34results about How to "Large amount of liquid" patented technology

In an ejector cycle having an ejector for decompressing refrigerant, a check valve is disposed in an oil return passage through which refrigerant including a lubrication oil is introduced from a refrigerant outlet side of an evaporator to a refrigerant suction side of a compressor while bypassing the ejector. When the lubrication oil amount staying in the evaporator reduces, the check valve is automatically closed, and a normal operation mode of the ejector cycle is automatically set. On the contrary, when a large amount of lubrication oil stays in the evaporator, the check valve is automatically opened, and an oil return mode is automatically set. Therefore, the lubrication oil staying in the evaporator can be controlled equal to or lower than a predetermined amount, thereby effectively returning the lubrication oil to the compressor.

The invention relates to an auxiliary article in medical treatment, an antipyretic paste, which is mainly prepared from the following raw material of (wt%), peppermint 0.1-15, ethanol 1-30, glycerol 1-30, borneol 0.1-15, and spreadable gel base or ointment base in balancing amount. The antipyretic paste made from the above formula can be applied on the skin surface of a pyretic patient to conduct auxiliary antipyretic treatment under physical and medical dual antipyretic effect. The inventive antipyretic paste has physical and medical dual antipyretic effect, resulting in better and safer antipyretic effect, and has no toxic and adverse effects.

The auxiliary braking device with magnetic rheological body for petroleum rig includes one cylinder of non-magnetic conductive material and two end caps of magnetic conductive material to form one sealed cylindrical cavity, two magnetic conductive columns with wound exciting coil outside the cylinder and between the two end caps, one shaft of non-magnetic conductive material with fixed magnetic conductive blades set between the two end caps, and magnetic rheological body filled in the sealed cylindrical cavity. The present invention can provide great braking moment at all rig winch speeds, and has stepless regulation of braking moment, fast response, low cost and long service life.

The pin gear-cycloid gear hydraulic pump has driving shaft, pump core and valve inside the pump body. The pump core is rotated with the driving shaft, and has drawing cavity connected to conveying pipeline via valve. The pump core is one pin gear-cycloid gear mechanism comprising inner rotor, pin gear, and inner cycloid gear; the inner rotor is set eccentrically relative to the inner cycloid gear and meshed with the pin gear and the inner cycloid gear successively. The inner rotor and the inner cycloid gear and two adjacent pin gears constitute one drawing cavity. The pin gear is eccentric and has fixed rotating shaft and rotating axis distributed on one cylindrical surface with the rotating shaft of the inner cycloid gear as the axis. The hydraulic pump of the present invention has the advantages of several drawing cavities, no fluctuation in flow rate, less liquid pressure impact, less noise, less energy loss, less wear, long service life, etc.

The invention provides a double-acting impeller pump, and belongs to the technical field of mechanical engineering. The problems of high noise and large pump body vibration of the traditional double-acting impeller pump are solved. The double-acting impeller pump comprises a front shell, a back cover, a stator, an oil outlet distribution disc, an oil inlet distribution disc and a rotating shaft, wherein a rotor which is installed on the rotating shaft is arranged in the stator; the cavity between the front shell and one side of the oil outlet distribution disc is formed into an oil inlet chamber, and the cavity between the back cover and the other side of the oil outlet oil distribution disc is formed into an oil outlet chamber; a plurality of guide grooves and blades formed in the guide grooves in a sliding mode are formed in the stator, every guide groove comprises a guide surface and a groove bottom which are mutually parallel, oil supply holes which are communicated with the groove bottoms are all formed in the oil inlet oil distribution disc and the oil outlet oil distribution disc, a pressure groove which intersects the guide grooves is arranged on the rotor, a plurality of through holes are formed in the oil outlet oil distribution disc, the through holes penetrate the oil outlet chamber, and the pressure groove and the through holes are placed on the same shaft diameter. The double-acting impeller pump has the advantages of small noise and low rotating speed.

The invention provides a microfluidic liquid automatic photochromic spectacles charging device based on piezoelectric driving. The device comprises a microprocessor which is connected with a power supply module, wherein the power supply module is connected with a piezoelectric element which is connected with a pump membrane, the pump membrane is arranged on a pump cavity, one end of the pump cavity is communicated with an inlet, the inlet is communicated with a liquid storage cavity, an inlet microvalve is arranged between the inlet and the pump cavity and connected with the power supply module, the other end of the pump cavity is communicated with an outlet, the outlet is communicated with a fluid flow pulse reducing element which is communicated with a photochromic spectacle lens, and anoutlet microvalve is arranged between the outlet and the pump cavity and connected with the power supply module. The device is simple in structure, small in size, comfortable to wear and long in service life, can realize circulation of a colored liquid between the photochromic spectacle lens and the liquid storage cavity, and completes the automatic, fast and uniform color changing function.

The invention discloses a single-tube jet pump liquor drainage technology method for a normal-pressure shale gas well. In the method, firstly, a packer assembly and a jet pump cylinder are lowered into the well through an oil tube; then a jet pump core is put into the oil tube and pushed into the jet pump cylinder through well flushing, direct-cycle well flushing production is performed, and a single-tube jet pump liquor drainage device is formed. With the oil tube being a power liquor injecting tube, an annulus is formed between the oil tube and a production casing to be used as a mixed liquor discharging tube; in this way, rapid liquor drainage is realized for the normal-pressure shale gas well.

N-Acetyl-D-glucosamine can be produced by cultivating a fungus capable of producing N-acetyl-D-glucosamine, such as Trichoderma hamatum AB10282 strain (FERM BP-10623) or Trichoderma harzianum AB10283 strain (FERM BP-10624), in a culture medium supplemented with a carbon source other than chitin and chitin oligosaccharide and a nitrogen source to produce and accumulate N-acetyl-D-glucosamine in the culture medium and then collecting N-acetyl-D-glucosamine from the culture medium.

