管壳式换热器
By setting a liquid separator head on the outside of the heat exchanger body and connecting it to the inlet channel using a capillary tube, the problems of capillary tube bending and uneven flow velocity in traditional shell-and-tube heat exchangers are solved, achieving more efficient liquid separation and heat exchange effects, and improving the sealing performance and service life of the liquid separator assembly.
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
Traditional shell-and-tube heat exchangers have numerous capillary bends in their liquid distribution components due to space constraints, resulting in uneven flow velocity and flow resistance. This poses risks of flash evaporation and liquid freezing, affecting the uniformity of liquid distribution and heat exchange efficiency.
The liquid separator is placed outside the heat exchanger body and connected to the inlet channel through a capillary tube to achieve liquid separation, reducing the internal space occupation. The gap is sealed with a plugging component to ensure that the capillary tube is arranged on the outside, avoiding bending and mess, and improving the uniformity of flow velocity and flow resistance.
It improves the sealing performance and service life of the liquid separation component, enhances the overall performance of the heat exchanger, ensures uniform flow rate and flow resistance, improves heat exchange efficiency and liquid separation effect, and avoids the impact of internal impact on the capillary tube.
Smart Images
Figure CN224517484U_ABST
Abstract
Claims
1. A shell and tube heat exchanger, characterized in that, The shell-and-tube heat exchanger includes a heat exchange body (10) and a liquid distribution assembly (30). The heat exchange body (10) has a first heat exchange chamber (101) and a second heat exchange chamber (102) for intermittent heat exchange. The second heat exchange chamber (102) has an inlet channel (102221) formed on one side of the heat exchange body (10). The liquid distribution assembly (30) includes a liquid distribution head (31) and a capillary tube (32). The liquid distribution head (31) is disposed on one side of the heat exchange body (10) and is located outside the heat exchange body (10). One end of the capillary tube (32) is connected to the liquid distribution head (31), and the other end of the capillary tube (32) is connected to the inlet channel (102221).
2. The shell and tube heat exchanger of claim 1, wherein, The other end of the capillary tube (32) extends into the inlet channel (102221). The liquid separation assembly (30) also includes a sealing element (33). The outer periphery of the end of the capillary tube (32) extending into the inlet channel (102221) is in clearance fit with the inner wall of the inlet channel (102221). The sealing element (33) is disposed between the outer periphery of the end of the capillary tube (32) extending into the inlet channel (102221) and the inner wall of the inlet channel (102221) to seal the gap.
3. The shell and tube heat exchanger of claim 2, wherein, The heat exchange body (10) includes a heat exchange tube assembly located inside it and a cover assembly (13) disposed on one side thereon. The heat exchange tube assembly and the cover assembly (13) are connected, and their cavities together form the second heat exchange cavity (102). The cover assembly (13) has a transition hole (1301), and the heat exchange tube assembly has an inlet section (121) adapted to the transition hole (1301). The transition hole (1301), through which the inlet section (121) extends, forms the inlet channel (102221). The inlet section (121) extends into the adapter hole (1301) and its end is located inside the adapter hole (1301). The cavity of the inlet section (121) inside the adapter hole (1301) and the cavity of the adapter hole (1301) without the inlet section (121) together form the inlet channel (102221). The end of the capillary (32) extends into the adapter hole (1301) and into the inlet section (121), and the sealing member (33) extends at least partially into the inlet section (121) and its outer periphery is adapted to the inner wall of the cavity of the inlet section (121). Alternatively, the end of the capillary (32) extends into the transition hole (1301) without the inlet section (121) passing through it, and the sealing member (33) extends at least partially into the transition hole (1301) without the inlet section (121) passing through it, and its outer periphery is adapted to the inner wall of the cavity of the transition hole (1301).
4. The shell and tube heat exchanger of claim 3, wherein, The heat exchange body (10) further includes a heat exchange cylinder (11), which has an opening on one side in the axial direction. The sealing assembly (13) includes a sealing plate (131) disposed at the opening and a limiting cover plate (133) fastened to the side of the sealing plate (131) away from the heat exchange cylinder (11). The transition hole (1301) penetrates the sealing plate (131) and the limiting cover plate (133). The transition hole (1301) includes a first hole segment formed on the sealing plate (131) and a second hole segment formed on the limiting cover plate (133). The second hole section on the heat exchange tube assembly (121) has a radial dimension smaller than that of the first hole section. The inlet section (121) of the heat exchange tube assembly extends into the first hole section and is stopped by the limiting cover plate (133). The capillary tube (32) passes through the second hole section and its end is located inside the first hole section. The sealing member (33) fixedly sleeved on the outer periphery of the capillary tube (32) extends into the first hole section through the second hole section. The outer periphery of the sealing member (33) is adapted to the inner wall of the cavity of the second hole section.
