102results about How to "Eliminate turbulence" patented technology

The invention discloses an integrated method of lake water environment management. The integrated method of the lake water environment management comprises the steps of making first-phase preparations for lake water environment integrated management, analyzing a landform, designing the type of a side slope, determining the self-cleaning capacity of a lake, controlling pollution sources around the lake, conducting a silt-removing treatment on a water body, managing the side slope, conducting ecological restoration on the lake, and conducting monitoring and emergency treatment on the lake. The integrated method of the lake water environment management is used for enabling a lake water environment biologic chain to be effectively restored and consolidated and enabling the lake side slope to be stable.

Disclosed is a system and an associated valve assembly that are adapted to increase the efficiency of an upstream water meter. By way of the valve assembly entrained water bubbles can be removed from a water supply. This, in turn, increases the density of the water running through the water meter. This ensures that the water meter is not inaccurately including entrained air as metered water. The result is more accurate water readings and reduced utility bills.

The Shrouded Vertical Axis Dual-Turbine Generator is a system consisting of a superstructure in the shape of a symmetrical foil, with a vertical axis turbine set into the camber of each side. The leading edge of the superstructure increases the speed of the water or air current passing around the generator. The trailing edge creates a slip stream which reduces turbulence. Shutters on each side of the superstructure control the amount of current in contact with the turbines by sliding forward or rearward to increase or decrease flow to the turbines. The turbines are modular in design and can be customized into longer or shorter turbines, depending on application.

The invention relates to an underwater revetment based on ecological bags and a water body ecological management method. The method comprises a first step of dredging and solidifying, a second step of establishing a water bottom foundation, a third step of clearing up the revetment surface, a fourth step of paving the ecological bags in a step-shaped lamination dislocation mode from the top of the water bottom foundation, a fifth step of planting submerged plants on the ecological bags, a sixth step of stopping river closure or beginning to coffer after the water quality conforms to or superior to the fourth scale of the national surface water environment criterion GB/3838-2002, wherein when the water quality does not conform to or inferior to the fifth scale of the GB/3838-2002, microbial preparation is added into the water according to the water quality measuring result, and a seventh step adding filter feeder fishes or/and herbivorous fishes, shrimps and demersal mussel animals. The method guarantees that floodwater can be drawn off based on the fact that the underwater revetment structure of rivers and lakes is safe, and the cooperative management capacity for the water body is improved through ecological restoration of the underwater revetment.

A bag house air filtration system with minimal recirculation uses new inlet airflow patterns and cleaning processes. Inlet air enters the bag house. An input plenum changes the velocity profile. Dirty inlet air is split into two plenums, and then passed through guide vanes. A clean air plenum contains a series of individual compartments with a pre-set number of filter bags that are effectively cleaned during a single cleaning cycle. Each individual compartment has a door or louver mounted above the bag openings that is opened and closed during the cleaning cycle. An automatic control system continuously senses bag house pressure drop and activates the cycle when needed. The doors open and close in a pre-set pattern to drop the dust cakes from the bags and restore air flow to normal pressures. Closing a door mounted above the bags creates a reversal of pressure that removes the dust cake.

Disclosed is a system and an associated valve assembly that are adapted to increase the efficiency of an upstream water meter. By way of the valve assembly entrained water bubbles can be removed from a water supply. This, in turn, increases the density of the water running through the water meter. This ensures that the water meter is not inaccurately including entrained air as metered water. The result is more accurate water readings and reduced utility bills.

A variable pressure reducing device for reducing high pressure in steam and hot water samples forces the liquid through an annular passageway between a pair of rods within a complementary pair of tubes. The flow rate through the rod-in-tube device, or the pressure drop across the device, is adjustable by means of a rotatable guide screw for adjusting the position of the rods within the tubes. The rods are tapered to provide a smooth flow of liquid through the device. The seal around the guide screw is self energized by means of a seal jacket between a valve gland and a stem portion of the guide screw constructed so that the biasing force of a spring on the seal jacket is supplemented by pressure from liquid flowing through the device The guide screw is centered within the valve gland to keep the guide screw properly aligned, particularly when the device is used with a motor for rotating the guide screw to adjust the position of the rods.

An axial-flow type fan includes a fan housing consisting of an air inlet, an air outlet and an air channel, and a fan wheel consisting of a hub and fan blades. The air channel of the fan housing accommodates the fan wheel which has end-cornered cutting blades proximate the air outlet of the fan housing. When the fan wheel is rotated, the end-cornered cutting blades are able to eliminate air turbulence and air noise in the air outlet of the fan housing.

The present invention relates to controlled airflow and air distribution within a laboratory safety enclosure and in particular, to turbulence-free airflow within a laboratory fume hood. The fume hood of the present invention has a work chamber and an access opening having an upper edge. A horizontal air deflector structure is positioned adjacent to the upper edge of the access opening to divert a portion of air entering the access opening upwardly within the chamber, whereby the diverted air eliminates an airflow eddy current.

