36results about How to "Large pressure loss" patented technology

A separation membrane-porous material composite 1 being improved influx and selectivity, which comprises a porous material and a separation membrane formed on the porous material, wherein a composite layer 65 having a thickness of 1 mm or less is provided at the interface between the porous material 61 as a dense layer 64 and the separation membrane 66 being formed as a carbonaceous film.

To enable an air velocity of sampling air to be precisely measured, a smoke detector (S) includes: a smoke detection part (22) connected to a sampling pipe (11); a fan (12) that sucks sampling air (SA) into the sampling pipe; and an air velocity sensor (15) that measures an air velocity of the sampling air within the sampling pipe. The air velocity sensor (15) is disposed at a primary side of the fan (12), and a straightening vane (25) is disposed between the air velocity sensor (15) and a suction port (12a) of the fan (12).

The invention discloses early strength cement grout with low dehydration ratio for grouting. The stable early strength cement grout for pre-grouting of coal mineshaft surface comprises the following components in part by weight: 100 parts of silicate cement, 80-120 parts of water, 10-40 parts of suspending agent, 1 part of inorganic sodium salt and 0.03-0.1 part of organic alcohol early strength agent. The cement grout utilizes physical and chemical functions of composite admixture, improves the suspending stability of the cement grout and the early compression strength of a concretion body, improves the flow deformation feature and the movable shearing force of the grout and realizes controllable grout diffusion distance.

An aircraft engine includes an afterburner which has a flame stabilizer. The flame stabilizer maintains a flame generated from a mixed gas of a combustion gas and air. The flame stabilizer includes multiple gutters each configured to generate a flame stabilization area for the flame on its downstream side. Each gutter is formed from: a curved apex section having a stagnation point; and flat plate-shaped side surface sections integrally formed on the respective two sides of the apex section. Each gutter has a V-shaped cross-sectional shape which is opened to the downstream side. At least one through-hole is formed only in each side surface section of each gutter.

A wind-turbine gearbox system includes an input gear stage having mating gear surfaces finished to a surface roughness of less than 0.25 micron and at least one bearing supporting the input gear stage. A lubrication circuit is arranged to deliver lubricant to the input gear stage and the bearing during operation of the wind-turbine and includes an inline filter for removal of particles of less than 2 micron from the lubricant prior to delivery. A lubricant for use in the system may have a relatively low viscosity compared to conventional wind turbine gearbox lubricants.

A water discharger according to the invention comprises a housing having a columnar space inside, a core having a core inner channel inside allowed to move in the space while dividing the columnar space into a first and a second pressure chamber, a water discharge tubular body having a water discharge channel communicating with the core inner channel and reaching the outside of the housing, a first water inlet port for introducing fluid to the first pressure chamber, a second water inlet port for introducing fluid to the second pressure chamber, a first introducing port for introducing fluid from the first pressure chamber to the core inner channel, a second introducing port for introducing fluid from the second pressure chamber to the core inner channel, a valve body for changing the opening of the first and the second introducing port, and control means for inverting the size relation of the opening of the first and the second introducing port when the core reverses its moving direction. This enables repetitive linear action or rotary action using hydraulic power with a compact and simple structure.

A muffler is capable of sufficiently reducing flow noise, discharge noise, vehicle noise, and cabin noise, preventing a pressure loss, and improving output power. The muffler has a muffler body, an upstream pipe that opens in the muffler body, and a downstream pipe that opens in the muffler body. An opening is formed in a side wall of the downstream pipe in the muffler body. The opening consists of many small holes arranged in an elongated area extending in an axial direction of the downstream pipe.

A valve for the fuel system of a turbine engine works to relieve high pressure transients in the liquid fuel side of the turbine engine arising from the elevated ambient temperatures of operation of the turbine on gaseous fuel. The valve also prevents significant pressure losses during turbine start-up and sustained operation. The valve is bi-stable and has a liquid fuel driven poppet that toggles between one of two closed positions to interrupt flow through the valve when below a lower pressure limit and when above an upper pressure limit. The poppet moves to an intermediate position temporarily to permit pressure relief. A method of operating such a valve is also provided.

A drive steel member for driving engagement with a rotary drilling machine, including a chuck adapter having main body and chuck seating means and being constructed and arranged in fixed, sealed relation on one end of the drive steel member.

A shaft tool with a machining section and a cylindrical shaft which comprises at least one internal coolant / lubricant duct which on its end facing away from the machining section comprises at least one orifice, wherein the shaft forms a conical fitting surface that encloses the orifice. A device comprising a shaft tool and a connection piece, the connection piece comprising a centric coolant / lubricant supply duct which exits in an apex region of an inner cone which accommodates in a positive-locking manner the conical fitting surface of the shaft tool, the conical fitting surface facing the inner cone.

A fuel cell module includes a first area where an exhaust gas combustor and a start-up combustor are provided, a second area where a reformer and a heat exchanger are provided, and a third area where an evaporator is provided. A stress relaxing portion for relaxing heat stress is provided at least along a border between the first area and the second area, along a border between the second area and the third area, or along an outermost portion of the third area.

