114results about How to "Increase pumping rate" patented technology

A method of dynamically controlling open hole pressure within a wellbore having a drill string positioned therein. The method comprising the steps of pumping a fluid down the drill string, into an annulus formed by the drill string and the interior of the wellbore, and then subsequently up the annulus to the surface of the ground; selectively applying wellhead pressure to the annulus through selectively pumping an additional quantity of the fluid or a quantity of a secondary fluid across the annulus; and, controlling the application of wellhead pressure applied to the annulus by controlling one, or both, of (a) the operation of a wellhead pressure control choke, and (b) the flow rate of the additional quantity of fluid or the secondary fluid pumped across the annulus, to thereby maintain open hole pressure within a desired range.

An optical signal power monitoring and control system is described. The system comprises at least one lasing SOA that receives, amplifies, and outputs the optical signal. During the signal amplification, a ballast laser signal is output through a substrate of the lasing SOA. This ballast laser signal is indicative of the output power of the lasing SOA. At least one detector converts the ballast laser signal to an electrical signal and transmits this electrical signal to a power monitor circuit. Using the electrical signal, the power monitor determines the output power of the lasing SOA. A pump control adjusts the rate at which the lasing SOA is pumped in order to change the saturation level of the lasing SOA and its corresponding power output ceiling. According to one embodiment, the power monitor identifies when the lasing SOA is approaching saturation or is saturated. If the lasing SOA is saturated or approaching saturation, the pump control increases its pumping rate causing the saturation level of the lasing SOA to rise. As a result, the lasing SOA is provided protection from saturation.

A pressure response fracture port tool and method for its use reliably provides a noticeable indication at surface to an operator as to when the flow port is opened. The tool includes an outer housing and a sliding sleeve which resides within the outer housing. The outer housing has a first and second set of flow ports. The inner mandrel moves between a first position and a third position to expose the flow ports to the wellbore. The first set of flow ports, with its smaller area relative to the second set of flow ports, creates a noticeable pressure increase or spike that can be observed at surface when exposed to the wellbore. The second set of flow ports creates a noticeable pressure drop when it is exposed to the wellbore.

A spray gun for spraying paints and similar viscous media that can be propelled pneumatically, comprising a gun housing for accommodating components of the spray gun that effect propulsion, mixture and/or metering, a handle projecting from the gun housing, and a reservoir tank removably attached to the gun housing for holding the medium to be processed, with the housing of the spray gun provided with an air guidance duct through which the compressed air responsible for atomization flows to an atomizer nozzle, wherein surfaces of the air guidance duct and/or atomizer nozzle, and/or an air cap, which come into contact with the stream of compressed air, or are wetted, are provided wholly or in part with a structured surface in the form of indentations and/or protrusions worked into the surfaces.

The invention relates to a dehydrogenation process for aluminum or aluminum alloy flux through utilizing solid proton conductor and a device. The device comprises an aluminum-smelting channel, a heating-furnace, temperature-controlling thermocouple and a hydrogen-testing sensor. The key points lie in that a hydrogen extraction device is formed by the mutual connection of a proton conductor pipe, an alumina pipe and a metal pipe, by a contact conductor which is assembled in the hydrogen extraction device and an another contact conductor with alumina pipe protective sleeve connecting with an external power switch. The proton conductor chooses chemical formula of BaCe 1-XYXO3-a or BaCe1-XSmxO3-a, wherein X is equal to 0.05-0.25 or is made from CaZr 0.9 In 0.1O3-a material. The dehydrogenation process adopts short-circuit dehydrogenation under the stirring condition of aluminum or aluminum alloy flux temperature is 750-800 DEG C, or adopts the combination carrying or vacuum extraction hydrogenation after short-circuit hydrogenation or adopts applied voltage to hydrogenate. The hydrogenation effects of the invention are that the content of hydrogen is smaller 0.15ml/100gAl, and the content of hydrogen is smaller 0.12ml/100Al for high strength aluminum alloy flux. The invention has the advantages of simple technology and device, convenient operation, environment-friendly and less investment, which is easy to realize industrialization.

The invention relates to a double-head claw pump rotor and its molded line. The molded line comprises an equidistance curve of a point meshing epicycloid, a modified arc segment, a tooth top arc segment, an intermediate connecting arc segment, an arc conjugate curve segment, and a tooth root arc segment. Two rotors adopt a central symmetrical structure. By setting the modified arc segment, the sharp points are eliminated, and severe wearing phenomenon of the rotors during operation can be avoided. The equidistance curve of the point meshing epicycloid and the modified arc segment are always spaced apart to avoid the formation of suction and exhaust closed volume, and a design parameter space of the rotor molded line is increased, the power consumption is reduced, and the pump efficiency isimproved. The molded line is designed in the double-head claw pump, compared with the other conventional pumps, the pump in the invention has the advantages of less wearing parts, compact structure,high pumping rate, no surge, and low vibration noise.

