185results about How to "Shorten the engineering cycle" patented technology

The invention discloses a prefabricated bamboo composite pipe gallery, which is formed by connecting a plurality of prefabricated pipe joints, wherein each pipe joint comprises a pipe body, a force bearing mechanism, vertical supporting beams, a horizontal supporting beam and pipeline supports; the pipe body radially comprises a liner layer, a structure layer and an outer protection layer from inside to outside in sequence; the liner layer comprises flame-retarded resin and flame-retarded fabrics; the structure layer at least comprises a plurality of bamboo skin layers which are bonded with water soluble resin; the outer protection layer at least comprises flame-retarded resin; and the force bearing mechanism is fixed to the inner surface of the pipe body. The invention also discloses a method of manufacturing the prefabricated bamboo composite pipe gallery. The method comprises the manufacturing of the pipe body. The preparation method of the pipe body comprises the steps: (1) the liner layer is manufactured; (2) the structure layer is manufactured; and (3) the outer protection layer is manufactured. According to the invention, bamboo is utilized to manufacture a prefabricated pipe gallery, so that the intensity is good, the weight is light, the cost is low, the impermeability is good, the antiknock characteristic is strong, the construction is convenient, and the technical problems that the existing comprehensive pipe gallery consumes too many materials, the construction project amount is large, the construction period is long and the construction cost is high are solved.

The invention relates to a self-clean self-purification cement-based facing material and a production method thereof. The self-clean self-purification cement-based facing material comprises the following components in parts by weight: 20-30 parts of white silicate cements, 5-10 parts of mineral admixtures, 0-20 parts of quartz sands of 20-30 meshes, 20-30 parts of quartz sands of 40-70 meshes, 20-30 parts of quartz sands of 70-100 meshes, 1-4 parts of kieselguhr, 2-4 parts of zeolite, 0.2-0.6 part of nanometer titanium dioxide, 0.5-2.0 parts of EVA redispersible latex powder, 0.2-0.8 part of organic silicon water repellent, 0-1 part of ferric oxide inorganic pigment and 0.1-0.7 part of other chemical additive. The self-clean self-purification cement-based facing material, provided by the invention, has the advantages of good self-clean property, good self-purification property, good air purification capacity, good adhesive property, good construction property, good endurance quality, higher compression strength and the like, when the self-clean self-purification cement-based facing material is used for decoration of facings of an inner wall space and an outer wall space of a building, the air purification effect and the decoration effect are good, and the self-clean self-purification cement-based facing material can be applied for decoration engineering of all kinds of facings of walls of buildings.

The invention provides an effective grooving construction method for an underground continuous wall in slightly-weathered limestone with overlying sandy soil. The method specifically comprises the steps of 1) performing core drilling in a grooving area to determine rock characters; 2) measuring the position of a setting-out calibration guide wall; 3) performing guide wall construction and determining the distribution of hole punching positions; 4) drilling guide holes, and installing guide rods; 5) punching a rock layer by using a heavy hammer and grabbing crushed rocks by using a grooving machine; 6) brushing a wall by using a square hammer and connecting the holes to form a groove; 7) cleaning the bottom of the groove to finish the grooving construction. The construction method provided by the invention has the advantages that the defects and the shortages of unsafe and unstable factors, slow construction progress, poor grooving quality and the like are overcome, and the effective, low-cost and high-accuracy grooving construction in the slightly-weathered limestone is realized; the construction effect is good, the grooving speed is fast, the construction process is simple and convenient and the construction period is greatly shortened.

The invention relates to desulfurized gypsum based functional mortar for coating and a preparation method thereof. The desulfurized gypsum based functional mortar for coating comprises the following components in parts by weight: 20-35 parts of desulfurized gypsum, 5-10 parts of S95 superfine slag powder, 50-70 parts of quartz sands, 3-6 parts of kieselguhr, 0.2-0.5 parts of nanometer titanium dioxide, 0.5-1.5 parts of redispersible latex powder, 0.05-0.2 part of cellulose ether, 0-0.2 part of defoaming agent, 0.3-0.8 part of water repellent, 0.5-1.0 part of lithium carbonate early strength agent and 0.02-0.05 part of retarder. The desulfurized gypsum based functional mortar for coating, provided by the invention, has the advantages of good self-purification property, good self-humidifying property, good adhesive property, good construction performance, higher compressive strength and the like, and has good effects of purifying the air and adjusting the humidity when plastering an indoor wall of a building, so that the desulfurized gypsum based functional mortar for coating can be applied for plastering engineering of all kinds of indoor walls of buildings, and a large amount of industrial solid wastes are utilized with lower economic cost, and good environmental-friendly, energy-saving and waste utilization effects.

