Pipeline through-wall sealing and heat preservation structure

Abstract

The utility model relates to the technical field of pipeline layout, and discloses a pipeline through-wall sealing and heat preservation structure which comprises a wall body, a pipeline through-wall section, a sleeve, a flexible heat preservation layer, a sealing baffle, a pressing and attaching piece, a supporting assembly and a connecting assembly. The wall body is provided with a wall passing hole communicated with the two sides of the wall body. The sleeve is arranged outside the pipeline wall penetrating section in a sleeving mode, and the inner diameter of the sleeve is larger than the outer diameter of the pipeline wall penetrating section. The flexible heat preservation layer is clamped between the sleeve and the pipeline wall penetrating section. A clamping hole is formed in the sealing baffle, the sleeve penetrates through the clamping hole, and the sealing baffle covers the wall passing hole. The two ends of the pressing and attaching piece are fixedly arranged on the wall, and the sealing baffle is clamped between the pressing and attaching piece and the wall. The number of the supporting assemblies is two, and the two supporting assemblies are fixedly arranged on the wall body and oppositely arranged on the two sides of the wall passing hole. And connecting assemblies are arranged between the supporting assemblies and the sealing baffles, and each connecting assembly comprises a first connecting rod, a first sleeve and a first spring.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline layout, in particular to a pipeline wall-penetrating sealing and heat-insulating structure. Background Art

[0002] At present, the expansion joint is a structure that uses the elastic deformation ability of the shape to compensate for the expansion and contraction of the pipeline (or other structural equipment) under force. It uses its elastic deformation ability to insulate and seal the pipeline (or other structural equipment) with insulation and airtightness requirements. Power station boilers often use non-metallic expansion joints to insulate and seal the wall penetration position of the boiler pipeline. The common non-metallic expansion joint insulation structure has a clamp (or flange tightened) on the top and bottom, and a skin with a certain amount of expansion reserved in the middle. The insulation cotton inside the clamp and the skin is wrapped on the pipeline. However, as the insulation and sealing structure of the boiler pipeline, the insulation cotton in the clamps at both ends of the expansion joint is easily damaged by the thermal expansion and contraction deformation of the pipeline, especially the vertically arranged expansion joint. After the internal insulation cotton is squeezed and damaged, the insulation cotton piles down due to gravity, causing the upper space to lose its insulation effect, and also affecting the airtightness.

[0003] Therefore, there is an urgent need for a pipeline wall-penetrating sealing and thermal insulation structure to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a pipeline wall-penetrating sealing and heat-insulating structure, which can avoid the flexible heat-insulating layer from being squeezed and damaged, and can still ensure the sealing effect of the wall hole when the pipeline wall-penetrating section is displaced.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a pipeline wall-penetrating sealing and heat-insulating structure, comprising:

[0006] A wall body, on which a through-wall hole connecting two sides of the wall body is provided;

[0007] A pipe wall-penetrating section, which passes through the wall hole and has two ends exposed on both sides of the wall;

[0008] A sleeve, which is sleeved outside the pipe wall-penetrating section, and the inner diameter of the sleeve is larger than the outer diameter of the pipe wall-penetrating section;

[0009] A flexible thermal insulation layer, which is sandwiched between the sleeve and the pipe wall-penetrating section;

[0010] A sealing baffle plate is provided with a clamping hole, the diameter of the clamping hole is equal to the outer diameter of the sleeve, the sleeve passes through the clamping hole, and the sealing baffle plate covers the wall hole;

[0011] A pressing member, both ends of which are fixedly arranged on the wall, the sealing baffle is sandwiched between the pressing member and the wall, and the sealing baffle can slide on the surface of the wall;

[0012] Two support assemblies, both of which are fixedly arranged on the wall and are arranged on both sides of the wall hole opposite to each other, and the support assemblies are spaced apart from the edges of the wall hole;

[0013] A connecting component is provided between the supporting component and the sealing baffle, the connecting component connects the supporting component and the sealing baffle, the connecting component comprises a first connecting rod, a first sleeve and a first spring, the first end of the first connecting rod is connected to one of the supporting component and the sealing baffle, the second end is inserted into the first end of the first sleeve, the second end of the first sleeve is connected to the other of the supporting component and the sealing baffle, the first spring is sleeved on the first connecting rod, the first end abuts against the first sleeve, the second end abuts against the supporting component or the sealing baffle, and the axes of each of the first sleeves are parallel to each other.

