CN114719128A

CN114719128A - Pipeline heat preservation device, vehicle exhaust system and vehicle

Info

Publication number: CN114719128A
Application number: CN202210482228.3A
Authority: CN
Inventors: 朱光贞; 桂莹; 杨泽辰; 王迪; 黄凯; 王科星
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-07-08

Abstract

The invention belongs to the technical field of pipeline heat preservation, and discloses a pipeline heat preservation device, a vehicle exhaust system and a vehicle, wherein the pipeline heat preservation device is arranged on the pipe wall of a pipeline and comprises a plurality of fixing components and heat preservation components; the plurality of fixing assemblies are all used for being fixedly arranged on the pipe wall and arranged at intervals along the length direction of the pipeline, and when the total length of the pipeline changes, the distance between every two adjacent fixing assemblies changes; all be provided with a heat preservation subassembly between two arbitrary adjacent fixed subassemblies, the heat preservation subassembly can slide along the length direction of pipeline for fixed subassembly to when the distance between two adjacent fixed subassemblies changes, avoid the heat preservation subassembly to take place the extrusion or tear.

Description

Pipeline heat preservation device, vehicle exhaust system and vehicle

Technical Field

The invention relates to the technical field of pipeline heat preservation, in particular to a pipeline heat preservation device, a vehicle exhaust system and a vehicle.

Background

The exhaust system of the vehicle is used for discharging automobile exhaust, and in order to ensure the exhaust effect and the service life of the exhaust pipeline, a heat preservation device is required to be arranged on the exhaust pipeline.

At present, the general scheme of arranging the heat preservation device on the exhaust pipeline is that the heat preservation structure made of heat preservation materials is arranged on the peripheral wall of the exhaust pipeline, and the two ends of the heat preservation structure are fixed on the exhaust pipeline, so that the heat preservation effect is realized on the pipeline. But because insulation material's heat preservation effect is limited, can't make pipeline temperature keep invariable, in environment such as cold weather, the temperature of pipeline can produce great fluctuation, leads to the pipeline to take place expend with heat and contract with cold, arouses the change of pipeline overall length, and insulation construction both ends are fixed, must lead to insulation construction excessively to extrude or tear, causes insulation construction's damage, influences its heat preservation effect.

Therefore, a pipeline thermal insulation device, a vehicle exhaust system and a vehicle are needed to solve the above problems.

Disclosure of Invention

According to one aspect of the invention, the invention provides a pipeline heat preservation device which can preserve heat of a pipeline and prevent a heat preservation component from being extruded or torn when the length of the pipeline changes.

In order to achieve the purpose, the invention adopts the following technical scheme:

a pipe insulation device for placement on a pipe wall of a pipe, comprising:

a plurality of fixing assemblies which are fixedly arranged on the pipe wall and are arranged at intervals along the length direction of the pipeline;

the heat preservation assemblies are arranged in a plurality of the heat preservation assemblies, the heat preservation assemblies are all used for being sleeved on the pipe wall and are arranged at intervals along the length direction of the pipeline, one heat preservation assembly is arranged between any two adjacent fixing assemblies, and the heat preservation assemblies can slide along the length direction of the pipeline relative to the fixing assemblies.

As a preferable scheme of the pipeline heat preservation device, the fixing assembly includes a plurality of fixing blocks for being fixedly disposed on the pipe wall, and the plurality of fixing blocks are disposed on the pipe wall at intervals along a circumferential direction of the pipeline.

As a preferred scheme of the pipeline heat preservation device, the fixing assembly further comprises a plurality of blocking pieces, the blocking pieces are connected with the fixing blocks in a one-to-one correspondence manner, the blocking pieces extend along the length direction of the pipeline, and the heat preservation assembly is arranged between the pipe wall and the blocking pieces.

As a preferable scheme of the pipeline heat preservation device, the fixing assembly includes a fixing ring for fixing the pipe wall, and the fixing ring is sleeved on the pipe wall.

As a preferable embodiment of the pipe heat preservation device, the fixing member further includes a blocking platform provided on the fixing ring, the blocking platform extends along a length direction of the pipe, and the heat preservation member is provided between the pipe wall and the blocking platform.

As a preferable aspect of the pipe heat insulating device, the heat insulating member includes a ceramic fiber mat, and the ceramic fiber mat is configured to be fitted to the pipe wall and to be slidable in a longitudinal direction of the pipe with respect to the fixing member.

As a preferable mode of the pipe heat-insulating device, the heat-insulating assembly further includes a corrugated aluminum pipe fixedly disposed on an outer peripheral surface of the ceramic fiber mat.

