JPS6316638Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the improvement of a water supply system, such as a deep-sea diving device, that has two high-pressure chambers.It eliminates valve misoperation and improves the safety and reliability of workers living in the high-pressure chamber. The present invention relates to a water supply device for a two-chamber high-pressure chamber with improved performance.

DDC (deck decompression chamber), a diving device used for various diving operations including deep-sea diving, while workers live in a hyperbaric chamber; deep-sea diving training equipment;
Water supply to hyperbaric chambers such as diving medical hyperbaric physiology experimental treatment equipment is important for extinguishing fires in the hyperbaric chamber, providing sanitary water, ensuring the safety of divers, and maintaining a good living environment. Moreover, this water supply must always be pressurized to an appropriate higher pressure than the indoor pressure, and it is necessary to maintain the water supply at an appropriate pressure at all times.

The outline of a hyperbaric chamber will be explained below using a deep sea diving device as an example.

Hyperbaric chambers such as deep-sea diving equipment are generally more than 2 meters in diameter and several meters long, and are devices that accommodate several divers and work while living there for several hours to several tens of days. be.

On the other hand, if a diver suddenly exits the hyperbaric chamber to atmospheric pressure, such as when a diver finishes work or takes a change, or when he or she becomes ill and goes outside,
As is well known, this can lead to death or severe diving disease, so the pressure must be gradually reduced over several to tens of days to allow the diver to escape into the atmosphere.

In this manner, in a deep sea diving device having a plurality of high pressure chambers, the pressure in each high pressure chamber is not constant, and the pressure in each high pressure chamber is adjusted depending on the purpose.

Furthermore, since the breathing environmental gas in the high-pressure chamber has a higher partial pressure of oxygen than the atmosphere, combustion starts quickly and the combustion rate is fast. If a fire were to occur in a high-pressure chamber, gas contamination would rapidly develop due to the narrow interior, resulting in death by suffocation. Therefore, it is necessary to extinguish the fire immediately, and for this purpose it is necessary that a water supply at an appropriate pressure is constantly led to the hyperbaric chamber. The same applies to daily and sanitary water supplies to maintain the physical and mental health of divers.

On the other hand, the DDC (deck decompression chamber) of the diving equipment
etc., are equipped with many piping and valves.

The main components are helium-oxygen, helium, and high-pressure air systems that increase or decrease the pressure in the high-pressure chamber depending on the purpose, so-called pressurization and depressurization piping, and numerous operation valves for environmental control. Equipment such as carbon dioxide absorbers, deodorizers, sterilizers, carbon monoxide converters, gas coolers, gas heaters, associated cold water system, steam system piping, and numerous operation valves, as well as emergency breathing equipment. For this purpose, there are various gas system piping and a large number of operation valves similar to those for pressurization, water supply system, sewage system, drain system piping and a large number of operation valves for water supply and drainage, and various piping such as hydraulic system. and an operating valve are attached.

In addition, since the above piping system is piped into the high pressure chamber from the outside, a pressure-resistant shell penetration stop valve is installed in the shell penetration part of the high pressure chamber. ) is attached to the enclosure.
Each of these pipes is marked with a sign indicating its type, and every possible consideration is given to the location and name plate of each valve to prevent erroneous operation.

The operation of the various equipment in the DDC (deck decompression room) mentioned above directly affects the lives of the workers living inside, and even the slightest erroneous operation due to mistake cannot be tolerated.

In this way, deep-sea diving equipment has multiple high-pressure chambers, and the pressure in these high-pressure chambers can be changed depending on the purpose of use.Also, the oxygen partial pressure inside the high-pressure chamber is high, and there is a possibility of a fire occurring in the atmosphere. Workers living inside the high-pressure room are always at risk of death by suffocation, and there are many operating valves, so if a worker outside the high-pressure room accidentally operates one of these valves, ,
In terms of safety, it directly affects the lives of the workers living in the hyperbaric chamber, and the lives of the workers living in the hyperbaric chamber are in a work environment that is left to outside workers. Sufficient consideration is required.