[0014] As an improvement of the above technical solution, it also includes an elastic sealing gasket, which is sandwiched between the sealing baffle and the wall, and is fixed on the sealing baffle, and surrounds the wall hole.

[0015] As an improvement of the above technical solution, the first end of the first sleeve is connected to the sealing baffle, and the second end is sleeved on the second end of the first connecting rod. The first end of the first connecting rod is connected to the supporting assembly, and the second end of the first spring abuts against the connecting assembly.

[0016] As an improvement of the above technical solution, the support assembly includes:

[0017] A first fixing plate, which is fixedly arranged on the wall, a receiving groove is arranged on a side of the first fixing plate away from the wall hole, the receiving groove extends along a first direction, and the first sleeve extends along a second direction perpendicular to the first direction;

[0018] a second sleeve, which is disposed in the accommodating groove and extends along the first direction, and an end of the first connecting rod away from the first sleeve is fixedly connected to a side wall of the second sleeve;

[0019] Two second connecting rods, both of which are disposed in the receiving groove and extend along the first direction, and are respectively disposed at two ends of the second sleeve, and both of which have one end fixedly connected to the first fixing plate and the other end inserted into the second sleeve;

[0020] The second spring is sleeved on the second connecting rod, and one end of the second spring abuts against the groove wall of the accommodating groove, and the other end of the second spring abuts against the second sleeve.

[0021] As an improvement of the above technical solution, a strip avoidance hole extending along the first direction is provided at the bottom of the accommodating groove, and the strip avoidance hole connects the accommodating groove and the side of the first fixing plate close to the wall hole, and the first connecting rod passes through the strip avoidance hole.

[0022] As an improvement of the above technical solution, the pressing member includes:

[0023] A pressing plate, which is arranged on a side of the sealing baffle away from the wall;

[0024] A connecting plate is provided at both ends of the pressing plate, one end of the connecting plate is fixedly connected to the pressing plate, and the other end is fixedly connected to the wall.

[0025] As an improvement of the above technical solution, the sealing baffle comprises:

[0026] A first baffle, which is arranged at one side of the sleeve, the first sleeve located at one side of the sleeve is fixedly connected to the first baffle, and a first slot is arranged at one end of the first baffle close to the sleeve;

[0027] The second baffle is arranged on the other side of the sleeve, the first sleeve located on the other side of the sleeve is fixedly connected to the second baffle, and the second baffle is provided with a second slot at one end close to the sleeve, and the first slot and the second slot are spliced ​​to form the connecting hole.

[0028] As an improvement of the above technical solution, both the first card slot and the second card slot are semicircular card slots.

[0029] As an improvement of the above technical solution, the flexible thermal insulation layer is thermal insulation cotton.

[0030] As an improvement of the above technical solution, a plurality of the connecting components are arranged between the two supporting components and the sealing baffle.

[0031] Compared with the prior art, the utility model has the following beneficial effects:

[0032] In the utility model, the pipeline wall-penetrating sealing and heat-insulating structure has a flexible heat-insulating layer covering the pipeline wall-penetrating section, which plays a role in heat-insulating the pipeline, reduces the heat conduction between the pipeline wall-penetrating section and the sealing baffle, and the sealing baffle plays a role in sealing the through-wall hole, preventing the high-temperature smoke inside the wall from leaking to the outside of the wall through the wall hole. When the pipeline wall-penetrating section undergoes thermal expansion and contraction, the deformation of the flexible heat-insulating layer compensates for the change in the diameter of the pipeline wall-penetrating section, and the flexible heat-insulating layer is entirely covered with the casing, so that the flexible heat-insulating layer is subjected to more uniform force and is not easily squeezed and damaged by the thermal expansion and contraction of the pipeline wall-penetrating section. In addition, through the cooperation of the first connecting rod, the first sleeve and the first spring, the pipe penetrating wall section can move along the axial direction of the first sleeve, thereby compensating for the displacement of the pipe penetrating wall section along the axial direction of the first sleeve, so that when other parts of the pipe expand and contract due to thermal expansion and contraction, causing the position of the pipe penetrating wall section to change along the axial direction of the first sleeve, the sealing baffle can move with the pipe penetrating wall section, and the sealing baffle can still be tightly attached to the wall under the limiting action of the pressing part to ensure the sealing effect of the wall hole, and when the pipe penetrating wall section is reset, the sealing baffle can also be reset under the action of the first spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the pipeline wall sealing and insulation structure provided by the embodiment of the utility model Figure 1 ;

