1056 results about "Outer annulus" patented technology

The present invention relates to a completely top-inlet burner, comprising a base, an outer ring fire cover and an inner ring fire cover, wherein the base has a central cavity and an annular cavity surrounding the central cavity, wherein both the central cavity and the annular cavity are open at the top, and the inner ring fire cover and the outer ring fire cover are respectively covered in the central cavity and the annular cavity to form an inner ring mixing cavity and an outer ring mixing cavity respectively, wherein the outer ring fire cover comprises a fire cover body, wherein the fire cover body comprises a top wall, an inner ring wall and an outer ring wall, wherein the top wall is inclined from inside to outside along the circumferential direction, and outer ring fire holes are arranged on the top wall along the circumferential direction to form a flame zone, and a fire transfer groove extending up and down is provided at the upper end of the inner ring wall of the outer ring fire cover, wherein the fire transfer groove is connected with the outer ring mixing cavity, and the upper end of the fire transfer groove is adjacent to the flame zone. In the present invention, the lower end of the fire transfer groove is close to the inner ring fire cover, and the upper end is close to the flame zone on the outer ring fire cover, thereby improving the success rate of fire transfer.

The invention discloses an elastic support integrated bearing and squeeze film damper integrated structure with outer ring radial holes. The elastic support integrated bearing and squeeze film damper integrated structure comprises an elastic support integrated outer ring, a bearing inner ring, a retainer, a rolling body, a squeeze film damper, a bearing seat and the like. The elastic support integrated outer ring adopts the integrated design of a squirrel-cage type elastic support and the bearing outer ring, the radial size is reduced, the centering precision is improved, and an oil storage groove and a radial oil hole are formed in the outer side wall of the bearing outer ring of the integrated structure; the extrusion oil film damper is located on the outer side of the elastic support integrated bearing, and an oil film is communicated with a radial oil hole in the bearing outer ring, so that bearing lubrication and the extrusion oil film damper share a lubricating oil path; radial lubricating oil lubrication of the bearing is achieved through the arrangement of the radial oil holes, and the situation that the bearing is damaged due to lack of oil lubrication under the extreme working condition is avoided; meanwhile, the oil storage grooves and the radial oil holes can effectively promote flowing of lubricating oil in an oil film, formation of a dead cavity of the squeeze oil film damper is avoided, and the vibration reduction effect of the squeeze oil film damper is enhanced.

The utility model discloses a carbon fiber bicycle wheel rim which comprises an annular wheel rim body, the wheel rim body is integrally formed by carbon fibers, the wheel rim body comprises an outer ring wall, an inner ring wall and two side walls connecting the outer ring wall and the inner ring wall, a semi-closed tire groove is formed in the outer side of the outer ring wall, and the outer side of the tire groove is connected with the inner ring wall. A closed cavity is defined by the inner side of the outer ring wall, the inner ring wall and the side wall, a connecting part is arranged in the cavity, one end of the connecting part is connected with the outer ring wall, the other end of the connecting part is connected with the side wall, and a hollow channel is defined by the connecting part, the outer ring wall and the side wall. According to the carbon fiber bicycle rim, the hollow channel is formed between the outer ring wall and the side wall of the carbon fiber bicycle rim through the arrangement of the connecting parts, the weight of carbon fibers is basically unchanged, but the strength and the impact resistance of the carbon fibers are effectively improved, the relation between the weight and the strength of the carbon fiber bicycle rim is well balanced, and the service life of the carbon fiber bicycle rim is prolonged. And the overall performance of the rim is effectively improved.

The invention discloses a gas lift reverse circulation drilling starting pressure and circulation gas supply pressure calculation method. The method comprises the following steps that S1, hydrostatic pressure of the bottom of an inner pipe of a double-wall drill rod is calculated; s2, calculating the friction loss pressure of compressed air of an outer annulus of the double-wall drill rod; s3, calculating the friction loss pressure of the compressed air flowing through the earth surface gas transmission channel; s4, calculating the local pressure loss of the compressed air passing through the orifice in the gas-liquid mixer from the outer pipe of the double-wall drill rod; s5, calculating the liquid phase flow friction pressure loss of the inner pipe of the double-wall drill pipe; s6, calculating the liquid-phase flow friction pressure loss of the deslagging pipeline; s7, calculating the three-phase flow pressure drop of the inner pipe of the double-wall drill pipe; and S8, the starting pressure and the circulating air supply pressure are calculated. According to the method for calculating the starting pressure and the circulating gas supply pressure of the gas lift reverse circulation drilling, the starting pressure and the circulating gas supply pressure of the gas lift reverse circulation drilling can be accurately and conveniently calculated by accurately calculating the pressure of each part of the gas lift reverse circulation drilling process, and a theoretical basis is provided for stable and efficient operation of a circulating system.