Water is supplied to the high-pressure chamber of this deep-sea diving device by adjusting the pressure in the water tank and the pressure difference in the high-pressure chamber.
We try to supply water at optimal pressure. An example thereof is shown in FIG. 1 and will be explained.

In the figure, A and B are high pressure chambers, the internal pressure of which can be changed depending on the usage situation. 1 is a water supply tank, which detects the higher pressure of high pressure chamber A or B, operates a pressure control valve 8 via a pilot system shown by a dotted line, and reduces the gas pressure from pressure reduction piping 9. Then, the pressure inside the water tank 1 is adjusted.

The pressure in this water supply tank 1 is, for example, 3 kg/cm ² g higher than the pressure in the higher pressure chamber A or B, and the pressure in the higher pressure chamber is always 3 kg/cm 2 g.
The water supply is designed to have a pressure of cm ² g.

Reference numerals 3 to 7 indicate operation valves, and reference numeral 2 indicates a pressure reducing valve. By operating the valves 3 to 7, water from the water supply tank 1 is supplied to the high pressure chambers A and B, respectively.

For example, the following description will be made assuming that the pressure in high pressure chamber A is 30 kg/cm ² g and the pressure in chamber B is 10 kg/cm ² g. In this case, the pressure inside the water tank 1 is adjusted to 33 kg/cm ² g.

The operations of valves 3 to 7 under the above pressure conditions supply water by opening valve 3, opening valve 4, closing valve 5, closing valve 6, and opening valve 7.

That is, the water in the water tank 1 (33Kg/cm ² g) is
High pressure chamber A (30Kg/cm ² g) is supplied with water via pressure reducing valve 3, and high pressure chamber B (10Kg/cm ² g) is depressurized by pressure reducing valve 2 to 13Kg/cm Supply ² g of pressurized water.

Also, depending on the work situation, the pressure in the high pressure chamber changes. For example, if the pressure in room A is reduced and the pressure in room B is increased, and the relationship between room A and room B is reversed, the valve that was previously open may Operate valves 3, 4, and 7 to close them, and open valves 5 and 6, which were previously closed.

If a mistake is made in this valve operation, high-pressure water from the water supply tank 1 will be supplied to the low-pressure side chamber.

For example, if such an erroneous operation occurs when a fire occurs, the excessive jet pressure when extinguishing the fire with jet water may endanger divers. Also, even in normal residential life, unexpected high-pressure water may gush out, which may lead to death or injury.

In addition, low-pressure water is supplied to the high-pressure room side, making it impossible to extinguish a fire and leading to death by suffocation. In addition, the water has no use as water for daily sanitation and causes discomfort.

The present invention was developed in view of the above-mentioned circumstances of deep-sea diving equipment, etc., and aims to provide a water supply system for a two-chamber high-pressure chamber that eliminates erroneous valve operation and improves the safety and reliability of working personnel. It is something to do.

In other words, the present invention allows switching the pressure in the water tank and the water supply system to be performed in one operation in order to eliminate erroneous valve operations.
A water supply tank is equipped with a pressure regulating valve to adjust its internal pressure, and a direct water supply system that supplies water directly from this water supply tank to one high pressure chamber, and a reduced pressure water supply system that supplies water to the other high pressure chamber via a pressure reducing valve. A switching valve is provided for switching between the direct water supply system and the reduced pressure water supply system, and a pilot switching valve is provided for inputting a pressure signal to the pressure regulating valve provided in the water supply tank and the pressure reducing valve provided in the reduced pressure water supply system. By interlocking this water supply system switching valve and the pilot switching valve,
The high-pressure chamber on the high-pressure side of the two high-pressure chambers is supplied with water directly from a water supply tank through a direct water supply system, and the high-pressure chamber on the low-pressure side is supplied with water through a reduced-pressure water supply system.

An embodiment of the present invention will be described in detail below.

