Horizontal type waste incineration waste heat boiler economizer hanging structure

Abstract

The utility model relates to the technical field of waste heat recovery treatment, in particular to a horizontal waste incineration waste heat boiler economizer hanging structure which comprises a flue and a tube panel arranged in the flue, and a plurality of hanging hoops are arranged on the tube panel in a matched mode. Tube panel hanging rods are arranged above the flue, and the lower ends of the tube panel hanging rods extend into the flue and are connected and matched with the hanging hoops in a one-to-one correspondence mode. A reinforcing piece is arranged on the flue around the tube panel suspender, and a comb-shaped plate fixedly connected with the tube panel suspender is arranged above the reinforcing piece; the comb-shaped plate is connected with a transition beam through a plurality of first-stage suspenders, and the transition beam is connected with a boiler large plate beam through a plurality of second-stage suspenders. By improving the structure of the tube panel suspender, the arrangement structure of the tube panel suspender is simplified while the hoisting requirement of the tube panel is guaranteed, welding treatment is more convenient, and potential safety hazards are avoided; meanwhile, the load of the tube panel suspender is transferred to the boiler large plate beam through the cooperation of the first-stage suspender and the second-stage suspender, and the overall stability and reliability are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery and treatment technology, specifically to a hanging structure for an economizer of a horizontal waste incineration waste heat boiler. Background Technology

[0002] Traditional coal-fired boilers employ a vertically stacked economizer arrangement. The economizer load is transferred to the annular header and then to the boiler top plate via the boiler tube panel. Newer waste heat boilers use a horizontally arranged economizer, typically arranged in rows within the tail flue. The economizer suspension system must bear the weight of the economizer tube assembly, as well as the weight of the economizer flue and the ash hopper below it. Therefore, due to structural limitations, the suspension structure cannot directly transfer the load to the top beam via internal suspension pipes. The economizer's self-weight load must first be transferred to the external flue shell, and then the overall load is transferred to the top beam via the flue shell's suspension system.

[0003] The currently used horizontal economizer tube suspension design, such as Figure 1 As shown, the angle steel is welded and fixed to the steel plate at the top of the flue on site. The upper elbow of the serpentine pipe is then welded to the angle steel via a clamp, thereby transferring the load of the economizer tube assembly to the upper flue liner. This arrangement has several problems: limited operating space for weld W1; the need for overhead welding, posing a safety hazard; and difficulty in guaranteeing quality, as weld W2 only guarantees the quality of the weld on one visible side, while the quality of the weld on the invisible side cannot be guaranteed. This results in difficult on-site installation, large positioning deviations, low efficiency, and impacts the project's installation schedule.

[0004] Therefore, it is necessary to propose a more reasonable technical solution to solve the technical problems existing in the current technology. Utility Model Content

[0005] To overcome at least one of the aforementioned defects, this utility model proposes a hanging structure for the economizer of a horizontal waste incineration waste heat boiler. By improving the design of the pipe hanging structure and the top flue liner, it solves the on-site installation problem, improves installation efficiency, and is more conducive to later inspection and maintenance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A hanging structure for an economizer in a horizontal waste incineration waste heat boiler includes a flue and a tube panel installed within the flue, with several hanging clamps fitted on the tube panel. Above the flue, tube panel hangers are installed, with their lower ends extending into the flue and correspondingly connected to the hanging clamps. Reinforcing members are installed around the tube panel hangers on the flue, and a comb-shaped plate is fixedly connected to the tube panel hangers above the reinforcing members. The flue reinforcing members are connected to a transition beam via several primary hangers, and the transition beam is connected to the boiler's main beam via several secondary hangers.

[0008] The economizer suspension structure disclosed above uses a combination of round steel tube screen hangers and flat steel hoops to fix the economizer tube screen. The tube screen hangers are fixed at the opening of the flue top liner, and the overall load of the economizer is transferred to the boiler main beam through the suspension at the top of the flue liner. This improves the reliability and stability of lifting the tube screen, makes installation more convenient and faster, and facilitates maintenance.

