CN215763901U

CN215763901U - Nonmetal expansion joint structure of large-scale low-pressure large-expansion heat exchanger

Info

Publication number: CN215763901U
Application number: CN202122468118.5U
Authority: CN
Inventors: 白曙光; 高驰; 刘斌; 顾天平
Original assignee: Nanjing Haoyang Chemical Equipment Co ltd
Current assignee: Nanjing Haoyang Chemical Equipment Co ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-02-08
Anticipated expiration: 2031-10-14

Abstract

The utility model discloses a nonmetal expansion joint structure of a large-scale low-pressure large-expansion heat exchanger, wherein a fixing bolt is movably inserted into a through hole, a backing plate is movably sleeved on the outer side of the fixing bolt, a covering is movably connected to one side, positioned on the backing plate, of the outer side of the fixing bolt, a clamping buckle is movably sleeved on one side, positioned on the covering, of the outer side of the fixing bolt, a flat steel ring is movably sleeved inside the clamping buckle, a cover plate is movably sleeved on one side, positioned on the flat steel ring, of the outer side of the fixing bolt, and positioned inside the clamping buckle, the outer side of the fixing bolt is connected with a fixing nut through threads, the covering is fixed through the fixing bolt and the fixing nut, so that the covering is simply and quickly installed and replaced, the expansion joint has good flexibility through nonmetal arrangement, no reverse thrust influence is caused on equipment, the safety of the equipment is also improved, and the material of the nonmetal expansion joint not only has good high temperature resistance, but also has acid and alkali resistance.

Description

Nonmetal expansion joint structure of large-scale low-pressure large-expansion heat exchanger

Technical Field

The utility model relates to the technical field of expansion joints, in particular to a non-metal expansion joint structure of a large-scale low-pressure large-expansion heat exchanger.

Background

Expansion joints are also conventionally called compensators, or expansion joints. It is composed of bellows (an elastic element) and its working body, end pipe, support, flange and guide pipe. The expansion joint is a flexible structure provided on the vessel shell or pipe in order to compensate for additional stresses due to temperature differences and mechanical vibrations. The effective telescopic deformation of the working body corrugated pipe is utilized to absorb the dimensional change of pipelines, conduits, containers and the like caused by expansion and contraction due to heat and the like or compensate the axial, transverse and angular displacement of the pipelines, the conduits, the containers and the like. And can also be used for noise reduction and vibration reduction. In order to prevent the pipeline from deforming or breaking due to thermal elongation or temperature stress when the heating pipeline is heated, a compensator is required to be arranged on the pipeline to compensate the thermal elongation of the pipeline, so that the stress of the pipeline wall and the acting force acting on the valve member or the bracket structure are reduced.

The conventionally installed metal expansion joint is generally of an axial or radial independent buffering structure, or mainly buffers a single direction of the axial direction or the radial direction, the buffering space of the other direction is small, and omnibearing axial, radial and angular buffering is not provided in any direction.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a non-metal expansion joint structure of a large-scale low-pressure large-expansion heat exchanger, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the nonmetal expansion joint structure of the large-scale low-pressure large-expansion heat exchanger comprises a heat exchanger body, wherein an expansion joint mechanism is arranged on the outer side of the heat exchanger body;

the expansion joint mechanism comprises a first fixing frame, a second fixing frame and a plurality of through holes, the first fixing frame is fixedly connected to the outer side of the heat exchanger body, the second fixing frame is fixedly connected to the outer side of the heat exchanger body and is positioned below the first fixing frame, a plurality of through holes are respectively arranged at one ends of the first fixing frame and the second fixing frame, which are far away from the heat exchanger body, a fixing bolt is movably inserted into the through hole, a backing plate is movably sleeved on the outer side of the fixing bolt, the outer side of the fixing bolt is movably connected with a covering at one side of the backing plate, the outer side of the fixing bolt is movably sleeved with a clip at one side of the covering, the outer side of the fixing bolt is located inside the clip and movably sleeved with the flat steel ring, one side of the outer side of the fixing bolt, located on the flat steel ring, is movably sleeved with the cover plate and located inside the clip, and the outer side of the fixing bolt is connected with the fixing nut through threads.

Preferably, one end of the inner side of the first fixing frame is fixedly connected with a baffle, and one side of the baffle is fixedly connected to the outer side of the heat exchanger body.

Preferably, a heat insulation plate is arranged between the first fixing frame and the second fixing frame.

Preferably, a first heat-insulating nail penetrates through the upper end of one side of the heat-insulating plate movably, and a first gasket is fixedly sleeved on the outer side of the first heat-insulating nail.

