehydration device, and the material crushing device is connected and installed at the rear end of the physical dehydration device and the front end of the biological dehydration device. And the physical dehydration device comprises an ultrahigh-pressure laminated box type dehydration device or an ultrahigh-pressure laminated belt type dehydration device. The device can meet the requirements of environment-friendly treatment and resource utilization of organic wastes in real production, realizes integration of mechanical and physical dehydration and biological fermentation dehydration, and can be used for recycling the organic wastes without depending on other organic auxiliary materials or greatly reducing the dependence on the other organic auxiliary materials. According to the method, the organic waste with the moisture content of about 80% or even higher can be efficiently, directly and deeply dehydrated to the moisture content of 40% or lower at low cost, the index requirement of resource utilization is met, the treatment cost of the social organic waste is reduced, and the improvement of the social organic waste environment-friendly treatment and resource utilization level is facilitated.

The invention relates to the technical field of in-situ environment reconstruction, and particularly provides a deep in-situ high-temperature and ultrahigh-pressure environment reconstruction system which comprises a shifting cabin, the shifting cabin comprises a pressure cavity and a temperature control cavity, the pressure cavity is coated with the temperature control cavity, and the temperature control cavity is communicated with the shifting cabin; a pressure sensor and a temperature sensor are arranged in the pressure cavity, the pressure cavity is filled with a liquid medium, and a heating structure is arranged in the temperature control cavity; the push rod is provided with a pressure piston in the pressure cavity; the control part is electrically connected with the heating structure, the push rod, the pressure sensor and the temperature sensor; according to the invention, the deep in-situ high-temperature and ultrahigh-pressure environment can be reconstructed, and an environmental basis is provided for researching the in-situ problem of deep rock mechanics.

The utility model relates to a cage basket conveying system which comprises a feeding roller seat connected with the feeding end of ultrahigh-pressure sterilization equipment and a discharging roller seat connected with the discharging end of the ultrahigh-pressure sterilization equipment, and a feeding cage pushing mechanism is installed above the feeding roller seat in a matched mode. The feeding cage pushing mechanism pushes a cage basket on the feeding roller seat into the ultrahigh-pressure sterilization equipment, the discharging cage pushing mechanism is installed above the discharging roller seat in a matched mode, and the discharging cage pushing mechanism clamps and drives the cage basket at the discharging end of the ultrahigh-pressure sterilization equipment to move along the discharging roller seat, so that discharging is conducted. By arranging the roller seat, the feeding cage pushing mechanism and the discharging cage pushing mechanism, automatic feeding and discharging of the ultrahigh-pressure sterilization equipment can be realized, so that the conveying efficiency is effectively improved, the production takt is compact, the labor intensity of workers is reduced, and the production number of finished products is reduced.

The invention relates to a multi-disaster cooperative prevention and control method and system for fracturing of a heading face coal seam advanced hole exploration area under complex geological conditions, and belongs to the field of mine disaster prevention and control. According to the method, an integrated process of drilling, exploring, pressing and pumping is adopted, and geological exploration is completed through advanced hole exploring construction bedding drilling; on the basis of a segmented retreating type hydraulic fracturing technology, pressure relief and permeability increase of a coal body are achieved in combination with a recoverable packer device; and after fracturing, a gas extraction system is connected by adopting a process of two-plugging one-injection and hole sealing under pressure, and the stability of the roadway is enhanced through an anchor net cable beam supporting system. The matched fracturing system comprises a water tank, a water injection pump, an ultrahigh pressure hydraulic hose, a fracturing sealing pipe column and an integrated monitoring device. Through multi-disaster collaborative design, repeated drilling construction and resource waste are reduced; the anchor net cable beam supporting system enhances the stability of the roadway under the complex geological condition. The scheme has high adaptability and popularization value, and provides reliable technical support for safe mining of coal mines.

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 invention relates to the technical field of cone valve multi-mode air supply-energy dissipation cooperative cavitation reduction devices and control methods, and discloses a fluid control device named'cone valve multi-mode air supply-energy dissipation cooperative cavitation reduction devices and control methods'. The conical valve aims to solve the problems that an existing conical valve is serious in cavitation under the working condition of high pressure difference, air supply and energy dissipation functions are separated, and response lags. The device is characterized by comprising three stages of energy dissipation perforated pipes which are arranged at the outlet end of a valve body in a gradient mode, negative pressure injection air supply pipes which are symmetrically arranged outside a flow guide cover and flow guide fins which are welded to the inner wall of a cone, and the three stages of energy dissipation perforated pipes, the negative pressure injection air supply pipes and the flow guide fins cooperate to achieve pressure gradient pressure relief, self-adaptive air supply and flow state stability; the control method dynamically adjusts the air supply intensity based on the opening degree, the pressure difference and the vibration signal. According to the technical scheme, cavitation inception and collapse impact are remarkably restrained, vibration noise is reduced, the service life of the valve is prolonged, an external air source is not needed, the system pressure drop is controllable, and the system is suitable for ultrahigh pressure difference and large-flow hydroelectric working conditions.

