34results about How to "Reduce on-site construction costs" patented technology

The invention relates to a medium-high temperature oil reservoir phenolic gel self-degradation temporary plugging agent and a preparation method thereof. The temporary plugging agent is prepared fromthe following components in percentage by mass: 2 to 2.5 percent of low molecular weight polymer, 0.2 to 0.25 percent of phenolic cross-linking agent, 0.2 to 0.6 percent of aldehyde cross-linking agent, 0.05 percent of stabilizer, 0.1 percent of catalyst, 0.5 to 2 percent of gel breaker and the balance of water, wherein the sum of the mass percent of all the components is 100 percent. The gel temporary plugging agent provided by the invention can meet the requirements that the oil reservoir temperature is 60-100 DEG C, the plugging time is adjustable within 120-168h, and the gel breaking timeis adjustable within 168-240h; the plugging rate of a rock core reaches 98% or above, the permeability damage rate after gel breaking is 10% or below, a high-permeability layer of a target stratum canbe effectively plugged, flowback is easy after automatic gel breaking, damage to the stratum is extremely small, and the plugging agent can be suitable for most conventional oil reservoirs and has good field application value.

The invention discloses a gravel masonry dam material filling construction method in a cold region. The construction method includes: plane surveying of filling units; side boundary measuring and paying off of the filling units; acceptance inspection of basic planes; material exploitation, material feeding and material discharging; digging and loading of filling materials, and water adding outside a dam; material leveling and layer thickness controlling; watering replenishing; grinding; and grinding quality checking. The material exploitation is performed in a belt-shaped interval exploitation method, namely, when stock ground exploitation is performed in non-low-temperature seasons, a belt-shaped material source is reserved for exploitation in low-temperature seasons during the exploitation, and by means of natural water loss of the reserved belt-shaped material source, moisture content in gravel stone materials is lower than 2%; and the grain size of the gravel masonry dam shell materials is smaller than 0.075mm, particle content is lower than 3%, moisture content is no lower than 5%, and nonuniform coefficient Cu is larger than or equal to 15. The gravel masonry dam material filling construction method solves the technical problem of uneven sediment of deep covering layer in the dam body filling by stages, fully utilizes gravel masonry dam shell material filling construction in low-temperature seasons of winter to speed up engineering process, and ensures construction image and construction quality.

The invention relates to an automatic network access registration method based on a LORA communication technology. The method comprises the steps that: a radio frequency concentrator and a plurality of node terminals are set in a communication area; the plurality of node terminals and the radio frequency concentrator are connected, so that a LORA regional network is formed; the plurality of node terminals actively send a registration request to the radio frequency concentrator; and the radio frequency concentrator receives the registration request and responds till the node terminals are successfully registered. According to the method disclosed by the invention, the node terminals can automatically perform network access without manual intervention; the field construction cost is effectively reduced; furthermore, system installation is convenient; and construction operation is simple.

The invention discloses an H-type prestressed concrete column and a production method thereof. The production method of the H-type prestressed concrete column comprises the following steps: (1) mixing materials; (2) preparing embedded parts, and carrying out mesh processing, main reinforcement grouping and nut processing; (3) cleaning up molds; (4) bundling meshes and main reinforcements; (5) closing molds; (6) positioning pre-embedded nuts; (7) tensioning the main reinforcements; (8) mixing concrete; (9) carrying out concrete injection molding; (10) forming specimen; (11) carrying out concrete secondary finishing; (12) maintaining; (13) testing concrete strength; (14) demolding finished products; (15) inspecting finished products; (16)marking finished products; and (17) mending the shape. The H-type prestressed concrete column obtained by the method has a column body made of cement, sand, stone, water and admixtures, and the meshes and bar reinforcements are embedded in the column body; and one surface of the column body is in a planar shape, and the pre-embedded nuts for fixing sound absorption/insulation boards are arranged in the column body.

The invention relates to a heat transfer surface and microporous flow passages or small-hole flow passages integrated planar perforated-plate heat exchanger which comprises a flow distribution pipe, a flow collection pipe and a heat exchange perforated plate. The heat exchange perforated plate is connected between the flow distribution pipe and the flow collection pipe, the heat exchange perforated plate is internally and parallelly provided with a plurality of microporous flow passages or small-hole flow passages, and two ends of the microporous flow passages or the small-hole flow passages are communicated with the flow distribution pipe and the flow collection pipe respectively. Sections of the flow distribution pipe and the flow collection pipe are C shaped, and two ends of the heat exchange perforated plate are welded C-shaped openings of the flow distribution pipe and the flow collection pipe respectively to form an integral flow passage communicated structure. Compared with a traditional capillary network heat exchanger, the planar perforated-plate heat exchanger structurally has the advantages of avoidance of secondary construction for forming of the heat exchange surface, high heat exchange efficiency, low cost, convenience in mounting and the like.

