Large-diameter pipeline through-wall sealing structure

Abstract

The utility model belongs to the technical field of pressure pipelines, and particularly relates to a large-diameter pipeline through-wall sealing structure, which comprises two pieces of positioning angle iron welded with an embedded steel plate on a wall body to position a through-wall structure; the two cover plates are fixed to the positioning angle iron through nuts and bolts to form an integral through-wall detachable frame, and the integral through-wall detachable frame is filled with waterproof heat preservation filler; the two sealing piece pressing plates and the sealing piece sealing plate form a sealing groove, so that the pre-compressed sealing ring filled with the sealing ring filler is pressed and positioned; and one side of each sliding pressing plate is tightly attached to the pre-compression sealing ring, the other side of each sliding pressing plate is welded to the supporting ring plate, and on the premise that sealing is guaranteed, large lateral displacement of the pipeline is achieved through the flexible design of the through-wall structure.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pressure pipeline technical field, especially a large -diameter pipeline wall -penetrating sealing structure. BACKGROUND

[0002] At present, the wall -penetrating structure of large -diameter pipeline is generally adopted in the industry, and the radial deformation and axial displacement caused by temperature are generally considered, but for engine test equipment, nuclear industry equipment and other fields, the working condition of high temperature and large temperature gradient exists in the large -diameter pipeline, especially for the connecting pipeline of the muffler tower, the pipeline generally exists larger lateral displacement, and the current drawing method cannot meet the working condition, and the pipeline cannot be released under the condition of larger lateral displacement, so that the stress concentration appears at the contact position of the pipeline and the wall hole, and the wall body is damaged or the pipeline is deformed irreversibly. UTILITY MODEL CONTENT

[0003] The utility model technical scheme is designed in view of the deficiencies in the above-mentioned traditional wall -penetrating sealing structure, and the purpose is that the pipeline can realize larger lateral displacement under the premise of ensuring sealing by using the flexible design of the wall -penetrating structure under the working environment of large temperature gradient and larger lateral displacement, the stress concentration at the contact position of the pipeline and the wall hole is avoided, the wall body is damaged or the pipeline is deformed, the large temperature gradient pipeline engineering design is facilitated, the engineering noise is reduced, and the pipeline engineering reliability is improved.

[0004] The technical scheme of the utility model comprises:

[0005] A large -diameter pipeline wall -penetrating sealing structure, the sealing structure comprises:

[0006] Two positioning angle irons 3 are welded with the embedded steel plate 2 on the wall body 1 to position the wall -penetrating structure;

[0007] Two cover plates 6 are fixed with the positioning angle iron 3 through the nut 5 and the bolt 4, and form an integral wall -penetrating detachable frame, and the integral wall -penetrating detachable frame is filled with waterproof heat -insulating filler 7;

[0008] Two sealing piece pressing plates 8 are tightly positioned by forming a sealing groove with the sealing piece sealing plate 11 to the pre -compressed sealing ring 10 filled with sealing ring filler 9;

[0009] Two sliding pressing plates 12 are tightly attached to the pre -compressed sealing ring 10 on one side and are welded with the support ring plate 13 on the other side.

[0010] Further,

[0011] The sealing structure further comprises: a pipe insulation layer 15 and an insulation layer protection plate 14 arranged outside the pipe 16, wherein the sliding pressure plate 12 and the support ring plate 13 cover an area without insulation, forming an air cavity.

[0012] Further,

[0013] The embedded steel plate 2 is as wide as the wall 1, and the embedded steel plate 2 is a ring plate structure, and the inner diameter of the embedded steel plate 2 is the outer diameter of the pipe 16 + the thickness of the pipe insulation layer 15 + the lateral displacement of the pipe 16 + 200 mm.

[0014] Further,

[0015] The positioning angle iron 3 is a ring structure, symmetrically arranged along the center of the wall 1, and the distance between the two positioning angle irons 3 is the same as the width of the wall.

[0016] Further,

[0017] The cover plate 6 is fixed with the positioning angle iron 3 through the nut 5 and the bolt 4, forming a removable frame through the wall, and the cover plate 6 is a ring plate structure.

