Pipeline Pig Signaller！
Design Temperature:
-4℉ ~ 302℉ (-20℃ ~ 150℃)
-15℉ ~ 400℉ (-26℃ ~ 204℃)Easy to use and cheap:
EMT Pipeline Pig Signaller is simple to use, you can search “EMT Retrieval Tool” on YouTube. And then we can see how we replaced the corrosion coupon within 12 minutes.
Pipeline Pig Signaller
But in order to solve the problems of the ball indicator. For example, it is difficult to maintain and replace, the shutdown cost is high, and the safety risk is high. Now, the ball indicator is analyzed and studied by professionals. We have developed a ball indicator that can be disassembled under pressure. This tool can be used when the long-distance pipeline is under pressure. It can maintain and replace the ball indicator movement. The practical application shows that the tool can reduce the abnormal shutdown time of long-distance pipelines. So if you have any other questions about Pipeline Pig Signaller, please contact our professionals to answer them for you.
Advantage:
Its operation is simple, safe, and reliable. This can reduce enterprise maintenance costs. Therefore, it also has broad application prospects. Ball indicators are often used in the descaling of long-distance pipelines. At present, most of the long-distance pipelines are mechanical ball indicators. For example, most ball indicators used by SINOPEC are explosion-proof mechanical ball indicators. This kind of indicator has the advantages of a simple structure, explosion-proof, intuitive, and reliable indication. And it can be mechanically positioned on the pipeline. At this time, it can regularly transmit the passage of pig objects in the pipeline. This can also guide the switching of the flow.
After the ball indicator is used for a long time, the equipment will be corroded and aged to different degrees. So it must be maintained and replaced. Because we usually install the ball passing indicator on the inlet and outlet pipelines and the receiver and launcher of the oil station. Therefore, the operators maintain and replace the ball indicator. This can only be carried out after the pipeline is shut down and vented. Moreover, some oil stations are affected by terrain. After shutdown, the venting operation takes a long time and is difficult. It is very difficult to maintain and replace the ball indicator. Moreover, the pipeline shutdown cost is high and the safety risk is large.
We solve the problem of maintenance and replacement of ball indicators. EMT analyzed this type of equipment in detail. We have developed a practical disassembly tool with pressure. So it can directly maintain and replace the ball indicator under pressure.
Question raising
The pipeline staff mainly installs the ball indicator above the incoming and outgoing pipelines. It has been outdoors for a long time. It is easy to cause malfunction of the indicator movement due to corrosion or other factors. The internal movement of the ball indicator is severely corroded. And the aging of the internal O-ring is unknown. Moreover, the O-ring inside the movement is aging and has leakage marks. It is difficult to replace a new movement. When there is no special tool for disassembly and assembly under pressure. We must shut down and empty the pipeline. Then we can remove and reinstall the ball indicator movement.
Through field research and analysis. At present, most ball indicators of long-distance pipelines have similar structures. It mainly includes trigger, base, movement, increasing stud tappet, upper connector, and other components. Wherein, the base is made of forging with good welding performance with the pipeline. The upper and outer sides are DN50 mm pipe threads. The movement is a sealed transmission assembly. Which is threadedly connected with the base. Sealing is mainly completed by O-ring. The upper connector is the protective cap of the motion mechanism and is connected to the clock control head. During maintenance and replacement.
The operator must remove the upper connector of the ball indicator and the extension stud tappet and other components. And then the upper part of the movement is exposed. Then it is disassembled and assembled with a special wrench for the movement. Through the analysis of the structure of the upper part of the movement and the characteristics of the special spanner used. There are 4 screw holes and grooves on the movement. Therefore, it is possible to design a tool that can be effectively connected with the movement and can be disassembled under pressure.
Development of pressure disassembly tool for Pipeline Pig Signaller
There are 9 parts in the disassembly and assembly tool of the ball indicator. It mainly includes an organic core connector, long-axis smooth rod, ball valve, and reducing connecting pipe. There are also sealing cylinders, pressure gauge joint, and sealing glands. As well as feeding devices (feeding threaded pipes, feeding sleeves), casing heads, etc. The connecting head of the movement is connected with the long-axis smooth rod through a square head and one screw. The DN65 mm ball valve is connected with the reducing pipe and the sealing cylinder through threads. The pressure gauge joint is welded on the sealing cylinder.
The upper part of the sealing cylinder is a sealing part. The feeding device is composed of two parts. The feed screw pipe is directly connected to the sealing cylinder. The feed sleeve is connected to the feed screw pipe. Which are combined to form a device that can be fed. Then the sleeve head is connected with the feeding sleeve and the upper part of the long-axis smooth rod. And there is an O-ring in the sleeve head as the shaft seal. This can prevent the entry of external moisture, impurities, etc. This will cause corrosion inside the tool.
Operation method
The disassembly and assembly of the ball indicator mainly include the following 10 steps:
Firstly, use an Allen wrench to connect the movement connector to the movement.
Then, connect the reducing pipe with the ball indicator base. This is because the raw tape can be wound around the thread to enhance the sealing property.
Slowly rotate the long-axis polished rod counterclockwise. Observe the pressure gauge value. When the value of the pressure gauge changes, stop rotating the long-axis smooth rod. After the pressure and the pressure in the pipeline are balanced and stabilized. Continue to rotate the long-axis polished rod counterclockwise without abnormal conditions. Then we unscrew the movement from the base.
Rotate the feed device counterclockwise. Then, we completely retract the movement into the sealed cylinder.
