835 results about "Axial pressure" patented technology

The invention relates to the technical field of data acquisition and data analysis, in particular to a hydraulic fracturing test crack propagation monitoring system which comprises a monitoring system and is used for monitoring crack propagation behaviors in the hydraulic fracturing process in real time. Constant or dynamically changing confining pressure and axial pressure are provided; the pore pressure dynamic regulation and control unit is used for accurately controlling the injection pressure, flow and saturation of fracturing fluid and simulating fracture propagation behaviors under different seepage conditions; the multi-physics field sensing monitoring network unit is used for collecting strain, sound wave signals and a surface displacement field in the crack expansion process in real time; full-scale monitoring of rock fracture propagation is realized, an influence mechanism of pore pressure and time effect on fracture evolution is disclosed, an accurate prediction means is provided for shale gas development and deep engineering, and the fracturing effect and engineering safety are remarkably improved.

The invention discloses a rock multi-field coupling test system and a damage evaluation and prediction method thereof, belongs to the technical field of geotechnical engineering and geomechanics experiments, and solves the problem that the rock state under the multi-field coupling condition cannot be monitored in real time in the prior art. The system comprises a multi-physics field coupling loading system, a multi-field data monitoring system and a multi-field data acquisition system. The system can simulate and apply axial pressure, confining pressure, pore pressure and temperature of an in-situ environment to a rock sample, integrates an acoustic monitoring system, a deformation monitoring system and a CT scanning system to realize multi-dimensional real-time monitoring of rock sample damage, overcomes the limitation of a single monitoring method, realizes multi-system electrical connection by taking an upper computer as a data acquisition center, and realizes multi-dimensional monitoring of rock sample damage. And a multi-parameter model is constructed by fusing sound waves, deformation and CT data, so that the whole-process quantitative evaluation from microcrack initiation to macroscopic fracture is realized, and the damage evaluation is comprehensively performed.

The invention relates to the technical field of spinning machines, in particular to a spinning machine precision control method suitable for a high-temperature working condition, and the method comprises the following steps: collecting multi-source information; establishing a mapping relation between the thermal error and the temperature field to obtain a thermal error prediction model, training and correcting the thermal error prediction model, and outputting a real-time thermal error prediction value; generating a comprehensive position compensation instruction and performing position compensation; the pressure feedback value collected in real time is compared with a corresponding preset threshold value, if the pressure feedback value collected in real time is larger than or equal to the corresponding preset threshold value, the comprehensive position compensation instruction is converted into a force control instruction, and if the actual axial pressure feedback value or the actual radial pressure feedback value is smaller than the corresponding preset threshold value in the force control process, the comprehensive position compensation instruction is converted into the force control instruction. If yes, returning to the position compensation mode. According to the method provided by the invention, comprehensive compensation and active inhibition of thermally induced errors can be realized, and the forming precision of high-temperature spinning and the surface smoothness of a workpiece are remarkably improved.

The invention relates to a differential performance detection device, which belongs to the technical field of differential detection, and comprises a detection terminal connected with the axial end face of a planetary gear; the detector is arranged opposite to the detection terminal; a displacement sensor is arranged on the surface, facing the detection terminal, of the detector; the detector is provided with the surface of the displacement sensor to abut against the detection terminal, and the axial pressure of abutting between the detector and the detection terminal is zero. The driving part is used for driving the bevel gear to rotate; the processor is connected with the displacement sensor; the moment when the driving part drives the bevel gear to rotate is the first moment, the bevel gear transmits power to the planetary gear through rotating meshing after rotating, the displacement sensor is used for detecting whether the planetary gear rotates or not, the moment when the displacement sensor feeds back signals is the second moment, and the meshing clearance is detected according to the first moment and the second moment. Whether the tooth pitch of the differential mechanism is out of tolerance or not can be judged, and the accurate positioning effect of differential mechanism fault detection is achieved.

