Tubular cooler
Through the tube cooler designed with double-layer cylinder and flow guide window, the vibration problems caused by high-flow cooling water are solved, and the effect of efficient cooling and material saving is achieved.
Patent Information
- Application Number
- CN202422250042.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-13
AI Technical Summary
Existing tube coolers are prone to vibrating under the impact of high flow cooling water, causing fatigue damage to the pipe. Conventional vibration-resistant measures affect cooling efficiency, low material utilization, and high design cost.
The double-layer cylinder structure and flow guide window design are adopted. The cooling water enters the shell vertically after passing through the mezzanine space, reducing direct impact of the water flow, and combining with the disc/ring baffle plate to avoid vibration and improve space utilization.
Effectively prevent vibration damage of cooling pipes, improve cooling efficiency, reduce material consumption and design costs.
Smart Images
Figure CN223077521U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a cooler, in particular to a tubular cooler. Background Art
[0002] Synthetic gas is produced by the method of gasifying solid raw materials. The made crude raw material gas containing hydrogen and nitrogen is subjected to conversion and purification treatment. The converted gas needs to be quickly cooled with water. A U-shaped tube heat exchanger is selected. The converted gas flows through the tube side, and water flows through the shell side.
[0003] To achieve the effect of rapid cooling, the required cooling water flow rate and flow velocity are very large. The diameter of the water inlet is DN400. Inevitably, the cooling tubes at the water inlet are impacted, causing vibration of the tube bundle. Eventually, cyclic alternating stress is generated in the tubes, resulting in fatigue failure. Therefore, anti-vibration measures should be fully considered in the design of the cooler. For the above problems, the conventional methods are: no tubes are arranged in the window and an anti-impulse baffle is set, that is, several rows of tubes with large vibration energy closest to the water inlet are removed. However, since the number of cooling tubes is reduced, the cooling area is directly reduced, the leakage flow rate is increased, and the cooling efficiency is affected; the diameter of the shell side cylinder is large, and the wall thickness of the shell side cylinder increases under the internal pressure, resulting in low space utilization rate and more material consumption; due to the uneven and asymmetric tube arrangement on the tube sheet, the large bow-shaped non-tube area cannot be supported by the tubes, resulting in that the strength of the tube sheet cannot be calculated according to the conventional method, and numerical simulation analysis is required, with high design cost. Content of the Utility Model
[0004] To solve the above problems, the utility model provides a tubular cooler.
[0005] The technical solution of the utility model is as follows:
[0006] A tubular cooler, characterized in that the shell side cylinder of the tubular cooler is a double-layer cylinder structure, including an outer large-diameter cylinder and an inner small-diameter cylinder. There is an interlayer space between the outer large-diameter cylinder and the inner small-diameter cylinder. A diversion window is also arranged on the inner small-diameter cylinder. The diversion window communicates the interlayer space with the shell side space of the tubular cooler. The cooling water inlet of the tubular cooler is arranged on the outer large-diameter cylinder, and the cooling water outlet of the tubular cooler is arranged on the inner small-diameter cylinder;
[0007] During use, the cooling water first enters the interlayer space and then enters the shell side space of the tubular cooler through the diversion window. The diversion window is perpendicular to the axis of the cooling water inlet of the tubular cooler, reducing the direct impact of the water flow on the cooling tubes.
[0008] The tubular cooler is a U-shaped tubular cooler.
[0009] The end of the outer large-diameter cylinder is connected to the tube sheet of the tube cooler, and there is a gap between the end of the inner small-diameter cylinder and the tube sheet of the tube cooler; this avoids the formation of a pressure difference and axial constraint.
[0010] The baffle installed in the shell-side space of the tube cooler is of the disc / ring type.
[0011] The advantages of the present utility model are reasonable design, simple structure, reducing the direct impact of water flow on the cooling tubes, avoiding the damage of tubes caused by fluid-induced vibration; avoiding the corresponding problems brought by the non-piping of the window and the setting of the impact baffle. Description of the Drawings
[0012] Figure 1 It is a schematic structural diagram of a U-tube cooler.
[0013] In the figure, the shell-side cylinder 1 of the tube cooler, the outer large-diameter cylinder 1-1, the inner small-diameter cylinder 1-2, the interlayer space 1-3, the diversion window 1-4, the shell-side space 2 of the tube cooler, the cooling water inlet 3 of the tube cooler, the cooling water outlet 4 of the tube cooler, the baffle 5, and the tube sheet 6 of the tube cooler. Detailed Implementation Manner
[0014] As shown in the figure, a U-tube cooler, the shell-side cylinder 1 of the tube cooler is a double-cylinder structure, including an outer large-diameter cylinder 1-1 and an inner small-diameter cylinder 1-2. There is an interlayer space 1-3 between the outer large-diameter cylinder 1-1 and the inner small-diameter cylinder 1-2. A diversion window 1-4 is provided on the inner small-diameter cylinder 1-2, and the diversion window 1-4 communicates the interlayer space 1-3 with the shell-side space 2 of the tube cooler. The cooling water inlet 3 of the tube cooler is provided on the outer large-diameter cylinder 1-1, and the cooling water outlet 4 of the tube cooler is provided on the inner small-diameter cylinder 1-2. The diversion window 1-4 is perpendicular to the axis of the cooling water inlet 3 of the tube cooler; the baffle 5 installed in the shell-side space 2 of the tube cooler is of the disc / ring type; the front end of the outer large-diameter cylinder 1-1 is connected (welded) to the tube sheet 6 of the tube cooler, and there is a gap between the front end of the inner small-diameter cylinder 1-2 and the tube sheet 6 of the tube cooler.
[0015] The above is only the preferred detailed implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.
Claims
1. A tube cooler, characterized in that, The shell-side cylinder body of the tubular cooler is a double-cylinder structure, including an outer large-diameter cylinder body and an inner small-diameter cylinder body. There is an interlayer space between the outer large-diameter cylinder body and the inner small-diameter cylinder body. A diversion window is also provided on the inner small-diameter cylinder body. The diversion window communicates the interlayer space with the shell-side space of the tubular cooler. The cooling water inlet of the tubular cooler is arranged on the outer large-diameter cylinder body, and the cooling water outlet of the tubular cooler is arranged on the inner small-diameter cylinder body; The diversion window is perpendicular to the axis of the cooling water inlet of the tubular cooler.
2. The tubular cooler according to claim 1, characterized in that, The tubular cooler is a U-shaped tubular cooler.
3. The tube cooler according to claim 2, wherein, The end of the outer large-diameter cylinder body is connected to the tube sheet of the tubular cooler, and there is a gap between the end of the inner small-diameter cylinder and the tube sheet of the tubular cooler.
4. The tubular cooler according to claim 2, characterized in that, The baffle plate installed in the shell-side space of the tubular cooler is of a disc / ring type.