CN217108704U - Pipeline sealing structure and pipeline assembly with same - Google Patents

Abstract

The utility model particularly relates to a pipeline sealing structure and have its pipeline subassembly, pipeline sealing structure include the fretwork and connect the ring, and two adjacent outer walls that connect the end of managing all are provided with the fretwork and connect the ring, and two adjacent gaps of connecting between the pipe including the butt joint gap that is formed between two fretwork butt joint rings. According to the utility model provides a pipeline sealing structure, fretwork butt joint ring can play and reduce thermal heat conduction effect, reduces the outer wall of butt joint pipe and two adjacent butt joint pipe between the temperature of butt joint gap department through fretwork butt joint ring, reduces the surface temperature of butt joint pipe subassembly the most probably.

Description

Pipeline sealing structure and pipeline assembly with same

Technical Field

The utility model relates to a seal structure technical field, concretely relates to pipeline seal structure and have its pipeline subassembly.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

The existing connection sealing between the sections of the sectional exhaust pipe has the connection modes of a double-sheet sealing ring structure, a single-sheet sealing ring, a non-sealing ring structure, an expansion joint connection structure, a V-shaped ring and the like, the connection modes respectively have own advantages and disadvantages, except for the expansion joint structure, other sealing structures, if sealing liquid is only depending on a hard-to-hard structure between solids, the liquid is difficult to seal, and the liquid can certainly leak out from the sealing position. The expansion joint structure has application limitation due to the reasons of large space requirement, more structural members, high cost and the like.

In winter, the temperatures of the wall of the exhaust pipe, the supercharger, the tail pipe and the like are very low, the initial exhaust temperature is not high, condensed liquid can be formed and leaks from various sealing parts, and the natural phenomenon cannot be avoided or eliminated.

If adopt sealed rope structure, utilize the sealed principle of filled type, can reduce liquid exhaust's possibility, nevertheless sealed rope structure needs the cooperation clearance between exhaust pipe section and the section less, and this is to the blast pipe of monomer cylinder cap, and the cooperation clearance can not be done littleer, consequently adopts sealed rope structure to solve monomer cylinder cap model and spouts liquid trouble, and is not too appropriate.

The double-piece sealing ring structure and the single-piece sealing ring structure belong to labyrinth sealing gas, liquid cannot be sealed due to the fact that the double-piece sealing ring structure and the single-piece sealing ring structure do not have a labyrinth structure for the liquid, the sealing ring structure does not depend on the clearance between a cold metal pipe and a hot metal pipe, the clearance is large in the cold state, the liquid cannot be sealed in the starting process, and the liquid cannot be generated after the hot metal pipe is started.

The expansion joint structure has good sealing performance, can well store partial liquid, but has high price and more parts, and is not suitable for large-scale popularization and application.

The V-shaped ring structure sealing measure depends on interference fit of V-shaped rings on inner walls and outer walls of a tube cavity, although complete sealing can be theoretically formed, in practice, liquid leaks out of micro gaps due to processing position degree errors, processing surface roughness, processing knife lines and roundness problems, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pipeline sealing structure and have its pipeline subassembly, the outer wall temperature that the purpose was solved the pipe assembly at least is high and the technical problem that sealing reliability is low, and this purpose is realized through following technical scheme:

the utility model discloses a first aspect provides a pipeline sealing structure, and pipeline sealing structure includes the fretwork and docks the ring, and two adjacent outer walls that dock the end that dock of managing all are provided with the fretwork and dock the ring, and two adjacent docks the gap between the pipe including the butt joint gap that is formed between two fretwork dock rings.

According to the utility model provides a pipeline sealing structure, fretwork butt joint ring can play and reduce thermal heat conduction effect, reduces the outer wall of butt joint pipe and two adjacent butt joint pipe between the temperature of butt joint gap department through fretwork butt joint ring, reduces the surface temperature of butt joint pipe subassembly the most probably.

Furthermore, the butt joint end of one butt joint pipe is provided with a plug connector which is positioned at the bottom of the hollow butt joint ring, and the butt joint end of the other butt joint pipe is provided with a plug groove which is positioned at the bottom of the hollow butt joint ring and is matched with the plug connector.

Furthermore, one side of the hollowed-out butt-joint ring, which is back to the butt-joint end, is provided with an opening structure.

Further, the pipeline sealing structure also comprises a plurality of support ribs which are arranged in the opening structure and distributed at intervals along the circumferential direction.

