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748 results about "Communicating vessels" patented technology
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Communicating vessels is a system of containers filled with a homogeneous fluid, connected at the base and subjected to the same atmospheric pressure. When the liquid settles, it balances out to the same level in all of the containers regardless of their shape and volume. If additional liquid is added to one vessel, a new equal level will be established in all the connected vessels. This process is part of Stevin's Law and occurs because gravity and pressure are constant in each vessel (hydrostatic pressure).
Measuring system in a fluid circuit of a continuous inkjet printer, related fluid circuit and block designed to implement said measuring system
InactiveUS20120299989A1Less-expensive to assembleLess-expensive to manufactureOther printing apparatusCommunicating vesselsEngineering
The invention concerns a measuring system in a fluid circuit of a continuous inkjet printer. According to the invention, a system for measuring the quantity of ink is realized using a continuous sensor (15) equipping a measuring tank (12), which is first emptied then connected by communicating vessel with an intermediate tank (11) storing the ink which, pressurized, supplies the printing head and The measuring system advantageously constitutes a multifunctional system since it makes it possible, using a dedicated constant level tank (13) communicating with the intermediate tank (11) and also by communicating vessel with the measuring tank (12), to measure the viscosity of the ink and the correction thereof if necessary by adding solvent from a dedicated solvent tank (14).
Owner:MARKEM IMAJE HLDG
Jagged annular needleless static spinning device and application method thereof
ActiveCN105506758ARealize automatic supplyEasy to operateFilament/thread formingCollection systemElectrospinning
The invention relates to a jagged annular needleless static spinning device and an application method thereof. The device comprises a liquid supply system and a nanofiber collection system. The liquid supply system is in the structure of a communicating vessel composed of a liquid storage bottle and a jagged annular needleless sprayer. The jagged annular needleless sprayer is in the gap structure composed of an outer annular liquid groove and an inner annular liquid groove. The center of the bottom of the outer annular liquid groove is provided with a metal pipe. The center of the bottom of the liquid storage bottle is connected with one end of a liquid guide pipe, the other end of which is connected with the metal pipe. The liquid guide pipe is provided with a switch. By turning off the switch on the liquid guide pipe, a proper amount of polymer solutions is added into the liquid storage bottle. By turning on the switch, polymer solutions flow into the annular gap formed by the jagged outer annular liquid groove and the inner annular liquid groove. By adjusting the height of the liquid storage bottle, polymer solutions can overflow the annular gap. By turning on a motor, a metal cylinder is guaranteed to normally rotate at the certain speed. By turing on a high-voltage power supply, voltage is slowly increased. The jagged annular needleless static spinning device and the application method thereof help to achieve automatic supply of solutions to the sprayer and operation is performed conveniently.
Owner:DONGHUA UNIV
Solenoid-drive liquid metallic rheostat
ActiveCN103280285AZero noiseNo moving partsLiquid resistorsElectrical resistance and conductanceCopper wire
The invention relates to a solenoid-drive liquid metallic rheostat which is characterized by comprising a casing, paraffin, a copper wire, a communicating vessel, liquid metal and an electromagnetic pump. The casing is filled with the paraffin and the copper wire; the communicating vessel is located on one side of the casing and is connected with one end of the copper wire; the electromagnetic pump is mounted at the bottom of the communicating vessel; and the liquid metal is stored in the communicating vessel, moves up and down under the driving of the electromagnetic pump and is contacted with the copper wire at different height positions, so that the length of the copper wire placed in a circuit is hanged and the variable resistance effect is achieved. The solenoid-drive liquid metallic rheostat takes the copper wire as the main body, utilizes the electromagnetic pump to drive the liquid metal to move to adjust the copper wire resistance, and adopts the paraffin to absorb joule heat, so that the whole system is stable and reliable, small in size, light in weight and low in cost, and can be widely applied to the field of soft starting of motors.
