KR102196113B1 - Fuel cell system of submarine - Google Patents

Abstract

The present invention relates to a hull valve set coupled to a hydrogen supply line in a structure of double pipes connecting a hydrogen tank and a supply device in a hydrogen supply system for a fuel cell in a submarine and, more specifically, to an induction port for coupling a hull valve set for a hydrogen supply system for a fuel cell in a submarine, which can quickly and exactly discharge remaining gas generated by a structure of double pipes in accordance with compensator replacement work by coupling the induction port inducing leakage gas to a connecting port of the hull valve set in a process of replacing a compensator.

Description

Guidance port for the hull valve set of the submarine fuel cell oxygen supply system {FUEL CELL SYSTEM OF SUBMARINE}

The present invention relates to a hull valve set coupled to an oxygen supply line of a double pipe structure connecting an oxygen tank and a water supply in an oxygen supply system for a submarine fuel cell, and more particularly, a leak gas at the connection port of the hull valve set in the process of replacing the compensator. The present invention relates to an induction port for a hull valve set of a submarine fuel cell oxygen supply device that combines an induction port to induce an induction port to quickly and accurately discharge residual gas generated by a double piping structure according to a compensator replacement operation.

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 carried out. 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.

Meanwhile, the submarine's fuel cell system stores high-density liquid oxygen in an oxygen tank and supplies it to a fuel cell in order to increase power production efficiency and minimize its 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).

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, a pipe cutting operation is performed, a pipe cross-section grinding operation is continuously performed, a dust cleaning operation in the pipe is performed, and then a 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.

On the other hand, if you look 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 specific place for the leaked oxygen. This is a pipe leading to the (oxygen tank). And, H06 is composed of a double tube structure as a compensator.

To replace the compensator (H06) installed along the oxygen supply line as described above, cut the outer tub (double pipe) into a cover type to 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 from the direction of supply and demand water (H01), impurities are discharged to the place where the compensator (H06) is cut, and the nitrogen gas is blown from the compensator (H06) to the valves (H10, H11) of the oxygen tank. Then, there is a problem that the impurity removal operation becomes impossible because the residual impurities in the pipe flow into the oxygen tank.

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 a problem that the operation is impossible because there is an oxygen tank (H12) on the other side of (H06).

In addition, it is possible to separate the valve from the oxygen supply line and discharge it, but at this time, when the gas is discharged after the valve is separated from the oxygen supply line, the pipe forming the oxygen supply line generates a bidirectional flow, and contamination of the oxygen tank (H12) is inevitable. There has been a problem that occurs.

In addition, the interior of the submarine is a closed space, but there has been a problem in that air quality is deteriorated due to contamination of the air inside the submarine due to the discharge of gas for cleaning dust or welding gas in the pipe.

In other words, looking at the existing problems that occur when replacing the compensator (H06) is as follows. To replace the compensator (H06) connected to the pipe, the work is carried out in the order of pipe cutting -> pipe cross-section grinding -> dust cleaning in pipe -> welding gas injection -> non-destructive inspection -> pressure test and leakage test. Since the pipe constituting (H06) has a double structure, the above procedure must be performed in the inner pipe (inner tank) and then in the external pipe (outer tank), so there is an inconvenience of having to perform it twice.

On the other hand, gas injection is to perform dust cleaning, welding gas injection, pressure test, and airtightness test in the pipe according to the work procedure.In the figure below, gas is injected into the water supply port (H01) outside the submarine, or the hull valve inside the submarine ( H05) gas injection is possible.

In this case, for dust cleaning or welding gas injection in the pipe, gas should be injected from one side of the compensator (H06) to be replaced and discharged from the other side, but gas injection or discharge can be performed at the water supply port (H01) or the hull valve (H05). However, since there is an oxygen tank on the other side of the compensator (H06), it is impossible to work, and for this, there is an inconvenience of discharging the gas by separating the valve from the main body.

In other words, when the gas is discharged after the valve is separated from the oxygen supply line, there is a problem that the oxygen supply line generates a two-way flow and contamination of the oxygen tank (H12) is inevitable, and the inside of the submarine is a closed space, which cleans dust inside the pipe. There is a problem that the air inside the submarine is polluted due to the discharge of the welding gas or the welding gas.

