Detachable heat insulation structure for cylinder

Abstract

The detachable heat insulation structure comprises a first heat insulation assembly, the first heat insulation assembly comprises a bottom sealing plate, an upper surrounding plate, two lower surrounding plates and a left sealing plate, the bottom sealing plate is detachably connected with a fixing frame, and the two ends of the upper surrounding plate are detachably connected with a left upper fixing plate and a right upper fixing plate correspondingly; the two lower coamings are detachably connected to the two sides of the upper coaming correspondingly, the overall shape of the two lower coamings and the upper coaming after connection is matched with the shape of the inner wall of the barrel to form a first heat insulation cavity, the two lower coamings are detachably connected to the fixing frame, the left sealing plate is detachably connected to the upper left fixing plate and the fixing frame, and the right sealing plate is detachably connected to the lower left fixing plate and the fixing frame. The left upper fixing plate, the right upper fixing plate and the fixing frame are fixed to the inner wall of the barrel or the inner wall of equipment comprising the barrel. The detachable heat insulation structure for the barrel is simple in structure, easy to detach and convenient to maintain, and the detachable heat insulation structure can be detached while the heat insulation effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of steam superheater auxiliary equipment, and more particularly, to a detachable heat insulation structure for a cylinder. BACKGROUND

[0002] A steam superheater is a common device in industrial production, which functions to further heat steam to a superheated state to meet various process requirements. During the operation of the steam superheater, a large amount of heat is generated, and if effective heat insulation is not achieved, not only will energy be wasted, but also the safety of surrounding equipment and personnel may be affected. In particular, for a steam superheater with a working temperature of 460℃, heat insulation is even more critical.

[0003] At present, the traditional heat insulation method of the steam superheater has many drawbacks. Some steam superheaters use fixed heat insulation structures, which are difficult to disassemble after installation. When the heat insulation material needs to be replaced due to damage, it is extremely inconvenient to operate, often requiring a large amount of manpower, material resources and time, resulting in long equipment downtime and affecting production efficiency. Moreover, the performance of traditional heat insulation materials tends to decline in a long-term high-temperature environment, and the heat insulation effect gradually deteriorates. For example, some ordinary heat insulation materials will age, deform and other problems at a high temperature of 460℃, resulting in severe heat loss and increasing energy consumption costs. At the same time, due to poor heat insulation effect, the temperature of the steam superheater shell may be too high, accelerating the corrosion of the equipment shell and shortening the service life of the equipment.

[0004] In addition, when there are large openings (for example, a container cylinder is connected with a pipe) on the container wall of the steam superheater, the traditional heat insulation structure is difficult to reasonably avoid these openings and cannot achieve a closed arrangement of the heat insulation cavity, resulting in severe heat loss around the openings and further reducing the heat insulation effect and energy utilization efficiency. With the increasing requirements of industrial production on energy utilization efficiency and equipment stability, there is an urgent need for a steam superheater heat insulation device that can effectively solve the above problems. CONTENT OF THE INVENTION

[0005] Therefore, the present disclosure provides a detachable heat insulation structure for a cylinder, which has a simple structure, is easy to disassemble, is convenient to maintain, improves heat insulation performance, reduces heat loss, and thus improves the energy utilization efficiency of the steam superheater.

[0006] Specifically, the present disclosure provides a detachable heat insulation structure for a cylinder, which comprises a first heat insulation assembly, the first heat insulation assembly comprising a bottom sealing plate, an upper surrounding plate, two lower surrounding plates and a left sealing plate, the bottom sealing plate being detachably connected with a fixed frame, two ends of the upper surrounding plate in the axial direction of the cylinder being detachably connected with a left upper fixed plate and a right upper fixed plate respectively, the two lower surrounding plates being detachably connected to two sides of the upper surrounding plate in the circumferential direction of the cylinder, the two lower surrounding plates and the upper surrounding plate after being connected matching the shape of the inner wall of the cylinder to form a first heat insulation cavity, the two lower surrounding plates being detachably connected to the fixed frame, the left sealing plate being detachably connected to the left upper fixed plate and the fixed frame, the left upper fixed plate, the right upper fixed plate and the fixed frame being fixed to the inner wall of the cylinder or the inner wall of a device comprising the cylinder.