The invention relates to the technical field of friction stir welding, in particular to a friction stir welding temperature control method, system and equipment and a medium. The temperature control range value is calculated according to the material melting point; temperature distribution data of the advancing side, the retreating side, the stirring area core and the shaft shoulder action area are collected and divided; comparing the real-time temperature characteristic with the control range value to judge that the temperature is abnormal; calculating a stirring head rotation speed adjustment amount, an axial pressure change amount, and a welding travel speed correction value based on the abnormality determination result; when parameter adjustment is executed, torque and temperature field changes are monitored, and temperature control execution data are obtained; and finally, accurate regulation and control of the temperature field are realized through the control system. Accurate identification of temperature abnormity and accurate control of a local area are realized, and a closed-loop control mechanism based on torque monitoring is established.

The invention relates to the field of concrete testing, in particular to an eccentric compression test device and method for an FRP rib concrete column. Comprising a control system and a spring integration device, the spring integration device comprises a cover plate, a force sensor and a plurality of spring devices, the spring devices are detachably connected with the cover plate, the plurality of spring devices are arranged in an array, and the control system can perform pressure distribution adjustment on each spring device to realize an eccentric loading test on the FRP reinforced concrete column. The spring integrated device disclosed by the invention can convert the axial compression effect of a conventional axial press actuator into any required eccentric loading mode, so that the implementation of a complex eccentric loading working condition is ensured, the safety of an eccentric loading test is greatly enhanced, and the stability of the eccentric loading test is improved by accurately adjusting the rigidity in the spring device. And fine adjustment of eccentric force can be realized, so that the test precision under various complex eccentric loading test working conditions is improved.

The invention relates to the technical field of oilfield development, in particular to a reservoir supercritical carbon dioxide fracturing soaking production simulation method and device. Well cementation is simulated; fracturing simulation: placing the core sample subjected to well cementation in a core holder, applying axial pressure and confining pressure to the core sample, simulating stratum triaxial stress at a required temperature, obtaining initial experimental data of the core sample at the moment, injecting supercritical carbon dioxide into the core sample through a shaft, and obtaining experimental data during core fracturing; soaking is simulated, and the core sample enters a soaking stage after being fractured; carrying out production simulation, enabling the core sample to enter a flowback stage under a specific return pressure condition, and recording experimental data of the core sample in the flowback stage; and performing three-dimensional imaging analysis. According to the method, the spatial distribution of the crude oil after the supercritical carbon dioxide fracturing of the unconventional reservoir can be monitored in real time, and the characteristics of the cracks formed after the fracturing and the crude oil recovery capacity are quantitatively evaluated.

The invention provides a method for correcting a force thermal vibration finite element model of a reinforced thin-wall cylinder, and belongs to the technical field of vibration analysis of thin-wall cylinder structures. According to the method, firstly, simulation and test modal frequencies under different working conditions are obtained by carrying out simulation and test modal analysis on the reinforced thin-wall cylinder at different temperatures and in different axial pressure ranges; secondly, defining an objective function, a decision variable and a feasible region of an optimization problem on the basis of relative errors of modal frequencies under the same vibration mode simulation and test conditions, and performing optimization analysis on key characteristic parameters influencing the modal frequencies of the structure by using sensitivity analysis, an agent model and a sparrow search algorithm; and finally, based on the optimized key characteristic parameters, establishing a force thermal vibration finite element model of the reinforced thin-wall cylinder meeting the target precision requirement. According to the method, the problem of insufficient precision of a structural finite element model correction method under the complex working condition can be solved, and high-precision simulation analysis of the hypersonic aircraft under the complex working condition is realized.

Provided are a method and apparatus for calibrating contact parameters of electrode materials, and a computer storage medium. The method includes the following operations. A discrete element simulation test is performed on an electrode material based on a calibration model and calibration ranges of contact parameters of the electrode material when an axial force-displacement curve of a target pellet of the electrode material meets an adaption condition of the contact model; then a simulated axial pressure-axial strain relationship of the electrode material is acquired based on a target discrete element simulation parameter of the electrode material; whether the contact parameters are calibrated successfully is judged based on this relationship; and when the contact parameters are calibrated successfully, calibration results of the contact parameters are determined.

