Ceiling hanging device for water-cooled wall of CFB (circulating fluid bed) boiler

Abstract

The utility model relates to a ceiling hanging device for a water-cooled wall of a CFB (circulating fluid bed) boiler, and aims to solve the problems that the ceiling of the water-cooled wall is deformed and the safe operation of the boiler is influenced due to the increase of the section of a hearth of the CFB boiler, the increase of the length, the height and the weight of a rigid beam and the increase of the deflection of the rigid beam. The utility model relates to a ceiling hanging device for a water-cooled wall of a CFB (circulating fluid bed) boiler. The ceiling hanging device comprises a hanging pipe, a hanging rod, rooting lug plates and fastening connecting pieces, the bottom end of the hanging pipe is fixedly connected with a rooting lug plate on a water wall roof pipe through a fastening connecting piece, the top end of the hanging pipe is fixedly connected with the bottom end of the hanging rod, and the top end of the hanging rod is installed on a steel structure of a boiler above. The utility model is applied to the field of boiler structures.

Description

Technical Field

[0001] This utility model relates to a water-cooled wall ceiling hanging device, specifically a CFB boiler water-cooled wall ceiling hanging device, and is applied in the field of boiler structure. Background Technology

[0002] Circulating fluidized bed (CFB) boilers possess unique advantages over other combustion technologies in three aspects: alternative fuels, waste treatment, and environmental protection. As a combustion technology with strong adaptability to low-quality coal and low pollution control costs, it has been fully developed in my country, with its capacity and parameters continuously improving. Existing CFB boilers typically employ rigid beam structures for the water-cooled wall roof. These beams are used to tighten and increase the rigidity of the roof tubes, protecting them from permanent deformation under the boiler's maximum instantaneous allowable pressure. However, with the increase in furnace cross-section, the length, height, and weight of the rigid beams increase, leading to increased deflection of the beams themselves. This causes deformation of the water-cooled wall roof, consequently affecting the safe operation of the boiler. Utility Model Content

[0003] The purpose of this invention is to address the problem that the increased cross-section of the furnace in a CFB boiler leads to increased length, height, and weight of the rigid beams, resulting in increased deflection of the rigid beams themselves, which causes deformation of the water-cooled wall roof and consequently affects the safe operation of the boiler. Therefore, a CFB boiler water-cooled wall roof hanging device is needed.

[0004] The technical solution adopted by this utility model to solve the above problems is:

[0005] A CFB boiler water-cooled wall ceiling hanging device includes a hanging pipe, a hanging rod, a rooting lug plate, and fastening connectors;

[0006] The bottom end of the hanging pipe is fixedly connected to the rooting ear plate by fastening connectors, and the top end of the hanging pipe is fixedly connected to the bottom end of the hanging rod. The top end of the hanging rod is installed on the steel structure of the boiler above.

[0007] Furthermore, the fastening connector includes a retaining pin and two locking pins;

[0008] The top of the rooting ear plate is installed on the bottom of the hanging pipe, and the fixing pin is inserted into the rooting ear plate and the hanging pipe. A locking pin is installed at each end of the fixing pin, and the two locking pins are located on both sides of the hanging pipe.

[0009] Furthermore, the bottom end of the hanging pipe is machined with an ear plate mounting notch, the rooting ear plate is inserted into the ear plate mounting notch, and the fixing pin is fixedly installed on the side wall of the rooting ear plate and the upper ear plate mounting notch.

[0010] Furthermore, it also includes steel plates;

[0011] The steel plate is welded and fixedly installed on the top of the hanging pipe, and the bottom of the hanging rod is welded and fixedly installed on the steel plate.

[0012] Furthermore, it also includes a lock nut and a washer;

[0013] The top of the boom is machined with external threads. The top of the boom passes through the steel structure of the upper boiler and is threadedly connected to the upper locking nut. A washer is fitted on the boom and is located between the steel structure of the upper boiler and the nut.

[0014] The beneficial effects of this utility model are:

[0015] 1. The CFB boiler water-cooled wall ceiling hanging device of this utility model eliminates the structure of the rigid beam at the top of the boiler, reduces the top load, reduces weight, and increases the economic efficiency of the product.

[0016] 2. This utility model adopts a hanging pipe structure, which increases the rigidity of the water-cooled wall ceiling and ensures safe operation even under extreme working conditions.

[0017] 3. This utility model adjusts the specifications and dimensions of parts according to furnace height, water-cooled wall size, explosion-proof pressure, etc., to achieve the versatility and flexibility of the design. Attached Figure Description

[0018] Figure 1 This is a front view of the overall structure of this utility model.

[0019] Figure 2 for Figure 1 View from the center (K ​​direction). Detailed Implementation

[0020] Specific implementation method one: Combining Figures 1-2 This embodiment describes a CFB boiler water-cooled wall ceiling hanging device, which includes a hanging pipe 1, a hanging rod 7, a rooting ear plate 8, and fastening connectors.