[0007] Optionally, the cylinder is connected with a connecting pipe extending in the radial direction of the cylinder; the detachable heat insulation structure further comprises an inner pipe and a second heat insulation assembly, the upper part of the inner pipe being fixed with the connecting pipe, and the lower part of the inner pipe being located in the cylinder; the second heat insulation assembly comprises a support ring plate, a surrounding cylinder and a lower sealing ring plate, the support ring plate being fixed around the outer wall of the lower part of the inner pipe, the surrounding cylinder being sleeved on the periphery of the lower part of the inner pipe, so that a second heat insulation cavity is formed between the surrounding cylinder and the lower part of the inner pipe, and the lower sealing ring plate is fixed at the bottom of the surrounding cylinder and detachably connected to the lower surface of the support ring plate; the upper surrounding plate is provided with an opening hole for the surrounding cylinder to pass through.

[0008] Optionally, the left upper fixed plate is fixed with a first connecting plate, and the upper surrounding plate and the first connecting plate are bolted; and / or the upper surrounding plate and the right upper fixed plate are bolted.

[0009] Optionally, the lower surrounding plate is detachably connected with the upper surrounding plate through a second connecting plate; the lower surrounding plate and the second connecting plate are bolted, and / or the second connecting plate and the upper surrounding plate are bolted.

[0010] Optionally, the left sealing plate is detachably connected with the fixed frame through a left lower fixed plate; the left sealing plate and the left lower fixed plate are bolted, and / or the left lower fixed plate and the fixed frame are bolted.

[0011] Optionally, the two lower surrounding plates are detachably connected with the fixed frame through two bottom end fixed plates respectively; the lower surrounding plate and the bottom end fixed plate are bolted, and / or the bottom end fixed plate and the fixed frame are bolted.

[0012] Optionally, the bottom sealing plate and the fixed frame are bolted, and / or the left sealing plate and the left upper fixed plate are bolted.

[0013] Optionally, a gap G along the axial direction (X) is left between the first heat insulation cavity and the second heat insulation cavity.

[0014] Optionally, the gap G is less than or equal to 3 mm.

[0015] Optionally, a heat insulation material is arranged in the first heat insulation cavity and the second heat insulation cavity.

[0016] Optionally, a first gasket is arranged between the left sealing plate and the left upper fixed plate, and the first gasket extends to between the left sealing plate and the left lower fixed plate.

[0017] Optionally, a second gasket is arranged between the bottom sealing plate and the fixed frame.

[0018] Compared with the prior art, the detachable heat insulation structure for the cylinder provided by the present disclosure has at least the following beneficial effects:

[0019] The detachable heat insulation structure for the cylinder of the present disclosure has a simple structure, is easy to disassemble, and is easy to maintain. The detachable structure design makes it easy to replace the heat insulation material, greatly shortens the equipment downtime maintenance time, and improves the production efficiency. The detachable heat insulation structure for the cylinder of the present disclosure can avoid large openings (openings at the cylinder connection pipe), so that the heat insulation structure can still be arranged closed even if there is a large opening in the cylinder wall of the steam superheater, effectively avoiding heat loss at the large opening, and further improving the heat insulation performance. The detachable heat insulation structure for the cylinder of the present disclosure has excellent sealing performance, effectively improves the heat insulation effect, reduces heat loss, and thus improves the energy utilization efficiency of the steam superheater. In addition, the good heat insulation effect reduces the temperature of the steam superheater shell, reduces the corrosion of high temperature on the equipment shell, and thus prolongs the service life of the equipment. The detachable heat insulation structure for the cylinder of the present disclosure optimizes the position, angle and size of the welding corner, so that the welding part is firm and reliable, and at the same time facilitates the assembly of each part, improves the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the present disclosure, the embodiments of the present disclosure will be further explained and described according to the following drawings, which are only used to more conveniently and specifically describe the embodiments of the present disclosure, but not limit the present disclosure. In the drawings:

[0021] Figure 1 is a schematic diagram of the detachable heat insulation structure for the cylinder of an embodiment of the present disclosure;

[0022] Figure 2 is Figure 1 A view in the direction of the arrows in Figure

[0023] Figure 3 is Figure 1 B view in the direction of the arrows in Figure

[0024] Figure 4 is a schematic view of a detachable heat insulation structure for a cylinder according to another embodiment of the present disclosure;

[0025] Figure 5 is Figure 4 C view in the direction of the arrows in Figure

[0026] Figure 6 is a schematic view of a second heat insulation assembly.

[0027] In the figure: 1, left end plate; 2, first gasket; 3, left upper fixed plate; 4, first connecting plate; 5, upper surrounding plate; 6, bolt; 7, nut; 8, right upper fixed plate; 9, lower surrounding plate; 10, bottom end fixed plate; 11, fixed frame; 12, bottom end plate; 13, second gasket; 14, handle; 15, second connecting plate; 16, left lower fixed plate; 17, lower end ring plate; 18, support ring plate; 19, surrounding cylinder. DETAILED DESCRIPTION

[0028] In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the specific embodiments of the present disclosure will be described in detail below with reference to the drawings. These embodiments are provided only by way of example. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work are also within the scope of protection of the present disclosure.

