KR102196108B1 - Using globe valve change method for fuel cell system of submarine - Google Patents

Abstract

The present invention relates to supply port compensator replacement and, more specifically, to a compensator replacement method using a globe valve in an oxygen supply system for a submarine fuel cell which replaces a compensator after replacing a valve of an oxygen supply line connected to an oxygen tank with a globe valve when replacing the compensator to prevent foreign substances or the like created in the replacement process from being transferred to the oxygen tank and stably perform various tests after the replacement. The globe valve comprises: a main body (100) having an inlet (110) and an outlet (120) having the same structure and formed on the front side to communicate with each other to connect the compensator (H06) and the oxygen supply line of the oxygen tank (H12), and forming an opening part (130) in which the center of a connection path connecting the inlet (110) and the outlet (120) is opened upwards; a blocking valve (200) which has a vertical penetration hole (210) and is vertically coupled to the opening part (130) to allow the inlet (110) and the vertical penetration hole (210) to communicate with each other, and blocks the outlet (120) and the oxygen tank (H12); and a locking part (300) to fix the blocking valve (200) on the main body (100).

Description

How to replace compensator using globe valve in oxygen supply system for submarine fuel cell {USING GLOBE VALVE CHANGE METHOD FOR FUEL CELL SYSTEM OF SUBMARINE}

The present invention relates to a replacement of a compensator for an oxygen supply and supply port for a fuel cell of a submarine, and more particularly, when the compensator is replaced, the valve of the oxygen supply line connected to the oxygen tank is replaced with a separate globe valve, and then the compensator is replaced. The present invention relates to a method of replacing a compensator using a globe valve in an oxygen supply system for a submarine fuel cell that prevents foreign substances from being transmitted to the oxygen tank and enables various inspections to be stably performed after replacement.

During the recent operation of military diesel submarines, the motor starts using batteries due to engine noise problems.To solve the problem of short submarine duration, it uses fuel cells and stores and operates liquid oxygen itself to supply the necessary oxygen in the submarine. Research and technology development have been done. In other words, by installing a fuel cell system on the hull, a submarine is introduced that improves cruising speed, increases the time available for high-speed navigation, and enables underwater operations (submersion) without injury for a long time.

This fuel cell system controls the chemical reaction rate of hydrogen and oxygen to produce electric energy directly from the chemical energy of hydrogen, so even if it is not supplied with air from the outside, the power required for propulsion of the submarine and the survival of the crew. Can be stably provided.

In addition, the fuel cell system of the submarine stores high-density liquid oxygen in an oxygen tank and supplies it to the fuel cell in order to increase power production efficiency and minimize the volume due to the nature of an environment where oxygen is scarce.

That is, as shown in Fig. 1, an oxygen receiver (H01), first to third hull valves (H03) (H04) (H05), compensator (H06), oxygen supply shutoff valve (H07), oxygen discharge shutoff valve (H09), an oxygen gas filling valve (H10), an oxygen liquid filling valve (H11), and an oxygen tank (H12) are connected to each other through an oxygen supply line (L).

The oxygen tank H12 receives and stores liquid oxygen from the outside of the submarine through a separate supply line, and on this supply line (path) compensates for the stress caused by temperature changes during the supply of oxygen, and also ) And a compensator (H06) to prevent the transmission of vibration to the hull and to prevent damage and failure of the system is provided.

Looking at the conventional compensator replacement process, first, the pipe forming the compensator H06 is cut, the pipe cross-section grinding operation is continuously performed, the pipe is cleaned of dust, and then the welding gas injection process is performed. After that, the work is carried out in the order of non-destructive testing, pressure testing, and leakage testing.

Here, the pipe that is connected to the compensator (H06) to form the oxygen supply line (L) has a double pipe structure, so the above procedure must be carried out in the internal pipe (inner tank) and then in the external pipe (outer tank). It will be conducted twice.

On the other hand, looking at the oxygen supply line, it is connected from the hull valve (H03-04-05) to the oxygen tank (H12), and the inner tank is a pipe through which oxygen flows, and the outer tank is a pipe through which oxygen flows. It is a pipe leading to the tank). Further, the compensator H06 has a double tube structure.

To replace the above compensator (H06), cut the outer tub (double pipe) into a cover type and separate it, cut the inner tub, and remove.

At this time, in order to replace the new compensator (H06), the inner tub must be welded first and the inner tub must be inspected.To this end, cut the inner tub pipe and grind (beveling) the connection part for welding, and then nitrogen gas inside the pipe. The residual material (iron powder generated during pipe grinding, welding sludge generated during welding, etc.) must be discharged from the pipe.