The invention discloses a pulse on-off valve type metal 3D printing device capable of realizing precise spray-deposition 3D printing formation of molten metal under the control of a pulse on-off valve. More specifically, the pulse on-off valve type metal 3D printing device is characterized in that a metal liquid is purified through melting and filtering, the precise controllable continuous spray of the molten metal is realized through controlling the pulse on-off of a rotating blade-shaped valve at a printing spray head, the movement of the spray head is controlled through a three-dimensional coordinate platform, a forming platform is provided with stable temperature by a printing substrate, and low-cost additive manufacturing equipment capable of realizing rapid metal melting, multistage purification and precise controllable spray deposition is finally designed.

The invention provides a cooking utensil. The cooking utensil comprises a cover, an inner pot and an air inlet pipe, wherein the inner pot is positioned below the cover, and is used for bearing waterand materials; and the delivery end of the air inlet pipe communicates with the inner pot, and is used for conveying air flow to the inner pot, so that the materials and water generate relative movement under the effect of the air flow, and then the materials are washed. For the cooking utensil provided by the invention, the materials including rice and water are placed in the inner pot, high-pressure air flow is conveyed into the inner pot through the air inlet pipe, then the materials and water generate the movements including rolling, friction, rotation and the like under the effect of theair flow, namely, the purpose of automatic washing is realized by utilizing pneumatic stirring, thus the stirring device and relevant structures driving the stirring device to contract and stretch inthe prior art are saved, and therefore, the structure of the cooking utensil is greatly simplified.

The invention discloses a wet-type rotary vane electric vacuum pump for an automobile, which comprises a pump body assembly, wherein the pump body assembly comprises a rear end cover and a supporting seat which are fixedly connected; the supporting seat is fixedly connected with a cylinder body through a cover plate and a bottom plate; the inside of the cylinder body is eccentrically provided with a rotor; one end of a rotating shaft of the rotor is connected with the cover plate and the other end of the rotating shaft of the rotor runs through the bottom plate and the supporting seat sequentially for through connection; the supporting seat is provided with a pumping hole E; the top of the cylinder body is provided with an exhaust port F; the rotor is adjustably connected with two vanes; a spring device is arranged in the rotor, so that end parts of the vanes are always pressed against the inner wall of the cylinder body; an air cavity A, an air cavity B and an air cavity C are formed among the vanes, the rotor and the cylinder body; and the air cavity A corresponds to the pumping hole E, and the air cavity C corresponds to the exhaust port F. The wet-type rotary vane electric vacuum pump effectively meets the vacuum demands during the repeated braking of vehicles under the condition of idle speed, and the response speed is quick; and simultaneously, the vacuum pump is provided with a vacuum pump oil-way circulation, and vacuum pump oil is attached to the cylinder body, the rotor and vane surfaces uniformly with the vanes, so that operating noises are reduced effectively, and the operating reliability is improved.

The invention relates to a vacuum glass air-exhaust port. The air-exhaust port is characterized in that the upper glass of the vacuum glass is perforated, such that the air-exhaust port is formed. A sealing ring is prepared on the lower surface of the upper glass at the periphery of the air-exhaust port. A sealing box is placed at a place on the upper surface of the lower glass and corresponding to the air-exhaust port. The sealing ring can be inserted into the sealing box. After edge-sealing of the upper and lower glass, a metal solder is placed into the air-exhaust port. The air-exhaust port is vacuumed and heated such that the metal solder is molten into liquid, and the liquid is retained in the sealing box. The sealing ring is also immersed in the liquid. The air-exhaust port is automatically sealed according to a liquid sealing principle. After cooling, the liquid is solidified, such that air-tight sealing upon the air-exhaust port is realized. The method provided by the invention can be used in mass productions. With the method, vacuum glass production efficiency and qualification rate can be greatly improved, and production cost can be reduced.

