1030 results about "Upper joint" patented technology

The invention provides a dual-control underground cable intelligent water distributor which comprises an upper connector, an upper shell, a connecting body, a lower shell and a lower connector which are connected in sequence, a central pipe is nested in the upper shell, the two ends of the central pipe are in sealed connection with the upper connector and the connecting body respectively, and an adjusting sleeve is nested in the lower shell. The two ends of the adjusting sleeve are sealed with the connecting body and the lower connector respectively, and the adjusting mechanism, the electric control mechanism and the driving mechanism are arranged in a gap between the upper shell and the center pipe respectively. The dual-control underground cabled intelligent water distributor has the beneficial effects that the dual-control underground cabled intelligent water distributor has two measurement and control processes which do not influence each other, the service life of a pipe column can be effectively prolonged, the dual-control underground cabled intelligent water distributor is suitable for an existing cabled intelligent process pipe column, the cable throwing and fishing measurement and control capability is increased on the basis of an existing cabled intelligent working barrel, and the service life of the cable is prolonged. Therefore, the purposes of two control modes of cabling and measuring and adjusting are achieved, and the requirements of multi-layer-section layered water injection, accurate injection allocation and real-time measuring and adjusting are met.

The invention relates to the technical field of water distributors, in particular to an anti-blocking water distributor for oil field exploitation. The problem that impurities in flowing liquid block a water distributor is solved. The invention relates to an anti-blocking water distributor for oil field exploitation, which comprises the following components: a housing which is provided with a plurality of liquid outlets; the upper joint is mounted on the shell in a threaded manner; the first sleeve is arranged in the shell in a sliding mode and provided with a plurality of liquid guide holes, and the liquid guide holes are formed in an inclined mode; the second sleeve is arranged in the shell in a sliding mode, and the two ends of the second sleeve make contact with the first sleeve and the upper connector respectively; the adjusting mechanism is arranged in the shell and used for adjusting the opening size of the liquid guide hole in the first sleeve through pressure. Liquid is guided to rotate through the liquid guide hole, the phenomenon that impurities in the liquid are attached to the position near the liquid outlet for a long time to cause blockage is reduced, and therefore it is ensured that the device continuously and effectively works.

The utility model discloses a spliced ​​height-adjustable distribution box, comprising a box body and an adjustment structure; the box body comprises an upper box body and a lower box body spliced ​​to each other, the lower part of the inner wall of the upper box body is provided with an inverted L-shaped upper splicing interface, and the upper part of the outer wall of the lower box body is provided with an L-shaped lower splicing interface adapted to the side wall of the upper splicing interface; the adjustment structure comprises an adjustment rod and a fixed block, the upper part of the adjustment rod is rotatably connected to the lower part of the outer wall of the upper box body through a mounting component, an adjustment opening is vertically penetrated on the fixed block, the adjustment rod is inserted into the adjustment opening and can move up and down relative to the adjustment opening, and a fixing assembly is provided on the fixed block. The utility model facilitates the adjustment of the size of the space formed by the upper box body and the lower box body, thereby the size of the space inside the box body can be flexibly adjusted according to the specifications of the electrical components or when other components need to be added, and the overall practicality is high.

The utility model relates to the field of machinery, and discloses a rotary tool for downhole operation, which comprises an upper joint, a protective outer cylinder is fixedly connected to the bottom of the upper joint, a spiral groove inner cylinder is sleeved in the protective outer cylinder, a plurality of spiral grooves are arranged on the outer wall of the spiral groove inner cylinder, a return spring is sleeved outside the spiral groove inner cylinder, and a plurality of spiral grooves are arranged on the spiral groove inner cylinder. The bottom end of the return spring is fixedly connected with a sliding connector, the bottom of the sliding connector is fixedly connected with a rotating inner cylinder, and the bottom of the rotating inner cylinder is fixedly connected with a lower connector. In the utility model, the rotation function is realized under the condition of no hydraulic power, the damage of external liquid to a coal reservoir is avoided, the rotation function can be realized only by moving up and down, the operation is simple and convenient, the risk that a pipe string is blocked in horizontal well sand fishing is reduced, the device is directly connected with a pen point, the distance is short, and the formed rotation torque acts on the sand surface, so that the operation is simple and convenient. And the passing capacity and efficiency of the bailing pipe string are improved.

