KR20210048808A - Drain system of semi rig for preventing backflow - Google Patents

Abstract

Provided is a drain system of a semi rig for preventing backflow of wastewater discharged from a cabin on a deck supported by a column. According to the present invention, the drain system of a semi rig for preventing backflow may comprise: a main drain providing a flow path for the movement of wastewater to the deck; a cabin drain for guiding wastewater discharged from the cabin to the main drain; a drain holding tank provided in the column and storing wastewater discharged through the main drain; and a sub drain which guides the wastewater contained in the main drain to the outside when the deck is inclined over a certain angle.

Description

DRAIN SYSTEM OF SEMI RIG FOR PREVENTING BACKFLOW}

The present invention relates to a semi-rig non-return drain system.

In general, a rig or FPSO dedicated to subsea drilling can perform subsea drilling work while anchored at a point on the sea using a mooring device.

The semi-rig dedicated to subsea drilling consists of a pontoon disposed to dive to a certain depth from the sea level, a column disposed vertically from the pontoon, and a horizontal deck formed on the top of the column.

The drain treatment method of the semi-rig is a method of sending wastewater discharged from the living quarters through a drain line to a drain holding tank. Since the drain line is inclined at a certain inclination angle (1:100 slope) in the deck, wastewater can be accommodated in the drain holding tank through the drain line.

However, when the semi-rig is rolled, when the main body of the semi-rig is inclined in a direction opposite to the inclination direction of the drain line, at least a certain inclination angle (for example, 1.43°), the wastewater contained in the drain is transferred to the residence. There is also a regurgitation.

Patent Document: Korean Patent Publication No. 10-2016-0066981 (published on June 13, 2016)

Embodiments of the present invention are intended to provide a semi-rig anti-return drain system capable of preventing backflow of wastewater accommodated in the drain to the residence during rolling of the main body.

A semi-rig backflow prevention drain system according to an aspect of the present invention is a semi-rig backflow prevention drain system for draining wastewater discharged from a dwelling on a deck supported by a column, wherein the flow path for the movement of wastewater is described above. A main drain provided to the deck; A dwelling drain for guiding wastewater discharged from the dwelling to the main drain; A drain holding tank provided in the column and storing wastewater discharged through the main drain; And a sub-drain for guiding the wastewater contained in the main drain to the outside when the deck is inclined by a predetermined angle or more.

In this case, the sub-drain includes a first sub-pipe bently connected to an end of the main drain; A second sub-pipe having one end connected to the end of the first sub-pipe and the other end exposed to the outside to guide the wastewater to the outside; And a valve provided in the second sub-pipe to open and close a flow path through which the wastewater moves.

In addition, the valve may include a check valve that allows only one-way movement of wastewater directed to the outside of the main body.

In addition, the first sub-pipe is curvedly connected between a first connector connected to an end of the main drain, a second connector connected to one end of the second sub-pipe, and the first connector and the second connector. And a curved pipe, and the first connector may be located at a point higher than that of the second connector.

In addition, the curved pipe may be formed to be bent in a'∩' shape between the first connector and the second connector.

In addition, the present invention is a sensor for measuring the inclination angle of the deck inclined; An actuator for opening and closing the valve; And a controller for applying an operation signal for opening the valve to the actuator when the inclination angle measured by the detection sensor is higher than a preset reference angle.

Embodiments of the present invention have an advantage that it is possible to prevent the phenomenon that the wastewater contained in the drain flows back to the living area when the main body is rolled.

In addition, embodiments of the present invention are advantageous in that space utilization in the semi-rig can be improved by arranging an important facility of high importance in the center of the semi-rig and a drain holding tank of low importance in one column of the semi-rig. have.

1 is a block diagram showing a drain system for preventing backflow of a semi-rig according to an embodiment of the present invention.
2 is a perspective view showing an enlarged portion "A" of FIG. 1.
3 is a block diagram showing a control configuration of a backflow prevention drain system of a semi-rig according to another embodiment of the present invention.

Hereinafter, a configuration and operation according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The following description is one of the many aspects of the invention that are claimable, and the following description may form part of the detailed description of the invention. However, in describing the present invention, detailed descriptions of known configurations or functions may be omitted to clarify the present invention.

Since the present invention can make various changes and include various embodiments, specific embodiments will be illustrated in the drawings and described in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all changes, equivalents, or substitutes included in the spirit and scope of the present invention.

In addition, terms including ordinal numbers such as first and second may be used to describe various elements, but the corresponding elements are not limited by these terms. These terms are only used for the purpose of distinguishing one component from another. When an element is referred to as being'connected' or'connected' to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

1 is a block diagram showing a backflow prevention drain system of a semi-rig according to an embodiment of the present invention, and FIG. 2 is a perspective view showing an enlarged portion "A" of FIG. 1.