Further, the hollow butt joint ring and the butt joint pipe are arranged into an integrated structure.

Further, the pipeline sealing structure further comprises a connecting pipe hoop, and the connecting pipe hoop is arranged on the outer walls of the two hollowed-out butt joint rings of the two adjacent butt joint pipes.

Furthermore, the inner wall of the connecting pipe hoop is provided with an elastic sealing ring, and the elastic sealing ring is provided with a sealing lip extending into the butt joint gap.

Furthermore, the middle part of the sealing lip is provided with a lip mouth communicated with the butt joint gap, the sealing lip comprises two lip edges positioned at two sides of the lip mouth, and the two lip edges are respectively in sealing fit with two hollowed-out butt joint rings at two sides of the butt joint gap.

A second aspect of the utility model provides a pipeline assembly, pipeline assembly include two at least butt joint pipes, and two adjacent butt joint pipes are provided with the basis the utility model discloses a pipeline sealing structure of first aspect.

Further, the pipe assembly comprises an exhaust pipe assembly, the exhaust pipe assembly comprises an exhaust pipe and an exhaust manifold which are in butt joint, and the pipe sealing structure is arranged between the butt joint end of the exhaust pipe and the butt joint end of the exhaust manifold.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural view of an exhaust pipe assembly according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the exhaust pipe assembly shown in FIG. 1;

FIG. 3 is a schematic view of a portion of the exhaust pipe assembly of FIG. 2;

fig. 4 is a schematic structural diagram of an exhaust pipe according to an embodiment of the present invention;

fig. 5 is a schematic structural view of an exhaust manifold according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a connection pipe clamp according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view of the coupling clamp of FIG. 6;

wherein, the first and the second end of the pipe are connected with each other,

100. an exhaust pipe assembly;

10. an exhaust pipe; 11. inserting grooves; 12. a first hollow docking ring;

20. an exhaust manifold; 21. a plug-in connector; 22. a second hollow docking ring;

30. connecting a pipe hoop; 31. a ferrule body; 32. a seal ring; 321. a sealing lip; 3211. a lip; 3212. a lip.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof.

Although the terms first, second, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and "third," as well as other numerical terms, are not used herein to imply a sequence or order unless clearly indicated by the context. In addition, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

For convenience of description, spatially relative terms, such as "upper", "inner", "close", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 6, a first aspect of the present invention provides a pipe sealing structure, which includes a hollow-out docking ring, wherein the outer walls of two docking ends of two adjacent docking pipes (such as the exhaust pipe 10 and the exhaust manifold 20 in fig. 1 and 3) are provided with hollow-out docking rings (such as the first hollow-out docking ring 12 and the first hollow-out docking ring 22 in fig. 3), and the gap between two adjacent docking pipes includes a docking gap formed between two hollow-out docking rings.

According to the utility model provides a pipeline sealing structure, fretwork butt joint ring can play and reduce thermal heat conduction effect, reduces the outer wall of butt joint pipe and two adjacent butt joint pipe between the temperature of butt joint gap department through fretwork butt joint ring, reduces the surface temperature of butt joint pipe subassembly the most probably.

Specifically, according to the utility model discloses an embodiment, fretwork butt joint ring sets up to the integrated into one piece structure with the butt joint pipe, promptly, and the fretwork is to the part of butt joint pipe to the ring, and accessible casting integrated into one piece to this structural stability who improves the butt joint pipe, and reduce the manufacturing process degree of difficulty of butt joint pipe.

In order to explain the specific structure and technical effect of the duct sealing structure, the duct sealing structure provided in the embodiment of the present application is explained in detail by taking the exhaust pipe assembly 100 as an example.

According to the embodiment of the application, the butt end of one butt joint pipe is provided with a plug 21 located at the bottom of the hollowed butt joint ring, and the butt end of the other butt joint pipe is provided with a plug groove 11 located at the bottom of the hollowed butt joint ring and matched with the plug 21.

In this embodiment, the plug 21 and the insertion groove 11 form a main sealing structure of two butt pipes, and an L-shaped butt gap is formed between the plug 21 and the insertion groove 11, so as to increase resistance and path of gas flowing through the butt gap, and improve the sealing effect between the plug 21 and the insertion groove 11.

