44results about How to "Meet mining needs" patented technology

The invention discloses a natural gas hydrate mining device and method based on the solar energy and seawater source heat pump combined heat supply technology. The natural gas hydrate mining method mainly refers to a maritime floating platform, a solar energy heat-collecting unit, a seawater source heat pump unit, a solar energy generating unit, a seabed natural gas hydrate mining unit and a monitoring control unit. According to the method, abundant solar energy and seawater energy in a sea area are utilized to supply heat, and the heat serves as a basic heat source for heat injection method mining of seabed natural gas hydrates; meanwhile, power consumption devices of a compressor, an overheating device, a pump and the like in a system are supplied with the energy through solar energy generating, and thus in the method, the solar energy and the seawater energy are combined to supply the energy for mining the natural gas hydrates; and according to the natural gas hydrate mining method,the reproducible solar energy and seawater energy resources can be utilized to mine the seabed natural gas hydrate resources efficiently, the input cost of the mining heat source is reduced greatly,the process is simple, multiple benefits of the economic benefit, the environmental benefit, the social benefit and the like are achieved, and large-scale commercial mining of the natural gas hydratesis facilitated.

The invention relates to a high efficiency short wall coal cutter that includes cut arm, lifting oil cylinder and sliding base frame. The cut arm is made up of cut motor, cut roller and cut reducer. The invention designs the cut arm to portrait swinging, and the cut roller to circular truncated cone. It size of the machine would sharply decrease and the entire structure is small and flexible. It has the advantages of simple structure, light weight, low cost and high efficiency.

The invention provides concrete with heat insulation performance. The concrete with the heat insulation performance comprises pulverized fuel ash, cement, water, sands, melon seed slices, ceramisites, an early strength agent, a water reducing agent and polypropylene fibers, wherein a weight ratio of the pulverized fuel ash to the cement to the water to the sands to the melon seed slices to the ceramisites to the early strength agent to the water reducing agent to the polypropylene fibers is equal to (10-30):(70-90):(40-50):(150-200):(80-160):(40-120):(3-6):(0.5-2):(0.25-0.45). The concrete with the heat insulation performance provided by the invention has good heat insulation performance and fire resistance, and ensures that the heat preservation and load-bearing requirements for deep mining of mines can be met.

The invention discloses an oil field steam injection boiler steam dryness increasing device, and mainly solves the defect of low thickened oil production efficiency due to insufficient dryness of steam provided by a traditional oil field steam injection boiler. The oil field steam injection boiler steam dryness increasing device is characterized in that a steam dryness increasing pipeline (2) includes a boiler steam outlet (1), a high-pressure steam and water separator (4) and a sampling separator (5); boiler steam passes through a high-pressure stop valve A (3) by the boiler steam outlet (1) to enter the high-pressure steam and water separator (4); and high-dryness steam separated by the high-pressure steam and water separator (4) enters the sampling separator (5), and passes through a pressure transducer A (6), a one-way valve (7) and a high-pressure stop valve B (8) in sequence to enter a steam injection pipe network through a steam injection pipe network joint (30). The oil field steam injection boiler steam dryness increasing device can increase the steam dryness by above 95% so as to improve the thickened oil production efficiency.

The invention relates to the technical field of oil production engineering, and belongs to a gas well storage type integrated layered production allocation pressure gauge, which solves the problem in the prior art that long-term pressure monitoring and productivity allocation during a dynamic production process of two gas producing zones cannot be realized at the same time. The gas well storage type integrated layering and production allocating pressure gauge is formed by a salvaging connector (1), a positioning main body (2), anti-rotation pins (3), positioning scissors (4), torsion springs (5), scissor pins (6), regulating sleeves (7), a pressing cap (8), an air faucet (9), regulating rings (10), sealing packings (11), pressing rings (12), a production allocation main body (13), a sensor (14), a back-up nut (15) and a pressure gauge cabin (16). The gas well storage type integrated layered production allocation pressure gauge disclosed by the invention has the advantages that the structure is simple and reliable, static and dynamic production of two kinds of gas producing zones and long-term monitoring on pressure in a shaft can be realized at the same time, and the like.