The utility model discloses a tool for preventing a tubular column from falling into a well, which comprises an upper joint, a connecting rod is fixedly arranged on one side of the surface of the upper joint, a slip bowl is movably sleeved on the outer side surface of the connecting rod, a plurality of slips are uniformly and fixedly arranged on the outer side surface of the slip bowl, and an anti-abrasion sleeve is arranged between the outer side surface of the connecting rod and the slip bowl. A reset spring is arranged on the outer side of the anti-abrasion sleeve on the surface of the connecting rod in a sleeving mode, a cap is fixedly arranged on the outer side surface of the slip bowl, a middle connector is fixedly arranged at the end, away from the upper connector, of the connecting rod, an outer cylinder is fixedly arranged on the side, away from the connecting rod, of the middle connector, and a counterweight steel block is movably arranged in the outer cylinder in a clamped mode. And a transmission rod is fixedly arranged on the surface of one side, close to the cap, of the counterweight steel block. Once weightlessness occurs, the device can be automatically clamped in a well, in this way, automatic emergency braking can be achieved, and a pipe column is prevented from falling into a highly-deviated well section or a highly-deviated horizontal section.

The invention discloses a compression type packer capable of being repeatedly set, and belongs to the technical field of oil production engineering equipment. A rubber barrel shaft is arranged on the outer circumference of a center pipe, a rubber barrel is arranged on the outer circumference of the rubber barrel shaft, a first sealing ring is arranged at one end of an upper pressing ring, an upper connector is arranged at the other end of the first sealing ring, a cylinder sleeve is arranged at the other end of the rubber barrel shaft, and an anti-resistance nail is arranged on the cylinder sleeve; and a plurality of setting valve core mechanisms and unsetting valve core mechanisms are arranged on the outer circumference of the second sealing ring on the outer circumference of the central pipe. The setting compression type packer is pressed to extrude the first medium container in the packer, hydraulic oil in the first medium container flows into the second medium container through the upper one-way constant-pressure valve element, the hydraulic oil in the second medium container is increased, the pressure is increased, and the internal hydraulic pressure is reduced by increasing the size of the second medium container; the second medium container extrudes the rubber barrel through the central pipe, the rubber barrel expands, the outer diameter is increased, a pipeline is packed, setting and unsetting of the compression type packer are achieved, and the actual production requirement is met.

The invention relates to the field of metal hose performance detection, in particular to a metal hose swing test device. A fixing assembly; the power swinging assembly is connected with the first fixing seat and used for enabling the first fixing seat to move relative to the fixing assembly; one end of the test hose is detachably mounted on the plane of the first fixing seat, and the other end of the test hose is detachably mounted on the plane of the fixing assembly; the axes of the two ends of the test hose do not coincide, so that the test hose is located between the first fixing base and the fixing assembly in a bent state. As the two ends of the test hose are detachably mounted on the first fixing seat and the fixing assembly which can move and be adjusted relatively respectively, and an adjustable relative relation exists between the first fixing seat and the fixing assembly, the mounting positions of the upper joint and the lower joint of the metal hose can be adjusted very conveniently in the actual test process, and the test efficiency is improved. And important parameters such as the joint relative to the swinging center position.

