CN216112553U - Waste heat boiler wall-penetrating pipeline sealing structure - Google Patents
Waste heat boiler wall-penetrating pipeline sealing structure Download PDFInfo
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- CN216112553U CN216112553U CN202121949613.1U CN202121949613U CN216112553U CN 216112553 U CN216112553 U CN 216112553U CN 202121949613 U CN202121949613 U CN 202121949613U CN 216112553 U CN216112553 U CN 216112553U
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Abstract
The utility model provides a waste heat boiler wall-penetrating pipeline sealing structure, which relates to the technical field of boiler sealing and comprises a wall-penetrating pipeline and a boiler side wall, wherein the boiler side wall comprises an inner protection plate, an outer protection plate and a heat preservation layer, the heat preservation layer is positioned between the inner protection plate and the outer protection plate, a wall-penetrating hole for the wall-penetrating pipeline to penetrate through is formed in the boiler side wall, a non-metal expansion joint penetrating through the wall-penetrating pipeline is arranged on the outer protection plate side, a heat preservation structure is arranged on the inner protection plate side, and a heat preservation structure limiting device is arranged on the heat preservation structure side; the heat insulation structure limiting device is designed into a pipe clamp or an L-shaped fixing plate, so that the heat insulation structure can be fixed or limited, the heat insulation sealing effect is good, the safety is high, the structure is simple, and the waste heat boiler wall penetrating pipeline sealing structure is obtained, so that the phenomenon of overtemperature caused by the fact that smoke gas enters into the peripheral gap part of the wall penetrating pipeline and the nonmetal expansion joint is avoided.
Description
Technical Field
The utility model belongs to the technical field of boiler sealing, and particularly relates to a wall-penetrating pipeline sealing structure of a waste heat boiler.
Background
A waste heat boiler (HRSG) is an important component in gas-steam combined cycle, the combined cycle unit is usually used as a peak regulation unit and needs to be frequently started and stopped, the exhaust gas temperature of a gas turbine is high, the speed is high, high requirements are provided for the sealing and heat preservation of the waste heat boiler, particularly for a side wall penetrating pipeline part of the waste heat boiler, the expansion amount of a boiler side wall penetrating pipe is large, the design difficulty of the wall penetrating and heat preservation sealing of the part is large due to the frequent starting and stopping of the unit, the phenomenon that the side wall penetrating expansion joint of the waste heat boiler pipeline is over-temperature occurs occasionally, the nonmetal expansion joint is burnt out or even damaged, and the safe and stable operation of the unit is influenced.
Therefore, effective measures are taken to prevent the smoke from entering the side wall, which is a problem to be solved urgently at present.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the waste heat boiler wall-penetrating pipeline sealing structure in the prior art, the utility model aims to provide the waste heat boiler wall-penetrating pipeline sealing structure which is good in heat preservation sealing effect, strong in safety and simple in structure, so as to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides a waste heat boiler wall-penetrating pipeline sealing structure which comprises a wall-penetrating pipeline and a boiler side wall, wherein the boiler side wall comprises an inner protection plate, an outer protection plate and a heat insulation layer, the heat insulation layer is positioned between the inner protection plate and the outer protection plate, a wall-penetrating hole for the wall-penetrating pipeline to penetrate through is formed in the boiler side wall, a non-metal expansion joint is arranged on the outer protection plate, a heat insulation structure is arranged on the inner protection plate, and a heat insulation structure limiting device is arranged on the heat insulation structure.
The basic reason that the expansion joint of the side wall of the waste heat boiler wall-penetrating pipeline and the peripheral wall boards thereof have overtemperature is that the sealing performance of the waste heat boiler wall-penetrating pipeline part is poor, and in order to fundamentally solve the problem, smoke needs to be prevented from entering the boiler side wall from the source.
Further, insulation construction stop device is the pipe clamp, the pipe clamp is located insulation construction keeps away from one side of inner casing, insulation construction is located the pipe clamp with between the inner casing.