The invention discloses a pressing block and a roof photovoltaic system comprising the same. The pressing block comprises a pressing plate and two side plates arranged on two opposite sides of the pressing plate; the two side plates are abutted against the same surface of the pressing plate, and a clamping groove is formed by the pressing plate and the two side plates in a surrounding mode; the outer side wall on one side, far away from the clamping groove, of the side plate is provided with a pressing piece used for pressing a photovoltaic module; the outer side wall on one side, far away from the clamping groove, of the side plate is provided with a clamping part used for clamping the photovoltaic module; the pressing piece is arranged close to the bottom of the clamping groove; and theclamping part is arranged close to the opening of the clamping groove. According to the pressing block, the upper surface of the photovoltaic module does not need to be perforated and damaged, so thata water leakage phenomenon is avoided, and the phenomenon that the photovoltaic module breaks down due to rainwater entering caused by the perforation is avoided; and the construction cost and the later maintenance cost are lowered, firmness and reliability are achieved, and the wind resistance is excellent.

The invention relates to a beam-slab integrated precast concrete structure and a construction method. The beam-slab integrated precast concrete structure comprises precast beam-slab units, precast laminated frame beams, concrete stand columns and a cast-in-place concrete surface layer; the concrete stand columns are distributed in an array mode, and bearing pieces A and B are arranged at the upper ends of the concrete stand columns; the two ends of the precast laminated frame beams are erected at the upper ends of the adjacent concrete stand columns correspondingly, and each precast laminated frame beam is provided with a bearing piece C; the precast beam-slab units are arranged between the two parallel precast laminated frame beams; the precast beam-slab units, the top surfaces of the precast laminated frame beams and all beam column joints are cast in place with concrete to form the cast-in-place concrete surface layer; the construction method comprises the steps that firstly, array construction of the concrete stand columns is completed; and then the precast beam-slab units and the precast laminated frame beams are installed in order, and finally the cast-in-place concrete surface layer is poured. The beam-slab integrated precast concrete structure and the construction method have the advantages that support-free and mold-free construction of precast concrete structure on-site construction is achieved, the construction speed can be remarkably increased, and the on-site construction cost is remarkably reduced.

The invention discloses a protection device for industrial and residential electric lines and based on a breaker. The protection device comprises a temperature sensor, a current transformer and a leakage current transformer which are separately used for collecting temperature, current and leakage current information of the electric lines; and the temperature sensor, the current transformer and theleakage current transformer are separately connected to a processor through a data acquisition module. The protection device has the beneficial effects that the current, temperature and leakage current values of the electric lines can be collected in real time, alarming or loop cutting off is controlled according to the collected values, and the purposes of protecting the production and living safety of the residents and protecting the electric lines are achieved.

The invention relates to the technical field of slope supporting, in particular to a prefabricated structure for supporting a slope. The prefabricated structure comprises prefabricated cross beams and longitudinal beams, the cross beams and the longitudinal beams are spliced to form lattice frame beams, the joints of the cross beams and the longitudinal beams are anchored through anchor rods, and reinforcing anchoring mechanisms are arranged on the cross beams and the longitudinal beams. According to the scheme, the cross beams and the longitudinal beams are prefabricated and transported to the site to be directly assembled, the site construction period is effectively shortened, operation is convenient, and the site construction cost is reduced.

The invention discloses a special channel-type multifunctional pipe box for a marine modular drilling machine. The special channel-type multifunctional pipe box for the marine modular drilling machine comprises a box body. A channel is arranged on the top of the box body. Supporting structures are arranged on the two sides of the box body. One end of the box body is connected with a DES module backflow tank, and the other end of the box body is arranged above a DES module slurry trough. The box body is divided into two spaces by a partition plate in the box body, and the two spaces do not communicate with each other. One end of the first space communicates with the upper portion of the DES module backflow tank. The second space is sealed relative to the DES module backflow tank. A pipe nozzle is arranged on the side portion of the second space. The bottom of the other end of the first space and the bottom of the other end of the second space are provided with liquid drainage holes right opposite to the DSM module slurry trough. By means of the special channel-type multifunctional pipe box for the marine modular drilling machine, the technical problems that as for a traditional marine modular drilling machine, a pipeline 16'' from the DES module backflow tank to the DSM module slurry trough occupies part of the height space of a safety channel and interference exists between an outlet bend of the backflow pipeline 16'' and the DSM module slurry trough are thoroughly solved.