Disclosed herein is a cool air circulation type axial flow fan for a refrigerator. The fan comprises a plurality of spaced blades mounted on the outer circumference of a hub for blowing cool air to a freezing chamber and a chilling chamber of the refrigerator. Several important design factors, such as the number of blades, a sweep angle, a pitch angle, a rake angle, a maximum camber position, and a maximum camber ratio of each of the blades, of the fan are optimally determined, whereby a noise generated over a wide frequency band is remarkably reduced. Furthermore, power consumption is reduced with reduction of flow loss.

The invention discloses a filter material for a filter element, a preparation method and application of the filter material. The filter material comprises non-woven fabric. The non-woven fabric at least comprises, by weight, above 20% of skin-core complex fibers and above 10% of fire resistant fibers. The non-woven fabric is obtained by heat bonding. The preparation process of the filter material is simple and environmental-friendly. The filter material has not only good fire resistance, but also good strength, good air permeability and long service life. The filter material can be widely applied to the field of air filtration.

An exhaust gas purifying device includes a honeycomb catalyst body, a plugged honeycomb structure and a can member to receive therein the honeycomb catalyst body and the plugged honeycomb structure, and the plugged honeycomb structure disposed at a position on a downstream side of the honeycomb catalyst body is designed so that a pressure loss in an end face central region of at least one of a second inflow side end face and a second outflow side end face of a second honeycomb substrate is larger than a pressure loss of an end face circumferential region positioned around the end face central region.

A CO sensor (250) which detects CO contained in the air supplied to a fuel cell (200) by a compressor (202), and a sensor (206) which detects the state of charge (SOC) of a battery (207), are provided in a fuel cell vehicle. A controller (254) controls operation and stop of the fuel cell based on CO concentration and the state of charge of the battery (207), and stops operation of the fuel cell (200) at a lower CO concentration the higher the state of charge of the battery (207).

The invention relates to a dual-cycle reverse osmosis device and a reverse osmosis treatment method. The dual-cycle reverse osmosis device comprises a single-cycle water saving loop communicated with pipelines of an aftertreatment device and a supercharging device by a water inlet electromagnetic valve between a water inlet pipe and a thick water discharge outlet, wherein a loop is additionally arranged on the single-cycle water saving loop to form a dual-cycle water saving loop. The dual-cycle water saving loop consists of a first tee pipe, a second tee pipe, a third tee pipe, a fourth tee pipe, one-way valves, a one-way throttle valve and a pulse electromagnetic valve, wherein the first tee pipe and the second tee pipe are arranged between the water inlet electromagnetic valve and the supercharging device; the third tee pipe and the fourth tee pipe are arranged between a thick water opening of the aftertreatment device and the thick water discharge outlet and communicated with each other through a pipeline; the one-way valves limit water to only flow to a water inlet opening of the supercharging device and are respectively arranged between the first tee pipe and the fourth tee pipe as well as between the second tee pipe and the third tee pipe; the pulse electromagnetic valve is arranged between the third tee pipe and the fourth tee pipe; a throttling device is arranged between a water outlet of the pulse electromagnetic valve and the thick water discharge outlet.

A fuel cell module includes a first area where an exhaust gas combustor and a start-up combustor are provided, a second area where a reformer and a heat exchanger are provided, and a third area where an evaporator is provided. A stress relaxing portion for relaxing heat stress is provided at least along a border between the first area and the second area, along a border between the second area and the third area, or along an outermost portion of the third area.

To enable an air velocity of sampling air to be precisely measured, a smoke detector (S) includes: a smoke detection part (22) connected to a sampling pipe (11); a fan (12) that sucks sampling air (SA) into the sampling pipe; and an air velocity sensor (15) that measures an air velocity of the sampling air within the sampling pipe. The air velocity sensor (15) is disposed at a primary side of the fan (12), and a straightening vane (25) is disposed between the air velocity sensor (15) and a suction port (12a) of the fan (12).

A flow path member includes an orifice section, a pressure regulating section, a filter section, and a distribution section joined together integrally, and these components are detachably provided between insulating seals. In the orifice section, orifice holes are formed around a fuel gas supply passage. In the pressure regulating section, a substantially ring shaped pressure regulating chamber is formed. In the filter section, a plurality of filter holes are formed. The orifice holes and the filter holes are connected through the pressure regulating chamber. In the distribution section, a plurality of distribution grooves for distributing the fuel gas flowing through the fuel gas supply passage in a stacking direction to flow along a separator surface, and a circular groove for supplying the fuel gas to the filter section are formed.

To enable an air velocity of sampling air to be precisely measured, a smoke detector (S) includes: a smoke detection part (22) connected to a sampling pipe (11); a fan (12) that sucks sampling air (SA) into the sampling pipe; and an air velocity sensor (15) that measures an air velocity of the sampling air within the sampling pipe. The air velocity sensor (15) is disposed at a primary side of the fan (12), and a straightening vane (25) is disposed between the air velocity sensor (15) and a suction port (12a) of the fan (12).

