CN-224230795-U - Shell-and-tube heat exchanger with nichrome medium tube group

CN224230795UCN 224230795 UCN224230795 UCN 224230795UCN-224230795-U

Abstract

The utility model provides a shell-and-tube heat exchanger with a nichrome medium tube group, which comprises a shell, wherein an inner component is arranged in the shell and is in welded connection, the medium tube group and a baffle plate, the baffle plate comprises abutting end parts positioned at the upper end surface and the lower end surface of the baffle plate, a third brazing filler metal filling layer is arranged between the abutting end parts and the shell when the baffle plate is in a non-welded state, and at least one group of baffle plate vertical surfaces is also arranged between the baffle plate vertical surfaces and the shell when the baffle plate is in a non-welded state, and a first brazing filler metal filling layer is arranged between the baffle plate vertical surfaces and the shell. According to the utility model, the first brazing filler metal filling layer and the third brazing filler metal filling layer are additionally arranged on the end surfaces of the two sides and the upper end surface and the lower end surface of the baffle plate, so that after the baffle plate is placed into a brazing furnace and welded, the baffle plate and the shell are tightly adhered by the first brazing filler metal filling layer and the third brazing filler metal filling layer to form sealing connection, a gap is not required to be left, and a circulating medium is prevented from flowing out from the gap between the shell plate and the baffle plate.

Inventors

CHEN CHUNJUN
ZHANG HONGTAO
WANG SHAOBO

Assignees

青岛开拓隆海节能科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250613

Claims (7)

1. A shell-and-tube heat exchanger with a nickel-chromium alloy medium tube group is characterized in that, Comprises a shell body and a plurality of grooves, An internal component welded by a welding process of integral welding by adopting a brazing furnace is assembled in the shell and welded; a media stack; A baffle plate for passing through the medium pipe group; The medium pipe of the medium pipe group passes through the baffle plate and stretches into the collecting cover so that the medium pipe group is communicated with the collecting cover; A tube sheet welded to the header; the baffle plate comprises abutting end parts positioned at the upper end face and the lower end face of the baffle plate, When the welding device is in an unwelded state, a third brazing filler metal filling layer is arranged between the abutting end part and the shell; the baffle further comprises at least one set of baffle facades, When the baffle plate is in an unwelded state, a first brazing filler metal filling layer is arranged between the baffle plate vertical face and the shell.
2. A shell and tube heat exchanger having a tube set of nichrome media as claimed in claim 1, When the baffle plate is in a welding state, the baffle plate is tightly attached to the shell through the third brazing filler metal filling layer, so that sealing connection is formed.
3. A shell and tube heat exchanger having a tube set of nichrome media as claimed in claim 2, Baffle plate vertical surfaces of two adjacent groups of baffle plates are mutually staggered, When the baffle plate is in a welding state, the end faces of the two sides of the baffle plate are tightly attached to the shell through the first brazing filler metal filling layer, so that sealing connection is formed.
4. A shell and tube heat exchanger having a tube bank of nichrome media as claimed in claim 3, At least one group of through holes are arranged on the baffle plate, The medium pipe of the medium pipe group is arranged in the through hole, The medium pipe adopts a nichrome medium pipe with the diameter of 3mm-8mm, A certain gap of 0.1mm-0.2mm is formed between the medium pipe and the through hole, and the gap is filled with brazing filler metal.
5. A shell and tube heat exchanger having a tube set of nichrome media as claimed in claim 1, The media stack includes at least one stack of media tubes, The pipe diameter of a single medium pipe of the medium pipe group is 3-7mm; the media tube includes a straight tube end and a U-shaped end.
6. A shell and tube heat exchanger having a tube set of nichrome media as claimed in claim 5, A sinking type discharging groove is arranged on the tube plate, A medium pipe solder is arranged on the end part of the straight pipe positioned in the sinking type discharge groove; and at least one group of groove bodies are arranged on the end parts of the straight pipes at the position of the sinking type discharging groove.
7. A shell and tube heat exchanger having a nichrome media tube bank as set forth in claim 6, wherein, A sinking groove is arranged at the joint position of the collecting cover and the tube plate at the position far away from the sinking type discharging groove, And the sinking groove is filled with solder, and the current collecting cover is connected with the tube plate through the solder arranged in the sinking groove.