[0009] Furthermore, to facilitate connection and lifting of the pipe screen's bends, the lifting clamp can be constructed in various forms, and its structure is not limited to a single type. Here, we optimize and propose one feasible option: the lifting clamp is made of flat steel, with its first end pointing vertically upwards and engaging with the pipe screen's lifting rod. Its end, after being wrapped around the bend section of the pipe screen, connects to the middle of the clamp. Using this scheme, the flat steel is bent along its wide side to form a strip-shaped lifting ring covering the bend section. After covering the bend section, the flat steel is wound vertically to form a closed covering structure around the bend. The end and middle of the flat steel can be welded together to form a fixed whole.

[0010] Furthermore, the clamp and the tube screen hanger can be fitted in various ways, and their structure is not limited to a single one. Here, we optimize and propose one feasible option: the first end of the clamp forms a locking groove extending along its length, and the tube screen hanger is fitted and fixed into the locking groove. When the above scheme is adopted, the width of the locking groove is adapted to the diameter of the tube screen hanger.

[0011] Furthermore, to improve the stability of the connecting rod, the connection method of the tube screen hanger is set. Its structure is not limited to a single option; optimization is proposed here, and one feasible choice is suggested: the lower end of the tube screen hanger is welded and fixed to the auger, and the upper end of the tube screen hanger is welded and fixed to the comb plate. With this scheme, the lower end of the tube screen hanger is connected to the auger through pre-treatment, while the upper end of the tube screen hanger is welded and fixed to the upper surface of the comb plate. Therefore, overhead welding is unnecessary, eliminating safety hazards.

[0012] Furthermore, the reinforcing member can be made of various components, with its lower end mates with the upper lining plate of the flue and its upper end mates with the comb-shaped plate. Therefore, its structure is not limited to a single type. Here, we optimize and propose one feasible option: the reinforcing member includes a steel profile arranged around the outer periphery of the pipe panel hanger. When adopting the above scheme, the reinforcing member can be made of I-beams, channel steel, or other structures.

[0013] Furthermore, the comb-shaped plate, in conjunction with the tube panel hanger rods, enables the hoisting of the lower tube panel. Multiple connection methods can be employed to achieve the connection with multiple tube panel hanger rods; its structure is not limited to a single one. Here, we optimize and propose one feasible option: the comb-shaped plate extends along the length of the flue and is sequentially placed on the upper surface of multiple reinforcing members. Several comb-shaped grooves are formed on the comb-shaped plate and are fixed in place with the tube panel hanger rods. When using the above method, the comb-shaped plate can be connected and fixed to the reinforcing members by welding.

[0014] Furthermore, the primary suspension rod is used to connect the reinforcing member and the transition beam, thereby transferring the load on the reinforcing member to the transition beam. The specific configuration can be varied: the lower end of the primary suspension rod is connected to the reinforcing member, and the upper end passes through the transition beam and is fixed in place. When using the above scheme, the primary suspension rod can be a single piece or a combination of rods, thus allowing for length adjustment and facilitating control of installation accuracy.

[0015] Furthermore, when the primary lifting rod uses a composite rod, it can be constructed in various forms, and its structure is not uniquely limited. Here, we optimize and propose one feasible option: the primary lifting rod includes a lower lifting arm connected to the reinforcing member and an upper lifting arm connected to the transition beam. The upper and lower lifting arms are connected by an adjusting sleeve. With this scheme, the upper and lower lifting arms are respectively connected to the reinforcing member and the transition beam through adjustable structures, thereby achieving adjustable connections and improving connection accuracy.

[0016] Furthermore, various adjustment schemes can be implemented to connect the lower and upper booms, and the structure is not limited to a single one. Here, we optimize and propose one feasible option: the adjusting sleeve is connected to both the upper and lower booms via double pins. Using this scheme, the double pin connection allows for stepless adjustment, ensuring proper thermal expansion of the flue.

