49results about How to "Simple construction conditions" patented technology

The invention discloses a nano silicon dioxide modified hard wood wax oil and a preparation method thereof. The invention aims to overcome the defects of low drying speed and low hardness in the existing wood wax oil, and to be applied to furniture application instead of common wood wax oil or nitrocellulose paint / polyurethane paint. The product comprises the following raw materials in percentage by weight: 35-45% of modified hard tung oil or linseed oil, 15-25% of carnauba wax of which the softening point is 85-95 DEG C, 15-25% of linseed oil long oil alkyd of which the oil length is 78-80% and the solid content is higher than 98%, 3-5% of nano silicon dioxide of which the particle size is 60-80 nm, 20-30% of decyclized aromatic hydrocarbon of which the distillation range is 160-200 degrees, 1-2% of isooctoate compound drying agent and 0.3-0.5% of methylethylketoxime. The preparation method comprises the following steps: preparing a material A, preparing a material B, and mixing the material A and the material B.

A wind power system (1) for generating power is proposed, comprising a rotor which is axially flowed through, is rotatably held on a shaft (2) and is provided with blades (3), as well as a guide device (5) which accelerates the air flow through the rotor (4). In order to provide advantageous conditions for generating power it is proposed that the guide device (5) consists of several flow conduits (6) tapering in the direction of flow, which conduits are arranged on the rotor (4) in a distributed way in the manner of a rim around the shaft (2), that the blades (3) are associated with one flow conduit (6) each and that the rotor (4) comprises an outside jacket (7) enclosing the same.

The invention discloses a high-pressure waterway anti-seepage method and a high-pressure waterway annular anti-seepage curtain, which belong to the field of rock mass anti-seepage, in particular to the field of rock mass anti-seepage treatment in a relatively high water head environment. The present invention aims at the disadvantages of the existing high-pressure waterway that needs to set up hanging curtains upstream of the underground powerhouse. Consolidate grouting holes and anti-seepage grouting holes; then use 0.3Mpa~0.5Mpa pressure for anti-seepage grouting and surrounding rock consolidation grouting; finally use ultra-fine cement chemical grouting and anti-seepage grouting holes with a grouting pressure greater than 2.0MPa to improve the surrounding area. The anti-seepage performance of the rock can reduce the leakage of high-pressure waterways, and then achieve the purpose of canceling the hanging curtain. The method has reasonable process layout design, simple structure and convenient operation, and can greatly save engineering cost.

The invention relates to a polyurethane waterproof coating material and a preparation method thereof. The polyurethane waterproof coating material is prepared from the following raw materials in partsby weight: 9.43-10.43 parts of water, 0.01-0.05 part of a PH regulator, 0.06-0.09 part of hydroxyethyl cellulose, 44-48 parts of waterborne polyurethane emulsion, 0.1-0.4 part of a preservative, 0.5-1 part of a wetting dispersant, 0.5-1 part of a defoaming agent, 2-8 parts of titanium dioxide, 2-8 parts of mica powder, 28.21-31.21 parts of barium sulfate, 0.2-0.6 part of a film forming aid, 0.8-1.1 parts of an antifreeze agent and 0.35-0.65 part of a thickener. The polyurethane waterproof coating material has the advantages of high strength and high toughness of the oil-based polyurethane waterproof coating material, simplifies the construction conditions, and has the properties of high strength, high toughness, low VOC, high environmental friendliness, easiness in construction and excellent waterproofness.

The invention provides a low-damage nitrogen foam fracturing liquid for a weak water-bearing coal-bed gas well and a preparation method thereof. The gas phase of the foam fracturing liquid is nitrogen, the liquid phase of the foam fracturing liquid is an additive solution, and the foam mass is 60 to 80 percent. The foam fracturing liquid is prepared from the following components in percentage by mass: 0.5 to 1.5 percent of a foaming agent, 0.3 to 0.7 percent of a foam stabilizing agent, 0.2 to 0.6 percent of a clay stabilizing agent, 0.1 to 1.0 percent of an auxiliary desorption agent and 96.2to 98.9 percent of water. The foaming agent is mainly an anionic surfactant; the foam stabilizing agent is mainly an amphoteric surfactant; the clay stabilizing agent is mainly an organic solvent; the auxiliary desorption agent is mainly a fluorocarbon surfactant. The foam fracturing liquid does not contain a macromolecular additive, has good temperature resistance and shearing resistance, high sand suspending capacity, good coal powder dispersing performance and negative damage to a coal rock core, and has a great significance to efficient development of weak water-bearing coal-bed gas and reservoir protection.

