Sub-packaging combined type chimney with high durability

Abstract

The utility model relates to the field of chemical equipment, and provides a split combined chimney with strong durability, which comprises a detachable chimney main body, a support steel frame and a wet electrostatic demister arranged at the bottom of the chimney main body, a plurality of bottom supports, a plurality of middle supports and a plurality of top supports are sequentially arranged on the side face of the chimney body from bottom to top and connected with the supporting steel frame, and elastic supports used for compensating linear displacement of expansion of the chimney body are arranged at the lower ends of the middle supports. The smoke pipe has the advantages that the bottom support, the middle support and the top support are arranged on the outer side of the smoke pipe in a combined mode, the elastic support is arranged on the middle support to bear the vertically-downward gravity of the smoke pipe, and the elastic deformation of the spring compensates for the linear displacement of expansion of the pipe body of the smoke pipe caused by temperature difference. And cracking of chimney supports and connecting pieces caused by temperature difference stress is prevented.

Description

Technical Field

[0001] The utility model relates to the field of chemical equipment, in particular to a sub-packaging combined chimney with strong durability. Background Art

[0002] In traditional large-scale boilers, the treatment and discharge of tail gas is a complex and important process. First, the tail gas needs to go through multiple treatment processes such as flue gas denitrification, dry dust removal, desulfurization, and wet electrostatic dust removal to ensure that it meets the emission standards. These treatment processes use chemical and physical methods to remove harmful substances in the tail gas, such as nitrogen oxides, particulate matter, sulfur oxides, etc., thereby reducing the impact on the environment and human health.

[0003] Then, the treated exhaust gas is discharged directly into the atmosphere through the chimney. Since there are specific requirements for the discharge height of the chimney, in order to meet the requirements of the boiler exhaust gas discharge height, the environmental protection device usually arranges a joint direct exhaust chimney in the wet electrostatic precipitator. In this way, not only can the discharge height requirements be met, but also the space can be effectively utilized to improve the overall efficiency of the equipment.

[0004] However, there are some problems with the traditional jointed straight exhaust chimney. Due to the influence of the system temperature difference, the chimney body is prone to expansion, resulting in temperature difference stress. This stress may cause cracks in the chimney supports and connectors, thus affecting the stability and safety of the equipment. In addition, this will also increase the manufacturing and operation and maintenance costs of the equipment, increasing the economic burden on the enterprise.

[0005] Therefore, how to arrange the chimney more reasonably and effectively to avoid damage to the chimney due to thermal expansion and contraction has become a core issue. This requires us to meet environmental protection requirements while taking into account the economy and reliability of the equipment to achieve optimization of boiler exhaust gas treatment and emissions. Utility Model Content

[0006] Aiming at the shortcomings of the existing technology, the problem of cracking of chimney supports and connectors due to temperature difference stress, thus affecting the stability and safety of the equipment, is solved;

[0007] The utility model provides a highly durable assembled combined chimney, comprising a detachable chimney main body, a supporting steel frame and a wet electrostatic demister arranged at the bottom of the chimney main body, a plurality of bottom supports, a plurality of middle supports and a plurality of top supports are sequentially arranged on the side of the chimney main body from bottom to top and connected to the supporting steel frame, and an elastic support is arranged at the lower end of the middle support for compensating for the linear displacement of the cylinder expansion.

[0008] Furthermore, the elastic support is a retractable support foot driven by an elastic device.

[0009] Furthermore, an end sealing device and a sealing ring plate are provided at the connection between the chimney body and the wet electrostatic precipitator. The end sealing device is sleeved on the upper end of the wet electrostatic precipitator, and the sealing ring plate is sealed inside the end sealing device.

[0010] Furthermore, the sealing cavity of the end sealing device is filled with polyurethane.

[0011] Furthermore, a liquid guide ring plate is provided at the lower end of the chimney body.

[0012] As a preferred solution, a plurality of ring plate supports are arranged on the outer side of the liquid guide ring plate.

[0013] Furthermore, the chimney body is composed of two semicircular hoops fixedly connected.

[0014] As a preferred solution, internal support members are arranged inside the chimney body at positions corresponding to the bottom support, the middle support and the top support.

[0015] As a preferred solution, the bottom support, the middle support and the top support are all symmetrically arranged in pairs around the chimney body, and an internal support member is arranged between two opposite supports.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model arranges the chimney as a detachable and assembled combined chimney, arranges three combined supports, namely, a bottom support, a middle support and a top support, on the outside of the chimney, and arranges an elastic support on the middle support to bear the vertical downward gravity of the chimney, and compensates for the linear displacement of the chimney body caused by the temperature difference by the elastic deformation of the spring, thereby preventing the cracking of the chimney support and the connecting parts due to the temperature difference stress.

[0018] 2. The utility model lowers the center of gravity of the chimney support by arranging elastic supports in the middle support, reduces the bending moment of the chimney under the action of earthquake load and wind load, and further improves the safety performance of the chimney.

[0019] 3. The utility model adopts a detachable subassembly structure to facilitate equipment lifting, maintenance and replacement, reduce high-altitude fire operations, and make inspection and maintenance safer and more efficient, reduce system operation and maintenance costs, and ensure long-term stable operation of the boiler flue gas treatment system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the utility model easier to understand, the utility model is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings.