[0034] Figure 2 This is a schematic diagram of the pipeline wall sealing and insulation structure provided by the embodiment of the utility model Figure 2 ;

[0035] Figure 3 This is a schematic diagram of a partial structure of the pipeline wall sealing and insulation structure provided by the embodiment of the utility model Figure 1 ;

[0036] Figure 4 This is a schematic diagram of a partial structure of the pipeline wall sealing and insulation structure provided by the embodiment of the utility model Figure 2 .

[0037] In the figure:

[0038] 1. Wall; 11. Wall hole;

[0039] 2. Pipeline wall section;

[0040] 3. Casing;

[0041] 4. Flexible insulation layer;

[0042] 5. Sealing baffle; 51. First baffle; 52. Second baffle;

[0043] 6. Pressing piece; 61. Pressing plate; 62. Connecting plate;

[0044] 7. Support assembly; 71. First fixing plate; 711. Accommodating groove; 712. Avoidance hole; 72. Second sleeve; 73. Second connecting rod; 74. Cover plate;

[0045] 8. Connecting assembly; 81. First connecting rod; 82. First sleeve;

[0046] 9. Second fixing plate. DETAILED DESCRIPTION

[0047] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0048] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0050] In the description of this embodiment, the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0051] like Figure 1-Figure 4As shown, this embodiment provides a pipeline wall-penetrating sealing and heat-insulating structure, for example, for sealing and heat-insulating pipelines on the boiler wall of a power plant. The pipeline wall-penetrating sealing and heat-insulating structure comprises a wall 1, a pipeline wall-penetrating section 2, a sleeve 3, a flexible heat-insulating layer 4, a sealing baffle 5, a pressing member 6, a supporting assembly 7 and a connecting assembly 8. The wall 1 is provided with a through-wall hole 11 connecting the two sides of the wall 1. The pipeline wall-penetrating section 2 passes through the through-wall hole 11, and both ends are exposed on both sides of the wall 1. The sleeve 3 is sleeved outside the pipeline wall-penetrating section 2, and the inner diameter of the sleeve 3 is greater than the outer diameter of the pipeline wall-penetrating section 2. The flexible heat-insulating layer 4 is sandwiched between the sleeve 3 and the pipeline wall-penetrating section 2, and covers the part of the pipeline wall-penetrating section 2 located in the sleeve 3. In this embodiment, the flexible heat-insulating layer 4 is heat-insulating cotton. The sealing baffle 5 is provided with a clamping hole, the aperture of which is equal to the outer diameter of the sleeve 3, the sleeve 3 passes through the clamping hole, and the sealing baffle 5 covers the through-wall hole 11. Both ends of the pressing member 6 are fixedly arranged on the wall 1, and the sealing baffle 5 is sandwiched between the pressing member 6 and the wall 1, and the sealing baffle 5 can slide on the surface of the wall 1. Two supporting components 7 are provided, and the two supporting components 7 are fixedly arranged on the wall 1 and are relatively arranged on both sides of the wall hole 11, and the supporting components 7 and the edges of the wall hole 11 are spaced apart. A connecting assembly 8 is provided between the supporting assembly 7 and the sealing baffle 5. The connecting assembly 8 connects the corresponding supporting assembly 7 and the sealing baffle 5. The connecting assembly 8 includes a first connecting rod 81, a first sleeve 82 and a first spring. The first end of the first connecting rod 81 is connected to one of the supporting assembly 7 and the sealing baffle 5, and the second end is inserted into the first end of the first sleeve 82. The second end of the first sleeve 82 is connected to the other of the supporting assembly 7 and the sealing baffle 5. The first spring is sleeved on the first connecting rod 81, and the first end abuts against the first sleeve 82, and the second end abuts against the supporting assembly 7 or the sealing baffle 5. The axes of each first sleeve 82 are parallel to each other, and the axis of the first sleeve 82 is perpendicular to the axis of the pipeline through the wall section 2. In this embodiment, the sealing baffle 5, the pressing member 6, the supporting assembly 7 and the connecting assembly 8 are arranged on the outer side of the wall 1, that is, the side of the wall 1 away from the boiler.

