264results about How to "Improve the blocking effect" patented technology

The invention relates to a preparation method and application of an inner-rigid outer-soft core-shell structure silicon dioxide blocking agent for marine drilling fluid, and belongs to the field of deepwater oil and gas drilling. N-vinyl-2-pyrrolidone, dimethyl diallyl ammonium chloride, acrylamide and 2-acrylamide-2-methylpropanesulfonic acid are polymerized and grafted on the surface of nano silicon dioxide to form the silicon dioxide blocking agent with a core-shell structure and a rigid inside and a soft outside; by means of rigid plugging of a nano material and deformation filling flexible plugging of a high-molecular polymer, shale micro-nano pores are efficiently plugged with rigid inside and flexible outside, so that the stability of a well wall is maintained, meanwhile, secondary generation of hydrates is effectively inhibited, and the safety and efficiency of deepwater drilling are improved; the plugging agent provided by the invention reduces the demand on a large number of thermodynamic inhibitors, not only saves the cost, but also has the characteristic of environmental protection.

The invention provides an emulsion slow crosslinking type plugging control gel, which is in an oil-in-water type, and is prepared from the following raw materials in percentage by weight: 25 to 40 weight percent of nonionic monomer, 0.5 to 2 weight percent of dihydroxy anthraquinone, 5 to 16 weight percent of anionic monomer, 0.002 to 0.2 weight percent of initiator and the balance of water. The emulsion comprises the following components in percentage by weight: 10 to 35 percent of deionized water, 15 to 30 percent of non-polar solvent, 2 to 8 percent of emulsifier, 1 to 4 percent of emulsifying aid and 0.5 to 1.5 percent of phase inversion agent. According to the plugging adjusting gel, the modified functional monomer dihydroxy anthraquinone is added, and the dihydroxy anthraquinone and monomers such as acrylamide are copolymerized to form oil-in-water type polymer gel, so that the initial viscosity is low, the strength and the plugging rate are high, and the gelling time is controllable.

The invention discloses a multi-cluster interlayer / in-fracture temporary plugging diversion fracturing process and a product preparation method, and particularly relates to the technical field of petroleum and natural gas exploitation, the fracturing process comprises the steps of dividing fracturing sections according to the physical property of a horizontal section reservoir of a coal-bed gas well, monitoring and automatically adjusting parameters during drifting, injecting prepad fluid to form a main fracture, and injecting sand adding fluid in a stepped mode. Preparing and injecting a temporary plugging material, injecting prepad fluid again to form a new crack, injecting sand-adding fluid into the new crack, replacing the sand-carrying fluid with clear water after fracturing, discharging the fluid and monitoring. The preparation method of the temporary plugging material comprises the steps of raw material mixing, extrusion granulation, drying, secondary extrusion granulation and the like, and the performance of the temporary plugging material is ensured through the measures of a specially designed screw structure, accurate control of temperature and humidity, addition of an auxiliary agent and the like. According to the method, the longitudinal crack coverage rate and the oil and gas recovery rate are increased, accurate control is achieved, the formation damage rate and the accident rate are reduced, it is ensured that the quality of the temporary plugging material is stable, and the formation permeability recovery rate is increased.

The invention discloses an inorganic / organic nano composite plugging agent, which is prepared from the following raw materials in parts by weight: 0.7 to 3.5 parts of modified nano particles, 10 to 50 parts of alkenyl amide monomers, 0.5 to 3 parts of alkenyl associated monomers, 20 to 50 parts of alkenyl sulfonic acid monomers, 10 to 20 parts of alkenyl cationic monomers and 0.5 to 1.0 part of initiators, the modified nano-particles are formed by carrying out surface modification on nano-particles by adopting a coupling agent. According to the invention, by introducing a flexible polymer chain segment with a proper amount of association, strong adsorption and other effects into rigid nanoparticles, the deformability of the nanoparticles and the connection force between the nanoparticles and a shale stratum are improved, so that the plugging capability of the plugging agent on multi-scale micro-pores and micro-cracks of the shale stratum is improved; and the plugging agent has the characteristics of wide particle size distribution, physical and chemical synergistic plugging effect, good high-temperature stability, simple preparation method, easily available raw materials and the like, and is suitable for drilling leakage of shale formations.

