CN210141417U

CN210141417U - Pipeline protection assembly

Info

Publication number: CN210141417U
Application number: CN201920596094.1U
Authority: CN
Inventors: 赵剑; 王丹; 张超; 黄欢; 孙斌
Original assignee: China Shenhua Energy Co Ltd; Shenhua Shendong Coal Group Co Ltd
Current assignee: China Shenhua Energy Co Ltd; Shenhua Shendong Coal Group Co Ltd
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2020-03-13
Anticipated expiration: 2029-04-28

Abstract

The utility model discloses a pipeline protection component. The pipeline protection component comprises a first pipeline and a second pipeline, and further comprises: a buffer tube; the buffer tube is arranged in a sealing manner and is positioned in the first pipeline, the buffer tube and the first pipeline extend in the same direction, and a gap is reserved between the outer wall of the buffer tube and the inner wall of the first pipeline; the gas outlet of the second pipeline is communicated on the buffer tube in a sealing mode, the buffer tube comprises an air inlet end face and a sealing end face which are arranged oppositely, the air inlet end face is located on the upstream of the sealing end face along the flowing direction of the fluid in the first pipeline, an air inlet hole is formed in the air inlet end face, and at least one of the tube wall and the sealing end face of the buffer tube is provided with an exhaust hole. The utility model provides a pipeline protection component has avoided carrying the pipeline of hot-fluid and the pipeline of carrying the cold fluid to take place the phenomenon that the pipeline of fluid high-speed impact carried the hot-fluid again in intersection, prevents to carry the pipeline of hot-fluid to break, has increased the security of pipeline, has reduced the cost in business.

Description

Pipeline protection assembly

Technical Field

The utility model relates to a fluid transport technical field especially relates to a pipeline protection component.

Background

The pipeline is an important way for transporting fluid, and in the practical application process, a plurality of pipelines for transporting fluid are often communicated with each other to form a pipeline network.

Fig. 1 is a schematic diagram of a prior art junction of pipes for transporting hot fluid and cold fluid. Wherein the arrows in the vertical direction in FIG. 1

Direction of flow of cold fluid, arrows in horizontal direction

Refers to the direction of flow of the heated fluid. As shown in fig. 1, there are heat pipes for transporting hot fluid in the prior art

And a cold pipe for conveying a cold fluid

The phenomenon of communication. Heat pipe

Cold mixing pipeline

The hot flow and the cold flow are directly converged at the communication part to the hot pipeline

In the heat pipe, the fluid after the intersection can be in the heat pipe due to larger temperature difference

Middle-close cold pipeline

Where a greater flow velocity is generated to impact the heat pipe

Figure DEST_PATH_GDA00023606585400000110

Heat pipe

Figure DEST_PATH_GDA00023606585400000111

The high-pressure high-temperature fluid is easy to break and damage under the action of larger impact, on one hand, the high-pressure high-temperature fluid leaks out, and safety accidents are caused; on the other hand, the heat pipeline is obviously reduced

Figure DEST_PATH_GDA00023606585400000112

The service life of (2) and the cost of enterprises are increased.

Therefore, it is necessary to solve the above-mentioned technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pipeline protection component to solve the problem that exists among the prior art, avoid carrying the pipeline of hot-fluid and the pipeline of carrying the cold fluid to take place the phenomenon that the pipeline of fluid high-speed impact carried the hot-fluid in the intersection, prevent to carry the pipeline of hot-fluid and break, increase the security of pipeline, reduce the cost in business.

The utility model discloses a pipeline protection subassembly, including first pipeline and the second pipeline that is linked together, the fluidic temperature in first pipeline is higher than the fluidic temperature in the second pipeline still includes: a buffer tube; the buffer tube is arranged in a sealing manner and is positioned in the first pipeline, the buffer tube extends in the same direction as the first pipeline, and a gap is reserved between the outer wall of the buffer tube and the inner wall of the first pipeline; the gas outlet of the second pipeline is communicated with the buffer tube in a sealing mode, the buffer tube comprises an air inlet end face and a sealing end face which are arranged oppositely, the flowing direction of the fluid in the first pipeline is followed, the air inlet end face is located at the upstream of the sealing end face, an air inlet hole is formed in the air inlet end face, and at least one of the tube wall of the buffer tube and the sealing end face is provided with an exhaust hole.

