JPH061107B2 - Water seal device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water sealing device, and more particularly to a water sealing device suitable for a vehicle having an airtight vehicle body and traveling at high speed.

[Conventional technology]

In a railway vehicle traveling at high speed, the vehicle exterior pressure fluctuates when traveling in a tunnel, which causes passengers to feel uncomfortable. Therefore, the vehicle body has an airtight structure to prevent the vehicle exterior pressure variation from being transmitted. By the way, in railway cars,
Although the drainage from the washroom in the vehicle is discharged to the outside of the vehicle, it is necessary to discharge the drainage to the outside of the vehicle while keeping it airtight in the vehicle body having the airtight structure as described above. For this purpose, a water seal device is installed.

The water sealing device will be described with reference to FIGS. 8 to 11. In the figure, the water drained by the hand-washing device 11 or the like installed in the washroom in the airtight chamber 10 enters the water sealing device 1 provided under the floor, circulates inside, and then is discharged outside the vehicle by the drain pipe 8. Is discharged. The internal condition of the water sealing device 1 will be described in detail. First, as shown in FIG. 9, when water first enters the water sealing device, since the air layer 12 remains in the siphon tube,
You cannot exert the siphon effect. When the vehicle travels in this state and the pressure outside the vehicle decreases, the air in the siphon tube is pushed out in the form of bubbles 13 by the movement of the water shown by the arrow in FIG. On the contrary, when the vehicle exterior pressure increases, the 11th
The water moves as shown by the arrow in the figure, and the air in the siphon tube is pushed out in the form of bubbles 13.

In this way, the air layer 12 inside the siphon tube was eliminated, and the water was drained while maintaining airtightness due to the effect of the siphon of the siphon tube.

An example of the water sealing device is, for example, Japanese Patent Publication No.
11453 publication is mentioned.

[Problems to be Solved by the Invention]

In the above water seal device, the air inside the siphon tube must be discharged at an early stage so that a predetermined ability can be exhibited. However, since the siphon pipe of the water sealing device is arranged in the vertical direction as a whole, the flow of water also goes vertically downward. Along with this, the bubbles move below the open end of the siphon tube. Then, the bubbles rise with the flow of water weakened. At this time, the bubbles located immediately below the open end of the siphon tube will return to the inside of the siphon tube again.

That is, in the conventional water sealing device, sufficient consideration has not been given to the point that the air in the siphon pipe is quickly drained.

An object of the present invention is to provide a water sealing device capable of promptly discharging the air in the siphon tube.

[Means for Solving the Problems]

In order to achieve the above object, the siphon pipe communicating with the water storage chamber is configured to generate a flow having a horizontal component in the fluid exiting the water storage chamber opening.

[Action]

Since the air in the siphon tube is discharged from the siphon tube by the water flowing in the siphon tube, the air which has a horizontal component is generated in the fluid exiting the water storage chamber opening of the siphon tube. The water having a horizontal component is discharged in a direction away from the siphon tube. Therefore, even if the air discharged from the siphon tube rises as bubbles, it does not return to the inside of the siphon tube, and the air in the siphon tube can be quickly discharged.

〔Example〕

An embodiment according to the present invention will be described below with reference to FIGS. 1 to 7.

First, a first embodiment of the present invention will be described with reference to FIGS. In the figure, reference numeral 1 is a main body of the water sealing device, the inside of which is divided into two by a partition plate 4 to form a water storage chamber 2 and a water storage chamber 3. The partition plate 4 includes the water storage chamber 2
Also, a hole 5 that connects the water storage chamber 3 is provided. A siphon tube 6 forming a siphon means is provided on each water reservoir side of the hole 5.
a and 6b are provided. That is, siphon tube 6
The a, the hole 5 and the siphon pipe 6b constitute a siphon means, and the water storage chamber 2 and the water storage chamber 3 are communicated with each other. The siphon pipes 6a and 6b are formed by joining another flat plate to a flat plate whose end portion is curved, and have a size capable of obtaining a water head necessary for maintaining airtightness inside the vehicle. Reference numeral 7 is an inflow pipe communicating with the inflow side water storage chamber 2, and 8 is a drain pipe installed by being inserted into the discharge side water storage chamber 3 from below. The drainage pipe 8 is inserted and arranged up to a position reaching the upper part of the main body 1 in order to obtain a water head necessary for keeping airtightness in the vehicle. Reference numeral 9 is a guide plate installed at the open ends of the water storage chambers 2 and 3 of the siphon pipes 6a and 6b. The guide plate 9 is configured so that the flow of water flowing from the siphon pipe 6a and the siphon pipe 6b to the water storage chamber 2 and the water storage chamber 3 has a horizontal component. That is, one end of the guide plate 9 is attached to the partition plate 5, and the entire guide plate 9 is curved in an arc shape.