Owner:BEIJING EMIKON TECH DEV
Pressure-regulating and pressure-retaining system for pressure-retained transferring of deep-sea sediments and control method of pressure-regulating and pressure-retaining system
ActiveCN104535395AAutomatic adjustment of overflow pressureTo achieve the purpose of maintaining pressurePreparing sample for investigationInternal pressureCommunicating vessels
The invention relates to the technical field of hydraulic transmission and aims to provide a pressure-regulating and pressure-retaining system for pressure-retained transferring of deep-sea sediments and a control method of the pressure-regulating and pressure-retaining system. The pressure-regulating and pressure-retaining system for pressure-retained transferring of the deep-sea sediments comprises a low-pressure pump, a high-pressure pump, check valves, filters, pressure sensors, stop valves, an energy accumulator and a proportional overflow valve. The control method is used for realizing a pressure-retained transferring process of a pressure-retained transferring device and comprises the processes of a pressurizing and pressure-retaining process of the pressure-retained transferring device, a pressurizing and pressure-retaining process of a subsample transferring cylinder, and a process of mounting a communicating vessel between ball valves I and II and pressurizing. According to the pressure-regulating and pressure-retaining system, a deep-sea environment at any depth can be simulated within a specialized range, the pressure in a deep-sea sediment sampler can be measured through the pressure sensor I and the overflow pressure of the pressure-retained transferring device can be automatically adjusted, so that the pressure in the pressure-retained transferring device and the pressure in the sampler are consistent and the purpose of pressure retaining is achieved.
Owner:ZHEJIANG UNIV
Measuring system in a fluid circuit of a continuous inkjet printer, related fluid circuit and block designed to implement said measuring system
InactiveUS9102157B2Less-expensive to assembleLess-expensive to manufactureOther printing apparatusCommunicating vesselsEngineering
Owner:MARKEM IMAJE HLDG
Device and method for exploiting seafloor natural gas hydrates through continuously injecting hot seawater
The invention provides a device for exploiting seafloor natural gas hydrates through continuously injecting hot seawater. The device comprises a plurality of water supply pipes (1), a plurality of heat radiation pipes (3) and at least one water outlet pipe (2), wherein the inlet end of each water supply pipe (1) is arranged at the offshore plane; the position of the inlet end of each water supply pipe (1) is higher than the sea level; the heat radiation pipes (3) are of cobweb type or hexagonal reticular or branch type or annular structures and are distributed at a seafloor hydrate layer (6); the outlet end of the water outlet pipe (2) is arranged at the offshore plane; the outlet end of the water outlet pipe (2) is flush with or below the water inlet ends of the water supply pipes (1); and the plurality of water supply pipes (1), the plurality of heat radiation pipes (3) and the at least one water outlet pipe (2) are sequentially connected to form a communicator. The hydrostatic transformation principle of the communicator is sufficiently utilized; high-temperature seawater at the sea surface layer is continuously pumped through the heat radiation pipes laid in the seafloor hydrate layer only by a low-power centrifugal pump in an ordinary model. Heat radiation pipelines are of reticular structures, so that the heat radiation efficiency can be improved; the heat radiation area is expanded; and the exploitation efficiency is improved.
Owner:INST OF MECHANICS - CHINESE ACAD OF SCI
Dynamometer measurement standard apparatus
InactiveCN101458142AAccurate measurement and calibrationAccurate checkFluid pressure measurementForce/torque/work measurement apparatus calibration/testingHydraulic cylinderCommunicating vessels
The invention relates to a standard apparatus for force measurement, comprising a big hydraulic cylinder and a small hydraulic cylinder; wherein, a weight lifting mechanism is fixed on a piston rod of the small hydraulic cylinder, the weight is arranged below the weight lifting mechanism; the small hydraulic cylinder is communicated with the big hydraulic cylinder to form a communicating vessel by a communicating pipe, a force application mechanism is arranged on the piston rod of the big hydraulic cylinder and the force application mechanism comprises a top beam, a bottom beam and two connecting bars, a movable platform is arranged on two pillar stiffeners which are fixed on a pedestal of the standard apparatus and the movable platform is connected with the pillar stiffeners with a screw thread pair, a load-bearing surface is arranged under the movable platform, another load-bearing surface is also arranged on the upper surface of the bottom beam of the force application platform, and the two load-bearing surfaces correspond with each other. In the invention, by means of static press ram-cylinder system, the Pascal's principle is adopted, a small force value is amplified to a standard large force value, thus reducing the effect of friction force to the maximum extent; furthermore, measurement correction, checking, definition and rating can be carried out on a force sensor with large force value accurately, thus being beneficial to major scientific research projects.
