CN101875050A - Salvaging method for pipeline tapping saddle plate - Google Patents
Salvaging method for pipeline tapping saddle plate Download PDFInfo
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- CN101875050A CN101875050A CN200910083131XA CN200910083131A CN101875050A CN 101875050 A CN101875050 A CN 101875050A CN 200910083131X A CN200910083131X A CN 200910083131XA CN 200910083131 A CN200910083131 A CN 200910083131A CN 101875050 A CN101875050 A CN 101875050A
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- pipeline
- saddle plate
- fishing device
- tapping
- salvaging
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Abstract
The invention discloses a salvaging method for a pipeline tapping saddle plate after the saddle plate falls into a pipeline during the tapping operation for the conveying pipeline and relates to the technical field of a pipeline system. The method comprises the following steps: determining operation parameters of the pipeline; determining the position and form of the saddle plate; and salvaging by using a salvaging device. The step of determining operation parameters of the pipeline determines parameters such as the aperture of the pipeline, pressure, size and weight of the saddle plate, medium in the pipeline and temperature. The step of determining the position and form of the saddle plate selects a detection method according to the operation parameters of the pipeline and judges the position of the saddle plate by using a hole plugging device and an image pickup detection method for clean and transparent medium, and judges the position by using an X ray or ultrasonic detection method for non-transparent medium. The step of salvaging by using a salving device performs salvage by using the hole plugging device and the salvaging device according to the detection result. The invention realizes operation without plugging or stopping transmitting/emptying the pipeline and ensures low cost and low risk.
Description
Technical field
The present invention is a kind of Refloatation method that falls into the pipeline tapping saddle plate behind the pipeline at the saddle plate that produces in the feed-line perforate operation process.Pipe-line system technical field concerning foreign affairs.
Background technology
In the perforate operation process of pipeline, perforate tube cutter cutting perforate meeting produces a saddle plate, although design has the device that prevents that saddle plate from dropping on tube cutter centre drill, but still exist the risk that saddle plate is fallen into the operation pipeline under some extreme conditions, and this situation also appearred in practical project, if this saddle plate is fallen in the operation pipeline, bring great trouble will for follow-up pipeline pigging and interior the detection.
At present, the method for salvaging at the pipeline saddle plate has two kinds.A kind of is the stopping transportation blow-down pipe, manually takes out saddle plate by the workmen, and this method will be brought enormous economic loss to the owner, brings great inconvenience to the client; The another kind of online plugging technology that adopts, saddle plate is manually taken out by the workmen in the emptying block section, and this method is for the high-pressure large-caliber pipeline, construction cost and very risky.
Summary of the invention
The objective of the invention is to invent the Refloatation method of a kind of not shutoff or the operation of stopping transportation blow-down pipe, cost is low, risk is little pipeline tapping saddle plate.
Technical scheme of the present invention comprises two major parts: the saddle plate position sensing, adopt fishing device to salvage according to result of detection.Its method is: determine the pipeline operational factor; Determine the position and the form of saddle plate; Salvage with fishing device.
Concrete steps of the present invention are as shown in Figure 1:
1. medium, temperature parameter in the size of the bore that definite pipeline operational factor is definite operation pipeline, pressure, saddle plate and weight, the pipeline;
2. position and the form of determining saddle plate are to choose detection method according to the pipeline operational factor, and carry out the judgement of saddle plate position; For clean transparent media such as natural gases, utilize perforate shutoff equipment to adopt digital data transmission shooting detection method to carry out the saddle plate location determination, then adopt X ray or ultrasonic listening to judge the position to the opaque medium of former wet goods;
3. according to the result who detects, utilize perforate shutoff equipment and fishing device to salvage.
Wherein:
The shooting detection method is to need high light shot-light device that the shooting light source is provided, and after the camera head group dropped to assigned address with main shaft, camera head was taken situation in the pipeline, judged the offset distance discrete state of saddle plate;
X ray or ultrasonic listening are to survey outside in-service pipeline, according to the offset distance of data judging saddle plate;
Salvaging is to adopt the magnet fishing device, this fishing device is installed on tapping machine or the plugging device main shaft, decline along with tapping machine or plugging device main shaft, the magnet of fishing device slowly descends up to adsorbing saddle plate, fishing device is by the adjustment of two frees degree, the position that makes magnet is over against the saddle plate center, begin to promote main shaft afterwards, saddle plate is raised, the gravity of saddle plate will make fishing device return to the straight line state, this moment, saddle plate was withdrawn into the perforate center again, enabled smooth proposition.
Adopt this method, can be when perforate operation generation saddle plate falls into pipeline, perforate shutoff equipment when utilizing operation, additional probe and fishing device promptly can be finished the salvage of saddle plate, avoid adopting means such as stopping transportation blow-down pipe and online plugging technology, effectively reduce loss and risk.