A ring for wearing by a user includes a rigid outer annular body and a flexible inner annular body. In one embodiment, the outer annular body is a rigid material formed from a process other than injection molding, and the inner annular body is flexible and formed from an injection molded process. The outer annular body is attached to the inner annular body. The inner annular body may be machined to curve from longitudinal ends of the inner annular body to an inner surface of the inner annular body after the inner annular body is joined to the outer annular body in order to provide a comfort fit. Alternatively, the inner annular body may be molded with the comfort fit curvature. In one embodiment, the outer annular body has at least one strain relief recess in an inner surface thereof, and the inner annular body fills said strain relief recess.

The utility model discloses an oil-resistant damping sealing washer for an automobile, which relates to the technical field of sealing ring structures and comprises a lower gasket and an upper gasket. The upper gasket is provided with an insertion port; the top of the lower gasket is fixedly connected with an outer ring plate and an inner ring plate, and the outer ring plate surrounds the inner ring plate to form an annular gap; the top of the inner ring plate is fixedly connected with a first ring plate and a second ring plate; the bottom of the upper gasket is fixedly connected with an inserting plate, the inserting plate is inserted into the gap between the first annular plate and the second annular plate in a matched mode, excellent sealing performance is guaranteed through double sealing and elastic adaptation, and meanwhile the anti-corrosion capacity is enhanced through oil-resistant rubber materials. The oil-resistant damping sealing washer is simple in structure, remarkable in damping and buffering effect and easy to mount and dismount, saves cost resources and solves the problem of replacement cost of the oil-resistant damping sealing washer for the automobile.

The invention relates to the technical field of feed circular mold cleaning, in particular to a feed circular mold efficient cleaning device which comprises a second cylinder, a light block, a spraying assembly, a driving assembly and a lifting assembly. A cylinder II is fixedly connected in the cylinder I; a plurality of light blocks are connected to the outer ring face of the second cylinder in an annular array mode. The sections of the light blocks are isosceles triangles; the cylinder I is connected with a spraying assembly; clean water is blocked through a second cylinder, so that the clean water can be prevented from carrying impurities to be sprayed into a through hole in the other side of the feed circular mold, the cleaning efficiency is improved, meanwhile, the clean water splashed after making contact with the second cylinder is intercepted through a light block, the clean water is prevented from carrying impurities to be splashed back to the inner side face of the feed circular mold, and the cleaning effect is ensured. And the side, close to the feed circular mold, of the light block is arranged to be a long inclined face, so that when the clear water impacts the long inclined face of the light block, the clear water can flow towards the second cylinder along the long inclined face, the clear water sputtering phenomenon can be reduced, and the cleaning effect is further ensured.

The invention relates to the technical field of mixing, and specifically discloses a mixing device for sustainable aviation fuel, comprising an axle rotatably arranged in a container, wherein a plurality of mixing components are arranged in sequence from top to bottom in the container, wherein the mixing component comprises an inner ring, an outer ring, and a mixing piece fixedly arranged between the outer side of the inner ring and the inner side of the outer ring, wherein a material cavity for loading a catalyst is arranged in the mixing piece, two shielding plates are slidably arranged on the mixing piece, a rack matched with the shielding plates on the mixing piece is slidably arranged on the inner ring, a driving rod is coaxially slidably arranged on the axle, and a driving assembly corresponding to the mixing assembly one by one is arranged on the driving rod, when the driving rod rotates and the driving rod moves upward at equal intervals intermittently, a plurality of inner rings can rotate in sequence from bottom to top, a plurality of annular cavities can be connected with a filling ring in sequence, and then a plurality of inner rings can rotate together and the filling ring is blocked by the driving rod, and the invention is conducive to uniformly mixing waste grease and glycerin, and improving the mixing efficiency with the catalyst.