The invention relates to a water-coating-sand colorful paint and a preparation method thereof. The paint includes, by weight, 15-20 parts of a resin compound emulsion, 30-45 parts of compound powder, 3-5 parts of an additive, 30-50 parts of color sands, and 20-30 parts of water, wherein the resin compound emulsion is prepared by mixing acrylic pure acrylic emulsion and silicone acrylic emulsion. The additive includes, by weight, 0.3-0.5 parts of dodecanoate, 0.8-1.2 parts of propylene glycol, 0.2-0.4 parts of a wetting agent X-405, 0.2-0.4 parts AMP-95 neutralizing amine, 0.5-0.8 parts of an ammonium salt dispersant, 0.2-0.4 parts of a defoamer, 0.7-1 part of a DR-72 alkali swelling thickener, 1-1.2 parts of aluminum-magnesium silicate, 0.3-0.5 parts of cellulose, and 0.5-1 part of a liquid stabilizer. Compared with the prior art, the paint has good water resistance, extensibility and stain resistance, is low in preparation cost, is good in storage stability, is easy to construct and saves labor hour.

The invention provides an inverted waterproof insulation roof structure and a construction method thereof. The inverted waterproof insulation roof structure comprises a roof concrete structural layer,a roof waterproof layer, a roof additional waterproof layer, an isolation layer, a roof concrete protective layer and a roof surface layer from bottom to top. The roof waterproof layer is made of hard foam polyurethane waterproof insulation coating, the roof additional waterproof layer is made of one-component polyurethane waterproof coating, the isolation layer is made of a polyvinyl chloride plastic film, and the roof surface layer is made of one-component polyurea coating. According to the inverted waterproof insulation roof structure and the construction method thereof, the integrity anddurability of insulation and waterproofing under a complex roof environment are improved greatly, construction is easy, the waterproof and insulation performance is good, the load is light, and the compressive strength is high. At the same time, an insulation layer and a mortar leveling layer are omitted, manpower id saved, the construction efficiency is improved, and the economic benefit is improved. In addition, hard foam polyurethane is stable in chemical property and environmentally friendly.

An apparatus is described for foaming a slurry made of sand, water and a hydraulic binding medium by adding a foaming agent with a cylindrical vessel (2) for receiving the slurry and an agitator (7) revolving relative to the vessel about the vessel axis. In order to provide simple constructional conditions it is proposed that the agitator (7) comprises agitating units (10) distributed over the cross section of the vessel, which agitating units each consist of a rotor parallel to the vessel axis with agitator rods (14) between retainers (12, 13) on the face side, which rods are distributed over the circumference, are parallel to the axis and can be driven in an alternating manner in opposite directions.

A two-stroke internal combustion engine with at least one cylinder (1), comprising a crankcase (2) flow-connected to the cylinder (1) by at least one transfer passage (3) and provided with an air intake manifold (4) and comprising an injection device for optional introduction of a fuel into the cylinder (1) or the crankcase (2) is described. To achieve fuel-air mixing adapted to the operating state of the engine it is proposed that the injection device comprises at least one injection nozzle (11) which is oriented toward the inlet region (12) of the transfer passage (3) issuing from the air intake manifold (4) and can be controlled as a function of the direction of movement of the piston (5) and the controller of the transfer passage (3).

A ferroic component is described, comprising a ferroic layer (10) arranged between two electrodes (12,13), a thin-film field-effect transistor (4) whose gate electrode (3) forms one of the two electrodes (12, 13) of the ferroic layer (10) which is joined to the gate electrode (3) via an intermediate layer (11) acting as a bonding agent, and a substrate that is used as a support. In order to obtain a flexible component it is proposed that the thin-film field-effect transistor (4) on the one hand and the ferroic layer (10) which consists of an internally charged cellular polymer on the other hand are applied to the substrate which is arranged as a flexible plastic film (1), optionally by interposing an insulating layer (2) therebetween.

The invention discloses a method for rapidly adjusting segment positioning in a ship building process. The method comprises the following steps that a segment is hoisted on a supporting part, and thesegment is positioned for the first time by virtue of a crane; a plurality of rib positions are selected on the segment; a first eye plate is fixed to the selected rib position; a second eye plate anda third eye plate are fixed to the ground where the same rib position is located, and the second eye plate and the third eye plate are arranged on the two sides of the first eye plate correspondingly; the first eye plate and the second eye plate are connected in series through a connecting rod and a flower basket pull rod, and the first eye plate and the third eye plate are connected in series through a connecting rod and a flower basket pull rod; and the segment is positioned for the second time by adjusting the length of the flower basket pull rod. The method has the beneficial effects thatthe operation is simple, the using position is flexible, the application range can cover all the bottom segments, the used tool is small in size, and mounting and dismounting are quite convenient.

