56results about How to "Good field application effect" patented technology

The invention provides an acidic soil conditioner, and a preparation method and application thereof. The acidic soil conditioner comprises the following components in part by weight: 4 to 8 parts of composite bacterial agent, 80 to 90 parts of acid adjusting factor, 3 to 7 parts of chelate and 2 to 6 parts of organic matter. The acidic soil conditioner adjusts the pH value of soil, promotes formation of soil aggregate structures, improves the physical property of the soil, creates a good ecological environment for the growth of plants, increases organic matters, calcium, magnesium and silicon and the activities thereof, promotes healthy growth of crops, enhances stress resistance and prevents diseases and pests. By adoption of the composite bacterial agent, the constitution of a microflora of the soil can be improved, the microbial activity of the rhizosphere of the crops is enhanced, mineralization of organic pollutants is accelerated, growth of the plants is promoted, and absorption of degradation products and bioremediation of the polluted soil are accelerated. The acidic soil conditioner has no toxicity, residues and pollution, accords with the development tendency of organic pollution-free agriculture and has great popularization and application values.

The invention provides a soluble straw decomposing agent, its preparation method and application. The soluble straw decomposing agent comprises by weight: 10-20 parts of a composite bacterial agent, 20-50 parts of nutrients, 2-5 parts of a plant source emulsification penetrant, and 25-68 parts of a soluble carrier. The composite bacterial agent contains cellulose decomposition bacteria, protein decomposition bacteria, and nutrient bio-control growth-promoting bacteria. The invention also provides a preparation method of the above soluble straw decomposing agent. The soluble straw decomposing agent provided in the invention is in a powder form and is fully soluble in water, and also can be applied through both scattering and spraying, thus being suitable for mechanized operation. The soluble straw decomposing agent provided in the invention can substantially speed up degradation of a plurality of crop straw, promote crop growth, and prevent a lot of crop diseases and pests.

The invention provides harmless solid waste high-performance concrete. The strength grade of the concrete is C20-C80 grade; the volume-weight of the harmless solid waste high-performance concrete is 2300-2600kg / m<3>; and the harmless solid waste high-performance concrete comprises the following components in a set ratio: water, cement, natural coarse aggregate, harmless solid waste, natural fine aggregate, 0-5m harmless solid waste, a mineral admixture and a water reducing gent. The harmless solid wastes (recycled aggregate, industrial derivatives and the like) are applied to concrete, so that the effective utilization level of the solid wastes can be improved. The required work performance, strength, requirements, endurance quality and the like of the concrete can be ensured; and the harmless solid waste high-performance concrete can be suitable for concrete structures, reinforced concrete structures and the like, so that the targets of recycling and utilizing of the harmless solid wastes are reached.

The invention relates to a numerical analysis method for dense gas multi-section volume fracturing horizontal well, comprising the following steps: step 1, establishing a geological structure model ofthe network fracture of the multi-section volume fracturing horizontal well; 2, establishing a heterogeneous geological body of fractured horizontal well network fracture; 3, establish a well test mathematical model of a compact gas multi-stage fracturing horizontal well base on that fracture network form; 4, carrying out numerical solution on a network fractured horizontal well test model by using a mixed element finite element method; 5, generating a multi-section volume fracturing horizontal well actual t well curve according to that well test data, and fitting the theoretical curve solvedby the model in the step 4 with the actual measurement curve to obtain the well test interpretation parameters. This method is of great significance to improve the interpretation accuracy of volume fracturing horizontal wells, to obtain the parameters of volume fracturing network and to evaluate the effect of volume fracturing. The invention has the characteristics of good well test curve fitting, accurate interpretation result, strong practicability and the like.

The invention provides a fertilizer for cultivation of tobacco. The fertilizer consists of the components by weight as follows: 0.5-1.5 parts of a composite microbial agent, 3-7 parts of an activating agent, 3-7 parts of binder, and 86-92 parts of nitrogen, phosphorus and potassium fertilizer. The effective components of the composite microbial agent are Bacillus licheniformis, Bacillus pumilus, Brevibacillus laterosporus, Bacillus megatherium and Silicate bacteria. The invention further provides a preparation method and an application of the fertilizer. The product provided by the invention can remarkably improve crumb-structure of soil for cultivation of tobacco, and microflora distribution and micro-environment of the soil. A plenty of derivatives are generated, thereby chelating or blocking damage of heavy metals, and absorption and assimilation of tobacco to nutrient elements are improved, the drought resisting and disease resisting abilities of tobacco are enhanced, damage of diseases and insects caused by continuous cropping of tobacco in successive years are effectively prevented, and in particular, tobacco mosaic virus and brown spot disease are specially prevented and treated. According to the invention, the raw materials are low in cost and easy to obtain and the preparation and using methods are simple and easy to operate.