1 to 2, the backflow prevention drain system 100 according to an embodiment of the present invention includes a housing 14 on a deck 12 supported by a column 11 when the main body is rolled. It is possible to prevent the wastewater discharged from flowing back to the accommodation port (14). Here, the main body may be understood as a floating structure constituting a semi-rig so that various types of work are possible at a point on the sea.

The backflow prevention drain system 100 for implementing this may include a main drain 110, a drain 120, a drain holding tank 130, and a sub drain 140.

Specifically, the main drain 110 may provide a flow path for the movement of wastewater inside the deck 12. Here, the deck 12 may be provided in the form of a flat plate supported by a plurality of columns 11. A living area 14 in which sailors can reside may be provided at one edge of the deck 12. In addition, an important facility (not shown) having a relatively high importance may be provided in the center of the deck 12.

The main drain 110 may include a first main pipe 111 and a second main pipe 112.

The first main pipe 111 may extend downwardly inclined at a predetermined angle from the inside of the deck 12 toward the drain holding tank 130. For example, the first main pipe 111 may be disposed to be inclined downward from the inside of the deck 12 toward the direction in which the drain holding tank 130 is located at an inclination angle (1:100 slope: approximately 0.57°). have. In this embodiment, the first main pipe 111 has an inclination angle of about 0.57°, but is not limited thereto, and in consideration of the gravity flow of wastewater, the first main pipe 111 has various inclinations. Of course, it can be arranged to have an angle.

The second main pipe 112 may connect between the first main pipe 111 and the drain holding tank 130. The second main pipe 112 may guide the wastewater moved from the first main pipe 111 to the drain holding tank 130.

The dwelling drain 120 connects the sewage treatment facility of the dwelling 14 and the main drain 110 to guide wastewater (living drainage) discharged from the dwelling 14 to the main drain 110. have. The drainage end of the dwelling drain 120 from which wastewater is discharged may be connected to an upper end of the main drain 110.

The drain holding tank 130 may be provided in the column 11. The columns 11 may be provided in a plurality that are vertically spaced apart from the pontoons 13 disposed in the water. The plurality of columns 11 may stably support the bottom surface of the deck 12.

In particular, a facility having a relatively low importance, such as a drain holding tank 130, may be provided in the column 11 supporting the other side edge of the deck 12. Since the drain holding tank 130 is located on the opposite side where the accommodation hole 14 is installed, that is, on the other edge of the deck 12, it is possible to prevent weight bias in the body due to the load of the accommodation hole 14. , Stability can be secured by maintaining the overall weight balance in the body.

The drain holding tank 130 may provide a storage space capable of accommodating wastewater. Wastewater discharged from the main drain 110 may be stored in the storage space of the drain holding tank 130.

When the deck 12 is inclined by a certain angle or more, the sub-drain 140 is in a direction opposite to the inclination direction of the main drain 110, and in more detail, the sub-drain 140 has a certain inclination angle (for example, 1.43 degrees). ) When inclined or more, the wastewater contained in the main drain 110 may be guided to the outside of the main body. Accordingly, even if the deck 12 is inclined by a certain angle or more, a phenomenon in which wastewater contained in the main drain 110 flows back to the accommodation port 14 can be prevented in advance.

The sub-drain 140 may include a first sub-pipe 141, a second sub-pipe 142, and a valve (not shown). The first sub-pipe 141 may bendly connect the end of the main drain 110 and the second sub-pipe 142. For example, the first sub-pipe 141 may be bent upwardly from the end of the main drain 110 and then be bent downward to be connected to the second sub-pipe 142.

At this time, the maximum height of the first sub-pipe 141 is before the wastewater contained in the main drain 110 flows back into the accommodation port 14 due to the inclination of the deck 12, the wastewater is removed from the first sub-pipe 141. It may be designed to have a height that can be passed through and bypassed to the second sub-pipe 142. Therefore, even if the deck 12 is inclined by a certain angle or more, the wastewater contained in the main drain 110 flows back into the accommodation 14, instead of flowing back into the first sub-pipe 141 and the second sub-pipe 142. It can be discharged to the outside of the body through.

The first sub-pipe 141 includes a first connector 141a connected to an end of the main drain 110, a second connector 141b connected to one end of the second sub-pipe 142, and a first connector ( 141a) and the second connector 141b may include a bent pipe 141c to bendly connected therebetween. At this time, the first connector 141a may be located at a point higher than the second connector 141b, and the curved pipe 141c has a'∩' shape between the first connector 141a and the second connector 141b It can be formed to be curved.

The second sub-pipe 142 may guide the wastewater moved through the first sub-pipe 141 to the outside of the main body. To this end, one end of the second sub-pipe 142 may be connected to the end of the first sub-pipe 141, and the other end of the second sub-pipe 142 may be exposed to the outside of the main body to guide wastewater to the outside. have.

The valve may be provided in the second sub-pipe 142 to open and close a flow path through which wastewater moves. For example, the valve may be a check valve that allows only one-way movement of wastewater directed to the outside of the body. Since the check valve allows only one-way movement of wastewater to the outside of the main body, it is possible to prevent seawater from flowing into the main body through the second sub-pipe 142 in advance.

