Novel power plant steam pipeline heat preservation structure

Abstract

The novel power plant steam pipeline heat preservation structure comprises a steam pipeline, a base, a first lifting structure, a second lifting structure, a heat preservation structure and a protection structure, an outer protection plate is tightly attached to the periphery of the steam pipeline, a lifting plate is arranged above the base, a vertical rod is welded to the bottom of the lifting plate, and a rubber block is bonded to the bottom end of the vertical rod; the first lifting structure is used for driving the outer protective plate below to lift, the second lifting structure is used for driving the lifting plate to lift, the heat preservation structure comprises a heat insulation coating, a heat preservation layer and damp-proof aluminum foil, and the protection structure is used for protecting expansion and impact of the steam pipeline. The steam pipeline is subjected to heat preservation through four heat preservation measures, more efficient heat preservation materials are selected, the heat preservation effect is improved, and the thickness is reduced; pipeline displacement or vibration caused by bracket displacement can be prevented, and the stability of the system is ensured; and the outer protective plate can move outwards due to thermal expansion, so that the situation that large pressure is generated due to the fact that the outer protective plate always clings to the steam pipeline is avoided, and impact force on the steam pipeline can be protected.

Description

Technical Field

[0001] The invention relates to the technical field of steam pipelines, and in particular to a novel thermal insulation structure of steam pipelines in power plants. Background Art

[0002] The steam pipeline of a power plant is a pipeline system used to transport steam, which usually consists of the following parts: main steam pipeline, auxiliary pipeline (including reheat steam pipeline, extraction pipeline, etc.), adjustment for different process requirements and systems, valves and regulating devices, insulation materials, safety devices, and pipeline supports. Steam pipelines play a key role in power plants and directly affect power generation efficiency and equipment safety.

[0003] However, the existing steam pipe insulation structure is relatively simple, and the insulation effect needs to be improved; and it does not take into account the large thermal expansion of the pipe in a high temperature environment, which may cause uneven force on the pipe; the bracket of the steam pipe and the insulation structure as a whole cannot be adjusted and is prone to displacement, which may cause the pipe to move or vibrate, affecting the stability of the system. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a new type of thermal insulation structure for steam pipes in power plants.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A novel power plant steam pipeline insulation structure comprises: a steam pipeline, the outer periphery of which is closely attached to an outer protective plate, and the outer protective plates are provided with four;

[0007] A base, wherein a lifting plate is horizontally arranged above the base, a vertical rod is vertically welded to the bottom of the lifting plate, and a rubber block is bonded to the bottom end of the vertical rod;

[0008] a first lifting structure and a second lifting mechanism, wherein the first lifting structure is used to drive the outer guard plate below to rise and fall, and the second lifting mechanism is used to drive the lifting plate to rise and fall;

[0009] A thermal insulation structure, comprising a thermal insulation coating, a thermal insulation layer and a moisture-proof aluminum foil;

[0010] A protective structure is provided, wherein the protective structure is used to protect a steam pipe from expansion and impact.

[0011] As a further technical solution of the present invention, the four outer protective plates are evenly distributed along the circumference of the steam pipe, a plurality of vertical rods are provided and evenly distributed at the bottom of the lifting plate, and a through hole is opened through the base.

[0012] As a further technical solution of the present invention, the number, position and diameter of the through holes match the vertical rod, the vertical rod and the through holes are slidably connected, the four corners of the top of the base are vertically welded with limit rods, and the four limit rods all pass through the lifting plate and are slidably connected to the lifting plate.

[0013] As a further technical solution of the present invention, the first lifting structure includes a second sleeve column and a second telescopic column, the second sleeve column is vertically welded to one side of the top of the base, the bottom of the second sleeve column is vertically rotatably connected to a screw rod, the second telescopic column is sleeved on the outer periphery of the screw rod and is connected to the screw rod by a thread, the top of the second telescopic column extends out of the second sleeve column and is slidably connected to the second sleeve column, the top of the second telescopic column is welded to the bottom of the outer guard plate below, a driven bevel gear is welded to the bottom end of the screw rod, a driving bevel gear is meshed on the side of the driven bevel gear, a connecting rod is horizontally welded at the center of the driving bevel gear, the connecting rod passes through the second sleeve column and is rotatably connected to the second sleeve column, a turntable is welded to the other end of the connecting rod, and a hand handle is horizontally welded to one edge of one side of the turntable.

[0014] The handle is used to drive the turntable to rotate, and the turntable drives the active bevel gear to rotate through the connecting rod. The active bevel gear drives the lead screw to rotate through the driven bevel gear, and drives the second telescopic column to move upward on the lead screw. The second telescopic column drives the outer guard plate below to rise until it is close to the bottom of the steam pipe. The height of the bracket can be adjusted to adapt to different steam pipes and has a wider range of applications.

[0015] As a further technical solution of the present invention, a first set of columns is vertically welded on one side of the top of the base, a first telescopic column is inserted and slid inside the first set of columns, the top of the first telescopic column is welded to the bottom of the outer guard plate below, and the same connecting plate is horizontally welded between the top of the side surfaces of the first telescopic column and the second telescopic column.

[0016] As a further technical solution of the present invention, the second lifting mechanism includes a first rack and a second rack, a vertical plate is welded on the top of the base, one side of the vertical plate is horizontally rotatably connected to a support shaft, and the other side of the support shaft is welded with a gear, the first rack and the second rack are respectively vertically meshed with the two sides of the gear and are arranged alternately, a mounting block is welded on the bottom of the first rack, and the mounting block is welded to the top of the lifting plate, a connecting rod is welded on the top of the second rack, and the other end of the connecting rod is welded to the side of the connecting plate.

[0017] When the second telescopic column rises, it drives the connecting plate to rise, and the connecting plate drives the second rack to rise through the connecting rod, and the second rack drives the gear to rotate counterclockwise, and the gear drives the first rack to move downward, and the first rack drives the lifting plate to move downward through the mounting block, and the lifting plate drives the rubber block to move downward through the vertical rod until it touches the ground, thereby increasing the friction between the entire bracket and the ground, preventing displacement from causing displacement or vibration of the pipeline, and ensuring the stability of the system; and the position of the bracket is fixed by the driving force of the height adjustment of the outer guard plate, without the need for additional operations, saving time and effort.

[0018] As a further technical solution of the present invention, the thermal insulation coating, the heat preservation layer and the moisture-proof aluminum foil are sequentially arranged on the periphery of the steam pipe from the inside to the outside, the thermal insulation coating adopts aluminum silicate coating, the heat preservation layer adopts modified polystyrene, and the outer protective plate adopts galvanized steel.

[0019] The steam pipe is insulated by using four insulation measures: thermal insulation coating, thermal insulation layer, moisture-proof aluminum foil and outer protective plate, and more efficient insulation materials are selected to improve the insulation effect and reduce the thickness.

[0020] As a further technical solution of the present invention, the protective structure includes an anti-collision plate and a spring, support plates are horizontally welded on opposite sides of the first telescopic column and the second telescopic column, and the other ends of the four support plates are welded with the same arc plate, the top and both sides of the arc plate are penetrated and slidably connected with a sliding rod, the spring is welded between the sliding rod and the outer guard plate, the anti-collision plate is welded to the other end of the sliding rod, and the sliding rod is provided with multiple and evenly distributed in the horizontal direction.

[0021] When the steam pipe expands thermally, it drives the outer guard plate to move outward. The outer guard plate can move outward for a certain distance to avoid always being close to the steam pipe and exerting a large pressure on it, so that the force on the pipe is more evenly distributed. When external force hits the anti-collision plate, the anti-collision plate drives the sliding rod to move inward to squeeze the spring to cause it to deform, thereby buffering the impact force and avoiding direct impact on the steam pipe, thereby protecting the steam pipe.

[0022] The beneficial effects of the present invention are as follows: the steam pipe is insulated by four-layer insulation measures, and more efficient insulation materials are selected, thereby improving the insulation effect and reducing the thickness; the height of the bracket can be adjusted to adapt to different steam pipes, with a wider range of applications, and the bracket can be prevented from being displaced to cause displacement or vibration of the pipe, thereby ensuring the stability of the system, and the position of the bracket is fixed by the driving force of the height adjustment of the outer guard plate, without the need for additional operations, saving time and effort; the outer guard plate can move outward due to thermal expansion, avoiding it from always being close to the steam pipe and exerting a large pressure on it, making the pipe more evenly stressed, and can buffer the impact force to protect the steam pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of a novel thermal insulation structure for steam pipes in power plants proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the bottom view of a novel thermal insulation structure for steam pipes in power plants proposed by the present invention;

[0025] Figure 3 This is a partial bottom-up structural schematic diagram of a novel power plant steam pipeline insulation structure proposed by the present invention;

[0026] Figure 4 A partial side structural schematic diagram of a novel thermal insulation structure for steam pipes in power plants proposed by the present invention;

[0027] Figure 5 A schematic diagram of the local structure of a new type of thermal insulation structure for steam pipes in power plants proposed by the present invention;

[0028] Figure 6 This is a schematic cross-sectional diagram of a steam pipeline of a new type of power plant steam pipeline insulation structure proposed by the present invention.

[0029] In the figure: 1. anti-collision plate; 2. first set of columns; 3. lifting plate; 4. limit rod; 5. base; 6. vertical plate; 7. support shaft; 8. first rack; 9. mounting block; 10. gear; 11. second rack; 12. connecting rod; 13. second set of columns; 14. steam pipe; 15. sliding rod; 16. arc plate; 17. outer guard plate; 18. spring; 19. support plate; 20. connecting plate; 21. through hole; 22. vertical rod; 23. rubber block; 24. first telescopic column; 25. second telescopic column; 26. hand handle; 27. turntable; 28. active bevel gear; 29. ​​screw; 30. driven bevel gear; 31. connecting rod; 32. thermal insulation coating; 33. thermal insulation layer; 34. moisture-proof aluminum foil. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] Please see attached Figure 1 -Attached Figure 6 A novel thermal insulation structure of a steam pipe in a power plant includes: a steam pipe 14, an outer protective plate 17 is closely attached to the outer periphery of the steam pipe 14, and four outer protective plates 17 are provided;

[0032] A base 5, a lifting plate 3 is horizontally arranged above the base 5, a vertical rod 22 is vertically welded to the bottom of the lifting plate 3, and a rubber block 23 is bonded to the bottom end of the vertical rod 22;

[0033] A first lifting structure and a second lifting mechanism, the first lifting structure is used to drive the outer guard plate 17 below to rise and fall, and the second lifting mechanism is used to drive the lifting plate 3 to rise and fall;

[0034] A heat-insulating structure, the heat-insulating structure comprising a heat-insulating coating 32, a heat-insulating layer 33 and a moisture-proof aluminum foil 34;

[0035] The protective structure is used to protect the steam pipe 14 from expansion and impact.

[0036] Please see attached Figure 2 and 3 In a preferred embodiment, four outer guard plates 17 are evenly distributed along the circumference of the steam pipe 14, a plurality of vertical rods 22 are provided and evenly distributed at the bottom of the lifting plate 3, and a through hole 21 is opened through the base 5.

[0037] Please see attached Figure 2 and 3 In a preferred embodiment, the number, position and diameter of the through holes 21 match the vertical rods 22, the vertical rods 22 and the through holes 21 are slidably connected, the four corners of the top of the base 5 are vertically welded with limit rods 4, and the four limit rods 4 all pass through the lifting plate 3 and are slidably connected to the lifting plate 3.

[0038] The four limiting rods 4 limit the lifting and lowering of the lifting plate 3 so that it cannot deviate.

[0039] Please see attached Figure 4 and 5 In a preferred embodiment, the first lifting structure includes a second set of columns 13 and a second telescopic column 25. The second set of columns 13 is vertically welded to one side of the top of the base 5. The bottom of the second set of columns 13 is vertically rotatably connected to a screw rod 29. The second telescopic column 25 is sleeved on the outer periphery of the screw rod 29 and is threadedly connected to the screw rod 29. The top of the second telescopic column 25 extends out of the second set of columns 13 and is slidably connected to the second set of columns 13. The top of the second telescopic column 25 is welded to the bottom of the outer guard plate 17 below.

[0040] Please see attached Figure 4 and 5 In a preferred embodiment, a driven bevel gear 30 is welded to the bottom end of the screw rod 29, and a driving bevel gear 28 is meshed on the side of the driven bevel gear 30. A connecting rod 31 is horizontally welded at the center of the driving bevel gear 28. The connecting rod 31 passes through the second set of columns 13 and is rotatably connected to the second set of columns 13. A turntable 27 is welded to the other end of the connecting rod 31, and a hand handle 26 is horizontally welded to one side edge of the turntable 27.

[0041] Please see attached Figure 5In a preferred embodiment, a first set of columns 2 is vertically welded to one side of the top of the base 5, a first telescopic column 24 is inserted and slid inside the first set of columns 2, the top of the first telescopic column 24 is welded to the bottom of the outer guard plate 17 below, and a connecting plate 20 is horizontally welded between the top of the side of the first telescopic column 24 and the second telescopic column 25.

[0042] When the second telescopic column 25 is raised or lowered, it drives the first telescopic column 24 to be raised or lowered together through the connecting plate 20, thereby driving the outer guard plate 17 to be raised or lowered together.

[0043] Please see attached Figure 1 and 2 In a preferred embodiment, the second lifting mechanism includes a first rack 8 and a second rack 11, a vertical plate 6 is welded on the top of the base 5, one side of the vertical plate 6 is horizontally rotatably connected to a support shaft 7, and a gear 10 is welded on the other side of the support shaft 7, and the first rack 8 and the second rack 11 are respectively vertically meshed with the two sides of the gear 10 and are alternately arranged.

[0044] The vertical plate 6 provides support for the support shaft 7 , and the support shaft 7 provides support for the gear 10 .

[0045] Please see attached Figure 1 and 2 In a preferred embodiment, a mounting block 9 is welded to the bottom of the first rack 8, the mounting block 9 is welded to the top of the lifting plate 3, a connecting rod 12 is welded to the top of the second rack 11, and the other end of the connecting rod 12 is welded to the side of the connecting plate 20.

[0046] Please see attached Figure 6 In a preferred embodiment, the thermal insulation coating 32, the thermal insulation layer 33 and the moisture-proof aluminum foil 34 are sequentially arranged on the periphery of the steam pipe 14 from the inside to the outside, the thermal insulation coating 32 adopts aluminum silicate coating, the thermal insulation layer 33 adopts modified polystyrene, and the outer protective plate 17 adopts galvanized steel.

[0047] Please see attached Figure 1 and 3 In a preferred embodiment, the protective structure includes an anti-collision plate 1 and a spring 18, support plates 19 are horizontally welded on opposite sides of the first telescopic column 24 and the second telescopic column 25, and the other ends of the four support plates 19 are welded with the same arc plate 16, the top and both sides of the arc plate 16 are penetrated and slidably connected with a sliding rod 15, the spring 18 is welded between the sliding rod 15 and the outer guard plate 17, the anti-collision plate 1 is welded to the other end of the sliding rod 15, and the sliding rod 15 is provided with multiple and evenly distributed in the horizontal direction.

[0048] The support plate 19 provides support for the arc plate 16 so that the arc plate 16 can be lifted and lowered together with the first telescopic column 24 and the second telescopic column 25 . The arc plate 16 provides support for the movement of the mutual inductor 15 .

[0049] From the above description, it can be seen that the above embodiment of the present invention achieves the following technical effects: the steam pipe 14 is insulated by using the four-layer insulation measures of the heat insulation coating 32, the insulation layer 33, the moisture-proof aluminum foil 34 and the outer protective plate 17, and more efficient insulation materials are selected, thereby improving the insulation effect and reducing the thickness;

[0050] Move the bracket to the end of the steam pipe 14, and then align the entire bracket with the steam pipe 14 so that the four outer guard plates 17 are located around the steam pipe 14. According to the height of the steam pipe 14, use the handle 26 to drive the turntable 27 to rotate, and the turntable 27 drives the active bevel gear 28 to rotate through the connecting rod 3112. The active bevel gear 28 drives the screw rod 29 to rotate through the driven bevel gear 30, and drives the second telescopic column 25 to move upward on the screw rod 29. The second telescopic column 25 drives the outer guard plate 17 below to rise until it is close to the bottom of the steam pipe 14. The height of the bracket can be adjusted to adapt to different steam pipes 14, and the application range is wider;

[0051] When the second telescopic column 25 rises, it drives the connecting plate 20 to rise, and the connecting plate 20 drives the second rack 11 to rise through the connecting rod 3112, and the second rack 11 drives the gear 10 to rotate counterclockwise, and the gear 10 drives the first rack 8 to move downward, and the first rack 8 drives the lifting plate 3 to move downward through the mounting block 9, and the lifting plate 3 drives the rubber block 23 to move downward through the vertical rod 22 until it touches the ground, thereby increasing the friction between the entire bracket and the ground, preventing displacement from causing displacement or vibration of the pipeline, and ensuring the stability of the system; and the position of the bracket is fixed by the driving force of the height adjustment of the outer guard plate 17, without the need for additional operations, saving time and effort;

[0052] When the steam pipe 14 expands due to heat, the outer guard plate 17 moves outward, and the outer guard plate 17 can move outward for a certain distance to avoid always being close to the steam pipe 14 and exerting a large pressure on it, so that the pipe is more evenly stressed;

[0053] When external force hits the anti-collision plate 1 , the anti-collision plate 1 drives the slide bar 15 to move inward to squeeze the spring 18 to deform it, thereby buffering the impact force and avoiding direct impact on the steam pipe 14 , thereby protecting the steam pipe 14 .

[0054] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0055] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of power plant steam pipeline insulation structure, characterized in that: include: A steam pipe (14), wherein an outer protective plate (17) is tightly attached to the outer periphery of the steam pipe (14), and four outer protective plates (17) are provided; A base (5), a lifting plate (3) is horizontally arranged above the base (5), a vertical rod (22) is vertically welded to the bottom of the lifting plate (3), and a rubber block (23) is bonded to the bottom end of the vertical rod (22); a first lifting structure and a second lifting mechanism, wherein the first lifting structure is used to drive the outer guard plate (17) below to move up and down, and the second lifting mechanism is used to drive the lifting plate (3) to move up and down; A heat-insulating structure, the heat-insulating structure comprising a heat-insulating coating (32), a heat-insulating layer (33) and a moisture-proof aluminum foil (34); A protective structure is provided, the protective structure being used to protect a steam pipe (14) from expansion and impact.

2. A novel thermal insulation structure for steam pipelines in power plants according to claim 1, characterized in that: The four outer guard plates (17) are evenly distributed along the circumference of the steam pipe (14), a plurality of vertical rods (22) are provided and evenly distributed at the bottom of the lifting plate (3), and a through hole (21) is opened through the base (5).

3. A novel thermal insulation structure for steam pipelines in power plants according to claim 2, characterized in that: The number, position and diameter of the through holes (21) all match those of the vertical rods (22); the vertical rods (22) and the through holes (21) are slidably connected; the four corners of the top of the base (5) are vertically welded with limit rods (4); and the four limit rods (4) all penetrate the lifting plate (3) and are slidably connected to the lifting plate (3).

4. A novel thermal insulation structure for steam pipelines in power plants according to claim 1, characterized in that: The first lifting structure comprises a second sleeve column (13) and a second telescopic column (25), wherein the second sleeve column (13) is vertically welded to one side of the top of the base (5), the bottom of the second sleeve column (13) is vertically rotatably connected to a screw rod (29), the second telescopic column (25) is sleeved on the outer periphery of the screw rod (29) and is connected to the screw rod (29) by a thread, the top end of the second telescopic column (25) extends out of the second sleeve column (13) and is slidably connected to the second sleeve column (13), and the top end of the second telescopic column (25) is welded to the bottom of the outer guard plate (17) below.

5. A novel thermal insulation structure for steam pipelines in power plants according to claim 4, characterized in that: A driven bevel gear (30) is welded to the bottom end of the screw rod (29), a driving bevel gear (28) is meshed on the side of the driven bevel gear (30), a connecting rod (31) is horizontally welded at the center of the driving bevel gear (28), the connecting rod (31) passes through the second sleeve column (13) and is rotatably connected to the second sleeve column (13), a rotating disk (27) is welded to the other end of the connecting rod (31), and a hand-held handle (26) is horizontally welded to one side edge of the rotating disk (27).

6. A novel thermal insulation structure for steam pipelines in power plants according to claim 5, characterized in that: A first set of columns (2) is vertically welded to one side of the top of the base (5); a first telescopic column (24) is inserted and slidably connected inside the first set of columns (2); the top of the first telescopic column (24) is welded to the bottom of the outer guard plate (17) below; and a connecting plate (20) is horizontally welded between the tops of the sides of the first telescopic column (24) and the second telescopic column (25).

7. A novel thermal insulation structure for steam pipelines in power plants according to claim 6, characterized in that: The second lifting mechanism comprises a first rack (8) and a second rack (11); a vertical plate (6) is welded to the top of the base (5); one side of the vertical plate (6) is horizontally rotatably connected to a support shaft (7); the other side of the support shaft (7) is welded to a gear (10); the first rack (8) and the second rack (11) are respectively vertically meshed with the two sides of the gear (10) and are arranged alternately.

8. A novel thermal insulation structure for steam pipelines in power plants according to claim 7, characterized in that: A mounting block (9) is welded to the bottom of the first rack (8), and the mounting block (9) is welded to the top of the lifting plate (3); a connecting rod (12) is welded to the top of the second rack (11), and the other end of the connecting rod (12) is welded to the side of the connecting plate (20).

9. The novel thermal insulation structure of steam pipeline in power plant according to claim 1 is characterized in that: The heat-insulating coating (32), the thermal insulation layer (33) and the moisture-proof aluminum foil (34) are sequentially arranged on the outer periphery of the steam pipe (14) from the inside to the outside, the heat-insulating coating (32) is made of aluminum silicate paint, the thermal insulation layer (33) is made of modified polystyrene, and the outer protective plate (17) is made of galvanized steel.

10. A novel thermal insulation structure for steam pipelines in power plants according to claim 6, characterized in that: The protective structure comprises an anti-collision plate (1) and a spring (18); support plates (19) are horizontally welded on opposite sides of the first telescopic column (24) and the second telescopic column (25); and the other ends of the four support plates (19) are welded with the same arc plate (16); the top and both sides of the arc plate (16) are penetrated and slidably connected with a sliding rod (15); the spring (18) is welded between the sliding rod (15) and the outer guard plate (17); the anti-collision plate (1) is welded to the other end of the sliding rod (15); and the sliding rod (15) is provided with a plurality of sliding rods that are evenly distributed in the transverse direction.

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