31results about How to "Play the role of supporting the skeleton" patented technology

The invention discloses a device for detecting unburned carbon in flue dust of a boiler, and relates to the technical field of detection of the unburned carbon in flue dust. The device disclosed by the invention comprises a storage container, a burning mechanism is arranged in the storage container, the burning mechanism comprises: a plurality of burning spherical shells which are sequentially nested with each other, wherein a plurality of through holes are respectively formed in all burning spherical shells in the burning spherical shell on the outermost layer; and a plurality of connecting cylinders, wherein the connecting cylinders are inserted from the burning spherical shell on the outermost layer into the burning spherical shell on the innermost layer, and the connecting cylinders are respectively fixed on each layer of burning spherical shells; wherein a connecting cylinder that vertically penetrates through all burning spherical shells from top to bottom is provided with a plurality of through holes along the entire length direction. The device disclosed by the invention aims at overcoming the shortcomings of worse measurement accuracy of the existing technical scheme of measuring the unburned carbon in flue dust based on a burning carbon loss method, and providing the device for detecting the unburned carbon in flue dust of the boiler to improve the measurement accuracy of the unburned carbon in flue dust.

The invention discloses a tunnel lining structure of an existing railway line and a construction method thereof. The tunnel lining structure comprises multiple steel arch frames and a cast-in-place reinforced concrete lining; the construction method comprises steps: 1. Existing lining is chiseled ; 2. Determine the installation position of the steel arch; 3. Process and manufacture the steel arch; 4. Lower the steel arch; 5. Erection of the steel arch; Applied as lining steel bars; 9. Applied as lining concrete; 10. Grouting reinforcement. The structure of the invention is reasonably arranged, the cast-in-place reinforced concrete lining is closely connected with the existing lining, and the existing lining can be effectively reinforced without affecting the existing lining structure, and the outer formwork can be reused during the concrete pouring process. The construction cost is effectively reduced. At the same time, the steel arch frame is used as a side formwork. It does not need to be dismantled after use. It can be stressed and work together with the existing lining, which greatly improves the safety of the cast-in-place reinforced concrete lining structure.

The invention discloses a foundation pit with a solid structure and an earthwork excavation method thereof, relates to the technical field of building construction, and aims to solve the problem that the structure of the traditional foundation pit is not firm. The support piles distributed on the side wall of the foundation pit body, the steel mesh connected to the inner wall of the support pile and arranged obliquely, the upper end of the steel mesh is connected to the inner wall of the support pile, and the lower end is connected to the ground. Stones are filled between the side walls, and reinforcement beams are connected between adjacent support piles. The foundation pit with firm structure and its earthwork excavation method of the present invention have the advantages of convenient excavation and firm structure.

The invention discloses a carbon content detection method of fly ash of a boiler, and relates to the technical field of detection of the carbon content of the fly ash. The carbon content detection method of the fly ash of the boiler comprises the following steps: Step A, preparation; Step B, adding of solid particles and the fly ash; Step C, vibration; Step D, primary weighing; Step E, burning; Step F, secondary weighing; and Step G, cleaning. The invention aims to overcome the shortcoming of relatively low measurement accuracy of an existing technical scheme of measuring the carbon content ofthe fly ash based on a burning carbon loss method, and the carbon content detection method of the fly ash of the boiler is provided, so that the accuracy of measuring the carbon content of the fly ash is improved.

The invention provides a preparation method of a novel PVC-bamboo-plastic composite material. The preparation method comprises the following steps: (1) mixing aniline and formaldehyde together in water bath, adding phenol and heating, performing a reflux reaction at heat-preservation condition, dehydrating under reduced pressure, and discharging and cooling to obtain a benzoxazine resin; (2) adding a borate coupling agent to absolute ethyl alcohol, adding magnesium borate whisker and stirring, adding azodiisobutyronitrile under the protection of nitrogen and continuing stirring, discharging, filtering by suction, washing, drying, and extracting to obtain modified magnesium borate whisker; (3) drying bamboo powder, taking the bamboo powder out and adding the ethanol solution of a titante coupling agent, stirring, taking out, washing, drying and then grinding, thereby obtaining modified bamboo powder; and (4) adding PVC, trimethyl phosphate, a plasticizer, a stabilizer, an antioxidant, the benzoxazine resin, the modified magnesium borate whisker and the modified bamboo powder to a stirrer and stirring, shifting to a mixer for mixing, shifting to a hot press for hot pressing, thereby obtaining the PVC-bamboo-plastic composite material.

The invention discloses a vibration compaction device and a vibration compaction method for a backfill area in building construction, comprising the following steps: selecting backfill soil, and laying the backfill soil layer by layer into a foundation pit; vibrating once for each layer of backfill soil laid Compaction; before vibrating and compacting the backfill, monitor the moisture content of the backfill in real time; perform vibration compaction on the backfill, and suck out the backfill through infiltration at the position with a higher moisture content of the backfill Inner moisture, where the moisture content of the backfill is low, inject water into the backfill through direct water injection; a geogrid is placed under each layer of backfill. The invention effectively improves the vibration compaction effect by monitoring and controlling the water content of the backfill soil in the vibration compaction area.

The invention discloses a high-barrier TPU film for pipeline lining and a preparation method thereof. Using MWCNTs and TPU as raw materials, adopting an oxidation longitudinal cutting MWCNTs method, and controlling the mass ratio of MWCNTs and KMnO4, GONRs-CNTs nanocomposite materials are prepared. The complex, and then use TPU resin as the matrix, and use the solution coating film forming process to prepare the GONRs-CNTs / TPU composite film. The composite material film prepared by the present invention, on the one hand, reduces the solubility of gas in polymers; on the other hand, it also makes the diffusion and permeation path of gas tortuous, prolongs the diffusion path, and improves the penetration of small molecular substances such as gas. Therefore, the barrier performance of the material has been greatly improved. It is especially suitable for the lining of unconventional gaseous energy transmission pipelines such as shale gas, and has a wide range of social and economic benefits.

The invention discloses a fly ash carbon content detection device and relates to the technical field of fly ash carbon content detection. The invention includes a storage container, and a burning mechanism is arranged in the storage container. The burning mechanism includes: several burning spherical shells nested in sequence; Into the interior of the innermost burning spherical shell; each vent tube extends vertically upwards after being led out from the end of the connecting cylinder, and the upper end of each vent tube communicates with the lower end of a vent respectively, and the vent is the inner diameter A channel widening from bottom to top; the bottom end of the outermost burning spherical shell is connected to the bottom of the storage container through a support column. The purpose of the present invention is to overcome the shortcomings of poor measurement accuracy of the existing technical solutions based on the loss-of-carbon method for measuring fly ash carbon content, and provide a fly ash carbon content detection device, which improves the fly ash carbon content Accuracy of measurement.