CN217900600U

CN217900600U - Tail supporting structure of U-shaped tubular heat exchanger

Info

Publication number: CN217900600U
Application number: CN202221656093.XU
Authority: CN
Inventors: 刘斌; 王成林; 李鹏; 赵瑞; 高小斌; 陈海峰
Original assignee: Shanxi Yangmei Chemical Industry Machinery Group Co Ltd
Current assignee: Shanxi Yangmei Chemical Industry Machinery Group Co Ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-11-25
Anticipated expiration: 2032-06-28

Abstract

The utility model discloses a U type tubular heat exchanger's afterbody bearing structure for the afterbody to a plurality of U type heat exchange tubes that pile up the setting supports, and the afterbody of each U type heat exchange tube all corresponds the cover and is equipped with the sleeve pipe, and each sleeve pipe welded fastening each other. U type tubular heat exchanger's afterbody bearing structure have advantages such as simple structure, maneuverability are strong. The production cost is reduced while the standard requirements are met, the workload is reduced, the labor intensity is reduced, the efficiency is improved, and the tail part of the U-shaped heat exchange tube has an effective supporting function.

Description

Tail supporting structure of U-shaped tubular heat exchanger

Technical Field

The utility model relates to a bearing structure especially relates to a afterbody bearing structure of U type tubular heat exchanger.

Background

The U-shaped tubular heat exchanger can freely stretch out and draw back because of the tube bank, can not produce the thermal stress because of the difference in temperature between the shell side, and its thermal compensation performance is good, and the tube bank can be taken out from the casing, and easy access and washing, its simple structure, advantages such as manufacturing cost are lower simultaneously, by wide application in fields such as petroleum, chemical industry, metallurgy, electric power, machinery.

For a U-shaped tubular heat exchanger, when the unsupported span of the heat exchange tube exceeds the maximum unsupported span of the straight tube section of the heat exchange tube specified in GB/T151-2014, namely a support plate is required to be arranged, and the structural size of the support plate is larger than the maximum unsupported span specified by the standard, a tail support device is required to be added to the bent tube part.

The tail support structure is that the tails of all the heat exchange tubes are connected in a certain mode to reduce vibration and collision between the heat exchange tubes due to fluid impact and avoid damage to the tube bundle. The commonly used tail support structure is that a support plate is arranged at the tail of a U-shaped tube bundle, and all the bent parts of the heat exchange tubes are connected and fixed together. The supporting plate is provided with holes according to a pipe distribution diagram, and is cut into a plurality of strip-shaped steel plates along the central line of each layer of heat exchange pipe. And during cutting, the cutting gap of each steel plate is controlled within 2 mm. When the heat exchanger is installed, a row of heat exchange tubes are installed in sequence from inside to outside, namely, a cut steel plate strip is placed in the heat exchange tubes, and then two adjacent steel plate strips are welded between the heat exchange tubes, so that the steel plate strips are welded into a whole to play a role in supporting the tail.

However, the U-shaped heat exchange tube of the support structure has deviation during bending, and the requirement on the cutting precision of the support plate is high; meanwhile, after each layer of heat exchange tubes and the supporting steel strips are installed, the welding workload among the steel strips is large, and the actual manufacturing is difficult.

SUMMERY OF THE UTILITY MODEL

In view of this, this application provides a afterbody bearing structure of U type tubular heat exchanger.

U type tubular heat exchanger's afterbody bearing structure for the afterbody to a plurality of U type heat exchange tubes that pile up the setting supports, the afterbody of each U type heat exchange tube all corresponds the cover and is equipped with the sleeve pipe, and each sleeve pipe welded fastening each other.

U type tubular heat exchanger's afterbody bearing structure in, sheathed tube internal diameter with the external diameter of U type heat exchange tube corresponds the cooperation.

U type tubular heat exchanger's afterbody bearing structure in, the external diameter of U type pipe is 19 millimeters, the sleeve pipe internal diameter is 20 millimeters.

U type tubular heat exchanger's afterbody bearing structure in, the cover pipe box is located the centre position of the afterbody bend section of U type heat exchange tube.

The tail supporting structure of the U-shaped tubular heat exchanger also comprises a supporting plate arranged on a fixed object; and the sleeve adjacent to the support plate is fixedly welded with the support plate.

The tail supporting structure of the U-shaped tubular heat exchanger also comprises a binding steel belt; the binding steel belt wraps and binds the sleeves and is welded and fixed with the adjacent sleeves; and the two free ends of the binding steel belt are fixedly welded with the supporting plate.

U type tubular heat exchanger's afterbody bearing structure in, each the sleeve pipe spot welding is fixed each other.

U type tubular heat exchanger's afterbody bearing structure in, the sleeve pipe with backup pad spot welding is fixed.

U type tubular heat exchanger's afterbody bearing structure in, the constraint steel band is with adjacent sleeve pipe spot welding is fixed.

U type tubular heat exchanger's afterbody bearing structure in, the constraint steel band both free ends with the backup pad full weld is fixed.

U type tubular heat exchanger's afterbody bearing structure have advantages such as simple structure, maneuverability are strong. The production cost is reduced while the standard requirements are met, the workload is reduced, the labor intensity is reduced, the efficiency is improved, and the tail part of the U-shaped heat exchange tube has an effective supporting function.

Drawings

In order to more clearly illustrate the technical solutions of the present application, embodiments of the present application will be further illustrated and described with reference to the following drawings, which are only intended to more conveniently and specifically describe embodiments of the present application and not to limit the present application.