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2for Figure 1 Enlarged schematic diagram at point A in the middle.

[0023] Figure 3 for Figure 1 Enlarged schematic diagram of point B in the middle.

[0024] The reference numerals in the accompanying drawings are:

[0025] 1. Support steel frame, 2. End sealing device, 21. Sealing chamber, 22. Polyurethane, 3. Sealing ring plate, 4. Wet electrostatic demister, 5. Chimney body, 6. Bottom support, 7. Elastic support, 8. Middle support, 9. Top support, 10. Internal support, 11. Liquid guide ring plate, 12. Ring plate support. DETAILED DESCRIPTION

[0026] To illustrate the features of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0027] Example:

[0028] refer to Figures 1 to 3 The present embodiment provides a highly durable assembled combined chimney to solve the problem of inconvenient transportation of workpieces in a narrow space; the present embodiment comprises a detachable chimney body 5, a supporting steel frame 1 and a wet electrostatic precipitator 4 arranged at the bottom of the chimney body, the chimney body 5 is composed of two semicircular clamps fixedly connected, the wet electrostatic precipitator 4 is fixedly connected to the chimney body 5 through the supporting steel frame 1, and the specific connection method is that four bottom supports 6, four middle supports 8 and four top supports 9 are arranged in pairs from bottom to top on the side of the chimney body 5 and connected to the supporting steel frame 1, the core improvement of the present embodiment is that an elastic support 7 for compensating for the linear displacement of the cylinder expansion is arranged at the lower end of the middle support 8, and the elastic support 7 is a retractable support foot driven by a spring, such as Figure 2 As shown, the support leg is composed of a shell and an I-shaped telescopic rod, one end of the telescopic rod is outside the shell, and the other end is inside the shell. A spring is arranged inside the shell to push the telescopic rod outward.

[0029] In order to prevent the liquid in the chimney body 5 from accumulating at the lower end of the chimney body 5 , a liquid guide ring plate 11 is provided at the lower end of the embodiment, and a plurality of ring plate supports 12 are provided on the outer side of the liquid guide ring plate 11 to ensure the stability of the liquid guide ring plate 11 .

[0030] In addition, in order to prevent external liquids from corroding the internal parts of the chimney body 5 and the wet electrostatic precipitator 4, an end sealing device 2 and a sealing ring plate 3 are arranged at the connection between the chimney body 5 and the wet electrostatic precipitator 4, wherein the end sealing device 2 is sleeved on the upper end of the wet electrostatic precipitator 4, and the sealing ring plate 3 is sealed on the inner side of the end sealing device 2, and in order to further ensure the sealing effect, polyurethane 22 is filled in the sealing cavity 21 of the end sealing device 2.

[0031] Internal supports 10 are arranged inside the chimney body 5 at positions corresponding to the bottom support 6 , the middle support 8 and the top support 9 , and the internal supports 10 are arranged between the supports symmetrically in pairs.

[0032] The above embodiments and drawings are only used to illustrate the technical solution of the utility model, and are not intended to limit the utility model. The utility model is described in detail with reference to the preferred embodiments. It should be understood by ordinary technicians in this field that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the utility model do not deviate from the purpose of the utility model and should also fall within the scope of protection of the claims of the utility model. Other related technical structures not fully disclosed in the utility model are prior art in the field.

Claims

1. A highly durable assembled chimney, comprising a detachable chimney body (5), a supporting steel frame (1) and a wet electrostatic demister (4) arranged at the bottom of the chimney body, characterized in that: A plurality of bottom supports (6), a plurality of middle supports (8) and a plurality of top supports (9) are sequentially arranged on the side of the chimney body (5) from bottom to top and connected to the supporting steel frame (1); an elastic support (7) for compensating for the linear displacement of the cylinder body due to expansion is arranged at the lower end of the middle support (8).

2. The durable assembled chimney according to claim 1, characterized in that: The elastic support (7) is a retractable support foot driven by an elastic device.

3. The durable assembled chimney according to claim 1, characterized in that: An end sealing device (2) and a sealing ring plate (3) are provided at the connection point between the chimney main body (5) and the wet electrostatic precipitator (4); the end sealing device (2) is sleeved on the upper end of the wet electrostatic precipitator (4), and the sealing ring plate (3) is sealed on the inner side of the end sealing device (2).

4. The durable assembled chimney according to claim 3 is characterized in that: The sealing cavity (21) of the end sealing device (2) is filled with polyurethane (22).

5. The durable assembled chimney according to claim 1 is characterized in that: A liquid guide ring plate (11) is provided at the lower end of the chimney body (5).

6. The durable assembled chimney according to claim 5, characterized in that: A plurality of ring plate supports (12) are arranged on the outer side of the liquid guide ring plate (11).

7. The durable assembled chimney according to claim 1, characterized in that: The chimney body (5) is composed of two semicircular hoops that are fixedly connected.

8. The durable assembled chimney according to claim 1, characterized in that: Internal support members (10) are arranged inside the chimney body (5) at positions corresponding to the bottom support (6), the middle support (8) and the top support (9).

9. The durable assembled chimney according to claim 1, characterized in that: The bottom support (6), the middle support (8) and the top support (9) are all symmetrically arranged in pairs around the chimney body (5), and an internal support member (10) is arranged between two opposing supports.

Images