However, when nitrogen gas is blown into the inner tank in the direction of the water supply (H01), impurities are discharged to the cut place of the compensator (H06), and nitrogen gas is blown from the compensator (H06) to the valves (H10, H11) of the oxygen tank. When it is put in, the residual oil impurities in the pipe flow into the oxygen tank H12, so that the impurity removal operation becomes impossible.

And, gas injection is to proceed with dust cleaning, welding gas injection, pressure test, and airtightness test in the pipe according to the working procedure. As shown in Fig. 1, gas is injected into the water supply port (H01) outside the submarine or a submarine Gas injection is possible from the inner hull valve (H05). In addition, for dust cleaning or welding gas in the pipe, gas should be injected from one side of the compensator (H06) to be replaced and discharged from the other side. Gas injection or discharge can be performed at the supply and demand ports (H01) or the hull valve (H05), but the compensator There is an oxygen tank (H12) on the other side of (H06), so work is impossible. To do this, the valves H10 and H11 must be separated from the oxygen supply line to discharge gas. At this time, when the valves H10 and H11 are separated from the main body and the gas is discharged, there has been a problem in that the oxygen supply line generates a bidirectional flow, and thus contamination of the oxygen tank H12 inevitably occurs. In addition, the interior of the submarine is a closed space, but the interior of the oxygen supply line made of piping has a problem in that the air inside the submarine is contaminated due to the discharge of the gas for cleaning the dust or the gas for welding, resulting in deterioration of air quality.

The background technology or the prior art described herein is information possessed by the present inventors or acquired in the process of deriving the present invention, and is only intended to help understand the technical significance of the present invention. It is stated that it does not mean a well-known technology in the field.

KR 10-1747560 B1 (2017.06.08) KR 10-2015-0088115 A(2015.07.31) KR 10-2013-0055189 A(2013.05.28)

Accordingly, the inventors of the present invention intend to develop a new structure that allows the replacement of the compensator to be stable and simple, from the idea of solving the technical limitations and problems of the compensator in the existing submarine structure while comprehensively considering the above matters. The present invention was invented as a result of continuous research with great effort.

Therefore, the technical problem and object to be solved by the present invention is to enable a simple and stable replacement of the compensator in the submarine fuel cell system.

In other words, nitrogen gas must be blown from the direction of the valves H10 and H11 of the oxygen tank H12 to the direction of the compensator H06 so that residual impurities in the pipe are discharged. To this end, the valves H10 and H11 of the oxygen tank H12 After removing H11), a separate valve is installed in the removed position to allow nitrogen gas to flow in the desired direction (oxygen tank direction or compensator direction).

This means that the valves (H10, H12) of the oxygen tank (H12) block the lower part in the form of a globe valve and the side is open, the lower part is open and the side is blocked, and the lower part or side Any of these connections may be open or closed.

Herein, the technical problems and objects to be solved by the present invention are not limited to the technical problems and objects mentioned above, and other technical problems and objects not mentioned will be clearly understood by those skilled in the art from the following description.

Specific means according to the present invention for achieving the above object and solving the technical problem are oxygen receiver, first to third hull valve, compensator, oxygen supply shutoff valve, oxygen discharge shutoff valve, oxygen gas filling In the oxygen supply system for a submarine fuel cell in which a valve, a valve for filling oxygen liquid, and an oxygen tank are connected to each other through an oxygen supply line to perform a function of supplying/blocking/discharging oxygen,

When replacing the compensator,

The oxygen gas filling valve and the oxygen liquid filling valve are respectively replaced with globe valves,

The globe valve,

It has the same structure, and the inlet and the outlet are formed to be in communication with each other to connect the compensator and the oxygen supply line of the oxygen tank, and the center of the connection path connecting the inlet and the outlet forms an opening opening upwardly. A main body having an upper and lower through-holes and vertically coupled to the opening to communicate the inlet and the upper and lower through-holes, and a shut-off valve for blocking the oxygen tank and the outlet, and a locking hole for fixing the shut-off valve to the body. In application.

In the main body, an upward blocking wall partially protrudes downward on the inlet side and a downward blocking wall partially protrudes upward on the outlet side based on the center of the connection path connecting the inlet and the outlet.