The invention discloses steel for a petroleum valve body and a preparation method thereof. The steel comprises C, Si, Mn, P, S, Cr, Mo, Ni, 0.01-0.02% of Nb, 0.01-0.02% of V, Al, Cu, Ti, As, Sn, Sb, Pb, Bi, H, O, N, Fe and inevitable impurities. The preparation method comprises the steps of electric furnace smelting, LF refining, VD vacuum treatment, continuous casting and rolling. By adding V and Nb microalloying elements, precipitation strengthening and fine grain strengthening are promoted, the strength and toughness of the material are improved, especially the low-temperature impact toughness is improved, and smelting, continuous casting and rolling process parameters are controlled in the preparation process, so that the steel has high purity, compact structure and good mechanical performance, and the requirement of deep sea oil exploitation is met.

The invention discloses a high-molecular polymer oil displacement surfactant for an oil field and a preparation method of the high-molecular polymer oil displacement surfactant and belongs to the technical field of oil field development. The high-molecular polymer oil displacement surfactant is prepared from a DMAG quaternary polymer and an AS polymer; the DMAG quaternary polymer is composed of areaction monomer, an initiator and distilled water; the reaction monomer is composed of dimethyl maleate, maleic anhydride, 2-acrylamide-2-methylpropanesulfonic acid and dehydrated glyceryl methacrylate; the initiator is azodiisopropylimidazoline acid salt; the AS polymer is polymerized in distilled water by taking acrylamide and vinylbenzene sulfonic acid as reaction monomers, 2,2'-Azobis[2-(2-imidazolin-2-yl)propane] dihydrochloride(AIBI) as an initiator and mercaptoethylamine sulfonate as a chain transfer agent. The prepared oil displacement surfactant and crude oil form emulsion, the viscosity of the crude oil can be effectively reduced, remaining oil in stratum gaps can be effectively exploited, and the exploitation requirement of an oil field for thick oil and pore remaining oil is met.

The invention discloses an upper-layer low-pressure negative pressure separate mining device, which includes a main body, a first eccentric through hole and a second eccentric through hole opened on the top surface of the main body communicate with a central through hole opened on the bottom surface of the main body; a valve seat and a ball valve respectively Block the top end of the first eccentric through hole and the connection between the first eccentric through hole and the central through hole, and the communication hole between the first eccentric through hole and the second eccentric through hole is located above the ball valve; the throat is inserted in the In the second eccentric through hole, the central channel communicates with the second eccentric through hole; the inner diameter of the bottom end of the throat increases and a nozzle is provided to communicate the central channel of the throat with the central channel of the nozzle; the pressure cap is arranged on the inner wall of the main body The third eccentric through hole set in the center of the pressure cap coincides with the central axis of the second eccentric through hole, so that the nozzle is located inside the top of the third eccentric through hole; the upper low-pressure negative pressure separation device solves the It solves the problem that the pressure difference between layers in multi-layer mining leads to backflow from high-pressure layer to low-pressure layer, and realizes multi-layer joint mining.

The invention discloses ground ditch excavating equipment for a construction site. The equipment comprises a top frame, wherein supporting legs are arranged at the four corners of the lower end of thetop frame, moving wheels are installed at the bottoms of the supporting legs, an mounting disc is arranged below the front portion of the top frame, two symmetrical first guiding telescopic rods arefixedly connected to the upper end of the mounting disc, the other ends of the first guide telescopic rods are fixedly connected to the lower side of the top frame, two first lifting oil cylinders arearranged at the upper end of the top frame, the telescopic ends of the two first lifting oil cylinders downwards penetrate through the top frame and are fixedly connected to the mounting disc, a mounting groove is formed in the upper end of the mounting disc, a soil loosening mechanism is arranged in the mounting groove, a connecting base is fixedly connected to the lower side of the middle of the top frame, and an excavating mechanism is arranged on the connecting base. According to the ground ditch excavating equipment for the construction site, by arranging the soil loosening mechanism, the excavating difficulty is reduced, the excavating efficiency is improved, excavated soil can be lifted out of a ditch in time, and the inner wall of the excavated ditch is compacted.

