| 摘要 |
<p>The present invention relates to a method, and to the relevant apparatus (20), for the remote detection of leakages (L) in a hydraulic circuit, specifically of an automation line, (C) that uses a pressurized hydraulic fluid (F), said method providing to intercept a portion (10) of said hydraulic circuit (C) to be subjected to the detection operations by means of a first (1) and a second (2) pressure plug, to connect said portion of hydraulic circuit (10) to an apparatus (20) suitable for the remote detection of said leakages (L), to start said apparatus (20), to remove possible air (A) present in said portion of hydraulic circuit (10) by feeding into it said hydraulic fluid (F), to increase the pressure in said portion of hydraulic circuit (10) up to the operating reference value typical of said hydraulic circuit (C) to be checked, to monitor that the pressure level is stabilized at said typical operating reference value for a predetermined period of time, to measure the pressure values (PI, P2) in correspondence of said first (1) and said second (2) pressure plug and to determine the pressure gradient (ΔΡ), and to generate an alarm signal in the event that said pressure gradient (ΔΡ) is higher than a predetermined value, preferably is higher than zero, this denoting the presence of a leakage (L); the method, and the relevant apparatus, according to the present invention may also provide to automatically replenish the detected leakages (L). The present invention is preferably, but not exclusively, aimed at identifying both the internal leakages and the external leakages of the users (40) that are part of the aforesaid hydraulic circuits (C), even if such leakages consist in very small quantities.</p> |