Optionally, the air inlet end face is a conical face, and a tip of the air inlet end face extends in a direction away from the sealing end face.

Optionally, the number of the air intake holes is plural.

Optionally, the plurality of air inlet holes are divided into a plurality of groups, and the plurality of air inlet holes in each group define an air inlet line on the conical surface, where the air inlet line is a generatrix of the conical surface.

Optionally, the sets of air inlet lines are evenly distributed around the circumference of the conical surface.

Optionally, the air outlet of the second conduit communicates with the wall of the buffer tube.

Optionally, the vent hole opens on the wall of the buffer tube and is located downstream of the buffer tube in the direction of flow of the fluid in the first conduit.

Optionally, a plurality of the exhaust holes are uniformly distributed in multiple groups, and the exhaust holes in each group are uniformly arranged along the circumferential direction of the buffer tube to define exhaust lines.

Optionally, the distance between any two adjacent exhaust lines gradually decreases in a direction away from the air inlet end face.

Optionally, the central axis of the buffer tube is arranged coincident with the central axis of the first conduit.

The utility model provides a pipeline protection component, the low-temperature fluid in the second pipeline gets into in the buffer tube earlier, part high-temperature fluid gets into in the buffer tube from the inlet port and mixes with the low-temperature fluid in the buffer tube, form the miscarriage after the low-temperature fluid in the buffer tube mixes with the high-temperature fluid, the miscarriage of miscarriage and high-temperature fluid in the buffer tube reduces, back in exhausting hole discharge to first pipeline, the thermal shock of high-temperature fluid and low-temperature fluid direct contact production in first pipeline has been avoided, the slow speed of high-temperature fluid and low-temperature fluid has been realized, progressive blending, prevent that first pipeline from breaking, the security of first pipeline has been increased, the life of first pipeline has effectively been prolonged, the enterprise cost is reduced, also convenient to detach and change after the damage of mainly taking place thermal shock effect, the maintenance cost is reduced.

Drawings

The preferred embodiments of the present invention will hereinafter be described in detail to facilitate understanding of the objects and advantages of the invention, with reference to the accompanying drawings, in which:

fig. 1 is a schematic diagram of a prior art junction of pipes for transporting hot fluid and cold fluid.

Fig. 2 is a schematic structural diagram of a pipeline protection assembly according to an alternative embodiment of the present invention.

Fig. 3 is a left side view of fig. 2.

Fig. 4 is a schematic view of the flow state of the fluid in the pipe protective assembly according to an alternative embodiment of the present invention.

Detailed Description

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like as referred to or as may be referred to in this specification are defined with respect to the configuration shown in the drawings, and the terms "inner" and "outer" refer to directions toward and away from the geometric center of a particular component and are relative terms, and thus may be changed accordingly depending on the position and the state of use of the particular component. Therefore, these and other directional terms should not be construed as limiting terms.

Fig. 2 is a schematic structural view of the pipeline protection assembly provided in the optional embodiment of the present invention, fig. 3 is a left side view of fig. 2, and fig. 4 is a schematic view of a flow state of the fluid in the pipeline protection assembly provided in the optional embodiment of the present invention. As shown in fig. 2 to 4, the utility model provides a pipeline protection component, include: a first conduit 1 and a second conduit 2 in communication, and a buffer tube 3.

Referring to fig. 2 to 4, the temperature of the fluid in the first pipeline 1 is higher than the temperature of the fluid in the second pipeline 2, which defines that the fluid in the first pipeline 1 is a high temperature fluid, the fluid in the second pipeline 2 is a low temperature fluid, an arrow C in fig. 4 is a flow direction of the low temperature fluid, and D is a flow direction of the high temperature fluid. In the actual operation process, the pressure of the fluid in the second pipeline 2 is controlled to be higher than that of the fluid in the first pipeline 1, and the low-temperature fluid in the second pipeline 2 enters the first pipeline 1 to be mixed with the high-temperature fluid under the driving of the pressure difference.