The invention discloses a sampling device for mining area geological survey, and belongs to the field of sampling devices.The sampling device comprises a main sampling motor arranged at the bottom end of a probing device, a central fixing assembly is inserted into the inner wall of an output shaft of the main sampling motor, and the outer side of the output end of the main sampling motor is connected with an outer ring shaft disc through an outer side stabilizing assembly; the inner side wall of the outer ring shaft disc is connected with three planetary discs in a meshed mode through tooth grooves, and the three planetary discs are arranged in an annular array mode with the center fixing assembly as the axis. Through cooperative arrangement of the outer ring shaft disc and the planetary disc, the outer ring shaft disc is driven by the main sampling motor to rotate and can drive the internal planetary disc to revolve around the outer ring shaft disc and drive the planetary disc to rotate, so that soil and rock strata can be quickly and stably broken by the cutting and sampling crushing heads, and the situation that the cutting and sampling crushing heads are blocked when being screwed in one by one is avoided; the planetary plate is driven by the outer ring shaft disc to rotate to provide larger torsion, so that the cutting and sampling crushing head is easier to break a rock stratum with hard texture.

The invention discloses a ring pull type sealing gasket. The ring pull type sealing gasket comprises a functional layer and a bonding layer, one of the functional layer and the bonding layer is provided with an electromagnetic induction heating sheet, and the bonding layer is provided with an adhesive sealing layer located on the lowest side; the bottom surface of the functional layer and the top surface of the bonding layer are strongly bonded and compounded through an adhesive, and one of the bottom surface of the functional layer and the top surface of the bonding layer is directly coated with a release block formed by a release coating; the functional layer is provided with an annular tearing line, the annular tearing line divides the functional layer into an outer ring area and an inner ring area, and the inner ring area comprises a lifting neck part connected with the outer ring area, a lifting part connected with the lifting neck part and a hollow area located between the lifting part and the lifting neck part; the release block is opposite to the lifting part; and the functional layer is also provided with a joint tearing line which is connected with one side of the lifting part and the annular tearing line. The sealing structure has the advantages of being convenient to open and good in sealing effect when being pressed and sealed again.

A ring for wearing by a user may include a rigid outer annular body and a flexible inner annular body. The outer annular body may be a rigid material, and the inner annular body may be flexible and formed from an injection molded process. The outer annular body may be attached to the inner annular body. The inner annular body may be machined to curve from longitudinal ends of the inner annular body to an inner surface after the inner annular body is joined to the outer annular body in order to provide a comfort fit. The inner annular body may be molded with the comfort fit curvature. The outer annular body may have at least one strain relief recess in an inner surface thereof, and the inner annular body may fill the at least one strain relief recess.

The invention discloses a powder concentrator for powder materials, and relates to the technical field of powder concentrators, the powder concentrator comprises an annular volute and a grading area arranged in the annular volute, the grading area comprises a plurality of guide blades, the guide blades are arranged in the annular volute in an annular array mode, and the angles of the guide blades can be adjusted according to different particle sizes; the rotating cage is rotationally installed in the annular volute and located in the center of the inner sides of the multiple guide blades; materials enter the base flow guide cone and flow upwards; annular airflow fed by the annular volute on the periphery enters the rotating cage through the tangential angle regulated and controlled by the guide blades, and is separated under the rotating action of the rotating cage. The invention provides a dynamic powder selecting channel with an inner ring for supplying air materials and an outer ring for discharging coarse materials for the first time, and a complete spiral shear flow field is constructed; an annular auxiliary air supply fan is externally arranged, the front shearing and particle staying path of the rotating cage is enhanced, and separation dead angles are avoided; the angles of the guide blades are adjustable, different particle size / productivity requirements are met, and the working condition matching performance is improved.

The invention belongs to the technical field of aero-engines, and discloses an inclined combustion chamber which comprises a diffuser, an outer casing, an inner casing, a head supporting ring, a flame tube outer ring and a flame tube inner ring. An annular cavity is formed between the outer casing and the inner casing, the diffuser is arranged at an air inlet of the annular cavity, an air outlet of the diffuser is communicated with the air inlet of the annular cavity, the flame tube outer ring and the flame tube inner ring are both located in the annular cavity, the flame tube outer ring and the flame tube inner ring form a flame tube flow channel, and the flame tube outer ring and the outer casing form an outer ring flow channel. The flame tube inner ring and the inner casing form an inner ring flow channel; the center line of the air outlet of the diffuser, the center line of the flame tube runner, the center line of the outer ring runner and the center line of the inner ring runner are parallel to one another and form included angles with the axial center line of the rotating shaft. According to the inclined combustion cylinder, the radial fall of an inlet and an outlet is fully utilized, the axial length of a combustion chamber is short, and airflow flows smoothly.