[0017] Furthermore, the connection structure of the secondary hanger can adopt various schemes, and its structure is not limited to one. Here, we optimize and propose one feasible option: the secondary hanger passes through the transition beam and connects with the transition beam, and the upper end of the secondary hanger passes through the boiler main plate beam and connects with it. When adopting the above scheme, the connection adjustment between the secondary hanger and the transition beam, as well as between the secondary hanger and the boiler main plate beam, is achieved through mating shims.

[0018] Compared with the prior art, some of the beneficial effects of the technical solution disclosed in this utility model include:

[0019] This utility model improves the structure of the tube screen hanger, which simplifies the installation structure of the tube screen hanger while ensuring the hoisting requirements of the tube screen, making welding more convenient and avoiding safety hazards. At the same time, the combination of the primary and secondary hanger structures transfers the load of the tube screen hanger to the boiler main beam, ensuring the overall stability and reliability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a traditional hanging structure;

[0022] Figure 2 for Figure 1 A magnified view of the local structure at point A in the middle.

[0023] Figure 3 for Figure 2 Side view of a local structure.

[0024] Figure 4 This is a schematic diagram of the connection at the hanging structure tube screen of this utility model.

[0025] Figure 5 This is a schematic diagram (top view) showing the arrangement of the hanging rods for the tube screen above the comb-shaped plate.

[0026] Figure 6 for Figure 4 A partial structural diagram (side view) at point B.

[0027] Figure 7 for Figure 4 A schematic diagram of the local structure at point B (front / rear view).

[0028] Figure 8 for Figure 7 A schematic diagram of the cross-section of the pipe screen with CC section, showing the connection between the hanger rod and the hoop.

[0029] Figure 9 This is a schematic diagram of the overall hanging structure of this utility model.

[0030] In the above attached figures, the meanings of each label are as follows:

[0031] 1. Tube screen; 2. Top lining plate of flue; 3. Reinforcing member; 4. Comb plate; 5. Hanging clamp; 6. Tube screen hanger; 7. Primary hanger; 701. Lower hanger arm; 702. Adjusting sleeve; 703. Upper hanger arm; 8. Transition beam; 9. Secondary hanger arm; 10. Boiler main beam. Detailed Implementation

[0032] The following description, in conjunction with the accompanying drawings and specific embodiments, further illustrates this embodiment.

[0033] In view of the many shortcomings of the prior art, the following embodiments are optimized and overcome the defects of the prior art.

[0034] Example

[0035] This embodiment discloses a hanging structure for an economizer of a horizontal waste incineration waste heat boiler, including a flue and a tube panel 1 installed in the flue. Several hanging clamps 5 are fitted on the tube panel 1. A tube panel hanger 6 is installed above the flue, and the lower end of the tube panel hanger 6 extends into the flue and is connected to the hanging clamps 5 one by one. A reinforcing member 3 is installed around the tube panel hanger 6 on the flue. A comb-shaped plate 4 is installed above the reinforcing member 3 and is fixedly connected to the tube panel hanger 6. The reinforcing member 3 is connected to a transition beam 8 through several primary hangers 7. The transition beam is connected to the boiler main beam 10 through several secondary hangers 9.

[0036] The economizer hanging structure disclosed in this embodiment uses a combination of a round steel tube panel hanger 6 and a flat steel clamp 5 to fix the economizer tube panel 1. The tube panel hanger 6 is fixed at the opening of the flue top liner 2, and the overall load of the economizer is transferred to the boiler main beam through the hanger at the top of the flue liner. This improves the reliability and stability of lifting the tube panel 1, makes installation more convenient and quick, and facilitates maintenance.

[0037] To facilitate connection and lifting of the pipe screen 1 at the bend, the lifting clamp 5 can be constructed in various forms, and its structure is not limited to a single one. This embodiment optimizes and adopts one feasible option: the lifting clamp 5 is made of flat steel, with its first end pointing vertically upward and engaging with the pipe screen lifting rod 6. Its end is wrapped around the bend section of the pipe screen 1 and then connected to the middle of the lifting clamp 5. When adopting the above scheme, the flat steel is bent along its wide side to form a strip-shaped lifting ring that covers the bend section. After the flat steel covers the bend section, it is wound vertically to form a closed covering structure for the bend. The end and middle of the flat steel can be welded to form a fixed whole.

