133 results about "Petroleum engineering" patented technology

The invention discloses a hydraulic system of a single-cylinder pin type telescopic arm. The hydraulic system comprises an arm pin cylinder, a cylinder pin cylinder and a control oil path, wherein a system pressure oil path can provide oil for the arm pin cylinder or the cylinder pin cylinder through the control oil path; an oil supply branch of the control oil path comprises an energy accumulator and an unloading valve; the unloading valve is positioned at an upstream position of the energy accumulator, has two working stations and is configured to communicate with the oil supply branch when being positioned at the first working station and communicate with the system pressure oil path and a system oil return path when being positioned at the second working station. When the control oil path provides oil for the arm pin cylinder or the cylinder pin cylinder to unlock the cylinder and keep the cylinder in an unlocked state, the unloading valve is positioned at the second working station to communicate with the system pressure oil path and the system oil return path; the pressure of the control oil path is maintained by the energy accumulator, so that the arm pin or the cylinder pin is kept in the unlocked state; the hydraulic system guarantees that no overflow loss exists when the arm pin or the cylinder pin is kept in the unlocked state. The invention also provides a control method of the single-cylinder pin type telescopic arm. In addition, the invention also discloses a crane with the hydraulic system.

The invention provides an adaptive variable compression engine piston, relating to an engine piston. The invention is characterized in that the piston is composed of a gas mixture combustion pressure control piston lifting system, an oil filling system and a cooling system, wherein the gas mixture combustion pressure control piston lifting system comprises an upper oil chamber (4) consisting of apiston shell (1) and an upper oil pressure piston (2) and a lower oil chamber (28) consisting of the piston shell (1) and a lower oil pressure piston (17); the oil filling system comprises a connecting rod internal oil duct (22), a connecting rod small end oil groove (21), a piston pin internal oil duct (25), a piston lower support internal oil groove (27) and an oil filling check valve (16); thecooling system comprises the connecting rod internal oil duct (22), the connecting rod small end oil groove (21) which is communicated with the piston pin internal oil duct (25) and a cooling oil spray hole (24), and a cooling oil duct (8). The piston can be automatically adapted to the compression ratios of the engine under different working conditions and can greatly enhance gas mixture combustion efficiency and torque under medium and low loads.

The invention relates to a telescopic control valve, a multi-stage telescopic hydraulic system and a hoist jib telescopic hydraulic control system. The telescopic control valve comprises a valve body, wherein a first oil port and at least two second oil ports are formed in the valve body, oil passing ways are connected between the first oil port and the at least two second oil ports, on-off valves are arranged on all the oil passing ways, a control oil port of each on-off valve is connected with a control oil source by the aid of a reversing valve, selection of all the on-off valves can be realized through reversing by the reversing valves, and then the oil passing ways are connected or disconnected. The telescopic control valve is provided with the first oil port, the second oil ports, the reversing valves and the on-off valves, and the different oil passing ways can be connected or disconnected through reversing by the reversing valves. For a multi-stage telescopic hydraulic system, a cylinder rod corresponding to one selected oil way can be controlled to extend or retract, and other oil ways are cut off, so that action of the cylinder rod cannot be affected, and independent control on each stage of cylinder barrel is realized.

The invention discloses a planetary drill bit assembly for balancing the reactive torque of drilling equipment in well drilling and relates to the technical field of drill bits and drilling equipment for oil drilling. The planetary drill bit assembly comprises a planetary structure, a pressure compensating device, and inner and outer drill bits. One end of a drive shaft is connected with an internal drill bit assembly; the middle part of the drive shaft is sleeved with a drive shell; an external drill bit assembly is fixedly arranged outside the drive shell; and a planet bracket tray, a planet bracket and a plurality of planet gears are positioned between the drive shell and the drive shaft. In the invention, the external and internal drill bits are driven by the same drive mechanism to rotate simultaneously and the rotation speed of the external drill bit varies automatically with the change of the drilling speed, so the drill bit can adapt to and eliminate or balance the reactive torque generated by the different drilling speeds in real time. And thus, and the stability and directional control capability of the drill bit are further increased.