The invention relates to the technical field of aluminum alloy profile processing, and particularly discloses a super-long thin-wall aluminum alloy profile anti-deformation vertical quenching method which comprises the following steps: S1, determining mechanical parameters, and obtaining the maximum equivalent buckling axial pressure P of a to-be-quenched aluminum alloy profile; s2, determining the maximum constraint length of a single section: further calculating the maximum allowable length of the single constraint section of the to-be-quenched aluminum alloy section; S3, determining a minimum constraint section; S4, carrying out solid solution quenching: equally dividing the to-be-quenched aluminum alloy section according to the minimum constraint section N, and carrying out section marking in the radial direction from the bottom to the top, the adjacent segment marking positions and the top of the sectional material are restrained and fixed; and after fixation, solid solution quenching is carried out, and after solid solution quenching is completed, the profile is taken out. The vertical quenching device is suitable for vertical quenching requirements of various ultra-long thin-wall aluminum alloy profiles with complex sections, and the profiles are effectively prevented from being deformed in the vertical quenching process.

The invention provides a high-temperature and high-pressure rock triaxial and hydraulic fracturing test system capable of loading a plurality of samples in different bins, which comprises a fracturing test bin arranged in a thermal insulation bin, a computer display, control and storage system is arranged outside the fracturing test bin, and the fracturing test bin is controlled by signals of a high-temperature heating and control system, an axial pressure loading and control system, a confining pressure loading and control system, a fracturing fluid injection pump and a control system; the computer display, control and storage system is respectively in communication connection with the high-temperature heating and control system, the axial pressure loading and control system, the confining pressure loading and control system, the fracturing fluid injection pump and control system as well as an acoustic emission monitoring system and an injection pressure monitoring system which are arranged in the fracturing test bin; the fracturing test cabins are arranged in different cabins; the system comprises a high-temperature and high-pressure triaxial test method and a high-temperature and high-pressure hydraulic fracturing test method. The device has the advantages that the test efficiency is improved, the test period is shortened, a plurality of rock core samples can be tested at the same time, and a visual contrast test can be formed.

The utility model relates to the technical field of detection and testing, and provides a pipe fitting torsion testing machine. The pipe fitting torsion testing machine comprises a base, a driven mechanism, a driving mechanism and a vertical loading mechanism, a groove is formed in the upper surface of the base, a sliding groove is further formed in the upper surface of the base, and the driven mechanism is connected into the groove. According to the pipe fitting torsion testing machine provided by the utility model, a torsion load loading system, an axial pressure load loading system and a transverse pressure load loading system are highly integrated, so that torsion, axial and bending three-axis composite loading can be realized on single equipment unprecedentedly; the real stress environment of pipe fittings such as geological drill rods under extreme working conditions is reproduced to the maximum extent, compared with a traditional single-axis or two-dimensional loading test, the test result can more accurately predict the actual service performance and failure mode of the pipe fittings, and the applicability is wider.

A rotary mechanical shaft end fluid pressure adjusting device comprises a circular ring and axial flow guide grooves, the axial flow guide grooves are evenly distributed in the inner surface of the circular ring in the circumferential direction, the groove shapes are logarithmic spiral lines or parabolas or involutes, and the number of the axial flow guide grooves is 30-120. The circular ring is used for being fixed to the inner surface of the stator, and a radial gap is formed between the circular ring and the rotor. According to the invention, the pressure of the flowing fluid at the shaft end can be reduced or increased in the axial direction, the adjusted pressure can further meet the performance requirements of subsequent sealing or other parts, and the function completeness and stability of the whole machine are guaranteed.

