31results about How to "Effective isolation protection" patented technology

The invention relates to an insulation protection net for a power transmission line, comprising a first insulating support pillar, a second insulating support pillar and a telescopic support; the first insulating support pillar and the second insulating support pillar have the same size and structure; the first insulating support pillar includes a base, The top of the base is provided with an accommodating cavity, and a telescopic tube is installed in the accommodating cavity, and the telescopic tube includes no less than two sleeves, and no less than two sleeves are socketed with each other; located at the top of the telescopic tube A connection plate is welded on the casing; the connection plate is provided with a mounting hole; the mounting hole is used to connect the telescopic support; the first insulating support strut is connected to one end of the telescopic support through the mounting hole; the second insulating support strut is passed through The mounting hole is connected with the other end of the telescopic bracket.

The invention discloses a safe guarding device for a power relaying protection field work and a use method thereof. The safe guarding device comprises a guarding device and an isolating device, wherein the guarding device is used for maintaining the work, and the isolating device is used for operating the work. The guarding device for maintaining the work comprises a secondary cable core guardingcap, a guarding cap, a terminal block guarding fence and a protection work voice prompter, which are used for protecting a cable core, a pressing plate and a terminal block. The isolating device for operating the work comprises a protecting screen safety isolating guardrail, a protecting device isolating cover, a protecting pressing plate isolating cover, a terminal block isolating cover, a secondary security isolating cover, a CT externally attached terminal isolating cover, a security temporary storage box, a working signboard and an operation handle isolating cover, which are used for isolating and protecting equipment. Each guarding device is adhered with a marking note corresponding to the work state. The safe guarding device has the advantages of fixation, reliability, obvious mark,simple operation, norm and cleanness, and no influence to operation of the equipment by a magnetic field of a magnet, and is suitable for isolating and protecting various kinds of relay protection equipment and devices.

The invention relates to a high-temperature resistant coating which comprises the following components according to weight percentage: 45-70 of quartz powder, 20-45 of water glass, 4-6 of water-soluble resin and 4-8 of water. A preparation method of the high-temperature resistant coating comprises the steps: directly putting all the components together and evenly stirring the same to prepare the product. The high-temperature resistant coating has simple production process, low production cost and strong maneuverability. After the high-temperature resistant coating is coated on surfaces of a steel billet and a metal part, the surfaces of the steel billet and the metal part and heating burner gas can be effectively isolated and protected, thereby the fire consumption of metal in the heatingprocess is reduced, and the metal yield rate is improved.

The invention discloses a preparation method of concrete repairing mortar. The preparation method comprises the following steps: (1) adding citric acid into corn stalk powder, performing acidification, performing washing by using distilled water to neutrality, and performing drying to obtain acidified stalk powder; (2) mixing strain cells, a urea solution, a calcium acetate solution and a sodium alginate solution according to a certain weight ratio, performing stirring, allowing the stirred material to stand, adding the product into the acidified stalk powder obtained in the step (1), performing uniform mixing, and allowing the mixed material to stand to obtain a repairing liquid; and (3) mixing the repairing liquid obtained in the step (2), autoclaved quartz sand (particle size of 0.5-1.0mm) and water to form the mortar. According to the preparation method provided by the invention, the repairing mortar prepared by the method can be applied to internal structural repair of concrete,has strong bonding performance, is not easy to fall off, and has a stable repair effect, and wide applicability.

The invention provides an adsorptive, flame-resistant and biodegradable temporary protective coating, which comprises the following components in percentage by mass: 80.0 to 55.0 percent of deionized water, 15.0 to 25.0 percent of propanetriol, 0.5 to 2.0 percent of xanthan gum, 0 to 1.0 percent of sodium carboxymethylcellulose, 3.4 to 12 percent of dihydric alcohol or trihydric alcohol condensation compound, 1.0 to 4.5 percent of triacetic acid glyceride, and 0.1 to 0.5 percent of conserving agent. The temporary protective coating has the advantages that: the temporary protective coating canbe used through spray coating or brush coating, and conglutinates dust and over-sprayed paint particles floating in the air mainly through the combined action of the characteristics of isolation, adsorption and flame retardance so as to fulfill the aim of further purifying the air; the temporary protective coating can effectively prevent spraying lacquer mist from influencing the coating quality in the coating process, and can effectively improve the fireproof performance of a coating workshop; the temporary protective coating can be cleaned away by water washing to save labors; the temporaryprotective coating is dissolvable in water and is biodegradable; and the temporary protective coating can have an effective isolating protective effect on walls of the coating workshop, devices, pipelines and the like, and prolong the service life of the devices.