The invention relates to an airtight automatic de-rusting machine for a pipeline repaired port. The airtight automatic de-rusting machine is especially designed for solving the problems caused by a manual open type sandblast de-rusting operation for the pipeline repaired port. A main structure of the de-rusting machine is formed by a four-driving running device and a horizontal running device which are used for supplying motive power to the peripheral stepping and horizontal moving of the automatic de-rusting machine and executing a polishing operation. The airtight automatic de-rusting machine can automatically run according to a preset control program and can finish the surface treating operation for the pipeline; the surface of the pipeline after being treated completely meets the grade demand; the used time is short; and the efficiency is high. The airtight automatic de-rusting machine can be used for successfully solving a series of problems caused in the manual open type sandblast de-rusting operation; the labor intensity is greatly reduced; the environmental pollution is avoided; the sand material is saved; and the processing quality of the repaired port is fully ensured.

The invention provides an efficient grooving construction method for an underground diaphragm wall in micro-weathered granite. The method specifically comprises the following steps: 1, geologically surveying the construction site; 2, determining the rock breaking method; 3, determining blasting parameters; 4, drilling holes from a sand layer to the surface of a rock layer, and unearthing; 5, distinguishing a rock sample, and then determining and drilling to reach intermediately-weathered granite; 5, feeding a PVC (Polyvinyl Chloride) pipe for protecting a blasting lead; 7, drilling hole in the rock layer until reaching depth 1m more than the design burial depth; 8, feeding explosive and blasting. With the adoption of the efficient grooving construction method for the underground diaphragm wall in the micro-weathered granite, the defects and shortcomings like difficult construction in the micro-weathered granite or slow construction progress, and poor grooving quality of the existing construction method of covering sand the micro-weathered granite can be overcome; the efficient, high-precision and deep-rock-embedding grooving construction in the micro-weathered granite is realized; the method has a good effect and fast to groove.

The invention relates to an installation method for thermal insulation and decoration integrated facade panels in the field of construction methods of the construction industry. The method includes the following steps: (Step 1) main wall surface treatment; (Step 2) datum line making; (Step 3) framing installation; (Step 4) thermal insulation and decoration integrated facade panel installation; (Step 5) gap filling; (Step 6) sealant filling; (Step 7) panel surface cleaning. When the method disclosed by the invention is adopted, integral installation is convenient, cost is reduced, the construction period is short, the load of facade panels is reduced greatly, the utilizability of space and land is enhanced, the application range is wide, temperature is kept, heat is insulated, energy consumption is reduced, structural destruction caused by the circulation of rain, snow, freezing, thawing, dryness and wetness is prevented, the worry about the water seepage of wall surfaces is eased after installation, the phenomenon that indoor wall surfaces go moldy is effectively prevented, and the thermal insulation and decoration integrated facade panels are environment-friendly and durable.

The invention provides a digital stand-alone internal-projection whole-spherical-screen projection system, which comprises a digital projector, a fish-eye lens with a super viewing angle used for the digital projector and a spherical screen covering 4/5 to 9/10 area of a whole sphere, which is used for a combined projection of the digital projector and the fish-eye lens with the super viewing angle. The invention can conduct full-frame internal projection on a nearly whole-spherical transmission-type spherical screen only with one fish-eye lens and one common digital projector, and can guarantee a certain level of brightness and picture definition; the invention can be applied in the fields of city beautification project, advertising campaign on a plaza, corporation image display and product display, military training and command simulation, dimensional orientation analysis and panoramic analysis, synchronous playing of frames in a gymnasium, etc.

The invention provides a method for optimizing control parameters of a ventilation and air conditioning system of a subway station and belongs to the field of heating ventilating and air conditioning. The method is applied to the ventilation and air conditioning system and mainly comprises the following steps: building a simulated model of a platform layer of the subway station according to a design drawing of the subway station, and determining the parameters of the simulated model; meshing the simulated model; calculating initial control parameters, and programming a PID (Proportion Integration Differentiation) control program of the ventilation and air conditioning system of the subway station by using Fluent UDF (Universal Disk Format); operating Fluent software, and calculating and solving the simulated model of the ventilation and air conditioning system of the subway station; comparing simulation temperature and speed control results of a flow field under different control parameters, and finally optimizing to obtain optimal control parameters. The method disclosed by the invention has the characteristics of changing the control parameters of the ventilation and air conditioning system of the subway station, calculating the simulation temperature and the speed control results of the flow field under different control parameters by using the Fluent software and obtaining the optimal control parameters by comparison and optimization.