The utility model provides a coiled tubing bottom packer and a coiled tubing dragging fracturing process pipe column with a bottom seal, the coiled tubing bottom packer comprises a core shaft, an anti-jacking anchoring mechanism, a rubber sleeve and a seat clamping tile, the left end of the core shaft is connected with an upper joint, and a packing sealing assembly is installed at the right end of the core shaft; the anti-jacking anchor fluke mechanism comprises an anchor fluke base and an anchor fluke, the anchor fluke is installed in the anchor fluke base, an inner hole is formed in the left end of the anchor fluke base in the axial direction, and the packing sealing mechanism can be fixed in the inner hole; the rubber sleeve is installed on the anchor fluke base, the rubber sleeve has a certain elastic deformation performance and can expand and contract, a cone is arranged on the right side of the rubber sleeve, and a seating slip is arranged on the right side of the cone. The coiled tubing dragging fracturing process pipe column with the bottom seal comprises the coiled tubing bottom packer. According to the coiled tubing bottom packer, coiled tubing bottom seal dragging fracturing construction can be continuously carried out under a high pump stopping pressure block.

The invention discloses a multistage self-locking type ball catching circulating short section for half-way well cementation and a control method, and relates to the technical field of oil well cementation operation, the multistage self-locking type ball catching circulating short section comprises a short section assembly, the short section assembly comprises an outer shell, a discharge port is formed in the top of the outer shell, a displacement assembly is arranged in the outer shell, and the short section assembly comprises a sliding sleeve connected into the outer shell in a sliding mode; a containing groove is formed in the outer ring of the sliding sleeve, a first ball is slidably connected into the containing groove, an upper connector is fixed to one end of the outer shell, and a lower connector is fixed to the other end of the outer shell. The non-return structure has the beneficial effects that through the arrangement of the short section assembly and the limiting assembly, after the second ball body is put in, the displacement assembly can be driven to slide and displace in cooperation with continuously-fed media and pumping pressure, non-return locking operation is completed, the second ball body is prevented from being disengaged at will, the bypass requirement is well met, and compared with a traditional spring and rubber part non-return structure, the non-return structure is simple in structure and convenient to use. The stability is better, and the well cementation operation is well carried out.

The invention discloses a high-temperature-resistant and high-pressure-resistant autonomous deep well pressure maintaining sampler, and belongs to the technical field of drilling engineering sampling. The sampler comprises an upper joint, a control outer pipe, an end cover, a valve body and a liquid storage chamber which are connected in sequence, an electromagnet is arranged on the outer side of the end cover; an electric control module is arranged in the control outer pipe; a valve element with a permanent magnet is arranged in the valve body in a sliding mode, the valve element is driven to move axially through non-contact electromagnetic force between the electromagnet and the permanent magnet, and opening and closing of the sampling flow channel are achieved. The bottom of the valve core is provided with a valve core inner channel communicated with the sampling flow channel and the liquid storage chamber and a one-way valve; a sampling inlet channel is formed in the joint of the end cover and the valve body. According to the invention, a pure mechanical sealing-based structure is adopted, so that the sealing reliability and the operation stability in a high-temperature and high-pressure environment of a deep well are remarkably improved, drilling fluid is not needed, and efficient and pressure-maintaining sampling of in-situ formation fluid is realized.

The invention discloses an oil exploitation packer with an expanding type sealing structure, which belongs to the field of oil field downhole tools and comprises a central tube, an upper joint and a lower joint are respectively arranged at two ends of the central tube, a sealing component and a setting component are sequentially sleeved between the upper joint and the lower joint, and the upper joint and the lower joint are connected with a centralizing component and a reversing component in a matched manner. The sealing assembly comprises an installation pipe sleeved on the central pipe and a rubber sleeve sleeved on the outer side of the installation pipe, a first sliding rod and a second sliding rod which are alternately distributed and linked are arranged on the installation pipe in a sliding mode, and a first pushing block and a second pushing block are respectively hinged on the two sliding rods. When the two sliding rods move towards the setting assembly, the first pushing block and the second pushing block alternately penetrate and are spliced into a sealing ring with the outer diameter larger than the inner diameter of the rubber sleeve. The installation pipe provides a stable installation foundation for all the components, sliding rod linkage ensures that the pushing blocks move coordinately and synchronously, the sealing ring extrudes the rubber barrel to enable the rubber barrel to be expanded to be attached to the well wall to achieve sealing, and formation fluid channeling is effectively prevented. And by adjusting the radian of the push block and the length of the push rod, rapid sealing can be achieved under short-distance movement, and sealing reliability and response efficiency are improved.

