38results about How to "Long maintenance time" patented technology

A cable protection device is designed to prevent a cable from being damaged by rubbing against a helicopter. A protection frame is installed-below a winch 11 connected to a helicopter. A supporting groove is formed on the protection frame, and a slide-contact body is rotatably fitted in the support groove. A part of the slide-contact body is exposed, and the cable hung down from the winch is brought into contact with the exposed portion. The slide contact body is divided into two or more parts, and it is formed by continuously aligning the divided slide-contact bodies of the cylindrical shape. Both ends of the divided slide-contact body are aligned by fitting the recession and the projection of the tapers of the ends of the adjacent divided slide-contact bodies to each other.

The invention discloses a stereoscopic maintenance tunnel for precast concrete members. The stereoscopic maintenance tunnel comprises a long-bar-shaped tunnel body surrounded by a base and a shell. A plurality of layers of tracks penetrating through the tunnel body are distributed at the two sides of the inside of the tunnel body. Heating equipment used for generating steam is arranged inside the tunnel body. Two end openings of the tunnel body are both provided with openable and closeable isolation gates allowing mold platens carried with the precast members to pass through. A closed steam curing chamber containing a plurality of layers of tracks is installed inside the tunnel body. The stereoscopic maintenance tunnel for the precast concrete members is reasonable in structural design, capable of achieving assembly-line-type maintenance, high in maintenance amount, capable of saving energy and high in efficiency.

The present invention relates to a remote wireless communication control system for submerged arc furnace reactive compensation. The system includes a remote wireless communication control machine and a submerged arc furnace reactive compensation device. The remote wireless communication control machine further includes a MS-RSCM302 security communication module integrated with a MS-3G network communication module, and a MS-NC2 serial port conversion module. The submerged arc furnace reactive compensation device includes a control cabinet and a capacitance automatic compensation cabinet. The control cabinet comprises a MS-RSCM302 security communication module, a MS-NC2 serial port conversion module, a DVPEH2 PLC controller, a programmable multi-function network instrument and a touch screen; while the capacitance automatic compensation cabinet comprises multiple compensation units. The present invention performs remote Internet communication and data collection via cable modem, wireless transmission and 3G, while remote monitoring and data reading on each site are realized through installation of customized software in the computers and smart phones, to further remotely manage the actual operation status of the submerged arc furnace reactive compensation device and to solve such maintenance burdens as tedious on-site maintenance and long maintenance time.

The invention belongs to the technical field of flower and tree plant cultivation, and particularly belongs to a novel root system inducing method adopted before potting of hydroponic flowers and trees. The method comprises the following steps that a, under the condition that the air temperature is not lower than 15 DEG C, field cultivation seedlings or hole pot seedlings or cuttage bars of indoor cultivated flowers and trees are selected and washed, and rotten roots and leaves are removed; b, seedling plants or the cuttage bars are soaked in a 1,000-1,5000-fold antibacterial agent solution for 15-30 seconds, the seedling plants or the cuttage bars are taken out to be aired, and then the roots of the seedling plants or the cuttage bars are soaked in clear water for 10-20 hours; c, compound inducer inducing is carried out, a water solution is prepared from 0.2-0.5 mg / L 6-benayl aminopurine, 0.1-0.2 mg / L naphthylacetic acid, 0.02 mg / L gibberellins and 0.3 mg / L kinetin for soaking the roots or stem basal parts or cuttage bar basal parts for 30-60 minutes, and the seedling plants or the cuttage bars are taken out to be aired; d, shading culture is carried out, root system differentiation is promoted, culture is carried out in a proper shading greenhouse, hydroponic roots can grow out generally within 5-15 days, and meanwhile absorption roots and aerial roots are differentiated out.

The invention discloses nutrient soil for indoor plants. The nutrient soil for the indoor plants is prepared from the following raw materials in parts by weight: 5-10 parts of plant ash, 6-12 parts of river sand, 4-6 parts of soybean dreg cakes, 10-17 parts of egg shell powder, 2-8 parts of earthworm cast, 12-16 parts of saw dust, 20-34 parts of peat soil and 4-7 parts of microalgae powder. The nutrient soil for the indoor plants has the characteristics that multiple mineral nutrients are contained, loosening, ventilating and moisture and fertilizer retaining capabilities are strong, potted plants can be simply and conveniently cultivated, energy is saved, moisture and fertilizer retaining capability and bactericidal capability are strong, no pest and disease damage is caused, no pungent smell is produced and raw materials are pure natural and also has the advantages that maintenance time of the indoor plants can be greatly prolonged and survival rate of indoor maintenance can be greatly improved.

The invention belongs to the technical field of concrete engineering, particularly relates to a preparation method of anti-cracking early strength concrete for a pipe gallery, and solves the problems that concrete is insufficient in early strength and poor in anti-seismic and anti-cracking performance, and a pipe gallery concrete structure cannot quickly reach the strength and cannot be prevented from generating harmful cracks in the prior art. The preparation method of the anti-cracking early strength concrete for the pipe gallery comprises the steps of adding Portland cement, slag cement and aggregate into a stirrer, and mixing to obtain a dry mixture; and sequentially adding synthetic fibers, an early strength additive, a polycarboxylate superplasticizer and sodium dodecyl sulfate into the dry mixture while stirring, uniformly stirring and mixing, adding water, and stirring until the concrete performance meets the pouring requirement. The preparation method is simple, the functional advantages of all the raw materials of the concrete are fully utilized, the obtained concrete is used for pipe gallery construction, it can be effectively guaranteed that the pipe gallery concrete structure rapidly reaches the strength, meanwhile, harmful cracks are not generated, and the comprehensive performance is excellent.

