32results about How to "Reasonable depth" patented technology

The invention provides an energy storage system-thermal power generating unit combined frequency modulation control method considering frequency modulation performance assessment. The method comprisesthe steps: firstly, obtaining the basic state of a combined frequency modulation unit at a certain moment in a current frequency modulation period; dividing and determining the working period of thecombined frequency modulation unit according to the index calculation rule of the frequency modulation unit participating in the frequency modulation auxiliary service; for different working periods of the combined frequency modulation unit, respectively obtaining control target active power of each working period, and obtaining target active power of the energy storage system by matching with theactive power of the thermal power generating unit; and correcting the target active power of the energy storage system by comprehensively considering the power limit and the capacity limit of the energy storage system to obtain a final active power of the energy storage system. According to the method, aiming at the control strategy of the energy storage system in the working condition that the energy storage system-thermal power generating unit jointly participate in frequency modulation auxiliary service, the action opportunity and the action depth of the energy storage system are reasonably controlled by taking the frequency modulation assessment index of the frequency modulation unit as guidance, and thus the effect of the energy storage system is effectively exerted.

The invention discloses a portable type rural-power-grid circuit sag adjustment device. The portable type rural-power-grid circuit sag adjustment device comprises a supporting rack. A winding drum is installed on the supporting rack, a rope is wound around the winding drum, a ratchet mechanism is installed at one end of the winding drum, the ratchet mechanism and the winding drum coaxially rotate, a large gear is installed at the other end of the winding drum, and the large gear and the winding drum coaxially rotate. A rope winding shaft is installed on the supporting rack, a small gear is installed next to the rope winding shaft, the small gear and the rope winding shaft coaxially rotate, the small gear is meshed with the large gear, a transmission mechanism is formed by the small gear and the large gear, a crank is fixedly installed on the small gear, and a fixed pulley used for guiding is installed on the supporting rack. The portable type rural-power-grid circuit sag adjustment device has the advantages that operation is easy, the dead load is light, the loading capacity is large, the sag adjustment accuracy is high, the construction intensity of workers is reduced, and the construction safety is guaranteed.

The invention provides a preparation method of a carbon fiber composite pre-oxidized filament preform. The method comprises the following steps: 1) weaving weft-free unidirectional carbon fiber clothby using 12K carbon fibers through a braiding machine; 2) performing shearing on PAN pre-oxidized fiber filaments, spraying water, performing heating, and performing opening to prepare a net; and 3) flatly spreading the carbon fiber cloth, using the carbon fiber cloth combining with the net as interlayer filling, performing stacking layer by layer, and performing needle punching layer by layer toobtain the three-dimensional overall structural preform. According to the preparation method provided by the invention, the preform produced by the method has a compact structure and is not easy to layer, uniformity and permeability of surface pores of the preform are excellent, so that the subsequent densification period is greatly shortened; and the method has a simple production process and lowproduction costs.

The cutting blades and smoothing blades of a road maintenance vehicle are adjustable in position with respect to the wheels to avoid extremes in changes in the depth of a cut by a blade or the height of the blades caused by wheels of the vehicle dropping into low places in a road. By including a selected number of wheels mounted to the same stiff frame, the wheels riding on the highest part of the road will lift the rigid frame and other wheels rather than the wheels riding on the lowest part of the road determining the depth of the cut of the cutting blades. The height of the blades with respect to the wheels can then be adjusted so that they never cut too deep and overly stress the blades but do cut the highest elevations of the road and move the loose dirt and gravel into the lower parts of the road. A first frame is supported by wheels and a second frame is movably mounted to the first frame.

The insulator includes arc proof insulator, punctured anchor clamp, insulated conductor, and insulated flexible conductor. The arc proof insulator is utilized to position path of lightning flash over and fix cauterization point of power frequency electric arc. The punctured anchor clamp penetrating insulation layer of insulated conductor is contacts to conductor inside tightly. The insulated flexible conductor connects arc proof insulator with punctured anchor clamp electrically. Thus, when thunder and lightning takes place, discharging happens through arc proof insulator. The invention features no wire to be peeled off, preventing broken wire caused by lightning strike, high safety, easy to implement.

The invention provides an Eucryptorrhynchus chinenis ground capture device and method; the device comprises a mesh covering the basal part of an ailanthus tree, and male and female sticking buckles tightly attached to the basal part of the trunk; the four edges of the mesh are respectively wrapped by 100-mesh nylon gauze; a middle point connecting line of two parallel edges of the mesh is provided with an opening; two sides of the opening are respectively wrapped by 100-mesh nylon gauze; the male and female sticking buckles are respectively sewed on the 100-mesh nylon gauze of the two edges of the opening after being wrapped. The device is simple in making technology, convenient in operation, low in cost, ling in life, cannot affect normal growth of the ailanthus tree, and cannot pollute environment; Eucryptorrhynchus chinenis overwintering imago and eclosion imago will unearth and climb tree so as to damage ailanthus tree branches; the device and method can keep capturing Eucryptorrhynchus chinenis overwintering imago and eclosion imago in long time, so the Eucryptorrhynchus chinenis overwintering imago and eclosion imago cannot harm the tree and mate and lay eggs; the device and method have good capturing effect for underground pests like Chinese mole cricket, chafer imago and larva.