The invention relates to the technical field of oil and gas well fracturing wellhead equipment, in particular to a fracturing wellhead quick connecting device and a using method thereof.The fracturing wellhead quick connecting device comprises an upper connector, an adapter, a base and an oil extraction wellhead, an inner mounting seat is arranged in the adapter, an inner threaded sleeve is rotatably mounted on the adapter, and a plug is arranged at an opening in the upper end of the base; a butterfly valve plate is arranged at an opening in the lower end of the base, an isolation base is fixedly arranged in the base, a stand column is fixedly connected to the lower end of the plug, the lower end of the stand column extends into the isolation base and is fixedly connected with a limiting disc, a reset spring is fixedly arranged at the lower end of the limiting disc, and pushing assemblies are arranged at the front end and the rear end of the limiting disc. A plurality of groups of first driven strips, second driven strips and third driven strips are arranged in the base; according to the device, the pipeline joint can be quickly connected with the wellhead, so that the shutdown time caused by repairing problems is shortened; the invention further provides a using method of the quick connecting device for the fractured wellhead. By means of the method, the assembling efficiency is improved.

The utility model belongs to the technical field of parallel robots, and discloses a parallel robot which comprises a base and a platform, six joint groups are uniformly and annularly arranged on the opposite surfaces of the base and the platform in an array mode, the six joint groups are three lower joint groups and three upper joint groups respectively, and the upper joint groups and the lower joint groups are arranged in a staggered mode. Six linear motors are connected between the three lower joint groups and the three upper joint groups; the linear motor is adopted to directly drive the mechanical arm, traditional indirect linear motion is abandoned, transmission media are reduced, and therefore the precision, the response speed, the working efficiency and the size of the parallel robot are improved, and the parallel robot is more suitable for high-precision, high-speed, high-efficiency and miniaturized working scenes.

The invention discloses a production sliding sleeve, a production tubular column and a production method for a high-temperature gas well of an offshore oilfield. The technical problems that opening and closing control of the production sliding sleeve is tedious, and the adaptability of the production tubular column is poor are solved. The production sliding sleeve comprises a sliding sleeve body of a cylinder structure; the upper joint is arranged at the top of the sliding sleeve main body; the production hole is formed in the sliding sleeve main body; the control cylinder is arranged in the sliding sleeve main body in a sliding manner; the opening hole is formed in the control cylinder; the opening part is used for controlling the sliding sleeve main body to move downwards and enabling the opening hole to be aligned with the production hole; and the closing part is used for controlling the sliding sleeve main body to move upwards and enabling the opening hole and the production hole to be staggered. The structure of the produced sliding sleeve is optimized, rapid and convenient opening and closing control of the produced sliding sleeve is achieved, limitation of well types and well deviation is avoided, the use adaptability is improved, the production method is simpler, and the operation convenience and the operation time efficiency can be improved.

The utility model discloses a whipstock system. The whipstock system comprises a feeding and releasing module and a whipstock, the feeding and releasing module comprises an upper connector, a connecting rod and a supporting sleeve which are connected in sequence, and one side of the supporting sleeve of the feeding and releasing module is inserted into the hollow whipstock; the feeding and releasing module is of a hollow tubular structure; the interior of the upper connector is in threaded connection with one end of the connecting rod, and the other end of the connecting rod is inserted into the whipstock after being connected with the supporting sleeve through a shear pin. A positioning groove is formed in the inclined surface of the whipstock; a boss is arranged at the position, corresponding to the positioning groove, of the upper joint; and the positioning groove is embedded with the boss and is used for driving the whipstock to rotate together when the upper joint rotates. According to the utility model, a main borehole production channel can be reserved while the whipstock is arranged, and the whipstock is simple in structure, convenient to operate and high in reliability.