The invention discloses a double-ring shear type acceleration sensor and a forming method thereof, and belongs to the field of sensors. The sensor comprises a base, an annular mass block, a first piezoelectric ring, a second piezoelectric ring, an upper cover and a connector, the base comprises a bottom plate, an outer annular surrounding plate and an inner annular surrounding plate, the outer annular surrounding plate and the inner annular surrounding plate are coaxially arranged, a second threaded hole is formed in the outer annular surrounding plate, and the connector is installed in the second threaded hole and is in threaded fit with the second threaded hole; a first annular boss and a first annular positioning step are arranged on the outer annular face of the inner annular surrounding plate, and a second annular boss and a second positioning step are arranged on the inner annular face of the outer annular surrounding plate. The first piezoelectric ring and the second piezoelectric ring are polarized in the same direction in the axial direction. The double-layer annular nested structure ensures the lateral bending resistance of the sensor, and the lightweight design increases the bandwidth of the sensor. The structure center penetrating type mounting hole can ensure tight connection between the sensor and an object to be detected, so that the detection precision of the acceleration sensor can be improved.

The invention relates to the technical field of bearing accessory assembling, in particular to automatic assembling equipment for bearing production. Comprising a bottom plate, a machine table is arranged at the top of the bottom plate, a discharging hole, a through hole and a notch are formed in the machine table, a rotary table motor is further arranged on the machine table, a rotary table of the rotary table motor is connected with a rotary table, and storage holes are annularly formed in the rotary table at intervals. Lubricating oil is smeared on the surfaces of the balls in advance when the balls are added between the inner ring and the outer ring, the friction force between the balls and the inner ring and the outer ring is remarkably reduced, abrasion to the balls in the extrusion process is reduced, the roundness and smoothness of the balls are improved, and therefore the service life of the balls is prolonged; moreover, as the abrasion of the balls is reduced, the quality of a single bearing is guaranteed, meanwhile, the problem that the quality of products among batches is unstable due to the abrasion of the balls is avoided, the defective rate is reduced, and the consistency of the overall product quality is improved.

The utility model discloses a two-stage spray cyclone integrated with a fuel nozzle. The two-stage spray cyclone comprises an outer ring body, a middle ring body, an inner ring body, a plurality of clockwise guide vanes and a plurality of anticlockwise guide vanes, an annular first-stage rotational flow space is formed between the inner ring body and the middle ring body, an annular second-stage rotational flow space is formed between the middle ring body and the outer ring body, and a middle shaft area is formed in the inner ring body; the clockwise guide vane is mounted in one of the first-stage rotational flow space and the second-stage rotational flow space, and the anticlockwise guide vane is mounted in the other rotational flow space without the clockwise guide vane; a plurality of oil spraying holes are respectively distributed on the inner sides of the outer ring body and the middle ring body, and a plurality of oil spraying holes are distributed on the inner side of the inner ring body and / or an oil spraying nozzle is arranged at the rear part of the middle shaft area. The oil spraying device has the advantages that oil is sprayed in a layered mode from inside to outside and combined with reverse rotational flow, the oil spraying range is remarkably enlarged, atomization of sprayed oil and full and even mixing of the sprayed oil and air are better facilitated, and the energy conversion efficiency of fuel oil can be improved.

The invention discloses a ventilation connecting structure and system for a large pipeline of a ship ammonia fuel engine, and belongs to the technical field of ships, the ventilation connecting structure comprises a first ventilation flange and a second ventilation flange which are connected in a paired mode, and an inner ring sealing structure is arranged at the contact position of the first ventilation flange and the second ventilation flange; an outer ring sealing structure is arranged outside the inner ring sealing structure, an annular discharging groove is formed between the inner ring sealing structure and the outer ring sealing structure, and a ventilation outlet and a cleaning opening are formed in the outer portion of the first ventilation flange and communicate with the annular discharging groove. The ventilation structure of paired installation flanges is simplified, the layout of a ventilation system is optimized, the manufacturing cost is low, and installation is convenient; the required negative pressure ventilation air quantity is small, the type selection capacity and size of each related device and accessory are small, and the initial investment cost, the later maintenance cost and the operation cost are low; ventilation air is distributed in a centralized mode, and through switching of on-off states of the ventilation stop valves, which group of flange connection in the system leaks can be distinguished and confirmed conveniently.