An apparatus for generating an ultra-high pressure fluid jet during drilling comprises a drilling motor; a housing structure connected with the drilling motor; and a drill bit assembly connected at the downstream end of the housing structure. The housing structure comprises an oscillation tool configured to transfer a pressure energy from pumped drilling fluid to a closed loop hydraulic circuit and pressurize the same therein; a pressure intensifier pump configured to increase hydraulic pressure of closed loop hydraulic fluid to an ultra-high pressure; and a pressure transfer tool configured to transfer the ultra-high pressure from the closed loop hydraulic fluid to the low-pressure drilling fluid, without any communication between the drilling fluid and closed loop hydraulic fluid and without requiring the drilling fluid to enter pressure intensifier pump. The ultra-high pressure of drilling fluid is directed to the drill bit assembly to aid drilling efficiency in drilling applications.

A hot-rolled automobile steel having good surface and fatigue performance. The hot-rolled automobile steel comprises the following components in percentages by weight: C: 0.03-0.065%, Mn: 1.2-1.8%, P≤0.013%, S≤0.003%, Al: 0.25-0.45%, Ti: 0.11-0.18%, Cr: 0.1-0.5%, Nb: 0.02-0.05%, and N: 0.001-0.005%. The production method therefor comprises: 1) performing a vacuum treatment after converter smelting; heating a casting blank; performing rough rolling and ultrahigh pressure descaling; performing finish rolling; performing ultra-high pressure water descaling after finish rolling; performing cooling; and performing coiling. The hot-rolled automobile steel not only has a yield strength of larger than or equal to 750 MPa, a tensile strength of 800-950 MPa, and an elongation of larger than or equal to 16%, and does not crack when the cold bending radius is half of the thickness and a cold bending angle is 180 degrees, but also has a surface roughness of smaller than or equal to 1.5, a microhardness HV0.025 at the position having a depth of 30 μm to the surface layer of larger than or equal to 230, and the symmetric fatigue limit of a steel plate in a state of having oxide scales is larger than or equal to 330 MPa.

The invention relates to the technical field of in-situ environment reconstruction, and particularly provides a displacement system under deep in-situ high-temperature and ultrahigh-pressure environment reconstruction, and the displacement system comprises a base which is provided with a first displacement mechanism which is used for driving a cabin on the base to move along the length direction of the base; the two-way displacement mechanisms are used for driving cabins on the two-way displacement mechanisms to move in the length direction perpendicular to and parallel to the base; the one-way displacement mechanisms are used for driving cabins on the one-way displacement mechanisms to move in the direction perpendicular to the length direction of the base; the hoops are fixedly connected to the base and used for being fixedly connected with the ends of all the cabins so as to control sealing and separation of all the cabins; accurate displacement and butt joint of all the cabins can be achieved, all the cabins are connected in a sealed mode through the hoops, and the accuracy and efficiency of environment reconstruction are achieved.

The utility model relates to a regulating valve for an ultrahigh-pressure polyethylene device, which comprises a filler assembly, a main sealing filler group, an inner auxiliary sealing filler group and an outer auxiliary sealing filler group, the main sealing packing set is provided with inverted-V-shaped supporting rings and PTFE sealing rings which are alternately arranged. A first cavity is formed between the supporting ring and the teflon sealing ring; the inner auxiliary sealing packing group is provided with a C-shaped ring with a downward opening; the outer auxiliary sealing filler set is provided with an upper filler, a plurality of middle fillers which are overlapped and are in an inverted V shape are arranged between the lower filler and the upper filler, and a second cavity is formed between the middle fillers. When the main sealing filler is extruded by a high-pressure medium, the inner wall face and the outer wall face of the teflon sealing ring are opened outwards, and the inclined faces are fully extruded to achieve ultrahigh-pressure environment sealing.