In a preferred embodiment of the pipe heat insulating device, both end portions of the ceramic fiber mat and the corrugated aluminum pipe in the longitudinal direction of the pipe are fixed by rivets.

According to another aspect of the present invention, there is provided a vehicle exhaust system comprising a pipe for exhausting air and the pipe thermal insulating device provided on a pipe wall of the pipe.

According to yet another aspect of the invention, a vehicle is provided that includes the vehicle exhaust system described above.

The invention has the beneficial effects that:

the invention provides a pipeline heat preservation device, wherein a plurality of heat preservation components are sleeved on the pipe wall to play a role in heat preservation. A plurality of fixing assemblies are arranged on the pipe wall at intervals along the length direction of the pipeline, and the heat insulation assembly is arranged between any two adjacent fixing assemblies. Thereby when the pipeline receives external environment influence and takes place expend with heat and contract with cold and lead to the pipe length to change, the distance between two adjacent fixed subassemblies changes, and the length of heat preservation subassembly can not change along with the change of pipe length thereupon to can slide along the length direction of pipeline for fixed subassembly, and then avoid heat preservation subassembly to take place the extrusion or tear, adapt to the change of pipe length.

The invention further provides a vehicle exhaust system, and the heat insulation assembly of the pipeline heat insulation device is prevented from being damaged by the pipeline heat insulation device, so that the heat insulation effect of the pipeline is improved.

The invention also provides a vehicle, wherein the exhaust pipeline in the exhaust system has good heat insulation effect, and the heat insulation assembly is not easy to damage.

Drawings

FIG. 1 is a schematic view of the entire appearance of a pipe thermal insulating apparatus according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of section A-A of FIG. 1;

FIG. 3 is a schematic structural diagram of a pipeline thermal insulation device in an embodiment of the present invention;

FIG. 4 is a schematic structural view of a heat-insulating assembly in an embodiment of the present invention.

In the figure:

100. a tube wall;

1. a fixing assembly; 11. a fixed block; 12. a baffle plate; 13. a fixing ring;

2. a heat preservation assembly; 21. a ceramic fiber mat; 22. a corrugated aluminum pipe.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

A heat preservation device is arranged on an exhaust pipeline of the vehicle. At present set up heat preservation device's general scheme on blast pipe way does, will set up in the periphery wall of exhaust pipe by the insulation construction that insulation material made to be fixed in exhaust pipe with insulation construction's both ends, but in environment such as cold weather, the temperature of pipeline can produce great fluctuation, leads to the pipeline to take place expend with heat and contract with cold, arouses the change of pipeline overall length, and insulation construction both ends are fixed, must lead to insulation construction excessive extrusion or tear, cause insulation construction's damage.

To above-mentioned problem, this embodiment provides a pipeline heat preservation device, can play the heat preservation effect to the pipeline, when the pipe length changes, avoids heat preservation subassembly to take place the extrusion or tear simultaneously, can be used to vehicle exhaust pipe heat preservation technical field, also can be used to the heat preservation of other pipelines.

FIG. 1 is a schematic view showing the overall appearance of a pipe thermal insulating apparatus according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of section A-A of FIG. 1; fig. 3 shows a schematic structural diagram of a pipeline thermal insulation device in an embodiment of the invention. Referring to fig. 1 to 3, the pipeline thermal insulation device is used for a pipe wall 100 arranged on a pipeline, and specifically, wraps the outer circumferential surface of the pipe wall 100. Pipeline heat preservation device is provided with a plurality ofly including fixed subassembly 1 and heat preservation subassembly 2, and a plurality of heat preservation subassemblies 2 all are used for the cover to locate pipe wall 100, and heat preservation subassembly 2 adopts insulation material to make to play the heat preservation effect to the pipeline.

With continued reference to fig. 1-3, the fixing assemblies 1 are provided in plural, the fixing assemblies 1 are all used for being fixedly arranged on the pipe wall 100 and arranged at intervals along the length direction of the pipeline, and when the pipeline is affected by the external environment and the pipe length changes due to expansion with heat and contraction with cold, the distance between two adjacent fixing assemblies 1 changes accordingly. The plurality of heat preservation assemblies 2 are arranged at intervals along the length direction of the pipeline, and when the pipeline is bent, the shape of the heat preservation assemblies 2 is changed in an adaptive manner, for example, the end surfaces at the two ends are changed into inclined surfaces from flat surfaces, or are in an arc shape, and the like. All be provided with a heat preservation subassembly 2 between two arbitrary adjacent fixed subassemblies 1, heat preservation subassembly 2 can slide along the length direction of pipeline for fixed subassembly 1. Therefore, when the distance between two adjacent fixed assemblies 1 is changed, the length of the heat insulation assembly 2 cannot be changed along with the change of the length of the pipe, and the heat insulation assembly can slide along the length direction of the pipeline relative to the fixed assemblies 1, so that the heat insulation assembly 2 is prevented from being extruded or torn, and the heat insulation assembly can adapt to the change of the length of the pipe.

