KR102026817B1 - Residual liquid-reducing pigging system of manifold for liquid filling - Google Patents

Abstract

The present invention relates to a pigging system for reducing liquid remaining in a pipe after the filling of liquid such as oil in a manifold. The present invention has the following effects. In other words, a no-pig-trap type air injector is used on a manifold for the filling of liquid such as oil to significantly reduce liquid remaining in a pipe after filling, and a tiny amount of residual liquid is collected and reused. Moreover, since the filling of liquid and the treatment of residual liquid are performed at the same time to prevent liquid from remaining in a pipe after filling, there is no need to prepare a cleaning agent and a drain for filling work, so the system can be economical, and also, production efficiency can be increased with less time for waiting until the next filling process. Meanwhile, the system can be applied to a manifold comprising matrix valves to enable at least three lines to be filled at the same time.

Description

Residual liquid-reducing pigging system of manifold for liquid filling}

The present invention relates to a pigging system for reducing liquid remaining in a pipe after filling in a manifold for filling a liquid such as oil.

A plurality of inlets and a plurality of outlets are connected in a lattice form, and in the case of a manifold in which liquid is transferred through various paths by branch valves, liquid remains in the pipe after the liquid is transferred.

In detail, referring to FIG. 10, a plurality of pipes are vertically connected to a specific pipe in a straight path, and the liquid is branched into various paths. The liquid is filled in the pipe to inject liquid or air to push out the liquid. The pressure pushes part of the liquid into the branch pipe (A), which is pushed back into the pipe after the pig or air passes (B) to generate a slop oil. Done.

Such residual liquids eventually have insufficient filling amount compared to the supply amount, causing product defects, or inducing excessive supply to obtain a desired filling amount, which leads to waste of raw materials.

To solve this problem, the proposed method is to use a pig trap to fix the first pig, and then push the other pig further to push out the remaining liquid once more. As additional pigs are required, additional cost is needed to increase the cost of the equipment, to push out the remaining liquid after filling, and to recover the two pigs again.

Patent Registration No. 10-1740629 (2017.05.22.)

The problem to be solved in the present invention is as follows.

That is, the present invention proposes a pigging system that can drastically reduce residual liquid remaining in a pipe after filling in a manifold for filling a liquid such as oil.

The present invention to solve the above problems,

A manifold 400 connecting the supply part 10 and the filling part 20 so that the liquid is supplied to the supply part 10 including the plurality of inlet pipes and discharged to the filling part 20 including the plurality of discharge pipes; Between the supply unit 10 and the manifold 400 of the linear path connected to the supply unit 10 and on the opposite side of the filling unit 20 on the basis of the manifold 400 of the linear path connected to the filling unit 20. Pigment 100 is installed to receive the pig 60 to send the pig 60 back toward the manifold 400; The first in-line pig receiver installed between the plunger 100 and the manifold 400 in a straight path connected to the supply unit 10 and receiving and returning the pigs sent from the pigeon 100 in the path of the supply unit 10 ( 200); The second in-line pig, which is installed between the filling part 30 of the linear path connected to the filling part 20 and the manifold 400, receives and returns the pigs sent from the pigger 100 of the filling part 20 path. And a receiver 300, wherein the manifold 400 is installed at a portion where the path of the supply part 10 and the path of the filling part 20 cross each other to fill the liquid flowing in the path of the supply part 10. The matrix valve 410 is branched to the path of the supply (20) and the path of the supply unit 10 and the path of the filling unit 20 is formed to enable bi-directional pigging, the injector for injecting residual liquid by injecting air from one side of the flow path ( 440),

The injector 440 is installed between the manifold 400 and the second in-line pig receiver 300 in the path of the filling unit 20 to push the remaining liquid toward the filling unit 20, the pigment ( 100 includes a drain 150 for discharging the remaining liquid collected with the returning pig 60 out of the flow path in which the pigtailer 100 is installed, and the first in-line pig receiver 200 includes a manifold 400. It characterized in that it comprises an injector 250 for spraying the air toward the manifold 400 to push the remaining liquid toward,

The injector 440 of the manifold 400 and the injector 250 of the first inline pig receiver 200 are vortex injectors for injecting air in a vortex form for reducing residual liquid in a liquid filling manifold. Present a pigging system.

The present invention has the following effects.

