CN217714570U - Drain pipe of buried steam pipeline - Google Patents

Abstract

The utility model provides a bury ground steam conduit's drain pipe, including hydrophobic working pipe and hydrophobic outer pillar, hydrophobic working pipe includes interconnect's knee and straight tube portion, hydrophobic outer pillar cover is established the outside of straight tube portion, knee passes steam conduit working pipe and steam conduit outer pillar in proper order, the port of knee with the lower part inner wall parallel and level of steam conduit working pipe, straight tube portion is located the lower part inner wall top of steam conduit outer pillar, the port of straight tube portion gos deep into the sump pit. Adopt the utility model discloses can prevent that steam conduit expend with heat and contract with cold deformation caused's pipeline and equipment damage, reduce the degree of depth of sump pit, practice thrift engineering cost.

Description

Drain pipe of buried steam pipeline

Technical Field

The utility model relates to a bury ground steam conduit technical field, more specifically, relate to a bury ground steam conduit's drain pipe.

Background

According to the application range of 1.0.2 standard of CJJ/T104-2014 technical Specification for urban heating direct-buried steam pipelines, the pipeline with the working pressure less than or equal to 2.5MPa and the temperature less than or equal to 350 ℃ can adopt a steel outer-protection direct-buried laying mode. The drainage of the direct-buried steam pipeline is different from that of the overhead pipeline, and has the characteristics of the direct-buried steam pipeline. The drainage type of the existing municipal engineering direct-buried steam pipeline adopts a drainage device, which is detailed in the installation drawing of the steam pipeline drainage inspection well on page 10 of 12YN6 thermal engineering in 12 series building standard design drawing set, the drainage device is directly welded with a steam pipeline working pipe and an outer protecting pipe, a drainage pipe is connected out of the drainage device and introduced into a water collecting well, in order to prevent water from being stored in the drainage pipe, the arrangement of the drainage pipe is provided with a slope according to the water flow direction, and the drainage pipe is connected out of the drainage device due to the fact that the connection point of the drainage device is arranged below the bottom of the outer protecting pipe of the steam pipeline, so that the water collecting well needs to be arranged deeper; on the other hand, because drainage device and steam conduit working pipe and outer pillar all are the welding form, can remove when the steam conduit working pipe expends with heat and contracts with cold, and the steam conduit outer pillar is static, if the steam conduit working pipe inflation volume of a water department is great, can destroy drainage device.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the utility model aims at providing a bury ground steam conduit's drain pipe can prevent steam conduit expend with heat and contract with cold deformation induced pipeline and equipment damage, reduces the degree of depth of sump pit, practices thrift engineering cost.

The utility model provides a pair of bury ground steam conduit's drain pipe, including hydrophobic working pipe and hydrophobic outer pillar, wherein, hydrophobic working pipe includes interconnect's knee and straight tube portion, hydrophobic outer pillar cover is established the outside of straight tube portion, knee passes steam conduit working pipe and steam conduit outer pillar in proper order, the port of knee with the lower part inner wall parallel and level of steam conduit working pipe, straight tube portion is located the lower part inner wall top of steam conduit outer pillar, the port of straight tube portion gos deep into the sump pit.

The bend angle of elbow portion is 90 degrees.

The outer protective pipe of the drainage is close to one end of the outer protective pipe of the steam pipeline, and is attached to and welded with the outer wall of the outer protective pipe of the steam pipeline.

The bent pipe part is welded with the steam pipeline working pipe.

And a gap between the port of the bent pipe part and the steam pipeline working pipe is welded and sealed.

The horizontal end of the bent pipe part penetrates through the outer protecting pipe of the steam pipeline.

The straight pipe part is inclined downwards.

The slope of the straight pipe is 0.5%.

From the above description can know, the utility model provides a bury ground steam conduit's drain pipe adopts the drain pipe directly to be connected the drainage with steam conduit, cancel original hydrophobic device, the high improvement of drain pipe, thereby the degree of depth of sump pit reduces, engineering cost has been practiced thrift, the drain pipe adopts the hydrophobic working pipe and overlaps at its outside hydrophobic outer pillar, the hydrophobic working pipe is connected with steam conduit working pipe, hydrophobic outer pillar and steam conduit outer pillar are connected, when steam conduit working pipe expend with heat and contract with cold and remove, the drain pipe working pipe can remove simultaneously with steam conduit working pipe, can not destroy drain pipe and steam conduit. The utility model protects the pipeline, reduces the equipment harm, has reduced the degree of depth of sump pit, has practiced thrift engineering cost, has improved work efficiency.

Drawings

Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings.