A two-stroke internal combustion engine with at least one cylinder (1), comprising a crankcase (2) flow-connected to the cylinder (1) by at least one transfer passage (3) and provided with an air intake manifold (4) and comprising an injection device for optional introduction of a fuel into the cylinder (1) or the crankcase (2) is described. To achieve fuel-air mixing adapted to the operating state of the engine it is proposed that the injection device comprises at least one injection nozzle (11) which is oriented toward the inlet region (12) of the transfer passage (3) issuing from the air intake manifold (4) and can be controlled as a function of the direction of movement of the piston (5) and the controller of the transfer passage (3).

A structural design is proposed, comprising rear-ventilated cladding elements (1), in particular plates or boards, which can be hung in front of a supporting framework (2), in particular consisting of vertical support elements and horizontal bearing elements, wherein the cladding elements are each assigned a frame (3) which spans a rear-ventilation cross-section (4) and the upper and lower frame leg profiles (5, 6) of which have ventilation openings (8) leading to the front (7) of the cladding. In order to provide advantageous rear-ventilation conditions it is proposed that at least the upper frame leg profile interior (12) is assigned a splash guard (13) which is arranged in the manner of a labyrinth seal, adjoins the frame leg profile below the ventilation openings (8), covers the ventilation openings (8) and preferably faces with the free end thereof towards the front (7) of the cladding.

An apparatus is described for heating service water with a solar collector, comprising a service water tank (7) with a partly cylindrical jacket (8) as an absorber and an enclosure (1) which covers the service water tank (7) and forms a translucent cylindrical jacket (3), the axis of which extends parallel to the axis of the jacket (8) of the service water tank (7). In order to provide advantageous heating conditions, it is proposed that the service water tank (7) is connected in a thermally conductive manner with an absorber plate (4) forming a bottom part of the enclosure (1) and that the absorber plate (4) and the jacket (8) of the service water tank (7) are covered with a wide-meshed, thermally insulating fabric (11).

An apparatus is described for burning organic substances, comprising a horizontal combustion chamber (2) provided in a housing (1) and heat-insulated against said housing (1), and a counter-flow heat exchanger (8) which preheats the combustion air with the help of the hot exhaust gases from the combustion chamber (2) and which forms a flow duct (10) for the combustion air between the combustion chamber (2) and a heat-exchanger wall (9) enclosing the combustion chamber (2), as well as a flow duct (11) for the hot exhaust gases on the side of the heat-exchanger wall (9) averted from the combustion chamber (2). In order to provide advantageous constructional conditions it is proposed that the heat-exchanger wall (9) of the counter-flow heat exchanger (8) is provided on the outside of the heat insulation (3) of the combustion chamber (2) which comprises an upper exhaust outlet (7) opening into the housing (1), that heat exchangers (6) which extend parallel to the combustion chamber (2) are provided for the heating of a heat-transfer medium with the sensible waste heat of the hot exhaust gases in the upper interstices (4) obtained on either side of the cylindrical combustion chamber (2) between the combustion chamber (2) and the substantially prismatic housing (1), and that the exhaust-gas-receiving flow duct (11) of the counter-flow heat exchanger (8) for the exhaust gases originates from the two interstices (4), while the heat-exchanger wall (9) extends with the flow duct (10) for the combustion air into the interstices (4).

An apparatus for granulating plastic is described, comprising a granulating head having a die plate (2) for allowing the output of strands of plastic and a rotor (5) which is coaxial to the die plate (2) and comprises granulator blades (4) for cutting strands of plastic exiting from the die plate (2), and a housing (1) for the granulating head which is connected to a discharge line (11) and a feed line (10) via a feed chamber (8) for a conveying and cooling medium receiving the granulate, preferably a cooling fluid. In order to provide advantageous conveying conditions for the granulate it is proposed that the housing (1) forms a discharge chamber (9) which is separate from the feed chamber (8) for the conveying and cooling medium, the rotor (5) which is arranged between the feed chamber (8) and the discharge chamber (9) and which carries the granulator blades (4) is adjacent to the feed chamber (8) with its rear side averted from the granulator blades (4) and is provided within the circular blade arrangement with axial openings (14) for the passage of the conveying and cooling medium from the feed chamber (8) to the discharge chamber (9).