Preferably, a second heat-insulating nail penetrates through the lower end of one side of the heat-insulating plate movably, and a second gasket is fixedly sleeved on the outer side of the second heat-insulating nail.

Preferably, one end of the first heat-preservation nail far away from the first gasket is fixedly connected to one side of the baffle, and one end of the second heat-preservation nail far away from the second gasket is fixedly connected to the outer side of the heat exchanger body.

Compared with the prior art, the utility model has the beneficial effects that: the non-metal expansion joint has the advantages that the skin is fixed through the fixing bolt and the fixing nut, so that the installation and the replacement of the skin are simple and rapid, the expansion joint has good flexibility through the non-metal arrangement, no reverse thrust influence is caused on equipment, the safety of the equipment is also improved, the non-metal expansion joint is made of a material which has good high temperature resistance, acid and alkali resistance, the absorption displacement in unit length is large, and the displacement in the three-dimensional direction can be absorbed.

Drawings

FIG. 1 is a schematic structural view of a heat exchanger body of the present invention;

FIG. 2 is a schematic cross-sectional view of an expansion joint of the present invention;

FIG. 3 is an enlarged view of the area A in FIG. 2 according to the present invention.

In the figure: 1. a heat exchanger body; 2. an expansion joint mechanism; 21. a first fixing frame; 22. a second fixing frame; 23. a through hole; 24. fixing the bolt; 25. a base plate; 26. covering a skin; 27. clamping and buckling; 28. a flat steel ring; 29. a cover plate; 210. fixing a nut; 3. a baffle plate; 4. a heat insulation plate; 5. a first heat-insulating nail; 6. a first gasket; 7. a second heat-preservation nail; 8. a second gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides a technical solution: the nonmetal expansion joint structure of the large-scale low-pressure large-expansion heat exchanger comprises a heat exchanger body 1, wherein an expansion joint mechanism 2 is arranged on the outer side of the heat exchanger body 1;

the expansion joint mechanism 2 comprises a first fixing frame 21, a second fixing frame 22 and a plurality of through holes 23, the first fixing frame 21 is fixedly connected to the outer side of the heat exchanger body 1, the second fixing frame 22 is fixedly connected to the outer side of the heat exchanger body 1 and is positioned below the first fixing frame 21, the plurality of through holes 23 are respectively arranged at one ends, far away from the heat exchanger body 1, of the first fixing frame 21 and the second fixing frame 22, fixing bolts 24 are movably inserted into the through holes 23, backing plates 25 are movably sleeved on the outer sides of the fixing bolts 24, skins 26 are movably connected to the outer sides of the fixing bolts 24 on one sides of the backing plates 25, clamps 27 are movably sleeved on one sides, positioned inside the clamps 27, of the outer sides of the fixing bolts 24 are movably sleeved with flat steel rings 28, cover plates 29 are movably sleeved on one sides, positioned on the flat steel rings 28, of the outer sides of the fixing bolts 24 and are positioned inside the clamps 27, there is fixation nut 210 in fixing bolt 24's the outside through threaded connection, fix covering 26 through fixing bolt 24 and fixation nut 210, make covering 26 installation change simple swift, setting through the nonmetal, make the expansion joint have good flexibility, do not have the thrust reaction influence to equipment, the security of equipment has also been improved, the material of nonmetal expansion joint not only has fine high temperature resistance, still has acid and alkali resistance, and the absorption displacement volume is big in the unit length, and can absorb the displacement volume of three-dimensional direction.

In this embodiment, specifically: the baffle 3 is fixedly connected to one end of the inner side of the first fixing frame 21, one side of the baffle 3 is fixedly connected to the outer side of the heat exchanger body 1, and the baffle 3 is arranged to play a role in guiding flow and protecting a heat insulation plate.

In this embodiment, specifically: the heat insulation plate 4 is arranged between the first fixing frame 21 and the second fixing frame 22, the heat insulation plate 4 is the main guarantee of heat insulation of the nonmetal expansion joint, the heat insulation plate is composed of multilayer ceramic fibers and other high-temperature resistant materials, and the thickness of the heat insulation plate can be determined through heat transfer calculation according to the temperature of a flowing medium, the heat conductivity coefficient of the high-temperature resistant materials and the like.

In this embodiment, specifically: the activity of one side upper end of heat insulating board 4 runs through there is first heat preservation nail 5, and the fixed cover in the outside of first heat preservation nail 5 has connect first packing ring 6, and heat insulating board 4 upper end is fixed through first heat preservation nail 5.

In this embodiment, specifically: the activity of one side lower extreme of heat insulating board 4 is run through and is had second heat preservation nail 7, and the outside of second heat preservation nail 7 is fixed to be cup jointed second packing ring 8, and heat insulating board 4 lower extreme is fixed through second heat preservation nail 7.