[0018] The bolt 4 is installed from the inside to the outside of the positioning angle iron 3, and the inside is welded and fixed with the positioning angle iron 3, and the nut 5 is arranged on the outside of the cover plate 6, facilitating one-sided disassembly for replacing the sealing ring.

[0019] Further,

[0020] Two support ring plates 13 are arranged on the outer wall of the pipe 16, the distance between the two support ring plates 13 is the center distance between the two sealing rings 10, two sliding pressure plates 12 are welded on the outside of the support ring plate 13, and the width of the sliding pressure plate 12 is not less than the length of the sealing ring 10 after pre-compression + the axial displacement of the pipe.

[0021] The outer diameter of the sliding pressure plate 12 is the outer diameter of the pipe 16 + the thickness of the pipe insulation layer 15 + the thickness of the insulation layer protection plate 14, so that the outer diameter of the sliding pressure plate 12 is consistent with the outer diameter of the insulation layer protection plate 14, facilitating the free sliding of the pipe in the axial direction.

[0022] Further,

[0023] The sealing element pressure plate 8 is welded and fixed with the outside of the cover plate 6 after positioning according to the positions of the sliding pressure plate 12 and the support ring plate 13, and the sealing element pressure plate 8 is an L-shaped ring structure.

[0024] The inner diameter of the L-shaped ring structure of the sealing element pressure plate 8 is greater than the outer diameter of the pipe 16 + the thickness of the pipe insulation layer 15 + the thickness of the insulation layer protection plate 14 + the lateral displacement of the pipe + the radial deformation of the pipe.

[0025] Further,

[0026] The sealing ring 10 is made of high-temperature-resistant silicone rubber material, and is internally filled with heat preservation cotton as a sealing ring filler 9 for basic shaping.

[0027] The sealing ring 10 is determined in outer diameter size according to the radial deformation and lateral displacement of the pipeline 16, is installed into the groove of the sealing plate 8 through pre-compression, is in full contact with the sliding plate 12, the pre-compression amount is greater than the lateral displacement amount of the pipeline + the radial deformation amount of the pipeline, so that the sealing ring 10 and the sliding plate 12 are not separated during lateral displacement, and then the sealing plate 11 is welded and fixed with the sealing plate 8 from the outside, so that a complete sealing groove is formed. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A main view of the large-diameter pipeline wall-penetrating sealing structure is provided.

[0029] Figure 2 A partial enlarged view of the large-diameter pipeline wall-penetrating sealing structure is provided. DETAILED DESCRIPTION

[0030] The technical scheme of the utility model is described in detail below with reference to the drawings.

[0031] The large-diameter pipeline wall-penetrating sealing structure provided by the utility model is used for large-diameter pipeline, large temperature gradient working conditions and large lateral displacement pipeline wall-penetrating sealing structures, such as Figure 1 and Figure 2 as shown in the drawings.

[0032] The structure comprises a positioning angle iron 3, which is welded with a pre-buried steel plate 2 to position the wall-penetrating structure, and the two positioning angle irons 3 are usually the same width as the wall body. The pre-buried steel plate 2 and the positioning angle iron 3 are annular in design, and the diameter size of the pre-buried steel plate 2 is determined according to the pipeline 16, the pipeline heat preservation layer 15, the heat preservation layer protection plate 14, the pipeline lateral displacement and the radial deformation of the pipeline caused by temperature.

[0033] The cover plate 6 is fixed with the positioning angle iron 3 through the nut 5 and the bolt 4 to form a wall-penetrating detachable frame, and there are two pieces. The frame is filled with waterproof heat preservation filler 7, the cover plate 6 is annular, the outer diameter size is slightly smaller than the outer diameter size of the positioning angle iron 3, and the inner diameter size is determined according to the pipeline 16, the pipeline heat preservation layer 15, the heat preservation layer protection plate 14, the pipeline lateral displacement and the radial deformation of the pipeline caused by temperature.

[0034] The sealing plate 8 is L-shaped annular structure, the center position is welded and fixed with the cover plate 6, and there are two pieces. The blocking edge is towards the detachable frame through the wall, and the width is determined according to the installation and deformation size of the sealing ring 10. The inner diameter of the blocking edge of the sealing plate 8 is determined according to the radial deformation and lateral displacement of the pipeline 16 and the radial deformation of the pipeline caused by temperature.

