JPS5869398A - Launcher for underwater sailing body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic launch device for an underwater vehicle provided in a defense device installed under the water surface inside a ship.

In recent years, submersible vehicle launchers from underwater are of the hydraulic launch method, in which the underwater vehicle is loaded into the launch tube, but before and after the vehicle is launched from the launch tube. In this case, a water cylinder (hydraulic cylinder) is used to create the water pressure necessary to push out the underwater vehicle against the seawater pressure outside the ship and the pressure inside the launch tube (usually a combination of this water cylinder and the launch tube body). The pressure inside the water passage (collection tank) between the vessels is equalized, and the force (water pressure) required to push out the underwater vehicle is unaffected by changes in seawater pressure (depth) outside the vessel. ) and a compressed air cylinder and a piston connected to a water cylinder piston rod as means for reciprocating the water bisuit in the water cylinder.

However, when the water cylinder piston reciprocates by introducing or discharging compressed air from both ends of this compressed air cylinder, the compressed air is discharged into the ship, but this discharged compressed air causes the hull to vibrate. There was a drawback that the vibration sound propagated through the seawater and transmitted the launching operation of the underwater vehicle to the outside.

In order to eliminate the above-mentioned conventional drawbacks, the present invention aims to realize a quiet launching device for an underwater vehicle without vibration noise. By using high-pressure liquids (water, oil, etc.) in combination, the aim is to eliminate the discharge of high-pressure air into the ship and to minimize noise when launching an underwater vehicle. That is, when launching an underwater vehicle, the underwater vehicle launcher according to the present invention operates a water cylinder piston using high-pressure air accumulated in a high-pressure air tank. In the present invention, the air in the compressed air cylinder is returned to the high-pressure air tank using the high-pressure liquid stored in advance in the high-pressure liquid tank instead of discharging it into the ship. , eliminates the sound of high-pressure air being discharged into the ship, and returns the water piston to its initial next firing position. Furthermore, after the water piston is returned to its initial position, the high pressure liquid introduced into the compressed air cylinder is discharged into the water tank in a short time by some high pressure air in the piping.

Hereinafter, the present invention will be explained in detail with reference to an embodiment shown in the drawings.

In FIG. 1, the front part of the hull A is equipped with a launch tube 1 for an underwater vehicle. is connected to the air cylinder 22 via the hydraulic pipe 14, and connects the air cylinder 22 to the firing valve 2.
6 to the high-pressure air tank 25 and a water supply valve 38 to the high-pressure liquid tank 27, and further connected to the drain tank 11 via the air cylinder 22 and the drain valve 9, while the high-pressure liquid tank 27 is connected to the drainage tank 11 via the hydraulic pump 41, and the high pressure liquid tank 2
7 through the stop valve 30 to show the action of each of the above-mentioned components. The operating cycles up to the return of the piston to the pre-launch position will be described below.

a) Launch preparation state FIG. 1 shows the launch tube 1 in the launch preparation state. In the figure, the underwater vehicle T is loaded into the launch tube 1.

During this time, the piston 24 in the firing tube 22 is located in the front position of the air cylinder 22 shown in FIG. 1, and is stopped at the front position by the locking device 16. It is locked against the force due to seawater pressure acting on the cross-sectional area of 23.

Compressed air at a specified pressure is stored in the high-pressure air tank 25 through compressed air supply pipes 24, 29 and a valve 30, and is connected through a pipe 28 to the firing valve 2'6. The artist's liquid tank 27 stores a pressurized liquid that has been pressurized by high-pressure air at a specified pressure above the tank, and is connected to the valve 38 through a pipe 39.

The rear end of the air cylinder 22 is connected to a pipe 32 through a three-way valve 33.
34, and is also connected to the air cylinder 22 through a three-way valve 9 as shown in FIG.

The drain tank 11 is reached through pipes 8 and 10.

In FIG. 1, valve 5 is open, valves 19, 26.3038 are closed, and three-way valve 33 is connected to muffler 36 through pipe 34.35.

b) Firing Figures 2 and 3 show the firing situation. When the firing valve 26 is opened, the high pressure air in the high pressure air tank 25 flows into the pipe 28.
．． 31 into the air cylinder 22, and at the same time the piston locking device 16 is released to push the piston 24 rearward. At this time, the piston rod 23 and the water piston 21 are pulled rearward, so the water in the water cylinder is pushed through the inlet 15 into the passage 17 of the passage collection tank, and then is ejected through the lower guide of the launch tube 1. It enters the tube 1, pushes the underwater vehicle T forward, and injects it from the launch tube 1. During the forward stroke (launch stroke) of the water piston 21, the water cylinder 1
The water that passes through the front end opening of 4 and falls behind the water piston 21 from the sea follows behind the water piston 21. As shown in FIG. 3, this water passes through the inlet 15 of the water cylinder 14 located behind the water piston 21, passes through the passage 17 and the inlet 7, and enters the launch tube 1 just before the water piston 21 finishes its forward stroke and stops. The movement also acts to dissipate nergy.