Owner:KUNSHAN INNOVATION TESTING INSTR CO LTD +1
Self-closed water-saving device, method and toilet stool
ActiveCN101956416AFlush water savingIncreased rushing speed towards the drainpipeUrinalsWater closetsWater savingWater source
Owner:FOSHAN HEGII SANITARY WARES
Permeable tailings pond seepage drainage structure
InactiveCN101929197AImprove permeabilityReduce air resistanceSewage drainingSoil preservationCommunicating vesselsDrain tube
The invention discloses a permeable tailings pond seepage drainage structure. A horizontal seepage drainage body, a vertical seepage drainage body and a water drainage pipe jointly form a water drainage system, wherein seepage drainage pipes in the horizontal seepage drainage body and the vertical seepage drainage body are connected and communicated by using communicating vessels; and a horizontal seepage drainage pipe of the horizontal seepage drainage body is connected and communicated with the water drainage pipe by using the communicating vessels. Seepage drainage systems are sequentially buried in a tailings accumulation dam. The seepage drainage pipes are formed by packaging filter screens on seepage drainage pipe bodies; the seepage drainage pipe bodies are provided with seepage drainage grooves; the bottoms of the seepage drainage grooves are provided with seepage drainage holes communicated with the insides of the seepage drainage pipe bodies. The vertical seepage drainage body and the horizontal seepage drainage body are used together or independently to accumulate water, and the horizontal seepage drainage body and the water drainage pipe are used to lead water so as to drain water in the seepage drainage body out of the dam; and the seepage drainage structure adopts the seepage drainage bodies and the water drainage pipe which can be cleaned and dredged. The seepage drainage system has the advantages of high permeability, small air resistance, good seepage drainage effect and convenient, economic and durable later maintenance and management.
Owner:中冶沈勘工程技术有限公司
Experimental apparatus for evaluating coalbed methane cave well completion
The invention provides an experimental apparatus for evaluating coalbed methane cave well completion. The device comprises a cube coal petrography model arranged in a frame, wherein the bottom surface of the coal petrography model is provided with a wellbore hole simulator extending upwards, the top surface of the coal petrography model is provided with a plurality of pressure taps extending downwards, a seal rubber cover is arranged outside the coal petrography model, press plates are fixed on the six side faces which are at the outer side of the rubber cover and correspond to the coal petrography model, through holes are respectively arranged at on the press plates at the upper side and the lower side and at the parts of the rubber cover, which correspond to the wellbore hole simulator and the pressure taps, and each pressure tap is internally provided with a pressure test pipe with a pressure sensor; three server pressuring oil cylinders are arranged in three directions in an outer space of the coal petrography model; and a communicating vessel is arranged on the press plate at the lower side in a sealing way and is communicated with the wellbore hole simulator, the upper part of the communicating vessel is provided with a gas inlet pipe, a water inlet pipe and a pressure test pipe with the pressure sensor, the lower part of the communicating vessel is provided with an electric ball vale, the lower end of the electric ball vale is connected with a pressure release pipe, and the bottom end of the pressure release pipe is correspondingly provided with a pulverized coal collecting water tank.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Lifting roadblock
ActiveCN101942814ANo stagnant waterImprove reliabilityTraffic restrictionsLocking mechanismGas spring
The invention discloses a lifting roadblock which comprises an outer cylinder body and an inner cylinder body, a gas spring is arranged between the bottom of the outer cylinder body and the top of the inner cylinder body, the gas spring can drive the inner cylinder body to lift, a locking mechanism is arranged between the outer cylinder body and the inner cylinder body, and the locking mechanism can lock the inner cylinder body in a lifting state and a retracting state; the lifting roadblock is also provided with a drainage pipe which has an upper end part and a lower end part, the lower end part of the drainage pipe is communicated with the inside of the inner cylinder body, the upper end part is communicated with the outside, the upper end part of the drainage pipe is provided with a one-way valve, and when the pressure in the drainage pipe is greater than the external atmosphere pressure, the one-way valve is opened, and the inside of the inner cylinder body is communicated with the outside by the drainage pipe. By setting the drainage pipe which communicates the inside of a communicating vessel and the outside, the lifting roadblock discharges accumulated water that penetrates into the lifting roadblock through various gaps every time the inner cylinder body is pressed, thus improving the using reliability of the lifting roadblock.