The invention provides an upper node of a spherical connecting rod. The spherical connecting rod upper node comprises a core shaft and a rubber body wrapping the core shaft, a circle of protrusions with hemispherical sections are arranged on the middle section of the core shaft in the circumferential direction, the protrusions are glued to the inner side of the rubber body, and the outer side of the rubber body is of a cylindrical structure. According to the spherical connecting rod upper joint, the problems that an existing rubber joint is high in deflection rigidity, common in deflection fatigue performance, difficult to meet use requirements and the like are solved.

The invention aims at the technical field of oil drainage devices, and particularly discloses an anti-blocking oil drainage device for an oil field. Comprising an oil discharge pipe and a sliding sleeve, the oil discharge pipe is provided with an oil discharge port, the inner side of the oil discharge pipe is provided with a threaded groove, the outer side of the sliding sleeve is provided with an external thread, the external thread of the sliding sleeve slides in the threaded groove of the oil discharge pipe, the sliding sleeve is provided with a first through hole for installing a filter screen, and when the sliding sleeve moves, the filter screen is arranged in the first through hole. The oil discharging pipe is provided with a first threaded cover, the first threaded cover and the sliding sleeve slide in a sealed mode, the end, away from the oil discharging pipe, of the sliding sleeve is provided with an upper connector, the end, away from the first threaded cover, of the oil discharging pipe is provided with a casing pipe, and the casing pipe is connected with the upper connector. And a fixing ring is fixedly connected in the sleeve. Through shielding of the fixing ring, the situation that wax components separated out from crude oil block the first through hole, and normal operation of oil discharging operation is affected is avoided.

The utility model relates to the technical field of bleeding pipeline positioning, aims to solve the problem that the size of a clamping sleeve pipeline does not meet the assembly requirement due to the fact that deviation exists when all pipelines are manually positioned in the prior art, and provides a bleeding pipeline positioning clamp tool of hydrogen energy filling equipment. At least two positioning blocks are mounted on the reference platform, and the positions of the positioning blocks correspond to the position of a safety valve on the hydrogen energy filling equipment; one end of the positioning block is connected with an adapter, the adapter comprises a lower joint, an upper joint and a middle connecting piece, one end of the lower joint is fixedly connected with the positioning block, the other end of the lower joint is detachably connected to the middle connecting piece, one end of the upper joint is detachably connected to the middle connecting piece, and the other end of the upper joint is detachably connected to the middle connecting piece. The other end of the upper connector is used for being fixedly connected with a pipeline. By means of the clamp tool, the positioning accuracy of the pipeline is high, errors are small, and it is guaranteed that the size of the clamping sleeve pipeline meets the assembly requirement.

The invention discloses a full-bore soluble blanking plug, which relates to the technical field of under-pressure operation in the petroleum industry, and comprises an upper joint and a lower joint which are in threaded connection, a soluble inner core and a soluble outer sleeve, the soluble inner core is arranged in the soluble outer sleeve, and the outer part of the soluble outer sleeve is tightly connected with the inner side of the upper joint; a step limiting structure used for limiting movement of the soluble inner core is arranged in the soluble outer sleeve, the soluble inner core in the upper connector and the end side, close to the lower connector, of the soluble outer sleeve are wrapped with anti-soluble interlayers, the outer diameter of the soluble outer sleeve is not smaller than the inner diameter of a tubular column, the reverse pressure difference of the soluble blanking plug can reach 70 MPa, the requirement for the pressure of a construction well can be met, and the structure is simple. Meanwhile, after the soluble plug of the soluble blanking plug is dissolved, the full bore of a pipeline can be realized, the later operations of plugging a bridge plug by a steel wire or a cable and the like are not influenced, the soluble blanking plug can be connected to the lowermost part of a pipe column and also can be used for connecting the pipe column, and the problem of poor universality of an existing blanking plug is solved.