[0029] In the description of the present disclosure, it should be noted that the terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.

[0030] In the description of this disclosure, unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," etc., should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0031] One embodiment of this disclosure provides a detachable thermal insulation structure for a cylindrical body. For example... Figures 1 to 3 As shown, the detachable heat insulation structure includes: a bottom sealing plate 12, an upper surrounding plate 5, two lower surrounding plates 9, and a left sealing plate 1. The bottom sealing plate 12 is detachably connected to a fixing frame 11. The upper surrounding plate 5 is detachably connected to a left upper fixing plate 3 and a right upper fixing plate 8 at both ends along the axial direction X of the cylinder 101, respectively. The two lower surrounding plates 9 are detachably connected to both sides of the upper surrounding plate 5 along the circumferential direction M of the cylinder 101. The overall shape of the two lower surrounding plates 9 after being connected to the upper surrounding plate 5 matches the shape of the inner wall of the cylinder 101 to form a first heat insulation cavity S1 (e.g., ...). Figure 4 (As shown). The two lower enclosure plates 9 are detachably connected to the fixed frame 11, and the left sealing plate 1 is detachably connected to the upper left fixed plate 3 and the fixed frame 11. The upper left fixed plate 3, the upper right fixed plate 8, and the fixed frame 11 are fixed to the inner wall of the cylinder 101 or the inner wall of the equipment including the cylinder 101.

[0032] In a preferred embodiment of this disclosure, the device may include a cylindrical body 101 and a tube sheet 104 (e.g., connected to one end of the cylindrical body 101) Figure 4 (As shown). Thus, the upper left fixing plate 3 can be fixed to the inner wall of the cylinder 101, for example, by welding, while the upper right fixing plate 8 can be fixed to the inner wall of the tube sheet 104, for example, by welding. In another preferred embodiment of this disclosure, the fixing frame 11 can be fixed to both the inner wall of the cylinder 101 and the inner wall of the tube sheet 104, for example, by welding.

[0033] The detachable heat insulation structure of the present disclosure is used in the following way: first, the upper left fixed plate 3, the upper right fixed plate 8, and the fixed frame 11 are fixed to the inner wall of the cylinder and / or the inner wall of the tube sheet, then the upper sealing plate 5 is connected to the upper left fixed plate 3 and the upper right fixed plate 8, then the lower surrounding plate 9 is connected to the upper surrounding plate 5 and the fixed frame 11, then the bottom sealing plate 12 is connected to the fixed frame 11, and finally the left sealing plate 1 is connected to the upper left fixed plate 3 and the fixed frame 11. When it is necessary to replace the heat insulation material in the first heat insulation cavity S1 or to overhaul the heat insulation structure, the left sealing plate 1, the bottom sealing plate 12, the lower surrounding plate 9, and the upper sealing plate 5 can be sequentially removed. In a preferred embodiment, handles 14 are provided on the left sealing plate 1 and the bottom sealing plate 12. The number of handles 14 can be set as needed, for example, two handles 14 can be provided on the left sealing plate 1, and one or two handles 14 can be provided on the bottom sealing plate 12.

[0034] In a preferred embodiment of the present disclosure, as shown in Figures 4 to 6 The cylinder 101 is connected with a connecting pipe 102 extending along the radial direction R of the cylinder. The detachable heat insulation structure further comprises an inner pipe 103 and a second heat insulation assembly. The upper part of the inner pipe 103 is fixed to the connecting pipe 102, and the lower part of the inner pipe 103 is located in the cylinder 101. The second heat insulation assembly comprises a support ring plate 18, a surrounding cylinder 19, and a lower sealing ring plate 17. The support ring plate 18 is fixed around the outer wall of the lower part of the inner pipe 103. The surrounding cylinder 19 is sleeved around the outer periphery of the lower part of the inner pipe 103, so that the second heat insulation cavity S2 is formed between the surrounding cylinder 19 and the lower part of the inner pipe 103. The lower sealing ring plate 17 is fixed at the bottom of the surrounding cylinder 19 and is detachably connected to the lower surface of the support ring plate 18. The upper surrounding plate 5 is provided with an opening for the surrounding cylinder 19 to pass through.

