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359results about How to "Save construction time" patented technology

Ultrasonic cavitation and hydrofracture combined stimulation coalbed methane extraction method

The invention discloses an ultrasonic cavitation and hydrofracture combined stimulation coalbed methane extraction method. A main drill hole and a monitoring drill hole are constructed in an air inlet way or an air return way of the working face at first, a steel pipe of a built-in ultrasonic transducer is sent into the main drill hole after a drill bit in the main drill hole reaches a coalbed preset target position, the main drill hole is subjected to high-pressure-resistant hole sealing through a conventional grouting method, and an ultrasonic generator is turned on to continuously emit low-frequency ultrasonic waves with the frequency being 20-25 kHz to the coalbed after hole sealing is completed; hydrofracture equipment is started in 1-2 h to conduct hydrofracture operation on the main drill hole; the power of the ultrasonic waves is kept unchanged while coalbed hydrofracture is conducted, and the frequency of the ultrasonic waves is adjusted to 30-35 kHz; and hydrofracture is stopped when water flows out of the monitoring drill hole or pressure of a water injection pump decreases suddenly, the frequency and power of the ultrasonic waves are kept unchanged at the time, ultrasonic waves are emitted to the coalbed continuously, and the ultrasonic generator is turned off in 30 min. The coalbed permeability-increase method is free of pollution, low in cost and good in effect.
Owner:CHINA UNIV OF MINING & TECH

Production process for prefabricated reinforced concrete duct pieces

The invention discloses a production process for prefabricated reinforced concrete duct pieces. The production process comprises the following steps of: a, clearing a mould and removing oil of the mould; b, assembling the mould; c, detecting precision of the mould; d, mounting a steel reinforcement framework and embedded parts; e, pouring and vibrating concrete, wherein vibrating time is controlled to be 4-10 minutes; f, molding and plastering concrete; g, carrying out steam curing on the duct pieces, resting for 3-4 hours and starting heating and steam-curing after vibrating is ended, wherein the duct piece steam-curing comprises four stages of a still resting stage T, a heating stage S, a constant-temperature stage H and a cooling stage J; h, de-molding the duct pieces; i, numbering and marking the duct pieces, and checking appearance to repair; j, carrying out water curing on the duct pieces; and k, storing the duct pieces. According to the production process disclosed by the invention, factory construction time can be saved, the whole construction period is effectively shortened, and factory construction cost is reduced; a fixed mould is on a designated position, and therefore, designated duct pieces with errors are favorably managed, and problem causes can be quickly determined; tunnel shield reinforced concrete duct pieces with high quality can be produced; and construction operation is normalized, programmed and standardized.
Owner:CHINA RAILWEY ENG SERVICE CO LTD

Unmanned roadside parking toll collection system

The invention discloses an unmanned roadside parking toll collection system which comprises a data processing module, a video acquiring module, a data storage module and a data transmission module, wherein the video acquiring module, the data storage module and the data transmission module are connected with the data processing module. The video acquiring module acquires video frame data in a parking area. The data storage module stores user information, user parking information, a parking toll collection standard and a user backlist. The data transmission module realizes data exchange between the data processing module and a user client. The data processing module comprises an image recognition unit, a toll collection unit and an alarm unit. The image recognition unit detects and traces a vehicle target which drives the parking area. The charging unit calculates a parking expense of the user and transmits an electronic invoice to the user client. The alarming unit transmits alarm information to the user client which does not confirm parking, drive out of a parking space or pay the parking expense in a preset threshold time period. The unmanned roadside parking toll collection system realizes full-process electronic management for identification, charging and expense payment of a roadside vehicle parking behavior.
Owner:NANJING UNIV OF INFORMATION SCI & TECH

Integrated underground pipe gallery with compensation device

The invention provides an integrated underground pipe gallery with a compensation device, and the integrated underground pipe gallery with the compensation device is high in mounting efficiency, low in cost, high in bearing capacity, long in service life and convenient to repair. The integrated underground pipe gallery with the compensation device comprises a plurality of pipe joint sealing bars and a plurality of pipe joint units connected end to end, the pipe joint sealing bars are arranged between the adjacent pipe joint units, the pipe joint units comprise pipe joints and a plurality of parallel pipelines, the pipelines are arranged on the inner bottom faces of the pipe joints through fixing seats, the two ends of each pipe joint are provided with pipe joint telescopic connecting pipes matched with the pipe joint in shape respectively, the two ends of each pipeline are provided with pipeline telescopic connecting pipes respectively, first flanges are arranged at the ends, away from the pipe joints, of the pipe joint telescopic connecting pipes, and second flanges are arranged at the ends, away from the pipelines, of the pipeline telescopic connecting pipes. According to the integrated underground pipe gallery with the compensation device, mounting efficiency is improved, construction time and cost are saved, and the capacity of resisting differential settlement of a foundation is enhanced.
Owner:杨帆

