57results about How to "Reduce friction coefficient" patented technology

The invention provides water-based drilling fluid for stabilizing shale. The drilling fluid is formed by mixing sodium-based bentonite, a shale inhibitor, a tackifier, a flow-pattern adjusting agent, a filtrate reducer, a high-temperature-resisting processing agent, a bridging agent, bridging particle and an anti-collapse agent. Calculated by the addition quantity in every 100 parts of water, the water-based drilling fluid comprises the following components in parts by mass: 5 parts of sodium-based bentonite, 1.5 to 1.8 parts of shale inhibitor, 0.5 to 0.7 part of tackifier, 0.1 to 0.2 part of flow-pattern adjusting agent, 0.7 to 0.9 part of filtrate reducer, 2.3 to 2.5 parts of high-temperature-resisting processing agent, 9.33 to 10.67 parts of bridging agent, 1.8 to 2.2 parts of bridging particle and 1.1 to 1.3 parts of anti-collapse agent. The drilling fluid is good in rheological property, filtrate reduction property and lubricating property and strong in inhabitation property, so that the requirement of the shale gas horizontal well drilling cuttings carrying and wall stability requirement can be met, and the probability of drilling seizure can be reduced.

The invention relates to a temperature-resistance drilling fluid drill-feeding plugging agent and its preparation method, the drill-feeding plugging agent comprises the following components by weight: 30-80 parts of vegetable fiber, 10-40 parts of mineral fiber, 10-40 parts of fruit shell, 0-10 parts of powdered steatile, and 3-10 parts of silicon-based gel deformation particles. The silicon-based gel deformation particles enable emulsification and dispersion of 1.4-2.5 parts of vinyltriethoxysilane monomer according to weight to an aqueous solution composed of 18-24 parts of acrylamide, 0.0025-0.005 parts of N,N'-methylene bisacrylamide, 0.7-1.25 parts of OP-10 and 0.1-0.17 parts of sodium dodecyl benzene sulfonate, 0.003 parts of disodium ethylene diamine tetraacetate, 0.009-0.12 parts of ammonium persulfate and 0.009-0.012 parts of sodium bisulfate, a process of micellar copolymerization is carried out, a polymer is dried, granulated and crushed to obtain the silicon-based gel deformation particles with average particle size of 80-200 meshes; easy-leakage highly-permeable stratum and micro crack are effectively plugged, rheological parameter of the drilling fluid is not influenced, frictional resistance coefficient of the drilling fluid is reduced, a storage layer is protected, and the drill-feeding plugging agent is suitable for plugging the easy-leakage stratum and the storage layer.

The invention discloses a seawater silicate drilling fluid which comprises fresh water bentonite slurry 25 parts, seawater 75 parts, filtration-loss-reducing agent 2.0 to 5.0 parts, potassium chloride 5 to 7 parts, lubricant 1 to 2 parts, stabilizer 2 to 4 parts, and weighting agent 65 to 70 parts. The drilling fluid has the advantages of (1) good fluidity; (2) good wall building property, low HTHP filtration loss equal to or less than 15 ml, and thin mud cake; (3) high contamination resistance and (3) high poor soil invasion resistance (up to 15%); (4) good inhibition and large cuttings roller recovery larger than 85%; and (5) high lubricity and low friction coefficient.

The invention discloses a construction method of a low-clearance swing bridge across an operational line. The construction method comprises the steps of preparing for swing, installing and constructing a swing structure by virtue of the techniques of step-by-step installation and multiple pouring, performing beam body construction, performing a balance weighing test and trial swing construction, allowing formal swing to be in place, and using a steel shell method to perform the construction of an ultra-low-clearance closure segment. The construction method of the low-clearance swing bridge across the operational line adopts a spherical hinge multistep installation precise control technique, a balance weighing test pre-weighting technique, a swing parameter correction and precise positioning technique and a closure segment ultra-low-clearance steel shell construction technique to meet specifications, precision of design drawings and quality requirements, and leads the way in swing spherical hinge installation precision, swing balance stability and precision control. The construction method solves the difficult problem of insufficient clearance under the bottom of the bridge, and ensures the safety of the operational line.

