CN219161084U

CN219161084U - Bottom plate of tubular gas-gas heat exchanger

Info

Publication number: CN219161084U
Application number: CN202222923737.3U
Authority: CN
Inventors: 孟凡新
Original assignee: Wallstein Thermal Equipment Tianjin Co ltd
Current assignee: Wallstein Thermal Equipment Tianjin Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-06-09
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses a bottom plate of a tubular gas-gas heat exchanger, which comprises a lower end plate, an upper end plate, a connecting plate and a stress impact mechanism, wherein the connecting plate is arranged between the lower end plate and the upper end plate, the connecting plate is provided with two groups, the two groups of connecting plates are arranged at two ends of the lower end plate, the two groups of connecting plates, the lower end plate and the upper end plate are arranged in a hollow rectangular shape, a stress impact cavity is arranged between the two groups of connecting plates and the lower end plate and between the two groups of connecting plates and the upper end plate, the upper end plate and the lower end plate are correspondingly provided with mounting holes, the stress impact mechanism is arranged in the stress impact cavity, the stress impact mechanism comprises a sleeve and a stress impact assembly, the stress impact assembly is arranged in the stress impact cavity, the sleeve is arranged on the stress impact assembly, a heat exchange tube is welded in the sleeve, the heat exchange tube penetrates through the mounting holes, and the diameter of the mounting holes is larger than that of the heat exchange tube. The utility model relates to the technical field of heat exchangers, and particularly provides a bottom plate of a tubular gas-gas heat exchanger, which can automatically offset expansion stress of a heat exchange tube so as to ensure tightness between the heat exchange tube and a mounting hole.

Description

Bottom plate of tubular gas-gas heat exchanger

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a bottom plate of a tubular gas-gas heat exchanger.

Background

A tube type gas-gas heat exchanger (GGH) is a heat exchange device cooled by a high-temperature fluid and heated by a low-temperature fluid, wherein the high-temperature fluid is a gas containing pollutants (which can be called raw flue gas), and the low-temperature fluid is a gas after purification treatment (which can be called clean flue gas); the tubular GGH mainly comprises an upper end plate, a lower end plate, a middle partition plate, side walls and hundreds or thousands of heat pipe elements (heat exchange tube bundles), and is characterized in that the heat exchange tubes are vertically (vertically and along the gravity direction) arranged in the mounting holes of the lower end plate, and fluid in the heat exchange tubes flows from bottom to top or from top to bottom. The heat exchange tube expands after being heated to generate huge internal stress, so that stress damage is generated to the mounting hole of the lower end plate of the ventilation heat, and the tightness between the lower end plate and the heat exchange tube is damaged, thereby influencing the service life of the tubular gas-gas heat exchanger. Therefore, it is necessary to provide a bottom plate of a tube type gas-gas heat exchanger excellent in sealing performance.

Disclosure of Invention

Aiming at the situation, in order to make up the prior defects, the utility model provides the bottom plate of the tubular gas-gas heat exchanger, which can automatically offset the expansion stress of the heat exchange tube so as to ensure the tightness between the heat exchange tube and the mounting hole.

The utility model provides the following technical scheme: the utility model provides a bottom plate of a tubular gas-gas heat exchanger, which comprises a lower end plate, an upper end plate, a connecting plate and a stress impact mechanism, wherein the connecting plate is arranged between the lower end plate and the upper end plate, the connecting plate is provided with two groups, the two groups of connecting plates are arranged at two ends of the lower end plate, the two groups of connecting plates, the lower end plate and the upper end plate are arranged in a hollow rectangular shape, a stress impact cavity is arranged between the connecting plates, the lower end plate and the upper end plate, mounting holes are correspondingly formed in the upper end plate and the lower end plate, the stress impact mechanism is arranged in the stress impact cavity, the stress impact mechanism comprises a sleeve and a stress impact assembly, the stress impact assembly is arranged in the stress impact cavity, the sleeve is arranged on the stress impact assembly, a plurality of groups of stress impact assemblies are uniformly distributed along the circumference outer side of the sleeve, heat exchange tubes are welded in the sleeve, the heat exchange tubes penetrate through the mounting holes, the diameters of the mounting holes are slightly larger than the diameters of the heat exchange tubes, and the diameters of the mounting holes are slightly larger than the diameters of the heat exchange tubes, so that the expansion of the heat exchange tubes is optimal.