The invention relates to the technical field of toilet waterproofing, and provides a toilet waterproof structure and a construction method thereof.The toilet waterproof structure is arranged at the junction of a dry area finished surface and a wet area finished surface and sequentially comprises a threshold stone, a bonding layer arranged on the lower surface of the threshold stone and a waterproof layer arranged below the bonding layer from top to bottom; the upper surface of the threshold stone is flush with the upper surface of the dry area finished surface, the upper surface of the threshold stone is higher than the upper surface of the wet area finished surface, and the waterproof layer is laid on the upper surface of the structure base layer; the two sides of the waterproof layer extend to the positions below the dry area finished face and the wet area finished face respectively, and the waterproof layer comprises a first area arranged below the wet area finished face, a second area arranged at the junction of the threshold stone and the wet area finished face, a third area arranged below the threshold stone and a fourth area arranged below the dry area finished face. The waterproof structure has the beneficial effect that the waterproof effect of the doorsill of the toilet is improved.

The invention discloses a bypass blocking method and device, a medium, electronic equipment and a program product. The method comprises the following steps: responding to a plurality of sub-packets of a client greeting message, analyzing the plurality of sub-packets in sequence according to the sequence of serial numbers until a complete target field is obtained, dividing the client greeting message into the plurality of sub-packets by a client, sending the sub-packets to a server, and in the analysis process, sending the sub-packets to the server; caching a reference field of the last extension field of the currently parsed sub-package as a parsing basis of the next to-be-parsed sub-package; extracting a domain name from the complete target field; and if the domain name belongs to the target type domain name, sending a reset message to the server and / or the client to block communication between the server and the client. Therefore, SNI cross-packet analysis can be efficiently completed, the blocking success rate of the communication connection between the client and the server is improved, and the blocking effect of the public cloud domain name is improved.

The inorganic quick-setting filling material comprises a material A and a material B. The material A is prepared from the following components in parts by weight: 25-35 parts of sulphoaluminate cement, 30-40 parts of blast furnace slag, 10-20 parts of waste gypsum, 1-3 parts of recycled alumina fiber, 5-10 parts of volcanic ash and 0.8-1.2 parts of (3, 6-diamino acridine-9-yl) boric acid. The material B is prepared from the following raw materials in parts by weight: 4 to 6 parts of functional water-soluble resin, 1 to 2 parts of sodium 3-(N-morpholinyl)-2-hydroxypropanesulfonate, 0.5 to 0.8 part of sucralose, 0.1 to 1 part of sodium lignin sulfonate, 0.8 to 1.2 parts of 1, 3, 5-triglycidyl-S-triazinetrione and 0.1 to 0.5 part of sodium N-(trimethoxysilylpropyl) ethylenediamine triacetate. The material is good in rapid hardening effect, high in compressive strength, good in flame-retardant and antistatic performance and long in service life.

The invention discloses a TBC battery structure, a preparation method thereof and a TBC battery, in the structure, a P region and an N region are respectively provided with a P-type / N-type doped polycrystalline silicon passivation layer, and an oxygen-doped polycrystalline silicon layer is arranged between the P region and the N region. The preparation method comprises the step of preparing the P-type / N-type doped polycrystalline silicon passivation layer and the oxygen-doped polycrystalline silicon layer on the P region and the N region. In the structure, the oxygen-doped polycrystalline silicon layer is arranged between the P region and the N region, so that the P region and the N region can be effectively separated, an excellent shadow shielding resisting function of a corresponding assembly can be realized, and the generating capacity of the assembly in a shadow shielding environment can be further improved. According to the preparation method, the design of depositing multiple tunneling oxide layers and polycrystalline silicon layers at a time, the design of a laminated mask, a new isolation mode, an efficient cleaning process and the like are adopted, the problems that an existing TBC battery preparation process is tedious, boron-doped polycrystalline silicon laser ablation residues exist, the investment and generation cost is high and the like are effectively solved, and the preparation method is a brand-new TBC battery route.