FIG. 2 shows an embodiment of the invention. In the figure, 1 is a water supply tank, which reduces the gas pressure from the pressure reduction system 9 using a pressure regulating valve 8, and adjusts the internal pressure of high pressure chamber A or B, which is in a higher pressure state, by using a pressure regulating valve 8. The pressure is regulated accordingly. 13 is a direct water supply system directly connected to the water supply tank 1, 14 is a pressure reducing valve 1
0, and these water supply systems are
It is connected to high pressure chambers A and B via a water supply system switching valve 11. 15 is a pilot system for the pressure regulating valve 8 attached to the water supply tank 1; 16 is a pilot system for the pressure reducing valve 10 provided in the reduced pressure water supply system 14; these pilot systems are connected via the pilot system switching valve 12. , connected to hyperbaric chambers A and B.

The pilot system switching valve 12 and the water supply system switching valve 11 are interlocked so that the water supply system and the pilot system have the following relationship.

That is, corresponding to the water supply system switched by switching the water supply system switching valve 11, the pilot system of the high pressure chamber A or B to which the water supply system 13 is directly connected is set to the pressure regulating valve 8.
The pilot system of the high pressure chamber A or B to which the reduced pressure water supply system 14 is connected must be connected to the pressure reducing valve 1.
The pilot system switching valve 12 and the water supply system switching valve 11 are linked so that the water supply system and the pilot system are switched at the same time.

The operation of this embodiment configured as above will be explained next.

In the state shown in FIG. 2, chamber A is the high pressure side (e.g. 30 kg/
In this case, chamber A is on the high pressure side (e.g. 10 kg/cm2 g), and chamber B is on the low pressure side (e.g. 10 kg/ ^cm2 g). Through the water supply system switching valve ¹¹ , the direct water supply system 13 is connected to the high pressure chamber A, and the reduced pressure water supply system 14 is connected to the high pressure chamber B.

On the other hand, for the pilot system, the pilot system switching valve 12
Accordingly, the high pressure chamber A and the pressure regulating valve 8 are connected by a pilot system 15, and the high pressure chamber B and the pressure reducing valve 10 are connected by a pilot system 16.

By linking this water supply system and the pilot system,
The pressure in the water supply tank 1 is regulated to a constant pressure (for example, 30Kg/cm ² g + 3Kg/cm ² ) according to the pressure in the high pressure chamber A, and the water is directly supplied to the high pressure chamber A by the water supply system 13.
Kg/cm ² g of water is supplied. Also, the pressure in the high pressure chamber B is reduced by the pressure reducing valve 10 (for example, 33 kg/cm ² g→13
Kg/cm ² g) water is supplied.

In this pressure relationship, for example, by reducing the pressure in high pressure chamber A and increasing the pressure in high pressure chamber B, the pressure in high pressure chamber A is, for example, 5 kg/cm ² g, and the pressure in high pressure chamber B is, for example, 25 kg/cm 2 g.
Kg/cm ² g, water supply system switching valve 11
If you do not switch, the pressure inside water tank 1 will be 5 kg/
cm ² g+3Kg/cm ² g, making it impossible to supply water to high pressure chamber B.

Therefore, depending on the pressure changes in both high pressure chambers A and B,
It is necessary to switch the water supply system switching valve 11. The switched state is shown in Figure 3.

In the figure, when the water supply system switching valve 11 is switched, the pilot system switching valve 12 is also switched at the same time.

That is, the pressure in the water supply tank 1 is switched via the pilot system 15 so as to be adjusted according to the pressure in the high pressure chamber B, and at the same time, the water supply system to the high pressure chamber B is also switched directly to the water supply system 13. Can be switched.

Further, for the high pressure chamber A, the pressure reducing valve 10 operates according to the pressure within the high pressure chamber A, and water is supplied by the reduced pressure water supply system 14.

In this way, the pressure in the water tank 1 is regulated according to the pressure in the high pressure chamber to which the direct water supply system 13 is connected, and the pressure-regulated water supply is always delivered to the water tank 1 through the direct water supply system 13. Water is supplied to a high-pressure chamber that has a constant pressure difference with respect to the internal pressure of .
Further, water at a constant pressure is supplied to the other high pressure chamber through a reduced pressure water supply system 14 whose pressure is reduced by a pressure reducing valve 10 operated by the pressure within the high pressure chamber.

