CN203375077U - Fireless-tapping nitrogen injection device for natural gas pipeline mouth-touching operation - Google Patents
Fireless-tapping nitrogen injection device for natural gas pipeline mouth-touching operation Download PDFInfo
- Publication number
- CN203375077U CN203375077U CN201320416888.8U CN201320416888U CN203375077U CN 203375077 U CN203375077 U CN 203375077U CN 201320416888 U CN201320416888 U CN 201320416888U CN 203375077 U CN203375077 U CN 203375077U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- support
- natural gas
- touching
- arc piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a fireless-tapping nitrogen injection device for natural gas pipeline mouth-touching operation. The common method for natural gas pipeline mouth touching is that pipeline valves at the two ends are closed, emptying valves are opened for emptying, nitrogen exchange is carried out at one end, detection is carried out at the other end, and mouth-touching cutting operation is started after the former steps are qualified. In the method, inner leakage is prone to occurring, and safety is affected. Two U-shaped clamps are arranged on the lower portion of a pipeline, the straight rod ends of the upper portions of the U-shaped clamps are fixedly provided with a platform-type support, a sealing arc block is arranged between the support and the pipeline, and through holes are formed in the support and the sealing arc block. An anti-explosion bench drill is fixedly arranged on a protruding part of the edge of the support, and an inlet tapping drill arranged on the anti-explosion bench drill right faces the through holes in the support and the sealing arc block. According to the fireless-tapping nitrogen injection device, nitrogen is injected to the two ends through operation point holes, when pressure in the pipeline is lower than 200Pa, fireless tapping can be achieved within one to two minutes, and nitrogen injection connection is achieved within five minutes. Safety and efficiency are achieved, time and safety requirements of mouth touching operation are met, and operation risks are effectively lowered.
Description
Technical field
the utility model belongs to the natural gas transport technical field, is specifically related to a kind of perforate notes nitrogen device of not getting angry that touches mouthful operation for natural gas line.
Background technique
At present, natural gas line touches a mouthful way comparatively commonly used and is, closes the two-termial line valve, opens atmospheric valve emptying, an end nitrogen replacement, the other end detects, detect qualified after, start cutting and touch a mouthful operation.But due to long-term use, leak phenomenon in long-distance transport pipes circuit valve inevitable, and this class valve all is connected with band gas main line, can't changes.The drawback of single-ended notes nitrogen is that setting may be qualified, but due to the one or both ends valves leakage, Check point is difficult to qualified, can't meet for a long time the requirement of getting angry of touching mouthful operation, and the risk operation may cause the accident again.Simultaneously, the conventional nitrogen operation length that expends time in of annotating, personnel labor intensity is large, and the nitrogen cost is high.
Summary of the invention
The purpose of this utility model is to provide a kind of perforate of not getting angry of for natural gas line, touching mouthful operation that can effectively reduce the setting risk and annotates the nitrogen device, overcomes single-ended notes nitrogen and detects underproof drawback.
The technological scheme that the utility model adopts is:
A kind of perforate notes nitrogen device of not getting angry that touches mouthful operation for natural gas line is characterized in that:
Pipeline is equipped with two dismountable, as to be complementary with pipe diameter U-shaped cards next week, the straight-bar end on U-shaped card top is fixed with the support of mesa-shaped, support and pipeline enclosure are provided with the sealing arc piece at the bottom of the flat-top arc, on support and sealing arc piece, all offer up big and down small concentric step hole;
Described bracket edge arranges projection and is fixed with explosion-proof bench drill, and explosion-proof bench drill is equipped with inlet orifice Zuan，Qi center with support and seals the concentric step hole center superposition on the arc piece.
The up big and down small concentric step hole of offering on described sealing arc piece, its large diameter portion is provided with for coordinating the internal thread of hollow crossover sub screw thread, between hollow crossover sub and sealing arc piece, the ring packing pad is set.
Described sealing arc piece and pipeline enclosure are provided with the arc gasket seal.
The utlity model has following advantage:
1, position of opening is not subject to the impact of setting environment, traffic route etc., and setting is chosen flexibly; 2, this device adopts the combined clamp appts form, adopts in a large number section bar and standard piece, and with low cost, cost performance is high; 3, the electric bench drill punch operation is simple, and stability is high, time saving and energy saving; 4, the connection of this device adopts and is threaded, simple efficient, efficient and convenient; 5, trepanning device is selected the import cutter, has improved cutting speed and cutter life; 6, utilize cleverly the soft seal pad, pipeline and notes nitrogen pipeline form a closed system, have reduced the leakage of the on-the-spot rock gas that punches; 7, this device is easy to use, easy to learn, less demanding to operator's technical ability; 8, the perforate operation can be completely achieved and not get angry, quick, efficient, safe.
