Tool kit for heat exchanger and method of detaching heat exchanger end cover

Patent metadata

Field	Value
Publication number	US-12420365-B2
Application number	US-202418597289-A
Country	US
Kind code	B2
Filing date	Mar 6, 2024
Priority date	Mar 6, 2023
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

The present invention provides a tool kit for a heat exchanger and a method for detaching an end cover of a heat exchanger. The tool kit comprises: a first hinge device and a second hinge device, wherein the first hinge device and the second hinge device are mounted between an end flange and the end cover at a first position and a second position on the same axis, the first hinge device and the second hinge devices each comprising: a base, configured to be fixedly connected to the end flange; a rotating member, configured to be fixedly connected to the end cover; and a connecting member, configured to be detachably connected to the base and the rotating member, so that the rotating member is capable of rotating along the same axis relative to the base.

First claim

The invention claimed is:

1. A tool kit for a heat exchanger, wherein the heat exchanger comprises an end flange and an end cover mounted to the end flange, the tool kit comprising:
at least a first hinge device and a second hinge device, wherein the first hinge device and the second hinge device are configured to be mounted between the end flange and the end cover at a first position and a second position on a same axis, the first hinge device and the second hinge devices each comprising:
a base, configured to be fixedly connected to the end flange;
a rotating member, configured to be fixedly connected to the end cover;
a connecting member, configured to be detachably connected to the base and the rotating member, so that the rotating member is capable of rotating along the same axis relative to the base; and
an abutting bolt for passing through a threaded hole of the base to press against the edge of the end flange or to press against one or more spacers arranged between the edge of the end flange and the base.

2. The tool kit for a heat exchanger according to claim 1 , wherein the base comprises a first mounting hole to be connected to a first bolt hole on a back side of the end flange through a first bolt, and the rotating member comprises a second mounting hole to be connected to a second bolt hole on the end cover through a second bolt.

3. The tool kit for a heat exchanger according to claim 1 , wherein the same axis is a vertical axis, wherein, the base has a first pin hole, the rotating member comprises a second pin hole, and the connecting member is a pin that passes through the first pin hole and the second pin hole, where the pin is inserted along the vertical axis into the first pin hole and the second pin hole aligned with each other.

4. The tool kit for a heat exchanger according to claim 3 , wherein the pin comprises a cylindrical body, where a head larger in size than the cylindrical body is provided at a first end of the cylindrical body, and a through hole for installing a lock pin is provided at a second end of the cylindrical body.

5. The tool kit for a heat exchanger according to claim 1 , wherein the one or more spacers include an L-shaped spacer comprising a first plane portion and a second plane portion that are perpendicular to each other, where the first plane portion is arranged on the base, and the second plane portion is arranged between the base and the edge of the end flange.

6. The tool kit for a heat exchanger according to claim 5 , wherein the base comprises a back plate and a bending portion, where the bending portion comprises a first pin hole and the threaded hole, orientation of the pin hole and that of the threaded hole being perpendicular to each other, the back plate comprises a first mounting hole, and the rotating member comprises a rotating member body and a boss at one end of the rotating member body, the boss comprising a second pin hole.

7. The tool kit for a heat exchanger according to claim 1 , wherein the tool kit further comprises a plurality of support bolts for replacing a part of mounting bolts connected between the end cover and the end flange, so as to be connected between the end cover and the end flange when detaching all mounting bolts, where a length of the plurality of support bolts is configured so that the end cover, when supported by the support bolts, is configured to be translated along a length direction of the support bolts relative to the end flange to a position where a gap between the end cover and the end flange is at least greater than 1 cm.

8. The tool kit for a heat exchanger according to claim 7 , wherein the plurality of support bolts include at least three support bolts.

9. The tool kit for a heat exchanger according to claim 1 , wherein the tool kit further comprises a lock member configured to lock the first hinge device and the second hinge device at a position where the end cover rotates and opens for at least 120 degrees relative to the end cover flange.

10. The tool kit for a heat exchanger according to claim 9 , wherein the lock member is configured to be detachably connected to the first hinge device and the second hinge device.

11. The tool kit for a heat exchanger according to claim 9 , wherein the lock member is a U-shaped pin, and the base and the rotating member each include a lock pin hole.

12. A tool kit for a heat exchanger, wherein the heat exchanger comprises an end flange and an end cover mounted to the end flange, the tool kit comprising:
at least a first hinge device, wherein the first hinge device is configured to be mounted between the end flange and the end cover at a first position, the first hinge device comprises:
a base, configured to be fixedly connected to the end flange;
a rotating member, configured to be fixedly connected to the end cover;
a connecting member, configured to be detachably connected to the base and the rotating member, so that the rotating member is capable of rotating along the same axis relative to the base; and
an abutting bolt for passing through a threaded hole of the base to press against the edge of the end flange or to press against one or more spacers arranged between the edge of the end flange and the base.

13. The tool kit for a heat exchanger according to claim 12 , wherein the one or more spacers include an L-shaped spacer comprising a first plane portion and a second plane portion that are perpendicular to each other, where the first plane portion is arranged on the base, and the second plane portion is arranged between the base and the edge of the end flange.

14. The tool kit for a heat exchanger according to claim 12 , wherein the tool kit further comprises a plurality of support bolts for replacing a part of mounting bolts connected between the end cover and the end flange, so as to be connected between the end cover and the end flange when detaching all mounting bolts.

15. The tool kit for a heat exchanger according to claim 14 , wherein a length of the plurality of support bolts is configured so that the end cover, when supported by the support bolts, is configured to be translated along a length direction of the support bolts relative to the end flange to a position where a gap between the end cover and the end flange is at least greater than 1 cm.

16. A method for detaching an end cover of a heat exchanger, comprising:
selecting a first position and a second position on a same axis close to an edge of an end flange;
connecting bases of a first hinge device and a second hinge device to the end flange at the first position and the second position;
connecting rotating members of the first hinge device and the second hinge device to the end cover at the first position and the second position;
connecting, using connecting members, the bases and rotating members of the first hinge device and the second hinge device;
rotating the rotating members of the first hinge device and the second hinge device along with the end cover along the same axis to open the end cover; and
passing an abutting bolt through a threaded hole of the base to press against the edge of the end flange or to press against one or more spacers arranged between the edge of the end flange and the bases.

17. The method according to claim 16 , wherein the step of connecting the rotating member to the end cover further comprises:
replacing a part of mounting bolts that connect the end cover and the end flange with a plurality of support bolts, and detaching remaining mounting bolts;
translating the end cover along a length direction of the support bolts relative to the

Assignees

• Carrier Corp

Inventors

• Jin Da

Classifications

• F28F2280/105

  with hinged connections · CPC title

• F28F2275/20

  with threaded elements · CPC title

• F28F2280/02

  Removable elements · CPC title

• F28F2280/00

  Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts · CPC title

• B23P19/04 Primary

  for assembling or disassembling parts · CPC title