The invention relates to deep-sea mining operation equipment, and specifically relates to a submarine mining vehicle walking chassis and self-rescue method thereof. one ends of front and rear telescoping racks are respectively in telescoping connection with the front and rear sides of a body; push-and-pull oil cylinders are installed on the front and rear sides of the body; piston rods of the twopush-and-pull oil cylinders are connected to the front and rear telescoping racks; the front and rear telescoping racks can stretch out and draw back through the driving of the push-and-pull oil cylinders; the other ends of the front and rear telescoping racks are connected to stepping oil cylinders; piston rods of the stepping oil cylinders are connected to supporting sliding shoes which can accomplish the support stepping when the slipping or difficult travelling of a track system occurs; and the elevating of the supporting sliding shoes can be realized through the driving of the stepping oil cylinders. Through the combination of track travelling and support stepping, the walking chassis can adapt various complex terrains on the deep seabed, perform timely self-rescue when the slipping or difficult travelling of tracks occurs, and successfully accomplish deep seabed mining missions.

The invention belongs to a truss support structure in the technical field of remote space sensing and aims to solve the technical problem of providing the ring-shaped carbon fiber truss support structure of the coaxial three-reflector spatial optical system. In the technical scheme, the ring-shaped carbon fiber truss support structure comprises an upper carbon fiber support ring, a lower carbon fiber support ring, a first carbon fiber support rod, a second carbon fiber support rod, a third carbon fiber support rod, a fourth carbon fiber support rod, a fifth carbon fiber support rod, a sixth carbon fiber support rod, a first carbon fiber support rod coupling component, a second carbon fiber support rod coupling component, a third carbon fiber support rod coupling component, a fourth carbonfiber support rod coupling component, a fifth carbon fiber support rod coupling component, a sixth carbon fiber support rod coupling component, a first embedded component, a second embedded component, a third embedded component, a fourth embedded component, a fifth embedded component and a sixth embedded component. The upper end and the lower end of the structure are respectively provided with the upper carbon fiber support ring and the lower carbon fiber support ring which adopt the same specifications and are embedded coaxially in a 120-degree angle; the carbon fiber support rods adopt a hollow cylindrical rod structure, and the carbon fiber support rod coupling components are provided with double flange interface structures arranged in a 60-degree angle; and the hollow cylindrical inner holes of two carbon fiber support rods are respectively sleeved on two flange interfaces of the carbon fiber support rod coupling components and are fixedly glued to form the closed ring-shaped carbon fiber truss support structure. The structure has a light weight, high stiffness, high strength and high positioning accuracy.

The invention relates to a power transmission system and application thereof, in particular to a gas-liquid kinetic energy driven system and an oil pumping unit applying the same. The power driven system comprises a gas-liquid accumulator, an execution plunger cylinder, a plurality of reversing valves and a pressure pump, which form a driving oil way and an oil return way, and a closed loop consists of the driving oil way and the oil return way. The oil pumping unit adopts the driven system to drive an oil pumping rod to vertically move and can be folded. The power driven system saves energy resources and has high efficiency and good effects of low carbon and emission reduction, and the oil pumping unit has a simple structure, a small size, less easily-damaged mechanical parts and long service life. By the power driven system and the oil pumping unit, the technical problems that the power system in the prior art requires large motive power and has poor energy-saving effect, and the oil pumping unit is easily fatigue and damaged and has multiple faults are solved.

The invention relates to a method for recovering oil gas and a device. A combined technology that frozen brine is directly condensed-adsorbed/desorbed to regenerate is adopted to recover the oil gas; and in a direct condensation part, low-temperature brine and collected oil gas are adopted to be directly mixed with oil gas at the condensation part. The method and the device, provided by the invention, have the characteristics of large operating flexibility, low energy consumption, small investment, no potential safety hazard, reach ability in tail gas emission standards, and the like, and can be applicable to the loading/unloading of oil products for vehicles and ships and the oil gas recovery in circumstances, such as oil tank breathing, and the like.

The invention discloses a drill bit of a hollow drill. The drill bit comprises a drill handle and a barrel, and is characterized in that the top end of the barrel is provided with a wear-resistant layer; a plurality of cutting teeth are uniformly distributed on the wear-resistant layer; the wear-resistant layer is formed by overlaying a JY49-1 material at one time; the cutting teeth are directly welded on the wear-resistant layer. The drill bit has the advantages of corrosion resistance, easiness in cleaning, firmness, prevention of deformation and durability.

