379 results about "Hydraulic load" patented technology

The invention discloses a true triaxial apparatus with a three-directional independent loading pressure room structure, wherein, an axial pressure cavity of the main part of the apparatus is connected with the axial pressure source pressure cylinder through a hydraulic pressure conduit. A hydraulic bag is respectively arranged in four side pressure cavities of a sampling base, every hydraulic bag is connected with a lateral pressure source pressure cylinder through lateral pressure inlet conduit; a hydraulic load control part, and a detection signal gathering and control part are both controlled by a control device. The true triaxial apparatus provided by the invention overcomes the disadvantage of the prior true triaxial apparatus that the three major stresses can not be totally separated and the three major stresses are mutually affected in a loading process; and the true triaxial apparatus has the advantage of simulating the trials of various engineering conditions under the dead stress, thus the testing condition is much better in accordance with the practical conditions of the engineering; the true triaxial apparatus also has the advantage of low manufacture cost.

The invention provides a novel coal and gas outburst similarity simulation test method based on a geological mechanical model test by referring a coal and gas outburst simulation test device and a geotechnical engineering multifunctional test device on the basis of the similar material simulation test concept and the technical concept of the geological mechanical model test. A large-sized three-dimensional coal and gas outburst simulation test device is designed and mainly comprises a reaction frame (1), a hydraulic load (2), a test box body (3), a roadway excavation device (4), a sealing and gas face inflating device (6) and the like. Gas is introduced into a test model of the test box body by establishing a geological structure coal test model (7), so that the geological mechanical model test and the coal and gas outburst similarity simulation test can be reasonably combined, the coal, rock, gas and complex geological structure are integrated, the coal and gas outburst mechanism under variable conditions of the complex geological structure and the coal seam gas reservoir can be explored, and a novel thought is provided for researching the coal and gas outburst mechanism.

A test system of 3D geologic mechanical model is composed of box testing device formed by connecting box cast steel component, angle element and chassis together through high strength bolts; hydraulic loading control system formed by variable ¿C load loading plate with thin jack at top, hydraulic loading control table and oil separator. It features that said loading plate is connected on left and right internal walls of box testing device through thin jack and said loading control table is connected to jack through oil separator and oil pipe.

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment tridimensional artificial wetland system that is used for the industrial waste water treatment of small-scale isolated pollution sources. The invention aims at providing a tridimensional artificial wetland system that is used for sewage treatment and that has small floor occupancy, high hydraulic load, high pollution load and long service life so as to overcome the defects of the current sewage treatment of big artificial wetland floor occupancy, low hydraulic load, low pollution load and short system service life. The key points of the invention are that: the artificial wetland for sewage treatment adopts a tridimensional assembled structure of vertical current artificial wetland and horizontal subsurface flow artificial wetland, and base materials are filled in various directions to form the tridimensional artificial wetland system for sewage treatment; the tridimensional artificial wetland system for sewage treatment comprises a water collecting header, a porous water-filtering vertical current artificial wetland bed, a first-stage regulating tank, a water drop chute, a grid tank, a second-stage regulating tank, a horizontal subsurface flow artificial wetland bed and a water collecting tank.

An apparatus which selectively increases the size of the wake of a boat with an outboard or sterndrive motor system. The apparatus has one or more plates attached to the boat hull which, when rotated below the bottom of the hull, extend into the flow of water when underway, increasing the size of the wake due to the dynamic displacement of water. A support bar mechanism transmits propulsive force from the motor drive unit to the plates to overcome resistive hydraulic loads. Linkages may be used to locate the support bar mechanism. In one embodiment, the support bar mechanism is comprised of a plurality of members and pivots such that the support bar mechanism can be stowed substantially out of the flow of water until larger wakes are desired. In other embodiments, mechanical cable, fluidic, or electrical control systems are used to control the configuration of the support bar mechanism.