The invention discloses a building coating and a preparation method thereof. The building coating comprises the following components in parts by weight: 100 parts of polyvinyl butyral (PVB) resin, 30-50 parts of ammonium polyphosphate, 20-35 parts of titanium dioxide, 15-40 parts of amino resin, 15-30 parts of nano calcium carbonate, 25-40 parts of etherified melamine resin, 6-20 parts of hydroxyethyl cellulose, 15-30 parts of pentaerythritol, 4-20 parts of chlorinated paraffin, 6-20 parts of ethylene glycol monobutyl ether and 5-10 parts of sodium tripolyphosphate; and the building coating further comprises 20-30 parts of a styrene-acrylate copolymer emulsion, 4-10 parts of aluminum silicate fibers and 10-15 parts of a defoaming agent. The coating is applied to wall surfaces of building pipelines. The beneficial effects are as the follows that the PVB resin is adopted in the components, so that compared with an existing coating applied to building pipelines, the coating has improved adhesion capability on a pipeline, and the problem that the coating falls off and is stripped from the pipeline is reduced. The foaming rate of the coating provided by the invention is reduced, and thefire resistance time is prolonged.

The invention relates to a multi-plunger cooperative gas-lift liquid drainage technology. The technology is applied to a multi-plunger cooperative gas-lift liquid drainage system, the liquid drainagesystem operates circularly in a reciprocating mode, a plurality of plungers divide a large-section liquid column and a gas column in an oil pipe into multiple sections of liquid columns, the plungersand the gas columns are connected in series, and the plungers are connected in the oil pipe vertically and mutually to achieve liquid load cooperative work. Liquid is drained from a shaft step by step, pressure formed by a small section of liquid column disappears when each small section of liquid column is drained, the pressure of each stage of gas column below the small section of liquid columnis reduced, the volume is expanded, the gas columns are expanded step by step, and meanwhile, gas expansion can be fully utilized to accelerate the plungers and the liquid columns above the plungers to ascend, the needed gas-liquid ratio is reduced, and liquid drainage mount is increased. Under the condition of the same gas amount, more liquid can be drained, or under the condition of the same liquid drainage amount, the gas amount required by the liquid drainage system is greatly reduced.

The invention discloses an emulsion polymerization reaction kettle. The reaction kettle comprises a vertical cylinder, an upper sealing head of the cylinder is provided with a material inlet, a gas inlet and a gas outlet, the gas outlet is connected with the vacuum system, and a lower sealing head of the cylinder is provided with a material outlet; a stirring shaft insertion opening is formed in an upper sealing head of the barrel, one end of the stirring shaft is connected with the power device, the other end of the stirring shaft is connected with the four-blade ring type stirrer, and the stirring shaft is connected with the barrel through a mechanical seal. Blades on the lower portion of the four-blade ring type stirrer are large in size, the liquid discharging capacity of the blades can be improved, the axial flow effect in the reaction kettle can be enhanced, blades on the upper portion of the four-blade ring type stirrer are arranged to be in a sawtooth shape, the shearing capacity of the blades to fluid can be improved, in addition, the height of the blades of the four-blade ring type stirrer is larger than that of the reaction kettle, and therefore the stirring efficiency is improved. And various load working conditions can be adapted. The method is used for producing polybutadiene latex, the axial temperature difference is small, the particle size is reduced to 180-500 nm, the consumption of an emulsifier in an oil phase is increased, and the consumption of a refrigerant is reduced.

The invention discloses a novel airproof oil well pump which is mainly composed of a pump barrel assembly and a plunger piston assembly (7) which is arranged inside the pump barrel assembly. The pump barrel assembly is composed of at least two pump barrels (2) and two adjacent pump barrels (2) are communicated with each other in a sealing mode. The novel airproof oil well pump changes the fact that the traditional oil well pump can only perform the functions of absorbing liquid and discharging liquid when a stroke begins and ends, discharging some gas in the process of stroke is achieved, influence of the gas is greatly reduced, and the amount of discharging liquid is increased. Due to the fact that reinforcement outer tubes are arranged between air exchange cavities, when the oil well pump works normally, influence of axial alternating load on dangerous sections of pump barrels of the oil well pump is enabled to be greatly reduced, service life of the oil well pump is prolonged, and processing difficulty is lowered. The novel airproof oil well pump has the advantages of being low in cost, long in service life, convenient to use and maintain and suitable for popularization and quantity production.

The invention discloses a sucker-rod lifting whole-process liquid discharging oil well pump. The sucker-rod lifting whole-process liquid discharging oil well pump comprises a small pump cylinder, a large pump cylinder, an upper outer pipe, a two-way joint, an upper plunger and a descending assisting plunger, wherein the small pump cylinder, the large pump cylinder, the upper outer pipe and the two-way joint are sequentially connected from top to bottom; the upper plunger and the descending assisting plunger are sequentially connected from top to bottom; the upper plunger comprises an upper small-diameter section and a lower large-diameter section, wherein the upper small-diameter section runs inside the small pump cylinder; the lower large-diameter section runs inside the large pump cylinder; the upper outer pipe is provided with an axial center through hole and an eccentric through chamber; the descending assisting plunger runs inside the center through hole of the upper outer pipe; the two-way joint is provided with an axial flow channel and a radial flow channel which do not communicate with each other; the lower end of the center through hole of the upper outer pipe is connected with the radial flow channel; and the lower end of the eccentric through chamber of the upper outer pipe is connected with the axial flow channel. The sucker-rod lifting whole-process liquid discharging oil well pump disclosed by the invention can realize liquid discharging in a whole lifting process of a sucker-rod pump, saves energy and improves the oil output efficiency.