The utility model is by by the setting perforate, to two ends, annotating nitrogen, thereby the contiguous pipeline nitrogen replacement of assurance setting is fully qualified.When line pressure lower than 200pa below, meet the perforate condition after, can directly implement perforate, after perforate, can realize quick the connection with pipeline, thereby effectively control the leakage rate of on-the-spot rock gas in allowed band, guaranteed site operation personnel's personal safety, also greatly shortened and touched a mouthful operation needed time.
The accompanying drawing explanation
Fig. 1 is the utility model erection drawing.
Fig. 2 is the utility model drilling operation erection drawing.
In figure, the hollow crossover sub of 1-, the 2-support, 3-U type card, the 4-pipeline, 5-ring packing pad, 6-sealing arc piece, 7-arc gasket seal, the 8-inlet orifice is bored, the explosion-proof bench drill of 9-.
Embodiment
Below in conjunction with embodiment, the utility model is described in detail.
Gao Long-distance Transmission Pipeline is relocated while touching mouthful operation, be cut pipeline, generally can close pipeline two-termial line valve, opens atmospheric valve emptying, an end nitrogen replacement, the other end detects, detect qualified after, start cutting and touch a mouthful operation.Routine work generally need be replaced about 10-30 kilometer pipeline section and can be implemented cutting after qualified and touch mouth, both wastes time and energy, and has also increased time swap.
The utility model is changed traditional method of replacing, directly adopt in the perforate of the setting place of pipeline and annotate nitrogen, after guaranteeing that the nitrogen replacement of setting adjacent domain (approximately 5 kilometers pipe ranges) is qualified, directly at setting, carry out cutting operation, after implementing effective shutoff, implement to touch a mouthful operation.Related perforate is annotated nitrogen equipment and is annotated the nitrogen device for the perforate of not getting angry of touching mouthful operation for natural gas line, and concrete structure is described below:
At pipeline, two dismountable, as to be complementary with pipeline 4 calibers U-shaped cards 3 are installed 4 next weeks, the straight-bar end on U-shaped card 3 tops is fixed with the support 2 of mesa-shaped, 4, support 2 and pipeline are provided with the sealing arc piece 6 at the bottom of the flat-top arc, sealing arc piece 6 tops prop up support 2, and the arcuate shape of bottom and pipeline 4 adapt.All offer up big and down small concentric step hole on support 2 and sealing arc piece 6.Support 2 edges arrange projection and are fixed with explosion-proof bench drill 9, and explosion-proof bench drill 9 is equipped with inlet orifice and bores 8 ，Qi centers with support 2 and seal the concentric step hole center superposition on arc piece 6.Explosion-proof bench-drill bit adopts trepanning device.
The through hole of sealing arc piece 6 is up big and down small step type through hole, and its large diameter portion is provided with for coordinating the internal thread of hollow crossover sub 1 screw thread, between hollow crossover sub 1 and sealing arc piece 6, ring packing pad 5 is set. Sealing arc piece 6 and 4, pipeline are provided with arc gasket seal 7.
After pipeline meets the perforate condition, when line pressure is following lower than 200pa, fire-protection equipment puts in place, and area outlook completes, and in sealing arc piece 6 tapped holes, adds cooling liquid, starts drilling operation.The explosion-proof bench drill of turn-off after drilling operation completes, install and annotate the nitrogen pipeline section, starts to annotate nitrogen, carries out detection record work.After the nitrogen detection is qualified, cutting operation is carried out at the pipeline two ends simultaneously, and after pipeline section cuts open, two ends add the batching sphere sealing that scribbles seal gease, by accurate inflation pressure, guarantee sealing effect.
This device operation has following three steps:
Step 1: the preparatory work before punching, operator can choose setting flexibly, easily according to the geographical position of setting, operating environment etc., utilize the preparatory work before sufficient time and safe environment are done punching, support 2, the U-shaped card 3 of sealing arc piece 6 use are effectively fixed and adjusted explosion-proof bench drill position with pipeline 4, make the center of inlet orifice brill 8 and the center superposition of sealing arc piece 6 concentric step holes; Connect the nitrogen car simultaneously and annotate the nitrogen pipeline to punching place.
It is cited that content of the present utility model is not limited to embodiment, and the conversion of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model specification, be claim of the present utility model and contain.