An apparatus which selectively increases the size of the wake of a boat with an outboard or sterndrive motor system. The apparatus has one or more plates attached to the boat hull which, when rotated below the bottom of the hull, extend into the flow of water when underway, increasing the size of the wake due to the dynamic displacement of water. A support bar mechanism transmits propulsive force from the motor drive unit to the plates to overcome resistive hydraulic loads. Linkages may be used to locate the support bar mechanism. In one embodiment, the support bar mechanism is comprised of a plurality of members and pivots such that the support bar mechanism can be stowed substantially out of the flow of water until larger wakes are desired. In other embodiments, mechanical cable, fluidic, or electrical control systems are used to control the configuration of the support bar mechanism.

A machine has a boom, that is pivotally raised and lowered by a first cylinder, and has a load carrier that is pivoted at the end of the boom by a second cylinder. As a machine operator commands movement of the boom, the position of the load carrier is automatically altered by a controller to prevent a load from falling off the load carrier. The load carrier position with respect to the boom is altered in response to the amount of boom motion to maintain a constant position relationship between the load carrier and a chassis of the machine. Although the boom and load carrier move through different angular positions, the machine control is expressed in terms of the linear motion of the first and second cylinders.

The present invention discloses the true triaxial apparatus of an unsaturated soil, including a host, pore water and a gas pressure controller, a hydraulic load controller and a signal acquisition and processing unit; the host base is equipped with an axial regulating piston, which communicates with the pressure chamber base upward through an axial hydraulic cylinder; the pressure chamber base is enclosed into a pressure chamber upward through the side wall of pressure chamber and the roof; the side of pressure chamber base is provided with four lateral displacement sensors, wherein the probe of each lateral displacement sensor contacts with a lateral deformation measurement guide rod, and four lateral deformation measurement guide rods penetrate into the pressure chamber from four sides to contact with the specimen; an axial pressure sensor is arranged on the cross bar of the host bracket; an axial displacement sensor is mounted on the pole of host bracket. The device provided by the invention has reasonable structure, convenient use, and meets the requirement of unsaturated soil mechanic performance test with true triaxial under controlling and measuring the suction.

A testing system considering the THMC coupling effect in a rock joint shearing process comprises a mainframe and loading structure, a loading servo control system, a seepage shearing box and sealing device, a high-low-temperature environment testing box and a seepage servo control system, wherein the mainframe and loading structure comprises a normal loading frame and a horizontal loading frame which are vertical to each other and have independent loading ability, and the loading servo control system includes a hydraulic loading servo control system for common tests and a motor servo loading system for rheological tests; the seepage shearing box and sealing device is located in the high-low-temperature environment testing box, and the action ends of the normal loading frame and the horizontal loading frame penetrate the high-low-temperature environment testing box to be abutted against the seepage shearing box and sealing device; the loading servo control system is respectively connected with the normal loading frame and the horizontal loading frame. The testing system is high in seepage pressure bearing capacity, and tests and analysis under the THMC coupling effect can be achieved effectively.

The invention relates to a biological carbon modular composite vertical-flow artificial wetland system which comprises a wetland bed body, a water inlet tank, a gravel layer, a modular biological carbon layer, a mixed filler layer, a filtering medium layer, wetland plants, a reflux unit and a water distributor. When the wetland operates, influent water passes through the anoxic gravel layer and biological carbon layer, the aerobic mixed filler layer, and the anoxic biological carbon layer and filtering medium layer. The reflux unit is arranged inside, and pollutants in sewage are removed under the filtration-adsorption-precipitation action, microbial conversion action and plant absorption action. The biological carbon modular composite vertical-flow artificial wetland system has the advantages of blockage prevention, high hydraulic load, favorable nitrogen / phosphorus removal effect, stable operation and the like.

