Frame-supported self-standing exhaust funnel for compressed air energy storage power station

Abstract

The utility model provides a compressed air energy storage power station frame supporting self-standing exhaust funnel which comprises a funnel body, an exhaust port is formed in the side wall of the funnel body, a flue connecting barrel is arranged on the exhaust port, a frame is fixedly arranged on the inner wall of the funnel body, the frame is arranged at the exhaust port, the bottom of the frame is fixed on a foundation of the funnel body, and the bottom of the frame is connected with the flue connecting barrel. The top of the frame extends to the position above the exhaust port, and the frame is used for reinforcing the structure of the exhaust port of the barrel. The frame is used for supporting the exhaust funnel, the problem of reinforcement of a large hole at the flue connection position of the exhaust funnel of the compressed air energy storage power station is effectively solved, the structure is simple, the construction is convenient, the overall stress performance of the funnel body is enhanced, and the aims of reinforcing the hole position of the flue and ensuring the structural safety are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust stacks of compressed air energy storage power stations, and particularly relates to a frame-supported self-standing exhaust stack for a compressed air energy storage power station. Background Art

[0002] As an important tail gas exhaust device in industries such as petrochemical, metal smelting, electric power, and solid waste treatment, industrial chimneys play a crucial role. The improvement of environmental protection standards and the requirement of large-scale industrialization have promoted the development of industrial chimneys towards being more environmentally friendly, safe, convenient for construction, and cost-saving. The development of chimneys has also transitioned from traditional brick chimneys and concrete chimneys to steel chimneys. Steel chimneys have solved problems such as corrosion, rapid aging, large floor area, and long construction period of concrete chimneys, and can be better recycled, reducing environmental pollution. A self-standing chimney forms a relatively stable structural system by being mounted together with the chimney foundation without other oblique supporting forces on the chimney body.

[0003] The exhaust stack of a compressed air energy storage power station belongs to a self-standing steel chimney, which mainly discharges the high-temperature waste gas after the compressed air does work through an expander from a salt cavern (or cave) into the atmosphere through a low-pressure exhaust stack. Therefore, it is necessary to open holes in the chimney body and connect it to the flue through a flange. The size of the opening is determined according to the flue gas velocity calculation. Since the steel exhaust stack belongs to a thin-walled structure, the opening in the chimney body is very unfavorable to its structural stress and stability, and strengthening measures need to be taken around the opening. In the exhaust stacks of some compressed air energy storage power stations, due to the limitation in the height direction, the horizontal dimension of the flue opening calculated according to the flue gas velocity is much larger than that of conventional projects, and even close to the diameter of the chimney body. This is a great weakening of the chimney body strength, equivalent to removing half of the chimney wall area at the flue interface position, and only setting stiffeners around the opening cannot meet the stress calculation of the chimney body. Summary of the Utility Model

[0004] The purpose of the utility model is to address the deficiencies of the prior art by providing a frame-supported self-standing exhaust stack for a compressed air energy storage power station. The frame is used to support the exhaust stack, effectively solving the problem of reinforcement for the large opening at the flue connection position of the exhaust stack of a compressed air energy storage power station. It has the advantages of simple structure, convenient construction, enhanced overall mechanical properties of the chimney body, etc., achieving the purpose of strengthening the opening position of the flue and ensuring structural safety.

[0005] To solve the above technical problems, the utility model provides a frame-supported self-standing exhaust stack for a compressed air energy storage power station, which comprises a cylinder body. An exhaust port is arranged on the side wall of the cylinder body, and a flue connecting cylinder is arranged at the exhaust port. A frame is fixedly arranged on the inner wall of the cylinder body. The frame is arranged at the exhaust port. The bottom of the frame is fixed on the foundation of the cylinder body, and the top of the frame extends above the exhaust port. The frame is used to strengthen the structure at the exhaust port of the cylinder body.

[0006] Further, the frame comprises a plurality of vertical braces and a plurality of ring braces. The vertical braces and the ring braces are both fixedly arranged on the inner wall of the cylinder body. The vertical braces are arranged parallel to the axial direction of the cylinder body. The bottom of the vertical braces is fixed on the foundation of the cylinder body, and the top of the vertical braces extends above the exhaust port. The ring braces are arranged circumferentially around the cylinder body, and the plurality of vertical braces are connected into a whole through the ring braces.

[0007] Further, the ring braces are arranged at least at the bottom of the exhaust port, the top of the exhaust port, and the top of the vertical braces.