In other words, by using a no pig trap type air injector in the manifold for filling liquids such as oil, the remaining liquid remaining in the pipe after filling can be drastically reduced, and the remaining amount of remaining liquid is recovered again. There is an advantage that can be reused.

In addition, since the liquid is filled and the remaining liquid is processed and no liquid remains in the pipe after filling, it is economical because no drainage and washing liquid are required during the filling operation, and it is economical and increases the production efficiency by reducing the waiting time until the next filling operation. Can be.

On the other hand, it is possible to simultaneously charge at least three lines by applying to a manifold composed of a matrix valve.

1 is a view of the configuration of the path from the small capacity mixing unit to the small capacity filling unit.
2 is a view of the configuration of the path from the large-capacity mixing unit to the large-capacity filling unit.
3 is a view of a configuration in which the paths of FIGS. 1 and 2 are mixed.
4 is an exemplary diagram of the overall configuration of the present invention.
5 is a diagram of a configuration of a pigger.
6 is a diagram of a configuration of a first inline pig receiver;
7 is a diagram of a configuration of a second inline pig receiver;
8 is an exemplary view of the configuration of the matrix valve, the on-off valve and the injector.
9 is an exemplary diagram of a configuration of a pig.
10 is a view showing a process in which residual liquid is generated.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. However, the scope of the present invention should be grasped by the claims. In addition, description of the well-known art which obscures the summary of this invention is abbreviate | omitted.

Piping system for reducing the residual liquid of the liquid filling manifold of the present invention is the supply unit 10, the filling unit 20, the pigtail 100, the first in-line pig receiver 200, the second in-line pig as shown in FIG. The receiver 300 and the manifold 400 are configured.

The manifold 400 is a portion connecting the supply unit 10 and the filling unit 20 such that the liquid is supplied to the supply unit 10 composed of a plurality of inlet tubes and discharged to the filling unit 20 composed of the plurality of discharge tubes. A plurality of inlet pipes of the supply unit 10 and a plurality of discharge pipes of the filling unit 20 are connected in a matrix to branch the path of the liquid, and the matrix valve 410, the compact valve 420, and the shutoff valve 430. ) And injector 440.

The matrix valve 410 is installed at a portion where the path of the supply part 10 and the path of the filling part 20 cross each other to branch the liquid flowing in the path of the supply part 10 into the path of the filling part 20. As such, the path of the supply unit 10 and the path of the filling unit 20 are both valves that are formed to enable bidirectional pigging (should be composed of a through-tube without obstacles to enable the transmission and reception of pigs). The valves presented in 1740629 may be applied. The supply unit 10 is composed of a small-capacity mixing unit 11 for mixing and supplying a small amount of liquid and a large-capacity mixing unit 12 for mixing and supplying a large amount of liquid, and the filling unit 20 receives liquid and receives a small capacity unit. When it consists of a small capacity filling unit 21 to be filled with a large capacity filling unit 22 is supplied with liquid and filled in a large capacity unit, the matrix valve on the path from the small capacity mixing unit 11 to the small capacity filling unit 21 410 is installed.

The compact valve 420 is installed at a portion where the path of the supply part 10 and the path of the filling part 20 cross each other, thereby branching the liquid flowing in the path of the supply part 10 into the path of the filling part 20 and filling the filling part. The valve is formed to enable bidirectional pigging in the path of 20. The compact valve 420 is installed on the path from the large capacity mixing unit 12 to the large capacity filling unit 22.

In the path where the small amount of liquid is transferred (from the small capacity mixing part 11 to the small capacity filling part 21), even a small amount of residual liquid increases relatively, so that both the path of the supply part 10 and the path of the filling part 20 are increased. Pigging should be possible, so the installation of the matrix valve 410, a relatively small loss in the residual liquid is generated in the path (large volume mixing section 12 to the large-capacity filling section 22) to transfer a large amount of liquid. Therefore, it is sufficient that only the path of the filling section 20 to be pigged and the remaining liquid on the path of the supply unit 10 is preferably configured to be recovered to the large-capacity mixing unit 12 again. However, of course, the matrix valve 410 can be applied even in a large capacity path as necessary.

The injector 440 serves to push the remaining liquid by injecting air from one side of the flow path, and is installed between the second inline pig receiver 300 and the manifold 400 in the path of the filling part 20. The residual liquid is pushed towards (20). As shown in Figure 8 it is preferable to install with an injector formed so as not to interfere on the moving path of the pig (60). Pigment 60 uses a bidirectional pig, as shown in FIG.

