一种内置刮除结构的列管式换热器
By using a shell-and-tube heat exchanger with a built-in scraping structure and employing reciprocating and triggering components, efficient removal of scale from the outer wall of the tube bundle is achieved, maintaining heat exchange efficiency and solving the problem of time-consuming and labor-intensive scale removal in existing technologies.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANGZHONG SHENYANG HEAT EXCHANGE EQUIP
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-17
AI Technical Summary
During long-term operation, impurities in the flowing water in a shell-and-tube heat exchanger adhere to the outer wall of the tube bundle, forming scale, which leads to a decrease in heat exchange efficiency. Existing cleaning methods are time-consuming, labor-intensive, and incomplete.
Design a shell-and-tube heat exchanger with a built-in scraping structure. The scraper on the sleeve is driven by a reciprocating component to continuously clean the outer wall of the tube bundle. Combined with a trigger component, the scraper can be retracted and expanded to ensure that the scraper is in contact with the tube wall, remove scale and drain it in time.
It achieves simultaneous scale removal during heat exchange, maintains high-efficiency heat exchange performance, avoids the need for regular disassembly and cleaning, and reduces the difficulty and frequency of operation.
Smart Images
Figure CN224517498U_ABST
Abstract
Claims
1. A tube-in-tube heat exchanger with built-in scraping structure, comprising: The housing (1) contains two sets of tube sheets (3), and multiple sets of tube bundles (4) are equidistantly arranged between the two sets of tube sheets (3); characterized in that: Each of the tube bundles (4) is fitted with a scraping assembly. Each scraping assembly includes a sleeve (5) fitted on the tube bundle (4). Both ends of the sleeve (5) are provided with scraping structures, and a switching component is slidably provided inside the sleeve (5). The sleeve (5) is connected to a reciprocating assembly disposed in the housing (1). The reciprocating assembly includes a reciprocating member that slides in the housing (1). A triggering component is disposed on the reciprocating member. The reciprocating assembly can drive the reciprocating member to drive the sleeve (5) to reciprocate along the axial direction of the housing (1). When the reciprocating member moves to the end of its stroke, the triggering component is triggered, which can drive the switching member to move relative to the sleeve (5) so that one of the two sets of scraping structures retracts toward the tube bundle (4) and the other set expands outward from the tube bundle (4).
2. A tube-in-tube heat exchanger with built-in scraping structure according to claim 1, characterized in that, The scraping structure includes a scraper (9) rotatably mounted on the sleeve (5). Multiple sets of scrapers (9) are equidistantly arranged along the circumferential direction of the sleeve (5). Each set of scrapers (9) is connected to the sleeve (5) through a spring piece (15).
3. A tube-in-tube heat exchanger with built-in scraping structure according to claim 2, characterized in that, The switching component includes a movable sleeve (10), which is slidably connected to the sleeve (5) and coaxial with the sleeve (5) and the tube bundle (4).
4. A tube-in-tube heat exchanger with built-in scraping structure according to claim 3, characterized in that, The reciprocating component includes a reciprocating plate (8) slidably disposed in the housing (1), the reciprocating plate (8) having a groove (801) on the side facing the toothed belt (6), and the sleeve (5) being fixedly connected to the reciprocating plate (8).
5. A tube-in-tube heat exchanger with built-in scraping structure according to claim 4, characterized in that The reciprocating assembly also includes a synchronous pulley (7) rotatably installed in the housing (1). Two sets of synchronous pulleys (7) are rotatably arranged along the axial direction of the housing (1). A toothed belt (6) is provided between the two sets of synchronous pulleys (7). A slide rod (601) is provided on the toothed belt (6). The slide rod (601) is slidably arranged in the slide groove (801).
6. A shell-and-tube heat exchanger with a built-in scraping structure according to claim 4, characterized in that, The triggering component includes a deflection structure and an elastic structure. The deflection structure includes a deflection rod (14) rotatably mounted on the reciprocating plate (8). A moving groove (1401) is provided on the deflection rod (14). A fixed rod (1001) that is fixedly connected to the moving sleeve (10) is slidably arranged in the moving groove (1401).
7. A tube-in-tube heat exchanger with built-in scraping structure according to claim 6, characterized in that The elastic structure includes a deflection sleeve (11) rotatably mounted on the reciprocating plate (8). A spring (12) is provided inside the deflection sleeve (11). One end of the spring (12) abuts against the deflection sleeve (11), and the other end abuts against the insertion rod (13) inserted into the deflection sleeve (11). The end of the insertion rod (13) away from the spring (12) is rotatably connected to the deflection rod (14).