54 results about "Dual unit" patented technology

A refracture-candidate diagnostic test is an injection of compressible or slightly compressible fluid such as liquid, gas, or combination at pressures in excess of minimum in-situ stress and formation fracture pressure with pressure decline following injection test recorded to detect a fracture retaining residual width from previous stimulation treatments. The diagnostic consists of small volume injections with injection time being a small fraction of time required for compressible or slightly compressible reservoir fluid to exhibit pseudoradial flow. The fracture-injection portion of a test can be considered as occurring instantaneously, and the results obtained in an open infinite-conductivity hydraulic fracture with pressures above fracture closure stress during before-closure portion of pressure falloff and with pressures less than fracture closure stress during after-closure portion of pressure falloff. Data measurements are transformed into a constant rate equivalent pressure transformation to obtain adjusted pressures or adjusted pseudovariables which are analyzed to identify dual unit-slope before and after closure periods confirming a residual retaining width.

A dual-unit paving system for covering a surface is provided. The system comprises pairs of first and second units. For each pair, the first and second unit have different respective shapes and sizes, and are configured to be matingly engageable for forming a hexagonal assembly having six, non-linear sides. The hexagonal assembly allows forming rotational tessellations. The first and second units are also shaped and configured to be matingly engageable so as to form horizontally aligned tessellations, and also vertically aligned tessellations.

An embodiment of the invention provides a terminal, a system and a method for dual-unit cooperative work. The system comprises a first terminal and a second terminal, wherein the second terminal comprises a display screen, a second interface and a processor; the first terminal displays a display screen, a first interface, a combining module and a processor; a first interface of the first terminal is connected with the second interface of the second terminal; the combining module of the first terminal is used for logically combining the display screens of the first terminal and the second terminal; and the processor of the first terminal is used for controlling the display screen of the first terminal to display corresponding contents and controlling the first interface to transmit contents which need to be displayed by the display screen of the second terminal to the second interface, so that the second interface transmits the contents which need to be displayed by the display screen of the second terminal to the display screen of the second terminal through the processor of the second terminal to display the contents. According to the terminal, the system and the method for dual-unit cooperative work, the range of the display screen of the single terminal is enlarged, and experience of users on the terminal is enhanced.

The invention belongs to the technical field of stability and control of power systems and particularly relates to a VSC (Voltage Source Converter)-HVDC (High Voltage Direct Current Transmission) system class synchronization machine controller design method in consideration of transient stability. The method comprises steps: a dual-unit equivalent model for the VSC-HVDC system is built, wherein the dual-unit equivalent model comprises an inverter end and a rectifier end; and a class synchronization machine controller is designed. The idea of a synchronous inverter is applied to HVDC containing the VSC, and the dual-unit equivalent model for the VSC-HVDC system is built; on the basis of the dual-unit equivalent model, the class synchronization machine controller with droop characteristics is designed, and the traditional outer-loop voltage inner-loop current controller is replaced to improve the transient stability of the system; and the class synchronization machine controller with the droop characteristics can be well applied to the VSC-HVDC system, adding of the class synchronization machine controller can effectively increase the system damping, the oscillation is suppressed, and the transient stability of an AC/DC system after disturbance can be improved.

The invention relates to a natural gas distribution type energy supply system of a hospital. The system comprises an internal combustion engine, a smoke and hot water type lithium bromide refrigerating and heating dual unit, a smoke and hot water heat exchanger, a hot water storage tank and a three-way regulating valve. The internal combustion engine is connected with a natural gas pipeline, a jacket water pipeline, a smoke pipeline and an intercooling water pipeline. The jacket water pipeline is further connected with the smoke and hot water type lithium bromide refrigerating and heating dual unit. The smoke pipeline is further connected with the smoke and hot water type lithium bromide refrigerating and heating dual unit and the smoke and hot water heat exchanger through the three-way regulating valve. The smoke and hot water heat exchanger is connected with the hot water storage tank. The intercooling water pipeline is further connected with the hot water storage tank. According to the natural gas distribution type energy supply system, different quantity demands of the hospital for sanitary hot water at different times are met through the hot water storage tank, and the problem that system operation is unstable due to great hot water load fluctuation is solved.

Methods are provided for making slider-operated fasteners for use in reclosable plastic bags using at least a double index and dual unit operations. The methods involve forming two preseals, forming two notches within the preseals, applying two sliders into the previously formed notches, and applying two end stops proximate the previously applied sliders by having the various stations perform their respective functions, either simultaneously or at generally the same time, on different parts of the fastener spaced approximately at a double index. Also provided are methods of producing finished bags by applying the slider-operated fastener to a flat web of plastic film and conveying the web to a vertical or a horizontal form-fill-seal machine.