In such a structure, the water discharged from the inside of the airtight vehicle such as the handwasher flows into the water storage chamber 2 through the inflow pipe 7 and is stored in the water storage chamber 2. Then, as the water level in the water storage chamber 2 rises, it flows into the water storage chamber 3 through the siphon pipe 6a, the hole 5, and the siphon pipe 6b and is stored therein. Furthermore, the water storage room 3
If the water level inside rises and exceeds the upper end of the drain pipe 8, the drain pipe 8
Better drained. At this time, if the flow velocity in the siphon pipes 6a, 6b is high, the air in the siphon pipes 6a, 6b flows out together with water and is discharged.
It is impossible to flow a large amount of water from the inside, and air remains in the siphon pipes 6a and 6b at the initial use of the water sealing device.

When the pressure variation outside the vehicle acts on the water sealing device in such a state, a difference occurs between the pressures acting on the water surfaces of the water storage chamber 2 and the water storage chamber 3, and the pressure difference rapidly changes. Therefore, the water in the water sealing device body 1 rapidly flows from the water storage chamber 2 to the water storage chamber 3 or from the water storage chamber 3 to the water storage chamber 2. Due to this flow of water, the air in the siphon pipes 6a and 6b is stored in the water storage chamber 2
Alternatively, it is washed away into the water storage chamber 3. Then, water and air, that is, air bubbles, flowing from the siphon pipe 6 a into the water storage chamber 2 become a horizontal flow by the guide plate 9 and flow into the water storage chamber 2. On the other hand, water and air bubbles flowing from the siphon pipe 6a into the water storage chamber 2 similarly flow in the horizontal direction and flow into the water storage chamber 3. As a result, the bubbles rise at a position displaced from the open ends of the siphon tubes 6a and 6b, and do not return to the inside of the siphon tubes again as in the conventional case. Therefore, the air in the siphon pipes 6a and 6b can be quickly drained, and the siphon effect can be exhibited early.

With such a configuration, the air remaining in the siphon tubes 6a and 6b can be quickly drained, and a predetermined airtightness maintaining function can be exerted at an early stage. Further, the above-mentioned effect can be achieved by a very simple structure in which the guide plate 9 is provided at the open end portions of the siphon tubes 6a and 6b.

Next, a second embodiment of the present invention will be described with reference to FIGS. In the figure, the same reference numerals as those used in the first embodiment denote the same members. In this example,
The difference from the first embodiment is the structure of the siphon tube 15. That is, the siphon pipe 15 is used as a pipe material to connect one or a plurality of water storage chambers with each other, and the tip 15a of the opening is curved in the horizontal direction.

In such a structure, the air remaining in the siphon tube 15 is discharged by the same operation as in the first embodiment.

With such a configuration, since the siphon pipe 15 is a pipe material, the number of parts can be reduced. Further, since the predetermined function can be exhibited only by bending the tip end 15a of the siphon tube 15, the working operation thereof can be facilitated. Therefore, it is particularly effective when mass-producing the water sealing device.

In addition, if the siphon tube 15 has a structure in which the siphon tube 15 is directed upward as shown by a two-dot chain line in the figure, it is more effective in draining bubbles.

Next, a third embodiment of the present invention will be described with reference to FIGS. In the figure, the same reference numerals as those used in the first embodiment denote the same members. In this example,
The difference from the first embodiment is the structure of the siphon tube 16. The siphon tube 16 had a peripheral plate 16b whose one end was bent at a right angle and whose other end was curved in an arc shape, and a hole 16c which was joined to the side surface of the peripheral plate 16b and corresponded to the siphon tube opening at the bottom. It is composed of a side plate 16a.

In such a structure, the air remaining in the siphon tube 16 is discharged through the hole 16c by the same operation as in the first embodiment.
Emitted from.

According to such a configuration, the peripheral plate 16b is bent and formed,
Since the side plate 16a is joined to this and joined to the partition plate, the structure is simpler than the first embodiment and the manufacture is easy.

〔The invention's effect〕

According to the present invention, the air in the siphon tube or the air can be quickly discharged.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of a water sealing device according to the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG.
FIG. 4 is a sectional view taken along the line BB in FIG. 4, FIG. 4 is a sectional view showing a second embodiment of the water sealing device according to the present invention, FIG. 5 is a sectional view taken along the line CC in FIG. 4, and FIG. Sectional drawing which shows the 3rd Example of the water sealing device by invention, FIG. 7: Sectional drawing of the DD section of FIG. 6, 8th.
The figure is a side view showing the installation status of a water sealing device in a vehicle, and FIGS. 9, 10, and 11 are side views showing the operating conditions of a conventional water sealing device. 2, 3 ... water storage chamber, 4 ... partition plate, 5 ... hole, 6a, 6
b ... Siphon tube, 7 ... inflow tube, 8 ... exhaust tube

Claims (4)

[Claims] 1. A water seal device in which an inflow pipe is installed in one of the two water storage chambers and an exhaust pipe in the other is installed, and the two water storage chambers are communicated by a siphon means. A water-sealing device, which is configured to generate a flow having a horizontal component in a fluid that exits an opening. 2. The water sealing device according to claim 1, wherein the siphon means is a siphon tube communicating with the water storage chamber, and guide means for changing the direction of fluid flow is provided at the open end of the siphon tube. Water sealing device. 3. The water sealing device according to claim 2, wherein the guide means is a guide plate arranged so as to face the opening end of the siphon tube. 4. The water sealing device according to claim 2, wherein the guide means is formed by bending an opening end of the siphon tube.