In the drawings:

FIG. 1 is a prior art steam line drainage manhole installation;

fig. 2 is a schematic structural view of a drain pipe of a buried steam pipeline according to an embodiment of the present invention;

the device comprises a drainage device 1, a steam pipeline 2, a drainage pipe 3, a water collecting well 4, a ground plane 5, a drainage working pipe 6, a drainage outer protective pipe 7, a bent pipe 8, a straight pipe 9, a steam pipeline working pipe 10, a steam pipeline outer protective pipe 11 and a heat insulation layer 12.

The same reference numbers in all figures indicate similar or corresponding features or functions.

Detailed Description

The present invention is capable of modifications and various embodiments, and specific embodiments are shown by way of example in the drawings and are described in detail herein. However, the present invention is not limited to the specific embodiments, and all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention are to be understood as being included.

Ordinal terms such as first, second, etc., are included to describe various constituent elements, but the constituent elements are not limited to the terms. The terms are only used to distinguish one constituent element from another constituent element. For example, the second component may be named as the first component, and similarly, the first component may also be named as the second component without departing from the scope of the present invention. The term and/or includes a combination of a plurality of associated recorded items or an item of a plurality of associated recorded items.

It should be understood that when a component is referred to as being "connected" or "in contact with" another component, it is not only directly connected or in contact with the other component, but also understood to include other components in between. Conversely, when a component is referred to as being "directly connected" or "directly contacting" another component, it is to be understood that no other component is present therebetween.

In the description of the embodiments, when it is described that a certain component is formed on "upper (upper) or lower (lower) (on under)" another component, the upper (upper) or lower (lower) (on under) includes two components directly contacting each other or at least one other component is disposed between the two components. When the expression "up" or "down" is used, the reference to a certain component may include not only an upper direction but also a lower direction.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless the context clearly dictates otherwise, expressions in the singular number include expressions in the plural number. In the present application, it should be understood that the terms "comprises" or "comprising," or the like, are used for specifying the presence of the features, numbers, steps, operations, elements, components, or combinations thereof described in the specification, and do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, including technical or scientific terms, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Terms defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a prior art steam line drainage manhole installation diagram; fig. 2 is a schematic structural view of a drain pipe of a buried steam pipeline according to an embodiment of the present invention;

as shown in fig. 1, the drain device 1 is directly welded to the working pipe and the outer protecting pipe of the steam pipeline 2, the drain pipe 3 is connected out of the drain device 1, a water collecting well 4 is introduced, in order to prevent water from being stored in the drain pipe 3, the slope is set according to the water flow direction when the drain pipe 3 is arranged, the connection point of the drain device 1 is below the bottom of the outer protecting pipe of the steam pipeline 2, and the drain pipe 3 is connected out of the drain device 1. The bottom of the sump well 4 is located deep from the ground level 5. The working pipe of the steam pipeline 2 can move when expanding with heat and contracting with cold, and the outer protecting pipe of the steam pipeline 2 is static, if the expansion amount of the working pipe of the steam pipeline 2 at the water outlet is larger, the drainage device 1 can be damaged.

As shown in fig. 2, the drain pipe of the buried steam pipeline provided by this embodiment can be used for the construction of the thermal underground steam pipeline in municipal engineering, and can also be used for the drainage of other underground pipelines. The general steam pipeline comprises a steam pipeline working pipe 10 and a steam pipeline outer protecting pipe 11 sleeved outside the steam pipeline working pipe 10, and an insulating layer 12 is arranged between the steam pipeline working pipe 10 and the steam pipeline outer protecting pipe 11. When the steam pipeline working pipe 10 expands with heat and contracts with cold, the steam pipeline working pipe 10 can expand with heat and contract with cold to move. The drain pipe of the buried steam pipeline is arranged at a position needing to be drained along the length direction of the steam pipeline.

The drain pipe generally comprises a drain working pipe 6 and a drain outer protection pipe 7, water flows to the water collecting well 4 through the interior of the drain working pipe 6, and the drain outer protection pipe 7 plays a role in protecting the drain working pipe 6. In this embodiment, the drain work pipe 6 includes an elbow pipe portion 8 and a straight pipe portion 9 connected to each other, a shape formed by the elbow pipe portion 8 and the straight pipe portion 9 is approximately a crutch shape, a port of the elbow pipe portion 8 is a water inlet end, and a port of the straight pipe portion 9 is a water outlet end. The bent pipe portion 8 sequentially penetrates through the steam pipeline working pipe 10 and the steam pipeline outer protecting pipe 11, the port of the bent pipe portion 8 is flush with the inner wall of the lower portion of the steam pipeline working pipe 10, water in the steam pipeline working pipe 10 conveniently enters the bent pipe portion 8, and the bent pipe portion 8 and the steam pipeline working pipe 10 are welded and fixed. The straight pipe part 9 is positioned above the inner wall of the lower part of the outer protecting pipe 11 of the steam pipeline, water flows to the straight pipe part 9 from the bent pipe part 8, the port of the straight pipe part 9 extends into the water collecting well 4, thus the leading-out point of the drain pipe from the steam pipeline is positioned above the bottom of the outer protecting pipe 11 of the steam pipeline, and the depth of the water collecting well 4 can be properly reduced.