The invention discloses a line-scanning X-ray tube digital imaging detection device, which comprises a detection device fixation ring, a ray machine mobile base, a ray machine fixation device, a detector mobile base, a detector dismounting device, a ray machine and a linear array detector. The detection device fixation ring is arranged outside a tested steel tube; the ray machine and the linear array detector are arranged at the upper and lower ends of the detection device fixation ring respectively, move along an arc guide rail through an arc toothed bar and move circularly outside of the detected steel tube, and meanwhile, enable X-ray for synchronous flaw detection to finish real-time imaging detection of pipeline butt welding seams. The detection device not only overcomes many disadvantages of traditional film detection technology, improves detection efficiency, but also overcomes the defects of low guidance accuracy and poor detection effect of the imaging plate X-ray pipeline inspection technology, greatly reduces cost and is more suitable for wide popularization and application.

The invention discloses a recyclable foundation pit support pipe pile and an application and recovery method thereof. The recyclable foundation pit support pipe pile is characterized by comprising two semicircular hollow steel tubes. The axial section of each semicircular hollow steel tube is provided with alternating rectangular teeth and grooves. The rectangular teeth of the two semicircular hollow steel tubes are respectively provided with pinholes, the pinholes with coinciding center lines allow long pins to axially penetrate the rectangular teeth for fixation when the two semicircular hollow steel tubes are abutted to form the steel pipe pile. The application and recovery method includes the steps of determining the position of the pipe pile in a foundation pit, making a drilled hole, abutting the two semicircular hollow steel tubes into the steel pipe pile, placing the pipe pile into the drilled hole, constructing a foundation of the foundation pit, recovering the steel pipe pile after construction, and the like. The recyclable foundation pit support pipe pile and the application and recovery method thereof have the advantages that defects of the prior art are overcome, foundation pit supporting structures are recycled, engineering cost is reduced, engineering cycle is shortened, damage of the foundation of the foundation pit is avoided, and the recyclable foundation pit support pipe pile is highly practical.

The invention belongs to the related field of municipal facilities and discloses a prefabricated type pipe rack. The prefabricated type pipe rack is formed by connecting a plurality of pipe joints, wherein each pipe joint comprises a pipe body which sequentially comprises a structural layer and an outer protective layer from inside to outside in the radial direction; each structural layer is formed by bonding and curing one or more multiple wound layers of wood, hemp stalks, rattans, straws, reed stalks and silvergrass stalks; and the outer protective layer is prepared from a fireproof corrosion-resistant material. The prefabricated pipe joints are connected on the engineering field to form the pipe rack, so that engineering quantity is greatly reduced, construction is convenient, engineering period is shortened and manufacturing cost is low; the pipe body is simple in structure, is convenient to process, the structural layer is taken as the main body structure of the pipe body, and is formed by winding plants materials such as wood with certain strength, hemp stalks, rattans, straws, reed stalks and silvergrass stalks, and raw materials are wide in source, are green and environmentally friendly and are reproducible.

A modular bypass vent waste heat boiler at the tail of a cement kiln is mainly characterized in that a part of heating surfaces adopts heating surface modules which are independent of one another, have the same structure and is provided with respective independent frames; heat insulation protection plates are arranged around the frames to form a section of cylindrical outer shell; hoisting mechanisms are arranged on the frames; the heating surfaces of the modules are arranged on the frames in the respective outer shells; one end of each of inlet/outlet headers connected with the heating surfaces of the modules is arranged outside the outer shell; upper components of the boiler are connected with lower components of the boiler; and upper and lower headers of the modules are connected with ascending and descending pipes of a boiler barrel by pipelines as required. The installation period of the waste heat boiler can be greatly shortened, the labor cost is saved, the installation cost is greatly lowered, the welding quality can be controlled better, the service life of the boiler can be prolonged, and the heating surface of the boiler can be prevented from damages in the transportation process to the full extent.

The invention provides a shale gas desorption pressure tester. The tester mainly comprises a cylinder body, a base, an upper cover, a high-pressure micropump and a pressure sensor, wherein a glass observing window is arranged on the cylinder body; the pressure sensor is installed on the upper cover; a liquid inlet is formed in the central position of the upper cover; the upper cover is connected with the high-pressure micropump. Saturated brine with temperature consistent with the formation temperature is continuously added to the cylinder body in which shale cores are put and the value of pressure in the cylinder body immediately rises, linear bubbles generated in quantity because of desorption escape of adsorbed shale gases adsorbed on the surface of shale and in micropores can be observed from the observing window, when the linear bubbles begin reducing, the corresponding pressure value is the initial shale gas desorption pressure, and when the linear bubbles begin reducing in quantity, the corresponding pressure value is the main shale gas desorption pressure. The shale gas desorption pressure tester has the beneficial effects that adopting the direct measurement mode, compared with the prior art, the tester is more reliable and accurate in data, also has the effect of greatly shortening the experimental determination time and provides powerful guarantees for shortening the project period and ensuring the technology and economical efficiency of exploitation.