The heat insulation structure is characterized in that pipe clamps are installed on the wall penetrating pipes close to the heat insulation structure in the boiler, the pipe clamps are installed on the pipes, after the boiler is started to operate, the wall penetrating pipes are subjected to thermal expansion, the pipe clamps are driven to move towards the outside of the boiler together, the pipe clamps compress the heat insulation structure, the wall penetrating pipes have small expansion amount towards the axial direction outside the boiler, the heat insulation structure is made of flexible heat insulation materials, the heat insulation structure can be compressed after the boiler is operated, the peripheral gap part of the wall penetrating pipes is better blocked, the wall penetrating pipe sealing structure has a good heat insulation sealing effect, after the boiler is stopped and cooled, the wall penetrating pipes and the pipe clamps return to the position before the boiler is started, and the compressed heat insulation structure also returns to the position before the boiler is started, so that the operation is repeated.
Further, insulation construction stop device is the fixed plate, the cross sectional shape of fixed plate is L shape, the fixed plate includes diaphragm and riser, the one end fixed connection of diaphragm is in on the inner casing, the other end of diaphragm with the riser is connected, the fixed plate is right insulation construction carries on spacingly.
Further, the number of the fixing plates is more than two.
In order to better fix the heat insulation structure, a plurality of fixing plates are arranged on an inner guard plate, the width of the fixing plates is proper to press the heat insulation structure, namely, the width of a transverse plate is larger than or equal to the thickness of the heat insulation structure, when the boiler operates, because the expansion of the inner guard plate and the fixing plates fixedly connected on the inner guard plate is negligible relative to the expansion of the wall-penetrating pipeline, no matter the wall-penetrating pipeline moves towards the inside or the outside of the boiler, the heat insulation structure can not move axially, only can move radially along the wall-penetrating pipeline, when the heat insulation structure moves radially, the fixing plates limit the wall-penetrating pipeline, and the length of the transverse plate and the vertical plate in the cross section direction is controlled to ensure that the heat insulation structure can not fall off from the fixing plates no matter the boiler is stopped or the boiler operates, thereby avoiding the smoke from entering into the gap part and the nonmetal expansion joint at the periphery of the wall-penetrating pipeline, causing the over-temperature phenomenon.
Furthermore, the heat insulation structure is made of a flexible heat insulation material.
The material of the heat insulation structure has two characteristics of flexibility and heat insulation, the flexible material is telescopic, bendable, twistable and compressible and deformable without losing performance, so that the heat insulation structure can adapt to the complex working environment of the waste heat boiler, and the flexible characteristic can be used for better blocking the gap part at the periphery of the wall-penetrating pipeline so as to achieve the purpose of sealing; the heat preservation refers to the material with heat preservation performance.
Has the advantages that:
(1) the utility model provides a waste heat boiler wall-penetrating pipeline sealing structure which comprises a wall-penetrating pipeline and a boiler side wall, wherein the boiler side wall comprises an inner guard plate, an outer guard plate and a heat-insulating layer, the heat-insulating layer is positioned between the inner guard plate and the outer guard plate, a wall-penetrating hole for the wall-penetrating pipeline to penetrate through is formed in the boiler side wall, a non-metal expansion joint penetrating through the wall-penetrating pipeline is arranged on the outer guard plate side, a heat-insulating structure is arranged on the inner guard plate side, and a heat-insulating structure limiting device is arranged on the heat-insulating structure side. Through spacing to insulation construction for the boiler is from starting to normal operating and even blowing out, and the inner casing is all hugged closely to insulation construction, thereby can effectively prevent that the high temperature flue gas scurries into in peripheral space part of wall-penetrating pipeline and the nonmetal expansion joint.
(2) According to the waste heat boiler through-wall pipeline sealing structure provided by the utility model, the heat insulation structure limiting device is designed into a pipe clamp or an L-shaped fixing plate, so that the fixing or limiting of the heat insulation structure can be realized, the waste heat boiler through-wall pipeline sealing structure with good heat insulation sealing effect, strong safety and simple structure is obtained, and the phenomenon of overtemperature caused by the fact that smoke gas enters into the gap part at the periphery of the through-wall pipeline and the nonmetal expansion joint is avoided.
The conception, the specific structure, and the technical effects produced by the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features, and the effects of the present invention.