Owner:ZHANGJIAGANG GOLDNET FENCING SYST
Rolling friction cylinder hydraulic type force standard machine
InactiveCN102175387ASimple structureReduce frictionFluid pressure measurementForce/torque/work measurement apparatus calibration/testingEngineeringCommunicating vessels
The invention provides a rolling friction cylinder hydraulic type force standard machine which belongs to the technical field of mechanical engineering. The main body of the hydraulic type force standard machine consists of a rolling friction plunger type hydraulic cylinder I used as the core and a communicating vessel formed by two rolling friction plunger type hydraulic cylinders according to the Pascal principle. The complete hydraulic type force standard machine also comprises a force measuring instrument, a frame, a rolling friction cylinder II, a displacement sensor, a counterweight, a hydraulic oil feeding system and a hydraulic subsidiary loop. The force standard machine has high working precision; oil cylinder structure and the manufacturing process are simplified; the loading time can be efficiently controlled in the working process; the high pressure hydraulic pump is unnecessary; no pressure and flow pulsation phenomenon exists; the flow control is precise and stable; the minimum stable flow requirement can be met by controlling the precise displacement of plungers; and the stable and accurate system working pressure is maintained.
Owner:JILIN UNIV
Method and apparatus for acquiring garlic flake with sprout section upwards, and seed-sowing machine using the apparatus
The invention discloses a method for obtaining garlic bulblets with shoots up and roots down. A garlic bulblet is placed in a hopper-shaped container full of water which is then drained from the lower port of the container; water is used as a straightening aid and the difference from buoyancy bearing by the shoot part and the root part of the garlic bulblet is utilized to obtain the garlic bulblet with shoot up and root down. As to an application device of the method, a straightening wheel is fixed at the upper part of a water tank and a communicating vessel is installed at the front part of the water tank and connected with an external water tank by a water pipe; as to a garlic seeder which utilizes the device, a seed gripping assembly and a straightening device are respectively installed the rear part and the middle part above a frame and the seed gripping assembly is connected with the straightening assembly by a guiding groove; a planting assembly and a power and power transmission assembly are respectively installed at the front part and the rear part below the frame and the planting assembly is connected with the straightening device by a seed conveying chain. The method designed by the invention is simple and the application device is easy to realize, thus garlic seeds are characterized by straight appearance, upward garlic shoots and early emergence after being sown by a garlic seeder.
Owner:李华峰
Brillouin distributed optical fiber sensing based structural deflection and subsidence monitoring system
InactiveCN102914289ARealize long-term online monitoringImprove detection accuracyUsing optical meansHydrostatic levellingFuel tankCommunicating vessels
A Brillouin distributed optical fiber sensing based structural deflection and subsidence monitoring system comprises a deflection / subsidence physical quantity conversion portion based on the principle of communicating vessels, a physical parameter sensing portion based on the Brillouin distributed optical fiber sensing technology and a deflection / subsidence evaluation system, and is specifically characterized in that the liquid level in an oil tank is kept at a certain height, oil is delivered to sensing vessels fixed on a measured structure through an oil pressure header pipe and branch pipes, an optical fiber is wound through pulleys and fixed on a piston and a bottom plate in each vessel, and when the deflection / subsidence of a measured point is increased, the strain of each corresponding optical fiber is increased, an internal free optical fiber section is just influenced by the temperature and can implement temperature compensation for the other optical fibers, the Brillouin distributed optical fiber sensing technology is used for strain and temperature sensing, and the evaluation system evaluates deflection / subsidence finally. The Brillouin distributed optical fiber sensing based structural deflection and subsidence monitoring system is flexible to arrange and capable of achieving a great quantity of series connection and suitable for long-term health monitoring of large infrastructures.
Owner:无锡苏积传感科技有限公司
Container module ecological cycle aquaculture system
ActiveCN103960190AExtension of timeImprove filtering effectPisciculture and aquariaWater pipeCommunicating vessels
A container module ecological cycle aquaculture system comprises a culture unit, a bio-filter unit and a physical filter unit. The water level of the culture unit is kept higher than that of the physical filter unit. The container module ecological cycle aquaculture system further comprises a first straight water pipe, a second straight water pipe, a third longitudinal water pipe, and an aerator; the bottom of the culture unit is communicated with the bottom of the physical filter unit through the first straight water pipe, water in the culture unit automatically flows to the physical filter unit through the first straight water pipe according to the principle that liquid levels in communicated devices with the bottoms communicated are equal; the upper portion of the physical filter unit is communicated with the upper portion of the bio-filter unit through the second straight water pipe; water in the physical filter unit overflows to the bio-filter unit through the second straight water pipe; the bottom of the third longitudinal water pipe is communicated with the bottom of the bio-filter unit, and the top of the third longitudinal water pipe is communicated with the upper portion of the culture unit; water in the bio-filter unit is automatically guided to the third longitudinal water pipe according to the principle that the liquid levels in communicated devices with the bottoms communicated are equal; the aerator is disposed on the third longitudinal water pipe so that water in the upper portion of the third longitudinal water pipe and bubbles created by aerating overflow to the culture unit.
