阅读说明：本技术 一种带缴式管道内检测器的牵拉回收方法 (Traction recovery method of in-pipeline detector with payment function ) 是由 高潮 张宁 于 2021-08-03 设计创作，主要内容包括：本发明涉及管道内检测器回收技术领域,且公开了一种带缴式管道内检测器的牵拉回收方法,包括以下步骤：对检测器的遗落位置进行定位；救援前的准备；制定科学的救援回收方案,发送救援清管器将遗落检测器推出；发送救援清管器将遗落检测器推出,若发生二次卡堵,则利用救援清管器的定位跟踪功能对堵塞位置进行精准定位。该带缴式管道内检测器的牵拉回收方法,通过沿线埋设的磁力盒对遗落的检测器进行定位,从而确定检测器脱落的相对位置,并根据相应区间的管道状态,评估存在的风险,按照分析原因、定位区间、制定方案以及实施救援等步骤,制定全面可行的救援方案,达到快速高效回收的效果,从而提高救援成功率和降低救援的风险。(The invention relates to the technical field of in-pipeline detector recovery, and discloses a traction recovery method of a belt payment type in-pipeline detector, which comprises the following steps: positioning the missing position of the detector; preparation before rescue; formulating a scientific rescue recovery scheme, and sending a rescue pipe cleaner to push out the residual detector; and sending a rescue pipe cleaner to push out the drop detector, and if secondary blockage occurs, accurately positioning the blockage position by using the positioning and tracking function of the rescue pipe cleaner. According to the pulling recovery method of the detector in the pipeline with the payment function, the magnetic box buried along the line is used for positioning the lost detector, so that the relative position of the detector falling off is determined, the existing risks are evaluated according to the state of the pipeline in the corresponding interval, a comprehensive and feasible rescue scheme is formulated according to the steps of analyzing reasons, positioning the interval, formulating the scheme, implementing rescue and the like, the effect of rapid and efficient recovery is achieved, and the success rate of rescue is improved and the risk of rescue is reduced.)

1. The pulling and recovering method of the detector in the pipeline with the payment function is characterized by comprising the following steps of:

1) locating the missing position of the detector:

firstly, recovering a marking box for positioning a detector to perform data comparison and analysis, and screening possible missing positions of equipment;

simultaneously checking the station, the valve chamber and the possible falling position by stepping on the line, and performing signal detection on the whole pipeline by using magnetic detection equipment to search lost equipment;

thirdly, by comparing the signals recorded by the marker box, the position of the marker box receiving obvious magnetic signal interference change is used as a reference drop position, and the drop point of the detector is conjectured by combining the comprehensive consideration of the actual situation;

checking the area of the reference landing position again by using a compass, a magnetic signal detector and a ground marker, and if a weak abnormal signal is found, preliminarily judging that the falling point of the detector is at the reference landing position;

2) preparation before rescue:

closely monitoring the operation condition and the pressure difference condition of the reference drop position pipeline to ensure that the pipeline does not have abnormal pressure difference change;

secondly, the upstream station is subjected to encryption pollution discharge, and methanol is injected into the pipeline, so that the risk of hydrate ice blockage formed in the pipeline is reduced;

thirdly, monitoring the falling point condition of the detector, and monitoring whether the falling detector is displaced and whether the falling part has large throttling;

3) formulating a scientific rescue recovery scheme:

firstly, a rescue pipe cleaner is sent to push out the lost detector, so that rapid recovery is realized;

and secondly, sending a rescue pipe cleaner to push out the lost detector, if secondary blockage occurs, accurately positioning the blocked position by using the positioning and tracking function of the rescue pipe cleaner, and taking out the straight plate pipe cleaner with the transmitter and the lost detector through pipe cutting to realize quick and accurate recovery.

