40results about How to "On-site layout is convenient" patented technology

The invention discloses a double-backpressure turboset low-pressure through-flow and condenser selection design method. According to the method, thermodynamic design operating points of turbines are preset, the exhaust steam flow ratio of two low pressure cylinders is set, backpressure at the low pressure side is preset, and the exhaust steam volume flows of the low pressure cylinders at the low pressure side and the high pressure side are calculated according to the backpressure at the low pressure side; a preset value of the backpressure at the low pressure side is adjusted, and specifications of a last-stage blade with the minimum low pressure cylinder exhaust steam leaving-velocity loss are selected; the heat exchange area of condensers at the low pressure side and the high pressure side is calculated, and condenser specifications are selected according to the heat exchange area. Compared with the prior art, the method has the advantages that through non-equalization of mass flow of admission steam and exhaust steam of the two low pressure cylinders, the exhaust steam volume flows of the two low pressure cylinders are the same, and the exhaust steam leaving-velocity losses of the two low pressure cylinders are both minimum under the condition that the same last-stage blade is selected, that is, the sizes of steam exhaust ports of the low pressure cylinders are the same.

The invention discloses a foam generation method and its application in fire extinguishing and a fire extinguishing method, said foam generation method comprising mixing a gas with a foaming substance so as to cause the foaming substance to generate foam, at least part of said gas being generated instantaneously by a gas source, And the ratio of the gas volume that the gas source can generate to the volume of the gas source is not lower than 40. The foam production method of the present invention adopts the method of mixing the gas generated by the gas source in situ and the foaming substance for the first time. Since the volume ratio of the gas volume generated by the gas source to the gas source is relatively high, the stored gas can be greatly reduced. The volume of the container of the source, the small-volume storage equipment can replace the huge air compressor, air compressor unit or other high-pressure gas storage equipment. The present invention uses inert media such as liquid nitrogen to participate in foam foaming, and inert gases will be released after the foam bursts. These inert gases can also inhibit combustion on the surface of burning substances, and help to accelerate fire extinguishing.

The invention relates to a post-cast strip structure and a construction method. The construction method comprises the following steps: arranging an independent supporting body formed by a bottom column supporting plate and a back removal bottom column on the lower part of a back removal bottom mold and arranging a pouring platform column and a hoop side supporting beam on the back removal bottom mold to form a concrete pouring construction platform on a first-removal mold plate; arranging a flexible connecting bar between an upper folding plate and a lower folding plate and enhancing the transverse rigidity of a floorslab side mold through a reinforcing insertion plate; closing the upper part of a channel of the post-cast strip by a cap sealing coiled material and a coiled material rib plate, and closing two ends of the channel of the post-cast strip by a suspended supporting rod and an end closing body to close the post-cast strip at multiple angles; sliding a scraper blade cross beamand a rigid scraper blade along the upper surface of post-cast concrete; and arranging a steam pipeline on the lower surface of a steam curing bracket and a closed tarpaulin on the outer side to maintain the post-cast concrete with steam. The post-cast strip structure can improve the post-cast strip mold plate supporting quality and efficiency and the concrete pouring construction quality and efficiency and improve the stress performance of the construction structure and protect the construction environment.

The invention provides a profile control and water shutoff device for oily sludge, which belongs to the technical field of oil production related equipment and solves the problems that the profile control water shutoff agent cannot be directly produced on site, the production efficiency is low, and the movement is inconvenient. Including the transport vehicle and the complete machine base, the lower end of the transport vehicle is fixed with a waste liquid tank, the complete machine base is detachably fixed on the transport vehicle, and the upper end of the complete machine base is fixed with a material storage tank, a control cabinet, a liquid distribution tank, and several feeding boxes. , a liquid storage tank, several feeding tanks 2 and sludge raw material boxes, the liquid storage tank and several feeding tanks 2 and the liquid distribution tank and several feeding tanks 1 are connected by pipelines, and the vent holes of the liquid distribution tank and the storage tank are all fixed There is a hot steam filter, and a curved capillary is arranged inside the liquid storage tank. The lower end of the curved capillary extends out of the liquid storage tank and is connected with a back-suction fan, which is connected to the two hot-vapor filters through pipelines. The invention is easy to move, can be processed on site to prepare the profile control water blocking agent, mixes evenly, fully utilizes the heat, and speeds up the production efficiency.