The invention discloses a self-learning method for improving a forecasting precision of an overall length coiling temperature of strip steel, belonging to the field of automatic control technologies of hot-rolled strip steels. The self-learning method is mainly characterized by comprising the following steps of: 1) collecting control parameters of each section of the strip steel in a coiling temperature control process; 2), determining the number of lag sections after the strip steel is rolled; 3) figuring up self-learning lag factors between the sections; and 4) comprehensively considering self-learning coefficients of the strip steel between the sections, self-learning coefficients of the rolled strip steel between the sections and the self-learning lag factors between the sections when the coiling temperature of each section of the sequent strip steel is forecasted. The self-learning method, related by the invention, can solve the lag problem of self-learning between the sections of the strip steel well, and the forecasting precision of the coiling temperature of each section of the overall length of the strip steel is remarkably improved.

The invention discloses a non-burnt brick prepared from unwanted soil residues and a preparation method thereof. The non-burnt brick comprises, by mass, 1200 to 1500 parts of unwanted soil residues, 200 to 400 parts of cement, 10 to 30 parts of a polymerizer, 1 to 15 parts of a curing agent and 1 to 30 parts of an additive. The preparation method for the non-burnt brick comprises the following steps: drying and crushing the unwanted soil residues, then blending the crushed unwanted soil residues with the cement and the polymerizer and carrying out granulation to form stable soil particles which are used for replacing conventional sand and stone as a framework material for the non-burnt brick; and mixing the stable soil particles with the cement, the curing agent and the additive to prepare the non-burnt brick. The non-burnt brick prepared from unwanted soil residues has a strength grade of Mu5.0 to Mu30 and a softening coefficient of 80 to 98%, and the water absorption rate, durability, radioactivity and the like of the non-burnt brick meet standard requirements. The invention has the beneficial effects that unwanted soil residues are recycled; environmental pollution is reduced; natural resources are saved; production cost for constructional bricks is lowered; the preparation method is simple and convenient; and substantial social benefits and economic benefits are produced.

The invention discloses a prodenia litura gene engineering virus No.3 and a building method thereof, in particular relates to a prodenia litura gene engineering virus used for carrying out deficiency and recombination on a wild type virus (SpltMNPV II) by utilizing a gene engineering method. The genome of the virus is deficient in an egt gene, namely an ecdysteroid UDP (uridine diphosphate) glucosyltransferase gene; and at the site of the deficient egt gene, a BmKITa1 gene controlled by a wild type virus, namely an early gene-1(ie-1) starter, and a marker gene, namely an enhanced green fluorescent protein (egfp) gene, which is controlled by the wild type virus, namely a polyhedron gene (ph) starterare inserted. The prodenia litura gene engineering virus No.3 disclosed by the invention has the advantages of faster insecticidal speed, less dosage effect and better field application effect compared with the wild type virus. Compared with the prior art, the prodenia litura gene engineering virus No.3 provided by the invention has less dosage effect and lower LT50 at low dose (105 polyhydral bodies / larva).

An inertia friction welding clamping mechanism for a front drum of an engine adopts a clamping structure way of combining a mechanical and hydraulic system with low-temperature grease expanding mechanism; a tailstock clamp is used for clamping a processed part and adopts a mechanical clamping structure with an inner cone and an outer cone; in order to enhance the welding reliability, an elastic half ring is adopted at the part welding part to tighten the processed part to enhance the strength to control the part welding deformation; and a main shaft clamp adopts a low-temperature grease expanding mechanism, seals a sealing structure applying an O-shaped seal ring and a semi-circular arc-shaped seal rubber ring accordingly, and is meshed with equipment coil circuit connector correspondingly. The friction welding clamping mechanism improves the rotor connector quality and the production efficiency remarkably, ensures the processing precision of the part and the service life of the friction welding clamping mechanism, reduces the manufacturing cost of the tool, improves the tool using reliability, and meets the production filed and process requirements.