The invention relates to a preparation method of a concrete long-acting mould release agent for preventing or reducing mutual bonding between concrete and the surface of a die plate. The method comprises two preparations: a die plate paint host crystal and an adhesive; wherein the die plate paint host crystal is prepared by processes such as mixing and filtering of epoxy resin or unsaturated polyester resin or acrylic resin, solvent and additive, while the adhesive is prepared by processes such as mixing and filtering of organic acid, in organic acid, inorganic salt, additive and water. In practical utilization, first, the surface of the die plate is wiped twice by the adhesive; then the die plate paint host crystal is brushed on the die plate for once to twice when liquid on the die plate is dried; afterwards a layer of smooth surface with smooth touch feel and sliding characteristics can be formed on the surface of the die plate when the die plate is solidified and dried. The substrate material processed by the mould release agent enjoys increased cohesion with the paint film, does not come off easily and enables the die plate to be repeatedly used.

The invention discloses a non-fluorescence lubricant for water-base drilling fluid, which relates to the technical field of lubricants for water-base drilling fluid. The lubri cant is prepared from the following raw materials in percentage by weight: 30 to 50 percent of industrial castor oil, rapeseed oil residue and industrial soybean oil, 0.6 to 1.0 percent of sodium pyrosulfite, 2 to 3 percentof nonyl phenol polyoxyethylene ether, 0.02 to 0.04 percent of antioxidant 501, 1.0 to 1.2 percent of caustic soda NaOH, and the balance of water. The lubricant has no adverse effects on geological logging, cannot cause no real cuttings to be got in the logging process, and cannot affect the discovery of new hydrocarbon reservoirs.

The invention provides an oil-base illegal cooking oil lubricant for drilling fluids, which comprises the following components in percentage by weight: 90-95% of illegal cooking oil, 0.1-0.15% of preservative, 0.5-1% of antioxidant, 5-7% of extreme-pressure additive, 0.1-0.15% of ultraviolet absorbent and 0.5-1% of pour-point depressant. The oil-base illegal cooking oil lubricant for drilling fluids is developed by using the illegal cooking oil as the base raw oil. The lubricant has the advantages of favorable water solubility, high stability, low fluorescence and no influence on geological logging, effectively solves the problem that the lubrication lowers the torque and friction resistance in the horizontal well drilling process, provides a brand-new way for recovery and reutilization of illegal cooking oil, has wide and profound social benefits, and has wide prospects for popularization and application.

The ultrahigh molecular weight polyethylene composition capable of being extrusion molded is prepared with ultrahigh molecular weight polyethylene in 10-30 weight portions, composite machining assistant in 1-5 weight portions, antioxidant in 0.1-1 weight portion, nucleating agent in 0.1-1 weight portion, and lubricating agent in 0.1-1 weight portion, and through mixing inside a high speed mixer at 70-90 deg.c for 2-5 min and extruding in a double screw extruder at 170-220 deg.c. The ultrahigh molecular weight polyethylene composition has improved machining performance.

The invention relates to a biomimetic liquid lubricating agent for drilling fluid and a preparation method thereof. The biomimetic liquid lubricating agent is prepared from the following raw materials including oleic acid, emulsifiers, glycerol, epoxy propane and antifoaming agents, wherein the emulsifiers are one or several materials selected from triethanolamine, aluminum stearate and span-80. The preparation method comprises the following technical steps of weight the raw materials of the oleic acid, the emulsifiers, the glycerol and the epoxy propane; adding the raw materials into a reaction kettle so that the raw materials are sufficiently mixed, and a mixed material is obtained; performing an esterification process on the mixed material at the esterification temperature of 200 to 250 DEG C for the esterification time being 1 to 3h; performing cooling to obtain an esterification product; performing an emulsification process on the esterification product at the emulsification temperature of 80 to 100 DEG C for the emulsification time being 1 to 2h; lowering the temperature of a product after completing the emulsification process; adding the antifoaming agents so that the materials are sufficiently and uniformly mixed; discharging the materials after the temperature is lowered to room temperature. The biomimetic liquid lubricating agent can resist high temperature being 200 DEG C or higher; the friction coefficient of the drilling fluid can be reduced; the adhesion coefficient of the drilling fluid can also be reduced; the fluorescence grade is low.

