CN203810374U

CN203810374U - Tube box structure for low temperature economizer

Info

Publication number: CN203810374U
Application number: CN201420041397.4U
Authority: CN
Inventors: 薛佳立; 王勇; 蔡明坤; 王康; 朱含波
Original assignee: Shanghai Boiler Works Co Ltd
Current assignee: Shanghai Boiler Works Co Ltd
Priority date: 2014-01-23
Filing date: 2014-01-23
Publication date: 2014-09-03
Anticipated expiration: 2024-01-23

Abstract

The utility model relates to a tube box structure for a low temperature economizer. The tube box structure comprises a door frame structure formed by fixedly connecting a crossbeam and upright posts and is characterized in that H-shaped rib tubes and supporting and hanging plates are arranged in the door frame structure; the H-shaped rib tubes are arranged on two sides of each supporting and hanging plate; the supporting and hanging plates are connected with the crossbeam. According to the tube box structure for the low temperature economizer, under the condition that the size and the weight of the H-shaped rib rubes are increased, the deformation and insufficient strength of a tube box can be avoided, the compactness of the tube box is improved, and the heat exchange efficiency of the low temperature economizer is improved.

Description

A kind of low-level (stack-gas) economizer channel structure

Technical field

The utility model relates to a kind of vertical or horizontal low temperature economizer tube box structure.

Background technology

Low-level (stack-gas) economizer is one of main heat exchanger components of station boiler heat recovery.What station boiler generally adopted in the past is light pipe economizer.In recent years, owing to limited by coal, the heat output of fuel that China power plant is used is low, ash is high, add light pipe economizer due to fault of construction, be in operation, exist that exhaust gas temperature is higher, the problem of serious wear, not only safe operation of power plant is produced and had a strong impact on, also greatly reduce the service efficiency of the energy simultaneously.

Adopting H shape fin low-level (stack-gas) economizer is one of optimal path addressing the above problem.H shape gilled tube low-level (stack-gas) economizer, has that heat exchanger effectiveness is high, abrasion resistance properties good, reduces fume side resistance, reduces dust stratification, adopts channel structure and the advantage such as easy for installation.H shape gilled tube box structure is welded into bobbin carriage by H shape gilled tube 1, gripper shoe 2, shrouding 3, elbow 4 and column 5 etc., as Figure 1A to Fig. 1 C is depicted as vertical structure, is horizontal type structure (in figure, the direction of arrow is flue gas direction) as shown in Figure 2 A and 2 B.

Along with unit capacity constantly increases, the H shape gilled tube box structure of low-level (stack-gas) economizer also increases thereupon.Due to the size of H shape gilled tube, the increase of weight, cause the gripper shoe deflection deformation of bobbin carriage to increase, insufficient strength even.According to previous experiences, in order to reduce deflection deformation and to gain in strength, certainly will increase height or the thickness of gripper shoe, this can cause the further increase of channel structure, weight, and reduces heat exchange efficiency.

Summary of the invention

The purpose of this utility model is to provide a kind of channel structure of more reasonably vertical or horizontal low temperature economizer.

In order to solve the problems of the technologies described above, the technical solution of the utility model has been to provide a kind of low-level (stack-gas) economizer channel structure, comprise the doorframe structure being formed by fixedly connecting by crossbeam and column, it is characterized in that: in doorframe structure, be provided with H shape gilled tube and a boatswain chair, H shape gilled tube is held on the both sides of every boatswain chair, and a boatswain chair connects with crossbeam.

Preferably, described boatswain chair connects with described crossbeam by bolt.

The utility model changes the gripper shoe of original H shape fin bobbin carriage into boatswain chair, and by bolt, will prop up boatswain chair and connect with crossbeam.

The channel structure of the low-level (stack-gas) economizer that the utility model provides is in the situation that the size of H shape gilled tube, the increase of weight, can not cause that bobbin carriage distortion increases, insufficient strength, increased the compactedness of bobbin carriage, improved the heat exchange efficiency of low-level (stack-gas) economizer.

Accompanying drawing explanation

Figure 1A is the front view of H shape fin vertical tube box structure;

Figure 1B is the left view of H shape fin vertical tube box structure;

Fig. 1 C is the top view of H shape fin vertical tube box structure;

Fig. 2 A is the front view of H shape fin horizontal pipe box structure;

Fig. 2 B is the top view of H shape fin horizontal pipe box structure;

The front view of the vertical low temperature economizer tube box structure that Fig. 3 A provides for the utility model;

The left view of the vertical low temperature economizer tube box structure that Fig. 3 B provides for the utility model;

The top view of the vertical low temperature economizer tube box structure that Fig. 3 C provides for the utility model;

The front view of the horizontal low temperature economizer tube box structure that Fig. 4 A provides for the utility model;

The top view of the horizontal low temperature economizer tube box structure that Fig. 4 B provides for the utility model.

The specific embodiment

For the utility model is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.

As shown in Fig. 3 A to Fig. 3 C, for vertical low temperature economizer tube box structure, if Fig. 4 A to Fig. 4 B is horizontal low temperature economizer tube box structure (in figure, the direction of arrow is flue gas direction), it includes the doorframe structure being formed by welding by crossbeam 6 and column 5, in this doorframe structure, there are H shape gilled tube 1 and a boatswain chair 7, H shape gilled tube 1 is held on the both sides of every boatswain chair 7, and a boatswain chair 7 connects with crossbeam 6 by bolt 8.Shrouding 4 surrounds the flue shell of bobbin carriage, and makes bobbin carriage form rock-steady structure.Finally, by elbow 4 by H shape gilled tube 1 UNICOM.

The utility model employing boatswain chair 7 replaces the gripper shoe 2 of original H shape fin bobbin carriage, and the increase of bobbin carriage intensity, stable increase, distortion are reduced.Bobbin carriage size reduces greatly, has increased the compactedness of bobbin carriage.The shell inner flue total cross section that shrouding 3 surrounds bobbin carriage diminishes, and has improved the heat exchange efficiency of low-level (stack-gas) economizer.

Claims

1. a low-level (stack-gas) economizer channel structure, comprise the doorframe structure being formed by fixedly connecting by crossbeam (6) and column (5), it is characterized in that: in doorframe structure, be provided with H shape gilled tube (1) and a boatswain chair (7), H shape gilled tube (1) is held on the both sides of every boatswain chair (7), and a boatswain chair (7) connects with crossbeam (6).

2. a kind of low-level (stack-gas) economizer channel structure as claimed in claim 1, is characterized in that: described boatswain chair (7) connects with described crossbeam (6) by bolt (8).