The ultrahigh-pressure pulse descaling system comprises a kettle body and a cleaning device, the kettle body is provided with a cleaning opening capable of being closed, the cleaning device comprises a water pump, a pipeline, a sprayer and a plugging device, the water pump is communicated with the sprayer through the pipeline, the pipeline penetrates through the cleaning opening so that the sprayer can stretch into the kettle body, and the plugging device is arranged in the kettle body. The sprayer is provided with a plurality of water outlet holes and is rotationally connected with the pipeline, the water pump conveys a descaling agent into the sprayer through the pipeline, the sprayer can rotate under the action of the descaling agent, and the plugging device is arranged on the pipeline and used for plugging the cleaning opening. Compared with the prior art, the ultrahigh-pressure pulse descaling system of the high-pressure reaction kettle provided by the invention has the advantages that the water pump is used for pushing the descaling agent to flow at a high speed so as to push the sprayer to rotate, and meanwhile, the descaling agent is sprayed from the sprayer, sprayed in all directions in the high-pressure reaction kettle and uniformly covers scale at all positions of the inner wall; and a blind area which is not sprayed by the descaling agent is eliminated, and the descaling operation effect is improved.

The invention relates to the technical field of oil exploitation throttle valves, and discloses an ultrahigh-pressure cage throttle valve with a sealing structure for oil exploitation, the ultrahigh-pressure cage throttle valve comprises a valve body and a valve cover, and the valve cover is mounted on the valve body through a stud bolt and a nut; the electric driver and the valve rod are connected with the electric driver, one end of the valve rod penetrates through the valve cover and extends into the valve body, and a tubular valve element is arranged at the end, extending into the valve body, of the valve rod; the cage sleeve is arranged in the valve body, a plurality of oil outlet holes are formed in the cage sleeve in the circumferential direction, and the oil outlet holes are used for communicating the oil inlet end and the oil outlet end on the valve body; the valve element is arranged on the cage sleeve in a sleeving mode, and the flow is adjusted by changing the throttling area between the valve element and the cage sleeve by moving the valve element in the axial direction of the cage sleeve. Through the first sealing piece and the second sealing piece, a medium is prevented from leaking in an oil exploitation environment, the sealing performance of the throttling valve is ensured, waste caused by damage of the valve rod is reduced, friction among parts is reduced, the service life of the whole throttling valve is prolonged, and the number of times of equipment maintenance and replacement is reduced.

The utility model provides an ultrahigh pressure water jet derusting sewage recovery processor, which relates to the field of ultrahigh pressure water jet derusting sewage treatment equipment, and comprises a recovery box, the recovery box comprises a box body, an inner cavity of the box body is sequentially provided with a reservoir, a primary treatment pool, a secondary treatment pool and a storage pool from left to right, a water inlet assembly is mounted at the upper end of an inner cavity of the reservoir; a drainage assembly is arranged at the lower end of the right side of the box body; according to the sewage discharging device, the sewage discharging assembly is arranged, so that the effect of discharging sludge generated in the filtering process is achieved, the sludge enters the inner cavity of the conveying pipe through the through hole, the output shaft of the sewage discharging pipe rotates to drive the main shaft to rotate, the main shaft drives the spiral blade to rotate, and the sludge can be conveyed outwards when the spiral blade rotates; and the sewage is discharged through the blow-off pipe, so that the condition of blockage caused by accumulated sludge can be prevented, and the recovery efficiency of the ultrahigh-pressure water jet rust removal sewage is effectively improved.

The invention discloses a coating-free ultrahigh-pressure compressed air storage tank. The coating-free ultrahigh-pressure compressed air storage tank comprises a vertical storage tank, the vertical storage tank is manufactured by adopting a welding pipe, and the welding pipe comprises the following chemical elements in percentage by mass: 0.015 to 0.15 percent of C, 0.1 to 0.5 percent of Si, 1.40 to 2.20 percent of Mn, 0.03 to 0.10 percent of Nb, 0.01 to 0.035 percent of Ti, 1 to 9 percent of Cr, 0.001 to 0.005 percent of Ca, 0.02 to 0.045 percent of Al, 0.20 to 0.50 percent of Cu + Ni and the balance of Fe and inevitable impurities. The surface of the welded pipe is provided with a stable rust layer. The invention further discloses a manufacturing method of the compressed air storage tank. The manufacturing method comprises the steps that the welded pipe is manufactured; performing surface rust layer stabilizing treatment on the welded pipe to obtain a stable rust layer; a vertical storage tank is manufactured based on the welded pipe.

The technology relates to the use of a high salinity produced water stream from a gas oil separation plant (GOSP), as a wash water stream for the desalter unit in a GOSP. The produced water stream is pretreated by a sequence of steps and subsequently desalinated by a ultra-high pressure reverse osmosis (UHP-RO) membrane. The UHP-RO produces a permeate stream and a reject stream. A portion of the permeate stream is reused as a wash water stream in the desalter unit of the GOSP.

