11results about How to "Reduced occupied volume" patented technology

The invention relates to an optimization method of S characteristics, in particular to an optimization method of S characteristics of a pump turbine. The invention aims to solve the problems of complex S characteristic optimization process and long consumed time in the prior art. During S characteristic optimization, an S characteristic curve of a turbine runner is obtained firstly, then N turbulent flow rods are installed in a vaneless area between a movable guide vane and the runner according to the sudden change of the S characteristic curve, and the turbulent flow rods are arranged on a reference circle with the diameter being Dr. When fluid flows through the turbulent flow rods, water flow at the inlet of the rotating wheel collides with the turbulent flow rods, wake flow formed by collision extrudes inlet backflow vortexes, the shapes of the inlet backflow vortexes are lengthened, the inlet backflow vortexes extend towards the center of the rotating wheel, the size occupied by the inlet backflow vortexes at the inlet of the rotating wheel is reduced, and the inlet backflow vortexes can be improved or restrained. And the flow capacity of the runner is improved, so that the S characteristic of the pump turbine is further improved. The invention belongs to the technical field of water turbine S characteristic optimization.

The present invention discloses a fault detection device for substation maintenance, comprising a box, the output end of the motor is fixedly connected to a rotating rod, the inner wall of the box is fixedly connected to a first cross bar, the first cross bar is penetrated by a first short bar rotatably connected thereto from top to bottom, the bottom of the first short bar is fixedly connected to a first bevel gear, a second bevel gear meshing with the first bevel gear is mounted on the rotating rod, the upper end of the first short bar is fixedly connected to a first screw rod, the outer sleeve of the first screw rod is provided with a first threaded barrel threadedly connected thereto, the upper end of the first threaded barrel penetrates the upper side wall of the box and is slidably connected thereto. The present invention can not only inspect and repair multiple insulators through a motor, but also realize the separation of the fault detection device when it rises and the gathering of it when it descends, which is convenient to carry when not in use, reduces the volume occupied, and can realize the movement of the box without manual pushing, making the detection safer. It is suitable for substations.

The invention belongs to the technical field of chemistry, and provides a steel cylinder special for electronic grade chemicals, which comprises a cylinder body and a protective cover, the protective cover is detachably connected with one end of the cylinder body where a valve is located, and a partition plate is fixedly mounted in the protective cover. The technical problem that in the prior art, a protective cover cannot solve the problem that pressure is increased when gas continuously leaks is solved. A first piston plate is pushed by air pressure to move downwards, an air inlet pipe is closed through a first permanent magnet and a third permanent magnet which are matched when the first piston plate moves downwards, at the moment, the first piston plate is pushed to move upwards when the air pressure in a protection cover is increased, and therefore pure nitrogen in an air cylinder is discharged into external storage equipment; and meanwhile, after the first piston plate moves to the upper end, the gas inlet pipe is opened again through a first permanent magnet and a third permanent magnet which are matched with each other, and pure nitrogen continuously leaked from the bottle body can be conveyed into external storage equipment by repeating the steps. The sealing device is widely applied to the operation scene that gas is exhausted from the sealing cavity.

The utility model relates to a knob assembly for cooking equipment. The utility model discloses a base (110) that drive shaft (71) passes through. The utility model has the knob main part (NB) that rotates with the above-mentioned drive shaft (71) as the center and moves linearly with the axial direction of the above-mentioned drive shaft (71). The knob main part (NB) has a locking button (140) with an operating part (143) exposed to the outside. At this time, the locking button (140) has a first position that is restricted from moving axially by the base (110) and a second position that can move axially. Therefore, the user can only press the locking button (140) first, then press the knob main part (NB) axially to make the cooking equipment work, so that the knob assembly can be prevented from being operated or malfunctioning by the locking button (140).

The invention relates to a modular element assembly which allows the formation of a stroller (2) or the achievement of a wheeled vehicle (3) suitable for being ridden by a child. The assembly comprises: a seat (5) / cart handle (6) subassembly, a floor (15) of the seat (5) being connected to the cart handle (6) while being movable relative to the cart handle (6) between an unfolded state and a folded state; and a wheeled vehicle (3) forming the chassis and wheels of the stroller (2) in a "stroller" configuration wherein the panel (15) is dimensioned such that in the deployed position the panel (15) rests on a grip handle (20) comprised by the vehicle (3) and in the folded state the panel (15) avoids a portion of the vehicle (3) for being ridden by a child.

