Heat exchanger

• US 4,244,423 A
• Filed: 07/17/1978
• Issued: 01/13/1981
• Est. Priority Date: 07/17/1978
• Status: Expired due to Term

• Current Assignee: Bruno H. Thut, Dale T. Lehman
• Original Assignee: Bruno H. Thut, Dale T. Lehman
• Inventors: Lehman, Dale T., Thut, Bruno H.
• Primary Examiner(s): Scott, Samuel
• Assistant Examiner(s): Streule, Jr., Theophil W.
• Application Number:
  US05/924,912
• Time in Patent Office: 911 Days
• Field of Search: 165/81, 165/82, 165/158, 285/356 R, 285/415
• US Class Current: 165/82
• CPC Class Codes: F28D 7/16 the conduits being arranged in parallel spaced relation F28D7/0008 - F28D7/0058 take precedence; F28D7/02 - F28D7/10 take precedence
• CPC Class Codes: F28F 21/02 of carbon, e.g. graphite
• CPC Class Codes: F28F 2275/20 with threaded elements
• CPC Class Codes: F28F 9/0219 Arrangements for sealing end plates into casing or header box; Header box sub-elements F28F9/0236 takes precedence
• CPC Class Codes: Y10S 165/056 Fluid sealing means between movable header and enclosure

Abstract

A heat exchanger comprising an elongated tubular cylindrical member having fluid ingress and egress openings adjacent to its opposite ends and external flanges at opposite ends one of which flanges has a counterbore facing in the direction away from the cylindrical member. A plurality of graphite tubes within the cylindrical member having their opposite ends connected to graphite headers one of which is connected through a graphite end member to one end of the cylindrical member and the other of which has an outside diameter slightly less than the inside diameter of the cylindrical member and within which it is slidable or floats. The floating header has an external circumferential groove with outwardly inclined ends. A seal is provided at the end of the cylindrical member at which the floating header is located which seal includes packing in the counterbore in the adjacent flange and a gland member slidable on the floating header and adjustable towards the flange. A part of the gland member overlies one end of the external groove in the floating header member. A second graphite end member abuts the end of the floating header facing in the direction away from the cylindrical member and is clamped thereto by a clamp plate engaging the other side of the end member. A sleeve formed of a plurality of arcuately shaped parts is located in the circumferential groove in the floating header with an end underlying the gland member and has an external groove spaced from the gland member in which a split ring is located extending radially of the sleeve and having its radial outer or circumferential surface inclined radially outwardly in the direction away from the cylindrical member. A retainer ring surrounds the split ring and is connected to the clamp plate at the end of the second end member facing in the direction away from the cylindrical member by a plurality of bolts.

Claims

1. A heat exchanger of the character described comprising an elongated shell having a tubular cylindrical member having flange members adjacent to its opposite ends, one of said flange members having a counterbore facing in the direction away from said cylindrical member, a plurality of tubes having their opposite ends connected to header members, means including an end member connecting one of said header members to the other of said flange members, the other of said header members having an outside diameter slightly less than the inside diameter of said end of said cylindrical member at which said one of said flange members is located and being slidable therein, said other of said header members having an external circumferential groove therein with at least the end thereof farthest from said one of said flange members being outwardly inclined, another end member adjacent to the end of said other of said header members facing in the direction away from said cylindrical member, means for clamping said another end member to said other of said header members comprising a sleeve member formed of a plurality of arcuately shaped parts located in said circumferential groove in said other of said header members and having at least the end thereof furthest from said one of said flange members beveled complementary to the taper of the adjoining end of said groove in said other of said header members, a split ring member surrounding said sleeve member and having its radial outer or circumferential surface inclined radially outwardly in the direction away from said end of said cylindrical member at which said one of said flange members is located, a retainer ring member surrounding said split ring member, a clamp plate at the end of said another of said end members at the end thereof facing in the direction away from the end of said cylindrical member at which said one of said flange members is located, and means for adjustably connecting said retainer ring member to said clamp plate.

2. A heat exchanger of the character described comprising an elongated shell having a tubular cylindrical member having flange members adjacent to its opposite ends, one of said flange members having a counterbore facing in the direction away from said cylindrical member, a plurality of tubes having their opposite ends connected to header members, means including an end member connecting one of said header members to the other of said flange members, the other of said header members having an outside diameter slightly less than the inside diameter of said end of said cylindrical member at which said one of said flange members is located and being slidable therein, said other of said header members having an external circumferential groove therein with at least the end thereof farthest from said one of said flange members being outwardly inclined, a seal at said end of said cylindrical member at which said one of said flange members is located including packing in said counterbore in said one of said flange members and a gland member slidable on said other of said header members, means for adjusting said gland member towards said one of said flange members, another end member adjacent to the end of said other of said header members facing in the direction away from said cylindrical member, means for clamping said another end member to said other of said header members comprising a sleeve member formed of a plurality of arcuately shaped parts located in said circumferential groove in said other of said header members and having at least the end thereof furthest from said one of said flange members beveled complementary to the taper of the adjoining end of said groove in said other of said header members, a split ring member surrounding said sleeve member and having its radial outer or circumferential surface inclined radially outwardly in the direction away from said end of said cylindrical member at which said one of said flange members is located, a retainer ring member surrounding said split ring member, a clamp plate at the end of said another of said end members at the end thereof facing in the direction away from the end of said cylindrical member at which said one of said flange members is located, and means for adjustably connecting said retainer ring member to said clamp plate.

3. A heat exchanger of the character described comprising an elongated shell having a tubular cylindrical member with flange members adjacent to its opposite ends, one of said flange members having a counterbore facing in the direction away from said cylindrical member, a plurality of tubes having their opposite ends connected to header members, means including an end member connecting one of said header members to the other of said flange members, the other of said header members having an outside diameter slightly less than the inside diameter of said end of said cylindrical member at which said one of said flange members is located and being slidable therein, said other of said header members having an external circumferential groove therein with at least the end thereof furthest from said one of said flange members being outwardly inclined, a seal at said end of said cylindrical member at which said one of said flange members is located including packing in said counterbore in said one of said flange members and a gland member slidable on said other of said header members a part of which gland member overlies one end of said external groove in said other of said header members, means for adjusting said gland member towards said one of said flange members, another end member adjacent to the end of said other of said header members facing in the direction away from said cylindrical member, means for clamping said another end member to said other of said header members comprising a sleeve member formed of a plurality of arcuately shaped parts located in said circumferential groove in said other of said header members with one end thereof underlying said gland member and having at least the other end thereof beveled complementary to the taper of the adjoining end of said grooves in said other of said header members, said sleeve member having an external groove spaced from said gland member in the direction away from said end of said cylindrical member at which said one of said flange members is located, a split ring member in said groove in said sleeve member extending radially of said sleeve member and having its radial outer or circumferential surface inclined radially outwardly in the direction away from said end of said cylindrical member at which said one of said flange members is located, a retainer ring member surrounding said split ring member, a clamp plate at the end of said another of said end members at the end thereof facing in the direction away from the end of said cylindrical member at which said one of said flange members is located, and means for adjustably connecting said retainer ring member to said clamp plate.