Method and apparatus for producing a tube partially having a non-circular cross section and having circular end portions and use thereof

    公开(公告)号:US10227252B2

    公开(公告)日:2019-03-12

    申请号:US14470970

    申请日:2014-08-28

    Applicant: Schott AG

    Abstract: Disclosed is a method for the production of a tube having, in sections, a non-circular profile by deforming, comprising: a) providing a tube, which has a circular initial profile; b) conveying the tube in a hot, malleable state through a nip, which is formed by squeezing rollers and has a first nip width, which is larger than or equal to an outer dimension of the initial profile; c) adjusting the squeezing rollers for setting a second nip width, which is smaller than the outer dimension of the initial profile, and deforming the initial profile in said hot, malleable state for obtaining said non-circular cross section; and d) adjusting the squeezing rollers for setting a third nip width, which is larger than or equal to the outer dimension of the initial profile, and severing said tube in a region having a circular cross section; so that respective end portions of said tube have a circular cross section According to the invention, the tubes can be connected reliably with connecting-members or other tubes via the end portions having the circular profile using proven tube connection technologies. At the same time there is at least one central section having a non-circular cross section which is of advantage, for example for applications in photobioreactors.

    APPARATUS AND METHOD FOR COOLING A GLASS STRAND PRODUCED BY MEANS OF TUBE DRAWING

    公开(公告)号:US20180305238A1

    公开(公告)日:2018-10-25

    申请号:US15957965

    申请日:2018-04-20

    Applicant: SCHOTT AG

    CPC classification number: C03B25/04

    Abstract: The present disclosure provides the installation of an apparatus for cooling a manufactured glass rod. The apparatus has at least two cooling chambers arranged along the glass strand for sectional cooling of the glass strand. A gaseous cooling medium is either blown into the cooling chamber or sucked out of the cooling chambers. The glass strand is passed through each cooling chamber, with an orifice provided at each of the pass-through points, whose opening is larger than the cross-section or diameter of the glass strand. As a result, an annular gap forms between the opening and the surface of the glass strand, so that a turbulent flow of the gaseous cooling medium is generated, which enables a high cooling rate.

    METHOD AND APPARATUS FOR PRODUCING A TUBE PARTIALLY HAVING A NON-CIRCULAR CROSS SECTION AND HAVING CIRCULAR END PORTIONS AND USE THEREOF
    13.
    发明申请
    METHOD AND APPARATUS FOR PRODUCING A TUBE PARTIALLY HAVING A NON-CIRCULAR CROSS SECTION AND HAVING CIRCULAR END PORTIONS AND USE THEREOF 审中-公开
    用于制造具有非圆形横截面且具有圆形端部的管的方法和装置及其使用

    公开(公告)号:US20150064779A1

    公开(公告)日:2015-03-05

    申请号:US14470970

    申请日:2014-08-28

    Applicant: Schott AG

    Abstract: Disclosed is a method for the production of a tube having, in sections, a non-circular profile by deforming, comprising: a) providing a tube, which has a circular initial profile; b) conveying the tube in a hot, malleable state through a nip, which is formed by squeezing rollers and has a first nip width, which is larger than or equal to an outer dimension of the initial profile; c) adjusting the squeezing rollers for setting a second nip width, which is smaller than the outer dimension of the initial profile, and deforming the initial profile in said hot, malleable state for obtaining said non-circular cross section; and d) adjusting the squeezing rollers for setting a third nip width, which is larger than or equal to the outer dimension of the initial profile, and severing said tube in a region having a circular cross section; so that respective end portions of said tube have a circular cross section According to the invention, the tubes can be connected reliably with connecting-members or other tubes via the end portions having the circular profile using proven tube connection technologies. At the same time there is at least one central section having a non-circular cross section which is of advantage, for example for applications in photobioreactors.

    Abstract translation: 公开了一种制造管子的方法,该管子通过变形而具有非圆形轮廓,其包括:a)提供具有圆形初始轮廓的管; b)通过挤压辊形成的具有大于或等于初始轮廓的外部尺寸的第一夹持宽度的辊隙将热管,可延展状态的管输送; c)调整所述挤压辊以设定小于所述初始轮廓的外部尺寸的第二夹持宽度,并使所述热的可延展状态下的初始轮廓变形以获得所述非圆形横截面; 以及d)调整所述挤压辊以设定大于或等于所述初始轮廓的外部尺寸的第三夹持宽度,以及在具有圆形横截面的区域中切断所述管; 使得所述管的各个端部具有圆形截面。根据本发明,通过使用经过验证的管连接技术,管可以通过具有圆形轮廓的端部与连接构件或其它管可靠地连接。 同时存在至少一个具有非圆形横截面的中心部分,其优点在于例如用于光生物反应器中的应用。

    INLAY, SLEEVE SHAFT WITH INLAY AND REFRACTORY TUBE WITH SLEEVE SHAFT

    公开(公告)号:US20210371320A1

    公开(公告)日:2021-12-02

    申请号:US17334893

    申请日:2021-05-31

    Applicant: Schott AG

    Inventor: Volker Trinks

    Abstract: An inlay for a sleeve shaft for collecting particles originating from a material of the sleeve shaft at least in part, at least one fluid being flowable through the sleeve shaft along an axial direction which is parallel to a main extension of the sleeve shaft, the inlay includes at least one first wall section and the inlay is inserted or insertable at least in part into the sleeve shaft such that at least one part of the first wall section has a radial distance from at least one first area of an inner surface of the sleeve shaft, and, hence, that the inlay together with the first area of the inner surface of the sleeve shaft encloses at least one volume domain, which volume domain is limited in the axial direction by a limiting element.

    GLASS TUBE ELEMENT WITH IMPROVED QUALITY

    公开(公告)号:US20210310587A1

    公开(公告)日:2021-10-07

    申请号:US17221560

    申请日:2021-04-02

    Applicant: SCHOTT AG

    Abstract: A glass tube element having hollow cylindrical section that has a shell enclosing a lumen and extends along a main extension and an optical delay of a light ray. The shell has a surface facing away from the lumen. The optical delay has values that all fall within a range having a size of between 3 and 30 nm. The optical delay being an optical measurement of the glass tube element by the light ray extending along a measurement path in a direction of perpendicular to the main extension and tangent to a surface of the shell. The measurement path touches the surface for different measurements at different positions each having a different azimuth angle within a cylindrical coordinate system fixedly attached to the glass tube element and having an origin on a center axis of the glass tube element.

    Glass tube
    20.
    发明授权

    公开(公告)号:US12240777B2

    公开(公告)日:2025-03-04

    申请号:US17358467

    申请日:2021-06-25

    Applicant: Schott AG

    Abstract: At least one glass tube has an azimuthal wall thickness deviation WTD of not more than 6.0%, the azimuthal wall thickness deviation being determined based on a lowest wall thickness value and a highest wall thickness value measured within a cross-section of the at least one glass tube, the azimuthal wall thickness deviation WTD being calculated according to the following formula: W ⁢ ⁢ T ⁢ ⁢ D = 100 - ( lowest ⁢ ⁢ wall ⁢ ⁢ thickness ⁢ ⁢ value highest ⁢ ⁢ wall ⁢ ⁢ thickness ⁢ ⁢ value * 100 ) ⁢ ⁢ % .

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