[0052] In the pipeline wall-penetrating sealing and heat-insulating structure provided in this embodiment, the flexible heat-insulating layer 4 covering the pipeline wall-penetrating section 2 plays a role in heat-insulating the pipeline, reducing the heat conduction between the pipeline wall-penetrating section 2 and the sealing baffle 5, and the sealing baffle 5 plays a role in sealing the through-wall hole 11, preventing the high-temperature flue gas inside the wall 1 from leaking to the outside of the wall 1 through the wall hole 11. In addition, when the pipeline wall-penetrating section 2 undergoes thermal expansion and contraction, the deformation of the flexible heat-insulating layer 4 compensates for the change in the diameter of the pipeline wall-penetrating section 2, and the sleeve 3 covers the flexible heat-insulating layer 4 as a whole, so that the flexible heat-insulating layer 4 is subjected to more uniform force and is not easily squeezed and damaged by the thermal expansion and contraction of the pipeline wall-penetrating section 2. In addition, through the cooperation of the first connecting rod 81, the first sleeve 82 and the first spring, the pipe wall section 2 can move along the axis direction of the first sleeve 82, so as to compensate for the displacement of the pipe wall section 2 along the axis direction of the first sleeve 82, so that when the other parts of the pipe expand and contract due to heat, causing the position of the pipe wall section 2 to change along the axis direction of the first sleeve 82, the sealing baffle 5 can move with the pipe wall section 2, and the sealing baffle 5 can still be close to the wall 1 under the limiting action of the pressing member 6 to ensure the sealing effect of the wall hole 11, and when the pipe wall section 2 is reset, the sealing baffle 5 can also be reset under the action of the first spring. It can be understood by those skilled in the art that when the pipe wall sealing and insulation structure is installed, the axis of the first sleeve 82 should be parallel to the direction in which the pipe wall section 2 is most likely to be displaced.

[0053] In this embodiment, the first end of the first sleeve 82 is connected to the sealing baffle 5, and the second end is sleeved on the second end of the first connecting rod 81. The first end of the first connecting rod 81 is connected to the supporting assembly 7, and the second end of the first spring abuts against the connecting assembly 8.

[0054] Alternatively, if Figure 1 , Figure 3 and Figure 4 As shown, a plurality of connection components 8 are provided between the two support components 7 and the sealing baffle 5 to improve the support stability of the support components 7 on the sealing baffle 5 .

[0055] Alternatively, if Figure 1 , Figure 3 and Figure 4As shown, the support assembly 7 includes a first fixing plate 71, a second sleeve 72, a second connecting rod 73 and a second spring. The first fixing plate 71 is fixedly arranged on the wall 1. A receiving groove 711 is arranged on the side of the first fixing plate 71 away from the through-wall hole 11. The receiving groove 711 extends along the first direction. The first sleeve 82 extends along the second direction perpendicular to the first direction. That is to say, the sealing baffle 5 can move along the second direction through the cooperation of the first connecting rod 81, the first sleeve 82 and the first spring. The second sleeve 72 is arranged in the receiving groove 711 and extends along the first direction. One end of the first connecting rod 81 away from the first sleeve 82 is fixedly connected to the side wall of the second sleeve 72. Two second connecting rods 73 are arranged. Both of the two second connecting rods 73 are arranged in the receiving groove 711 and extend along the first direction. The two second connecting rods 73 are respectively arranged at both ends of the second sleeve 72. One end of each of the two second connecting rods 73 is fixedly connected to the first fixing plate 71 and the other end is inserted into the second sleeve 72. The second spring is sleeved on the second connecting rod 73, and one end of the second spring abuts against the groove wall of the accommodating groove 711, and the other end abuts against the second sleeve 72. Through the cooperation of the second sleeve 72, the second connecting rod 73 and the second spring, the first connecting rod 81 can move along the first direction perpendicular to the second direction with the second sleeve, so that when the pipeline wall section 2 moves along the first direction, the sealing baffle 5 can also move along the first direction with the pipeline wall section 2, further improving the displacement compensation capability of the sealing baffle 5 for the pipeline wall section 2.

[0056] Furthermore, if Figure 1 , Figure 3 and Figure 4 As shown, a strip-shaped avoidance hole 712 extending along the first direction is provided at the bottom of the accommodating groove 711, the strip-shaped avoidance hole 712 connects the accommodating groove 711 with a side of the first fixing plate 71 close to the through-wall hole 11, and the first connecting rod 81 passes through the strip-shaped avoidance hole 712. By providing the avoidance hole 712, the first connecting rod 81 can connect the second sleeve 72 with the first sleeve 82.