[0008] Further, the vertical braces and the ring braces are both connected to the cylinder body through full-length fillet welds.

[0009] Further, the bottom of the vertical braces is fixed on the foundation of the cylinder body through anchor bolts.

[0010] Further, the outer surfaces of the vertical braces and the ring braces are coated with high-temperature resistant and anti-corrosive paint.

[0011] Further, the vertical braces comprise square steel pipes.

[0012] Further, the ring braces comprise channel steels.

[0013] Further, eight vertical braces are arranged in parallel, and the eight vertical braces are evenly spaced.

[0014] Further, a plurality of stiffening ribs are arranged on the outer surface of the flue connecting cylinder. One end of each stiffening rib is connected to the outer wall of the cylinder body.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. The utility model mainly aims at the situation where the size of the exhaust port is close to the diameter of the exhaust stack. By fixedly arranging a frame at the exhaust port of the cylinder body, with the bottom of the frame fixed on the foundation of the cylinder body and the top of the frame extending above the exhaust port, the frame can strengthen the structure around the cylinder body near the exhaust port, improve the strength and stiffness of the structure at this place, so as to meet the force calculation of the cylinder body.

[0017] 2. The utility model strengthens the weak parts of the cylinder body specifically by arranging ring braces at the bottom and top of the exhaust port; by arranging ring braces at the top of the vertical braces, the supporting capacity of the whole frame is improved.

[0018] 3. The vertical braces and circumferential braces of the present utility model are both connected to the cylinder body through continuous fillet welds, ensuring the reliability of the connection between the vertical braces, circumferential braces and the cylinder body.

[0019] 4. The outer surfaces of the vertical braces and circumferential braces of the present utility model are coated with high-temperature and corrosion-resistant paint to prevent the tail gas in the cylinder body from affecting the service life of the paint layer. Description of the Drawings

[0020] Figure 1 is the internal elevation view of the exhaust chimney of the present utility model;

[0021] Figure 2 is Figure 1 the sectional view taken along line B-B in

[0022] Reference numerals in the drawings: cylinder body 1; exhaust port 2; flue connection cylinder 3; vertical brace 4; circumferential brace 5; anchor bolt 6; stiffening rib 7. Detailed Embodiment

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] As Figure 1 shown, this embodiment provides a self-supporting exhaust chimney for the frame support of a compressed air energy storage power station, including a cylinder body 1. An exhaust port 2 is opened on the side wall of the cylinder body 1. A flue connection cylinder 3 is arranged on the exhaust port 2. The flue connection cylinder 3 is in a cuboid shape. The direction in which the flue connection cylinder 3 extends out of the cylinder body 1 is the length direction of the flue connection cylinder 3, and the direction along the axis of the cylinder body 1 of the flue connection cylinder 3 is the height direction of the flue connection cylinder 3. In this embodiment, the width of the flue connection cylinder 3 is equal to the diameter of the cylinder body 1. The opening of the exhaust port 2 will greatly reduce the structural strength and stiffness of the cylinder body 1 at this place. In this embodiment, the cylinder body 1 is reinforced by fixedly arranging a frame on the inner wall of the cylinder body 1.

[0025] The frame includes a plurality of vertical braces 4 and a plurality of circumferential braces 5. The vertical braces 4 and the circumferential braces 5 are both fixedly arranged on the inner wall of the cylinder body 1. The vertical braces 4 are arranged parallel to the axis of the cylinder body 1. The bottom of the vertical braces 4 is fixed on the foundation of the cylinder body 1 through anchor bolts 6. The top of the vertical braces 4 extends above the exhaust port 2. The circumferential braces 5 are arranged around the circumference of the cylinder body 1. The plurality of vertical braces 4 are connected into one body through the circumferential braces 5.

[0026] In this embodiment, the vertical braces 4 and the circumferential braces 5 are both connected to the cylinder body 1 through continuous fillet welds.

[0027] In this embodiment, the vertical struts 4 are made of square steel pipes, and the ring struts 5 are made of channel steels. Since the temperature of the tail gas in the exhaust stack is close to 100°C, high-temperature resistant and anti-corrosive paint is applied to the outer surfaces of the vertical struts 4 and the ring struts 5.

[0028] As Figure 2 shown, in this embodiment, eight vertical struts 4 are vertically arranged, and the eight vertical struts 4 are evenly spaced. Three rings of ring struts 5 are arranged at the bottom of the exhaust port 2, the top of the exhaust port 2, and the top of the vertical struts 4 respectively, which can specifically strengthen the weak parts of the cylinder body 1. The ring strut 5 arranged at the top of the vertical strut 4 improves the overall frame support capacity.