The invention relates to a prestressed glass fiber reinforced plastic (GFRP) reinforced concrete pipe with a plastic inner bush, a mouthing and a socket, which comprises the mouthing, the socket, a concrete wick and a prestressed steel wire. The mouthing and the socket are coaxially and fixedly arranged on the two ends of the concrete wick respectively and the prestressed steel wire twines on the outer wall of the concrete wick. The concrete pipe is characterized in that: the outer wall of the concrete wick is coaxially and fixedly provided with a GFRP jacket and the inner wall of the concrete wick is coaxially and fixedly provided with the plastic inner bush. The reinforced concrete pipe has simple integral structure, scientific and reasonable design, relatively good durability, noncorrosibility, impermeability, uneven settling resistance, small friction resistance coefficient of the inner wall of the pipe, low cost of raw materials and construction, simple construction process and convenient maintenance and is a relatively highly innovative prestressed glass fiber reinforced plastic (GFRP) reinforced concrete pipe with the plastic inner bush, the mouthing and the socket.

The invention provides a deep geothermal exploitation method based on a carbon dioxide medium. The deep geothermal exploitation method comprises the following steps that S1, an injection well and a production well are drilled; S2, the injection well and the production well are fractured; S3, CO2 fracturing is carried out; S4, CO2 heat energy utilization is carried out; S5, cyclic utilization of CO2 is carried out; and S6, CO2 storage is carried out. The method is advantaged in that CO2 is adopted as a fracturing medium and a heat exchange medium, pressure loss and fracturing difficulty in the flowing process of fracturing fluid can be reduced by taking CO2 as the fracturing medium, the heat exchange area of a heat storage stratum can be increased, intercommunication of a micro-fracture network system is promoted, and the reservoir transformation time is saved; meanwhile, CO2 serves as a heat exchange medium, the heat extraction capacity of a heat storage stratum can be improved, a large amount of CO2 can be stored in the underground deep part in the heat exchange process and after heat exchange, and carbon peak reaching and carbon neutralization can be achieved easily.

The invention provides a steel anchor beam without corbels. The steel anchor beam without the corbels comprises end supports (1), a middle balance beam (2) and stay cable anchoring heads (3). The end supports (1) are connected with tower walls (4) through shear studs (15) or PBL shear keys (16), and the end supports (1) are connected with a web (5) and top plates (6) of the middle balance beam (2) through high-strength bolts. The stay cable anchoring heads (3) are symmetrically arranged on a bottom plate (7) located on the inner sides of the two ends of the web (5) of the middle balance beam (2), and under-anchor #-shaped plates (10) of the stay cable anchoring heads (3) are connected with the web (5), the top plates (6) and the bottom plate (7) of the middle balance beam (2). The steel anchor beam without the corbels has the advantages that the overall height of the steel anchor beam structure is reduced; when a stay cable is tensioned, the middle balance beam slides on connecting bolt hole positions in a self-adaptive mode in the cable force direction, constraint in the horizontal direction of the middle balance beam is released, so that deformation is generated, and the middle balance beam bears the horizontal component balance part of the stay cable. According to the steel anchor beam without the corbels, it is guaranteed that the steel anchor beam bears the most horizontal component of the stay cable, the problem of height limit of the steel anchor beam is solved, meanwhile steel consumption is reduced, and therefore the application range of the steel anchor beam is widened.

The invention relates to a friction material, a composite brake shoe and a preparation method, and relates to the technical field of brake shoe preparation. The friction material comprises the following raw materials in parts by weight: 25-30 parts of steel fibers, 5-8 parts of boron-modified phenolic resin, 10-15 parts of phenolic resin, 3-5 parts of nitrile rubber, 10-15 parts of graphite, 5-10parts of glass fibers, 5-10 parts of basalt fibers, 2-5 parts of barite, 1-2 parts of aramid fibers, 15-20 parts of calcium hydroxide, 1-2 parts of silicon carbide and 2-5 parts of aluminum oxide. With the proportion of the metal content in the formula and the synergistic effect of the raw materials, the hardness of the friction material is increased, the friction coefficient is reduced, the elasticity modulus is increased and the heat resistance is enhanced. The brake shoe prepared from the friction material has the characteristics of good heat resistance, low and stable friction coefficientand good impact resistance effect and can prevent transfer, adhesion, damage and scratch of the base material during braking of the brake shoe and can overcome the defects of brake shoe chipping / cracking, metal inserts and the like generated during frequent braking of large-scale road maintenance machinery.