A soft soil layer cast-in-situ bored pile construction structure comprises a main drill rod and a drill bit rod arranged at the lower end of the main drill rod, and the main drill rod and the drill bit rod are connected through a sealing connecting ring. The construction structure further comprises a mounting ring arranged on the outer side of the outer ring face of the side, close to the drill bit rod, of the sealing connecting ring, a cutting plate arranged at the lower end of the mounting ring and connected with the drill bit rod, and a fixing ring arranged at the upper end of the sealing connecting ring. The two ends of the protective sleeve are connected with the fixing ring and the mounting ring respectively, and the outer diameter of the protective sleeve is gradually enlarged from top to bottom. By arranging the mounting ring, the cutting plate, the fixing ring and the protective sleeve, on the basis that the drill bit can be detached and cleaned, a route for guiding soft soil from the drill bit to the spiral blade is formed, accumulation of the soft soil is reduced, and the drilling effect is improved; and meanwhile, the surface of the whole device is smooth, no soft soil adhesion joints exist, and the easy-to-clean effect of the device is further improved.

The utility model discloses a tray for an electronic balance, and relates to the technical field of precision measuring instruments. The electronic balance comprises a scale pan and a base, the scale pan comprises a pan body and a mounting column, the mounting column is vertically mounted on the base, the pan body is fixed at the top of the mounting column, the tray is characterized by comprising an annular flexible bottom plate, the mounting column is sleeved with an inner ring of the annular flexible bottom plate, and the annular flexible bottom plate is fixed on the mounting column. The outer ring diameter of the annular flexible bottom plate is larger than the diameter of the disc body, and the inner ring diameter of the annular flexible bottom plate is smaller than the diameter of the disc body. And the annular flexible bottom plate is used for receiving falling materials, and the annular flexible bottom plate is provided with a breaking joint, so that the annular flexible bottom plate can be directly detached from the interval between the scale body and the base without taking down the scale, and the accuracy of a measurement result is ensured.

The utility model relates to a finish turning excircle tooling for processing high hardness thin wall cylindrical part, including support shaft sleeve, expansion sleeve, support piece, wedge block, pull rod, pressure plate, bolt and thin wall cylindrical part, the expansion sleeve is provided in the thin wall cylindrical part, the outer ring surface of expansion sleeve is matched with thin wall cylindrical part inner surface, the support shaft sleeve extends into the expansion sleeve, the support piece is provided with the wedge block, the pull rod is provided with the pressure plate, the bolt is provided with the pressure plate. Wedge blocks and a supporting piece are arranged between the expansion sleeve and the supporting shaft sleeve, the two wedge blocks are symmetrically arranged on the supporting shaft sleeve in a sleeving mode, the supporting piece is arranged between the two wedge blocks in a clamping mode, one wedge block is limited through a shaft ring of the supporting shaft sleeve, the other wedge block is limited through a pressing plate, the pressing plate is connected with a pull rod through a bolt, and the pull rod is arranged in the supporting shaft sleeve. The wedge block and the expansion sleeve are in wedge-shaped connection, and the wedge block and the supporting piece are in wedge-shaped connection. The clamp is simple in structure, the whole expansion sleeve expands outwards, a machined workpiece is evenly stressed, the clamping effect of the clamp is enhanced, and the machining precision is greatly improved.

A fuel can includes a can body, the can body contains liquid fuel and a wick with its lower end immersed in the liquid fuel, and a top cover is provided at a top of the can body. The top cover includes a ring-pull cap and a sealing cap, the ring-pull cap consists of an outer ring and a tear-off piece, the outer ring is connected to an upper opening of the can body in a sealing manner, and the sealing cap is buckled at a top end of the outer ring; a tray is provided at an upper end of the can body, and a periphery of the tray is connected to an inner wall of the can body in a sealing manner, and at least one fixing mouth for fixing the upper end of the wick provided in a middle of the tray.