The utility model relates to road surface drainage detection equipment which comprises a bottom plate, an annular groove is formed in the bottom plate, a feeding pipe is fixedly connected to the side wall of the annular groove, a plurality of through holes are formed in the bottom face of the annular groove, a cover plate is installed on the feeding pipe, a movable assembly is arranged in the annular groove, and a bottom groove is formed in the center of the bottom face of the bottom plate. An inner ring plate is movably connected into the bottom groove, and an outer ring plate is in threaded connection with the outer wall of the bottom plate. The sealing device has the beneficial effects that when the sealing operation of drainage detection is carried out on a road surface, a sealing material is filled into the annular groove and the push rods on the two sides are pressed at the same time, the push rods drive the push plate to move in the annular groove, and the sealing material is discharged from the through hole in the bottom surface of the bottom plate by utilizing the push plate; the sealing material is filled between the inner ring plate and the outer ring plate, sealing operation can be completed, compared with traditional manual operation, good convenience is achieved, and the overall detection efficiency can be effectively improved.

This application discloses a packaging structure and its formation method. The formation method includes: providing a semiconductor chip, the semiconductor chip including an active surface and a back surface opposite to each other; providing a microfluidic plate, the microfluidic plate including a first surface and a second surface opposite to each other, the microfluidic plate having microfluidic grooves, the microfluidic grooves penetrating a portion of the first surface; and bonding the first surface of the microfluidic plate to the back surface of the semiconductor chip. By bonding the first surface of the microfluidic plate to the back surface of the semiconductor chip, the first surface of the microfluidic plate and the back surface of the semiconductor chip are permanently bonded together through atomic and / or molecular interactions. This allows the microfluidic grooves to be directly located between the microfluidic plate and the semiconductor chip, significantly reducing the thermal resistance of the intermediate layer and ensuring that heat can be transferred more directly and efficiently from the semiconductor chip to the cooling medium in the microfluidic grooves, thereby improving heat dissipation efficiency.

The utility model provides a kind of two-in-one feeding and discharging equipment, including bidirectional conveying belt mechanism, feeding and discharging turnover mechanism and feeding and discharging carrying mechanism, wherein bidirectional conveying belt mechanism includes conveying pedestal and NG discharging belt assembly and OK feeding belt assembly installed on conveying pedestal, the conveying direction of NG discharging belt assembly and OK feeding belt assembly is parallel and opposite, bidirectional conveying belt mechanism is equipped with review end and material end;Feeding and discharging carrying mechanism includes movement module, adsorption component and the first grab component and the second grab component symmetrically arranged in the two sides of adsorption component, and the drive end of movement module is connected adsorption component, first grab component and second grab component;The two-in-one feeding and discharging equipment is integrated in bidirectional conveying belt mechanism by NG discharging belt assembly and OK feeding belt assembly, and cooperate with feeding and discharging carrying mechanism, complete the automatic feeding of NG product and the automatic feeding after review, and then improve the production efficiency of detection procedure.

The utility model discloses a current output device and photovoltaic folding board relates to solar energy equipment technical field, wherein, current output device is used for photovoltaic folding board, and photovoltaic folding board includes at least two pieces of foldable photovoltaic board, and the periphery of photovoltaic board has the protection frame. Current output device is located at the corner of photovoltaic board protection frame, and includes output casing, output assembly and magnetic piece. The output casing is wrapped protection frame corner, and has the installation space in. The output wire one end of output assembly is in the casing, and the other end is inserted into the installation space, and is electrically connected with photovoltaic board through the electric control board. The magnetic piece is located in the installation space, and is close to the side wall of casing away from photovoltaic board, and the other photovoltaic board protection frame also is equipped with magnetic piece in corresponding position. The technical scheme provided by the utility model can reduce the volume of current output device on photovoltaic folding board.

This utility model discloses a pet water fountain, relating to the technical field of pet drinking equipment. The pet water fountain includes a shell, a water storage tank, and a filter assembly. The shell includes a drinking groove formed on its upper surface, with an outlet and a return outlet within the groove. The water storage tank has a water storage space formed by a foldable tank wall and a bottom plate. Both the outlet and return outlet are connected to the water storage space. The shell is fitted around the outer periphery of the foldable tank wall, which has at least two annular creases for folding the shell towards the bottom plate. The filter assembly includes a filter box and an ultrafiltration filter element disposed within the filter box. In use, the filter box is installed on the lower surface of the shell and corresponds to the return outlet. The technical solution provided by this utility model offers a pet water fountain that is easy to carry and package, has a large water storage capacity, and can effectively filter water.

The utility model relates to the technical field of air conditioning, and provides fresh air equipment. The fresh air equipment comprises a shell, a heat exchange core and two draught fans. A heat exchange cavity and a fan cavity which are spread along a first plane are formed in the shell; the heat exchange core is located in the heat exchange cavity. The two draught fans are both located in the draught fan cavity, the axes of the two draught fans extend in the first direction, and the first direction is parallel to the first plane. According to the fresh air equipment, the axes of the two draught fans extend in the first direction, under the condition that the radial size of the draught fans is large, the size of the whole machine along the first plane cannot be excessively increased through the draught fans, the size occupied by the draught fans is reduced, the structural layout is more reasonable, the size of the whole machine is smaller, and the requirement for miniaturization is met.