The present invention relates to a sulfur dioxide infrared detection device and method, and the sulfur dioxide infrared detection device comprises an infrared light source, a dual-unit pyroelectric infrared detector, a first narrowband light filter, a second narrowband light filter, a gas chamber, a humidity sensor and a main control circuit board. Infrared light emitted by the infrared light source mounted on one end of the gas chamber is absorbed by sulfur dioxide gas so as to cause reduction of an output signal of the pyroelectric infrared detector mounted on the other end of the gas chamber. Compared with the prior art, the sulfur dioxide infrared detection device and method can significantly reduce the impact of water vapor on sulfur dioxide infrared detection devices to improve system sensitivity, significantly reduce the cost of sulfur dioxide real-time online monitoring systems of chemical companies, and are in favor of further expanding of the scope of application of real-time online monitoring of sulfur dioxide.

The present invention relates to a method for producing at least one surface on a workpiece by means of a material removal tool and a corresponding material removal device. The problem addressed by the present invention is to provide a method for producing any surface on a workpiece in such a way that the surface is produced quickly and at low cost. An error between any surface to be produced and a produced ruled surface should be small. The invention is characterized in that based on any surface to be produced, a movement path of the material removal tool is controlled to produce a ruled surface approximating to said surface to be produced, the movement path being provided in the form of a curve on a dual unit sphere, wherein a point on the curve corresponds to a location and an orientation of the material removal tool. The curve can be produced based on ruling lines, which are converted into points on the dual unit sphere by means of mathematical transformations. Said points are interpolated by means of a dual sphere spline interpolation algorithm to produce the curve. Said curve can then be transformed back into the ruled surface to be produced or can be used directly to follow the movement path of the material removal tool. Likewise, directrix curves of the ruled surface can be determined by means of the dual sphere spline interpolation algorithm. The method is suited in particular for producing the surfaces of components of turbomachinery, such as impellers. Any surfaces can be produced on any materials.

The invention belongs to the field of external use medicine, and particularly relates to a dual-unit multi-group plaster application machine. The dual-unit multi-group plaster application machine comprises a driving roller motor, a dual-unit multi-group plaster, a driving roller A, a driving chain A, a driving roller B, a knife pressing roller speed change motor, a knife pressing roller portal frame, a rubber roller, a knife pressing roller pressure regulator, a knife pressing roller, a pressing cutting blade, a traction strip, a protective layer organizing roller, a plaster raw material pressure tank, a plaster application strip-shaped hole, a plaster application regulation switch, a plaster applicator, a plaster bearing layer organizing roller, a protection layer winding drum material, a plaster surface layer organizing roller, an auxiliary organizing roller, a winding drum material mounting rack, a bearing layer winding drum material and a plaster surface layer winding drum material. The dual-unit multi-group plaster application machine adopts the four-unit operation mode, plaster units are connected virtually and can be selected and separated, and the adaptability of the area of the plaster units of plaster carriers can be adjusted only by replacing the specifications of the knife pressing roller according to symptomatic performances and purposes of produced plasters.

The invention discloses a channel for supplying air oppositely for air conditioners of a railway vehicle. The channel is characterized in that two air conditioning units are respectively arranged at the first and second ends of the vehicle and are connected through a main air supply channel; the main air supply channel is separated into a left air supply cavity and a right air supply cavity through a diagonal separation plate. The main air supply channel is separated into the left air supply cavity and the right air supply cavity through the diagonal separation plate; the structure with the dual units for supply air oppositely is adopted, and air which is supplied into the main air channel at different speeds and with different vectors is mixed, so that the transverse air quantity and longitudinal air quantity of a passenger room are more uniform, the redundancy design of the air conditioning units of the passenger room is realized, and the reliability of the units is improved.

The invention discloses a multi-redundancy networked computer-interlocked human-machine interaction system, comprising: three human-machine interaction units, two network switches, and two logic masters; the three human-machine interaction units are in communicated connection with one another through the two network switches; two Ethernet communication modules in each human-machine interaction unit are connected with the two logic masters through one network switch; the first and second human-machine interaction units act as an operating portion of the system herein; the dual-unit service modeis utilized, two human-machine interaction units are main parts, and the third human-machine interaction unit acts as an operation and maintenance diagnostic portion; when the first or second human-machine interaction unit fails, the third human-machine interaction unit is used instead of the failed first or second human-machine interaction unit. The system herein is simple in structure; no switching equipment is used; reliability and redundancy are high; failure of any part can be discovered in time; no single fault may affect the use of the system.

