78results about How to "With safety protection" patented technology

The invention discloses a static synchronous compensator device of a three-phase three-bridge-arm power distribution network and a control method. The static synchronous compensator device is specially composed of a pre-charging circuit, a control module, a power module, a protection module and a human-computer interaction interface. The static synchronous compensator device has the advantages that the problem of impact current produced by high-voltage network-hanging start and voltage rise and fall of the device is solved by utilizing forward characteristics of the pre-charging circuit and an inverse proportional function; the device has a friendly human-computer interaction interface, the selectable reactive compensation mode and operation information display of the device can be achieved, and the device is more humanized and intelligentized; 3, the idle handling capacity can be ensured according to a power distribution network voltage environment; 4, a traditional lowpass filtering method is replaced by adopting a movable pointer average filter method and a novel approach smoothing crest method, the operating efficiency of an algorithm routine is improved, and the problem of reactive current detection delaying is eliminated. The cost of the device is reduced, the technical contents of the reactive compensation device are enriched, and the device has a certain reference value on engineering application.

The invention discloses a piece of fragrance underwear, which comprises a breast supporter, an inner liner, a lacing belt, shoulder straps and fragrance bags in independent arrangement, wherein the inner liner is arranged at the inner surface of the breast supporter; an interlayer space is formed between the inner liner and the breast supporter; the fragrance bags are arranged in the interlayer space; the lacing belt is connected with the two sides of the breast supporter; one end of each shoulder strap is connected with the upper end of the breast supporter; the other end of each shoulder strap is connected with the upper end of the lacing belt. By using the mode, the fragrance underwear has the advantages that the structure is novel; the breasts are protected; the independent fragrance bags are arranged in the fragrance underwear; the fragrance is pleasant; the body and the mind are relieved; safety, protection, convenience and practicability are realized, and the like. Wide market prospects are realized in fragrance underwear popularization.

The invention discloses a safely foldable automatically expanding / collecting umbrella, which comprises a telescopic umbrella middle rod, an expandable umbrella rib device and a ratchet and pawl device, wherein the ratchet and pawl device is arranged in the umbrella head. The spindle of a ratchet is provided with a rope; the ratchet is connected with a clockwork spring; the clockwork spring is tightened when the ratchet rotates counterclockwise, and the ratchet rotates clockwise when the clockwork spring is loosened; and a ratchet spring which is used for driving a pawl to match with the ratchet is arranged in the umbrella head. When the middle rod is pressed in an umbrella closing process, under the braking action of the pawl, the ratchet only can rotate clockwise; and under the action ofthe clockwork spring, the ratchet rotates clockwise to collect the rope, wherein if the middle rod is incautiously released in the clockwise rotation of the ratchet, the rope is tightened but the ratchet cannot rotate counterclockwise, so the rope can fix the middle rod to prevent the middle rod from being sprung off. Therefore, the safely foldable automatic expanding / collecting umbrella has the effect of safety protection.

The invention discloses a drug rehabilitation operation control device which comprises a backrest and an operating table. A television screen is embedded in the backrest. The operating table comprises a table board and a drawer. Two observation windows with a plurality of small smell emitting holes are arranged in the table board. The drawer is arranged at the bottom of the table board and provided with a containing space and an operating panel. A main rotating gear, a left rotating fluted disc and a right rotating fluted disc are arranged in the containing space. The main rotating gear is driven by a motor and meshed with the right rotating fluted disc. The right rotating fluted disc is meshed with the left rotating fluted disc. The left rotating fluted disc and the right rotating fluted disc are each provided with a plurality of sequentially-connected containers containing objects capable of emitting smell, and the containers can correspond to the two observation windows respectively when the left and right rotating fluted discs are rotated. The drug rehabilitation operation control device is compact in structure and easy to operate, has the safety protection function, integrates videos, real objects and smell emitting, is applicable to comprehensive therapy of isolation drug rehabilitation center systematic desensitization therapy, and is applicable to teaching and scientific research of schools, chemical industries and scientific research units.

The invention discloses a method and system for testing the minimum bending radius of a full-size non-metallic pipe. The basic principle of the method is to repeatedly bend the test pipe back and forth, or fix the test pipe on a bending test platform, and apply a load to make it bend To a certain bending radius, and then through the hydrostatic pressure and burst test system to test the pressure bearing performance of the non-metallic pipe after the bending state is adjusted or under a certain bending radius state, and the non-metallic pipe is evaluated by the hydrostatic performance and short-term failure pressure value The minimum storage bend radius and the minimum working bend radius of the tubing.

The invention discloses a wind and sand preventing method through an adjustable fence, and relates to a wind and sand preventing method through a fence which is perspective and has the functions of safety protection, wind preventing and sand and dust preventing simultaneously. The defect that in the prior art, fully-circulating air cannot be obtained through a totally-closed type fence is overcome, and the defects that in the prior art, an open-type fence cannot effectively control the magnitude of force of wind penetrating through the fence, and cannot effectively protect sand and dust are overcome. The magnitude of stress through which a hanging curtain is blown up by the wind is adjusted through magnetic field attraction force between a reset magnet at the bottom of the hanging curtainand fixed magnets on the fence, the movement range of the hanging curtain is adjusted through a clamping rod which can move up and down, the magnitude of the force of the wind passing through the fence is further controlled effectively, the perspective property of the fence is achieved, meanwhile, the purposes of safety protection and effective control over wind preventing and sand and dust preventing are achieved, and the technical effect in the aspect of fence wind penetrating volume adjustment is particularly prominent.

The invention discloses a wind and sand prevention method adopting an electromagnetic-type reinforced on-wall fence with a gauze mesh, and relates to a wind and sand prevention method adopting a fencewhich is perspective and simultaneously has the functions of safe protection and wind and sand-dust prevention. The defects that in the prior art, as for a full-closed fence, full-circulating of aircannot be achieved, and as for a perspective fence, the magnitude of wind power passing through the fence cannot be effectively controlled, and wind and sand-dust cannot be prevented are overcome. Themagnitude of force of wind blowing up a hanging curtain is adjusted through attraction force of a magnetic field between a reset magnet at the bottom of the hanging curtain and a fixed magnet on thefence, the motion range of the hanging curtain is adjusted through a clamping rod capable of moving up and down, the magnitude of the force of the wind passing through the fence is further controlledeffectively, and thus the purposes that the fence is perspective, the space above a reinforcing transom and the space below the reinforcing transom can be controlled independently, the magnitude of the force of the wind in spaces with the different heights can be controlled, meanwhile, safe protection is achieved, and wind and sand-dust prevention are effectively controlled are achieved, and the technical effect in the aspect of adjusting of the ventilation amount of the fence is particularly prominent.