A honeycomb structure, including: a pillar-shaped honeycomb structure body having a first end face and a second end face and including a porous partition wall disposed so as to surround a plurality of cells, the plurality of cells extending from the first end face to the second end face and serving as a through channel of fluid, whereinthe partition wall has a porosity of 45 to 65%,the partition wall has an average pore diameter of 15 to 25 μm, andthe partition wall has a cumulative pore volume, which is measured by mercury intrusion porosimetry, such that a pore volume ratio of pores having pore diameters of 10 μm or less relative to the overall pore volume of the partition wall is 10% or less, and a pore volume ratio of pores having pore diameters of 40 μm or more is 10% or less.

Provided are a distributor capable of feeding a liquid in a state of evenly flowing out from an entire opening while avoiding the opening from being blocked by sludge and keeping a pressure loss small, a settling tank that employs the distributor, and a method for operating the settling tank. A distributor 10 being in the form of a rectangular frame and having straight tubular sides 11 to 14 is disposed in a lower space within a settling tank 1. A liquid outlet opening 16 extending in a lengthwise direction of the distributor 10 is formed in a bottom surface of the distributor 10. An open angle θ of the opening 16 with respect to a tube axis is 60 to 180°, and preferably 90 to 150°.

Defective assembling of a duct to a battery module is reduced. A distribution duct has a plurality of distribution paths supplying refrigerant to each of a plurality of ventilation paths. A distribution path and a ventilation path are connected by an insertion structure in which the distribution path is inserted into the ventilation path. A distribution path has an open outlet end surrounded by a coupling portion, and is connected to a ventilation path via a planar sealing structure in which a sealing material is held on the coupling portion in a compressed state.

A flow path member includes an orifice section, a pressure regulating section, a filter section, and a distribution section joined together integrally, and these components are detachably provided between insulating seals. In the orifice section, orifice holes are formed around a fuel gas supply passage. In the pressure regulating section, a substantially ring shaped pressure regulating chamber is formed. In the filter section, a plurality of filter holes are formed. The orifice holes and the filter holes are connected through the pressure regulating chamber. In the distribution section, a plurality of distribution grooves for distributing the fuel gas flowing through the fuel gas supply passage in a stacking direction to flow along a separator surface, and a circular groove for supplying the fuel gas to the filter section are formed.

A multi-cylinder hermetic compressor which comprises a first muffler chamber, a second muffler chamber, and a plurality of coolant channels which connect the first muffler chamber and the second muffler chamber. A check valve having a reed valve structure and comprising a fixed end at one end is provided at the first muffler chamber side in a first discharge port. The first discharge port is disposed so as to be shifted, relative to the fixed end, in one direction of rotation in the circumferential direction centred on a crank shaft. A coolant channel, from among the plurality of coolant channels, that is disposed in the position furthest from the first discharge port in the abovementioned direction of rotation has a smaller cross-sectional area than at least one of the other coolant channels.

The invention relates to a dual-cycle reverse osmosis device and a reverse osmosis treatment method. The dual-cycle reverse osmosis device comprises a single-cycle water saving loop communicated with pipelines of an aftertreatment device and a supercharging device by a water inlet electromagnetic valve between a water inlet pipe and a thick water discharge outlet, wherein a loop is additionally arranged on the single-cycle water saving loop to form a dual-cycle water saving loop. The dual-cycle water saving loop consists of a first tee pipe, a second tee pipe, a third tee pipe, a fourth tee pipe, one-way valves, a one-way throttle valve and a pulse electromagnetic valve, wherein the first tee pipe and the second tee pipe are arranged between the water inlet electromagnetic valve and the supercharging device; the third tee pipe and the fourth tee pipe are arranged between a thick water opening of the aftertreatment device and the thick water discharge outlet and communicated with each other through a pipeline; the one-way valves limit water to only flow to a water inlet opening of the supercharging device and are respectively arranged between the first tee pipe and the fourth tee pipe as well as between the second tee pipe and the third tee pipe; the pulse electromagnetic valve is arranged between the third tee pipe and the fourth tee pipe; a throttling device is arranged between a water outlet of the pulse electromagnetic valve and the thick water discharge outlet.

A multi-cylinder hermetic compressor which comprises a first muffler chamber, a second muffler chamber, and a plurality of coolant channels which connect the first muffler chamber and the second muffler chamber. A check valve having a reed valve structure and comprising a fixed end at one end is provided at the first muffler chamber side in a first discharge port. The first discharge port is disposed so as to be shifted, relative to the fixed end, in one direction of rotation in the circumferential direction centred on a crank shaft. A coolant channel, from among the plurality of coolant channels, that is disposed in the position furthest from the first discharge port in the abovementioned direction of rotation has a smaller cross-sectional area than at least one of the other coolant channels.