[0035] When the cylinder 101 is connected with the connecting pipe 102, there is a large opening in the wall of the cylinder 101 at the connection, which is extremely prone to heat loss and reduces the heat insulation effect. The detachable heat insulation structure of the present disclosure forms a second heat insulation cavity S2 around the large opening by providing a second heat insulation assembly, so that the heat loss is greatly reduced while achieving detachability, and the heat insulation effect is significantly improved. In one example, the lower sealing ring plate 17 and the support ring plate 18 are connected by bolts, so that when it is necessary to overhaul or replace the heat insulation material, after the left sealing plate 1, the bottom sealing plate 12, the lower surrounding plate 9, and the upper sealing plate 5 are removed, the surrounding cylinder 19 can be removed.

[0036] In a preferred embodiment of the present disclosure, a gap G along the axial direction X is left between the first heat insulation cavity S1 and the second heat insulation cavity S2. In a preferred example, the gap G is less than or equal to 3 mm, which can take into account the convenience of installation of the first heat insulation assembly and the second heat insulation assembly, while ensuring that the first heat insulation cavity S1 and the second heat insulation cavity S2 do not affect each other due to thermal expansion during use.

[0037] In a preferred embodiment of the present disclosure, the first connecting plate 4 is fixed to the left upper fixing plate 3, and the upper enclosing plate 5 is bolted to the first connecting plate 4.

[0038] In a preferred embodiment of the present disclosure, the upper enclosing plate 5 is bolted to the right upper fixing plate 8.

[0039] In a preferred embodiment of the present disclosure, the lower enclosing plate 9 is detachably connected to the upper enclosing plate 5 through the second connecting plate 15. The lower enclosing plate 9 is bolted to the second connecting plate 15, and / or the second connecting plate 15 is bolted to the upper enclosing plate 5.

[0040] In a preferred embodiment of the present disclosure, the left enclosing plate 1 is detachably connected to the fixed frame 11 through the left lower fixing plate 16. The left enclosing plate 1 is bolted to the left lower fixing plate 16, and / or the left lower fixing plate 16 is bolted to the fixed frame 11.

[0041] In a preferred embodiment of the present disclosure, the two lower enclosing plates 9 are respectively detachably connected to the fixed frame 11 through the two bottom end fixing plates 10. The lower enclosing plate 9 is bolted to the bottom end fixing plate 10, and / or the bottom end fixing plate 10 is bolted to the fixed frame 11.

[0042] In a preferred embodiment of the present disclosure, the bottom enclosing plate 12 is bolted to the fixed frame 11.

[0043] In a preferred embodiment of the present disclosure, the left enclosing plate 1 is bolted to the left upper fixing plate 3.

[0044] In a preferred embodiment of the present disclosure, the heat insulation material in the first heat insulation cavity S1 and the second heat insulation cavity S2 is a refractory fiber felt. The refractory fiber felt has good high-temperature resistance and can maintain stable heat insulation performance at a high temperature of 460℃, effectively reducing heat loss and improving energy utilization efficiency.

[0045] In a preferred embodiment of the present disclosure, a first gasket 2 is arranged between the left enclosing plate 1 and the left upper fixing plate 3, and the first gasket 2 extends to between the left enclosing plate 1 and the left lower fixing plate 16. In another preferred embodiment of the present disclosure, a second gasket 13 is arranged between the bottom enclosing plate 12 and the fixed frame 11. The first gasket 2 and the second gasket can be made of the same or different materials, which are both good in toughness and high-temperature resistance, and can effectively prevent heat leakage.

[0046] In the above embodiments, high-strength bolts 6 and nuts 7 are used for bolt connection, which can achieve tight connection and facilitate disassembly and installation. Of course, other detachable connection methods, such as buckle connection, can also be used.

[0047] It should be understood that the drawings in the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures can refer to the general design. The devices and / or structures in various embodiments provided in the present disclosure can be combined, modified and / or changed to form new technical solutions. These technical solutions should also be included in the scope of protection required by the present disclosure without creative labor.

[0048] It should be understood that the specific examples provided in the embodiments provided herein are only for detailed description of the embodiments of the present disclosure and not a limitation of the present disclosure. The embodiments in the present disclosure can be practiced without these specific examples. In some embodiments, the structures and / or technologies well known to those skilled in the art are not shown in detail in order not to obscure the understanding of the present disclosure.

[0049] Although the preferred embodiments of the present disclosure have been shown and described herein, it will be readily apparent to those skilled in the art that these embodiments are provided by way of example only. Various changes, modifications and alternatives will occur to those skilled in the art without departing from the present disclosure. It should be understood that various alternatives to the embodiments of the present disclosure described herein are optionally used to implement the present disclosure. It is intended to define the scope of the present disclosure by the appended claims and to encompass the devices, structures and equivalents thereof within the scope of these claims.