[0038] The clamp 5 and the tube screen hanger 6 can be matched in various ways, and their structure is not limited to one specific form. This embodiment optimizes the design and adopts one feasible option: the first end of the clamp 5 forms a locking groove extending along its length, and the tube screen hanger 6 is fitted and fixed into the locking groove. When the above solution is adopted, the width of the locking groove is adapted to the diameter of the tube screen hanger 6.

[0039] To improve the stability of the connecting rod, the connection method of the tube screen hanger 6 is set. Its structure is not limited to a single option; this embodiment optimizes the connection and adopts one feasible choice: the lower end of the tube screen hanger 6 is welded and fixed to the clamp 5, and the upper end of the tube screen hanger 6 is welded and fixed to the comb plate 4. With this scheme, the lower end of the tube screen hanger 6 is connected to the clamp 5 through pre-treatment, while the upper end of the tube screen hanger 6 is connected and welded to the upper surface of the comb plate 4. Therefore, overhead welding is unnecessary, eliminating safety hazards.

[0040] The reinforcing member 3 can be made of various components. Its lower end mates with the upper lining plate of the flue, and its upper end mates with the comb-shaped plate 4. Therefore, its structure is not limited to a single type. This embodiment optimizes the design and adopts one feasible option: the reinforcing member 3 includes a steel profile arranged around the outer periphery of the pipe panel hanger 6. When adopting the above scheme, the reinforcing member 3 can be made of I-beams, channel steel, or other structures.

[0041] The comb-shaped plate 4, in conjunction with the tube panel hanger 6, enables the hoisting of the lower tube panel 1. Various methods can be used to connect it to multiple tube panel hangers 6, and its structure is not limited to a single one. This embodiment optimizes and adopts one feasible option: the comb-shaped plate 4 extends along the length of the flue and is sequentially placed on the upper surface of multiple reinforcing members 3. Several comb-shaped grooves are formed on the comb-shaped plate 4 and it is fixed in place with the tube panel hanger 6. When using the above method, the comb-shaped plate 4 can be connected and fixed to the reinforcing members 3 by welding.

[0042] The primary suspension rod 7 is used to connect the reinforcing member 3 and the transition beam, thereby transferring the load on the reinforcing member 3 to the transition beam. The specific arrangement can be varied: the lower end of the primary suspension rod 7 is connected to the reinforcing member 3, and the upper end passes through the transition beam 8 and is fixed in place. When using the above scheme, the primary suspension rod 7 can be a single rod or a combination rod, thus allowing for length adjustment and facilitating control of installation accuracy.

[0043] When the primary suspension rod 7 uses a composite rod, it can be constructed in various forms, and its structure is not uniquely limited. This embodiment optimizes and adopts one feasible option: the primary suspension rod 7 includes a lower suspension arm 701 connected to the comb plate 4 and an upper suspension arm 703 connected to the transition beam 8. The upper suspension arm 703 and the lower suspension arm 701 are connected by an adjusting sleeve 702. With the above scheme, the upper suspension arm 703 and the lower suspension arm 701 are respectively connected to the reinforcing member 3 and the transition beam through an adjustable structure, thereby achieving adjustable connection and improving connection accuracy.

[0044] Various adjustment schemes can be set to achieve the connection between the lower boom 701 and the upper boom 703. The structure is not limited to a single one. This embodiment optimizes and adopts one feasible option: the adjusting sleeve 702 is connected to both the upper boom 703 and the lower boom 701 via double bolts. When using the above scheme, the double bolt connection allows for stepless adjustment, ensuring the thermal expansion of the flue.