The invention discloses a comprehensive test-bed for an oil film bearing of a rolling mill, belonging to the technical field of testing equipment of oil film bearings of rolling mills. The comprehensive test-bed is characterized by comprising a mechanical system, a motor driving system, a hydraulic loading system, a lubricating system, an air pressure control system, an electric control system and a computer data acquisition system which are combined to form an integral and uniform operation; flow sensors, temperature sensors, pressure sensors and displacement sensors mounted on the bearing and all pipelines are connected to the computer data acquisition system through a PLC (Programmable Logic Controller); and the electric control system is connected with and controls the motor driving system, the hydraulic loading system, the lubricating system and the air pressure control system. The invention realizes integration of an electromechanical hydropneumatic integral system by setting rotation speed of a motor shaft and the dynamically controlling rolling conditions of the hydraulic load and testing performance of the oil film bearing of the rolling mill by the data acquisition system. The system has the advantages of compact structure and convenience for operation, and is suitable for the fields of various teaching and scientific research.

The invention provides a combined process of tower angleworm bio-filters and constructed wetlands for treating the domestic sewage. The combined process comprises the following steps: firstly, the sewage enters a hydrolysis-acidification pool and stabilizes after the action, and the water quantity is adjusted; secondly, the domestic sewage in the hydrolysis-acidification pool is distributed into a hydrolysis-acidification pool for removing COD, total nitrogen, nitrogen-nitrogen, total phosphorus and pathogeny microbes; and thirdly, the tail water in the second step enters a constructed wetland to be subjected to strengthening treatment, thereby building a suitable waterfront surroundings landscape, or the tail water is recycled by serving as reclaimed water. The combined process has the following advantages: firstly, the system hydraulic loading is high, and the surface hydraulic loading can reach 1m<3> / m<2>*d, thereby greatly saving land; and secondly, under the high hydraulic loading, the total nitrogen removal rate of the system can reach more than 85 percent; the removal rates of other materials in the system are all more than 90 percent, the effluent reaches the primary standard of the national sewage comprehensive emission standard (GB8978-1996), and reaches the miscellaneous domestic water quality standard of the PRC construction standard (CJ25.1-89), thereby being able to be recycled by serving as the reclaimed water.

The invention relates to an oil field operation device, in particular to an oil field workover treatment machine. The machine body is arranged on a hydraulic load-bearing traveling gear and is interlocked with the hydraulic load-bearing traveling gear. Hydraulic tongs connected with a telescopic bracket on the machine body can be extended out and retracted with the telescopic bracket. A clip seat is positioned below the hydraulic tongs and is arranged on a well head. An elevator which is suspended onto the machine body can reciprocate up and down. A faucet is positioned above the machine body and the clip seat; a pipe throwing device is arranged on the faucet and the machine body; and a clip unlocking device and a clip locking device corresponding to the elevator are arranged on the clip seat and the pipe throwing device respectively. A righting mechanism and a valve mechanism are further arranged on the faucet. A control cabinet is arranged on the machine body; and the clip seat, the hydraulic tongs, the elevator and the pipe throwing device are connected with a control system in the control cabinet respectively. The oil field workover treatment machine can be assembled and disassembled conveniently and rapidly, thereby not only facilitating transportation, but also changing the positions to meet the requirements of different work. Simultaneously the machine can be laid freely at a well field according to the practical conditions.

A machine has a boom, that is pivotally raised and lowered by a first cylinder, and has a load carrier that is pivoted at the end of the boom by a second cylinder. As a machine operator commands movement of the boom, the position of the load carrier is automatically altered by a controller to prevent a load from falling off the load carrier. The load carrier position with respect to the boom is altered in response to the amount of boom motion to maintain a constant position relationship between the load carrier and a chassis of the machine. Although the boom and load carrier move through different angular positions, the machine control is expressed in terms of the linear motion of the first and second cylinders.