Claims

1. A detachable heat insulating structure for a cylinder, characterized by, The first heat insulation assembly comprises: a bottom sealing plate (12) which is detachably connected with a fixed frame (11); an upper surrounding plate (5) whose two ends along the axial direction (X) of the cylinder body (101) are respectively detachably connected with a left upper fixed plate (3) and a right upper fixed plate (8); two lower surrounding plates (9) which are respectively detachably connected to the two sides of the upper surrounding plate (5) along the circumferential direction (M) of the cylinder body (101), and the overall shape of the two lower surrounding plates (9) after being connected with the upper surrounding plate (5) matches the shape of the inner wall of the cylinder body (101) to form a first heat insulation cavity (S1); the two lower surrounding plates (9) are detachably connected to the fixed frame (11); and a left sealing plate (1) which is detachably connected to the left upper fixed plate (3) and the fixed frame (11); wherein the left upper fixed plate (3), the right upper fixed plate (8) and the fixed frame (11) are fixed to the inner wall of the cylinder body (101) or the inner wall of a device comprising the cylinder body (101).

2. The detachable insulation structure for a cylinder according to claim 1, characterized by, wherein the cylinder body (101) is connected with a connecting pipe (102) extending along the radial direction (R) of the cylinder body; the detachable heat insulation structure further comprises an inner pipe (103) and a second heat insulation assembly, the upper part of the inner pipe (103) is fixed with the connecting pipe (102), and the lower part of the inner pipe (103) is located in the cylinder body (101); the second heat insulation assembly comprises: a support ring plate (18) which is fixed around the outer wall of the lower part of the inner pipe (103); a surrounding cylinder (19) which is sleeved on the periphery of the lower part of the inner pipe (103) so that a second heat insulation cavity (S2) is formed between the surrounding cylinder (19) and the lower part of the inner pipe (103); and a lower sealing ring plate (17) which is fixed at the bottom of the surrounding cylinder (19) and detachably connected to the lower surface of the support ring plate (18); wherein the upper surrounding plate (5) is provided with an opening hole for the surrounding cylinder (19) to pass through.

3. The detachable thermal insulation structure for a cylinder according to claim 1 or 2, characterized by, wherein the left upper fixed plate (3) is fixed with a first connecting plate (4), and the upper surrounding plate (5) is bolted with the first connecting plate (4); and / or the upper surrounding plate (5) is bolted with the right upper fixed plate (8).

4. The detachable heat shield structure for a cylinder according to claim 1 or 2, characterized by wherein the lower surrounding plate (9) is detachably connected with the upper surrounding plate (5) through a second connecting plate (15); the lower surrounding plate (9) is bolted with the second connecting plate (15), and / or the second connecting plate (15) is bolted with the upper surrounding plate (5).

5. The detachable thermal insulation structure for a cylinder according to claim 1 or 2, characterized by, wherein the left sealing plate (1) is detachably connected with the fixed frame (11) through a left lower fixed plate (16); the left sealing plate (1) is bolted with the left lower fixed plate (16), and / or the left lower fixed plate (16) is bolted with the fixed frame (11).

6. The detachable thermal insulation structure for a cylinder according to claim 1 or 2, characterized by, The two lower surrounding plates (9) are respectively detachably connected with the fixed frame (11) through two bottom end fixed plates (10); the lower surrounding plate (9) and the bottom end fixed plate (10) are bolted, and / or the bottom end fixed plate (10) and the fixed frame (11) are bolted.

7. The detachable thermal insulation structure for a cylinder according to claim 1 or 2, characterized by, The bottom sealing plate (12) and the fixed frame (11) are bolted, and / or the left sealing plate (1) and the left upper fixed plate (3) are bolted.

8. The detachable insulation structure for a cylinder according to claim 2, wherein The first heat insulation cavity (S1) and the second heat insulation cavity (S2) are left with a gap G along the axial direction (X); or The first heat insulation cavity (S1) and the second heat insulation cavity (S2) are left with a gap G along the axial direction (X), and the gap G is less than or equal to 3 mm.

9. The detachable insulation structure for a cylinder according to claim 2, wherein The first heat insulation cavity (S1) and the second heat insulation cavity (S2) are provided with heat insulation materials.

10. The detachable insulation structure for a cylinder according to claim 5, wherein The left sealing plate (1) and the left upper fixed plate (3) are provided with a first gasket (2), the first gasket (2) extends between the left sealing plate (1) and the left lower fixed plate (16); and / or The bottom sealing plate (12) and the fixed frame (11) are provided with a second gasket (13).

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