Multi-stage perforation supercharging method

The invention discloses a multi-stage perforation supercharging method. In the technological processes, a supercharging device is connected with the tail of a perforation gun of the upper level, after the perforation gun of the upper level is detonated, the perforation gun transmits detonation waves to the supercharging device, a baffle igniter of the supercharging device is detonated to ignite a supercharging gun powder mechanism, the supercharging gun powder mechanism generates high-pressure gas to push a supercharging piston to move to shear a shear pin of the supercharging device, and to push the piston to extrude a liquid inside an interlayer oil pipe so as to increase the pressure inside the interlayer oil pipe, and the shear pin of the lower-level detonation device is shorn off to detonate a pressure detonation device and a perforation gun of the lower level so as to complete the perforation operation of the lower level. The method can ensure the stability and the controllability of pressure generated due to the combustion of supercharging gun powder in a supercharging cavity, the pressure is then acted on the supercharging piston to ensure that the supercharging piston moves stably, the method can also realize high-precision shearing, can be used in a pressure type multi-stage perforation process, and is suitable for various well conditions.
Owner:CHUANNAN ENERGY TECH CO LTD

Multi-stage perforating pressurizing device

The invention discloses a multi-stage perforating pressurizing device. The device comprises a power shell and a pressurizing shell positioned on the lower part of the power shell, wherein a power cavity is formed in the power shell; a pressurizing cavity is formed in the pressurizing shell; the power cavity is communicated with the pressurizing cavity; a diaphragm igniter and a pressurizing gunpowder mechanism positioned on the lower part of the diaphragm igniter are arranged in the power cavity; a pressurizing piston driven by power generated by the power cavity is arranged in the pressurizing cavity and is connected with a piston through a push rod; and the piston is fixed on an intermediate joint through a shear pin. The stability and controllability of pressure generated by the combustion of gunpowder in the pressurizing cavity can be ensured; the pressure is applied to the pressurizing piston, so that the pressurizing piston moves stably; pressure increment is generated in an interlayer oil pipe, so that a next stage pressure initiation device and a next stage perforating gun are reliably detonated; and the multi-stage perforating pressurizing device is used for the pressure multi-stage perforating process, is suitable for various well conditions, and particularly can meet the requirements of a high-inclination well and a horizontal well on multi-section, large-distance and negative pressure perforating.
Owner:CHINA PETROLEUM LOGGING CO LTD +1

Gas extraction and coal spontaneous combustion coupling disaster-causing experimental simulation apparatus and method

The invention discloses a gas extraction and coal spontaneous combustion coupling disaster-causing experimental simulation apparatus and method in a coal mine. The gas extraction and coal spontaneous combustion coupling disaster-causing experimental simulation apparatus comprises a pressure-resistant insulation seal tank, a gas extraction and filling apparatus and a monitoring apparatus; the gas extraction and filling apparatus comprises a vacuum gas extraction pump and a constant-pressure gas filling apparatus, the constant-pressure gas filling apparatus comprises a gas filling bottle with a pressure gauge, a decompression valve, an explosion-proof gas washing box, a gas drying box, a constant-temperature heating box, a pressure stabilizing valve, a pressure gauge, a flow gauge and two gas switch valves; the monitoring apparatus comprises a plurality of temperature sensors, a temperature analysis instrument and a gas chromatograph; the pressure-resistant insulation seal tank is internally provided with a coal sample, and the gas extraction and filling apparatus enables the vacuum gas extraction pump and the constant-pressure gas filling apparatus to be respectively connected with the coal sample in the heat-resistant insulation seal tank through an h-shaped steel pipe; and the monitoring apparatus is connected with the pressure-resistant insulation seal tank. By adopting the gas extraction and coal spontaneous combustion coupling disaster-causing experimental simulation apparatus and method, a gas extraction and coal spontaneous combustion coupling disaster causing process in the underground gas extraction process of a coal mine can be really and accurately simulated.
Owner:CHINA UNIV OF MINING & TECH

