CN205824472U - Structural gas channel - Google Patents
Structural gas channel Download PDFInfo
- Publication number
- CN205824472U CN205824472U CN201620802665.9U CN201620802665U CN205824472U CN 205824472 U CN205824472 U CN 205824472U CN 201620802665 U CN201620802665 U CN 201620802665U CN 205824472 U CN205824472 U CN 205824472U
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- Prior art keywords
- hubbed flange
- cleaning pipe
- gas channel
- pipe
- utility
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Abstract
The utility model discloses the structural gas channel of a kind of improvement, interior cleaning pipe including the front-end pipelines being arranged on below ground, described cleaning pipe top is provided with suspension hook, it is connected to hang the steel wire rope of cleaning pipe on described suspension hook, elevate above the soil in described front-end pipelines top and upper end connects with the first hubbed flange, described first hubbed flange and the second hubbed flange connect, described second hubbed flange upper end is connected with bend pipe one end by a straight pipeline, and the described bend pipe other end is connected with welding valve by a straight pipeline.Simple in construction of the present utility model, easy to operate, the residual air leakage caused because upstream valve is not closed completely can be blocked, meet the condition of fire operation.Having had second to ensure in work progress, reduced the generation of fire operation risk accident, safety coefficient is greatly promoted.
Description
Technical field
This utility model relates to natural gas line technical field, particularly relates to the structural gas channel of a kind of improvement.
Background technology
Station, high pressure voltage regulating station and high pressure valve chamber in Natural gas pipeline system needs that facility is carried out routine and patrols and examines
Safeguard.Common maintenance content mainly has the integrity inspection of valve outward appearance, flange, bolt, valve switch motility, leakage inspection
Look into, pressure regulator major-minor road switching etc..Can find to reveal at valve flanges in maintenance process, valve cannot completely close, internal hemorrhage due to trauma
Etc. situation, need built valve is replaced.Conventional construction scheme is: cut off pipeline upstream and downstream, uses nitrogen to pipe
After using gas analyser the most qualified after residual air is sufficiently displaced from road, valve is replaced.Using such construction
In scheme, pipeline is sufficiently displaced from being to ensure that the necessary condition of fire operation safety.
But finding in construction at the scene, it is not tight often to there is valve closing in Steel Tube Special upstream and downstream valve, valves leakage
Situation, there is a small amount of residual air in the duct, it is impossible to ensure pipeline is sufficiently displaced from, meet the condition of hot work.
Utility model content
Because the drawbacks described above of prior art, technical problem to be solved in the utility model is to provide a kind of improvement
Structural gas channel, to solve the deficiencies in the prior art.
For achieving the above object, this utility model provides the structural gas channel of a kind of improvement, including being arranged on ground
The interior cleaning pipe of the front-end pipelines below face, described cleaning pipe top is provided with suspension hook, described suspension hook is connected to hang
The steel wire rope of cleaning pipe, elevate above the soil in described front-end pipelines top and upper end connects with the first hubbed flange, described first hub
Flange and the second hubbed flange connect, and described second hubbed flange upper end is connected with bend pipe one end by a straight pipeline, described curved
The pipe other end is connected with welding valve by a straight pipeline.
The structural gas channel of above-mentioned a kind of improvement, described first hubbed flange and the second hubbed flange are at whole pipe
It is additionally provided with blind plate between road ventilation the former two.
The structural gas channel of above-mentioned a kind of improvement, described cleaning pipe, the first hubbed flange, the second hubbed flange,
Bend pipe, welding valve all use DN300 steel to make.
The beneficial effects of the utility model are:
Structure of the present utility model and construction method simple in construction, easy to operate, can block because upstream valve closes
Close the residual air leakage the most sternly caused, meet the condition of fire operation.Work progress has second ensure, reduced in fire operation
The generation of risk accidents, safety coefficient is greatly promoted.
Below with reference to accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is made furtherly
Bright, to be fully understood from the purpose of this utility model, feature and effect.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Detailed description of the invention
As it is shown in figure 1, the structural gas channel of a kind of improvement, including front-end pipelines interior being arranged on below ground
Cleaning pipe 1, described cleaning pipe 1 top is provided with suspension hook 5, described suspension hook 5 is connected to hang the steel wire rope 2 of cleaning pipe 1, institute
State front-end pipelines top to elevate above the soil and upper end connects with the first hubbed flange 4, described first hubbed flange 4 and the second high cervical approach
Blue 3 connect, and described second hubbed flange 3 upper end is connected with bend pipe 6 one end by a straight pipeline, and described bend pipe 6 other end passes through
One straight pipeline is connected with welding valve 7.