[0057] Furthermore, if Figure 1 , Figure 3 and Figure 4 As shown, the notch of the accommodating groove 711 is provided with a cover plate 74, which is used to cover the accommodating groove 711. The cover plate 74 is detachably connected to the first fixing plate 71, and the specific connection method can be selected according to needs. For example, the cover plate 74 and the first fixing plate 71 can be connected by screws.

[0058] Furthermore, if Figure 1 , Figure 3 and Figure 4As shown, the pipeline wall-penetrating sealing and insulation structure provided in this embodiment also includes two second fixing plates 9 , one end of the two first fixing plates 71 is fixedly connected by a second fixing plate 9 , and the other end of the two first fixing plates 71 is also fixedly connected by a second fixing plate 9 .

[0059] Alternatively, if Figure 1 As shown, the pressing member 6 includes a pressing plate 61 and a connecting plate 62. The pressing plate 61 is arranged on the side of the sealing baffle 5 away from the wall 1. Connecting plates 62 are arranged at both ends of the pressing plate 61, one end of the connecting plate 62 is fixedly connected to the pressing plate 61, and the other end is fixedly connected to the wall 1. In this embodiment, the pressing plate 61 is parallel to the wall surface, and the connecting plate 62 is perpendicular to the wall surface.

[0060] Alternatively, if Figure 1 As shown, the sealing baffle 5 includes a first baffle 51 and a second baffle 52. The first baffle 51 is arranged on one side of the sleeve 3, and the first sleeve 82 located on one side of the sleeve 3 is fixedly connected to the first baffle 51, and a first card groove is arranged at one end of the first baffle 51 close to the sleeve 3. The second baffle 52 is arranged on the other side of the sleeve 3, and the first sleeve 82 located on the other side of the sleeve 3 is fixedly connected to the second baffle 52, and a second card groove is arranged at one end of the second baffle 52 close to the sleeve 3, and the first card groove and the second card groove are spliced ​​to form a card hole. The sealing baffle 5 is split into the first baffle 51 and the second baffle 52 to facilitate the installation of the pipeline wall sealing and insulation structure. In this embodiment, the first card groove and the second card groove are both semicircular card grooves.

[0061] Optionally, the pipeline wall-penetrating sealing and heat-insulating structure provided in this embodiment further includes an elastic sealing pad, an elastic sealing pad is sandwiched between the sealing baffle 5 and the wall 1, the elastic sealing pad is fixedly arranged on the sealing baffle 5, and the elastic sealing pad surrounds the wall hole 11. The gap between the sealing baffle 5 and the wall 1 is sealed by the elastic sealing pad to improve the sealing effect between the sealing baffle 5 and the wall 1.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A pipeline wall-penetrating sealing and thermal insulation structure, characterized in that: include: A wall (1) having a through-wall hole (11) connected to two sides of the wall (1); A pipe wall-penetrating section (2), which passes through the wall-penetrating hole (11) and has two ends exposed on both sides of the wall (1); A sleeve (3) is sleeved outside the pipe wall-penetrating section (2), and the inner diameter of the sleeve (3) is greater than the outer diameter of the pipe wall-penetrating section (2); A flexible thermal insulation layer (4) is sandwiched between the sleeve (3) and the pipeline wall-penetrating section (2); A sealing baffle (5) is provided with a clamping hole, the diameter of the clamping hole is equal to the outer diameter of the sleeve (3), the sleeve (3) passes through the clamping hole, and the sealing baffle (5) covers the wall hole (11); A pressing member (6), both ends of which are fixedly arranged on the wall (1), the sealing baffle (5) is sandwiched between the pressing member (6) and the wall (1), and the sealing baffle (5) is capable of sliding on the surface of the wall (1); Two support assemblies (7), both of which are fixedly arranged on the wall (1) and arranged on both sides of the wall hole (11) in a relative manner, and the support assemblies (7) are spaced apart from the edges of the wall hole (11); A connecting component (8), wherein the connecting component (8) is arranged between the supporting component (7) and the sealing baffle (5), and the connecting component (8) connects the supporting component (7) and the sealing baffle (5). The connecting component (8) comprises a first connecting rod (81), a first sleeve (82) and a first spring. The first end of the first connecting rod (81) is connected to one of the supporting component (7) and the sealing baffle (5), and the second end is inserted into the first end of the first sleeve (82). The second end of the first sleeve (82) is connected to the other of the supporting component (7) and the sealing baffle (5). The first spring is sleeved on the first connecting rod (81), and the first end abuts against the first sleeve (82), and the second end abuts against the supporting component (7) or the sealing baffle (5). The axes of each of the first sleeves (82) are parallel to each other.