The invention provides water-based drilling fluid for stabilizing shale. The drilling fluid is formed by mixing sodium-based bentonite, a shale inhibitor, a tackifier, a flow-pattern adjusting agent, a filtrate reducer, a high-temperature-resisting processing agent, a bridging agent, bridging particle and an anti-collapse agent. Calculated by the addition quantity in every 100 parts of water, the water-based drilling fluid comprises the following components in parts by mass: 5 parts of sodium-based bentonite, 1.5 to 1.8 parts of shale inhibitor, 0.5 to 0.7 part of tackifier, 0.1 to 0.2 part of flow-pattern adjusting agent, 0.7 to 0.9 part of filtrate reducer, 2.3 to 2.5 parts of high-temperature-resisting processing agent, 9.33 to 10.67 parts of bridging agent, 1.8 to 2.2 parts of bridging particle and 1.1 to 1.3 parts of anti-collapse agent. The drilling fluid is good in rheological property, filtrate reduction property and lubricating property and strong in inhabitation property, so that the requirement of the shale gas horizontal well drilling cuttings carrying and wall stability requirement can be met, and the probability of drilling seizure can be reduced.

The invention relates to an amphiphilic bottle brush type polymer, a preparation method of the amphiphilic bottle brush type polymer, a drilling fluid additive and application of the drilling fluid additive. The amphiphilic bottle brush type polymer comprises a polyvinyl alcohol main chain, a polyphenyl ether side chain brush section and a polyethylene glycol side chain brush section. The drillingfluid additive comprises the amphiphilic bottle brush type polymer, carboxymethyl chitosan, long-chain fatty alcohol and water. The drilling fluid additive can remarkably reduce the friction coefficient of the water-based drilling fluid, even can reduce the friction coefficient to a super-lubricating range below 0.03, and has a relatively good application prospect.

The cation emulsified asphalt as collapse-preventing agent for well drilling fluid consists of asphalt 20-40wt%, potassium hydroxide 4-9 wt%, ammonium cetyl trimethyl chloride 1-3wt%, industrial assistant oil 15-30wt%, acrylic acid monomer 5-8wt%, deionized water 15-30wt%, dibenzoyl peroxide 0.1-0.2wt%, ammonium epoxypropyl trimethyl chloride 5-8wt% and sorbitan monooleate. The preparation process of the cation emulsified asphalt as collapse-preventing agent includes the steps of preparation of polymer emulsion, preparation of cation asphalt emulsion and compounding of polymer-cation asphalt emulsion. The collapse-preventing agent can be compounded well to cation polymer well drilling fluid to form stable well drilling fluid with obviously improved performance.

The invention relates to a measuring system for internal displacement of a rock and earth mass. The measuring system comprises a measuring unit, wherein the measuring unit sends a signal to a data acquisition unit connected with terminal equipment, and comprises an anchoring head; the anchoring head is connected with a grating scale through an alloy wire; and the grating scale is connected with the data acquisition unit. The anchoring head buried in a rock and soil medium is small in size and light in weight, is closely jointed with the rock and earth medium, and generates same displacement with a surrounding medium in the same direction; the alloy wire is small in deformation per se, and has a very small coefficient of friction resistance with the medium and a low disturbance to the nature of the rock and earth mass, and the obtained displacement result is closer to the actual value; the minimal measuring unit of the grating scale can reach micrometer level; the data acquisition unit and terminal equipment can automatically acquire, transmit and record the required data; and the system can realize the low-disturbance and high-precision measuring of the internal displacement of the rock and earth mass, and the automatic acquisition, transmission and record of data.