A non-pneumatic tire includes an annular inner ring, an annular outer ring, and a support structure extending from the annular inner ring to the annular outer ring. The support structure includes a plurality of spokes, webbing, cells, or other open-sided support structure. The tire includes a bump stop. The bump stop includes an inner member radially extending from a radially outer surface of the annular inner ring. The inner member has a radially outer surface facing a radially inner surface of the annular outer ring. The bump stop includes an outer member radially extending from a radially inner surface of the annular outer ring. The outer member has a radially inner surface facing a radially outer surface of the annular inner ring.

The utility model discloses a fused salt storage tank heat preservation foundation which comprises a bottom plate, an inner ring wall and an outer ring wall, a ventilation pipe is arranged in the bottom plate, the inner ring wall and the outer ring wall are both arranged on the bottom plate, an inner core structure is arranged on the inner side of the inner ring wall, the inner core structure is provided with a buffer layer and a heat preservation layer from top to bottom, and an air heat insulation layer is arranged between the inner ring wall and the outer ring wall. A water collecting well is arranged between the inner ring wall and the outer ring wall, and a liquid level monitoring device and a water suction pump are arranged in the water collecting well. The high-temperature medium storage tank can be suitable for underground water or rainwater-rich areas, multi-layer water prevention, intelligent water level monitoring and drainage can be achieved, performance and strength failures of heat preservation materials are avoided, and safe operation of the high-temperature medium storage tank is guaranteed.

The invention relates to the technical field of centrifugal pump equipment, and provides a boiler water circulation centrifugal pump for an energy-saving boiler, which comprises a centrifugal pump, a pump shell and a side shell, the inner ring frame is located in the pump shell and is in butt joint with the water inlet, and impurities in water are filtered through a front filter plate and used for intercepting the impurities in the water; the arc-shaped plate is located in front of the filter plate, the opposite faces of the arc-shaped plate are attached to each other, when the filter plate rotates through an arc-shaped structure of the arc-shaped plate, impurities in meshes are scraped out to form a dredging effect, and meanwhile the arc-shaped plate is further used for guiding the impurities to the outer ring area; and the outer ring frame is located on the outer side of the inner ring frame and used for storing the intercepted impurities, and space communication is formed through a first separation net, close to the water inlet, on the inner side, so that the impurities enter the outer ring frame after being guided. During operation of the centrifugal pump, impurities in water are filtered in real time, automatic dredging treatment is formed, in addition, the blades can be cleaned in real time, the impurities cannot be adsorbed to form dirt and corrosion, and therefore the operation safety and the service life of the impeller and the boiler are guaranteed.

The invention relates to an annular combined protection tool and a using method, the annular combined protection tool comprises an upper cover plate and a lower cover plate, the upper cover plate and the lower cover plate are provided with via holes corresponding to bearing pedestal flange connecting holes, and the upper cover plate and the lower cover plate are connected through screws or studs; the lower cover plate adopts an inner and outer ring nesting structure and comprises an outer ring cover plate and an inner ring cover plate, and an adjustable sealing strip is arranged on the inner ring of the inner ring cover plate; the problems of insufficient protection, poor sealing performance and insufficient adaptability in the paint spraying process of the bearing seat are effectively solved; according to the device, the upper cover plate and the lower cover plate are combined with the adjustable sealing strip, so that tight attachment to the surface of the bearing seat is ensured, and paint particles are prevented from invading; the quick locking mechanism realizes quick mounting and dismounting through an eccentric cam and a locking handle, so that the operation efficiency is improved; an inner and outer ring nesting structure is matched with a radial adjusting mechanism, so that the device adapts to bearing seats with different sizes, and the flexibility is high; meanwhile, the buffer cushion layer effectively relieves pressure accumulation and enhances the protection effect.

The invention relates to the technical field of machining, and discloses an open thin-wall part machining method which comprises the specific steps that firstly, rough machining is conducted, specifically, a workpiece is clamped on a lathed three-jaw chuck, and a blank is machined into a cylindrical shape; step 2, primary aging: carrying out primary aging treatment on the part; thirdly, semi-finish turning is conducted, inner holes and outer circles are turned, annular grooves are turned in the inner holes and the outer circles correspondingly, the inner holes and the outer annular grooves are evenly spaced, each annular groove is spaced into a part, and a plurality of parts can be machined at the same time; 4, groove milling is conducted, specifically, grooves are symmetrically formed in the two side faces of the part subjected to semi-finish turning; 5, aging for the second time; and sixthly, finish turning is conducted. According to the machining method for the open thin-wall part, the inner hole and the outer circle in the semi-finish turning procedure are turned into the ring grooves respectively, only 1 mm of allowance is reserved on the single edge, each inner ring groove and each outer ring groove are one part and are evenly connected at intervals, and the problem that the thin-wall part is difficult to clamp is solved.

