Detachable anti-impact rod and heat exchanger
By designing a detachable anti-impact rod with a bolt connection, the problem of difficult replacement and cleaning of the traditional welding method is solved, realizing the detachability and thorough cleaning of the anti-impact rod and improving the performance of the heat exchanger.
Patent Information
- Application Number
- CN202422745858.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-12
AI Technical Summary
Traditional welded anti-impact rods are difficult to replace and clean, easily damaging heat exchange tubes and failing to clean thoroughly, thus affecting heat exchanger performance.
The detachable anti-impact rod adopts a bolt connection, which achieves the detachable connection of the rod body through external threads, nuts and shoulder structure, and ridges are set on the rod body to reduce the medium flow rate. Combined with the pad design, the fastening effect is ensured.
This design enables the anti-impact rod to be detachable and thoroughly cleaned, reducing the risk of damage to the heat exchange tubes and improving the performance of the heat exchanger.
Smart Images
Figure CN223538176U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of heat exchanger accessory manufacturing technology, specifically a detachable anti-impact rod and a heat exchanger. Background Technology
[0002] Anti-erosion bars are a common structure in heat exchangers, designed to prevent the medium from directly eroding the heat exchange tubes from the inlet, thus avoiding damage and destruction. The conventional structure involves welding both ends to baffles; however, conventional anti-erosion bars have the following disadvantages:
[0003] 1. Due to the welded connection at both ends, replacing the damaged anti-impact rod is difficult. Therefore, there is a risk that damage to the heat exchange tube may occur if the anti-impact rod is damaged.
[0004] 2. When cleaning the tube bundle, a cleaning dead zone will be generated in the anti-impact rod and the heat exchange tubes near the anti-impact rod, resulting in incomplete cleaning and affecting the performance of the heat exchanger. Utility Model Content
[0005] The purpose of this application is to address the shortcomings of existing technologies by designing a detachable anti-impact rod and heat exchanger. The traditional welded anti-impact rod is replaced with a bolted connection, which solves the problem of cleaning dead angles in the traditional welded anti-impact rod. It has the advantages of detachable structure, convenient cleaning, and replaceability.
[0006] To achieve the above objectives, this application provides the following technical solution:
[0007] A detachable anti-impact bar includes a bar body, both ends of which are provided with a connecting locking structure.
[0008] Preferably, the connecting locking structure includes an external thread, a nut, and a shoulder. Two shoulders are provided between the two ends of the rod body, and a preset distance is provided between the two shoulders. The external thread that mates with the nut is provided on the opposite side of the two shoulders on the rod body.
[0009] Preferably, a plurality of protrusions are provided on the outer surface of the rod body between the two shoulders, and the protrusions are parallel to the axis of the rod body.
[0010] Preferably, each end of the rod body is provided with two nuts.
[0011] A heat exchanger in which a rod body is disposed within a medium inlet, the rod body being perpendicular to the inlet direction of the medium.
[0012] Preferably, the heat exchanger baffle plate is provided with a through hole that mates with the end of the rod body. The baffle plates are located on opposite sides of the medium inlet. The inner diameter of the through hole is smaller than the outer diameter of the nut and larger than the diameter of the end of the rod body. Each end of the rod body is inserted into a through hole on the baffle plate. The nut is provided on the side of the baffle plate opposite to the shoulder.
[0013] Preferably, a washer is provided between the baffle plate and the nut, and the washer has a through hole, through which the end of the rod body passes.
[0014] Compared with the prior art, the beneficial effects of this application are as follows:
[0015] This application presents a detachable anti-impact rod that replaces the traditional welded anti-impact rod with a bolted connection, solving the problem of cleaning dead spots in the traditional welded anti-impact rod. It has the advantages of detachable structure, convenient cleaning, and replaceability. Attached Figure Description
[0016] Figure 1 A schematic diagram showing the anti-impact rod installed inside the heat exchanger;
[0017] Figure 2 Diagram showing the relationship between the anti-impact rod and the baffle.
[0018] The components are: 1. Rod body; 2. Nut; 3. Shoulder; 4. Rack; 5. Baffle; 6. Heat exchanger; 7. Medium inlet; 8. Heat exchange tube; 9. Gasket. Detailed Implementation
[0019] like Figures 1 to 2 As shown, a detachable anti-impact rod includes a rod body 1, and both ends of the rod body 1 are provided with connecting and locking structures.
[0020] In this embodiment, during use, the rod body 1 is fixed to the medium inlet 7 of the heat exchanger 6 by a locking structure, and the rod body 1 is perpendicular to the axis of the medium inlet 7. This can reduce the flow rate of the medium. When the rod body 1 is damaged, it can be easily replaced, reducing the risk of the rod body 1 causing damage to the heat exchange tube 8.