The invention relates to a multifunctional test loading device for simulating bending shear torsion performance of a wind power tower, which comprises a counter-force column, a counter-force longitudinal beam, a counter-force cross beam and four actuators, and is characterized in that the counter-force cross beam is fixed at the top of the counter-force longitudinal beam through a bolt and is connected with a first actuator for axially applying pressure; the bottom of the tower drum is connected and fixed through a loading support with a kidney-shaped hole, and the end of the tower drum is connected with a loading beam through a conversion piece and abuts against a first actuator for axial pressure applying and loading. A fourth actuator on one side of the reaction wall is used for applying horizontal shearing force and torque; second and third actuators on the upper and lower sides of the counter-force longitudinal beam are used for applying bending moment; according to the device, loading of multiple load types can be achieved on the tower drum, the complex stress condition possibly borne by the tower drum in the actual use process can be simulated, and loading of any change of a single load of the tower drum can also be simulated; the device is suitable for loading and fixing tower barrels of different types and sizes; and the influence of torsional deformation and horizontal displacement on vertical load loading can be reduced through structural measures.

A combined three-dimensional force / torque sensor. A plurality of discrete one-dimensional force sensors (11, 12, 13, 14) are used to measure force components, and a conduction flange (2) is used to transmit an external force. The combined design effectively reduces inter-dimensional coupling and has a simple structure. The lateral torque and the axial pressure are monitored in a differential form and a summation form, thereby effectively improving the sensitivity and measurement accuracy of the sensor. Further disclosed is a miniature calibration system established by using the combined three-dimensional force / torque sensor. The calibration system has a small size and a simple structure, is easy to assemble and convenient to carry and transfer, and is capable of on-site calibration.

The invention relates to the technical field of well drilling auxiliary tools, in particular to a rotary blowout preventer delivering and taking tool which comprises a center rod, an outer shell, an elastic component and a guide limiting groove. One end of the center rod is in butt joint with a rubber core connecting disc of the rotary sealing assembly; one end of the outer shell is rotationally arranged on the center rod in a sleeving manner, and a plurality of limiting pins are arranged at the other end of the outer shell in the circumferential direction; the elastic part is arranged in the outer shell and axially abuts against the center rod and the rubber core connecting disc; the limiting pin enters the guide limiting groove from the inlet through axial pressure, is limited and reversed in the guide limiting groove through the reversing limiting structure and is moved out of the outlet. When the rotary sealing assembly is put in and taken out, the tool and the rotary sealing assembly can be installed together through rotation of the outer shell, the tool and the rotary sealing assembly can be separated without rotating a center rod to find the position or shearing a limiting pin, residues do not exist in a well, and the safety performance is improved.

The invention provides a dynamic heat-water-force coupling test device and test method, and relates to the technical field of rock performance test.The device comprises a sample chamber for containing a rock sample; the heat loading assembly, the pore water pressure loading assembly and the force loading assembly are integrally arranged; the heat loading assembly comprises a heating element and a cooling element so as to simulate an environment in a wide temperature range or under a freezing and thawing cycle condition; the pore water pressure loading assembly is communicated with the rock sample to establish pore water seepage loading; an axial pressure loading element of the force loading assembly applies dynamic axial pressure to the rock sample, and a confining pressure loading element of the force loading assembly applies dynamic confining pressure to the rock sample; the sealing sleeve wraps the rock sample so as to isolate the confining pressure medium from the liquid medium. According to the device provided by the invention, three dynamic loads including the dynamic temperature, the dynamic pore water pressure and the dynamic mechanical stress can be synchronously applied and accurately controlled in a single device, so that a rock sample is subjected to a mechanical test in a vivid dynamic multi-field coupling environment.

