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664results about How to "Reduce usage costs" patented technology

Pressure-controlled drilling method based on drilling annulus wellbore multi-phase flow computing

The invention relates to a pressure-controlled drilling method based on drilling annulus wellbore multi-phase flow computing, which comprises the following steps: obtaining basic parameters for drilling wellbore multi-phase flow computing; determining the variety of fluid in wellbore annulus; considering multi-phase multi-component complex flow factors, and establishing a wellbore annulus internal multi-phase flow control equation group; establishing definite conditions for the multi-phase flow control equation group by combining with technical processes under pressure-controlled drilling different working conditions; carrying out grid division on the time and space domains obtained by multi-phase flow computing; carrying out numerical discretion; solving the wellhead back pressure required by pressure-controlled drilling; and adjusting the wellhead throttling valve based on the computed wellhead back pressure value to realize pressure-controlled drilling. Through the adoption of the method, pressure-controlled drilling can be continued under the condition that the drilling fluid contains gas; the method can be applied to the pressure-controlled drilling process of strata highly containing acidic gases; and the computation accuracy is high, the error is small, the control accuracy of pressure-controlled drilling is improved, and the application range is enlarged.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA) +3

Obstacle avoidance path planning method of obstacle avoidance task unrelated artificial potential field guide

The embodiment of the invention provides an obstacle avoidance path planning method of obstacle avoidance task unrelated artificial potential field guide. The obstacle avoidance path planning method comprises the steps of using the energy consumption, end speed and frictional wear of a manipulator as optimization objectives according to the use cost of the space manipulator, and providing a minimum singular value index to which a speed limit is introduced on the basis; providing a gradient potential field offline construction method considering the operating cost of the manipulator according to the minimum singular value of a jacoby matrix to which the speed limit is introduced and the operability, condition number and joint limits of the manipulator; and expanding by using constructed random trees in a gradient potential field guided RRT algorithm, and planning to obtain an obstacle-free operating path of the space manipulator. According to the obstacle avoidance path planning method provided by the embodiment of the invention, when an obstacle avoidance path planning task of the redundant space manipulator is executed, the efficiency of an obstacle avoidance planning algorithm can be improved, and the use cost of the manipulator can be reduced.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Tackifier for drilling fluid, and preparation method and application thereof

The invention provides a tackifier for a drilling fluid, and a preparation method and application thereof. The tackifier is a quadripolymer formed by polymerization of four alkene monomers, wherein the four alkene monomers are selected from a temperature-resistant salt-tolerant monomer, a hydrated monomer and an adsorptive monomer; the temperature-resistant salt-tolerant monomer is selected from an alkenyl sulfonic acid monomer; the hydrated monomer is selected from alkenyl carboxylic acid, alkenyl alkane ketone and double-bond-containing quaternary ammonium salt compounds; and the adsorptive monomer is selected from an alkenyl amide monomer. The tackifier provided by the invention can resist a high temperature of no less than 180 DEG C, is resistant to saturated salt, has remarkable tackifying effect, is low in toxicity and environmentally friendly, and can obviously improve the dehydration and wall building capability of the drilling fluid, thereby effectively reducing the dehydration. The invention solves the downhole complexity possibly caused by the fact that the drilling fluid system can not carry and suspend rock debris and thus can not clear boreholes in time due to reduced viscosity shearing force as a result of poor temperature resistance and salt tolerance of the tackifier in deep well, ultradeep well, horizontal well and extended reach well operations.
Owner:BC P INC CHINA NAT PETROLEUM CORP +2

High molecular electric ground heating module with waterproofness, high temperature resistance and flame-retarding functions

The invention discloses a high molecular electric ground heating module with waterproofness, high temperature resistance and flame-retarding function, which belongs to the field of heating devices. A waterproof layer is coated outside a non-woven fabric layer; the upper layer of a heat-preserving layer is a heating layer; the bottom of the heat-preserving layer is coated with a reflecting film by using a pure metal aluminum foil; the non-woven fabric layer is coated outside the heat-preserving layer, the heating layer and the reflecting film; the waterproof layer is made of a cement-based high molecular waterproof material; the heating layer is a membrane made of a high molecular carbon fiber heating material; the heat-preserving layer is a high-density phenolic aldehyde board; the reflecting film is covered at the bottom of the heat-preserving layer through a pure metal aluminum foil; the layers are bonded by using high-temperature-resistant environment-friendly glue, and are formed by pressing; and the outer periphery of each layer is provided with metal aluminum foil wrappings. The high molecular electric ground heating module has the advantages of attractive, dampness prevention, electric heating transformation efficiency of over 99 percent, saving in electricity and energy, safety, reliability, high insulating property, long service life, quick temperature rise, environment friendliness, health-care physical therapy effect and good health-care effect on human bodies.
Owner:上海本适实业有限公司