The invention relates to the technical field of scale inhibitors, and particularly discloses a preparation method of a corrosion and scale inhibitor, which comprises the following steps: dissolving modified polyaspartic acid in hydrogenated diesel oil, adding an antioxidant, and uniformly mixing to obtain a solution A; dissolving hydrolytic polymaleic anhydride in hydrogenated diesel oil to obtain a solution B; the preparation method comprises the following steps: uniformly mixing an imidazoline oleoyl polyamine corrosion inhibitor and 2-amino-5-methyl-4-phenylthiazole to obtain a mixture C; the preparation method comprises the following steps: adding sodium dodecyl benzene sulfonate into hydrogenated diesel oil, then adding nano titanium dioxide and nano zinc oxide, and uniformly mixing to obtain dispersion liquid D; dissolving a dispersing agent in the hydrogenated diesel oil to obtain a solution E; and mixing the solution A and the solution B in a reactor, heating for reaction, adding the mixture C, heating for reaction, cooling, adding the solution E, adding the dispersion liquid D, heating for reaction, cooling, carrying out solid-liquid separation, and distilling to obtain the product. The corrosion and scale inhibitor prepared in the invention has good temperature resistance.

The invention discloses a sealing structure for helium detection, detection equipment and a detection method. The sealing structure for helium detection comprises a first connecting body and a second connecting body, the first connecting body is provided with a first connecting surface; the second connecting body is provided with a second connecting surface; a first sealing assembly and a second sealing assembly are arranged on the first connecting surface; the first sealing assembly makes contact with the second connecting face to form a first sealing face, and the contact position of the second sealing assembly and the second connecting face forms a second sealing face. An isolation area is formed between the first sealing surface and the second sealing surface; the first connector is provided with an isolation assembly, and the isolation assembly is arranged between the first sealing assembly and the second sealing assembly; the isolation assembly comprises an isolation hole, one end of the isolation hole communicates with the isolation area, and the other end of the isolation hole is connected with a first evacuator; and continuously evacuating the isolation area through the first evacuating device. Interference of gas leakage on a test result can be reduced, and the test reliability is improved.

The invention provides a many-to-many saturation interception target allocation optimization method and system based on threat sorting. In order to solve the problem of target distribution in multi-target multi-interception saturation interception, threat attribute values such as attack object value, residual distance, flight speed and type value of an air attack target are introduced, and a comprehensive threat quantitative evaluation sorting method is provided through normalization and weight coefficient processing. Meanwhile, an interception success probability rapid calculation model based on the zero-control miss distance and the relative position and a first-time and second-time target distribution optimization algorithm based on threat sorting and a success rate matrix are constructed. The method has the advantages of being few in parameter, easy to obtain, small in calculation amount, capable of achieving real-time dynamic processing, wide in application range and the like, and the comprehensive efficiency of large-scale saturated multi-target multi-interceptor collaborative interception combat is remarkably improved.

The invention discloses an adapter and a track socket, the adapter comprises a socket body and a guide seat, the socket body is arranged on the guide seat, the socket body is provided with a plug bush assembly, a rotatable movable conductive assembly and a rotating member, and the plug bush assembly is electrically connected with the movable conductive assembly. When the rotating piece rotates, the limiting blocking piece and the movable conductive assembly are driven to unfold or fold relative to the guide seat; according to the adapter, the limiting blocking piece is additionally arranged, so that when the adapter is installed on the power rail, the limiting blocking piece can be matched with the corresponding limiting structure on the power rail to reduce or limit the movement of the adapter generated when the plug is pulled out, namely, the movement of the movable conductive assembly is reduced or limited; instant arc generated by friction between the movable conductive assembly and the track conductive sheet assembly of the power track is reduced, stable electric connection of the movable conductive assembly is facilitated, and the service life of the movable conductive assembly is prolonged.