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 comprehensively consider the above-described matters and, in the idea of solving the technical limitations and problems of the replacement stability when replacing the compensator applied to the existing submarine fuel cell system, the replacement of the compensator applied to the submarine fuel cell system In the process, the present invention was invented as a result of strenuous efforts to develop a submarine fuel cell system with a new structure that enables simple and accurate replacement of the compensator in the process.

Therefore, the technical problem and object to be solved by the present invention is to install an induction port for inducing leakage gas after separating the existing valve at the connection port of the hull valve set when replacing the compensator in the submarine fuel cell system, so that the compensator replacement work is fast and accurate. It is to make it happen.

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.

A specific means according to an aspect of the present invention for achieving the above-described object and solving the technical problem is a hull valve set having a connector so that the oxygen receiver, the first to third hull valves are respectively coupled, Compensator connected to the hull valve set in a double pipe structure, oxygen supply shutoff valve, oxygen discharge shutoff valve, oxygen gas filling valve, oxygen liquid filling valve, and oxygen tank are connected by double pipes to provide oxygen supply, cutoff and discharge functions. In the oxygen supply system of a submarine fuel cell to be performed, an inner tank coupling port and an outer tank coupling port provided in the hull valve set and formed to couple a double pipe, and an injection path connected to the outside between the outside of the inner tank coupling port and the inner side of the outer tank coupling port Is formed, and coupled to at least one of the connector, an induction port capable of injecting external gas through the injection path;

The induction tool,

A main body coupled to the connector and having a center guide hole formed at the inner center to be connected to the inner tank, a coupling cap for opening and closing the center guide hole is provided at an upper end, and an extension part formed on the outside that is hooked to the upper end of the connector, and the extension part A locking hole fixed to the main body, a connection hole formed in the expansion part and penetrating up and down so as to communicate with the injection path, and an external gas injection hole coupled to the connection hole and formed with a guide path communicating with the injection path at an inner center thereof. Include.

The present invention proposes a guide port for coupling a hull valve set applied to a compensator replacement in an oxygen supply system of a submarine fuel cell.

The present invention having the means and configuration for achieving the above object and solving the technical problem, when replacing the compensator in the submarine fuel cell system, the valve applied to the hull valve set is replaced with a separate guide, so that the compensator replacement operation is There is an advantage that it can be done quickly and accurately.

That is, there is an advantage in that external gas for replacement of a compensator can be easily injected through an external inlet provided in the induction hole by coupling an induction hole to a connector formed in the hull valve set.

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 block diagram showing an oxygen supply line of a conventional submarine fuel cell system.
2 is a schematic diagram of a submarine fuel cell system according to an embodiment of the present invention.
Figure 3 is an exploded perspective view showing the ship valve set in Figure 2;
4 is a cross-sectional view of FIG. 3.
5 is a side view of FIG. 3.
6 is a cross-sectional view taken along line "EE" in FIG. 5.

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.

The present invention is to be applied to the oxygen supply system of a submarine fuel cell as shown in Figs. 2 to 6, the oxygen receiver (H01), the first to third hull valves (H03) (H04) (H05) The hull valve set (S) having connection ports (S1) (S2) (S3) so that each of them is coupled, a compensator (H06) connected to the hull valve set (S) in a double tube structure, an oxygen supply shutoff valve (H07), oxygen A discharge shut-off valve (H09), an oxygen gas filling valve (H10), an oxygen liquid filling valve (H11), and an oxygen tank (H12) are included.

In addition, each of the above components is connected by a double pipe (L) having an inner tub 12 and an outer tub 14 to supply oxygen through the inner tub 12 and guide leakage gas, etc. to a specific place through the outer tub 14 Is done.

In the hull valve set (S), an inner tub coupling unit 300 and an outer tub fitting unit 400 are formed to protrude on one side so that the double pipe (L) is coupled, and the outer tub fitting unit and the outer tub fitting unit of the inner tub fitting unit 300 The injection path 500 communicated with the outside between the inside of the 400 is formed.