The invention discloses a membrane microalgae photobioreactor for realizing in-situ solid-liquid separation. The membrane microalgae photobioreactor comprises a liquid level balance water tank, a reactor main body, a micropore diffuser, a hollow fiber membrane assembly and a constant flow pump. In the culture method of the membrane microalgae photobioreactor, a culture solution enters the reactor main body through the liquid level balance water tank, required nutrients are provided for the growth of microalgae, the liquid level is kept constant, in-situ solid-liquid separation of a cultured algae solution is realized by using the hollow fiber membrane assembly arranged in the middle of the reactor, water is drained out of the constant flow pump through the membrane assembly under the suction filtration action of the constant flow pump, microalgae cells are kept in the reactor, and harvesting of microalgae cells is performed periodically. The novel membrane microalgae photobioreactor capable of realizing in-situ solid-liquid separation is simple in structure and convenient to operate. The membrane microalgae photobioreactor can run under a high hydraulic load while microalgae culture is performed by using effluent and the like with low nitrogen and phosphorous contents in urban sewage treatment plants, so that the running efficiency of the photobioreactor is increased greatly.

In the hybrid-type construction machine, the control unit (60) includes a drive distributing unit (60-8) and an output condition calculating unit (60-9). The output condition calculating unit (60-9) calculates output conditions inclusive of an output setting of the electric storage device determined from a state of charge of the electric storage device (58), an output setting of the engine determined from a number of revolutions of the engine (50), a hydraulic load required value indicative of drive power required by the oil pressure generating unit, and an electric load required value indicative of electric power required by the electric drive unit. The drive distributing unit (60-8) determines output values of the electric drive unit and the hydraulic drive unit based on the calculated output conditions.

The invention discloses a wastewater treatment system for a novel intermittent water supply biological filter. The novel biological filter is improved from an ordinary biological filter, employs a mixed filter material with relatively small particle sizes to improve an effect of water treatment, and adopts a method of frequently alternating waterflooding states and air-drying states of a filter material layer and installing bottom vent pipe, to replace a natural ventilation for oxygenating and to avoid a blockage of the filter material layer. The intermittent water supply biological filter adopts broken stones (gravels) with particle sizes of 1-2 centimeters mixedly incorporated in particles, with the same size, of magnetite, graphite (or nut shell activated carbon), volcanic, limestone and activated zeolite, as filter materials for water treatment, and can adopt filter materials with diameters of 0.5-1 centimeters if pollutant concentrations of inlet water are relatively low. A height of the filter layer is 1.5- 2 meters; an intermittent quick water distribution is adopted; usually, a water distribution time for every water distribution is 20 minutes; an air-drying state lasts for 60-120 minutes; and a hydraulic load is designed for 2-4 m3 / m2d. The biological filter has the advantages of good water quality for outlet water, high hydraulic load, low investment, low energy consumption, low operation cost and simple management, and is particularly suitable for treating domestic wastewater of small cities.

The invention relates to a groundwater organic pollutant restoration device, which includes: a pumping system, a water distribution system, a reducing medium filling area, an annular hydraulic load buffer area, an adsorption-advanced oxidation medium filling area, a rapid seepage area and an online monitoring system. According to the invention, water is pumped by the pumping system, water is uniformly distributed by the water distribution system, reduction reaction and oxidation reaction are realized step by step in the reducing medium filling area and the adsorption-advanced oxidation medium filling area so as to realize the purpose of removing organic pollutants from groundwater, and the restored groundwater can rapidly seep into an underground aquifer. Thus, redox reaction can be performed in stages, groundwater organic matters can be efficiently removed, and the disposal problem of the restored groundwater can be effectively solved. The invention also relates to a method for restoration of groundwater organic pollutants by the restoration device.

A hydraulic system comprising a receiving body with electrohydraulic valve, with at least one hydraulic pump, and with channels for connecting the pump to at least one hydraulic load. A pulsation situation arises as a result of the delivery of a pressure medium by the pump and / or as a result of pressure medium being withdrawn by the load. At least one damping unit is provided, having a plurality of pulsation damping means such as, in particular, a damping chamber, and orifice. The hydraulic system provides a uniform and cost-effective solution for different operating situations and prevents a decrease in comfort. The damping unit has at least one switching means for adjusting the action of said damping unit to a varied pulsation situation by connecting or disconnecting one or more damping means.