The invention relates to the technical field of oil gas well oil pipe transmission perforation, in particular to a perforation bidirectional shock absorber based on an energy absorption material and a shock absorption effect evaluation method.The bidirectional shock absorber comprises two energy absorption material elements which are connected to the two ends of a shock absorption spring in series respectively; the other end of one energy absorption material element abuts against the end of the upper connector through an upper limiting gasket, and the other end of the other energy absorption material element abuts against the end of a structure formed by connecting the plug and the sliding shaft through a lower limiting gasket. By means of the bidirectional shock absorber and the shock absorption effect evaluation method, the problems that the absorption effect of low-frequency impact shock waves generated during perforation is poor and the axial bidirectional shock absorption effect is poor can be effectively solved.

The invention relates to an automatic flushing screen pipe, and belongs to the technical field of oil well oil pumping equipment. The device comprises an upper connector which is in threaded connection with an oil well pump, the upper portion of a center pipe is sleeved with a supporting base, and a supporting block and a third spring are installed in a groove of the supporting base; the lower portion of the center pipe is sleeved with the screen pipe, and a liquid inlet valve hole and a liquid outlet valve hole are formed in the middle of the center pipe and provided with a liquid inlet check valve set and a liquid outlet check valve set respectively. And the lower end of the flushing pipe penetrates through the locking ring to be fixed. And a piston chamber is formed among the central pipe, the supporting seat, the outer protective pipe and the valve ring. The piston chambers are alternately expanded and compressed by utilizing the relative movement of the central pipe and the supporting seat during the up-down stroke of the oil well pump, gas and liquid are driven to wash the screen pipe through the washing holes, and meanwhile the screen pipe is driven to rotate. The screen pipe can be effectively prevented from being blocked, the service life of the screen pipe is prolonged, and the oil well yield is improved.

The invention relates to the technical field of oil exploitation, in particular to a small casing gravel packing sand prevention tool and a using method. According to the technical scheme, liquid through holes are distributed in the outer wall of an outer pipe, a winding wire is wound on the outer wall, one or more supporting ribs are arranged between the winding wire and the outer wall of the outer pipe, and the lower end of the outer pipe is connected with a screen pipe through a lower connector; a cylinder sleeve is mounted at the upper end of the inner pipe, the upper end of the cylinder sleeve is connected with an upper joint, and the lower end of the inner pipe is connected with a washing pipe through an inner lower joint; a plurality of well washing holes are formed in the upper portion of the inner pipe, a piston and a spring are arranged between the cylinder sleeve and the outside of the well washing holes of the inner pipe, and a plurality of circulating well washing holes are formed in the cylinder sleeve. The outer wall of the upper connector is connected with the inner wall of the upper portion of the outer pipe through a locking block and a shear pin. The filling sand prevention device has the advantages that filling sand prevention of a large-displacement and high-sand-ratio stratum with the small inner diameter of a sleeve and the limited internal space of a filling tool can be achieved, filling is conducted through an oil sleeve annulus, the circulation area is larger, and in addition, the filling sand prevention device is simpler in structure and safer and more convenient to construct.

The invention provides an anchoring packer for a multilateral well and multilateral well drilling equipment. The anchoring packer comprises a mandrel assembly, an anchoring mechanism and a rubber sleeve sealing mechanism. The mandrel assembly comprises an upper connector with a pressure transmission hole and a mandrel forming a first pressure cavity with the upper connector. The anchoring mechanism comprises an upper slip arranged on the mandrel in a sleeving mode, a conical sleeve and a first piston assembly, the conical sleeve is in sliding connection with the upper slip through an inclined face, and the conical sleeve and the mandrel are limited through a first shear pin. The rubber sleeve sealing mechanism is arranged below the anchoring mechanism and comprises a second piston assembly, a rubber sleeve and an extrusion sleeve, and the overlapping position of the second piston assembly and the first piston assembly is connected through a second shear pin. The mandrel is provided with a hydraulic channel communicated with the first pressure cavity and the second pressure cavity. During operation, hydraulic oil enters through the pressure transmission hole to drive the first piston assembly to move upwards to cut off the first shear pin, and the conical sleeve is pushed to enable the upper slip to anchor the well wall in the radial direction; meanwhile, the second piston assembly is driven to move downwards to cut off the second shear pin, and the rubber sleeve is extruded to radially expand to achieve sealing.