Referring to FIG. 10, in the case of the manifold to which the present invention is applied, a plurality of tubes are vertically connected to specific pipes in a straight path so that the liquid may branch into various paths. When the liquid is injected and pushed out, a part of the liquid is pushed into the branch pipe by the pushing pressure (A), and the portion pushed into the branch pipe is introduced into the pipe again after the pig or air passes (B) and the remaining liquid (slop oil) is generated.

In order to prevent such a problem, the injector 440 preferably uses a vortex injector. The vortex injector injects air in a vortex, rotating it, and the injected air moves quickly through the tube, forming a wall of air that pushes the residual liquid, causing the residual liquid to be pushed out without leaking into another branch connected to the tube. . Therefore, it is possible to prevent the generation of residual liquid due to the above phenomenon. In particular, in U-shaped pipes, residual liquid accumulates in the bent portion due to gravity. When the air is injected into the vortex with a vortex injector, residual liquid accumulated in the bent portion can be pushed out to the end of the pipe at a time so that almost no liquid remains in the pipe. Will not.

When the supply unit 10 is the small-capacity mixing unit 11, the injector 440 is opposite to the small-capacity mixing unit 11 based on the manifold 400 in the path of the supply unit 10 to which the small-capacity mixing unit 11 is coupled. Further, if the supply unit 10 is a large-capacity mixing unit 12, the flow path on the opposite side of the large-capacity mixing unit 12 relative to the manifold 400 of the supply unit 10 path to which the large-capacity mixing unit 12 is coupled Opening and closing valve 430 for opening and closing is installed. This is the same as the reason why the matrix valve 410 and the compact valve 420 is selectively installed in the small-capacity path and the large-capacity path. In the small-capacity path, the injector 440 acts as a pig and can be neatly pushed out without residual liquid. In the large-capacity path, when the compact valve 420 is installed, the piglet cannot be applied in the path of the supply unit 10, so that the remaining liquid in the path of the supply unit 10 flows as it is by opening and closing the valve 430. It is configured to recover. On-off valve 430 is applicable to the general ball valve.

The pigtail 100 is filled between the supply part 10 and the manifold 400 in a straight path connected to the supply part 10 and the filling part based on the manifold 400 in a straight path connected to the filling part 20. It is installed on the opposite side of the 20 to send the pig 60 toward the manifold 400, and serves to receive the pig 60 to return, as shown in Fig. 5, the detector 110, the compact valve 120, the pig It is composed of an injector 130, a pressure sensor 140, a drain 150, a pig signal 160 (not shown).

The pig detector 110 detects the existence of the pig 60, and the compact valve 120 serves to open and close the flow path in which the pigtail 100 is installed and is configured to be the same as the on / off valve 430 of FIG. Can be.

Pig injector 130 is composed of an air injector for injecting air to send the pig 60, the pressure sensor 140 is to detect the pressure of the flow path in which the Pigmenter 100 is installed.

The drain 150 serves to discharge the remaining liquid collected with the returning pig 60 out of the flow path in which the pigtailer 100 is installed, and the pipe connected to the drain 150 is supplied to the supply part 10, in particular, the small-capacity mixing part. (11), the remaining liquid on the path of the supply section 10 is recovered to the small volume mixing section (11). In addition, the residual liquid discharged from the drain 150 of the pigeon 100 installed on the path of the filling unit 20 may be configured to be collected by a separate residue collecting unit 30.

Pig signaler 160 serves to inform the outside of the operating state of the pig (60).

It is preferable that the injector 130, the drain 150, the pig detector 110, and the compact valve 120 are configured in this order based on the moving direction of the liquid.

The first in-line pig receiver 200 is installed between the plunger 100 and the manifold 400 in a straight path connected to the supply unit 10 to send the pigs sent from the pigger 100 in the path of the supply unit 10. It serves to receive and return, it is composed of a pig detector 210, a compact valve 220, a pig injector 230, a pig stopper 240, an injector 250 as shown in FIG.

Pig detector 210 detects the presence of the pig 60, the compact valve 220 serves to open and close the flow path in which the first in-line pig receiver 200 is installed and the same as the on-off valve 430 of FIG. Can be configured.

The pig injector 230 is composed of an air injector for injecting air to return the pig 60, and the pig stopper 240 detects the pig 60, which is transferred from the pig launcher 100, in the pig detector 210. When it serves to stop the pig (60).