In the present embodiment, described first hubbed flange 4 and the second hubbed flange 3 are gone back between whole pipeline ventilation the former two
It is provided with blind plate 8.
In the present embodiment, described cleaning pipe the 1, first hubbed flange the 4, second hubbed flange 3, bend pipe 6, welding valve 7
DN300 steel is all used to make.
The natural gas tube pipeline construction method of a kind of improvement of the present utility model, comprises the following steps:
S1, clog in the front-end pipelines of below ground DN300 cleaning pipe, cleaning pipe top be provided with suspension hook for hanging
Play cleaning pipe；
S2, weld the first hubbed flange in front-end pipelines upper end, and make film for weld, weld qualified after take out DN300
Wiper, if defective, reprocesses film making until qualified；
S3, the thin blind plate of DN300 steel is set on the first hubbed flange, blocks residual air；
S4, on the thin blind plate of DN300 steel, lay the second hubbed flange, switching direct piping successively, and by the second hub
Flange, switching direct piping weld；
S5, on switching direct piping, lay bend pipe, direct piping is welded with bend pipe one end, then at the bend pipe other end
Weld another direct piping；
S6, all welds of step S4, S5 are made film, reprocess if defective, until qualified；
S7, the extraction thin blind plate of DN300 steel, connect two panels hubbed flange and tighten, recovering ventilation.
This utility model adds use wiper in the front end of transformation pipeline and blocks in replacement process and cannot be sufficiently displaced from
Residual air, ensure the safety of fire operation.Before fire operation, lifting appliance is used to lift wiper to stopping the supple of gas or steam in pipeline,
Wiper is qualified through gas detecting after installing, and can come into effect fire operation, welds hubbed flange.
Such device or construction method:
1, the residual air leakage caused because upstream and downstream is not closed completely can be blocked, meet the condition of fire operation.
2, after can be as being sufficiently displaced from, in work progress, second ensures, reduces the generation of fire operation risk accident.
Preferred embodiment of the present utility model described in detail above.Should be appreciated that the ordinary skill people of this area
Member just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technology neck
In territory, technical staff passes through logical analysis, reasoning or limited reality on the basis of existing technology according to design of the present utility model
Test available technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (3)
1. a structural gas channel, it is characterised in that: include the interior cleaning pipe being arranged on the front-end pipelines of below ground
(1), described cleaning pipe (1) top is provided with suspension hook (5), described suspension hook (5) is connected to hang the steel wire rope of cleaning pipe (1)
(2), elevate above the soil in described front-end pipelines top and upper end connects with the first hubbed flange (4), described first hubbed flange (4) with
Second hubbed flange (3) connects, and described second hubbed flange (3) upper end is connected with bend pipe (6) one end by a straight pipeline, described
Bend pipe (6) other end is connected with welding valve (7) by a straight pipeline.
2. structural gas channel as claimed in claim 1, it is characterised in that: described first hubbed flange (4) is high with second
Cervical approach blue (3) is additionally provided with blind plate (8) between whole pipeline ventilation the former two.
3. structural gas channel as claimed in claim 1, it is characterised in that: described cleaning pipe (1), the first hubbed flange
(4), the second hubbed flange (3), bend pipe (6), welding valve (7) all use DN300 steel to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620802665.9U CN205824472U (en) | 2016-07-28 | 2016-07-28 | Structural gas channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620802665.9U CN205824472U (en) | 2016-07-28 | 2016-07-28 | Structural gas channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205824472U true CN205824472U (en) | 2016-12-21 |
Family
ID=57557270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620802665.9U Active CN205824472U (en) | 2016-07-28 | 2016-07-28 | Structural gas channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205824472U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090525A (en) * | 2016-07-28 | 2016-11-09 | 上海煤气第管线工程有限公司 | Structural gas channel and construction method thereof |
-
2016
- 2016-07-28 CN CN201620802665.9U patent/CN205824472U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090525A (en) * | 2016-07-28 | 2016-11-09 | 上海煤气第管线工程有限公司 | Structural gas channel and construction method thereof |
| CN106090525B (en) * | 2016-07-28 | 2017-12-08 | 上海煤气第一管线工程有限公司 | The construction method of structural gas channel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |