Fixing structure of heat preservation pillow of waste heat boiler of gas turbine

Abstract

The utility model relates to the technical field of heat preservation pillow fixing, and discloses a gas turbine waste heat boiler heat preservation pillow fixing structure which comprises a pipeline, an expansion joint is arranged on one side of the outer side wall of the pipeline, an outer protection plate is arranged on one side of the expansion joint, second steel plates are fixed to the two ends of a first steel plate, and a pipe clamp is fixed to one side of the first steel plate. And the pipe clamp is mounted on the outer side wall of the pipeline. By arranging the steel plate I, the steel plate II and the like, the steel plate II can prevent the heat preservation pillow from shaking left and right, so that the heat preservation pillow is ensured to block the opening of the wall plate all the time in the operation process of the boiler, smoke is effectively prevented from entering the boiler wall to burn out the heat preservation pillow and the expansion joint, and no matter how the through-wall pipeline expands and moves, the heat preservation pillow is not damaged. The first steel plate and the second steel plate drive the heat preservation pillow to move together, deformation, inclination and dislocation of the heat preservation pillow are prevented, safety of the expansion joint and the boiler is guaranteed, and waste of smoke heat can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal insulation pillow fixing, in particular to a fixing structure of a thermal insulation pillow of a gas turbine waste heat boiler. Background Art

[0002] There are many through-wall pipes on the front wall and both side walls at the bottom of the wall panel of the gas turbine waste heat boiler body. These pipes expand downward with the heating surface of the boiler. When the boiler is running, since the through-wall pipes need to expand downward, there will be openings in the through-wall part of the wall to facilitate the smooth expansion of the through-wall pipes. In order to prevent smoke from leaking from the openings in the wall, the openings in the wall need to be sealed. In traditional structures, expansion joints are often used to seal the outside of the wall, and insulation pillows are generally used to seal and insulate the inside of the wall. The insulation pillows are clamped with the pipe clamps on the through-wall pipes and attached to the boiler side wall panels to prevent the insulation pillows from shaking and falling off.

[0003] However, during operation, the pipe clamp can only fix the insulation pillow along the axial direction of the pipe. In the circumferential direction of the pipe, the insulation pillow will rotate and dislocate due to its own slender shape and easy to be disturbed, thus failing to completely block the opening of the wall panel, causing smoke to penetrate into the insulation and wall expansion joints, burning the expansion joints and external wall panels. Utility Model Content

[0004] The utility model aims to provide a fixing structure of a heat preservation pillow of a gas turbine waste heat boiler to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixing structure of a gas turbine waste heat boiler insulation pillow, comprising a pipeline, an expansion joint is arranged on one side of the outer wall of the pipeline, an outer protective plate is arranged on one side of the expansion joint, an insulation layer is arranged on one side of the outer protective plate, and an inner protective plate is arranged on one side of the insulation layer, an insulation pillow is arranged on one side of the inner protective plate, a steel plate 1 is installed on one side of the insulation pillow, and steel plates 2 are fixed at both ends of the steel plate 1, a pipe clamp is fixed on one side of the steel plate 1, and the pipe clamp is installed on the outer wall of the pipeline.

[0006] Preferably, the second steel plate is provided with a plurality of

[0007] Preferably, an adjustment groove is provided on one side inside the second steel plate, an adjustment steel plate is movably provided inside the adjustment groove, a first fixing bolt is installed inside the adjustment steel plate, and an adjustment hole is provided inside the adjustment groove.

[0008] Preferably, a plurality of the adjustment holes are provided, and the plurality of adjustment holes are distributed at equal intervals inside the adjustment groove.

[0009] Preferably, the cross section of the adjusting steel plate is matched with the cross section of the adjusting groove, and a snap-fit ​​structure is formed between the adjusting steel plate and the adjusting groove.

[0010] Preferably, the steel plate is formed by splicing two or more steel plates, and the connection method can be welding or bolting as needed.

[0011] Preferably, a corresponding hole is provided inside the steel plate 1, and the hole cooperates with the pipeline.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the fixing structure of the heat preservation pillow of the waste heat boiler of the gas turbine not only prevents the heat preservation pillow from deformation and tilting and dislocation, realizes the adjustment of the length of the steel plate 2, but also realizes the convenience of installing the steel plate;

[0013] (1) By providing components such as steel plate 1 and steel plate 2, steel plate 2 can prevent the insulation pillow from shaking left and right, thereby ensuring that the insulation pillow always blocks the opening of the wall panel during the operation of the boiler, effectively preventing flue gas from entering the furnace wall and burning the insulation pillow and expansion joint. No matter how the through-wall pipe expands and moves, steel plate 1 and steel plate 2 drive the insulation pillow to move together to prevent the insulation pillow from deformation and tilting and dislocation, which not only ensures the safety of the expansion joint and the boiler, but also prevents the waste of flue gas heat;

[0014] (2) By providing components such as an adjustment slot, an adjustment hole, a first fixing bolt and an adjustment steel plate, the second steel plate is installed on both sides of the thermal insulation pillow during use. If a thermal insulation pillow of different thickness is encountered, the above-mentioned components can adjust the use length of the second steel plate, so that the second steel plate can be adjusted for use, thereby greatly increasing the adaptability of the fixing structure;

[0015] (3) The steel plate 1 is composed of two or more pieces, and its connection methods are various, which greatly increases the convenience of installation and use of the steel plate 1. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view structural schematic diagram of the utility model;

[0017] Figure 2 It is a side view structural schematic diagram of the utility model;

[0018] Figure 3 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 4 It is a schematic structural diagram of the steel plate of the utility model from two side views.

[0020] In the figure: 1. pipeline; 2. pipe clamp; 3. steel plate one; 4. insulation pillow; 5. inner protective plate; 6. insulation layer; 7. outer protective plate; 8. expansion joint; 9. steel plate two; 10. adjustment groove; 11. adjustment hole; 12. first fixing bolt; 13. adjustment steel plate; 14. second fixing bolt; 15. fixing block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1: Please refer to Figure 1-4 An expansion joint 8 is arranged on one side of the outer wall of the pipeline 1, an outer guard plate 7 is arranged on one side of the expansion joint 8, an insulation layer 6 is arranged on one side of the outer guard plate 7, and an inner guard plate 5 is arranged on one side of the insulation layer 6, an insulation pillow 4 is arranged on one side of the inner guard plate 5, a steel plate 3 is installed on one side of the insulation pillow 4, and steel plates 2 9 are fixed at both ends of the steel plate 3, a pipe clamp 2 is fixed on one side of the steel plate 3, and the pipe clamp 2 is installed on the outer wall of the pipeline 1, and the steel plate 3 is fixed with the pipe clamp 2. The steel plate 2 9 on one side of the steel plate 3 can prevent the insulation pillow 4 from shaking left and right, thereby ensuring that the insulation pillow 4 always blocks the opening of the wall panel during the operation of the boiler, effectively preventing smoke from entering the interior of the furnace wall and burning the insulation pillow 4 and the inner guard plate 5, and the steel plate 3 and the steel plate 2 9 have extremely small relative displacement and a larger force-bearing area with the insulation pillow 4 during operation, which greatly reduces the friction between the insulation pillow 4 and the metal structure, and effectively avoids the possibility of the insulation pillow 4 being worn out by the metal structure and failing;

[0023] There are several steel plates 9, and the symmetrically distributed steel plates 9 just wrap the two sides of the thermal insulation pillow 4 to prevent the thermal insulation pillow 4 from tilting and misaligning to the left and right, and the use effect is better;

[0024] An adjustment groove 10 is provided on one side of the inner part of the second steel plate 9, and an adjustment steel plate 13 is movably provided inside the adjustment groove 10, and a first fixing bolt 12 is installed inside the adjustment steel plate 13, and an adjustment hole 11 is provided inside the adjustment groove 10. The first fixing bolt 12 is screwed out of the adjustment hole 11, and then the adjustment steel plate 13 is pushed to a suitable position inside the adjustment groove 10 according to actual needs, and then the first fixing bolt 12 is screwed into the corresponding adjustment hole 11, so that the second steel plate 9 and the adjustment steel plate 13 are assembled together to a suitable length for use;

[0025] There are a number of adjustment holes 11, which are evenly spaced inside the adjustment slot 10, so that the steel plate 29 can be extended to a length suitable for the insulation pillow 4. When adjusting, it should be noted that in order to prevent the steel plate 29 from hitting the inner wall of the wall panel due to the expansion of the pipe 1 to the outside of the furnace during the operation of the boiler, the length of the steel plate 29 should be less than the thickness of the insulation pillow 4.