A fluid end assembly comprising a housing, valve bodies, seals, seats, springs, and other associated parts, paired with a suction manifold that facilitates bi-directional fluid flow. The suction manifold of this invention is designed to preserve fluid energy that will ensure complete filling of the cylinder in extreme pumping conditions. The suction manifold utilizes a chamber design positioned immediately below the suction valves, eliminating all connecting ducts. Alternate embodiments of this invention include a suction manifold with an integral fluid dampeners or stabilizers.

The invention discloses a narrow tube wind gathering power generation centrifugal wind power engine which relates to a comprehensive discipline theory of inertial centrifugal effects, centripetal force, dynamic balance, pressure gradient force, viscous force, blade molding, spiral wind attitude causes, turbine effects and the like and a major core technology and belongs to the technical field of the narrow tube wind gathering power generation centrifugal wind power engine. The narrow tube wind gathering power generation centrifugal wind power engine comprises a butt barrel, a front flange, a fluid inlet, a regulating plate A, a fixing ring A, a strutting piece A, an annular ring A, a regulating plate B, a fixing ring B, a regulating plate C, a fixing ring C, a stepped shaft, a strutting piece B, a wind drain channel, an annular ring B, a blade C, a blade B, a blade A, a butt flange, a radial ring A, a radial ring B, a bearing A, a bearing B, a shell A, a shell B, a shell C, a shaft seat A, and a shaft seat B.

The invention discloses a mixed combustion visual combustor, and belongs to the technical field of rocket engines. The combustor comprises an air inlet assembly, a rectification section, a combustionchamber and a coaxial ignition torch; the rectification section is coaxially installed between the air inlet assembly and the combustion chamber; the coaxial ignition torch is installed on the outer circumferential face of the rectification section in the radial direction of the rectification section; the rectifying section is of a columnar structure with a rectangular through hole in the axial direction; a round flange plate and a square flange plate are arranged at the two ends of the rectifying section respectively; the rectifying section is coaxially and hermetically connected with the airinlet assembly through the round flange plate and coaxially and hermetically connected with the combustor inlet end through the square flange plate; a circular hole is formed in the peripheral wall of the rectifying section; the rectifying section is communicated with the coaxial ignition torch through an assembly ignition base; the rectification section is additionally arranged to be matched with the porous injection plate, so that irregular vortex pulsation of airflow is eliminated, and the airflow is stably introduced into the combustion chamber; the section of a flow channel in the rectification section is kept consistent with the section of a flow channel of the combustion chamber, so that a backflow area, namely a vortex structure, is effectively avoided; and therefore a high-quality flow field structure can be obtained in an experiment.

The invention provides a branching ring type oxidation ditch with adjustable gravity flow. The interior of the invention is an O type anaerobic zone, the exterior is an O type aerobic zone and the middle part is a C type anoxic zone. The intersection zone of a C type nick and the O type aerobic zone is a mixing zone, wherein, the radian of a C type circular arc separating wall that forms the anaerobic zone is 246 degrees, the length of the C type circular arc separating wall that stretches into the mixing zone is 0.41R and the R is the radius of a concentric circle separating wall of the aerobic zone, the angle Alpha at a starting end point of the C type circular arc separating wall that can be adjusted is equal to 10 degrees- 107 degrees and the alpha is an included angle formed by a line connecting the starting end point and the center of the C type circular arc separating wall and an adjustable branching wall. The structure can weaken the turbulence in the ditch, increase the volume occupancy of the plug-flow fluid in the ditch, promote the efficiency of a reactor, prolong the stopping time at the aerobic zone and the anoxic zone, decrease the stopping time at the mixing zone and the occupancy of a dead zone and leave out the energy consumption caused by a mechanical stirrer. Besides, the returning flow that enters into the aerobic zone and the anoxic zone can be flexibly adjusted and controlled based on different water quality, so as to gain stable nitrogen and phosphors removal effect that fully meets the discharge standards of the state.

The invention relates to the technical field of mineral separation equipment and discloses a fan-shaped material distributor. The fan-shaped material distributor comprises a box body and a material distribution chute, wherein the box body is divided into pulp inlet trough and a pulp outlet trough by an overflow plate; a valve and a plurality of on-line ore pulp concentration meters are arranged on the inner wall of the pulp inlet trough; a diluting water pipe is arranged at the upper part, parallel to a pulp outlet, of the pulp outlet trough; a controller and a pump for supplying water to the diluting water pipe are arranged on the outer wall of the box body; the controller is connected with the on-line ore pulp concentration meters, the valve and the pump respectively; the material distribution chute is shaped like a fan and comprises side plates, a bottom plate, a baffle plate, flow guiding plates and a plurality of buffer plates; and a flow stabilizing grate is arranged in the pulp inlet trough. The controller of the fan-shaped material distributor can carry out adjustment through the valve and the pump according to the treatment capacity of a downstream magnetic separator to obtain appropriate ore pulp. The ore pulp is mixed and guided by the material distribution chute to uniformly flow to a bottom box along a cylinder of the magnetic separator.