The shut-off valve, the intermediate expansion portion is mounted on the upper end of the opening of the main body and fixed to the opening with a locking hole, the lower one side is in close contact with the inlet-side upward blocking wall, and in contact with the upper surface of the downward blocking wall on the outlet side Blocking the outlet, it is possible to apply the upper and lower through-holes formed in the center to communicate with the inlet.

Herein, the technical problems and objects to be solved by the present invention are not limited to the technical problems and objects mentioned above, and other technical problems and objects not mentioned will be clearly understood by those skilled in the art from the following description.

An aspect of the present invention with means and configuration for achieving the above object and solving the technical problem is, in the compensator replacement process, a valve connected through an oxygen tank and an oxygen supply line is in the form of a globe valve. There is an advantage in that the compensator replacement work can be performed simply and stably by applying what has been made.

Here, the effects of the present invention are not limited to the above-mentioned effects, and other effects that are not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a schematic diagram showing an oxygen supply line of a conventional submarine fuel cell system.
2 is a schematic diagram showing an oxygen supply line of the submarine fuel cell system according to the present invention.
3 is a perspective view of a globe valve according to an embodiment of the present invention.
4 is a front view of FIG. 3.
5 is a cross-sectional view of FIG. 4.
6 is a cross-sectional view of FIG.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

Prior to this, the terms to be described later are defined in consideration of functions in the present invention, and this should be interpreted as a concept conforming to the technical idea of the present invention and a meaning commonly or commonly recognized in the art.

In addition, when it is determined that a detailed description of known functions or configurations related to the present invention may obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Herein, the accompanying drawings are partially exaggerated or simplified for explanation of the configuration and operation of the technology, and for convenience and clarity of understanding, and it is understood that each component does not exactly match the actual size and shape.

In addition, in the present specification, the term and/or means a combination of a plurality of related items or any item among a plurality of related items, and when a certain part includes a certain element, it is a particularly opposite description. Unless there is no other component is not excluded, it means that other components can be further included.

That is, it means that the features, numbers, steps, actions, components, parts, or combinations of these described in the present specification exist, and one or more other features or numbers, step-action components, parts, or a combination thereof It is to be understood that they do not exclude the possibility of their existence or addition.

In addition, terms such as top, bottom, top, bottom, or top, bottom, top, bottom, front and rear, left and right are used for convenience to distinguish the relative positions of each component. For example, the upper part on the drawing may be named or referred to as the upper part and the lower part as the lower part, the length direction as the front-rear direction, and the width direction as the left-right direction.

Also, terms such as first and second may be used to describe various components. That is, terms such as first and second may be used only for the purpose of distinguishing one component from another component. For example, a first component may be referred to as a second component without departing from the protection scope of the present invention, and a second component may also be referred to as a first component.

In the present invention, referring to FIGS. 1 to 6, an oxygen receiver (H01), a first to third hull valve (H03) (H04) (H05), a compensator (H06), an oxygen supply shutoff valve (H07), Oxygen for submarine fuel cell consisting of an oxygen discharge shutoff valve (H09), an oxygen gas filling valve (H10), an oxygen liquid filling valve (H11), and an oxygen tank (H12), which are connected through a double-pipe oxygen supply line. In the supply system, when replacing the compensator (H06), the oxygen gas filling valve (H10) and the oxygen liquid filling valve (H11) are replaced with a new globe valve (G10) (G11) for the replacement stability of the compensator (H06). After replacement, the compensator (H06) is to be replaced.

That is, when the compensator H06 is replaced, the oxygen gas filling valve H10 and the oxygen liquid filling valve H11 may be replaced with globe valves G10 and G11, respectively.
After the compensator H06 is replaced, the globe valves G10 and G11 may be replaced with the oxygen gas filling valve H10 and the oxygen liquid filling valve H11.

The globe valves G10 and G11 have the same structure and have an inlet 110 and an outlet 120 on both sides to connect the compensator H06 and the oxygen supply line L of the oxygen tank H12. The main body 100 is formed to communicate with each other and forms an opening 130 in which the center of the connection path 112 and 122 connecting the inlet 110 and the outlet 120 is opened upward, A shut-off valve 200 that has a through hole 210 and is coupled vertically to the opening 130 to communicate the inlet 110 and the upper and lower through-holes 210 and blocks the oxygen tank H12 and the outlet 120 ) And a locking hole 300 for fixing the shutoff valve 200 to the main body 100.

The main body 100 has an upward blocking wall 140 partially protruding downward on the inlet side, based on the center of the connection path 112 and 122 connecting the inlet 110 and the outlet 120, On the outlet side, a downward blocking wall 160 is partially protruded upward.