According to the technical scheme, the invention relates to a composite cellulose ether high-temperature foam stabilizer for oil extraction. The composite cellulose ether high-temperature foam stabilizer is suitable for anionic-nonionic surfactant foaming agents and comprises the following components in percentage by mass: 30-50% of high-viscosity carboxymethylcellulose (HV-CMC), 20-50% of hydroxyethyl cellulose ether (HEC), and 10-20% of hydrolyzed polyacryamide (HPAM). The composite cellulose ether high-temperature foam stabilizer for oil extraction disclosed by the invention has the beneficial effects that by compounding multiple foam stabilizers, the disadvantages of large usage amount, short half-life period and low cost when a single foam stabilizer is used under high-salinity and high-temperature conditions are made up; and during the use of the composite foam stabilizer in oil extraction of oil-water well, the composite foam stabilizer is used in combination with the anionic-nonionic surfactant foaming agents so as to achieve the advantages of good compatibility, water solubility and dispersion.

The invention relates to a baking-free antique black brick and a preparation method thereof. The baking-free antique black brick comprises a basic layer and a surface layer, wherein the basic layer iscomprises clay residues, recycled aggregates and cement; the surface layer comprises white portland cement, slag powder, recycled fine aggregates, black iron oxide and green iron oxide. The clay residues are adopted to serve as one of the production raw materials of the baking-free antique black brick, the utilization rate and the additional value of the clay residues are improved, and the utilization of building waste resources is improved; moreover, the baking-free antique black brick prepared from the method can meet various performance indexes, and is suitable for masonry engineering anddecoration engineering; the production process is simple, the disposal efficiency is high, the treatment capacity is high, the field application effect is good, and the baking-free antique black brickhas good economic benefits and social benefits.

The invention discloses an RH nitrogen-blowing alloying process capable of accurately controlling the nitrogen content of a nitrogen-containing steel grade. The RH nitrogen-blowing alloying process capable of accurately controlling the nitrogen content of the nitrogen-containing steel grade comprises the following steps: desulfurized molten iron and scrap steel are smelted in a converter, oxygen is blown from the top, and nitrogen is blown from the bottom; LF refining and RH vacuum refining are sequentially carried out on molten steel, a mechanical pump vacuum system is adopted for RH, specifically, argon / nitrogen switching is carried out on RH circulation gas, the nitrogen flow is 90-150 Nm<3> / h, the nitrogen pressure is 1.0-1.8 Mpa, RH vacuum air-pumping is carried out, the pressure is reduced to 273 Pa or below from atmospheric pressure, and RH air-pumping lasts for 5-10 min; temperature measurement and sampling are carried out, and the chemical components and the nitrogen component content of the molten steel are analyzed; the component content of the molten steel is adjusted according to the sampling analysis result, the RH vacuum degree is adjusted to 4-15 kpa, nitrogen is rapidly increased in the molten steel, and the average nitrogen increasing amount is 3.0-3.50 ppm / min; and after the molten steel meets the technical requirements of the steel grade, the RH is finished, re-pressing is carried out, a steel ladle is opened for blowing argon from the bottom, and calcium treatment in a metal calcium feeding line is carried out. According to the invention, the nitrogen content fluctuation of the molten steel can be accurately controlled to be + / -5ppm, the technical requirements of the steel grade are met, the quality of the steel grade is ensured, and the production cost is reduced.

The invention discloses a cross-linking agent (i.e., polyhydroxy phenolic high-temperature prepolymer organic cross-linking agent) for deep profile control and oil displacement for a high-temperature oil reservoir, wherein the cross-linking agent disclosed by the invention is formed by using phenol, hexamethylenetetramine, formaldehyde and a curing agent as raw materials, and performing polymerization reaction under the action of a catalyst. The cross-linking agent is mainly researched and developed aiming at a high-temperature oil reservoir (at 70-125 DEG C), and is mainly used for the technologies of deep profile control and deep fluid diversion. In a high-temperature condition, the cross-linking agent is high in the activity of reaction with polyacrylamide, low in use concentration, non-toxic and odourless, harmless for environment and workers, and easy in operation. The cross-linking agent is used in deep profile control and oil displacement construction, and is widely applied in Turpan-Hami oilfield and Jilin oilfield, and the input-output ratio achieves 1: 3.6. Via continuing research in the aspects of improving understanding for oil reservoir, optimizing the working procedures of construction and pump injection program, and controlling injection radius, the cross-linking agent can be widely applied in the aspect of high-temperature oil reservoir.