System for remotely monitoring and controlling internet of things on basis of GPRS (General Packet Radio Service) network

InactiveCN102469129ARealize distributed remote monitoring and controlReduce network construction costsTransmissionGeneral Packet Radio ServiceTerrain
The invention discloses a system for remotely monitoring and controlling an internet of things on the basis of a GPRS (General Packet Radio Service) network, relating to a monitoring system. A center server with coexistence of two modes such as B/S and C/S is adopted for carrying out data conversion with monitoring terminal equipment and a monitoring center client side by a TCP/IP (Transmission Control Protocol/Internet Protocol) mode so as to realize distributed remote monitoring and controlling. In the system, the operation does not need to create a local area network by self, so that the network creating cost is saved and the reliability is high; and the equipment is general and simple, the cost is low, the one-time investment is less, the use cost is low, the installation and maintenance are convenient, and the operation is safe, no limitation can be caused by the terrain, the landform and the environment, and even no pollution can be caused. The system can be widely applicable to streetlamps, railways, gas, running water, power, environment, petroleum and machines and the like. The system has the advantages of high network access speed, advanced technology, safety, reliability, economy, reasonability, energy conservation, simpleness and convenience in maintenance and strong practicability, and conforms to the trend for development of the conservation-minded society.
Owner:江苏建宇电子科技有限公司

Weighing module

The invention relates to a weighing module which comprises a base and a weighing sensor, wherein the connecting side of the weighing sensor is installed on the base by a fastener; the base is provided with more than two installation holes; both side faces of the weighing sensor are connected with the wall of a spacing groove; the bearing side of the weighing sensor is provided with blind holes in a vertical direction; a top board or/and a bottom board of a frame-shaped rack is provided with installation holes; a bearing piece with spacing holes at the bottom is screwed on the top board of the frame-shaped rack and is fixed with the top board by a fastening bolt; both end surfaces of a rocking column respectively come into contact with the bottom surfaces of the blind holes and the top surfaces of the spacing holes; protective space A is arranged between the upper end surface of the weighing sensor and the bottom surface of the bearing piece; two horizontal spacing bolts are respectively installed on two side boards and positioned on both sides of the weighing sensor; and protective space B is arranged between the end surfaces of the horizontal spacing bolts and both side faces of the weighing sensor. The weighing module has the characteristics of high weighing precision, safety, reliability, convenient installation and maintenance, stable operation, low manufacturing cost and wide application range.
Owner:METTLER TOLEDO (CHANGZHOU) MEASUREMENT TECH CO LTD +2

Embedded system capable of monitoring unlawful act of vehicle

The invention discloses an embedded system capable of monitoring the unlawful act of a vehicle, which relates to the technical field of computer image processing, and comprises the following steps of an implement method: selecting one of a stand-alone connection mode or a network interconnection connection mode, comprising the steps: setting a monitoring region, collecting images, indentifying vehicles, recording unlawful data and recording a record file. A picture for monitoring and recording the unlawful act of a vehicle is collected by the same image collector; a picture for recording an unlawful vehicle licence has high resolution ratio; the image range of the picture and the picture recording the unlawful position of the vehicle is coincident; the recorded unlawful data also comprises a video stream file for recording the unlawful process of the vehicle; and the recorded video file is a series of unit video files the recording duration length of which is more than or equal to 120 hours. The method can monitor and record the various unlawful acts of the vehicle, can provide a powerful proof for traffic accident management and provide an effective clue for law case detection, and can be widely applied to the unlawful management of traffic vehicles.
Owner:云南澜博科技有限公司

Airplane control plane deflection angle measuring system

The invention discloses an airplane control plane deflection angle measuring system, and belongs to the technical field of engineering observation and control. The airplane control plane deflection angle measuring system is characterized by comprising an operation control unit [1], a horizontal stabilizer deflection angle measuring unit [2], an elevator deflection angle measuring unit [3], an aileron deflection angle measuring unit [4], a rudder deflection angle measuring unit [5], a spoiler deflection angle measuring unit [6], a flap deflection angle measuring unit [7], a slat deflection angle measuring unit [8], a field control bus [9], an operation application unit [10], a field power supply [11] and a field power line [12], wherein the operation control unit [1] executes the order of the operation application unit [10], and realizes transmission of control orders, state information and measurement data with the deflection angle measuring units through the field control bus [9]; the field power supply [11] supplies power to the various deflection angle measuring units through the power line [12]. The airplane control plane deflection angle measuring system disclosed by the invention is complete in functions, reasonable and compact in structure, reliable in working, convenient to use, and good in expandability and clipping modularity.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA

Method and device for heating by heat electric heating pump phase-change thermal storage

Disclosed is a thermoelectric heat pump phase change heat storage heating method and a device. When in energized heat storage during the trough electrovalency phase, the thermoelectric chip set is connected with one end of the phase change heat storage materials as the fire end, and the heat energy generated is transferred to the phase change heat storage materials for storage, while the other end of the thermoelectric chip set becomes the cool end and adsorbs the waste heat from the surrounding air. When in heat emission heating, there is provided with two working modes, the first working mode is an energy saving mode, wherein the surrounding air directly exchange the heat with the regenerative phase change heat storage materials to realize the heat release warm; when the first working mode can not satisfy the warm request, the current direction of the thermoelectric chip set is changed, to make the cold and heat end faces changed; one end of the thermoelectric chip set connected with the phase change heat storage materials becomes the cold end, which adsorbs the heat energy of the phase change heat storage materials, and the heat of the other end of the thermoelectric chip set is released for the warm.
Owner:HUNAN UNIV

Network isolation system based on dual one-way channel transmission technology and implementation method thereof

The invention discloses a network isolation system based on a dual one-way channel transmission technology. The system comprises a transmitting end, a receiving end, and a transmitting channel and a feedback channel that are connected between the transmitting end and the receiving end, wherein the transmitting channel comprises network cards separately located at the transmitting end and the receiving end and a one-way transmission component connected with the two network cards, and the feedback channel comprises serial ports separately located at the transmitting end and the receiving end andthe one-way transmission component connected with the two sets of serial ports. The invention also provides a method for implementing the network isolation system based on the dual one-way channel transmission technology. The method includes the following steps: the transmitting end sends data to the receiving end through a one-way optical fiber, and the receiving end feeds the data receiving situation back to the transmitting end through a one-way serial port. Compared with an existing one-way transmission technology, the scheme of the invention is higher in reliability, faster in transmission speed and better in integration level. According to the scheme of the invention, the one-way isolation equipment can be integrated, the use cost can be reduced, and the efficiency can be improved.
Owner:STATE GRID HENAN ELECTRIC POWER +1

Pressure capacitance type sensor substrate cavity-forming method

A substrate cavitation method for the pressure volume sensor has the advantages of high precision, low cost, easy operation and stable quality. The method includes the following steps: (1) forming a silica layer formed by the oxidation on one surface of the selected silicon; (2) coating a photoresist layer on the silica layer and forming a micro structure concave cavity I after exposing and developing, and the material at the bottom of the micro structure concave cavity I is silica; (3) etching the silica layer in the micro structure concave cavity I by means of ICP plasma-etching, and the photoresist layer is the mask, forming a micro structure concave cavity II, the material at the bottom of which is silicon; (4) removing the photoresist layer; (5) coating the photoresist layer again and forming a micro structure concave cavity III corresponding to the micro structure concave cavity II after exposing and developing; (6) etching the silicon wafer to a certain depth in the micro structure concave cavity III by means of ICP plasma-etching, and the photoresist layer is the mask; (7) removing the photoresist layer and obtaining the substrate provided with a micro structure concave cavity IV. The invention is suitable for making the substrate of the depressor sensor.
Owner:杭州科岛微电子有限公司 +1

Mine ventilating fan control system capable of automatically adjusting air quantity

The invention provides a mine ventilating fan control system capable of automatically adjusting air quantity. The mine ventilating fan control system comprises a frequency conversion system, a programmable logic control (PLC) system and an inspection and monitoring system. The frequency conversion system comprises a power source wire leading-in device, a power source feed device and a frequency converter. The PLC system comprises a control power source wire leading-in device, a control power source feed device and a PLC device. The inspection and monitoring system comprises an operating platform, a display screen, a wind pressure transducer, a vibration transducer, a temperature transducer, and the like. A closed-loop control link is set in the PLC device, and the output frequency of the frequency converter is controlled by taking ventilating condition signals of a working face, which are acquired from the sensors or a mine local area network, as closed-loop feedback signals according to a difference between a set value and a practical sampled value, so as to automatically adjust the air quantity of mine ventilating fans. Two sets of facilities with relative independence are arranged in a speed adjusting link, the control link, an inspection link and an operating link to respectively perform control and online inspection on the two mine ventilating fans, so that the mutual switchover of the two mine ventilating fans from working to standby can be completed in a short time.
Owner:LUOYANG YUANCHUANG ELECTRIC +1
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