Owner:李锡达
Linear motor radiator
InactiveCN101132137AFast coolingImprove efficiencyMagnetic circuit stationary partsCooling/ventillation arrangementCommunicating vesselsEngineering
This invention relates a linear motor cooler. The cooling water tube of the cooler is inserted into the iron-core of the motor and placed in the wire trough close to the coil. The two cooling water tubes are connected by a connecting piece. The double cooling liquid pass-way of the other end of the cooling water tube is connected by an external connector. An then connected are inlet and outlet to form a complete cooling loop. Then the same is linked with an external circulation cooler. The advantages are: quick cooling, high efficiency, compact structure and small space occupation.
Owner:TSINGHUA UNIV
Air vent for liquid containers, based on the principle of communicating vessels
AIR VENT FOR LIQUID CONTAINERS BASED ON THE PRINCIPLE OF COMMUNICATING VESSELS, developed to be used in different types of containers, i.e. baby bottles, flask, or other similar recipients (1) for the conditioning of any liquid easily poured through the upper spout (2) combined with any type of lid (3) to close the aforesaid flask (1); which also may be manufactured using any kind of material, as also it is considered upper spout (2) any outlet for the liquid inside the flask or container (1), where this spout can have the characteristics known to a nipple or a hard plastic spout or even a metal spout, as those used in olive oil cans, be they retractile or not, such container (1) includes an air vent (4), defined by a system based on the principle of communicating vessels and in the balance of pressures, defined by a duct of an adequate diameter (5) placed in a vertical or oblique manner, whose lower end (6) is placed inside and in the bottom of the flask (1), while the upper end (7) completely open, is placed outside and at about the height of the lid (3), where the mentioned end configures external air inlet to the bottom of the flask or lower end (6), when the aforesaid flask is sufficiently poured, so that the liquid inside the duct or air vent tube (5) may go to the bottom of the container, enabling the free flow of external air from the entrance (7) to the bottom of the container (6), without passing through the liquid (L) and blocking the formation of vacuum in the bottom of the container (1), before even this same liquid be discharged or sucked from the container (1).
Owner:CARVALHO DAVID DE
Variable Capacitance with Dielectric Fluid
InactiveUS20080037197A1Increase capacitanceCapacitor with electrode area variationCapacitor with electrode distance variationDielectricCapacitance
The variable capacitance (1) according to the invention is based on a novel principle: a dielectric fluid (20) is placed in the air gap constituted by two capacitor electrodes (12, 14), the fluid being able to be displaced in a direction and outside the cavity (10) formed between said two electrodes (12, 14). Advantageously, the dielectric fluid (20) is displaced according to the principle of communicating vessels, with the presence of a second cavity (30) in fluidic relation with the first cavity. Actuation electrodes (46, 48) in the second cavity (30) induce the deflection of a membrane (44) in order to modify the relative heights of fluidic liquid in the two cavities (10, 30).
Owner:COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Constant-volume gas-bearing coal gas-solid coupling physical and mechanical parameter testing device and testing method
ActiveCN104614298ARealize quantitative inflationRealize visual real-time monitoring functionPermeability/surface area analysisCouplingDesorption
The invention discloses a constant-volume gas-bearing coal gas-solid coupling physical and mechanical parameter testing device and a testing method. The testing device comprises a visualized loading system for quantitatively inflating a test piece, triaxially loading and unloading and visually monitoring the whole process in real time, a constant volume system for realizing constant volume in an axial pressurizing process, and a normal-pressure visualized gas volume measurement system for quantitatively unloading the confining pressure and visually monitoring the adsorption and desorption process of the test piece. The testing device has the beneficial effects that an adsorption and desorption channel of the axis of a pressurized head can be used for measuring the adsorption and desorption mount of the test piece to gas, the constant volume system can realize the constant volume in the axial pressurizing process to eliminate the interference of pressure intensity change to the testing process, the normal-pressure visualized gas volume measurement system adopts the theory of communicating vessels and a quantitative drainage method to transform colourless and invisible gas to a normal pressure state, therefore, the visualized observation and real-time data acquisition can be realized during testing.