[0021] Because the structure is detachable, no cleaning dead zone will be generated in the heat exchange tubes 8 in and around the rod body 1 during cleaning of the tube bundle. It can be thoroughly cleaned and the performance of the heat exchanger 6 will not be affected by incomplete cleaning.
[0022] As a preferred embodiment, the connecting locking structure includes an external thread, a nut 2, and a shoulder 3. Two shoulders 3 are provided between the two ends of the rod body 1, with a predetermined distance between them. The rod body 1 has external threads on the opposite sides of each of the two shoulders 3 that mate with the nut 2. With this configuration, after the rod body 1 is installed, the shoulders 3 are located on one side of the baffle plate 5, and the nut 2 is located on the other side of the baffle plate 5, thereby locking the end of the rod body 1 onto the baffle plate 5.
[0023] As a preferred embodiment, a plurality of protrusions 4 are provided on the outer surface of the rod body 1 between the two shoulders 3, and the protrusions 4 are parallel to the axis of the rod body 1. This arrangement of the protrusions 4 increases the surface roughness of the rod body 1, thereby reducing the flow velocity of the medium within the heat exchanger 6. Furthermore, the protrusions 4 must be parallel to the axis of the rod body 1 for optimal effect, because this arrangement maximizes the area of the projected area of the protrusions 4 on a plane perpendicular to the flow direction of the medium at the medium inlet 7.
[0024] As a preferred embodiment, each end of the rod body 1 is provided with two nuts 2. By providing two nuts 2, the locking effect is improved.
[0025] A heat exchanger 6 has a rod body 1 disposed within a medium inlet 7, the rod body 1 being perpendicular to the inlet direction of the medium inlet 7. This arrangement reduces the flow velocity of the medium within the heat exchanger 6, allowing the medium sufficient residence time for heat exchange.
[0026] As a preferred embodiment, the baffle plate 5 of the heat exchanger 6 is provided with a through hole that mates with the end of the rod body 1. The baffle plate 5 is located on both sides opposite to the medium inlet 7. The inner diameter of the through hole is smaller than the outer diameter of the nut 2 and larger than the diameter of the end of the rod body 1. Each end of the rod body 1 is inserted into a through hole on one of the baffle plates 5. The nut 2 is located on the side of the baffle plate 5 facing away from the shoulder 3 at the end of the rod body 1. After this arrangement, after the end of the rod body 1 is inserted into the through hole, the nut 2 is threadedly connected to the rod body 1 on the side of the baffle plate 5 facing away from the shoulder 3, thereby locking the rod body 1.
[0027] As a preferred method, since the diameter of the end of the rod body 1 is smaller than the inner diameter of the through hole on the baffle plate 5, a pad 9 is provided between the baffle plate 5 and the nut. The pad 9 has a through hole, and the end of the rod body 1 passes through the through hole. This pad 9 is provided to prevent loose fastening.
Claims
1. A detachable anti-impact bar, comprising a bar body (1), characterized in that, Both ends of the rod body (1) are provided with a connecting locking structure; The connecting locking structure includes an external thread, a nut (2), and a shoulder (3). Two shoulders (3) are provided between the two ends of the rod body (1). There is a preset distance between the two shoulders (3). The external thread that cooperates with the nut (2) is provided on the opposite side of the two shoulders (3) on the rod body (1).
2. The detachable anti-impact bar according to claim 1, characterized in that: On the outer surface of the rod body (1), there are several protrusions (4) between the two shoulders (3), and the protrusions (4) are parallel to the axis of the rod body (1).
3. A detachable anti-impact bar according to claim 2, characterized in that: Two nuts (2) are provided at each end of the rod body (1).
4. A heat exchanger, characterized in that: The heat exchanger (6) is provided with a detachable anti-impact rod as described in any one of claims 1-3 in the medium inlet (7), and the rod body (1) of the detachable anti-impact rod is perpendicular to the entry direction of the medium inlet (7).
5. A heat exchanger according to claim 4, characterized in that: The heat exchanger (6) has a baffle plate (5) with a through hole that matches the end of the rod body (1). The baffle plate (5) is located on both sides opposite to the medium inlet (7). The inner diameter of the through hole is smaller than the outer diameter of the nut (2) and larger than the diameter of the end of the rod body (1). Both ends of the rod body (1) are inserted into the through hole on the baffle plate (5). The end of the rod body (1) is provided with the nut (2) on the side of the baffle plate (5) facing away from the shoulder.
6. A heat exchanger according to claim 5, characterized in that: A washer (9) is provided between the baffle plate (5) and the nut. The washer (9) has a through hole, and the end of the rod body (1) passes through the through hole.