The invention discloses a preparation method of drilling fluid lubricants, and belongs to the technical field of drilling fluid additive preparation. The method includes the steps of firstly, stirring swill-cooked dirty oil and dichloromethane to react, distilling, and heating the obtained resultant and propylene oxide to react; secondly, adding boric acid, carbon tetrachloride and the like to heat and undergo reflux reaction, and filtering to collect filtrate for distilling to obtain modifiers; thirdly, heating and filtering waste rapeseed oil and frying oil and lard, and collecting filtrate to react with zeolite, citric acid and the like; finally, mixing the obtained modified mixed oil with the modifiers, monoethanolamine of coconut oil fatty acid and the like, and then obtaining the drilling fluid lubricants. The drilling fluid lubricants prepared by the preparation method has the advantages of having good functions of anti-high temperature, aging resistance and comprehensive lubricating properties, and being difficult to be decomposed and lose efficacy under high temperature environment, so as to not cause foaming phenomenon of drilling fluid.

The invention relates to a microemulsion type lubricant used for a drilling fluid and a preparing method thereof. The lubricant includes mineral oil or refined gutter oil, a surfactant, an inorganic salt, n-butanol and water. The method includes firstly adding water into a reaction kettle, slowly adding the surfactant into the reaction kettle with the stirring speed being 2000-3000 r / min; after the water and the surfactant are fully mixed, slowly adding the inorganic salt; after the inorganic salt is fully dissolved, adding the n-butanol and the mineral oil or refined gutter oil; and allowing the mixture to stand for 5-10 h. The lubricant and the method are advantageous in that industrial production of the lubricant can be achieved and the environment protection problem of the gutter oil is solved; the lubricant has good compatibleness with a water-based drilling fluid, has low influences on rheological properties of the drilling fluid, and can effectively reduce the frictional resistance coefficient and the mud cake adhesion coefficient; and by adding the lubricant into the drilling fluid, the mud cake adhesion coefficient can be effectively reduced. Experiment measurement shows that the highest reduction rate of the mud cake adhesion coefficient is 52.3%.

The invention provides an offset-bow centralizer device. The offset-bow centralizer device comprises a centralizer body, wherein stop rings are arranged at two ends of the centralizer body, the centralizer body is in a hollow structure, and comprises a plurality of support ribs arranged uniformly circumferentially, a gap is formed between every two adjacent support ribs, the support ribs are in a structure of asymmetrical offset bow, and bow parts of every two adjacent asymmetrical offset bow structures are staggered. An offset-bow support device is added to a traditional centralizer, welding points are reduced, and an overall structure is adopted, so that the centralizer device has a high casing centralizing effect and large annulus flow area, and displacement efficiency of circulating drilling fluid can be effectively improved; when a casing enters an inclined shaft section or a horizontal section, a casing body cannot be closely attached to the bottom of a borehole, the centralizing effect is good, a friction area is reduced, and accordingly, a frictional resistance coefficient between the casing and the well wall is reduced, frictional resistance is greatly reduced, and the casing is fed into a shaft smoothly.

The invention discloses a stainless steel cold rolling plate machining method. The method comprises the steps of firstly, raw material treatment, secondly, rolling, thirdly, annealing and acid pickling, fourthly grinding and forming and fifthly electrolytic passivation. A stainless steel cold rolling plate manufactured through the machining method is flat in plate face and uniform in color, the surface appearance quality is greatly improved, through the rolling method, the friction coefficient of the cold rolling deformation area contact surface of the stainless steel plate can be reduced, and therefore the cold rolling pressure is reduced, cold rolling production efficiency is improved, and a rolled part easily extends.

The invention discloses an emulsified residual oil type lubricant for a drilling fluid and a production process thereof. The emulsified residual oil type lubricant for the drilling fluid comprises the following components in parts by weight: 40 to 60 parts of residual oil, 10 to 20 parts of No.15 technical white oil, 10 to 20 parts of paraffin, 20 to 30 parts of an anti-freezing agent, 1 to 5 parts of sorbitan oleate and 1 to 5 parts of sulfonic acid. The emulsified residual oil type lubricant prepared by adopting the production process is used in the drilling fluid and has the advantages of low friction resistance, good immersion effect and high anti-collapse performance; and by adopting the emulsified residual oil-type lubricant, the quality of mud cakes can be effectively improved.

