7results about How to "Normal circulation" patented technology

The utility model discloses a kind of lightweight double-sided circuit boards, it is related to double-sided circuit board technical field, including first circuit board and second circuit board, fixedly connected with partition plate between first circuit board and second circuit board, four corners of the upper surface of partition plate are all fixedly installed with first locating block, first locating block is located four corners of first circuit board, the lower surface of partition plate is fixedly installed with vertical plate, vertical plate is fixedly connected with second circuit board, the utility model is distinguished first circuit board and second circuit board by setting partition plate, the upper surface of first circuit board is provided with first locating block to determine the position of first circuit board, lower surface is provided with vertical plate to determine the position of second circuit board, the overall state of being hollow can speed up the discharge rate of heat, and entire structure is compared to traditional whole plate body, with smaller volume and lighter quality effect, more lightweight.

The present disclosure relates to a motor cooling structure, a motor and a vehicle, the motor cooling structure comprising: a stator core, a plurality of through holes being formed in the stator core and extending along the axial direction of the stator core, the plurality of through holes being distributed along the circumferential direction of the stator core; and a shell being sealingly arranged at both ends of the stator core, the shell being provided with a cavity, the cavity being in communication with the plurality of through holes to form a cooling channel, the cooling channel being provided with an inlet and an outlet. The present disclosure forms the cooling channel by forming the through holes in the stator core and the shells at both ends of the stator core, and the cooling liquid enters from the inlet and is discharged from the outlet to form a circulation, which is assisted by the structure of the stator core and the shell to form a complete cooling structure. After the cooling channel is filled with the cooling liquid, only a fixed flow of the cooling liquid is needed to ensure that the cooling system can circulate normally, and the heat dissipation effect of the motor system will not change, which is simple, easy to use and cost-saving.

The application discloses a buried pipeline dredging device, which comprises a crushing structure, one side of the crushing structure is provided with a driving source structure, a first driving structure is fixedly installed on the side, away from the crushing structure, of the driving source structure, and a guide structure is fixedly connected to the side, away from the driving source structure, of the first driving structure. The buried pipeline dredging device is characterized in that a driving motor drives a rotating plate to rotate through a worm gear transmission part, and then drives a drill bit to rotate; the drill bit can crush obstacles in the pipeline while rotating, so that the obstacles cannot affect the normal conveying of the pipeline; meanwhile, the annular plate drives the grinding block to rotate while rotating; the friction end surface of the grinding block is in contact with the inner wall of the pipeline, so that the grinding block can rub against the inside of the pipeline, thereby further grinding and removing the objects adhered to the inner wall of the pipeline, and the cleaning effect of the obstacles in the pipeline is improved.

The utility model relates to exhaust cylinder cooling device technical field, and disclose an exhaust cylinder cooling device for steam turbine, including cylinder, the inner chamber of cylinder is installed with cooling pipe, the outer wall fixed assembly of cooling pipe has monitoring box, the top of monitoring box is installed with water outlet pipe, the inner chamber rotationally connected of monitoring box has the shaft, the outer wall fixed assembly of shaft has the impeller. This exhaust cylinder cooling device for steam turbine, through being provided with the monitoring box, and setting up the shaft and the impeller in the inner chamber of monitoring box, under the impact of water flow, make the impeller rotate, once the cooling pipe appears the block, will result in the water flow velocity slows down, thereby causing the rotating speed of impeller to slow down, at this moment the number of electric signal produced by trigger rod in a certain time reduces, and under the action of controller discovers in time, thereby can judge the water flow velocity of cooling pipe slows down, avoid traditional equipment not to have the monitoring of cooling water velocity.

The invention discloses a while-drilling leaking stoppage tool and a using method. The while-drilling leaking stoppage tool comprises an upper connector and a lower connector which are in threaded connection, a leaking stoppage hole is formed in the outer wall of the upper connector, a sliding sleeve ball seat is installed in the upper connector, a spring is installed in the lower connector, the spring makes contact with the sliding sleeve ball seat, and a pressure relief hole is formed in the outer wall of the lower connector. The plugging agent can be applied to plugging of formation fracture leakage in the drilling process of sidetrack drilling of a vertical well, a directional well, a horizontal well and an old well, drilling fluid is prevented from continuously leaking to formation fractures, the drilling fluid can normally circulate, and normal drilling is achieved; the operation process is simple, the plugging agent can smoothly flow to the annulus of the leakage position from the interior of the drill rod, the plugging effect is good, and the well drilling plugging period is shortened.

The utility model provides a covered stent which is of a tubular structure with two open ends and comprises a main stent body, and a surface covering film is arranged on the surface of the main stent body. The main body stent comprises a plurality of supporting skeletons, the supporting skeletons are arranged at intervals in the axial direction of the covered stent, and every two adjacent supporting skeletons are connected through a surface covering film; the covered stent further comprises a bare stent, the near-end side of the main stent comprises a connecting stent, the bare stent is connected with the connecting stent through a connecting rod, and due to the arrangement of the bare stent, it can be ensured that in a straight-pipe-section blood vessel at the bifurcation opening position of the bifurcated blood vessel, when the two stents are matched in parallel, closed residual cavities are avoided, blood can normally circulate, and further, the blood can be prevented from being blocked. When the bare stents are pressed in the radial direction, at least one side in the circumferential direction can deform, and after deformation, the two bare stents can form two semicircular bare stents, so that the two semicircular bare stents are attached to the tube wall of a straight tube section blood vessel to form a complete circular structure, and the radial supporting force of the position is enhanced while a closed residual cavity is prevented from being formed.

This invention discloses an automatic putty spraying switch mechanism, belonging to the field of construction robot technology. One end of the feed pipe is nested in the side of the connecting rod support, and the other end of the feed pipe is fitted with a sealing plug. An inner hole is formed at the center of the sealing plug. A ejector pin is embedded in the end of the feed pipe away from the sealing plug. A reset sleeve is nested at the front end of the ejector pin, and a sleeve pre-tightening component is nested and fixed at the front end of the reset sleeve. The reset sleeve is clamped and fixed to the surface of the ejector pin by the sleeve pre-tightening component. The rear end of the reset sleeve is embedded in the end of the switch actuation linkage. A sealing nut is provided on the other side of the switch actuation linkage. A drive linkage is rotatably connected to the other end of the switch actuation linkage, and a motor flange is rotatably connected to the other end of the drive linkage. The motor flange is driven to rotate by a servo motor. This product is used to replace conventional putty nozzles. By adjusting the motor rotation angle, the spray volume can be freely controlled, and instantaneous opening and closing of putty spraying with a duration of less than one second can be achieved.