With continued reference to fig. 1 to 3, the fixing assembly 1 has a specific structure in which the fixing assembly 1 includes a plurality of fixing blocks 11 for being fixedly disposed on the pipe wall 100, and the plurality of fixing blocks 11 are disposed on the pipe wall 100 at intervals along a circumferential direction of the pipeline. The number of the fixing blocks 11 is generally 2 to 12, preferably 6. The heat preservation subassembly 2 sets up between two adjacent fixed subassemblies 1, specifically is between the fixed block 11 of adjacent fixed subassembly 1 to when heat preservation subassembly 2 slides along the length direction of pipeline, fixed block 11 can play limiting displacement to heat preservation subassembly 2, prevents that adjacent heat preservation subassembly 2 from extrudeing each other, avoids simultaneously because a plurality of heat preservation subassemblies 2 slide to one side of pipeline and lead to the opposite side of pipeline not have corresponding heat preservation subassembly 2 to keep warm to it. Optionally, since the fixing block 11 is located at a position without the thermal insulation component 2 or other thermal insulation structures, in order to prevent heat of the pipeline from being dissipated from the fixing block 11, the fixing block 11 is made of a thermal insulation material.

With continued reference to fig. 1 to 3, the fixing assembly 1 further includes a plurality of blocking pieces 12, the plurality of blocking pieces 12 are connected to the plurality of fixing blocks 11 in a one-to-one correspondence manner, the blocking pieces 12 extend along the length direction of the pipeline, the heat insulation assembly 2 is arranged between the pipe wall 100 and the blocking pieces 12, and the blocking pieces 12 are used for preventing the heat insulation assembly 2 from radially separating from the pipe wall 100 along the pipeline, so that the heat insulation assembly 2 can be stably arranged on the outer peripheral surface of the pipe wall 100. Specifically, separation blade 12, fixed block 11 and pipe wall 100 form the holding tank, and heat preservation subassembly 2 pegs graft in the holding tank and can slide along the length direction of pipeline in the holding tank.

As an alternative, the fixing assembly 1 includes a fixing ring for fixing and disposing on the tube wall 100, and the fixing ring is configured to be sleeved on the tube wall 100. The effect of solid fixed ring is similar with fixed block 11, all is used for playing limiting displacement to heat preservation subassembly 2, and reinforcing heat preservation subassembly 2 is to the heat preservation effect of pipeline, but is different with fixed block 11, and fixed block 11 is then along the circumferencial direction interval of pipeline, and solid fixed ring then is cyclic annular, and optionally, solid fixed ring adopts insulation material to make, and it can avoid the heat of pipeline to scatter and disappear from the part between two adjacent fixed blocks 11 of fixed subassembly 1 to further strengthen its heat preservation effect.

Further, fixed subassembly 1 still includes to set up in solid fixed ring's fender platform, keeps off the platform and extends along the length direction of pipeline, and heat preservation subassembly 2 is used for setting up between pipe wall 100 and fender platform. Similar to the baffle 12, the abutment is used to prevent the insulating assembly 2 from separating from the pipe wall 100 in the radial direction of the pipeline. Alternatively, the blocking platform is annular and is disposed on the outer circumferential surface of the fixing ring, or the blocking platform is sheet-shaped and is disposed in plurality, and the plurality of blocking platforms are disposed on the outer circumferential surface of the fixing ring at intervals along the circumferential direction of the fixing ring.

Fig. 4 shows a schematic structural diagram of a heat insulating assembly in an embodiment of the present invention. Referring to fig. 3 and 4, the thermal insulation member 2 includes a ceramic fiber mat 21, and the ceramic fiber mat 21 is configured to be sleeved on the pipe wall 100 and can slide along the length direction of the pipeline relative to the fixing member 1. In order to enhance the heat preservation and insulation effect, the ceramic fiber felt 21 is attached to the pipe wall 100. The ceramic fiber mat 21 is a heat-insulating material using glass fibers as a raw material, is used as a substrate layer of the heat-insulating component 2, and has the characteristics of high temperature resistance, small heat conductivity coefficient, corrosion resistance, oxidation resistance, good fiber elasticity under high temperature conditions, good sound absorption, and easiness in secondary processing and installation.

