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73 results about "Gravitational effect" patented technology

The one effect is gravity. That is, the gravitational force is one way of explaining the phenomenon that we call gravity. Since it is a force, the effect is the same as any force: a contribution to the acceleration in the direction of the force.

Trajectory boosting segment state deviation parsing and calculating method under action of disturbance gravitation

The invention provides a trajectory boosting segment state deviation parsing and calculating method under the action of disturbance gravitation. In particular, a ballistic missile serves as a research object, and the problem of rapidly working out the ballistic missile boosting segment state deviation is solved. The method includes the specific steps that firstly, a standard trajectory is designed and generated according to a launch mission; secondly, the state deviation of each point of the boosting segment is worked out through a state deviation parsing method induced by the perturbation thought; then, the apparent acceleration deviation of the corresponding point is calculated based on the state deviation of each point of the boosting trajectory, the deviation is regarded as a high-order item of disturbance gravitation, and meanwhile compensation is conducted; finally, the state deviation result is amended through a Newton iteration method. By means of the method, fast calculation of the state deviation of the boosting segment of any flight trajectory can be achieved, the calculation accuracy can meet the requirement for trajectory calculation, the calculation method is far superior to that of an existing method, and a foundation is laid for achieving fast mobile lunching of the trajectory.
Owner:NAT UNIV OF DEFENSE TECH

Mixed vapour condensation intensify heat transmission method

There is a sort of heat transfer method of condensation aggrandizement type which mixes the steam, and it belongs to the area of aggrandizement heat transfer and energy-saving technique. It relates concretely to the modified character or the dispose course, and it applies to the set which has incondensable gas or the condensation-heat exchange set which mixes the steam in order to realize the aggrandizement of the condensation-heat exchange character. By changing the flowing form of the condensation liquid and the reciprocity between the dynamic and the boundary layer of the gas phase it makes the condensate which is in the groovy reliable membranous flow method to shell in the form of big dripping, the dripping can slide in the surface or shell along the boundary layer of the gas phase, it decreases the thermal resistance of the film of the condensate, at the same time for the intrusive action of the shell of the dripping, it is propitious to decrease the boundary layer of the heat transfer and the matter transfer, and it consolidates the whole heat transfer character of condensation aggrandizement type which mixes the steam. This invention can be used in the condenser which mixes the industrial material or has the incondensable gas. Its effect and benefit is that: in this instance that not using any additive power consumption, it only use the autologous gravitational effect of the condensate, and it makes the mixed steam heat transfer character of the mixed steam to obtain obvious melioration.
Owner:DALIAN UNIV OF TECH

Test equipment for simulating collapse of rock mass

The invention belongs to the field of rock mass dynamics indoor tests, and particularly relates to test equipment for simulating collapse of rock mass. The test equipment aims to bring convenience formeasuring the collapse failure critical slope gradient of the rock mass or further measuring the horizontal movement distances of the rock mass with different degrees of roughness. The test equipmentcomprises a rock mass collapse simulation device, a slope gradient adjustment device and a rock mass collapse monitoring device. The rock mass collapse simulation device at least comprises a slope surface roughness simulation plate, and the rock mass can slide on the slope surface roughness simulation plate after collapsing; the slope gradient adjustment device is used for adjusting the slope gradient alpha of the slope surface roughness simulation plate relative to horizontal planes; the rock mass collapse monitoring device is at least used for measuring values of the slope gradient alpha when the rock mass starts to slide along the slope surface roughness simulation plate under the gravitational effects. The test equipment has the advantages that the collapse failure critical slope gradient of the rock mass can be conveniently measured by the test equipment; the test equipment in certain examples further can be provided with different types of slope surface roughness simulation plates, accordingly, collapse procedures of the rock mass R with the different degrees of roughness can be simulated, and relations between the horizontal movement distances of the rock mass R and the roughness of slopes can be obtained.
Owner:INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI

Deepwater mining annular pipeline lifting and conveying device

The invention discloses a deepwater mining annular pipeline lifting and conveying device. A main supporting pipe is integrally formed by fixing at least two segments of supporting pipes through connecting pieces. A buoyancy air cabin with an electric hydraulic pump station, a buoyancy air cabin and a middle boost pump are arranged in the supporting pipes and an electric power control cable is arranged in a cable groove in the outer sides of the supporting pipes. The upper end and the lower end of the main supporting pipe are connected with a mining vessel lifting device and a traction steel wire rope respectively. A lifting and conveying pipe is an annular spiral pipeline which is fixed on the supporting pipes in a surrounding mode. The upper end and the lower end of the lifting and conveying pipe are connected with an ore sand output pump and a flexible conveying pipe respectively. The lifting and conveying pipe performs lifting and conveying in a spiral mode, the gravitational effect due to mineral substance free fall in the pipeline is avoided, and therefore the lifting and conveying distance is longer. Due to the fact that the electric hydraulic pump station is arranged in the buoyancy air cabin in the supporting pipes, the underwater weight of the whole device is reduced, in addition, working power is provided for the middle boost pump and an all-direction propeller, and the deepwater mining annular pipeline lifting and conveying device is safer and more reliable in use. Deepwater is led in through the all-direction propeller and a diversion hole to generate reacting force to prevent the supporting pipes from being twisted and deformed.
Owner:裘尧云

Concealed tunnel base plate water draining treatment method and structure thereof

A concealed tunnel base plate water draining treatment method comprises the steps that a water collecting pit is formed in the lower portion of a preliminary supporting concrete layer of a tunnel, and seepage water at a preliminary supporting bottom is drained to the water collecting pit; a baffle located at the upper portion of the water collecting pit and provided with a through hole is laid on the surface of the preliminary supporting concrete layer; a steel pipe penetrating through the through hole is arranged, one end of the steel pipe extends into the water collecting pit, and the other end of the steel pipe is connected with a self-priming pump for water pumping; after concealed tunnel construction is completed, the self-priming pump is removed, the steel pipe is grouted to seal the hole of the steel pipe, the water collecting pit can collect seepage water and underground accumulated water at the preliminary supporting bottom, a negative pressure is produced at a steel pipe port extending into the water collecting pit through the self-priming pump, the seepage water and the underground accumulated water flows out of the water collecting pit through the steel pipe, and the problem that a water body in the water collecting pit can be led out under the gravitational effect and accordingly water accumulation is caused is solved.
Owner:THE 5TH CONSTR COMPANY LTD OF CHINA RAILWAY 15TH BUREAU GRP

Sinking method and device for water well pipe

Provided is a sinking device for a water well pipe. The sinking device comprises a ratchet positioning device, a wheel shaft power mechanism, a guide pulley block, an operation platform and a steel wire rope. The operation platform is arranged right above a well hole and has an opening matching the well hole. A support is arranged on one side surface at one end of the operation platform. The wheel shaft power mechanism is arranged on the support. The ratchet positioning device is arranged on the wheel shaft power mechanism and positioned by means of the support. The sinking device for the water well pipe has following beneficial effects: due to the fact that the wheel shaft device is low in weight and gravitational effect and a lever principle are completely utilized, energy is saved and convenience and safety of construction are enhanced; due to application of the ratchet positioning device, the well pipe can be conveniently and stably positioned at any position so that safety, reliability and convenience are achieved; the wheel shaft power mechanism can easily draw the steel wire rope without mechanical coordinating operation such that construction flexibility is improved and construction cost is decreased; and the wheel shaft power mechanism is conveniently operated and helps to save manual power and decrease cost.
Owner:CHINA AEROSPACE CONSTR GROUP +1

