Brazing heat exchanger capable of preventing pipeline leakage
By setting an arc-shaped flange and a fixed wrench position on the outside of the medium hole of the brazed heat exchanger, and adding a reinforcing ring at the root of the pipe, the leakage problem caused by excessive bending moment or torque is solved, achieving higher connection tightness and strength, and preventing pipeline leakage.
Patent Information
- Application Number
- CN202520415230.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-11
AI Technical Summary
During the installation of brazed heat exchangers, excessive bending or torque can damage the welded area at the root of the pipe, leading to leakage problems after prolonged operation.
An arc-shaped flange is provided on the outside of the medium hole of the brazed heat exchanger and expanded by brazing with copper sheet. A fixed wrench position is provided at the top of the pipe to reduce the stress on the thread, and a reinforcing ring is provided at the root of the pipe to enhance the strength.
The design of the arc-shaped flange and the fixed wrench position enhances the tightness of the connection between the pipe and the heat exchanger, reduces the risk of leakage, improves the welding strength at the root of the pipe, and avoids leakage.
Smart Images
Figure CN223869873U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a brazed heat exchanger for preventing pipeline leakage. Background Technology
[0002] Brazed heat exchangers are a type of high-efficiency and energy-saving heat exchange equipment, boasting advantages such as high heat transfer efficiency, light weight, and small footprint. The heat exchange medium inlet of a brazed heat exchanger requires a connecting pipe to allow the introduction of hot and cold media. External pipes typically use threaded sealing connectors, which need to be tightened during installation to ensure a seal.
[0003] However, in some applications, the bending moment or torque during the installation and connection of the heat exchanger pipes is too large, which causes the heat exchanger pipes and pipes to be subjected to excessive stress at the same time. The welded position at the root of the pipe is prone to damage. After a period of oil cooling and hot operation, the root of the pipe is completely loosened, resulting in leakage. Utility Model Content
[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a brazed heat exchanger with good safety and high strength to prevent pipeline leakage.
[0005] The purpose of this utility model is achieved as follows:
[0006] A brazed heat exchanger for preventing pipeline leakage has stacked plates in the middle. The front end of each plate is provided with a front plate and the rear end is provided with a rear plate. The front and rear plates press and fix the middle plates together. The four corners of the rear plate are provided with medium holes. The outer side of each medium hole is provided with an arc-shaped flange. The top outer side of the connecting pipe is symmetrically provided with two fixing wrench positions, which are flat.
[0007] The flange is expanded and brazed to the connecting pipe by a copper sheet.
[0008] A reinforcing ring is provided at the root of the connector.
[0009] Compared with the prior art, the beneficial effects of this utility model are:
[0010] This type of brazed heat exchanger, designed to prevent pipeline leaks, features a rounded flange on the outer side of the medium hole, ensuring a tight and secure connection between the connector and the heat exchanger end plate. Furthermore, a fixed wrench position is provided on the top outer side of the connector for securing it with a wrench during thread tightening, reducing stress on the threads and thus preventing leaks. A reinforcing ring is also installed at the root of the connector, increasing the weld surface area and strengthening it to further prevent leaks. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the brazed heat exchanger for preventing pipeline leakage according to this utility model.
[0012] Figure 2 for Figure 1 A schematic diagram of the front structure.
[0013] Figure 3 for Figure 1 Enlarged view of the connection between the medium port and the connecting pipe.
[0014] The components include: 1. Plate; 2. Front end plate; 3. Rear end plate; 4. Medium hole; 5. Flanged edge; 6. Connecting pipe; 7. Fixed wrench position; 8. Reinforcing ring. Detailed Implementation
[0015] See Figures 1 to 3 This utility model relates to a brazed heat exchanger for preventing pipeline leakage. The heat exchanger has stacked plates 1 in the middle. A front plate 2 is provided at the front end of the plate 1 and a rear plate 3 is provided at the rear end. The front plate 2 and the rear plate 3 press and fix the middle plate 1. Medium holes 4 are provided at the four corners of the rear plate 3.
[0016] An arc-shaped flange 5 is provided on the outer side of the medium hole 4. The flange 5 is brazed and expanded to the connecting pipe 6 by a copper sheet. The arc-shaped flange 5 makes the connection between the connecting pipe 6 and the heat exchanger end plate tight and firm, while the melting of the copper sheet plays a secondary reinforcement and sealing role.
[0017] Two fixed wrench positions 7 are symmetrically arranged on the top outer side of the connector 6. The fixed wrench positions 7 are two short planes used to fix the connector with a wrench during the thread tightening process, thereby reducing the force on the thread of the connector 6 and thus preventing leakage.
[0018] Furthermore, a reinforcing ring 8 is provided at the root of the connector 6, which increases the welding surface at the root of the connector 6, enhances its strength, and prevents leakage.
Claims
1. A brazed heat exchanger for preventing pipeline leaks, characterized by: The heat exchanger has stacked plates (1) in the middle. The front end of the plate (1) is provided with a front plate (2) and the rear end is provided with a rear plate (3). The front plate (2) and the rear plate (3) press and fix the middle plate (1). The four corners of the rear plate (3) are provided with medium holes (4). The outer side of the medium hole (4) is provided with an arc-shaped flange (5). The flange (5) is brazed and expanded to the connecting pipe (6) by copper sheet. The top outer side of the connecting pipe (6) is symmetrically provided with two fixed wrench positions (7). The fixed wrench positions (7) are flat.
2. The brazed heat exchanger for preventing pipeline leakage according to claim 1, characterized in that: A reinforcing ring (8) is provided at the root of the connector (6).