Owner:SHANDONG UNIV
Integrated device for fumigating, freezing, storing and transporting gametes based on liquid nitrogen
ActiveCN102616472AGuarantee safe and reliableEasy to implementLiving organism packagingShock-sensitive articlesThermal insulationCommunicating vessels
An integrated device for fumigating, freezing, storing and transporting gametes based on ultra-low temperature liquid nitrogen comprises a movable trolley, a primary liquid nitrogen storage tank, a storage tank thermal insulation cover, a liquid nitrogen recovery tank, a low-temperature valve, a gamete carrier frame and a temperature feedback device. The primary liquid nitrogen storage tank adopts polyurethane insulation materials or vacuum multilayer insulation to keep warm, is provided with a polyurethane insulation cover, and can achieve that the outer surface of a storage tank body does not frost and dew. The primary liquid nitrogen storage tank is design in a form that a cushion chamber and an operating chamber are separated to form a communicating vessel, stability of a liquid level and the temperature of the operating chamber is guaranteed, and serious fluctuation caused in a liquid adding process is avoided. Temperature measuring and displaying functions are provided, and temperature information is used for adjusting the height of the liquid level simultaneously. The integrated device can achieve single-step fumigation and safety transportation of the gametes.
Owner:SHANGHAI JIAO TONG UNIV
Mine horizontal hydraulic bracket
InactiveCN106948848AAchieve reductionPlay a damping roleProps/chocksCommunicating vesselsBottom pressure
The invention discloses a horizontal hydraulic support for mines, which includes a support plate, a hydraulic cylinder is fixed at the bottom of the support plate, the bottom of the hydraulic cylinder is connected to a damping cylinder, the damping cylinder is also connected to the bottom of a pressure cylinder, and the top of the pressure cylinder is connected to an air pump; in the present invention, Since the hydraulic oil in the hydraulic cylinder under the support plate is connected to each other, according to the principle of the connector, the hydraulic pressure will keep the support plate level at this time, the air pump will inflate the pressure cylinder, and the high-pressure gas will push the hydraulic oil in the pressure cylinder into the sleeve, pushing the first The first piston moves upwards, the air pump reverses, and the gas in the pressure cylinder is pumped out, so that the support plate can be lowered; when vibration occurs, the first piston moves up and down in the sleeve due to the force of the vibration, and presses the hydraulic oil in the damping cylinder. Due to the S-shaped distribution of the damping hole, the hydraulic oil rubs against the inner wall of the damping hole when it passes through, converting the mechanical energy of the vibration into internal energy, and the blocking plate in the damping hole can play a damping role, which can effectively suppress the vibration .
Owner:ANHUI KEXIN MINING MACHINERY MFG
Extraction pipe, extraction system and downwards-drilling extraction method
ActiveCN103061796AIncrease extraction concentrationDrainageGas removalCommunicating vesselsEngineering
The invention discloses an extraction pipe, an extraction system and a downwards-drilling extraction method. The extraction pipe comprises a wall protection sleeve and a ventilation pipe, wherein the wall protection sleeve and the ventilation are abreast and fixedly arranged, a first opening is arranged on the lateral wall of one end of the ventilation pipe, a second opening is arranged on the wall protection sleeve at the corresponding position, and the first opening and the second opening are communicated. The ventilation pipe and the wall protection pipe of the extraction pipe are communicated through the first opening, and other portions of the ventilation and the wall protection sleeve are not communicated. In an extraction process, the ventilation pipe and the wall protection sleeve form a communicating vessel, so that deposited water in the wall protection sleeve can be extracted easily. After water is extracted, gas in coal seams can enter the wall protection sleeve via through holes on the wall protection pipe. Thus, gas extraction concentration is improved.
Owner:HUAINAN MINING IND GRP
Method for determining whether liquid accumulation exists in gas well or not and determining liquid accumulation degree
ActiveCN104504611ASimple methodThe method is simple and feasibleData processing applicationsLiquid densityLiquid height
The invention relates to the determination of the liquid level height difference of a well casing of a gas well in the field of gas field development, provides a method for determining the liquid level height difference of the well casing of a liquid accumulation gas well by utilizing the communicating vessel principle, and particularly relates to a method for determining whether liquid accumulation exists in a gas well or not and determining the liquid accumulation degree. According to the method, firstly, the oil pressure, the casing pressure, the gas density and the liquid density of the gas well during well closing are obtained; secondly, the accumulation liquid height difference of the well casing of the gas well is obtained through the calculation of the oil pressure, the casing pressure, the gas density and the liquid density, and the liquid accumulation and the liquid accumulation degree are judged through the accumulation liquid height difference. The accumulation liquid height difference of the well casing of the gas well can be determined through inputting and obtaining oil pressure and casing pressure data of the gas well after the well closing, only well closing oil pressure and casing pressure data needs to be specified, and a well testing instrument does not need to be placed into the well bottom. Compared with the prior art, the method has the advantages that the method is simple and convenient, and the cost is lower.