Description of drawings
The Refloatation method flow chart of Fig. 1 pipeline tapping saddle plate
The specific embodiment
Embodiment. with the 1016mm natural gas line is example, and the operational factor of pipeline is: perforate saddle plate external diameter 889mm, heavy 215Kg, line pressure 6.0MPa, 20 ℃ of temperature.
At first need to survey the position of saddle plate, this example is transparent gas medium, so the method that adopts shooting to survey.Utilize in the pipeline high pressure of 6.4MPa and spy upon the survey device, it is installed on 2400 type tapping machines or 1016 plugging devices, 1016 sandwich valves are installed in 1016 perforate threeways of pipeline, 2400 type tapping machines that sniffer is housed or 1016 plugging devices are installed on the 1016 sandwich valves; Downforce on the balance valve core is opened 1016 sandwich valves afterwards, operates 2400 type tapping machines or 1016 plugging devices, makes its main shaft descending, so that sniffer photographs the position and the form of saddle plate in the pipeline.
According to the data that detect, utilize the magnet fishing device, employing is of a size of 350mm * 150mm * 100mm, magnetic intensity is the magnet of 5576Gs, and it is installed on 2400 type tapping machines or 1016 plugging devices; 1016 sandwich valves are installed in 1016 perforate threeways of pipeline, 2400 type tapping machines that fishing device is housed or 1016 plugging devices are installed on the 1016 sandwich valves; Downforce on the balance valve core is opened 1016 sandwich valves afterwards, operates 2400 type tapping machines or 1016 plugging devices, make its main shaft descending, so that the magnet fishing device is adsorbed onto the middle position of saddle plate in the pipeline, promote main shaft afterwards, saddle plate is salvaged the operation pipeline.
This example proves that through salvaging test this method does not need shutoff or stopping transportation blow-down pipe, can salvage saddle plate safely and reliably, has effectively reduced loss, and cost is low.
Claims (7)
1. the Refloatation method of a pipeline tapping saddle plate is characterized in that it is followed successively by definite pipeline operational factor; Determine the position and the form of saddle plate; Salvage with fishing device.
2. the Refloatation method of a kind of pipeline tapping saddle plate according to claim 1 is characterized in that described definite pipeline operational factor is: medium, temperature parameter in the size of the bore of definite operation pipeline, pressure, saddle plate and weight, the pipeline.
3. the Refloatation method of a kind of pipeline tapping saddle plate according to claim 1, the position and the form that it is characterized in that described definite saddle plate are: choose detection method according to the pipeline operational factor, for clean transparent medium, utilize perforate shutoff equipment to adopt the shooting detection method to carry out the saddle plate location determination; Then adopt X ray or ultrasonic listening to judge the position for opaque medium.
4. the Refloatation method of a kind of pipeline tapping saddle plate according to claim 1 is characterized in that described the salvaging with fishing device is the result that basis detects, and utilizes perforate shutoff equipment and fishing device to salvage.
5. the Refloatation method of a kind of pipeline tapping saddle plate according to claim 3, it is characterized in that described shooting detection method is to need high light shot-light device that the shooting light source is provided, after the camera head group drops to assigned address with main shaft, camera head is taken situation in the pipeline, judges the offset distance discrete state of saddle plate.
6. the Refloatation method of a kind of pipeline tapping saddle plate according to claim 3 is characterized in that described X ray or ultrasonic listening are to survey, according to the offset distance of data judging saddle plate outside in-service pipeline.
7. according to the Refloatation method of claim 1 or 4 described a kind of pipeline tapping saddle plates, it is characterized in that described salvaging is to adopt the magnet fishing device, this fishing device is installed on tapping machine or the plugging device main shaft, decline along with tapping machine or plugging device main shaft, the magnet of fishing device slowly descends up to adsorbing saddle plate, fishing device is by the adjustment of two frees degree, the position that makes magnet is over against the saddle plate center, begin to promote main shaft afterwards, saddle plate is raised, the gravity of saddle plate will make fishing device return to the straight line state, and saddle plate is withdrawn into the perforate center again, enables smooth proposition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910083131XA CN101875050A (en) | 2009-04-30 | 2009-04-30 | Salvaging method for pipeline tapping saddle plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910083131XA CN101875050A (en) | 2009-04-30 | 2009-04-30 | Salvaging method for pipeline tapping saddle plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101875050A true CN101875050A (en) | 2010-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN200910083131XA Pending CN101875050A (en) | 2009-04-30 | 2009-04-30 | Salvaging method for pipeline tapping saddle plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114433908A (en) * | 2022-03-03 | 2022-05-06 | 锐驰高科股份有限公司 | Pressure fishing device for pipeline perforated falling piece |
-
2009
- 2009-04-30 CN CN200910083131XA patent/CN101875050A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114433908A (en) * | 2022-03-03 | 2022-05-06 | 锐驰高科股份有限公司 | Pressure fishing device for pipeline perforated falling piece |
| CN114433908B (en) * | 2022-03-03 | 2024-04-26 | 锐驰高科股份有限公司 | Under-pressure salvaging device for pipeline perforating and falling sheet |
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Open date: 20101103 |