Specifically, the butt joint end of the exhaust manifold 20 is provided with a second hollow butt joint ring 22, the bottom of the second hollow butt joint ring 22 is provided with a plug 21, the butt joint end of the exhaust pipe 10 is provided with a first hollow butt joint ring 12, and the bottom of the first hollow butt joint ring 12 is provided with a plug groove 11 matched with the plug 21.

According to the embodiment of the application, one side of the hollowed-out butt joint ring back to the butt joint end is set to be an opening structure, and the pipeline sealing structure further comprises a plurality of support ribs which are arranged in the opening structure and distributed at intervals along the circumferential direction.

In this embodiment, in order to reduce the outer wall temperature of blast pipe 10, the outer wall that adopts the grafting end at blast pipe 10 sets up the fretwork and docks the ring, sets up to open structure through the one side that docks the end with the fretwork and docks the ring back to, open structure has the heat dissipation effect to can distribute away the inside steam of fretwork and docks the ring through open structure.

Meanwhile, after the hollow butt joint ring is arranged on the outer wall of the inserting end, in order to improve the structural strength of the hollow butt joint ring, a plurality of support ribs can be added in the hollow area of the hollow butt joint ring, and the support ribs should be as small as possible so as to reduce the heat conduction through the support ribs and reduce the temperature of the outer wall of the exhaust pipe 10 as much as possible.

As shown in fig. 1 and 6, the embodiment of the present application further provides that the pipe sealing structure further includes a connection pipe hoop 30, and the connection pipe hoop 30 is mounted on the outer walls of the two hollowed-out butt-joint rings of two adjacent butt-joint pipes.

In this embodiment, a connection pipe clamp 30 may be added to the connection portion between two adjacent sections of the exhaust pipe assembly 100, and the connection pipe clamp 30 includes a clamp body 31, and a sealing ring 32 made of a high temperature resistant elastic material, which may be polyimide, phenyl silicone rubber, or a special high temperature resistant silicone rubber, is disposed on an inner wall of the clamp body 31. After the high-temperature gas in the exhaust pipe assembly 100 leaks out through the main sealing channel, because the leakage quantity is very little to the influence of temperature drop, simultaneously, the fretwork docking collar also plays the hindrance effect to heat-conducting temperature, according to the experiment, when gaseous temperature 700 ℃ in the pipeline, need control the outer wall temperature of exhaust pipe assembly 100 to 400 ℃ or below 350 ℃, at this moment, materials such as polyimide or special high temperature resistant silica gel just can satisfy the operation requirement to this can make sealing washer 32 can exert normal sealing effect.

As shown in fig. 6 and 7, according to the embodiment of the present application, the inner wall of the connection ferrule 30 is provided with an elastic sealing ring 32, and the elastic sealing ring 32 is provided with a sealing lip 321 extending into the abutting gap. Further, the middle part of the sealing lip 321 is provided with a lip 3211 communicated with the butt joint gap, the sealing lip 321 includes two lip edges 3212 located at two sides of the lip 3211, and the two lip edges 3212 are respectively in sealing fit with two hollowed-out butt joint rings at two sides of the butt joint gap.

In this embodiment, the high-temperature gas leaked from the exhaust pipe assembly 100 leaks to the inner wall of the connecting pipe clamp 30 through the main sealing structure of the pipe, at this time, the sealing ring 32 connected to the inner wall of the pipe clamp 30 is in a compressed state, especially, the sealing ring 32 bears a larger axial pressure with the sealing lip 321 matched with the butt seam, the lip bottom of the sealing lip 321 bears a certain axial pressure, the lip 3211 of the sealing lip 321 also bears an axial compression force, so that the contact surfaces of the two lip edges 3212 and the butt seam become wider, and the contact pressure is also increased, thereby better sealing the high-pressure gas inside the pipe, and further achieving the self-sealing effect.

When the exhaust pipe assembly 100 is in a cold state, the air pressure inside the exhaust pipe assembly 100 is small, the axial pressure applied to the sealing ring 32 and the sealing lip 321 is weak, and at this time, the sealing ring 32 and the sealing lip 321 completely seal the butt joint gap between the pipe assemblies by means of the elasticity of the sealing ring 32 and the sealing lip 321, so that leakage of black liquid discharged after the cold start of the locomotive can be prevented, and traces of black pollution liquid cannot be seen on the outer wall of the exhaust pipe assembly 100.

A second aspect of the utility model provides a pipeline assembly, pipeline assembly include two at least butt joint pipes, and two adjacent butt joint pipes are provided with the basis the utility model discloses a pipeline sealing structure of first aspect.