The invention relates to the technical field of hydraulic control bypass tools while drilling, in particular to a hydraulic control bypass circulating valve while drilling and a bypass circulating method.The hydraulic control bypass circulating valve while drilling comprises an upper connector, a body, a reset piece, a hydraulic control sliding sleeve, a guide screw and a lower connector, the body is in threaded connection between the upper connector and the lower connector, and the reset piece and the hydraulic control sliding sleeve are sequentially arranged on the inner side of the body from top to bottom; a boss is integrally arranged on the outer side of the lower end of the hydraulic control sliding sleeve. The hydraulic control sliding sleeve is reasonable and compact in structure and convenient to use, the hydraulic control sliding sleeve is adopted, the sliding sleeve can be hydraulically controlled to move, ball throwing is not needed, a tool is activated or closed through circulating displacement, and therefore the hydraulic control sliding sleeve is not limited by activation times, a ball basket is not needed, the effective length connected into a drill column can be shortened, convenience is brought to bottom drilling tool combination design, wellhead installation and transportation, and the working efficiency is improved. The hydraulic control sliding sleeve upper and lower end face pressure difference control tool can directly build pressure to activate the tool to build a circulation channel when a drill bit water hole is blocked or an annulus below the tool collapses, and convenience is provided for complex accident treatment or drilling.

The invention relates to the technical field of water distributors, in particular to an underground water distributor for oil exploitation, which comprises a main pipeline, two ends of the main pipeline are fixedly connected with an upper joint and a lower joint respectively, the main pipeline is slidably connected with an opening valve, a return spring is arranged between the opening valve and the upper joint, the opening valve is in contact with the lower joint, and the main pipeline is provided with a water distribution core. A first sliding block is connected to the water nozzle in a sliding mode, valve plates are arranged on the two sides of the water nozzle, the first sliding block can slide along with changes of pressure and drive the valve plates on the two sides to move, the opening size of the water nozzle can be controlled through movement of the valve plates, and therefore the water nozzle can be conveniently adjusted; when the size of the water nozzle on a certain layer is actively adjusted, the sizes of the water nozzles on other layers can be automatically adjusted according to the water flow pressure change, so that the water nozzles on other layers are prevented from being respectively tested and adjusted when the water nozzles of the water distributor on a certain layer are adjusted, and the working efficiency is improved.

The invention relates to the technical field of cranes, and discloses a manufacturing process method of a flexible leg of a gantry crane, which comprises the following steps of: manufacturing an upper joint of the flexible leg: assembling and welding a small group in advance, assembling and welding a top plate small group, assembling and welding a barrel body, assembling a peripheral component and assembling a flange component; manufacturing a flange section cylinder body, manufacturing a middle section cylinder body group, and manufacturing a single supporting rod; manufacturing a lower cross beam of the flexible leg: manufacturing small components, manufacturing plane sections, manufacturing box-shaped sections, welding the box-shaped sections, assembling and welding lug plate components, and assembling and welding components with round top and square bottom; and folding in a factory. According to the process, through segmented machining and small-segment manufacturing, the precision of the whole device is improved, meanwhile, the period on a jig frame is shortened, the installation efficiency is high, and the precision is high.