The invention discloses a piling process of conduit frame pile pipes. The piling process comprises the following steps that 1, a crane on a workboat lifts a first platform (1) to the target sea surface; 2, auxiliary piles inserted into auxiliary pile holes (1.1) of the first platform (1) are inserted into the seabed; 3, the crane lifts a second platform (2) onto the first platform (1); 4, the pilepipes are inserted into engineering pile upper guide holes (2.1) and engineering pile lower guide holes (2.2) of the second platform (2); and 5, after the tops of the pile pipes are located below theengineering pile upper guide holes (2.1), cohesion pipes are inserted into the engineering pile upper guide holes (2.1), and the engineering piles continues to be downwards inserted into the seabed in the engineering pile lower guide holes (2.2) through the cohesion pipes. The piling process of the conduit frame pile pipes has the advantages that construction cost is low, and construction efficiency is high.

The invention discloses a CCA and rock wool composite board external thermal insulation system fixed through fixing parts and a construction method thereof. The thermal insulation system comprises a base wall, an adhesive mortar layer is arranged on the outer side of the base wall, and a CCA and rock wool composite board is arranged on the outer side of the adhesive mortar layer. The CCA and rock wool composite board is bonded to the base wall through adhesive mortar and anchored to the base wall through the fixing parts, and a coating layer is arranged on the outer side of the CCA and rock wool composite board. The CCA and rock wool composite board comprises a CCA board body and a rock wool board body, wherein the CCA board body and the rock wool board body are bonded together, a plurality of fixing part mounting holes are reserved in the surface layer of the CCA board body, and the fixing parts penetrate through the fixing part mounting holes and then are anchored to the base wall. The CCA and rock wool composite board external thermal insulation system has the functions of heat insulation, energy conservation, decoration and the like.

The invention relates to an outside-cabinet auxiliary guide rail device for a floor type circuit breaker of a switch cabinet, and the device comprises guide rail assemblies at two sides, which are distributed at intervals in the left-right direction, and are used in cooperation to provide slope support, thereby guiding the floor type circuit breaker to climb forward to enter the switch cabinet; the guide rail assembly on each side comprises a base used for being supported on a corresponding fixed foundation; and a guide rail plate which extends along the front-back direction and is used for supporting and guiding the floor type circuit breaker; wherein the guide rail plate is installed on the base in a pitching adjustable mode along an arc path so that the height of the guide rail plate can be adjusted according to actual needs. The guide rail plate is installed on the corresponding base in a pitching adjustable mode along the arc path, the guide rail plate can be adjusted to the proper height according to the actual height requirement, then the assembly requirements of installation places with different heights can be conveniently met, the assembly precision requirement for the installation position height can be effectively lowered, and the site construction cost is lowered.

The invention relates to a method for implementing fabricated concrete house building by using a member with a novel connecting end, which is characterized in that stress member columns and beams (including a roof truss beam and a stair beam) for fabricated construction have the following common characteristics: the end surfaces of the stress member columns and beams are plates integrally welded with reinforcing bars in the members, a plurality of holes are formed in the plates, and a certain distance is reserved between the plates and concrete on the back surfaces of the plates; therefore, the components can be conveniently connected through high-strength bolts. After the components are mutually connected, concrete can be conveniently poured at the connecting position, the connecting strength of the finished component nodes is not lower than or even higher than the strength of the nodes finished through the technology that the concrete is poured after steel bars are bundled on site, and the frame assembled on site actually becomes a whole. And on-site concrete pouring is only carried out at the joints, and the pouring amount is far smaller than that of traditional concrete construction. Aerated concrete wallboards are adopted in the maintenance system, and it is guaranteed that the building has good heat preservation, sound insulation and heat insulation functions. The method has the beneficial effects that the assembly rate of a concrete assembly type building is greatly improved; the investment of a concrete member factory is reduced; the supply distance of a concrete member factory is expanded; the on-site construction cost is reduced, and the house building quality is improved.