Defect reinforcing and processing construction method of drill filling pile

The invention discloses a construction method for consolidation treatment of a defective bored pile, which comprises the following steps: 1. measure lofting: according to the result obtained by the sound wave detection of a defective pile foundation, the measure lofting of the defective pile foundation is performed, and the central position of the defective pile foundation and the thickness of the defective position are determined; 2. excavating a central hole: according to the position of the pile foundation undergoing the measure lofting, the hole is excavated from the center of the pile foundation; 3. processing the defective part: when the defective part is reached by manual excavation, the defective part is checked and cleaned, and no less than 0.5m is excavated in thickness; and, 4. casting concrete: reinforcing steel material which is the same as that used in the pile foundation is processed into a reinforcing steel cage for consolidation, the reinforcing steel cage for consolidation is placed on the bottom part of the hole and fixed; the concrete is cast in the mode of layered casting and layered vibration, after casting the concrete, the pile foundation is naturally cured. The method ensures the engineering quality and saves construction cost and time. The method is particularly suitable for the treatment of the casting pile which has high ground water level and big infiltration capacity and of which the defective part is arranged on the medium upper part of the bored pile and less than 10m away from the ground and the diameter is more than 1.5m.
Owner:TIANJIN 20 CONSTR

Integrated system for efficiently and synergistically removing multiple pollutants

The invention relates to an integrated system for efficiently and synergistically removing multiple pollutants. The integrated system reduces discharge values of smoke, SO2, NOx, mercury, SO3 and other main smoke pollutants to achieve the discharge standard of a fuel gas unit. According to the technical scheme, the system comprises an SCR reactor, low-temperature dust removing equipment, a desulfurizing absorption tower and a wet-type electrostatic dust collector, wherein the inlet of the SCR reactor is connected with a smoke outlet through a tail smoke channel of a boiler improved through low-nitrogen combustion, and SCR denitration catalysts are modified catalysts capable of improving oxidation susceptibility of zero-valent mercury; the inlet of the low-temperature dust removing equipment is connected with the outlet of the SCR reactor to be used for removing dust and SO3; the inlet of the desulfurizing absorption tower is connected with the outlet of the low-temperature dust removing equipment to be used for desulfuration and dust removal; the inlet of the wet-type electrostatic dust collector is connected with the outlet of the desulfurizing absorption tower, and the outlet of the wet-type electrostatic dust collector is connected to a chimney through warming equipment to be used for removing the dust, gypsum fogdrops, the mercury and SO3. The integrated system is used for the technical field of atmospheric pollution prevention.
Owner:ZHEJIANG TIANDI ENVIRONMENTAL PROTECTION TECH CO LTD +1

Safe and covert high-capacity oil depot arranged underground

The invention discloses a technical method of a safe and covert high-capacity oil depot arranged underground. The safe and covert high-capacity oil depot arranged underground is characterized in that the oil depot is built in mines to be wasted or abandoned mines or idle tunnels, caves, cave dwellings and culverts. The oil depot is composed of a plurality of nonstandard single storage tanks, wherein the storage tanks are connected through pipelines, and tube valves are mutually communicated and isolated. An oil inlet tube and an oil outlet tube are respectively installed on the upper portion and the lower portion of a tank body and connected with an oil inlet and outlet main tube, the oil inlet tube and the oil outlet tube extend to the ground to be connected with an oil discharge device, and a buffer pump and an oil well pump are installed on the main tube. Inflaming retarding isolation protective screens are arranged among the storage tanks, and a pedestrian path is arranged on the side. Ventilation equipment, fire control equipment, lighting equipment and dewatering equipment are installed in the depot, and a camera shooting monitoring instrument and a gas automatic detecting instrument are installed. The safe and covert high-capacity oil depot arranged underground has functions of fire protection, thunder prevention, war prevention and man-made sabotage prevention, solves the problem that the prior art is large in land occupation, high in construction and operational cost, small in storage content, multiple in environmental factor influence, poor in elusive performance and poor in safety and reliability, and has safety risks on the periphery.
Owner:孔令先 +1

Bridge pier capping beam hoop steel beam template system and construction method thereof

