51results about How to "Reduce pumping" patented technology

Methods and systems are provided for controlling an engine system with a variable cam timing device. In one example, the variable cam timing device is operated to adjust engine valve timing differently at engine stop based on whether the engine stop is in response to an operator request or in response to an automatic controller initiated engine stop without an operator request.

The invention is a rubber air water stopping air cell, including an air cell body, leading an air tube out of the body and there is a ball valve set on the air tube, where the middle of the body is cylindrical and two ends are semicircular or elliptic, and the body is composed of inner surface layer, middle layer and outer surface layer, there are pull rods set at the two ends of the body, respectively, where the pull rod is set with a ring. Its advantage: when making urgent repair on pipe obstacles, it can largely reduce quantity of pumping water and the operating procedure is simple, and it saves time and labor, and does not influence industrial production and normal water supply to townsmen.

A liquid pump is provided in which pulsations can be properly absorbed even if the pump is driven at a high frequency. A pulsation absorbing unit for absorbing pulsation includes a pulsation absorbing housing disposed on a pump housing member, a second diaphragm attached to the pulsation absorbing housing member and defining a pulsation absorbing chamber communicating with a liquid outlet passage of a liquid pump unit, and a disc spring for biasing the second diaphragm toward the pulsation absorbing chamber.

Apparatus and methods for removing jitter and stabilizing the feed back system of a torsional hinged device with minimal changes to the system. The stabilization is accomplished by introducing a selected amount of lateral motion (in addition to the rotational motion) by creating asymmetry in the oscillating device or the drive torque applied to the device.

The invention provides a foundation pit anti-seepage and settlement control method based on a stereoscopic curtain-well group system. The system is composed of vertical curtains of unequal depths, a horizontal curtain grid and a precipitation well group in a foundation pit. The horizontal curtain grid structure is established based on traditional vertical curtains of unequal depths, and a limited water blocking body in an underground space is formed; by reasonably optimizing the well group structure, and the head loss during underground water movement is increased by sufficiently utilizing the curtain energy consumption theory, so that the purpose of decreasing the drawdown of underground water outside the foundation pit and accordingly decreasing the settlement amount is achieved. According to the stereoscopic curtain-well group system, the wall-well functional mechanism is utilized sufficiently, the problem of instability of the foundation pit caused by seepage can be effectively solved, and foundation pit dewatering is controlled so that ground settlement amount can be prevented; meanwhile, compared with horizontal totally-closed curtains, the project amount and project cost are greatly reduced, and great social benefits and economic benefits are achieved.

The invention discloses a water-rich stratum structure with a soft upper part and a hard lower part and a construction method. The structure comprises continuous walls, wherein the continuous walls comprise a transverse continuous wall and a vertical continuous wall; the transverse continuous wall and the vertical continuous wall are used for dividing a water-rich stratum plane with the soft upper part and the hard lower part into cabins; the transverse continuous wall is a certain distance away from a primary support outer contour; the vertical continuous wall enters a waterproof medium-micro weathered rock stratum to separate underground water; a plurality of dewatering wells are arranged in a cabin dividing enclosing range of the continuous walls; after the continuous walls are constructed and closed, continuous dewatering is carried out in the cabins; and after the continuous walls are subjected to cabin dividing dewatering, grouting reinforcement is carried out to form a grouting layer. According to the water-rich stratum structure with the soft upper part and the hard lower part and the construction method, water interception, dewatering, reinforcement and mining method tunnel excavation can be realized in a limited range, the influence on the surrounding environment is reduced, the problems of large excavation depth, high manufacturing cost and high risk of an open excavation method of a deep-buried structure of the water-rich stratum with the soft upper part and the hard lower part are effectively solved, and the water-rich stratum structure with the soft upper part and the hard lower part and the construction method are successfully applied in practical engineering.