A lighting device for a motor vehicle is provided, for example a head lamp or a tail lamp. The lighting device includes an array of light sources, a lens assembly having a collimator lens, an inner lens, and an outer lens, and a housing to maintain the lens assembly in fixed relation relative to the array of light sources. The collimator lens includes a central geometry to manage high intensity light from directly above the LEDs and a lateral geometry to manage low intensity light that is offset from the LEDs, such that the light output from the LEDs exits the lens assembly with a homogeneous light distribution. The lighting device is suitable for vehicle applications, including internal lighting applications and external vehicle lighting applications. The lighting device can be manufactured by extrusion, making it well suited for low cost applications, such as interior ambient lighting.

The invention discloses a wood door processing device, which comprises a base, a stud and a parting tool, wherein the parting tool and the stud are in threaded connection, the base is disc-shaped, the stud is positioned at the right center of the base and is fixedly connected with the base, a plurality of clamping seats are evenly distributed on the base, each clamping seat consists of a baffle plate and two side plates which form a U-shaped clamping seat for containing a wood door, a sleeve with an internal thread is arranged at the U-shaped opening of the clamping seat on the base, a threaded rod is arranged in the sleeve and consists of a thread part and a blocking part which are sequentially arranged from left to right, and a rotating handle is arranged at the blocking part; the parting tool consists of a blade and a handle which are in threaded connection, a plurality of longitudinally arranged thread holes are formed in the blade, a nut matched with the stud is arranged on the blade and is fixedly connected with the blade, and an included angle between the edge of the blade and the horizontal plane is 2 degrees.

The present invention provides an arc-tight puncture hardware fitting for preventing an overhead insulation wire from being damaged by lighting strike. The present invention includes an insulation layer for piercing the insulation wire, a piercing wire clip electrically contacting close to a conductor inside, a ground arc electrode electrically connected with the ground terminal of a line insulator, an arc-tight electrode electrically connected with the piercing wire clip, and an insulation cover without being sealed along the bottom. The present invention is characterized in that the arc-tight electrode electrically connected with the piercing wire clip adopts a two-way arc-tight electrode and is connected with the two sides of the piercing wire clip. Due to the two-way arc-tight electrode, the present invention alters defect of the original technology that the arc-tight puncture hardware fitting should be arranged on the load side in one-way use and on both sides of the insulator in two-way use. The present invention optimizes the shaped of the two-way arc-tight electrode into a dovetail structure or a vertical structure so as to make the operation of the arc-tight puncture hardware fitting safer, the installation more convenient and the use more economical under the two-way power supply mode. The arc-tight puncture hardware fitting provided with the present invention is convenient and quick to install, thus meeting the operational needs in the construction site.

The invention relates to a tray, in particular to a cup position fixable tray and belongs to the technical field of tray design. The cup position fixable tray comprises a tray and is characterized in that the tray is provided with a plurality of raised limiting rings, and a cup limiting cell for receiving a tea cup is formed in each limiting ring. The limiting rings are arranged evenly on the tray. The limiting rings are 1-3 cm higher than the surface of the tray. The cup position fixable tray is simple and reasonable in structure, easy to produce and manufacture and convenient to use; the multiple raised limiting rings are arranged on the tray, cup limiting cells for receiving tea cups are formed in the limiting rings, tea cups are placed in the limiting cells during piratical use, and the cups can be fixed on the tray.

The invention discloses a method for centralized collection of carbon dioxide in electrolytic aluminum production. And preparation before electrolysis, flue gas pipe burying and carbon dioxide collection are carried out. According to the carbon dioxide centralized collection device in the electrolytic aluminum production, an insulating plate is fixedly installed below a cover plate, a gas collection flue is installed below the insulating plate, the gas collection flue is fixedly connected with the upper end of a flue gas pipe, the side face of the flue gas pipe is fixedly connected with the lower end of a discharging pipe, and the discharging pipe penetrates through the gas collection flue, the insulating plate, the cover plate and a crust breaking air cylinder to be connected with a crust breaking hammer rod. The crust breaking hammer rod penetrates through the gas collecting flue, the insulating plate and the cover plate to be inserted into the flue gas pipe. Carbon dioxide is prevented from being mixed with air, the concentration of the carbon dioxide is greatly improved, the industrial recycling concentration requirement is met, carbon dioxide emission is reduced, the situation that smoke is extracted to take away electrolysis heat is avoided, the heat preservation effect is good, the power of a smoke exhaust fan is greatly reduced, energy consumption is low, and the phenomena of hammer head long package and material blocking of a discharging hole are eliminated.