The shut-off valve 200 is fixed to the opening 130 by a locking hole 300 by the intermediate extension 220 is mounted on the upper end of the opening 130 of the main body 100, the lower one side is the In close contact with the inlet-side upward blocking wall 140, and in contact with the upper surface of the outlet-side downward blocking wall 160 to block the outlet 120, the upper and lower through-holes 210 formed in the center of the inlet 110 and It is formed to communicate.

Reference numerals 131 and 132 in the drawing are gaskets for airtight action.

A method of replacing a compensator using a globe valve in the oxygen supply system for a submarine fuel cell according to the present invention configured as described above will be described as follows.

Looking at the essential components of the submarine fuel cell system, as shown in Fig. 1, the oxygen receiver (H01), the first to third hull valves (H03) (H04) (H05), the compensator (H06), the oxygen supply is cut off. It consists of a valve (H07), an oxygen discharge shutoff valve (H09), an oxygen gas filling valve (H10), an oxygen liquid filling valve (H11), and an oxygen tank (H12), which are connected through an oxygen supply line with a double piping structure. Has been.

To perform the replacement work of the compensator H06 in this state, first, the oxygen supply shutoff valve H07 and the oxygen gas filling valve H09 are separated, and then, as shown in FIG. G10, G11) respectively.

That is, the oxygen gas filling valve (H09) is replaced with a globe valve (G09), and the oxygen liquid filling valve (H11) is replaced with a globe valve (G11).

At this time, the passage leading to the oxygen tank H12 is blocked by the globe valves G10 and G11.

Thereafter, the oxygen supply line (L) is formed and the inner tank and the outer tank are separated from each other and replaced with a new compensator (H06).
After replacing the compensator H06, the globe valves G10 and G11 may be replaced with the oxygen gas filling valve H10 and the oxygen liquid filling valve H11.

On the other hand, the present invention is not limited by the above-described embodiments and the accompanying drawings, and can be variously modified and applied in various ways not illustrated without departing from the technical spirit of the present invention. It is obvious to those of ordinary skill in the art that substitutions and other equivalent embodiments may be widely applied.

Therefore, the content related to the modification and application of the technical features of the present invention should be interpreted as being included within the spirit and scope of the present invention.

100: main body
110: inlet 120: outlet
130: opening
200: shut-off valve
210: upper and lower through holes 220: expansion part
300: locking hole

Claims (3)

Oxygen receiver (H01), first to third hull valves (H03) (H04) (H05), compensator (H06), oxygen supply shutoff valve (H07), oxygen discharge shutoff valve (H09), oxygen gas filling valve In the submarine fuel cell oxygen supply system in which (H10), an oxygen liquid filling valve (H11), and an oxygen tank (H12) are connected to each other through an oxygen supply line to perform oxygen supply/blocking/discharging functions,
In the process of replacing the compensator H06,
In a state in which the oxygen gas filling valve (H10) and the oxygen liquid filling valve (H11) are replaced with a globe valve (G10) and a globe valve (G11), respectively, the compensator (H06) is replaced, and the compensator ( H06) is replaced with the oxygen gas filling valve (H10) and the oxygen liquid filling valve (H11) again,
The globe valve (G10) (G11),
It has the same structure, and the inlet 110 and the outlet 120 are formed in communication with each other to connect the oxygen supply line of the compensator H06 and the oxygen tank H12, and the inlet 110 and the outlet Based on the center of the connection path connecting the 120, an upward blocking wall partially protrudes downward on the inlet 110 side, and a downward blocking wall partially protrudes upward on the outlet 120 side, , A shut-off valve that has upper and lower through holes 210 and is vertically coupled to the opening 130 to communicate the inlet 110 and the upper and lower through-holes 210, but blocks the oxygen tank H12 and the outlet 120 ( 200) and a method for replacing a compensator using a globe valve in an oxygen supply system for a submarine fuel cell to which the shut-off valve 200 is configured with a locking hole 300 to be fixed to the main body 100.
delete The method of claim 1,
The shutoff valve 200 is,
An intermediate expansion part is placed on the upper end of the opening of the main body and fixed to the opening with a locking hole, and one lower side is in close contact with the upper blocking wall on the inlet side, and contacts the upper surface of the downward blocking wall on the outlet to block the exit, A method for replacing a compensator using a globe valve in an oxygen supply system for a submarine fuel cell, characterized in that the upper and lower through holes formed in the center are formed to communicate with the inlet.

Images