The present invention relates to the field of rock mechanics technology, and provides a three-dimensional water absorption swelling multifunctional experimental machine and method for chemical swelling rock, comprising a triaxial high-temperature and high-pressure reaction chamber, the triaxial high-temperature and high-pressure reaction chamber is respectively connected with a confining pressure loading controller, a water pressure loading controller, a temperature controller, an axial pressure loading controller, a pH value monitor and a data acquisition and analyzer; the triaxial high-temperature and high-pressure reaction chamber includes a set of internal cavity and an external cavity, a sealing liner sleeve is provided between the internal cavity and the external cavity, a rock sample is provided in the internal cavity, a water-permeable pressure hoop is provided outside the rock sample, and the sealing liner sleeve is connected with a circumferential stress-strain sensor through a displacement structure.

A method for preparing a shear-assisted extruded material from a powder billet is provided, the method comprising providing a billet of material in substantially powder form; applying both axial and rotational pressure to the material to deform at least some of the contacted material; and extruding the material to form an extruded material. A method for preparing shear-assisted extruded material is provided, the method comprising applying both axial and rotational pressure to stock material to form an extruded material at a rate between 2 and 13 m / min. A method for preparing shear-assisted extruded material is provided. The method comprises applying both axial and rotational pressure to stock material to form an extruded material; and aging the extruded material for less than 3 hours. A method for preparing shear-assisted extruded material is provided. The method comprises providing a stock material for shear-assisted extrusion; and applying both axial and rotational force to the stock material to form an extruded material, wherein the axial force does not decrease during the extrusion.

The invention discloses a dynamic permeability testing system and method for hydrate core production by a pressure reduction or heat shock method, and the system comprises a dynamic permeability testing unit (1) which is used for the preparation of a natural gas hydrate core sample and the measurement of permeability; the gas and liquid injection unit (2) is used for injecting required gas and liquid into the dynamic permeability testing system; the hydraulic oil control unit (3) is used for applying axial pressure and confining pressure to the dynamic permeability testing system; the gas-liquid separation metering unit (4) is used for metering the gas-liquid flow at the outlet; and the data acquisition monitoring and control unit (5) is used for monitoring data of each unit and controlling each unit to work. According to the invention, the natural gas hydrate-containing rock core can be subjected to pressure drop under the triaxial stress condition or the production dynamic permeability test by a heat shock method.

The application discloses a blowout preventer suspension type pressure testing tool and method, which comprises a cup seal packer, a suspension body and a cup seal packer center body. The cup seal packer is sleeved on the outer wall of the cup seal packer center body and is located below the suspension body. The upper end of the cup seal packer center body is suspended on the suspension body, and the suspension body is provided with an axial pressure transmission channel. The application can make the pressure testing pressure and the weight of the pipe column all act on the suspension body, effectively change the force of the pipe column during the blowout preventer pressure testing, improve the construction safety, and improve the success rate and accuracy of the blowout preventer pressure testing.

The invention provides a test system and method for simulating in-situ reservoir electric detonation fracturing through gas-liquid coupling pressure application. The test system comprises a pressure chamber used for installing a test piece, a stress loading device, a gas-liquid coupling device and a high-voltage electric detonation fracturing device with a discharge electrode. A detonation hole is formed in the top of the test piece; the stress loading device is connected with the pressure chamber and is used for applying axial pressure and confining pressure to the test piece in the pressure chamber to simulate ground stress; the gas-liquid coupling device can inject water, gas, water and gas into the pressure chamber; and a discharge electrode of the high-voltage electric detonation cracking device can be arranged in a detonation hole of the test piece to crack the test piece. The device has the characteristic of being capable of applying axial pressure and confining pressure, controllable explosion energy can be achieved, coupling of multiple physical fields and high accuracy of energy output are guaranteed, and self-water injection, self-gas injection and up-down water pumping and draining are achieved through the gas-liquid coupling device; and accurate and in-depth research on the hole fracture development law, gas migration, permeability and the like after the in-situ reservoir high-voltage electric pulse technology is realized is facilitated.