The injector 250 serves to inject air toward the manifold 400, and is preferably configured as a vortex injector in the same manner as the injector 440 of the manifold 400.

The liquid detector 210, the pig stopper 240, the pig injector 230, the compact valve 220, and the injector 250 may be configured in the order of the liquid direction.

The second in-line pig receiver 300 is installed between the filling part 30 of the linear path connected to the filling part 20 and the manifold 400 to be sent from the pigger 100 of the filling part 20 path. It serves to receive and return the pig, it is composed of a pig detector 310, a compact valve 320, a pig injector 330, a pig stopper 340 as shown in FIG. Since the injector 250 is excluded from the first in-line pig receiver 200, the rest of the in-line pig receiver 200 is the same as the configuration of the first in-line pig receiver 200 and will not be described.

The remaining liquid collected by the pig 60 sent from the first in-line pig receiver 200 is recovered to the small-capacity mixing unit 11 via the pig plunger 100 and the pig (sent) sent from the second in-line pig receiver 300. The remaining liquid collected by 60 is recovered to the residue collecting unit 30 via the pigtail 100, and the remaining liquid on the straight path connected to the large-capacity mixing unit 12 is the compact valve 420 and the opening / closing valve. Through 430 is recovered to the large capacity mixing unit 12.

The operation process is described in more detail as follows.

1. For small volume filling (see Figure 1)

1-1. When the liquid supplied from the small-capacity mixing unit 11 is transferred to the small-capacity filling unit 21 and filled, first, the compact valve 120 of the pigtail 100 and the compact valve 220 of the first inline pig receiver 200 are filled. ), The paths are opened by opening the compact valves 320 of the second in-line pig receiver 300, respectively, and branched to the small-capacity filling unit 21 using the matrix valve 410 of the manifold 400 (p11). -p12-p22-p23).

1-2. When an open path is formed from the small capacity mixing part 11 to the small capacity filling part 21, the mixed liquid is supplied from the small capacity mixing part 11. The supplied liquid is filled into the small capacity filling unit 21 via a path (p11-p12-p22-p23) branched to the small capacity filling unit 21. At this time, the pig 60 is sent to the first inline pig receiver 200 using the pig injector 130 of the pigger 100 to push the liquid on the p11 path.

1-3. When the pig 60 is detected by the pig detector 210 of the first in-line pig receiver 200, the compact valve 220 is closed to block the paths p11-p12 from p11 to p12, and Opening the drain 150 creates a path through which residual liquid on the p11 path will be discharged.

1-4. By using the pig injector 230 of the first in-line pig receiver 200, the pig 60 is sent to the pigtailer 100 to discharge the remaining liquid on the p11 path to the drain 150. At this time, the discharged residual liquid is recovered to the small capacity mixing unit 11.

1-5. The injector 250 of the first inline pig receiver 200 and the injector 440 in the path of the supply part 10 of the manifold 400 and the injector 440 in the path of the filling part 20 of the manifold 400 are used. Then, the liquid on the p12 path and the p13 path is pushed to the small-capacity filling unit 21 via the p22-p23 path.

1-6. The matrix valve 410 branched from p12 to p22 is changed from p21 to p22 (blocking p12-p22), and the pigment 60 in the path of the filling part 20 is moved to p21. It sends to the second in-line pig receiver 300 via the -p22-p23 path to push the liquid on the path to the small-capacity filling section 21.

1-7. When the pig 60 is detected by the pig detector 310 of the second in-line pig receiver 300, the compact valve 320 is closed to block the path leading to the small-capacity filling unit 21 at p23, and the Opening the drain 150 creates a path through which residual liquid on the p21-p22-p23 path will be discharged.

1-8. The pig injector 330 of the second in-line pig receiver 300 is used to send the pig 60 to the pigtailer 100 to discharge the remaining liquid on the p21-p22-p23 path to the drain 150. At this time, the discharged residual liquid is collected by the residue collection unit 30.

2. For large fillings (see Figure 2)

2-1. When the liquid supplied from the large-capacity mixing unit 12 is filled and transferred to the large-capacity filling unit 22, the compact valve 320 of the second in-line pig receiver 300 is opened to open the path, and the manifold 400 is opened. By using the compact valve 420 of the large-capacity filling section 22 to make a path (p11-p22-p23).