The invention provides a cationic alkyl glycoside soilless phase drilling fluid. The cationic alkyl glycoside soilless phase drilling fluid is prepared from the following components: 3 to 8 parts of cationic alkyl glycoside, 0.2 to 0.5 part of a coating agent, 0.2 to 0.8 part of a tackifier, 0.5 to 1 part of a filtrate reducer, 0.8 to 1.5 parts of a lubricant, 0.3 to 1.5 parts of a pH regulator, 2 to 3 parts of a reservoir protective agent, 1 to 2 parts of a weighting agent and the balance of water. The cationic alkyl glycoside soilless phase drilling fluid provided by the invention has the advantages of strong anti-sloughing inhibition property, facilitation of mudstone section anti-sloughing and borehole wall stability, excellent rheological property, good rock debris pollution resistance, improvement of the viscosity and shearing force of the drilling fluid, effective improvement of the rock debris carrying capacity of the drilling fluid, and improvement of the drilling efficiency. The lubricating capacity of the drilling fluid is also improved, drill jamming is prevented, the frictional resistance of the drilling fluid is reduced, the plugging capacity of the drilling fluid is enhanced, and the defoaming agent is arranged to reduce bubbles and reduce the influence of the bubbles on the plugging effect of the drilling fluid.

The utility model discloses a reversing conveying device for floor support plate production, which comprises a frame, a first conveying component and a second conveying component, and the conveying directions of the first conveying component and the second conveying component are perpendicular to each other; the device further comprises an adjusting assembly, the adjusting assembly is connected with the first conveying assembly and / or the second conveying assembly, and the first conveying assembly and / or the second conveying assembly can be driven by the adjusting assembly to move relative to the rack. The material blocking assembly comprises a material blocking part and a material blocking drive matched with the material blocking part, and the material blocking part has a waiting state and a working state; in the vertical direction, the upper edge of the material blocking part is higher than the upper edge of the first conveying assembly or the upper edge of the second conveying assembly in the working state. The material blocking piece can be driven by the material blocking drive to ascend or descend or turn over relative to the machine frame to achieve switching between the work waiting state and the work state. The production efficiency is improved, the installation space of working environments such as workshops is utilized more effectively, and the space utilization rate is increased.

The utility model belongs to the field of heat supply pipeline construction, and particularly discloses a detachable steel pipeline orifice plugging device, which adopts the technical scheme that an annular clamp is arranged on a thermal insulation pipe, the annular clamp is detachably fixed on the outer side of the thermal insulation pipe, and a plugging steel plate is arranged at the orifice of the thermal insulation pipe. The plugging steel plate is connected with the annular embracing clamp through a plurality of buckles; the buckle comprises an upper screw rod, a connecting piece and a lower connecting rod, the upper screw rod sequentially penetrates through a first mounting hole pre-formed in the plugging steel plate and a second mounting hole pre-formed in the connecting piece and then is fixedly connected with the nut, and one end of the lower connecting rod is connected with a hanging plate pre-arranged on the annular embracing clamp; and the other end of the lower connecting rod penetrates through a third mounting hole pre-formed in the connecting piece and then is fixedly connected with a nut. The pipe orifice plugging device is easy and convenient to operate, good in plugging effect and capable of efficiently plugging a pipe orifice in an environment-friendly mode under the condition that an original pipeline is not damaged, and time and labor cost are greatly saved.

The utility model relates to the field of cleaning devices, in particular to a sewage tank and a cleaning device. The sewage tank comprises a tank body, a separation bracket and a non-return structure, the box body is provided with a containing cavity, the containing cavity is provided with an air inlet and an air outlet, the separation support is arranged in the containing cavity and divides the containing cavity into a first cavity body and a second cavity body, the air inlet and the air outlet are both communicated with the second cavity body, and a sewage overflowing opening communicated with the first cavity body and the second cavity body is formed between the separation support and the box body. The sewage overflowing opening is provided with a first end face facing the first cavity, and the first end face is obliquely arranged relative to the extending direction of the containing cavity. The non-return structure comprises a flexible part, the flexible part is arranged on the first end face, and when the sewage tank is in an upright state, the flexible part opens the sewage overflowing opening; and when the sewage tank is in a non-upright working state, the flexible piece seals the first end face so as to seal the sewage overflowing opening. According to the technical scheme, the problem that sewage in the sewage tank is prone to backflow in the prior art can be effectively solved.