Claims (3)
1. the nitrogen device is annotated in the perforate of not getting angry of for natural gas line, touching mouthful operation, it is characterized in that:
Pipeline (4) is equipped with two dismountable, as to be complementary with pipeline (4) caliber U-shaped cards (3) next week, the straight-bar end on U-shaped card (3) top is fixed with the support (2) of mesa-shaped, be provided with the sealing arc piece (6) at the bottom of the flat-top arc between support (2) and pipeline (4), on support (2) and sealing arc piece (6), all offer up big and down small concentric step hole;
Described support (2) edge arranges projection and is fixed with explosion-proof bench drill (9), and explosion-proof bench drill (9) is equipped with inlet orifice and bores (8) ，Qi center with support (2) and seal the concentric step hole center superposition on arc piece (6).
2. the nitrogen device is annotated in a kind of perforate of not getting angry of for natural gas line, touching mouthful operation according to claim 1, it is characterized in that:
The up big and down small concentric step hole of offering on described sealing arc piece (6), its large diameter portion is provided with for coordinating the internal thread of hollow crossover sub (1) screw thread, between hollow crossover sub (1) and sealing arc piece (6), ring packing pad (5) is set.
3. the nitrogen device is annotated in a kind of perforate of not getting angry of for natural gas line, touching mouthful operation according to claim 1 and 2, it is characterized in that:
Be provided with arc gasket seal (7) between described sealing arc piece (6) and pipeline (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416888.8U CN203375077U (en) | 2013-07-15 | 2013-07-15 | Fireless-tapping nitrogen injection device for natural gas pipeline mouth-touching operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416888.8U CN203375077U (en) | 2013-07-15 | 2013-07-15 | Fireless-tapping nitrogen injection device for natural gas pipeline mouth-touching operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203375077U true CN203375077U (en) | 2014-01-01 |
Family
ID=49837606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320416888.8U Expired - Fee Related CN203375077U (en) | 2013-07-15 | 2013-07-15 | Fireless-tapping nitrogen injection device for natural gas pipeline mouth-touching operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203375077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542978A (en) * | 2022-03-18 | 2022-05-27 | 西南石油大学 | Temporary treatment device and method for natural gas long-distance pipeline station under emergency working condition |
-
2013
- 2013-07-15 CN CN201320416888.8U patent/CN203375077U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542978A (en) * | 2022-03-18 | 2022-05-27 | 西南石油大学 | Temporary treatment device and method for natural gas long-distance pipeline station under emergency working condition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203669848U (en) | High-pressure chemical-agent filling skid-mounted equipment | |
| CN110067910B (en) | Natural gas pipeline maintenance and pipe replacement method | |
| CN201102129Y (en) | Argon-in tube protection energy conservation equipment | |
| CN201513720U (en) | Reliable antileak gas water sealing overflow device | |
| CN203375077U (en) | Fireless-tapping nitrogen injection device for natural gas pipeline mouth-touching operation | |
| CN102913272A (en) | Device and method for displacing methane gas with positive pressure air | |
| CN205291388U (en) | Large -scale aerogenerator blade leak protection gas priming by vacuum structure | |
| CN203395497U (en) | Saddle type bypass leakage-proof device capable of drilling in presence of gas | |
| CN204964103U (en) | A transition interface arrangement that is used for storage tank vacuum to detect and bleed | |
| CN203437689U (en) | Pipeline tapper | |
| CN202065607U (en) | Magnetic force combined type pipeline leaking stopper under pressure | |
| CN211951825U (en) | Pipeline connecting device presses in area | |
| CN203437690U (en) | Pipeline tapper | |
| CN2802238Y (en) | Electric melting saddle-shape three-way device for pipe | |
| CN207629245U (en) | Gas piping press and open holes tooling | |
| CN205978941U (en) | Novel high sealed PE saddle -type bypass pipe fitting | |
| CN205314955U (en) | Hole sealing device for improving gas extraction concentration | |
| CN203963503U (en) | High pressure helium recycle and reuse device in a kind of leak-testing | |
| CN202810836U (en) | Gas extraction hole tightness inspection device | |
| CN218598240U (en) | Gas hole sealing device with real-time monitoring function | |
| CN202215276U (en) | Device for gas replacement with positive pressure air | |
| CN204403780U (en) | A kind of LCNG gas-liquid separator | |
| CN203488142U (en) | Rapid assembly type slip-casting hole-sealing device | |
| CN211825231U (en) | Engine oil sampling device of engine | |
| CN203347740U (en) | Drilled hole sealing slurry returning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20150715 |
|
| EXPY | Termination of patent right or utility model |