The invention relates to the field of in-situ leaching mine production, and provides a horizontal well washing simulation experiment device which comprises an ore bed simulation system used for simulating an ore bed environment and comprising a box body, the top of the box body is of an open structure, the box body is filled with ore bed rock powder to construct a simulation rock stratum, and a plurality of injection connectors are formed in the side wall of the box body; the impact force testing system is buried in the simulated rock stratum and comprises a self-advancing force and axial pressure testing device, a radial pressure testing device and a bent connecting pipe, the self-advancing force and axial pressure testing device and the radial pressure testing device are connected through a screen pipe, and the first end of the bent connecting pipe extends into the rock stratum to be connected with the jet radial pressure testing device; the second end penetrates out of the open structure of the box body; and the sand washing well washing system is detachably arranged in the bent pipe in a penetrating manner and is used for being connected with the well washing impact force testing system so as to carry out jet flow well washing, air well washing and liquid pumping simulation experiments. The in-situ leaching uranium mining production environment can be reduced, and evaluation of various well washing tools is achieved.

The invention relates to the technical field of automatic control, and discloses a pressure-sensing precision mechanical part polishing brush system and method.The system comprises a multi-mode pressure sensing module, an elastic feedback execution module, a self-adaptive trajectory planning module and a closed-loop quality control module; establishing a contact pressure distribution model and analyzing pressure balance, and generating local and global pressure compensation instructions according to the pressure balance; an elastic feedback mechanism is driven to dynamically adjust the axial pressure of the brush, and meanwhile, a self-adaptive polishing path containing a pressure compensation weight is planned by combining the morphology data; the feeding speed and the rotating angle are cooperatively adjusted in the polishing process, and precise machining of the complex curved surface is achieved; and finally, the surface roughness is detected through an optical sensor, and technological parameters are optimized in a closed-loop mode. The problems of surface scratches and contour distortion caused by uneven pressure distribution are solved, and the machining quality and consistency of precision parts are improved.

The utility model discloses a novel three-dimensional force sensor, which comprises an elastic sensor main body with a cylindrical structure, the upper part of the elastic sensor main body is provided with a first annular groove, the lower part of the elastic sensor main body is provided with a second annular groove, and four mounting positions are arranged in the second annular groove; an axial strain gauge is attached to the first annular groove, and three of the four installation positions are each provided with a transverse strain gauge. Thus, axial pressure information is received through the axial strain gauge in the first annular groove, transverse pressure information is received through the three transverse strain gauges, and the application scene of the sensor is improved.

The utility model relates to the technical field of printing equipment, in particular to a tape cartridge and printing equipment, the tape cartridge comprises a first shell and a second shell, a mounting column is arranged on the wall face, opposite to the second shell, of the first shell, and the outer wall face of the mounting column is sleeved with an elastic piece; a ribbon supply wheel is arranged on the surface, opposite to the first shell, of the second shell, and when the ribbon cartridge is installed on the printing equipment, the end, away from the first shell, of the ribbon supply wheel is connected with the printing equipment in a clamped mode; the colored tape supply wheel is provided with a containing cavity, when the first shell and the second shell are installed, at least part of the installation column is embedded into the containing cavity, the elastic piece is located between the inner wall face of the containing cavity and the outer wall face of the installation column, and the compressed elastic piece applies axial pressure to the colored tape supply wheel. According to the tape cartridge provided by the invention, the compressed elastic piece provides downward pressure for the ribbon supply wheel, the downward pressure can be converted into tension required by the ribbon supply wheel, and the tension of the ribbon in the printing process is more stable.

The invention relates to a roller shutter structure. A roller shutter structure comprises a winding drum wound with curtain cloth, and a winding drum supporting piece, a torque assembly and an end supporting piece are arranged in the winding drum. The torque assembly enables the winding drum to bear torsion N; a force conversion part is arranged between the winding drum supporting piece and the end supporting piece, and the force conversion part can change the friction force F between the winding drum supporting piece and the end supporting piece by changing the pressure P in the axial direction; gravity G, torsion N and friction force F of the curtain cloth are simultaneously applied to the winding drum, N = G + / -F in the up-down movement process of the curtain cloth, and the curtain cloth is made to be static at any position without external force. The roller shutter structure can be installed by directly utilizing axial pressure, can adapt to installation of roller shutters with different widths and different fabrics, and is convenient to adjust and good in stability.

