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Petroleum wellhead annular space sealing device

The invention discloses a petroleum wellhead annular space sealing device. The petroleum wellhead annular sealing device is used for sealing an annular space between a wellhead sealing body and a petroleum pipe, at least one annular groove is formed in the inner wall surface of the sealing body, and the sealing body is provided with an injection hole which is communicated to a centrifugal end of the annular groove; the petroleum wellhead annular space sealing device further comprises a sealing ring, a power ring, and an injection component, wherein the sealing ring is embedded into the annular groove, the sealing ring is used for sealing the groove in the radial direction by being jointed to the wall surface of the annular groove, and is used for sealing the annular space by being jointed to the outer wall of the petroleum pipe, the power ring is installed in the annular groove and is located between the groove bottom of the annular groove and the sealing ring, and the injection component is installed in an inlet of the injection hole, and is used for injecting fluid with given pressure so as to make the power ring push the sealing ring to tightly press the petroleum pipe. In the petroleum wellhead annular space sealing device, the requirement for deformation capability of a sealing part is low, and meanwhile the sealing capability can be effectively improved.
Owner:DEZHOU UNITED GASOLINEEUM MACHINERY

Method for realizing interactive three-dimensional virtual city e-commerce platform

The invention discloses a method for realizing the interactive three-dimensional virtual city e-commerce platform based on a virtual reality technique, which provides a new way to vividly display three-dimensional shops and objects on the Internet, and provides users with a virtual reality which is characterized by three-dimensional virtual space and real-time interaction, and can multilaterally display commodities, fully show the characteristics and stereo feeling of the commodities, allow the users to look up various characteristics of the goods in detail, and provide great observation space and freedom for the users. The technical scheme of the invention comprises that: the method comprises the following steps: automatically processing a 360-degree image of the articles so as to generate vivid article three-dimensionally displayed files, constructing virtual city buildings and three-dimensional shops by software such as 3DSMax, AutoCAD, Photoshop and the like, and realizing a virtual shopping platform which can be browsed and interacted by the users by Java and flash RIA (Rich Internet application) technology; and adopting Flash 3D technology and virtual reality technology to embed the article three-dimensional displayed file into the three-dimensional shops and embed the files into the virtual city web pages. The invention is applied in the field of electronic commerce technology, and also belongs to the category of virtual reality technology.
Owner:SHANGHAI WANGCHENG NETWORK TECH
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