A metallic structural part is described which is joined from at least two components (1, 2), of which one component (1) comprises a hub-like nose (3) for receiving the other annular component (2) without play, which is placed on the nose (3) so as to be stopped there and is secured against axial withdrawal by a latching ring which engages in a circular latching recess (8) of one of the two components (1, 2). In order to provide simple constructional conditions it is proposed that the latching ring engaging in the latching recess (8) of the one component (1) consists of a radially projecting ring segment (7) of the other component (2) and that the radial projecting portion (r) of the ring segment (7) corresponds at most to the magnitude of the maximum elastic deformation of the ring segment (7) in the radial direction.

An apparatus for laying fiber tapes includes a deflection guide for the fiber tapes made up of pressure plates arranged adjacent to one another transversely to the deflection axis and a frame for receiving the pressure plates which is displaceable in the laying direction. Pressure plates with rollers for deflecting the tape are provided between the pressure plates with a sliding surface for the deflection of the tape, and the retainers for the rollers, which retainers are arranged laterally on the pressure plates, displaceably engage in the pressing direction in recesses of the pressure plates with the sliding surfaces.

A structural design is proposed, comprising rear-ventilated cladding elements (1), in particular plates or boards, which can be hung in front of a supporting framework (2), in particular consisting of vertical support elements and horizontal bearing elements, wherein the cladding elements are each assigned a frame (3) which spans a rear-ventilation cross-section (4) and the upper and lower frame leg profiles (5, 6) of which have ventilation openings (8) leading to the front (7) of the cladding. In order to provide advantageous rear-ventilation conditions it is proposed that at least the upper frame leg profile interior (12) is assigned a splash guard (13) which is arranged in the manner of a labyrinth seal, adjoins the frame leg profile below the ventilation openings (8), covers the ventilation openings (8) and preferably faces with the free end thereof towards the front (7) of the cladding.

The invention provides a self-starting and stopping method of washing of a rubber ball of a condenser based on a DCS. The method includes the steps that the condenser circulating water cleaning coefficient is preset in the DCS, the condenser working condition data is collected, and by using the collected condenser working condition data, and the actual cleaning coefficient of the condenser circulating water side is calculated through the DCS configuration; and the preset cleaning coefficient Mu0 is compared with the actual cleaning coefficient Mu, and the control signal is sent to start / or stop a washing system of the rubber ball. Through the DCS control, the remote start and stop of the washing system of the rubber ball of A and B sides of the condenser circulating water from an existingsystem flow, the investment is low, the construction condition is easy to realize, and the information such as the cooling water flow, flow rate, pressure, and temperature of a condenser chamber can be mastered in real time.

The invention discloses a fire-resistant steel plate, which includes a steel plate layer and a fire-resistant layer, wherein the fire-resistant layer is a rankinite layer or a hard fiber layer; the outer side of the steel plate layer is wrapped with the fire-resistant layer; and the fire-resistant layer is adhered to the steel plate layer through silicate adhesive bonding agent, and is 5-15 mm in thickness. The fire-resistant plate provided by the application of the invention is simple in construction condition, has stable quality, is light as the fire-resistant steel plate is wrapped with the plate, has strong shock resistance and weatherability, avoids chalking or cracks during the use, needs no special maintenance after the construction, and effectively guarantees the durability and reliability.

The invention belongs to the technical field of adhesives, and in particular relates to a composite modified epoxy resin structural adhesive and preparation methods of a composite modifier and the structural adhesive. The structural adhesive is composed of an A component and a B component, wherein the A component comprises the following materials in parts by weight: 60-75 parts of bisphenol A epoxy resin, 5-15 parts of the polyurethane prepolymer complex, and 8-15 parts of an activated diluent; and the B component comprises the following material in parts by weight: 8-15 parts of a curing agent. The preparation method of the polyurethane prepolymer complex comprises the step of an incomplete reaction of a polyether polyol and polyphenyl polymethylene polyisocyanate, and the preparation method of the structural adhesive comprises the step of uniform stirring of the A component and the B component. The epoxy resin structural adhesive provided by the invention overcomes the defects that epoxy resin is hard and brittle on the basis of retaining good adhesion, low shrinkage, dielectric properties, excellent heat resistance and good chemical stability of the epoxy resin, so that the adhesive has the advantages of room-temperature curing, strong adhesion, hardness and toughness and the like.