The invention relates to a general profile of a multi-lobe Roots pump, in particular to a rotor profile of a multi-lobe Roots pump suitable for a Roots blower and a Roots vacuum pump. 2. n is a positive integer. The rotor body is composed of a valley shape and a peak shape connected in sequence. The profile line from the lowest point of any valley shape to the highest point of its adjacent peak shape is sequentially composed of the root arc AB section, the cycloid BC section and The conjugate curve CD segment of the root arc is composed. The radius ratio Rm/R of the top circle radius Rm to the pitch circle radius R of the general profile of the multi-lobe Roots pump of the present invention exceeds the extreme value, the area utilization coefficient of the rotor is high, and the air volume and air extraction rate are large.

A clean-out tool and method of cleaning out a wellbore. The clean-out tool is placed at the end of a coiled tubing or other conveyance string. The clean-out tool comprises a tubular housing providing an elongated bore through which fluid flows. The tubular housing has back-jetting ports disposed at an upward angle therein. The clean-out tool is configured to operate in a back-jetting mode when the clean-out fluid is pumped into the tubular housing at a first flow rate. In this mode, a portion of clean-out fluid flows through the bore, up an annular region and then through the back jetting ports. The clean-out tool is further configured to operate in a fluid flow-through mode when the clean-out fluids are pumped into the bore of the tubular housing at a second flow rate. In this mode, all of the clean-out fluid flows through the clean-out tool.

The invention discloses a disc type molecular pump, which comprises a motive disc, a static disc and a pump body. The disc type molecular pump is characterized in that a radial rectangular or a ladder-shaped air flue is arranged on the motive disc and the static disc with certain thicknesses, so as to allow gas molecules on the discs to communicate; and slant angles between the two radial sides of the air flue and the horizontal planes of the discs can be changed from 0 to 180 degrees respectively. In the two radial sides of the air flue on the motive disc and the static disc, as one side mainly for delivering gas molecules, the inclination direction of the two is opposite, while the other side is subject to associating with the delivery of the gas molecules. An air exhaust unit comprising multi-stage motive discs and static discs drives the gas molecules to move in the fixed direction, so as to drag, deliver and compress the gas molecules, thereby performing air exhaust. The disc type molecular pump has the characteristics of simple structure, convenience in manufacturing and processing, large mechanical strength and high resistance against large flow gas impact, and can be widely applied to the medium and high vacuum fields.

The invention discloses a high-integration flywheel energy storage device with a novel horizontal self-vacuum chamber. A vacuum chamber is formed through a casing, an upper end of the vacuum chamber is a three-degree-of-freedom magnetic bearing fixedly connected with the casing by a bracket, which includes a radial magnetic bearing, an axial magnetic bearing and a permanent magnet, a lower end ofthe three-degree-of-freedom magnetic bearing is a flywheel rotor, a single-winding outer rotor bearingless motor is located at a lower end of the flywheel rotor, a rotor of the motor is mounted in anannular groove at a lower surface of the flywheel rotor, and a stator is fixed to a lower end of the casing by a bracket. The device is advantaged in that five-degree-of-freedom balance of the flywheel rotor is realized by the three-degree-of-freedom magnetic bearing combined with the single-winding outer rotor bearingless motor, a control mode is simplified, the integration degree is improved, ahorizontal composite vacuum pump is arranged at an upper end of the casing, a vacuum pump is a double-rotor structure which is mirror-symmetrical to the left and right, and the vacuum degree and the pumping speed are improved.

A clean-out tool and method of cleaning out a wellbore. The clean-out tool is placed at the end of a coiled tubing or other conveyance string. The clean-out tool comprises a tubular housing providing an elongated bore through which fluid flows. The tubular housing has back-jetting ports disposed at an upward angle therein. The clean-out tool is configured to operate in a back-jetting mode when the clean-out fluid is pumped into the tubular housing at a first flow rate. In this mode, at least a portion of clean-out fluid flows through the bore, up an annular region and then through the back jetting ports. The clean-out tool is further configured to operate in a fluid flow-through mode when the clean-out fluids are pumped into the bore of the tubular housing at a second flow rate. In this mode, all of the clean-out fluid flows through the clean-out tool.