The invention belongs to the field of water treatment devices. The invention in particular relates to a ceramic film oxygen-transfer biofilm reactor. The biofilm reactor is characterized by comprisinga shell, a ceramic film module, a water distribution pipe and an aeration pipe are sequentially arranged in the shell from top to bottom; a plurality of water production holes are distributed in thewater distribution pipe; a plurality of aeration holes are distributed on the aeration pipe, a water production tank is arranged at the upper part of the side surface of the shell, a water outlet is arranged at the bottom of the water production tank, the side surface of the shell is also provided with a film module air inlet communicated with the ceramic film module, a film module air outlet, a raw water inlet communicated with the water distribution pipe, and an aeration port communicated with the aeration pipe, and the bottom of the shell is provided with a sludge discharge and a vent nozzle. The ceramic film oxygen-transfer biofilm reactor has the advantages that: 1, the installation is easy; 2, the sludge amount is small; 3, modular design is adopted, and the occupied area is small; 4, high efficiency and energy saving.

The invention discloses an integrated oriented vacuum well point pipe. The integrated oriented vacuum well point pipe comprises an outer layer pipe; an inner layer pipe is sleeved with the outer layerpipe; the outer layer pipe is downwards in threaded connection with a short pipe; the short pipe is downwards welded with a partition plate; the partition plate is downwards welded with a hollow cone; a plurality of water outlets are formed in the side walls of the hollow cone; the bottom end of the outer layer pipe is connected with the partition plate; a check valve is arranged on the partitionplate in the inner layer pipe; the top end of the inner layer pipe is bent, and then stretches out of the top of the side wall of the outer layer pipe; a seal ring is arranged between the outer layerpipe and the inner layer pipe at the top end of a vacuum pumping area; a plastic drainage barrel sleeves the inner layer pipe; a plurality of bulges are distributed on the plastic drainage barrel atintervals; a plurality of inner pipe water inlets are formed in the inner layer pipe; a plurality of outer pipe water inlets are formed in the outer layer pipe; a geotextile layer is mounted on the inner wall of the outer layer pipe; and a barrel-shaped metal net layer is arranged on the inner surface of the geotextile layer. A hoist is not needed in the mounting process, a drainage channel does not depend on poured coarse sand, sludge blocking can be prevented on a soft soil layer, oriented water precipitation is achieved, the influence on an environment is small, and the cost is relatively low.

An internal combustion engine (10) has at least one combustion chamber (15) defined by a piston (13) accommodated in a cylinder (11). The method of operating the engine (10) comprises opening an exhaust means (30) as the combustion chamber (15) expands to permit fluid to discharge from the combustion chamber (15), opening an inlet means (20) as the combustion chamber continues to expand to admit the intake air into the combustion chamber (15); closing the exhaust means (30) as the combustion chamber still continues to expand to interrupt discharge of fluid from the combustion chamber (15), and closing the inlet means (20) to interrupt admission of the intake air into the combustion chamber (15). With this operating sequence, scavenging of the combustion chamber (15) is incomplete and so there is a relatively large residual fluid within the combustion chamber.

The invention discloses a method and a device for gradient utilization of the heat of an oxygen-enriched combustion unit. The method comprises the following steps of: (A) dividing the outlet smoke of a boiler (1) into a first part of smoke, a second part of smoke and a third part of smoke, feeding the first part of smoke into a hearth of the boiler (1), preheating the oxygen fed into the boiler (1) by the second part of smoke, and heating the low-pressure feed water by the third part of smoke; (B) feeding the second part of smoke and the third part of smoke into a smoke condenser (11) after heat exchange, condensing to normal temperature and feeding into a smoke compressor (8); (C) compressing air by an air compressor (5), cooling by a compressed air low-pressure feed water heater (6) and feeding into an oxygen generation system (7), and feeding the oxygen generated by the oxygen generation system (7) into an oxygen preheater (2); and (D) heating the low-pressure feed water of the boiler. According to the invention, the power generation efficiency of an oxygen-enriched combustion power station is improved, and the CO2 trapping cost of the coal-fired power plant is reduced.