5. The shell-and-tube heat exchanger according to claim 4, characterized in that, One end of the sealing member (33) extends into the first hole section, and the other end of the sealing member (33) is flush with the end of the second hole section away from the first hole section; Alternatively, the sealing member (33) includes a sealing section and a stop section connected to each other, the outer diameter of the stop section is larger than the outer diameter of the sealing section, the sealing section passes through the second hole section and its outer periphery is adapted to the inner wall of the cavity of the second hole section, and the side of the stop section facing the sealing section is in contact with the surface of the limiting cover plate (133) opposite to the sealing plate (131).
6. The shell and tube heat exchanger of claim 2, wherein, The heat exchange body (10) includes a heat exchange tube assembly located inside it and a cover assembly (13) disposed on one side thereon. The heat exchange tube assembly and the cover assembly (13) are connected, and their cavities together form the second heat exchange cavity (102). The cover assembly (13) has a transition hole (1301), and the heat exchange tube assembly has an inlet section (121) adapted to the transition hole (1301). The transition hole (1301), through which the inlet section (121) extends, forms the inlet channel (102221). The inlet section (121) extends into the adapter hole (1301) and its end is flush with the other end of the adapter hole (1301). The cavity of the inlet section (121) located in the adapter hole (1301) forms the inlet channel (102221). The capillary tube (32) extends into the inlet section (121). The sealing member (33) extends at least partially into the inlet section (121) and its outer periphery is adapted to the inner wall of the cavity of the inlet section (121).
7. The shell and tube heat exchanger of claim 6, wherein, The heat exchange body (10) also includes a heat exchange cylinder (11), which has an opening on one side in the axial direction. The sealing assembly (13) includes a sealing plate (131) disposed at the opening and a limiting cover plate (133) embedded in the sealing plate (131). The heat exchange tube group is located inside the heat exchange cylinder (11). The cavity surrounded by the heat exchange cylinder (11) and the sealing plate (131) forms the first heat exchange cavity (101). The limiting cover plate (133) has a through-hole (1301) with a constant inner diameter. The inlet section (121) of the heat exchange tube group and the capillary tube (32) pass through from both ends of the connecting hole (1301).
8. The shell and tube heat exchanger of claim 7, wherein, The sealing member (33) includes a sealing section and a stop section connected to each other. The outer diameter of the stop section is larger than the outer diameter of the sealing section. The outer periphery of the sealing section passes through the transition hole (1301) and is adapted to the inner wall of the cavity of the transition hole (1301). The side of the stop section facing the sealing section is in contact with the surface stop of the sealing plate (131) on the side away from the heat exchange tube group.
9. The shell and tube heat exchanger of claim 4 or 7, wherein, The capillary tube (32) extends into the sealing plate (131) to a depth of 5mm-50mm.
10. The shell and tube heat exchanger of claim 7, wherein, There are multiple capillaries (32) and multiple inlet channels (102221). At least one capillary (32) extends into any one of the inlet channels (102221). At least some of the capillaries (32) extend into the sealing plate (131) to the same depth, or the depths of multiple capillaries (32) extending into the sealing plate (131) are different from each other.
11. The shell and tube heat exchanger of claim 10, wherein, The multiple capillaries (32) are parallel to each other, and one capillary (32) is inserted into each of the inlet channels (102221).
12. The shell-and-tube heat exchanger according to claim 2, characterized in that, The sealing component (33) is a sleeve fixedly sleeved on the outer periphery of the capillary tube (32), and the sleeve is interference-fitted with the inner wall of the inlet channel (102221); Alternatively, the sealing element (33) may be a sealing ring fixedly sleeved on the outer periphery of the capillary tube (32), and the sealing ring may be in sealing fit with the inner wall of the inlet channel (102221).
13. The shell and tube heat exchanger of claim 2, wherein, The capillary tube (32) is coaxial with the inlet channel (102221), or the axis of the capillary tube (32) is parallel to and spaced apart from the axis of the inlet channel (102221).
14. The shell and tube heat exchanger of claim 1, wherein, The projections of the capillary tube (32) along the length of the heat exchange body (10) do not overlap.
15. The shell and tube heat exchanger of claim 1, wherein, There are multiple capillaries (32), and the multiple capillaries (32) do not cross each other.
16. The shell and tube heat exchanger of claim 1, wherein, The length of the capillary (32) is 30mm-200mm; and / or, the second heat exchange cavity (102) further has an outlet channel (102222) formed on one side of the heat exchange body (10), and the shell-and-tube heat exchanger further comprises a header assembly (20) in communication with the outlet channel (102222), and the first heat exchange cavity (101) has an inflow channel and an outflow channel formed on the outer periphery of the heat exchange body (10).