Further, the stress punching assembly comprises a supporting vertical plate and an arc-shaped folded edge, the supporting vertical plate is arranged between the upper end plate and the lower end plate, one end of the arc-shaped folded edge is fixedly arranged on the supporting vertical plate, and the other end of the arc-shaped folded edge is connected with the sleeve.

Preferably, the arc-shaped folded edges are provided with a plurality of groups along the height direction of the supporting vertical plate, so that the stress deformation can be more uniformly resisted.

For assisting the arc hem to punch and support expansion stress, be equipped with the ventilation groove on the joint board, be equipped with the air guide groove on the support riser, all be equipped with the passageway of ventilating between support riser and the joint board, support between riser and the support riser, all communicate between ventilation groove, air guide groove and the passageway of ventilating.

Preferably, the guide grooves are arranged in one-to-one correspondence with the arc-shaped folded edges.

Preferably, fixing bolt holes are formed in four corners of the lower end plate.

The beneficial effects obtained by the utility model by adopting the structure are as follows: according to the bottom plate of the tubular gas-gas heat exchanger, the stress transmitted by the sleeve subjected to expansion stress of the heat exchange tube is counteracted in a flexible connection mode through the arrangement of the arc-shaped folded edges, and the ventilation grooves, the air guide grooves and the ventilation channels which are communicated are matched, so that the ventilation grooves are used for transmitting gas into the stress impact cavity, the pressure is generated on the arc-shaped folded edges, the stress on the other side of the arc-shaped folded edges is impacted, and the stress damage generated after the heat exchange tube is heated and expanded is effectively solved.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the overall structure of a bottom plate of a tubular gas-gas heat exchanger according to the present utility model;

fig. 2 is a schematic airflow diagram of a bottom plate of a tubular gas-gas heat exchanger according to the present utility model.

The heat exchange tube comprises a lower end plate 1, an upper end plate 2, a connecting plate 3, a connecting plate 4, a stress punching cavity 5, a mounting hole 6, a sleeve 7, a stress punching assembly 8, a heat exchange tube 9, a supporting vertical plate 10, an arc-shaped folded edge 11, an air channel 12, an air guide channel 13, an air channel 14 and a fixing bolt hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

Example 1

As shown in fig. 1-2, this embodiment provides a bottom plate of a tubular gas-gas heat exchanger, including a lower end plate 1, an upper end plate 2, a connecting plate 3 and a stress impact mechanism, the connecting plate 3 is disposed between the lower end plate 1 and the upper end plate 2, the connecting plate 3 is provided with two groups, the two groups of connecting plates 3 are disposed at two ends of the lower end plate 1, the two groups of connecting plates 3 and the lower end plate 1, the upper end plate 2 are in a hollow rectangular arrangement, a stress impact cavity 4 is disposed between the two groups of connecting plates 3 and the lower end plate 1, the upper end plate 2 and the lower end plate 1, a mounting hole 5 is correspondingly disposed on the upper end plate 2 and the lower end plate 1, the stress impact mechanism is disposed in the stress impact cavity 4, the stress impact mechanism includes a sleeve 6 and a stress impact assembly 7, the stress impact assembly 7 is disposed in the stress impact assembly 7, the sleeve 6 is uniformly distributed with a plurality of groups along the circumference outside of the sleeve 6, the heat exchange tubes 8 are disposed in the welding manner in the sleeve 6, the heat exchange tubes 8 penetrate the mounting hole 5, the diameter of the mounting hole 5 is larger than the diameter of the heat exchange tubes 8, and the diameter of the mounting hole 5 is slightly larger than the diameter of the heat exchange tubes 8, and the diameters of the mounting hole 5 are satisfied as the optimal expansion tubes 8.