FIG. 4 shows another embodiment. In the figure, the difference from the embodiment shown in FIG. 2 is that the high pressure chamber A,
The difference is that a differential pressure detection control device 18 is provided which detects the pressure of B and automatically switches the water supply system switching valve 11 and the pilot system switching valve 12.

In the figure, a cylinder 17 is connected to the water supply system switching valve 11.
This cylinder 17 switches between the water supply system switching valve 11 and the pilot system switching valve 12 in one action.

The operation of the cylinder 17 is controlled by the differential pressure switching valve 1.
This is performed by a differential pressure detection control device composed of 8, 19 and a cylinder 20.

That is, the pilot pressure system 2 communicating with the high pressure chamber A
2 is connected to the differential pressure switching valve 18 and the cylinder 20, and the pilot pressure system 21 communicating with the high pressure chamber B is connected to the differential pressure switching valve 19 and the cylinder 20. , the cylinder 20 is operated to switch the differential pressure switching valves 18 and 19, and the cylinder 17 is operated by switching the differential pressure switching valves 18 and 19, and the water supply system switching valve 11 and the pilot system switching valve 1 are operated.
2.

In the state shown in the figure, the pressure in the high pressure chamber A is higher than that in the high pressure chamber B, and the piston of the cylinder 20 moves to the right in the figure to switch the differential pressure switching valves 18 and 19. The piston of the cylinder 17 is moved to the right in the figure, and the pressure difference between the high pressure chambers A and B causes the water supply system switching valve 11 and the pilot system switching valve 12 to
automatically.

As detailed above, according to the water supply system of the present invention, two water supply systems are provided, a direct water supply system and a reduced pressure water supply system, and these two water supply systems are switched by a water supply system switching valve, while the reduced pressure water supply A pilot system switching valve was installed to switch between two pilot systems: a pilot system for the pressure reducing valve installed in the system and a pilot system for the pressure regulating valve installed in the water supply tank, and these two switching valves were made to work together. There is no erroneous operation, and water can be supplied at the optimal pressure according to pressure changes within each high-pressure chamber.

As a result, even if a fire breaks out in the high-pressure chamber, the fire can be extinguished quickly with water at the optimal pressure because there is no erroneous operation of the valve, and there is no danger of suffocation due to gas. Furthermore, since water can be supplied at the optimum pressure for daily sanitation use, there is no danger from high-pressure water, and there are great practical effects such as improved safety and reliability.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing a conventional water supply device.
Figures 2 to 4 show an embodiment of the present invention,
Figure 2 is a system diagram of a water supply system in which the water supply system switching valve and pilot system switching valve are manually switched, and Figure 3 is a system diagram showing the state switched from the state shown in Figure 2 to the opposite state. It is. FIG. 4 is a system diagram of a water supply system in which the water supply system switching valve and the pilot system switching valve are automatically switched based on the pressure difference between the indoor pressures in the high pressure chamber. 1...Water supply tank, 8...Pressure regulating valve, 10...Pressure reducing valve, 11...Water supply system switching valve, 12...Pilot system switching valve, 13...Direct water supply system, 14...Reduced pressure water supply system, 15, 16...Pilot pressure system, A,
B... Hyperbaric chamber.

Claims (1)

[Scope of utility model registration request] A water supply tank equipped with a pressure regulating valve that can selectively regulate the indoor pressure of the two high-pressure chambers, a direct water supply system that supplies water directly from the water tank to one of the high-pressure chambers, and a pressure-reducing valve to the other high-pressure chamber. a water supply system switching valve for switching between the reduced pressure water supply system and the direct water supply system; a pressure regulating valve provided in the water tank for switching the indoor pressure of the high pressure chamber; and a pressure reducing valve provided in the reduced pressure water supply system. The pilot system switching valve and the water supply system switching valve are linked, and the high pressure chamber on the high pressure side of the two high pressure chambers is directly connected from the water supply tank through the water supply system. A water supply switching device characterized by supplying water directly and also supplying water to a high pressure chamber on the low pressure side through a reduced pressure water supply system.