37results about How to "Change buoyancy" patented technology

The invention discloses a floater of solar water heater water-temperature water-level probe, wherein the floater is an open type hollow floater. The advantages of the invention are that: the solid or hollow floater is changed into the open type hollow floater by improving the structure of the floater, while in use, the enough flotation power of the floater is ensured and the inconsistent inside-outside pressure difference of the floater wall is improved, thus the service life of the floater is greatly prolonged and the open type floater can self regulate and self make up air, therefore the flotation of the floater can be kept for a long time.

The invention discloses a water brake gas circulation anti-flashover insulator high-voltage line connecting device which comprises an iron cap, a first umbrella skirt, a dust-proof and anti-flashoverzinc sleeve, a second umbrella skirt and a cotter pin. The iron cap is arranged on the upper surface of the first umbrella skirt and is connected with the first umbrella skirt by means of bonding. Thedust-proof and anti-flashover zinc sleeve is embedded in the bottom surface of the first umbrella skirt. The dust-proof and anti-flashover zinc sleeve is arranged on the second umbrella skirt and isconnected with the second umbrella skirt by means of welding. According to the invention, the amount of water in a water trap is slowly changed by slowing the memory rebound speed of a slow rebound pad; the buoyancy of a floating bag is changed, so that a blast tube is stretched or compressed; outside humid air is dried by a water absorbing and dehumidifying block; a pressure difference is formedthrough the branching of branch roads of a main road, so that dry air is ejected from the branch roads to produce a large impact force to clean dust accumulated under the second umbrella skirt; and aflashover accident caused by a conductive layer caused by the dissolving of damp dew, mist and a dirt layer is prevented.

A pipeline leakage detection device comprises a sealing shell, an elastic film is connected on the outer surface of an upper shell, and a first vent valve is arranged on the upper shell covered by theelastic film. A second vent valve is arranged on the elastic film, and a lower shell is equipped with a compressed air bag, a data acquisition module, a controller, a GPS signal transmitting-receiving module and a battery. A pipeline leakage detection system comprises the pipeline leakage detection device put in a pipeline, and an intermediate server and a terminal intelligent server which are arranged outside the pipeline. Based on the above device and the system, the present invention also relates to two different pipeline leakage detection methods. The beneficial effects of the present invention are that the pipeline leakage detection device is small and variable in size and simple in structure, is simple to use, and can go down and rise flexibly; the system is easy to deploy and monitor and is not easy to interfere, is high in detection efficiency and leakage detection positioning precision; the two leakage detection methods are simple to operate, and can detect the positions of all leakage ports rapidly.

The invention discloses an inflatable over-water lifesaving device and a lifesaving method. The lifesaving device comprises a floating body floating on the surface of water as well as an underwater propulsion mechanism, a laser radar and a controller which are arranged on the floating body; the propulsion mechanism is used for enabling the floating body to move; the laser radar is used for acquiring position information of to-be-saved person; the input end of the controller is connected with the laser radar; the output end of the controller is connected with the propulsion mechanism and a gasgenerator separately; and the controller drives the propulsion mechanism to operate and or triggers the gas generator to turn on according to the position information of the to-be-saved person. Through the inflatable over-water lifesaving device and the lifesaving method, which are provided by the invention, the condition that an unmanned boat cannot be close to man overboard under interference such as wave flow is responded, an inflatable over-water lifesaving device is controlled to arrive at the place near the to-be-saved person, and an airbag on the floating body is controlled to be expanded, so that the floating center of the floating body is changed and the man overboard who is in a coma or loses physical power can be salvaged automatically.

A submersible dredging vehicle relates to an underwater dredging technology. The submersible dredging vehicle is provided with a vehicle body, wherein a submersible sewage pump is arranged on the vehicle body, a drain pipe is arranged on a liquid outlet of the submersible sewage pump, four spiral propeller type driving wheels are arranged on the two sides of the vehicle body, spiral directions of the adjacent two driving wheels are opposite, a water retaining cover plate is arranged on the vehicle body, the vehicle body is provided with four driving motors connected with the four driving wheels and is further provided with a water storehouse and a draining pump, the draining pump is provided with a check pump, the water storehouse is provided with a water inlet pipe and a gas identification rod, an electric valve is arranged on the water inlet pipe, and the electric valve, the submersible sewage pump and the four driving motors are connected with a controller. The submersible dredging vehicle can move forwards and backwards, carry out translation, turn around by taking any one driving wheel as a circle center and by taking the center of the vehicle body as the circle center, move and the like through the turning matching of the four driving wheels. The submersible dredging vehicle disclosed by the invention has the advantages of high locomotive maneuverability, simplicity and convenience in position change, easy handling, no dead corner during working, more thorough cleaning, high dredging efficiency and strong subsidence and sliding capabilities.

The invention discloses a collection device for fine-grained silting deposits in modern lakes, which belongs to the technical field of deposit collection and comprises a suspension cabin, a collector is connected to the lower part of the suspension cabin, and a weight-increasing component is connected to the lower part of the collector. An anchoring system is connected to one side of the suspension cabin. By setting the suspension cabin, the position of the collector in the water can be adjusted, and by cooperating with the weight-increasing parts to ensure that the collector is balanced and upright in the water, preventing the mixing of coarse particles formed by underwater disturbance; by setting the collector and anchoring system, both It can make the collection frame have strong flexibility and anti-collision ability, and can also fix the position of the collection system, and monitor it in real time through GPS locator to ensure the singleness and stability of the source of sedimentation.

The invention relates to a robot mechanism, in particular to an underwater gliding snakelike robot. The underwater gliding snakelike robot comprises multiple modules. Each module comprises a self-expanding part and a rotation drive part, wherein the self-expansion part comprises an expansion shell, an elastic rubber sleeve, an expansion steering engine, a steering engine output shaft and connecting rod telescopic mechanisms, the expansion steering engine is arranged in the expansion shell, the steering engine output shaft is connected with the expansion steering engine, the connecting rod telescopic mechanisms are evenly distributed on the steering engine output shaft in the circumferential direction, the expansion shell is sleeved with the elastic rubber sleeve, the elastic rubber sleeve is connected with the expansion shell in a sealed mode, the expansion steering engine drives the elastic rubber sleeve to expand or contract through the connecting rod telescopic mechanisms, and therefore the size of the self-expanding part can be increased or decreased. By means of the robot, the long voyage and maneuverability of the underwater gliding snakelike robot are perfectly combined, underwater low-power gliding of the underwater gliding snakelike robot is achieved through the self-expanding part, and underwater flexibility and maneuverability of the robot are achieved through the snakelike structure.