The application discloses a polyurethane and rock wool composite board side foaming leakage prevention device, and belongs to the technical field of building material processing. The device comprises a conveying frame and a foaming filling pipe. The board is conveyed on the conveying frame, and the foaming filling pipe is inserted into the gap between the rock wool layer and the lower side film paper. The front side of the lower side film paper is provided with a first guide piece, and the rear side is provided with a second guide piece. The lower side film paper is arranged between the first guide piece and the second guide piece. The upper side film paper is located at the front side of the first guide piece. A pressing wheel is arranged in front of the upper side film paper and is used for laminating the upper side film paper and the upper side layer. A carding piece is arranged and is used for pressing the upper side film paper and the lower side film paper together. The first guide piece is provided with glue which is coated on the surface of the lower side film paper and the upper side film paper. When the board moves on the conveying frame, the lower side film paper and the upper side film paper are bonded and pressed together. The application is used for solving the problems that the barrier layer is easy to deviate and the foaming is easy to leak during the processing of the composite board.

The invention provides an organic compound, a preparation method thereof and an organic electroluminescent device, and belongs to the technical field of luminescent materials, and the organic compound has a structure as shown in a general formula I. The organic compound is used as a luminescent auxiliary material, can effectively improve the luminescent efficiency and stability of the organic electroluminescent device, and has good application prospects. The service life is prolonged, the driving voltage is reduced, and the device is endowed with more excellent comprehensive performance.

The application belongs to the technical field of new energy automobile charging, and particularly relates to a direct-current split type charging host, aiming at the problems of inconvenient transportation of the existing split type host, and poor protection effect on the charging terminal, and the following scheme is proposed, which comprises a mounting box, a base is fixedly installed at the bottom of the mounting box, two movable doors are hingedly connected to one side of the mounting box, and a storage bin is fixedly installed at the top of the mounting box; a first charging terminal and a second charging terminal are arranged on the two sides of the mounting box, in the application, the split type charging host can be combined and installed with at most two charging terminals, the split type charging host can be conveniently transported, and the use of the charging state is not affected, and meanwhile, when the charging terminals are installed on the two sides of the charging host, the charging terminals can be continuously shielded, the tarpaulin for shielding can be synchronously extended with the extension of the terminals, and the long-term use of the charging terminals is facilitated.

The invention provides a silicon carbide-based metal oxide semiconductor field effect transistor and a method. The silicon carbide-based metal oxide semiconductor field effect transistor comprises a substrate; the first n-type epitaxial layer and the second n-type epitaxial layer are sequentially stacked on the first surface of the substrate, and through grooves are formed in the middles of the first n-type epitaxial layer and the second n-type epitaxial layer; a first p-type protection layer disposed in the trench; the second p-type protection layer is arranged in a first region on the two sides of the groove in the second n-type epitaxial layer, and the first region and the groove are spaced by a preset distance; when the silicon carbide-based metal oxide semiconductor field effect transistor is under the pressure applying condition, depletion regions are formed among the first n-type epitaxial layer, the second n-type epitaxial layer, the first p-type protection layer and the second p-type protection layer, so that voltage is blocked. By introducing the first P-type protection layer and the second P-type protection layer, the double P-type protection layers and the column-type shielding layer are formed, the drift region of the device realizes a more sufficient depletion effect, and the voltage endurance capability and the blocking efficiency are improved.

The invention relates to the technical field of bolt hole construction, and particularly discloses a split bolt hole plugging device which comprises a drill bit, a motor, a cleaning brush, a connecting assembly and a grouting pump. An insertion pipe grouting hole is formed in the drill bit in a penetrating manner; the motor drives the drill to rotate; the cleaning brush is detachably arranged at the front end of the drill bit; the grouting pump is connected to the slurry storage equipment through a suction pipe; the connecting assembly is used for connecting the grouting hose and the pipe inserting grouting hole of the drill bit. Impurities in the split bolt hole are cleaned through the cleaning brush, the cleaning brush is taken down after cleaning is completed, the grouting hose and the drill bit are connected through the connecting assembly, and a grouting channel is formed; and grouting is conducted at the center through the insertion pipe grouting hole of the drill bit, and the grouting quality and the plugging effect are improved.