Fig. 1 is an assembly schematic view of a tail support structure of a U-shaped tubular heat exchanger according to the present invention;

fig. 2 is a schematic cross-sectional view of a tail support structure of a U-shaped tubular heat exchanger according to the present invention; and

fig. 3 is a partially enlarged schematic view of a tail supporting structure of the U-shaped tubular heat exchanger according to the present invention.

Detailed Description

As shown in fig. 1, 2 and 3, the present application provides a tail support structure of a U-shaped tubular heat exchanger, which is used for supporting the tail 11 of a plurality of stacked U-shaped heat exchange tubes 1. Specifically, sleeves 12 are correspondingly sleeved at the tail 11 of each U-shaped heat exchange tube 1, and the sleeves 12 are welded and fixed with each other. For example, the sleeve 12 is welded and fixed to the adjacent sleeve 121 in fig. 2; the sleeve 12 is also welded to other adjacent sleeves.

In actual production, before the U-shaped heat exchange tube 1 is bent, the sleeve 12 is sleeved on the outer side of the U-shaped heat exchange tube 1, and the sleeve 12 is located in the middle of the bent section of the tail 11 of the U-shaped heat exchange tube 1. The inner diameter specification of the selected sleeve 12 is matched with the outer diameter specification of the U-shaped heat exchange tube 1 correspondingly, namely, the sleeve 12 is ensured to be sleeved outside the U-shaped heat exchange tube 1, and the gap between the sleeve 12 and the U-shaped heat exchange tube 1 is not too large to influence the effective limit of the sleeve 12 on the U-shaped heat exchange tube 1. For example, if the outer diameter of the selected U-shaped tube 1 is 19 mm, a sleeve 12 with an inner diameter of 20 mm may be used to match with the selected U-shaped tube. When the U-shaped heat exchange tube bundle is manufactured, after each row of U-shaped heat exchange tubes 1 are installed from inside to outside, the sleeves 12 are welded firmly, so that all the sleeves 12 are welded into a whole after the last row of U-shaped heat exchange tubes 1 are installed. In practice, all of the sleeves 12 may be welded together by spot welding.

U type tubular heat exchanger's afterbody bearing structure have advantages such as simple structure, maneuverability are strong, reduced manufacturing cost when satisfying standard requirement, reduced work load, alleviateed intensity of labour, improved efficiency, played effectual supporting role at the afterbody of U type heat exchange tube.

Furthermore, the U-shaped tubular heat exchanger's afterbody bearing structure of the present invention, still include the backup pad 14 that sets up on outside fixture (not shown), backup pad 14 and each sleeve pipe 12 welded fastening rather than adjacent. In practice, the supporting plate 14 and the adjacent sleeves 12 can be fixed by spot welding. Furthermore, the tail supporting structure of the U-shaped tubular heat exchanger can also comprise a binding steel belt 13. The binding steel strip 13 wraps and binds each sleeve 12, and the sleeve 12 adjacent to the binding steel strip 13 is welded and fixed thereto (for example, the sleeve 122 is welded and fixed to the binding steel strip 13 by spot welding), and both

free ends

131 and 132 of the binding steel strip 13 are welded and fixed to the support plate 14 by full welding.

It should be noted that in the context of the present application, the "left end" and "right end" of each connecting rod refer to relative positions, which are defined only for the convenience of describing the present application and should not be considered as limiting the present application. When the relative position changes, the original "left end" may be considered as the "right end", while the original "right end" may be considered as the "left end".

Numerous specific examples are provided in the embodiments provided herein, it being understood that these examples are for purposes of illustrating the embodiments of the present application in detail and are not intended to be limiting of the present application. Embodiments in the present application may be practiced without these specific examples. Structures and/or techniques that are well known to those of ordinary skill in the art have not been shown in detail in some implementations in order not to obscure the understanding of this application.

While preferred embodiments of the present application have been shown and described herein, it will be readily understood by those skilled in the art that these embodiments are provided by way of example only. Numerous variations, changes, and substitutions will now occur to those skilled in the art without departing from the application. It should be understood that various alternatives to the embodiments of the application described herein may be optionally employed in practicing the application. It is intended that the scope of the application be defined by the claims and that structures within the scope of these claims and their equivalents be covered thereby.

Claims

1. A tail supporting structure of a U-shaped tubular heat exchanger is used for supporting the tails of a plurality of stacked U-shaped heat exchange tubes and is characterized in that sleeves are correspondingly sleeved at the tails of the U-shaped heat exchange tubes and are welded and fixed with each other;

the support plate is arranged on a fixed object;

wherein the sleeve adjacent to the support plate is welded to the support plate;

also includes a binding steel belt;

the binding steel strip wraps and binds each sleeve and is fixedly welded with the adjacent sleeve; and is

And the two free ends of the binding steel belt are fixedly welded with the supporting plate.

2. The aft support structure of a U-tube heat exchanger as in claim 1, wherein an inner diameter of the sleeve is correspondingly matched to an outer diameter of the U-tube heat exchanger.

3. An aft support structure for a U-tube heat exchanger as in claim 2, wherein the U-tube has an outer diameter of 19 mm and the jacket has an inner diameter of 20 mm.

4. The aft support structure of a U-tube heat exchanger as recited in claim 1 wherein said sleeve is centered over an aft bend section of said U-tube heat exchanger.

5. A rear support structure for a U-tube heat exchanger according to claim 1, wherein the sleeves are spot welded to each other.

6. The aft support structure of a U-tube heat exchanger as set forth in claim 1, wherein said sleeve adjacent said support plate is spot welded to said support plate.

7. The rear support structure of a U-tube heat exchanger as set forth in claim 1, wherein said binding steel band is spot-welded to an adjacent one of said sleeves.

8. The aft support structure of a U-tube heat exchanger as in claim 1, wherein both free ends of the restraining strip are full-welded to the support plate.