The invention relates to a sponge anti-clogging strengthening compound flow constructed wetland domestic sewage treatment device, which comprises a pretreatment region, a main reaction region and an exhalant region from left to right, wherein the pretreatment region comprises an intake pipe, a water distributor, a sponge, an air inlet pipe and a porous aerator; the main reaction region is formed by connecting three-stage vertical flow constructed wetland in series, i.e. a first unit, a second unit and a third unit which are separate; the bottom of the main reaction region is provided with a gravel water-distribution layer; a biological porcelain granule layer is distributed in the first unit; the top of the biological porcelain granule layer is covered with an aquatic plant root region; gravel and a steel slag layer are distributed in the second unit; the tops of the gravel and the steel slag layer are provided with an aquatic plant root region; a zeolite layer is distributed in the third unit; the top of the zeolite layer is provided with an aquatic plant root region; each unit is divided into a left grid and a right grid; the left grid is higher than the right grid; the pretreatment region and the main reaction region are connected by a perforated water-distribution plate which is arranged at one end of the gravel water-distribution layer; and the exhalant region comprises anexhalent pipe. The invention has the advantages of high pollutant removal rate, stable system operation, greatly improved hydraulic load, small floor area, low operation and maintenance costs, and the like.

The invention provides a subsurface flow and surface flow complex manmade wetland. The complex manmade wetland comprises a land, a subsurface reservoir and a surface reservoir, a surface collecting pool and a subsurface collecting pool. One side of the land is provided with the subsurface reservoir and the surface collecting pool, and the other side of the land is provided with the subsurface collecting pool and the surface collecting pool. The subsoil of the land is filled with a gravel layer, and the upper soil is covered with a pastoral earth; the filling depth ratio between the gravel layer and the pastoral earth is 3: 2. Emersed plant, floating plant and submerged plant are planted on the pastoral earth of the upper soil of the land; the subsurface collecting pool is communicated with the surface reservoir through a water pipe equipped with a valve. The invention combines the advantages of subsurface wetland and surface wetland such as high water purification efficiency, high water quality, high hydraulic load, low investment and operational charge, and good treatment effect; according to actual need, a plurality of measures can be used such as alternatively adopting subsurface flow and surface flow, subsurface flow and surface flow.

The invention discloses a simulation test device and a test method for grassed swales. The device comprises a runoff generating device, a runoff flowing device, a runoff collecting device and a monitoring device, wherein the runoff flowing device comprises a V-shaped slot and an angle adjusting structure for adjusting included angles between the longitudinal slope of the V-shaped slot and the twoside faces of the V-shaped slot; the two side faces of the V-shaped slot are provided with a plurality of sampling holes; the bottom of the V-shaped slot is provided with a supporting structure; the V-shaped slot is filled with soil; and the surface of the soil is provided with a surface treatment layer. Testing water with different contaminant concentrations is prepared and different hydraulic loads and flow rates are set according to the purposes of the tests; and the influence of different earth surface measures on the utilization efficiency of the grassed swales and the runoff contaminantregulation can be known from the observation of soil moisture and the monitoring of surface water quality and contaminant concentration of soil solution. Thus the device and the method have great significance for water conservation and municipal rainfall runoff contamination.

The invention provides a method for hanging a membrane in a sludge internal circulation biological filter. The method comprises the following steps: mixing acclimated sludge and wastewater, adding nutrition, and injecting into the biological filter for aeration; at the same time, stepwise starting internal circulation from bottom to top along the height direction of the filter, and making microorganisms fully contacted with a filter material and attached to the filter material for growth; after a period of culture, discharging mixed liquor, adding high concentration wastewater to continue aeration culture, and exciting the activity of the attached microorganisms; and after a membrane is formed, discharging the high concentration wastewater, continuously introducing water, and making the hydraulic load from low to high until forming a stable biological membrane. The method utilizes current disturbance action formed by the internal circulation of the sludge and water mixed liquor in the biological filter to overcome sludge deposition, strengthens the adhesive ability of the microorganisms on the surface of the filter material, improves local membrane hanging effect, and improves the whole membrane hanging efficiency of the filter and the shock load resistance of the biological membrane.