Furthermore, the heat preservation assembly 2 also comprises a corrugated aluminum pipe 22 fixedly arranged on the outer peripheral surface of the ceramic fiber felt 21, so that the heat preservation assembly 2 forms a double-layer heat preservation structure, the heat resistance of the heat preservation assembly is further enhanced, the heat conductivity coefficient is reduced, the temperature resistance of the heat preservation assembly is about 640 ℃, and the heat conductivity coefficient is 0.45-0.54W/(m.K). In addition, the ceramic fiber felt 21 and the corrugated aluminum pipe 22 both have certain elasticity, can be designed into different specifications according to pipelines with different shapes and sizes, and are suitable for batch production.

With continued reference to fig. 3 and 4, the ceramic fiber mat 21 and the corrugated aluminum pipe 22 are fixed at their respective ends in the length direction of the pipe by rivets so that the ceramic fiber mat 21 and the corrugated aluminum pipe 22 are stably connected to prevent one end of one of the ceramic fiber mat 21 and the corrugated aluminum pipe 22 from being separated from the other during sliding of the insulating assembly 2. Alternatively, the ceramic fiber mat 21 and the corrugated aluminum pipe 22 are fixed at either end in the length direction of the pipe by a plurality of rivets arranged at intervals in the circumferential direction.

The embodiment also provides a vehicle exhaust system, including pipeline and above-mentioned pipeline heat preservation device, this pipeline is exhaust pipe for the exhaust, and pipeline heat preservation device sets up in the pipe wall of pipeline, and it can avoid pipeline heat preservation device's heat preservation subassembly 2 to damage, promotes the heat preservation effect of pipeline.

The embodiment also provides a vehicle, including above-mentioned vehicle exhaust system, the exhaust pipe among its exhaust system keeps warm effectually, and keeps warm subassembly 2 not fragile.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pipe insulating device for being arranged on a pipe wall (100) of a pipe, comprising:

a plurality of fixing assemblies (1) are arranged, and the plurality of fixing assemblies (1) are fixedly arranged on the pipe wall (100) and are arranged at intervals along the length direction of the pipeline;

the heat preservation assembly (2) is provided with a plurality of, a plurality of heat preservation assembly (2) all are used for the cover to locate pipe wall (100) are followed the length direction interval of pipeline sets up, and arbitrary two are adjacent all be provided with one between fixed subassembly (1) heat preservation assembly (2), heat preservation assembly (2) can for fixed subassembly (1) are followed the length direction of pipeline slides.

2. The pipeline thermal insulation device according to claim 1, wherein the fixing assembly (1) comprises a plurality of fixing blocks (11) fixedly arranged on the pipe wall (100), and the fixing blocks (11) are arranged on the pipe wall (100) at intervals along the circumferential direction of the pipeline.

3. The pipeline heat preservation device according to claim 2, characterized in that the fixing assembly (1) further comprises a plurality of blocking pieces (12), the blocking pieces (12) are connected with the fixing blocks (11) in a one-to-one correspondence manner, the blocking pieces (12) extend along the length direction of the pipeline, and the heat preservation assembly (2) is arranged between the pipe wall (100) and the blocking pieces (12).

4. The pipe insulation device according to claim 1, characterized in that the fixing assembly (1) comprises a fixing ring for fixing the pipe wall (100), and the fixing ring is used for sleeving the pipe wall (100).

5. The pipeline heat preservation device according to claim 4, characterized in that the fixing component (1) further comprises a baffle table arranged on the fixing ring, the baffle table extends along the length direction of the pipeline, and the heat preservation component (2) is arranged between the pipe wall (100) and the baffle table.

6. The pipeline insulation device according to any one of claims 1 to 5, characterized in that the insulation component (2) comprises a ceramic fiber felt (21), and the ceramic fiber felt (21) is used for sleeving the pipeline wall (100) and can slide along the length direction of the pipeline relative to the fixing component (1).

7. The pipe insulation according to claim 6, wherein the insulation assembly (2) further comprises a corrugated aluminum pipe (22) fixedly disposed on an outer peripheral surface of the ceramic fiber mat (21).

8. The pipe heat-insulating device according to claim 7, wherein both end portions of the ceramic fiber mat (21) and the corrugated aluminum pipe (22) in the length direction of the pipe are respectively fixed by rivets.

9. A vehicle exhaust system comprising a pipe for exhausting and a pipe thermal insulation device according to any one of claims 1 to 8, the pipe thermal insulation device being provided to a pipe wall (100) of the pipe.

10. A vehicle comprising the vehicle exhaust system according to claim 9.