[0021] The bottom end of the hanging pipe 1 is fixedly connected to the rooting ear plate 8 through a fastening connector, and the top end of the hanging pipe 1 is fixedly connected to the bottom end of the hanging rod 7. The top end of the hanging rod 7 is installed on the steel structure of the boiler above.

[0022] In this embodiment, the hanging pipe 1 bears the load generated under the maximum instantaneous allowable pressure of the furnace and the load of the roof itself. The rooting ear plate 8 is connected to the fixing member rooted on the roof, transferring the load to the hanging pipe 1. The hanging rod 7 is connected to the hanging pipe 1 and is used to transfer the load.

[0023] Specific Implementation Method Two: Combining Figures 1-2This embodiment describes a CFB boiler water-cooled wall ceiling hanging device, the fastening connectors of which include a fixing pin 3 and two locking pins 4;

[0024] The top of the rooting ear plate 8 is installed on the bottom of the hanging tube 1, and the fixing pin 3 is inserted into the rooting ear plate 8 and the hanging tube 1. A locking pin 4 is installed at each end of the fixing pin 3, and the two locking pins 4 are located on both sides of the hanging tube 1. Other methods are the same as in specific embodiment one.

[0025] In this embodiment, the fixing pin 3 and two locking pins 4 are used to connect the hanging pipe 1 and the rooting ear plate 8.

[0026] Specific implementation method three: Combining Figures 1-2 This embodiment describes a CFB boiler water-cooled wall ceiling hanging device. The bottom end of the hanging pipe 1 is machined with an ear plate mounting notch. An anchoring ear plate 8 is inserted into the ear plate mounting notch, and a fixing pin 3 is fixedly installed on the side wall of the anchoring ear plate 8 and the upper ear plate mounting notch. Other methods are the same as in specific embodiment two.

[0027] Specific implementation method four: Combination Figures 1-2 This embodiment describes a CFB boiler water-cooled wall ceiling hanging device, which also includes a steel plate 2;

[0028] The steel plate 2 is welded and fixedly installed on the top of the lifting pipe 1, and the bottom end of the lifting rod 7 is welded and fixedly installed on the steel plate 2. Other methods are the same as in specific implementation method one.

[0029] In this embodiment, the steel plate 2 is used to securely connect the hanging pipe 1 and the hanging rod 7.

[0030] Specific Implementation Method Five: Combining Figures 1-2 This embodiment describes a CFB boiler water-cooled wall ceiling hanging device, which further includes a locking nut 5 and a washer 6.

[0031] The top of the suspension rod 7 is machined with external threads. The top of the suspension rod 7 passes through the steel structure of the upper ceiling and is threadedly connected to the upper locking nut 5. The washer 6 is fitted onto the suspension rod 7 and is located between the steel structure of the upper boiler and the nut 5. Other methods are the same as in specific implementation method four.

[0032] Washer 6 and lock nut 5 are used as fasteners to connect the hanger 7 to the steel structure.

[0033] The above-described specific implementations can be partially adjusted by those skilled in the art in different ways without departing from the principles and purpose of this utility model. The scope of protection of this utility model is determined by the claims and is not limited to the above-described specific implementations. All implementation schemes within its scope are bound by this utility model.

Claims

1. A CFB boiler water-cooled wall ceiling suspension device, characterized in that: It includes a hanging pipe (1), a hanging rod (7), a rooting ear plate (8), and fastening connectors; The bottom end of the hanging pipe (1) is fixedly connected to the rooting ear plate (8) by a fastening connector, and the top end of the hanging pipe (1) is fixedly connected to the bottom end of the hanging rod (7). The top end of the hanging rod (7) is installed on the steel structure of the boiler above.

2. The CFB boiler water-cooled wall ceiling hanging device according to claim 1, characterized in that: The fastening connector includes a fixing pin (3) and two locking pins (4); The top of the rooting ear plate (8) is installed on the bottom of the hanging pipe (1), and the fixing pin (3) is inserted into the rooting ear plate (8) and the hanging pipe (1). A locking pin (4) is installed at each end of the fixing pin (3), and the two locking pins (4) are located on both sides of the hanging pipe (1).

3. The CFB boiler water-cooled wall ceiling hanging device according to claim 1, characterized in that: The bottom end of the hanging pipe (1) is machined with an ear plate mounting notch. The rooting ear plate (8) is inserted into the ear plate mounting notch, and the fixing pin (3) is fixedly installed on the side wall of the rooting ear plate (8) and the upper ear plate mounting notch.

4. The CFB boiler water-cooled wall ceiling hanging device according to claim 1, characterized in that: It also includes steel plate (2); The steel plate (2) is welded and fixedly installed on the top of the hanging pipe (1), and the bottom end of the hanging rod (7) is welded and fixedly installed on the steel plate (2).

5. The CFB boiler water-cooled wall ceiling hanging device according to claim 1, characterized in that: It also includes a lock nut (5) and a washer (6); The top of the boom (7) is machined with external threads. The top of the boom (7) passes through the steel structure of the upper boiler and is threadedly connected to the upper locking nut (5). The washer (6) is fitted on the boom (7) and located between the steel structure of the upper boiler and the nut (5).

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