Drawings
FIG. 1 is a schematic view of a conventional sealing structure of a wall-penetrating pipe;
FIG. 2 is a schematic structural view of embodiment 1 of the present invention;
FIG. 3 is a schematic structural view of example 2 of the present invention;
FIG. 4 is a side view showing the arrangement of the heat retaining structure and the heat retaining structure stopper in example 2;
description of the drawings: 1. a through-wall conduit; 2. an inner sheathing; 3. an outer shroud; 4. a heat-insulating layer; 5. a non-metallic expansion joint; 6. a heat preservation structure; 7. a pipe clamp; 8. and (7) fixing the plate.
Detailed Description
The utility model will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The dimensions of the elements in the figures may be exaggerated where appropriate to improve clarity.
As shown in fig. 1, which is a schematic view of a sealing structure of an existing conventional wall-penetrating pipeline, it can be seen that, in the existing sealing structure, since the heat insulation structure does not have any fixing or limiting device, the heat insulation structure is easy to separate from the inner casing plate in an operating or stopping state of the boiler, smoke is caused to flow into a gap portion and a non-metal expansion joint around the wall-penetrating pipeline, the sealing effect of the wall-penetrating pipeline is poor, and an over-temperature phenomenon is easily caused.
Example 1:
as shown in fig. 2, in a preferred embodiment, a waste heat boiler wall-penetrating pipeline sealing structure is provided, which includes a wall-penetrating pipeline 1 and a boiler side wall, where the boiler side wall includes an inner casing 2, an outer casing 3 and a heat insulating layer 4, the heat insulating layer 4 is located between the inner casing 2 and the outer casing 3, a wall-penetrating hole for the wall-penetrating pipeline 1 to pass through is formed in the boiler side wall, a non-metal expansion joint 5 penetrating through the wall-penetrating pipeline 1 is arranged on the outer casing 3 side, a heat insulating structure 6 is arranged on the inner casing 2 side, and a heat insulating structure limiting device is arranged on the heat insulating structure 6 side.
The basic reason that the expansion joint of the side wall of the waste heat boiler wall-penetrating pipeline and the peripheral wall boards thereof generate overtemperature is that the sealing performance of the waste heat boiler wall-penetrating pipeline part is poor, and in order to fundamentally solve the problem, smoke needs to be prevented from entering the boiler side wall from the source, the utility model ensures that the heat insulation structure 6 is tightly attached to the inner protection plate 2 in the operation process of the boiler by arranging the heat insulation structure limiting device at the side of the heat insulation structure 6, thereby ensuring the sealing performance of the waste heat boiler wall-penetrating pipeline part.
Insulation construction stop device is pipe clamp 7, pipe clamp 7 is located insulation construction 6 keeps away from one side of inner casing 2, insulation construction 6 is located pipe clamp 7 with between the inner casing 2.
The method is characterized in that a pipe clamp 7 is arranged on a wall penetrating pipeline 1 which is close to a heat insulation structure 6 in the boiler, the pipe clamp 7 is arranged on the wall penetrating pipeline 1, after the boiler is started to operate, the wall penetrating pipeline 1 is heated to expand to drive the pipe clamp 7 to move out of the boiler together, the pipe clamp 7 compresses the heat insulation structure 6, the wall penetrating pipeline 1 has a small expansion amount in the axial direction out of the boiler, and the heat insulation structure 6 is made of a flexible heat insulation material, so that the heat insulation structure 6 can be compressed after the boiler is operated, the peripheral gap part of the wall penetrating pipeline is better blocked, the wall penetrating pipeline sealing structure has a good heat insulation sealing effect, after the boiler is stopped and cooled, the wall penetrating pipeline 1 and the pipe clamp 7 return to the position before the boiler is started, and the compressed heat insulation structure 6 also returns to the position before the boiler is started, and the operation is repeated.
The heat insulation structure 6 is made of a flexible heat insulation material.
The material of the heat insulation structure 6 has two major characteristics of flexibility and heat insulation, the flexible material is telescopic, bendable and twistable, and can be compressed and deformed without losing performance, so that the heat insulation structure can adapt to the complex working environment of the waste heat boiler, and the flexible characteristic can be used for better blocking the gap part at the periphery of the wall-penetrating pipeline so as to achieve the purpose of sealing; the heat preservation refers to the material with heat preservation performance.