The invention provides a dimethylcaine compound preparation and a preparation method thereof. Every 100 parts of the compound preparation comprises the following raw materials in parts by weight: 2 to 5 parts of dimethylcaine and 2 to 5 parts of trimethylcaine. The dimethylcaine compound preparation contains chlorhexidine gluconate, Tween 80, oleic acid, polyethylene glycol 400 and purified water, and every 100 parts of the compound preparation is prepared from the following raw materials in parts by weight: 2 to 5 parts of dimethylcaine, 2 to 5 parts of trimethylcaine, 0.1 to 0.3 part of chlorhexidine gluconate, 4 to 6 parts of Tween 80, 4 to 6 parts of oleic acid, 15 to 25 parts of polyethylene glycol 400 and the balance of purified water. Dimethylcaine and trimethylcaine are compounded, so that the blocking effect can be effectively enhanced, the anesthetic effect can be synergistically improved, the anesthetic dosage can be reduced, the side effect can be reduced, and the safety can be improved. Secondly, polyvinylpyrrolidone K90, polyglycerol ester and ascorbic acid in a specific proportion are added, so that the bioavailability of the anesthetic is further improved, the anesthetic effect is enhanced, and meanwhile, the stability of the anesthetic is further improved.

The utility model relates to the technical field of bridge drainage, and discloses a bridge drain hole filter screen convenient to replace, which comprises a filter screen barrel, a filter screen hopper is mounted at the top of the filter screen barrel, circular filter holes are formed in the surfaces of the filter screen barrel and the filter screen hopper, and basket holes are formed in the tops of two sides of the filter screen hopper. The filter screen is installed in a sinking and embedding mode, the filter screen can be conveniently installed in a drain hole of a bridge through the hopper-shaped design of the filter screen hopper, large-particle sundries can be well intercepted, and blockage caused by the fact that the large-particle sundries enter a drain pipe is avoided; and when round filter holes in the bottom of the filter screen barrel are blocked by settled sand and other sundries, the filter screen can be conveniently installed in the drain hole of the bridge through the hopper-shaped design of the filter screen hopper. Rainwater can still be drained through the round filter holes in the periphery of the filter screen barrel and the filter screen hopper, regular cleaning is combined, the water drainage holes are effectively prevented from being blocked, water accumulation on the bridge floor is effectively prevented, and then the drainage pipe is prevented from being damaged in the cleaning process.

The utility model discloses a differential oil seal plugging frock orientation positioning structure, including guide post, the left side of guide post is provided with recess, the recess is cylindrical. The utility model discloses adopt the recess of cylindrical with inner spline who sets up in the left side of guide post, can with the accurate cooperation of differential half axle's outer spline, realize the stable connection of guide post and differential, ensure the integral positioning accuracy. The movable frame in the sliding groove cooperates with the threaded rod, can move steadily through the rotation handle driving sleeve and oil seal assembly pressure ring, make oil seal even stress in the installation process, effectively avoid the damage or deformation of oil seal in traditional installation mode because of uneven stress, the lamination design of guide post and oil seal assembly pressure ring further guarantees the coaxial degree of oil seal installation, improves the plugging effect and installation quality, reduces the subsequent problem of installation deviation, and the device has the advantages of accurate positioning, good plugging effect and convenient to use.

The utility model relates to the technical field of sealing gasket, especially to a double-layer composite sealing gasket, which comprises a metal ring, an annular cavity is arranged on the inner side of the metal ring, a rubber ring is fixed in the annular cavity of the metal ring, an annular deep groove and an annular shallow groove are arranged on the inner circumferential surface of the rubber ring, the annular deep groove and the annular shallow groove are connected through at least one sawtooth groove, the depth of the groove bottom of the sawtooth groove gradually decreases from the annular deep groove to the annular shallow groove, compared with the prior art, the composite structure of the metal ring and the rubber ring, combined with the unique annular deep groove, annular shallow groove and sawtooth groove on the inner circumferential surface of the rubber ring, can effectively improve the sealing performance of the sealing gasket, the annular deep groove and the annular shallow groove can form multiple sealing lines during the sealing process, and the blocking ability of the fluid is enhanced, the uniform distribution of pressure is facilitated by the through design of the sawtooth groove, stress concentration is reduced, and the pressure resistance and wear resistance of the sealing gasket are improved.

