外文翻译-散装水泥运输器具.docVIP

附 录 (英文文献及中英文对照) Bulk cement transport apparatus Abstract A bulk material transport apparatus, such as a truck or trailer, having at least one bulk material pressure vessel mounted thereon. The pressure vessel is provided with at least one sealable hatch opening, a first port and a second port all of which are offset from the apex of a torispherical top portion of the pressure vessel. The pressure vessel is provided with at least one discharge port located in a toriconical bottom portion thereof and is also provided with air inlet means for introducing pressurized air into the vessel. An operator platform being positioned at a preselected distance from the offset hatch opening and being within such proximity of the offset hatch opening so as to enable an operator positioned on the operator platform to gain access to the interior of the pressure vessel through the hatch opening is provided. Background The use of mobile pressure vessels to transport dry granular bulk cement is routinely used in the treating of oil and gas production wells. Typically, prior art vessels have a toriconical, or funnel, shaped bottom portion, a vertical cylindrical side wall, and a torispherical, or dome shaped, top portion. The vessels are typically mounted in tandem on a truck bed or on a tractor trailer, whereupon the vessels can be transported to and/or stored at the site of an oil or gas well. The vessels are designed to allow cement to be loaded into the vessel via a re-closable hatch located on the domed top portion of the vessel prior to being transported to the well site and/or while the vessels are located at the well site. Some prior art vessels are additionally designed to allow for the pneumatic conveyance of the cement into the vessel. Cement is conveyed out of the vessel via an external air supply and aerators and plumbing located within and about the vessels. After being conveyed out of the vessel, the cement is routinely piped into a separator, which serves to reduce