The invention relates to a device (10) that is designed and configured to scald slaughtered poultry G, comprising an elongated scalding tank (11), which is open at the top, for receiving and holding a scalding medium, said tank having at least one transport stretch (12.1, 12.2....12.n) for the poultry G, wherein each transport stretch (12.1, 12.2....12.n), in its longitudinal extension, adjoins a separating element (13) that extends at least over a section of the length of the transport stretch (12.1, 12.2....12.n), a transport means (14) arranged above the scalding tank (11) for transporting the poultry G, which are suspended by their feet, along the transport stretch (12.1, 12.2....12.n) in a transport direction T, a control and regulating unit (15) for controlling the temperature of the scalding medium, means (16) for generating a swirl and/or flow of the scalding medium, and a filter apparatus (35) for cleaning the scalding medium. The invention is characterised in that each separating element (13) comprises two separating walls (18, 19) arranged at a distance from one another and extending upward from the bottom wall (17) of the scalding tank (11), said walls for forming a channel (20) that is open at the top and at the end faces, and a swirl element (23) as the means (16) for generating the swirl and/or flow of the scalding medium is arranged inside the channel (20) in the region of through-holes (21, 22) in each separating wall (18, 19) that faces a transport stretch (12.1, 12.2....12.n), which swirl element can be rotationally driven by means of a drive shaft (24) that is directed horizontally and runs transversely to the transport direction T of the poultry G. The invention also relates to a corresponding method.

The invention discloses a multi-cylinder oilless compressor of a refrigerating agent recovery machine, comprising a box body, a cylinder, a crankshaft arranged inside the box body, and a motor provided with an output main shaft connected with the crankshaft, wherein the crankshaft is provided with an eccentric shaft part which is taken as a common driving shaft of a plurality of connecting rods; the eccentric shaft part is movably connected with the plurality of connecting rods which are sequentially arranged along the axial direction of the eccentric shaft part; the box body is provided with cylinders which have the number being same as that of the connecting rods; the cylinders are evenly distributed along the circumference correspondingly to the center of the crankshaft; each cylinder is internally provided with an air inlet valve, an exhaust valve and a piston; and the pistons are connected with the corresponding connecting rods in the cylinders where the pistons are arranged. The multi-cylinder oilless compressor overcomes the limitation that the existing compressor only has a single cylinder or double cylinders, expands the structure of three cylinders, four cylinders, six cylinders or eight cylinders on the basis of the double cylinders, and has the characteristics of small volume, light weight, simple and compact structure, rapid refrigerating agent recovery and thorough recovery.

The invention relates to an extracorporeal blood treatment apparatus with

• • a control device (50) for controlling the opening and closing of an arterial line (2) with simultaneous closing and opening of a venous line (3) in a single-lumen-arrangement (10), with which untreated blood is removed through the single-lumen-arrangement (10) and the arterial line (2), led through a blood treatment device (5) and treated blood is fed back through the venous line (3) and the single-lumen-arrangement (10),
  • an arterial line container (20) which is arranged in the arterial line (2) in front of the blood treatment device (5),
  • a venous line container (30) which is arranged in the venous line (3) following the blood treatment device (5),
  • a sensor device (31) for detecting an amount of treated blood being above a limit value in the venous line container (30),
  • a sensor device (21) for detecting an amount of untreated blood being below a limit value in the arterial line container (20),
  • an arterial line closure device (22) for closing the arterial line (2) with simultaneous opening of the venous line (3) in response to a signal A which is transmitted by the sensor device (31) to the arterial line closure device (22),
  • a venous line closure device (32) for closing the venous line (3) with simultaneous opening of the arterial line (2) in response to a signal B which is transmitted by the sensor device (21) to a venous line closure device (32) and
  • at least one pump (40) and is characterized in that a control device (50) is provided, with which a phase volume V_act is adjustable automatically in dependence on the current pumping rate Q_BP of the at least one pump (40) during a phase to a predefined value V_nom (FIG. 1).

The invention discloses a diffusion pump, and particularly relates to a large-caliber high vacuum oil diffusion pump, which is suitable for a vacuum furnace and a vacuum coating machine. The large-caliber high vacuum oil diffusion pump comprises a pump body, and a pump core component arranged in the pump body, wherein a heater is arranged at the bottom of the pump body; an oil stop device is arranged in an exhaust port of the pump body; the pump body adopts a convex cavity structure; the pump core component is vertically mounted in a center oil tank in the pump body, and is formed into an integral structure by a first-stage guide pipe, a second-stage guide pipe and a third-stage guide pipe arranged in sequence from inside to outside; umbrella cap-shaped diffusion nozzles are respectively arranged at the upper parts of all the guide pipes; a spraying nozzle is vertically welded at the bottom of the third-stage guide pipe; the first-stage guide pipe is higher than the second-stage guide pipe; and the second-stage guide pipe is higher than the third-stage guide pipe. The large-caliber high vacuum oil diffusion pump has the characteristics of large caliber, high limit vacuum degree, high pumping rate, low oil return rate and low electricity consumption.