The utility model relates to the technical field of valve paint spraying and drying, in particular to valve paint spraying and drying equipment which comprises a drying machine, a gas transmission machine and a blocking device, the gas transmission machine is fixedly connected with the top end of the drying machine, and the blocking device is arranged on the surface of the drying machine and comprises a supporting rod which is fixedly connected with the surface of the drying machine. The supporting rod is located on one side of the gas transmission machine, and a rotating plate is rotationally connected to the surface of the supporting rod and located on one side of the drying machine. According to the valve paint spraying and drying equipment, by arranging the blocking device, loss of flying paint and heat is effectively blocked, when the valve paint spraying and drying equipment is used, the device is used, the baffle is rotated, the situation that dripping paint is blown out of the equipment when the valve paint spraying and drying equipment dries materials is avoided, and the practicability of the valve paint spraying and drying equipment is improved; the auxiliary performance of the valve paint spraying and drying equipment is improved, the blocking performance of the valve paint spraying and drying equipment is improved, and the working efficiency of the valve paint spraying and drying equipment is improved.

The utility model discloses a kind of refining machine oil agent circulation systems for fiber production involve fiber production technical field, including refiner, oil agent circulation tank and membrane filtration device, the bottom of the refiner is provided with liquid collecting tank, and the circulating liquid of liquid collecting tank is connected with oil agent circulation tank, and oil agent circulation tank is connected with membrane filtration device and oiling device respectively, and the circulating liquid of oil agent outlet of membrane filtration device is connected with oil agent circulation tank, the refining machine oil agent circulation system for fiber production is also provided with external processor, liquid level transmitter is arranged in the oil agent circulation tank, and oil agent circulation pump is arranged in the liquid outlet of oil agent circulation tank, and solenoid valve I is arranged in the inlet of membrane filtration device;By optimizing oil agent process, improve fiber oiling rate uniformity, make fiber physical property more stable, product strength and elongation rate variation coefficient reduce, significantly improve product quality.Product quality improvement helps company to develop high-end market, improve product added value, enhance market competitiveness.

The present application belongs to the field of oil and gas field development, and particularly relates to a nitrogen foam flooding method for fractured shale oil reservoirs; it solves the problems of long production cycle and difficult matrix production of current foam flooding technology; the technical scheme is: through physical simulation experiment, reservoir core, crude oil and formation water are obtained; first, wettability reversal experiment is carried out to determine the optimal effective time of wettability reversal agent, and imbibition experiment is carried out to determine the optimal well shut-in time; after establishing the initial oil saturation of the core, formation water flooding and foam flooding experiments are carried out in turn; cumulative oil production is recorded and oil displacement efficiency is calculated; finally, staged foam flooding experiment is carried out, and oil displacement efficiency is also calculated; after the experiment, the curves of oil displacement efficiency and time change of staged foam flooding, foam flooding and formation water flooding are compared and analyzed; the results show that the final oil displacement efficiency of staged foam flooding is the highest; the new method can significantly shorten the production lag period and improve the final oil displacement efficiency.

The invention relates to a double-end tool magazine machine, and relates to the technical field of machine tools, the double-end tool magazine machine comprises a machine body, two main shafts, a tool magazine and two plugging devices, two tool changing openings are formed in the tool magazine in a spaced mode, and each plugging device comprises a plugging door which is arranged on the tool magazine in a sliding mode and used for plugging or opening the tool changing openings; the moving block is arranged on the tool magazine in a sliding mode in the direction opposite to the sliding direction of the blocking door. The air injection mechanism is arranged on the moving block; the driving mechanism is used for driving the blocking door and the moving block to move. The driving mechanism starts and drives the blocking door to move to open the tool changing opening, the air injection mechanism is close to the tool changing opening, the air injection mechanism injects air to prevent impurities, cooling liquid and the like on the outer side of the tool magazine from entering the inner side of the tool magazine, the risk that the impurities and the cooling liquid enter the tool magazine is reduced, and the stability and the service life of a machine tool during operation are improved.