2-2. When the open path is formed from the large-capacity mixing unit 12 to the large-capacity filling unit 22, the mixed liquid is supplied from the large-capacity mixing unit 12. The supplied liquid is filled into the large-capacity filling unit 22 via a path (p11-p22-p23) branched to the large-capacity filling unit 22.

2-3. When the filling is completed, the on / off valve 430 is opened to allow the remaining liquid on the p11-p13 path to be discharged through the on / off valve 430. The discharged residual liquid is recovered to the large capacity mixing unit 12.

2-4. The compact valve 420 branches from p11 to p22 and changes from p21 to p22 (block p11-p22), and the pig 60 in the filler part 20 of the filling part 20 passes p21. It sends to the second in-line pig receiver 300 via the -p22-p23 path to push the liquid on the path to the large-capacity filling section 22.

2-5. When the pig 60 is detected by the pig detector 310 of the second in-line pig receiver 300, the compact valve 320 is closed to block a path leading to the large-capacity filling unit 22 at p23, and then the Opening the drain 150 creates a path through which residual liquid on the p21-p22-p23 path will be discharged.

1-8. The pig injector 330 of the second in-line pig receiver 300 is used to send the pig 60 to the pigtailer 100 to discharge the remaining liquid on the p21-p22-p23 path to the drain 150. At this time, the discharged residual liquid is collected by the residue collection unit 30 or directly recovered to the large-capacity mixing unit 12.

FIG. 3 shows a main part of a configuration in which the configuration of FIG. 1 and the configuration of FIG. 2 are mixed, and may be configured as in FIG. 4 as a whole.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes within the scope not departing from the technical idea of the present invention are common in the art. It will be apparent to those who have knowledge.

100: Pigtailer
110: Pig Detector
120: compact valve
130: Pig Injector
140: pressure sensor
150: drain
160: Pig Signaler
200: first in-line pig receiver
210: Pig Detector
220: compact valve
230: Pig Injector
240: pig stopper
250: injector
300: second inline pig receiver
310: Pig Detector
320: compact valve
330: Pig Injector
340: Pig Stopper
400: Manifold
410: matrix valve
420: compact valve
430: on-off valve
440: Injector
10: supply part
11: small volume mixing part
12: large capacity mixing part
20: filling part
21: small volume filling unit
22: large capacity filling unit
30: Residue collection unit
60: pig

Claims (3)

A manifold 400 connecting the supply part 10 and the filling part 20 so that the liquid is supplied to the supply part 10 including the plurality of inlet pipes and discharged to the filling part 20 including the plurality of discharge pipes;
Between the supply unit 10 and the manifold 400 of the linear path connected to the supply unit 10 and on the opposite side of the filling unit 20 on the basis of the manifold 400 of the linear path connected to the filling unit 20. Pigment 100 is installed to receive the pig 60 to send the pig 60 back toward the manifold 400;
The first in-line pig receiver installed between the plunger 100 and the manifold 400 in a straight path connected to the supply unit 10 and receiving and returning the pigs sent from the pigeon 100 in the path of the supply unit 10 ( 200);
The second in-line pig, which is installed between the filling part 30 of the linear path connected to the filling part 20 and the manifold 400, receives and returns the pigs sent from the pigger 100 of the filling part 20 path. Receiver 300, including;

The manifold 400 is
It is installed at the part where the path of the supply part 10 and the path of the filling part 20 cross each other and branches the liquid flowing from the path of the supply part 10 into the path of the filling part 20, and the path of the supply part 10 and the filling. Matrix valve 410 is formed to enable both directions of the path of the part 20,
It characterized in that it comprises an injector 440 for injecting residual liquid by injecting air from one side of the flow path
Pigging system for reducing residual liquid in liquid filling manifolds.
The method of claim 1,
The injector 440 is
It is installed between the manifold 400 and the second in-line pig receiver 300 in the path of the filling unit 20 to push the remaining liquid toward the filling unit 20,

The pigger 100 is
And a drain 150 for discharging the remaining liquid collected with the returning pig 60 out of the flow path in which the pig launcher 100 is installed.

The first inline pig receiver 200
It characterized in that it comprises an injector 250 for injecting air toward the manifold 400 by injecting air toward the manifold 400
Pigging system for reducing residual liquid in liquid filling manifolds.
The method of claim 2,
The injector 440 of the manifold 400 and the injector 250 of the first inline pig receiver 200 are
A vortex injector for injecting air in a vortex form
Pigging system for reducing residual liquid in liquid filling manifolds.

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