Removable Pig Signaller used in pipeline pigging operations are generally installed on the incoming and outgoing pipelines of long-distance pipelines. After long-term use, the ball indicator will have equipment corrosion and aging of the rubber seal ring of the movement. This will lead to different degrees of oil and gas leakage, indicator action failure, and other faults. The current solution is to shut down the pipeline. The operator will relieve and empty the oil and gas in the pipeline. And then repairing and replacing the indicator movement.
In order to solve the problems of difficult maintenance and replacement of Removable Pig Signaller. High shutdown cost, and high safety risk. By analyzing and studying the ball indicator, we have developed a pressure disassembly tool for the ball indicator. The tool can maintain and replace the ball indicator movement when the long-distance pipeline is under pressure. The practical application shows that the tool can reduce the abnormal shutdown time of long-distance pipelines. It is easy to operate, safe and reliable, and can reduce the maintenance cost of enterprises. Therefore, it has broad application prospects
- Design Pressure:
- Design Temperature:
-4℉ ~ 302℉ (-20℃ ~ 150℃)
-15℉ ~ 400℉ (-26℃ ~ 204℃)
- Easy to use and cheap:
EMT Removable Pig Signaller is simple to use, you can search “EMT Retrieval Tool” on YouTube. And we can see how we replaced the corrosion coupon within 12 minutes.
Features of Removable Pig Signaller:
- It is suitable for pipes above 2 “.
- For flange connection, the design pressure is from ANSI 150# to 2500#. The maximum design pressure of nozzle welding is up to 10000psi (69mpa).
- The working temperature range is -20 ℃ ~120 ℃, and special seals are used when the working temperature exceeds this range.
- The trigger mechanism does not use the dynamic seal. Which can prevent leakage and ensure trigger flexibility. (except for the low-cost nozzle connection pop-up ball passing indicator and digital display ball passing indicator).
- It is easy to install, requires little maintenance, and has strong durability (verified by ten years).
- The insertion depth can be customized according to customer needs.
Maximum Pipeline Size
Retriever – (mm)
Retriever and Service Valve – (mm)
Stroke Available – (mm)
Weights – (kgs)
Removable Pig Signaller is a piece of the necessary equipment in the long-distance pipeline ball descaling process. It can accurately show whether the pig has passed a predetermined place. And assist in the successful completion of pigging. At present, the ball indicators used at home and abroad can basically meet the requirements of pigging and cleaning. But their maintenance and repair are more troublesome. Most of them require pipeline pressure relief and shutdown, and the economic losses are immeasurable. Based on the above reasons, the company has also developed a ball indicator that can be disassembled under pressure without pipeline pressure relief and shutdown.
Its main parts are made of stainless steel, which is acid and alkali resistant and corrosion resistant. This ball indicator is in the form of mechanical contact. So its action is sensitive and reliable. It can position and regularly transmit the passage of pigging objects in the pipeline through the mechanical structure. It has many advantages, such as simple structure, explosion-proof, intuitive and reliable indication. And it can be disassembled under pressure. The instructions are helpful for you to install, use and properly maintain the ball indicator. Therefore, please read the instructions carefully before installing and using this indicator.
The Necessity of Pipeline Cleaning:
Pig refers to the equipment that can clean the pipeline. As we all know, the pipeline needs to be cleaned regularly in order to keep it unblocked. However, some people do not pay much attention to pigging. Pigging is usually remembered when serious problems occur. However, it is too late at this time, so we need to pay attention to pigging at ordinary times. This has many benefits. The necessity of using pigs is introduced in detail below.
The pipeline is currently an effective method to transport liquid or gas. But its efficiency depends on two basic requirements. One is to operate continuously. One is to obtain the required throughput with less investment and low operation cost. Most pipelines are designed and built according to this principle. However, in practical application, the capital and cost are generally higher than expected. This is especially true for some pipelines with large diameters and long-distance transportation. Therefore, if you want to reduce the required funds, you need to deal with the pipeline. For example, pigging with pigging equipment can meet the above two requirements.
The pig can maintain the integrity and efficiency of the pipeline, and also protect the assets and environment of the pipeline owner. The equipment can make the pipeline run continuously, and it can remove all substances that may damage the pipeline system. And it can also provide some useful information and data to enable decision-makers to make wise decisions. At the same time, it can also maintain efficient work efficiency. It can remove any foreign matters and debris in the pipeline. It can also remove solid and liquid deposits that may accumulate and restrict flow in time. This can also detect the physical conditions and operating conditions of the line.
The basic mechanism of ball passing includes a pig transmitter , pig receiver, pen stock. And also pig (also known as pig ball) installed at both ends of the pipeline. The outer diameter of the pig is slightly 3% to 5% higher than the inner diameter of the pipeline. After putting the pig into the launcher, inject compressed gas into the pipeline at the rear end of the pig and continue to inject compressed gas. When the gas pressure at the rear end of the pig exceeds the material pressure at the front end and there is a pressure difference between the front and rear. The pig moves along the pipeline under the action of pressure and sweeps the material into the tank.
A pig is a special tool driven by gas, liquid, or pipeline transmission medium, which is used to clean up the remaining products in the recovery pipeline. Together with the transmitter and receiver, as well as the magnetic sensor. It can also be equipped with other supporting accessories to complete various complex pipeline operation tasks. Pig is also called pig ball, or scraper ball, or “pig”. Wikipedia says: a pig in the pipeline industry (scraper ball) is a tool. Which is transmitted downward along the pipeline and is driven by the pressure of product flow in the pipeline itself. Pigs have two main purposes: physical isolation between different fluids flowing through the pipeline. The inside of the pipe is clean.
The Working Process of The Pig is As Follows:
Stage 1: Product transmission
Open the valves next to the receiving station and the transmitting station. At the beginning of product transfer, the pig is fixed in the station body by the stop rod in the launch station.
Stage 2: The pig is pushed into the product pipeline by compressed air.
Close the valve next to the launcher and the pig enters the production pipeline. The propulsion gas pushes the pig in the pipeline to the receiving station. To recover most of the products in the pipeline. The pig arrives at the terminal at the end of the journey. The propellant gas valve of the launch station is closed. Before the pig returns, close the valve next to the receiver. And opening the exhaust valve near the launch station.
Stage 3: Pig return
Propellant gas pushes the pig back to the launch station. Propellant gas is discharged through the exhaust valve. After the pig returns to the launching station, the stop rod returns to the standby position to keep the pig stably parked in the station.
-40 Deg.C ~ +120 Deg.C
2 inches ~ 60 inches
We use PLYWOOD CASE as packaging, it has the following advantages:
1. Light weight, clear lines, insulation, high strength, not easy to deformation.
2. No fumigation required.
We cooperate with many express companies. That could help you choose a courier company with cheaper freight.By Sea
Shenyang is close to Dalian Port, inland transportation costs almost nothing and takes short time.
Why Choose Us?
1. Many kinds of pig signaller with a different types to meet different requirements.
2. Samples will be offered to attest to the quality and our services.
3. The fastest feedback!
4. The fastest delivery time.
5.24 hours,7 days online.
If you have any other questions, please contact our professionals to answer them for you.