2. The pulling and recycling method of the belt-type in-pipeline detector according to claim 1, wherein an online non-stop delivery scheme is preferentially adopted for rescue of the detector, a rescue pipe cleaner is sent out from a first station to push out a residual device, and an emergency air supply scheme and an emergency pipe replacement scheme are formulated simultaneously to ensure normal operation of the pipeline, because sufficient gaps exist between the detector and the pipeline, and the detector is disposed in place for emergency after the residual device is left out, and no throttling phenomenon occurs in the pipeline.

3. The pulling and recovering method of the pipe inner detector with the payment type according to claim 1, wherein the rescue pipe cleaner has good sealing performance and strong pushing capability, and can be smoothly pushed out after meeting with the detector, and meanwhile, the positioning and tracking function is provided, so that the rescue pipe cleaner can be accurately positioned under the condition of blockage or abnormity, and a basis is provided for implementation of rescue operation.

4. The pulling and recovering method of the belt-type in-pipeline detector as claimed in claim 1, wherein the main operation parameters of the operation speed of the rescue pipe cleaner are as follows:

in the formula: v is the speed of the rescue pipe cleaner, km/h; q is the gas transmission flow, km 3/d; p is the average pressure after pipe cleaning, MPa; s is the cross-sectional area of the inner diameter of the pipeline, m 2.

5. The pulling and recovering method with the payment type pipeline inner detector as claimed in claim 1, wherein the operation speed of the rescue pipe cleaner is controlled to be 2-3 m/s, the operation parameters of the rescue pipe cleaner are adjusted according to the operation pressure and the gas delivery volume of the pipeline before operation, the balance of gas inlet and outlet volume of the pipeline and the stable operation condition are ensured, and the stable upstream gas inlet volume is ensured after the pipe cleaner is sent out.

Technical Field

The invention relates to the technical field of recovery of in-pipeline detectors, in particular to a traction recovery method of a belt-type in-pipeline detector.

Background

The in-pipeline detector is a device for carrying out online nondestructive detection on an oil and gas pipeline, the in-pipeline detector runs in the pipeline by means of power of a conveying medium, the defect information of the pipeline is detected and positioned by using a modern detection method (magnetic flux leakage detection technology, ultrasonic detection technology or electromagnetic sound detection technology), the online detection on the pipeline is completed, however, in a long-distance natural gas pipeline, the in-pipeline detector is difficult to stably move, the moving speed of the in-pipeline detector needs to be reasonably controlled, the detection precision of the device is improved, the detector generally adopts a 'locomotive' mode, the former section is completely sealed and provides power, the latter section is not provided with a leather cup for sealing, and only the latter section is provided with a plurality of supporting wheels for reducing friction resistance.

When the in-pipeline detector operates in a pipeline, blocking or local fracture occurs at positions such as pipe wall deformation, elbows and climbing which bear large resistance, so that great potential safety hazards are caused to the operation of the pipeline, and rapid positioning and timely rescue recovery are required, so that the traction recovery method of the in-pipeline detector with the payment function is provided to solve the problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a traction recovery method of a belt-type in-pipeline detector, which has the advantages of convenience in rapid recovery and the like, and solves the problem that when the in-pipeline detector runs and works in a pipeline, blockage or local fracture occurs at positions bearing large resistance, such as pipe wall deformation, elbows, climbing and the like, and serious potential safety hazards are caused to the running of the pipeline.

(II) technical scheme

In order to achieve the purpose of facilitating quick recovery, the invention provides the following technical scheme: the pulling and recovering method of the detector in the pipeline with the payment function is characterized by comprising the following steps of:

1) locating the missing position of the detector:

firstly, recovering a marking box for positioning a detector to perform data comparison and analysis, and screening possible missing positions of equipment;

simultaneously checking the station, the valve chamber and the possible falling position by stepping on the line, and performing signal detection on the whole pipeline by using magnetic detection equipment to search lost equipment;

thirdly, by comparing the signals recorded by the marker box, the position of the marker box receiving obvious magnetic signal interference change is used as a reference drop position, and the drop point of the detector is conjectured by combining the comprehensive consideration of the actual situation;

checking the area of the reference landing position again by using a compass, a magnetic signal detector and a ground marker, and if a weak abnormal signal is found, preliminarily judging that the falling point of the detector is at the reference landing position;

