管壳式换热器
By designing spaced heat exchange chambers and meandering flow channels in shell-and-tube heat exchangers, the travel distance of the heat exchange medium within the flow channels is extended, solving the problem of insufficient heat exchange and improving heat exchange performance and uniformity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU SAFETY EQUIP
- Filing Date
- 2025-06-09
- Publication Date
- 2026-07-17
AI Technical Summary
The design of existing shell-and-tube heat exchangers results in a short residence time for the heat exchange medium during the heat exchange process, which can easily lead to insufficient heat exchange and affect the overall heat exchange efficiency.
The design employs a first and second heat exchange chamber with intermittent heat exchange. The second heat exchange chamber is equipped with multiple meandering flow channels, which are connected by a transfer chamber to extend the travel of the heat exchange medium within the flow channels. Furthermore, the heat exchange area and time are increased through U-shaped or S-shaped flow channels.
By extending the travel distance of the heat exchange medium within the flow channel, the heat exchange area and time are increased, thus avoiding insufficient heat exchange and improving the heat exchange performance and uniformity of the shell-and-tube heat exchanger.
Smart Images
Figure CN224517485U_ABST
Abstract
Claims
1. A shell and tube heat exchanger, characterized in that, The shell-and-tube heat exchanger has a first heat exchange chamber (101) and a second heat exchange chamber (102) for spaced heat exchange. At least a portion of the second heat exchange chamber (102) is disposed in the first heat exchange chamber (101). The second heat exchange chamber (102) includes a plurality of meandering channels (1022). Each meandering channel (1022) includes a transition chamber (10221) and a plurality of sub-channels (10222). The plurality of sub-channels (10222) of the plurality of meandering channels (1022) are spaced apart in the first heat exchange chamber (101). The plurality of sub-channels (10222) of any one meandering channel (1022) are connected end to end in sequence through the transition chamber (10221). At least a portion of the transition chambers (10221) of the meandering channels (1022) are the same transition chamber (10221).
2. The shell-and-tube heat exchanger according to claim 1, characterized in that, The sub-channel (10222) is a U-shaped channel with a U-shaped extension direction. The ports of the multiple U-shaped channels are distributed in layers along the outer peripheral axis of the first heat exchange cavity (101). Both ends of any U-shaped channel are located in the same layer. One end of any U-shaped channel is connected to one end of the U-shaped channel located in the adjacent layer through the transition cavity (10221). Alternatively, the sub-channel (10222) is a U-shaped channel extending in a U-shape. The ports of the multiple U-shaped channels are distributed in layers along the outer peripheral axis of the first heat exchange cavity (101). The two ends of any one U-shaped channel are located in different layers, and any two adjacent U-shaped channels are connected through the transition cavity (10221) to form the meandering channel (1022).
3. The shell and tube heat exchanger of claim 1, wherein, At least some of the sub-channels (10222) of the meandering channel (10222) are the same sub-channel (10222).
4. The shell and tube heat exchanger of claim 1, wherein, The meandering flow channel (1022) includes one transition cavity (10221) and two sub-flow channels (10222). The transition cavity (10221) is a group of flow channels formed by a portion of the meandering flow channels (1022) within the same transition cavity (10221). There are at least two flow channel groups, which are symmetrically distributed on both sides of the plane containing the axis of the shell-and-tube heat exchanger.
5. The shell-and-tube heat exchanger according to claim 1, characterized in that, The sub-channel (10222) is a U-shaped channel extending in a U-shape, or an S-shaped channel extending in an S-shape, or a straight channel extending in a linear direction. And / or, the sub-channel (10222) extends in a wavy shape.
6. The shell and tube heat exchanger of claim 1, wherein, The shell-and-tube heat exchanger includes a heat exchange body (10), which includes a heat exchange cylinder (11), a plurality of U-tubes (12), and a capping assembly (13). Both ends of any one of the U-tubes (12) are connected to the capping assembly (13). The cavity of the U-tube (12) forms the sub-channel (10222). The capping assembly (13) is disposed on one side of the heat exchange cylinder (11). The heat exchange cylinder (11) and the capping assembly (13) surround each other to form the first heat exchange cavity (101). The plurality of U-tubes (12) are disposed in the first heat exchange cavity (101) and together with the cavity of the capping assembly (13) form the second heat exchange cavity (102) including the plurality of meandering channels (1022). The transition cavity (10221) is formed in the capping assembly (13).
7. The shell-and-tube heat exchanger according to claim 6, characterized in that, The sealing assembly (13) includes a sealing plate (131) and a flow guide plate (132). The sealing plate (131) is fixedly disposed on one side of the heat exchange cylinder (11) and has a transition groove on the side away from the heat exchange cylinder (11). The sealing plate (131) is provided with a plurality of transition holes (1301) for passing through the end of the U-shaped tube (12). One end of some of the transition holes (1301) is formed at the bottom of the transition groove. The flow guide plate (132) is fastened to the side of the sealing plate (131) away from the heat exchange cylinder (11). The flow guide plate (132) blocks the opening of the transition groove and forms the transition cavity (10221). Alternatively, the sealing assembly (13) includes a sealing plate (131) and a flow guide plate (132). The sealing plate (131) is fixedly disposed on one side of the heat exchange cylinder (11) and has a plurality of transition holes (1301) for passing through the end of the U-shaped tube (12). The flow guide plate (132) is fastened to the side of the sealing plate (131) away from the heat exchange cylinder (11). The side of the flow guide plate (132) facing the sealing plate (131) has a transition groove that covers part of the transition holes (1301). The sealing plate (131) blocks the opening of the transition groove and forms the transition cavity (10221).
8. The shell and tube heat exchanger of claim 7, wherein, Along the length direction of the adapter hole (1301) inserted into the end of the U-tube (12), at least part of the diameter of the adapter hole (1301) is adapted to the outer wall size of the U-tube (12).
9. The shell and tube heat exchanger of claim 8, wherein, The diameter of at least a portion of the adapter hole (1301) is gradually varied along the axial direction of the adapter hole (1301), and / or, the outer wall dimension of at least a portion of the U-tube (12) is gradually varied along the axial direction of the U-tube (12).
10. The shell and tube heat exchanger of claim 6, wherein, The shell-and-tube heat exchanger also includes a manifold assembly (20) and a liquid distribution assembly (30), with the two ends of the meandering flow channel (1022) connected to the manifold assembly (20) and the liquid distribution assembly (30), respectively.