The invention belongs to the technical field of gauges, and particularly relates to a cylindrical part bending angle measuring and horizontal and vertical surface drilling jig, which comprises a fixed base, a movable base, a center shaft, slide blocks, studs, press plates, butterfly nuts, linear slide rails, vertical drilling brackets, horizontal drilling brackets, vertical drilling die plates, drilling die press plates, horizontal drilling die plates, vertical quick-change drill sleeves and horizontal quick-change drill sleeves, wherein the fixed base and the movable base are respectively provided with the linear slide rails, two rows of grooves and two rows of convex rails in the length direction, the connecting end of the movable base and the fixed base is provided with an angle dial, the bending angle can be conveniently measured through the angle dial on the bases, the axial position of a cylindrical workpiece can be precisely positioned through the horizontal drilling brackets and the vertical drilling brackets, and the vertical surface and horizontal surface of the bent workpiece can be precisely drilled by the vertical drilling die plates and the horizontal drilling die plates. The jig has the advantages that the operation is easy and convenient, the use range is wide, the cost is low, and the processing precision is high.

The invention discloses a hydraulic oil filtration system and a hydraulic shovel. The hydraulic oil filtration system comprises a pilot control system and a bypass filtration oil way, wherein the pilot control system is used for guiding and controlling a hydraulic working device (200), the bypass filtration oil way is provided with a bypass filter (3), a pilot pump (1) is placed inside the pilot control system, an oil suction of the pilot pump (1) is connected with a hydraulic oil tank (100), one end of the bypass filtration oil way is connected with the hydraulic oil tank (100), and the other end of bypass oil way is connected on a pilot control oil way between the pilot pump (1) and the hydraulic working device (200). Due to the fact that the bypass filtration oil way is provided with the bypass filter and is connected on the pilot control oil way and the hydraulic oil tank, high-precision and high-efficiency filtration is carried out on hydraulic oil by utilizing of a flow rate and oil pressure of the hydraulic oil on the pilot control oil way, working efficiency is improved, and the structure is simple and stable.

The invention relates to a screw bolt with isothermal oil for cooling the inner wall of the front section of an EPE/EPS single screw bolt foaming extruding machine, which belongs to the field of single screw bolt foaming extruding machines taking LDPE/GPPS as main raw materials according to the principle of physical foaming by injecting foaming agent to produce EPE/EPS sheets. The invention solves the technical problem that the prior EPE/EPS single screw bolt foaming extruding machine can not cool material sectionally, thereby influencing the quality of products. The invention adopts the technical scheme that the centers of the front section and the rear section of the screw bolt are provided with different oil returning channels; cooling oil is pumped into the bottom end of a central blind hole in the front section of the screw bolt after passing through a small oil inlet pipe to return through the inner wall of the central blind hole in the front section of the screw bolt and enters a passage between a small oil inlet pipe and a large return pipe in a central through hole in the rear section of the screw bolt after cooling the front section of the screw bolt; and because an air heat-insulating layer exists between the inner wall of the central through hole in the rear section of the screw bolt and the outer wall of the large return pipe, the cooling oil can not cool the rear section of the screw bolt. The invention can be widely applied to the field of processes requiring the material cooling sectionally.

The invention discloses an integrated core drilling machine for a single-cylinder double-acting tower crane. The integrated core drilling machine comprises a core drilling machine, a drilling tower and a tower-lifting oil cylinder, wherein the drilling tower comprises a tower body and a drilling tower rotary base; the tower body and the drilling tower rotary base are connected by a hinging shaft and a fastening mechanism of a lifting tower; a drilling tower fixed base is arranged on a rack in the front of the core drilling machine and is connected with the drilling tower fixed base by a rotary shaft which is arranged transversely; steering plates are arranged at a joint of the lifting tower oil cylinder and the tower body and is hinged with the back edge side of the back side of the tower body by a rotary shaft which is arranged vertically; and locking mechanisms matched with the steering plates are arranged on the reverse side and the back side of the tower body. The steering plates are matched with the locking mechanisms, the same hydraulic oil cylinder can lift and drop the tower under the condition that the hydraulic oil cylinder is not added, and an angle of the drilling tower can be adjusted in another direction to fulfill the aim of punching inclined holes, so that the single-cylinder double-acting is realized; and moreover, hoisting equipment and carrying equipment are not needed to fulfill the aim of moving hole positions, so that the costs of dismounting, carrying and assembling the tower are reduced.