2) preparation before rescue:

closely monitoring the operation condition and the pressure difference condition of the reference drop position pipeline to ensure that the pipeline does not have abnormal pressure difference change;

secondly, the upstream station is subjected to encryption pollution discharge, and methanol is injected into the pipeline, so that the risk of hydrate ice blockage formed in the pipeline is reduced;

thirdly, monitoring the falling point condition of the detector, and monitoring whether the falling detector is displaced and whether the falling part has large throttling;

3) formulating a scientific rescue recovery scheme:

firstly, a rescue pipe cleaner is sent to push out the lost detector, so that rapid recovery is realized;

and secondly, sending a rescue pipe cleaner to push out the lost detector, if secondary blockage occurs, accurately positioning the blocked position by using the positioning and tracking function of the rescue pipe cleaner, and taking out the straight plate pipe cleaner with the transmitter and the lost detector through pipe cutting to realize quick and accurate recovery.

Preferably, because there is sufficient gap between detector and pipeline, and take place to lose after the emergent processing of positioning, throttle phenomenon does not appear in the pipeline, so the preferential online incessant scheme that does not fail of adopting of rescue to the detector sends out the rescue dredging pipe ware from first station, will lose equipment to release, formulate emergent air feed scheme and emergent pipe replacement scheme simultaneously, ensure pipeline normal operating.

Preferably, the rescue pipe cleaner should have good sealing performance and strong pushing capacity, ensure that the rescue pipe cleaner can be smoothly pushed out after meeting with the detector, and meanwhile, have a positioning and tracking function, and can be accurately positioned under the condition of blockage or abnormity, so that a basis is provided for implementation of rescue operation.

Preferably, the main operating parameters of the operation speed of the rescue pig are:

in the formula: v is the speed of the rescue pipe cleaner, km/h; q is the gas transmission flow, km 3/d; p is the average pressure after pipe cleaning, MPa; s is the cross-sectional area of the inner diameter of the pipeline, m 2.

Preferably, the running speed of the rescue pipe cleaner is controlled to be 2-3 m/s, the running parameters of the rescue pipe cleaner are adjusted according to the running pressure and the gas delivery volume of the pipeline before operation, the balance of the gas inlet and outlet volume of the pipeline is ensured, the running working condition is stable, and the upstream gas input is ensured to be stable after the pipe cleaner is sent out.

(III) advantageous effects

Compared with the prior art, the invention provides a traction recovery method of a detector in a belt-type pipeline, which has the following beneficial effects:

1. according to the pulling recovery method of the detector in the pipeline with the payment function, the magnetic box buried along the line is used for positioning the lost detector, so that the relative position of the detector falling off is determined, the existing risks are evaluated according to the state of the pipeline in the corresponding interval, a comprehensive and feasible rescue scheme is formulated according to the steps of analyzing reasons, positioning the interval, formulating the scheme, implementing rescue and the like, the effect of rapid and efficient recovery is achieved, and the success rate of rescue is improved and the risk of rescue is reduced.

2. This area is paid type in pipeline tractive recovery method of detector will lose the detector through the foam pig that adopts the sending band tracker and release, if take place the secondary card stifled, then utilize the location tracking function of rescue pig to carry out accurate location to the jam position to through cutting the pipe with the straight board pig that has the transmitter with lose the detector and take out, realize the effect of quick accurate recovery, whole adoption receiver detected signal simultaneously provides the foundation for accurately judging the running state of rescue pig and the position of detector.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): a traction recovery method of a detector in a belt payment type pipeline comprises the following steps:

1) locating the missing position of the detector:

firstly, recovering a marking box for positioning a detector to perform data comparison and analysis, and screening possible missing positions of equipment;

simultaneously checking the station, the valve chamber and the possible falling position by stepping on the line, and performing signal detection on the whole pipeline by using magnetic detection equipment to search lost equipment;

thirdly, by comparing the signals recorded by the marker box, the position of the marker box receiving obvious magnetic signal interference change is used as a reference drop position, and the drop point of the detector is conjectured by combining the comprehensive consideration of the actual situation;

checking the area of the reference landing position again by using a compass, a magnetic signal detector and a ground marker, and if a weak abnormal signal is found, preliminarily judging that the falling point of the detector is at the reference landing position;

2) preparation before rescue:

closely monitoring the operation condition and the pressure difference condition of the reference drop position pipeline to ensure that the pipeline does not have abnormal pressure difference change;

secondly, the upstream station is subjected to encryption pollution discharge, and methanol is injected into the pipeline, so that the risk of hydrate ice blockage formed in the pipeline is reduced;

thirdly, monitoring the falling point condition of the detector, and monitoring whether the falling detector is displaced and whether the falling part has large throttling;

3) formulating a scientific rescue recovery scheme:

firstly, a rescue pipe cleaner is sent to push out the lost detector, so that rapid recovery is realized;

and secondly, sending a rescue pipe cleaner to push out the lost detector, if secondary blockage occurs, accurately positioning the blocked position by using the positioning and tracking function of the rescue pipe cleaner, and taking out the straight plate pipe cleaner with the transmitter and the lost detector through pipe cutting to realize quick and accurate recovery.

Because there is sufficient gap between detector and pipeline, and take place to lose after the emergent processing is in place, throttle phenomenon does not appear in the pipeline, so to the first online incessant scheme of adopting of rescue to the detector, send out the rescue pig from first station, release the equipment that loses, the emergent air feed scheme and the emergent tube replacement scheme of having formulated simultaneously, ensure the pipeline normal operating, for the running condition and the rescue result of accurate grasp pig, set up the monitoring point at pipeline along the key position (business turn over station, cross over, valve chamber, mountain situation fluctuation point etc.) to the reference when the location was investigated is lost the position and is encrypted and set up the monitoring equipment, and every monitoring equipment is equipped with monitoring personnel and pig tracker receiver, through artifical and the dual means of monitoring of instrument, ensure that the monitoring signal is accurate.

The rescue pipe cleaner has good sealing performance and strong pushing capacity, can be smoothly pushed out after meeting with the detector, has a positioning and tracking function, can be accurately positioned under the condition of blockage or abnormity, and provides a basis for rescue operation.

Main operating parameters of the rescue pig operating speed:

in the formula: v is the speed of the rescue pipe cleaner, km/h; q is the gas transmission flow, km 3/d; p is the average pressure after pipe cleaning, MPa; s is the cross-sectional area of the inner diameter of the pipeline, m 2.

The operation speed of the rescue pipe cleaner is controlled to be 2-3 m/s, the operation parameters of the rescue pipe cleaner are adjusted according to the operation pressure and the gas delivery volume of the pipeline before operation, the balance of gas inlet and outlet volume of the pipeline and the stability of the operation condition are ensured, and the stability of upstream gas input is ensured after the pipe cleaner is sent out.

The invention has the beneficial effects that: the lost detector is positioned by the magnetic box embedded along the line, thereby determining the relative falling position of the detector, evaluating the existing risk according to the state of the pipeline in the corresponding interval, according to the steps of analyzing reasons, positioning intervals, making a scheme, implementing rescue and the like, a comprehensive and feasible rescue scheme is made, the effect of fast and efficient recovery is achieved, thereby improving the success rate of rescue and reducing the risk of rescue, pushing out the drop detector by adopting a foam pipe cleaner with a tracker, if secondary blockage occurs, the blocking position is accurately positioned by utilizing the positioning and tracking function of the rescue pipe cleaner, and the straight plate pipe cleaner with the transmitter and the drop detector are taken out through pipe cutting, so that the effect of quick and accurate recovery is realized, meanwhile, a receiver is adopted to detect signals in the whole process, and a basis is provided for accurately judging the running state of the rescue pipe cleaner and the position of the detector.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.