摘要:
Connecting sleeve comprising a pair of shells or halves (2 and 3), each having a pair of diametrically opposite longitudinal edges (4,5) one of which extends to form a respective protruding wing (6), securing means (9, 10) to removably clamp or lock a pair of wings (6) each integral with a respective halve (2, 3) arranged facing each other. At the longitudinal edge diametrically opposite to each wing (6) of each half (2 or 3) a toothing (7) is provided having a reverse mirror symmetrical shape. The tips of the teeth are widened and the bottom of the recesses between adjacent teeth is correspondingly undercut so as to allow said two edges (5) to be removably joint coupled together.
摘要:
The invention relates to a pipe coupling or pipe clamp (3) for connecting or repairing pipes (1, 2). Said coupling comprises a sealing cuff (30) and a housing (10). An intumescent coating (8) is applied to the exterior of the coupling to protect against the effects of fire. In the principal embodiment, this dispenses with the conventional multi-ply ceramic fibre woven layers (4) that are currently used in the vicinity of the housing (10).
摘要:
A pipe coupling has an elastomer packing collar (5) arranged in a closable housing (4) with radial end walls (14) and comprising two axially spaced apart ring-shaped beads (6) which project radially inwards and sealingly lie against a pipe (1, 2). Each ring-shaped bead (6) subdivided into two adjacent radial beads (8, 9) by a ring-shaped gap (7) oriented at an acute angle to the longitudinal axis of the pipe coupling. This gap (7) forms at the outer radial bead (9) a sharp-cornered packing lip (10). The ring-shaped gap (7) may be closed by pressing together and elastically deforming the two adjacent radial beads (8, 9). Each front side (11) of the packing collar (5) is inclined inwards towards the longitudinal axis of the pipe coupling. A conical clamping ring (13) with a subdivided circumference, axially and radially supported on the housing (4), lies against the front side (11) of the packing collar (5). When the housing (4) is narrowed and closed and the packing collar (5) is clamped, the clamping ring (13) lies on the corresponding pipe (1 or 2) of the piping. The inwardly inclined front side (11) may be substantially designed as an inner cone (12) and the clamping ring (13) may have a rounded inner edge (20).
摘要:
Steckstück zur dichten Verbindung von zwei mit axialem Abstand zueinander benachbart angeordneten, rohrförmigen Hohlkörpern (1, 2), umfassend eine Verbindungshülse (3) aus zähhartem Werkstoff, die zumindest stirnseitig beiderseits von Dichtringen (4, 5) aus elastomerem Werkstoff umschlossen ist, wobei die Dichtringe (4, 5) an die Innenwand (6, 7) der jeweiligen Hohlkörper (1, 2) dichtend anlegbar sind und zumindest ein Dichtring (4, 5) die entsprechende Stirnseite der Verbindungshülse (3) in axialer Richtung mit einem Überstand (8, 9) überragt. Der Überstand (8, 9) ist als radial nach außen auffederbare Dichtlippe (10, 11) ausgebildet, wobei die Dichtlippe (10, 11) bei Überdruckbeaufschlagung innerhalb des Steckstücks dichtend an die die Stirnseite außenseitig umschließende Innenwand (6, 7) des Hohlkörpers (1, 2) anlegbar ist.
摘要:
Eine Vorrichtung zum Anzeigen des Erreichens des Sollwerts der Spannkraft einer spannbaren Schelle, die ein C-förmiges Schellenband (1) mit an seinen axialen Enden nach innen ragenden Stirnwänden (2) und mit zusammenziehbaren Spannbacken aufweist, hat für jede Stirnwand (2) wenigstens ein etwa H-förmiges Anzeigeelement (22), das auf dem radial inneren Rand der Stirnwand (2) aufsetzbar ist und in der Einbaulage des Anzeigeelements (22) beim Erreichen des Sollwerts der Spannkraft der Schelle und eines vorbestimmten Abstands des inneren Randes der Stirnwand (2) von einem in der Schelle eingespannten zylindrischen Gegenstand (3) zerbricht. Dadurch wird erreicht, daß die durch das Zerbrechen bewirkte Anzeige mit höherer Zuverlässigkeit und Genauigkeit dem Sollwert der Spannkraft und dem Erreichen der gewünschten oder zulässigen Verpressung einer gegebenenfalls vorhandenen elastomeren Manschette (15) der Schelle entspricht.
摘要:
A method of forming a cuff (14) on a section of tubular pipe (10) which defines first and second ends and inner and outer surfaces. The method comprises the initial step of applying an outer layer of polymer (42) material to a portion of the outer surface of the pipe (12) such that a portion of the outer layer (42) extends beyond and covers the first end of the pipe. Thereafter, an inner layer of polymer material (46) is applied to a portion of the inner surface of the pipe. The inner layer (46) is then blended into the outer layer (42) so as to define a bull nose (44) of the cuff (14) which extends beyond the first end of the pipe (10).
摘要:
Groove rollers, which are for use with a roll grooving device for forming a groove in an outer surface of a pipe near an end of the pipe (208), include an outside roller (202) and an inside roller (204). The outside roller has a peripheral surface that includes a first protrusion (210) configured to form the groove, and a second protrusion (212) having a surface configured to inhibit flaring of the end of the pipe when forming the groove. The inside roller has a peripheral surface that includes a notch (220) configured to receive the first protrusion, and may have a second notch (222) configured to receive the second protrusion. A pipe abutment surface (242) against which the end of the pipe is positioned when forming the groove is formed on one of the inside or outside rollers. In another feature, the outside roller includes a first aligning element (215) and the inside roller includes a second aligning element (219) configured to interact with the first aligning element to align the outside and inside rollers when forming the groove.