Owner:PETROCHINA CO LTD
Water supplying device
InactiveCN102224798ASimple structureContinuous irrigationSelf-acting watering devicesWatering devicesCommunicating vesselsEngineering
The invention belongs to the gardening field, and discloses a water supplying device. The water supplying device comprises a support and a water tank fixed on the support, wherein the tank body of the water tank is provided with a water inlet pipe; a lever is hinged on the tank body; the right end of the lever is connected with a floater; the lever is connected with a water pipe plug; the water pipe plug is matched with the water outlet of the water inlet pipe; and the tank body is provided with a first drain pipe. The water supplying device disclosed by the invention can control the water delivery in the water tank through a lever-floater mechanism hinged in the water tank, and ensures that a certain amount of water is kept in the water tank all the time. As the water tank and a flower stand to be watered can form a communicating vessel structure, plants on the flower stand can be continuously watered. The water supplying device in the invention has a simple structure and low construction and management cost, is very suitable for urban utilization, is free from electric power drive, saves energy, protects environment and is applicable to large-area popularization.
Owner:BEIJING FORESTRY UNIVERSITY
Double-hydraulic-cylinder pressure regulating and maintaining system for pressure maintaining transfer and control method thereof
ActiveCN104564855APrecise pressure controlQuick responseServomotorsFluid-pressure actuator componentsHydraulic cylinderSolenoid valve
The invention relates to the technical field of hydraulic transmission, and aims to provide a double-hydraulic-cylinder pressure regulating and maintaining system for pressure maintaining transfer and a control method of the double-hydraulic-cylinder pressure regulating and maintaining system. The double-hydraulic-cylinder pressure regulating and maintaining system for pressure maintaining transfer comprises hydraulic pumps, one-way valves, one-way solenoid valves, a hand-operated reversing valve, filters, pressure sensors, an energy accumulator, a proportional overflow valve, an overflow valve and hydraulic cylinders. The control method comprises the steps of a pressurizing and pressure maintaining process of a pressure maintaining transfer device, a pressurizing and pressure maintaining process of a sub-sample transfer tube, and a process of installation of a communicating device between a ball valve I and a ball valve II and pressurization. According to the double-hydraulic-cylinder pressure regulating and maintaining system for pressure maintaining transfer and the control method of the double-hydraulic-cylinder pressure regulating and maintaining system, the mode that the seawater hydraulic cylinder and the oil-filled hydraulic cylinder are combined is adopted, the ratio of the piston area of the oil-filled hydraulic cylinder to the piston area of the seawater hydraulic cylinder is increased, the working pressure in the hydraulic cylinder II can be remarkably reduced, and therefore selection of a corrosion-resistant high-pressure seawater pump with high manufacturing cost is avoided, and the parameter requirement and the manufacturing cost of the hydraulic oil pumps are remarkably reduced.
Owner:ZHEJIANG UNIV
Novel thermal circulation system
ActiveCN101560892AReasonable designSimple structureSteam engine plantsLiquid mediumCommunicating vessels
The invention relates to a thermal circulation technology, in particular to a novel thermal circulation system which adopts a plurality of liquid storage devices connected in series or in parallel so as to achieve the object of repeatedly using the clean energy resource continuously and effectively. The novel thermal circulation system is characterized in that the system is internally provided with more than two liquid storage devices and more than one pipelines with the high pressures and low pressures communicated with each other; the high pressure balance is adopted inside the system; and the liquid medium flows from the low pressure end to the high pressure end by the communicating vessel principle and the terrain position height difference at which the liquid medium of heat energy conversion is stored or the specific weight ratio of the liquid medium.