Description

Shell-and-tube heat exchanger with nichrome medium tube group Technical Field The utility model belongs to the technical field of heat exchanger preparation, and particularly relates to a shell-and-tube heat exchanger with a nichrome medium tube group. Background The heat exchanger comprises a tube plate, a tube group, a shell, a baffle plate, a liquid inlet cover and a liquid outlet cover. By arranging baffle plates in the shell of the heat exchanger, the flow is increased. The traditional shell and baffle plates are made of nonmetallic products. When the heat exchanger is assembled in a traditional mode, firstly, the tube plate and the nipple are subjected to flame brazing welding, after the welding of the work part is finished, the heat exchanger is welded with the straight tube and the U-shaped joint, then the baffle plate is installed on the straight tube to form a whole, and finally, the whole baffle plate is installed in the shell to complete the assembly of the heat exchanger. Because the baffle plate and the shell are assembled in a plug-in way, a certain installation clearance is reserved between the shell and the baffle plate for the convenience of assembly. During operation, the external circulation medium flows out from the gap between the shell and the baffle plate, so that certain exchange energy loss is caused; Moreover, when the heat exchanger is assembled in the traditional mode, the heat exchanger cannot be integrally welded, so that multiple-point welding is needed during welding, the heat exchanger is easy to leak, and the defects of high difficulty, long processing time and the like exist. Disclosure of utility model In view of the problems in the background art, one aspect of the present utility model is to provide a shell and tube heat exchanger with a tube bank of nichrome media, comprising a shell, An internal component welded by a welding process of integral welding by adopting a brazing furnace, and is arranged in the shell and welded; a media stack; A baffle plate for passing through the medium pipe group; The medium pipe of the medium pipe group passes through the baffle plate and stretches into the collecting cover so that the medium pipe group is communicated with the collecting cover; A tube sheet welded to the header; the baffle plate comprises abutting end parts positioned at the upper end face and the lower end face of the baffle plate, When the welding device is in an unwelded state, a third brazing filler metal filling layer is arranged between the abutting end part and the shell; the baffle further comprises at least one set of baffle facades, When the baffle plate is in an unwelded state, a first brazing filler metal filling layer is arranged between the baffle plate vertical face and the shell. Optionally, when in a welding state, the baffle plate is closely attached to the shell through the third brazing filler metal filling layer, so that sealing connection is formed. Optionally, baffle vertical surfaces of two adjacent baffle plates are arranged in a staggered way, When the baffle plate is in a welding state, the end faces of the two sides of the baffle plate are tightly attached to the shell through the first brazing filler metal filling layer, so that sealing connection is formed. Optionally, at least one group of through holes are arranged on the baffle plate, The medium pipe of the medium pipe group is arranged in the through hole, The medium pipe adopts a nichrome medium pipe with the diameter of 3mm-8mm, A certain gap of 0.1mm-0.2mm is formed between the medium pipe and the through hole, and the gap is filled with brazing filler metal. Optionally, the media stack comprises at least one stack of media tubes, The pipe diameter of a single medium pipe of the medium pipe group is 3-7mm; the media tube includes a straight tube end and a U-shaped end. Optionally, a sinking type discharging groove is arranged on the tube plate, A medium pipe solder is arranged on the end part of the straight pipe positioned in the sinking type discharge groove; and at least one group of groove bodies are arranged on the end parts of the straight pipes at the position of the sinking type discharging groove. Optionally, a sinking groove is arranged at the joint position of the collecting cover and the tube plate at the position far away from the sinking type discharging groove, And the sinking groove is filled with solder, and the current collecting cover is connected with the tube plate through the solder arranged in the sinking groove. In summary, the beneficial effects of the utility model are as follows: (1) The utility model ensures that the product is safe and reliable through multi-component integrated welding, can lighten the labor intensity of workers, is simple to operate, does not need professional staff, further reduces the labor cost, greatly improves the working efficiency, and simultaneously reduces the production cost by reducing the welding types (welding modes such