[0029] As Figure 2 shown, a plurality of stiffeners 7 are arranged on the outer surface of the flue connection cylinder 3. One end of the stiffener 7 is connected to the outer wall of the cylinder body 1. Since the gas pressure at the exhaust port 2 of the cylinder body 1 is relatively large, the arrangement of the stiffeners 7 can prevent the local deformation of the flue connection cylinder 3 caused by the air flow pressure.

[0030] The installation steps of the frame-supported self-standing exhaust stack of the compressed air energy storage power station include: 1. Fix the vertical struts 4 on the foundation of the cylinder body 1 through anchor bolts 6; 2. Weld and install the steel plates of the cylinder body 1 in segments closely on the outside of the vertical struts 4, and connect them with continuous fillet welds at the contact positions with the vertical struts 4; 3. Install the flue connection cylinder 3; 4. Install the stiffeners 7; 5. Install the ring struts 5, weld and connect the ring struts 5 closely to the inner wall of the cylinder body 1, and weld and connect the ends of the ring struts 5 to the vertical struts 4; 6. Apply high-temperature anti-corrosive paint to all exposed steel structures (the steel plates of the cylinder body 1, the flue connection cylinder 3, the vertical struts 4, and the ring struts 5).

[0031] The above-described embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included within the protection scope of the present application.

Claims

1. A self-supporting exhaust chimney supported by a compressed air energy storage power station frame, characterized in that: The invention comprises a cylinder (1), an exhaust port (2) is provided on the side wall of the cylinder (1), a flue connecting tube (3) is arranged on the exhaust port (2), a frame is fixedly arranged on the inner wall of the cylinder (1), the frame is arranged at the exhaust port (2), the bottom of the frame is fixed on the base of the cylinder (1), the top of the frame extends to above the exhaust port (2), and the frame is used to strengthen the structure at the exhaust port (2) of the cylinder (1).

2. The compressed air energy storage power station frame supporting the self-supporting exhaust chimney according to claim 1 is characterized in that: The frame comprises a plurality of vertical supports (4) and a plurality of ring supports (5), wherein the vertical supports (4) and the ring supports (5) are both fixedly arranged on the inner wall of the cylinder (1), the vertical supports (4) are arranged axially parallel to the cylinder (1), the bottom of the vertical supports (4) is fixed on the base of the cylinder (1), the top of the vertical supports (4) extends above the exhaust port (2), the ring supports (5) are arranged circumferentially around the cylinder (1), and the plurality of vertical supports (4) are connected as a whole via the ring supports (5).

3. The compressed air energy storage power station frame supporting the self-supporting exhaust chimney according to claim 2 is characterized in that: The ring support (5) is arranged at least at the bottom of the exhaust port (2), the top of the exhaust port (2), and the top of the vertical support (4).

4. The compressed air energy storage power station frame supporting the self-supporting exhaust chimney according to claim 2 is characterized in that: The vertical support (4) and the ring support (5) are both connected to the cylinder (1) via full-length fillet welds.

5. The self-supporting exhaust chimney supported by the frame of the compressed air energy storage power station according to claim 2 is characterized in that: The bottom of the vertical support (4) is fixed to the foundation of the cylinder (1) by means of anchor bolts (6).

6. The self-supporting exhaust chimney supported by the frame of the compressed air energy storage power station according to claim 2 is characterized in that: The outer surfaces of the vertical support (4) and the ring support (5) are painted with high temperature resistant anti-corrosion paint.

7. The self-supporting exhaust chimney supported by the frame of a compressed air energy storage power station according to any one of claims 2 to 6, characterized in that: The vertical support (4) comprises a square steel pipe.

8. The self-supporting exhaust chimney supported by the frame of a compressed air energy storage power station according to any one of claims 2 to 6, characterized in that: The ring support (5) comprises a channel steel.

9. The self-supporting exhaust chimney supported by the frame of a compressed air energy storage power station according to any one of claims 2 to 6, characterized in that: The eight vertical supports (4) are arranged in parallel, and the eight vertical supports (4) are evenly spaced.

10. The self-supporting exhaust chimney supported by the frame of a compressed air energy storage power station according to any one of claims 1 to 6, characterized in that: A plurality of stiffening ribs (7) are provided on the outer surface of the flue connecting tube (3), and one end of the stiffening rib (7) is connected to the outer wall of the tube body (1).

Images