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    Piston and piston rod seals for a multistage high pressure gas compressor
    2.
    发明专利
    Piston and piston rod seals for a multistage high pressure gas compressor 未知

    公开(公告)号：GB1003258A

    公开(公告)日：1965-09-02

    申请号：GB2558462

    申请日：1962-07-04

    Applicant: BASF AG

    Inventor： WEBER HEINRICH ,  FRIEDENREICH HEINRICH

    IPC: F04B25/00 ,  F04B25/02 ,  F04B27/02 ,  F04B37/12 ,  F04B39/04

    Abstract: 1,003,258. Piston and stuffing-box packing. BADISCH ANILIN & SODA-FABRIK A.G. July 4, 1962 [July 5, 1961], No. 25584/62. Headings F2B and F2T. In a multi-stage compressor comprising pistons 14, 15 and 16 having piston rings 17, 18 and 19 respectively, the high pressure piston 16 is additionally sealed by fixed U-packing rings 21, 22 (Fig. 2) housed in the high pressure cylinder 3 and the space 23 between the piston rings 19 and the first adjacent U-ring 21 is connected through a pipe 25 and a non-return valve 29 to the suction side of the high pressure cylinder 3 and the space 24 between the first and second U-rings is connected through a pipe 26 and a non-return valve 30 to the suction side of the intermediate pressure cylinder 2. The low, intermediate and high pressure cylinders 1, 2 and 3 respectively are fitted with suction valves 4 and 5, 8 and 10 and delivery valves 6 and 7, 9 and 11. Oil traps 27, 28 and cooling means 33 and 34 are provided in the pipes 25 and 26. In a modification for a twostage after-compressor, Fig. 3 (not shown), comprising coaxially opposed medium and high pressure cylinders, the high pressure and medium pressure piston rods are packed by five and three U-rings respectively and each side of the first U-ring of the high pressure rod packing is connected to the suction side of the high pressure cylinders whilst each side of the first U-ring of the medium pressure cylinder and the spaces between the second and third and between the third and fourth U-rings of the high pressure rod packing are connected to the suction side of the medium pressure cylinder. The piston rings may be made of or coated with plastic, for example, polyamides or polytetra-fluoroethylene.

    Detachable connection of a piston with a piston rod, especially for a piston compressor
    10.
    发明专利
    Detachable connection of a piston with a piston rod, especially for a piston compressor 未知

    公开(公告)号：GB1067570A

    公开(公告)日：1967-05-03

    申请号：GB3486764

    申请日：1964-08-26

    Applicant: BASF AG

    Inventor： FRIEDENREICH HEINRICH ,  ERDMANN KURT

    IPC: F04B39/00 ,  F16J1/00 ,  F16J1/10

    Abstract: 1,067,570. Pistons. BADISCHE ANILIN- & SODA-FABRIK A.G. Aug. 26, 1964 [Aug. 29, 1963], No. 34867/64. Heading F2T. A detachable connection between a piston 7 and a piston-rod 1 comprises two cams 4 on the larger of two coaxial bores 2, 3 in the rod 1, a shank 5 having one end 5a adapted to fit in the smaller bore 3 and two bosses 6, of similar shape to the cams 4, which during assembly are moved axially past the cams and then arranged to lie behind the cams by partial rotation of the shank, the piston being bored to pass over the shank and having an extension (8, Fig. 4), which slidably fits in the bore 2 and has two projections 9 which extend between the cams and between the bosses to prevent relative rotation of the piston and piston-rod. The piston is tightened on the rod by a nut 10 and sealed thereto and to the shank by a seal 13. A spring 12 is disposed between the end 5a of the shank and bottom of the bore 3.

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