The invention belongs to the technical field of microorganism oil extraction, and particularly relates to a screening method of a microorganism long-acting activating agent for oil extraction. The screening method specifically comprises the following steps that components of the long-acting activating agent are screened under the aerobiotic and anaerobic conditions; the concentration of the long-acting activating agent is optimized; physical modeling evaluation is performed on the long-acting activating agent, wherein physical modeling evaluation comprises injectability evaluation and oil displacement efficiency evaluation; finally the oil reservoir microorganism long-acting activating agent system for oil extraction is obtained. The method is simple and high in operability and pertinency; the long-acting activating agent system obtained through the screening method not only can meet the nutrition requirements of microorganisms near a wellbore, but also can meet the nutrition requirements of microorganisms at the deep of an oil reservoir, is good in application effect and can improve the oil displacement efficiency of the microorganisms, and therefore the long-acting activating agent can be widely applied to the technical field of microorganism oil extraction.

The invention relates to the field of hydraulic sandblasting fixed-point perforation, in particular to a hydraulic sandblasting fixed-point perforation mechanical parameter calculation model. The hydraulic sandblasting fixed-point perforation mechanical parameter calculation model includes a hydraulic sandblasting fixed-point perforation casing pipe mechanical parameter calculation model, a hydraulic sandblasting fixed-point perforation cement sheath mechanical parameter calculation model, a hydraulic sandblasting fixed-point perforation formation mechanical parameter calculation model, and hydraulic sandblasting fixed-point perforation casing pipe, cement sheath and formation system energy parameter calculation models. The hydraulic sandblasting fixed-point perforation mechanical parameter calculation model has an important reference value for improving construction design efficiency and accuracy and construction success rate of hydraulic sandblasting fixed-point perforation of low-permeability reservoirs. A theoretical reference is provided for construction designers of the hydraulic sandblasting fixed-point perforation of the low-permeability reservoirs; the field application effect is good; and the mechanical model is high in calculation precision and high in practicality.

The present invention provides a polymer degradation agent, which comprises, by mass, 70% of ammonium sulfate, 5-10% of ammonium persulfate, 1-3% of amino trimethylene phosphonic acid, 1-2% of ethylenediaminetetraacetic acid, 3% of an emulsifying agent, 2% of a surfactant, and the balance of water, wherein the emulsifying agent is OP, and the surfactant is dodecyl dimethyl benzyl ammonium chloride. With the polymer degradation agent, free radicals can be produced at a lower temperature, the polymer solution with the high viscosity can be rapidly degraded into the solution with the viscosity close to the viscosity of water, pollution and damage of the polymer solution on the stratum can be effectively relieved, and the seepage capability of the polluted stratum can be recovered. In addition, the polymer degradation agent has characteristics of good site application effect, simple process, and low condition and equipment requirement, and is easy to promote and apply.

The invention discloses a transport equipment steel ladle path compilation method of considering production equipment scheduling plan constraints. According to the method, indexes that a steel ladle transport path is shortest, lifting and laying frequency is minimum, interval time between two successively adjacent steel ladles in the same path is longest, a steel ladle transport temperature drop is minimum, and transport time is minimum are taken as performance indexes, conditions that the loading weight of a crown block on the path is greater than the weight of the steel ladle laden with molten steel, transportable time of the crown block on the path is in a specified range of a furnace charge plan, a path length is in an available path length range determined by the maximum speed of the crown block and the furnace charge plan, and a temperature drop of the transported molten steel in the path does not exceed a specified temperature range of a furnace charge process are taken as constraint conditions, steel ladle transport paths are taken as a decision variable, and a mathematical model of the problem is constructed; the multi-priority-based heuristic compilation method of the steel ladle path is designed; and steel ladle path priority is determined and the available paths are sorted according to importance degrees of the performance indexes on the bases of the layout of a plant area and the furnace charge plan, and the steel ladle transport path is decided.

The invention relates to a perforator provided with a built-in detonating cord extrusion-type bullet fixing component. Under the combined action of a bullet fixing sleeve and bullet fixing holes in a bullet frame pipe, reliable fixation of a conventional perforating bullet in a manner of down-extrusion and up-compression is realized, the fixation mode of the perforating bullet in the bullet frame pipe of a conventional perforator is changed, the problem that height of burst inside a gun cannot be fully utilized during fixing the perforating bullet is solved, explosion unreliability caused by the fact that a detonating cord is worn by abrasion of the detonating cord and the inner wall of a gun body is avoided by the built-in mounting mode of the detonating cord, abrasion of the detonating cord and the inner wall of the perforating gun is avoided, and firmness in fixing the perforating bullet is increased. By the structure, the height of burst inside the gun of the perforating bullet can be effectively increased, and stability performance of the detonating cord and the perforating bullet is improved. The perforator is compact in structure, simple and convenient to operate and good in field application effect.