The invention discloses a pipeline oil stain cleaning device. The pipeline oil stain cleaning device comprises a water storage bin, four high-pressure water guns are arranged on the lateral end face of the water storage bin, the high-pressure water guns are arranged on the same section, and the normals of every two adjacent high-pressure water guns are perpendicular to each other. Four moving devices are further arranged on the lateral end face of the water storage bin, the moving devices and the four high-pressure water guns are located on the same section, and the normals of every two adjacent moving devices are perpendicular to each other. One end of each moving device is connected with the water storage bin, the other end of each moving device is closely attached to the inner wall of apipeline, the moving devices are provided with electric motors for supplying energy, and the cleaning device is driven to move front and back in the pipeline. Due to the arrangement of the four high-pressure water guns, cleaning fluid is sucked out of the water storage bin and extruded to form water columns sprayed towards the inner wall of the pipeline, and oil stains on the inner wall of the pipeline are scrubbed thoroughly; and in addition, through front-back movement of the moving devices, the whole cleaning device can move in the pipeline, and the inner wall of the whole pipeline is cleaned comprehensively.

The invention provides a transformer substation monitoring device, method and system and relates to the technical field of electric power. The device comprises a sedimentation acquisition unit, a horizontal displacement acquisition unit, a data processor and a display device, wherein the sedimentation acquisition unit is arranged at an underground position of a monitoring point and is used for acquiring sedimentation data of the monitoring point; the horizontal displacement acquisition unit is arranged at a ground surface position of the monitoring point and is used for acquiring horizontal displacement data of the monitoring point; the data processor is used for obtaining the sedimentation data and the horizontal displacement data and displaying the sedimentation data and the horizontal displacement data through the display device, and is also used for sending the sedimentation data and the horizontal displacement data to a remote terminal through a wireless manner so as to carry out analysis and early warning on the sedimentation data and the horizontal displacement data by the remote terminal. According to the transformer substation monitoring device, method and system, the sedimentation data and the horizontal displacement data of a transformer substation foundation can be acquired in real time and the analysis and early warning on the data are carried out by the remote terminal, and hidden dangers can be found in time so that operation safety of an electric power system is ensured.

The invention discloses an engineering drilling device, and relates to the field of drilling devices in grouting construction. The engineering drilling device comprises a tamping machine head, a drill stem and a drill bit. A connecting base is installed below the tamping machine head, the drill stem is connected with the connecting base through a vibrating head, and the drill bit is installed at the tail end of the drill stem and connected with the drill stem in a threaded mode. The engineering drilling device further comprises a buffer device. The buffer device is arranged on the drill stem in a sleeved mode and located between the drill bit and the connecting base and comprises a fixing plate, a spring and a locating plate. The fixing plate is connected with the drill stem in a threaded mode, the spring is arranged below the fixing plate, and the lower portion of the spring is connected with the locating plate. The engineering drilling device is simple in structure, high in work efficiency and good in economic benefit.

The invention relates to a novel anti-eccentric wear hydraulic oil extraction device which comprises surface power equipment and underground produced liquid equipment. The surface power equipment comprises a power liquid storage tank, a plunger pump, an energy accumulator and a reversing valve; the underground produced liquid equipment comprises a power liquid pipeline, a power pump and a produced liquid oil tube, the lower portion of the power liquid pipeline is connected with a power pump piston, the lower portion of the produced liquid oil tube is connected with an oil extraction pump pump-cylinder, the oil extraction pump pump-cylinder is internally provided with an oil extraction pump plunger which is internally provided with a traveling valve, the lower portion of the oil extraction pump pump-cylinder is connected with an underground oil tube, a standing valve is arranged on the position where the underground oil tube and the oil extraction pump pump-cylinder are connected, and a produced liquid storage cavity is formed between the oil extraction pump plunger and the standing valve; a power pump cylinder barrel is connected with the oil extraction pump plunger through a weighing rod in an up and down mode; a produced liquid outlet is formed in the upper end of the produced liquid oil tube. Power liquid and produced fluid are isolated all the time, and huge equipment on the ground is removed; the reversing valve is arranged on the ground, the underground structure is simple and reliable, and operation is convenient; meanwhile, the problem that the service life of underground equipment is short is solved.