Example 2:
as shown in fig. 3 to 4, which are views of another embodiment of the present invention, a waste heat boiler through-wall pipe sealing structure is provided, which is basically the same as embodiment 1, and the main differences are as follows:
insulation construction stop device is fixed plate 8, the cross sectional shape of fixed plate 8 is L shape, fixed plate 8 includes diaphragm and riser, the one end fixed connection of diaphragm is in on the inner casing 2, the other end of diaphragm with the riser is connected, fixed plate 8 is right insulation construction 6 carries on spacingly. The transverse plates are horizontally arranged, the vertical plates are vertically arranged,
the quantity of fixed plate 8 is in 6 ~ 12, and concrete quantity sets up according to actual conditions can.
For better fixing the thermal insulation structure 6, as shown in fig. 4, 6 fixing plates 8 are installed on the inner protection plate 2, the width of the fixing plate 8 is suitable for pressing the thermal insulation structure 6, the fixing plate 8 is welded on the inner protection plate 2, after the fixing plate 8 is installed, when the boiler operates, because the expansion of the inner protection plate 2 and the fixing plate 8 fixedly connected to the inner protection plate 2 can be ignored relative to the expansion of the wall-penetrating pipeline 1, no matter the wall-penetrating pipeline 1 moves towards the inside or outside of the boiler, the thermal insulation structure 6 can not move axially, only the wall-penetrating pipeline 1 can move radially, when the thermal insulation structure 6 moves radially, the fixing plate 8 limits the thermal insulation structure, and the length of the transverse plate and the vertical plate in the cross section direction is controlled to ensure that no matter the boiler stops or operates, the thermal insulation structure 6 can not fall off from the fixing plate 8, thereby avoiding the phenomenon of overtemperature caused by the flue gas entering into the gap part at the periphery of the wall-penetrating pipeline and the nonmetallic expansion section Occurs.
Claims (5)
1. The utility model provides a waste heat boiler wears wall pipeline seal structure, includes wears wall pipeline (1) and boiler side wall, the boiler side wall includes inner casing (2), outer casing (3) and heat preservation (4), heat preservation (4) are located inner casing (2) with between outer casing (3), set up the wall hole of wearing that supplies to wear wall pipeline (1) to pass on the boiler side wall, its characterized in that, outer casing (3) side sets up non-metallic expansion joint (5), inner casing (2) side sets up insulation construction (6), insulation construction (6) side sets up insulation construction stop device.
2. The waste heat boiler through-wall pipeline sealing structure according to claim 1, characterized in that the insulation structure limiting device is a pipe clamp (7), the pipe clamp (7) is positioned on the side of the insulation structure (6) far away from the inner guard plate (2), and the insulation structure (6) is positioned between the pipe clamp (7) and the inner guard plate (2).
3. The waste heat boiler through-wall pipeline sealing structure according to claim 1, wherein the heat insulation structure limiting device is a fixing plate (8), the cross-sectional shape of the fixing plate (8) is L-shaped, the fixing plate (8) comprises a transverse plate and a vertical plate, one end of the transverse plate is fixedly connected to the inner protection plate (2), the other end of the transverse plate is connected with the vertical plate, and the fixing plate (8) limits the heat insulation structure (6).
4. The waste heat boiler through-wall pipe sealing structure according to claim 3, characterized in that the number of the fixing plates (8) is more than two.
5. The waste heat boiler through-wall pipeline sealing structure according to claim 1, characterized in that the heat insulation structure (6) is made of a flexible heat insulation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121949613.1U CN216112553U (en) | 2021-08-18 | 2021-08-18 | Waste heat boiler wall-penetrating pipeline sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121949613.1U CN216112553U (en) | 2021-08-18 | 2021-08-18 | Waste heat boiler wall-penetrating pipeline sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216112553U true CN216112553U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121949613.1U Active CN216112553U (en) | 2021-08-18 | 2021-08-18 | Waste heat boiler wall-penetrating pipeline sealing structure |
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| Country | Link |
|---|---|
| CN (1) | CN216112553U (en) |
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2021
- 2021-08-18 CN CN202121949613.1U patent/CN216112553U/en active Active
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