[0035] The sealing ring 10 is made of high-temperature-resistant silicone rubber material, and the inside is filled with thermal insulation loose cotton as the sealing ring filler 9 for basic shaping. The whole is annular structure, and there are two pieces. The outer diameter size of the sealing ring 10 is determined according to the radial deformation and lateral displacement of the pipeline 16 caused by temperature, and is installed in the groove of the sealing plate 8 through pre-compression. Then the sealing plate 11 is welded and fixed with the sealing plate 8 from the outside to form a complete sealing groove. The sealing plate 11 is a ring plate, and the inner diameter is consistent with the inner diameter of the blocking edge of the sealing plate 8, and there are two pieces.

[0036] The outer wall of the pipeline 16 is provided with two support ring plates 13, and the distance between the two support ring plates 13 is the center distance between the two sealing rings 10. The outer side of the support ring plate 13 is welded with two sliding plates 12, and the sliding plate 12 is closely combined with the sealing ring 10 to meet the sealing and sliding requirements. The outer diameter of the sliding plate 12 is determined according to the pipeline 16, the pipeline insulation layer 15 and the insulation layer protection plate 14, so that the outer diameter of the sliding plate 12 is consistent with the outer diameter of the insulation layer protection plate 14, and the axial free sliding of the pipeline is facilitated. The pipeline 16 is externally provided with the pipeline insulation layer 15 and the insulation layer protection plate 14, and the covered area of the sliding plate 12 and the support ring plate 13 is not provided with insulation to form an air cavity, thereby reducing the heat transfer from the pipeline 16 to the sliding plate 12 and reducing the sliding surface temperature of the sliding plate 12.

[0037] Specifically,

[0038] The wall 1 is provided with a pre-embedded steel plate 2, and the pre-embedded steel plate 2 is the same width as the wall 1. The pre-embedded steel plate is a ring plate structure, and the inner diameter of the pre-embedded steel plate 2 is the outer diameter of the pipeline 16 (mm) + the thickness of the pipeline insulation layer 15 (mm) + the lateral displacement of the pipeline 16 (mm) + 200 mm.

[0039] The positioning angle iron 3 is welded with the pre-embedded steel plate 2 to position the structure through the wall. The positioning angle iron 3 is annular structure, and there are two pieces, which are symmetrically arranged along the center surface of the wall 1. Usually, the distance between the two positioning angle irons 3 is the same as the width of the wall, and if the total width of the two sealing rings 10 is greater than the width of the wall 1 due to excessive lateral displacement of the pipeline, the distance between the positioning angle irons 3 needs to be adjusted.

[0040] The cover plate 6 is fixed with the positioning angle iron 3 through the nut 5 and the bolt 4 to form a detachable frame through the wall, and there are two pieces, which are ring plate structures. The bolt is installed by penetrating out of the positioning angle iron 3 from inside to outside, and the inside is welded and fixed with the positioning angle iron 3. The outer side of the cover plate 6 is provided with a nut for facilitating one-side disassembly for replacement of the sealing ring.

[0041] The outer wall of the pipeline 16 is provided with two support ring plates 13, and the distance between the support ring plates 13 is the center distance between the two sealing rings 10. Two sliding pressure plates 12 are welded outside the support ring plates 13, and the width of the sliding pressure plates 12 is not less than the length of the sealing ring 10 after pre-compression + the axial displacement of the pipeline. The outer diameter of the sliding pressure plate 12 is the outer diameter of the pipeline 16 (mm) + the thickness of the pipeline heat preservation layer 15 (mm) + the thickness of the heat preservation layer protection plate 14 (mm), which ensures that the outer diameter of the sliding pressure plate 12 is consistent with the outer diameter of the heat preservation layer protection plate 14, facilitating the axial free sliding of the pipeline, and at the same time effectively avoiding the direct contact between the heat preservation layer protection plate 14 and the sealing ring, and the leakage problem caused by the deformation of the heat preservation material and the protection layer.