[0026] The cross section of the adjusting steel plate 13 is adapted to the cross section of the adjusting groove 10, and a snap-fit ​​structure is formed between the adjusting steel plate 13 and the adjusting groove 10. The design of the snap-fit ​​structure makes the assembly between the steel plate 9 and the adjusting steel plate 13 more stable;

[0027] The steel plate 1 3 is provided with corresponding holes inside, and the holes are matched with the pipe 1, so as to facilitate the installation of the steel plate 1 and make the installation operation more convenient;

[0028] A fixing block 15 is fixed at the middle position of the steel plate 3 , and a second fixing bolt 14 is installed inside the fixing block 15 .

[0029] Working principle: when the utility model is in use, the two steel plates 3 are clamped to the outer wall of the pipeline 1, and then the second fixing bolt 14 is passed through the fixing block 15 to install the two steel plates 3, and then the steel plate 3 is welded and fixed together with the pipe clamp 2. When in use, the steel plate 2 9 can prevent the thermal insulation pillow 4 from shaking left and right. No matter how the wall-penetrating pipeline expands and moves, the steel plates 1 3 and 2 9 drive the thermal insulation pillow 4 to move together to prevent the thermal insulation pillow 4 from deformation and tilting and dislocation, which not only ensures the safety of the expansion joint 8 and the boiler, but also prevents the waste of flue gas heat. When the boiler is running, the pipeline 1 expands and moves outside the furnace, and the steel plate 3 can squeeze the thermal insulation pillow 4, so that the thermal insulation pillow 4 is close to the inner lining of the wall panel to prevent the flue gas from entering the furnace for insulation. The extremely small relative displacement and larger force area of ​​the steel plates 1 3 and 2 9 and the thermal insulation pillow 4 during operation greatly reduce the friction between the thermal insulation pillow 4 and the metal structure, and effectively avoid the possibility of the thermal insulation pillow 4 being worn out by the metal structure and failing.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A fixing structure for a heat preservation pillow of a gas turbine waste heat boiler, comprising a pipeline (1), characterized in that: An expansion joint (8) is provided on one side of the outer wall of the pipeline (1), an outer protective plate (7) is provided on one side of the expansion joint (8), a thermal insulation layer (6) is provided on one side of the outer protective plate (7), and an inner protective plate (5) is provided on one side of the thermal insulation layer (6), a thermal insulation pillow (4) is provided on one side of the inner protective plate (5), a steel plate 1 (3) is installed on one side of the thermal insulation pillow (4), and steel plate 2 (9) is fixed at both ends of the steel plate 1 (3), a pipe clamp (2) is fixed on one side of the steel plate 1 (3), and the pipe clamp (2) is installed on the outer wall of the pipeline (1).

2. The fixing structure of the heat preservation pillow of the gas turbine waste heat boiler according to claim 1 is characterized in that: The steel plate 2 (9) is provided in plurality.

3. The fixing structure of the heat preservation pillow of a gas turbine waste heat boiler according to claim 1 is characterized in that: An adjustment groove (10) is provided on one side of the interior of the second steel plate (9), an adjustment steel plate (13) is movably provided inside the adjustment groove (10), a first fixing bolt (12) is installed inside the adjustment steel plate (13), and an adjustment hole (11) is provided inside the adjustment groove (10).

4. The fixing structure of the heat preservation pillow of the gas turbine waste heat boiler according to claim 3 is characterized in that: A plurality of the adjustment holes (11) are provided, and the plurality of the adjustment holes (11) are distributed at equal intervals inside the adjustment groove (10).

5. The fixing structure of the heat preservation pillow of the gas turbine waste heat boiler according to claim 3 is characterized by: The cross section of the adjusting steel plate (13) is matched with the cross section of the adjusting groove (10), and a snap-fit ​​structure is formed between the adjusting steel plate (13) and the adjusting groove (10).

6. The fixing structure of the heat preservation pillow of the gas turbine waste heat boiler according to claim 1 is characterized by: The steel plate 1 (3) is formed by splicing two or more steel plates, and the connection method can be welding or bolting according to needs.

7. The fixing structure of the heat preservation pillow of the gas turbine waste heat boiler according to claim 6 is characterized by: The steel plate (3) is provided with a corresponding hole inside, and the hole is matched with the pipeline (1).

Images