3 is a block diagram showing a control configuration of a backflow prevention drain system of a semi-rig according to another embodiment of the present invention.

As shown in Figure 3, the backflow prevention drain system according to another embodiment of the present invention, the main drain 110, the dwelling drain 120, a drain holding tank 130, a sub drain 140, a detection sensor 150, may include an actuator 160 and a controller 170.

Here, the detection sensor 150, the actuator 160, and the controller 170 are in the remaining configurations, for example, the main drain 110, the dwelling drain 120, the drain holding tank 130, and the sub drain 140. Since the configuration is similar as a whole, a detailed description of these configurations will be omitted. Hereinafter, differences from the exemplary embodiment will be mainly described.

The detection sensor 150 may include sensors capable of measuring an inclination angle at which the deck 12 is inclined. For example, the detection sensor 150 may be a conventional tilt sensor capable of measuring the tilt angle of the deck 12.

The actuator 160 may provide a driving force to the valve for selectively opening and closing the flow path of the valve. The actuator 160 may include a conventional driving motor or a hydraulic cylinder capable of providing a driving force for opening and closing the flow path of the valve to the valve.

The controller 170 selectively applies an operation signal to the actuator 160 so that the flow path of the valve is selectively opened and closed.

For example, if the inclination angle measured by the detection sensor 150 is higher than a preset reference angle (for example, 1.43 degrees), the controller 170 may apply an operation signal for opening the valve to the actuator 160. have. In addition, when the inclination angle measured by the detection sensor 150 is lower than a preset reference angle (for example, 1.43 degrees), the controller 170 may apply an operation signal for closing the valve to the actuator 160. .

The controller 170 may be implemented by a computing device including a microprocessor, a memory, and the like, and the implementation method is obvious to those skilled in the art, so a detailed description thereof will be omitted.

Accordingly, when the deck 12 is inclined to a higher angle than a preset reference angle, the flow path of the valve is opened according to the control of the controller 170, so that the wastewater contained in the main drain 110 is transferred into the accommodation port 14. Instead of flowing back, it may be discharged to the outside of the body through the first sub-pipe 141 and the second sub-pipe 142.

As described above, the present invention can prevent in advance the phenomenon that the wastewater contained in the drain flows back to the residence during the rolling of the main body, and the important facilities of high importance are arranged in the center of the semi-rig, and the drain holding tank of low importance By arranging the in the column on one side of the semi-rig, it has excellent advantages, such as improving space utilization in the semi-rig.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features. You will be able to understand. For example, a person skilled in the art may change the material, size, etc. of each component according to the field of application, or combine or substitute embodiments to implement it in a form not clearly disclosed in the embodiments of the present invention, but this is also the present invention. It does not go beyond the scope of. Therefore, the embodiments described above are illustrative in all respects and should not be understood as limiting, and it should be said that these modified embodiments are included in the technical idea described in the claims of the present invention.

100: backflow prevention drain system 110: main drain
120: Drainage of residence 130: Drain holding tank
140: sub-drain 150: detection sensor
160: actuator 170: controller

Claims (6)

As a semi-rig anti-return drain system to prevent backflow of wastewater discharged from the accommodation on the deck supported by the column,
A main drain providing a flow path for the movement of wastewater to the deck;
A dwelling drain for guiding wastewater discharged from the dwelling to the main drain;
A drain holding tank provided in the column and storing wastewater discharged through the main drain; And
When the deck is inclined by a predetermined angle or more, a sub-drain for guiding the wastewater contained in the main drain to the outside; including
Semi-rig backflow prevention drain system. The method of claim 1,
The sub drain is
A first sub-pipe bently connected to an end of the main drain;
A second sub-pipe having one end connected to the end of the first sub-pipe and the other end exposed to the outside to guide the wastewater to the outside; And
Including a valve provided in the second sub-pipe to open and close a flow path through which the wastewater moves,
Semi-rig backflow prevention drain system. The method of claim 2,
The valve is
Including a check valve that allows only one-way movement of the wastewater toward the outside of the body,
Semi-rig backflow prevention drain system. The method of claim 2,
The first sub pipe is
A first connector connected to an end of the main drain, a second connector connected to one end of the second sub-pipe, and a curved pipe bently connected between the first connector and the second connector,
The first connector is
Located at a point higher than the second connector,
Semi-rig backflow prevention drain system. The method of claim 4,
The bent pipe is
Formed to be bent in a'∩' shape between the first connector and the second connector,
Semi-rig backflow prevention drain system. The method of claim 1,
A detection sensor for measuring an inclination angle at which the deck is inclined;
An actuator for opening and closing the valve; And
A controller for applying an operation signal for opening the valve to the actuator when the inclination angle measured by the detection sensor is higher than a preset reference angle; further comprising,
Semi-rig backflow prevention drain system.

Images