The embodiment of the invention provides a method, device and equipment for acquiring reserve volume of a carbonate rock fracture-cavity unit with a closed water body. The reserve volume of a reservoir body fracture-cavity unit with the closed water body can be acquired rapidly by acquiring crude oil accumulative output quantity Np, formation water accumulative output quantity Wp, output formationcrude oil volume coefficient Bo, output formation water volume coefficient Bw, crude oil compression coefficient Co, water compression coefficient Cw, oil well production pressure difference delta Pand original oil volume coefficient Boi and acquiring parameters of the fracture-cavity unit according to the volume percentage A of the closed water body of the fracture-cavity unit on the fracture-cavity, and the dynamic reserve volume is pushed finally, so that the problems that the reserve volume of the carbonate rock fracture-cavity unit with the closed water body is difficult to acquire andthe accuracy is low are effectively solved, good on-site application effect is achieved, basis is provided for carbonate rock oil well management and convenience and economic property are achieved.

The invention discloses a nanometer displacement agent and a preparation method thereof. The nanometer displacement agent is prepared from the following components by weight percent: 0.5-3% of alkali, 1-5% of polysilicic nanometer material, 1-5% of surfactant, 0.5-5% of polymer and the balance of water. The invention has reasonable formula, simple process, is safe and environment-friendly, and has low price; and the nanometer displacement agent of the invention can improve the displacement efficiency of tertiary oil recovery.

The invention discloses a conductive epoxy resin for pipeline repair and a pipeline online repair method. Specifically, two slidable sealing clamps in close contact with the pipeline inner wall are utilized to seal the repairing conductive epoxy resin containing sacrificial anode material powder particles between the clamps, gas pushes the clamps to move forward, and the filler between the clamps is extruded to fill pipe wall corrosion pits and quickly bond and solidify to the pipeline. The sacrificial anode material is employed to perform anode protection on the corrosion parts inside the pipeline, thus avoiding further corrosion of pipeline corrosion defect positions and ensuring the mechanical strength of the pipeline.

The invention discloses a line outgoing method of a composite insulator, and provides a composite insulator line outgoing bridge. The composite insulator line outgoing bridge comprises a guide line side connecting plate hook, an insulation bridge plate, a tensioning device and a cross arm side connecting plate hook, the cross arm side connecting plate hook is connected with one end of the tensioning device, the other end of the tensioning device is connected with the insulation bridge plate, and the other end of the insulation bridge plate is connected with the guide line side connecting plate hook. According to the line outgoing method, on-site operating personnel complete power failure maintenance work fast, smoothly and efficiently. The on-site operating personnel reflect that the 220kV vertical arrangement composite insulator chain line outgoing bridge is reasonable in design, light, convenient to carry, easy to mount and dismount and low in labor intensity, few personnel are needed, and the on-site application effect is good.

The invention discloses a retractable light self-suction aviation fire extinguishing device and a use method thereof. The device comprises a fire extinguishing agent adding device, a light telescopic water tank and a water suction device connected to the light telescopic water tank, wherein the light telescopic water tank comprises a light telescopic water tank fixing frame arranged at the lower portion of a cabin of a helicopter, a foldable and retractable soft water bag and a throwing device arranged at the bottom of the soft water bag, the water suction device comprises a water suction pipe capable of extending downwards, when water is not taken, the light telescopic water tank and the throwing device are folded and retracted in the light telescopic water tank fixing frame, when water is added, the water suction device sucks water from the lower portion into the light telescopic water tank by means of the water suction pipe so as to enable the light telescopic water tank to stretch downwards, and in a flying and water storage state, the light telescopic water tank and the throwing device are suspended in air after being stretched. According to the device, the water tank can be retracted when no water is stored, so that a height is very small, rising and falling of the aviation fire extinguishing device are not affected, and an application range is wider.

The present invention provides a polymer degradation agent, which comprises, by mass, 70% of ammonium sulfate, 5-10% of ammonium persulfate, 1-3% of amino trimethylene phosphonic acid, 1-2% of ethylenediaminetetraacetic acid, 3% of an emulsifying agent, 2% of a surfactant, and the balance of water, wherein the emulsifying agent is OP, and the surfactant is dodecyl dimethyl benzyl ammonium chloride. With the polymer degradation agent, free radicals can be produced at a lower temperature, the polymer solution with the high viscosity can be rapidly degraded into the solution with the viscosity close to the viscosity of water, pollution and damage of the polymer solution on the stratum can be effectively relieved, and the seepage capability of the polluted stratum can be recovered. In addition, the polymer degradation agent has characteristics of good site application effect, simple process, and low condition and equipment requirement, and is easy to promote and apply.