The invention disclose a novel polyether polyamine compound with a structural formula (I) and a synthesis method thereof as well as a maintenance product for a diesel motor fuel system. The polyether polyamine compound has the characteristics of efficiently clearing deposited carbon of the diesel (gasoline) motor fuel system and thoroughly clearing the deposited carbon of an air intake system anda combustion chamber of a diesel motor. By using the maintenance product for the diesel motor fuel system, the economic efficiency of fuel can be improved, the demounting-free maintenance of the diesel motor can be achieved, the tail gas emission of an automobile is reduced, and energy conservation and environmental protection can be realized.

The invention discloses a stabilized treatment method for realgar tailing residues. The stabilized treatment method for the realgar tailing residues comprises the following steps of (1) crushing the realgar tailing residues, adding water inside, uniformly stirring, and carrying out first-stage microwave treatment under the action of a microwave field at the power ranging from 100W to 300W; (2) adding water and ferrous salt inside, uniformly stirring, feeding air or oxygen, and meanwhile, carrying out second-stage microwave treatment under the action of a microwave field at the power ranging from 300W to 500W; and (3) carrying out third-stage microwave treatment under the action of a microwave field at the power ranging from 500W to 700W, so that the stabilization of the realgar tailing residues is realized. According to the stabilized treatment method for the realgar tailing residues provided by the invention, through designing a whole process technology of the method, especially improving parameters and conditions of a key microwave treatment process, and dissolving, oxidizing and stabilizing the realgar tailing residues for three stages, the problems of slow calcium arsenate dissolution rate, slow arsenic sulfide oxidation rate and insufficient product long-time stability can be effectively solved.

A plasma processing apparatus has a vacuum container having a processing chamber in which a wafer is processed by plasma and at least one member constituting the vacuum container movable and detachable in a horizontal direction with respect to a base plate. The plasma processing apparatus includes a lifter arranged at a side of the vacuum container across the vacuum container on the base plate, coupled to an end portion on the opposite side of a vacuum transfer chamber on which the wafer is transferred in a decompressed interior, and having a vertical shaft to move the detachable member vertically. The lifter includes: a coupling portion coupled to the vertical shaft and the detachable member and moved along the vertical shaft; and a turning shaft being a joint portion arranged at the coupling portion and having a vertical rotational shaft, the detachable member being horizontally turned around the turning shaft.

The invention discloses a wearing layer for a preventive maintenance technology and a construction method of the wearing layer. The wearing layer for the preventive maintenance technology comprises an ultrathin wearing layer, a rubber powder modified asphalt bonding layer, and a stress absorbing layer connected to the upper surface of an original pavement, wherein the upper surface of the rubber powder modified asphalt bonding layer is connected with the ultrathin wearing layer, and the lower surface of the rubber powder modified asphalt bonding layer is connected with the stress absorbing layer. According to the wearing layer, the shearing action of a cement concrete crack or the expansion of an asphalt concrete reflection crack can be eliminated, good bonding property of rubber powder asphalt can be utilized, an original cement concrete pavement, the stress absorbing layer and the ultrathin wearing layer are bonded into an integral body to form a good covering surface which resists cracking, impaction, seepage and stripping, and finally the purpose of long maintenance time is achieved, and thus the wearing layer has great significance.

The application relates to the field of concrete materials, and specifically discloses a corrosion-resistant and anti-seepage concrete material and a preparation method thereof. Corrosion-resistant and anti-seepage concrete materials include the following raw materials in parts by weight: cement, water, fine sand, gravel, mineral admixture, magnesium oxide, nano-sulfur, hexamethyldisiloxane, octamethylcyclotetrasiloxane alkane, dodecamethylcyclohexasiloxane; its preparation method is 1) weigh the mineral admixture and magnesium oxide according to the corresponding weight parts, and mix them evenly to obtain the admixture component 1; 2) weigh the sulfur according to the corresponding weight and polysiloxane defoamer, mix uniformly to obtain the admixture component 2; 3) mix the admixture component 1, admixture component 2 and other raw materials evenly, and prepare the corrosion-resistant and anti-seepage concrete material . The corrosion-resistant and anti-seepage concrete material of the present application can make it difficult for water to penetrate into concrete pores, and has better corrosion resistance and anti-seepage performance.

The invention discloses a synthetic method of geopolymer. Metakaolin is taken and added into expired phosphate group polishing liquor for being mixed for reacting, and a product is obtained after the reaction is ended. The applied expired phosphate group polishing liquor accounts for 70%-75% of the weight of metakaolin, wherein the expired phosphate group polishing liquor comprises the following vital components: 65%-75% of phosphoric acid, 8%-12% of sulfuric acid and 2%-5% of nitric acid. An excitant for the synthetic method is acidy, so that the synthesized geopolymer can be prevented from generating alkali-aggregate reaction, and the synthesized product is good in performance and excellent in quality; furthermore, the expired phosphate group polishing liquor is applied as the excitant for synthesizing the geopolymer to realize the recycling of wastes, so that not only is environment protected, but also cost of producing the geopolymer material is obviously lowered; moreover, the synthetic method disclosed by the invention is easy to operate, and concise in technological process.