The buffer tube 3 is arranged in a sealing manner and is positioned in the first pipeline 1, the buffer tube 3 extends in the same direction as the first pipeline 1, and a gap is reserved between the outer wall of the buffer tube 3 and the inner wall of the first pipeline 1; the air outlet of the second pipe 2 is hermetically communicated with the buffer pipe 3, the buffer pipe 3 includes an air inlet end face 31 and a sealing end face 34 which are oppositely arranged, along the flow direction of the fluid in the first pipe 1, the air inlet end face 31 is located at the upstream of the sealing end face 34, an air inlet hole 32 is formed in the air inlet end face 31, and an arrow E in fig. 4 is the flow direction of the fluid in the buffer pipe 3; at least one of the wall of the buffer tube 3 and the sealing end face 34 is provided with a vent hole 33.

It should be noted that the fluid described herein may be either a gas or a liquid. The buffer tube 3 may be fixed within the first pipe 1 by means of a connector piece.

The embodiment of the utility model provides a pipeline protection component, the low-temperature fluid in the second pipeline 2 gets into in the buffer tube 3 earlier, part high-temperature fluid gets into in the buffer tube 3 from the inlet port 32 and mixes with the low-temperature fluid in the buffer tube 3 mutually, form the mixed fluid after the low-temperature fluid in the buffer tube 3 mixes with the high-temperature fluid, the mixed fluid in the buffer tube 3 reduces with the difference in temperature of high-temperature fluid, after discharging to the first pipeline 1 in from the exhaust hole 33, the thermal shock that high-temperature fluid and low-temperature fluid direct contact produced in the first pipeline 1 has been avoided, the slow speed of high-temperature fluid and low-temperature fluid, progressive blending is realized, prevent that first pipeline 1 from breaking, the security of first pipeline 1 has been increased, the life of first pipeline 1 has effectively been prolonged, the enterprise cost has been reduced, buffer tube 3 that mainly takes place the thermal shock effect also is convenient for dismantle and change after the damage, the maintenance cost is reduced.

Optionally, the air inlet end face 31 is a tapered face, and a tip of the air inlet end face 31 extends in a direction away from the sealing end face 34, and the tapered face provided by this embodiment enables the high-temperature fluid to smoothly bypass after contacting the tapered face, so that disturbance of the high-temperature fluid is reduced, stability of the high-temperature fluid is maintained, and further reduction of an impact effect on the first pipeline 1 is facilitated.

As an optional implementation process, the number of the air inlet holes 32 is plural, which can effectively increase the volume of the high-temperature fluid entering the buffer tube 3, and is beneficial to increase the temperature of the low-temperature fluid and the high-temperature fluid in the buffer tube 3 after mixing, and further reduce the thermal shock generated when the fluid discharged from the air outlet hole 33 and the high-temperature fluid are mixed.

On the basis of the above embodiment, the plurality of air inlet holes 32 are divided into a plurality of groups, and the plurality of air inlet holes 32 in each group define an air inlet line on the tapered surface, wherein the air inlet line is a generatrix of the tapered surface. The embodiment can enable high-temperature fluid to gradually enter the buffer tube 3 from the conical surface in the flowing process, thereby being beneficial to reducing the impact on the buffer tube 3 and reducing the disturbance of the high-temperature fluid.

Furthermore, the plurality of groups of air inlet lines are uniformly distributed around the circumference of the conical surface, so that high-temperature fluid can uniformly enter the buffer tube 3 from the air inlet end surface 31, and the buffer tube 3 is stressed uniformly at the air inlet end surface 31, which is favorable for improving the stability of the buffer tube 3.

As an alternative implementation, the outlet of the second duct 2 communicates with the wall of the buffer tube 3. As shown in fig. 4, this embodiment allows the high temperature fluid entering buffer tube 3 to be in vertical contact with the low temperature fluid entering buffer tube 3, facilitating uniform mixing of the high temperature fluid and the low temperature fluid.

