JPH09264116A - Oil pressure alarm device for marine engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To immediately stop a marine engine causing an abnormality, and surely prevent the breakage by arranging a hydraulic switch which is operated when the hydraulic pressure falls to give an alarm or urgently stop an engine on the terminal part of a hydraulic piping extending from the engine to an oil pressure gauge or on the vicinity thereof. SOLUTION: Oil pipes 8a, 8b are arranged extending from the hydraulic circuit of a marine engine 1 to a first adapter 7 having an oil pressure gauge 4 and a hydraulic switch 5, which is set on the hull side, and a third oil pipe 8c branched from the oil pipe 8a is extended to a second adapter 6 having a hydraulic sensor 3 and another hydraulic switch 5. The sensor 3 is wired to an oil pressure gauge 2 arranged in, for example, a pilot house. The switch 5 is wired to an alarm device for alarming a drop of oil pressure and/or an emergency stop device for stopping the engine, whereby the occurrence of an abnormality is alarmed, when the oil pressure falls by the abnormality on the engine 1 side, and the engine 1 is also urgently stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic pressure alarm device for a marine engine.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 2, a hydraulic pressure gauge and a hydraulic pressure alarm device for a marine engine have, for example, a Bourdon tube type hydraulic pressure gauge 4 near the engine 1 such as an engine room. And the second oil pipes 8a, 8
b, and the oil pipe 8a.
From the hydraulic pressure sensor 3 piped by the third oil pipe 8c branched from, a wiring W is wired to, for example, the electric hydraulic pressure gauge 2 provided in the steering room. The engine 1 is provided with a hydraulic switch 5. The hydraulic switch 5 has a function of detecting a decrease in hydraulic pressure due to a failure or an oil leak, and issuing an alarm or stopping the engine.

To measure the oil pressure of the marine engine 1,
A high-precision oil pressure sensor or oil pressure gauge is used, it is installed on the hull side while avoiding vibration of the engine 1, and rubber pipes are not often used for the oil pipes 8a to 8c for fire prevention. , Most are piped with metal pipes. Even if the end oil pipes 8a to 8c are broken or leaked, the engine oil pressure generally does not decrease until a large amount of oil flows out, and the oil pressure switch 5 directly attached to the engine 1 is used. By the time it was detected by, there was a fear that the engine would have broken down.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a hydraulic pressure alarm device for a marine engine which can detect damage or oil leakage at the end of the oil pipe.

[0005]

The hydraulic pressure alarm system for a marine engine of the present invention is a hydraulic pressure alarm system for a marine engine, when the hydraulic pressure decreases at or near the end of the hydraulic pipe from the engine to the oil pressure gauge. A hydraulic switch is provided that activates to give an alarm or to stop the engine in an emergency.

According to the oil pressure alarm device for a marine engine of the present invention having the above-mentioned structure, the position near the position where the oil pipe is liable to be damaged or leaked, or the downstream side of the oil pressure source from the position. Since the hydraulic switch is provided, when a problem such as damage or leakage occurs in the hydraulic piping system, the hydraulic pressure drops at the location where the hydraulic switch on the downstream side of the defective piping system is installed. Therefore,
The hydraulic switch can reliably detect malfunctions such as breakage and leakage.

Since the hydraulic switch can reliably detect a failure such as breakage or leakage, it becomes possible to stop the engine early when such a failure occurs, thereby preventing the engine from being damaged. It can be done more reliably.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, oil pipes 8a and 8b are piped from a hydraulic circuit of a marine engine 1 to a first adapter 7 installed on the hull side, and the adapter 7 includes:
For example, a Bourdon tube type hydraulic pressure gauge 4 and a hydraulic pressure switch 5 are attached, and an oil passage communicates with the oil pipe 8b. On the other hand, the third branched from the oil pipe 8a
The oil pipe 8c is connected to the second adapter 6, and the oil pressure sensor 3 and another hydraulic switch 5 are attached to the adapter 6 so that the oil passage communicates with the oil pipe 8c. Then, from the hydraulic pressure sensor 3, a wiring W is wired to, for example, an electric hydraulic pressure gauge 2 arranged in a steering room.

The hydraulic switches 5 and 5 are wired to an alarm device (not shown) that issues an alarm when the oil pressure drops and / or an emergency stop device (not shown) that stops the engine.

Therefore, according to the above configuration, the position where the pressure switch 5 is provided is the end portion of the pipeline that is most affected by a decrease in hydraulic pressure due to an abnormality on the engine 1 side, Also, the oil pipe 8a-
In the event of damage or oil leakage in c, the pressure switch 5 is located in the vicinity or downstream of the hydraulic power source, so that an abnormality is reliably detected and an alarm or emergency stop is performed. .

[0011]

As described above, according to the present invention, the pressure switch is provided at the end portion of the pipeline or in the vicinity thereof, and when a hydraulic pressure drop occurs due to an abnormality on the engine side, or due to vibration or the like. Even if the oil pipe is broken or leaks, it can be detected quickly and reliably.

Then, by issuing an alarm or stopping the engine in an emergency, the marine engine in which an abnormality or a defect has occurred is immediately stopped. As a result, engine damage prevention can be achieved more reliably.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory view showing a conventional hydraulic pressure alarm device for a marine engine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Engine 2 ... Oil pressure gauge 3 ... Oil pressure sensor 4 ... Oil pressure gauge 5 ... Oil pressure switch 6 ... Second adapter 7 ... First adapter 8a, 8b, 8c・ ・ ・ Oil pipe W ・ ・ ・ Wiring

Claims (1)

[Claims] 1. A hydraulic pressure alarm device for a marine engine, which activates and issues an alarm when the hydraulic pressure drops at or near the end of a hydraulic pipe extending from the engine to a hydraulic gauge,
Alternatively, a hydraulic pressure alarm device for a marine engine is provided with a hydraulic switch for stopping the engine in an emergency.