The invention relates to a filtration-fabric anti-clogging strengthening compound flow constructed wetland domestic sewage treatment system comprising a pretreatment region, a main reaction region andan exhalant region, wherein the pretreatment region comprises a framed tube, an intake pipe, a filter bag, an air inlet pipe and a porous aerator; the main reaction region is formed by connecting a first unit, a second unit and a third unit in series; the bottom of the main reaction region is provided with a gravel water-distribution layer; a biological porcelain granule layer is distributed in the first unit; gravel and a steel slag layer are distributed in the second unit; a zeolite layer is distributed in the third unit; each unit is divided into a left grid and a right grid; the left gridis higher than the right grid; the top of an aquatic plant root region in the left grid is provided with a triangular weir; the pretreatment region and the main reaction region are connected by a perforated water-distribution plate which is arranged at one end of a gravel water-distribution layer; and the exhalant region comprises an exhalent pipe which is arranged at one side of the main reaction region. The invention has the advantages of high pollutant removal rate, stable system operation, greatly improved hydraulic load, small floor area, low operation and maintenance costs, and the like.

Parasitic hydraulic loading on an engine is significantly reduced during cold starts by using an unloader valve to divert the flow of hydraulic fluid from a hydraulic pump to a hydraulic actuator, i.e., load source, recirculating the hydraulic fluid between the hydraulic pump and the unloader valve.

The invention discloses a high-speed water-supply biological aerated filter (BAF) and a method of applying the filter to pre-purify micro-contaminated raw water. The high-speed water-supply biological aerated filter comprises two UBAFs which are symmetrically arranged on two sides of a water distributing channel which is arranged on the upper part of a pipe rack where pipes are arranged. The water distributing channel comprises a general water-feeding channel, a first distributing channel, a second distributing channel, a strainer frame and a fixing grid provided with strainers. The micro-contaminated raw water pre-purifying method is as follows: the raw water enters a water distributing zone on the lower part of the filters after distributed and filtered by strainers, and then the water is distributed by filter heads and flows through a pebble bearing layer and a double-layer ceramsite filtering-material of the filters from bottom to top. The same-direction steam and water and the adoption of the double-layer light water-supply ceramsite filtering-material can delay the acceleration lost by the filter heads and provide the essential hydraulic conditions for the high-speed filtering and the collective adoption of a blast aeration system. The invention has high hydraulic load, low manufacturing cost and energy-conserving capability, and can guarantee the efficiency of purifying organisms and ammonia nitrogen. The invention is suitable for the biological pre-purifying to the micro-contaminated water supply.

A dynamic centering apparatus, suitable for centering a workpiece on a work surface, comprising a plurality of hydraulic actuators coupled to individual cells of a hydraulic pump.

The present invention discloses one kind of composite underground percolated sewage treating system with high hydraulic load. The system consists of a water amount regulating and oil eliminating and depositing unit, an anaerobic digesting and filtering unit, a sewage distributing tank and a high load underground percolating unit connected through water pipeline. The present invention has greatly raised sewage load, expanded application range and lowered engineering cost. The system has low running cost, no need of special land and capacity of producing reuseable intermediate water, and is suitable for in-site treatment of domestic sewage and organic industrial effluent.

A process for treating sewage zeolite as filter material in aerating biological filter pool is disclosed. It features that the life sewage to be treated contains COD (40-120 mg / L) and ammonacal nitrogen (10-40 mg / L), the height of filter material is 2-4 m, hydraulic load is 2-5 m / h, the intensity for pneuamtic-hydraulic counter-flushing is 12-18L / sq.ms, the water flushing intensity is 8-12 L / sq.m.s, and the water rinsing intensity is 8-12 L / sq.ms. The zeolite has 3-6 mm for granularity, 1900-2200 Kg / cu.m for density, 3-5 for Mohs'hardness and 3-6 kg / cu.m for ammonia ion exchange capacity. Itsadvantages are high effect and high impact resistance.