In addition to the above embodiments, an arrow F in fig. 4 indicates a flow direction when the mixed fluid is discharged from the gas discharge hole 33. As shown in fig. 4, the vent hole 33 is opened on the wall of the buffer tube 3, and along the flow direction of the fluid in the first pipeline 1, the vent hole 33 is located downstream of the buffer tube 3, the temperature difference between the mixed fluid formed by mixing the high-temperature fluid and the low-temperature fluid after a certain stroke and the high-temperature fluid outside the buffer tube 3 is already significantly reduced, the fluid discharged from the buffer tube 3 enters the high-temperature fluid along the flow direction perpendicular to the high-temperature fluid and migrates together with the high-temperature fluid, and exchanges heat with the high-temperature fluid during migration, and the heat exchange process is stable.

On the basis of the above embodiment, the plurality of vent holes 33 are divided into a plurality of groups, and the vent holes 33 in each group are arranged uniformly along the circumferential direction of the buffer tube 3 to define vent lines. This embodiment can make the interior fluid of buffer tube 3 evenly discharge along buffer tube 3's circumference, can make buffer tube 3 less at the whole atress of circumference, is favorable to maintaining buffer tube 3's structural stability.

Further, the distance between any adjacent two of the exhaust lines gradually decreases in a direction away from the intake end face 31. This embodiment can gradually increase the distribution density of the vent holes 33, and gradually diffuse the fluid mixture fluid in the buffer tube 3 from a small amount to a large amount into the first pipe 1, thereby further buffering the temperature difference between the high temperature fluid and the mixture fluid.

Optionally, the central axis of the buffer tube 3 is coincident with the central axis of the first pipeline 1, so that the distance between the outer wall of the buffer tube 3 and the inner wall of the first pipeline 1 is equal everywhere, and the mixed fluid discharged from the local exhaust holes 33 is prevented from impacting the pipe wall of the first pipeline 1, which is beneficial to further reducing the impact on the first pipeline 1.

Here, the exhaust line refers to a linear structure formed by arranging the plurality of exhaust holes 33, and the intake line refers to a linear structure formed by arranging the plurality of intake holes 32.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A pipeline protection assembly, includes first pipeline and the second pipeline that is linked together, the temperature of the fluid in the first pipeline is higher than the temperature of the fluid in the second pipeline, its characterized in that still includes: a buffer tube;

the buffer tube is arranged in a sealing manner and is positioned in the first pipeline, the buffer tube extends in the same direction as the first pipeline, and a gap is reserved between the outer wall of the buffer tube and the inner wall of the first pipeline;

the gas outlet of the second pipeline is communicated with the buffer tube in a sealing mode, the buffer tube comprises an air inlet end face and a sealing end face which are arranged oppositely, the flowing direction of the fluid in the first pipeline is followed, the air inlet end face is located at the upstream of the sealing end face, an air inlet hole is formed in the air inlet end face, and at least one of the tube wall of the buffer tube and the sealing end face is provided with an exhaust hole.

2. The duct shield assembly of claim 1, wherein the inlet end surface is a tapered surface, a tip of the inlet end surface extending away from the sealing end surface.

3. The duct guard assembly of claim 2, wherein the number of air intake apertures is plural.

4. The pipe guard assembly of claim 3 wherein a plurality of said air inlet holes are evenly divided into a plurality of groups, the plurality of said air inlet holes in each group defining an air inlet line on said tapered surface, said air inlet line being a generatrix of said tapered surface.

5. The pipe guard assembly of claim 4, wherein the sets of air inlet lines are evenly distributed about a circumference of the tapered surface.

6. The tube protection assembly of claim 1, wherein the air outlet of the second tube communicates over the wall of the buffer tube.

7. The tube-protecting assembly of claim 6, wherein the vent opening is open in a wall of the buffer tube and is located downstream of the buffer tube in a direction of flow of the fluid within the first tube.

8. The tube protective assembly according to any one of claims 1-7, wherein the number of the vent holes is multiple, the plurality of vent holes are divided into multiple groups, and the plurality of vent holes in each group are arranged uniformly along the circumference of the buffer tube to define a vent line.

9. The duct guard assembly of claim 8, wherein a distance between any adjacent two of the vent lines decreases in a direction away from the inlet end face.

10. The tube-protecting assembly of claim 9, wherein the central axis of the buffer tube is disposed coincident with the central axis of the first tube.