CN-224215891-U - Shell-and-tube heat exchanger avoiding mixed liquid caused by poor manufacturing

Abstract

The utility model relates to the technical field of heat exchange equipment, in particular to a shell-and-tube heat exchanger for avoiding liquid mixing caused by poor manufacturing. According to the utility model, the U-shaped tube formed integrally is adopted by the assembling mechanism, a sealed cavity is formed with the shell and tube type heat exchanger shell and the heat exchange end plate A, and meanwhile, the heat exchange end plate B, the heat exchange end plate and the U-shaped heat exchange tube form the other independent cavity, so that the two cavities are mutually independent, and further, the serious problems of special medium failure, pollution and the like caused by medium mixing are avoided.

Inventors

• CHEN JIE
• ZHANG GUANGQIANG

Assignees

• 合肥亦威科技有限公司
• 合肥亦威科技有限公司无锡分公司

Dates

Publication Date

20260508

Application Date

20250522

Claims (6)

1. 1. The shell-and-tube heat exchanger capable of avoiding liquid mixing caused by poor manufacturing comprises a heat exchanger shell (1), and is characterized in that an assembly mechanism (2) for blocking medium mixing and leakage is arranged on the heat exchanger shell (1); The assembly mechanism (2) comprises a heat exchange tube (21) arranged inside a heat exchanger shell (1), a heat exchange end plate A (22) connected with a bent outer side port of the heat exchange tube (21) is arranged at one end of the heat exchanger shell (1), a heat exchange end plate B (23) connected with an inner side port of the heat exchange tube (21) is arranged at the other end of the heat exchanger shell (1), and a heat exchanger end cover (24) is arranged outside the heat exchange end plate B (23).
2. 2. The shell-and-tube heat exchanger avoiding liquid mixing caused by poor manufacturing according to claim 1, wherein the heat exchange tube (21) is an integrally formed U-shaped tube, and the heat exchange tube (21), the heat exchanger shell (1) and the heat exchange end plate A (22) form a sealed cavity.
3. 3. The shell-and-tube heat exchanger avoiding liquid mixing caused by poor manufacturing according to claim 1, wherein the heat exchange end plate A (22) is welded with the heat exchanger shell (1) and the bent outer side port of the heat exchange tube (21), and the heat exchange end plate B (23) is welded with the inner side straight tube section port of the heat exchange tube (21).
4. 4. The shell-and-tube heat exchanger avoiding liquid mixing caused by poor manufacturing according to claim 1, wherein the heat exchanger shell (1) is made of a full 316L stainless material, and the heat exchanger shell (1), the heat exchange end plate B (23) and the heat exchanger end cover (24) form an independent cavity.
5. 5. The shell-and-tube heat exchanger avoiding liquid mixing caused by poor manufacturing according to claim 1, wherein the surface of the heat exchanger shell (1) is subjected to polishing treatment, and the design pressure of the tube side of the heat exchange tube (21) is 3.0MPa.
6. 6. The shell-and-tube heat exchanger avoiding liquid mixing caused by poor manufacturing according to claim 1, wherein a baffle plate is arranged on the heat exchanger shell (1), a liquid outlet is formed in the position of the baffle plate, and a sealing gasket is arranged between the heat exchanger end cover (24) and the heat exchange end plate B (23).

Description

Shell-and-tube heat exchanger avoiding mixed liquid caused by poor manufacturing Technical Field The utility model relates to the technical field of heat exchange equipment, in particular to a shell-and-tube heat exchanger for avoiding liquid mixing caused by poor manufacturing. Background The shell-and-tube heat exchanger is widely applied to various production and living scenes as common heat exchange equipment, the basic working principle is that heat exchange media with the same or two different temperatures respectively and independently flow in a shell side and a tube side, heat is transferred from a high-temperature medium to a low-temperature medium through the heat exchange tube, and the core function is that the heat is effectively transferred and the heat exchange media with different temperatures are not mixed. The conventional shell-and-tube heat exchanger mainly comprises a shell, an end cover, an end plate, a heat exchange tube and a sealing assembly, wherein the end plate and the heat exchange tube are connected in an expansion mode or a welding mode through pipelines to isolate fluids with different temperatures, but after the heat exchange tube heat exchanger is used for a long time, the end plate and the heat exchange tube can be invalid due to fatigue failure caused by cold and hot changes, a sealing structure is invalid, cold and hot media are mixed, special media are invalid, pollution cannot be used due to the cold and hot media mixing in some specific occasions, and serious consequences such as incapability of using the special media are caused, moreover, leakage of the end plate and the heat exchange tube of the conventional heat exchanger cannot be discovered at the first time, and the end plate and the heat exchange tube are usually perceived from layered liquid after long time, so that huge losses are easily caused. In view of this, we provide a shell and tube heat exchanger that avoids the bad manufacturing causing the mixed liquid. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides the shell-and-tube heat exchanger for avoiding the mixed liquid caused by poor manufacturing, solves the technical problem that the heat exchanger in the prior art is easy to cause medium mixing and leakage to reduce heat exchange efficiency, achieves the aim of improving the sealing performance of the heat exchanger so as to avoid medium mixing, and can also realize quick identification and response of leakage problem. In order to solve the technical problems, the utility model provides a shell-and-tube heat exchanger for avoiding liquid mixing caused by poor manufacturing, which comprises a heat exchanger shell, wherein an assembly mechanism for blocking medium mixing and leakage is arranged on the heat exchanger shell. The assembly mechanism comprises a heat exchange tube arranged inside a heat exchange shell, a heat exchange end plate A connected with a bent outer side port of the heat exchange tube is arranged at one end of the heat exchange shell, a heat exchange end plate B connected with an inner side port of the heat exchange tube is arranged at the other end of the heat exchange shell, and a heat exchange end cover is arranged at the outer side of the heat exchange end plate B. Preferably, the heat exchange tube is an integrally formed U-shaped tube, and the heat exchange tube, the heat exchanger shell and the heat exchange end plate A form a sealed cavity. Preferably, the heat exchange end plate A is welded with the heat exchanger shell and the port at the curved outer side of the heat exchange tube, and the heat exchange end plate B is welded with the port at the straight tube section at the inner side of the heat exchange tube. Preferably, the heat exchanger shell is made of a full 316L stainless material, and the heat exchanger shell, the heat exchange end plate B and the heat exchanger end cover form an independent cavity. Preferably, the surface of the heat exchanger shell is polished, and the design pressure of the tube side of the heat exchange tube is 3.0MPa. Preferably, a baffle plate is arranged on the heat exchanger shell, a liquid outlet is formed in the position of the baffle plate, and a sealing gasket is arranged between the heat exchanger end cover and the heat exchange end plate B. By means of the technical scheme, the shell-and-tube heat exchanger for avoiding liquid mixing caused by poor manufacturing has the following beneficial effects: 1. According to the utility model, the assembly mechanism is arranged, the integrally formed U-shaped tube is adopted, a sealed cavity is formed by the integrally formed U-shaped tube, the shell and tube type heat exchanger shell and the heat exchange end plate A, and meanwhile, the heat exchange end plate B, the heat exchange end plate and the U-shaped heat exchange tube are respectively connected with the other independent cavity, so that the two cavities are mutually independent, the seriou