The invention provides a steel ladle anti-leakage early warning method and device for a steelmaking continuous casting process and a storage medium. The method comprises the steps that: temperature information of the outer surface of a steel ladle is obtained; a temperature value of a defect part is extracted, and back calculation is performed to solve a lining thickness; according to the solved lining thickness, a weight coefficient is set for an experienced process link to solve an erosion rate; the minimum safety thickness which enables the outer edge of the lining to be not broken is calculated according to a strength mechanics principle, and then the service life is predicted; and a steel ladle full-life-cycle bleed-out risk assessment system is established based on the minimum safetythickness, the erosion rate and technological link parameters, and a quantitative risk value is obtained to determine a leakage risk grade. The full-life-cycle anti-leakage risk assessment system isestablished, the current risk value is assessed, and important guiding significance is achieved for on-site package matching, turnover rate improving and service life prolonging.

The invention relates to a water injection fracturing device and method while drilling, belongs to the field of coal mine underground drilling and fracturing engineering, and particularly relates to the water injection fracturing device and method while drilling. The water injection fracturing device and method while drilling solve the problems that in a traditional hydraulic fracturing technology, drilling and fracturing construction are conducted step by step, the working procedures of repeated drilling up and down and drilling tool replacement are complex, and stability is affected by repeated disturbance of drilling before fracturing. By means of the water injection fracturing device while drilling and a matched technological method, water injection fracturing of layer penetrating or bedding drilling can be conducted in time in the position next to drilling construction, the working procedures of additional drilling up and down, drilling tool replacement and the like are not needed, equipment is simple, operation is convenient, risks are controllable, and the field application effect is remarkable.

The invention relates to the technical field of forest fire control, in particular to a helicopter fire extinguishing device. The helicopter fire extinguishing device comprises a bucket, a solid powder conveying system, a fire extinguishing agent dissolving container and a water pumping system, wherein the bucket is suspended on a helicopter; the fire extinguishing agent dissolving container surrounds the outer wall of the bucket; the solid powder conveying system is used for conveying fire extinguishing agent raw material solid powder in a helicopter inner cabin into the fire extinguishing agent dissolving container; the water pumping system is used for pumping water in the bucket into the fire extinguishing agent dissolving container; and the fire extinguishing agent dissolving container is used for dissolving the fire extinguishing agent raw material solid powder to form a liquid fire extinguishing agent and conveying the liquid fire extinguishing agent into the bucket. According to the helicopter fire extinguishing device provided by the invention, the fire extinguishing agent dissolving container is arranged around the outer wall of the bucket, and an aqueous solution and the liquid fire extinguishing agent do not need to flow through the helicopter inner cabin, so that the safety risk caused by leakage of the aqueous solution or the liquid fire extinguishing agent is avoided; and the gravity center distribution of the helicopter is not changed, so that the flight safety and the flight stability of the helicopter are ensured.

The invention relates to a high-concentration preservative bactericide. The problem that the conventional bactericide cannot be widely applied to water drive and polymer flooding sewage is mainly solved. The high-concentration preservative bactericide comprises the following components in percentage by weight: 30-70 percent of bactericide main agent 1,3-dioxane hexatomic ring and 30-70 percent of dibromo-3-nitrilopionamide. The high-concentration preservative bactericide is suitable for water drive and polymer flooding sewage, and when the dosing concentration is 5mg / l, the residual water quality bacteria in a water delivery and injection well can be ensured to reach the standard.

The invention discloses a three-dimensional automatic welding system. The three-dimensional automatic welding system mainly comprises a welding gun running mechanism, a control cabinet (21), a welding machine and a wire feeding machine, wherein the welding gun running mechanism comprises a swing mechanism, a lifting driving mechanism, a direct movement mechanism and a base (1); the movement direction of the swing mechanism, the movement direction of the lifting driving mechanism and the movement direction of the direct movement mechanism respectively correspond to the X-axis direction, Z-axis direction and Y-axis direction of a three-dimensional orthogonal coordinate axis. The invention discloses the control method for welding by use of the three-dimensional automatic welding system, and the control method can be implemented under an automatic control or a manual mode. The three-dimensional automatic welding system is applicable to multi-layer welding of medium-thickness walls and long straight seams, can be used for realizing automatic welding, and is low in manufacturing cost, convenient to use, stable in welding quality and relatively high in efficiency.