[0042] The pipeline 16 is provided with a pipeline heat preservation layer 15 and a heat preservation layer protection plate 14 outside, wherein the sliding pressure plate 12 and the support ring plate 13 cover an area without heat preservation, forming an air cavity, reducing the heat transfer from the pipeline 16 to the sliding pressure plate 12, and reducing the temperature of the sliding surface of the sliding pressure plate 12.

[0043] After the pipeline 16 is provided with the pipeline heat preservation layer 15, the heat preservation layer protection plate 14, the support ring plate 13 and the sliding pressure plate 12, it is inserted into the wall body 1 and positioned with the center of the hole of the wall body 1.

[0044] After the sealing element pressure plate 8 is positioned according to the positions of the sliding pressure plate 12 and the support ring plate 13, it is welded and fixed with the outer side of the cover plate 6. The sealing element pressure plate 8 is an L-shaped annular structure, and there are two pieces. The L-shaped flange faces the inside of the through-wall detachable frame, and the width is greater than the size of the sealing ring 10 after installation and deformation, so as to ensure that the sealing ring 10 deforms in the groove of the sealing element pressure plate 8. The inner diameter of the L-shaped flange of the sealing element pressure plate 8 is greater than the outer diameter of the pipeline 16 (mm) + the thickness of the pipeline heat preservation layer 15 (mm) + the thickness of the heat preservation layer protection plate 14 (mm) + the lateral displacement of the pipeline (mm) + the radial deformation of the pipeline (mm). After one side of the sealing element pressure plate 8 is installed and filled with waterproof heat preservation filler 7 in the whole through-wall detachable frame, the other side is installed.

[0045] The sealing ring 10 is made of high-temperature-resistant silicone rubber material, and the inside is filled with heat preservation loose cotton as the sealing ring filler 9 for basic shaping. The sealing ring 10 is an annular structure as a whole, and there are two pieces. The outer diameter of the sealing ring 10 is determined according to the radial deformation and lateral displacement of the pipeline 16, and is installed in the groove of the sealing element pressure plate 8 by pre-compression, and fully contacts with the sliding pressure plate 12. The pre-compression amount is greater than the lateral displacement amount of the pipeline + the radial deformation amount of the pipeline, so as to ensure that the sealing ring 10 and the sliding pressure plate 12 will not be separated during lateral displacement. Then the sealing element cover plate 11 is welded and fixed with the sealing element pressure plate 8 from the outside, forming a complete sealing groove. The sealing element cover plate 11 is a ring plate, and the inner diameter is consistent with the inner diameter of the flange of the sealing element pressure plate 8, and there are two pieces.

[0046] When the pipeline slides axially, the sealing ring 10 is fixed in position under the action of the sealing cover plate 11 and the sealing press plate 8, the pipeline 16 slides through the contact surface between the sliding press plate 12 and the sealing ring 10, and the sealing property is further ensured because the sealing ring 10 is installed in a pre-compressed manner.

[0047] When the pipeline deforms radially, the sealing ring 10 is deformed in the groove of the sealing press plate 8 by the sliding press plate 12 pressing the sealing ring 10, and the sealing property is ensured.

[0048] When the pipeline displaces laterally, the pre-compressed amount of one side of the sealing ring 10 is released, and the other side of the sealing ring 10 is pressed to keep the sliding press plate 12 and the sealing ring 10 in close contact, and the sealing property is ensured.

[0049] The utility model discloses a large-diameter pipeline wall-penetrating sealing structure, which is designed in view of the deficiencies of the traditional wall-penetrating sealing structure. The pipeline can slide laterally in a large temperature gradient and a large lateral displacement environment, and the pipeline can slide laterally under the premise of ensuring sealing. The pipeline can avoid stress concentration at the contact position with the wall hole, thereby avoiding wall damage or pipeline deformation. The utility model is convenient for large temperature gradient pipeline engineering design, reduces engineering noise, and improves pipeline engineering reliability.

Claims

1. A large bore pipe through-wall seal structure, characterized by, The sealing structure comprises: Two pieces of positioning angle iron (3) are welded with the embedded steel plate (2) on the wall (1) to position the through-wall structure; Two pieces of cover plate (6) are fixed with the positioning angle iron (3) through the nut (5) and bolt (4) to form an integrated through-wall detachable frame, and the integrated through-wall detachable frame is filled with waterproof and heat-insulating filler (7); Two pieces of sealing piece pressing plate (8) are formed with a sealing groove with the sealing piece pressing plate (11) to press and position the pre-compressed sealing ring (10) with the sealing ring filler (9); Two pieces of sliding pressing plate (12) are tightly attached to one side of the pre-compressed sealing ring (10) and welded with the support ring plate (13) on the other side.

2. The large-diameter pipeline through-wall sealing structure according to claim 1, wherein the sealing structure further comprises a pipeline heat-insulating layer (15) and a heat-insulating layer protection plate (14) arranged outside the pipeline (16), and the sliding pressing plate (12) and the support ring plate (13) are not provided with heat insulation in the covered area to form an air cavity.

3. The large-diameter pipeline through-wall sealing structure according to claim 2, wherein the embedded steel plate (2) is equal in width to the wall (1), the embedded steel plate (2) is in the form of a ring plate, and the inner diameter of the embedded steel plate (2) is equal to the outer diameter of the pipeline (16) plus the thickness of the pipeline heat-insulating layer (15) plus the lateral displacement of the pipeline (16) plus 200 mm.

4. The large-diameter pipeline through-wall sealing structure according to claim 2, wherein the positioning angle iron (3) is in the form of a ring, is symmetrically arranged along the central plane of the wall (1), and the distance between the two pieces of positioning angle iron (3) is equal to the width of the wall.

5. The large-diameter pipeline through-wall sealing structure according to claim 2, wherein the cover plate (6) is fixed with the positioning angle iron (3) through the nut (5) and bolt (4) to form a through-wall detachable frame, and the cover plate (6) is in the form of a ring plate and has two pieces.

6. The large-diameter pipeline through-wall sealing structure according to claim 2, wherein the bolt (4) is installed by penetrating the positioning angle iron (3) from the inside to the outside, is fixed with the positioning angle iron (3) on the inside, and is provided with the nut (5) on the outside of the cover plate (6) to facilitate one-side disassembly and sealing ring replacement.

7. The large-diameter pipeline through-wall sealing structure according to claim 2, wherein the pipeline (16) is provided with two pieces of support ring plate (13) on the outer wall, the distance between the two pieces of support ring plate (13) is equal to the distance between the centers of the two sealing rings (10), the two pieces of sliding pressing plate (12) are welded on the outside of the support ring plate (13), and the width of the sliding pressing plate (12) is not less than the length of the pre-compressed sealing ring (10) plus the axial displacement of the pipeline.

7. The large-diameter pipeline through-wall sealing structure according to claim 2, wherein the sealing piece pressing plate (8) is welded and fixed with the cover plate (6) after being positioned according to the positions of the sliding pressing plate (12) and the support ring plate (13), and the sealing piece pressing plate (8) is in the form of an L-shaped ring. ​ ​ ​ ​ ​ ​ ​ The inner diameter of the L-shaped annular structure of the sealing plate (8) is greater than the outer diameter of the pipeline (16) + the thickness of the pipeline insulation layer (15) + the thickness of the insulation protection plate (14) + the lateral displacement of the pipeline + the radial deformation of the pipeline.

8. The large-diameter pipeline wall-penetrating sealing structure according to claim 2, characterized in that, The sealing ring (10) is made of high-temperature-resistant silicone rubber material, and the inside is filled with thermal insulation loose cotton as the sealing ring filler (9) for basic shaping, and the sealing ring (10) is annular in structure as a whole. The outer diameter of the sealing ring (10) is determined according to the radial deformation and lateral displacement of the pipeline (16), and is installed in the groove of the sealing plate (8) by pre-compression, and is in full contact with the sliding plate (12). The pre-compression amount is greater than the lateral displacement amount of the pipeline + the radial deformation amount of the pipeline, which ensures that the sealing ring (10) will not be separated from the sliding plate (12) during lateral displacement. Then the sealing plate (11) is welded and fixed with the sealing plate (8) from the outside, forming a complete sealing groove.

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