[0045] The connection structure of the secondary hanger 9 can adopt various schemes, and its structure is not limited to one. This embodiment optimizes and adopts one feasible option: the secondary hanger 9 passes through the transition beam 8 and is connected to the transition beam 8, and the upper end of the secondary hanger 9 passes through the boiler large plate beam 10 and is connected. When adopting the above scheme, the connection adjustment between the secondary hanger 9 and the transition beam 8, as well as with the boiler large plate beam 10, is achieved through mating shims.

[0046] The above are the embodiments listed in this example. However, this example is not limited to the optional embodiments described above. Those skilled in the art can arbitrarily combine the above methods to obtain other various embodiments. Anyone can derive other various forms of embodiments under the guidance of this example. The above specific embodiments should not be construed as limiting the scope of protection of this example. The scope of protection of this example should be defined in the claims.

Claims

1. A hanging structure for the economizer of a horizontal waste incineration waste heat boiler, characterized in that: It includes a flue and a tube screen (1) installed in the flue. The tube screen (1) is fitted with several hanging clamps (5). The flue top guard plate (2) is provided with an opening and is equipped with a tube screen hanger (6). The lower end of the tube screen hanger (6) extends into the flue and is connected to the hanging clamps (5) one by one. The flue top guard plate (2) is provided with a reinforcing member (3) around the tube screen hanger (6). A comb plate (4) is provided above the reinforcing member (3) and is fixedly connected to the tube screen hanger (6). The comb plate (4) is connected to the transition beam (8) through several primary hangers (7). The transition beam (8) is connected to the boiler large plate beam (10) through several secondary hangers (9).

2. The economizer hanging structure of the horizontal waste incineration waste heat boiler according to claim 1, characterized in that: The aforementioned hoist (5) is made of flat steel, with its head pointing vertically upward and engaging with the pipe screen hanger (6). Its end is attached to the bend of the pipe screen (1) and then connected to the middle of the hoist (5).

3. The economizer hanging structure of the horizontal waste incineration waste heat boiler according to claim 2, characterized in that: The first end of the hoist (5) forms a locking groove extending along its length, and the pipe screen hanger (6) is fixed into the locking groove.

4. The economizer hanging structure of the horizontal waste incineration waste heat boiler according to any one of claims 1 to 3, characterized in that: The lower end of the tube screen hanger (6) is welded and fixed to the hanger (5), and the upper end of the tube screen hanger (6) is welded and fixed to the comb plate (4).

5. The economizer hanging structure of the horizontal waste incineration waste heat boiler according to claim 1, characterized in that: The reinforcing member (3) includes a steel profile and is arranged around the outer periphery of the pipe screen hanger (6).

6. The economizer hanging structure of the horizontal waste incineration waste heat boiler according to claim 4, characterized in that: The comb plate (4) extends along the length of the flue and is successively placed on the upper surface of multiple reinforcing members (3). Several comb grooves are formed on the comb plate (4) and are fixed in conjunction with the pipe screen hanger (6).

7. The economizer hanging structure of the horizontal waste incineration waste heat boiler according to claim 1, characterized in that: The lower end of the primary suspension rod (7) is connected to the reinforcing member (3), and the upper end passes through the transition beam (8) and is fixed.

8. The economizer hanging structure of the horizontal waste incineration waste heat boiler according to claim 7, characterized in that: The primary boom (7) includes a lower boom (701) connected to the reinforcing member (3) and an upper boom (703) connected to the transition beam (8). The upper boom (703) and the lower boom (701) are connected by an adjusting sleeve (702).

9. The economizer hanging structure of the horizontal waste incineration waste heat boiler according to claim 8, characterized in that: The adjusting sleeve (702) is connected to the upper boom (703) and the lower boom (701) via double pins.

10. The economizer hanging structure of the horizontal waste incineration waste heat boiler according to claim 1, characterized in that: The secondary suspension rod (9) passes through the transition beam (8) and is connected to the transition beam (8). The upper end of the secondary suspension rod (9) passes through the boiler large plate beam (10) and is connected to it.

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