The invention discloses compound nano micelles simultaneously loaded with anthracycline antitumor antibiotics and salvianolic acid A, and a preparation method and an application thereof. The compoundmicelles contain a therapeutically effective amount of anthracycline antitumor antibiotics, salvianolic acid A and an amphiphilic high-molecular polymer; through combined action of electrostatic attraction between an alkaline group of the anthracycline antitumor antibiotics and an acidic group of salvianolic acid A and self-assembly of the amphiphilic high-molecular polymer in an aqueous medium, the two drugs are jointly stably wrapped in nano micelles by a simple physical encapsulation mode; the obtained compound micelles have uniform particle size, have the encapsulation rate of 95% or more,and has both the drug loading amount and the stability obviously better than those of single-drug micelles.

The invention discloses a protective isolation switch, which comprises a shell, a contact base with head and tail engagement, an aviation connector, some wires, and protective isolation plates arranged on contact base. This invention solves the problems during using switch, such as electric arc, spark, damage to whole switch, and other hidden danger on security.

The invention provides a transportation device for horizontal steel coils: it includes a bottom plate and symmetrically arranged left and right brackets arranged on the bottom plate. The corresponding surfaces of the left and right brackets are supporting slopes respectively. 1. The support slopes of the right bracket together form a V-shaped support space for supporting the recumbent steel coil. Grooves are respectively arranged on the support slopes of the left and right brackets, and the grooves are arranged along the axis when the steel coil is placed. Arranged in the direction, a transverse positioning stopper composition is provided in the groove. The transverse positioning stopper composition includes a rotating shaft and several blocks arranged on the rotating shaft and arranged axially along the rotating shaft. The rotating shaft is arranged in the groove Inside and connected with the left and right brackets, the stoppers are respectively hinged on the rotating shaft through corresponding torsion springs. The invention makes the recumbent steel coil play a good limit function in its lateral direction after being loaded, and effectively prevents the lateral movement of the steel coil when the transport vehicle crosses a curve, thereby solving the hidden safety hazard in the steel coil transportation process.

The invention relates to the technical field of solar power generation pavements, in particular to a construction technology for solar power generation pavement electric power groove backfilling and compaction. The technology comprises the following steps of blowing and drying an electric power groove; paving a photovoltaic pavement protection template; coating the electric power groove with an adhesive layer oil; mixing and transporting electric power groove filler; layered filling and inserting and smashing the electric power groove; covering and rolling the electric power groove; performingwaterproof treatment on an electric power groove joint; and maintaining the electric power groove. According to the construction technology, the damages caused by the solar pavement in the process ofbackfilling and compacting the electric power groove can be avoided; and the construction process has the characteristics of being simple in process, strong in operability, rapid and efficient in construction, low in construction cost and good in construction quality, and is remarkable in beneficial effect and suitable for application and popularization.

The invention discloses a high-voltage isolation and discharge circuit, including: a logic conversion circuit, a high-voltage isolation circuit and a discharge circuit; wherein: the logic conversion circuit is used to output a corresponding logic control signal to the high-voltage circuit according to the channel control signal received. The isolation circuit; the high-voltage isolation circuit is used for disconnecting or conducting according to the logic control signal; the discharge circuit is used for disconnecting or conducting according to the received discharge control signal. The high-voltage isolation and discharge circuit disclosed by the invention can meet the requirements of high-voltage isolation and energy discharge, has a simple structure, and has high isolation and stability.

The invention discloses a construction method for an integrated underwater cap flexible water-stop structure. The water-stop structure includes a pile foundation casing and a prefabricated cap casing. The prefabricated cap casing is set on the pile foundation casing. The top of the bottom plate is welded with a shear key through the embedded parts, and the bottom of the bottom plate is embedded with a capsule tray. The capsule tray is ring-shaped and arranged around the pile foundation casing. A ring-shaped groove is formed under the prefabricated platform cover box, and a water-tight capsule is arranged in the ring-shaped groove. The water-tight capsule is in the shape of a ring. Pressurized gas or pressurized liquid, the inner and outer ring surfaces of the capsule are respectively attached to the outer wall of the pile foundation casing and the inner wall of the capsule tray, and form a vertical water-tight sealing belt. The invention has the advantages of simple structure and convenient installation. Through the setting of the capsule tray, the direct contact between the water-stop capsule and the concrete surface is avoided, and the water-free construction operation environment of the underwater cap is effectively ensured.