The invention discloses a machining method for a high-strength and high-abrasion-resistance stainless steel cold-rolled sheet. The machining method comprises the first step of raw material treatment, the second step of rolling, the third step of annealing and acid pickling, the fourth step of polishing and grinding and the fifth step of electrolysis passivation. The stainless steel cold-rolled sheet manufactured through the machining method is high in mechanical strength, good in abrasion resistance, strong acid and strong alkalinity resistance, high-temperature stability and machining performance, and the like. The sheet face is flat, colors are uniform, the surface appearance quality is greatly improved, more uniformity is achieved through electrolysis passivation, the density of a passivation layer is high, and the anti-corrosion capability of the stainless steel cold-rolled sheet can be greatly improved; and the surface can prevent oil dirt, and the dirt preventing and fingerprint pressing preventing capability of the surface of the stainless steel cold-rolled sheet is improved.

The invention relates to a preparation method of a filtration control lubricant used by a high-temperature horizontal well and directional well. In a reaction container, a glycan drilling fluid treatment agent is mixed with water, and then sodium benzoate and hexamethylenetetramine or paraformaldehyde are added; then a plant polyphenol material and lignosulfonate are added into a mixture in the reaction container; finally, a mixture in the reaction container is subjected to vacuum drying and grinding to obtain the filtration control lubricant used by the high-temperature horizontal well and directional well. Vegetable gum adopted in the preparation method is heteropolysaccharide and has a branch structure, so that the filtration control lubricant has a good lubricating effect, and a coefficient of friction resistance of a mud cake is obviously reduced; in addition, the plant polyphenol material is used as an additive of the glycan drilling fluid treatment agent, so that the structure of glycan can be stabilized by intermolecular forces of a hydrogen bond and the like, the glycan drilling fluid treatment agent is difficult to degrade and decompose when the filtration control lubricant is used at a high temperature, and temperature resistance can be improved to 150 DEG C or more.

The invention relates to a temperature-resistance drilling fluid drill-feeding plugging agent and its preparation method, the drill-feeding plugging agent comprises the following components by weight: 30-80 parts of vegetable fiber, 10-40 parts of mineral fiber, 10-40 parts of fruit shell, 0-10 parts of powdered steatile, and 3-10 parts of silicon-based gel deformation particles. The silicon-based gel deformation particles enable emulsification and dispersion of 1.4-2.5 parts of vinyltriethoxysilane monomer according to weight to an aqueous solution composed of 18-24 parts of acrylamide, 0.0025-0.005 parts of N,N'-methylene bisacrylamide, 0.7-1.25 parts of OP-10 and 0.1-0.17 parts of sodium dodecyl benzene sulfonate, 0.003 parts of disodium ethylene diamine tetraacetate, 0.009-0.12 parts of ammonium persulfate and 0.009-0.012 parts of sodium bisulfate, a process of micellar copolymerization is carried out, a polymer is dried, granulated and crushed to obtain the silicon-based gel deformation particles with average particle size of 80-200 meshes; easy-leakage highly-permeable stratum and micro crack are effectively plugged, rheological parameter of the drilling fluid is not influenced, frictional resistance coefficient of the drilling fluid is reduced, a storage layer is protected, and the drill-feeding plugging agent is suitable for plugging the easy-leakage stratum and the storage layer.

The invention discloses a seawater silicate drilling fluid which comprises fresh water bentonite slurry 25 parts, seawater 75 parts, filtration-loss-reducing agent 2.0 to 5.0 parts, potassium chloride 5 to 7 parts, lubricant 1 to 2 parts, stabilizer 2 to 4 parts, and weighting agent 65 to 70 parts. The drilling fluid has the advantages of (1) good fluidity; (2) good wall building property, low HTHP filtration loss equal to or less than 15 ml, and thin mud cake; (3) high contamination resistance and (3) high poor soil invasion resistance (up to 15%); (4) good inhibition and large cuttings roller recovery larger than 85%; and (5) high lubricity and low friction coefficient.