According to the utility model provides a pipeline assembly, the pipeline sealing structure purpose of this application reduces the surface temperature of blast pipe 10 as far as possible, seals blast pipe assembly 100 through high temperature resistant elastic material, can seal high-temperature gas, also can seal the liquid that produces when starting the cold car simultaneously to, along with the rising of seal gas pressure, pipeline sealing structure's sealing force strengthens thereupon, can play better sealed effect. The duct seal structure preferably functions in conjunction with the primary seal between the middle and segments of the exhaust duct assembly 100 and may also function as a single seal structure for sealing other ducts.

According to an embodiment of the present application, the duct assembly includes an exhaust pipe assembly 100, the exhaust pipe assembly 100 includes an exhaust pipe 10 and an exhaust manifold 20 that are butted, and a duct sealing structure is disposed between a butted end of the exhaust pipe 10 and a butted end of the exhaust manifold 20.

The exhaust pipe component 100 with the sectional structure can be applied to the exhaust pipe component 100 with the sectional structure, is used for sealing the leakage of high-temperature and high-pressure gas in the exhaust pipe component 100, and can solve the leakage phenomenon that black liquid leaks from the exhaust pipe component 100 in winter. The key improvement point of this application is that the temperature of reducing gas leakage department makes the temperature of leakage department be less than the temperature that tolerates of the sealing washer 32 of connecting pipe hoop 30, for this reason, this application has proposed to adopt the fretwork to the ring in gas leakage department, and the fretwork plays and separates the temperature effect to this reduces the temperature of gas leakage department, makes connecting pipe hoop 30 possess normal sealing performance, reaches the effect in gap between sealed blast pipe 10 and the exhaust manifold 20 with this.

Through using the pipeline sealing structure of this application, not only can play the effect to the seam between the sealed pipeline subassembly, still have the pleasing to the eye advantage of outward appearance, make the user use the in-process of pipeline subassembly not have gas leakage weeping trouble to this satisfaction of improvement user and the credit degree of product.

In this embodiment, the utility model discloses a pipeline assembly has the utility model discloses a pipeline seal structure's of first aspect all technological effects no longer give unnecessary details here.

It should be understood that the above embodiments only illustrate the technical features related to the improvement point of the present invention, and do not represent that the pipe sealing structure and the pipe assembly having the same of the present invention do not have other technical features, and will not be described in detail herein.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a pipeline sealing structure, its characterized in that, pipeline sealing structure includes the fretwork and docks the ring, and two outer walls that butt joint the end of two adjacent butt joint pipes all are provided with the fretwork is to the ring, just gap between two adjacent butt joint pipes is including being formed in two butt joint gap between the fretwork butt joint ring.

2. The pipe sealing structure according to claim 1, wherein the butt end of one butt pipe is provided with a plug at the bottom of the hollow butt ring, and the butt end of the other butt pipe is provided with a plug groove at the bottom of the hollow butt ring and engaged with the plug.

3. The pipe sealing structure according to claim 1, wherein a side of the hollow docking ring facing away from the docking end is configured as an open structure.

4. The duct sealing structure of claim 3, further comprising a plurality of circumferentially spaced support ribs disposed within the open structure.

5. The duct sealing structure of claim 1, wherein the hollowed-out docking ring and the docking pipe are provided as an integral structure.

6. The duct sealing structure of claim 1, further comprising a connection pipe clamp mounted to outer walls of the two hollowed-out docking rings of the two adjacent docking ducts.

7. The pipe sealing structure of claim 6, wherein the inner wall of the connection pipe clamp is provided with an elastic sealing ring provided with a sealing lip extending into the butt seam.

8. The pipe sealing structure according to claim 7, wherein the sealing lip is provided with a lip mouth communicating with the butt joint gap, and the sealing lip comprises two lip edges located at two sides of the lip mouth, and the two lip edges are respectively in sealing fit with two hollowed-out butt joint rings at two sides of the butt joint gap.

9. A duct assembly, characterized in that the duct assembly comprises at least two butt-jointed ducts, adjacent two butt-jointed ducts being provided with a duct sealing structure according to any one of claims 1-8.

10. The conduit assembly of claim 9, wherein the conduit assembly comprises an exhaust pipe assembly comprising a butted exhaust pipe and an exhaust manifold, the conduit seal structure disposed between a butted end of the exhaust pipe and a butted end of the exhaust manifold.

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