The flow-adjustable pipeline comprises an outer ring and an inner ring, the outer ring is hollow, a mounting groove is formed in the outer ring, and the inner ring is arranged in the mounting groove in a clearance fit mode; the outer ring comprises an outer adjusting ring, a connecting ring and a power ring, and the outer adjusting ring, the connecting ring and the power ring are rotationally connected in sequence; a first annular groove is formed between the outer adjusting ring and the connecting ring, the first annular groove is formed in the inner wall of the outer adjusting ring and the inner wall of the connecting ring, a second annular groove is formed between the power ring and the connecting ring, and the second annular groove is formed in the inner wall of the power ring and the inner wall of the connecting ring. The inner ring comprises an upper gear ring, a middle gear ring and a lower gear ring, a plurality of first blade adjusting gears are meshed between teeth of the upper gear ring and teeth of the middle gear ring, and a plurality of second blade adjusting gears are meshed between teeth of the lower gear ring and teeth of the middle gear ring. The device solves the problem of poor flow velocity controllability of the current pipeline.

The invention relates to a rigidity suppression and damping enhancement type squeeze film damper which comprises a damper outer ring, a damper inner ring and two sealing expansion rings located between the damper outer ring and the damper inner ring, an oil film is formed between the damper outer ring and the damper inner ring, an oil supply hole communicated to the oil film is formed in the damper outer ring, and the oil supply hole is communicated with the oil film. The sealing device is characterized in that an annular groove is formed in the outer circle of the damper inner ring, the sealing expansion rings are located in the annular groove, a plurality of bosses distributed in the circumferential direction are arranged between the sides, away from each other, of the two sealing expansion rings and the annular groove, and a plurality of leakage grooves distributed in the circumferential direction are formed in the sealing expansion rings. After the leakage channel is innovatively and additionally arranged on the first sealing face or the second sealing face, the amplitude of oil film force is obviously reduced, the mechanical vector of the oil film force is obviously deviated in the tangential direction, then the rigidity of the oil film is greatly reduced, the structural improvement effectively optimizes the dynamic performance of a system by changing the distribution characteristic of the oil film force, and the service life of the system is prolonged. And a good inhibition effect is achieved on the generation of steam cavitation.

The invention provides a hydrological underground water level exploration device which comprises a support, a rope wheel and a pipe wheel assembly, the pipe wheel assembly is installed in a support pipe area, a drainage assembly is installed in a functional area, the rope wheel assembly hoists a detector, the detector comprises an outer pipe and an inner pipe, a plurality of outer ring grooves are formed in the outer circumferential face of an outer pipe body, holes are formed in the bottoms of the grooves, and ring air bags are sleeved with the outer ring grooves. Outer holes are formed between the adjacent outer ring grooves, the inner pipe body is sleeved with the outer pipe body, the telescopic assembly drives the inner pipe body to move, a plurality of inner ring grooves are formed in the outer side wall of the inner pipe body, inner holes are formed between the adjacent inner ring grooves, inner diameter pipes are sleeved with the inner holes in a sealed mode, breathing holes are formed in the groove bottoms of the inner ring grooves, and annular closed cavities are formed between the inner ring grooves and the outer pipe body. And a sealing ring is fixed in the annular closed cavity. According to the scheme, independent sealing and accurate water pumping and monitoring of water layers of all depths can be ensured through expansion and contraction control of the annular air bag, and the deviation problem caused by the fact that the water level in the observation well is too high due to formation pressure of lower-layer water is effectively solved.

Tooling and methods for assembling a vane ring of a turbine engine are provided. A tool includes a base configured to receive an outer ring and vanes radially inwardly of the outer ring. A heater is operable to apply heat to the outer ring when the outer ring is received on the base. Expandable jaws having a plurality of radially actuatable pads are operable to urge the vanes radially outwardly toward the outer ring. A press is operable to apply an axial force against an inner support of the vane ring to install the inner support radially inwardly of the vanes.