Owner:福建省创隆电器科技有限公司
Liquid-solid mixing medium vibration isolator
InactiveCN101363494AEffective absorptionEfficient lossSpringsLiquid based dampersHydraulic cylinderCommunicating vessels
The invention relates to a liquid-solid mixed medium vibration isolator, belonging to the field of hydraulic vibration isolation and vibration damping technology. The invention is characterized in that the liquid-solid mixed medium vibration isolator comprises a hydraulic cylinder (3), a guide sleeve (2), a piston rod and a piston (6), wherein the hydraulic cylinder (3) is internally loaded with a liquid-solid mixed medium (7) which is composed of an oil resistant solid deformation unit and hydraulic medium. Another deformation form is as follows: a fluid chamber is internally provided with hydraulic medium, the hydraulic cylinder is further connected with a communicating vessel type cylinder, which is internally loaded with the liquid-solid mixed medium, through a pipeline. The parameters of the vibration isolator can be accurately calculated and designed; according to concrete vibration isolation requirements, excellent vibration isolation and damping performances can be realized through different combinations of the solid deformation unit; if required, the vibration isolator can be conveniently and quickly repaired and replaced.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Automobile overweight detecting and intercepting device of bridge
ActiveCN109653128AIncrease heightGuaranteed stabilityTraffic signalsRoad signsCommunicating vesselsOverweight
The invention discloses an automobile overweight detecting and intercepting device of a bridge. The automobile overweight detecting and intercepting device comprises a foundation. A mounting groove isformed in the upper surface of the foundation, an equipment tank is placed in the mounting groove, a plurality of springs are uniformly welded on the inner bottom wall of the equipment tank, a bearing plate is jointly welded at the upper ends of the multiple springs, two first hollow seats are symmetrically welded on the inner bottom wall of the equipment tank, two piston rods are symmetrically welded on the lower surface of the bearing plate, the lower end of each piston rod extends into the corresponding first hollow seat and is connected with a first piston, two second hollow seats are symmetrically mounted on the foundation, and a communicating pipe is arranged between each second hollow seat and the corresponding first hollow seat in a connected manner. The automobile overweight detecting and intercepting device has the advantages that the automobile overweight detecting and intercepting device is ingenious in structure and can be conveniently and quickly used; intercepting rodscan be switched between vertical states and horizontal states by the aid of resilience effects of the springs and principles of communicating vessels, and accordingly the purposes of detecting overweight of automobiles and intercepting the automobiles further can be achieved.
Owner:山东鑫阳专用汽车制造有限公司
Device and method for preparing zinc powder and pulp
The embodiment of the invention discloses a device for preparing zinc powder and pulp. The device for preparing zinc powder comprises a zinc melting furnace, an electrically-heated insulated flow pipe, a heat preserving furnace, an atomizing nozzle, an atomizing tower, a high pressure water system, a wet vibrating screen and a segmented settling tank, wherein the heat preserving furnace and the zinc melting furnace constitute a U-shaped communicating vessel by the electrically-heated insulated flow pipe, and the zinc melting furnace, the electrically-heated insulated flow pipe and the heat preserving furnace constitute a horizontal and steady liquid-zinc flow channel, thereby ensuring that the liquid level of the liquid zinc in the heat preserving furnace is constant and the liquid zinc is clean, the flow velocity, flow quantity and temperature of the liquid zinc flowing out of the heat preserving furnace are stable, and then realizing the continuous stable production of the zinc powder. In addition, in the invention, the liquid zinc can be atomized by a high pressure atomized water flow without air atomization, which avoids the zinc powder from contacting with air, therefore, theprepared zinc powder has the advantages of no oxide film on the surface, small and uniform particle size, large specific surface area and good activity, and is helpful for the smooth processing of the zinc hydrometallurgy.
Owner:ZHUZHOU FLASHLIGHT IND FURNACE
Fishway with automatically-lifting water level
A fishway with automatically-lifting water level comprises three stages of fish chambers in ladder-like arrangement, wherein the inner side of a water inlet wall of the first stage of fish chamber is provided with a first siphon communicated with the outer part, the outer side of a water outlet wall of the first stage of fish chamber is provided with a second siphon, the second stage of fish chamber is communicated with a second communicating vessel, a second twisting type opening-closing door is matched with a second fish-passing gate opening, a water outlet wall of the second stage of fish chamber is provided with a third fish-passing gate opening, a turning plate gate is mounted on a fish outlet formed in the lower part of a water outlet wall of the third stage of fish chamber, and the height of the upper end of the first stage of fish chamber is greater than that of the upper end of the third stage of fish chamber. The fishway with the automatically-lifting water level can be used for solving the problems of the existing fishways, is smaller in length, convenient to arrange, suitable for different terrain and geology conditions, and well adaptive to the waterhead size change of the upstream and the downstream of a reservoir and the water level change of the reservoir; the water level automatically lifts, labor needed during passing of fish is saved, and fish in different sizes can pass; the whole fishway can automatically run without additional power, and energy is saved.
Owner:CHINA THREE GORGES UNIV
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