2. The pipeline wall sealing and thermal insulation structure according to claim 1 is characterized in that: It also comprises an elastic sealing pad, which is sandwiched between the sealing baffle (5) and the wall (1), and is fixedly arranged on the sealing baffle (5), and surrounds the wall hole (11).

3. The pipeline wall sealing and thermal insulation structure according to claim 2 is characterized in that: The first end of the first sleeve (82) is connected to the sealing baffle (5), and the second end is sleeved on the second end of the first connecting rod (81). The first end of the first connecting rod (81) is connected to the supporting assembly (7), and the second end of the first spring abuts against the connecting assembly (8).

4. The pipeline wall-penetrating sealing and heat-insulating structure according to claim 3 is characterized in that: The support assembly (7) comprises: A first fixing plate (71) fixedly disposed on the wall (1), a receiving groove (711) being disposed on a side of the first fixing plate (71) away from the wall hole (11), the receiving groove (711) extending along a first direction, and the first sleeve (82) extending along a second direction perpendicular to the first direction; a second sleeve (72) disposed in the accommodating groove (711) and extending along the first direction, wherein one end of the first connecting rod (81) away from the first sleeve (82) is fixedly connected to a side wall of the second sleeve (72); Two second connecting rods (73), the two second connecting rods (73) are both arranged in the accommodating groove (711) and extend along the first direction, the two second connecting rods (73) are respectively arranged at two ends of the second sleeve (72), one end of the two second connecting rods (73) is fixedly connected to the first fixing plate (71), and the other end is inserted into the second sleeve (72); The second spring is sleeved on the second connecting rod (73), and one end of the second spring abuts against the groove wall of the accommodating groove (711), and the other end of the second spring abuts against the second sleeve (72).

5. The pipeline wall-penetrating sealing and heat-insulating structure according to claim 4 is characterized in that: The bottom of the accommodating groove (711) is provided with a strip-shaped avoidance hole (712) extending along the first direction, the strip-shaped avoidance hole (712) connects the accommodating groove (711) with a side of the first fixing plate (71) close to the wall hole (11), and the first connecting rod (81) passes through the strip-shaped avoidance hole (712).

6. The pipeline wall-penetrating sealing and heat-insulating structure according to claim 5 is characterized in that: The pressing member (6) comprises: A pressing plate (61) arranged on a side of the sealing baffle (5) away from the wall (1); A connecting plate (62) is provided at both ends of the pressing plate (61), one end of the connecting plate (62) is fixedly connected to the pressing plate (61), and the other end of the connecting plate (62) is fixedly connected to the wall (1).

7. The pipeline wall-penetrating sealing and heat-insulating structure according to any one of claims 1 to 6, characterized in that: The sealing baffle (5) comprises: a first baffle (51) disposed on one side of the sleeve (3); the first sleeve (82) located on one side of the sleeve (3) is fixedly connected to the first baffle (51); and a first clamping groove is disposed at one end of the first baffle (51) close to the sleeve (3); A second baffle (52) is arranged on the other side of the sleeve (3); the first sleeve (82) located on the other side of the sleeve (3) is fixedly connected to the second baffle (52); a second clamping groove is arranged at one end of the second baffle (52) close to the sleeve (3); the first clamping groove and the second clamping groove are spliced ​​to form the clamping hole.

8. The pipeline wall-penetrating sealing and heat-insulating structure according to claim 7 is characterized in that: The first card slot and the second card slot are both semicircular card slots.

9. The pipeline wall-penetrating sealing and heat-insulating structure according to any one of claims 1 to 6, characterized in that: The flexible thermal insulation layer (4) is thermal insulation cotton.

10. The pipeline wall-penetrating sealing and heat-insulating structure according to any one of claims 1 to 6, characterized in that: A plurality of connection components (8) are provided between the two support components (7) and the sealing baffle (5).

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