A device is described for heat-treating sheet metal strips (6), comprising at least one radiant tube unit (1) which has three tubes disposed in a common plane parallel to the sheet metal strip (6), namely a middle tube (2) that can be connected to a burner and two outer tubes (3) that are connected at both ends to the middle tube (2) by means of tube bends (4), and a bearing (8) on the side of the radiant tube unit (1) opposite the burner for a bearing journal (9) connected to the two tube bends (4) between the middle tube (2) on the one hand and the two outer tubes (3) on the other hand, the bearing journal engaging in a journal receptacle (10) of the bearing (8) in an axially displaceable manner. In order to provide advantageous constructional conditions it is proposed that an insert (16) forming a sliding layer (15) is provided in the support area of the bearing journal (9) between the journal receptacle (10) of the bearing (8) and the bearing journal (9).

The invention relates to a combined plastic dam, in particular to an embedded combined plastic dam which belongs to dam structure technical field. The combined plastic dam comprise a plastic combined body and is characterized in that a lug boss and a concave groove matched with each other are respectively arranged in the middle parts of the left and right sides of the plastic combined body, a lug boss and a concave groove for vertical fixation are respectively arranged on the end surfaces on the upper and lower rows of the plastic combined body, the lug bosses and the concave grooves of the end-to-end connected plastic combined bodies are embedded and spliced to realize the transverse connection of the dam, and the lug bosses and the concave grooves of the vertically-connected plastic combined bodies are embedded and spliced to form the vertical connection of the dam. The invention adopts box-type components fabricated by waste plastic, greatly solves the utilization problem of waste plastic, reduces the pollution of waste plastic to environment, has superior waterproof property and durability, and has good anticorrosion and closing performance. The invention has broad raw material source, environmental protection, realizes mass production, requires less production investment and low cost, and is a good project with remarkable popularization value, less investment, quick returns and agriculture, countryside, and peasants supporting effect.

The invention relates to a forging apparatus, comprising forging rams (4) that are guided in the direction of stroke and accommodate forging tools (3), and lifting drives (7) which can be driven by a shaft (10) and which are supported in a non-positive manner on an abutment (12) of the forging rams (4) held under pretension in contact on the lifting drives (7). In order to provide simple constructional conditions it is proposed that the shafts (10) of the lifting drives (7) comprise two drive cams (11) which are angularly offset by 180° in relation to each other, are centrally symmetric with respect to the shaft axis, and cooperate with the abutments (12) of the forging rams (4).

The invention provides a paraffin cleaning and preventing method for a gathering and transportation pipeline. The method comprises the steps: respectively adding paraffin degrading bacteria and a microbial nutritional agent at an inlet of the gathering and transportation pipeline, adding the paraffin degrading bacteria, of which the amount is 0.2-0.4% medium transport volume, for the first time 2-4 days after the pretreatment of the gathering and transportation pipeline, and then, adding the paraffin degrading bacteria, of which the amount is 0.1-0.2% the medium transport volume, once every 15-30 days; adding the microbial nutritional agent, of which the amount is 0.01-0.02% the medium transport volume, once every 7-14 days. According to the method, the paraffin cleaning and preventing effect for the gathering and transportation pipeline of a ground gathering and transportation system is obvious, the transportation pressure of the gathering and transportation pipeline is lowered by at least 20%, the pipeline flushing cycle is prolonged by more than one cycle, the effective period is long, the cost is relatively low, and the construction conditions are simple; during use, the labor intensity is low, the labor conditions are good, and no environmental pollution is caused.

An apparatus for laying fiber tapes includes a deflection guide for the fiber tapes made up of pressure plates arranged adjacent to one another transversely to the deflection axis and a frame for receiving the pressure plates which is displaceable in the laying direction. Pressure plates with rollers for deflecting the tape are provided between the pressure plates with a sliding surface for the deflection of the tape, and the retainers for the rollers, which retainers are arranged laterally on the pressure plates, displaceably engage in the pressing direction in recesses of the pressure plates with the sliding surfaces.

The invention discloses a carbon fiber composite material ball head node and a connecting method thereof. The ball head node comprises a ball head, T-shaped screws and concave nuts; the ball head, the T-shaped screws and the concave nuts are all made of carbon fiber materials, the ball head is of a hollow ball structure, a plurality of long holes are formed in the ball head, the length of each long hole is larger than the width of each long hole, and each long hole is provided with one T-shaped screw and one concave nut and is connected with one pipe fitting. The connecting method comprises the steps that the ball head is slightly clamped by the T-shaped screws and the concave nuts, then the direction of the axis of each T-shaped screw is adjusted to a design value, finally, each concave nut is tightened, and the thread meshing positions and the contact positions of the concave nuts and the ball head are coated with epoxy resin glue and cured. Other structures are not needed for supporting and assisting solidification of the whole truss, the construction condition can be greatly simplified, the construction period is shortened, and the ball head node is of great significance in site construction of a large truss structure.