The invention relates to a short-span thin coal seam coal mining machine. The coal mining machine comprises a cutting system, a machine body, a guide sliding shoe, a dragging connecting device and a supporting sliding shoe; the root of a motor-free rocker arm of the cutting system is rotationally supported in a standing shell of a non-swing transmission part, and large and medium size parts such as a cutting motor, a large gear and a planetary mechanism of the cutting system do not change positions along with swing of the rocker arm; the standing shell is fixed to the machine body and locatedin front of the machine body, and the standing shell and the machine body form a basic frame of the coal mining machine; and the guide sliding shoe and the supporting sliding shoe are both installed on the basic frame, the guide sliding shoe and the supporting sliding shoe support the rear portion and the middle portion of the basic frame from the lower portion respectively, and the machine body is in floating connection with a dragging chain of a scraper conveyor through the dragging connecting device. According to the short-span thin coal seam coal mining machine, the structural arrangementproblem of the short-machine-body high-power thin coal seam coal mining machine for the ultra-thin or thin coal seam working face with the complex conditions of low mining height, high coal rock hardness and the like can be solved.

The invention discloses an upper layer high-pressure negative-pressure separated exploiting device. The upper layer high-pressure negative-pressure separated exploiting device comprises a main body, a valve seat, a ball valve, a throat pipe and a pressing cap, wherein a first eccentric through hole and a second eccentric through hole are formed in the top surface of the main body, a central through hole is formed in the bottom surface of the main body, and the first eccentric through hole and the second eccentric through hole communicate with the central through hole; the valve seat and the ball vale are arranged at the end of the top end of the first eccentric through hole and the communicating part between the first eccentric through hole and the central through hole correspondingly, a communicating hole formed in the portion between the first eccentric through hole and the second eccentric through hole is formed above the ball valve; the throat pipe is installed at the bottom of the second eccentric through hole in an inserted mode, the inner diameter of the bottom end of the throat pipe is increased, and the bottom end of the throat pipe is provided with a spraying nozzle, and thus a central hole channel of the throat pipe, the second eccentric trough hole and a central hole channel are connected sequentially; the pressing cap is arranged on the inner wall of the lower side of the main body, a third eccentric through hole and a fourth eccentric through hole are formed in the top surface of the pressing cap, and the fourth eccentric through hole communicates with an overflowing hole which is formed in the side wall of the lower side of the main body. According to the upper layer high-pressure negative-pressure separated exploiting device, the through capability of fluid in the low pressure area is maximally improved, the application range of interlayer pressure differences of tools is enlarged, and the exploiting efficiency is greatly improved.

The invention provides a manufacturing process method of a valve seat for a fracturing pump. The method comprises the specific steps of forming a concave notch in the surface area of a valve seat blank, performing surfacing on high-strength alloy powder into the concave notch in a plasma surfacing mode to make the alloy powder melted, mixed, diffused and solidified, and performing self-excited cooling after welding to obtain a high-performance alloy layer of the valve seat for the fracturing pump. According to the method, a plasma surfacing process is adopted to replace a traditional carburizing treatment process, the problems that the depth of a carburized layer is low and the hardness sharply decreases along with the depth of the carburized layer in the carburizing process are avoided, the high-hardness depth of the valve seat can reach 2-3 mm, and the hardness is uniform and will not decrease along with surface abrasion. Therefore, the product quality of the valve seat is improved,the product service life of the valve seat is prolonged, the frequency of replacement or maintenance of the fracturing pump is reduced, the labor intensity of workers is reduced, the product reliability is improved, shutdown or pump stop caused by failure in the operation process is avoided, and the shale gas exploitation requirement is better met.

The invention relates to a multi-blade saw mine quarrying machine comprising a track and a walking frame, wherein the walking frame walks along the track, the back part of the walking frame is provided with a hydraulic system and a pushing motor, the front part of the walking frame is provided with a working port in which a movable frame is placed, the movable frame is supported on the walking frame by a hydraulic ram, the back part of the movable frame is provided with a working motor, the front end of the movable frame is horizontally connected with a rotating shaft through a bearing brush, a pair of driven pulleys are symmetrically arranged on the rotating shaft, the driven pulleys are connected with driving pulleys of the working motor through pulley sleeves, and more than one disc saw blade is arranged on the rotating shaft at intervals. The quarrying machine has the advantages of compact structure, stability, safe use, integral moulding of mining, no need of secondary processing, low mining and processing cost and wide range of application, and can realize the synchronous mining of multi-channel stone and the control of the specifications of the stone through regulating the walking speed of the walking frame, the height of the movable frame and the distance among a plurality of disc saw blades.