PendingCN108505448ASave on foundation hardening treatment costsSave on hardening costsBridge erection/assemblyPre stressEngineering
The invention discloses a bridge pier capping beam hoop steel beam template system and a construction method thereof. A template system support comprises pier columns, upper hoops, lower hoops, a capping beam pouring template, a cross beam and so on; the upper hoops and the lower hoops are connected with the pier columns through high-strength bolts; hoop cover plates are arranged at the end partsof the upper hoops and the lower hoops; hoop cover plate cross beam placing grooves are formed in the hoop cover plates at the upper end parts of the upper hoops; the cross beam is mounted on the hoopcover plates; longitudinal distribution beam limiting devices are arranged on the cross beam; longitudinal distribution beams are mounted on the cross beam; bottom dies are arranged on the longitudinal distribution beams; an integral steel reinforcement cage, a corrugated pipe, prestressed steel strands and P-shaped anchorage devices are arranged in the capping beam pouring template; and an unitplug-in type safety protective frame is mounted on the pier columns through pier column reserved placing holes. According to the bridge pier capping beam hoop steel beam template system, the bracket foundation treatment cost can be saved, the construction efficiency can be enhanced, the concrete filling difficulty after pre-stressed construction is finished can be reduced by using a tensioning notch sealing anchor concrete filling duct, and the flatness and smoothness of the surface of the tensioned beam body is guaranteed.
Owner:ANHUI HIGHWAY BRIDGE ENG CO LTD

Heat insulation recycling transport vehicle for hot air circulation asphalt mixture

A heat insulation recycling transport vehicle for hot air circulation asphalt mixture comprises a vehicle chassis, an asphalt mixture bin, a bin lifting mechanism, an excess material recycling transport mechanism, a follow charging hopper and an electric control device. The asphalt mixture bin is a tipper-hopper discharge type hot air circulation heating heat insulation bin mechanism, the heat insulation bin mechanism comprises a flipping frame, a heat insulation bin, a hot air circulation furnace device and a generator set, a feeding hopper is arranged on the heat insulation bin and is in butt joint with the follow charging hopper, the heat insulation bin comprises a heat insulation box, a bottom hot air channel, a tail hot air channel, two side wall hot air channels, two groups of spoilers and an inner bin, and the hot air circulation furnace device comprises a diesel tank, a diesel supply device, a hot air furnace and a high-temperature circulation fan. The heat insulation recycling transport vehicle has the advantages that heating is quick and uniform, the heat efficiency is high, hot air with waste heat can be recycled, loading transport heat insulation effects are fine, and the best laying temperature and quality of the asphalt mixture are constantly ensured.
Owner:ANSHAN SENYUAN ROAD & BRIDGE

Tunnel transverse cave-to-master cave top brushing construction method and top brushing structure

The invention discloses a tunnel transverse cave-to-master cave top brushing construction method. The tunnel transverse cave-to-master cave top brushing construction method comprises the steps that firstly, a transverse cave is constructed to an upper step of a regulated master cave, climbing and direct top brushing are carried out from the top arc outline of the master cave to the width direction of the master cave through a small guiding cave, and a beam is erected at the joint of the transverse cave top and the master cave; secondly, a primary support is carried out on the master cave of the small guiding cave part; thirdly, a vertical support temporarily supported by the small guiding cave in the master cave large mileage direction is dismounted, and the upper step of the master cave is excavated through expanding in the master cave large mileage direction; fourthly, a vertical support temporarily supported by the small guiding cave in the master cave small mileage direction is dismounted, and the upper step of the master cave is excavated through expanding in the master cave small mileage direction through a step method. The invention further discloses a tunnel transverse cave-to-master cave top brushing structure. The small guiding cave top and the master cave top of the top brushing structure are consistent in structure, the beam is erected at the joint of the transverse cave top and the master cave, and a small guiding cave temporary support is located above a master cave primary support. The top brushing excavation area is small, and the construction risk is low.
Owner:DALIAN MUNICIPAL DESIGN & RES INST

Electric vehicle charging station based on electricity generation by reforming hydrogen production fuel cells

The invention discloses an electric vehicle charging station based on electricity generation by reforming hydrogen production fuel cells. The electric vehicle charging station includes a total storagedevice, a centralized liquid supply system and a plurality of fuel cell electricity generation systems. The total storage device is used for storing hydrogen-containing fuel in the charging station,and the centralized liquid supply system is used for conveying the hydrogen-containing fuel stored by the total storage device to a hydrogen production system to produce hydrogen. Each fuel cell electricity generation system includes a fuel cell generator set and an electric vehicle charging pile. The fuel cell generator sets use the hydrogen produced by the hydrogen production system to perform electrochemical reactions to generate electricity, and the electric vehicle charging piles store generated electric energy which is used for charging electric vehicles. Through layout of the charging station which use hydrogen compounds as raw materials and use the fuel cell generator sets to generate the electricity, charging for the battery-based home electric vehicles without the need to re-laya dedicated transmission network in a large area is realized, and initial investment costs and construction time are saved; and the problem of inconvenient charging during long-distance travel of theelectric vehicles is solved.
Owner:德州新动能铁塔发电有限公司
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