The invention discloses an ultrahigh-pressure proportional adjusting system for a gear press-fitting process and a control method. The ultrahigh-pressure proportional adjusting system comprises a motor, an ultrahigh-pressure plunger pump, an oil tank, two safety valves, three electromagnetic stop valves, two pressure sensors, three throttling dampers, a proportional overflow valve and an electromagnetic pressure retaining valve. When oil returns only through the proportional overflow valve, the overflow pressure of the proportional overflow valve is controlled, and linear pressure loading and pressure relief of the tensioning tool at 0-70 MPa are achieved; when oil returns through the throttling dampers and the proportional overflow valve at the same time, the overflow pressure of the proportional overflow valve is controlled according to different numbers of the passing throttling dampers, and linear pressure loading and pressure relief of the tensioning tool at 70-120 MPa, 120-170 MPa and 170-200 MPa are achieved. According to the invention, segmented adjustment of the loading pressure of a 200MPa hydraulic system can be realized, and the pressure increasing and decreasing amplitude and the pressure increasing and decreasing slope of the tensioning pressure at 0-200MPa can be controlled.

The invention relates to a process for installing a large-interference-magnitude metal sealing ring of an ultrahigh-pressure container, which is used for installing the large-interference-magnitude metal sealing ring on the ultrahigh-pressure container and comprises the following steps of: heating part matching sections of a container barrel and an end cover in order to ensure that the large-interference-magnitude metal sealing ring is smoothly assembled in the ultrahigh-pressure container; an electric heating belt heating device is used for heating a container barrel and an end cover which are matched with the metal sealing ring, so that the temperature of the matched part of the container barrel and the end cover and the metal sealing ring is increased to a certain temperature, and the inner diameter phi D of the matched part is expanded by heating and is increased to the inner diameter phi D1; the metal sealing ring is cooled to a certain temperature through liquid nitrogen deep cooling equipment, the outer diameter phi d of the metal sealing ring is reduced to the outer diameter phi d1 due to cooling, the inner diameter phi D1 is 0.1 mm larger than the outer diameter phi d1 at the moment, it is guaranteed that the sealing ring is smoothly installed in an end cover and a cylinder body matched with the sealing ring, meanwhile, screws are tightened, and after all parts are consistent in heat conduction temperature, the sealing ring is fixed to the end cover and the cylinder body. And the interference magnitude of the metal sealing ring is recovered again, namely the installation of the interference magnitude metal sealing ring is completed, through the operation, interference assembly is changed into clearance assembly, and the metal sealing ring with the large interference magnitude can be smoothly installed in place.

The utility model discloses a high-pressure steam extraction assembly and an ultra-supercritical adjustable steam extraction turbine, and relates to the technical field of turbines. The problems that heat is wasted and coal consumption is increased due to the fact that an existing ultrahigh-pressure heat supply steam extraction mode adopts a steam temperature and pressure reduction mode are solved. The steam supplementing device comprises a high-pressure cylinder, a steam supplementing pipeline and a three-way connector, the steam supplementing pipeline is arranged between the high-pressure cylinder and a steam supplementing valve, one end of the steam supplementing pipeline is communicated with the steam supplementing valve, and the other end of the steam supplementing pipeline is communicated with the high-pressure cylinder through the three-way connector. The three-way connector is arranged behind the high-pressure cylinder through flow of the fifth level, the pressure and temperature of steam after the high-pressure cylinder through flow of the fifth level are closest to the standard of an industrial park, and the three-way connector can mix high-temperature steam in the steam supplementing valve and steam after acting in the cylinder and extract the mixed steam, so that the temperature and pressure of the steam are adjusted; and moreover, temperature and pressure reduction is not needed, so that the waste of heat is avoided, and the coal consumption is further reduced.

The invention discloses a sealing structure suitable for an ultrahigh pressure container. A sealing area A is arranged at a pressure loading end between the inner wall of a cylinder and a sealing head, and a sealing area B is arranged in the direction far away from the pressure loading direction; in the sealing area A, the pressure loading end of the sealing head is provided with a circle of concave table, the end, away from the pressure loading direction, of the concave table is an inclined face a, an included angle a is formed between the inclined face a and the inner wall of the barrel, the pressure loading end of the sealing head is detachably connected with a gland, and a first sealing assembly or a second sealing assembly is installed in the concave table in a replaceable mode. The first sealing assembly comprises a metal triangular pad and a rubber sealing ring a. The second sealing assembly comprises a check ring and an elastic energy storage ring. In the sealing area B, a section of outer inclined plane is arranged on the outer side of the sealing head, a section of inner inclined plane is arranged on the inner wall of the cylinder, an included angle b is formed between the outer inclined plane and the inner inclined plane, and the threaded pressing ring, the pressing ring, the metal elastic ring and the rubber sealing ring b are sequentially arranged close to one another in the pressure loading direction. The structure can ensure the sealing reliability under various working conditions and is convenient to disassemble and assemble.