In a networkable platform device (100), located on the web and having a plurality of user-participants identifiable by means of an identifier, for collecting and processing information on the part of user-participants, which information is stored in memory locations (110) of a platform (100), each memory location being assigned to a plurality of different topics identifiable using an allocated code, a passively automated distribution of information collected on the part of user-participants is enabled. For this purpose, the memory locations (110) are each formed on the platform (100) by a dual unit (DuU), each dual unit (DuU) comprising a first memory location (111) which cannot be edited on the part of an individual user-participant and is assigned to an allocatable topic and provided with initial information (114) formulated on the part of an initial participant, and a second memory location (112) assigned to the first memory location (111), which second memory location can be edited on the part of each individual user-participant and is designed for an input of additional information (113) on the part of the plurality of user-participants with respect to the initial information (114) stored in the first memory location (111).

A dual-unit switching device for the commonly controlled air conditioners in order to choose one from two air conditioner for proper power is composed of PCB and electronic circuit consisting of coding switch connected to I/O pin of single-chip computer in remote-controlled detector and two controllers for both air conditioner. Said controller comprises amplifier, comparator, electronic filter and single-chip computer.

The invention discloses an S-band megawatt dual-unit hot standby transmitter and a control method thereof. The S-band megawatt dual-unit hot standby transmitter comprises two high-power transmitters A and B, a waveguide switch with four ports, a microwave load, antennae and feeder wires, wherein four ports divided into two groups are formed in the waveguide switch and form a cross shape, every two of the four ports are opposite to each other, and the opposite ports are not communicated; output waveguides of the transmitters A and B are connected to one group of opposite ports of the waveguide switch respectively, the microwave load and the feed wires are connected to the other group of opposite ports of the waveguide switch, and output of each transmitter gets to the antennae through the feed wires; the waveguide switch comprises a stator and a rotor, the stator is a framework of the waveguide switch, the four ports are formed in the stator, and the rotor is controlled by a micromotor of the waveguide switch to rotate, and accordingly, the antennae are connected with one of the transmitters A and B. The invention further discloses of the control method of the S-band megawatt dual-unit hot standby transmitter.

The invention discloses a one-station dual-unit stereoscopic garbage disposal station achieving winding and lifting. The one-station dual-unit stereoscopic garbage disposal station comprises a first lifting mechanism for lifting a garbage can and a second lifting mechanism for pulling up the garbage can. The second lifting mechanism is located above the first lifting mechanism. The second liftingmechanism and the first lifting mechanism each comprise multiple oil cylinders. The first lifting mechanism is a first winch, and the second lifting mechanism is a second winch. The first winch is connected with a first rotating shaft through a first belt, an upper connecting wire is wound around the two ends of the first rotating shaft, and an upper universal tray is connected to the upper connecting wire. The second winch is connected with a second rotating shaft through a second belt, a lower connecting wire is wound around the two ends of the second rotating shaft, and a lower universal tray is connected to the lower connecting wire. According to the one-station dual-unit stereoscopic garbage disposal station, a winch structure is adopted for replacing an original oil cylinder structure, the stability of the universal trays is guaranteed, meanwhile, the two universal trays are arranged, garbage cans of different size specifications do not need to be overlapped, and the universalityof the station is increased.

A dual-unit step-up type soft switch converter is composed of two powr diodes, two resonance circuits, and an auxilairy switch. The soft cut-off of auxiliary switch, the soft on-off of power diode and zero-current cut-off of output rectifying diode are realized on the basis that two resonance capacitors whose voltage can not change suddenly and used.

An underwater detection system that uses two remote vessels in proximity to an object of interest in order to accurately obtain a 3D image of that object. One of the vessels is stationary and includes a first transceiver and a vertical receiving array. The second vessel moves over a predetermined path and uses a transmitter to simultaneously send signals to both the transceiver of the first vessel and the object of interest. The signals are bounced off of the object of interest to the vertical receiving array. Various signals are convoluted to produce an accurate three-dimensional array and thus a three-dimensional image of the object of interest.

In a networkable platform device (100), located on the web and having a plurality of user-participants identifiable by means of an identifier, for collecting and processing information on the part of user participants, which information is stored in memory locations (110) of a platform (100), each memory location being assigned to a plurality of different topics identifiable using an allocated code, a passively automated distribution of information collected on the part of user-participants is enabled, in that the memory locations (110) are each formed on the platform (100) by a dual unit (DuU), wherein a dual unit (DuU) respectively comprises a first memory location (111) which cannot be edited on the part of an individual user-participant and is assigned to an allocatable topic and provided with initial information (114) formulated on the part of an initial participant, and a second memory location (112) assigned to the first memory location (111), which second memory location can be edited on the part of each individual user-participant and is designed for an input of additional information (113) on the part of the plurality of user-participants with respect to the initial information stored in the first memory location (111).