In order to facilitate the flow of water from the bent pipe portion 8 to the straight pipe portion 9, the bending angle of the bent pipe portion 8 may be 90 degrees. The port of the vertical end of bent pipe portion 8 is located the inner wall of the lowermost part at steam pipeline working pipe 10 to with the welding of steam pipeline working pipe 10, bent pipe portion 8 passes heat preservation 12 between steam pipeline working pipe 10 and the steam pipeline outer casing 11, the port of the horizontal end of bent pipe portion 8 passes steam pipeline outer casing 11, straight pipe portion 9 is connected at the horizontal end of bent pipe portion 8. A space for the expansion movement of the heat-insulating layer 12 and the steam pipeline working pipe is reserved between the outer protecting pipe of the steam pipeline and the steam pipeline working pipe.

The outer hydrophobic protective pipe 7 is sleeved outside the straight pipe part 9, namely the outer hydrophobic protective pipe 6 is sleeved on the hydrophobic working pipe 6 outside the steam pipeline. The end, close to the outer protecting pipe 11 of the steam pipeline, of the outer hydrophobic protecting pipe 7 is attached to the outer wall of the outer protecting pipe 11 of the steam pipeline and is welded and fixed.

In order that water can not leak out when all the water enters the elbow part 8, the gap between the end of the elbow part 8 and the steam pipeline working pipe 10 is sealed by welding.

In order to make the water flow to the water collecting well 4 better, the straight pipe part 9 can be inclined properly, the port of the straight pipe part is slightly lower than the end of the straight pipe part 9 connected with the bent pipe part 8, the gradient of the straight pipe is 0.5%, the gradient cannot be too large, and the depth of the water collecting well 4 can be increased too much.

Adopt the drain pipe of burying ground steam conduit of this embodiment in the engineering, when steam conduit working pipe expend with heat and contract with cold and remove, drain working pipe removes along with steam conduit working pipe, can not destroy drain pipe and steam pipe, has prolonged the life of pipeline. The leading-out point of the drain pipe is arranged above the bottom of the outer protecting pipe of the steam pipeline, so that the depth of the water collecting well can be effectively reduced, and the construction cost is reduced.

A drain pipe for an underground steam pipeline according to the present invention is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the above-described drain pipe for a buried steam pipeline without departing from the scope of the invention. Therefore, the scope of the present invention should be determined by the content of the appended claims.

Claims (8)

1. The drain pipe of the buried steam pipeline is characterized by comprising a drain working pipe and a drain outer protecting pipe, wherein,

the hydrophobic working pipe comprises a bent pipe part and a straight pipe part which are mutually connected, the hydrophobic outer protective pipe is sleeved outside the straight pipe part,

the bent pipe part penetrates through the steam pipeline working pipe and the steam pipeline outer protecting pipe in sequence, the port of the bent pipe part is flush with the lower inner wall of the steam pipeline working pipe, the straight pipe part is located above the lower inner wall of the steam pipeline outer protecting pipe, and the port of the straight pipe part penetrates into the water collecting well.

2. A hydrophobic pipe for a buried steam pipeline according to claim 1, in which the bend angle of the bent pipe portion is 90 degrees.

3. A hydrophobic pipe for a buried steam pipeline according to claim 1 wherein the outer hydrophobic pipe is attached to and welded to the outer wall of the outer pipe of the steam pipeline at an end thereof adjacent to the outer pipe of the steam pipeline.

4. A drain pipe for an underground steam pipeline according to claim 1, wherein the bent pipe portion is welded to the steam pipeline working pipe.

5. A drain pipe for an underground steam pipeline according to claim 1, wherein a gap between the end of the bent pipe portion and the working pipe of the steam pipeline is sealed by welding.

6. A drain pipe for an underground steam pipeline according to claim 1, wherein the horizontal end of the bent pipe portion passes through the outer pipe of the steam pipeline.

7. A hydrophobic pipe for a buried steam pipeline according to claim 1 wherein the straight pipe portion is inclined downwardly.

8. A hydrophobic pipe for a buried steam pipeline according to claim 7, wherein the slope of the straight pipe is 0.5%.

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