The utility model discloses a packer rubber sleeve protection device, which comprises a packer body, the packer body comprises an upper joint, a lower joint, an upper rubber sleeve seat, a lower rubber sleeve seat, a central pipe and a rubber sleeve, the upper joint is arranged at the upper end of the central pipe, the upper rubber sleeve seat is sleeved at the position of the upper joint close to the lower end, and the lower rubber sleeve seat is sleeved at the lower end of the central pipe. The lower end of the central pipe is provided with a lower connector, the position, close to the upper end, of the lower connector is sleeved with a lower rubber barrel base, a rubber barrel is arranged between the upper rubber barrel base and the lower rubber barrel base, a protection barrel is arranged in the lower rubber barrel base, the lower end of the rubber barrel is provided with a silica gel cavity and a limiting barrel, and a piston column is arranged in the silica gel cavity. Limiting grooves are formed in the left side and the right side of the limiting cylinder, a telescopic cavity is formed in the upper end of the lower connector, a spring and a shaft rod are arranged in the telescopic cavity, a top plate is arranged at the upper end of the shaft rod, connecting rods are fixedly connected to the left side and the right side of the outer side surface of the shaft rod, and the connecting rods are fixedly connected with the protection cylinder.

A liquid-cooling heat dissipation structure having a nonlinear fin array. The liquid-cooling heat dissipation structure includes an upper plate, a lower plate, and a flow guide member. The upper plate has an accommodating groove of which an inner side has an upper joint area formed thereon. The lower plate has a lower joint area. The flow guide member disposed between the upper plate and the lower plate includes a heat dissipation plate body having a first surface and a second surface, and a plurality of heat dissipation columns integrally disposed on the second surface. The upper brazing area is connected to the lower brazing area, and two ends of the flow guide member are respectively connected to the upper joint area and the lower joint area to form an enclosed cavity for accommodating the heat dissipation columns.

The invention discloses a self-setting packer and belongs to the technical field of petrochemical engineering. The device comprises an upper connector and a lower connector, a lifting sleeve is installed in an inner hole of the upper connector, and the lower end of the upper connector is connected with an upper pressing ring through a deblocking shear pin; a rubber cylinder shaft is fixedly mounted on the outer side of the lifting sleeve, and a balance piston, a sealing sleeve, an upper pressing ring, a rubber cylinder and a sealing push cylinder are sequentially arranged on the rubber cylinder shaft in a sleeving manner from inside to outside; the lower end of the rubber sleeve shaft is connected with a central pipe through a locking sleeve; the lower end of the central pipe is in threaded connection with a lower joint; the sealing push cylinder sleeves the outer side of the central pipe, and the inner wall of the upper part of the sealing push cylinder is in sealing fit with the outer wall of the locking sleeve to form a primary vacuum piston cavity; the lower end of the sealing push cylinder is in threaded connection with a lower-stage piston, and a starting piston is installed on the outer side of the lower-stage piston in a limited mode through a shoulder. The packer can directly seat a well mouth after descending into a well in place along with a tubular column, pressing is not needed, the tubular column does not need to be lifted and put down, and automatic setting of the packer is achieved through timing liquid inlet and liquid column static pressure.

The utility model relates to the field of oil field well repair, in particular to a split type strong magnetic fisher. Comprising an upper connector and a mounting seat, a coupling is arranged at the first end of the upper connector, and a screw thread is arranged in the coupling and used for being connected with an upper pipe column; the second end of the upper joint is a male buckle; the first end of the mounting base is provided with a female buckle used for being detachably connected with the male buckle, and the second end of the mounting base is provided with a mounting groove used for mounting the strong magnet. At present, a strong magnetic fishing tool used on site adopts an integrated design, that is, a magnet and an outer cylinder are fixed together, cannot be detached and have no inverse well-flushing channel, and after the strong magnetic fishing tool is stored for a period of time or used for multiple times, the strong magnet is demagnetized, the adsorption effect is greatly reduced, the fishing success rate is greatly reduced, and the fishing efficiency is greatly improved due to the influence of time or the temperature of an oil-water well. If a strong magnet is replaced, the whole strong magnetic fisher needs to be replaced, the production cost is high, and therefore a split type strong magnetic fisher is needed.