C) Piston return to pre-fire position Figures 4 and 5 show the state in which the piston is returned to its pre-fire position after firing. In the figure, the three-way valves 9 and 33 are closed and the pressurized liquid supply valve is closed. When 38 is opened, the high pressure liquid in the pressure liquid tank 27 enters the air cylinder 22 through the piping 39° 37 valve 38 and pushes the piston 24 to advance the rod 23. At this time, the rod 23 side of the cylinder 22 contains high-pressure air that moves the piston 24 forward, and together with the seawater pressure of the water cylinder 14 acting on the cross-sectional area of the rod 23, the piston 24 is moved in the forward direction (left side in the figure). ), but the high-pressure liquid overcomes these forces and pushes the piston 24 back in the return direction (rod 23 side, right side in the figure), and the high-pressure air inside the cylinder 22 is transferred to the piping 28.
．． 31 and is compressed and pushed back into the high pressure air tank 25 via the firing valve 26.

The water cylinder 14 directly connected to the rod 23 by this pushing back
Since the water piston 21 also returns to its original position, seawater is drawn in through the lower front end opening of the launch tube 1 and the water cylinder inlet 15 to fill the water cylinder 14 again.

When the piston 24 returns in this manner, the piston locking device 16 operates to fix the piston 24. At the same time, the firing valve 26 is closed and the circuit from the high pressure air tank 25 and pipe 28 to the cylinder 22 is closed. Next, after closing the valve 38 to cut off the high-pressure water circuit, the three-way valve 9 is switched so that the high-pressure liquid in the cylinder can be discharged into the water tank 11 through the pipes 8 and 10. Thereafter, the three-way valve 33 is switched to equalize the pressure in the pipes 32 and 34. By this operation, the high pressure air remaining in the piping 31, 32, 34 shortens the time for draining the liquid used to return the piston 24, and in order to avoid discharging the remaining high pressure air directly into the ship as in the past, the remaining high pressure air High pressure air is expanded into the cylinder 22 to become low pressure air and then discharged into the ship,
Air exhaust noise can be reduced. This results in the piston returning to its pre-firing position and completing one operating cycle.

As described in detail in the above embodiments, the underwater vehicle launcher according to the present invention can launch an underwater vehicle, such as an underwater vehicle, a flying vehicle, by rapidly increasing the pressure inside the launch tube connected to the water cylinder. As a device for launching mines, etc., the water piston of the water cylinder is connected to the reciprocating piston of the driving cylinder through a rod, and a high-pressure air tank for supplying high-pressure air for forward movement is connected to the driving cylinder. At the same time, a high-pressure liquid tank that supplies high-pressure liquid for double-acting is connected, and when the high-pressure liquid for double-acting is sent from the high-pressure liquid tank to the above-mentioned driving cylinder, the air remaining in the driving cylinder is sent to the high-pressure air tank. In the return tube, high-pressure air and high-pressure liquid are used together in the water piston in the water cylinder that generates a rapid pressure increase, that is, the pressure to push out the underwater vehicle, and in the air cylinder for driving the piston.
By eliminating the direct discharge of pressurized air into the ship and reducing the discharge noise, it is possible to reduce as much as possible the noise during launch of the underwater vehicle launch system.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the general configuration of an underwater vehicle launching device according to the present invention, and FIGS. 2 to 5 are explanatory diagrams of the operation of the main parts of FIG. 1. 1... Launch tube, 14... Hydraulic cylinder, 22... ° Launch tube, 21.24... Piston, 26... Launch valve, 2
5...High pressure air tank, 27...High pressure liquid tank. Patent applicant: Agent of Kobe Steel, Ltd.
Patent attorney Seihaku Ao and two others Procedural amendment December 23, 1980 Commissioner of the Japan Patent Office 1 Indication of the case 1982 Patent Application No. 169749 2 Name of the invention Underwater vehicle launcher 3 Person making the amendment Relationship to the case Patent applicant representative Takayoshi Takahashi 4, agent 5, date of amendment order (voluntary amendment) 7. Contents of amendment (I) The following parts in Particulars 6 are corrected. In the Detailed Description of the Invention column (1), page 5, line 3, ``launch cylinder 22'' is corrected to ``air cylinder 22.'' (2) On page 5, line 9, "compressed air supply pipe 24" should be corrected to "compressed air supply pipe 4". (3) On page 7, line 9, correct the text ``Move forward.'' to ``Move backward [to the right in diagram C].'' (4) On page 8, line 12, "Piping 31, 32, 34J" has been corrected to "Piping 31, 32J." (I[) In the drawings, Figure 2, Figure 3 at t4, Figure 4 , Figure 5 is corrected as shown in the attached sheet.

Claims (1)

[Claims] (1) A device that launches an underwater vehicle by a rapid increase in pressure inside a launch tube connected to a water cylinder, and connects the water piston of the water cylinder to the reciprocating piston of the drive cylinder via a rond. A high-pressure air tank for supplying high-pressure air for forward motion is connected to the driving cylinder, and a high-pressure liquid tank for supplying high-pressure liquid for backward motion is connected to the driving cylinder, and high-pressure liquid for backward motion is supplied from the high-pressure liquid tank to the above-mentioned drive cylinder. An underwater vehicle launching device characterized in that air remaining in the driving cylinder when being sent to the cylinder is sent back to the high pressure air tank.