Device for filtering cutting fluid of grinding lathe

The invention discloses a device for filtering a cutting fluid of a grinding lathe. The device comprises a hydraulic cylinder, a filtering device, a liquid storage tank and a pipeline, wherein the liquid storage tank is located under the filtering device; the liquid storage tank is used for storing the liquid filtered by the filtering device; the filtering device comprises a filtering component and a filtering cylinder; an opening is formed at the bottom of the filtering cylinder; the filtering component is arranged at the bottom of the filtering cylinder; a free end of a piston rod of the hydraulic cylinder is penetrated through the top of the filtering cylinder and is located in an inner chamber of the filtering cylinder; a piston is arranged at the free end of the piston rod; the size of a cross section of the piston is matched with the size of the cross section of the inner chamber of the filtering cylinder; the inner chamber of the filtering cylinder is divided into upper and lower filtering chambers under the sealed state by the piston. In the filtering device, the cutting fluid passes through a filter paper under a gravitational effect; the arranged hydraulic cylinder and piston can accelerate the filtering speed of the cutting fluid; the filtering time of the cutting fluid is shortened; the time cost is lowered.
Owner:成都欧珀琅精密工具有限公司

Enveloping-reversion type fruit transfer device and method

The invention discloses an enveloping-shifting type fruit transfer device and a method. The enveloping-shifting type fruit transfer device comprises a detection table and a discharge table, which are connected in an end-to-end stacked manner. The detection table is provided with rolls for conveying fruits. The discharge table is provided with fruit carriers for conveying fruits. In the fruit transfer section, discharge conveying chain sprockets and detection conveying chain sprockets are coaxial, the discharge conveying chain sprockets are externally meshed with discharge conveying chains, and fruit carriers envelope outside the rolls. The fruit carriers and the rolls convey fruits with respective chains from bottom to top in an arc form, and the fruit carriers constantly face the fruits between each two adjacent rolls. With increase of the arc conveying angle, position relation between the fruit carriers and the rolls is changed gradually till vertical reversion is complete, the fruits gradually leave the rolls and enter the fruit carriers under inertial and gravitational effects of the fruits so as to be transferred, transferring is stable, transferring phases are accurate, the rolls and the fruit carriers are in no relative motion during transferring, the fruits cannot be mechanically injured, and the enveloping-shifting type fruit transfer device and the method are widely applicable to classified transferring of torispherical fruits such as apples, oranges and the like.
Owner:JIANGSU UNIV

Segmented lifting and conveying device of deep-sea mining annular pipelines

The invention discloses a segmented lifting and conveying device of deep-sea mining annular pipelines. A main supporting pipe is formed by fixing at least two segments of supporting pipes through flanges. An electric hydraulic pump station, a buoyancy air cabin, a boost pump and a hopper are arranged in the main supporting pipe, and an electric power control cable is arranged in a cable groove outside the supporting pipes. The upper end and the lower end of the main supporting pipe are connected with a mining vessel lifting device and a traction steel wire. Conveying pipes are annular pipelines, the front conveying pipes and the rear conveying pipes are arranged on the supporting pipes in a surrounding mode, wherein the front conveying pipes and the rear conveying pipes are disconnected in a front-and-rear mode. The rear conveying pipe and the front conveying pipe of the uppermost segment of the supporting pipe and the lowermost segment of the supporting pipe are connected with an ore sand output pump and a flexible conveying pipe. The upper ends of the rear conveying pipes which are sequentially connected through the supporting pipes are connected with the upper end of the front conveying pipe of the front segment, and the lower ends of the rear conveying pipes are matched with the hopper. An inlet and an outlet of the boost pump are connected with the hopper and the rear conveying pipes. Due to segmented lifting and conveying, the mineral substance free fall gravitational effect is avoided. The lifting distance is longer, the hydraulic pump station reduces the weight of the device under the water and provides power for the boost pump and an all-direction propeller, the supporting pipes are prevented from being twisted and deformed, if blocking occurs, the boost pump reverses to dredge, and the segmented lifting and conveying device of the deep-sea mining annular pipelines is suitable for conveying large-particle mineral substances.
Owner:裘尧云
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