The invention discloses an anti-impact modified polyvinyl chloride water and sewage drainage pipe. The anti-impact modified polyvinyl chloride water and sewage drainage pipe comprises, by weight, 60-80 parts of PVC, 10-30 parts of anti-impact modifiers, 10-30 parts of toughening modifiers, 3-6 parts of modifiers, 1-3 parts of lubricants, 2-5 parts of coupling agents, 1-5 parts of carbon fibers and0-15 parts of fillers. A processing method includes heating and stirring the PVC for 2 minutes, adding stabilizers, continuing to stir, increasing the mixing temperature to 95-100 DEG C, adding otherauxiliaries (the carbon fibers and the fillers are subjected to surface treatment by the coupling agents), performing mixing and stirring, stopping stirring when the mixing temperature reaches 120-130 DEG C, feeding the mixtures to a cooling stirrer to be stirred and cooled to 40-45 DEG C, discharging the mixtures, and feeding the mixtures to a next step for 4-6 hours of processing. The obtainedpipe has high impact strength, temperature resistance, corrosion resistance and aging resistance.

The invention belongs to the technical field of oil production engineering. An acid and alkali resistant rapid mixing liquid application sample separation device, which comprises a feeding part, a mixing part and a liquid storage sample separation part; the feeding part is used for containing a solution to be mixed; the mixing part is arranged at the bottom of the feeding part and is used for uniformly mixing a to-be-mixed solution; the liquid storage and sample separation part is arranged at the bottom of the mixing part and is used for storing the mixed solution and sampling in groups. The invention further discloses an acid and alkali resistant rapid mixing liquid application sample separation method. The problems of acid-base solution mixing and sample separation can be solved, and static liquid mixing and sample separation are achieved through fluid mechanics. The static liquid mixing and sample separating device is reasonable in overall structural design, can be applied to strongacid or strong base or other liquid with the viscosity smaller than 200 mPa.s, is internally provided with no electronic driving assembly, and achieves static liquid mixing and sample separating by means of the hydromechanics principle.

The invention relates to a plastic liner protruding-type socket steel ring concrete top tube comprising a steel bell, a cylindrical reinforcement frame tube cage and a concrete tube core. The steel bell is fixedly mounted at one end of the concrete tube core, and the cylindrical reinforcement frame tube cage is coaxially embedded in the concrete tube core; a socket steel ring is coaxially fixedly mounted on the outer wall of the socket end of the concrete tube core, the outer wall diameter of the socket steel ring is larger than the socket outer wall diameter of the concrete tube core so as to radially form a groove between a socket of the concrete tube core and the concrete tube core, and a plastic liner cylinder is coaxially fixedly mounted on the inner wall of the concrete tube core. The plastic liner protruding-type socket steel ring concrete top tube has simple structure, scientific and reasonable design, firm socket, better impermeability and corrosion resistance, lower raw material cost and small inside tube wall coefficient of friction resistance.

The invention discloses a lead wire storage device of an electrocardiogram monitor. The lead wire storage device structurally comprises a lead wire storage groove, a rear cover frame groove, an integrated electric plate seat, a button strip plate, a display screen and a start-stop button seat. According to the lead wire storage device, the lead wire storage groove is matched with the integrated electric plate seat, and the integrated electric plate seat is used for switching on a lead wire to be adaptively inserted into a storage inner groove to achieve use operation of the electrocardiogram monitor; after standing, the lead wire is erected, and the arc buckle soft cushion wrapping clamping end of an arc buckle soft cushion seat is attached to a ball cap, so that the effect of reducing theabrasion coefficient by point contact type rolling friction is conveniently achieved; and the subsequent lead wire end is matched with a wire end clamping frame to achieve gripping, and an end cap issubjected to plate pressing, reverse buckling and sliding pressing operation, so that the effect of storing the lead wire by a trigger switch is achieved, the lead wire maintenance degree and the equipment storage efficiency of the electrocardiogram monitor equipment are improved, and the light carrying and assembling efficiency of the electrocardiogram monitor is improved.