In this embodiment, specifically: one end fixed connection that first packing ring 6 was kept away from to first heat preservation nail 5 is in one side of baffle 3, and the one end fixed connection that second packing ring 8 was kept away from to second heat preservation nail 7 is in the outside of heat exchanger body 1, and first heat preservation nail 5 and second heat preservation nail 7 are fixed respectively in one side of baffle 3 and the outside of heat exchanger body 1.

The working principle or the structural principle, when in use, when the airflow passes through the baffle 3, the baffle 3 plays a role of guiding the airflow, meanwhile, the expansion joint body is prevented from being damaged too early due to the fact that air flow directly erodes the heat insulation plate, the function of protecting the heat insulation plate is also achieved, when the air flow passes through the heat insulation plate 4, through arranging the heat insulation plate 4, the nonmetal expansion joint is insulated, and the skin 26 is arranged to absorb the expansion amount, so that the air leakage and the rainwater leakage are avoided, the gasket 25 is arranged to make the sealing effect between the first fixing frame 21 and the second fixing frame and the expansion joint better, and the clamping buckle 27 and the cover plate 29, the flat steel ring 28 is fixed, and the skin 26 is also fixed, so that air leakage and rainwater leakage between the skin 26 and the cushion plate 25 and between the skin and the clamp 27 are prevented, the skin 26 is fixed through the fixing bolt 24 and the fixing nut 210, so that the skin 26 is easy and quick to install and replace.

The skin is a main expansion body of a non-metal expansion joint, is formed by compounding multiple layers of silicon rubber or high-silica polytetrafluoroethylene with excellent performance and alkali-free glass silk floss and the like, and is a high-strength sealing composite material.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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. Nonmetal expansion joint structure of large-scale low pressure large expansion heat exchanger, including heat exchanger body (1), its characterized in that: an expansion joint mechanism (2) is arranged on the outer side of the heat exchanger body (1);

the expansion joint mechanism (2) comprises a first fixing frame (21), a second fixing frame (22) and a plurality of through holes (23), the first fixing frame (21) is fixedly connected to the outer side of the heat exchanger body (1), the second fixing frame (22) is fixedly connected to the outer side of the heat exchanger body (1) and located below the first fixing frame (21), the through holes (23) are respectively arranged at one ends, away from the heat exchanger body (1), of the first fixing frame (21) and the second fixing frame (22), fixing bolts (24) are movably inserted into the through holes (23), backing plates (25) are movably sleeved on the outer sides of the fixing bolts (24), skins (26) are movably connected to one sides, located on the backing plates (25), of the outer sides of the fixing bolts (24), clamping buckles (27) are movably sleeved on one sides, located on the skins (26), the outer side of the fixing bolt (24) is located inside the clip (27) and movably sleeved with the flat steel ring (28), the outer side of the fixing bolt (24) is located on one side of the flat steel ring (28) and movably sleeved with the cover plate (29) and located inside the clip (27), and the outer side of the fixing bolt (24) is connected with the fixing nut (210) through threads.

2. The non-metallic expansion joint structure of the large-scale low-pressure large-expansion heat exchanger according to claim 1, characterized in that: the heat exchanger is characterized in that one end of the inner side of the first fixing frame (21) is fixedly connected with a baffle (3), and one side of the baffle (3) is fixedly connected to the outer side of the heat exchanger body (1).

3. The non-metallic expansion joint structure of the large-scale low-pressure large-expansion heat exchanger according to claim 1, characterized in that: and a heat insulation plate (4) is arranged between the first fixing frame (21) and the second fixing frame (22).

4. The non-metallic expansion joint structure of the large-scale low-pressure large-expansion heat exchanger according to claim 3, characterized in that: the heat insulation board is characterized in that a first heat insulation nail (5) penetrates through the upper end of one side of the heat insulation board (4) in a movable mode, and a first gasket (6) is fixedly sleeved on the outer side of the first heat insulation nail (5).

5. The non-metallic expansion joint structure of the large-scale low-pressure large-expansion heat exchanger according to claim 4, characterized in that: a second heat-insulating nail (7) penetrates through the lower end of one side of the heat-insulating plate (4) in a movable mode, and a second gasket (8) is fixedly sleeved on the outer side of the second heat-insulating nail (7).

6. The non-metallic expansion joint structure of the large-scale low-pressure large-expansion heat exchanger according to claim 5, characterized in that: one end of the first heat-preservation nail (5) far away from the first gasket (6) is fixedly connected to one side of the baffle (3), and one end of the second heat-preservation nail (7) far away from the second gasket (8) is fixedly connected to the outer side of the heat exchanger body (1).