The invention relates to the technical field of ocean engineering, in particular to a laboratory calibration method for reducing the flow velocity of a gravity anchor recovery force nozzle. The method comprises the following steps: S1, obtaining a field soil body needing gravity anchor recovery operation through a thin-wall soil sampler, and preparing a triaxial test sample; s2, calculating confining pressure and axial pressure according to field conditions; s3, the prepared sample is installed on a triaxial apparatus, the calculated confining pressure and axial pressure are applied, initial back pressure is applied through a back pressure system of the triaxial apparatus, and the water injection amount changing along with time is recorded; s4, performing a multi-pressure-difference test and fluid viscosity correction based on the initial back pressure applied in S3; and S5, according to a test result, carrying out actual working condition flow velocity conversion. The back pressure value is changed, the corresponding water injection rate and time are recorded, and the flow velocity is corrected in combination with factors such as fluid viscosity, so that the accuracy of an experimental result is improved, and a scientific basis is provided for optimizing a nozzle design.

The invention discloses a martensite ring piece production method which comprises the steps that a steel ingot is heated in a high-temperature furnace at 900-950 DEG C, the heat preservation time is calculated according to a formula, and Q is the effective thickness of the steel ingot; the heated steel ingot is sequentially subjected to drawing-out, mandrel supporter upsetting and mandrel supporter punching, and a primarily-forged ring blank is obtained; the thickness of the primary forging ring blank is 1.08-1.15 times that of a finished product ring piece, the primary forging deformation is 25%-30%, and the heat preservation time is calculated according to a formula; the initial forging ring blank is vertically placed on a profiling rolling and expanding workbench, a pre-forging hammer is controlled to apply axial pressure to the upper end of the blank at the speed of 0.3-0.5 mm / s, so that the upper end is expanded in the radial direction to form a pre-forging section with the outer diameter D1 being equal to (1.2-1.5) D, the designed outer diameter of the D-product ring piece is achieved, and meanwhile an annular groove with the depth h1 being equal to (0.05-0.1) D is stamped in the outer surface of the pre-forging section; and a precision forging roller is switched to conduct multi-pass rolling on the pre-forged section, the radial feed amount delta r of each pass is equal to (0.02-0.05) D, the final forging outer diameter D2 is controlled to be equal to (1.8-2.2) D, the groove depth h2 is controlled to be equal to (0.15-0.25) D, and the ring piece with the reinforcing groove is formed.

The invention provides a wet steam real-time metering and dynamic regulating and controlling device and method.The device comprises a Venturi nozzle, a swirl vane, a radial center pressure guiding pipe, a radial pipe wall pressure guiding pipe, an upstream axial pressure guiding pipe and a downstream axial pressure guiding pipe; the swirl vane carries out swirl shaping on wet steam flowing out of the Venturi nozzle, gas-liquid two-phase fluid phases are isolated, the radial center pressure guiding pipe measures the pressure of the radial center point in the pipeline, the radial pipe wall pressure guiding pipe measures the pressure on the inner wall of the pipeline, the upstream axial pressure guiding pipe measures the axial incoming flow pressure of the pipeline, and the upstream axial pressure guiding pipe measures the axial incoming flow pressure of the pipeline. And the downstream axial pressure guide pipe measures the pressure of the pipeline after axial shaping. According to the real-time metering and dynamic regulation and control device and method for the wet steam, a specially-designed online monitoring device for four parameters of flow, dryness, temperature and pressure of the rotational flow double-differential-pressure type wet saturated steam is adopted to evaluate and analyze the dynamic regulation and control effect.