In this embodiment, the stress impact assembly 7 includes a supporting riser 9 and an arc-shaped folded edge 10, the supporting riser 9 is disposed between the upper end plate 2 and the lower end plate 1, one end of the arc-shaped folded edge 10 is fixedly disposed on the supporting riser 9, the other end of the arc-shaped folded edge 10 is connected with the sleeve 6, and the arc-shaped folded edge 10 is provided with multiple groups along the height direction of the supporting riser 9, so that the stress deformation can be impacted more uniformly.

Example 2

As a further improvement of example 1, this example was modified based on example 1 as follows: the connecting plate 3 is provided with an air vent groove 11, the supporting vertical plate 9 is provided with an air guide groove 12, an air vent channel 13 is arranged between the supporting vertical plate 9 and the connecting plate 3 and between the supporting vertical plate 9 and the supporting vertical plate 9, and the air vent groove 11, the air guide groove 12 and the air vent channel 13 are communicated. The guide grooves are arranged in one-to-one correspondence with the arc-shaped folded edges 10. Fixing bolt holes 14 are formed in the four corners of the lower end plate 1.

When the heat exchange tube 8 is heated and expanded, expansion stress is firstly applied to the arc-shaped folded edges 10 through the sleeve 6, partial stress is counteracted in a flexible connection mode of the arc-shaped folded edges 10, and the ventilation groove 11, the air guide groove 12 and the ventilation channel 13 which are communicated are matched, so that the ventilation groove 11 is used for conveying air into the stress impact cavity 4, reverse pressure is generated on the arc-shaped folded edges 10, stress borne by the other side of the arc-shaped folded edges 10 is impacted, and stress damage caused after the heat exchange tube 8 is heated and expanded is effectively solved.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a bottom plate of tubular gas heat exchanger, includes lower end plate, upper end plate and joint board, its characterized in that: the device also comprises a stress impact mechanism, wherein the connecting plates are arranged between the lower end plate and the upper end plate, the connecting plates are provided with two groups, the two groups of connecting plates are arranged at the two ends of the lower end plate, the two groups of connecting plates, the lower end plate and the upper end plate are arranged in a hollow rectangle, stress impact cavities are arranged between the connecting plates, the lower end plate and the upper end plate, the upper end plate and the lower end plate are correspondingly provided with mounting holes, the stress punching mechanism is arranged in the stress punching cavity and comprises a sleeve and a stress punching assembly, the stress punching assembly is arranged in the stress punching cavity, the sleeve is arranged on the stress punching assembly, multiple groups of stress punching assemblies are uniformly distributed along the circumference outer side of the sleeve, heat exchange tubes are welded in the sleeve, the heat exchange tubes penetrate through mounting holes, and the diameter of the mounting holes is larger than that of the heat exchange tubes.

2. A bottom plate of a tubular gas-to-gas heat exchanger according to claim 1, wherein: the stress punching assembly comprises a supporting vertical plate and an arc-shaped folded edge, the supporting vertical plate is arranged between the upper end plate and the lower end plate, one end of the arc-shaped folded edge is fixedly arranged on the supporting vertical plate, and the other end of the arc-shaped folded edge is connected with the sleeve.

3. A bottom plate of a tubular gas-to-gas heat exchanger according to claim 2, wherein: the arc-shaped folded edge is provided with a plurality of groups in the height direction of the supporting vertical plate.

4. A bottom plate of a tubular gas-to-gas heat exchanger according to claim 3, wherein: the connecting plate is provided with an air vent groove, the supporting vertical plate is provided with an air guide groove, air vent channels are arranged between the supporting vertical plate and the connecting plate and between the supporting vertical plate and the supporting vertical plate, and the air vent groove, the air guide groove and the air vent channels are communicated.

5. The base plate of a tubular gas-to-gas heat exchanger of claim 4, wherein: the air guide grooves are arranged in one-to-one correspondence with the arc-shaped folded edges.

6. A bottom plate of a tubular gas-to-gas heat exchanger according to claim 1, wherein: fixing bolt holes are formed in four corners of the lower end plate.