The invention discloses a flood prevention device for a transformer substation. The flood prevention device comprises a vehicle frame, a water pump, a flowmeter and a PLC; the vehicle frame comprisesa top plate and four supporting legs arranged below the top plate, and universal brake wheels are arranged on the bottom end faces of the supporting legs; the water pump is arranged on the top plate,a water pumping port and a water outlet are formed in the water pump, the water pumping port is connected with a water pumping pipe, and a filter cover is arranged at the end of the water pumping pipe; the flowmeter is arranged on the water pumping port and used for monitoring the flow of pumped water; and the PLC is installed on the top plate, the flowmeter is electrically connected with an inputend of the PLC, and a motor of the water pump is electrically connected with an output end of the PLC, such that the water suction pump is convenient to carry, workers can be reminded to clean a filter screen in time during water pumping, and the water pumping efficiency is guaranteed.

The invention discloses a spiral composite constructed wetland system which comprises a main support body and a spiral stepped support frame arranged on the main support body, and the spiral stepped support frame is provided with a plurality of constructed wetland reactors connected in series from top to bottom in space; each constructed wetland reactor comprises a subsurface flow constructed wetland and a surface flow constructed wetland. According to the invention, on the basis of efficiently purifying sewage, the space utilization rate is increased, the land is saved, meanwhile, an environment beautifying function is achieved, and positive significance is generated for construction of constructed wetlands under the condition of land shortage.

Embodiments of this invention provide an integrated system for processing ore feedstock and RO treatment utilizing the principals of pumped storage hydroelectric technology including the use of an upper reservoir and lower reservoir. The integrated system includes a first subsystem that generates waste associated with processing the ore feedstock. In the integrated system, the waste includes the treatment of contaminated water. The integrated system further includes a second subsystem that treats the contaminated water included in the waste to generate recycled water and transmits the recycled water to the first subsystem. The integrated subsystem may also incorporate solar and/or wind power generation plants as a power source for the integrated system.

The invention discloses a dewatering treatment method for a steeply inclined strip-shaped interbed composite stratum foundation pit. The dewatering treatment method is characterized in that an open-cut hall shallow pit is included, an open-cut hall deep pit is included, a station shallow pit is included, a deep shallow pit boundary is included, an end well deep pit area is included, a rail-crossing cable deepening area is included, a water collection pit is included, an underground diaphragm wall is included, inner limestone fracture grouting is carried out, wall bottom limestone fracture grouting is carried out, a pressure reduction well is included, a drainage well is included, a confined water observation well serving as an emergency recharge well is included, and a down-turning beam pit groove is included. The dewatering treatment method is particularly suitable for underground water treatment of the composite stratum foundation pit with upper old city miscellaneous fill, middle hard plastic clay and lower bed rock. It is summarized that the dewatering treatment method can achieve total closing, partial grouting, upper drainage, lower pressure reduction, bottom collection and drainage and external measurement and irrigation. The dewatering treatment method can reduce the number of dewatering wells and the water pumping amount, and the construction period and cost are saved;and meanwhile, the safety of the foundation pit and the surrounding environment can be guaranteed, and good economic and safety benefits are obtained.

The invention relates to a sealing element coating device and a sealing element coating method. The sealing element coating device comprises a distributed cavity structure and a gas guide pipe. The distributed cavity structure comprises a plurality of distributed cavities, and each cavity is matched with a sealing element needing to be coated; a gas guide pipe is arranged in each cavity and is used for introducing coating gas; during film coating, the film coating part of the sealing element is embedded into the cavity and is connected with the cavity in a sealing manner; the cavity is in a vacuum state, and coating gas is input into the gas guide pipe; the coating gas is introduced into the cavity, and a thin film is deposited on the surface of the coating part of the sealing element; according to the technical scheme, the coating efficiency can be improved, the coating cost is reduced, the coating effect of the sealing element is improved, and the production efficiency of the sealing element is improved.