That is, in the injection path 500, one side is positioned between the inner tub and outer tub coupling ports 300 and 400, and the other side is positioned at the end of the connector S1, S2, and S3 to form communication.

In the connector (S1) (S2) (S3), an induction port (G) according to the present invention is coupled, and the induction port (G) is at one side so that external gas can be injected through the injection path (500). An outer tank gas inlet 660 is provided.

The induction port (G) is a main body 620 coupled to at least one of the connection ports (S1) (S2) (S3) of the hull valve set (S), and the main body 600 is a connector (S1) (S2). ) (S3) to be fixed to the end of the locking hole 640.

The main body 620 is coupled to the connector (S1) (S2) (S3) and has a center guide hole 622 formed at the inner center to be connected to the inner tank, and opens and closes the center guide hole 622 at the top. A coupling cap 624 is provided, and an extension part 626 that is hooked to the upper end of the connector is formed on the outside.

The coupling cap 624 is screwed to the upper threaded portion 625 of the main body 620.

The locking port 640 passes through the expansion part 626 and is coupled to the corresponding connector (S1) (S2) (S3) to connect the main body 620 to the connector (S1) (S2) (S3). Will be fixed on.

The extension part 626 is in close contact with the end portions of the connector (S1, S2, and S3), and a connection hole 628 that penetrates up and down so as to communicate with the injection path 500 is formed on the surface.

An outer tank gas injection port 660 is coupled to the connection hole 628, and the outer tank gas injection port 660 is formed with a guide path 662 communicating with the injection path 500 at an inner center.

In the drawings, reference numerals 613, 614, and 615 have an airtight function when they are coupled to each other with a gasket.

In the drawings, reference numeral 900 is in the form of a pressure control valve, and checks when the pressure of the cryogenic liquid increases at room temperature so that it can be ejected at a specific pressure.

In the oxygen supply system of the submarine fuel cell configured as described above, the process of replacing the compensator through the induction hole for combining the hull valve set applied to the replacement of the compensator will be described as follows.

When the compensator (H06) is replaced, the double pipe (L) connected to the compensator (H06) is separated. At this time, the double pipe (L) connected to the oxygen tank (H12) is closed to be closed.

Then, the external gas is injected through the gas inlet 660 of the external tank to enable the operation.

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.

L: double pipe
12: internal assistant 14: external assistant
300: inner shell coupling
400: outer shell coupling
500: with injection
620: main body
622: center guide hole 624: cap
626: extension part 628: connecting hole
640: locking hole
660: external tank gas inlet
662: guide

Claims (2)

Hull valve set (S) having connection ports (S1) (S2) (S3) so that the oxygen receiver (H01) and the first to third hull valves (H03) (H04) (H05) are respectively coupled, the hull valve set Compensator (H06), oxygen supply shutoff valve (H07), oxygen discharge shutoff valve (H09), oxygen gas filling valve (H10), oxygen liquid filling valve (H11), oxygen tank connected to (S) in a double tube structure In the submarine fuel cell oxygen supply system in which (H12) is connected by a double pipe to supply, cut off, and discharge oxygen,
It is provided in the hull valve set (S) to form an injection path communicating to the outside between the inner tubular fitting and outer tub fitting formed so that the double pipe is coupled, and the outer side of the inner tubular fitting and the inner side of the outer tub fitting, and the connector (S1 ) To at least one of (S2) and (S3), an induction port G that is connected to the inner tub 12 and through which external gas can be injected into the outer tub through the injection path;
The induction tool (G),
It is coupled to the connector, a center guide hole is formed in the inner center so as to be connected to the inner tank, a coupling cap 624 for opening and closing the center guide hole 622 is provided at the upper end, and an extension part ( A main body 620 having 626 formed thereon,
A locking hole 640 for fixing the expansion part 626 to the main body 620,
A connection hole 628 formed in the expansion part 626 and communicated with the injection path 500,
Submarine fuel cell oxygen supply device, characterized in that it is coupled to the connection hole 628 and comprises an outer tank gas inlet 660 in which a guide path 662 communicating with the injection path 500 is formed at an inner center Induction port for hull valve set of
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